1 /*
2 * Copyright (c) 2012, 2025, 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 "cds.h"
26 #include "cds/aotMappedHeapLoader.hpp"
27 #include "cds/aotMetaspace.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.inline.hpp"
31 #include "classfile/classLoader.hpp"
32 #include "classfile/classLoaderDataGraph.hpp"
33 #include "classfile/classLoaderStats.hpp"
34 #include "classfile/classPrinter.hpp"
35 #include "classfile/javaClasses.inline.hpp"
36 #include "classfile/modules.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 "code/compiledIC.hpp"
43 #include "compiler/compilationPolicy.hpp"
44 #include "compiler/compilerOracle.hpp"
45 #include "compiler/directivesParser.hpp"
46 #include "compiler/methodMatcher.hpp"
47 #include "gc/shared/concurrentGCBreakpoints.hpp"
48 #include "gc/shared/gcConfig.hpp"
49 #include "gc/shared/genArguments.hpp"
50 #include "jfr/periodic/sampling/jfrCPUTimeThreadSampler.hpp"
51 #include "jvm.h"
52 #include "jvmtifiles/jvmtiEnv.hpp"
53 #include "logging/log.hpp"
54 #include "memory/iterator.hpp"
55 #include "memory/iterator.inline.hpp"
56 #include "memory/memoryReserver.hpp"
57 #include "memory/metadataFactory.hpp"
58 #include "memory/metaspace/testHelpers.hpp"
59 #include "memory/metaspaceUtils.hpp"
60 #include "memory/oopFactory.hpp"
61 #include "memory/resourceArea.hpp"
62 #include "memory/universe.hpp"
63 #include "nmt/mallocSiteTable.hpp"
64 #include "oops/access.hpp"
65 #include "oops/array.hpp"
66 #include "oops/compressedOops.hpp"
67 #include "oops/compressedOops.inline.hpp"
68 #include "oops/constantPool.inline.hpp"
69 #include "oops/klass.inline.hpp"
70 #include "oops/method.inline.hpp"
71 #include "oops/methodData.inline.hpp"
72 #include "oops/objArrayKlass.hpp"
73 #include "oops/objArrayOop.inline.hpp"
74 #include "oops/oop.inline.hpp"
75 #include "oops/typeArrayOop.inline.hpp"
76 #include "prims/jvmtiEnvBase.hpp"
77 #include "prims/resolvedMethodTable.hpp"
78 #include "prims/wbtestmethods/parserTests.hpp"
79 #include "prims/whitebox.inline.hpp"
80 #include "runtime/arguments.hpp"
81 #include "runtime/atomicAccess.hpp"
82 #include "runtime/deoptimization.hpp"
83 #include "runtime/fieldDescriptor.inline.hpp"
84 #include "runtime/flags/jvmFlag.hpp"
85 #include "runtime/flags/jvmFlagAccess.hpp"
86 #include "runtime/frame.inline.hpp"
87 #include "runtime/handles.inline.hpp"
88 #include "runtime/handshake.hpp"
89 #include "runtime/interfaceSupport.inline.hpp"
90 #include "runtime/javaCalls.hpp"
91 #include "runtime/javaThread.inline.hpp"
92 #include "runtime/jniHandles.inline.hpp"
93 #include "runtime/keepStackGCProcessed.hpp"
94 #include "runtime/lockStack.hpp"
95 #include "runtime/os.hpp"
96 #include "runtime/stackFrameStream.inline.hpp"
97 #include "runtime/synchronizer.hpp"
98 #include "runtime/threadSMR.hpp"
99 #include "runtime/vframe.hpp"
100 #include "runtime/vm_version.hpp"
101 #include "services/memoryService.hpp"
102 #include "utilities/align.hpp"
103 #include "utilities/checkedCast.hpp"
104 #include "utilities/debug.hpp"
105 #include "utilities/elfFile.hpp"
106 #include "utilities/exceptions.hpp"
107 #include "utilities/macros.hpp"
108 #include "utilities/nativeCallStack.hpp"
109 #include "utilities/ostream.hpp"
110 #include "utilities/vmError.hpp"
111 #if INCLUDE_G1GC
112 #include "gc/g1/g1Arguments.hpp"
113 #include "gc/g1/g1CollectedHeap.inline.hpp"
114 #include "gc/g1/g1ConcurrentMark.hpp"
115 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
116 #include "gc/g1/g1HeapRegionManager.hpp"
117 #include "gc/g1/g1HeapRegionRemSet.inline.hpp"
118 #endif // INCLUDE_G1GC
119 #if INCLUDE_PARALLELGC
120 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
121 #endif // INCLUDE_PARALLELGC
122 #if INCLUDE_SERIALGC
123 #include "gc/serial/serialHeap.hpp"
124 #endif // INCLUDE_SERIALGC
125 #if INCLUDE_ZGC
126 #include "gc/z/zAddress.inline.hpp"
127 #include "gc/z/zHeap.inline.hpp"
128 #endif // INCLUDE_ZGC
129 #if INCLUDE_JVMCI
130 #include "jvmci/jvmciEnv.hpp"
131 #include "jvmci/jvmciRuntime.hpp"
132 #endif
133 #ifdef LINUX
134 #include "cgroupSubsystem_linux.hpp"
135 #include "os_linux.hpp"
136 #include "osContainer_linux.hpp"
137 #endif
138
139 #define CHECK_JNI_EXCEPTION_(env, value) \
140 do { \
141 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
142 THREAD->clear_pending_jni_exception_check(); \
143 if (HAS_PENDING_EXCEPTION) { \
144 return(value); \
145 } \
146 } while (0)
147
148 #define CHECK_JNI_EXCEPTION(env) \
149 do { \
150 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
151 THREAD->clear_pending_jni_exception_check(); \
152 if (HAS_PENDING_EXCEPTION) { \
153 return; \
154 } \
155 } while (0)
156
157 bool WhiteBox::_used = false;
158 volatile bool WhiteBox::compilation_locked = false;
159
160 class VM_WhiteBoxOperation : public VM_Operation {
161 public:
162 VM_WhiteBoxOperation() { }
163 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
164 bool allow_nested_vm_operations() const { return true; }
165 };
166
167
168 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
169 return (jlong)(void*)JNIHandles::resolve(obj);
170 WB_END
171
172 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
173 return heapOopSize;
174 WB_END
175
176 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
177 return (jint)os::vm_page_size();
178 WB_END
179
180 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
181 return os::vm_allocation_granularity();
182 WB_END
183
184 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
185 return os::large_page_size();
186 WB_END
187
188 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length))
189 ResourceMark rm(THREAD);
190 stringStream sb;
191 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length);
192 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD);
193 return (jstring) JNIHandles::make_local(THREAD, result);
194 WB_END
195
196 WB_ENTRY(jint, WB_TakeLockAndHangInSafepoint(JNIEnv* env, jobject wb))
197 JavaThread* self = JavaThread::current();
198 // VMStatistic_lock is used to minimize interference with VM locking
199 MutexLocker mu(VMStatistic_lock);
200 VM_HangInSafepoint force_safepoint_stuck_op;
201 VMThread::execute(&force_safepoint_stuck_op);
202 ShouldNotReachHere();
203 return 0;
204 WB_END
205
206 class WBIsKlassAliveClosure : public LockedClassesDo {
207 Symbol* _name;
208 int _count;
209 public:
210 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
211
212 void do_klass(Klass* k) {
213 Symbol* ksym = k->name();
214 if (ksym->fast_compare(_name) == 0) {
215 _count++;
216 } else if (k->is_instance_klass()) {
217 // Need special handling for hidden classes because the JVM
218 // appends "+<hex-address>" to hidden class names.
219 InstanceKlass *ik = InstanceKlass::cast(k);
220 if (ik->is_hidden()) {
221 ResourceMark rm;
222 char* k_name = ksym->as_C_string();
223 // Find the first '+' char and truncate the string at that point.
224 // NOTE: This will not work correctly if the original hidden class
225 // name contains a '+'.
226 char* plus_char = strchr(k_name, '+');
227 if (plus_char != nullptr) {
228 *plus_char = 0;
229 char* c_name = _name->as_C_string();
230 if (strcmp(c_name, k_name) == 0) {
231 _count++;
232 }
233 }
234 }
235 }
236 }
237
238 int count() const {
239 return _count;
240 }
241 };
242
243 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
244 oop h_name = JNIHandles::resolve(name);
245 if (h_name == nullptr) {
246 return 0;
247 }
248 Symbol* sym = java_lang_String::as_symbol(h_name);
249 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
250
251 WBIsKlassAliveClosure closure(sym);
252 ClassLoaderDataGraph::classes_do(&closure);
253
254 // Return the count of alive classes with this name.
255 return closure.count();
256 WB_END
257
258 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
259 oop h_name = JNIHandles::resolve(name);
260 if (h_name == nullptr) {
261 return 0;
262 }
263 Symbol* sym = java_lang_String::as_symbol(h_name);
264 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
265 return (jint)sym->refcount();
266 WB_END
267
268
269 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
270 #if INCLUDE_JVMTI
271 ResourceMark rm;
272 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
273 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
274 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
275 assert(err == JVMTI_ERROR_NONE, "must not fail");
276 #endif
277 }
278 WB_END
279
280 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
281 #if INCLUDE_JVMTI
282 ResourceMark rm;
283 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
284 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
285 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
286 assert(err == JVMTI_ERROR_NONE, "must not fail");
287 #endif
288 }
289 WB_END
290
291
292 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
293 return (jlong)Arguments::max_heap_for_compressed_oops();
294 }
295 WB_END
296
297 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
298 tty->print_cr("Minimum heap %zu Initial heap %zu "
299 "Maximum heap %zu Space alignment %zu Heap alignment %zu",
300 MinHeapSize,
301 InitialHeapSize,
302 MaxHeapSize,
303 SpaceAlignment,
304 HeapAlignment);
305 }
306 WB_END
307
308 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
309 size_t granularity = os::vm_allocation_granularity();
310 ReservedHeapSpace rhs = HeapReserver::reserve(100 * granularity, granularity, os::vm_page_size(), nullptr);
311
312 // Check if constraints are complied
313 if (!( UseCompressedOops && rhs.is_reserved() &&
314 CompressedOops::base() != nullptr &&
315 CompressedOops::use_implicit_null_checks() )) {
316 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
317 "\tUseCompressedOops is %d\n"
318 "\trhs.base() is " PTR_FORMAT "\n"
319 "\tCompressedOops::base() is " PTR_FORMAT "\n"
320 "\tCompressedOops::use_implicit_null_checks() is %d",
321 UseCompressedOops,
322 p2i(rhs.base()),
323 p2i(CompressedOops::base()),
324 CompressedOops::use_implicit_null_checks());
325 return;
326 }
327
328 VirtualSpace vs;
329 vs.initialize(rhs, 50 * granularity);
330
331 tty->print_cr("Reading from no access area... ");
332 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
333 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
334 WB_END
335
336 WB_ENTRY(void, WB_DecodeNKlassAndAccessKlass(JNIEnv* env, jobject o, jint nKlass))
337 assert(UseCompressedClassPointers, "Should only call for UseCompressedClassPointers");
338 const narrowKlass nk = (narrowKlass)nKlass;
339 const Klass* const k = CompressedKlassPointers::decode_not_null_without_asserts(nKlass);
340 printf("WB_DecodeNKlassAndAccessKlass: nk %u k " PTR_FORMAT "\n", nk, p2i(k));
341 printf("Will attempt to crash now...\n");
342 fflush(stdout); // flush now - we will crash below
343 // Access k by calling a virtual function - will result in loading the vtable from *k
344 k->print_on(tty);
345 WB_END
346
347 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
348 size_t magnitude, size_t iterations) {
349 size_t granularity = os::vm_allocation_granularity();
350 ReservedHeapSpace rhs = HeapReserver::reserve(reserved_space_size * granularity, granularity, os::vm_page_size(), nullptr);
351 if (!rhs.is_reserved()) {
352 tty->print_cr("Failed to initialize ReservedSpace. Can't proceed.");
353 return 3;
354 }
355
356 VirtualSpace vs;
357 if (!vs.initialize(rhs, 0)) {
358 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
359 return 3;
360 }
361
362 int seed = os::random();
363 tty->print_cr("Random seed is %d", seed);
364
365 for (size_t i = 0; i < iterations; i++) {
366
367 // Whether we will shrink or grow
368 bool shrink = os::random() % 2L == 0;
369
370 // Get random delta to resize virtual space
371 size_t delta = (size_t)os::random() % magnitude;
372
373 // If we are about to shrink virtual space below zero, then expand instead
374 if (shrink && vs.committed_size() < delta) {
375 shrink = false;
376 }
377
378 // Resizing by delta
379 if (shrink) {
380 vs.shrink_by(delta);
381 } else {
382 // If expanding fails expand_by will silently return false
383 vs.expand_by(delta, true);
384 }
385 }
386 return 0;
387 }
388
389 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
390 jlong reserved_space_size, jlong magnitude, jlong iterations))
391 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
392 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
393 iterations);
394 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
395 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
396 return 1;
397 }
398
399 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
400 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
401 if (sizeof(size_t) < sizeof(jlong)) {
402 jlong size_t_max_value = (jlong)SIZE_MAX;
403 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
404 || iterations > size_t_max_value) {
405 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
406 return 2;
407 }
408 }
409
410 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
411 (size_t) magnitude, (size_t) iterations);
412 WB_END
413
414 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
415 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
416 WB_END
417
418 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
419 #if INCLUDE_JVMCI
420 return JVMCI::shared_library_exists();
421 #endif
422 return false;
423 WB_END
424
425 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
426 #if INCLUDE_JVMCI
427 if (EnableJVMCI) {
428 // Enter the JVMCI env that will be used by the CompileBroker.
