1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #include "jfr/jfrEvents.hpp"
36 #include "jfr/support/jfrThreadId.hpp"
37 #include "utilities/macros.hpp"
38 #include "utilities/ostream.hpp"
39 #if INCLUDE_ALL_GCS
40 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
41 #include "gc_implementation/shenandoah/shenandoahStringDedup.hpp"
42 #endif // INCLUDE_ALL_GCS
43 #include "memory/allocation.hpp"
44 #include "memory/allocation.inline.hpp"
45 #include "memory/gcLocker.inline.hpp"
46 #include "memory/oopFactory.hpp"
47 #include "memory/universe.inline.hpp"
48 #include "oops/instanceKlass.hpp"
49 #include "oops/instanceOop.hpp"
50 #include "oops/markOop.hpp"
51 #include "oops/method.hpp"
52 #include "oops/objArrayKlass.hpp"
53 #include "oops/objArrayOop.hpp"
54 #include "oops/oop.inline.hpp"
55 #include "oops/symbol.hpp"
56 #include "oops/typeArrayKlass.hpp"
57 #include "oops/typeArrayOop.hpp"
58 #include "prims/jni.h"
59 #include "prims/jniCheck.hpp"
60 #include "prims/jniExport.hpp"
61 #include "prims/jniFastGetField.hpp"
62 #include "prims/jvm.h"
63 #include "prims/jvm_misc.hpp"
64 #include "prims/jvmtiExport.hpp"
65 #include "prims/jvmtiThreadState.hpp"
66 #include "runtime/compilationPolicy.hpp"
67 #include "runtime/fieldDescriptor.hpp"
68 #include "runtime/fprofiler.hpp"
69 #include "runtime/handles.inline.hpp"
70 #include "runtime/interfaceSupport.hpp"
71 #include "runtime/java.hpp"
72 #include "runtime/javaCalls.hpp"
73 #include "runtime/jfieldIDWorkaround.hpp"
74 #include "runtime/orderAccess.inline.hpp"
75 #include "runtime/reflection.hpp"
76 #include "runtime/sharedRuntime.hpp"
77 #include "runtime/signature.hpp"
78 #include "runtime/thread.inline.hpp"
79 #include "runtime/vm_operations.hpp"
80 #include "services/memTracker.hpp"
81 #include "services/runtimeService.hpp"
82 #include "utilities/defaultStream.hpp"
83 #include "utilities/dtrace.hpp"
84 #include "utilities/events.hpp"
85 #include "utilities/histogram.hpp"
86 #ifdef TARGET_OS_FAMILY_linux
87 # include "os_linux.inline.hpp"
88 #endif
89 #ifdef TARGET_OS_FAMILY_solaris
90 # include "os_solaris.inline.hpp"
91 #endif
92 #ifdef TARGET_OS_FAMILY_windows
93 # include "os_windows.inline.hpp"
94 #endif
95 #ifdef TARGET_OS_FAMILY_bsd
96 # include "os_bsd.inline.hpp"
97 #endif
98
99 static jint CurrentVersion = JNI_VERSION_1_8;
100
101
102 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
103 // '-return' probe regardless of the return path is taken out of the function.
104 // Methods that have multiple return paths use this to avoid having to
105 // instrument each return path. Methods that use CHECK or THROW must use this
106 // since those macros can cause an immedate uninstrumented return.
107 //
108 // In order to get the return value, a reference to the variable containing
109 // the return value must be passed to the contructor of the object, and
110 // the return value must be set before return (since the mark object has
111 // a reference to it).
112 //
113 // Example:
114 // DT_RETURN_MARK_DECL(SomeFunc, int);
115 // JNI_ENTRY(int, SomeFunc, ...)
116 // int return_value = 0;
117 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
118 // foo(CHECK_0)
119 // return_value = 5;
120 // return return_value;
121 // JNI_END
122 #ifndef USDT2
123 #define DT_RETURN_MARK_DECL(name, type) \
124 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
125 DTRACE_ONLY( \
126 class DTraceReturnProbeMark_##name { \
127 public: \
128 const type& _ret_ref; \
129 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
130 ~DTraceReturnProbeMark_##name() { \
131 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
132 } \
133 } \
134 )
135 // Void functions are simpler since there's no return value
136 #define DT_VOID_RETURN_MARK_DECL(name) \
137 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
138 DTRACE_ONLY( \
139 class DTraceReturnProbeMark_##name { \
140 public: \
141 ~DTraceReturnProbeMark_##name() { \
142 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
143 } \
144 } \
145 )
146
147 #else /* USDT2 */
148
149 #define DT_RETURN_MARK_DECL(name, type, probe) \
150 DTRACE_ONLY( \
151 class DTraceReturnProbeMark_##name { \
152 public: \
153 const type& _ret_ref; \
154 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
155 ~DTraceReturnProbeMark_##name() { \
156 probe; \
157 } \
158 } \
159 )
160 // Void functions are simpler since there's no return value
161 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
162 DTRACE_ONLY( \
163 class DTraceReturnProbeMark_##name { \
164 public: \
165 ~DTraceReturnProbeMark_##name() { \
166 probe; \
167 } \
168 } \
169 )
170 #endif /* USDT2 */
171
172 // Place these macros in the function to mark the return. Non-void
173 // functions need the type and address of the return value.
174 #define DT_RETURN_MARK(name, type, ref) \
175 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
176 #define DT_VOID_RETURN_MARK(name) \
177 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
178
179
180 // Use these to select distinct code for floating-point vs. non-floating point
181 // situations. Used from within common macros where we need slightly
182 // different behavior for Float/Double
183 #define FP_SELECT_Boolean(intcode, fpcode) intcode
184 #define FP_SELECT_Byte(intcode, fpcode) intcode
185 #define FP_SELECT_Char(intcode, fpcode) intcode
186 #define FP_SELECT_Short(intcode, fpcode) intcode
187 #define FP_SELECT_Object(intcode, fpcode) intcode
188 #define FP_SELECT_Int(intcode, fpcode) intcode
189 #define FP_SELECT_Long(intcode, fpcode) intcode
190 #define FP_SELECT_Float(intcode, fpcode) fpcode
191 #define FP_SELECT_Double(intcode, fpcode) fpcode
192 #define FP_SELECT(TypeName, intcode, fpcode) \
193 FP_SELECT_##TypeName(intcode, fpcode)
194
195 #define COMMA ,
196
197 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
198 // (dtrace doesn't do FP yet)
199 #ifndef USDT2
200 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
201 FP_SELECT(TypeName, \
202 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
203 #else /* USDT2 */
204 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
205 FP_SELECT(TypeName, \
206 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
207 #endif /* USDT2 */
208 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
209 FP_SELECT(TypeName, \
210 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
211
212
213 // out-of-line helpers for class jfieldIDWorkaround:
214
215 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
216 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
217 uintptr_t as_uint = (uintptr_t) id;
218 intptr_t offset = raw_instance_offset(id);
219 if (is_checked_jfieldID(id)) {
220 if (!klass_hash_ok(k, id)) {
221 return false;
222 }
223 }
224 return InstanceKlass::cast(k)->contains_field_offset(offset);
225 } else {
226 JNIid* result = (JNIid*) id;
227 #ifdef ASSERT
228 return result != NULL && result->is_static_field_id();
229 #else
230 return result != NULL;
231 #endif
232 }
233 }
234
235
236 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
237 if (offset <= small_offset_mask) {
238 Klass* field_klass = k;
239 Klass* super_klass = field_klass->super();
240 // With compressed oops the most super class with nonstatic fields would
241 // be the owner of fields embedded in the header.
242 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
243 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
244 field_klass = super_klass; // super contains the field also
245 super_klass = field_klass->super();
246 }
247 debug_only(No_Safepoint_Verifier nosafepoint;)
248 uintptr_t klass_hash = field_klass->identity_hash();
249 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
250 } else {
251 #if 0
252 #ifndef PRODUCT
253 {
254 ResourceMark rm;
255 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
256 }
257 #endif
258 #endif
259 return 0;
260 }
261 }
262
263 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
264 uintptr_t as_uint = (uintptr_t) id;
265 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
266 do {
267 debug_only(No_Safepoint_Verifier nosafepoint;)
268 // Could use a non-blocking query for identity_hash here...
269 if ((k->identity_hash() & klass_mask) == klass_hash)
270 return true;
271 k = k->super();
272 } while (k != NULL);
273 return false;
274 }
275
276 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
277 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
278 uintptr_t as_uint = (uintptr_t) id;
279 intptr_t offset = raw_instance_offset(id);
280 if (VerifyJNIFields) {
281 if (is_checked_jfieldID(id)) {
282 guarantee(klass_hash_ok(k, id),
283 "Bug in native code: jfieldID class must match object");
284 } else {
285 #if 0
286 #ifndef PRODUCT
287 if (Verbose) {
288 ResourceMark rm;
289 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
290 }
291 #endif
292 #endif
293 }
294 }
295 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
296 "Bug in native code: jfieldID offset must address interior of object");
297 }
298
299 // Wrapper to trace JNI functions
300
301 #ifdef ASSERT
302 Histogram* JNIHistogram;
303 static volatile jint JNIHistogram_lock = 0;
304
305 class JNITraceWrapper : public StackObj {
306 public:
307 JNITraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) {
308 if (TraceJNICalls) {
309 va_list ap;
310 va_start(ap, format);
311 tty->print("JNI ");
312 tty->vprint_cr(format, ap);
313 va_end(ap);
314 }
315 }
316 };
317
318 class JNIHistogramElement : public HistogramElement {
319 public:
320 JNIHistogramElement(const char* name);
321 };
322
323 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
324 _name = elementName;
325 uintx count = 0;
326
327 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
328 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
329 count +=1;
330 if ( (WarnOnStalledSpinLock > 0)
331 && (count % WarnOnStalledSpinLock == 0)) {
332 warning("JNIHistogram_lock seems to be stalled");
333 }
334 }
335 }
336
337
338 if(JNIHistogram == NULL)
339 JNIHistogram = new Histogram("JNI Call Counts",100);
340
341 JNIHistogram->add_element(this);
342 Atomic::dec(&JNIHistogram_lock);
343 }
344
345 #define JNICountWrapper(arg) \
346 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
347 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
348 if (e != NULL) e->increment_count()
349 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
350 #else
351 #define JNIWrapper(arg)
352 #endif
353
354
355 // Implementation of JNI entries
356
357 #ifndef USDT2
358 DT_RETURN_MARK_DECL(DefineClass, jclass);
359 #else /* USDT2 */
360 DT_RETURN_MARK_DECL(DefineClass, jclass
361 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
362 #endif /* USDT2 */
363
364 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
365 const jbyte *buf, jsize bufLen))
366 JNIWrapper("DefineClass");
367
368 #ifndef USDT2
369 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
370 env, name, loaderRef, buf, bufLen);
371 #else /* USDT2 */
372 HOTSPOT_JNI_DEFINECLASS_ENTRY(
373 env, (char*) name, loaderRef, (char*) buf, bufLen);
374 #endif /* USDT2 */
375 jclass cls = NULL;
376 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
377
378 TempNewSymbol class_name = NULL;
379 // Since exceptions can be thrown, class initialization can take place
380 // if name is NULL no check for class name in .class stream has to be made.
381 if (name != NULL) {
382 const int str_len = (int)strlen(name);
383 if (str_len > Symbol::max_length()) {
384 // It's impossible to create this class; the name cannot fit
385 // into the constant pool.
386 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
387 }
388 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
389 }
390 ResourceMark rm(THREAD);
391 ClassFileStream st((u1*) buf, bufLen, NULL);
392 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
393
394 if (UsePerfData && !class_loader.is_null()) {
395 // check whether the current caller thread holds the lock or not.
396 // If not, increment the corresponding counter
397 if (ObjectSynchronizer::
398 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
399 ObjectSynchronizer::owner_self) {
400 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
401 }
402 }
403 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
404 Handle(), &st, true,
405 CHECK_NULL);
406
407 if (TraceClassResolution && k != NULL) {
408 trace_class_resolution(k);
409 }
410
411 cls = (jclass)JNIHandles::make_local(
412 env, k->java_mirror());
413 return cls;
414 JNI_END
415
416
417
418 static bool first_time_FindClass = true;
419
420 #ifndef USDT2
421 DT_RETURN_MARK_DECL(FindClass, jclass);
422 #else /* USDT2 */
423 DT_RETURN_MARK_DECL(FindClass, jclass
424 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
425 #endif /* USDT2 */
426
427 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
428 JNIWrapper("FindClass");
429 #ifndef USDT2
430 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
431 #else /* USDT2 */
432 HOTSPOT_JNI_FINDCLASS_ENTRY(
433 env, (char *)name);
434 #endif /* USDT2 */
435
436 jclass result = NULL;
437 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
438
439 // Remember if we are the first invocation of jni_FindClass
440 bool first_time = first_time_FindClass;
441 first_time_FindClass = false;
442
443 // Sanity check the name: it cannot be null or larger than the maximum size
444 // name we can fit in the constant pool.
445 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
446 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
447 }
448
449 //%note jni_3
450 Handle loader;
451 Handle protection_domain;
452 // Find calling class
453 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
454 if (k.not_null()) {
455 loader = Handle(THREAD, k->class_loader());
456 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
457 // in the correct class context.
458 if (loader.is_null() &&
459 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
460 JavaValue result(T_OBJECT);
461 JavaCalls::call_static(&result, k,
462 vmSymbols::getFromClass_name(),
463 vmSymbols::void_class_signature(),
464 thread);
465 if (HAS_PENDING_EXCEPTION) {
466 Handle ex(thread, thread->pending_exception());
467 CLEAR_PENDING_EXCEPTION;
468 THROW_HANDLE_0(ex);
469 }
470 oop mirror = (oop) result.get_jobject();
471 loader = Handle(THREAD,
472 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
473 protection_domain = Handle(THREAD,
474 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
475 }
476 } else {
477 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
478 loader = Handle(THREAD, SystemDictionary::java_system_loader());
479 }
480
481 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
482 result = find_class_from_class_loader(env, sym, true, loader,
483 protection_domain, true, thread);
484
485 if (TraceClassResolution && result != NULL) {
486 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
487 }
488
489 // If we were the first invocation of jni_FindClass, we enable compilation again
490 // rather than just allowing invocation counter to overflow and decay.
491 // Controlled by flag DelayCompilationDuringStartup.
492 if (first_time && !CompileTheWorld)
493 CompilationPolicy::completed_vm_startup();
494
495 return result;
496 JNI_END
497
498 #ifndef USDT2
499 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
500 #else /* USDT2 */
501 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
502 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
503 #endif /* USDT2 */
504
505 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
506 JNIWrapper("FromReflectedMethod");
507 #ifndef USDT2
508 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
509 #else /* USDT2 */
510 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
511 env, method);
512 #endif /* USDT2 */
513 jmethodID ret = NULL;
514 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
515
516 // method is a handle to a java.lang.reflect.Method object
517 oop reflected = JNIHandles::resolve_non_null(method);
518 oop mirror = NULL;
519 int slot = 0;
520
521 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
522 mirror = java_lang_reflect_Constructor::clazz(reflected);
523 slot = java_lang_reflect_Constructor::slot(reflected);
524 } else {
525 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
526 mirror = java_lang_reflect_Method::clazz(reflected);
527 slot = java_lang_reflect_Method::slot(reflected);
528 }
529 Klass* k = java_lang_Class::as_Klass(mirror);
530
531 KlassHandle k1(THREAD, k);
532 // Make sure class is initialized before handing id's out to methods
533 k1()->initialize(CHECK_NULL);
534 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
535 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
536 return ret;
537 JNI_END
538
539 #ifndef USDT2
540 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
541 #else /* USDT2 */
542 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
543 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
544 #endif /* USDT2 */
545
546 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
547 JNIWrapper("FromReflectedField");
548 #ifndef USDT2
549 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
550 #else /* USDT2 */
551 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
552 env, field);
553 #endif /* USDT2 */
554 jfieldID ret = NULL;
555 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
556
557 // field is a handle to a java.lang.reflect.Field object
558 oop reflected = JNIHandles::resolve_non_null(field);
559 oop mirror = java_lang_reflect_Field::clazz(reflected);
560 Klass* k = java_lang_Class::as_Klass(mirror);
561 int slot = java_lang_reflect_Field::slot(reflected);
562 int modifiers = java_lang_reflect_Field::modifiers(reflected);
563
564 KlassHandle k1(THREAD, k);
565 // Make sure class is initialized before handing id's out to fields
566 k1()->initialize(CHECK_NULL);
567
568 // First check if this is a static field
569 if (modifiers & JVM_ACC_STATIC) {
570 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
571 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
572 assert(id != NULL, "corrupt Field object");
573 debug_only(id->set_is_static_field_id();)
574 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
575 ret = jfieldIDWorkaround::to_static_jfieldID(id);
576 return ret;
577 }
578
579 // The slot is the index of the field description in the field-array
580 // The jfieldID is the offset of the field within the object
581 // It may also have hash bits for k, if VerifyJNIFields is turned on.
582 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
583 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
584 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
585 return ret;
586 JNI_END
587
588 #ifndef USDT2
589 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
590 #else /* USDT2 */
591 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
592 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
593 #endif /* USDT2 */
594
595 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
596 JNIWrapper("ToReflectedMethod");
597 #ifndef USDT2
598 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
599 #else /* USDT2 */
600 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
601 env, cls, (uintptr_t) method_id, isStatic);
602 #endif /* USDT2 */
603 jobject ret = NULL;
604 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
605
606 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
607 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
608 oop reflection_method;
609 if (m->is_initializer()) {
610 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
611 } else {
612 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
613 }
614 ret = JNIHandles::make_local(env, reflection_method);
615 return ret;
616 JNI_END
617
618 #ifndef USDT2
619 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
620 #else /* USDT2 */
621 DT_RETURN_MARK_DECL(GetSuperclass, jclass
622 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
623 #endif /* USDT2 */
624
625 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
626 JNIWrapper("GetSuperclass");
627 #ifndef USDT2
628 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
629 #else /* USDT2 */
630 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
631 env, sub);
632 #endif /* USDT2 */
633 jclass obj = NULL;
634 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
635
636 oop mirror = JNIHandles::resolve_non_null(sub);
637 // primitive classes return NULL
638 if (java_lang_Class::is_primitive(mirror)) return NULL;
639
640 // Rules of Class.getSuperClass as implemented by KLass::java_super:
641 // arrays return Object
642 // interfaces return NULL
643 // proper classes return Klass::super()
644 Klass* k = java_lang_Class::as_Klass(mirror);
645 if (k->is_interface()) return NULL;
646
647 // return mirror for superclass
648 Klass* super = k->java_super();
649 // super2 is the value computed by the compiler's getSuperClass intrinsic:
650 debug_only(Klass* super2 = ( k->oop_is_array()
651 ? SystemDictionary::Object_klass()
652 : k->super() ) );
653 assert(super == super2,
654 "java_super computation depends on interface, array, other super");
655 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
656 return obj;
657 JNI_END
658
659 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
660 JNIWrapper("IsSubclassOf");
661 #ifndef USDT2
662 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
663 #else /* USDT2 */
664 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
665 env, sub, super);
666 #endif /* USDT2 */
667 oop sub_mirror = JNIHandles::resolve_non_null(sub);
668 oop super_mirror = JNIHandles::resolve_non_null(super);
669 if (java_lang_Class::is_primitive(sub_mirror) ||
670 java_lang_Class::is_primitive(super_mirror)) {
671 jboolean ret = (sub_mirror == super_mirror);
672 #ifndef USDT2
673 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
674 #else /* USDT2 */
675 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
676 ret);
677 #endif /* USDT2 */
678 return ret;
679 }
680 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
681 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
682 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
683 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
684 JNI_TRUE : JNI_FALSE;
685 #ifndef USDT2
686 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
687 #else /* USDT2 */
688 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
689 ret);
690 #endif /* USDT2 */
691 return ret;
692 JNI_END
693
694 #ifndef USDT2
695 DT_RETURN_MARK_DECL(Throw, jint);
696 #else /* USDT2 */
697 DT_RETURN_MARK_DECL(Throw, jint
698 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
699 #endif /* USDT2 */
700
701 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
702 JNIWrapper("Throw");
703 #ifndef USDT2
704 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
705 #else /* USDT2 */
706 HOTSPOT_JNI_THROW_ENTRY(
707 env, obj);
708 #endif /* USDT2 */
709 jint ret = JNI_OK;
710 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
711
712 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
713 ShouldNotReachHere();
714 return 0; // Mute compiler.
