1 /*
2 * Copyright (c) 2012, 2022, 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 <new>
27 #include "cds.h"
28 #include "cds/archiveHeapLoader.hpp"
29 #include "cds/cdsConstants.hpp"
30 #include "cds/filemap.hpp"
31 #include "cds/heapShared.hpp"
32 #include "cds/metaspaceShared.hpp"
33 #include "classfile/classLoaderDataGraph.hpp"
34 #include "classfile/javaClasses.inline.hpp"
35 #include "classfile/modules.hpp"
36 #include "classfile/protectionDomainCache.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/codeCache.hpp"
42 #include "compiler/compilationPolicy.hpp"
43 #include "compiler/directivesParser.hpp"
44 #include "compiler/methodMatcher.hpp"
45 #include "gc/shared/concurrentGCBreakpoints.hpp"
46 #include "gc/shared/gcConfig.hpp"
47 #include "gc/shared/gcLocker.inline.hpp"
48 #include "gc/shared/genArguments.hpp"
49 #include "gc/shared/genCollectedHeap.hpp"
50 #include "jvmtifiles/jvmtiEnv.hpp"
51 #include "logging/log.hpp"
52 #include "memory/iterator.hpp"
53 #include "memory/metadataFactory.hpp"
54 #include "memory/iterator.inline.hpp"
55 #include "memory/metaspace/testHelpers.hpp"
56 #include "memory/metaspaceUtils.hpp"
57 #include "memory/oopFactory.hpp"
58 #include "memory/resourceArea.hpp"
59 #include "memory/universe.hpp"
60 #include "oops/array.hpp"
61 #include "oops/compressedOops.hpp"
62 #include "oops/compressedOops.inline.hpp"
63 #include "oops/constantPool.inline.hpp"
64 #include "oops/klass.inline.hpp"
65 #include "oops/method.inline.hpp"
66 #include "oops/objArrayKlass.hpp"
67 #include "oops/objArrayOop.inline.hpp"
68 #include "oops/oop.inline.hpp"
69 #include "oops/objArrayOop.inline.hpp"
70 #include "oops/typeArrayOop.inline.hpp"
71 #include "prims/resolvedMethodTable.hpp"
72 #include "prims/wbtestmethods/parserTests.hpp"
73 #include "prims/whitebox.inline.hpp"
74 #include "runtime/arguments.hpp"
75 #include "runtime/atomic.hpp"
76 #include "runtime/deoptimization.hpp"
77 #include "runtime/fieldDescriptor.inline.hpp"
78 #include "runtime/flags/jvmFlag.hpp"
79 #include "runtime/flags/jvmFlagAccess.hpp"
80 #include "runtime/frame.inline.hpp"
81 #include "runtime/handles.inline.hpp"
82 #include "runtime/handshake.hpp"
83 #include "runtime/interfaceSupport.inline.hpp"
84 #include "runtime/javaCalls.hpp"
85 #include "runtime/javaThread.inline.hpp"
86 #include "runtime/jniHandles.inline.hpp"
87 #include "runtime/os.hpp"
88 #include "runtime/stackFrameStream.inline.hpp"
89 #include "runtime/synchronizer.hpp"
90 #include "runtime/threadSMR.hpp"
91 #include "runtime/vframe.hpp"
92 #include "runtime/vm_version.hpp"
93 #include "services/mallocSiteTable.hpp"
94 #include "services/memoryService.hpp"
95 #include "services/memTracker.hpp"
96 #include "utilities/align.hpp"
97 #include "utilities/debug.hpp"
98 #include "utilities/elfFile.hpp"
99 #include "utilities/exceptions.hpp"
100 #include "utilities/macros.hpp"
101 #include "utilities/nativeCallStack.hpp"
102 #include "utilities/ostream.hpp"
103 #if INCLUDE_G1GC
104 #include "gc/g1/g1Arguments.hpp"
105 #include "gc/g1/g1CollectedHeap.inline.hpp"
106 #include "gc/g1/g1ConcurrentMark.hpp"
107 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
108 #include "gc/g1/heapRegionManager.hpp"
109 #include "gc/g1/heapRegionRemSet.inline.hpp"
110 #endif // INCLUDE_G1GC
111 #if INCLUDE_PARALLELGC
112 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
113 #endif // INCLUDE_PARALLELGC
114 #if INCLUDE_JVMCI
115 #include "jvmci/jvmciEnv.hpp"
116 #include "jvmci/jvmciRuntime.hpp"
117 #endif
118
119 #ifdef LINUX
120 #include "osContainer_linux.hpp"
121 #include "cgroupSubsystem_linux.hpp"
122 #endif
123
124 #define SIZE_T_MAX_VALUE ((size_t) -1)
125
126 #define CHECK_JNI_EXCEPTION_(env, value) \
127 do { \
128 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
129 THREAD->clear_pending_jni_exception_check(); \
130 if (HAS_PENDING_EXCEPTION) { \
131 return(value); \
132 } \
133 } while (0)
134
135 #define CHECK_JNI_EXCEPTION(env) \
136 do { \
137 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
138 THREAD->clear_pending_jni_exception_check(); \
139 if (HAS_PENDING_EXCEPTION) { \
140 return; \
141 } \
142 } while (0)
143
144 bool WhiteBox::_used = false;
145 volatile bool WhiteBox::compilation_locked = false;
146
147 class VM_WhiteBoxOperation : public VM_Operation {
148 public:
149 VM_WhiteBoxOperation() { }
150 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
151 bool allow_nested_vm_operations() const { return true; }
152 };
153
154
155 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
156 return (jlong)(void*)JNIHandles::resolve(obj);
157 WB_END
158
159 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
160 return heapOopSize;
161 WB_END
162
163 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
164 return os::vm_page_size();
165 WB_END
166
167 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
168 return os::vm_allocation_granularity();
169 WB_END
170
171 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
172 return os::large_page_size();
173 WB_END
174
175 class WBIsKlassAliveClosure : public LockedClassesDo {
176 Symbol* _name;
177 int _count;
178 public:
179 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
180
181 void do_klass(Klass* k) {
182 Symbol* ksym = k->name();
183 if (ksym->fast_compare(_name) == 0) {
184 _count++;
185 } else if (k->is_instance_klass()) {
186 // Need special handling for hidden classes because the JVM
187 // appends "+<hex-address>" to hidden class names.
188 InstanceKlass *ik = InstanceKlass::cast(k);
189 if (ik->is_hidden()) {
190 ResourceMark rm;
191 char* k_name = ksym->as_C_string();
192 // Find the first '+' char and truncate the string at that point.
193 // NOTE: This will not work correctly if the original hidden class
194 // name contains a '+'.
195 char* plus_char = strchr(k_name, '+');
196 if (plus_char != NULL) {
197 *plus_char = 0;
198 char* c_name = _name->as_C_string();
199 if (strcmp(c_name, k_name) == 0) {
200 _count++;
201 }
202 }
203 }
204 }
205 }
206
207 int count() const {
208 return _count;
209 }
210 };
211
212 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
213 oop h_name = JNIHandles::resolve(name);
214 if (h_name == NULL) return false;
215 Symbol* sym = java_lang_String::as_symbol(h_name);
216 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
217
218 WBIsKlassAliveClosure closure(sym);
219 ClassLoaderDataGraph::classes_do(&closure);
220
221 // Return the count of alive classes with this name.