429 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
430 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
431 }
432 #endif
433 return false;
434 WB_END
435
436 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
437 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
438 WB_END
439
440 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
441 return GCConfig::is_gc_selected_ergonomically();
442 WB_END
443
444 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
445 oop p = JNIHandles::resolve(obj);
446 #if INCLUDE_G1GC
447 if (UseG1GC) {
448 G1CollectedHeap* g1h = G1CollectedHeap::heap();
449 const G1HeapRegion* hr = g1h->heap_region_containing(p);
450 return hr->is_old_or_humongous();
451 }
452 #endif
453 #if INCLUDE_PARALLELGC
454 if (UseParallelGC) {
455 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
456 return !psh->is_in_young(p);
457 }
458 #endif
459 #if INCLUDE_ZGC
460 if (UseZGC) {
461 return ZHeap::heap()->is_old(to_zaddress(p));
462 }
463 #endif
464 #if INCLUDE_SHENANDOAHGC
465 if (UseShenandoahGC) {
466 ShenandoahHeap* sh = ShenandoahHeap::heap();
467 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
468 }
469 #endif
470 #if INCLUDE_SERIALGC
471 if (UseSerialGC) {
472 return !SerialHeap::heap()->is_in_young(p);
473 }
474 #endif
475 ShouldNotReachHere();
476 return false;
477 WB_END
478
479 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
480 oop p = JNIHandles::resolve(obj);
481 return p->size() * HeapWordSize;
482 WB_END
483
484 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
485 return (jlong)SpaceAlignment;
486 WB_END
487
488 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
489 return (jlong)HeapAlignment;
490 WB_END
491
492 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
493 return Universe::heap()->supports_concurrent_gc_breakpoints();
494 WB_END
495
496 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
497 ConcurrentGCBreakpoints::acquire_control();
498 WB_END
499
500 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
501 ConcurrentGCBreakpoints::release_control();
502 WB_END
503
504 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
505 ConcurrentGCBreakpoints::run_to_idle();
506 WB_END
507
508 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
509 Handle h_name(THREAD, JNIHandles::resolve(at));
510 ResourceMark rm;
511 const char* c_name = java_lang_String::as_utf8_string(h_name());
512 return ConcurrentGCBreakpoints::run_to(c_name);
513 WB_END
514
515 WB_ENTRY(jboolean, WB_ShipDebugInfoFull(JNIEnv* env, jobject o))
516 #if defined(SHIP_DEBUGINFO_FULL)
517 return true;
518 #else
519 return false;
520 #endif
521 WB_END
522
523 WB_ENTRY(jboolean, WB_ShipDebugInfoPublic(JNIEnv* env, jobject o))
524 #if defined(SHIP_DEBUGINFO_PUBLIC)
525 return true;
526 #else
527 return false;
528 #endif
529 WB_END
530
531 #if INCLUDE_G1GC
532
533 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
534 if (UseG1GC) {
535 G1CollectedHeap* g1h = G1CollectedHeap::heap();
536 oop result = JNIHandles::resolve(obj);
537 const G1HeapRegion* hr = g1h->heap_region_containing(result);
538 return hr->is_humongous();
539 }
540 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
541 WB_END
542
543 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
544 if (UseG1GC) {
545 G1CollectedHeap* g1h = G1CollectedHeap::heap();
546 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
547 return hr->is_humongous();
548 }
549 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
550 WB_END
551
552 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
553 if (UseG1GC) {
554 G1CollectedHeap* g1h = G1CollectedHeap::heap();
555 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
556 return hr->is_free();
557 }
558 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
559 WB_END
560
561 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
562 if (UseG1GC) {
563 G1CollectedHeap* g1h = G1CollectedHeap::heap();
564 size_t nr = g1h->max_num_regions();
565 return (jlong)nr;
566 }
567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
568 WB_END
569
570 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
571 if (UseG1GC) {
572 G1CollectedHeap* g1h = G1CollectedHeap::heap();
573 size_t nr = g1h->num_free_regions();
574 return (jlong)nr;
575 }
576 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
577 WB_END
578
579 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
580 if (UseG1GC) {
581 G1CollectedHeap* g1h = G1CollectedHeap::heap();
582 return g1h->concurrent_mark()->cm_thread()->in_progress();
583 }
584 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
585 WB_END
586
587 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
588 if (UseG1GC) {
589 G1CollectedHeap* g1h = G1CollectedHeap::heap();
590 G1ConcurrentMark* cm = g1h->concurrent_mark();
591 return cm->completed_mark_cycles();
592 }
593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
594 WB_END
595
596 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
597 if (UseG1GC) {
598 return (jint)G1HeapRegion::GrainBytes;
599 }
600 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
601 WB_END
602
603 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
604 if (UseG1GC) {
605 return G1CollectedHeap::heap()->has_uncommittable_regions();
606 }
607 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
608 WB_END
609
610 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
611 if (UseG1GC) {
612 ResourceMark rm(THREAD);
613 G1CollectedHeap* g1h = G1CollectedHeap::heap();
614 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
615 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
616 return JNIHandles::make_local(THREAD, h());
617 }
618 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
619 WB_END
620
621 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
622 if (UseG1GC) {
623 G1NUMA* numa = G1NUMA::numa();
624 return (jint)numa->num_active_nodes();
625 }
626 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
627 WB_END
628
629 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
630 if (UseG1GC) {
631 G1NUMA* numa = G1NUMA::numa();
632 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
633 const uint* node_ids = numa->node_ids();
634
635 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
636 for (int i = 0; i < num_node_ids; i++) {
637 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
638 }
639 return (jintArray) JNIHandles::make_local(THREAD, result);
640 }
641 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
642 WB_END
643
644 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
645
646 private:
647 const int _liveness;
648 size_t _total_count;
649 size_t _total_memory;
650 size_t _total_memory_to_free;
651
652 public:
653 OldRegionsLivenessClosure(int liveness) :
654 _liveness(liveness),
655 _total_count(0),
656 _total_memory(0),
657 _total_memory_to_free(0) { }
658
659 size_t total_count() { return _total_count; }
660 size_t total_memory() { return _total_memory; }
661 size_t total_memory_to_free() { return _total_memory_to_free; }
662
663 bool do_heap_region(G1HeapRegion* r) {
664 if (r->is_old()) {
665 size_t live = r->live_bytes();
666 size_t size = r->used();
667 size_t reg_size = G1HeapRegion::GrainBytes;
668 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
669 _total_memory += size;
670 ++_total_count;
671 if (size == reg_size) {
672 // We don't include non-full regions since they are unlikely included in mixed gc
673 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
674 _total_memory_to_free += size - live;
675 }
676 }
677 }
678 return false;
679 }
680 };
681
682
683 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
684 if (!UseG1GC) {
685 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
686 }
687 if (liveness < 0) {
688 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
689 }
690
691 G1CollectedHeap* g1h = G1CollectedHeap::heap();
692 OldRegionsLivenessClosure rli(liveness);
693 g1h->heap_region_iterate(&rli);
694
695 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
696 result->long_at_put(0, rli.total_count());
697 result->long_at_put(1, rli.total_memory());
698 result->long_at_put(2, rli.total_memory_to_free());
699 return (jlongArray) JNIHandles::make_local(THREAD, result);
700 WB_END
701
702 #endif // INCLUDE_G1GC
703
704 // Alloc memory using the test memory tag so that we can use that to see if
705 // NMT picks it up correctly
706 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
707 jlong addr = 0;
708 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
709 return addr;
710 WB_END
711
712 // Alloc memory with pseudo call stack. The test can create pseudo malloc
713 // allocation site to stress the malloc tracking.
714 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
715 address pc = (address)(size_t)pseudo_stack;
716 NativeCallStack stack(&pc, 1);
717 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
718 WB_END
719
720 // Alloc memory with pseudo call stack and specific memory tag.
