1 /*
2 * Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds.h"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.hpp"
31 #include "cds/metaspaceShared.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/protectionDomainCache.hpp"
38 #include "classfile/stringTable.hpp"
39 #include "classfile/symbolTable.hpp"
40 #include "classfile/systemDictionary.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/codeCache.hpp"
43 #include "compiler/compilationPolicy.hpp"
44 #include "compiler/directivesParser.hpp"
45 #include "compiler/methodMatcher.hpp"
46 #include "gc/shared/concurrentGCBreakpoints.hpp"
47 #include "gc/shared/gcConfig.hpp"
48 #include "gc/shared/gcLocker.inline.hpp"
49 #include "gc/shared/genArguments.hpp"
50 #include "gc/shared/genCollectedHeap.hpp"
51 #include "jvmtifiles/jvmtiEnv.hpp"
52 #include "logging/log.hpp"
53 #include "memory/iterator.hpp"
54 #include "memory/metadataFactory.hpp"
55 #include "memory/metaspace/testHelpers.hpp"
56 #include "memory/metaspaceUtils.hpp"
57 #include "memory/oopFactory.hpp"
58 #include "memory/resourceArea.hpp"
59 #include "memory/universe.hpp"
60 #include "oops/array.hpp"
61 #include "oops/compressedOops.hpp"
62 #include "oops/constantPool.inline.hpp"
63 #include "oops/klass.inline.hpp"
64 #include "oops/method.inline.hpp"
65 #include "oops/objArrayKlass.hpp"
66 #include "oops/objArrayOop.inline.hpp"
67 #include "oops/oop.inline.hpp"
68 #include "oops/typeArrayOop.inline.hpp"
69 #include "prims/jvmtiEnvBase.hpp"
70 #include "prims/resolvedMethodTable.hpp"
71 #include "prims/wbtestmethods/parserTests.hpp"
72 #include "prims/whitebox.inline.hpp"
73 #include "runtime/arguments.hpp"
74 #include "runtime/atomic.hpp"
75 #include "runtime/deoptimization.hpp"
76 #include "runtime/fieldDescriptor.inline.hpp"
77 #include "runtime/flags/jvmFlag.hpp"
78 #include "runtime/flags/jvmFlagAccess.hpp"
79 #include "runtime/frame.inline.hpp"
80 #include "runtime/handles.inline.hpp"
81 #include "runtime/handshake.hpp"
82 #include "runtime/interfaceSupport.inline.hpp"
83 #include "runtime/javaCalls.hpp"
84 #include "runtime/javaThread.inline.hpp"
85 #include "runtime/jniHandles.inline.hpp"
86 #include "runtime/os.hpp"
87 #include "runtime/stackFrameStream.inline.hpp"
88 #include "runtime/synchronizer.hpp"
89 #include "runtime/threadSMR.hpp"
90 #include "runtime/vframe.hpp"
91 #include "runtime/vm_version.hpp"
92 #include "services/mallocSiteTable.hpp"
93 #include "services/memoryService.hpp"
94 #include "services/memTracker.hpp"
95 #include "utilities/align.hpp"
96 #include "utilities/checkedCast.hpp"
97 #include "utilities/debug.hpp"
98 #include "utilities/elfFile.hpp"
99 #include "utilities/exceptions.hpp"
100 #include "utilities/macros.hpp"
101 #include "utilities/nativeCallStack.hpp"
102 #include "utilities/ostream.hpp"
103 #if INCLUDE_G1GC
104 #include "gc/g1/g1Arguments.hpp"
105 #include "gc/g1/g1CollectedHeap.inline.hpp"
106 #include "gc/g1/g1ConcurrentMark.hpp"
107 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
108 #include "gc/g1/heapRegionManager.hpp"
109 #include "gc/g1/heapRegionRemSet.inline.hpp"
110 #endif // INCLUDE_G1GC
111 #if INCLUDE_PARALLELGC
112 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
113 #endif // INCLUDE_PARALLELGC
114 #if INCLUDE_ZGC
115 #include "gc/z/zAddress.inline.hpp"
116 #endif // INCLUDE_ZGC
117 #if INCLUDE_JVMCI
118 #include "jvmci/jvmciEnv.hpp"
119 #include "jvmci/jvmciRuntime.hpp"
120 #endif
121 #ifdef LINUX
122 #include "os_linux.hpp"
123 #include "osContainer_linux.hpp"
124 #include "cgroupSubsystem_linux.hpp"
125 #endif
126
127 #define CHECK_JNI_EXCEPTION_(env, value) \
128 do { \
129 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
130 THREAD->clear_pending_jni_exception_check(); \
131 if (HAS_PENDING_EXCEPTION) { \
132 return(value); \
133 } \
134 } while (0)
135
136 #define CHECK_JNI_EXCEPTION(env) \
137 do { \
138 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
139 THREAD->clear_pending_jni_exception_check(); \
140 if (HAS_PENDING_EXCEPTION) { \
141 return; \
142 } \
143 } while (0)
144
145 bool WhiteBox::_used = false;
146 volatile bool WhiteBox::compilation_locked = false;
147
148 class VM_WhiteBoxOperation : public VM_Operation {
149 public:
150 VM_WhiteBoxOperation() { }
151 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
152 bool allow_nested_vm_operations() const { return true; }
153 };
154
155
156 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
157 return (jlong)(void*)JNIHandles::resolve(obj);
158 WB_END
159
160 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
161 return heapOopSize;
162 WB_END
163
164 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
165 return (jint)os::vm_page_size();
166 WB_END
167
168 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
169 return os::vm_allocation_granularity();
170 WB_END
171
172 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
173 return os::large_page_size();
174 WB_END
175
176 class WBIsKlassAliveClosure : public LockedClassesDo {
177 Symbol* _name;
178 int _count;
179 public:
180 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
181
182 void do_klass(Klass* k) {
183 Symbol* ksym = k->name();
184 if (ksym->fast_compare(_name) == 0) {
185 _count++;
186 } else if (k->is_instance_klass()) {
187 // Need special handling for hidden classes because the JVM
188 // appends "+<hex-address>" to hidden class names.
189 InstanceKlass *ik = InstanceKlass::cast(k);
190 if (ik->is_hidden()) {
191 ResourceMark rm;
192 char* k_name = ksym->as_C_string();
193 // Find the first '+' char and truncate the string at that point.
194 // NOTE: This will not work correctly if the original hidden class
195 // name contains a '+'.
196 char* plus_char = strchr(k_name, '+');
197 if (plus_char != nullptr) {
198 *plus_char = 0;
199 char* c_name = _name->as_C_string();
200 if (strcmp(c_name, k_name) == 0) {
201 _count++;
202 }
203 }
204 }
205 }
206 }
207
208 int count() const {
209 return _count;
210 }
211 };
212
213 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
214 oop h_name = JNIHandles::resolve(name);
215 if (h_name == nullptr) {
216 return 0;
217 }
218 Symbol* sym = java_lang_String::as_symbol(h_name);
219 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
220
221 WBIsKlassAliveClosure closure(sym);
222 ClassLoaderDataGraph::classes_do(&closure);
223
224 // Return the count of alive classes with this name.
