1 /*
2 * Copyright (c) 2001, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.inline.hpp"
27 #include "classfile/vmClasses.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "jni.h"
30 #include "jvm.h"
31 #include "logging/log.hpp"
32 #include "logging/logTag.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "memory/guardedMemory.hpp"
35 #include "oops/instanceKlass.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "oops/symbol.hpp"
38 #include "prims/jniCheck.hpp"
39 #include "prims/jvm_misc.hpp"
40 #include "runtime/fieldDescriptor.inline.hpp"
41 #include "runtime/handles.inline.hpp"
42 #include "runtime/interfaceSupport.inline.hpp"
43 #include "runtime/javaThread.hpp"
44 #include "runtime/jfieldIDWorkaround.hpp"
45 #include "runtime/jniHandles.inline.hpp"
46 #include "utilities/formatBuffer.hpp"
47 #include "utilities/utf8.hpp"
48
49 // Heap objects are allowed to be directly referenced only in VM code,
50 // not in native code.
51
52 #define ASSERT_OOPS_ALLOWED \
53 assert(JavaThread::current()->thread_state() == _thread_in_vm, \
54 "jniCheck examining oops in bad state.")
55
56
57 // Execute the given block of source code with the thread in VM state.
58 // To do this, transition from the NATIVE state to the VM state, execute
59 // the code, and transition back. The ThreadInVMfromNative constructor
60 // performs the transition to VM state, its destructor restores the
61 // NATIVE state.
62
63 #define IN_VM(source_code) { \
64 { \
65 ThreadInVMfromNative __tiv(thr); \
66 source_code \
67 } \
68 }
69
70
71 /*
72 * DECLARATIONS
73 */
74
75 static struct JNINativeInterface_ * unchecked_jni_NativeInterface;
76
77
78 /*
79 * MACRO DEFINITIONS
80 */
81
82 // All JNI checked functions here use JNI_ENTRY_CHECKED() instead of the
83 // QUICK_ENTRY or LEAF variants found in jni.cpp. This allows handles
84 // to be created if a fatal error should occur.
85
86 // Check for thread not attached to VM; need to catch this before
87 // assertions in the wrapper routines might fire
88
89 // Check for env being the one value appropriate for this thread.
90
91 #define JNI_ENTRY_CHECKED(result_type, header) \
92 extern "C" { \
93 result_type JNICALL header { \
94 Thread* cur = Thread::current_or_null(); \
95 if (cur == nullptr || !cur->is_Java_thread()) { \
96 tty->print_cr("%s", fatal_using_jnienv_in_nonjava); \
97 os::abort(true); \
98 } \
99 JavaThread* thr = JavaThread::cast(cur); \
100 JNIEnv* xenv = thr->jni_environment(); \
101 if (env != xenv) { \
102 NativeReportJNIFatalError(thr, warn_wrong_jnienv); \
103 } \
104 MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thr)); \
105 VM_ENTRY_BASE(result_type, header, thr)
106
107
108 #define UNCHECKED() (unchecked_jni_NativeInterface)
109
110 static const char * warn_wrong_jnienv = "Using JNIEnv in the wrong thread";
111 static const char * warn_bad_class_descriptor1 = "JNI FindClass received a bad class descriptor \"";
112 static const char * warn_bad_class_descriptor2 = "\". A correct class descriptor " \
113 "has no leading \"L\" or trailing \";\". Incorrect descriptors will not be accepted in future releases.";
114 static const char * fatal_using_jnienv_in_nonjava = "FATAL ERROR in native method: Using JNIEnv in non-Java thread";
115 static const char * warn_other_function_in_critical = "Warning: Calling other JNI functions in the scope of " \
116 "Get/ReleasePrimitiveArrayCritical or Get/ReleaseStringCritical";
117 static const char * fatal_bad_ref_to_jni = "Bad global or local ref passed to JNI";
118 static const char * fatal_received_null_class = "JNI received a null class";
119 static const char * fatal_class_not_a_class = "JNI received a class argument that is not a class";
120 static const char * fatal_class_not_a_throwable_class = "JNI Throw or ThrowNew received a class argument that is not a Throwable or Throwable subclass";
121 static const char * fatal_wrong_class_or_method = "Wrong object class or methodID passed to JNI call";
122 static const char * fatal_non_weak_method = "non-weak methodID passed to JNI call";
123 static const char * fatal_unknown_array_object = "Unknown array object passed to JNI array operations";
124 static const char * fatal_object_array_expected = "Object array expected but not received for JNI array operation";
125 static const char * fatal_prim_type_array_expected = "Primitive type array expected but not received for JNI array operation";
126 static const char * fatal_non_array = "Non-array passed to JNI array operations";
127 static const char * fatal_element_type_mismatch = "Array element type mismatch in JNI";
128 static const char * fatal_should_be_static = "Non-static field ID passed to JNI";
129 static const char * fatal_wrong_static_field = "Wrong static field ID passed to JNI";
130 static const char * fatal_static_field_not_found = "Static field not found in JNI get/set field operations";
131 static const char * fatal_static_field_mismatch = "Field type (static) mismatch in JNI get/set field operations";
132 static const char * fatal_should_be_nonstatic = "Static field ID passed to JNI";
133 static const char * fatal_null_object = "Null object passed to JNI";
134 static const char * fatal_wrong_field = "Wrong field ID passed to JNI";
135 static const char * fatal_instance_field_not_found = "Instance field not found in JNI get/set field operations";
136 static const char * fatal_instance_field_mismatch = "Field type (instance) mismatch in JNI get/set field operations";
137 static const char * fatal_non_string = "JNI string operation received a non-string";
138 static const char * fatal_non_utf8_class_name1 = "JNI class name is not a valid UTF8 string \"";
139 static const char * fatal_non_utf8_class_name2 = "\"";
140
141
142 // When in VM state:
143 static void ReportJNIWarning(JavaThread* thr, const char *msg) {
144 tty->print_cr("WARNING in native method: %s", msg);
145 thr->print_jni_stack();
146 }
147
148 // When in NATIVE state:
149 static void NativeReportJNIFatalError(JavaThread* thr, const char *msg) {
150 IN_VM(
151 ReportJNIFatalError(thr, msg);
152 )
153 }
154
155 static void NativeReportJNIWarning(JavaThread* thr, const char *msg) {
156 IN_VM(
157 ReportJNIWarning(thr, msg);
158 )
159 }
160
161
162
163
164 /*
165 * SUPPORT FUNCTIONS
166 */
167
168 /**
169 * Check whether or not a programmer has actually checked for exceptions. According
170 * to the JNI Specification ("jni/spec/design.html#java_exceptions"):
171 *
172 * There are two cases where the programmer needs to check for exceptions without
173 * being able to first check an error code:
174 *
175 * - The JNI functions that invoke a Java method return the result of the Java method.
176 * The programmer must call ExceptionOccurred() to check for possible exceptions
177 * that occurred during the execution of the Java method.
178 *
179 * - Some of the JNI array access functions do not return an error code, but may
180 * throw an ArrayIndexOutOfBoundsException or ArrayStoreException.
181 *
182 * In all other cases, a non-error return value guarantees that no exceptions have been thrown.
183 *
184 * Programmers often defend against ArrayIndexOutOfBoundsException, so warning
185 * for these functions would be pedantic.
186 */
187 static inline void
188 check_pending_exception(JavaThread* thr) {
189 if (thr->has_pending_exception()) {
190 NativeReportJNIWarning(thr, "JNI call made with exception pending");
191 }
192 if (thr->is_pending_jni_exception_check()) {
193 IN_VM(
194 tty->print_cr("WARNING in native method: JNI call made without checking exceptions when required to from %s",
195 thr->get_pending_jni_exception_check());
196 thr->print_jni_stack();
197 )
198 thr->clear_pending_jni_exception_check(); // Just complain once
199 }
200 }
201
202 static inline void
203 functionEnterCritical(JavaThread* thr)
204 {
205 check_pending_exception(thr);
206 }
207
208 static inline void
209 functionEnterCriticalExceptionAllowed(JavaThread* thr)
210 {
211 }
212
213 static inline void
214 functionEnter(JavaThread* thr)
215 {
216 if (thr->in_critical()) {
217 tty->print_cr("%s", warn_other_function_in_critical);
218 }
219 check_pending_exception(thr);
220 }
221
222 static inline void
223 functionEnterExceptionAllowed(JavaThread* thr)
224 {
225 if (thr->in_critical()) {
226 tty->print_cr("%s", warn_other_function_in_critical);
227 }
228 }
229
230 static inline void
231 functionExit(JavaThread* thr)
232 {
233 // No checks at this time
234 }
235
236 static inline void
237 checkStaticFieldID(JavaThread* thr, jfieldID fid, jclass cls, int ftype)
238 {
239 fieldDescriptor fd;
240
241 /* make sure it is a static field */
242 if (!jfieldIDWorkaround::is_static_jfieldID(fid))
243 ReportJNIFatalError(thr, fatal_should_be_static);
244
245 /* validate the class being passed */
246 ASSERT_OOPS_ALLOWED;
247 Klass* k_oop = jniCheck::validate_class(thr, cls, false);
248
249 /* check for proper subclass hierarchy */
250 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fid);
251 Klass* f_oop = id->holder();
252 if (!k_oop->is_subtype_of(f_oop))
253 ReportJNIFatalError(thr, fatal_wrong_static_field);
254
255 /* check for proper field type */
256 if (!id->find_local_field(&fd))
257 ReportJNIFatalError(thr, fatal_static_field_not_found);
258 if ((fd.field_type() != ftype) &&
259 !(fd.field_type() == T_ARRAY && ftype == T_OBJECT)) {
260 ReportJNIFatalError(thr, fatal_static_field_mismatch);
261 }
262 }
263
264 static inline void
265 checkInstanceFieldID(JavaThread* thr, jfieldID fid, jobject obj, int ftype)
266 {
267 fieldDescriptor fd;
268
269 /* make sure it is an instance field */
270 if (jfieldIDWorkaround::is_static_jfieldID(fid))
271 ReportJNIFatalError(thr, fatal_should_be_nonstatic);
272
273 /* validate the object being passed and then get its class */
274 ASSERT_OOPS_ALLOWED;
275 oop oopObj = jniCheck::validate_object(thr, obj);
276 if (oopObj == nullptr) {
277 ReportJNIFatalError(thr, fatal_null_object);
278 }
279 Klass* k_oop = oopObj->klass();
280
281 if (!jfieldIDWorkaround::is_valid_jfieldID(k_oop, fid)) {
282 ReportJNIFatalError(thr, fatal_wrong_field);
283 }
284
285 /* make sure the field exists */
286 int offset = jfieldIDWorkaround::from_instance_jfieldID(k_oop, fid);
287 if (!InstanceKlass::cast(k_oop)->contains_field_offset(offset))
288 ReportJNIFatalError(thr, fatal_wrong_field);
289
290 /* check for proper field type */
291 if (!InstanceKlass::cast(k_oop)->find_field_from_offset(offset,
292 false, &fd))
293 ReportJNIFatalError(thr, fatal_instance_field_not_found);
294
295 if ((fd.field_type() != ftype) &&
296 !(fd.field_type() == T_ARRAY && ftype == T_OBJECT)) {
297 ReportJNIFatalError(thr, fatal_instance_field_mismatch);
298 }
299 }
300
301 static inline void
302 checkString(JavaThread* thr, jstring js)
303 {
304 ASSERT_OOPS_ALLOWED;
305 oop s = jniCheck::validate_object(thr, js);
306 if ((s == nullptr) || !java_lang_String::is_instance(s))
307 ReportJNIFatalError(thr, fatal_non_string);
308 }
309
310 static inline arrayOop
311 check_is_array(JavaThread* thr, jarray jArray)
312 {
313 ASSERT_OOPS_ALLOWED;
314 arrayOop aOop;
315
316 aOop = (arrayOop)jniCheck::validate_object(thr, jArray);
317 if (aOop == nullptr || !aOop->is_array()) {
318 ReportJNIFatalError(thr, fatal_non_array);
319 }
320 return aOop;
321 }
322
323 static inline arrayOop
324 check_is_primitive_array(JavaThread* thr, jarray jArray) {
325 arrayOop aOop = check_is_array(thr, jArray);
326
327 if (!aOop->is_typeArray()) {
328 ReportJNIFatalError(thr, fatal_prim_type_array_expected);
329 }
330 return aOop;
331 }
332
333 static inline void
334 check_primitive_array_type(JavaThread* thr, jarray jArray, BasicType elementType)
335 {
336 BasicType array_type;
337 arrayOop aOop;
338
339 aOop = check_is_primitive_array(thr, jArray);
340 array_type = TypeArrayKlass::cast(aOop->klass())->element_type();
341 if (array_type != elementType) {
342 ReportJNIFatalError(thr, fatal_element_type_mismatch);
343 }
344 }
345
346 static inline void
347 check_is_obj_or_inline_array(JavaThread* thr, jarray jArray) {
348 arrayOop aOop = check_is_array(thr, jArray);
349 if (!aOop->is_objArray() && !aOop->is_flatArray()) {
350 ReportJNIFatalError(thr, fatal_object_array_expected);
351 }
352 }
353
354 /*
355 * Copy and wrap array elements for bounds checking.