721 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag))
722 address pc = (address)(size_t)pseudo_stack;
723 NativeCallStack stack(&pc, 1);
724 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack);
725 WB_END
726
727 // Free the memory allocated by NMTAllocTest
728 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
729 os::free((void*)(uintptr_t)mem);
730 WB_END
731
732 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
733 return (jlong)(uintptr_t)os::reserve_memory(size, mtTest);
734 WB_END
735
736 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
737 return (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size, mtTest);
738 WB_END
739
740 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
741 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
742 WB_END
743
744 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
745 os::uncommit_memory((char *)(uintptr_t)addr, size);
746 WB_END
747
748 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
749 os::release_memory((char *)(uintptr_t)addr, size);
750 WB_END
751
752 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
753 int hash_size = MallocSiteTable::hash_buckets();
754 assert(hash_size > 0, "NMT hash_size should be > 0");
755 return (jint)hash_size;
756 WB_END
757
758 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
759 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
760 return (jlong)arena;
761 WB_END
762
763 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
764 Arena* a = (Arena*)arena;
765 delete a;
766 WB_END
767
768 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
769 Arena* a = (Arena*)arena;
770 a->Amalloc(size_t(size));
771 WB_END
772
773 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
774 assert(method != nullptr, "method should not be null");
775 ThreadToNativeFromVM ttn(thread);
776 return env->FromReflectedMethod(method);
777 }
778
779 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
780 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
781 private:
782 int _result;
783 const bool _make_not_entrant;
784 public:
785 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
786 _result(0), _make_not_entrant(make_not_entrant) { }
787 int result() const { return _result; }
788
789 void doit() {
790 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
791 if (t->has_last_Java_frame()) {
792 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
793 frame* f = fst.current();
794 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
795 Deoptimization::deoptimize(t, *f);
796 if (_make_not_entrant) {
797 nmethod* nm = CodeCache::find_nmethod(f->pc());
798 assert(nm != nullptr, "did not find nmethod");
799 nm->make_not_entrant(nmethod::InvalidationReason::WHITEBOX_DEOPTIMIZATION);
800 }
801 ++_result;
802 }
803 }
804 }
805 }
806 }
807 };
808
809 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
810 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
811 VMThread::execute(&op);
812 return op.result();
813 WB_END
814
815 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
816 bool result = false;
817 if (thread->has_last_Java_frame()) {
818 ResourceMark rm(THREAD);
819 RegisterMap reg_map(thread,
820 RegisterMap::UpdateMap::include,
821 RegisterMap::ProcessFrames::include,
822 RegisterMap::WalkContinuation::skip);
823 javaVFrame *jvf = thread->last_java_vframe(®_map);
824 for (jint d = 0; d < depth && jvf != nullptr; d++) {
825 jvf = jvf->java_sender();
826 }
827 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
828 }
829 return result;
830 WB_END
831
832 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
833 DeoptimizationScope deopt_scope;
834 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
835 deopt_scope.deoptimize_marked();
836 WB_END
837
838 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
839 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
840 int result = 0;
841 CHECK_JNI_EXCEPTION_(env, result);
842
843 DeoptimizationScope deopt_scope;
844 {
845 MutexLocker mu(Compile_lock);
846 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
847 if (is_osr) {
848 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
849 } else {
850 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
851 if (mh->code() != nullptr) {
852 deopt_scope.mark(mh->code());
853 ++result;
854 }
855 }
856 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
857 }
858
859 deopt_scope.deoptimize_marked();
860
861 return result;
862 WB_END
863
864 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
865 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
866 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
867 MutexLocker mu(Compile_lock);
868 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
869 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
870 if (code == nullptr) {
871 return JNI_FALSE;
872 }
873 return !code->is_marked_for_deoptimization();
874 WB_END
875
876 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
877 if (comp == nullptr) {
878 return true;
879 }
880 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
881 bool exclude = directive->ExcludeOption;
882 DirectivesStack::release(directive);
883 return exclude;
884 }
885
886 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
887 if (is_osr) {
888 return CompilationPolicy::can_be_osr_compiled(mh, level);
889 } else {
890 return CompilationPolicy::can_be_compiled(mh, level);
891 }
892 }
893
894 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
895 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
896 return false;
897 }
898 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
899 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
900 MutexLocker mu(Compile_lock);
901 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
902
903 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
904 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
905 // to exclude a compilation of 'method'.
906 if (comp_level == CompLevel_any) {
907 // Both compilers could have ExcludeOption set. Check all combinations.
908 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
909 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
910 if (excluded_c1 && excluded_c2) {
911 // Compilation of 'method' excluded by both compilers.
912 return false;
913 }
914
915 if (excluded_c1) {
916 // C1 only has ExcludeOption set: Check if compilable with C2.
917 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
918 } else if (excluded_c2) {
919 // C2 only has ExcludeOption set: Check if compilable with C1.
920 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
921 }
922 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
923 // Compilation of 'method' excluded by compiler used for 'comp_level'.
924 return false;
925 }
926
927 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
928 WB_END
929
930 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
931 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
932 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
933 MutexLocker mu(Compile_lock);
934 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
935 return mh->queued_for_compilation();
936 WB_END
937
938 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
939 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
940 return false; // Intrinsic is not available on a non-existent compilation level.
941 }
942 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
943 if (comp == nullptr) {
944 // Could have compLevel == 0, or !TieredCompilation and incompatible values of TieredStopAtLevel and compLevel.
945 tty->print_cr("WB error: no compiler for requested compilation level %d", compLevel);
946 return false;
947 }
948
949 jmethodID method_id, compilation_context_id;
950 method_id = reflected_method_to_jmid(thread, env, method);
951 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
952 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
953
954 DirectiveSet* directive;
955 if (compilation_context != nullptr) {
956 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
957 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
958 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
959 directive = DirectivesStack::getMatchingDirective(cch, comp);
960 } else {
961 // Calling with null matches default directive
962 directive = DirectivesStack::getDefaultDirective(comp);
963 }
964 bool result = comp->is_intrinsic_available(mh, directive);
965 DirectivesStack::release(directive);
966 return result;
967 WB_END
968
969 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
970 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
971 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
972 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
973 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
974 return (code != nullptr ? code->comp_level() : CompLevel_none);
975 WB_END
976
977 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
978 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
979 CHECK_JNI_EXCEPTION(env);
980 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
981 if (is_osr) {
982 mh->set_not_osr_compilable("WhiteBox", comp_level);
983 } else {
984 mh->set_not_compilable("WhiteBox", comp_level);
985 }
986 WB_END
987
988 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
989 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
990 CHECK_JNI_EXCEPTION_(env, 0);
991 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
992 uint cnt = 0;
993 MethodData* mdo = mh->method_data();
994 if (mdo != nullptr) {
995 cnt = mdo->decompile_count();
996 }
997 return cnt;
998 WB_END
999
1000 // Get the trap count of a method for a specific reason. If the trap count for
1001 // that reason did overflow, this includes the overflow trap count of the method.
1002 // If 'reason' is null, the sum of the traps for all reasons will be returned.
1003 // This number includes the overflow trap count if the trap count for any reason
1004 // did overflow.
1005 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
1006 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1007 CHECK_JNI_EXCEPTION_(env, 0);
1008 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1009 uint cnt = 0;
1010 MethodData* mdo = mh->method_data();
1011 if (mdo != nullptr) {
1012 ResourceMark rm(THREAD);
1013 char* reason_str = (reason_obj == nullptr) ?
1014 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1015 bool overflow = false;
1016 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
1017 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
1018 cnt = mdo->trap_count(reason);
1019 // Count in the overflow trap count on overflow
1020 if (cnt == (uint)-1) {
1021 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
1022 }
1023 break;
1024 } else if (reason_str == nullptr) {
1025 uint c = mdo->trap_count(reason);
1026 if (c == (uint)-1) {
1027 c = mdo->trap_count_limit();
1028 if (!overflow) {
1029 // Count overflow trap count just once
1030 overflow = true;
1031 c += mdo->overflow_trap_count();
1032 }
1033 }
1034 cnt += c;
1035 }
1036 }
1037 }
1038 return cnt;
1039 WB_END
1040
1041 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1042 if (reason_obj == nullptr && action_obj == nullptr) {
1043 return Deoptimization::total_deoptimization_count();
1044 }
1045 ResourceMark rm(THREAD);
1046 const char *reason_str = (reason_obj == nullptr) ?
1047 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1048 const char *action_str = (action_obj == nullptr) ?
1049 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1050
1051 return Deoptimization::deoptimization_count(reason_str, action_str);
1052 WB_END
1053
1054 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1055 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1056 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1057 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1058 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1059 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1060 WB_END
1061
1062 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1063 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1064 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1065 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1066 bool result = mh->dont_inline();
1067 mh->set_dont_inline(value == JNI_TRUE);
1068 return result;
1069 WB_END
1070
1071 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1072 if (comp_level == CompLevel_any) {
1073 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1074 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1075 } else {
1076 return CompileBroker::queue_size(comp_level);
1077 }
1078 WB_END
1079
1080 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1081 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1082 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1083 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1084 bool result = mh->force_inline();
1085 mh->set_force_inline(value == JNI_TRUE);
1086 return result;
1087 WB_END
1088
1089 #ifdef LINUX
1090 bool WhiteBox::validate_cgroup(bool cgroups_v2_enabled,
1091 const char* controllers_file,
1092 const char* proc_self_cgroup,
1093 const char* proc_self_mountinfo,
1094 u1* cg_flags) {
1095 CgroupInfo cg_infos[CG_INFO_LENGTH];
1096 return CgroupSubsystemFactory::determine_type(cg_infos, cgroups_v2_enabled, controllers_file,
1097 proc_self_cgroup,
1098 proc_self_mountinfo, cg_flags);
1099 }
1100 #endif
1101
1102 bool WhiteBox::is_asan_enabled() {
1103 #ifdef ADDRESS_SANITIZER
1104 return true;
1105 #else
1106 return false;
1107 #endif
1108 }
1109
1110 bool WhiteBox::is_ubsan_enabled() {
1111 #ifdef UNDEFINED_BEHAVIOR_SANITIZER
1112 return true;
1113 #else
1114 return false;
1115 #endif
1116 }
1117
1118 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1119 // Screen for unavailable/bad comp level or null method
1120 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1121 if (method == nullptr) {
1122 tty->print_cr("WB error: request to compile null method");
1123 return false;
1124 }
1125 if (method->is_abstract()) {
1126 tty->print_cr("WB error: request to compile abstract method");
1127 return false;
1128 }
1129 if (comp_level > CompilationPolicy::highest_compile_level()) {
1130 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1131 return false;
1132 }
1133 if (comp == nullptr) {
1134 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1135 return false;
1136 }
1137
1138 // Check if compilation is blocking
1139 methodHandle mh(THREAD, method);
1140 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1141 bool is_blocking = !directive->BackgroundCompilationOption;
1142 DirectivesStack::release(directive);
1143
1144 // Compile method and check result
1145 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1146 MutexLocker mu(THREAD, Compile_lock);
1147 bool is_queued = mh->queued_for_compilation();
1148 if ((!is_blocking && is_queued) || nm != nullptr) {
1149 return true;
1150 }
1151 // Check code again because compilation may be finished before Compile_lock is acquired.