225 return closure.count();
226 WB_END
227
228 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
229 oop h_name = JNIHandles::resolve(name);
230 if (h_name == nullptr) {
231 return 0;
232 }
233 Symbol* sym = java_lang_String::as_symbol(h_name);
234 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
235 return (jint)sym->refcount();
236 WB_END
237
238
239 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
240 #if INCLUDE_JVMTI
241 ResourceMark rm;
242 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
243 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
244 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
245 assert(err == JVMTI_ERROR_NONE, "must not fail");
246 #endif
247 }
248 WB_END
249
250 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
251 #if INCLUDE_JVMTI
252 ResourceMark rm;
253 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
254 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
255 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
256 assert(err == JVMTI_ERROR_NONE, "must not fail");
257 #endif
258 }
259 WB_END
260
261
262 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
263 return (jlong)Arguments::max_heap_for_compressed_oops();
264 }
265 WB_END
266
267 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
268 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
269 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
270 MinHeapSize,
271 InitialHeapSize,
272 MaxHeapSize,
273 SpaceAlignment,
274 HeapAlignment);
275 }
276 WB_END
277
278 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
279 size_t granularity = os::vm_allocation_granularity();
280 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
281 VirtualSpace vs;
282 vs.initialize(rhs, 50 * granularity);
283
284 // Check if constraints are complied
285 if (!( UseCompressedOops && rhs.base() != nullptr &&
286 CompressedOops::base() != nullptr &&
287 CompressedOops::use_implicit_null_checks() )) {
288 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
289 "\tUseCompressedOops is %d\n"
290 "\trhs.base() is " PTR_FORMAT "\n"
291 "\tCompressedOops::base() is " PTR_FORMAT "\n"
292 "\tCompressedOops::use_implicit_null_checks() is %d",
293 UseCompressedOops,
294 p2i(rhs.base()),
295 p2i(CompressedOops::base()),
296 CompressedOops::use_implicit_null_checks());
297 return;
298 }
299 tty->print_cr("Reading from no access area... ");
300 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
301 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
302 WB_END
303
304 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
305 size_t magnitude, size_t iterations) {
306 size_t granularity = os::vm_allocation_granularity();
307 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
308 VirtualSpace vs;
309 if (!vs.initialize(rhs, 0)) {
310 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
311 return 3;
312 }
313
314 int seed = os::random();
315 tty->print_cr("Random seed is %d", seed);
316
317 for (size_t i = 0; i < iterations; i++) {
318
319 // Whether we will shrink or grow
320 bool shrink = os::random() % 2L == 0;
321
322 // Get random delta to resize virtual space
323 size_t delta = (size_t)os::random() % magnitude;
324
325 // If we are about to shrink virtual space below zero, then expand instead
326 if (shrink && vs.committed_size() < delta) {
327 shrink = false;
328 }
329
330 // Resizing by delta
331 if (shrink) {
332 vs.shrink_by(delta);
333 } else {
334 // If expanding fails expand_by will silently return false
335 vs.expand_by(delta, true);
336 }
337 }
338 return 0;
339 }
340
341 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
342 jlong reserved_space_size, jlong magnitude, jlong iterations))
343 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
344 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
345 iterations);
346 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
347 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
348 return 1;
349 }
350
351 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
352 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
353 if (sizeof(size_t) < sizeof(jlong)) {
354 jlong size_t_max_value = (jlong)SIZE_MAX;
355 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
356 || iterations > size_t_max_value) {
357 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
358 return 2;
359 }
360 }
361
362 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
363 (size_t) magnitude, (size_t) iterations);
364 WB_END
365
366 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
367 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
368 WB_END
369
370 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
371 #if INCLUDE_JVMCI
372 return JVMCI::shared_library_exists();
373 #endif
374 return false;
375 WB_END
376
377 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
378 #if INCLUDE_JVMCI
379 if (EnableJVMCI) {
380 // Enter the JVMCI env that will be used by the CompileBroker.
381 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
382 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
383 }
384 #endif
385 return false;
386 WB_END
387
388 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
389 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
390 WB_END
391
392 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
393 return GCConfig::is_gc_selected_ergonomically();
394 WB_END
395
396 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
397 oop p = JNIHandles::resolve(obj);
398 #if INCLUDE_G1GC
399 if (UseG1GC) {
400 G1CollectedHeap* g1h = G1CollectedHeap::heap();
401 const HeapRegion* hr = g1h->heap_region_containing(p);
402 return !(hr->is_young());
403 }
404 #endif
405 #if INCLUDE_PARALLELGC
406 if (UseParallelGC) {
407 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
408 return !psh->is_in_young(p);
409 }
410 #endif
411 #if INCLUDE_ZGC
412 if (UseZGC) {
413 if (ZGenerational) {
414 return ZHeap::heap()->is_old(to_zaddress(p));
415 } else {
416 return Universe::heap()->is_in(p);
417 }
418 }
419 #endif
420 #if INCLUDE_SHENANDOAHGC
421 if (UseShenandoahGC) {
422 return Universe::heap()->is_in(p);
423 }
424 #endif
425 GenCollectedHeap* gch = GenCollectedHeap::heap();
426 return !gch->is_in_young(p);
427 WB_END
428
429 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
430 oop p = JNIHandles::resolve(obj);
431 return p->size() * HeapWordSize;
432 WB_END
433
434 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
435 return (jlong)SpaceAlignment;
436 WB_END
437
438 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
439 return (jlong)HeapAlignment;
440 WB_END
441
442 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
443 return Universe::heap()->supports_concurrent_gc_breakpoints();
444 WB_END
445
446 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
447 ConcurrentGCBreakpoints::acquire_control();
448 WB_END
449
450 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
451 ConcurrentGCBreakpoints::release_control();
452 WB_END
453
454 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
455 ConcurrentGCBreakpoints::run_to_idle();
456 WB_END
457
458 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
459 Handle h_name(THREAD, JNIHandles::resolve(at));
460 ResourceMark rm;
461 const char* c_name = java_lang_String::as_utf8_string(h_name());
462 return ConcurrentGCBreakpoints::run_to(c_name);
463 WB_END
464
465 #if INCLUDE_G1GC
466
467 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
468 if (UseG1GC) {
469 G1CollectedHeap* g1h = G1CollectedHeap::heap();
470 oop result = JNIHandles::resolve(obj);
471 const HeapRegion* hr = g1h->heap_region_containing(result);
472 return hr->is_humongous();
473 }
474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
475 WB_END
476
477 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
478 if (UseG1GC) {
479 G1CollectedHeap* g1h = G1CollectedHeap::heap();
480 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
481 return hr->is_humongous();
482 }
483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
484 WB_END
485
486 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
487 if (UseG1GC) {
488 G1CollectedHeap* g1h = G1CollectedHeap::heap();
489 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
490 return hr->is_free();
491 }
492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
493 WB_END
494
495 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
496 if (UseG1GC) {
497 G1CollectedHeap* g1h = G1CollectedHeap::heap();
498 size_t nr = g1h->max_regions();
499 return (jlong)nr;
500 }
501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
502 WB_END
503
504 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
505 if (UseG1GC) {
506 G1CollectedHeap* g1h = G1CollectedHeap::heap();
507 size_t nr = g1h->num_free_regions();
508 return (jlong)nr;
509 }
510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
511 WB_END
512
513 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
514 if (UseG1GC) {
515 G1CollectedHeap* g1h = G1CollectedHeap::heap();
516 return g1h->concurrent_mark()->cm_thread()->in_progress();
517 }
518 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
519 WB_END
520
521 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
522 if (UseG1GC) {
523 G1CollectedHeap* g1h = G1CollectedHeap::heap();
524 G1ConcurrentMark* cm = g1h->concurrent_mark();
525 return cm->completed_mark_cycles();
526 }
527 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
528 WB_END
529
530 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
531 if (UseG1GC) {
532 return (jint)HeapRegion::GrainBytes;
533 }
534 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
535 WB_END
536
537 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
538 if (UseG1GC) {
539 return G1CollectedHeap::heap()->has_uncommittable_regions();
540 }
541 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
542 WB_END
543
544 #endif // INCLUDE_G1GC
545
546 #if INCLUDE_PARALLELGC
547
548 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
549 if (UseParallelGC) {
550 return GenAlignment;
551 }
552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
553 WB_END
554
555 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
556 if (UseParallelGC) {
557 return GenAlignment;
558 }
559 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
560 WB_END
561
562 #endif // INCLUDE_PARALLELGC
563
564 #if INCLUDE_G1GC
565
566 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
567 if (UseG1GC) {
568 ResourceMark rm(THREAD);
569 G1CollectedHeap* g1h = G1CollectedHeap::heap();
570 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
571 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
572 return JNIHandles::make_local(THREAD, h());
573 }
574 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
575 WB_END
576
577 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
578 if (UseG1GC) {
579 G1NUMA* numa = G1NUMA::numa();
580 return (jint)numa->num_active_nodes();
581 }
582 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
583 WB_END
584
585 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
586 if (UseG1GC) {
587 G1NUMA* numa = G1NUMA::numa();
588 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
589 const uint* node_ids = numa->node_ids();
590
591 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
592 for (int i = 0; i < num_node_ids; i++) {
593 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
594 }
595 return (jintArray) JNIHandles::make_local(THREAD, result);
596 }
597 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
598 WB_END
599
600 class OldRegionsLivenessClosure: public HeapRegionClosure {
601
602 private:
603 const int _liveness;
604 size_t _total_count;
605 size_t _total_memory;
606 size_t _total_memory_to_free;
607
608 public:
609 OldRegionsLivenessClosure(int liveness) :
610 _liveness(liveness),
611 _total_count(0),
612 _total_memory(0),
613 _total_memory_to_free(0) { }
614
615 size_t total_count() { return _total_count; }
616 size_t total_memory() { return _total_memory; }
617 size_t total_memory_to_free() { return _total_memory_to_free; }
618
619 bool do_heap_region(HeapRegion* r) {
620 if (r->is_old()) {
621 size_t live = r->live_bytes();
622 size_t size = r->used();
623 size_t reg_size = HeapRegion::GrainBytes;
624 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
625 _total_memory += size;
626 ++_total_count;
627 if (size == reg_size) {
628 // We don't include non-full regions since they are unlikely included in mixed gc
629 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
630 _total_memory_to_free += size - live;
631 }
632 }
633 }
634 return false;
635 }
636 };
637
638
639 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
640 if (!UseG1GC) {
641 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
642 }
643 if (liveness < 0) {
644 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
645 }
646
647 G1CollectedHeap* g1h = G1CollectedHeap::heap();
648 OldRegionsLivenessClosure rli(liveness);
649 g1h->heap_region_iterate(&rli);
650
651 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
652 result->long_at_put(0, rli.total_count());
653 result->long_at_put(1, rli.total_memory());
654 result->long_at_put(2, rli.total_memory_to_free());
655 return (jlongArray) JNIHandles::make_local(THREAD, result);
656 WB_END
657
658 #endif // INCLUDE_G1GC
659
660 // Alloc memory using the test memory type so that we can use that to see if
661 // NMT picks it up correctly
662 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
663 jlong addr = 0;
664 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
665 return addr;
666 WB_END
667
668 // Alloc memory with pseudo call stack. The test can create pseudo malloc
669 // allocation site to stress the malloc tracking.