222 return closure.count();
223 WB_END
224
225 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
226 oop h_name = JNIHandles::resolve(name);
227 if (h_name == NULL) return false;
228 Symbol* sym = java_lang_String::as_symbol(h_name);
229 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
230 return (jint)sym->refcount();
231 WB_END
232
233
234 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
235 #if INCLUDE_JVMTI
236 ResourceMark rm;
237 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
238 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
239 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
240 assert(err == JVMTI_ERROR_NONE, "must not fail");
241 #endif
242 }
243 WB_END
244
245 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
246 #if INCLUDE_JVMTI
247 ResourceMark rm;
248 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
249 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
250 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
251 assert(err == JVMTI_ERROR_NONE, "must not fail");
252 #endif
253 }
254 WB_END
255
256
257 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
258 return (jlong)Arguments::max_heap_for_compressed_oops();
259 }
260 WB_END
261
262 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
263 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
264 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
265 MinHeapSize,
266 InitialHeapSize,
267 MaxHeapSize,
268 SpaceAlignment,
269 HeapAlignment);
270 }
271 WB_END
272
273 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
274 size_t granularity = os::vm_allocation_granularity();
275 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
276 VirtualSpace vs;
277 vs.initialize(rhs, 50 * granularity);
278
279 // Check if constraints are complied
280 if (!( UseCompressedOops && rhs.base() != NULL &&
281 CompressedOops::base() != NULL &&
282 CompressedOops::use_implicit_null_checks() )) {
283 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
284 "\tUseCompressedOops is %d\n"
285 "\trhs.base() is " PTR_FORMAT "\n"
286 "\tCompressedOops::base() is " PTR_FORMAT "\n"
287 "\tCompressedOops::use_implicit_null_checks() is %d",
288 UseCompressedOops,
289 p2i(rhs.base()),
290 p2i(CompressedOops::base()),
291 CompressedOops::use_implicit_null_checks());
292 return;
293 }
294 tty->print_cr("Reading from no access area... ");
295 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
296 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
297 WB_END
298
299 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
300 size_t magnitude, size_t iterations) {
301 size_t granularity = os::vm_allocation_granularity();
302 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
303 VirtualSpace vs;
304 if (!vs.initialize(rhs, 0)) {
305 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
306 return 3;
307 }
308
309 int seed = os::random();
310 tty->print_cr("Random seed is %d", seed);
311
312 for (size_t i = 0; i < iterations; i++) {
313
314 // Whether we will shrink or grow
315 bool shrink = os::random() % 2L == 0;
316
317 // Get random delta to resize virtual space
318 size_t delta = (size_t)os::random() % magnitude;
319
320 // If we are about to shrink virtual space below zero, then expand instead
321 if (shrink && vs.committed_size() < delta) {
322 shrink = false;
323 }
324
325 // Resizing by delta
326 if (shrink) {
327 vs.shrink_by(delta);
328 } else {
329 // If expanding fails expand_by will silently return false
330 vs.expand_by(delta, true);
331 }
332 }
333 return 0;
334 }
335
336 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
337 jlong reserved_space_size, jlong magnitude, jlong iterations))
338 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
339 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
340 iterations);
341 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
342 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
343 return 1;
344 }
345
346 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
347 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
348 if (sizeof(size_t) < sizeof(jlong)) {
349 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
350 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
351 || iterations > size_t_max_value) {
352 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
353 return 2;
354 }
355 }
356
357 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
358 (size_t) magnitude, (size_t) iterations);
359 WB_END
360
361 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
362 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
363 WB_END
364
365 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
366 #if INCLUDE_JVMCI
367 if (EnableJVMCI) {
368 JVMCIEnv jvmciEnv(thread, env, __FILE__, __LINE__);
369 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
370 }
371 #endif
372 return false;
373 WB_END
374
375 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
376 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
377 WB_END
378
379 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
380 return GCConfig::is_gc_selected_ergonomically();
381 WB_END
382
383 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
384 oop p = JNIHandles::resolve(obj);
385 #if INCLUDE_G1GC
386 if (UseG1GC) {
387 G1CollectedHeap* g1h = G1CollectedHeap::heap();
388 const HeapRegion* hr = g1h->heap_region_containing(p);
389 return !(hr->is_young());
390 }
391 #endif
392 #if INCLUDE_PARALLELGC
393 if (UseParallelGC) {
394 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
395 return !psh->is_in_young(p);
396 }
397 #endif
398 #if INCLUDE_ZGC
399 if (UseZGC) {
400 return Universe::heap()->is_in(p);
401 }
402 #endif
403 #if INCLUDE_SHENANDOAHGC
404 if (UseShenandoahGC) {
405 return Universe::heap()->is_in(p);
406 }
407 #endif
408 GenCollectedHeap* gch = GenCollectedHeap::heap();
409 return !gch->is_in_young(p);
410 WB_END
411
412 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
413 oop p = JNIHandles::resolve(obj);
414 return p->size() * HeapWordSize;
415 WB_END
416
417 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
418 return (jlong)SpaceAlignment;
419 WB_END
420
421 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
422 return (jlong)HeapAlignment;
423 WB_END
424
425 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
426 return Universe::heap()->supports_concurrent_gc_breakpoints();
427 WB_END
428
429 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
430 ConcurrentGCBreakpoints::acquire_control();
431 WB_END
432
433 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
434 ConcurrentGCBreakpoints::release_control();
435 WB_END
436
437 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
438 ConcurrentGCBreakpoints::run_to_idle();
439 WB_END
440
441 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
442 Handle h_name(THREAD, JNIHandles::resolve(at));
443 ResourceMark rm;
444 const char* c_name = java_lang_String::as_utf8_string(h_name());
445 return ConcurrentGCBreakpoints::run_to(c_name);
446 WB_END
447
448 #if INCLUDE_G1GC
449
450 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
451 if (UseG1GC) {
452 G1CollectedHeap* g1h = G1CollectedHeap::heap();
453 oop result = JNIHandles::resolve(obj);
454 const HeapRegion* hr = g1h->heap_region_containing(result);
455 return hr->is_humongous();
456 }
457 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
458 WB_END
459
460 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
461 if (UseG1GC) {
462 G1CollectedHeap* g1h = G1CollectedHeap::heap();
463 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
464 return hr->is_humongous();
465 }
466 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
467 WB_END
468
469 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
470 if (UseG1GC) {
471 G1CollectedHeap* g1h = G1CollectedHeap::heap();
472 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
473 return hr->is_free();
474 }
475 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
476 WB_END
477
478 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
479 if (UseG1GC) {
480 G1CollectedHeap* g1h = G1CollectedHeap::heap();
481 size_t nr = g1h->max_regions();
482 return (jlong)nr;
483 }
484 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
485 WB_END
486
487 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
488 if (UseG1GC) {
489 G1CollectedHeap* g1h = G1CollectedHeap::heap();
490 size_t nr = g1h->num_free_regions();
491 return (jlong)nr;
492 }
493 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
494 WB_END
495
496 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
497 if (UseG1GC) {
498 G1CollectedHeap* g1h = G1CollectedHeap::heap();
499 return g1h->concurrent_mark()->cm_thread()->in_progress();
500 }
501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
502 WB_END
503
504 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
505 if (UseG1GC) {
506 G1CollectedHeap* g1h = G1CollectedHeap::heap();
507 if (!g1h->concurrent_mark()->cm_thread()->in_progress()) {
508 g1h->collect(GCCause::_wb_conc_mark);
509 return true;
510 }
511 return false;
512 }
513 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
514 WB_END
515
516 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
517 if (UseG1GC) {
518 return (jint)HeapRegion::GrainBytes;
519 }
520 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
521 WB_END
522
523 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
524 if (UseG1GC) {
525 return G1CollectedHeap::heap()->has_uncommittable_regions();
526 }
527 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
528 WB_END
529
530 #endif // INCLUDE_G1GC
531
532 #if INCLUDE_PARALLELGC
533
534 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
535 if (UseParallelGC) {
536 return GenAlignment;
537 }
538 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
539 WB_END
540
541 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
542 if (UseParallelGC) {
543 return GenAlignment;
544 }
545 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
546 WB_END
547
548 #endif // INCLUDE_PARALLELGC
549
550 #if INCLUDE_G1GC
551
552 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
553 if (UseG1GC) {
554 ResourceMark rm(THREAD);
555 G1CollectedHeap* g1h = G1CollectedHeap::heap();
556 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
557 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
558 return JNIHandles::make_local(THREAD, h());
559 }
560 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
561 WB_END
562
563 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
564 if (UseG1GC) {
565 G1NUMA* numa = G1NUMA::numa();
566 return (jint)numa->num_active_nodes();
567 }
568 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
569 WB_END
570
571 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
572 if (UseG1GC) {
573 G1NUMA* numa = G1NUMA::numa();
574 int num_node_ids = (int)numa->num_active_nodes();
575 const int* node_ids = numa->node_ids();
576
577 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
578 for (int i = 0; i < num_node_ids; i++) {
579 result->int_at_put(i, (jint)node_ids[i]);
580 }
581 return (jintArray) JNIHandles::make_local(THREAD, result);
582 }
583 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
584 WB_END
585
586 class OldRegionsLivenessClosure: public HeapRegionClosure {
587
588 private:
589 const int _liveness;
590 size_t _total_count;
591 size_t _total_memory;
592 size_t _total_memory_to_free;
593
594 public:
595 OldRegionsLivenessClosure(int liveness) :
596 _liveness(liveness),
597 _total_count(0),
598 _total_memory(0),
599 _total_memory_to_free(0) { }
600
601 size_t total_count() { return _total_count; }
602 size_t total_memory() { return _total_memory; }
603 size_t total_memory_to_free() { return _total_memory_to_free; }
604
605 bool do_heap_region(HeapRegion* r) {
606 if (r->is_old()) {
607 size_t live = r->live_bytes();
608 size_t size = r->used();
609 size_t reg_size = HeapRegion::GrainBytes;
610 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
611 _total_memory += size;
612 ++_total_count;
613 if (size == reg_size) {
614 // We don't include non-full regions since they are unlikely included in mixed gc
615 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
616 _total_memory_to_free += size - live;
617 }
618 }
619 }
620 return false;
621 }
622 };
623
624
625 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
626 if (!UseG1GC) {
627 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
628 }
629 if (liveness < 0) {
630 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
631 }
632
633 G1CollectedHeap* g1h = G1CollectedHeap::heap();
634 OldRegionsLivenessClosure rli(liveness);
635 g1h->heap_region_iterate(&rli);
636
637 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
638 result->long_at_put(0, rli.total_count());
639 result->long_at_put(1, rli.total_memory());
640 result->long_at_put(2, rli.total_memory_to_free());
641 return (jlongArray) JNIHandles::make_local(THREAD, result);
642 WB_END
643
644 #endif // INCLUDE_G1GC
645
646 // Alloc memory using the test memory type so that we can use that to see if
647 // NMT picks it up correctly
648 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
649 jlong addr = 0;
650 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
651 return addr;
652 WB_END
653
654 // Alloc memory with pseudo call stack. The test can create pseudo malloc
655 // allocation site to stress the malloc tracking.
656 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
657 address pc = (address)(size_t)pseudo_stack;
658 NativeCallStack stack(&pc, 1);
659 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
660 WB_END
661
662 // Alloc memory with pseudo call stack and specific memory type.