715 JNI_END
716
717 #ifndef USDT2
718 DT_RETURN_MARK_DECL(ThrowNew, jint);
719 #else /* USDT2 */
720 DT_RETURN_MARK_DECL(ThrowNew, jint
721 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
722 #endif /* USDT2 */
723
724 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
725 JNIWrapper("ThrowNew");
726 #ifndef USDT2
727 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
728 #else /* USDT2 */
729 HOTSPOT_JNI_THROWNEW_ENTRY(
730 env, clazz, (char *) message);
731 #endif /* USDT2 */
732 jint ret = JNI_OK;
733 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
734
735 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
736 Symbol* name = k->name();
737 Handle class_loader (THREAD, k->class_loader());
738 Handle protection_domain (THREAD, k->protection_domain());
739 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
740 ShouldNotReachHere();
741 return 0; // Mute compiler.
742 JNI_END
743
744
745 // JNI functions only transform a pending async exception to a synchronous
746 // exception in ExceptionOccurred and ExceptionCheck calls, since
747 // delivering an async exception in other places won't change the native
748 // code's control flow and would be harmful when native code further calls
749 // JNI functions with a pending exception. Async exception is also checked
750 // during the call, so ExceptionOccurred/ExceptionCheck won't return
751 // false but deliver the async exception at the very end during
752 // state transition.
753
754 static void jni_check_async_exceptions(JavaThread *thread) {
755 assert(thread == Thread::current(), "must be itself");
756 thread->check_and_handle_async_exceptions();
757 }
758
759 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
760 JNIWrapper("ExceptionOccurred");
761 #ifndef USDT2
762 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
763 #else /* USDT2 */
764 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
765 env);
766 #endif /* USDT2 */
767 jni_check_async_exceptions(thread);
768 oop exception = thread->pending_exception();
769 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
770 #ifndef USDT2
771 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
772 #else /* USDT2 */
773 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
774 ret);
775 #endif /* USDT2 */
776 return ret;
777 JNI_END
778
779
780 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
781 JNIWrapper("ExceptionDescribe");
782 #ifndef USDT2
783 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
784 #else /* USDT2 */
785 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
786 env);
787 #endif /* USDT2 */
788 if (thread->has_pending_exception()) {
789 Handle ex(thread, thread->pending_exception());
790 thread->clear_pending_exception();
791 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
792 // Don't print anything if we are being killed.
793 } else {
794 jio_fprintf(defaultStream::error_stream(), "Exception ");
795 if (thread != NULL && thread->threadObj() != NULL) {
796 ResourceMark rm(THREAD);
797 jio_fprintf(defaultStream::error_stream(),
798 "in thread \"%s\" ", thread->get_thread_name());
799 }
800 if (ex->is_a(SystemDictionary::Throwable_klass())) {
801 JavaValue result(T_VOID);
802 JavaCalls::call_virtual(&result,
803 ex,
804 KlassHandle(THREAD,
805 SystemDictionary::Throwable_klass()),
806 vmSymbols::printStackTrace_name(),
807 vmSymbols::void_method_signature(),
808 THREAD);
809 // If an exception is thrown in the call it gets thrown away. Not much
810 // we can do with it. The native code that calls this, does not check
811 // for the exception - hence, it might still be in the thread when DestroyVM gets
812 // called, potentially causing a few asserts to trigger - since no pending exception
813 // is expected.
814 CLEAR_PENDING_EXCEPTION;
815 } else {
816 ResourceMark rm(THREAD);
817 jio_fprintf(defaultStream::error_stream(),
818 ". Uncaught exception of type %s.",
819 ex->klass()->external_name());
820 }
821 }
822 }
823 #ifndef USDT2
824 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
825 #else /* USDT2 */
826 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
827 );
828 #endif /* USDT2 */
829 JNI_END
830
831
832 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
833 JNIWrapper("ExceptionClear");
834 #ifndef USDT2
835 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
836 #else /* USDT2 */
837 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
838 env);
839 #endif /* USDT2 */
840
841 // The jni code might be using this API to clear java thrown exception.
842 // So just mark jvmti thread exception state as exception caught.
843 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
844 if (state != NULL && state->is_exception_detected()) {
845 state->set_exception_caught();
846 }
847 thread->clear_pending_exception();
848 #ifndef USDT2
849 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
850 #else /* USDT2 */
851 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
852 );
853 #endif /* USDT2 */
854 JNI_END
855
856
857 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
858 JNIWrapper("FatalError");
859 #ifndef USDT2
860 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
861 #else /* USDT2 */
862 HOTSPOT_JNI_FATALERROR_ENTRY(
863 env, (char *) msg);
864 #endif /* USDT2 */
865 tty->print_cr("FATAL ERROR in native method: %s", msg);
866 thread->print_stack();
867 os::abort(); // Dump core and abort
868 JNI_END
869
870
871 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
872 JNIWrapper("PushLocalFrame");
873 #ifndef USDT2
874 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
875 #else /* USDT2 */
876 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
877 env, capacity);
878 #endif /* USDT2 */
879 //%note jni_11
880 if (capacity < 0 ||
881 ((MaxJNILocalCapacity > 0) && (capacity > MaxJNILocalCapacity))) {
882 #ifndef USDT2
883 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
884 #else /* USDT2 */
885 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
886 (uint32_t)JNI_ERR);
887 #endif /* USDT2 */
888 return JNI_ERR;
889 }
890 JNIHandleBlock* old_handles = thread->active_handles();
891 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
892 assert(new_handles != NULL, "should not be NULL");
893 new_handles->set_pop_frame_link(old_handles);
894 thread->set_active_handles(new_handles);
895 jint ret = JNI_OK;
896 #ifndef USDT2
897 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
898 #else /* USDT2 */
899 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
900 ret);
901 #endif /* USDT2 */
902 return ret;
903 JNI_END
904
905
906 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
907 JNIWrapper("PopLocalFrame");
908 #ifndef USDT2
909 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
910 #else /* USDT2 */
911 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
912 env, result);
913 #endif /* USDT2 */
914 //%note jni_11
915 Handle result_handle(thread, JNIHandles::resolve(result));
916 JNIHandleBlock* old_handles = thread->active_handles();
917 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
918 if (new_handles != NULL) {
919 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
920 // This way code will still work if PopLocalFrame is called without a corresponding
921 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
922 // the release_block call will release the blocks.
923 thread->set_active_handles(new_handles);
924 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
925 JNIHandleBlock::release_block(old_handles, thread); // may block
926 result = JNIHandles::make_local(thread, result_handle());
927 }
928 #ifndef USDT2
929 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
930 #else /* USDT2 */
931 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
932 result);
933 #endif /* USDT2 */
934 return result;
935 JNI_END
936
937
938 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
939 JNIWrapper("NewGlobalRef");
940 #ifndef USDT2
941 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
942 #else /* USDT2 */
943 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
944 env, ref);
945 #endif /* USDT2 */
946 Handle ref_handle(thread, JNIHandles::resolve(ref));
947 jobject ret = JNIHandles::make_global(ref_handle);
948 #ifndef USDT2
949 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
950 #else /* USDT2 */
951 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
952 ret);
953 #endif /* USDT2 */
954 return ret;
955 JNI_END
956
957 // Must be JNI_ENTRY (with HandleMark)
958 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
959 JNIWrapper("DeleteGlobalRef");
960 #ifndef USDT2
961 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
962 #else /* USDT2 */
963 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
964 env, ref);
965 #endif /* USDT2 */
966 JNIHandles::destroy_global(ref);
967 #ifndef USDT2
968 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
969 #else /* USDT2 */
970 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
971 );
972 #endif /* USDT2 */
973 JNI_END
974
975 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
976 JNIWrapper("DeleteLocalRef");
977 #ifndef USDT2
978 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
979 #else /* USDT2 */
980 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
981 env, obj);
982 #endif /* USDT2 */
983 JNIHandles::destroy_local(obj);
984 #ifndef USDT2
985 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
986 #else /* USDT2 */
987 HOTSPOT_JNI_DELETELOCALREF_RETURN(
988 );
989 #endif /* USDT2 */
990 JNI_END
991
992 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
993 JNIWrapper("IsSameObject");
994 #ifndef USDT2
995 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
996 #else /* USDT2 */
997 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
998 env, r1, r2);
999 #endif /* USDT2 */
1000 oop a = JNIHandles::resolve(r1);
1001 oop b = JNIHandles::resolve(r2);
1002 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1003 #ifndef USDT2
1004 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1005 #else /* USDT2 */
1006 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1007 ret);
1008 #endif /* USDT2 */
1009 return ret;
1010 JNI_END
1011
1012
1013 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1014 JNIWrapper("NewLocalRef");
1015 #ifndef USDT2
1016 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1017 #else /* USDT2 */
1018 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1019 env, ref);
1020 #endif /* USDT2 */
1021 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1022 #ifndef USDT2
1023 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1024 #else /* USDT2 */
1025 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1026 ret);
1027 #endif /* USDT2 */
1028 return ret;
1029 JNI_END
1030
1031 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1032 JNIWrapper("EnsureLocalCapacity");
1033 #ifndef USDT2
1034 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1035 #else /* USDT2 */
1036 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1037 env, capacity);
1038 #endif /* USDT2 */
1039 jint ret;
1040 if (capacity >= 0 &&
1041 ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) {
1042 ret = JNI_OK;
1043 } else {
1044 ret = JNI_ERR;
1045 }
1046 #ifndef USDT2
1047 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1048 #else /* USDT2 */
1049 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1050 ret);
1051 #endif /* USDT2 */
1052 return ret;
1053 JNI_END
1054
1055 // Return the Handle Type
1056 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1057 JNIWrapper("GetObjectRefType");
1058 #ifndef USDT2
1059 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1060 #else /* USDT2 */
1061 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1062 env, obj);
1063 #endif /* USDT2 */
1064 jobjectRefType ret;
1065 if (JNIHandles::is_local_handle(thread, obj) ||
1066 JNIHandles::is_frame_handle(thread, obj))
1067 ret = JNILocalRefType;
1068 else if (JNIHandles::is_global_handle(obj))
1069 ret = JNIGlobalRefType;
1070 else if (JNIHandles::is_weak_global_handle(obj))
1071 ret = JNIWeakGlobalRefType;
1072 else
1073 ret = JNIInvalidRefType;
1074 #ifndef USDT2
1075 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1076 #else /* USDT2 */
1077 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1078 (void *) ret);
1079 #endif /* USDT2 */
1080 return ret;
1081 JNI_END
1082
1083
1084 class JNI_ArgumentPusher : public SignatureIterator {
1085 protected:
1086 JavaCallArguments* _arguments;
1087
1088 virtual void get_bool () = 0;
1089 virtual void get_char () = 0;
1090 virtual void get_short () = 0;
1091 virtual void get_byte () = 0;
1092 virtual void get_int () = 0;
1093 virtual void get_long () = 0;
1094 virtual void get_float () = 0;
1095 virtual void get_double () = 0;
1096 virtual void get_object () = 0;
1097
1098 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1099 this->_return_type = T_ILLEGAL;
1100 _arguments = NULL;
1101 }
1102
1103 public:
1104 virtual void iterate( uint64_t fingerprint ) = 0;
1105
1106 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1107
1108 inline void do_bool() { if (!is_return_type()) get_bool(); }
1109 inline void do_char() { if (!is_return_type()) get_char(); }
1110 inline void do_short() { if (!is_return_type()) get_short(); }
1111 inline void do_byte() { if (!is_return_type()) get_byte(); }
1112 inline void do_int() { if (!is_return_type()) get_int(); }
1113 inline void do_long() { if (!is_return_type()) get_long(); }
1114 inline void do_float() { if (!is_return_type()) get_float(); }
1115 inline void do_double() { if (!is_return_type()) get_double(); }
1116 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1117 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1118 inline void do_void() { }
1119
1120 JavaCallArguments* arguments() { return _arguments; }
1121 void push_receiver(Handle h) { _arguments->push_oop(h); }
1122 };
1123
1124
1125 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1126 protected:
1127 va_list _ap;
1128
1129 inline void get_bool() {
1130 // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and
1131 // 0 to JNI_FALSE. Boolean return values from native are normalized the same in
1132 // TemplateInterpreterGenerator::generate_result_handler_for and
1133 // SharedRuntime::generate_native_wrapper.
1134 jboolean b = va_arg(_ap, jint);
1135 _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));
1136 }
1137 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1138 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1139 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1140 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1141
1142 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1143
1144 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1145 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1146 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1147 inline void get_object() { _arguments->push_jobject(va_arg(_ap, jobject)); }
1148
1149 inline void set_ap(va_list rap) {
1150 #ifdef va_copy
1151 va_copy(_ap, rap);
1152 #elif defined (__va_copy)
1153 __va_copy(_ap, rap);
1154 #else
1155 _ap = rap;
1156 #endif
1157 }
1158
1159 public:
1160 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1161 : JNI_ArgumentPusher(signature) {
1162 set_ap(rap);
1163 }
1164 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1165 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1166 set_ap(rap);
1167 }
1168
1169 // Optimized path if we have the bitvector form of signature
1170 void iterate( uint64_t fingerprint ) {
1171 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1172 else {
1173 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1174 result_feature_mask);
1175
1176 assert(fingerprint, "Fingerprint should not be 0");
1177 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1178 while ( 1 ) {
1179 switch ( fingerprint & parameter_feature_mask ) {
1180 case bool_parm:
1181 get_bool();
1182 break;
1183 case char_parm:
1184 get_char();
1185 break;
1186 case short_parm:
1187 get_short();
1188 break;
1189 case byte_parm:
1190 get_byte();
1191 break;
1192 case int_parm:
1193 get_int();
1194 break;
1195 case obj_parm:
1196 get_object();
1197 break;
1198 case long_parm:
1199 get_long();
1200 break;
1201 case float_parm:
1202 get_float();
1203 break;
1204 case double_parm:
1205 get_double();
1206 break;
1207 case done_parm:
1208 return;
1209 break;
1210 default:
1211 ShouldNotReachHere();
1212 break;
1213 }
1214 fingerprint >>= parameter_feature_size;
1215 }
1216 }
1217 }
1218 };
1219
1220
1221 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1222 protected:
1223 const jvalue *_ap;
1224
1225 inline void get_bool() {
1226 // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and
1227 // 0 to JNI_FALSE. Boolean return values from native are normalized the same in
1228 // TemplateInterpreterGenerator::generate_result_handler_for and
1229 // SharedRuntime::generate_native_wrapper.
1230 jboolean b = (_ap++)->z;
1231 _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));
1232 }
1233 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1234 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1235 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1236 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1237
1238 inline void get_long() { _arguments->push_long((_ap++)->j); }
1239 inline void get_float() { _arguments->push_float((_ap++)->f); }
1240 inline void get_double() { _arguments->push_double((_ap++)->d);}
1241 inline void get_object() { _arguments->push_jobject((_ap++)->l); }
1242
1243 inline void set_ap(const jvalue *rap) { _ap = rap; }
1244
1245 public:
1246 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1247 : JNI_ArgumentPusher(signature) {
1248 set_ap(rap);
1249 }
1250 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1251 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1252 set_ap(rap);
1253 }
1254
1255 // Optimized path if we have the bitvector form of signature
1256 void iterate( uint64_t fingerprint ) {
1257 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1258 else {
1259 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1260 result_feature_mask);
1261 assert(fingerprint, "Fingerprint should not be 0");
1262 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1263 while ( 1 ) {
1264 switch ( fingerprint & parameter_feature_mask ) {
1265 case bool_parm:
1266 get_bool();
1267 break;
1268 case char_parm:
1269 get_char();
1270 break;
1271 case short_parm:
1272 get_short();
1273 break;
1274 case byte_parm:
1275 get_byte();
1276 break;
1277 case int_parm:
1278 get_int();
1279 break;
1280 case obj_parm:
1281 get_object();
1282 break;
1283 case long_parm:
1284 get_long();
1285 break;
1286 case float_parm:
1287 get_float();
1288 break;
1289 case double_parm:
1290 get_double();
1291 break;
1292 case done_parm:
1293 return;
1294 break;
1295 default:
1296 ShouldNotReachHere();
1297 break;
1298 }
1299 fingerprint >>= parameter_feature_size;
1300 }
1301 }
1302 }
1303 };
1304
1305
1306 enum JNICallType {
1307 JNI_STATIC,
1308 JNI_VIRTUAL,
1309 JNI_NONVIRTUAL
1310 };
1311
1312
1313
1314 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1315 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1316
1317 // Create object to hold arguments for the JavaCall, and associate it with
1318 // the jni parser
1319 ResourceMark rm(THREAD);
1320 int number_of_parameters = method->size_of_parameters();
1321 JavaCallArguments java_args(number_of_parameters);
1322 args->set_java_argument_object(&java_args);
1323
1324 assert(method->is_static(), "method should be static");
1325
1326 // Fill out JavaCallArguments object
1327 args->iterate( Fingerprinter(method).fingerprint() );
1328 // Initialize result type
1329 result->set_type(args->get_ret_type());
1330
1331 // Invoke the method. Result is returned as oop.
1332 JavaCalls::call(result, method, &java_args, CHECK);
1333
1334 // Convert result
1335 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1336 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1337 }
1338 }
1339
1340
1341 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1342 oop recv = JNIHandles::resolve(receiver);
1343 if (recv == NULL) {
1344 THROW(vmSymbols::java_lang_NullPointerException());
1345 }
1346 Handle h_recv(THREAD, recv);
1347
1348 int number_of_parameters;
1349 Method* selected_method;
1350 {
1351 Method* m = Method::resolve_jmethod_id(method_id);
1352 number_of_parameters = m->size_of_parameters();
1353 Klass* holder = m->method_holder();
1354 if (call_type != JNI_VIRTUAL) {
1355 selected_method = m;
1356 } else if (!m->has_itable_index()) {
1357 // non-interface call -- for that little speed boost, don't handlize
1358 debug_only(No_Safepoint_Verifier nosafepoint;)
1359 // jni_GetMethodID makes sure class is linked and initialized
1360 // so m should have a valid vtable index.
1361 assert(m->valid_vtable_index(), "no valid vtable index");
1362 int vtbl_index = m->vtable_index();
1363 if (vtbl_index != Method::nonvirtual_vtable_index) {
1364 Klass* k = h_recv->klass();
1365 // k might be an arrayKlassOop but all vtables start at
1366 // the same place. The cast is to avoid virtual call and assertion.