1152 if (bci == InvocationEntryBci) {
1153 nmethod* code = mh->code();
1154 if (code != nullptr) {
1155 return true;
1156 }
1157 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1158 return true;
1159 }
1160 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1161 mh->print_short_name(tty);
1162 tty->cr();
1163 if (is_blocking && is_queued) {
1164 tty->print_cr("WB error: blocking compilation is still in queue!");
1165 }
1166 return false;
1167 }
1168
1169 size_t WhiteBox::get_in_use_monitor_count() {
1170 return ObjectSynchronizer::_in_use_list.count();
1171 }
1172
1173 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1174 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1175 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1176 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1177 WB_END
1178
1179 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1180 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1181 Method* clinit = ik->class_initializer();
1182 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1183 return false;
1184 }
1185 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1186 WB_END
1187
1188 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1189 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1190 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1191
1192 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1193 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1194 bool result = directive->PrintAssemblyOption;
1195 DirectivesStack::release(directive);
1196
1197 return result;
1198 WB_END
1199
1200 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1201 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1202 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1203
1204 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1205
1206 ResourceMark rm(THREAD);
1207 const char* error_msg = nullptr;
1208 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1209 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1210
1211 if (m == nullptr) {
1212 assert(error_msg != nullptr, "Always have an error message");
1213 tty->print_cr("Got error: %s", error_msg);
1214 return -1; // Pattern failed
1215 }
1216
1217 // Pattern works - now check if it matches
1218 int result;
1219 if (m->match(mh, InlineMatcher::force_inline)) {
1220 result = 2; // Force inline match
1221 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1222 result = 1; // Dont inline match
1223 } else {
1224 result = 0; // No match
1225 }
1226 delete m;
1227 return result;
1228 WB_END
1229
1230 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1231 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1232 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1233
1234 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1235
1236 ResourceMark rm;
1237 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1238
1239 const char* error_msg = nullptr;
1240
1241 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1242 if (m == nullptr) {
1243 assert(error_msg != nullptr, "Must have error_msg");
1244 tty->print_cr("Got error: %s", error_msg);
1245 return -1;
1246 }
1247
1248 // Pattern works - now check if it matches
1249 int result = m->matches(mh);
1250 delete m;
1251 assert(result == 0 || result == 1, "Result out of range");
1252 return result;
1253 WB_END
1254
1255 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1256 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1257 CHECK_JNI_EXCEPTION(env);
1258 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1259
1260 MethodData* mdo = mh->method_data();
1261 if (mdo == nullptr) {
1262 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1263 mdo = mh->method_data();
1264 }
1265 mdo->init();
1266 InvocationCounter* icnt = mdo->invocation_counter();
1267 InvocationCounter* bcnt = mdo->backedge_counter();
1268 // set i-counter according to CompilationPolicy::is_method_profiled
1269 icnt->set(Tier4MinInvocationThreshold);
1270 bcnt->set(Tier4CompileThreshold);
1271 WB_END
1272
1273 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1274 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1275 CHECK_JNI_EXCEPTION(env);
1276 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1277 MutexLocker mu(THREAD, Compile_lock);
1278 MethodData* mdo = mh->method_data();
1279 MethodCounters* mcs = mh->method_counters();
1280
1281 if (mdo != nullptr) {
1282 mdo->init();
1283 ResourceMark rm(THREAD);
1284 int arg_count = mdo->method()->size_of_parameters();
1285 for (int i = 0; i < arg_count; i++) {
1286 mdo->set_arg_modified(i, 0);
1287 }
1288 mdo->clean_method_data(/*always_clean*/true);
1289 }
1290
1291 mh->clear_is_not_c1_compilable();
1292 mh->clear_is_not_c2_compilable();
1293 mh->clear_is_not_c2_osr_compilable();
1294 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1295 if (mcs != nullptr) {
1296 mcs->clear_counters();
1297 }
1298 WB_END
1299
1300 template <typename T, int type_enum>
1301 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1302 if (name == nullptr) {
1303 return false;
1304 }
1305 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1306 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1307 CHECK_JNI_EXCEPTION_(env, false);
1308 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1309 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1310 env->ReleaseStringUTFChars(name, flag_name);
1311 return (result == JVMFlag::SUCCESS);
1312 }
1313
1314 template <typename T, int type_enum>
1315 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1316 if (name == nullptr) {
1317 return false;
1318 }
1319 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1320 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1321 CHECK_JNI_EXCEPTION_(env, false);
1322 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1323 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1324 env->ReleaseStringUTFChars(name, flag_name);
1325 return (result == JVMFlag::SUCCESS);
1326 }
1327
1328 template <typename T>
1329 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1330 ResourceMark rm(thread);
1331 jclass clazz = env->FindClass(name->as_C_string());
1332 CHECK_JNI_EXCEPTION_(env, nullptr);
1333 jmethodID methodID = env->GetStaticMethodID(clazz,
1334 vmSymbols::valueOf_name()->as_C_string(),
1335 sig->as_C_string());
1336 CHECK_JNI_EXCEPTION_(env, nullptr);
1337 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1338 CHECK_JNI_EXCEPTION_(env, nullptr);
1339 return result;
1340 }
1341
1342 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1343 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1344 }
1345 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1346 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1347 }
1348 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1349 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1350 }
1351 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1352 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1353 }*/
1354 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1355 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1356 }
1357
1358 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1359 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1360 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1361 CHECK_JNI_EXCEPTION_(env, nullptr);
1362 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1363 env->ReleaseStringUTFChars(name, flag_name);
1364 return result;
1365 }
1366
1367 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1368 const JVMFlag* flag = getVMFlag(thread, env, name);
1369 return (flag != nullptr) && flag->is_constant_in_binary();
1370 WB_END
1371
1372 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1373 const JVMFlag* flag = getVMFlag(thread, env, name);
1374 return (flag != nullptr) && flag->is_default();
1375 WB_END
1376
1377 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1378 const JVMFlag* flag = getVMFlag(thread, env, name);
1379 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1380 WB_END
1381
1382 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1383 bool result;
1384 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1385 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1386 return booleanBox(thread, env, result);
1387 }
1388 return nullptr;
1389 WB_END
1390
1391 template <typename T, int type_enum>
1392 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1393 T result;
1394 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1395 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1396 return longBox(thread, env, result);
1397 }
1398 return nullptr;
1399 }
1400
1401 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1402 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1403 WB_END
1404
1405 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1406 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1407 WB_END
1408
1409 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1410 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1411 WB_END
1412
1413 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1414 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1415 WB_END
1416
1417 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1418 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1419 WB_END
1420
1421 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1422 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1423 WB_END
1424
1425 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1426 double result;
1427 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1428 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1429 return doubleBox(thread, env, result);
1430 }
1431 return nullptr;
1432 WB_END
1433
1434 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1435 ccstr ccstrResult;
1436 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1437 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1438 jstring result = env->NewStringUTF(ccstrResult);
1439 CHECK_JNI_EXCEPTION_(env, nullptr);
1440 return result;
1441 }
1442 return nullptr;
1443 WB_END
1444
1445 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1446 bool result = value == JNI_TRUE ? true : false;
1447 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1448 WB_END
1449
1450 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1451 int result = checked_cast<int>(value);
1452 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1453 WB_END
1454
1455 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1456 uint result = checked_cast<uint>(value);
1457 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1458 WB_END
1459
1460 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1461 intx result = value;
1462 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1463 WB_END
1464
1465 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1466 uintx result = value;
1467 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1468 WB_END
1469
1470 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1471 uint64_t result = value;
1472 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1473 WB_END
1474
1475 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1476 size_t result = value;
1477 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1478 WB_END
1479
1480 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1481 double result = value;
1482 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1483 WB_END
1484
1485 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1486 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1487 const char* ccstrValue;
1488 if (value == nullptr) {
1489 ccstrValue = nullptr;
1490 }
1491 else {
1492 ccstrValue = env->GetStringUTFChars(value, nullptr);
1493 CHECK_JNI_EXCEPTION(env);
1494 }
1495 {
1496 ccstr param = ccstrValue;
1497 ThreadInVMfromNative ttvfn(thread); // back to VM
1498 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1499 assert(param == nullptr, "old value is freed automatically and not returned");
1500 }
1501 }
1502 if (value != nullptr) {
1503 env->ReleaseStringUTFChars(value, ccstrValue);
1504 }
1505 WB_END
1506
1507 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1508 WhiteBox::compilation_locked = true;
1509 WB_END
1510
1511 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1512 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1513 WhiteBox::compilation_locked = false;
1514 mo.notify_all();
1515 WB_END
1516
1517 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1518 ResourceMark rm(THREAD);
1519 int len;
1520 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1521 return (StringTable::lookup(name, len) != nullptr);
1522 WB_END
1523
1524 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1525 Universe::heap()->collect(GCCause::_wb_full_gc);
1526 WB_END
1527
1528 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1529 Universe::heap()->collect(GCCause::_wb_young_gc);
1530 WB_END
1531
1532 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1533 // static+volatile in order to force the read to happen
1534 // (not be eliminated by the compiler)
1535 static char c;
1536 static volatile char* p;
1537
1538 p = os::reserve_memory(os::vm_allocation_granularity(), mtTest);
1539 if (p == nullptr) {
1540 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1541 }
1542
1543 c = *p;
1544 WB_END
1545
1546 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1547 const char* features = VM_Version::cpu_info_string();
1548 ThreadToNativeFromVM ttn(thread);
1549 jstring features_string = env->NewStringUTF(features);
1550
1551 CHECK_JNI_EXCEPTION_(env, nullptr);
1552
1553 return features_string;
1554 WB_END
1555
1556 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1557 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1558 return CodeCache::get_code_heap(code)->code_blob_type();
1559 }
1560
1561 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1562 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1563 return CodeCache::get_code_heap(blob_type);
1564 }
1565
1566 struct CodeBlobStub {
1567 CodeBlobStub(const CodeBlob* blob) :
1568 name(os::strdup(blob->name())),
1569 size(blob->size()),
1570 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1571 address((jlong) blob),
1572 code_begin((jlong) blob->code_begin()),
1573 is_nmethod((jboolean) blob->is_nmethod()) { }
1574 ~CodeBlobStub() { os::free((void*) name); }
1575 const char* const name;
1576 const jint size;
1577 const jint blob_type;
1578 const jlong address;
1579 const jlong code_begin;
1580 const jboolean is_nmethod;
1581 };
1582
1583 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1584 ResourceMark rm;
1585 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1586 CHECK_JNI_EXCEPTION_(env, nullptr);
1587 jobjectArray result = env->NewObjectArray(6, clazz, nullptr);
1588
1589 jstring name = env->NewStringUTF(cb->name);
1590 CHECK_JNI_EXCEPTION_(env, nullptr);
1591 env->SetObjectArrayElement(result, 0, name);
1592
1593 jobject obj = integerBox(thread, env, cb->size);
1594 CHECK_JNI_EXCEPTION_(env, nullptr);
1595 env->SetObjectArrayElement(result, 1, obj);
1596
1597 obj = integerBox(thread, env, cb->blob_type);
1598 CHECK_JNI_EXCEPTION_(env, nullptr);
1599 env->SetObjectArrayElement(result, 2, obj);
1600
1601 obj = longBox(thread, env, cb->address);
1602 CHECK_JNI_EXCEPTION_(env, nullptr);
1603 env->SetObjectArrayElement(result, 3, obj);
1604
1605 obj = longBox(thread, env, cb->code_begin);
1606 CHECK_JNI_EXCEPTION_(env, nullptr);