663 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
664 address pc = (address)(size_t)pseudo_stack;
665 NativeCallStack stack(&pc, 1);
666 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
667 WB_END
668
669 // Free the memory allocated by NMTAllocTest
670 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
671 os::free((void*)(uintptr_t)mem);
672 WB_END
673
674 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
675 jlong addr = 0;
676
677 addr = (jlong)(uintptr_t)os::reserve_memory(size);
678 MemTracker::record_virtual_memory_type((address)addr, mtTest);
679
680 return addr;
681 WB_END
682
683 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
684 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
685 MemTracker::record_virtual_memory_type((address)addr, mtTest);
686
687 return addr;
688 WB_END
689
690 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
691 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
692 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
693 WB_END
694
695 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
696 os::uncommit_memory((char *)(uintptr_t)addr, size);
697 WB_END
698
699 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
700 os::release_memory((char *)(uintptr_t)addr, size);
701 WB_END
702
703 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
704 int hash_size = MallocSiteTable::hash_buckets();
705 assert(hash_size > 0, "NMT hash_size should be > 0");
706 return (jint)hash_size;
707 WB_END
708
709 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
710 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
711 return (jlong)arena;
712 WB_END
713
714 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
715 Arena* a = (Arena*)arena;
716 delete a;
717 WB_END
718
719 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
720 Arena* a = (Arena*)arena;
721 a->Amalloc(size_t(size));
722 WB_END
723
724 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
725 assert(method != NULL, "method should not be null");
726 ThreadToNativeFromVM ttn(thread);
727 return env->FromReflectedMethod(method);
728 }
729
730 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
731 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
732 private:
733 int _result;
734 const bool _make_not_entrant;
735 public:
736 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
737 _result(0), _make_not_entrant(make_not_entrant) { }
738 int result() const { return _result; }
739
740 void doit() {
741 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
742 if (t->has_last_Java_frame()) {
743 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
744 frame* f = fst.current();
745 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
746 Deoptimization::deoptimize(t, *f);
747 if (_make_not_entrant) {
748 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
749 assert(cm != NULL, "sanity check");
750 cm->make_not_entrant();
751 }
752 ++_result;
753 }
754 }
755 }
756 }
757 }
758 };
759
760 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
761 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
762 VMThread::execute(&op);
763 return op.result();
764 WB_END
765
766 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
767 bool result = false;
768 if (thread->has_last_Java_frame()) {
769 RegisterMap reg_map(thread,
770 RegisterMap::UpdateMap::include,
771 RegisterMap::ProcessFrames::include,
772 RegisterMap::WalkContinuation::skip);
773 javaVFrame *jvf = thread->last_java_vframe(®_map);
774 for (jint d = 0; d < depth && jvf != NULL; d++) {
775 jvf = jvf->java_sender();
776 }
777 result = jvf != NULL && jvf->fr().is_deoptimized_frame();
778 }
779 return result;
780 WB_END
781
782 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
783 CodeCache::mark_all_nmethods_for_deoptimization();
784 Deoptimization::deoptimize_all_marked();
785 WB_END
786
787 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
788 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
789 int result = 0;
790 CHECK_JNI_EXCEPTION_(env, result);
791 MutexLocker mu(Compile_lock);
792 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
793 if (is_osr) {
794 result += mh->mark_osr_nmethods();
795 } else if (mh->code() != NULL) {
796 mh->code()->mark_for_deoptimization();
797 ++result;
798 }
799 result += CodeCache::mark_for_deoptimization(mh());
800 if (result > 0) {
801 Deoptimization::deoptimize_all_marked();
802 }
803 return result;
804 WB_END
805
806 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
807 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
808 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
809 MutexLocker mu(Compile_lock);
810 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
811 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
812 if (code == NULL) {
813 return JNI_FALSE;
814 }
815 return !code->is_marked_for_deoptimization();
816 WB_END
817
818 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
819 if (comp == NULL) {
820 return true;
821 }
822 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
823 if (directive->ExcludeOption) {
824 return true;
825 }
826 return false;
827 }
828
829 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
830 if (is_osr) {
831 return CompilationPolicy::can_be_osr_compiled(mh, level);
832 } else {
833 return CompilationPolicy::can_be_compiled(mh, level);
834 }
835 }
836
837 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
838 if (method == NULL || comp_level > CompilationPolicy::highest_compile_level()) {
839 return false;
840 }
841 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
842 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
843 MutexLocker mu(Compile_lock);
844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
845
846 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
847 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
848 // to exclude a compilation of 'method'.
849 if (comp_level == CompLevel_any) {
850 // Both compilers could have ExcludeOption set. Check all combinations.
851 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
852 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
853 if (excluded_c1 && excluded_c2) {
854 // Compilation of 'method' excluded by both compilers.
855 return false;
856 }
857
858 if (excluded_c1) {
859 // C1 only has ExcludeOption set: Check if compilable with C2.
860 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
861 } else if (excluded_c2) {
862 // C2 only has ExcludeOption set: Check if compilable with C1.
863 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
864 }
865 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
866 // Compilation of 'method' excluded by compiler used for 'comp_level'.
867 return false;
868 }
869
870 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
871 WB_END
872
873 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
874 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
875 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
876 MutexLocker mu(Compile_lock);
877 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
878 return mh->queued_for_compilation();
879 WB_END
880
881 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
882 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
883 return false; // Intrinsic is not available on a non-existent compilation level.
884 }
885 jmethodID method_id, compilation_context_id;
886 method_id = reflected_method_to_jmid(thread, env, method);
887 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
888 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
889
890 DirectiveSet* directive;
891 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
892 assert(comp != NULL, "compiler not available");
893 if (compilation_context != NULL) {
894 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
895 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
896 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
897 directive = DirectivesStack::getMatchingDirective(cch, comp);
898 } else {
899 // Calling with NULL matches default directive
900 directive = DirectivesStack::getDefaultDirective(comp);
901 }
902 bool result = comp->is_intrinsic_available(mh, directive);
903 DirectivesStack::release(directive);
904 return result;
905 WB_END
906
907 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
908 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
909 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
910 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
911 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
912 return (code != NULL ? code->comp_level() : CompLevel_none);
913 WB_END
914
915 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
916 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
917 CHECK_JNI_EXCEPTION(env);
918 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
919 if (is_osr) {
920 mh->set_not_osr_compilable("WhiteBox", comp_level);
921 } else {
922 mh->set_not_compilable("WhiteBox", comp_level);
923 }
924 WB_END
925
926 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
927 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
928 CHECK_JNI_EXCEPTION_(env, 0);
929 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
930 uint cnt = 0;
931 MethodData* mdo = mh->method_data();
932 if (mdo != NULL) {
933 cnt = mdo->decompile_count();
934 }
935 return cnt;
936 WB_END
937
938 // Get the trap count of a method for a specific reason. If the trap count for
939 // that reason did overflow, this includes the overflow trap count of the method.
940 // If 'reason' is NULL, the sum of the traps for all reasons will be returned.
941 // This number includes the overflow trap count if the trap count for any reason
942 // did overflow.
943 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
944 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
945 CHECK_JNI_EXCEPTION_(env, 0);
946 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
947 uint cnt = 0;
948 MethodData* mdo = mh->method_data();
949 if (mdo != NULL) {
950 ResourceMark rm(THREAD);
951 char* reason_str = (reason_obj == NULL) ?
952 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
953 bool overflow = false;
954 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
955 if (reason_str != NULL && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
956 cnt = mdo->trap_count(reason);
957 // Count in the overflow trap count on overflow
958 if (cnt == (uint)-1) {
959 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
960 }
961 break;
962 } else if (reason_str == NULL) {
963 uint c = mdo->trap_count(reason);
964 if (c == (uint)-1) {
965 c = mdo->trap_count_limit();
966 if (!overflow) {
967 // Count overflow trap count just once
968 overflow = true;
969 c += mdo->overflow_trap_count();
970 }
971 }
972 cnt += c;
973 }
974 }
975 }
976 return cnt;
977 WB_END
978
979 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
980 if (reason_obj == NULL && action_obj == NULL) {
981 return Deoptimization::total_deoptimization_count();
982 }
983 ResourceMark rm(THREAD);
984 const char *reason_str = (reason_obj == NULL) ?
985 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
986 const char *action_str = (action_obj == NULL) ?
987 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
988
989 return Deoptimization::deoptimization_count(reason_str, action_str);
990 WB_END
991
992 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
993 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
994 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
995 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
996 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
997 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
998 WB_END
999
1000 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1001 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1002 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1003 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1004 bool result = mh->dont_inline();
1005 mh->set_dont_inline(value == JNI_TRUE);
1006 return result;
1007 WB_END
1008
1009 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1010 if (comp_level == CompLevel_any) {
1011 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1012 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1013 } else {
1014 return CompileBroker::queue_size(comp_level);
1015 }
1016 WB_END
1017
1018 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1019 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1020 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1021 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1022 bool result = mh->force_inline();
1023 mh->set_force_inline(value == JNI_TRUE);
1024 return result;
1025 WB_END
1026
1027 #ifdef LINUX
1028 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1029 const char* proc_self_cgroup,
1030 const char* proc_self_mountinfo,
1031 u1* cg_flags) {
1032 CgroupInfo cg_infos[CG_INFO_LENGTH];
1033 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1034 proc_self_cgroup,
1035 proc_self_mountinfo, cg_flags);
1036 }
1037 #endif
1038
1039 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1040 // Screen for unavailable/bad comp level or null method
1041 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1042 if (method == NULL) {
1043 tty->print_cr("WB error: request to compile NULL method");
1044 return false;
1045 }
1046 if (comp_level > CompilationPolicy::highest_compile_level()) {
1047 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1048 return false;
1049 }
1050 if (comp == NULL) {
1051 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1052 return false;
1053 }
1054
1055 // Check if compilation is blocking
1056 methodHandle mh(THREAD, method);
1057 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1058 bool is_blocking = !directive->BackgroundCompilationOption;
1059 DirectivesStack::release(directive);
1060
1061 // Compile method and check result
1062 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1063 MutexLocker mu(THREAD, Compile_lock);
1064 bool is_queued = mh->queued_for_compilation();
1065 if ((!is_blocking && is_queued) || nm != NULL) {
1066 return true;
1067 }
1068 // Check code again because compilation may be finished before Compile_lock is acquired.