356 * Remember the original elements (GuardedMemory::get_tag())
357 */
358 static void* check_jni_wrap_copy_array(JavaThread* thr, jarray array,
359 void* orig_elements) {
360 void* result;
361 IN_VM(
362 oop a = JNIHandles::resolve_non_null(array);
363 size_t len = arrayOop(a)->length() <<
364 TypeArrayKlass::cast(a->klass())->log2_element_size();
365 result = GuardedMemory::wrap_copy(orig_elements, len, orig_elements);
366 )
367 return result;
368 }
369
370 static void* check_wrapped_array(JavaThread* thr, const char* fn_name,
371 void* obj, void* carray, size_t* rsz) {
372 if (carray == nullptr) {
373 tty->print_cr("%s: elements vector null" PTR_FORMAT, fn_name, p2i(obj));
374 NativeReportJNIFatalError(thr, "Elements vector null");
375 }
376 GuardedMemory guarded(carray);
377 void* orig_result = guarded.get_tag();
378 if (!guarded.verify_guards()) {
379 tty->print_cr("%s: release array failed bounds check, incorrect pointer returned ? array: "
380 PTR_FORMAT " carray: " PTR_FORMAT, fn_name, p2i(obj), p2i(carray));
381 DEBUG_ONLY(guarded.print_on(tty);) // This may crash.
382 NativeReportJNIFatalError(thr, err_msg("%s: failed bounds check", fn_name));
383 }
384 if (orig_result == nullptr) {
385 tty->print_cr("%s: unrecognized elements. array: " PTR_FORMAT " carray: " PTR_FORMAT,
386 fn_name, p2i(obj), p2i(carray));
387 DEBUG_ONLY(guarded.print_on(tty);) // This may crash.
388 NativeReportJNIFatalError(thr, err_msg("%s: unrecognized elements", fn_name));
389 }
390 if (rsz != nullptr) {
391 *rsz = guarded.get_user_size();
392 }
393 return orig_result;
394 }
395
396 static void* check_wrapped_array_release(JavaThread* thr, const char* fn_name,
397 void* obj, void* carray, jint mode, jboolean is_critical) {
398 size_t sz;
399 void* orig_result = check_wrapped_array(thr, fn_name, obj, carray, &sz);
400 switch (mode) {
401 case 0:
402 memcpy(orig_result, carray, sz);
403 GuardedMemory::free_copy(carray);
404 break;
405 case JNI_COMMIT:
406 memcpy(orig_result, carray, sz);
407 if (is_critical) {
408 // For ReleasePrimitiveArrayCritical we must free the internal buffer
409 // allocated through GuardedMemory.
410 GuardedMemory::free_copy(carray);
411 }
412 break;
413 case JNI_ABORT:
414 GuardedMemory::free_copy(carray);
415 break;
416 default:
417 tty->print_cr("%s: Unrecognized mode %i releasing array "
418 PTR_FORMAT " elements " PTR_FORMAT, fn_name, mode, p2i(obj), p2i(carray));
419 NativeReportJNIFatalError(thr, "Unrecognized array release mode");
420 }
421 return orig_result;
422 }
423
424 oop jniCheck::validate_handle(JavaThread* thr, jobject obj) {
425 if ((obj != nullptr) && (JNIHandles::handle_type(thr, obj) != JNIInvalidRefType)) {
426 ASSERT_OOPS_ALLOWED;
427 return JNIHandles::resolve_external_guard(obj);
428 }
429 ReportJNIFatalError(thr, fatal_bad_ref_to_jni);
430 return nullptr;
431 }
432
433
434 Method* jniCheck::validate_jmethod_id(JavaThread* thr, jmethodID method_id) {
435 ASSERT_OOPS_ALLOWED;
436 // do the fast jmethodID check first
437 Method* m = Method::checked_resolve_jmethod_id(method_id);
438 if (m == nullptr) {
439 ReportJNIFatalError(thr, fatal_wrong_class_or_method);
440 }
441 // jmethodIDs are handles in the class loader data,
442 // but that can be expensive so check it last
443 else if (!Method::is_method_id(method_id)) {
444 ReportJNIFatalError(thr, fatal_non_weak_method);
445 }
446 return m;
447 }
448
449
450 oop jniCheck::validate_object(JavaThread* thr, jobject obj) {
451 if (obj == nullptr) return nullptr;
452 ASSERT_OOPS_ALLOWED;
453 oop oopObj = jniCheck::validate_handle(thr, obj);
454 if (oopObj == nullptr) {
455 ReportJNIFatalError(thr, fatal_bad_ref_to_jni);
456 }
457 return oopObj;
458 }
459
460 // Warn if a class descriptor is in decorated form; class descriptors
461 // passed to JNI findClass should not be decorated unless they are
462 // array descriptors.
463 void jniCheck::validate_class_descriptor(JavaThread* thr, const char* name) {
464 if (name == nullptr) return; // implementation accepts null so just return
465
466 size_t len = strlen(name);
467
468 if (len >= 2 &&
469 name[0] == JVM_SIGNATURE_CLASS && // 'L'
470 name[len-1] == JVM_SIGNATURE_ENDCLASS ) { // ';'
471 char msg[JVM_MAXPATHLEN];
472 jio_snprintf(msg, JVM_MAXPATHLEN, "%s%s%s",
473 warn_bad_class_descriptor1, name, warn_bad_class_descriptor2);
474 ReportJNIWarning(thr, msg);
475 }
476
477 // Verify that the class name given is a valid utf8 string
478 if (!UTF8::is_legal_utf8((const unsigned char*)name, (int)strlen(name), false)) {
479 char msg[JVM_MAXPATHLEN];
480 jio_snprintf(msg, JVM_MAXPATHLEN, "%s%s%s", fatal_non_utf8_class_name1, name, fatal_non_utf8_class_name2);
481 ReportJNIFatalError(thr, msg);
482 }
483 }
484
485 Klass* jniCheck::validate_class(JavaThread* thr, jclass clazz, bool allow_primitive) {
486 ASSERT_OOPS_ALLOWED;
487 oop mirror = jniCheck::validate_handle(thr, clazz);
488 if (mirror == nullptr) {
489 ReportJNIFatalError(thr, fatal_received_null_class);
490 }
491
492 if (mirror->klass() != vmClasses::Class_klass()) {
493 ReportJNIFatalError(thr, fatal_class_not_a_class);
494 }
495
496 Klass* k = java_lang_Class::as_Klass(mirror);
497 // Make allowances for primitive classes ...
498 if (!(k != nullptr || (allow_primitive && java_lang_Class::is_primitive(mirror)))) {
499 ReportJNIFatalError(thr, fatal_class_not_a_class);
500 }
501 return k;
502 }
503
504 void jniCheck::validate_throwable_klass(JavaThread* thr, Klass* klass) {
505 ASSERT_OOPS_ALLOWED;
506 assert(klass != nullptr, "klass argument must have a value");
507
508 if (!klass->is_instance_klass() ||
509 !klass->is_subclass_of(vmClasses::Throwable_klass())) {
510 ReportJNIFatalError(thr, fatal_class_not_a_throwable_class);
511 }
512 }
513
514 void jniCheck::validate_call(JavaThread* thr, jclass clazz, jmethodID method_id, jobject obj) {
515 ASSERT_OOPS_ALLOWED;
516 Method* m = jniCheck::validate_jmethod_id(thr, method_id);
517 InstanceKlass* holder = m->method_holder();
518
519 if (clazz != nullptr) {
520 Klass* k = jniCheck::validate_class(thr, clazz, false);
521 // Check that method is in the class, must be InstanceKlass
522 if (!InstanceKlass::cast(k)->is_subtype_of(holder)) {
523 ReportJNIFatalError(thr, fatal_wrong_class_or_method);
524 }
525 }
526
527 if (obj != nullptr) {
528 oop recv = jniCheck::validate_object(thr, obj);
529 assert(recv != nullptr, "validate_object checks that");
530 Klass* rk = recv->klass();
531
532 // Check that the object is a subtype of method holder too.