1367 InstanceKlass *ik = (InstanceKlass*)k;
1368 selected_method = ik->method_at_vtable(vtbl_index);
1369 } else {
1370 // final method
1371 selected_method = m;
1372 }
1373 } else {
1374 // interface call
1375 KlassHandle h_holder(THREAD, holder);
1376
1377 int itbl_index = m->itable_index();
1378 Klass* k = h_recv->klass();
1379 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1380 }
1381 }
1382
1383 methodHandle method(THREAD, selected_method);
1384
1385 // Create object to hold arguments for the JavaCall, and associate it with
1386 // the jni parser
1387 ResourceMark rm(THREAD);
1388 JavaCallArguments java_args(number_of_parameters);
1389 args->set_java_argument_object(&java_args);
1390
1391 // handle arguments
1392 assert(!method->is_static(), "method should not be static");
1393 args->push_receiver(h_recv); // Push jobject handle
1394
1395 // Fill out JavaCallArguments object
1396 args->iterate( Fingerprinter(method).fingerprint() );
1397 // Initialize result type
1398 result->set_type(args->get_ret_type());
1399
1400 // Invoke the method. Result is returned as oop.
1401 JavaCalls::call(result, method, &java_args, CHECK);
1402
1403 // Convert result
1404 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1405 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1406 }
1407 }
1408
1409
1410 static instanceOop alloc_object(jclass clazz, TRAPS) {
1411 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1412 k()->check_valid_for_instantiation(false, CHECK_NULL);
1413 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1414 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1415 return ih;
1416 }
1417
1418 #ifndef USDT2
1419 DT_RETURN_MARK_DECL(AllocObject, jobject);
1420 #else /* USDT2 */
1421 DT_RETURN_MARK_DECL(AllocObject, jobject
1422 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1423 #endif /* USDT2 */
1424
1425 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1426 JNIWrapper("AllocObject");
1427
1428 #ifndef USDT2
1429 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1430 #else /* USDT2 */
1431 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1432 env, clazz);
1433 #endif /* USDT2 */
1434 jobject ret = NULL;
1435 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1436
1437 instanceOop i = alloc_object(clazz, CHECK_NULL);
1438 ret = JNIHandles::make_local(env, i);
1439 return ret;
1440 JNI_END
1441
1442 #ifndef USDT2
1443 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1444 #else /* USDT2 */
1445 DT_RETURN_MARK_DECL(NewObjectA, jobject
1446 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1447 #endif /* USDT2 */
1448
1449 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1450 JNIWrapper("NewObjectA");
1451 #ifndef USDT2
1452 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1453 #else /* USDT2 */
1454 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1455 env, clazz, (uintptr_t) methodID);
1456 #endif /* USDT2 */
1457 jobject obj = NULL;
1458 DT_RETURN_MARK(NewObjectA, jobject, (const jobject&)obj);
1459
1460 instanceOop i = alloc_object(clazz, CHECK_NULL);
1461 obj = JNIHandles::make_local(env, i);
1462 JavaValue jvalue(T_VOID);
1463 JNI_ArgumentPusherArray ap(methodID, args);
1464 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1465 return obj;
1466 JNI_END
1467
1468 #ifndef USDT2
1469 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1470 #else /* USDT2 */
1471 DT_RETURN_MARK_DECL(NewObjectV, jobject
1472 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1473 #endif /* USDT2 */
1474
1475 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1476 JNIWrapper("NewObjectV");
1477 #ifndef USDT2
1478 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1479 #else /* USDT2 */
1480 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1481 env, clazz, (uintptr_t) methodID);
1482 #endif /* USDT2 */
1483 jobject obj = NULL;
1484 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1485
1486 instanceOop i = alloc_object(clazz, CHECK_NULL);
1487 obj = JNIHandles::make_local(env, i);
1488 JavaValue jvalue(T_VOID);
1489 JNI_ArgumentPusherVaArg ap(methodID, args);
1490 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1491 return obj;
1492 JNI_END
1493
1494 #ifndef USDT2
1495 DT_RETURN_MARK_DECL(NewObject, jobject);
1496 #else /* USDT2 */
1497 DT_RETURN_MARK_DECL(NewObject, jobject
1498 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1499 #endif /* USDT2 */
1500
1501 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1502 JNIWrapper("NewObject");
1503 #ifndef USDT2
1504 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1505 #else /* USDT2 */
1506 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1507 env, clazz, (uintptr_t) methodID);
1508 #endif /* USDT2 */
1509 jobject obj = NULL;
1510 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1511
1512 instanceOop i = alloc_object(clazz, CHECK_NULL);
1513 obj = JNIHandles::make_local(env, i);
1514 va_list args;
1515 va_start(args, methodID);
1516 JavaValue jvalue(T_VOID);
1517 JNI_ArgumentPusherVaArg ap(methodID, args);
1518 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1519 va_end(args);
1520 return obj;
1521 JNI_END
1522
1523
1524 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1525 JNIWrapper("GetObjectClass");
1526 #ifndef USDT2
1527 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1528 #else /* USDT2 */
1529 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1530 env, obj);
1531 #endif /* USDT2 */
1532 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1533 jclass ret =
1534 (jclass) JNIHandles::make_local(env, k->java_mirror());
1535 #ifndef USDT2
1536 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1537 #else /* USDT2 */
1538 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1539 ret);
1540 #endif /* USDT2 */
1541 return ret;
1542 JNI_END
1543
1544 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1545 JNIWrapper("IsInstanceOf");
1546 #ifndef USDT2
1547 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1548 #else /* USDT2 */
1549 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1550 env, obj, clazz);
1551 #endif /* USDT2 */
1552 jboolean ret = JNI_TRUE;
1553 if (obj != NULL) {
1554 ret = JNI_FALSE;
1555 Klass* k = java_lang_Class::as_Klass(
1556 JNIHandles::resolve_non_null(clazz));
1557 if (k != NULL) {
1558 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1559 }
1560 }
1561 #ifndef USDT2
1562 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1563 #else /* USDT2 */
1564 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1565 ret);
1566 #endif /* USDT2 */
1567 return ret;
1568 JNI_END
1569
1570
1571 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1572 const char *sig, bool is_static, TRAPS) {
1573 // %%%% This code should probably just call into a method in the LinkResolver
1574 //
1575 // The class should have been loaded (we have an instance of the class
1576 // passed in) so the method and signature should already be in the symbol
1577 // table. If they're not there, the method doesn't exist.
1578 const char *name_to_probe = (name_str == NULL)
1579 ? vmSymbols::object_initializer_name()->as_C_string()
1580 : name_str;
1581 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1582 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1583
1584 if (name == NULL || signature == NULL) {
1585 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1586 }
1587
1588 // Throw a NoSuchMethodError exception if we have an instance of a
1589 // primitive java.lang.Class
1590 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1591 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1592 }
1593
1594 KlassHandle klass(THREAD,
1595 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1596
1597 // Make sure class is linked and initialized before handing id's out to
1598 // Method*s.
1599 klass()->initialize(CHECK_NULL);
1600
1601 Method* m;
1602 if (name == vmSymbols::object_initializer_name() ||
1603 name == vmSymbols::class_initializer_name()) {
1604 // Never search superclasses for constructors
1605 if (klass->oop_is_instance()) {
1606 m = InstanceKlass::cast(klass())->find_method(name, signature);
1607 } else {
1608 m = NULL;
1609 }
1610 } else {
1611 m = klass->lookup_method(name, signature);
1612 if (m == NULL && klass->oop_is_instance()) {
1613 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1614 }
1615 }
1616 if (m == NULL || (m->is_static() != is_static)) {
1617 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1618 }
1619 return m->jmethod_id();
1620 }
1621
1622
1623 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1624 const char *name, const char *sig))
1625 JNIWrapper("GetMethodID");
1626 #ifndef USDT2
1627 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1628 #else /* USDT2 */
1629 HOTSPOT_JNI_GETMETHODID_ENTRY(
1630 env, clazz, (char *) name, (char *) sig);
1631 #endif /* USDT2 */
1632 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1633 #ifndef USDT2
1634 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1635 #else /* USDT2 */
1636 HOTSPOT_JNI_GETMETHODID_RETURN(
1637 (uintptr_t) ret);
1638 #endif /* USDT2 */
1639 return ret;
1640 JNI_END
1641
1642
1643 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1644 const char *name, const char *sig))
1645 JNIWrapper("GetStaticMethodID");
1646 #ifndef USDT2
1647 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1648 #else /* USDT2 */
1649 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1650 env, (char *) clazz, (char *) name, (char *)sig);
1651 #endif /* USDT2 */
1652 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1653 #ifndef USDT2
1654 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1655 #else /* USDT2 */
1656 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1657 (uintptr_t) ret);
1658 #endif /* USDT2 */
1659 return ret;
1660 JNI_END
1661
1662
1663
1664 //
1665 // Calling Methods
1666 //
1667
1668 #ifndef USDT2
1669 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1670 \
1671 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1672 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1673 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1674 \
1675 JNI_ENTRY(ResultType, \
1676 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1677 JNIWrapper("Call" XSTR(Result) "Method"); \
1678 \
1679 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1680 ResultType ret = 0;\
1681 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1682 (const ResultType&)ret);\
1683 \
1684 va_list args; \
1685 va_start(args, methodID); \
1686 JavaValue jvalue(Tag); \
1687 JNI_ArgumentPusherVaArg ap(methodID, args); \
1688 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1689 va_end(args); \
1690 ret = jvalue.get_##ResultType(); \
1691 return ret;\
1692 JNI_END \
1693 \
1694 \
1695 JNI_ENTRY(ResultType, \
1696 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1697 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1698 \
1699 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1700 ResultType ret = 0;\
1701 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1702 (const ResultType&)ret);\
1703 \
1704 JavaValue jvalue(Tag); \
1705 JNI_ArgumentPusherVaArg ap(methodID, args); \
1706 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1707 ret = jvalue.get_##ResultType(); \
1708 return ret;\
1709 JNI_END \
1710 \
1711 \
1712 JNI_ENTRY(ResultType, \
1713 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1714 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1715 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1716 ResultType ret = 0;\
1717 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1718 (const ResultType&)ret);\
1719 \
1720 JavaValue jvalue(Tag); \
1721 JNI_ArgumentPusherArray ap(methodID, args); \
1722 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1723 ret = jvalue.get_##ResultType(); \
1724 return ret;\
1725 JNI_END
1726
1727 // the runtime type of subword integral basic types is integer
1728 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1729 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1730 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1731 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1732
1733 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1734 DEFINE_CALLMETHOD(jint, Int, T_INT)
1735 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1736 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1737 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1738
1739 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1740 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1741 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1742
1743 #else /* USDT2 */
1744
1745 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1746 , EntryProbe, ReturnProbe) \
1747 \
1748 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1749 , ReturnProbe); \
1750 \
1751 JNI_ENTRY(ResultType, \
1752 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1753 JNIWrapper("Call" XSTR(Result) "Method"); \
1754 \
1755 EntryProbe; \
1756 ResultType ret = 0;\
1757 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1758 (const ResultType&)ret);\
1759 \
1760 va_list args; \
1761 va_start(args, methodID); \
1762 JavaValue jvalue(Tag); \
1763 JNI_ArgumentPusherVaArg ap(methodID, args); \
1764 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1765 va_end(args); \
1766 ret = jvalue.get_##ResultType(); \
1767 return ret;\
1768 JNI_END
1769
1770 // the runtime type of subword integral basic types is integer
1771 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1772 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1773 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1774 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1775 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1776 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1777 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1778 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1779 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1780 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1781 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1782 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1783
1784 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1785 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1786 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1787 DEFINE_CALLMETHOD(jint, Int, T_INT,
1788 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1789 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1790 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1791 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1792 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1793 // Float and double probes don't return value because dtrace doesn't currently support it
1794 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1795 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1796 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1797 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1798 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1799 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1800
1801 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1802 , EntryProbe, ReturnProbe) \
1803 \
1804 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1805 , ReturnProbe); \
1806 \
1807 JNI_ENTRY(ResultType, \
1808 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1809 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1810 \
1811 EntryProbe;\
1812 ResultType ret = 0;\
1813 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1814 (const ResultType&)ret);\
1815 \
1816 JavaValue jvalue(Tag); \
1817 JNI_ArgumentPusherVaArg ap(methodID, args); \
1818 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1819 ret = jvalue.get_##ResultType(); \
1820 return ret;\
1821 JNI_END
1822
1823 // the runtime type of subword integral basic types is integer
1824 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1825 , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1826 HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))
1827 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1828 , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1829 HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))
1830 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1831 , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1832 HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))
1833 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1834 , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1835 HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))
1836
1837 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1838 , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1839 HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))
1840 DEFINE_CALLMETHODV(jint, Int, T_INT,
1841 HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1842 HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))
1843 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1844 , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1845 HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))
1846 // Float and double probes don't return value because dtrace doesn't currently support it
1847 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1848 , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1849 HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())
1850 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1851 , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1852 HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())
1853
1854 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1855 , EntryProbe, ReturnProbe) \
1856 \
1857 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1858 , ReturnProbe); \
1859 \
1860 JNI_ENTRY(ResultType, \
1861 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1862 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1863 EntryProbe; \
1864 ResultType ret = 0;\
1865 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1866 (const ResultType&)ret);\
1867 \
1868 JavaValue jvalue(Tag); \
1869 JNI_ArgumentPusherArray ap(methodID, args); \
1870 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1871 ret = jvalue.get_##ResultType(); \
1872 return ret;\
1873 JNI_END
1874
1875 // the runtime type of subword integral basic types is integer
1876 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1877 , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1878 HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))
1879 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1880 , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1881 HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))
1882 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1883 , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1884 HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))
1885 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1886 , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1887 HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))
1888
1889 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1890 , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1891 HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))
1892 DEFINE_CALLMETHODA(jint, Int, T_INT,
1893 HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1894 HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))
1895 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1896 , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1897 HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))
1898 // Float and double probes don't return value because dtrace doesn't currently support it
1899 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1900 , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1901 HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())
1902 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1903 , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1904 HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())
1905
1906 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1907 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1908 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1909
1910 #endif /* USDT2 */
1911
1912 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1913 JNIWrapper("CallVoidMethod");
1914 #ifndef USDT2
1915 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1916 #else /* USDT2 */
1917 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1918 env, obj, (uintptr_t) methodID);
1919 #endif /* USDT2 */
1920 DT_VOID_RETURN_MARK(CallVoidMethod);
1921
1922 va_list args;
1923 va_start(args, methodID);
1924 JavaValue jvalue(T_VOID);
1925 JNI_ArgumentPusherVaArg ap(methodID, args);
1926 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1927 va_end(args);
1928 JNI_END
1929
1930
1931 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1932 JNIWrapper("CallVoidMethodV");
1933 #ifndef USDT2
1934 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1935 #else /* USDT2 */
1936 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1937 env, obj, (uintptr_t) methodID);
1938 #endif /* USDT2 */
1939 DT_VOID_RETURN_MARK(CallVoidMethodV);
1940
1941 JavaValue jvalue(T_VOID);
1942 JNI_ArgumentPusherVaArg ap(methodID, args);
1943 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1944 JNI_END
1945
1946
1947 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1948 JNIWrapper("CallVoidMethodA");
1949 #ifndef USDT2
1950 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1951 #else /* USDT2 */
1952 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1953 env, obj, (uintptr_t) methodID);
1954 #endif /* USDT2 */
1955 DT_VOID_RETURN_MARK(CallVoidMethodA);
1956
1957 JavaValue jvalue(T_VOID);
1958 JNI_ArgumentPusherArray ap(methodID, args);
1959 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1960 JNI_END
1961
1962
1963 #ifndef USDT2
1964 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1965 \
1966 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1967 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1968 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1969 \
1970 JNI_ENTRY(ResultType, \
1971 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1972 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1973 \
1974 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1975 ResultType ret;\
1976 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1977 (const ResultType&)ret);\
1978 \
1979 va_list args; \
1980 va_start(args, methodID); \
1981 JavaValue jvalue(Tag); \
1982 JNI_ArgumentPusherVaArg ap(methodID, args); \
1983 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1984 va_end(args); \
1985 ret = jvalue.get_##ResultType(); \
1986 return ret;\
1987 JNI_END \
1988 \
1989 JNI_ENTRY(ResultType, \
1990 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1991 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1992 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1993 ResultType ret;\
1994 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1995 (const ResultType&)ret);\
1996 \
1997 JavaValue jvalue(Tag); \
1998 JNI_ArgumentPusherVaArg ap(methodID, args); \
1999 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2000 ret = jvalue.get_##ResultType(); \
2001 return ret;\
2002 JNI_END \
2003 \
2004 JNI_ENTRY(ResultType, \
2005 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2006 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2007 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2008 ResultType ret;\
2009 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2010 (const ResultType&)ret);\
2011 \
2012 JavaValue jvalue(Tag); \
2013 JNI_ArgumentPusherArray ap(methodID, args); \
2014 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2015 ret = jvalue.get_##ResultType(); \
2016 return ret;\
2017 JNI_END
2018
2019 // the runtime type of subword integral basic types is integer
2020 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2021 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2022 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2023 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2024
2025 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2026 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2027 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2028 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2029 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2030
2031
2032 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2033 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2034 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2035
2036 #else /* USDT2 */
2037
2038 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2039 , EntryProbe, ReturnProbe) \
2040 \
2041 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2042 , ReturnProbe);\
2043 \
2044 JNI_ENTRY(ResultType, \
2045 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2046 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2047 \
2048 EntryProbe;\
2049 ResultType ret;\
2050 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2051 (const ResultType&)ret);\
2052 \
2053 va_list args; \
2054 va_start(args, methodID); \
2055 JavaValue jvalue(Tag); \
2056 JNI_ArgumentPusherVaArg ap(methodID, args); \
2057 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2058 va_end(args); \
2059 ret = jvalue.get_##ResultType(); \
2060 return ret;\
2061 JNI_END
2062
2063 // the runtime type of subword integral basic types is integer
2064 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2065 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2066 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2067 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2068 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2069 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2070 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2071 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2072 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2073 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2074 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2075 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2076
2077 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2078 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2079 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2080 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2081 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2082 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2083 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2084 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2085 // Float and double probes don't return value because dtrace doesn't currently support it
2086 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2087 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2088 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2089 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2090 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2091 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2092 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2093
2094 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2095 , EntryProbe, ReturnProbe) \
2096 \
2097 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2098 , ReturnProbe);\
2099 \
2100 JNI_ENTRY(ResultType, \
2101 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2102 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2103 \
2104 EntryProbe;\
2105 ResultType ret;\
2106 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2107 (const ResultType&)ret);\
2108 \
2109 JavaValue jvalue(Tag); \
2110 JNI_ArgumentPusherVaArg ap(methodID, args); \
2111 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2112 ret = jvalue.get_##ResultType(); \
2113 return ret;\
2114 JNI_END
2115
2116 // the runtime type of subword integral basic types is integer
2117 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2118 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2119 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2120 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2121 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2122 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2123 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2124 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2125 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2126 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2127 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2128 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2129
2130 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2131 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2132 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2133 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2134 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2135 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2136 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2137 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2138 // Float and double probes don't return value because dtrace doesn't currently support it
2139 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2140 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2141 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2142 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2143 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2144 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2145 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2146
2147 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2148 , EntryProbe, ReturnProbe) \
2149 \
2150 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2151 , ReturnProbe);\
2152 \
2153 JNI_ENTRY(ResultType, \
2154 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2155 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2156 \
2157 EntryProbe;\
2158 ResultType ret;\
2159 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2160 (const ResultType&)ret);\
2161 \
2162 JavaValue jvalue(Tag); \
2163 JNI_ArgumentPusherArray ap(methodID, args); \
2164 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2165 ret = jvalue.get_##ResultType(); \
2166 return ret;\
2167 JNI_END
2168
2169 // the runtime type of subword integral basic types is integer
2170 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2171 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2172 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2173 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2174 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2175 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2176 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2177 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2178 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2179 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2180 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2181 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2182
2183 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2184 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2185 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2186 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2187 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2188 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2189 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2190 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2191 // Float and double probes don't return value because dtrace doesn't currently support it