1069 if (bci == InvocationEntryBci) {
1070 CompiledMethod* code = mh->code();
1071 if (code != NULL && code->as_nmethod_or_null() != NULL) {
1072 return true;
1073 }
1074 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != NULL) {
1075 return true;
1076 }
1077 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1078 mh->print_short_name(tty);
1079 tty->cr();
1080 if (is_blocking && is_queued) {
1081 tty->print_cr("WB error: blocking compilation is still in queue!");
1082 }
1083 return false;
1084 }
1085
1086 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1087 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1088 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1089 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1090 WB_END
1091
1092 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1093 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1094 Method* clinit = ik->class_initializer();
1095 if (clinit == NULL || clinit->method_holder()->is_not_initialized()) {
1096 return false;
1097 }
1098 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1099 WB_END
1100
1101 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1102 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1103 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1104
1105 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1106 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1107 bool result = directive->PrintAssemblyOption;
1108 DirectivesStack::release(directive);
1109
1110 return result;
1111 WB_END
1112
1113 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1114 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1115 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1116
1117 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1118
1119 ResourceMark rm(THREAD);
1120 const char* error_msg = NULL;
1121 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1122 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1123
1124 if (m == NULL) {
1125 assert(error_msg != NULL, "Always have an error message");
1126 tty->print_cr("Got error: %s", error_msg);
1127 return -1; // Pattern failed
1128 }
1129
1130 // Pattern works - now check if it matches
1131 int result;
1132 if (m->match(mh, InlineMatcher::force_inline)) {
1133 result = 2; // Force inline match
1134 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1135 result = 1; // Dont inline match
1136 } else {
1137 result = 0; // No match
1138 }
1139 delete m;
1140 return result;
1141 WB_END
1142
1143 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1144 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1145 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1146
1147 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1148
1149 ResourceMark rm;
1150 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1151
1152 const char* error_msg = NULL;
1153
1154 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1155 if (m == NULL) {
1156 assert(error_msg != NULL, "Must have error_msg");
1157 tty->print_cr("Got error: %s", error_msg);
1158 return -1;
1159 }
1160
1161 // Pattern works - now check if it matches
1162 int result = m->matches(mh);
1163 delete m;
1164 assert(result == 0 || result == 1, "Result out of range");
1165 return result;
1166 WB_END
1167
1168 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1169 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1170 CHECK_JNI_EXCEPTION(env);
1171 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1172
1173 MethodData* mdo = mh->method_data();
1174 if (mdo == NULL) {
1175 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1176 mdo = mh->method_data();
1177 }
1178 mdo->init();
1179 InvocationCounter* icnt = mdo->invocation_counter();
1180 InvocationCounter* bcnt = mdo->backedge_counter();
1181 // set i-counter according to CompilationPolicy::is_method_profiled
1182 icnt->set(Tier4MinInvocationThreshold);
1183 bcnt->set(Tier4CompileThreshold);
1184 WB_END
1185
1186 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1187 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1188 CHECK_JNI_EXCEPTION(env);
1189 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1190 MutexLocker mu(THREAD, Compile_lock);
1191 MethodData* mdo = mh->method_data();
1192 MethodCounters* mcs = mh->method_counters();
1193
1194 if (mdo != NULL) {
1195 mdo->init();
1196 ResourceMark rm(THREAD);
1197 int arg_count = mdo->method()->size_of_parameters();
1198 for (int i = 0; i < arg_count; i++) {
1199 mdo->set_arg_modified(i, 0);
1200 }
1201 MutexLocker mu(THREAD, mdo->extra_data_lock());
1202 mdo->clean_method_data(/*always_clean*/true);
1203 }
1204
1205 mh->clear_not_c1_compilable();
1206 mh->clear_not_c2_compilable();
1207 mh->clear_not_c2_osr_compilable();
1208 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1209 if (mcs != NULL) {
1210 mcs->clear_counters();
1211 }
1212 WB_END
1213
1214 template <typename T, int type_enum>
1215 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1216 if (name == NULL) {
1217 return false;
1218 }
1219 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1220 const char* flag_name = env->GetStringUTFChars(name, NULL);
1221 CHECK_JNI_EXCEPTION_(env, false);
1222 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1223 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1224 env->ReleaseStringUTFChars(name, flag_name);
1225 return (result == JVMFlag::SUCCESS);
1226 }
1227
1228 template <typename T, int type_enum>
1229 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1230 if (name == NULL) {
1231 return false;
1232 }
1233 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1234 const char* flag_name = env->GetStringUTFChars(name, NULL);
1235 CHECK_JNI_EXCEPTION_(env, false);
1236 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1237 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1238 env->ReleaseStringUTFChars(name, flag_name);
1239 return (result == JVMFlag::SUCCESS);
1240 }
1241
1242 template <typename T>
1243 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1244 ResourceMark rm(thread);
1245 jclass clazz = env->FindClass(name->as_C_string());
1246 CHECK_JNI_EXCEPTION_(env, NULL);
1247 jmethodID methodID = env->GetStaticMethodID(clazz,
1248 vmSymbols::valueOf_name()->as_C_string(),
1249 sig->as_C_string());
1250 CHECK_JNI_EXCEPTION_(env, NULL);
1251 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1252 CHECK_JNI_EXCEPTION_(env, NULL);
1253 return result;
1254 }
1255
1256 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1257 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1258 }
1259 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1260 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1261 }
1262 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1263 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1264 }
1265 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1266 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1267 }*/
1268 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1269 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1270 }
1271
1272 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1273 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1274 const char* flag_name = env->GetStringUTFChars(name, NULL);
1275 CHECK_JNI_EXCEPTION_(env, NULL);
1276 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1277 env->ReleaseStringUTFChars(name, flag_name);
1278 return result;
1279 }
1280
1281 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1282 const JVMFlag* flag = getVMFlag(thread, env, name);
1283 return (flag != NULL) && flag->is_constant_in_binary();
1284 WB_END
1285
1286 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1287 const JVMFlag* flag = getVMFlag(thread, env, name);
1288 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1289 WB_END
1290
1291 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1292 bool result;
1293 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1294 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1295 return booleanBox(thread, env, result);
1296 }
1297 return NULL;
1298 WB_END
1299
1300 template <typename T, int type_enum>
1301 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1302 T result;
1303 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1304 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1305 return longBox(thread, env, result);
1306 }
1307 return NULL;
1308 }
1309
1310 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1311 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1312 WB_END
1313
1314 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1315 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1316 WB_END
1317
1318 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1319 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1320 WB_END
1321
1322 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1323 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1324 WB_END
1325
1326 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1327 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1328 WB_END
1329
1330 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1331 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1332 WB_END
1333
1334 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1335 double result;
1336 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1337 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1338 return doubleBox(thread, env, result);
1339 }
1340 return NULL;
1341 WB_END
1342
1343 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1344 ccstr ccstrResult;
1345 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1346 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1347 jstring result = env->NewStringUTF(ccstrResult);
1348 CHECK_JNI_EXCEPTION_(env, NULL);
1349 return result;
1350 }
1351 return NULL;
1352 WB_END
1353
1354 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1355 bool result = value == JNI_TRUE ? true : false;
1356 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1357 WB_END
1358
1359 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1360 int result = value;
1361 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1362 WB_END
1363
1364 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1365 uint result = value;
1366 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1367 WB_END
1368
1369 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1370 intx result = value;
1371 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1372 WB_END
1373
1374 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1375 uintx result = value;
1376 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1377 WB_END
1378
1379 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1380 uint64_t result = value;
1381 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1382 WB_END
1383
1384 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1385 size_t result = value;
1386 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1387 WB_END
1388
1389 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1390 double result = value;
1391 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1392 WB_END
1393
1394 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1395 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1396 const char* ccstrValue;
1397 if (value == NULL) {
1398 ccstrValue = NULL;
1399 }
1400 else {
1401 ccstrValue = env->GetStringUTFChars(value, NULL);
1402 CHECK_JNI_EXCEPTION(env);
1403 }
1404 {
1405 ccstr param = ccstrValue;
1406 ThreadInVMfromNative ttvfn(thread); // back to VM
1407 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1408 assert(param == NULL, "old value is freed automatically and not returned");
1409 }
1410 }
1411 if (value != NULL) {
1412 env->ReleaseStringUTFChars(value, ccstrValue);
1413 }
1414 WB_END
1415
1416 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1417 WhiteBox::compilation_locked = true;
1418 WB_END
1419
1420 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1421 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1422 WhiteBox::compilation_locked = false;
1423 mo.notify_all();
1424 WB_END
1425
1426 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1427 ResourceMark rm(THREAD);
1428 int len;
1429 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1430 return (StringTable::lookup(name, len) != NULL);
1431 WB_END
1432
1433 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1434 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1435 Universe::heap()->collect(GCCause::_wb_full_gc);