670 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
671 address pc = (address)(size_t)pseudo_stack;
672 NativeCallStack stack(&pc, 1);
673 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
674 WB_END
675
676 // Alloc memory with pseudo call stack and specific memory type.
677 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
678 address pc = (address)(size_t)pseudo_stack;
679 NativeCallStack stack(&pc, 1);
680 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
681 WB_END
682
683 // Free the memory allocated by NMTAllocTest
684 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
685 os::free((void*)(uintptr_t)mem);
686 WB_END
687
688 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
689 jlong addr = 0;
690
691 addr = (jlong)(uintptr_t)os::reserve_memory(size);
692 MemTracker::record_virtual_memory_type((address)addr, mtTest);
693
694 return addr;
695 WB_END
696
697 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
698 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
699 MemTracker::record_virtual_memory_type((address)addr, mtTest);
700
701 return addr;
702 WB_END
703
704 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
705 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
706 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
707 WB_END
708
709 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
710 os::uncommit_memory((char *)(uintptr_t)addr, size);
711 WB_END
712
713 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
714 os::release_memory((char *)(uintptr_t)addr, size);
715 WB_END
716
717 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
718 int hash_size = MallocSiteTable::hash_buckets();
719 assert(hash_size > 0, "NMT hash_size should be > 0");
720 return (jint)hash_size;
721 WB_END
722
723 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
724 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
725 return (jlong)arena;
726 WB_END
727
728 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
729 Arena* a = (Arena*)arena;
730 delete a;
731 WB_END
732
733 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
734 Arena* a = (Arena*)arena;
735 a->Amalloc(size_t(size));
736 WB_END
737
738 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
739 assert(method != nullptr, "method should not be null");
740 ThreadToNativeFromVM ttn(thread);
741 return env->FromReflectedMethod(method);
742 }
743
744 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
745 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
746 private:
747 int _result;
748 const bool _make_not_entrant;
749 public:
750 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
751 _result(0), _make_not_entrant(make_not_entrant) { }
752 int result() const { return _result; }
753
754 void doit() {
755 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
756 if (t->has_last_Java_frame()) {
757 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
758 frame* f = fst.current();
759 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
760 Deoptimization::deoptimize(t, *f);
761 if (_make_not_entrant) {
762 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
763 assert(cm != nullptr, "sanity check");
764 cm->make_not_entrant();
765 }
766 ++_result;
767 }
768 }
769 }
770 }
771 }
772 };
773
774 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
775 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
776 VMThread::execute(&op);
777 return op.result();
778 WB_END
779
780 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
781 bool result = false;
782 if (thread->has_last_Java_frame()) {
783 RegisterMap reg_map(thread,
784 RegisterMap::UpdateMap::include,
785 RegisterMap::ProcessFrames::include,
786 RegisterMap::WalkContinuation::skip);
787 javaVFrame *jvf = thread->last_java_vframe(®_map);
788 for (jint d = 0; d < depth && jvf != nullptr; d++) {
789 jvf = jvf->java_sender();
790 }
791 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
792 }
793 return result;
794 WB_END
795
796 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
797 DeoptimizationScope deopt_scope;
798 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
799 deopt_scope.deoptimize_marked();
800 WB_END
801
802 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
803 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
804 int result = 0;
805 CHECK_JNI_EXCEPTION_(env, result);
806
807 DeoptimizationScope deopt_scope;
808 {
809 MutexLocker mu(Compile_lock);
810 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
811 if (is_osr) {
812 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
813 } else {
814 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
815 if (mh->code() != nullptr) {
816 deopt_scope.mark(mh->code());
817 ++result;
818 }
819 }
820 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
821 }
822
823 deopt_scope.deoptimize_marked();
824
825 return result;
826 WB_END
827
828 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
829 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
830 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
831 MutexLocker mu(Compile_lock);
832 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
833 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
834 if (code == nullptr) {
835 return JNI_FALSE;
836 }
837 return !code->is_marked_for_deoptimization();
838 WB_END
839
840 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
841 if (comp == nullptr) {
842 return true;
843 }
844 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
845 bool exclude = directive->ExcludeOption;
846 DirectivesStack::release(directive);
847 return exclude;
848 }
849
850 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
851 if (is_osr) {
852 return CompilationPolicy::can_be_osr_compiled(mh, level);
853 } else {
854 return CompilationPolicy::can_be_compiled(mh, level);
855 }
856 }
857
858 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
859 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
860 return false;
861 }
862 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
863 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
864 MutexLocker mu(Compile_lock);
865 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
866
867 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
868 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
869 // to exclude a compilation of 'method'.
870 if (comp_level == CompLevel_any) {
871 // Both compilers could have ExcludeOption set. Check all combinations.
872 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
873 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
874 if (excluded_c1 && excluded_c2) {
875 // Compilation of 'method' excluded by both compilers.
876 return false;
877 }
878
879 if (excluded_c1) {
880 // C1 only has ExcludeOption set: Check if compilable with C2.
881 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
882 } else if (excluded_c2) {
883 // C2 only has ExcludeOption set: Check if compilable with C1.
884 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
885 }
886 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
887 // Compilation of 'method' excluded by compiler used for 'comp_level'.
888 return false;
889 }
890
891 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
892 WB_END
893
894 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
895 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
896 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
897 MutexLocker mu(Compile_lock);
898 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
899 return mh->queued_for_compilation();
900 WB_END
901
902 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
903 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
904 return false; // Intrinsic is not available on a non-existent compilation level.
905 }
906 jmethodID method_id, compilation_context_id;
907 method_id = reflected_method_to_jmid(thread, env, method);
908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
910
911 DirectiveSet* directive;
912 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
913 assert(comp != nullptr, "compiler not available");
914 if (compilation_context != nullptr) {
915 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
916 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
917 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
918 directive = DirectivesStack::getMatchingDirective(cch, comp);
919 } else {
920 // Calling with null matches default directive
921 directive = DirectivesStack::getDefaultDirective(comp);
922 }
923 bool result = comp->is_intrinsic_available(mh, directive);
924 DirectivesStack::release(directive);
925 return result;
926 WB_END
927
928 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
929 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
932 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
933 return (code != nullptr ? code->comp_level() : CompLevel_none);
934 WB_END
935
936 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
937 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
938 CHECK_JNI_EXCEPTION(env);
939 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
940 if (is_osr) {
941 mh->set_not_osr_compilable("WhiteBox", comp_level);
942 } else {
943 mh->set_not_compilable("WhiteBox", comp_level);
944 }
945 WB_END
946
947 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
948 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
949 CHECK_JNI_EXCEPTION_(env, 0);
950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
951 uint cnt = 0;
952 MethodData* mdo = mh->method_data();
953 if (mdo != nullptr) {
954 cnt = mdo->decompile_count();
955 }
956 return cnt;
957 WB_END
958
959 // Get the trap count of a method for a specific reason. If the trap count for
960 // that reason did overflow, this includes the overflow trap count of the method.
961 // If 'reason' is null, the sum of the traps for all reasons will be returned.
962 // This number includes the overflow trap count if the trap count for any reason
963 // did overflow.
964 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
965 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
966 CHECK_JNI_EXCEPTION_(env, 0);
967 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
968 uint cnt = 0;
969 MethodData* mdo = mh->method_data();
970 if (mdo != nullptr) {
971 ResourceMark rm(THREAD);
972 char* reason_str = (reason_obj == nullptr) ?
973 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
974 bool overflow = false;
975 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
976 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
977 cnt = mdo->trap_count(reason);
978 // Count in the overflow trap count on overflow
979 if (cnt == (uint)-1) {
980 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
981 }
982 break;
983 } else if (reason_str == nullptr) {
984 uint c = mdo->trap_count(reason);
985 if (c == (uint)-1) {
986 c = mdo->trap_count_limit();
987 if (!overflow) {
988 // Count overflow trap count just once
989 overflow = true;
990 c += mdo->overflow_trap_count();
991 }
992 }
993 cnt += c;
994 }
995 }
996 }
997 return cnt;
998 WB_END
999
1000 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1001 if (reason_obj == nullptr && action_obj == nullptr) {
1002 return Deoptimization::total_deoptimization_count();
1003 }
1004 ResourceMark rm(THREAD);
1005 const char *reason_str = (reason_obj == nullptr) ?
1006 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1007 const char *action_str = (action_obj == nullptr) ?