2192 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2193 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2194 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2195 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2196 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2197 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2198 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2199
2200 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2201 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2202 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2203 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2204 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2205 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2206 #endif /* USDT2 */
2207
2208 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2209 JNIWrapper("CallNonvirtualVoidMethod");
2210
2211 #ifndef USDT2
2212 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2213 env, obj, cls, methodID);
2214 #else /* USDT2 */
2215 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2216 env, obj, cls, (uintptr_t) methodID);
2217 #endif /* USDT2 */
2218 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2219
2220 va_list args;
2221 va_start(args, methodID);
2222 JavaValue jvalue(T_VOID);
2223 JNI_ArgumentPusherVaArg ap(methodID, args);
2224 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2225 va_end(args);
2226 JNI_END
2227
2228
2229 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2230 JNIWrapper("CallNonvirtualVoidMethodV");
2231
2232 #ifndef USDT2
2233 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2234 env, obj, cls, methodID);
2235 #else /* USDT2 */
2236 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2237 env, obj, cls, (uintptr_t) methodID);
2238 #endif /* USDT2 */
2239 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2240
2241 JavaValue jvalue(T_VOID);
2242 JNI_ArgumentPusherVaArg ap(methodID, args);
2243 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2244 JNI_END
2245
2246
2247 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2248 JNIWrapper("CallNonvirtualVoidMethodA");
2249 #ifndef USDT2
2250 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2251 env, obj, cls, methodID);
2252 #else /* USDT2 */
2253 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2254 env, obj, cls, (uintptr_t) methodID);
2255 #endif /* USDT2 */
2256 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2257 JavaValue jvalue(T_VOID);
2258 JNI_ArgumentPusherArray ap(methodID, args);
2259 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2260 JNI_END
2261
2262
2263 #ifndef USDT2
2264 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2265 \
2266 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2267 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2268 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2269 \
2270 JNI_ENTRY(ResultType, \
2271 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2272 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2273 \
2274 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2275 ResultType ret = 0;\
2276 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2277 (const ResultType&)ret);\
2278 \
2279 va_list args; \
2280 va_start(args, methodID); \
2281 JavaValue jvalue(Tag); \
2282 JNI_ArgumentPusherVaArg ap(methodID, args); \
2283 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2284 va_end(args); \
2285 ret = jvalue.get_##ResultType(); \
2286 return ret;\
2287 JNI_END \
2288 \
2289 JNI_ENTRY(ResultType, \
2290 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2291 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2292 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2293 ResultType ret = 0;\
2294 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2295 (const ResultType&)ret);\
2296 \
2297 JavaValue jvalue(Tag); \
2298 JNI_ArgumentPusherVaArg ap(methodID, args); \
2299 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2300 ret = jvalue.get_##ResultType(); \
2301 return ret;\
2302 JNI_END \
2303 \
2304 JNI_ENTRY(ResultType, \
2305 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2306 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2307 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2308 ResultType ret = 0;\
2309 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2310 (const ResultType&)ret);\
2311 \
2312 JavaValue jvalue(Tag); \
2313 JNI_ArgumentPusherArray ap(methodID, args); \
2314 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2315 ret = jvalue.get_##ResultType(); \
2316 return ret;\
2317 JNI_END
2318
2319 // the runtime type of subword integral basic types is integer
2320 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2321 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2322 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2323 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2324
2325 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2326 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2327 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2328 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2329 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2330
2331
2332 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2333 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2334 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2335
2336 #else /* USDT2 */
2337
2338 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2339 , EntryProbe, ResultProbe) \
2340 \
2341 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2342 , ResultProbe); \
2343 \
2344 JNI_ENTRY(ResultType, \
2345 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2346 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2347 \
2348 EntryProbe; \
2349 ResultType ret = 0;\
2350 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2351 (const ResultType&)ret);\
2352 \
2353 va_list args; \
2354 va_start(args, methodID); \
2355 JavaValue jvalue(Tag); \
2356 JNI_ArgumentPusherVaArg ap(methodID, args); \
2357 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2358 va_end(args); \
2359 ret = jvalue.get_##ResultType(); \
2360 return ret;\
2361 JNI_END
2362
2363 // the runtime type of subword integral basic types is integer
2364 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2365 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2366 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2367 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2368 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2369 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2370 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2371 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2372 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2373 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2374 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2375 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2376
2377 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2378 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2379 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2380 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2381 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2382 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2383 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2384 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2385 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2386 // Float and double probes don't return value because dtrace doesn't currently support it
2387 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2388 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2389 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2390 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2391 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2392 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2393
2394 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2395 , EntryProbe, ResultProbe) \
2396 \
2397 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2398 , ResultProbe); \
2399 \
2400 JNI_ENTRY(ResultType, \
2401 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2402 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2403 \
2404 EntryProbe; \
2405 ResultType ret = 0;\
2406 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2407 (const ResultType&)ret);\
2408 \
2409 JavaValue jvalue(Tag); \
2410 JNI_ArgumentPusherVaArg ap(methodID, args); \
2411 /* Make sure class is initialized before trying to invoke its method */ \
2412 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2413 k()->initialize(CHECK_0); \
2414 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2415 va_end(args); \
2416 ret = jvalue.get_##ResultType(); \
2417 return ret;\
2418 JNI_END
2419
2420 // the runtime type of subword integral basic types is integer
2421 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2422 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2423 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2424 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2425 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2426 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2427 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2428 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2429 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2430 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2431 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2432 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2433
2434 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2435 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2436 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2437 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2438 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2439 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2440 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2441 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2442 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2443 // Float and double probes don't return value because dtrace doesn't currently support it
2444 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2445 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2446 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2447 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2448 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2449 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2450
2451 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2452 , EntryProbe, ResultProbe) \
2453 \
2454 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2455 , ResultProbe); \
2456 \
2457 JNI_ENTRY(ResultType, \
2458 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2459 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2460 \
2461 EntryProbe; \
2462 ResultType ret = 0;\
2463 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2464 (const ResultType&)ret);\
2465 \
2466 JavaValue jvalue(Tag); \
2467 JNI_ArgumentPusherArray ap(methodID, args); \
2468 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2469 ret = jvalue.get_##ResultType(); \
2470 return ret;\
2471 JNI_END
2472
2473 // the runtime type of subword integral basic types is integer
2474 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2475 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2476 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2477 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2478 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2479 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2480 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2481 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2482 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2483 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2484 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2485 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2486
2487 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2488 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2489 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2490 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2491 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2492 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2493 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2494 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2495 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2496 // Float and double probes don't return value because dtrace doesn't currently support it
2497 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2498 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2499 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2500 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2501 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2502 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2503
2504 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2505 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2506 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2507 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2508 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2509 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2510 #endif /* USDT2 */
2511
2512 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2513 JNIWrapper("CallStaticVoidMethod");
2514 #ifndef USDT2
2515 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2516 #else /* USDT2 */
2517 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2518 env, cls, (uintptr_t) methodID);
2519 #endif /* USDT2 */
2520 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2521
2522 va_list args;
2523 va_start(args, methodID);
2524 JavaValue jvalue(T_VOID);
2525 JNI_ArgumentPusherVaArg ap(methodID, args);
2526 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2527 va_end(args);
2528 JNI_END
2529
2530
2531 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2532 JNIWrapper("CallStaticVoidMethodV");
2533 #ifndef USDT2
2534 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2535 #else /* USDT2 */
2536 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2537 env, cls, (uintptr_t) methodID);
2538 #endif /* USDT2 */
2539 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2540
2541 JavaValue jvalue(T_VOID);
2542 JNI_ArgumentPusherVaArg ap(methodID, args);
2543 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2544 JNI_END
2545
2546
2547 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2548 JNIWrapper("CallStaticVoidMethodA");
2549 #ifndef USDT2
2550 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2551 #else /* USDT2 */
2552 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2553 env, cls, (uintptr_t) methodID);
2554 #endif /* USDT2 */
2555 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2556
2557 JavaValue jvalue(T_VOID);
2558 JNI_ArgumentPusherArray ap(methodID, args);
2559 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2560 JNI_END
2561
2562
2563 //
2564 // Accessing Fields
2565 //
2566
2567
2568 #ifndef USDT2
2569 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2570 #else /* USDT2 */
2571 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2572 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2573 #endif /* USDT2 */
2574
2575 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2576 const char *name, const char *sig))
2577 JNIWrapper("GetFieldID");
2578 #ifndef USDT2
2579 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2580 #else /* USDT2 */
2581 HOTSPOT_JNI_GETFIELDID_ENTRY(
2582 env, clazz, (char *) name, (char *) sig);
2583 #endif /* USDT2 */
2584 jfieldID ret = 0;
2585 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2586
2587 // The class should have been loaded (we have an instance of the class
2588 // passed in) so the field and signature should already be in the symbol
2589 // table. If they're not there, the field doesn't exist.
2590 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2591 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2592 if (fieldname == NULL || signame == NULL) {
2593 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2594 }
2595 KlassHandle k(THREAD,
2596 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2597 // Make sure class is initialized before handing id's out to fields
2598 k()->initialize(CHECK_NULL);
2599
2600 fieldDescriptor fd;
2601 if (!k()->oop_is_instance() ||
2602 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2603 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2604 }
2605
2606 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2607 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2608 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2609 return ret;
2610 JNI_END
2611
2612
2613 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2614 JNIWrapper("GetObjectField");
2615 #ifndef USDT2
2616 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2617 #else /* USDT2 */
2618 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2619 env, obj, (uintptr_t) fieldID);
2620 #endif /* USDT2 */
2621 oop o = JNIHandles::resolve_non_null(obj);
2622 Klass* k = o->klass();
2623 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2624 // Keep JVMTI addition small and only check enabled flag here.
2625 // jni_GetField_probe() assumes that is okay to create handles.
2626 if (JvmtiExport::should_post_field_access()) {
2627 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2628 }
2629 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2630 #if INCLUDE_ALL_GCS
2631 // If G1 is enabled and we are accessing the value of the referent
2632 // field in a reference object then we need to register a non-null
2633 // referent with the SATB barrier.
2634 if (UseG1GC || (UseShenandoahGC && ShenandoahSATBBarrier)) {
2635 bool needs_barrier = false;
2636
2637 if (ret != NULL &&
2638 offset == java_lang_ref_Reference::referent_offset &&
2639 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2640 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2641 needs_barrier = true;
2642 }
2643
2644 if (needs_barrier) {
2645 oop referent = JNIHandles::resolve(ret);
2646 G1SATBCardTableModRefBS::enqueue(referent);
2647 }
2648 }
2649 #endif // INCLUDE_ALL_GCS
2650 #ifndef USDT2
2651 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2652 #else /* USDT2 */
2653 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2654 ret);
2655 #endif /* USDT2 */
2656 return ret;
2657 JNI_END
2658
2659
2660 #ifndef USDT2
2661 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2662 \
2663 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2664 \
2665 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2666 JNIWrapper("Get" XSTR(Result) "Field"); \
2667 \
2668 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2669 Return ret = 0;\
2670 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2671 \
2672 oop o = JNIHandles::resolve_non_null(obj); \
2673 Klass* k = o->klass(); \
2674 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2675 /* Keep JVMTI addition small and only check enabled flag here. */ \
2676 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2677 /* and creates a ResetNoHandleMark. */ \
2678 if (JvmtiExport::should_post_field_access()) { \
2679 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2680 } \
2681 ret = o->Fieldname##_field(offset); \
2682 return ret; \
2683 JNI_END
2684
2685 DEFINE_GETFIELD(jboolean, bool, Boolean)
2686 DEFINE_GETFIELD(jbyte, byte, Byte)
2687 DEFINE_GETFIELD(jchar, char, Char)
2688 DEFINE_GETFIELD(jshort, short, Short)
2689 DEFINE_GETFIELD(jint, int, Int)
2690 DEFINE_GETFIELD(jlong, long, Long)
2691 DEFINE_GETFIELD(jfloat, float, Float)
2692 DEFINE_GETFIELD(jdouble, double, Double)
2693
2694 #else /* USDT2 */
2695
2696 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2697 , EntryProbe, ReturnProbe) \
2698 \
2699 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2700 , ReturnProbe); \
2701 \
2702 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2703 JNIWrapper("Get" XSTR(Result) "Field"); \
2704 \
2705 EntryProbe; \
2706 Return ret = 0;\
2707 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2708 \
2709 oop o = JNIHandles::resolve_non_null(obj); \
2710 Klass* k = o->klass(); \
2711 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2712 /* Keep JVMTI addition small and only check enabled flag here. */ \
2713 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2714 /* and creates a ResetNoHandleMark. */ \
2715 if (JvmtiExport::should_post_field_access()) { \
2716 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2717 } \
2718 ret = o->Fieldname##_field(offset); \
2719 return ret; \
2720 JNI_END
2721
2722 DEFINE_GETFIELD(jboolean, bool, Boolean
2723 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2724 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2725 DEFINE_GETFIELD(jbyte, byte, Byte
2726 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2727 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2728 DEFINE_GETFIELD(jchar, char, Char
2729 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2730 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2731 DEFINE_GETFIELD(jshort, short, Short
2732 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2733 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2734 DEFINE_GETFIELD(jint, int, Int
2735 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2736 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2737 DEFINE_GETFIELD(jlong, long, Long
2738 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2739 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2740 // Float and double probes don't return value because dtrace doesn't currently support it
2741 DEFINE_GETFIELD(jfloat, float, Float
2742 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2743 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2744 DEFINE_GETFIELD(jdouble, double, Double
2745 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2746 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2747 #endif /* USDT2 */
2748
2749 address jni_GetBooleanField_addr() {
2750 return (address)jni_GetBooleanField;
2751 }
2752 address jni_GetByteField_addr() {
2753 return (address)jni_GetByteField;
2754 }
2755 address jni_GetCharField_addr() {
2756 return (address)jni_GetCharField;
2757 }
2758 address jni_GetShortField_addr() {
2759 return (address)jni_GetShortField;
2760 }
2761 address jni_GetIntField_addr() {
2762 return (address)jni_GetIntField;
2763 }
2764 address jni_GetLongField_addr() {
2765 return (address)jni_GetLongField;
2766 }
2767 address jni_GetFloatField_addr() {
2768 return (address)jni_GetFloatField;
2769 }
2770 address jni_GetDoubleField_addr() {
2771 return (address)jni_GetDoubleField;
2772 }
2773
2774 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2775 JNIWrapper("SetObjectField");
2776 #ifndef USDT2
2777 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2778 #else /* USDT2 */
2779 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2780 env, obj, (uintptr_t) fieldID, value);
2781 #endif /* USDT2 */
2782 oop o = JNIHandles::resolve_non_null(obj);
2783 Klass* k = o->klass();
2784 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2785 // Keep JVMTI addition small and only check enabled flag here.
2786 // jni_SetField_probe_nh() assumes that is not okay to create handles
2787 // and creates a ResetNoHandleMark.
2788 if (JvmtiExport::should_post_field_modification()) {
2789 jvalue field_value;
2790 field_value.l = value;
2791 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2792 }
2793 o->obj_field_put(offset, JNIHandles::resolve(value));
2794 #ifndef USDT2
2795 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2796 #else /* USDT2 */
2797 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2798 );
2799 #endif /* USDT2 */
2800 JNI_END
2801
2802 #ifndef USDT2
2803 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2804 \
2805 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2806 JNIWrapper("Set" XSTR(Result) "Field"); \
2807 \
2808 FP_SELECT_##Result( \
2809 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2810 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2811 \
2812 oop o = JNIHandles::resolve_non_null(obj); \
2813 Klass* k = o->klass(); \
2814 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2815 /* Keep JVMTI addition small and only check enabled flag here. */ \
2816 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2817 /* and creates a ResetNoHandleMark. */ \
2818 if (JvmtiExport::should_post_field_modification()) { \
2819 jvalue field_value; \
2820 field_value.unionType = value; \
2821 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2822 } \
2823 o->Fieldname##_field_put(offset, value); \
2824 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2825 JNI_END
2826
2827 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2828 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2829 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2830 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2831 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2832 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2833 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2834 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2835
2836 #else /* USDT2 */
2837
2838 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2839 , EntryProbe, ReturnProbe) \
2840 \
2841 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2842 JNIWrapper("Set" XSTR(Result) "Field"); \
2843 \
2844 EntryProbe; \
2845 \
2846 oop o = JNIHandles::resolve_non_null(obj); \
2847 Klass* k = o->klass(); \
2848 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2849 /* Keep JVMTI addition small and only check enabled flag here. */ \
2850 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2851 /* and creates a ResetNoHandleMark. */ \
2852 if (JvmtiExport::should_post_field_modification()) { \
2853 jvalue field_value; \
2854 field_value.unionType = value; \
2855 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2856 } \
2857 if (SigType == 'Z') { value = ((jboolean)value) & 1; } \
2858 o->Fieldname##_field_put(offset, value); \
2859 ReturnProbe; \
2860 JNI_END
2861
2862 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2863 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2864 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2865 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2866 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2867 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2868 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2869 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2870 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2871 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2872 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2873 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2874 DEFINE_SETFIELD(jint, int, Int, 'I', i
2875 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2876 HOTSPOT_JNI_SETINTFIELD_RETURN())
2877 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2878 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2879 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2880 // Float and double probes don't return value because dtrace doesn't currently support it
2881 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2882 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2883 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2884 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2885 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2886 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2887 #endif /* USDT2 */
2888
2889 #ifndef USDT2
2890 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2891 #else /* USDT2 */
2892 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2893 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2894 #endif /* USDT2 */
2895
2896 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2897 JNIWrapper("ToReflectedField");
2898 #ifndef USDT2
2899 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2900 env, cls, fieldID, isStatic);
2901 #else /* USDT2 */
2902 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2903 env, cls, (uintptr_t) fieldID, isStatic);
2904 #endif /* USDT2 */
2905 jobject ret = NULL;
2906 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2907
2908 fieldDescriptor fd;
2909 bool found = false;
2910 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2911
2912 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2913
2914 if (isStatic) {
2915 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2916 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2917 assert(id->is_static_field_id(), "invalid static field id");
2918 found = id->find_local_field(&fd);
2919 } else {
2920 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2921 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2922 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2923 }
2924 assert(found, "bad fieldID passed into jni_ToReflectedField");
2925 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2926 ret = JNIHandles::make_local(env, reflected);
2927 return ret;
2928 JNI_END
2929
2930
2931 //
2932 // Accessing Static Fields
2933 //
2934 #ifndef USDT2
2935 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2936 #else /* USDT2 */
2937 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2938 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2939 #endif /* USDT2 */
2940
2941 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2942 const char *name, const char *sig))
2943 JNIWrapper("GetStaticFieldID");
2944 #ifndef USDT2
2945 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2946 #else /* USDT2 */
2947 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2948 env, clazz, (char *) name, (char *) sig);
2949 #endif /* USDT2 */
2950 jfieldID ret = NULL;
2951 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2952
2953 // The class should have been loaded (we have an instance of the class
2954 // passed in) so the field and signature should already be in the symbol
2955 // table. If they're not there, the field doesn't exist.
2956 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2957 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2958 if (fieldname == NULL || signame == NULL) {
2959 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2960 }
2961 KlassHandle k(THREAD,
2962 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2963 // Make sure class is initialized before handing id's out to static fields
2964 k()->initialize(CHECK_NULL);
2965
2966 fieldDescriptor fd;
2967 if (!k()->oop_is_instance() ||
2968 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2969 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2970 }
2971
2972 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2973 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2974 debug_only(id->set_is_static_field_id();)
2975
2976 debug_only(id->verify(fd.field_holder()));
2977
2978 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2979 return ret;
2980 JNI_END
2981
2982
2983 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2984 JNIWrapper("GetStaticObjectField");
2985 #ifndef USDT2
2986 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2987 #else /* USDT2 */
2988 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2989 env, clazz, (uintptr_t) fieldID);
2990 #endif /* USDT2 */
2991 #if INCLUDE_JNI_CHECK
2992 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2993 #endif // INCLUDE_JNI_CHECK
2994 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2995 assert(id->is_static_field_id(), "invalid static field id");
2996 // Keep JVMTI addition small and only check enabled flag here.