533 if (!rk->is_subtype_of(holder)) {
534 ReportJNIFatalError(thr, fatal_wrong_class_or_method);
535 }
536 }
537 }
538
539
540 /*
541 * IMPLEMENTATION OF FUNCTIONS IN CHECKED TABLE
542 */
543
544 JNI_ENTRY_CHECKED(jclass,
545 checked_jni_DefineClass(JNIEnv *env,
546 const char *name,
547 jobject loader,
548 const jbyte *buf,
549 jsize len))
550 functionEnter(thr);
551 IN_VM(
552 jniCheck::validate_object(thr, loader);
553 )
554 jclass result = UNCHECKED()->DefineClass(env, name, loader, buf, len);
555 functionExit(thr);
556 return result;
557 JNI_END
558
559 JNI_ENTRY_CHECKED(jclass,
560 checked_jni_FindClass(JNIEnv *env,
561 const char *name))
562 functionEnter(thr);
563 IN_VM(
564 jniCheck::validate_class_descriptor(thr, name);
565 )
566 jclass result = UNCHECKED()->FindClass(env, name);
567 functionExit(thr);
568 return result;
569 JNI_END
570
571 JNI_ENTRY_CHECKED(jmethodID,
572 checked_jni_FromReflectedMethod(JNIEnv *env,
573 jobject method))
574 functionEnter(thr);
575 IN_VM(
576 jniCheck::validate_object(thr, method);
577 )
578 jmethodID result = UNCHECKED()->FromReflectedMethod(env, method);
579 functionExit(thr);
580 return result;
581 JNI_END
582
583 JNI_ENTRY_CHECKED(jfieldID,
584 checked_jni_FromReflectedField(JNIEnv *env,
585 jobject field))
586 functionEnter(thr);
587 IN_VM(
588 jniCheck::validate_object(thr, field);
589 )
590 jfieldID result = UNCHECKED()->FromReflectedField(env, field);
591 functionExit(thr);
592 return result;
593 JNI_END
594
595 JNI_ENTRY_CHECKED(jobject,
596 checked_jni_ToReflectedMethod(JNIEnv *env,
597 jclass cls,
598 jmethodID methodID,
599 jboolean isStatic))
600 functionEnter(thr);
601 IN_VM(
602 jniCheck::validate_call(thr, cls, methodID);
603 )
604 jobject result = UNCHECKED()->ToReflectedMethod(env, cls, methodID,
605 isStatic);
606 functionExit(thr);
607 return result;
608 JNI_END
609
610 JNI_ENTRY_CHECKED(jclass,
611 checked_jni_GetSuperclass(JNIEnv *env,
612 jclass sub))
613 functionEnter(thr);
614 IN_VM(
615 jniCheck::validate_class(thr, sub, true);
616 )
617 jclass result = UNCHECKED()->GetSuperclass(env, sub);
618 functionExit(thr);
619 return result;
620 JNI_END
621
622 JNI_ENTRY_CHECKED(jboolean,
623 checked_jni_IsAssignableFrom(JNIEnv *env,
624 jclass sub,
625 jclass sup))
626 functionEnter(thr);
627 IN_VM(
628 jniCheck::validate_class(thr, sub, true);
629 jniCheck::validate_class(thr, sup, true);
630 )
631 jboolean result = UNCHECKED()->IsAssignableFrom(env, sub, sup);
632 functionExit(thr);
633 return result;
634 JNI_END
635
636 JNI_ENTRY_CHECKED(jobject,
637 checked_jni_ToReflectedField(JNIEnv *env,
638 jclass cls,
639 jfieldID fieldID,
640 jboolean isStatic))
641 functionEnter(thr);
642 IN_VM(
643 jniCheck::validate_class(thr, cls, false);
644 )
645 jobject result = UNCHECKED()->ToReflectedField(env, cls, fieldID,
646 isStatic);
647 functionExit(thr);
648 return result;
649 JNI_END
650
651 JNI_ENTRY_CHECKED(jint,
652 checked_jni_Throw(JNIEnv *env,
653 jthrowable obj))
654 functionEnter(thr);
655 IN_VM(
656 oop oopObj = jniCheck::validate_object(thr, obj);
657 if (oopObj == nullptr) {
658 // Unchecked Throw tolerates a null obj, so just warn
659 ReportJNIWarning(thr, "JNI Throw called with null throwable");
660 } else {
661 jniCheck::validate_throwable_klass(thr, oopObj->klass());
662 }
663 )
664 jint result = UNCHECKED()->Throw(env, obj);
665 functionExit(thr);
666 return result;
667 JNI_END
668
669 JNI_ENTRY_CHECKED(jint,
670 checked_jni_ThrowNew(JNIEnv *env,
671 jclass clazz,
672 const char *msg))
673 functionEnter(thr);
674 IN_VM(
675 Klass* k = jniCheck::validate_class(thr, clazz, false);
676 assert(k != nullptr, "validate_class shouldn't return null Klass*");
677 jniCheck::validate_throwable_klass(thr, k);
678 )
679 jint result = UNCHECKED()->ThrowNew(env, clazz, msg);
680 functionExit(thr);
681 return result;
682 JNI_END
683
684 JNI_ENTRY_CHECKED(jthrowable,
685 checked_jni_ExceptionOccurred(JNIEnv *env))
686 thr->clear_pending_jni_exception_check();
687 functionEnterExceptionAllowed(thr);
688 jthrowable result = UNCHECKED()->ExceptionOccurred(env);
689 functionExit(thr);
690 return result;
691 JNI_END
692
693 JNI_ENTRY_CHECKED(void,
694 checked_jni_ExceptionDescribe(JNIEnv *env))
695 functionEnterExceptionAllowed(thr);
696 UNCHECKED()->ExceptionDescribe(env);
697 functionExit(thr);
698 JNI_END
699
700 JNI_ENTRY_CHECKED(void,
701 checked_jni_ExceptionClear(JNIEnv *env))
702 thr->clear_pending_jni_exception_check();
703 functionEnterExceptionAllowed(thr);
704 UNCHECKED()->ExceptionClear(env);
705 functionExit(thr);
706 JNI_END
707
708 JNI_ENTRY_CHECKED(void,
709 checked_jni_FatalError(JNIEnv *env,
710 const char *msg))
711 thr->clear_pending_jni_exception_check();
712 functionEnter(thr);
713 UNCHECKED()->FatalError(env, msg);
714 functionExit(thr);
715 JNI_END
716
717 JNI_ENTRY_CHECKED(jint,
718 checked_jni_PushLocalFrame(JNIEnv *env,
719 jint capacity))
720 functionEnterExceptionAllowed(thr);
721 if (capacity < 0)
722 NativeReportJNIFatalError(thr, "negative capacity");
723 jint result = UNCHECKED()->PushLocalFrame(env, capacity);
724 functionExit(thr);
725 return result;
726 JNI_END
727
728 JNI_ENTRY_CHECKED(jobject,
729 checked_jni_PopLocalFrame(JNIEnv *env,
730 jobject result))
731 functionEnterExceptionAllowed(thr);
732 jobject res = UNCHECKED()->PopLocalFrame(env, result);
733 functionExit(thr);
734 return res;
735 JNI_END
736
737 JNI_ENTRY_CHECKED(jobject,
738 checked_jni_NewGlobalRef(JNIEnv *env,
739 jobject lobj))
740 functionEnter(thr);
741 IN_VM(
742 if (lobj != nullptr) {
743 jniCheck::validate_handle(thr, lobj);
744 }
745 )
746 jobject result = UNCHECKED()->NewGlobalRef(env,lobj);
747 functionExit(thr);
748 return result;
749 JNI_END
750
751 JNI_ENTRY_CHECKED(void,
752 checked_jni_DeleteGlobalRef(JNIEnv *env,
753 jobject gref))
754 functionEnterExceptionAllowed(thr);
755 IN_VM(
756 jniCheck::validate_object(thr, gref);
757 if (gref && !JNIHandles::is_global_handle(gref)) {
758 ReportJNIFatalError(thr,
759 "Invalid global JNI handle passed to DeleteGlobalRef");
760 }
761 )
762 UNCHECKED()->DeleteGlobalRef(env,gref);
763 functionExit(thr);
764 JNI_END
765
766 JNI_ENTRY_CHECKED(void,
767 checked_jni_DeleteLocalRef(JNIEnv *env,
768 jobject obj))
769 functionEnterExceptionAllowed(thr);
770 IN_VM(
771 jniCheck::validate_object(thr, obj);
772 if (obj && !(JNIHandles::is_local_handle(thr, obj) ||
773 JNIHandles::is_frame_handle(thr, obj)))
774 ReportJNIFatalError(thr,
775 "Invalid local JNI handle passed to DeleteLocalRef");
776 )
777 UNCHECKED()->DeleteLocalRef(env, obj);
778 functionExit(thr);
779 JNI_END
780
781 JNI_ENTRY_CHECKED(jboolean,
782 checked_jni_IsSameObject(JNIEnv *env,
783 jobject obj1,
784 jobject obj2))
785 functionEnterExceptionAllowed(thr);
786 IN_VM(
787 /* This JNI function can be used to compare weak global references
788 * to nullptr objects. If the handles are valid, but contain nullptr,
789 * then don't attempt to validate the object.
790 */
791 if (obj1 != nullptr && jniCheck::validate_handle(thr, obj1) != nullptr) {
792 jniCheck::validate_object(thr, obj1);
793 }
794 if (obj2 != nullptr && jniCheck::validate_handle(thr, obj2) != nullptr) {
795 jniCheck::validate_object(thr, obj2);
796 }
797 )
798 jboolean result = UNCHECKED()->IsSameObject(env,obj1,obj2);
799 functionExit(thr);
800 return result;
801 JNI_END
802
803 JNI_ENTRY_CHECKED(jobject,
804 checked_jni_NewLocalRef(JNIEnv *env,
805 jobject ref))
806 functionEnter(thr);
807 IN_VM(
808 if (ref != nullptr) {
809 jniCheck::validate_handle(thr, ref);
810 }
811 )
812 jobject result = UNCHECKED()->NewLocalRef(env, ref);
813 functionExit(thr);
814 return result;
815 JNI_END
816
817 JNI_ENTRY_CHECKED(jint,
818 checked_jni_EnsureLocalCapacity(JNIEnv *env,
819 jint capacity))
820 functionEnter(thr);
821 if (capacity < 0) {
822 NativeReportJNIFatalError(thr, "negative capacity");
823 }
824 jint result = UNCHECKED()->EnsureLocalCapacity(env, capacity);
825 functionExit(thr);
826 return result;
827 JNI_END
828
829 JNI_ENTRY_CHECKED(jobject,
830 checked_jni_AllocObject(JNIEnv *env,
831 jclass clazz))
832 functionEnter(thr);
833 IN_VM(
834 jniCheck::validate_class(thr, clazz, false);
835 )
836 jobject result = UNCHECKED()->AllocObject(env,clazz);
837 functionExit(thr);
838 return result;
839 JNI_END
840
841 JNI_ENTRY_CHECKED(jobject,
842 checked_jni_NewObject(JNIEnv *env,
843 jclass clazz,
844 jmethodID methodID,
845 ...))
846 functionEnter(thr);
847 va_list args;
848 IN_VM(
849 jniCheck::validate_call(thr, clazz, methodID);
850 )
851 va_start(args, methodID);
852 jobject result = UNCHECKED()->NewObjectV(env,clazz,methodID,args);
853 va_end(args);
854 functionExit(thr);
855 return result;
856 JNI_END
857
858 JNI_ENTRY_CHECKED(jobject,
859 checked_jni_NewObjectV(JNIEnv *env,
860 jclass clazz,
861 jmethodID methodID,
862 va_list args))
863 functionEnter(thr);
864 IN_VM(
865 jniCheck::validate_call(thr, clazz, methodID);
866 )
867 jobject result = UNCHECKED()->NewObjectV(env,clazz,methodID,args);
868 functionExit(thr);
869 return result;
870 JNI_END
871
872 JNI_ENTRY_CHECKED(jobject,
873 checked_jni_NewObjectA(JNIEnv *env,
874 jclass clazz,
875 jmethodID methodID,
876 const jvalue *args))
877 functionEnter(thr);
878 IN_VM(
879 jniCheck::validate_call(thr, clazz, methodID);
880 )
881 jobject result = UNCHECKED()->NewObjectA(env,clazz,methodID,args);
882 functionExit(thr);
883 return result;
884 JNI_END
885
886 JNI_ENTRY_CHECKED(jclass,
887 checked_jni_GetObjectClass(JNIEnv *env,
888 jobject obj))
889 functionEnter(thr);
890 IN_VM(
891 jniCheck::validate_object(thr, obj);
892 )
893 jclass result = UNCHECKED()->GetObjectClass(env,obj);
894 functionExit(thr);
895 return result;
896 JNI_END
897
898 JNI_ENTRY_CHECKED(jboolean,
899 checked_jni_IsInstanceOf(JNIEnv *env,
900 jobject obj,
901 jclass clazz))
902 functionEnter(thr);
903 IN_VM(
904 jniCheck::validate_object(thr, obj);
905 jniCheck::validate_class(thr, clazz, true);
906 )
907 jboolean result = UNCHECKED()->IsInstanceOf(env,obj,clazz);
908 functionExit(thr);
909 return result;
910 JNI_END
911
912 JNI_ENTRY_CHECKED(jmethodID,
913 checked_jni_GetMethodID(JNIEnv *env,
914 jclass clazz,
915 const char *name,
916 const char *sig))
917 functionEnter(thr);
918 IN_VM(
919 jniCheck::validate_class(thr, clazz, false);
920 )
921 jmethodID result = UNCHECKED()->GetMethodID(env,clazz,name,sig);
922 functionExit(thr);
923 return result;
924 JNI_END
925
926 #define WRAPPER_CallMethod(ResultType, Result) \
927 JNI_ENTRY_CHECKED(ResultType, \
928 checked_jni_Call##Result##Method(JNIEnv *env, \
929 jobject obj, \
930 jmethodID methodID, \
931 ...)) \
932 functionEnter(thr); \
933 va_list args; \
934 IN_VM( \
935 jniCheck::validate_call(thr, nullptr, methodID, obj); \
936 ) \
937 va_start(args,methodID); \
938 ResultType result =UNCHECKED()->Call##Result##MethodV(env, obj, methodID, \
939 args); \
940 va_end(args); \
941 thr->set_pending_jni_exception_check("Call"#Result"Method"); \
942 functionExit(thr); \
943 return result; \
944 JNI_END \
945 \
946 JNI_ENTRY_CHECKED(ResultType, \
947 checked_jni_Call##Result##MethodV(JNIEnv *env, \
948 jobject obj, \
949 jmethodID methodID, \
950 va_list args)) \
951 functionEnter(thr); \
952 IN_VM(\
953 jniCheck::validate_call(thr, nullptr, methodID, obj); \
954 ) \
955 ResultType result = UNCHECKED()->Call##Result##MethodV(env, obj, methodID,\
956 args); \
957 thr->set_pending_jni_exception_check("Call"#Result"MethodV"); \
958 functionExit(thr); \
959 return result; \
960 JNI_END \
961 \
962 JNI_ENTRY_CHECKED(ResultType, \
963 checked_jni_Call##Result##MethodA(JNIEnv *env, \
964 jobject obj, \
965 jmethodID methodID, \
966 const jvalue * args)) \
967 functionEnter(thr); \
968 IN_VM( \
969 jniCheck::validate_call(thr, nullptr, methodID, obj); \
970 ) \
971 ResultType result = UNCHECKED()->Call##Result##MethodA(env, obj, methodID,\
972 args); \
973 thr->set_pending_jni_exception_check("Call"#Result"MethodA"); \
974 functionExit(thr); \
975 return result; \
976 JNI_END
977
978 WRAPPER_CallMethod(jobject,Object)
979 WRAPPER_CallMethod(jboolean,Boolean)
980 WRAPPER_CallMethod(jbyte,Byte)
981 WRAPPER_CallMethod(jshort,Short)
982 WRAPPER_CallMethod(jchar,Char)
983 WRAPPER_CallMethod(jint,Int)
984 WRAPPER_CallMethod(jlong,Long)
985 WRAPPER_CallMethod(jfloat,Float)
986 WRAPPER_CallMethod(jdouble,Double)
987
988 JNI_ENTRY_CHECKED(void,
989 checked_jni_CallVoidMethod(JNIEnv *env, \
990 jobject obj, \
991 jmethodID methodID, \
992 ...))