1008 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1009
1010 return Deoptimization::deoptimization_count(reason_str, action_str);
1011 WB_END
1012
1013 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1014 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1015 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1016 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1017 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1018 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1019 WB_END
1020
1021 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1022 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1023 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1024 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1025 bool result = mh->dont_inline();
1026 mh->set_dont_inline(value == JNI_TRUE);
1027 return result;
1028 WB_END
1029
1030 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1031 if (comp_level == CompLevel_any) {
1032 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1033 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1034 } else {
1035 return CompileBroker::queue_size(comp_level);
1036 }
1037 WB_END
1038
1039 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1040 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1041 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1042 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1043 bool result = mh->force_inline();
1044 mh->set_force_inline(value == JNI_TRUE);
1045 return result;
1046 WB_END
1047
1048 #ifdef LINUX
1049 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1050 const char* proc_self_cgroup,
1051 const char* proc_self_mountinfo,
1052 u1* cg_flags) {
1053 CgroupInfo cg_infos[CG_INFO_LENGTH];
1054 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1055 proc_self_cgroup,
1056 proc_self_mountinfo, cg_flags);
1057 }
1058 #endif
1059
1060 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1061 // Screen for unavailable/bad comp level or null method
1062 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1063 if (method == nullptr) {
1064 tty->print_cr("WB error: request to compile null method");
1065 return false;
1066 }
1067 if (comp_level > CompilationPolicy::highest_compile_level()) {
1068 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1069 return false;
1070 }
1071 if (comp == nullptr) {
1072 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1073 return false;
1074 }
1075
1076 // Check if compilation is blocking
1077 methodHandle mh(THREAD, method);
1078 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1079 bool is_blocking = !directive->BackgroundCompilationOption;
1080 DirectivesStack::release(directive);
1081
1082 // Compile method and check result
1083 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1084 MutexLocker mu(THREAD, Compile_lock);
1085 bool is_queued = mh->queued_for_compilation();
1086 if ((!is_blocking && is_queued) || nm != nullptr) {
1087 return true;
1088 }
1089 // Check code again because compilation may be finished before Compile_lock is acquired.
1090 if (bci == InvocationEntryBci) {
1091 CompiledMethod* code = mh->code();
1092 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1093 return true;
1094 }
1095 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1096 return true;
1097 }
1098 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1099 mh->print_short_name(tty);
1100 tty->cr();
1101 if (is_blocking && is_queued) {
1102 tty->print_cr("WB error: blocking compilation is still in queue!");
1103 }
1104 return false;
1105 }
1106
1107 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1108 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1109 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1110 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1111 WB_END
1112
1113 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1114 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1115 Method* clinit = ik->class_initializer();
1116 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1117 return false;
1118 }
1119 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1120 WB_END
1121
1122 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1123 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1124 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1125
1126 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1127 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1128 bool result = directive->PrintAssemblyOption;
1129 DirectivesStack::release(directive);
1130
1131 return result;
1132 WB_END
1133
1134 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1135 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1136 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1137
1138 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1139
1140 ResourceMark rm(THREAD);
1141 const char* error_msg = nullptr;
1142 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1143 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1144
1145 if (m == nullptr) {
1146 assert(error_msg != nullptr, "Always have an error message");
1147 tty->print_cr("Got error: %s", error_msg);
1148 return -1; // Pattern failed
1149 }
1150
1151 // Pattern works - now check if it matches
1152 int result;
1153 if (m->match(mh, InlineMatcher::force_inline)) {
1154 result = 2; // Force inline match
1155 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1156 result = 1; // Dont inline match
1157 } else {
1158 result = 0; // No match
1159 }
1160 delete m;
1161 return result;
1162 WB_END
1163
1164 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1165 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1166 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1167
1168 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1169
1170 ResourceMark rm;
1171 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1172
1173 const char* error_msg = nullptr;
1174
1175 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1176 if (m == nullptr) {
1177 assert(error_msg != nullptr, "Must have error_msg");
1178 tty->print_cr("Got error: %s", error_msg);
1179 return -1;
1180 }
1181
1182 // Pattern works - now check if it matches
1183 int result = m->matches(mh);
1184 delete m;
1185 assert(result == 0 || result == 1, "Result out of range");
1186 return result;
1187 WB_END
1188
1189 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1190 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1191 CHECK_JNI_EXCEPTION(env);
1192 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1193
1194 MethodData* mdo = mh->method_data();
1195 if (mdo == nullptr) {
1196 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1197 mdo = mh->method_data();
1198 }
1199 mdo->init();
1200 InvocationCounter* icnt = mdo->invocation_counter();
1201 InvocationCounter* bcnt = mdo->backedge_counter();
1202 // set i-counter according to CompilationPolicy::is_method_profiled
1203 icnt->set(Tier4MinInvocationThreshold);
1204 bcnt->set(Tier4CompileThreshold);
1205 WB_END
1206
1207 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1208 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1209 CHECK_JNI_EXCEPTION(env);
1210 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1211 MutexLocker mu(THREAD, Compile_lock);
1212 MethodData* mdo = mh->method_data();
1213 MethodCounters* mcs = mh->method_counters();
1214
1215 if (mdo != nullptr) {
1216 mdo->init();
1217 ResourceMark rm(THREAD);
1218 int arg_count = mdo->method()->size_of_parameters();
1219 for (int i = 0; i < arg_count; i++) {
1220 mdo->set_arg_modified(i, 0);
1221 }
1222 MutexLocker mu(THREAD, mdo->extra_data_lock());
1223 mdo->clean_method_data(/*always_clean*/true);
1224 }
1225
1226 mh->clear_is_not_c1_compilable();
1227 mh->clear_is_not_c2_compilable();
1228 mh->clear_is_not_c2_osr_compilable();
1229 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1230 if (mcs != nullptr) {
1231 mcs->clear_counters();
1232 }
1233 WB_END
1234
1235 template <typename T, int type_enum>
1236 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1237 if (name == nullptr) {
1238 return false;
1239 }
1240 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1241 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1242 CHECK_JNI_EXCEPTION_(env, false);
1243 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1244 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1245 env->ReleaseStringUTFChars(name, flag_name);
1246 return (result == JVMFlag::SUCCESS);
1247 }
1248
1249 template <typename T, int type_enum>
1250 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1251 if (name == nullptr) {
1252 return false;
1253 }
1254 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1255 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1256 CHECK_JNI_EXCEPTION_(env, false);
1257 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1258 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1259 env->ReleaseStringUTFChars(name, flag_name);
1260 return (result == JVMFlag::SUCCESS);
1261 }
1262
1263 template <typename T>
1264 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1265 ResourceMark rm(thread);
1266 jclass clazz = env->FindClass(name->as_C_string());
1267 CHECK_JNI_EXCEPTION_(env, nullptr);
1268 jmethodID methodID = env->GetStaticMethodID(clazz,
1269 vmSymbols::valueOf_name()->as_C_string(),
1270 sig->as_C_string());
1271 CHECK_JNI_EXCEPTION_(env, nullptr);
1272 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1273 CHECK_JNI_EXCEPTION_(env, nullptr);
1274 return result;
1275 }
1276
1277 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1278 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1279 }
1280 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1281 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1282 }
1283 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1284 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1285 }
1286 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1287 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1288 }*/
1289 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1290 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1291 }
1292
1293 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1294 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1295 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1296 CHECK_JNI_EXCEPTION_(env, nullptr);
1297 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1298 env->ReleaseStringUTFChars(name, flag_name);
1299 return result;
1300 }
1301
1302 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1303 const JVMFlag* flag = getVMFlag(thread, env, name);
1304 return (flag != nullptr) && flag->is_constant_in_binary();
1305 WB_END
1306
1307 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1308 const JVMFlag* flag = getVMFlag(thread, env, name);
1309 return (flag != nullptr) && flag->is_default();
1310 WB_END
1311
1312 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1313 const JVMFlag* flag = getVMFlag(thread, env, name);
1314 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1315 WB_END
1316
1317 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1318 bool result;
1319 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1320 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1321 return booleanBox(thread, env, result);
1322 }
1323 return nullptr;
1324 WB_END
1325
1326 template <typename T, int type_enum>
1327 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1328 T result;
1329 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1330 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1331 return longBox(thread, env, result);
1332 }
1333 return nullptr;
1334 }
1335
1336 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1337 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1338 WB_END
1339
1340 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1341 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1342 WB_END
1343
1344 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1345 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1346 WB_END
1347
1348 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1349 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1350 WB_END
1351
1352 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1353 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1354 WB_END
1355
1356 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1357 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1358 WB_END
1359
1360 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1361 double result;
1362 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1363 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1364 return doubleBox(thread, env, result);
1365 }
1366 return nullptr;
1367 WB_END
1368
1369 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1370 ccstr ccstrResult;
1371 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1372 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1373 jstring result = env->NewStringUTF(ccstrResult);
1374 CHECK_JNI_EXCEPTION_(env, nullptr);
1375 return result;
1376 }
1377 return nullptr;
1378 WB_END
1379
1380 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1381 bool result = value == JNI_TRUE ? true : false;
1382 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1383 WB_END
1384
1385 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1386 int result = checked_cast<int>(value);
1387 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1388 WB_END
1389
1390 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1391 uint result = checked_cast<uint>(value);
1392 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1393 WB_END
1394
1395 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1396 intx result = value;
1397 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1398 WB_END
1399
1400 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1401 uintx result = value;
1402 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1403 WB_END
1404
1405 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1406 uint64_t result = value;
1407 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1408 WB_END
1409
1410 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1411 size_t result = value;
1412 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1413 WB_END
1414
1415 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1416 double result = value;
1417 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1418 WB_END
1419
1420 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1421 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1422 const char* ccstrValue;
1423 if (value == nullptr) {
1424 ccstrValue = nullptr;
1425 }
1426 else {
1427 ccstrValue = env->GetStringUTFChars(value, nullptr);
1428 CHECK_JNI_EXCEPTION(env);
1429 }
1430 {
1431 ccstr param = ccstrValue;
1432 ThreadInVMfromNative ttvfn(thread); // back to VM
1433 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1434 assert(param == nullptr, "old value is freed automatically and not returned");
1435 }
1436 }
1437 if (value != nullptr) {
1438 env->ReleaseStringUTFChars(value, ccstrValue);
1439 }
1440 WB_END
1441
1442 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1443 WhiteBox::compilation_locked = true;
1444 WB_END
1445
1446 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1447 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1448 WhiteBox::compilation_locked = false;
1449 mo.notify_all();
1450 WB_END
1451
1452 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1453 ResourceMark rm(THREAD);
1454 int len;
1455 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1456 return (StringTable::lookup(name, len) != nullptr);
1457 WB_END
1458
1459 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1460 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1461 Universe::heap()->collect(GCCause::_wb_full_gc);
1462 #if INCLUDE_G1GC || INCLUDE_SERIALGC
1463 if (UseG1GC || UseSerialGC) {
1464 // Needs to be cleared explicitly for G1 and Serial GC.