2997 // jni_GetField_probe() assumes that is okay to create handles.
2998 if (JvmtiExport::should_post_field_access()) {
2999 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3000 }
3001 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3002 #ifndef USDT2
3003 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3004 #else /* USDT2 */
3005 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3006 ret);
3007 #endif /* USDT2 */
3008 return ret;
3009 JNI_END
3010
3011 #ifndef USDT2
3012 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3013 \
3014 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3015 \
3016 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3017 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3018 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3019 Return ret = 0;\
3020 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3021 (const Return&)ret);\
3022 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3023 assert(id->is_static_field_id(), "invalid static field id"); \
3024 /* Keep JVMTI addition small and only check enabled flag here. */ \
3025 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3026 if (JvmtiExport::should_post_field_access()) { \
3027 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3028 } \
3029 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3030 return ret;\
3031 JNI_END
3032
3033 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3034 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3035 DEFINE_GETSTATICFIELD(jchar, char, Char)
3036 DEFINE_GETSTATICFIELD(jshort, short, Short)
3037 DEFINE_GETSTATICFIELD(jint, int, Int)
3038 DEFINE_GETSTATICFIELD(jlong, long, Long)
3039 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3040 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3041
3042 #else /* USDT2 */
3043
3044 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3045 , EntryProbe, ReturnProbe) \
3046 \
3047 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3048 , ReturnProbe); \
3049 \
3050 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3051 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3052 EntryProbe; \
3053 Return ret = 0;\
3054 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3055 (const Return&)ret);\
3056 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3057 assert(id->is_static_field_id(), "invalid static field id"); \
3058 /* Keep JVMTI addition small and only check enabled flag here. */ \
3059 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3060 if (JvmtiExport::should_post_field_access()) { \
3061 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3062 } \
3063 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3064 return ret;\
3065 JNI_END
3066
3067 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3068 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3069 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3070 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3071 DEFINE_GETSTATICFIELD(jchar, char, Char
3072 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3073 DEFINE_GETSTATICFIELD(jshort, short, Short
3074 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3075 DEFINE_GETSTATICFIELD(jint, int, Int
3076 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3077 DEFINE_GETSTATICFIELD(jlong, long, Long
3078 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3079 // Float and double probes don't return value because dtrace doesn't currently support it
3080 DEFINE_GETSTATICFIELD(jfloat, float, Float
3081 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3082 DEFINE_GETSTATICFIELD(jdouble, double, Double
3083 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3084 #endif /* USDT2 */
3085
3086 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3087 JNIWrapper("SetStaticObjectField");
3088 #ifndef USDT2
3089 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3090 #else /* USDT2 */
3091 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3092 env, clazz, (uintptr_t) fieldID, value);
3093 #endif /* USDT2 */
3094 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3095 assert(id->is_static_field_id(), "invalid static field id");
3096 // Keep JVMTI addition small and only check enabled flag here.
3097 // jni_SetField_probe() assumes that is okay to create handles.
3098 if (JvmtiExport::should_post_field_modification()) {
3099 jvalue field_value;
3100 field_value.l = value;
3101 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3102 }
3103 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3104 #ifndef USDT2
3105 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3106 #else /* USDT2 */
3107 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3108 );
3109 #endif /* USDT2 */
3110 JNI_END
3111
3112
3113 #ifndef USDT2
3114 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3115 \
3116 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3117 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3118 FP_SELECT_##Result( \
3119 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3120 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3121 \
3122 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3123 assert(id->is_static_field_id(), "invalid static field id"); \
3124 /* Keep JVMTI addition small and only check enabled flag here. */ \
3125 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3126 if (JvmtiExport::should_post_field_modification()) { \
3127 jvalue field_value; \
3128 field_value.unionType = value; \
3129 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3130 } \
3131 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3132 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3133 JNI_END
3134
3135 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3136 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3137 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3138 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3139 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3140 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3141 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3142 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3143
3144 #else /* USDT2 */
3145
3146 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3147 , EntryProbe, ReturnProbe) \
3148 \
3149 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3150 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3151 EntryProbe; \
3152 \
3153 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3154 assert(id->is_static_field_id(), "invalid static field id"); \
3155 /* Keep JVMTI addition small and only check enabled flag here. */ \
3156 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3157 if (JvmtiExport::should_post_field_modification()) { \
3158 jvalue field_value; \
3159 field_value.unionType = value; \
3160 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3161 } \
3162 if (SigType == 'Z') { value = ((jboolean)value) & 1; } \
3163 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3164 ReturnProbe;\
3165 JNI_END
3166
3167 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3168 , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3169 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3170 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3171 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3172 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3173 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3174 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3175 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3176 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3177 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3178 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3179 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3180 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3181 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3182 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3183 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3184 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3185 // Float and double probes don't return value because dtrace doesn't currently support it
3186 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3187 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3188 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3189 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3190 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3191 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3192 #endif /* USDT2 */
3193
3194 //
3195 // String Operations
3196 //
3197
3198 // Unicode Interface
3199
3200 #ifndef USDT2
3201 DT_RETURN_MARK_DECL(NewString, jstring);
3202 #else /* USDT2 */
3203 DT_RETURN_MARK_DECL(NewString, jstring
3204 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3205 #endif /* USDT2 */
3206
3207 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3208 JNIWrapper("NewString");
3209 #ifndef USDT2
3210 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3211 #else /* USDT2 */
3212 HOTSPOT_JNI_NEWSTRING_ENTRY(
3213 env, (uint16_t *) unicodeChars, len);
3214 #endif /* USDT2 */
3215 jstring ret = NULL;
3216 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3217 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3218 ret = (jstring) JNIHandles::make_local(env, string);
3219 return ret;
3220 JNI_END
3221
3222
3223 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3224 JNIWrapper("GetStringLength");
3225 #ifndef USDT2
3226 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3227 #else /* USDT2 */
3228 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3229 env, string);
3230 #endif /* USDT2 */
3231 jsize ret = 0;
3232 oop s = JNIHandles::resolve_non_null(string);
3233 if (java_lang_String::value(s) != NULL) {
3234 ret = java_lang_String::length(s);
3235 }
3236 #ifndef USDT2
3237 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3238 #else /* USDT2 */
3239 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3240 ret);
3241 #endif /* USDT2 */
3242 return ret;
3243 JNI_END
3244
3245
3246 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3247 JNIEnv *env, jstring string, jboolean *isCopy))
3248 JNIWrapper("GetStringChars");
3249 #ifndef USDT2
3250 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3251 #else /* USDT2 */
3252 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3253 env, string, (uintptr_t *) isCopy);
3254 #endif /* USDT2 */
3255 jchar* buf = NULL;
3256 oop s = JNIHandles::resolve_non_null(string);
3257 typeArrayOop s_value = java_lang_String::value(s);
3258 if (s_value != NULL) {
3259 int s_len = java_lang_String::length(s);
3260 int s_offset = java_lang_String::offset(s);
3261 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3262 /* JNI Specification states return NULL on OOM */
3263 if (buf != NULL) {
3264 if (s_len > 0) {
3265 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3266 }
3267 buf[s_len] = 0;
3268 //%note jni_5
3269 if (isCopy != NULL) {
3270 *isCopy = JNI_TRUE;
3271 }
3272 }
3273 }
3274 #ifndef USDT2
3275 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3276 #else /* USDT2 */
3277 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3278 buf);
3279 #endif /* USDT2 */
3280 return buf;
3281 JNI_END
3282
3283
3284 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3285 JNIWrapper("ReleaseStringChars");
3286 #ifndef USDT2
3287 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3288 #else /* USDT2 */
3289 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3290 env, str, (uint16_t *) chars);
3291 #endif /* USDT2 */
3292 //%note jni_6
3293 if (chars != NULL) {
3294 // Since String objects are supposed to be immutable, don't copy any
3295 // new data back. A bad user will have to go after the char array.
3296 FreeHeap((void*) chars);
3297 }
3298 #ifndef USDT2
3299 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3300 #else /* USDT2 */
3301 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3302 );
3303 #endif /* USDT2 */
3304 JNI_END
3305
3306
3307 // UTF Interface
3308
3309 #ifndef USDT2
3310 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3311 #else /* USDT2 */
3312 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3313 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3314 #endif /* USDT2 */
3315
3316 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3317 JNIWrapper("NewStringUTF");
3318 #ifndef USDT2
3319 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3320 #else /* USDT2 */
3321 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3322 env, (char *) bytes);
3323 #endif /* USDT2 */
3324 jstring ret;
3325 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3326
3327 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3328 ret = (jstring) JNIHandles::make_local(env, result);
3329 return ret;
3330 JNI_END
3331
3332
3333 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3334 JNIWrapper("GetStringUTFLength");
3335 #ifndef USDT2
3336 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3337 #else /* USDT2 */
3338 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3339 env, string);
3340 #endif /* USDT2 */
3341 jsize ret = 0;
3342 oop java_string = JNIHandles::resolve_non_null(string);
3343 if (java_lang_String::value(java_string) != NULL) {
3344 ret = java_lang_String::utf8_length(java_string);
3345 }
3346 #ifndef USDT2
3347 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3348 #else /* USDT2 */
3349 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3350 ret);
3351 #endif /* USDT2 */
3352 return ret;
3353 JNI_END
3354
3355
3356 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3357 JNIWrapper("GetStringUTFChars");
3358 #ifndef USDT2
3359 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3360 #else /* USDT2 */
3361 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3362 env, string, (uintptr_t *) isCopy);
3363 #endif /* USDT2 */
3364 char* result = NULL;
3365 oop java_string = JNIHandles::resolve_non_null(string);
3366 if (java_lang_String::value(java_string) != NULL) {
3367 size_t length = java_lang_String::utf8_length(java_string);
3368 /* JNI Specification states return NULL on OOM */
3369 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
3370 if (result != NULL) {
3371 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3372 if (isCopy != NULL) {
3373 *isCopy = JNI_TRUE;
3374 }
3375 }
3376 }
3377 #ifndef USDT2
3378 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3379 #else /* USDT2 */
3380 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3381 result);
3382 #endif /* USDT2 */
3383 return result;
3384 JNI_END
3385
3386
3387 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3388 JNIWrapper("ReleaseStringUTFChars");
3389 #ifndef USDT2
3390 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3391 #else /* USDT2 */
3392 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3393 env, str, (char *) chars);
3394 #endif /* USDT2 */
3395 if (chars != NULL) {
3396 FreeHeap((char*) chars);
3397 }
3398 #ifndef USDT2
3399 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3400 #else /* USDT2 */
3401 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3402 );
3403 #endif /* USDT2 */
3404 JNI_END
3405
3406
3407 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3408 JNIWrapper("GetArrayLength");
3409 #ifndef USDT2
3410 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3411 #else /* USDT2 */
3412 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3413 env, array);
3414 #endif /* USDT2 */
3415 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3416 assert(a->is_array(), "must be array");
3417 jsize ret = a->length();
3418 #ifndef USDT2
3419 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3420 #else /* USDT2 */
3421 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3422 ret);
3423 #endif /* USDT2 */
3424 return ret;
3425 JNI_END
3426
3427
3428 //
3429 // Object Array Operations
3430 //
3431
3432 #ifndef USDT2
3433 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3434 #else /* USDT2 */
3435 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3436 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3437 #endif /* USDT2 */
3438
3439 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3440 JNIWrapper("NewObjectArray");
3441 #ifndef USDT2
3442 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3443 #else /* USDT2 */
3444 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3445 env, length, elementClass, initialElement);
3446 #endif /* USDT2 */
3447 jobjectArray ret = NULL;
3448 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3449 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3450 Klass* ako = ek()->array_klass(CHECK_NULL);
3451 KlassHandle ak = KlassHandle(THREAD, ako);
3452 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3453 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3454 oop initial_value = JNIHandles::resolve(initialElement);
3455 if (initial_value != NULL) { // array already initialized with NULL
3456 for (int index = 0; index < length; index++) {
3457 result->obj_at_put(index, initial_value);
3458 }
3459 }
3460 ret = (jobjectArray) JNIHandles::make_local(env, result);
3461 return ret;
3462 JNI_END
3463
3464 #ifndef USDT2
3465 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3466 #else /* USDT2 */
3467 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3468 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3469 #endif /* USDT2 */
3470
3471 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3472 JNIWrapper("GetObjectArrayElement");
3473 #ifndef USDT2
3474 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3475 #else /* USDT2 */
3476 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3477 env, array, index);
3478 #endif /* USDT2 */
3479 jobject ret = NULL;
3480 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3481 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3482 if (a->is_within_bounds(index)) {
3483 ret = JNIHandles::make_local(env, a->obj_at(index));
3484 return ret;
3485 } else {
3486 char buf[jintAsStringSize];
3487 sprintf(buf, "%d", index);
3488 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3489 }
3490 JNI_END
3491
3492 #ifndef USDT2
3493 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3494 #else /* USDT2 */
3495 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3496 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3497 #endif /* USDT2 */
3498
3499 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3500 JNIWrapper("SetObjectArrayElement");
3501 #ifndef USDT2
3502 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3503 #else /* USDT2 */
3504 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3505 env, array, index, value);
3506 #endif /* USDT2 */
3507 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3508
3509 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3510 oop v = JNIHandles::resolve(value);
3511 if (a->is_within_bounds(index)) {
3512 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3513 a->obj_at_put(index, v);
3514 } else {
3515 THROW(vmSymbols::java_lang_ArrayStoreException());
3516 }
3517 } else {
3518 char buf[jintAsStringSize];
3519 sprintf(buf, "%d", index);
3520 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3521 }
3522 JNI_END
3523
3524
3525 #ifndef USDT2
3526 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3527 \
3528 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3529 \
3530 JNI_ENTRY(Return, \
3531 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3532 JNIWrapper("New" XSTR(Result) "Array"); \
3533 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3534 Return ret = NULL;\
3535 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3536 \
3537 oop obj= oopFactory::Allocator(len, CHECK_0); \
3538 ret = (Return) JNIHandles::make_local(env, obj); \
3539 return ret;\
3540 JNI_END
3541
3542 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3543 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3544 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3545 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3546 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3547 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3548 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3549 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3550
3551 #else /* USDT2 */
3552
3553 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3554 ,EntryProbe,ReturnProbe) \
3555 \
3556 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3557 , ReturnProbe); \
3558 \
3559 JNI_ENTRY(Return, \
3560 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3561 JNIWrapper("New" XSTR(Result) "Array"); \
3562 EntryProbe; \
3563 Return ret = NULL;\
3564 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3565 \
3566 oop obj= oopFactory::Allocator(len, CHECK_0); \
3567 ret = (Return) JNIHandles::make_local(env, obj); \
3568 return ret;\
3569 JNI_END
3570
3571 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3572 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3573 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3574 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3575 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3576 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3577 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3578 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3579 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3580 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3581 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3582 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3583 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3584 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3585 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3586 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3587 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3588 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3589 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3590 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3591 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3592 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3593 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3594 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3595 #endif /* USDT2 */
3596
3597 // Return an address which will fault if the caller writes to it.