993 functionEnter(thr);
994 va_list args;
995 IN_VM(
996 jniCheck::validate_call(thr, nullptr, methodID, obj);
997 )
998 va_start(args,methodID);
999 UNCHECKED()->CallVoidMethodV(env,obj,methodID,args);
1000 va_end(args);
1001 thr->set_pending_jni_exception_check("CallVoidMethod");
1002 functionExit(thr);
1003 JNI_END
1004
1005 JNI_ENTRY_CHECKED(void,
1006 checked_jni_CallVoidMethodV(JNIEnv *env,
1007 jobject obj,
1008 jmethodID methodID,
1009 va_list args))
1010 functionEnter(thr);
1011 IN_VM(
1012 jniCheck::validate_call(thr, nullptr, methodID, obj);
1013 )
1014 UNCHECKED()->CallVoidMethodV(env,obj,methodID,args);
1015 thr->set_pending_jni_exception_check("CallVoidMethodV");
1016 functionExit(thr);
1017 JNI_END
1018
1019 JNI_ENTRY_CHECKED(void,
1020 checked_jni_CallVoidMethodA(JNIEnv *env,
1021 jobject obj,
1022 jmethodID methodID,
1023 const jvalue * args))
1024 functionEnter(thr);
1025 IN_VM(
1026 jniCheck::validate_call(thr, nullptr, methodID, obj);
1027 )
1028 UNCHECKED()->CallVoidMethodA(env,obj,methodID,args);
1029 thr->set_pending_jni_exception_check("CallVoidMethodA");
1030 functionExit(thr);
1031 JNI_END
1032
1033 #define WRAPPER_CallNonvirtualMethod(ResultType, Result) \
1034 JNI_ENTRY_CHECKED(ResultType, \
1035 checked_jni_CallNonvirtual##Result##Method(JNIEnv *env, \
1036 jobject obj, \
1037 jclass clazz, \
1038 jmethodID methodID, \
1039 ...)) \
1040 functionEnter(thr); \
1041 va_list args; \
1042 IN_VM( \
1043 jniCheck::validate_call(thr, clazz, methodID, obj); \
1044 ) \
1045 va_start(args,methodID); \
1046 ResultType result = UNCHECKED()->CallNonvirtual##Result##MethodV(env, \
1047 obj, \
1048 clazz, \
1049 methodID,\
1050 args); \
1051 va_end(args); \
1052 thr->set_pending_jni_exception_check("CallNonvirtual"#Result"Method"); \
1053 functionExit(thr); \
1054 return result; \
1055 JNI_END \
1056 \
1057 JNI_ENTRY_CHECKED(ResultType, \
1058 checked_jni_CallNonvirtual##Result##MethodV(JNIEnv *env, \
1059 jobject obj, \
1060 jclass clazz, \
1061 jmethodID methodID, \
1062 va_list args)) \
1063 functionEnter(thr); \
1064 IN_VM( \
1065 jniCheck::validate_call(thr, clazz, methodID, obj); \
1066 ) \
1067 ResultType result = UNCHECKED()->CallNonvirtual##Result##MethodV(env, \
1068 obj, \
1069 clazz, \
1070 methodID,\
1071 args); \
1072 thr->set_pending_jni_exception_check("CallNonvirtual"#Result"MethodV"); \
1073 functionExit(thr); \
1074 return result; \
1075 JNI_END \
1076 \
1077 JNI_ENTRY_CHECKED(ResultType, \
1078 checked_jni_CallNonvirtual##Result##MethodA(JNIEnv *env, \
1079 jobject obj, \
1080 jclass clazz, \
1081 jmethodID methodID, \
1082 const jvalue * args)) \
1083 functionEnter(thr); \
1084 IN_VM( \
1085 jniCheck::validate_call(thr, clazz, methodID, obj); \
1086 ) \
1087 ResultType result = UNCHECKED()->CallNonvirtual##Result##MethodA(env, \
1088 obj, \
1089 clazz, \
1090 methodID,\
1091 args); \
1092 thr->set_pending_jni_exception_check("CallNonvirtual"#Result"MethodA"); \
1093 functionExit(thr); \
1094 return result; \
1095 JNI_END
1096
1097 WRAPPER_CallNonvirtualMethod(jobject,Object)
1098 WRAPPER_CallNonvirtualMethod(jboolean,Boolean)
1099 WRAPPER_CallNonvirtualMethod(jbyte,Byte)
1100 WRAPPER_CallNonvirtualMethod(jshort,Short)
1101 WRAPPER_CallNonvirtualMethod(jchar,Char)
1102 WRAPPER_CallNonvirtualMethod(jint,Int)
1103 WRAPPER_CallNonvirtualMethod(jlong,Long)
1104 WRAPPER_CallNonvirtualMethod(jfloat,Float)
1105 WRAPPER_CallNonvirtualMethod(jdouble,Double)
1106
1107 JNI_ENTRY_CHECKED(void,
1108 checked_jni_CallNonvirtualVoidMethod(JNIEnv *env,
1109 jobject obj,
1110 jclass clazz,
1111 jmethodID methodID,
1112 ...))
1113 functionEnter(thr);
1114 va_list args;
1115 IN_VM(
1116 jniCheck::validate_call(thr, clazz, methodID, obj);
1117 )
1118 va_start(args,methodID);
1119 UNCHECKED()->CallNonvirtualVoidMethodV(env,obj,clazz,methodID,args);
1120 va_end(args);
1121 thr->set_pending_jni_exception_check("CallNonvirtualVoidMethod");
1122 functionExit(thr);
1123 JNI_END
1124
1125 JNI_ENTRY_CHECKED(void,
1126 checked_jni_CallNonvirtualVoidMethodV(JNIEnv *env,
1127 jobject obj,
1128 jclass clazz,
1129 jmethodID methodID,
1130 va_list args))
1131 functionEnter(thr);
1132 IN_VM(
1133 jniCheck::validate_call(thr, clazz, methodID, obj);
1134 )
1135 UNCHECKED()->CallNonvirtualVoidMethodV(env,obj,clazz,methodID,args);
1136 thr->set_pending_jni_exception_check("CallNonvirtualVoidMethodV");
1137 functionExit(thr);
1138 JNI_END
1139
1140 JNI_ENTRY_CHECKED(void,
1141 checked_jni_CallNonvirtualVoidMethodA(JNIEnv *env,
1142 jobject obj,
1143 jclass clazz,
1144 jmethodID methodID,
1145 const jvalue * args))
1146 functionEnter(thr);
1147 IN_VM(
1148 jniCheck::validate_call(thr, clazz, methodID, obj);
1149 )
1150 UNCHECKED()->CallNonvirtualVoidMethodA(env,obj,clazz,methodID,args);
1151 thr->set_pending_jni_exception_check("CallNonvirtualVoidMethodA");
1152 functionExit(thr);
1153 JNI_END
1154
1155 JNI_ENTRY_CHECKED(jfieldID,
1156 checked_jni_GetFieldID(JNIEnv *env,
1157 jclass clazz,
1158 const char *name,
1159 const char *sig))
1160 functionEnter(thr);
1161 IN_VM(
1162 jniCheck::validate_class(thr, clazz, false);
1163 )
1164 jfieldID result = UNCHECKED()->GetFieldID(env,clazz,name,sig);
1165 functionExit(thr);
1166 return result;
1167 JNI_END
1168
1169 #define WRAPPER_GetField(ReturnType,Result,FieldType) \
1170 JNI_ENTRY_CHECKED(ReturnType, \
1171 checked_jni_Get##Result##Field(JNIEnv *env, \
1172 jobject obj, \
1173 jfieldID fieldID)) \
1174 functionEnter(thr); \
1175 IN_VM( \
1176 checkInstanceFieldID(thr, fieldID, obj, FieldType); \
1177 ) \
1178 ReturnType result = UNCHECKED()->Get##Result##Field(env,obj,fieldID); \
1179 functionExit(thr); \
1180 return result; \
1181 JNI_END
1182
1183 WRAPPER_GetField(jobject, Object, T_OBJECT)
1184 WRAPPER_GetField(jboolean, Boolean, T_BOOLEAN)
1185 WRAPPER_GetField(jbyte, Byte, T_BYTE)
1186 WRAPPER_GetField(jshort, Short, T_SHORT)
1187 WRAPPER_GetField(jchar, Char, T_CHAR)
1188 WRAPPER_GetField(jint, Int, T_INT)
1189 WRAPPER_GetField(jlong, Long, T_LONG)
1190 WRAPPER_GetField(jfloat, Float, T_FLOAT)
1191 WRAPPER_GetField(jdouble, Double, T_DOUBLE)
1192
1193 #define WRAPPER_SetField(ValueType,Result,FieldType) \
1194 JNI_ENTRY_CHECKED(void, \
1195 checked_jni_Set##Result##Field(JNIEnv *env, \
1196 jobject obj, \
1197 jfieldID fieldID, \
1198 ValueType val)) \
1199 functionEnter(thr); \
1200 IN_VM( \
1201 checkInstanceFieldID(thr, fieldID, obj, FieldType); \
1202 ) \
1203 UNCHECKED()->Set##Result##Field(env,obj,fieldID,val); \
1204 functionExit(thr); \
1205 JNI_END
1206
1207 WRAPPER_SetField(jobject, Object, T_OBJECT)
1208 WRAPPER_SetField(jboolean, Boolean, T_BOOLEAN)
1209 WRAPPER_SetField(jbyte, Byte, T_BYTE)
1210 WRAPPER_SetField(jshort, Short, T_SHORT)
1211 WRAPPER_SetField(jchar, Char, T_CHAR)
1212 WRAPPER_SetField(jint, Int, T_INT)
1213 WRAPPER_SetField(jlong, Long, T_LONG)
1214 WRAPPER_SetField(jfloat, Float, T_FLOAT)
1215 WRAPPER_SetField(jdouble, Double, T_DOUBLE)
1216
1217
1218 JNI_ENTRY_CHECKED(jmethodID,
1219 checked_jni_GetStaticMethodID(JNIEnv *env,
1220 jclass clazz,
1221 const char *name,
1222 const char *sig))
1223 functionEnter(thr);
1224 IN_VM(
1225 jniCheck::validate_class(thr, clazz, false);
1226 )
1227 jmethodID result = UNCHECKED()->GetStaticMethodID(env,clazz,name,sig);
1228 functionExit(thr);
1229 return result;
1230 JNI_END
1231