1607 env->SetObjectArrayElement(result, 4, obj);
1608
1609 obj = booleanBox(thread, env, cb->is_nmethod);
1610 CHECK_JNI_EXCEPTION_(env, nullptr);
1611 env->SetObjectArrayElement(result, 5, obj);
1612
1613 return result;
1614 }
1615
1616 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1617 ResourceMark rm(THREAD);
1618 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1619 CHECK_JNI_EXCEPTION_(env, nullptr);
1620 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1621 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1622 jobjectArray result = nullptr;
1623 if (code == nullptr) {
1624 return result;
1625 }
1626 int comp_level = code->comp_level();
1627 int insts_size = code->insts_size();
1628
1629 ThreadToNativeFromVM ttn(thread);
1630 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1631 CHECK_JNI_EXCEPTION_(env, nullptr);
1632 result = env->NewObjectArray(5, clazz, nullptr);
1633 if (result == nullptr) {
1634 return result;
1635 }
1636
1637 CodeBlobStub stub(code);
1638 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1639 CHECK_JNI_EXCEPTION_(env, nullptr);
1640 env->SetObjectArrayElement(result, 0, codeBlob);
1641
1642 jobject level = integerBox(thread, env, comp_level);
1643 CHECK_JNI_EXCEPTION_(env, nullptr);
1644 env->SetObjectArrayElement(result, 1, level);
1645
1646 jbyteArray insts = env->NewByteArray(insts_size);
1647 CHECK_JNI_EXCEPTION_(env, nullptr);
1648 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1649 env->SetObjectArrayElement(result, 2, insts);
1650
1651 jobject id = integerBox(thread, env, code->compile_id());
1652 CHECK_JNI_EXCEPTION_(env, nullptr);
1653 env->SetObjectArrayElement(result, 3, id);
1654
1655 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1656 CHECK_JNI_EXCEPTION_(env, nullptr);
1657 env->SetObjectArrayElement(result, 4, entry_point);
1658
1659 return result;
1660 WB_END
1661
1662 WB_ENTRY(void, WB_RelocateNMethodFromMethod(JNIEnv* env, jobject o, jobject method, jint blob_type))
1663 ResourceMark rm(THREAD);
1664 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1665 CHECK_JNI_EXCEPTION(env);
1666 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1667 nmethod* code = mh->code();
1668 if (code != nullptr) {
1669 MutexLocker ml_Compile_lock(Compile_lock);
1670 CompiledICLocker ic_locker(code);
1671 MutexLocker ml_CodeCache_lock(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1672 code->relocate(static_cast<CodeBlobType>(blob_type));
1673 }
1674 WB_END
1675
1676 WB_ENTRY(void, WB_RelocateNMethodFromAddr(JNIEnv* env, jobject o, jlong addr, jint blob_type))
1677 ResourceMark rm(THREAD);
1678 CHECK_JNI_EXCEPTION(env);
1679 void* address = (void*) addr;
1680
1681 if (address == nullptr) {
1682 return;
1683 }
1684
1685 MutexLocker ml_Compile_lock(Compile_lock);
1686 MutexLocker ml_CompiledIC_lock(CompiledIC_lock, Mutex::_no_safepoint_check_flag);
1687 MutexLocker ml_CodeCache_lock(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1688
1689 // Verify that nmethod address is still valid
1690 CodeBlob* blob = CodeCache::find_blob(address);
1691 if (blob != nullptr && blob->is_nmethod()) {
1692 nmethod* code = blob->as_nmethod();
1693 if (code->is_in_use() && !code->is_unloading()) {
1694 CompiledICLocker ic_locker(code);
1695 code->relocate(static_cast<CodeBlobType>(blob_type));
1696 }
1697 }
1698 WB_END
1699
1700 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1701 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1702 BufferBlob* blob;
1703 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1704 if (full_size < size) {
1705 full_size += align_up(size - full_size, oopSize);
1706 }
1707 {
1708 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1709 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1710 if (blob != nullptr) {
1711 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1712 }
1713 }
1714 // Track memory usage statistic after releasing CodeCache_lock
1715 MemoryService::track_code_cache_memory_usage();
1716 return blob;
1717 }
1718
1719 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1720 if (size < 0) {
1721 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1722 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1723 }
1724 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1725 WB_END
1726
1727 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1728 if (addr == 0) {
1729 return;
1730 }
1731 BufferBlob::free((BufferBlob*) addr);
1732 WB_END
1733
1734 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1735 ResourceMark rm;
1736 GrowableArray<CodeBlobStub*> blobs;
1737 {
1738 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1739 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1740 if (heap == nullptr) {
1741 return nullptr;
1742 }
1743 for (CodeBlob* cb = (CodeBlob*) heap->first();
1744 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1745 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1746 new (stub) CodeBlobStub(cb);
1747 blobs.append(stub);
1748 }
1749 }
1750 ThreadToNativeFromVM ttn(thread);
1751 jobjectArray result = nullptr;
1752 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1753 CHECK_JNI_EXCEPTION_(env, nullptr);
1754 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1755 CHECK_JNI_EXCEPTION_(env, nullptr);
1756 if (result == nullptr) {
1757 return result;
1758 }
1759 int i = 0;
1760 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1761 it != blobs.end(); ++it) {
1762 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1763 CHECK_JNI_EXCEPTION_(env, nullptr);
1764 env->SetObjectArrayElement(result, i, obj);
1765 CHECK_JNI_EXCEPTION_(env, nullptr);
1766 ++i;
1767 }
1768 return result;
1769 WB_END
1770
1771 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1772 return CompileBroker::get_compilation_activity_mode();
1773 WB_END
1774
1775 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1776 if (addr == 0) {
1777 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1778 "WB_GetCodeBlob: addr is null");
1779 }
1780 ThreadToNativeFromVM ttn(thread);
1781 CodeBlobStub stub((CodeBlob*) addr);
1782 return codeBlob2objectArray(thread, env, &stub);
1783 WB_END
1784
1785 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1786 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1787 CHECK_JNI_EXCEPTION_(env, 0);
1788 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1789 return (jlong) mh->method_data();
1790 WB_END
1791
1792 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1793 return (jlong) thread->stack_size();
1794 WB_END
1795
1796 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1797 return (jlong) thread->stack_overflow_state()->stack_available(
1798 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1799 WB_END
1800
1801
1802 int WhiteBox::array_bytes_to_length(size_t bytes) {
1803 return Array<u1>::bytes_to_length(bytes);
1804 }
1805
1806 ///////////////
1807 // MetaspaceTestContext and MetaspaceTestArena
1808 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1809 assert(is_aligned(commit_limit, BytesPerWord),
1810 "WB_CreateMetaspaceTestContext: commit_limit is not a multiple of the system word byte size");
1811 assert(is_aligned(reserve_limit, BytesPerWord),
1812 "WB_CreateMetaspaceTestContext: reserve_limit is not a multiple of the system word byte size");
1813 metaspace::MetaspaceTestContext* context =
1814 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit / BytesPerWord,
1815 (size_t) reserve_limit / BytesPerWord);
1816 return (jlong)p2i(context);
1817 WB_END
1818
1819 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1820 delete (metaspace::MetaspaceTestContext*) context;
1821 WB_END
1822
1823 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1824 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1825 context0->purge_area();
1826 WB_END
1827
1828 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1829 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1830 context0->print_on(tty);
1831 WB_END
1832
1833 WB_ENTRY(jlong, WB_GetTotalCommittedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1834 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1835 return (jlong)context0->committed_words() * BytesPerWord;
1836 WB_END
1837
1838 WB_ENTRY(jlong, WB_GetTotalUsedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1839 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1840 return (jlong)context0->used_words() * BytesPerWord;
1841 WB_END
1842
1843 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1844 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ClassMirrorHolderMetaspaceType : Metaspace::StandardMetaspaceType;
1845 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1846 return (jlong)p2i(context0->create_arena(type));
1847 WB_END
1848
1849 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1850 delete (metaspace::MetaspaceTestArena*) arena;
1851 WB_END
1852
1853 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong size))
1854 assert(is_aligned(size, BytesPerWord),
1855 "WB_AllocateFromMetaspaceTestArena: size is not a multiple of the system word byte size");
1856 metaspace::MetaspaceTestArena *arena0 = (metaspace::MetaspaceTestArena *)arena;
1857 MetaWord *p = arena0->allocate((size_t) size / BytesPerWord);
1858 return (jlong)p2i(p);
1859 WB_END
1860
1861 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong size))
1862 assert(is_aligned(size, BytesPerWord),
1863 "WB_DeallocateToMetaspaceTestArena: size is not a multiple of the system word byte size");
1864 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1865 arena0->deallocate((MetaWord*)p, (size_t) size / BytesPerWord);
1866 WB_END
1867
1868 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1869 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1870 WB_END
1871
1872 WB_ENTRY(jlong, WB_WordSize(JNIEnv* env))
1873 return (jlong)BytesPerWord;
1874 WB_END
1875
1876 WB_ENTRY(jlong, WB_RootChunkWordSize(JNIEnv* env))
1877 return (jlong)Metaspace::reserve_alignment_words();
1878 WB_END
1879
1880 WB_ENTRY(jboolean, WB_IsStaticallyLinked(JNIEnv* env, jobject wb))
1881 return JVM_IsStaticallyLinked();
1882 WB_END
1883
1884 //////////////
1885
1886 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1887 if (size < 0) {
1888 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1889 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1890 }
1891
1892 oop class_loader_oop = JNIHandles::resolve(class_loader);
1893 ClassLoaderData* cld = class_loader_oop != nullptr
1894 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1895 : ClassLoaderData::the_null_class_loader_data();
1896
1897 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1898
1899 return (jlong)(uintptr_t)metadata;
1900 WB_END
1901
1902 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1903 jstring version, jstring location, jobjectArray packages))
1904 Handle h_module (THREAD, JNIHandles::resolve(module));
1905 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1906 WB_END
1907
1908 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1909 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1910 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1911 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1912 WB_END
1913
1914 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1915 Handle h_module (THREAD, JNIHandles::resolve(module));
1916 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1917 WB_END
1918
1919 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1920 Handle h_module (THREAD, JNIHandles::resolve(module));
1921 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1922 WB_END
1923
1924 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1925 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1926 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1927 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1928 WB_END
1929
1930 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1931 if (inc < 0) {
1932 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1933 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1934 }
1935
1936 jlong max_size_t = (jlong) ((size_t) -1);
1937 if (inc > max_size_t) {
1938 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1939 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1940 }
1941
1942 size_t new_cap_until_GC = 0;
1943 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1944 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1945 if (!success) {
1946 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1947 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1948 "due to contention with another thread");
1949 }
1950 return (jlong) new_cap_until_GC;
1951 WB_END
1952
1953 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1954 return (jlong) MetaspaceGC::capacity_until_GC();
1955 WB_END
1956
1957 // The function is only valid when CDS is available.
1958 WB_ENTRY(jlong, WB_AOTMetaspaceRegionAlignment(JNIEnv* env, jobject wb))
1959 #if INCLUDE_CDS
1960 return (jlong)AOTMetaspace::core_region_alignment();
1961 #else
1962 ShouldNotReachHere();
1963 return 0L;
1964 #endif
1965 WB_END
1966
1967 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1968 oop obj_oop = JNIHandles::resolve(obj);
1969 return (jboolean) obj_oop->mark().has_monitor();
1970 WB_END
1971
1972 WB_ENTRY(jboolean, WB_IsAsanEnabled(JNIEnv* env))
1973 return (jboolean) WhiteBox::is_asan_enabled();
1974 WB_END
1975
1976 WB_ENTRY(jboolean, WB_IsUbsanEnabled(JNIEnv* env))
1977 return (jboolean) WhiteBox::is_ubsan_enabled();
1978 WB_END
1979
1980 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1981 return (jlong) WhiteBox::get_in_use_monitor_count();
1982 WB_END
1983
1984 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1985 return (jint) LockStack::CAPACITY;
1986 WB_END
1987
1988 WB_ENTRY(jboolean, WB_supportsRecursiveFastLocking(JNIEnv* env))
1989 return (jboolean) VM_Version::supports_recursive_fast_locking();
1990 WB_END
1991
1992 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1993 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1994 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1995 WB_END
1996
1997 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1998 VM_ForceSafepoint force_safepoint_op;
1999 VMThread::execute(&force_safepoint_op);
2000 WB_END
2001
2002 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
2003 nullStream dev_null;
2004 ClassLoaderStatsVMOperation force_op(&dev_null);
2005 VMThread::execute(&force_op);
2006 WB_END
2007
2008 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
2009 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2010 return (jlong) ik->constants();
2011 WB_END
2012
2013 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
2014 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2015 objArrayOop resolved_refs= ik->constants()->resolved_references();
2016 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
2017 WB_END
2018
2019 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
2020 oop aoop = JNIHandles::resolve(thing);
2021 if (!aoop->is_instance()) {
2022 return nullptr;
2023 }
2024 instanceHandle ih(THREAD, (instanceOop) aoop);
2025 InstanceKlass* klass = InstanceKlass::cast(ih->klass());
2026 if (klass->nonstatic_oop_map_count() == 0) {
2027 return nullptr;
2028 }
2029 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
2030 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
2031 int oop_count = 0;
2032 while (map < end) {
2033 oop_count += map->count();