1465 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1466 }
1467 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC
1468 WB_END
1469
1470 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1471 Universe::heap()->collect(GCCause::_wb_young_gc);
1472 WB_END
1473
1474 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1475 // static+volatile in order to force the read to happen
1476 // (not be eliminated by the compiler)
1477 static char c;
1478 static volatile char* p;
1479
1480 p = os::reserve_memory(os::vm_allocation_granularity());
1481 if (p == nullptr) {
1482 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1483 }
1484
1485 c = *p;
1486 WB_END
1487
1488 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1489 const char* features = VM_Version::features_string();
1490 ThreadToNativeFromVM ttn(thread);
1491 jstring features_string = env->NewStringUTF(features);
1492
1493 CHECK_JNI_EXCEPTION_(env, nullptr);
1494
1495 return features_string;
1496 WB_END
1497
1498 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1499 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1500 return CodeCache::get_code_heap(code)->code_blob_type();
1501 }
1502
1503 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1504 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1505 return CodeCache::get_code_heap(blob_type);
1506 }
1507
1508 struct CodeBlobStub {
1509 CodeBlobStub(const CodeBlob* blob) :
1510 name(os::strdup(blob->name())),
1511 size(blob->size()),
1512 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1513 address((jlong) blob) { }
1514 ~CodeBlobStub() { os::free((void*) name); }
1515 const char* const name;
1516 const jint size;
1517 const jint blob_type;
1518 const jlong address;
1519 };
1520
1521 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1522 ResourceMark rm;
1523 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1524 CHECK_JNI_EXCEPTION_(env, nullptr);
1525 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1526
1527 jstring name = env->NewStringUTF(cb->name);
1528 CHECK_JNI_EXCEPTION_(env, nullptr);
1529 env->SetObjectArrayElement(result, 0, name);
1530
1531 jobject obj = integerBox(thread, env, cb->size);
1532 CHECK_JNI_EXCEPTION_(env, nullptr);
1533 env->SetObjectArrayElement(result, 1, obj);
1534
1535 obj = integerBox(thread, env, cb->blob_type);
1536 CHECK_JNI_EXCEPTION_(env, nullptr);
1537 env->SetObjectArrayElement(result, 2, obj);
1538
1539 obj = longBox(thread, env, cb->address);
1540 CHECK_JNI_EXCEPTION_(env, nullptr);
1541 env->SetObjectArrayElement(result, 3, obj);
1542
1543 return result;
1544 }
1545
1546 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1547 ResourceMark rm(THREAD);
1548 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1549 CHECK_JNI_EXCEPTION_(env, nullptr);
1550 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1551 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1552 jobjectArray result = nullptr;
1553 if (code == nullptr) {
1554 return result;
1555 }
1556 int comp_level = code->comp_level();
1557 int insts_size = code->insts_size();
1558
1559 ThreadToNativeFromVM ttn(thread);
1560 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1561 CHECK_JNI_EXCEPTION_(env, nullptr);
1562 result = env->NewObjectArray(5, clazz, nullptr);
1563 if (result == nullptr) {
1564 return result;
1565 }
1566
1567 CodeBlobStub stub(code);
1568 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1569 CHECK_JNI_EXCEPTION_(env, nullptr);
1570 env->SetObjectArrayElement(result, 0, codeBlob);
1571
1572 jobject level = integerBox(thread, env, comp_level);
1573 CHECK_JNI_EXCEPTION_(env, nullptr);
1574 env->SetObjectArrayElement(result, 1, level);
1575
1576 jbyteArray insts = env->NewByteArray(insts_size);
1577 CHECK_JNI_EXCEPTION_(env, nullptr);
1578 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1579 env->SetObjectArrayElement(result, 2, insts);
1580
1581 jobject id = integerBox(thread, env, code->compile_id());
1582 CHECK_JNI_EXCEPTION_(env, nullptr);
1583 env->SetObjectArrayElement(result, 3, id);
1584
1585 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1586 CHECK_JNI_EXCEPTION_(env, nullptr);
1587 env->SetObjectArrayElement(result, 4, entry_point);
1588
1589 return result;
1590 WB_END
1591
1592 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1593 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1594 BufferBlob* blob;
1595 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1596 if (full_size < size) {
1597 full_size += align_up(size - full_size, oopSize);
1598 }
1599 {
1600 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1601 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1602 if (blob != nullptr) {
1603 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1604 }
1605 }
1606 // Track memory usage statistic after releasing CodeCache_lock
1607 MemoryService::track_code_cache_memory_usage();
1608 return blob;
1609 }
1610
1611 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1612 if (size < 0) {
1613 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1614 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1615 }
1616 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1617 WB_END
1618
1619 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1620 if (addr == 0) {
1621 return;
1622 }
1623 BufferBlob::free((BufferBlob*) addr);
1624 WB_END
1625
1626 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1627 ResourceMark rm;
1628 GrowableArray<CodeBlobStub*> blobs;
1629 {
1630 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1631 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1632 if (heap == nullptr) {
1633 return nullptr;
1634 }
1635 for (CodeBlob* cb = (CodeBlob*) heap->first();
1636 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1637 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1638 new (stub) CodeBlobStub(cb);
1639 blobs.append(stub);
1640 }
1641 }
1642 ThreadToNativeFromVM ttn(thread);
1643 jobjectArray result = nullptr;
1644 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1645 CHECK_JNI_EXCEPTION_(env, nullptr);
1646 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1647 CHECK_JNI_EXCEPTION_(env, nullptr);
1648 if (result == nullptr) {
1649 return result;
1650 }
1651 int i = 0;
1652 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1653 it != blobs.end(); ++it) {
1654 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1655 CHECK_JNI_EXCEPTION_(env, nullptr);
1656 env->SetObjectArrayElement(result, i, obj);
1657 CHECK_JNI_EXCEPTION_(env, nullptr);
1658 ++i;
1659 }
1660 return result;
1661 WB_END
1662
1663 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1664 return CompileBroker::get_compilation_activity_mode();
1665 WB_END
1666
1667 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1668 if (addr == 0) {
1669 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1670 "WB_GetCodeBlob: addr is null");
1671 }
1672 ThreadToNativeFromVM ttn(thread);
1673 CodeBlobStub stub((CodeBlob*) addr);
1674 return codeBlob2objectArray(thread, env, &stub);
1675 WB_END
1676
1677 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1678 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1679 CHECK_JNI_EXCEPTION_(env, 0);
1680 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1681 return (jlong) mh->method_data();
1682 WB_END
1683
1684 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1685 return (jlong) thread->stack_size();
1686 WB_END
1687
1688 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1689 return (jlong) thread->stack_overflow_state()->stack_available(
1690 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1691 WB_END
1692
1693
1694 int WhiteBox::array_bytes_to_length(size_t bytes) {
1695 return Array<u1>::bytes_to_length(bytes);
1696 }
1697
1698 ///////////////
1699 // MetaspaceTestContext and MetaspaceTestArena
1700 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1701 metaspace::MetaspaceTestContext* context =
1702 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1703 return (jlong)p2i(context);
1704 WB_END
1705
1706 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1707 delete (metaspace::MetaspaceTestContext*) context;
1708 WB_END
1709
1710 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1711 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1712 context0->purge_area();
1713 WB_END
1714
1715 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1716 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1717 context0->print_on(tty);
1718 WB_END
1719
1720 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1721 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1722 return context0->committed_words();
1723 WB_END
1724
1725 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1726 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1727 return context0->used_words();
1728 WB_END
1729
1730 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1731 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1732 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1733 return (jlong)p2i(context0->create_arena(type));
1734 WB_END
1735
1736 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1737 delete (metaspace::MetaspaceTestArena*) arena;
1738 WB_END
1739
1740 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1741 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1742 MetaWord* p = arena0->allocate((size_t) word_size);
1743 return (jlong)p2i(p);
1744 WB_END
1745
1746 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1747 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1748 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1749 WB_END
1750
1751 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1752 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1753 WB_END
1754
1755 //////////////
1756
1757 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1758 if (size < 0) {
1759 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1760 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1761 }
1762
1763 oop class_loader_oop = JNIHandles::resolve(class_loader);
1764 ClassLoaderData* cld = class_loader_oop != nullptr
1765 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1766 : ClassLoaderData::the_null_class_loader_data();
1767
1768 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1769
1770 return (jlong)(uintptr_t)metadata;
1771 WB_END
1772
1773 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1774 jstring version, jstring location, jobjectArray packages))
1775 Handle h_module (THREAD, JNIHandles::resolve(module));
1776 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1777 WB_END
1778
1779 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1780 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1781 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1782 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1783 WB_END
1784
1785 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1786 Handle h_module (THREAD, JNIHandles::resolve(module));
1787 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1788 WB_END
1789
1790 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1791 Handle h_module (THREAD, JNIHandles::resolve(module));
1792 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1793 WB_END
1794
1795 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1796 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1797 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1798 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1799 WB_END
1800
1801 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1802 if (inc < 0) {
1803 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1804 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1805 }
1806
1807 jlong max_size_t = (jlong) ((size_t) -1);
1808 if (inc > max_size_t) {
1809 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1810 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1811 }
1812
1813 size_t new_cap_until_GC = 0;
1814 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1815 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1816 if (!success) {
1817 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1818 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1819 "due to contention with another thread");
1820 }
1821 return (jlong) new_cap_until_GC;
1822 WB_END
1823
1824 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1825 return (jlong) MetaspaceGC::capacity_until_GC();
1826 WB_END
1827
1828 // The function is only valid when CDS is available.