1232 #define WRAPPER_CallStaticMethod(ReturnType,Result) \
1233 JNI_ENTRY_CHECKED(ReturnType, \
1234 checked_jni_CallStatic##Result##Method(JNIEnv *env, \
1235 jclass clazz, \
1236 jmethodID methodID, \
1237 ...)) \
1238 functionEnter(thr); \
1239 va_list args; \
1240 IN_VM( \
1241 jniCheck::validate_call(thr, clazz, methodID); \
1242 ) \
1243 va_start(args,methodID); \
1244 ReturnType result = UNCHECKED()->CallStatic##Result##MethodV(env, \
1245 clazz, \
1246 methodID, \
1247 args); \
1248 va_end(args); \
1249 thr->set_pending_jni_exception_check("CallStatic"#Result"Method"); \
1250 functionExit(thr); \
1251 return result; \
1252 JNI_END \
1253 \
1254 JNI_ENTRY_CHECKED(ReturnType, \
1255 checked_jni_CallStatic##Result##MethodV(JNIEnv *env, \
1256 jclass clazz, \
1257 jmethodID methodID,\
1258 va_list args)) \
1259 functionEnter(thr); \
1260 IN_VM( \
1261 jniCheck::validate_call(thr, clazz, methodID); \
1262 ) \
1263 ReturnType result = UNCHECKED()->CallStatic##Result##MethodV(env, \
1264 clazz, \
1265 methodID, \
1266 args); \
1267 thr->set_pending_jni_exception_check("CallStatic"#Result"MethodV"); \
1268 functionExit(thr); \
1269 return result; \
1270 JNI_END \
1271 \
1272 JNI_ENTRY_CHECKED(ReturnType, \
1273 checked_jni_CallStatic##Result##MethodA(JNIEnv *env, \
1274 jclass clazz, \
1275 jmethodID methodID, \
1276 const jvalue *args)) \
1277 functionEnter(thr); \
1278 IN_VM( \
1279 jniCheck::validate_call(thr, clazz, methodID); \
1280 ) \
1281 ReturnType result = UNCHECKED()->CallStatic##Result##MethodA(env, \
1282 clazz, \
1283 methodID, \
1284 args); \
1285 thr->set_pending_jni_exception_check("CallStatic"#Result"MethodA"); \
1286 functionExit(thr); \
1287 return result; \
1288 JNI_END
1289
1290 WRAPPER_CallStaticMethod(jobject,Object)
1291 WRAPPER_CallStaticMethod(jboolean,Boolean)
1292 WRAPPER_CallStaticMethod(jbyte,Byte)
1293 WRAPPER_CallStaticMethod(jshort,Short)
1294 WRAPPER_CallStaticMethod(jchar,Char)
1295 WRAPPER_CallStaticMethod(jint,Int)
1296 WRAPPER_CallStaticMethod(jlong,Long)
1297 WRAPPER_CallStaticMethod(jfloat,Float)
1298 WRAPPER_CallStaticMethod(jdouble,Double)
1299
1300 JNI_ENTRY_CHECKED(void,
1301 checked_jni_CallStaticVoidMethod(JNIEnv *env,
1302 jclass cls,
1303 jmethodID methodID,
1304 ...))
1305 functionEnter(thr);
1306 va_list args;
1307 IN_VM(
1308 jniCheck::validate_call(thr, cls, methodID);
1309 )
1310 va_start(args,methodID);
1311 UNCHECKED()->CallStaticVoidMethodV(env,cls,methodID,args);
1312 va_end(args);
1313 thr->set_pending_jni_exception_check("CallStaticVoidMethod");
1314 functionExit(thr);
1315 JNI_END
1316
1317 JNI_ENTRY_CHECKED(void,
1318 checked_jni_CallStaticVoidMethodV(JNIEnv *env,
1319 jclass cls,
1320 jmethodID methodID,
1321 va_list args))
1322 functionEnter(thr);
1323 IN_VM(
1324 jniCheck::validate_call(thr, cls, methodID);
1325 )
1326 UNCHECKED()->CallStaticVoidMethodV(env,cls,methodID,args);
1327 thr->set_pending_jni_exception_check("CallStaticVoidMethodV");
1328 functionExit(thr);
1329 JNI_END
1330
1331 JNI_ENTRY_CHECKED(void,
1332 checked_jni_CallStaticVoidMethodA(JNIEnv *env,
1333 jclass cls,
1334 jmethodID methodID,
1335 const jvalue * args))
1336 functionEnter(thr);
1337 IN_VM(
1338 jniCheck::validate_call(thr, cls, methodID);
1339 )
1340 UNCHECKED()->CallStaticVoidMethodA(env,cls,methodID,args);
1341 thr->set_pending_jni_exception_check("CallStaticVoidMethodA");
1342 functionExit(thr);
1343 JNI_END
1344
1345 JNI_ENTRY_CHECKED(jfieldID,
1346 checked_jni_GetStaticFieldID(JNIEnv *env,
1347 jclass clazz,
1348 const char *name,
1349 const char *sig))
1350 functionEnter(thr);
1351 IN_VM(
1352 jniCheck::validate_class(thr, clazz, false);
1353 )
1354 jfieldID result = UNCHECKED()->GetStaticFieldID(env,clazz,name,sig);
1355 functionExit(thr);
1356 return result;
1357 JNI_END
1358
1359 #define WRAPPER_GetStaticField(ReturnType,Result,FieldType) \
1360 JNI_ENTRY_CHECKED(ReturnType, \
1361 checked_jni_GetStatic##Result##Field(JNIEnv *env, \
1362 jclass clazz, \
1363 jfieldID fieldID)) \
1364 functionEnter(thr); \
1365 IN_VM( \
1366 jniCheck::validate_class(thr, clazz, false); \
1367 checkStaticFieldID(thr, fieldID, clazz, FieldType); \
1368 ) \
1369 ReturnType result = UNCHECKED()->GetStatic##Result##Field(env, \
1370 clazz, \
1371 fieldID); \
1372 functionExit(thr); \
1373 return result; \
1374 JNI_END
1375
1376 WRAPPER_GetStaticField(jobject, Object, T_OBJECT)
1377 WRAPPER_GetStaticField(jboolean, Boolean, T_BOOLEAN)
1378 WRAPPER_GetStaticField(jbyte, Byte, T_BYTE)
1379 WRAPPER_GetStaticField(jshort, Short, T_SHORT)
1380 WRAPPER_GetStaticField(jchar, Char, T_CHAR)
1381 WRAPPER_GetStaticField(jint, Int, T_INT)
1382 WRAPPER_GetStaticField(jlong, Long, T_LONG)
1383 WRAPPER_GetStaticField(jfloat, Float, T_FLOAT)
1384 WRAPPER_GetStaticField(jdouble, Double, T_DOUBLE)
1385
1386 #define WRAPPER_SetStaticField(ValueType,Result,FieldType) \
1387 JNI_ENTRY_CHECKED(void, \
1388 checked_jni_SetStatic##Result##Field(JNIEnv *env, \
1389 jclass clazz, \
1390 jfieldID fieldID, \
1391 ValueType value)) \
1392 functionEnter(thr); \
1393 IN_VM( \
1394 jniCheck::validate_class(thr, clazz, false); \
1395 checkStaticFieldID(thr, fieldID, clazz, FieldType); \
1396 ) \
1397 UNCHECKED()->SetStatic##Result##Field(env,clazz,fieldID,value); \
1398 functionExit(thr); \
1399 JNI_END
1400
1401 WRAPPER_SetStaticField(jobject, Object, T_OBJECT)
1402 WRAPPER_SetStaticField(jboolean, Boolean, T_BOOLEAN)
1403 WRAPPER_SetStaticField(jbyte, Byte, T_BYTE)
1404 WRAPPER_SetStaticField(jshort, Short, T_SHORT)
1405 WRAPPER_SetStaticField(jchar, Char, T_CHAR)
1406 WRAPPER_SetStaticField(jint, Int, T_INT)
1407 WRAPPER_SetStaticField(jlong, Long, T_LONG)
1408 WRAPPER_SetStaticField(jfloat, Float, T_FLOAT)
1409 WRAPPER_SetStaticField(jdouble, Double, T_DOUBLE)
1410
1411
1412 JNI_ENTRY_CHECKED(jstring,
1413 checked_jni_NewString(JNIEnv *env,
1414 const jchar *unicode,
1415 jsize len))
1416 functionEnter(thr);
1417 jstring result = UNCHECKED()->NewString(env,unicode,len);
1418 functionExit(thr);
1419 return result;
1420 JNI_END
1421
1422 JNI_ENTRY_CHECKED(jsize,
1423 checked_jni_GetStringLength(JNIEnv *env,
1424 jstring str))
1425 functionEnter(thr);
1426 IN_VM(
1427 checkString(thr, str);
1428 )
1429 jsize result = UNCHECKED()->GetStringLength(env,str);
1430 functionExit(thr);
1431 return result;
1432 JNI_END
1433
1434 // Arbitrary (but well-known) tag
1435 const void* STRING_TAG = (void*)0x47114711;
1436
1437 JNI_ENTRY_CHECKED(const jchar *,
1438 checked_jni_GetStringChars(JNIEnv *env,
1439 jstring str,
1440 jboolean *isCopy))
1441 functionEnter(thr);
1442 IN_VM(
1443 checkString(thr, str);
1444 )
1445 jchar* new_result = nullptr;
1446 const jchar *result = UNCHECKED()->GetStringChars(env,str,isCopy);
1447 assert (isCopy == nullptr || *isCopy == JNI_TRUE, "GetStringChars didn't return a copy as expected");
1448 if (result != nullptr) {
1449 size_t len = UNCHECKED()->GetStringLength(env,str) + 1; // + 1 for null termination
1450 len *= sizeof(jchar);
1451 new_result = (jchar*) GuardedMemory::wrap_copy(result, len, STRING_TAG);
1452 if (new_result == nullptr) {
1453 vm_exit_out_of_memory(len, OOM_MALLOC_ERROR, "checked_jni_GetStringChars");
1454 }
1455 // Avoiding call to UNCHECKED()->ReleaseStringChars() since that will fire unexpected dtrace probes
1456 // Note that the dtrace arguments for the allocated memory will not match up with this solution.