1436 #if INCLUDE_G1GC
1437 if (UseG1GC) {
1438 // Needs to be cleared explicitly for G1
1439 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1440 }
1441 #endif // INCLUDE_G1GC
1442 WB_END
1443
1444 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1445 Universe::heap()->collect(GCCause::_wb_young_gc);
1446 WB_END
1447
1448 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1449 // static+volatile in order to force the read to happen
1450 // (not be eliminated by the compiler)
1451 static char c;
1452 static volatile char* p;
1453
1454 p = os::reserve_memory(os::vm_allocation_granularity());
1455 if (p == NULL) {
1456 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1457 }
1458
1459 c = *p;
1460 WB_END
1461
1462 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1463 const char* features = VM_Version::features_string();
1464 ThreadToNativeFromVM ttn(thread);
1465 jstring features_string = env->NewStringUTF(features);
1466
1467 CHECK_JNI_EXCEPTION_(env, NULL);
1468
1469 return features_string;
1470 WB_END
1471
1472 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1473 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1474 return CodeCache::get_code_heap(code)->code_blob_type();
1475 }
1476
1477 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1478 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1479 return CodeCache::get_code_heap(blob_type);
1480 }
1481
1482 struct CodeBlobStub {
1483 CodeBlobStub(const CodeBlob* blob) :
1484 name(os::strdup(blob->name())),
1485 size(blob->size()),
1486 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1487 address((jlong) blob) { }
1488 ~CodeBlobStub() { os::free((void*) name); }
1489 const char* const name;
1490 const jint size;
1491 const jint blob_type;
1492 const jlong address;
1493 };
1494
1495 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1496 ResourceMark rm;
1497 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1498 CHECK_JNI_EXCEPTION_(env, NULL);
1499 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1500
1501 jstring name = env->NewStringUTF(cb->name);
1502 CHECK_JNI_EXCEPTION_(env, NULL);
1503 env->SetObjectArrayElement(result, 0, name);
1504
1505 jobject obj = integerBox(thread, env, cb->size);
1506 CHECK_JNI_EXCEPTION_(env, NULL);
1507 env->SetObjectArrayElement(result, 1, obj);
1508
1509 obj = integerBox(thread, env, cb->blob_type);
1510 CHECK_JNI_EXCEPTION_(env, NULL);
1511 env->SetObjectArrayElement(result, 2, obj);
1512
1513 obj = longBox(thread, env, cb->address);
1514 CHECK_JNI_EXCEPTION_(env, NULL);
1515 env->SetObjectArrayElement(result, 3, obj);
1516
1517 return result;
1518 }
1519
1520 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1521 ResourceMark rm(THREAD);
1522 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1523 CHECK_JNI_EXCEPTION_(env, NULL);
1524 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1525 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1526 jobjectArray result = NULL;
1527 if (code == NULL) {
1528 return result;
1529 }
1530 int comp_level = code->comp_level();
1531 int insts_size = code->insts_size();
1532
1533 ThreadToNativeFromVM ttn(thread);
1534 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1535 CHECK_JNI_EXCEPTION_(env, NULL);
1536 result = env->NewObjectArray(5, clazz, NULL);
1537 if (result == NULL) {
1538 return result;
1539 }
1540
1541 CodeBlobStub stub(code);
1542 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1543 CHECK_JNI_EXCEPTION_(env, NULL);
1544 env->SetObjectArrayElement(result, 0, codeBlob);
1545
1546 jobject level = integerBox(thread, env, comp_level);
1547 CHECK_JNI_EXCEPTION_(env, NULL);
1548 env->SetObjectArrayElement(result, 1, level);
1549
1550 jbyteArray insts = env->NewByteArray(insts_size);
1551 CHECK_JNI_EXCEPTION_(env, NULL);
1552 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1553 env->SetObjectArrayElement(result, 2, insts);
1554
1555 jobject id = integerBox(thread, env, code->compile_id());
1556 CHECK_JNI_EXCEPTION_(env, NULL);
1557 env->SetObjectArrayElement(result, 3, id);
1558
1559 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1560 CHECK_JNI_EXCEPTION_(env, NULL);
1561 env->SetObjectArrayElement(result, 4, entry_point);
1562
1563 return result;
1564 WB_END
1565
1566 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1567 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1568 BufferBlob* blob;
1569 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1570 if (full_size < size) {
1571 full_size += align_up(size - full_size, oopSize);
1572 }
1573 {
1574 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1575 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1576 if (blob != NULL) {
1577 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1578 }
1579 }
1580 // Track memory usage statistic after releasing CodeCache_lock
1581 MemoryService::track_code_cache_memory_usage();
1582 return blob;
1583 }
1584
1585 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1586 if (size < 0) {
1587 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1588 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1589 }
1590 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1591 WB_END
1592
1593 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1594 if (addr == 0) {
1595 return;
1596 }
1597 BufferBlob::free((BufferBlob*) addr);
1598 WB_END
1599
1600 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1601 ResourceMark rm;
1602 GrowableArray<CodeBlobStub*> blobs;
1603 {
1604 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1605 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1606 if (heap == NULL) {
1607 return NULL;
1608 }
1609 for (CodeBlob* cb = (CodeBlob*) heap->first();
1610 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1611 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1612 new (stub) CodeBlobStub(cb);
1613 blobs.append(stub);
1614 }
1615 }
1616 ThreadToNativeFromVM ttn(thread);
1617 jobjectArray result = NULL;
1618 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1619 CHECK_JNI_EXCEPTION_(env, NULL);
1620 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1621 CHECK_JNI_EXCEPTION_(env, NULL);
1622 if (result == NULL) {
1623 return result;
1624 }
1625 int i = 0;
1626 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1627 it != blobs.end(); ++it) {
1628 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1629 CHECK_JNI_EXCEPTION_(env, NULL);
1630 env->SetObjectArrayElement(result, i, obj);
1631 CHECK_JNI_EXCEPTION_(env, NULL);
1632 ++i;
1633 }
1634 return result;
1635 WB_END
1636
1637 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1638 return CompileBroker::get_compilation_activity_mode();
1639 WB_END
1640
1641 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1642 if (addr == 0) {
1643 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1644 "WB_GetCodeBlob: addr is null");
1645 }
1646 ThreadToNativeFromVM ttn(thread);
1647 CodeBlobStub stub((CodeBlob*) addr);
1648 return codeBlob2objectArray(thread, env, &stub);
1649 WB_END
1650
1651 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1652 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1653 CHECK_JNI_EXCEPTION_(env, 0);
1654 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1655 return (jlong) mh->method_data();
1656 WB_END
1657
1658 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1659 return (jlong) thread->stack_size();
1660 WB_END
1661
1662 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1663 return (jlong) thread->stack_overflow_state()->stack_available(
1664 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1665 WB_END
1666
1667
1668 int WhiteBox::array_bytes_to_length(size_t bytes) {
1669 return Array<u1>::bytes_to_length(bytes);
1670 }
1671
1672 ///////////////
1673 // MetaspaceTestContext and MetaspaceTestArena
1674 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1675 metaspace::MetaspaceTestContext* context =
1676 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1677 return (jlong)p2i(context);
1678 WB_END
1679
1680 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1681 delete (metaspace::MetaspaceTestContext*) context;
1682 WB_END
1683
1684 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1685 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1686 context0->purge_area();
1687 WB_END
1688
1689 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1690 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1691 context0->print_on(tty);
1692 WB_END
1693
1694 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1695 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1696 return context0->committed_words();
1697 WB_END
1698
1699 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1700 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1701 return context0->used_words();
1702 WB_END
1703
1704 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1705 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1706 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1707 return (jlong)p2i(context0->create_arena(type));
1708 WB_END
1709
1710 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1711 delete (metaspace::MetaspaceTestArena*) arena;
1712 WB_END
1713
1714 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1715 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1716 MetaWord* p = arena0->allocate((size_t) word_size);
1717 return (jlong)p2i(p);
1718 WB_END
1719
1720 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1721 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1722 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1723 WB_END
1724
1725 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1726 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1727 WB_END
1728
1729 //////////////
1730
1731 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1732 if (size < 0) {
1733 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1734 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1735 }
1736
1737 oop class_loader_oop = JNIHandles::resolve(class_loader);
1738 ClassLoaderData* cld = class_loader_oop != NULL
1739 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1740 : ClassLoaderData::the_null_class_loader_data();
1741
1742 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1743
1744 return (jlong)(uintptr_t)metadata;
1745 WB_END
1746
1747 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1748 jstring version, jstring location, jobjectArray packages))
1749 Handle h_module (THREAD, JNIHandles::resolve(module));
1750 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1751 WB_END
1752
1753 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1754 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1755 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1756 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1757 WB_END
1758
1759 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1760 Handle h_module (THREAD, JNIHandles::resolve(module));
1761 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1762 WB_END
1763
1764 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1765 Handle h_module (THREAD, JNIHandles::resolve(module));
1766 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1767 WB_END
1768
1769 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1770 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1771 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1772 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1773 WB_END
1774
1775 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1776 if (inc < 0) {
1777 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1778 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1779 }
1780
1781 jlong max_size_t = (jlong) ((size_t) -1);
1782 if (inc > max_size_t) {
1783 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1784 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1785 }
1786
1787 size_t new_cap_until_GC = 0;
1788 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1789 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1790 if (!success) {
1791 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1792 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1793 "due to contention with another thread");
1794 }
1795 return (jlong) new_cap_until_GC;
1796 WB_END
1797
1798 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1799 return (jlong) MetaspaceGC::capacity_until_GC();
1800 WB_END
1801
1802 // The function is only valid when CDS is available.