3598
3599 static char* get_bad_address() {
3600 static char* bad_address = NULL;
3601 if (bad_address == NULL) {
3602 size_t size = os::vm_allocation_granularity();
3603 bad_address = os::reserve_memory(size);
3604 if (bad_address != NULL) {
3605 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3606 /*is_committed*/false);
3607 MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);
3608 }
3609 }
3610 return bad_address;
3611 }
3612
3613
3614 #ifndef USDT2
3615 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3616 \
3617 JNI_QUICK_ENTRY(ElementType*, \
3618 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3619 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3620 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3621 /* allocate an chunk of memory in c land */ \
3622 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3623 ElementType* result; \
3624 int len = a->length(); \
3625 if (len == 0) { \
3626 /* Empty array: legal but useless, can't return NULL. \
3627 * Return a pointer to something useless. \
3628 * Avoid asserts in typeArrayOop. */ \
3629 result = (ElementType*)get_bad_address(); \
3630 } else { \
3631 /* JNI Specification states return NULL on OOM */ \
3632 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3633 if (result != NULL) { \
3634 /* copy the array to the c chunk */ \
3635 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3636 if (isCopy) { \
3637 *isCopy = JNI_TRUE; \
3638 } \
3639 } \
3640 } \
3641 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3642 return result; \
3643 JNI_END
3644
3645 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3646 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3647 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3648 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3649 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3650 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3651 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3652 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3653
3654 #else /* USDT2 */
3655
3656 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3657 , EntryProbe, ReturnProbe) \
3658 \
3659 JNI_QUICK_ENTRY(ElementType*, \
3660 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3661 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3662 EntryProbe; \
3663 /* allocate an chunk of memory in c land */ \
3664 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3665 ElementType* result; \
3666 int len = a->length(); \
3667 if (len == 0) { \
3668 /* Empty array: legal but useless, can't return NULL. \
3669 * Return a pointer to something useless. \
3670 * Avoid asserts in typeArrayOop. */ \
3671 result = (ElementType*)get_bad_address(); \
3672 } else { \
3673 /* JNI Specification states return NULL on OOM */ \
3674 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3675 if (result != NULL) { \
3676 /* copy the array to the c chunk */ \
3677 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3678 if (isCopy) { \
3679 *isCopy = JNI_TRUE; \
3680 } \
3681 } \
3682 } \
3683 ReturnProbe; \
3684 return result; \
3685 JNI_END
3686
3687 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3688 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3689 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3690 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3691 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3692 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3693 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3694 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3695 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3696 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3697 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3698 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3699 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3700 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3701 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3702 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3703 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3704 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3705 // Float and double probes don't return value because dtrace doesn't currently support it
3706 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3707 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3708 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3709 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3710 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3711 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3712 #endif /* USDT2 */
3713
3714 #ifndef USDT2
3715 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3716 \
3717 JNI_QUICK_ENTRY(void, \
3718 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3719 ElementType *buf, jint mode)) \
3720 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3721 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3722 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3723 int len = a->length(); \
3724 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3725 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3726 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3727 } \
3728 if ((mode == 0) || (mode == JNI_ABORT)) { \
3729 FreeHeap(buf); \
3730 } \
3731 } \
3732 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3733 JNI_END
3734
3735 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3736 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3737 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3738 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3739 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3740 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3741 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3742 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3743
3744 #else /* USDT2 */
3745
3746 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3747 , EntryProbe, ReturnProbe);\
3748 \
3749 JNI_QUICK_ENTRY(void, \
3750 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3751 ElementType *buf, jint mode)) \
3752 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3753 EntryProbe; \
3754 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3755 int len = a->length(); \
3756 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3757 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3758 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3759 } \
3760 if ((mode == 0) || (mode == JNI_ABORT)) { \
3761 FreeHeap(buf); \
3762 } \
3763 } \
3764 ReturnProbe; \
3765 JNI_END
3766
3767 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3768 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3769 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3770 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3771 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3772 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3773 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3774 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3775 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3776 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3777 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3778 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3779 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3780 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3781 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3782 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3783 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3784 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3785 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3786 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3787 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3788 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3789 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3790 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3791 #endif /* USDT2 */
3792
3793 #ifndef USDT2
3794 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3795 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3796 \
3797 JNI_ENTRY(void, \
3798 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3799 jsize len, ElementType *buf)) \
3800 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3801 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3802 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3803 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3804 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3805 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3806 } else { \
3807 if (len > 0) { \
3808 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3809 memcpy((u_char*) buf, \
3810 (u_char*) src->Tag##_at_addr(start), \
3811 len << sc); \
3812 } \
3813 } \
3814 JNI_END
3815
3816 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3817 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3818 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3819 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3820 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3821 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3822 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3823 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3824
3825 #else /* USDT2 */
3826
3827 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3828 , EntryProbe, ReturnProbe); \
3829 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3830 , ReturnProbe); \
3831 \
3832 JNI_ENTRY(void, \
3833 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3834 jsize len, ElementType *buf)) \
3835 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3836 EntryProbe; \
3837 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3838 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3839 if (start < 0 || len < 0 || (start > src->length() - len)) { \
3840 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3841 } else { \
3842 if (len > 0) { \
3843 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3844 memcpy((u_char*) buf, \
3845 (u_char*) src->Tag##_at_addr(start), \
3846 len << sc); \
3847 } \
3848 } \
3849 JNI_END
3850
3851 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3852 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3853 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3854 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3855 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3856 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3857 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3858 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3859 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3860 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3861 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3862 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3863 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3864 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3865 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3866 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3867 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3868 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3869 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3870 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3871 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3872 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3873 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3874 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3875 #endif /* USDT2 */
3876
3877 #ifndef USDT2
3878 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3879 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3880 \
3881 JNI_ENTRY(void, \
3882 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3883 jsize len, const ElementType *buf)) \
3884 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3885 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3886 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3887 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3888 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3889 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3890 } else { \
3891 if (len > 0) { \
3892 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3893 memcpy((u_char*) dst->Tag##_at_addr(start), \
3894 (u_char*) buf, \
3895 len << sc); \
3896 } \
3897 } \
3898 JNI_END
3899
3900 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3901 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3902 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3903 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3904 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3905 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3906 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3907 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3908
3909 #else /* USDT2 */
3910
3911 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3912 , EntryProbe, ReturnProbe); \
3913 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3914 ,ReturnProbe); \
3915 \
3916 JNI_ENTRY(void, \
3917 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3918 jsize len, const ElementType *buf)) \
3919 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3920 EntryProbe; \
3921 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3922 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3923 if (start < 0 || len < 0 || (start > dst->length() - len)) { \
3924 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3925 } else { \
3926 if (len > 0) { \
3927 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3928 memcpy((u_char*) dst->Tag##_at_addr(start), \
3929 (u_char*) buf, \
3930 len << sc); \
3931 } \
3932 } \
3933 JNI_END
3934
3935 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3936 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3937 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3938 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3939 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3940 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3941 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3942 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3943 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3944 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3945 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3946 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3947 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3948 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3949 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3950 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3951 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3952 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3953 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3954 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3955 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3956 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3957 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3958 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3959 #endif /* USDT2 */
3960
3961
3962 //
3963 // Interception of natives
3964 //
3965
3966 // The RegisterNatives call being attempted tried to register with a method that
3967 // is not native. Ask JVM TI what prefixes have been specified. Then check
3968 // to see if the native method is now wrapped with the prefixes. See the
3969 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3970 static Method* find_prefixed_native(KlassHandle k,
3971 Symbol* name, Symbol* signature, TRAPS) {
3972 #if INCLUDE_JVMTI
3973 ResourceMark rm(THREAD);
3974 Method* method;
3975 int name_len = name->utf8_length();
3976 char* name_str = name->as_utf8();
3977 int prefix_count;
3978 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3979 for (int i = 0; i < prefix_count; i++) {
3980 char* prefix = prefixes[i];
3981 int prefix_len = (int)strlen(prefix);
3982
3983 // try adding this prefix to the method name and see if it matches another method name
3984 int trial_len = name_len + prefix_len;
3985 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3986 strcpy(trial_name_str, prefix);
3987 strcat(trial_name_str, name_str);
3988 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3989 if (trial_name == NULL) {
3990 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3991 }
3992 method = k()->lookup_method(trial_name, signature);
3993 if (method == NULL) {
3994 continue; // signature doesn't match, try the next prefix
3995 }
3996 if (method->is_native()) {
3997 method->set_is_prefixed_native();
3998 return method; // wahoo, we found a prefixed version of the method, return it
3999 }
4000 // found as non-native, so prefix is good, add it, probably just need more prefixes
4001 name_len = trial_len;
4002 name_str = trial_name_str;
4003 }
4004 #endif // INCLUDE_JVMTI
4005 return NULL; // not found
4006 }
4007
4008 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
4009 Method* method = k()->lookup_method(name, signature);
4010 if (method == NULL) {
4011 ResourceMark rm;
4012 stringStream st;
4013 st.print("Method %s name or signature does not match",
4014 Method::name_and_sig_as_C_string(k(), name, signature));
4015 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4016 }
4017 if (!method->is_native()) {
4018 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
4019 method = find_prefixed_native(k, name, signature, THREAD);
4020 if (method == NULL) {
4021 ResourceMark rm;
4022 stringStream st;
4023 st.print("Method %s is not declared as native",
4024 Method::name_and_sig_as_C_string(k(), name, signature));
4025 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4026 }
4027 }
4028
4029 if (entry != NULL) {
4030 method->set_native_function(entry,
4031 Method::native_bind_event_is_interesting);
4032 } else {
4033 method->clear_native_function();
4034 }
4035 if (PrintJNIResolving) {
4036 ResourceMark rm(THREAD);
4037 tty->print_cr("[Registering JNI native method %s.%s]",
4038 method->method_holder()->external_name(),
4039 method->name()->as_C_string());
4040 }
4041 return true;
4042 }
4043
4044 #ifndef USDT2
4045 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4046 #else /* USDT2 */
4047 DT_RETURN_MARK_DECL(RegisterNatives, jint
4048 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4049 #endif /* USDT2 */
4050
4051 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4052 const JNINativeMethod *methods,
4053 jint nMethods))
4054 JNIWrapper("RegisterNatives");
4055 #ifndef USDT2
4056 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4057 #else /* USDT2 */
4058 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4059 env, clazz, (void *) methods, nMethods);
4060 #endif /* USDT2 */
4061 jint ret = 0;
4062 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4063
4064 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4065
4066 for (int index = 0; index < nMethods; index++) {
4067 const char* meth_name = methods[index].name;
4068 const char* meth_sig = methods[index].signature;
4069 int meth_name_len = (int)strlen(meth_name);
4070
4071 // The class should have been loaded (we have an instance of the class
4072 // passed in) so the method and signature should already be in the symbol
4073 // table. If they're not there, the method doesn't exist.
4074 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4075 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4076
4077 if (name == NULL || signature == NULL) {
4078 ResourceMark rm;
4079 stringStream st;
4080 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4081 // Must return negative value on failure
4082 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4083 }
4084
4085 bool res = register_native(h_k, name, signature,
4086 (address) methods[index].fnPtr, THREAD);
4087 if (!res) {
4088 ret = -1;
4089 break;
4090 }
4091 }
4092 return ret;
4093 JNI_END
4094
4095
4096 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4097 JNIWrapper("UnregisterNatives");
4098 #ifndef USDT2
4099 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4100 #else /* USDT2 */
4101 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4102 env, clazz);
4103 #endif /* USDT2 */
4104 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4105 //%note jni_2
4106 if (k->oop_is_instance()) {
4107 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4108 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4109 if (m->is_native()) {
4110 m->clear_native_function();
4111 m->set_signature_handler(NULL);
4112 }
4113 }
4114 }
4115 #ifndef USDT2
4116 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4117 #else /* USDT2 */
4118 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4119 0);
4120 #endif /* USDT2 */
4121 return 0;
4122 JNI_END
4123
4124 //
4125 // Monitor functions
4126 //
4127
4128 #ifndef USDT2
4129 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4130 #else /* USDT2 */
4131 DT_RETURN_MARK_DECL(MonitorEnter, jint
4132 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4133 #endif /* USDT2 */
4134
4135 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4136 #ifndef USDT2
4137 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4138 #else /* USDT2 */
4139 HOTSPOT_JNI_MONITORENTER_ENTRY(
4140 env, jobj);
4141 #endif /* USDT2 */
4142 jint ret = JNI_ERR;
4143 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4144
4145 // If the object is null, we can't do anything with it
4146 if (jobj == NULL) {
4147 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4148 }
4149
4150 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4151 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4152 ret = JNI_OK;
4153 return ret;
4154 JNI_END
4155
4156 #ifndef USDT2
4157 DT_RETURN_MARK_DECL(MonitorExit, jint);
4158 #else /* USDT2 */
4159 DT_RETURN_MARK_DECL(MonitorExit, jint
4160 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4161 #endif /* USDT2 */
4162
4163 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4164 #ifndef USDT2
4165 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4166 #else /* USDT2 */
4167 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4168 env, jobj);
4169 #endif /* USDT2 */
4170 jint ret = JNI_ERR;
4171 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4172
4173 // Don't do anything with a null object
4174 if (jobj == NULL) {
4175 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4176 }
4177
4178 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4179 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4180
4181 ret = JNI_OK;
4182 return ret;
4183 JNI_END
4184
4185 //
4186 // Extensions
4187 //
4188
4189 #ifndef USDT2
4190 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4191 #else /* USDT2 */
4192 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4193 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4194 #endif /* USDT2 */
4195
4196 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4197 JNIWrapper("GetStringRegion");
4198 #ifndef USDT2
4199 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4200 #else /* USDT2 */
4201 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4202 env, string, start, len, buf);
4203 #endif /* USDT2 */
4204 DT_VOID_RETURN_MARK(GetStringRegion);
4205 oop s = JNIHandles::resolve_non_null(string);
4206 int s_len = java_lang_String::length(s);
4207 if (start < 0 || len < 0 || start > s_len - len) {
4208 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4209 } else {
4210 if (len > 0) {
4211 int s_offset = java_lang_String::offset(s);
4212 typeArrayOop s_value = java_lang_String::value(s);
4213 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4214 }
4215 }
4216 JNI_END
4217
4218 #ifndef USDT2
4219 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4220 #else /* USDT2 */
4221 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4222 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4223 #endif /* USDT2 */
4224
4225 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4226 JNIWrapper("GetStringUTFRegion");
4227 #ifndef USDT2
4228 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4229 #else /* USDT2 */
4230 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4231 env, string, start, len, buf);
4232 #endif /* USDT2 */
4233 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4234 oop s = JNIHandles::resolve_non_null(string);
4235 int s_len = java_lang_String::length(s);
4236 if (start < 0 || len < 0 || start > s_len - len) {
4237 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4238 } else {
4239 //%note jni_7
4240 if (len > 0) {
4241 ResourceMark rm(THREAD);
4242 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4243 int utf_len = (int)strlen(utf_region);
4244 memcpy(buf, utf_region, utf_len);
4245 buf[utf_len] = 0;
4246 } else {
4247 // JDK null-terminates the buffer even in len is zero
4248 if (buf != NULL) {
4249 buf[0] = 0;
4250 }
4251 }
4252 }
4253 JNI_END
4254
4255 static oop lock_gc_or_pin_object(JavaThread* thread, jobject obj) {
4256 if (Universe::heap()->supports_object_pinning()) {
4257 const oop o = JNIHandles::resolve_non_null(obj);
4258 return Universe::heap()->pin_object(thread, o);
4259 } else {
4260 GC_locker::lock_critical(thread);
4261 return JNIHandles::resolve_non_null(obj);
4262 }
4263 }
4264
4265 static void unlock_gc_or_unpin_object(JavaThread* thread, jobject obj) {
4266 if (Universe::heap()->supports_object_pinning()) {
4267 const oop o = JNIHandles::resolve_non_null(obj);
4268 return Universe::heap()->unpin_object(thread, o);
4269 } else {
4270 GC_locker::unlock_critical(thread);
4271 }
4272 }
4273
4274 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4275 JNIWrapper("GetPrimitiveArrayCritical");
4276 #ifndef USDT2
4277 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4278 #else /* USDT2 */
4279 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4280 env, array, (uintptr_t *) isCopy);
4281 #endif /* USDT2 */
4282 if (isCopy != NULL) {
4283 *isCopy = JNI_FALSE;
4284 }
4285 oop a = lock_gc_or_pin_object(thread, array);
4286 assert(a->is_array(), "just checking");
4287 BasicType type;
4288 if (a->is_objArray()) {
4289 type = T_OBJECT;
4290 } else {
4291 type = TypeArrayKlass::cast(a->klass())->element_type();
4292 }
4293 void* ret = arrayOop(a)->base(type);
4294 #ifndef USDT2
4295 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4296 #else /* USDT2 */
4297 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4298 ret);
4299 #endif /* USDT2 */
4300 return ret;
4301 JNI_END
4302
4303
4304 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4305 JNIWrapper("ReleasePrimitiveArrayCritical");
4306 #ifndef USDT2
4307 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4308 #else /* USDT2 */
4309 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4310 env, array, carray, mode);
4311 #endif /* USDT2 */
4312 // The array, carray and mode arguments are ignored
4313 unlock_gc_or_unpin_object(thread, array);
4314 #ifndef USDT2
4315 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4316 #else /* USDT2 */
4317 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4318 );
4319 #endif /* USDT2 */
4320 JNI_END
4321
4322
4323 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4324 JNIWrapper("GetStringCritical");
4325 #ifndef USDT2
4326 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4327 #else /* USDT2 */
4328 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4329 env, string, (uintptr_t *) isCopy);
4330 #endif /* USDT2 */
4331 jchar* ret;
4332 if (!UseShenandoahGC) {
4333 GC_locker::lock_critical(thread);
4334 if (isCopy != NULL) {
4335 *isCopy = JNI_FALSE;
4336 }
4337 oop s = JNIHandles::resolve_non_null(string);
4338 int s_len = java_lang_String::length(s);
4339 typeArrayOop s_value = java_lang_String::value(s);
4340 int s_offset = java_lang_String::offset(s);
4341 if (s_len > 0) {
4342 ret = s_value->char_at_addr(s_offset);
4343 } else {
4344 ret = (jchar*) s_value->base(T_CHAR);
4345 }
4346 }
4347 #if INCLUDE_ALL_GCS
4348 else {
4349 assert(UseShenandoahGC, "This path should only be taken with Shenandoah");
4350 oop s = JNIHandles::resolve_non_null(string);
4351 if (ShenandoahStringDedup::is_enabled()) {
4352 typeArrayOop s_value = java_lang_String::value(s);
4353 int s_len = java_lang_String::length(s);
4354 ret = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
4355 /* JNI Specification states return NULL on OOM */
4356 if (ret != NULL) {
4357 memcpy(ret, s_value->char_at_addr(0), s_len * sizeof(jchar));
4358 ret[s_len] = 0;
4359 }
4360 if (isCopy != NULL) *isCopy = JNI_TRUE;
4361 } else {
4362 typeArrayOop s_value = java_lang_String::value(s);
4363 s_value = (typeArrayOop) Universe::heap()->pin_object(thread, s_value);
4364 ret = (jchar *) s_value->base(T_CHAR);
4365 if (isCopy != NULL) *isCopy = JNI_FALSE;
4366 }
4367 }
4368 #else
4369 else {
4370 ShouldNotReachHere();
4371 }
4372 #endif
4373 #ifndef USDT2
4374 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4375 #else /* USDT2 */
4376 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4377 (uint16_t *) ret);
4378 #endif /* USDT2 */
4379 return ret;
4380 JNI_END
4381
4382
4383 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4384 JNIWrapper("ReleaseStringCritical");
4385 #ifndef USDT2
4386 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4387 #else /* USDT2 */
4388 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4389 env, str, (uint16_t *) chars);
4390 #endif /* USDT2 */
4391 if (!UseShenandoahGC) {
4392 // The str and chars arguments are ignored
4393 GC_locker::unlock_critical(thread);
4394 }
4395 #if INCLUDE_ALL_GCS
4396 else if (ShenandoahStringDedup::is_enabled()) {
4397 assert(UseShenandoahGC, "This path should only be taken with Shenandoah");
4398 // For copied string value, free jchar array allocated by earlier call to GetStringCritical.
4399 // This assumes that ReleaseStringCritical bookends GetStringCritical.
4400 FREE_C_HEAP_ARRAY(jchar, chars, mtInternal);
4401 } else {
4402 assert(UseShenandoahGC, "This path should only be taken with Shenandoah");
4403 oop s = JNIHandles::resolve_non_null(str);
4404 // For not copied string value, drop the associated gc-locker/pin.
4405 typeArrayOop s_value = java_lang_String::value(s);
4406 Universe::heap()->unpin_object(thread, s_value);
4407 }
4408 #else
4409 else {
4410 ShouldNotReachHere();
4411 }
4412 #endif
4413 #ifndef USDT2
4414 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4415 #else /* USDT2 */
4416 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4417 );
4418 #endif /* USDT2 */
4419 JNI_END
4420
4421
4422 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4423 JNIWrapper("jni_NewWeakGlobalRef");
4424 #ifndef USDT2
4425 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4426 #else /* USDT2 */
4427 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4428 env, ref);
4429 #endif /* USDT2 */
4430 Handle ref_handle(thread, JNIHandles::resolve(ref));
4431 jweak ret = JNIHandles::make_weak_global(ref_handle);
4432 #ifndef USDT2
4433 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4434 #else /* USDT2 */
4435 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4436 ret);
4437 #endif /* USDT2 */
4438 return ret;
4439 JNI_END
4440
4441 // Must be JNI_ENTRY (with HandleMark)
4442 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4443 JNIWrapper("jni_DeleteWeakGlobalRef");
4444 #ifndef USDT2
4445 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4446 #else /* USDT2 */
4447 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4448 env, ref);
4449 #endif /* USDT2 */
4450 JNIHandles::destroy_weak_global(ref);
4451 #ifndef USDT2
4452 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4453 #else /* USDT2 */
4454 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4455 );
4456 #endif /* USDT2 */
4457 JNI_END
4458
4459
4460 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4461 JNIWrapper("jni_ExceptionCheck");
4462 #ifndef USDT2
4463 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4464 #else /* USDT2 */
4465 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4466 env);
4467 #endif /* USDT2 */
4468 jni_check_async_exceptions(thread);
4469 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4470 #ifndef USDT2
4471 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4472 #else /* USDT2 */
4473 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4474 ret);
4475 #endif /* USDT2 */
4476 return ret;
4477 JNI_END
4478
4479
4480 // Initialization state for three routines below relating to
4481 // java.nio.DirectBuffers
4482 static jint directBufferSupportInitializeStarted = 0;
4483 static volatile jint directBufferSupportInitializeEnded = 0;
4484 static volatile jint directBufferSupportInitializeFailed = 0;
4485 static jclass bufferClass = NULL;
4486 static jclass directBufferClass = NULL;
4487 static jclass directByteBufferClass = NULL;
4488 static jmethodID directByteBufferConstructor = NULL;
4489 static jfieldID directBufferAddressField = NULL;
4490 static jfieldID bufferCapacityField = NULL;
4491
4492 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4493 Handle loader; // null (bootstrap) loader
4494 Handle protection_domain; // null protection domain
4495
4496 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4497 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4498
4499 if (TraceClassResolution && result != NULL) {
4500 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4501 }
4502 return result;
4503 }
4504
4505 // These lookups are done with the NULL (bootstrap) ClassLoader to
4506 // circumvent any security checks that would be done by jni_FindClass.