1457 FreeHeap((char*)result);
1458 }
1459 functionExit(thr);
1460 return new_result;
1461 JNI_END
1462
1463 JNI_ENTRY_CHECKED(void,
1464 checked_jni_ReleaseStringChars(JNIEnv *env,
1465 jstring str,
1466 const jchar *chars))
1467 functionEnterExceptionAllowed(thr);
1468 IN_VM(
1469 checkString(thr, str);
1470 )
1471 if (chars == nullptr) {
1472 // still do the unchecked call to allow dtrace probes
1473 UNCHECKED()->ReleaseStringChars(env,str,chars);
1474 }
1475 else {
1476 GuardedMemory guarded((void*)chars);
1477 if (!guarded.verify_guards()) {
1478 tty->print_cr("ReleaseStringChars: release chars failed bounds check. "
1479 "string: " PTR_FORMAT " chars: " PTR_FORMAT, p2i(str), p2i(chars));
1480 guarded.print_on(tty);
1481 NativeReportJNIFatalError(thr, "ReleaseStringChars: "
1482 "release chars failed bounds check.");
1483 }
1484 if (guarded.get_tag() != STRING_TAG) {
1485 tty->print_cr("ReleaseStringChars: called on something not allocated "
1486 "by GetStringChars. string: " PTR_FORMAT " chars: " PTR_FORMAT,
1487 p2i(str), p2i(chars));
1488 NativeReportJNIFatalError(thr, "ReleaseStringChars called on something "
1489 "not allocated by GetStringChars");
1490 }
1491 UNCHECKED()->ReleaseStringChars(env, str,
1492 (const jchar*) guarded.release_for_freeing());
1493 }
1494 functionExit(thr);
1495 JNI_END
1496
1497 JNI_ENTRY_CHECKED(jstring,
1498 checked_jni_NewStringUTF(JNIEnv *env,
1499 const char *utf))
1500 functionEnter(thr);
1501 jstring result = UNCHECKED()->NewStringUTF(env,utf);
1502 functionExit(thr);
1503 return result;
1504 JNI_END
1505
1506 JNI_ENTRY_CHECKED(jsize,
1507 checked_jni_GetStringUTFLength(JNIEnv *env,
1508 jstring str))
1509 functionEnter(thr);
1510 IN_VM(
1511 checkString(thr, str);
1512 )
1513 jsize result = UNCHECKED()->GetStringUTFLength(env,str);
1514 functionExit(thr);
1515 return result;
1516 JNI_END
1517
1518 // Arbitrary (but well-known) tag - different than GetStringChars
1519 const void* STRING_UTF_TAG = (void*) 0x48124812;
1520
1521 JNI_ENTRY_CHECKED(const char *,
1522 checked_jni_GetStringUTFChars(JNIEnv *env,
1523 jstring str,
1524 jboolean *isCopy))
1525 functionEnter(thr);
1526 IN_VM(
1527 checkString(thr, str);
1528 )
1529 char* new_result = nullptr;
1530 const char *result = UNCHECKED()->GetStringUTFChars(env,str,isCopy);
1531 assert (isCopy == nullptr || *isCopy == JNI_TRUE, "GetStringUTFChars didn't return a copy as expected");
1532 if (result != nullptr) {
1533 size_t len = strlen(result) + 1; // + 1 for null termination
1534 new_result = (char*) GuardedMemory::wrap_copy(result, len, STRING_UTF_TAG);
1535 if (new_result == nullptr) {
1536 vm_exit_out_of_memory(len, OOM_MALLOC_ERROR, "checked_jni_GetStringUTFChars");
1537 }
1538 // Avoiding call to UNCHECKED()->ReleaseStringUTFChars() since that will fire unexpected dtrace probes
1539 // Note that the dtrace arguments for the allocated memory will not match up with this solution.
1540 FreeHeap((char*)result);
1541 }
1542 functionExit(thr);
1543 return new_result;
1544 JNI_END
1545
1546 JNI_ENTRY_CHECKED(void,
1547 checked_jni_ReleaseStringUTFChars(JNIEnv *env,
1548 jstring str,
1549 const char* chars))
1550 functionEnterExceptionAllowed(thr);
1551 IN_VM(
1552 checkString(thr, str);
1553 )
1554 if (chars == nullptr) {
1555 // still do the unchecked call to allow dtrace probes
1556 UNCHECKED()->ReleaseStringUTFChars(env,str,chars);
1557 }
1558 else {
1559 GuardedMemory guarded((void*)chars);
1560 if (!guarded.verify_guards()) {
1561 tty->print_cr("ReleaseStringUTFChars: release chars failed bounds check. "
1562 "string: " PTR_FORMAT " chars: " PTR_FORMAT, p2i(str), p2i(chars));
1563 guarded.print_on(tty);
1564 NativeReportJNIFatalError(thr, "ReleaseStringUTFChars: "
1565 "release chars failed bounds check.");
1566 }
1567 if (guarded.get_tag() != STRING_UTF_TAG) {
1568 tty->print_cr("ReleaseStringUTFChars: called on something not "
1569 "allocated by GetStringUTFChars. string: " PTR_FORMAT " chars: "
1570 PTR_FORMAT, p2i(str), p2i(chars));
1571 NativeReportJNIFatalError(thr, "ReleaseStringUTFChars "
1572 "called on something not allocated by GetStringUTFChars");
1573 }
1574 UNCHECKED()->ReleaseStringUTFChars(env, str,
1575 (const char*) guarded.release_for_freeing());
1576 }
1577 functionExit(thr);
1578 JNI_END
1579
1580 JNI_ENTRY_CHECKED(jsize,
1581 checked_jni_GetArrayLength(JNIEnv *env,
1582 jarray array))
1583 functionEnter(thr);
1584 IN_VM(
1585 check_is_array(thr, array);
1586 )
1587 jsize result = UNCHECKED()->GetArrayLength(env,array);
1588 functionExit(thr);
1589 return result;
1590 JNI_END
1591
1592 JNI_ENTRY_CHECKED(jobjectArray,
1593 checked_jni_NewObjectArray(JNIEnv *env,
1594 jsize len,
1595 jclass clazz,
1596 jobject init))
1597 functionEnter(thr);
1598 jobjectArray result = UNCHECKED()->NewObjectArray(env,len,clazz,init);
1599 functionExit(thr);
1600 return result;
1601 JNI_END
1602
1603 JNI_ENTRY_CHECKED(jobject,
1604 checked_jni_GetObjectArrayElement(JNIEnv *env,
1605 jobjectArray array,
1606 jsize index))
1607 functionEnter(thr);
1608 IN_VM(
1609 check_is_obj_or_inline_array(thr, array);
1610 )
1611 jobject result = UNCHECKED()->GetObjectArrayElement(env,array,index);
1612 functionExit(thr);
1613 return result;
1614 JNI_END
1615
1616 JNI_ENTRY_CHECKED(void,
1617 checked_jni_SetObjectArrayElement(JNIEnv *env,
1618 jobjectArray array,
1619 jsize index,
1620 jobject val))
1621 functionEnter(thr);
1622 IN_VM(
1623 check_is_obj_or_inline_array(thr, array);
1624 )
1625 UNCHECKED()->SetObjectArrayElement(env,array,index,val);
1626 functionExit(thr);
1627 JNI_END
1628
1629 #define WRAPPER_NewScalarArray(Return, Result) \
1630 JNI_ENTRY_CHECKED(Return, \
1631 checked_jni_New##Result##Array(JNIEnv *env, \
1632 jsize len)) \
1633 functionEnter(thr); \
1634 Return result = UNCHECKED()->New##Result##Array(env,len); \
1635 functionExit(thr); \
1636 return (Return) result; \
1637 JNI_END
1638
1639 WRAPPER_NewScalarArray(jbooleanArray, Boolean)
1640 WRAPPER_NewScalarArray(jbyteArray, Byte)
1641 WRAPPER_NewScalarArray(jshortArray, Short)
1642 WRAPPER_NewScalarArray(jcharArray, Char)
1643 WRAPPER_NewScalarArray(jintArray, Int)
1644 WRAPPER_NewScalarArray(jlongArray, Long)
1645 WRAPPER_NewScalarArray(jfloatArray, Float)
1646 WRAPPER_NewScalarArray(jdoubleArray, Double)
1647
1648 #define WRAPPER_GetScalarArrayElements(ElementTag,ElementType,Result) \
1649 JNI_ENTRY_CHECKED(ElementType *, \
1650 checked_jni_Get##Result##ArrayElements(JNIEnv *env, \
1651 ElementType##Array array, \
1652 jboolean *isCopy)) \
1653 functionEnter(thr); \
1654 IN_VM( \
1655 check_primitive_array_type(thr, array, ElementTag); \
1656 ) \
1657 ElementType *result = UNCHECKED()->Get##Result##ArrayElements(env, \
1658 array, \
1659 isCopy); \
1660 if (result != nullptr) { \
1661 result = (ElementType *) check_jni_wrap_copy_array(thr, array, result); \
1662 } \
1663 functionExit(thr); \
1664 return result; \
1665 JNI_END
1666
1667 WRAPPER_GetScalarArrayElements(T_BOOLEAN, jboolean, Boolean)
1668 WRAPPER_GetScalarArrayElements(T_BYTE, jbyte, Byte)
1669 WRAPPER_GetScalarArrayElements(T_SHORT, jshort, Short)
1670 WRAPPER_GetScalarArrayElements(T_CHAR, jchar, Char)
1671 WRAPPER_GetScalarArrayElements(T_INT, jint, Int)
1672 WRAPPER_GetScalarArrayElements(T_LONG, jlong, Long)
1673 WRAPPER_GetScalarArrayElements(T_FLOAT, jfloat, Float)
1674 WRAPPER_GetScalarArrayElements(T_DOUBLE, jdouble, Double)
1675
1676 #define WRAPPER_ReleaseScalarArrayElements(ElementTag,ElementType,Result,Tag) \
1677 JNI_ENTRY_CHECKED(void, \
1678 checked_jni_Release##Result##ArrayElements(JNIEnv *env, \
1679 ElementType##Array array, \
1680 ElementType *elems, \
1681 jint mode)) \
1682 functionEnterExceptionAllowed(thr); \
1683 IN_VM( \
1684 check_primitive_array_type(thr, array, ElementTag); \
1685 ASSERT_OOPS_ALLOWED; \
1686 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
1687 ) \
1688 ElementType* orig_result = (ElementType *) check_wrapped_array_release( \
1689 thr, "checked_jni_Release"#Result"ArrayElements", array, elems, mode, JNI_FALSE); \
1690 UNCHECKED()->Release##Result##ArrayElements(env, array, orig_result, mode); \
1691 functionExit(thr); \
1692 JNI_END
1693
1694 WRAPPER_ReleaseScalarArrayElements(T_BOOLEAN,jboolean, Boolean, bool)
1695 WRAPPER_ReleaseScalarArrayElements(T_BYTE, jbyte, Byte, byte)
1696 WRAPPER_ReleaseScalarArrayElements(T_SHORT, jshort, Short, short)
1697 WRAPPER_ReleaseScalarArrayElements(T_CHAR, jchar, Char, char)
1698 WRAPPER_ReleaseScalarArrayElements(T_INT, jint, Int, int)
1699 WRAPPER_ReleaseScalarArrayElements(T_LONG, jlong, Long, long)
1700 WRAPPER_ReleaseScalarArrayElements(T_FLOAT, jfloat, Float, float)
1701 WRAPPER_ReleaseScalarArrayElements(T_DOUBLE, jdouble, Double, double)
1702
1703 #define WRAPPER_GetScalarArrayRegion(ElementTag,ElementType,Result) \
1704 JNI_ENTRY_CHECKED(void, \
1705 checked_jni_Get##Result##ArrayRegion(JNIEnv *env, \
1706 ElementType##Array array, \
1707 jsize start, \
1708 jsize len, \
1709 ElementType *buf)) \
1710 functionEnter(thr); \
1711 IN_VM( \
1712 check_primitive_array_type(thr, array, ElementTag); \
1713 ) \