1829 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1830 #if INCLUDE_CDS
1831 return (jlong)MetaspaceShared::core_region_alignment();
1832 #else
1833 ShouldNotReachHere();
1834 return 0L;
1835 #endif
1836 WB_END
1837
1838 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1839 oop obj_oop = JNIHandles::resolve(obj);
1840 return (jboolean) obj_oop->mark().has_monitor();
1841 WB_END
1842
1843 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1844 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1845 return ObjectSynchronizer::request_deflate_idle_monitors();
1846 WB_END
1847
1848 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1849 VM_ForceSafepoint force_safepoint_op;
1850 VMThread::execute(&force_safepoint_op);
1851 WB_END
1852
1853 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1854 nullStream dev_null;
1855 ClassLoaderStatsVMOperation force_op(&dev_null);
1856 VMThread::execute(&force_op);
1857 WB_END
1858
1859 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1860 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1861 return (jlong) ik->constants();
1862 WB_END
1863
1864 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1865 return ConstantPool::CPCACHE_INDEX_TAG;
1866 WB_END
1867
1868 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1869 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1870 ConstantPool* cp = ik->constants();
1871 if (cp->cache() == nullptr) {
1872 return -1;
1873 }
1874 return cp->cache()->length();
1875 WB_END
1876
1877 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1878 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1879 ConstantPool* cp = ik->constants();
1880 if (cp->cache() == nullptr) {
1881 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1882 }
1883 jint cpci = index;
1884 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1885 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1886 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1887 }
1888 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1889 return cpi;
1890 WB_END
1891
1892 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1893 return ConstantPool::encode_invokedynamic_index(index);
1894 WB_END
1895
1896 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1897 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1898 ConstantPool* cp = ik->constants();
1899 if (cp->cache() == nullptr) {
1900 return -1;
1901 }
1902 return cp->resolved_field_entries_length();
1903 WB_END
1904
1905 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1906 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1907 ConstantPool* cp = ik->constants();
1908 if (cp->cache() == NULL) {
1909 return -1;
1910 }
1911 return cp->resolved_field_entry_at(index)->constant_pool_index();
1912 WB_END
1913
1914 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1915 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1916 ConstantPool* cp = ik->constants();
1917 if (cp->cache() == nullptr) {
1918 return -1;
1919 }
1920 return cp->resolved_indy_entries_length();
1921 WB_END
1922
1923 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1924 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1925 ConstantPool* cp = ik->constants();
1926 if (cp->cache() == nullptr) {
1927 return -1;
1928 }
1929 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1930 WB_END
1931
1932 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
1933 ThreadToNativeFromVM ttnfv(thread);
1934 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1935 ResourceMark rm;
1936 stringStream st;
1937 {
1938 ThreadInVMfromNative ttvfn(thread); // back to VM
1939 ClassPrinter::print_classes(c, flags, &st);
1940 }
1941 jstring result = env->NewStringUTF(st.freeze());
1942 CHECK_JNI_EXCEPTION_(env, nullptr);
1943 return result;
1944 WB_END
1945
1946 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
1947 ThreadToNativeFromVM ttnfv(thread);
1948 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1949 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
1950 ResourceMark rm;
1951 stringStream st;
1952 {
1953 ThreadInVMfromNative ttvfn(thread); // back to VM
1954 ClassPrinter::print_methods(c, m, flags, &st);
1955 }
1956 jstring result = env->NewStringUTF(st.freeze());
1957 CHECK_JNI_EXCEPTION_(env, nullptr);
1958 return result;
1959 WB_END
1960
1961 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1962 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1963 VMThread::execute(&clear_ics);
1964 WB_END
1965
1966 template <typename T>
1967 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1968 assert(value != nullptr, "sanity");
1969 if (method == nullptr || name == nullptr) {
1970 return false;
1971 }
1972 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1973 CHECK_JNI_EXCEPTION_(env, false);
1974 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1975 // can't be in VM when we call JNI
1976 ThreadToNativeFromVM ttnfv(thread);
1977 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1978 CHECK_JNI_EXCEPTION_(env, false);
1979 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1980 env->ReleaseStringUTFChars(name, flag_name);
1981 if (option == CompileCommand::Unknown) {
1982 return false;
1983 }
1984 if (!CompilerOracle::option_matches_type(option, *value)) {
1985 return false;
1986 }
1987 return CompilerOracle::has_option_value(mh, option, *value);
1988 }
1989
1990 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1991 bool result;
1992 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1993 // can't be in VM when we call JNI
1994 ThreadToNativeFromVM ttnfv(thread);
1995 return booleanBox(thread, env, result);
1996 }
1997 return nullptr;
1998 WB_END
1999
2000 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2001 intx result;
2002 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2003 // can't be in VM when we call JNI
2004 ThreadToNativeFromVM ttnfv(thread);
2005 return longBox(thread, env, result);
2006 }
2007 return nullptr;
2008 WB_END
2009
2010 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2011 uintx result;
2012 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2013 // can't be in VM when we call JNI
2014 ThreadToNativeFromVM ttnfv(thread);
2015 return longBox(thread, env, result);
2016 }
2017 return nullptr;
2018 WB_END
2019
2020 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2021 double result;
2022 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2023 // can't be in VM when we call JNI
2024 ThreadToNativeFromVM ttnfv(thread);
2025 return doubleBox(thread, env, result);
2026 }
2027 return nullptr;
2028 WB_END
2029
2030 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2031 ccstr ccstrResult;
2032 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2033 // can't be in VM when we call JNI
2034 ThreadToNativeFromVM ttnfv(thread);
2035 jstring result = env->NewStringUTF(ccstrResult);
2036 CHECK_JNI_EXCEPTION_(env, nullptr);
2037 return result;
2038 }
2039 return nullptr;
2040 WB_END
2041
2042 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2043 const char* p = Arguments::get_default_shared_archive_path();
2044 ThreadToNativeFromVM ttn(thread);
2045 jstring path_string = env->NewStringUTF(p);
2046
2047 CHECK_JNI_EXCEPTION_(env, nullptr);
2048
2049 return path_string;
2050 WB_END
2051
2052 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2053 return UseSharedSpaces;
2054 WB_END
2055
2056 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2057 #if INCLUDE_CDS
2058 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2059 #else
2060 ShouldNotReachHere();
2061 return (jint)-1;
2062 #endif
2063 WB_END
2064
2065 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2066 #if INCLUDE_CDS
2067 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2068 #else
2069 ShouldNotReachHere();
2070 return (jint)-1;
2071 #endif
2072 WB_END
2073
2074 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2075 return FileMapInfo::memory_mapping_failed();
2076 WB_END
2077
2078 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2079 ResourceMark rm(THREAD);
2080 oop str_oop = JNIHandles::resolve(str);
2081 int length;
2082 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2083 return StringTable::lookup_shared(chars, length) == str_oop;
2084 WB_END
2085
2086 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2087 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2088 WB_END
2089
2090 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2091 return ArchiveHeapLoader::is_mapped();
2092 WB_END
2093
2094 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2095 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2096 if (!k->is_instance_klass()) {
2097 return;
2098 }
2099 InstanceKlass *ik = InstanceKlass::cast(k);
2100 ik->link_class(THREAD); // may throw verification error
2101 WB_END
2102
2103 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2104 return ArchiveHeapLoader::is_mapped();
2105 WB_END
2106
2107 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2108 #if INCLUDE_CDS
2109 return true;
2110 #else
2111 return false;
2112 #endif // INCLUDE_CDS
2113 WB_END
2114
2115 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2116 #if COMPILER2_OR_JVMCI
2117 return true;
2118 #else