2034 map++;
2035 }
2036
2037 objArrayHandle result_array =
2038 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL);
2039 map = klass->start_of_nonstatic_oop_maps();
2040 int index = 0;
2041 while (map < end) {
2042 int offset = map->offset();
2043 for (unsigned int j = 0; j < map->count(); j++) {
2044 result_array->obj_at_put(index++, ih->obj_field(offset));
2045 offset += heapOopSize;
2046 }
2047 map++;
2048 }
2049 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
2050 WB_END
2051
2052 // Collect Object oops but not value objects...loaded from heap
2053 class CollectObjectOops : public BasicOopIterateClosure {
2054 public:
2055 GrowableArray<Handle>* _array;
2056
2057 CollectObjectOops() {
2058 _array = new GrowableArray<Handle>(128);
2059 }
2060
2061 void add_oop(oop o) {
2062 Handle oh = Handle(Thread::current(), o);
2063 if (oh != nullptr && oh->is_inline_type()) {
2064 oh->oop_iterate(this);
2065 } else {
2066 _array->append(oh);
2067 }
2068 }
2069
2070 template <class T> inline void add_oop(T* p) { add_oop(HeapAccess<>::oop_load(p)); }
2071 void do_oop(oop* o) { add_oop(o); }
2072 void do_oop(narrowOop* v) { add_oop(v); }
2073
2074 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
2075 objArrayHandle result_array =
2076 oopFactory::new_objArray_handle(vmClasses::Object_klass(), _array->length(), CHECK_NULL);
2077 for (int i = 0 ; i < _array->length(); i++) {
2078 result_array->obj_at_put(i, _array->at(i)());
2079 }
2080 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
2081 }
2082 };
2083
2084 // Collect Object oops but not value objects...loaded from frames
2085 class CollectFrameObjectOops : public BasicOopIterateClosure {
2086 public:
2087 CollectObjectOops _collect;
2088
2089 template <class T> inline void add_oop(T* p) { _collect.add_oop(RawAccess<>::oop_load(p)); }
2090 void do_oop(oop* o) { add_oop(o); }
2091 void do_oop(narrowOop* v) { add_oop(v); }
2092
2093 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
2094 return _collect.create_jni_result(env, THREAD);
2095 }
2096 };
2097
2098 // Collect Object oops for the given oop, iterate through value objects
2099 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
2100 ResourceMark rm(thread);
2101 Handle objh(thread, JNIHandles::resolve(thing));
2102 CollectObjectOops collectOops;
2103 objh->oop_iterate(&collectOops);
2104 return collectOops.create_jni_result(env, THREAD);
2105 WB_END
2106
2107 // Collect Object oops for the given frame deep, iterate through value objects
2108 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
2109 KeepStackGCProcessedMark ksgcpm(THREAD);
2110 ResourceMark rm(THREAD);
2111 CollectFrameObjectOops collectOops;
2112 StackFrameStream sfs(thread, true /* update */, true /* process_frames */);
2113 while (depth > 0) { // Skip the native WB API frame
2114 sfs.next();
2115 frame* f = sfs.current();
2116 f->oops_do(&collectOops, nullptr, sfs.register_map());
2117 depth--;
2118 }
2119 return collectOops.create_jni_result(env, THREAD);
2120 WB_END
2121
2122 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
2123 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2124 ConstantPool* cp = ik->constants();
2125 if (cp->cache() == nullptr) {
2126 return -1;
2127 }
2128 return cp->resolved_field_entries_length();
2129 WB_END
2130
2131 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2132 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2133 ConstantPool* cp = ik->constants();
2134 if (cp->cache() == nullptr) {
2135 return -1;
2136 }
2137 return cp->resolved_field_entry_at(index)->constant_pool_index();
2138 WB_END
2139
2140 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
2141 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2142 ConstantPool* cp = ik->constants();
2143 if (cp->cache() == nullptr) {
2144 return -1;
2145 }
2146 return cp->resolved_method_entries_length();
2147 WB_END
2148
2149 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2150 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2151 ConstantPool* cp = ik->constants();
2152 if (cp->cache() == nullptr) {
2153 return -1;
2154 }
2155 return cp->resolved_method_entry_at(index)->constant_pool_index();
2156 WB_END
2157
2158 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
2159 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2160 ConstantPool* cp = ik->constants();
2161 if (cp->cache() == nullptr) {
2162 return -1;
2163 }
2164 return cp->resolved_indy_entries_length();
2165 WB_END
2166
2167 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2168 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2169 ConstantPool* cp = ik->constants();
2170 if (cp->cache() == nullptr) {
2171 return -1;
2172 }
2173 return cp->resolved_indy_entry_at(index)->constant_pool_index();
2174 WB_END
2175
2176 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
2177 ThreadToNativeFromVM ttnfv(thread);
2178 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2179 ResourceMark rm;
2180 stringStream st;
2181 {
2182 ThreadInVMfromNative ttvfn(thread); // back to VM
2183 ClassPrinter::print_classes(c, flags, &st);
2184 }
2185 jstring result = env->NewStringUTF(st.freeze());
2186 CHECK_JNI_EXCEPTION_(env, nullptr);
2187 return result;
2188 WB_END
2189
2190 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
2191 ThreadToNativeFromVM ttnfv(thread);
2192 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2193 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
2194 ResourceMark rm;
2195 stringStream st;
2196 {
2197 ThreadInVMfromNative ttvfn(thread); // back to VM
2198 ClassPrinter::print_methods(c, m, flags, &st);
2199 }
2200 jstring result = env->NewStringUTF(st.freeze());
2201 CHECK_JNI_EXCEPTION_(env, nullptr);
2202 return result;
2203 WB_END
2204
2205 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
2206 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
2207 VMThread::execute(&clear_ics);
2208 WB_END
2209
2210 template <typename T>
2211 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
2212 assert(value != nullptr, "sanity");
2213 if (method == nullptr || name == nullptr) {
2214 return false;
2215 }
2216 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2217 CHECK_JNI_EXCEPTION_(env, false);
2218 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2219 // can't be in VM when we call JNI
2220 ThreadToNativeFromVM ttnfv(thread);
2221 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2222 CHECK_JNI_EXCEPTION_(env, false);
2223 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
2224 env->ReleaseStringUTFChars(name, flag_name);
2225 if (option == CompileCommandEnum::Unknown) {
2226 return false;
2227 }
2228 if (!CompilerOracle::option_matches_type(option, *value)) {
2229 return false;
2230 }
2231 return CompilerOracle::has_option_value(mh, option, *value);
2232 }
2233
2234 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2235 bool result;
2236 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2237 // can't be in VM when we call JNI
2238 ThreadToNativeFromVM ttnfv(thread);
2239 return booleanBox(thread, env, result);
2240 }
2241 return nullptr;
2242 WB_END
2243
2244 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2245 intx result;
2246 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2247 // can't be in VM when we call JNI
2248 ThreadToNativeFromVM ttnfv(thread);
2249 return longBox(thread, env, result);
2250 }
2251 return nullptr;
2252 WB_END
2253
2254 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2255 uintx result;
2256 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2257 // can't be in VM when we call JNI
2258 ThreadToNativeFromVM ttnfv(thread);
2259 return longBox(thread, env, result);
2260 }
2261 return nullptr;
2262 WB_END
2263
2264 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2265 double result;
2266 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2267 // can't be in VM when we call JNI
2268 ThreadToNativeFromVM ttnfv(thread);
2269 return doubleBox(thread, env, result);
2270 }
2271 return nullptr;
2272 WB_END
2273
2274 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2275 ccstr ccstrResult;
2276 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2277 // can't be in VM when we call JNI
2278 ThreadToNativeFromVM ttnfv(thread);
2279 jstring result = env->NewStringUTF(ccstrResult);
2280 CHECK_JNI_EXCEPTION_(env, nullptr);
2281 return result;
2282 }
2283 return nullptr;
2284 WB_END
2285
2286 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2287 const char* p = CDSConfig::default_archive_path();
2288 ThreadToNativeFromVM ttn(thread);
2289 jstring path_string = env->NewStringUTF(p);
2290
2291 CHECK_JNI_EXCEPTION_(env, nullptr);
2292
2293 return path_string;
2294 WB_END
2295
2296 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2297 return CDSConfig::is_using_archive();
2298 WB_END
2299
2300 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2301 #if INCLUDE_CDS
2302 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2303 #else
2304 ShouldNotReachHere();
2305 return (jint)-1;
2306 #endif
2307 WB_END
2308
2309 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2310 #if INCLUDE_CDS
2311 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2312 #else
2313 ShouldNotReachHere();
2314 return (jint)-1;
2315 #endif
2316 WB_END
2317
2318 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2319 return FileMapInfo::memory_mapping_failed();
2320 WB_END
2321
2322 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2323 if (!HeapShared::is_loading_mapping_mode()) {
2324 return false;
2325 }
2326 ResourceMark rm(THREAD);
2327 oop str_oop = JNIHandles::resolve(str);
2328 int length;
2329 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2330 return StringTable::lookup_shared(chars, length) == str_oop;
2331 WB_END
2332
2333 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2334 return (jboolean)AOTMetaspace::in_aot_cache(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2335 WB_END
2336
2337 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2338 return AOTMappedHeapLoader::is_mapped();
2339 WB_END
2340
2341 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2342 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2343 if (!k->is_instance_klass()) {
2344 return;
2345 }
2346 InstanceKlass *ik = InstanceKlass::cast(k);
2347 ik->link_class(THREAD); // may throw verification error
2348 WB_END
2349
2350 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2351 return AOTMappedHeapLoader::is_mapped();
2352 WB_END
2353
2354 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2355 #if INCLUDE_CDS
2356 // An exploded build inhibits use of CDS. Therefore, for the
2357 // purpose of testing, the JVM can be treated as not having CDS
2358 // built in at all.
2359 return ClassLoader::has_jrt_entry();
2360 #else
2361 return false;
2362 #endif // INCLUDE_CDS
2363 WB_END
2364
2365 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2366 #if COMPILER2_OR_JVMCI
2367 return true;
2368 #else
2369 return false;
2370 #endif
2371 WB_END
2372
2373 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2374 #if INCLUDE_JVMCI
2375 return JVMCIGlobals::gc_supports_jvmci();
2376 #else
2377 return false;
2378 #endif
2379 WB_END
2380
2381 static bool canWriteJavaHeapArchive() {
2382 return !CDSConfig::are_vm_options_incompatible_with_dumping_heap();
2383 }
2384
2385 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2386 return canWriteJavaHeapArchive();
2387 WB_END
2388
2389 WB_ENTRY(jboolean, WB_CanWriteMappedJavaHeapArchive(JNIEnv* env))
2390 return canWriteJavaHeapArchive() && !AOTStreamableObjects;
2391 WB_END
2392
2393 WB_ENTRY(jboolean, WB_CanWriteStreamedJavaHeapArchive(JNIEnv* env))
2394 return canWriteJavaHeapArchive() && AOTStreamableObjects;
2395 WB_END
2396
2397 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2398 #if INCLUDE_JFR
2399 return true;
2400 #else
2401 return false;
2402 #endif // INCLUDE_JFR
2403 WB_END
2404
2405 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2406 #if defined(DTRACE_ENABLED)
2407 return true;
2408 #else
2409 return false;
2410 #endif // DTRACE_ENABLED
2411 WB_END
2412
2413 #if INCLUDE_CDS
2414
2415 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2416 ResourceMark rm;
2417 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2418 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2419 return result;
2420 WB_END
2421
2422 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2423 ResourceMark rm;
2424 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2425 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2426 return result;
2427 WB_END
2428
2429 #endif // INCLUDE_CDS
2430
2431 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2432 class ReadMonitorsHandshakeClosure : public HandshakeClosure {
2433 jboolean _executed;
2434
2435 void do_thread(Thread* th) {
2436 JavaThread* jt = JavaThread::cast(th);
2437 ResourceMark rm;
2438
2439 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2440
2441 if (!jt->has_last_Java_frame()) {
2442 return;
2443 }
2444 RegisterMap rmap(jt,
2445 RegisterMap::UpdateMap::include,
2446 RegisterMap::ProcessFrames::include,
2447 RegisterMap::WalkContinuation::skip);
2448 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2449 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2450 if (monitors != nullptr) {
2451 int len = monitors->length();
2452 // Walk monitors youngest to oldest
2453 for (int i = len - 1; i >= 0; i--) {
2454 MonitorInfo* mon_info = monitors->at(i);
2455 if (mon_info->eliminated()) continue;
2456 oop owner = mon_info->owner();
2457 if (owner != nullptr) {
2458 info->append(mon_info);
2459 }
2460 }
2461 }
2462 }
2463 _executed = true;
2464 }
2465
2466 public:
2467 ReadMonitorsHandshakeClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2468 jboolean executed() const { return _executed; }
2469 };
2470
2471 ReadMonitorsHandshakeClosure rmhc;
2472 if (thread_handle != nullptr) {
2473 ThreadsListHandle tlh;
2474 JavaThread* target = nullptr;
2475 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2476 if (is_alive) {
2477 Handshake::execute(&rmhc, &tlh, target);
2478 }
2479 }
2480 return rmhc.executed();
2481 WB_END
2482
2483 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2484 class TraceSelfHandshakeClosure : public HandshakeClosure {
2485 jint _num_threads_completed;
2486
2487 void do_thread(Thread* th) {
2488 JavaThread* jt = JavaThread::cast(th);
2489 ResourceMark rm;
2490
2491 jt->print_on(tty);
2492 jt->print_stack_on(tty);
2493 tty->cr();
2494 AtomicAccess::inc(&_num_threads_completed);
2495 }
2496
2497 public:
2498 TraceSelfHandshakeClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2499
2500 jint num_threads_completed() const { return _num_threads_completed; }
2501 };
2502 TraceSelfHandshakeClosure tshc(Thread::current());
2503
2504 if (all_threads) {
2505 Handshake::execute(&tshc);
2506 } else if (thread_handle != nullptr) {
2507 ThreadsListHandle tlh;
2508 JavaThread* target = nullptr;
2509 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2510 if (is_alive) {
2511 Handshake::execute(&tshc, &tlh, target);
2512 }
2513 }
2514 return tshc.num_threads_completed();
2515 WB_END
2516
2517 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2518 class TraceSelfHandshakeClosure : public AsyncHandshakeClosure {
2519 JavaThread* _self;
2520 void do_thread(Thread* th) {
2521 assert(th->is_Java_thread(), "sanity");
2522 // AsynchHandshake handshakes are only executed by target.