1714 UNCHECKED()->Get##Result##ArrayRegion(env,array,start,len,buf); \
1715 functionExit(thr); \
1716 JNI_END
1717
1718 WRAPPER_GetScalarArrayRegion(T_BOOLEAN, jboolean, Boolean)
1719 WRAPPER_GetScalarArrayRegion(T_BYTE, jbyte, Byte)
1720 WRAPPER_GetScalarArrayRegion(T_SHORT, jshort, Short)
1721 WRAPPER_GetScalarArrayRegion(T_CHAR, jchar, Char)
1722 WRAPPER_GetScalarArrayRegion(T_INT, jint, Int)
1723 WRAPPER_GetScalarArrayRegion(T_LONG, jlong, Long)
1724 WRAPPER_GetScalarArrayRegion(T_FLOAT, jfloat, Float)
1725 WRAPPER_GetScalarArrayRegion(T_DOUBLE, jdouble, Double)
1726
1727 #define WRAPPER_SetScalarArrayRegion(ElementTag,ElementType,Result) \
1728 JNI_ENTRY_CHECKED(void, \
1729 checked_jni_Set##Result##ArrayRegion(JNIEnv *env, \
1730 ElementType##Array array, \
1731 jsize start, \
1732 jsize len, \
1733 const ElementType *buf)) \
1734 functionEnter(thr); \
1735 IN_VM( \
1736 check_primitive_array_type(thr, array, ElementTag); \
1737 ) \
1738 UNCHECKED()->Set##Result##ArrayRegion(env,array,start,len,buf); \
1739 functionExit(thr); \
1740 JNI_END
1741
1742 WRAPPER_SetScalarArrayRegion(T_BOOLEAN, jboolean, Boolean)
1743 WRAPPER_SetScalarArrayRegion(T_BYTE, jbyte, Byte)
1744 WRAPPER_SetScalarArrayRegion(T_SHORT, jshort, Short)
1745 WRAPPER_SetScalarArrayRegion(T_CHAR, jchar, Char)
1746 WRAPPER_SetScalarArrayRegion(T_INT, jint, Int)
1747 WRAPPER_SetScalarArrayRegion(T_LONG, jlong, Long)
1748 WRAPPER_SetScalarArrayRegion(T_FLOAT, jfloat, Float)
1749 WRAPPER_SetScalarArrayRegion(T_DOUBLE, jdouble, Double)
1750
1751 JNI_ENTRY_CHECKED(jint,
1752 checked_jni_RegisterNatives(JNIEnv *env,
1753 jclass clazz,
1754 const JNINativeMethod *methods,
1755 jint nMethods))
1756 functionEnter(thr);
1757 jint result = UNCHECKED()->RegisterNatives(env,clazz,methods,nMethods);
1758 functionExit(thr);
1759 return result;
1760 JNI_END
1761
1762 JNI_ENTRY_CHECKED(jint,
1763 checked_jni_UnregisterNatives(JNIEnv *env,
1764 jclass clazz))
1765 functionEnter(thr);
1766 jint result = UNCHECKED()->UnregisterNatives(env,clazz);
1767 functionExit(thr);
1768 return result;
1769 JNI_END
1770
1771 JNI_ENTRY_CHECKED(jint,
1772 checked_jni_MonitorEnter(JNIEnv *env,
1773 jobject obj))
1774 functionEnter(thr);
1775 IN_VM(
1776 jniCheck::validate_object(thr, obj);
1777 )
1778 jint result = UNCHECKED()->MonitorEnter(env,obj);
1779 functionExit(thr);
1780 return result;
1781 JNI_END
1782
1783 JNI_ENTRY_CHECKED(jint,
1784 checked_jni_MonitorExit(JNIEnv *env,
1785 jobject obj))
1786 functionEnterExceptionAllowed(thr);
1787 IN_VM(
1788 jniCheck::validate_object(thr, obj);
1789 )
1790 jint result = UNCHECKED()->MonitorExit(env,obj);
1791 functionExit(thr);
1792 return result;
1793 JNI_END
1794
1795 JNI_ENTRY_CHECKED(jint,
1796 checked_jni_GetJavaVM(JNIEnv *env,
1797 JavaVM **vm))
1798 functionEnter(thr);
1799 jint result = UNCHECKED()->GetJavaVM(env,vm);
1800 functionExit(thr);
1801 return result;
1802 JNI_END
1803
1804 JNI_ENTRY_CHECKED(void,
1805 checked_jni_GetStringRegion(JNIEnv *env,
1806 jstring str,
1807 jsize start,
1808 jsize len,
1809 jchar *buf))
1810 functionEnter(thr);
1811 IN_VM(
1812 checkString(thr, str);
1813 )
1814 UNCHECKED()->GetStringRegion(env, str, start, len, buf);
1815 functionExit(thr);
1816 JNI_END
1817
1818 JNI_ENTRY_CHECKED(void,
1819 checked_jni_GetStringUTFRegion(JNIEnv *env,
1820 jstring str,
1821 jsize start,
1822 jsize len,
1823 char *buf))
1824 functionEnter(thr);
1825 IN_VM(
1826 checkString(thr, str);
1827 )
1828 UNCHECKED()->GetStringUTFRegion(env, str, start, len, buf);
1829 functionExit(thr);
1830 JNI_END
1831
1832 JNI_ENTRY_CHECKED(void *,
1833 checked_jni_GetPrimitiveArrayCritical(JNIEnv *env,
1834 jarray array,
1835 jboolean *isCopy))
1836 functionEnterCritical(thr);
1837 IN_VM(
1838 check_is_primitive_array(thr, array);
1839 )
1840 void *result = UNCHECKED()->GetPrimitiveArrayCritical(env, array, isCopy);
1841 if (result != nullptr) {
1842 result = check_jni_wrap_copy_array(thr, array, result);
1843 }
1844 functionExit(thr);
1845 return result;
1846 JNI_END
1847
1848 JNI_ENTRY_CHECKED(void,
1849 checked_jni_ReleasePrimitiveArrayCritical(JNIEnv *env,
1850 jarray array,
1851 void *carray,
1852 jint mode))
1853 functionEnterCriticalExceptionAllowed(thr);
1854 IN_VM(
1855 check_is_primitive_array(thr, array);
1856 )
1857 // Check the element array...
1858 void* orig_result = check_wrapped_array_release(thr, "ReleasePrimitiveArrayCritical",
1859 array, carray, mode, JNI_TRUE);
1860 UNCHECKED()->ReleasePrimitiveArrayCritical(env, array, orig_result, mode);
1861 functionExit(thr);
1862 JNI_END
1863
1864 JNI_ENTRY_CHECKED(const jchar*,
1865 checked_jni_GetStringCritical(JNIEnv *env,
1866 jstring string,
1867 jboolean *isCopy))
1868 functionEnterCritical(thr);
1869 IN_VM(
1870 checkString(thr, string);
1871 )
1872 const jchar *result = UNCHECKED()->GetStringCritical(env, string, isCopy);
1873 functionExit(thr);
1874 return result;
1875 JNI_END
1876
1877 JNI_ENTRY_CHECKED(void,
1878 checked_jni_ReleaseStringCritical(JNIEnv *env,
1879 jstring str,
1880 const jchar *chars))
1881 functionEnterCriticalExceptionAllowed(thr);
1882 IN_VM(
1883 checkString(thr, str);
1884 )
1885 /* The Hotspot JNI code does not use the parameters, so just check the
1886 * string parameter as a minor sanity check
1887 */
1888 UNCHECKED()->ReleaseStringCritical(env, str, chars);
1889 functionExit(thr);
1890 JNI_END
1891
1892 JNI_ENTRY_CHECKED(jweak,
1893 checked_jni_NewWeakGlobalRef(JNIEnv *env,
1894 jobject obj))
1895 functionEnter(thr);
1896 IN_VM(
1897 if (obj != nullptr) {
1898 jniCheck::validate_handle(thr, obj);
1899 }
1900 )
1901 jweak result = UNCHECKED()->NewWeakGlobalRef(env, obj);
1902 functionExit(thr);
1903 return result;
1904 JNI_END
1905
1906 JNI_ENTRY_CHECKED(void,
1907 checked_jni_DeleteWeakGlobalRef(JNIEnv *env,
1908 jweak ref))
1909 functionEnterExceptionAllowed(thr);
1910 IN_VM(
1911 if (ref && !JNIHandles::is_weak_global_handle(ref)) {
1912 ReportJNIFatalError(thr,
1913 "Invalid weak global JNI handle passed to DeleteWeakGlobalRef");
1914 }
1915 )
1916 UNCHECKED()->DeleteWeakGlobalRef(env, ref);
1917 functionExit(thr);
1918 JNI_END
1919
1920 JNI_ENTRY_CHECKED(jboolean,
1921 checked_jni_ExceptionCheck(JNIEnv *env))
1922 thr->clear_pending_jni_exception_check();
1923 functionEnterExceptionAllowed(thr);
1924 jboolean result = UNCHECKED()->ExceptionCheck(env);
1925 functionExit(thr);
1926 return result;
1927 JNI_END
1928
1929 JNI_ENTRY_CHECKED(jobject,
1930 checked_jni_NewDirectByteBuffer(JNIEnv *env,
1931 void *address,
1932 jlong capacity))
1933 functionEnter(thr);
1934 jobject result = UNCHECKED()->NewDirectByteBuffer(env, address, capacity);
1935 functionExit(thr);
1936 return result;
1937 JNI_END
1938
1939 JNI_ENTRY_CHECKED(void *,
1940 checked_jni_GetDirectBufferAddress(JNIEnv *env,
1941 jobject buf))
1942 functionEnter(thr);
1943 void* result = UNCHECKED()->GetDirectBufferAddress(env, buf);
1944 functionExit(thr);
1945 return result;
1946 JNI_END
1947
1948 JNI_ENTRY_CHECKED(jlong,
1949 checked_jni_GetDirectBufferCapacity(JNIEnv *env,
1950 jobject buf))
1951 functionEnter(thr);
1952 jlong result = UNCHECKED()->GetDirectBufferCapacity(env, buf);
1953 functionExit(thr);
1954 return result;
1955 JNI_END
1956
1957 JNI_ENTRY_CHECKED(jobjectRefType,
1958 checked_jni_GetObjectRefType(JNIEnv *env,
1959 jobject obj))
1960 functionEnter(thr);
1961 /* validate the object being passed */
1962 IN_VM(
1963 jniCheck::validate_object(thr, obj);
1964 )
1965 jobjectRefType result = UNCHECKED()->GetObjectRefType(env, obj);
1966 functionExit(thr);
1967 return result;
1968 JNI_END
1969
1970
1971 JNI_ENTRY_CHECKED(jint,
1972 checked_jni_GetVersion(JNIEnv *env))
1973 functionEnter(thr);
1974 jint result = UNCHECKED()->GetVersion(env);
1975 functionExit(thr);
1976 return result;
1977 JNI_END
1978
1979 JNI_ENTRY_CHECKED(jobject,
1980 checked_jni_GetModule(JNIEnv *env,
1981 jclass clazz))
1982 functionEnter(thr);
1983 jobject result = UNCHECKED()->GetModule(env, clazz);
1984 functionExit(thr);
1985 return result;
1986 JNI_END
1987
1988 JNI_ENTRY_CHECKED(jboolean,
1989 checked_jni_IsVirtualThread(JNIEnv *env,
1990 jobject obj))
1991 functionEnter(thr);
1992 jboolean result = UNCHECKED()->IsVirtualThread(env, obj);
1993 functionExit(thr);
1994 return result;
1995 JNI_END
1996
1997 /*
1998 * Structure containing all checked jni functions
1999 */
2000 struct JNINativeInterface_ checked_jni_NativeInterface = {
2001 nullptr,
2002 nullptr,
2003 nullptr,
2004
2005 nullptr,
2006
2007 checked_jni_GetVersion,
2008
2009 checked_jni_DefineClass,
2010 checked_jni_FindClass,
2011
2012 checked_jni_FromReflectedMethod,
2013 checked_jni_FromReflectedField,
2014
2015 checked_jni_ToReflectedMethod,
2016
2017 checked_jni_GetSuperclass,
2018 checked_jni_IsAssignableFrom,
2019
2020 checked_jni_ToReflectedField,
2021
2022 checked_jni_Throw,
2023 checked_jni_ThrowNew,
2024 checked_jni_ExceptionOccurred,
2025 checked_jni_ExceptionDescribe,
2026 checked_jni_ExceptionClear,
2027 checked_jni_FatalError,
2028
2029 checked_jni_PushLocalFrame,
2030 checked_jni_PopLocalFrame,
2031