1803 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1804 #if INCLUDE_CDS
1805 return (jlong)MetaspaceShared::core_region_alignment();
1806 #else
1807 ShouldNotReachHere();
1808 return 0L;
1809 #endif
1810 WB_END
1811
1812 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1813 oop obj_oop = JNIHandles::resolve(obj);
1814 return (jboolean) obj_oop->mark().has_monitor();
1815 WB_END
1816
1817 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1818 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1819 return ObjectSynchronizer::request_deflate_idle_monitors();
1820 WB_END
1821
1822 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1823 VM_ForceSafepoint force_safepoint_op;
1824 VMThread::execute(&force_safepoint_op);
1825 WB_END
1826
1827 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1828 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1829 return (jlong) ik->constants();
1830 WB_END
1831
1832 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1833 return ConstantPool::CPCACHE_INDEX_TAG;
1834 WB_END
1835
1836 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1837 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1838 ConstantPool* cp = ik->constants();
1839 if (cp->cache() == NULL) {
1840 return -1;
1841 }
1842 return cp->cache()->length();
1843 WB_END
1844
1845 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1846 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1847 ConstantPool* cp = ik->constants();
1848 if (cp->cache() == NULL) {
1849 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1850 }
1851 jint cpci = index;
1852 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1853 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1854 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1855 }
1856 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1857 return cpi;
1858 WB_END
1859
1860 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1861 return ConstantPool::encode_invokedynamic_index(index);
1862 WB_END
1863
1864 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
1865 oop aoop = JNIHandles::resolve(thing);
1866 if (!aoop->is_instance()) {
1867 return NULL;
1868 }
1869 instanceHandle ih(THREAD, (instanceOop) aoop);
1870 InstanceKlass* klass = InstanceKlass::cast(ih->klass());
1871 if (klass->nonstatic_oop_map_count() == 0) {
1872 return NULL;
1873 }
1874 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
1875 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
1876 int oop_count = 0;
1877 while (map < end) {
1878 oop_count += map->count();
1879 map++;
1880 }
1881
1882 objArrayHandle result_array =
1883 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL);
1884 map = klass->start_of_nonstatic_oop_maps();
1885 int index = 0;
1886 while (map < end) {
1887 int offset = map->offset();
1888 for (unsigned int j = 0; j < map->count(); j++) {
1889 result_array->obj_at_put(index++, ih->obj_field(offset));
1890 offset += heapOopSize;
1891 }
1892 map++;
1893 }
1894 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1895 WB_END
1896
1897 class CollectOops : public BasicOopIterateClosure {
1898 public:
1899 GrowableArray<Handle>* array;
1900
1901 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
1902 objArrayHandle result_array =
1903 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL);
1904 for (int i = 0 ; i < array->length(); i++) {
1905 result_array->obj_at_put(i, array->at(i)());
1906 }
1907 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1908 }
1909
1910 void add_oop(oop o) {
1911 Handle oh = Handle(Thread::current(), o);
1912 // Value might be oop, but JLS can't see as Object, just iterate through it...
1913 if (oh != NULL && oh->is_inline_type()) {
1914 oh->oop_iterate(this);
1915 } else {
1916 array->append(oh);
1917 }
1918 }
1919
1920 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); }
1921 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); }
1922 };
1923
1924
1925 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
1926 ResourceMark rm(thread);
1927 Handle objh(thread, JNIHandles::resolve(thing));
1928 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1929 CollectOops collectOops;
1930 collectOops.array = array;
1931 objh->oop_iterate(&collectOops);
1932 return collectOops.create_jni_result(env, THREAD);
1933 WB_END
1934
1935 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
1936 ResourceMark rm(THREAD);
1937 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1938 CollectOops collectOops;
1939 collectOops.array = array;
1940 StackFrameStream sfs(thread, false /* update */, true /* process_frames */);
1941 while (depth > 0) { // Skip the native WB API frame
1942 sfs.next();
1943 frame* f = sfs.current();
1944 f->oops_do(&collectOops, NULL, sfs.register_map());
1945 depth--;
1946 }
1947 return collectOops.create_jni_result(env, THREAD);
1948 WB_END
1949
1950
1951 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1952 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1953 VMThread::execute(&clear_ics);
1954 WB_END
1955
1956 template <typename T>
1957 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1958 assert(value != NULL, "sanity");
1959 if (method == NULL || name == NULL) {
1960 return false;
1961 }
1962 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1963 CHECK_JNI_EXCEPTION_(env, false);
1964 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1965 // can't be in VM when we call JNI
1966 ThreadToNativeFromVM ttnfv(thread);
1967 const char* flag_name = env->GetStringUTFChars(name, NULL);
1968 CHECK_JNI_EXCEPTION_(env, false);
1969 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1970 env->ReleaseStringUTFChars(name, flag_name);
1971 if (option == CompileCommand::Unknown) {
1972 return false;
1973 }
1974 if (!CompilerOracle::option_matches_type(option, *value)) {
1975 return false;
1976 }
1977 return CompilerOracle::has_option_value(mh, option, *value);
1978 }
1979
1980 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1981 bool result;
1982 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1983 // can't be in VM when we call JNI
1984 ThreadToNativeFromVM ttnfv(thread);
1985 return booleanBox(thread, env, result);
1986 }
1987 return NULL;
1988 WB_END
1989
1990 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1991 intx result;
1992 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1993 // can't be in VM when we call JNI
1994 ThreadToNativeFromVM ttnfv(thread);
1995 return longBox(thread, env, result);
1996 }
1997 return NULL;
1998 WB_END
1999
2000 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2001 uintx result;
2002 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2003 // can't be in VM when we call JNI
2004 ThreadToNativeFromVM ttnfv(thread);
2005 return longBox(thread, env, result);
2006 }
2007 return NULL;
2008 WB_END
2009
2010 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2011 double result;
2012 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2013 // can't be in VM when we call JNI
2014 ThreadToNativeFromVM ttnfv(thread);
2015 return doubleBox(thread, env, result);
2016 }
2017 return NULL;
2018 WB_END
2019
2020 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2021 ccstr ccstrResult;
2022 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2023 // can't be in VM when we call JNI
2024 ThreadToNativeFromVM ttnfv(thread);
2025 jstring result = env->NewStringUTF(ccstrResult);
2026 CHECK_JNI_EXCEPTION_(env, NULL);
2027 return result;
2028 }
2029 return NULL;
2030 WB_END
2031
2032 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2033 const char* p = Arguments::get_default_shared_archive_path();
2034 ThreadToNativeFromVM ttn(thread);
2035 jstring path_string = env->NewStringUTF(p);
2036
2037 CHECK_JNI_EXCEPTION_(env, NULL);
2038
2039 return path_string;
2040 WB_END
2041
2042 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2043 return UseSharedSpaces;
2044 WB_END
2045
2046 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2047 #if INCLUDE_CDS
2048 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2049 #else
2050 ShouldNotReachHere();
2051 return (jint)-1;
2052 #endif
2053 WB_END
2054
2055 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2056 #if INCLUDE_CDS
2057 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2058 #else
2059 ShouldNotReachHere();
2060 return (jint)-1;
2061 #endif
2062 WB_END
2063
2064 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2065 return FileMapInfo::memory_mapping_failed();
2066 WB_END
2067
2068 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
2069 oop obj_oop = JNIHandles::resolve(obj);
2070 return Universe::heap()->is_archived_object(obj_oop);
2071 WB_END
2072
2073 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2074 ResourceMark rm(THREAD);
2075 oop str_oop = JNIHandles::resolve(str);
2076 int length;
2077 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2078 return StringTable::lookup_shared(chars, length) == str_oop;
2079 WB_END
2080
2081 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2082 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2083 WB_END
2084
2085 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2086 return ArchiveHeapLoader::closed_regions_mapped();
2087 WB_END
2088
2089 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
2090 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2091 if (k->is_instance_klass()) {
2092 InstanceKlass *ik = InstanceKlass::cast(k);
2093 ConstantPool *cp = ik->constants();
2094 objArrayOop refs = cp->resolved_references();
2095 return (jobject)JNIHandles::make_local(THREAD, refs);
2096 } else {
2097 return NULL;
2098 }
2099 WB_END
2100
2101 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2102 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2103 if (!k->is_instance_klass()) {
2104 return;
2105 }
2106 InstanceKlass *ik = InstanceKlass::cast(k);
2107 ik->link_class(THREAD); // may throw verification error
2108 WB_END
2109
2110 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2111 return ArchiveHeapLoader::open_regions_mapped();
2112 WB_END
2113
2114 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2115 #if INCLUDE_CDS
2116 return true;
2117 #else
2118 return false;
2119 #endif // INCLUDE_CDS
2120 WB_END
2121
2122 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2123 #if COMPILER2_OR_JVMCI
2124 return true;
2125 #else
2126 return false;
2127 #endif
2128 WB_END
2129
2130 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2131 #if INCLUDE_JVMCI
2132 return JVMCIGlobals::gc_supports_jvmci();
2133 #else
2134 return false;
2135 #endif
2136 WB_END
2137
2138 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2139 return HeapShared::can_write();
2140 WB_END
2141
2142
2143 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2144 #if INCLUDE_JFR
2145 return true;
2146 #else
2147 return false;
2148 #endif // INCLUDE_JFR
2149 WB_END
2150