2523 assert(_self == th, "Must be");
2524 assert(Thread::current() == th, "Must be");
2525 JavaThread* jt = JavaThread::cast(th);
2526 ResourceMark rm;
2527 jt->print_on(tty);
2528 jt->print_stack_on(tty);
2529 tty->cr();
2530 }
2531
2532 public:
2533 TraceSelfHandshakeClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2534 };
2535 if (thread_handle != nullptr) {
2536 ThreadsListHandle tlh;
2537 JavaThread* target = nullptr;
2538 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2539 if (is_alive) {
2540 TraceSelfHandshakeClosure* tshc = new TraceSelfHandshakeClosure(target);
2541 Handshake::execute(tshc, target);
2542 }
2543 }
2544 WB_END
2545
2546 static volatile int _emulated_lock = 0;
2547
2548 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2549 JavaThread* self = JavaThread::current();
2550
2551 {
2552 // Before trying to acquire the lock transition into a safepoint safe state.
2553 // Otherwise if either suspender or suspendee blocks for a safepoint
2554 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2555 // the lock without allowing the safepoint to progress.
2556 ThreadBlockInVM tbivm(self);
2557
2558 // We will deadlock here if we are 'suspender' and 'suspendee'
2559 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2560 // at the right place.
2561 while (AtomicAccess::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2562 assert(_emulated_lock == 1, "Must be locked");
2563
2564 // Sleep much longer in suspendee to force situation where
2565 // 'suspender' is waiting above to acquire lock.
2566 os::naked_short_sleep(suspender ? 1 : 10);
2567 }
2568 AtomicAccess::store(&_emulated_lock, 0);
2569 WB_END
2570
2571 // Some convenience methods to deal with objects from java
2572 int WhiteBox::offset_for_field(const char* field_name, oop object,
2573 Symbol* signature_symbol) {
2574 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2575
2576 //Only non-array oops have fields. Don't call this function on arrays!
2577 InstanceKlass* ik = InstanceKlass::cast(object->klass());
2578
2579 //Create symbols to look for in the class
2580 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2581
2582 //To be filled in with an offset of the field we're looking for
2583 fieldDescriptor fd;
2584
2585 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2586 if (res == nullptr) {
2587 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2588 name_symbol->as_C_string());
2589 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2590 }
2591
2592 //fetch the field at the offset we've found
2593 int dest_offset = fd.offset();
2594
2595 return dest_offset;
2596 }
2597
2598
2599 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2600 int offset = offset_for_field(field_name, object,
2601 vmSymbols::string_signature());
2602 oop string = object->obj_field(offset);
2603 if (string == nullptr) {
2604 return nullptr;
2605 }
2606 const char* ret = java_lang_String::as_utf8_string(string);
2607 return ret;
2608 }
2609
2610 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2611 int offset =
2612 offset_for_field(field_name, object, vmSymbols::bool_signature());
2613 bool ret = (object->bool_field(offset) == JNI_TRUE);
2614 return ret;
2615 }
2616
2617 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2618 ResourceMark rm;
2619 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2620 const char* klass_name = klass->external_name();
2621
2622 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2623
2624 // one by one registration natives for exception catching
2625 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2626 CHECK_JNI_EXCEPTION(env);
2627 for (int i = 0, n = method_count; i < n; ++i) {
2628 // Skip dummy entries
2629 if (method_array[i].fnPtr == nullptr) continue;
2630 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2631 jthrowable throwable_obj = env->ExceptionOccurred();
2632 if (throwable_obj != nullptr) {
2633 env->ExceptionClear();
2634 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2635 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2636 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2637 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2638 klass_name, method_array[i].name, method_array[i].signature);
2639 }
2640 } else {
2641 // Registration failed unexpectedly.
2642 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2643 klass_name, method_array[i].name, method_array[i].signature);
2644 env->UnregisterNatives(wbclass);
2645 break;
2646 }
2647 }
2648 }
2649 }
2650
2651 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2652 // can't be in VM when we call JNI
2653 ThreadToNativeFromVM ttnfv(thread);
2654 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2655 CHECK_JNI_EXCEPTION_(env, 0);
2656 int ret;
2657 {
2658 ThreadInVMfromNative ttvfn(thread); // back to VM
2659 ret = DirectivesParser::parse_string(dir, tty);
2660 }
2661 env->ReleaseStringUTFChars(compDirect, dir);
2662 // -1 for error parsing directive. Return 0 as number of directives added.
2663 if (ret == -1) {
2664 ret = 0;
2665 }
2666 return (jint) ret;
2667 WB_END
2668
2669 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2670 DirectivesStack::pop(count);
2671 WB_END
2672
2673 // Checks that the library libfile has the noexecstack bit set.
2674 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2675 jboolean ret = false;
2676 #ifdef LINUX
2677 // Can't be in VM when we call JNI.
2678 ThreadToNativeFromVM ttnfv(thread);
2679 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2680 CHECK_JNI_EXCEPTION_(env, 0);
2681 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2682 env->ReleaseStringUTFChars(libfile, lf);
2683 #endif
2684 return ret;
2685 WB_END
2686
2687 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2688 LINUX_ONLY(return OSContainer::is_containerized();)
2689 return false;
2690 WB_END
2691
2692 // Physical memory of the host machine (including containers)
2693 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2694 LINUX_ONLY(return static_cast<jlong>(os::Linux::physical_memory());)
2695 return static_cast<jlong>(os::physical_memory());
2696 WB_END
2697
2698 // Available memory of the host machine (container-aware)
2699 WB_ENTRY(jlong, WB_HostAvailableMemory(JNIEnv* env, jobject o))
2700 physical_memory_size_type avail_mem = 0;
2701 // Return value ignored - defaulting to 0 on failure.
2702 (void)os::available_memory(avail_mem);
2703 return static_cast<jlong>(avail_mem);
2704 WB_END
2705
2706 // Physical swap of the host machine (including containers), Linux only.
2707 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2708 #ifdef LINUX
2709 physical_memory_size_type swap_val = 0;
2710 if (!os::Linux::host_swap(swap_val)) {
2711 return -1; // treat as unlimited
2712 }
2713 return static_cast<jlong>(swap_val);
2714 #endif
2715 return -1; // Not used/implemented on other platforms
2716 WB_END
2717
2718 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2719 jobject o,
2720 jboolean cgroups_v2_enabled,
2721 jstring controllers_file,
2722 jstring proc_self_cgroup,
2723 jstring proc_self_mountinfo))
2724 jint ret = 0;
2725 #ifdef LINUX
2726 ThreadToNativeFromVM ttnfv(thread);
2727 const char* c_file = env->GetStringUTFChars(controllers_file, nullptr);
2728 CHECK_JNI_EXCEPTION_(env, 0);
2729 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2730 CHECK_JNI_EXCEPTION_(env, 0);
2731 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2732 CHECK_JNI_EXCEPTION_(env, 0);
2733 u1 cg_type_flags = 0;
2734 // This sets cg_type_flags
2735 WhiteBox::validate_cgroup(cgroups_v2_enabled, c_file, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2736 ret = (jint)cg_type_flags;
2737 env->ReleaseStringUTFChars(controllers_file, c_file);
2738 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2739 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2740 #endif
2741 return ret;
2742 WB_END
2743
2744 // Available cpus of the host machine, Linux only.
2745 // Used in container testing.
2746 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2747 LINUX_ONLY(return os::Linux::active_processor_count();)
2748 return -1; // Not used/implemented on other platforms
2749 WB_END
2750
2751 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2752 os::print_os_info(tty);
2753 WB_END
2754
2755 // Elf decoder
2756 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2757 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2758 ElfFile::_do_not_cache_elf_section = true;
2759 #endif
2760 WB_END
2761
2762 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2763 return (jlong) ResolvedMethodTable::items_count();
2764 WB_END
2765
2766 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2767 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2768 // Return size in bytes.
2769 return k->size() * wordSize;
2770 WB_END
2771
2772 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2773 // It explains how the thread's priority field is used for test state coordination.
2774 //
2775 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2776 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2777 jlong tid = java_lang_Thread::thread_id(target_oop);
2778 JavaThread* target = java_lang_Thread::thread(target_oop);
2779
2780 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2781 ThreadsListHandle tlh;
2782
2783 // Look up the target thread by tid to ensure it is present
2784 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2785 if (t == nullptr) {
2786 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2787 }
2788
2789 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2790 // Allow target to terminate by boosting priority
2791 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2792
2793 // Now wait for the target to terminate
2794 while (!target->is_terminated()) {
2795 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2796 os::naked_short_sleep(0);
2797 }
2798
2799 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2800
2801 // Now release the GC inducing thread - we have to re-resolve the external oop that
2802 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2803 oop original = JNIHandles::resolve_non_null(target_handle);
2804 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2805
2806 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2807
2808 // The Java code should be creating garbage and triggering GC, which would potentially move
2809 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2810 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2811 // kick in.