2032 checked_jni_NewGlobalRef,
2033 checked_jni_DeleteGlobalRef,
2034 checked_jni_DeleteLocalRef,
2035 checked_jni_IsSameObject,
2036
2037 checked_jni_NewLocalRef,
2038 checked_jni_EnsureLocalCapacity,
2039
2040 checked_jni_AllocObject,
2041 checked_jni_NewObject,
2042 checked_jni_NewObjectV,
2043 checked_jni_NewObjectA,
2044
2045 checked_jni_GetObjectClass,
2046 checked_jni_IsInstanceOf,
2047
2048 checked_jni_GetMethodID,
2049
2050 checked_jni_CallObjectMethod,
2051 checked_jni_CallObjectMethodV,
2052 checked_jni_CallObjectMethodA,
2053 checked_jni_CallBooleanMethod,
2054 checked_jni_CallBooleanMethodV,
2055 checked_jni_CallBooleanMethodA,
2056 checked_jni_CallByteMethod,
2057 checked_jni_CallByteMethodV,
2058 checked_jni_CallByteMethodA,
2059 checked_jni_CallCharMethod,
2060 checked_jni_CallCharMethodV,
2061 checked_jni_CallCharMethodA,
2062 checked_jni_CallShortMethod,
2063 checked_jni_CallShortMethodV,
2064 checked_jni_CallShortMethodA,
2065 checked_jni_CallIntMethod,
2066 checked_jni_CallIntMethodV,
2067 checked_jni_CallIntMethodA,
2068 checked_jni_CallLongMethod,
2069 checked_jni_CallLongMethodV,
2070 checked_jni_CallLongMethodA,
2071 checked_jni_CallFloatMethod,
2072 checked_jni_CallFloatMethodV,
2073 checked_jni_CallFloatMethodA,
2074 checked_jni_CallDoubleMethod,
2075 checked_jni_CallDoubleMethodV,
2076 checked_jni_CallDoubleMethodA,
2077 checked_jni_CallVoidMethod,
2078 checked_jni_CallVoidMethodV,
2079 checked_jni_CallVoidMethodA,
2080
2081 checked_jni_CallNonvirtualObjectMethod,
2082 checked_jni_CallNonvirtualObjectMethodV,
2083 checked_jni_CallNonvirtualObjectMethodA,
2084 checked_jni_CallNonvirtualBooleanMethod,
2085 checked_jni_CallNonvirtualBooleanMethodV,
2086 checked_jni_CallNonvirtualBooleanMethodA,
2087 checked_jni_CallNonvirtualByteMethod,
2088 checked_jni_CallNonvirtualByteMethodV,
2089 checked_jni_CallNonvirtualByteMethodA,
2090 checked_jni_CallNonvirtualCharMethod,
2091 checked_jni_CallNonvirtualCharMethodV,
2092 checked_jni_CallNonvirtualCharMethodA,
2093 checked_jni_CallNonvirtualShortMethod,
2094 checked_jni_CallNonvirtualShortMethodV,
2095 checked_jni_CallNonvirtualShortMethodA,
2096 checked_jni_CallNonvirtualIntMethod,
2097 checked_jni_CallNonvirtualIntMethodV,
2098 checked_jni_CallNonvirtualIntMethodA,
2099 checked_jni_CallNonvirtualLongMethod,
2100 checked_jni_CallNonvirtualLongMethodV,
2101 checked_jni_CallNonvirtualLongMethodA,
2102 checked_jni_CallNonvirtualFloatMethod,
2103 checked_jni_CallNonvirtualFloatMethodV,
2104 checked_jni_CallNonvirtualFloatMethodA,
2105 checked_jni_CallNonvirtualDoubleMethod,
2106 checked_jni_CallNonvirtualDoubleMethodV,
2107 checked_jni_CallNonvirtualDoubleMethodA,
2108 checked_jni_CallNonvirtualVoidMethod,
2109 checked_jni_CallNonvirtualVoidMethodV,
2110 checked_jni_CallNonvirtualVoidMethodA,
2111
2112 checked_jni_GetFieldID,
2113
2114 checked_jni_GetObjectField,
2115 checked_jni_GetBooleanField,
2116 checked_jni_GetByteField,
2117 checked_jni_GetCharField,
2118 checked_jni_GetShortField,
2119 checked_jni_GetIntField,
2120 checked_jni_GetLongField,
2121 checked_jni_GetFloatField,
2122 checked_jni_GetDoubleField,
2123
2124 checked_jni_SetObjectField,
2125 checked_jni_SetBooleanField,
2126 checked_jni_SetByteField,
2127 checked_jni_SetCharField,
2128 checked_jni_SetShortField,
2129 checked_jni_SetIntField,
2130 checked_jni_SetLongField,
2131 checked_jni_SetFloatField,
2132 checked_jni_SetDoubleField,
2133
2134 checked_jni_GetStaticMethodID,
2135
2136 checked_jni_CallStaticObjectMethod,
2137 checked_jni_CallStaticObjectMethodV,
2138 checked_jni_CallStaticObjectMethodA,
2139 checked_jni_CallStaticBooleanMethod,
2140 checked_jni_CallStaticBooleanMethodV,
2141 checked_jni_CallStaticBooleanMethodA,
2142 checked_jni_CallStaticByteMethod,
2143 checked_jni_CallStaticByteMethodV,
2144 checked_jni_CallStaticByteMethodA,
2145 checked_jni_CallStaticCharMethod,
2146 checked_jni_CallStaticCharMethodV,
2147 checked_jni_CallStaticCharMethodA,
2148 checked_jni_CallStaticShortMethod,
2149 checked_jni_CallStaticShortMethodV,
2150 checked_jni_CallStaticShortMethodA,
2151 checked_jni_CallStaticIntMethod,
2152 checked_jni_CallStaticIntMethodV,
2153 checked_jni_CallStaticIntMethodA,
2154 checked_jni_CallStaticLongMethod,
2155 checked_jni_CallStaticLongMethodV,
2156 checked_jni_CallStaticLongMethodA,
2157 checked_jni_CallStaticFloatMethod,
2158 checked_jni_CallStaticFloatMethodV,
2159 checked_jni_CallStaticFloatMethodA,
2160 checked_jni_CallStaticDoubleMethod,
2161 checked_jni_CallStaticDoubleMethodV,
2162 checked_jni_CallStaticDoubleMethodA,
2163 checked_jni_CallStaticVoidMethod,
2164 checked_jni_CallStaticVoidMethodV,
2165 checked_jni_CallStaticVoidMethodA,
2166
2167 checked_jni_GetStaticFieldID,
2168
2169 checked_jni_GetStaticObjectField,
2170 checked_jni_GetStaticBooleanField,
2171 checked_jni_GetStaticByteField,
2172 checked_jni_GetStaticCharField,
2173 checked_jni_GetStaticShortField,
2174 checked_jni_GetStaticIntField,
2175 checked_jni_GetStaticLongField,
2176 checked_jni_GetStaticFloatField,
2177 checked_jni_GetStaticDoubleField,
2178
2179 checked_jni_SetStaticObjectField,
2180 checked_jni_SetStaticBooleanField,
2181 checked_jni_SetStaticByteField,
2182 checked_jni_SetStaticCharField,
2183 checked_jni_SetStaticShortField,
2184 checked_jni_SetStaticIntField,
2185 checked_jni_SetStaticLongField,
2186 checked_jni_SetStaticFloatField,
2187 checked_jni_SetStaticDoubleField,
2188
2189 checked_jni_NewString,
2190 checked_jni_GetStringLength,
2191 checked_jni_GetStringChars,
2192 checked_jni_ReleaseStringChars,
2193
2194 checked_jni_NewStringUTF,
2195 checked_jni_GetStringUTFLength,
2196 checked_jni_GetStringUTFChars,
2197 checked_jni_ReleaseStringUTFChars,
2198
2199 checked_jni_GetArrayLength,
2200
2201 checked_jni_NewObjectArray,
2202 checked_jni_GetObjectArrayElement,
2203 checked_jni_SetObjectArrayElement,
2204
2205 checked_jni_NewBooleanArray,
2206 checked_jni_NewByteArray,
2207 checked_jni_NewCharArray,
2208 checked_jni_NewShortArray,
2209 checked_jni_NewIntArray,
2210 checked_jni_NewLongArray,
2211 checked_jni_NewFloatArray,
2212 checked_jni_NewDoubleArray,
2213
2214 checked_jni_GetBooleanArrayElements,
2215 checked_jni_GetByteArrayElements,
2216 checked_jni_GetCharArrayElements,
2217 checked_jni_GetShortArrayElements,
2218 checked_jni_GetIntArrayElements,
2219 checked_jni_GetLongArrayElements,
2220 checked_jni_GetFloatArrayElements,
2221 checked_jni_GetDoubleArrayElements,
2222
2223 checked_jni_ReleaseBooleanArrayElements,
2224 checked_jni_ReleaseByteArrayElements,
2225 checked_jni_ReleaseCharArrayElements,
2226 checked_jni_ReleaseShortArrayElements,
2227 checked_jni_ReleaseIntArrayElements,
2228 checked_jni_ReleaseLongArrayElements,
2229 checked_jni_ReleaseFloatArrayElements,
2230 checked_jni_ReleaseDoubleArrayElements,
2231
2232 checked_jni_GetBooleanArrayRegion,
2233 checked_jni_GetByteArrayRegion,
2234 checked_jni_GetCharArrayRegion,
2235 checked_jni_GetShortArrayRegion,
2236 checked_jni_GetIntArrayRegion,
2237 checked_jni_GetLongArrayRegion,
2238 checked_jni_GetFloatArrayRegion,
2239 checked_jni_GetDoubleArrayRegion,
2240
2241 checked_jni_SetBooleanArrayRegion,
2242 checked_jni_SetByteArrayRegion,
2243 checked_jni_SetCharArrayRegion,
2244 checked_jni_SetShortArrayRegion,
2245 checked_jni_SetIntArrayRegion,
2246 checked_jni_SetLongArrayRegion,
2247 checked_jni_SetFloatArrayRegion,
2248 checked_jni_SetDoubleArrayRegion,
2249
2250 checked_jni_RegisterNatives,
2251 checked_jni_UnregisterNatives,
2252
2253 checked_jni_MonitorEnter,
2254 checked_jni_MonitorExit,
2255
2256 checked_jni_GetJavaVM,
2257
2258 checked_jni_GetStringRegion,
2259 checked_jni_GetStringUTFRegion,
2260
2261 checked_jni_GetPrimitiveArrayCritical,
2262 checked_jni_ReleasePrimitiveArrayCritical,
2263
2264 checked_jni_GetStringCritical,
2265 checked_jni_ReleaseStringCritical,
2266
2267 checked_jni_NewWeakGlobalRef,
2268 checked_jni_DeleteWeakGlobalRef,
2269
2270 checked_jni_ExceptionCheck,
2271
2272 checked_jni_NewDirectByteBuffer,
2273 checked_jni_GetDirectBufferAddress,
2274 checked_jni_GetDirectBufferCapacity,
2275
2276 // New 1.6 Features
2277
2278 checked_jni_GetObjectRefType,
2279
2280 // Module Features
2281
2282 checked_jni_GetModule,
2283
2284 // Virtual threads
2285
2286 checked_jni_IsVirtualThread
2287 };
2288
2289
2290 // Returns the function structure
2291 struct JNINativeInterface_* jni_functions_check() {
2292
2293 unchecked_jni_NativeInterface = jni_functions_nocheck();
2294
2295 // make sure the last pointer in the checked table is not null, indicating
2296 // an addition to the JNINativeInterface_ structure without initializing
2297 // it in the checked table.
2298 debug_only(int *lastPtr = (int *)((char *)&checked_jni_NativeInterface + \
2299 sizeof(*unchecked_jni_NativeInterface) - sizeof(char *));)
2300 assert(*lastPtr != 0,
2301 "Mismatched JNINativeInterface tables, check for new entries");
2302
2303 // with -verbose:jni this message will print
2304 log_debug(jni, resolve)("Checked JNI functions are being used to validate JNI usage");
2305
2306 return &checked_jni_NativeInterface;
2307 }