4507 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4508 {
4509 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4510 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4511 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4512 return true;
4513 }
4514 JNI_END
4515
4516
4517 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4518 if (directBufferSupportInitializeFailed) {
4519 return false;
4520 }
4521
4522 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4523 if (!lookupDirectBufferClasses(env)) {
4524 directBufferSupportInitializeFailed = 1;
4525 return false;
4526 }
4527
4528 // Make global references for these
4529 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4530 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4531 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4532
4533 // Get needed field and method IDs
4534 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4535 if (env->ExceptionCheck()) {
4536 env->ExceptionClear();
4537 directBufferSupportInitializeFailed = 1;
4538 return false;
4539 }
4540 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4541 if (env->ExceptionCheck()) {
4542 env->ExceptionClear();
4543 directBufferSupportInitializeFailed = 1;
4544 return false;
4545 }
4546 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4547 if (env->ExceptionCheck()) {
4548 env->ExceptionClear();
4549 directBufferSupportInitializeFailed = 1;
4550 return false;
4551 }
4552
4553 if ((directByteBufferConstructor == NULL) ||
4554 (directBufferAddressField == NULL) ||
4555 (bufferCapacityField == NULL)) {
4556 directBufferSupportInitializeFailed = 1;
4557 return false;
4558 }
4559
4560 directBufferSupportInitializeEnded = 1;
4561 } else {
4562 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4563 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4564 // os::sleep which requires the VM state transition. On other platforms, it
4565 // is not necessary. The following call to change the VM state is purposely
4566 // put inside the loop to avoid potential deadlock when multiple threads
4567 // try to call this method. See 6791815 for more details.
4568 ThreadInVMfromNative tivn(thread);
4569 os::yield_all();
4570 }
4571 }
4572
4573 return !directBufferSupportInitializeFailed;
4574 }
4575
4576 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4577 {
4578 // thread_from_jni_environment() will block if VM is gone.
4579 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4580
4581 JNIWrapper("jni_NewDirectByteBuffer");
4582 #ifndef USDT2
4583 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4584 #else /* USDT2 */
4585 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4586 env, address, capacity);
4587 #endif /* USDT2 */
4588
4589 if (!directBufferSupportInitializeEnded) {
4590 if (!initializeDirectBufferSupport(env, thread)) {
4591 #ifndef USDT2
4592 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4593 #else /* USDT2 */
4594 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4595 NULL);
4596 #endif /* USDT2 */
4597 return NULL;
4598 }
4599 }
4600
4601 // Being paranoid about accidental sign extension on address
4602 jlong addr = (jlong) ((uintptr_t) address);
4603 // NOTE that package-private DirectByteBuffer constructor currently
4604 // takes int capacity
4605 jint cap = (jint) capacity;
4606 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4607 #ifndef USDT2
4608 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4609 #else /* USDT2 */
4610 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4611 ret);
4612 #endif /* USDT2 */
4613 return ret;
4614 }
4615
4616 #ifndef USDT2
4617 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4618 #else /* USDT2 */
4619 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4620 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4621 #endif /* USDT2 */
4622
4623 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4624 {
4625 // thread_from_jni_environment() will block if VM is gone.
4626 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4627
4628 JNIWrapper("jni_GetDirectBufferAddress");
4629 #ifndef USDT2
4630 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4631 #else /* USDT2 */
4632 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4633 env, buf);
4634 #endif /* USDT2 */
4635 void* ret = NULL;
4636 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4637
4638 if (!directBufferSupportInitializeEnded) {
4639 if (!initializeDirectBufferSupport(env, thread)) {
4640 return 0;
4641 }
4642 }
4643
4644 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4645 return 0;
4646 }
4647
4648 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4649 return ret;
4650 }
4651
4652 #ifndef USDT2
4653 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4654 #else /* USDT2 */
4655 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4656 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4657 #endif /* USDT2 */
4658
4659 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4660 {
4661 // thread_from_jni_environment() will block if VM is gone.
4662 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4663
4664 JNIWrapper("jni_GetDirectBufferCapacity");
4665 #ifndef USDT2
4666 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4667 #else /* USDT2 */
4668 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4669 env, buf);
4670 #endif /* USDT2 */
4671 jlong ret = -1;
4672 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4673
4674 if (!directBufferSupportInitializeEnded) {
4675 if (!initializeDirectBufferSupport(env, thread)) {
4676 ret = 0;
4677 return ret;
4678 }
4679 }
4680
4681 if (buf == NULL) {
4682 return -1;
4683 }
4684
4685 if (!env->IsInstanceOf(buf, directBufferClass)) {
4686 return -1;
4687 }
4688
4689 // NOTE that capacity is currently an int in the implementation
4690 ret = env->GetIntField(buf, bufferCapacityField);
4691 return ret;
4692 }
4693
4694
4695 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4696 JNIWrapper("GetVersion");
4697 #ifndef USDT2
4698 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4699 #else /* USDT2 */
4700 HOTSPOT_JNI_GETVERSION_ENTRY(
4701 env);
4702 #endif /* USDT2 */
4703 #ifndef USDT2
4704 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4705 #else /* USDT2 */
4706 HOTSPOT_JNI_GETVERSION_RETURN(
4707 CurrentVersion);
4708 #endif /* USDT2 */
4709 return CurrentVersion;
4710 JNI_END
4711
4712 extern struct JavaVM_ main_vm;
4713
4714 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4715 JNIWrapper("jni_GetJavaVM");
4716 #ifndef USDT2
4717 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4718 #else /* USDT2 */
4719 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4720 env, (void **) vm);
4721 #endif /* USDT2 */
4722 *vm = (JavaVM *)(&main_vm);
4723 #ifndef USDT2
4724 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4725 #else /* USDT2 */
4726 HOTSPOT_JNI_GETJAVAVM_RETURN(
4727 JNI_OK);
4728 #endif /* USDT2 */
4729 return JNI_OK;
4730 JNI_END
4731
4732 // Structure containing all jni functions
4733 struct JNINativeInterface_ jni_NativeInterface = {
4734 NULL,
4735 NULL,
4736 NULL,
4737
4738 NULL,
4739
4740 jni_GetVersion,
4741
4742 jni_DefineClass,
4743 jni_FindClass,
4744
4745 jni_FromReflectedMethod,
4746 jni_FromReflectedField,
4747
4748 jni_ToReflectedMethod,
4749
4750 jni_GetSuperclass,
4751 jni_IsAssignableFrom,
4752
4753 jni_ToReflectedField,
4754
4755 jni_Throw,
4756 jni_ThrowNew,
4757 jni_ExceptionOccurred,
4758 jni_ExceptionDescribe,
4759 jni_ExceptionClear,
4760 jni_FatalError,
4761
4762 jni_PushLocalFrame,
4763 jni_PopLocalFrame,
4764
4765 jni_NewGlobalRef,
4766 jni_DeleteGlobalRef,
4767 jni_DeleteLocalRef,
4768 jni_IsSameObject,
4769
4770 jni_NewLocalRef,
4771 jni_EnsureLocalCapacity,
4772
4773 jni_AllocObject,
4774 jni_NewObject,
4775 jni_NewObjectV,
4776 jni_NewObjectA,
4777
4778 jni_GetObjectClass,
4779 jni_IsInstanceOf,
4780
4781 jni_GetMethodID,
4782
4783 jni_CallObjectMethod,
4784 jni_CallObjectMethodV,
4785 jni_CallObjectMethodA,
4786 jni_CallBooleanMethod,
4787 jni_CallBooleanMethodV,
4788 jni_CallBooleanMethodA,
4789 jni_CallByteMethod,
4790 jni_CallByteMethodV,
4791 jni_CallByteMethodA,
4792 jni_CallCharMethod,
4793 jni_CallCharMethodV,
4794 jni_CallCharMethodA,
4795 jni_CallShortMethod,
4796 jni_CallShortMethodV,
4797 jni_CallShortMethodA,
4798 jni_CallIntMethod,
4799 jni_CallIntMethodV,
4800 jni_CallIntMethodA,
4801 jni_CallLongMethod,
4802 jni_CallLongMethodV,
4803 jni_CallLongMethodA,
4804 jni_CallFloatMethod,
4805 jni_CallFloatMethodV,
4806 jni_CallFloatMethodA,
4807 jni_CallDoubleMethod,
4808 jni_CallDoubleMethodV,
4809 jni_CallDoubleMethodA,
4810 jni_CallVoidMethod,
4811 jni_CallVoidMethodV,
4812 jni_CallVoidMethodA,
4813
4814 jni_CallNonvirtualObjectMethod,
4815 jni_CallNonvirtualObjectMethodV,
4816 jni_CallNonvirtualObjectMethodA,
4817 jni_CallNonvirtualBooleanMethod,
4818 jni_CallNonvirtualBooleanMethodV,
4819 jni_CallNonvirtualBooleanMethodA,
4820 jni_CallNonvirtualByteMethod,
4821 jni_CallNonvirtualByteMethodV,
4822 jni_CallNonvirtualByteMethodA,
4823 jni_CallNonvirtualCharMethod,
4824 jni_CallNonvirtualCharMethodV,
4825 jni_CallNonvirtualCharMethodA,
4826 jni_CallNonvirtualShortMethod,
4827 jni_CallNonvirtualShortMethodV,
4828 jni_CallNonvirtualShortMethodA,
4829 jni_CallNonvirtualIntMethod,
4830 jni_CallNonvirtualIntMethodV,
4831 jni_CallNonvirtualIntMethodA,
4832 jni_CallNonvirtualLongMethod,
4833 jni_CallNonvirtualLongMethodV,
4834 jni_CallNonvirtualLongMethodA,
4835 jni_CallNonvirtualFloatMethod,
4836 jni_CallNonvirtualFloatMethodV,
4837 jni_CallNonvirtualFloatMethodA,
4838 jni_CallNonvirtualDoubleMethod,
4839 jni_CallNonvirtualDoubleMethodV,
4840 jni_CallNonvirtualDoubleMethodA,
4841 jni_CallNonvirtualVoidMethod,
4842 jni_CallNonvirtualVoidMethodV,
4843 jni_CallNonvirtualVoidMethodA,
4844
4845 jni_GetFieldID,
4846
4847 jni_GetObjectField,
4848 jni_GetBooleanField,
4849 jni_GetByteField,
4850 jni_GetCharField,
4851 jni_GetShortField,
4852 jni_GetIntField,
4853 jni_GetLongField,
4854 jni_GetFloatField,
4855 jni_GetDoubleField,
4856
4857 jni_SetObjectField,
4858 jni_SetBooleanField,
4859 jni_SetByteField,
4860 jni_SetCharField,
4861 jni_SetShortField,
4862 jni_SetIntField,
4863 jni_SetLongField,
4864 jni_SetFloatField,
4865 jni_SetDoubleField,
4866
4867 jni_GetStaticMethodID,
4868
4869 jni_CallStaticObjectMethod,
4870 jni_CallStaticObjectMethodV,
4871 jni_CallStaticObjectMethodA,
4872 jni_CallStaticBooleanMethod,
4873 jni_CallStaticBooleanMethodV,
4874 jni_CallStaticBooleanMethodA,
4875 jni_CallStaticByteMethod,
4876 jni_CallStaticByteMethodV,
4877 jni_CallStaticByteMethodA,
4878 jni_CallStaticCharMethod,
4879 jni_CallStaticCharMethodV,
4880 jni_CallStaticCharMethodA,
4881 jni_CallStaticShortMethod,
4882 jni_CallStaticShortMethodV,
4883 jni_CallStaticShortMethodA,
4884 jni_CallStaticIntMethod,
4885 jni_CallStaticIntMethodV,
4886 jni_CallStaticIntMethodA,
4887 jni_CallStaticLongMethod,
4888 jni_CallStaticLongMethodV,
4889 jni_CallStaticLongMethodA,
4890 jni_CallStaticFloatMethod,
4891 jni_CallStaticFloatMethodV,
4892 jni_CallStaticFloatMethodA,
4893 jni_CallStaticDoubleMethod,
4894 jni_CallStaticDoubleMethodV,
4895 jni_CallStaticDoubleMethodA,
4896 jni_CallStaticVoidMethod,
4897 jni_CallStaticVoidMethodV,
4898 jni_CallStaticVoidMethodA,
4899
4900 jni_GetStaticFieldID,
4901
4902 jni_GetStaticObjectField,
4903 jni_GetStaticBooleanField,
4904 jni_GetStaticByteField,
4905 jni_GetStaticCharField,
4906 jni_GetStaticShortField,
4907 jni_GetStaticIntField,
4908 jni_GetStaticLongField,
4909 jni_GetStaticFloatField,
4910 jni_GetStaticDoubleField,
4911
4912 jni_SetStaticObjectField,
4913 jni_SetStaticBooleanField,
4914 jni_SetStaticByteField,
4915 jni_SetStaticCharField,
4916 jni_SetStaticShortField,
4917 jni_SetStaticIntField,
4918 jni_SetStaticLongField,
4919 jni_SetStaticFloatField,
4920 jni_SetStaticDoubleField,
4921
4922 jni_NewString,
4923 jni_GetStringLength,
4924 jni_GetStringChars,
4925 jni_ReleaseStringChars,
4926
4927 jni_NewStringUTF,
4928 jni_GetStringUTFLength,
4929 jni_GetStringUTFChars,
4930 jni_ReleaseStringUTFChars,
4931
4932 jni_GetArrayLength,
4933
4934 jni_NewObjectArray,
4935 jni_GetObjectArrayElement,
4936 jni_SetObjectArrayElement,
4937
4938 jni_NewBooleanArray,
4939 jni_NewByteArray,
4940 jni_NewCharArray,
4941 jni_NewShortArray,
4942 jni_NewIntArray,
4943 jni_NewLongArray,
4944 jni_NewFloatArray,
4945 jni_NewDoubleArray,
4946
4947 jni_GetBooleanArrayElements,
4948 jni_GetByteArrayElements,
4949 jni_GetCharArrayElements,
4950 jni_GetShortArrayElements,
4951 jni_GetIntArrayElements,
4952 jni_GetLongArrayElements,
4953 jni_GetFloatArrayElements,
4954 jni_GetDoubleArrayElements,
4955
4956 jni_ReleaseBooleanArrayElements,
4957 jni_ReleaseByteArrayElements,
4958 jni_ReleaseCharArrayElements,
4959 jni_ReleaseShortArrayElements,
4960 jni_ReleaseIntArrayElements,
4961 jni_ReleaseLongArrayElements,
4962 jni_ReleaseFloatArrayElements,
4963 jni_ReleaseDoubleArrayElements,
4964
4965 jni_GetBooleanArrayRegion,
4966 jni_GetByteArrayRegion,
4967 jni_GetCharArrayRegion,
4968 jni_GetShortArrayRegion,
4969 jni_GetIntArrayRegion,
4970 jni_GetLongArrayRegion,
4971 jni_GetFloatArrayRegion,
4972 jni_GetDoubleArrayRegion,
4973
4974 jni_SetBooleanArrayRegion,
4975 jni_SetByteArrayRegion,
4976 jni_SetCharArrayRegion,
4977 jni_SetShortArrayRegion,
4978 jni_SetIntArrayRegion,
4979 jni_SetLongArrayRegion,
4980 jni_SetFloatArrayRegion,
4981 jni_SetDoubleArrayRegion,
4982
4983 jni_RegisterNatives,
4984 jni_UnregisterNatives,
4985
4986 jni_MonitorEnter,
4987 jni_MonitorExit,
4988
4989 jni_GetJavaVM,
4990
4991 jni_GetStringRegion,
4992 jni_GetStringUTFRegion,
4993
4994 jni_GetPrimitiveArrayCritical,
4995 jni_ReleasePrimitiveArrayCritical,
4996
4997 jni_GetStringCritical,
4998 jni_ReleaseStringCritical,
4999
5000 jni_NewWeakGlobalRef,
5001 jni_DeleteWeakGlobalRef,
5002
5003 jni_ExceptionCheck,
5004
5005 jni_NewDirectByteBuffer,
5006 jni_GetDirectBufferAddress,
5007 jni_GetDirectBufferCapacity,
5008
5009 // New 1_6 features
5010
5011 jni_GetObjectRefType
5012 };
5013
5014
5015 // For jvmti use to modify jni function table.
5016 // Java threads in native contiues to run until it is transitioned
5017 // to VM at safepoint. Before the transition or before it is blocked
5018 // for safepoint it may access jni function table. VM could crash if
5019 // any java thread access the jni function table in the middle of memcpy.
5020 // To avoid this each function pointers are copied automically.
5021 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
5022 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
5023 intptr_t *a = (intptr_t *) jni_functions();
5024 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
5025 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
5026 Atomic::store_ptr(*b++, a++);
5027 }
5028 }
5029
5030 void quicken_jni_functions() {
5031 // Replace Get<Primitive>Field with fast versions
5032 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
5033 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
5034 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
5035 // windows x86 currently needs SEH wrapper and the gain of the fast
5036 // versions currently isn't certain for server vm on uniprocessor.
5037 && os::is_MP()
5038 #endif
5039 ) {
5040 address func;
5041 func = JNI_FastGetField::generate_fast_get_boolean_field();
5042 if (func != (address)-1) {
5043 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
5044 }
5045 func = JNI_FastGetField::generate_fast_get_byte_field();
5046 if (func != (address)-1) {
5047 jni_NativeInterface.GetByteField = (GetByteField_t)func;
5048 }
5049 func = JNI_FastGetField::generate_fast_get_char_field();
5050 if (func != (address)-1) {
5051 jni_NativeInterface.GetCharField = (GetCharField_t)func;
5052 }
5053 func = JNI_FastGetField::generate_fast_get_short_field();
5054 if (func != (address)-1) {
5055 jni_NativeInterface.GetShortField = (GetShortField_t)func;
5056 }
5057 func = JNI_FastGetField::generate_fast_get_int_field();
5058 if (func != (address)-1) {
5059 jni_NativeInterface.GetIntField = (GetIntField_t)func;
5060 }
5061 func = JNI_FastGetField::generate_fast_get_long_field();
5062 if (func != (address)-1) {
5063 jni_NativeInterface.GetLongField = (GetLongField_t)func;
5064 }
5065 func = JNI_FastGetField::generate_fast_get_float_field();
5066 if (func != (address)-1) {
5067 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
5068 }
5069 func = JNI_FastGetField::generate_fast_get_double_field();
5070 if (func != (address)-1) {
5071 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
5072 }
5073 }
5074 }
5075
5076 // Returns the function structure
5077 struct JNINativeInterface_* jni_functions() {
5078 #if INCLUDE_JNI_CHECK
5079 if (CheckJNICalls) return jni_functions_check();
5080 #endif // INCLUDE_JNI_CHECK
5081 return &jni_NativeInterface;
5082 }
5083
5084 // Returns the function structure
5085 struct JNINativeInterface_* jni_functions_nocheck() {
5086 return &jni_NativeInterface;
5087 }
5088
5089 static void post_thread_start_event(const JavaThread* jt) {
5090 assert(jt != NULL, "invariant");
5091 EventThreadStart event;
5092 if (event.should_commit()) {
5093 event.set_thread(JFR_THREAD_ID(jt));
5094 event.set_parentThread((traceid)0);
5095 #if INCLUDE_JFR
5096 if (EventThreadStart::is_stacktrace_enabled()) {
5097 jt->jfr_thread_local()->set_cached_stack_trace_id((traceid)0);
5098 event.commit();
5099 jt->jfr_thread_local()->clear_cached_stack_trace();
5100 } else
5101 #endif
5102 {
5103 event.commit();
5104 }
5105 }
5106 }
5107
5108 // Invocation API
5109
5110
5111 // Forward declaration
5112 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
5113
5114 // Global invocation API vars
5115 volatile jint vm_created = 0;
5116 // Indicate whether it is safe to recreate VM
5117 volatile jint safe_to_recreate_vm = 1;
5118 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5119
5120
5121 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5122 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5123
5124 #ifndef USDT2
5125 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5126 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5127 #else /* USDT2 */
5128 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5129 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5130 #endif /* USDT2 */
5131
5132 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5133 #ifndef USDT2
5134 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5135 #else /* USDT2 */
5136 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5137 args_);
5138 #endif /* USDT2 */
5139 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5140 jint ret = JNI_ERR;
5141 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5142
5143 if (Threads::is_supported_jni_version(args->version)) {
5144 ret = JNI_OK;
5145 }
5146 // 1.1 style no longer supported in hotspot.