2151 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2152 #if defined(DTRACE_ENABLED)
2153 return true;
2154 #else
2155 return false;
2156 #endif // DTRACE_ENABLED
2157 WB_END
2158
2159 #if INCLUDE_CDS
2160
2161 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2162 ResourceMark rm;
2163 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2164 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2165 return result;
2166 WB_END
2167
2168 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2169 ResourceMark rm;
2170 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2171 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2172 return result;
2173 WB_END
2174
2175 #endif // INCLUDE_CDS
2176
2177 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2178 class ReadMonitorsClosure : public HandshakeClosure {
2179 jboolean _executed;
2180
2181 void do_thread(Thread* th) {
2182 JavaThread* jt = JavaThread::cast(th);
2183 ResourceMark rm;
2184
2185 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2186
2187 if (!jt->has_last_Java_frame()) {
2188 return;
2189 }
2190 RegisterMap rmap(jt,
2191 RegisterMap::UpdateMap::include,
2192 RegisterMap::ProcessFrames::include,
2193 RegisterMap::WalkContinuation::skip);
2194 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != NULL; vf = vf->java_sender()) {
2195 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2196 if (monitors != NULL) {
2197 int len = monitors->length();
2198 // Walk monitors youngest to oldest
2199 for (int i = len - 1; i >= 0; i--) {
2200 MonitorInfo* mon_info = monitors->at(i);
2201 if (mon_info->eliminated()) continue;
2202 oop owner = mon_info->owner();
2203 if (owner != NULL) {
2204 info->append(mon_info);
2205 }
2206 }
2207 }
2208 }
2209 _executed = true;
2210 }
2211
2212 public:
2213 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2214 jboolean executed() const { return _executed; }
2215 };
2216
2217 ReadMonitorsClosure rmc;
2218 if (thread_handle != NULL) {
2219 ThreadsListHandle tlh;
2220 JavaThread* target = nullptr;
2221 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL);
2222 if (is_alive) {
2223 Handshake::execute(&rmc, &tlh, target);
2224 }
2225 }
2226 return rmc.executed();
2227 WB_END
2228
2229 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2230 class TraceSelfClosure : public HandshakeClosure {
2231 jint _num_threads_completed;
2232
2233 void do_thread(Thread* th) {
2234 JavaThread* jt = JavaThread::cast(th);
2235 ResourceMark rm;
2236
2237 jt->print_on(tty);
2238 jt->print_stack_on(tty);
2239 tty->cr();
2240 Atomic::inc(&_num_threads_completed);
2241 }
2242
2243 public:
2244 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2245
2246 jint num_threads_completed() const { return _num_threads_completed; }
2247 };
2248 TraceSelfClosure tsc(Thread::current());
2249
2250 if (all_threads) {
2251 Handshake::execute(&tsc);
2252 } else if (thread_handle != NULL) {
2253 ThreadsListHandle tlh;
2254 JavaThread* target = nullptr;
2255 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL);
2256 if (is_alive) {
2257 Handshake::execute(&tsc, &tlh, target);
2258 }
2259 }
2260 return tsc.num_threads_completed();
2261 WB_END
2262
2263 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2264 class TraceSelfClosure : public AsyncHandshakeClosure {
2265 JavaThread* _self;
2266 void do_thread(Thread* th) {
2267 assert(th->is_Java_thread(), "sanity");
2268 // AsynchHandshake handshakes are only executed by target.
2269 assert(_self == th, "Must be");
2270 assert(Thread::current() == th, "Must be");
2271 JavaThread* jt = JavaThread::cast(th);
2272 ResourceMark rm;
2273 jt->print_on(tty);
2274 jt->print_stack_on(tty);
2275 tty->cr();
2276 }
2277
2278 public:
2279 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2280 };
2281 if (thread_handle != NULL) {
2282 ThreadsListHandle tlh;
2283 JavaThread* target = nullptr;
2284 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL);
2285 if (is_alive) {
2286 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2287 Handshake::execute(tsc, target);
2288 }
2289 }
2290 WB_END
2291
2292 static volatile int _emulated_lock = 0;
2293
2294 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2295 JavaThread* self = JavaThread::current();
2296
2297 {
2298 // Before trying to acquire the lock transition into a safepoint safe state.
2299 // Otherwise if either suspender or suspendee blocks for a safepoint
2300 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2301 // the lock without allowing the safepoint to progress.
2302 ThreadBlockInVM tbivm(self);
2303
2304 // We will deadlock here if we are 'suspender' and 'suspendee'
2305 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2306 // at the right place.
2307 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2308 assert(_emulated_lock == 1, "Must be locked");
2309
2310 // Sleep much longer in suspendee to force situation where
2311 // 'suspender' is waiting above to acquire lock.
2312 os::naked_short_sleep(suspender ? 1 : 10);
2313 }
2314 Atomic::store(&_emulated_lock, 0);
2315 WB_END
2316
2317 // Some convenience methods to deal with objects from java
2318 int WhiteBox::offset_for_field(const char* field_name, oop object,
2319 Symbol* signature_symbol) {
2320 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2321
2322 //Get the class of our object
2323 Klass* arg_klass = object->klass();
2324 //Turn it into an instance-klass
2325 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2326
2327 //Create symbols to look for in the class
2328 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2329
2330 //To be filled in with an offset of the field we're looking for
2331 fieldDescriptor fd;
2332
2333 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2334 if (res == NULL) {
2335 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2336 name_symbol->as_C_string());
2337 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2338 }
2339
2340 //fetch the field at the offset we've found
2341 int dest_offset = fd.offset();
2342
2343 return dest_offset;
2344 }
2345
2346
2347 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2348 int offset = offset_for_field(field_name, object,
2349 vmSymbols::string_signature());
2350 oop string = object->obj_field(offset);
2351 if (string == NULL) {
2352 return NULL;
2353 }
2354 const char* ret = java_lang_String::as_utf8_string(string);
2355 return ret;
2356 }
2357
2358 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2359 int offset =
2360 offset_for_field(field_name, object, vmSymbols::bool_signature());
2361 bool ret = (object->bool_field(offset) == JNI_TRUE);
2362 return ret;
2363 }
2364
2365 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2366 ResourceMark rm;
2367 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2368 const char* klass_name = klass->external_name();
2369
2370 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2371
2372 // one by one registration natives for exception catching
2373 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2374 CHECK_JNI_EXCEPTION(env);
2375 for (int i = 0, n = method_count; i < n; ++i) {
2376 // Skip dummy entries
2377 if (method_array[i].fnPtr == NULL) continue;
2378 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2379 jthrowable throwable_obj = env->ExceptionOccurred();
2380 if (throwable_obj != NULL) {
2381 env->ExceptionClear();
2382 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2383 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2384 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2385 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2386 klass_name, method_array[i].name, method_array[i].signature);
2387 }
2388 } else {
2389 // Registration failed unexpectedly.
2390 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2391 klass_name, method_array[i].name, method_array[i].signature);
2392 env->UnregisterNatives(wbclass);
2393 break;
2394 }
2395 }
2396 }
2397 }
2398
2399 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2400 // can't be in VM when we call JNI
2401 ThreadToNativeFromVM ttnfv(thread);
2402 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2403 CHECK_JNI_EXCEPTION_(env, 0);
2404 int ret;
2405 {
2406 ThreadInVMfromNative ttvfn(thread); // back to VM
2407 ret = DirectivesParser::parse_string(dir, tty);
2408 }
2409 env->ReleaseStringUTFChars(compDirect, dir);
2410 // -1 for error parsing directive. Return 0 as number of directives added.
2411 if (ret == -1) {
2412 ret = 0;
2413 }
2414 return (jint) ret;
2415 WB_END
2416
2417 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2418 DirectivesStack::pop(count);
2419 WB_END
2420
2421 // Checks that the library libfile has the noexecstack bit set.
2422 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2423 jboolean ret = false;
2424 #ifdef LINUX
2425 // Can't be in VM when we call JNI.
2426 ThreadToNativeFromVM ttnfv(thread);
2427 const char* lf = env->GetStringUTFChars(libfile, NULL);
2428 CHECK_JNI_EXCEPTION_(env, 0);
2429 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2430 env->ReleaseStringUTFChars(libfile, lf);
2431 #endif
2432 return ret;
2433 WB_END
2434
2435 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2436 LINUX_ONLY(return OSContainer::is_containerized();)
2437 return false;
2438 WB_END
2439
2440 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2441 jobject o,
2442 jstring proc_cgroups,
2443 jstring proc_self_cgroup,
2444 jstring proc_self_mountinfo))
2445 jint ret = 0;
2446 #ifdef LINUX
2447 ThreadToNativeFromVM ttnfv(thread);
2448 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL);
2449 CHECK_JNI_EXCEPTION_(env, 0);
2450 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL);
2451 CHECK_JNI_EXCEPTION_(env, 0);
2452 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL);
2453 CHECK_JNI_EXCEPTION_(env, 0);
2454 u1 cg_type_flags = 0;
2455 // This sets cg_type_flags
2456 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2457 ret = (jint)cg_type_flags;
2458 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2459 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2460 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2461 #endif
2462 return ret;
2463 WB_END
2464
2465 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2466 os::print_os_info(tty);
2467 WB_END
2468
2469 // Elf decoder
2470 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2471 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2472 ElfFile::_do_not_cache_elf_section = true;
2473 #endif
2474 WB_END
2475
2476 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2477 return (jlong) ResolvedMethodTable::items_count();
2478 WB_END
2479
2480 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2481 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2482 WB_END
2483
2484 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2485 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2486 // Return size in bytes.