2119 return false;
2120 #endif
2121 WB_END
2122
2123 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2124 #if INCLUDE_JVMCI
2125 return JVMCIGlobals::gc_supports_jvmci();
2126 #else
2127 return false;
2128 #endif
2129 WB_END
2130
2131 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2132 return HeapShared::can_write();
2133 WB_END
2134
2135
2136 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2137 #if INCLUDE_JFR
2138 return true;
2139 #else
2140 return false;
2141 #endif // INCLUDE_JFR
2142 WB_END
2143
2144 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2145 #if defined(DTRACE_ENABLED)
2146 return true;
2147 #else
2148 return false;
2149 #endif // DTRACE_ENABLED
2150 WB_END
2151
2152 #if INCLUDE_CDS
2153
2154 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2155 ResourceMark rm;
2156 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2157 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2158 return result;
2159 WB_END
2160
2161 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2162 ResourceMark rm;
2163 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2164 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2165 return result;
2166 WB_END
2167
2168 #endif // INCLUDE_CDS
2169
2170 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2171 class ReadMonitorsClosure : public HandshakeClosure {
2172 jboolean _executed;
2173
2174 void do_thread(Thread* th) {
2175 JavaThread* jt = JavaThread::cast(th);
2176 ResourceMark rm;
2177
2178 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2179
2180 if (!jt->has_last_Java_frame()) {
2181 return;
2182 }
2183 RegisterMap rmap(jt,
2184 RegisterMap::UpdateMap::include,
2185 RegisterMap::ProcessFrames::include,
2186 RegisterMap::WalkContinuation::skip);
2187 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2188 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2189 if (monitors != nullptr) {
2190 int len = monitors->length();
2191 // Walk monitors youngest to oldest
2192 for (int i = len - 1; i >= 0; i--) {
2193 MonitorInfo* mon_info = monitors->at(i);
2194 if (mon_info->eliminated()) continue;
2195 oop owner = mon_info->owner();
2196 if (owner != nullptr) {
2197 info->append(mon_info);
2198 }
2199 }
2200 }
2201 }
2202 _executed = true;
2203 }
2204
2205 public:
2206 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2207 jboolean executed() const { return _executed; }
2208 };
2209
2210 ReadMonitorsClosure rmc;
2211 if (thread_handle != nullptr) {
2212 ThreadsListHandle tlh;
2213 JavaThread* target = nullptr;
2214 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2215 if (is_alive) {
2216 Handshake::execute(&rmc, &tlh, target);
2217 }
2218 }
2219 return rmc.executed();
2220 WB_END
2221
2222 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2223 class TraceSelfClosure : public HandshakeClosure {
2224 jint _num_threads_completed;
2225
2226 void do_thread(Thread* th) {
2227 JavaThread* jt = JavaThread::cast(th);
2228 ResourceMark rm;
2229
2230 jt->print_on(tty);
2231 jt->print_stack_on(tty);
2232 tty->cr();
2233 Atomic::inc(&_num_threads_completed);
2234 }
2235
2236 public:
2237 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2238
2239 jint num_threads_completed() const { return _num_threads_completed; }
2240 };
2241 TraceSelfClosure tsc(Thread::current());
2242
2243 if (all_threads) {
2244 Handshake::execute(&tsc);
2245 } else if (thread_handle != nullptr) {
2246 ThreadsListHandle tlh;
2247 JavaThread* target = nullptr;
2248 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2249 if (is_alive) {
2250 Handshake::execute(&tsc, &tlh, target);
2251 }
2252 }
2253 return tsc.num_threads_completed();
2254 WB_END
2255
2256 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2257 class TraceSelfClosure : public AsyncHandshakeClosure {
2258 JavaThread* _self;
2259 void do_thread(Thread* th) {
2260 assert(th->is_Java_thread(), "sanity");
2261 // AsynchHandshake handshakes are only executed by target.
2262 assert(_self == th, "Must be");
2263 assert(Thread::current() == th, "Must be");
2264 JavaThread* jt = JavaThread::cast(th);
2265 ResourceMark rm;
2266 jt->print_on(tty);
2267 jt->print_stack_on(tty);
2268 tty->cr();
2269 }
2270
2271 public:
2272 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2273 };
2274 if (thread_handle != nullptr) {
2275 ThreadsListHandle tlh;
2276 JavaThread* target = nullptr;
2277 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2278 if (is_alive) {
2279 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2280 Handshake::execute(tsc, target);
2281 }
2282 }
2283 WB_END
2284
2285 static volatile int _emulated_lock = 0;
2286
2287 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2288 JavaThread* self = JavaThread::current();
2289
2290 {
2291 // Before trying to acquire the lock transition into a safepoint safe state.
2292 // Otherwise if either suspender or suspendee blocks for a safepoint
2293 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2294 // the lock without allowing the safepoint to progress.
2295 ThreadBlockInVM tbivm(self);
2296
2297 // We will deadlock here if we are 'suspender' and 'suspendee'
2298 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2299 // at the right place.
2300 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2301 assert(_emulated_lock == 1, "Must be locked");
2302
2303 // Sleep much longer in suspendee to force situation where
2304 // 'suspender' is waiting above to acquire lock.
2305 os::naked_short_sleep(suspender ? 1 : 10);
2306 }
2307 Atomic::store(&_emulated_lock, 0);
2308 WB_END
2309
2310 // Some convenience methods to deal with objects from java
2311 int WhiteBox::offset_for_field(const char* field_name, oop object,
2312 Symbol* signature_symbol) {
2313 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2314
2315 //Get the class of our object
2316 Klass* arg_klass = object->klass();
2317 //Turn it into an instance-klass
2318 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2319
2320 //Create symbols to look for in the class
2321 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2322
2323 //To be filled in with an offset of the field we're looking for
2324 fieldDescriptor fd;
2325
2326 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2327 if (res == nullptr) {
2328 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2329 name_symbol->as_C_string());
2330 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2331 }
2332
2333 //fetch the field at the offset we've found
2334 int dest_offset = fd.offset();
2335
2336 return dest_offset;
2337 }
2338
2339
2340 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2341 int offset = offset_for_field(field_name, object,
2342 vmSymbols::string_signature());
2343 oop string = object->obj_field(offset);
2344 if (string == nullptr) {
2345 return nullptr;
2346 }
2347 const char* ret = java_lang_String::as_utf8_string(string);
2348 return ret;
2349 }
2350
2351 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2352 int offset =
2353 offset_for_field(field_name, object, vmSymbols::bool_signature());
2354 bool ret = (object->bool_field(offset) == JNI_TRUE);
2355 return ret;
2356 }
2357
2358 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2359 ResourceMark rm;
2360 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2361 const char* klass_name = klass->external_name();
2362
2363 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2364
2365 // one by one registration natives for exception catching
2366 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2367 CHECK_JNI_EXCEPTION(env);
2368 for (int i = 0, n = method_count; i < n; ++i) {
2369 // Skip dummy entries
2370 if (method_array[i].fnPtr == nullptr) continue;
2371 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2372 jthrowable throwable_obj = env->ExceptionOccurred();
2373 if (throwable_obj != nullptr) {
2374 env->ExceptionClear();
2375 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2376 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2377 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2378 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2379 klass_name, method_array[i].name, method_array[i].signature);
2380 }
2381 } else {
2382 // Registration failed unexpectedly.
2383 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2384 klass_name, method_array[i].name, method_array[i].signature);
2385 env->UnregisterNatives(wbclass);
2386 break;
2387 }
2388 }
2389 }
2390 }
2391
2392 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2393 // can't be in VM when we call JNI
2394 ThreadToNativeFromVM ttnfv(thread);
2395 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2396 CHECK_JNI_EXCEPTION_(env, 0);
2397 int ret;
2398 {
2399 ThreadInVMfromNative ttvfn(thread); // back to VM
2400 ret = DirectivesParser::parse_string(dir, tty);
2401 }
2402 env->ReleaseStringUTFChars(compDirect, dir);
2403 // -1 for error parsing directive. Return 0 as number of directives added.
2404 if (ret == -1) {
2405 ret = 0;
2406 }
2407 return (jint) ret;
2408 WB_END
2409
2410 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2411 DirectivesStack::pop(count);
2412 WB_END
2413
2414 // Checks that the library libfile has the noexecstack bit set.