5147 // According the JNI spec, we should update args->version on return.
5148 // We also use the structure to communicate with launcher about default
5149 // stack size.
5150 if (args->version == JNI_VERSION_1_1) {
5151 args->version = JNI_VERSION_1_2;
5152 // javaStackSize is int in arguments structure
5153 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5154 args->javaStackSize = (jint)(ThreadStackSize * K);
5155 }
5156 return ret;
5157 }
5158
5159 #ifndef PRODUCT
5160
5161 #include "gc_implementation/shared/gcTimer.hpp"
5162 #include "gc_interface/collectedHeap.hpp"
5163 #if INCLUDE_ALL_GCS
5164 #include "gc_implementation/g1/heapRegionRemSet.hpp"
5165 #endif
5166 #include "memory/guardedMemory.hpp"
5167 #include "utilities/quickSort.hpp"
5168 #include "utilities/ostream.hpp"
5169 #if INCLUDE_VM_STRUCTS
5170 #include "runtime/vmStructs.hpp"
5171 #endif
5172
5173 #define run_unit_test(unit_test_function_call) \
5174 tty->print_cr("Running test: " #unit_test_function_call); \
5175 unit_test_function_call
5176
5177 // Forward declaration
5178 void TestOS_test();
5179 void TestReservedSpace_test();
5180 void TestReserveMemorySpecial_test();
5181 void TestVirtualSpace_test();
5182 void TestMetaspaceAux_test();
5183 void SpaceManager_test_adjust_initial_chunk_size();
5184 void TestMetachunk_test();
5185 void TestVirtualSpaceNode_test();
5186 void TestNewSize_test();
5187 void TestKlass_test();
5188 void Test_linked_list();
5189 void TestResourcehash_test();
5190 void TestChunkedList_test();
5191 #if INCLUDE_ALL_GCS
5192 void TestOldFreeSpaceCalculation_test();
5193 void TestG1BiasedArray_test();
5194 void TestBufferingOopClosure_test();
5195 void TestCodeCacheRemSet_test();
5196 void FreeRegionList_test();
5197 void ChunkManager_test_list_index();
5198 #endif
5199
5200 void execute_internal_vm_tests() {
5201 if (ExecuteInternalVMTests) {
5202 tty->print_cr("Running internal VM tests");
5203 run_unit_test(TestOS_test());
5204 run_unit_test(TestReservedSpace_test());
5205 run_unit_test(TestReserveMemorySpecial_test());
5206 run_unit_test(TestVirtualSpace_test());
5207 run_unit_test(TestMetaspaceAux_test());
5208 run_unit_test(TestMetachunk_test());
5209 run_unit_test(TestVirtualSpaceNode_test());
5210 run_unit_test(GlobalDefinitions::test_globals());
5211 run_unit_test(GlobalDefinitions::test_proper_unit());
5212 run_unit_test(GCTimerAllTest::all());
5213 run_unit_test(arrayOopDesc::test_max_array_length());
5214 run_unit_test(CollectedHeap::test_is_in());
5215 run_unit_test(QuickSort::test_quick_sort());
5216 run_unit_test(GuardedMemory::test_guarded_memory());
5217 run_unit_test(AltHashing::test_alt_hash());
5218 run_unit_test(test_loggc_filename());
5219 run_unit_test(test_snprintf());
5220 run_unit_test(TestNewSize_test());
5221 run_unit_test(TestKlass_test());
5222 run_unit_test(TestResourcehash_test());
5223 run_unit_test(Test_linked_list());
5224 run_unit_test(TestChunkedList_test());
5225 run_unit_test(ObjectMonitor::sanity_checks());
5226 #if INCLUDE_VM_STRUCTS
5227 run_unit_test(VMStructs::test());
5228 #endif
5229 #if INCLUDE_ALL_GCS
5230 run_unit_test(TestOldFreeSpaceCalculation_test());
5231 run_unit_test(TestG1BiasedArray_test());
5232 run_unit_test(HeapRegionRemSet::test_prt());
5233 run_unit_test(SpaceManager_test_adjust_initial_chunk_size());
5234 run_unit_test(ChunkManager_test_list_index());
5235 run_unit_test(TestBufferingOopClosure_test());
5236 run_unit_test(TestCodeCacheRemSet_test());
5237 if (UseG1GC) {
5238 run_unit_test(FreeRegionList_test());
5239 }
5240 #endif
5241 tty->print_cr("All internal VM tests passed");
5242 }
5243 }
5244
5245 #undef run_unit_test
5246
5247 #endif
5248
5249 #ifndef USDT2
5250 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5251 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5252 #else /* USDT2 */
5253 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5254 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5255 #endif /* USDT2 */
5256
5257 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5258 #ifndef USDT2
5259 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5260 #else /* USDT2 */
5261 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5262 (void **) vm, penv, args);
5263 #endif /* USDT2 */
5264
5265 jint result = JNI_ERR;
5266 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5267
5268 // We're about to use Atomic::xchg for synchronization. Some Zero
5269 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5270 // but __sync_lock_test_and_set is not guaranteed to do what we want
5271 // on all architectures. So we check it works before relying on it.
5272 #if defined(ZERO) && defined(ASSERT)
5273 {
5274 jint a = 0xcafebabe;
5275 jint b = Atomic::xchg(0xdeadbeef, &a);
5276 void *c = &a;
5277 void *d = Atomic::xchg_ptr(&b, &c);
5278 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5279 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5280 }
5281 #endif // ZERO && ASSERT
5282
5283 // At the moment it's only possible to have one Java VM,
5284 // since some of the runtime state is in global variables.
5285
5286 // We cannot use our mutex locks here, since they only work on
5287 // Threads. We do an atomic compare and exchange to ensure only
5288 // one thread can call this method at a time
5289
5290 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5291 // the add/dec implementations are dependent on whether we are running
5292 // on a multiprocessor, and at this stage of initialization the os::is_MP
5293 // function used to determine this will always return false. Atomic::xchg
5294 // does not have this problem.
5295 if (Atomic::xchg(1, &vm_created) == 1) {
5296 return JNI_EEXIST; // already created, or create attempt in progress
5297 }
5298 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5299 return JNI_ERR; // someone tried and failed and retry not allowed.
5300 }
5301
5302 assert(vm_created == 1, "vm_created is true during the creation");
5303
5304 /**
5305 * Certain errors during initialization are recoverable and do not
5306 * prevent this method from being called again at a later time
5307 * (perhaps with different arguments). However, at a certain
5308 * point during initialization if an error occurs we cannot allow
5309 * this function to be called again (or it will crash). In those
5310 * situations, the 'canTryAgain' flag is set to false, which atomically
5311 * sets safe_to_recreate_vm to 1, such that any new call to
5312 * JNI_CreateJavaVM will immediately fail using the above logic.
5313 */
5314 bool can_try_again = true;
5315
5316 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5317 if (result == JNI_OK) {
5318 JavaThread *thread = JavaThread::current();
5319 /* thread is thread_in_vm here */
5320 *vm = (JavaVM *)(&main_vm);
5321 *(JNIEnv**)penv = thread->jni_environment();
5322
5323 // Tracks the time application was running before GC
5324 RuntimeService::record_application_start();
5325
5326 // Notify JVMTI
5327 if (JvmtiExport::should_post_thread_life()) {
5328 JvmtiExport::post_thread_start(thread);
5329 }
5330
5331 post_thread_start_event(thread);
5332
5333 #ifndef PRODUCT
5334 #ifndef CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED
5335 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5336 #endif
5337
5338 // Check if we should compile all classes on bootclasspath
5339 if (CompileTheWorld) ClassLoader::compile_the_world();
5340 if (ReplayCompiles) ciReplay::replay(thread);
5341
5342 // Some platforms (like Win*) need a wrapper around these test
5343 // functions in order to properly handle error conditions.
5344 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5345 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5346 #endif
5347
5348 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5349 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5350 } else {
5351 if (can_try_again) {
5352 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5353 safe_to_recreate_vm = 1;
5354 }
5355
5356 // Creation failed. We must reset vm_created
5357 *vm = 0;
5358 *(JNIEnv**)penv = 0;
5359 // reset vm_created last to avoid race condition. Use OrderAccess to
5360 // control both compiler and architectural-based reordering.
5361 OrderAccess::release_store(&vm_created, 0);
5362 }
5363
5364 return result;
5365 }
5366
5367 #ifndef USDT2
5368 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5369 JavaVM**, jsize, jsize*);
5370 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5371 #endif /* !USDT2 */
5372
5373 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5374 // See bug 4367188, the wrapper can sometimes cause VM crashes
5375 // JNIWrapper("GetCreatedJavaVMs");
5376 #ifndef USDT2
5377 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5378 vm_buf, bufLen, numVMs);
5379 #else /* USDT2 */
5380 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5381 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5382 #endif /* USDT2 */
5383 if (vm_created) {
5384 if (numVMs != NULL) *numVMs = 1;
5385 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5386 } else {
5387 if (numVMs != NULL) *numVMs = 0;
5388 }
5389 #ifndef USDT2
5390 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5391 #else /* USDT2 */
5392 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5393 JNI_OK);
5394 #endif /* USDT2 */
5395 return JNI_OK;
5396 }
5397
5398 extern "C" {
5399
5400 #ifndef USDT2
5401 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5402 #else /* USDT2 */
5403 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5404 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5405 #endif /* USDT2 */
5406
5407 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5408 #ifndef USDT2
5409 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5410 #else /* USDT2 */
5411 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5412 vm);
5413 #endif /* USDT2 */
5414 jint res = JNI_ERR;
5415 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5416
5417 if (!vm_created) {
5418 res = JNI_ERR;
5419 return res;
5420 }
5421
5422 JNIWrapper("DestroyJavaVM");
5423 JNIEnv *env;
5424 JavaVMAttachArgs destroyargs;
5425 destroyargs.version = CurrentVersion;
5426 destroyargs.name = (char *)"DestroyJavaVM";
5427 destroyargs.group = NULL;
5428 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5429 if (res != JNI_OK) {
5430 return res;
5431 }
5432
5433 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5434 JavaThread* thread = JavaThread::current();
5435 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5436 if (Threads::destroy_vm()) {
5437 // Should not change thread state, VM is gone
5438 vm_created = false;
5439 res = JNI_OK;
5440 return res;
5441 } else {
5442 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5443 res = JNI_ERR;
5444 return res;
5445 }
5446 }
5447
5448
5449 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5450 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5451
5452 // Check below commented out from JDK1.2fcs as well
5453 /*
5454 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5455 return JNI_EVERSION;
5456 }
5457 */
5458
5459 Thread* t = ThreadLocalStorage::get_thread_slow();
5460 if (t != NULL) {
5461 // If the thread has been attached this operation is a no-op
5462 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5463 return JNI_OK;
5464 }
5465
5466 // Create a thread and mark it as attaching so it will be skipped by the
5467 // ThreadsListEnumerator - see CR 6404306
5468 JavaThread* thread = new JavaThread(true);
5469
5470 // Set correct safepoint info. The thread is going to call into Java when
5471 // initializing the Java level thread object. Hence, the correct state must
5472 // be set in order for the Safepoint code to deal with it correctly.
5473 thread->set_thread_state(_thread_in_vm);
5474 // Must do this before initialize_thread_local_storage
5475 thread->record_stack_base_and_size();
5476
5477 thread->initialize_thread_local_storage();
5478
5479 if (!os::create_attached_thread(thread)) {
5480 delete thread;
5481 return JNI_ERR;
5482 }
5483 // Enable stack overflow checks
5484 thread->create_stack_guard_pages();
5485
5486 thread->initialize_tlab();
5487
5488 thread->cache_global_variables();
5489
5490 // Crucial that we do not have a safepoint check for this thread, since it has
5491 // not been added to the Thread list yet.
5492 { Threads_lock->lock_without_safepoint_check();
5493 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5494 // avoid this thread trying to do a GC before it is added to the thread-list
5495 thread->set_active_handles(JNIHandleBlock::allocate_block());
5496 Threads::add(thread, daemon);
5497 Threads_lock->unlock();
5498 }
5499 // Create thread group and name info from attach arguments
5500 oop group = NULL;
5501 char* thread_name = NULL;
5502 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5503 group = JNIHandles::resolve(args->group);
5504 thread_name = args->name; // may be NULL
5505 }
5506 if (group == NULL) group = Universe::main_thread_group();
5507
5508 // Create Java level thread object and attach it to this thread
5509 bool attach_failed = false;
5510 {
5511 EXCEPTION_MARK;
5512 HandleMark hm(THREAD);
5513 Handle thread_group(THREAD, group);
5514 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5515 if (HAS_PENDING_EXCEPTION) {
5516 CLEAR_PENDING_EXCEPTION;
5517 // cleanup outside the handle mark.
5518 attach_failed = true;
5519 }
5520 }
5521
5522 if (attach_failed) {
5523 // Added missing cleanup
5524 thread->cleanup_failed_attach_current_thread();
5525 return JNI_ERR;
5526 }
5527
5528 // mark the thread as no longer attaching
5529 // this uses a fence to push the change through so we don't have
5530 // to regrab the threads_lock
5531 thread->set_done_attaching_via_jni();
5532
5533 // Set java thread status.
5534 java_lang_Thread::set_thread_status(thread->threadObj(),
5535 java_lang_Thread::RUNNABLE);
5536
5537 // Notify the debugger
5538 if (JvmtiExport::should_post_thread_life()) {
5539 JvmtiExport::post_thread_start(thread);
5540 }
5541
5542 post_thread_start_event(thread);
5543
5544 *(JNIEnv**)penv = thread->jni_environment();
5545
5546 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5547 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5548 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5549 // needed.
5550
5551 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5552
5553 // Perform any platform dependent FPU setup
5554 os::setup_fpu();
5555
5556 return JNI_OK;
5557 }
5558
5559
5560 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5561 #ifndef USDT2
5562 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5563 #else /* USDT2 */
5564 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5565 vm, penv, _args);
5566 #endif /* USDT2 */
5567 if (!vm_created) {
5568 #ifndef USDT2
5569 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5570 #else /* USDT2 */
5571 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5572 (uint32_t) JNI_ERR);
5573 #endif /* USDT2 */
5574 return JNI_ERR;
5575 }
5576
5577 JNIWrapper("AttachCurrentThread");
5578 jint ret = attach_current_thread(vm, penv, _args, false);
5579 #ifndef USDT2
5580 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5581 #else /* USDT2 */
5582 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5583 ret);
5584 #endif /* USDT2 */
5585 return ret;
5586 }
5587
5588
5589 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5590 #ifndef USDT2
5591 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5592 #else /* USDT2 */
5593 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5594 vm);
5595 #endif /* USDT2 */
5596 VM_Exit::block_if_vm_exited();
5597
5598 JNIWrapper("DetachCurrentThread");
5599
5600 // If the thread has been deattacted the operations is a no-op
5601 if (ThreadLocalStorage::thread() == NULL) {
5602 #ifndef USDT2
5603 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5604 #else /* USDT2 */
5605 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5606 JNI_OK);
5607 #endif /* USDT2 */
5608 return JNI_OK;
5609 }
5610
5611 JavaThread* thread = JavaThread::current();
5612 if (thread->has_last_Java_frame()) {
5613 #ifndef USDT2
5614 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5615 #else /* USDT2 */
5616 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5617 (uint32_t) JNI_ERR);
5618 #endif /* USDT2 */
5619 // Can't detach a thread that's running java, that can't work.
5620 return JNI_ERR;
5621 }
5622
5623 // Safepoint support. Have to do call-back to safepoint code, if in the
5624 // middel of a safepoint operation
5625 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5626
5627 // XXX: Note that JavaThread::exit() call below removes the guards on the
5628 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5629 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5630 // of the guards is visible in jni_AttachCurrentThread above,
5631 // the removal of the guards is buried below in JavaThread::exit()
5632 // here. The abstraction should be more symmetrically either exposed
5633 // or hidden (e.g. it could probably be hidden in the same
5634 // (platform-dependent) methods where we do alternate stack
5635 // maintenance work?)
5636 thread->exit(false, JavaThread::jni_detach);
5637 delete thread;
5638
5639 #ifndef USDT2
5640 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5641 #else /* USDT2 */
5642 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5643 JNI_OK);
5644 #endif /* USDT2 */
5645 return JNI_OK;
5646 }
5647
5648 #ifndef USDT2
5649 DT_RETURN_MARK_DECL(GetEnv, jint);
5650 #else /* USDT2 */
5651 DT_RETURN_MARK_DECL(GetEnv, jint
5652 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5653 #endif /* USDT2 */
5654
5655 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5656 #ifndef USDT2
5657 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5658 #else /* USDT2 */
5659 HOTSPOT_JNI_GETENV_ENTRY(
5660 vm, penv, version);
5661 #endif /* USDT2 */
5662 jint ret = JNI_ERR;
5663 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5664
5665 if (!vm_created) {
5666 *penv = NULL;
5667 ret = JNI_EDETACHED;
5668 return ret;
5669 }
5670
5671 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5672 return ret;
5673 }
5674
5675 #ifndef JVMPI_VERSION_1
5676 // need these in order to be polite about older agents
5677 #define JVMPI_VERSION_1 ((jint)0x10000001)
5678 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5679 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5680 #endif // !JVMPI_VERSION_1
5681
5682 Thread* thread = ThreadLocalStorage::thread();
5683 if (thread != NULL && thread->is_Java_thread()) {
5684 if (Threads::is_supported_jni_version_including_1_1(version)) {
5685 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5686 ret = JNI_OK;
5687 return ret;
5688
5689 } else if (version == JVMPI_VERSION_1 ||
5690 version == JVMPI_VERSION_1_1 ||
5691 version == JVMPI_VERSION_1_2) {
5692 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5693 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5694 ret = JNI_EVERSION;
5695 return ret;
5696 } else if (JvmtiExport::is_jvmdi_version(version)) {
5697 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5698 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5699 ret = JNI_EVERSION;
5700 return ret;
5701 } else {
5702 *penv = NULL;
5703 ret = JNI_EVERSION;
5704 return ret;
5705 }
5706 } else {
5707 *penv = NULL;
5708 ret = JNI_EDETACHED;
5709 return ret;
5710 }
5711 }
5712
5713
5714 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5715 #ifndef USDT2
5716 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5717 #else /* USDT2 */
5718 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5719 vm, penv, _args);
5720 #endif /* USDT2 */
5721 if (!vm_created) {
5722 #ifndef USDT2
5723 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5724 #else /* USDT2 */
5725 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5726 (uint32_t) JNI_ERR);
5727 #endif /* USDT2 */
5728 return JNI_ERR;
5729 }
5730
5731 JNIWrapper("AttachCurrentThreadAsDaemon");
5732 jint ret = attach_current_thread(vm, penv, _args, true);
5733 #ifndef USDT2
5734 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5735 #else /* USDT2 */
5736 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5737 ret);
5738 #endif /* USDT2 */
5739 return ret;
5740 }
5741
5742
5743 } // End extern "C"
5744
5745 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5746 NULL,
5747 NULL,
5748 NULL,
5749
5750 jni_DestroyJavaVM,
5751 jni_AttachCurrentThread,
5752 jni_DetachCurrentThread,
5753 jni_GetEnv,
5754 jni_AttachCurrentThreadAsDaemon
5755 };