2812 for (int i = 0; i < 5; i++) {
2813 oop original = JNIHandles::resolve_non_null(target_handle);
2814 oop current = t->threadObj();
2815 if (original != current) {
2816 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2817 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2818 } else {
2819 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2820 ThreadBlockInVM tbivm(thread);
2821 os::naked_short_sleep(50);
2822 }
2823 }
2824 WB_END
2825
2826 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2827 ResourceMark rm; // for verify
2828 stringStream st;
2829 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2830 frame* current_frame = fst.current();
2831 if (log) {
2832 current_frame->print_value_on(&st);
2833 }
2834 current_frame->verify(fst.register_map());
2835 }
2836 if (log) {
2837 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2838 tty->print_raw(st.freeze());
2839 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2840 }
2841 WB_END
2842
2843 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2844 #if INCLUDE_JVMTI
2845 return JNI_TRUE;
2846 #else
2847 return JNI_FALSE;
2848 #endif
2849 WB_END
2850
2851 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2852 os::naked_short_sleep(time);
2853 WB_END
2854
2855 WB_ENTRY(void, WB_BusyWaitCPUTime(JNIEnv* env, jobject wb, jint time))
2856 ThreadToNativeFromVM ttn(thread);
2857 u8 start = os::current_thread_cpu_time();
2858 u8 target_duration = time * (u8)1000000;
2859 while (os::current_thread_cpu_time() - start < target_duration) {
2860 for (volatile int i = 0; i < 1000000; i++);
2861 }
2862 WB_END
2863
2864 WB_ENTRY(jboolean, WB_CPUSamplerSetOutOfStackWalking(JNIEnv* env, jobject wb, jboolean enable))
2865 #if defined(ASSERT) && INCLUDE_JFR && defined(LINUX)
2866 return JfrCPUTimeThreadSampling::set_out_of_stack_walking_enabled(enable == JNI_TRUE) ? JNI_TRUE : JNI_FALSE;
2867 #else
2868 return JNI_FALSE;
2869 #endif
2870 WB_END
2871
2872 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2873 ThreadToNativeFromVM ttn(thread);
2874 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2875 CHECK_JNI_EXCEPTION_(env, nullptr);
2876 return info_string;
2877 WB_END
2878
2879 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2880 #if INCLUDE_G1GC
2881 if (!UseG1GC) {
2882 ShouldNotReachHere();
2883 return;
2884 }
2885 oop obj = JNIHandles::resolve(o);
2886 G1CollectedHeap::heap()->pin_object(thread, obj);
2887 #else
2888 ShouldNotReachHere();
2889 #endif // INCLUDE_G1GC
2890 WB_END
2891
2892 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2893 #if INCLUDE_G1GC
2894 if (!UseG1GC) {
2895 ShouldNotReachHere();
2896 return;
2897 }
2898 oop obj = JNIHandles::resolve(o);
2899 G1CollectedHeap::heap()->unpin_object(thread, obj);
2900 #else
2901 ShouldNotReachHere();
2902 #endif // INCLUDE_G1GC
2903 WB_END
2904
2905 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2906 if (!Continuations::enabled()) {
2907 tty->print_cr("WB error: must be Continuations::enabled()!");
2908 return JNI_FALSE;
2909 }
2910 jboolean result = false;
2911 #if INCLUDE_JVMTI
2912 if (enable) {
2913 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2914 } else {
2915 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2916 }
2917 #endif
2918 return result;
2919 WB_END
2920
2921 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2922 void* const from = (void*)addr;
2923 void* const to = (void*)(addr + size);
2924 if (from > to) {
2925 os::pretouch_memory(from, to, os::vm_page_size());
2926 }
2927 WB_END
2928
2929 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2930 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2931 WB_END
2932
2933 // Reports resident set size (RSS) in bytes
2934 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2935 return os::rss();
2936 WB_END
2937
2938 WB_ENTRY(void, WB_ControlledCrash(JNIEnv* env, jobject o, jint how))
2939 #ifdef ASSERT
2940 VMError::controlled_crash(how);
2941 #else
2942 THROW_MSG(vmSymbols::java_lang_UnsupportedOperationException(), "Only available in debug builds");
2943 #endif
2944 WB_END
2945
2946 #define CC (char*)
2947
2948 static JNINativeMethod methods[] = {
2949 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2950 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2951 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2952 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2953 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2954 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2955 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2956 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2957 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2958 {CC"shipsFullDebugInfo", CC"()Z", (void*)&WB_ShipDebugInfoFull},
2959 {CC"shipsPublicDebugInfo", CC"()Z", (void*)&WB_ShipDebugInfoPublic},
2960 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2961 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2962 {CC"parseCommandLine0",
2963 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2964 (void*) &WB_ParseCommandLine
2965 },
2966 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2967 (void*)&WB_AddToBootstrapClassLoaderSearch},
2968 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2969 (void*)&WB_AddToSystemClassLoaderSearch},
2970 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2971 (void*)&WB_GetCompressedOopsMaxHeapSize},
2972 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2973 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2974 {CC"decodeNKlassAndAccessKlass",CC"(I)V", (void*)&WB_DecodeNKlassAndAccessKlass},
2975 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2976 #if INCLUDE_CDS
2977 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2978 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2979 #endif
2980 #if INCLUDE_G1GC
2981 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2982 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2983 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2984 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2985 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2986 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2987 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2988 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2989 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2990 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2991 (void*)&WB_G1AuxiliaryMemoryUsage },
2992 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2993 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2994 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2995 #endif // INCLUDE_G1GC
2996 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2997 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2998 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2999 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
3000 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
3001 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
3002 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
3003 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
3004 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
3005 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
3006 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
3007 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
3008 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
3009 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
3010 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
3011 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
3012 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
3013 (void*)&WB_DeoptimizeMethod },
3014 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
3015 (void*)&WB_IsMethodCompiled },
3016 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
3017 (void*)&WB_IsMethodCompilable},
3018 {CC"isMethodQueuedForCompilation0",
3019 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
3020 {CC"isIntrinsicAvailable0",
3021 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
3022 (void*)&WB_IsIntrinsicAvailable},
3023 {CC"makeMethodNotCompilable0",
3024 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
3025 {CC"testSetDontInlineMethod0",
3026 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
3027 {CC"getMethodCompilationLevel0",
3028 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
3029 {CC"getMethodDecompileCount0",
3030 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
3031 {CC"getMethodTrapCount0",
3032 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
3033 (void*)&WB_GetMethodTrapCount},
3034 {CC"getDeoptCount0",
3035 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
3036 {CC"getMethodEntryBci0",
3037 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
3038 {CC"getCompileQueueSize",
3039 CC"(I)I", (void*)&WB_GetCompileQueueSize},
3040 {CC"testSetForceInlineMethod0",
3041 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
3042 {CC"enqueueMethodForCompilation0",
3043 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
3044 {CC"enqueueInitializerForCompilation0",
3045 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
3046 {CC"markMethodProfiled",
3047 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
3048 {CC"clearMethodState0",
3049 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
3050 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
3051 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
3052 {CC"matchesMethod",
3053 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
3054 (void*)&WB_MatchesMethod},
3055 {CC"matchesInline",
3056 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
3057 (void*)&WB_MatchesInline},
3058 {CC"shouldPrintAssembly",
3059 CC"(Ljava/lang/reflect/Executable;I)Z",
3060 (void*)&WB_ShouldPrintAssembly},
3061
3062 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
3063 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
3064 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
3065 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
3066 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
3067 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
3068 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
3069 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
3070 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
3071 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
3072 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
3073 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
3074 (void*)&WB_SetStringVMFlag},
3075 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
3076 (void*)&WB_GetBooleanVMFlag},
3077 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3078 (void*)&WB_GetIntVMFlag},
3079 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3080 (void*)&WB_GetUintVMFlag},
3081 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3082 (void*)&WB_GetIntxVMFlag},
3083 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3084 (void*)&WB_GetUintxVMFlag},
3085 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3086 (void*)&WB_GetUint64VMFlag},
3087 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3088 (void*)&WB_GetSizeTVMFlag},
3089 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
3090 (void*)&WB_GetDoubleVMFlag},
3091 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
3092 (void*)&WB_GetStringVMFlag},
3093 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
3094 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
3095 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
3096 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
3097 {CC"allocateMetaspace",
3098 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
3099 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
3100 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
3101 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_AOTMetaspaceRegionAlignment },
3102 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
3103 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
3104 (void*)&WB_GetNMethod },
3105 {CC"relocateNMethodFromMethod0", CC"(Ljava/lang/reflect/Executable;I)V",
3106 (void*)&WB_RelocateNMethodFromMethod },
3107 {CC"relocateNMethodFromAddr", CC"(JI)V", (void*)&WB_RelocateNMethodFromAddr },
3108 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
3109 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
3110 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
3111 {CC"getCompilationActivityMode",
3112 CC"()I", (void*)&WB_GetCompilationActivityMode},
3113 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
3114 (void*)&WB_GetMethodData },
3115 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
3116 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
3117 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
3118 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
3119 (void*)&WB_DefineModule },
3120 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
3121 (void*)&WB_AddModuleExports },
3122 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
3123 (void*)&WB_AddReadsModule },
3124 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
3125 (void*)&WB_AddModuleExportsToAllUnnamed },
3126 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
3127 (void*)&WB_AddModuleExportsToAll },
3128 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
3129 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
3130 {CC"isAsanEnabled", CC"()Z", (void*)&WB_IsAsanEnabled },
3131 {CC"isUbsanEnabled", CC"()Z", (void*)&WB_IsUbsanEnabled },
3132 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
3133 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
3134 {CC"supportsRecursiveFastLocking", CC"()Z", (void*)&WB_supportsRecursiveFastLocking },
3135 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
3136 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
3137 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
3138 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
3139 {CC"getObjectsViaKlassOopMaps0",
3140 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
3141 {CC"getObjectsViaOopIterator0",
3142 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
3143 {CC"getObjectsViaFrameOopIterator",
3144 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
3145 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
3146 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
3147 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
3148 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
3149 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
3150 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
3151 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
3152 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
3153 {CC"getMethodBooleanOption",
3154 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
3155 (void*)&WB_GetMethodBooleaneOption},
3156 {CC"getMethodIntxOption",
3157 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
3158 (void*)&WB_GetMethodIntxOption},
3159 {CC"getMethodUintxOption",
3160 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
3161 (void*)&WB_GetMethodUintxOption},
3162 {CC"getMethodDoubleOption",
3163 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
3164 (void*)&WB_GetMethodDoubleOption},
3165 {CC"getMethodStringOption",
3166 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
3167 (void*)&WB_GetMethodStringOption},
3168 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
3169 (void*)&WB_GetDefaultArchivePath},
3170 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
3171 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
3172 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
3173 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
3174 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
3175 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
3176 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
3177 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
3178 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
3179 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
3180 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
3181 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
3182 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
3183 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
3184 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
3185 {CC"canWriteMappedJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteMappedJavaHeapArchive },
3186 {CC"canWriteStreamedJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteStreamedJavaHeapArchive },
3187 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
3188
3189 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
3190 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
3191 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
3192 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
3193 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
3194 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
3195 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
3196 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
3197 (void*)&WB_AddCompilerDirective },
3198 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
3199 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
3200 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
3201 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
3202 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
3203 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
3204 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
3205 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
3206 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
3207 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
3208 (void*)&WB_ConcurrentGCRunTo},
3209 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
3210 (void*)&WB_CheckLibSpecifiesNoexecstack},
3211 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
3212 {CC"validateCgroup",
3213 CC"(ZLjava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
3214 (void*)&WB_ValidateCgroup },
3215 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
3216 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
3217 {CC"hostAvailableMemory", CC"()J", (void*)&WB_HostAvailableMemory },
3218 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
3219 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
3220 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
3221 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
3222 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
3223
3224 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
3225 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
3226 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
3227 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
3228 {CC"getTotalCommittedBytesInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedBytesInMetaspaceTestContext},
3229 {CC"getTotalUsedBytesInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedBytesInMetaspaceTestContext},
3230 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
3231 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
3232 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
3233 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
3234 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
3235
3236 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
3237 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
3238 {CC"busyWaitCPUTime", CC"(I)V", (void*)&WB_BusyWaitCPUTime},
3239 {CC"cpuSamplerSetOutOfStackWalking", CC"(Z)Z", (void*)&WB_CPUSamplerSetOutOfStackWalking},
3240 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
3241
3242 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
3243 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
3244 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
3245 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
3246 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
3247 {CC"rss", CC"()J", (void*)&WB_Rss},
3248 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString},
3249 {CC"lockAndStuckInSafepoint", CC"()V", (void*)&WB_TakeLockAndHangInSafepoint},
3250 {CC"wordSize", CC"()J", (void*)&WB_WordSize},
3251 {CC"rootChunkWordSize", CC"()J", (void*)&WB_RootChunkWordSize},
3252 {CC"isStatic", CC"()Z", (void*)&WB_IsStaticallyLinked},
3253 {CC"controlledCrash",CC"(I)V", (void*)&WB_ControlledCrash},
3254 };
3255
3256 #undef CC
3257
3258 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
3259 {
3260 if (WhiteBoxAPI) {
3261 // Make sure that wbclass is loaded by the null classloader
3262 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(wbclass));
3263 Handle loader(THREAD, ik->class_loader());
3264 if (loader.is_null()) {
3265 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
3266 WhiteBox::set_used();
3267 }
3268 }
3269 }
3270 JVM_END