2487 return k->size() * wordSize;
2488 WB_END
2489
2490 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2491 // It explains how the thread's priority field is used for test state coordination.
2492 //
2493 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2494 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2495 jlong tid = java_lang_Thread::thread_id(target_oop);
2496 JavaThread* target = java_lang_Thread::thread(target_oop);
2497
2498 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2499 ThreadsListHandle tlh;
2500
2501 // Look up the target thread by tid to ensure it is present
2502 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2503 if (t == NULL) {
2504 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2505 }
2506
2507 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2508 // Allow target to terminate by boosting priority
2509 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2510
2511 // Now wait for the target to terminate
2512 while (!target->is_terminated()) {
2513 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2514 os::naked_short_sleep(0);
2515 }
2516
2517 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2518
2519 // Now release the GC inducing thread - we have to re-resolve the external oop that
2520 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2521 oop original = JNIHandles::resolve_non_null(target_handle);
2522 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2523
2524 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2525
2526 // The Java code should be creating garbage and triggering GC, which would potentially move
2527 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2528 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2529 // kick in.
2530 for (int i = 0; i < 5; i++) {
2531 oop original = JNIHandles::resolve_non_null(target_handle);
2532 oop current = t->threadObj();
2533 if (original != current) {
2534 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2535 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2536 } else {
2537 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2538 ThreadBlockInVM tbivm(thread);
2539 os::naked_short_sleep(50);
2540 }
2541 }
2542 WB_END
2543
2544 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2545 ResourceMark rm; // for verify
2546 stringStream st;
2547 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2548 frame* current_frame = fst.current();
2549 if (log) {
2550 current_frame->print_value_on(&st, NULL);
2551 }
2552 current_frame->verify(fst.register_map());
2553 }
2554 if (log) {
2555 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2556 tty->print_raw(st.freeze());
2557 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2558 }
2559 WB_END
2560
2561 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2562 #if INCLUDE_JVMTI
2563 return JNI_TRUE;
2564 #else
2565 return JNI_FALSE;
2566 #endif
2567 WB_END
2568
2569 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2570 os::naked_short_sleep(time);
2571 WB_END
2572
2573 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2574 ThreadToNativeFromVM ttn(thread);
2575 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2576 CHECK_JNI_EXCEPTION_(env, NULL);
2577 return info_string;
2578 WB_END
2579
2580 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2581 GCLocker::lock_critical(thread);
2582 WB_END
2583
2584 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2585 GCLocker::unlock_critical(thread);
2586 WB_END
2587
2588 #define CC (char*)
2589
2590 static JNINativeMethod methods[] = {
2591 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2592 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2593 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2594 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2595 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2596 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2597 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2598 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2599 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2600 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2601 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2602 {CC"parseCommandLine0",
2603 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2604 (void*) &WB_ParseCommandLine
2605 },
2606 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2607 (void*)&WB_AddToBootstrapClassLoaderSearch},
2608 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2609 (void*)&WB_AddToSystemClassLoaderSearch},
2610 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2611 (void*)&WB_GetCompressedOopsMaxHeapSize},
2612 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2613 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2614 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2615 #if INCLUDE_CDS
2616 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2617 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2618 #endif
2619 #if INCLUDE_G1GC
2620 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2621 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2622 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2623 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2624 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2625 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2626 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2627 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2628 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2629 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2630 (void*)&WB_G1AuxiliaryMemoryUsage },
2631 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2632 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2633 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2634 #endif // INCLUDE_G1GC
2635 #if INCLUDE_PARALLELGC
2636 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2637 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2638 #endif
2639 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2640 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2641 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2642 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2643 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2644 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2645 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2646 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2647 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2648 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2649 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2650 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2651 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2652 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2653 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2654 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2655 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2656 (void*)&WB_DeoptimizeMethod },
2657 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2658 (void*)&WB_IsMethodCompiled },
2659 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2660 (void*)&WB_IsMethodCompilable},
2661 {CC"isMethodQueuedForCompilation0",
2662 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2663 {CC"isIntrinsicAvailable0",
2664 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2665 (void*)&WB_IsIntrinsicAvailable},
2666 {CC"makeMethodNotCompilable0",
2667 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2668 {CC"testSetDontInlineMethod0",
2669 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2670 {CC"getMethodCompilationLevel0",
2671 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2672 {CC"getMethodDecompileCount0",
2673 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2674 {CC"getMethodTrapCount0",
2675 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2676 (void*)&WB_GetMethodTrapCount},
2677 {CC"getDeoptCount0",
2678 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2679 {CC"getMethodEntryBci0",
2680 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2681 {CC"getCompileQueueSize",
2682 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2683 {CC"testSetForceInlineMethod0",
2684 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2685 {CC"enqueueMethodForCompilation0",
2686 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2687 {CC"enqueueInitializerForCompilation0",
2688 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2689 {CC"markMethodProfiled",
2690 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2691 {CC"clearMethodState0",
2692 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2693 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2694 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2695 {CC"matchesMethod",
2696 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2697 (void*)&WB_MatchesMethod},
2698 {CC"matchesInline",
2699 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2700 (void*)&WB_MatchesInline},
2701 {CC"shouldPrintAssembly",
2702 CC"(Ljava/lang/reflect/Executable;I)Z",
2703 (void*)&WB_ShouldPrintAssembly},
2704
2705 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2706 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2707 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2708 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2709 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2710 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2711 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2712 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2713 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2714 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2715 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2716 (void*)&WB_SetStringVMFlag},
2717 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2718 (void*)&WB_GetBooleanVMFlag},
2719 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2720 (void*)&WB_GetIntVMFlag},
2721 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2722 (void*)&WB_GetUintVMFlag},
2723 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2724 (void*)&WB_GetIntxVMFlag},
2725 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2726 (void*)&WB_GetUintxVMFlag},
2727 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2728 (void*)&WB_GetUint64VMFlag},
2729 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2730 (void*)&WB_GetSizeTVMFlag},
2731 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2732 (void*)&WB_GetDoubleVMFlag},
2733 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2734 (void*)&WB_GetStringVMFlag},
2735 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2736 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2737 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2738 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2739 {CC"allocateMetaspace",
2740 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2741 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2742 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2743 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2744 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2745 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2746 (void*)&WB_GetNMethod },
2747 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2748 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2749 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2750 {CC"getCompilationActivityMode",
2751 CC"()I", (void*)&WB_GetCompilationActivityMode},
2752 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2753 (void*)&WB_GetMethodData },
2754 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2755 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2756 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2757 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2758 (void*)&WB_DefineModule },
2759 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2760 (void*)&WB_AddModuleExports },
2761 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2762 (void*)&WB_AddReadsModule },
2763 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2764 (void*)&WB_AddModuleExportsToAllUnnamed },
2765 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2766 (void*)&WB_AddModuleExportsToAll },
2767 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2768 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2769 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2770 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2771 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2772 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2773 {CC"remapInstructionOperandFromCPCache0",
2774 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2775 {CC"encodeConstantPoolIndyIndex0",
2776 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2777 {CC"getObjectsViaKlassOopMaps0",
2778 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
2779 {CC"getObjectsViaOopIterator0",
2780 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
2781 {CC"getObjectsViaFrameOopIterator",
2782 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
2783 {CC"getMethodBooleanOption",
2784 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2785 (void*)&WB_GetMethodBooleaneOption},
2786 {CC"getMethodIntxOption",
2787 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2788 (void*)&WB_GetMethodIntxOption},
2789 {CC"getMethodUintxOption",
2790 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2791 (void*)&WB_GetMethodUintxOption},
2792 {CC"getMethodDoubleOption",
2793 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2794 (void*)&WB_GetMethodDoubleOption},
2795 {CC"getMethodStringOption",
2796 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2797 (void*)&WB_GetMethodStringOption},
2798 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2799 (void*)&WB_GetDefaultArchivePath},
2800 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2801 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2802 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2803 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2804 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2805 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2806 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2807 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2808 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2809 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2810 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2811 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2812 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2813 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2814 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2815 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2816 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2817
2818 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2819 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2820 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2821 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2822 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2823 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2824 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2825 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2826 (void*)&WB_AddCompilerDirective },
2827 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2828 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2829 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2830 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2831 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2832 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2833 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2834 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2835 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2836 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2837 (void*)&WB_ConcurrentGCRunTo},
2838 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2839 (void*)&WB_CheckLibSpecifiesNoexecstack},
2840 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2841 {CC"validateCgroup",
2842 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2843 (void*)&WB_ValidateCgroup },
2844 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2845 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2846 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2847 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2848 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2849
2850 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2851 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2852 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2853 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2854 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2855 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2856 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2857 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2858 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2859 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2860 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2861
2862 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2863 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2864 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2865
2866 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2867 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2868 };
2869
2870
2871 #undef CC
2872
2873 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2874 {
2875 if (WhiteBoxAPI) {
2876 // Make sure that wbclass is loaded by the null classloader
2877 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2878 Handle loader(THREAD, ik->class_loader());
2879 if (loader.is_null()) {
2880 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2881 WhiteBox::set_used();
2882 }
2883 }
2884 }
2885 JVM_END