2415 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2416 jboolean ret = false;
2417 #ifdef LINUX
2418 // Can't be in VM when we call JNI.
2419 ThreadToNativeFromVM ttnfv(thread);
2420 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2421 CHECK_JNI_EXCEPTION_(env, 0);
2422 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2423 env->ReleaseStringUTFChars(libfile, lf);
2424 #endif
2425 return ret;
2426 WB_END
2427
2428 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2429 LINUX_ONLY(return OSContainer::is_containerized();)
2430 return false;
2431 WB_END
2432
2433 // Physical memory of the host machine (including containers)
2434 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2435 LINUX_ONLY(return os::Linux::physical_memory();)
2436 return os::physical_memory();
2437 WB_END
2438
2439 // Physical swap of the host machine (including containers), Linux only.
2440 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2441 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2442 return -1; // Not used/implemented on other platforms
2443 WB_END
2444
2445 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2446 jobject o,
2447 jstring proc_cgroups,
2448 jstring proc_self_cgroup,
2449 jstring proc_self_mountinfo))
2450 jint ret = 0;
2451 #ifdef LINUX
2452 ThreadToNativeFromVM ttnfv(thread);
2453 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2454 CHECK_JNI_EXCEPTION_(env, 0);
2455 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2456 CHECK_JNI_EXCEPTION_(env, 0);
2457 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2458 CHECK_JNI_EXCEPTION_(env, 0);
2459 u1 cg_type_flags = 0;
2460 // This sets cg_type_flags
2461 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2462 ret = (jint)cg_type_flags;
2463 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2464 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2465 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2466 #endif
2467 return ret;
2468 WB_END
2469
2470 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2471 os::print_os_info(tty);
2472 WB_END
2473
2474 // Elf decoder
2475 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2476 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2477 ElfFile::_do_not_cache_elf_section = true;
2478 #endif
2479 WB_END
2480
2481 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2482 return (jlong) ResolvedMethodTable::items_count();
2483 WB_END
2484
2485 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2486 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2487 WB_END
2488
2489 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2490 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2491 // Return size in bytes.
2492 return k->size() * wordSize;
2493 WB_END
2494
2495 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2496 // It explains how the thread's priority field is used for test state coordination.
2497 //
2498 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2499 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2500 jlong tid = java_lang_Thread::thread_id(target_oop);
2501 JavaThread* target = java_lang_Thread::thread(target_oop);
2502
2503 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2504 ThreadsListHandle tlh;
2505
2506 // Look up the target thread by tid to ensure it is present
2507 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2508 if (t == nullptr) {
2509 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2510 }
2511
2512 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2513 // Allow target to terminate by boosting priority
2514 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2515
2516 // Now wait for the target to terminate
2517 while (!target->is_terminated()) {
2518 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2519 os::naked_short_sleep(0);
2520 }
2521
2522 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2523
2524 // Now release the GC inducing thread - we have to re-resolve the external oop that
2525 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2526 oop original = JNIHandles::resolve_non_null(target_handle);
2527 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2528
2529 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2530
2531 // The Java code should be creating garbage and triggering GC, which would potentially move
2532 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2533 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2534 // kick in.
2535 for (int i = 0; i < 5; i++) {
2536 oop original = JNIHandles::resolve_non_null(target_handle);
2537 oop current = t->threadObj();
2538 if (original != current) {
2539 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2540 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2541 } else {
2542 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2543 ThreadBlockInVM tbivm(thread);
2544 os::naked_short_sleep(50);
2545 }
2546 }
2547 WB_END
2548
2549 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2550 ResourceMark rm; // for verify
2551 stringStream st;
2552 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2553 frame* current_frame = fst.current();
2554 if (log) {
2555 current_frame->print_value_on(&st, nullptr);
2556 }
2557 current_frame->verify(fst.register_map());
2558 }
2559 if (log) {
2560 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2561 tty->print_raw(st.freeze());
2562 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2563 }
2564 WB_END
2565
2566 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2567 #if INCLUDE_JVMTI
2568 return JNI_TRUE;
2569 #else
2570 return JNI_FALSE;
2571 #endif
2572 WB_END
2573
2574 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2575 os::naked_short_sleep(time);
2576 WB_END
2577
2578 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2579 ThreadToNativeFromVM ttn(thread);
2580 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2581 CHECK_JNI_EXCEPTION_(env, nullptr);
2582 return info_string;
2583 WB_END
2584
2585 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2586 GCLocker::lock_critical(thread);
2587 WB_END
2588
2589 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2590 GCLocker::unlock_critical(thread);
2591 WB_END
2592
2593 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2594 if (!Continuations::enabled()) {
2595 tty->print_cr("WB error: must be Continuations::enabled()!");
2596 return JNI_FALSE;
2597 }
2598 jboolean result = false;
2599 #if INCLUDE_JVMTI
2600 if (enable) {
2601 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2602 } else {
2603 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2604 }
2605 #endif
2606 return result;
2607 WB_END
2608
2609 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2610 void* const from = (void*)addr;
2611 void* const to = (void*)(addr + size);
2612 if (from > to) {
2613 os::pretouch_memory(from, to, os::vm_page_size());
2614 }
2615 WB_END
2616
2617 #define CC (char*)
2618
2619 static JNINativeMethod methods[] = {
2620 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2621 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2622 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2623 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2624 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2625 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2626 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2627 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2628 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2629 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2630 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2631 {CC"parseCommandLine0",
2632 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2633 (void*) &WB_ParseCommandLine
2634 },
2635 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2636 (void*)&WB_AddToBootstrapClassLoaderSearch},
2637 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2638 (void*)&WB_AddToSystemClassLoaderSearch},
2639 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2640 (void*)&WB_GetCompressedOopsMaxHeapSize},
2641 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2642 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2643 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2644 #if INCLUDE_CDS
2645 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2646 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2647 #endif
2648 #if INCLUDE_G1GC
2649 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2650 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2651 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2652 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2653 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2654 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2655 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2656 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2657 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2658 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2659 (void*)&WB_G1AuxiliaryMemoryUsage },
2660 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2661 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2662 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2663 #endif // INCLUDE_G1GC
2664 #if INCLUDE_PARALLELGC
2665 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2666 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2667 #endif
2668 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2669 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2670 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2671 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2672 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2673 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2674 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2675 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2676 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2677 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2678 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2679 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2680 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2681 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2682 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2683 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2684 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2685 (void*)&WB_DeoptimizeMethod },
2686 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2687 (void*)&WB_IsMethodCompiled },
2688 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2689 (void*)&WB_IsMethodCompilable},
2690 {CC"isMethodQueuedForCompilation0",
2691 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2692 {CC"isIntrinsicAvailable0",
2693 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2694 (void*)&WB_IsIntrinsicAvailable},
2695 {CC"makeMethodNotCompilable0",
2696 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2697 {CC"testSetDontInlineMethod0",
2698 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2699 {CC"getMethodCompilationLevel0",
2700 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2701 {CC"getMethodDecompileCount0",
2702 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2703 {CC"getMethodTrapCount0",
2704 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2705 (void*)&WB_GetMethodTrapCount},
2706 {CC"getDeoptCount0",
2707 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2708 {CC"getMethodEntryBci0",
2709 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2710 {CC"getCompileQueueSize",
2711 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2712 {CC"testSetForceInlineMethod0",
2713 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2714 {CC"enqueueMethodForCompilation0",
2715 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2716 {CC"enqueueInitializerForCompilation0",
2717 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2718 {CC"markMethodProfiled",
2719 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2720 {CC"clearMethodState0",
2721 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2722 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2723 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2724 {CC"matchesMethod",
2725 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2726 (void*)&WB_MatchesMethod},
2727 {CC"matchesInline",
2728 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2729 (void*)&WB_MatchesInline},
2730 {CC"shouldPrintAssembly",
2731 CC"(Ljava/lang/reflect/Executable;I)Z",
2732 (void*)&WB_ShouldPrintAssembly},
2733
2734 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2735 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2736 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2737 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2738 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2739 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2740 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2741 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2742 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2743 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2744 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2745 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2746 (void*)&WB_SetStringVMFlag},
2747 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2748 (void*)&WB_GetBooleanVMFlag},
2749 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2750 (void*)&WB_GetIntVMFlag},
2751 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2752 (void*)&WB_GetUintVMFlag},
2753 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2754 (void*)&WB_GetIntxVMFlag},
2755 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2756 (void*)&WB_GetUintxVMFlag},
2757 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2758 (void*)&WB_GetUint64VMFlag},
2759 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2760 (void*)&WB_GetSizeTVMFlag},
2761 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2762 (void*)&WB_GetDoubleVMFlag},
2763 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2764 (void*)&WB_GetStringVMFlag},
2765 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2766 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2767 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2768 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2769 {CC"allocateMetaspace",
2770 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2771 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2772 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2773 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2774 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2775 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2776 (void*)&WB_GetNMethod },
2777 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2778 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2779 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2780 {CC"getCompilationActivityMode",
2781 CC"()I", (void*)&WB_GetCompilationActivityMode},
2782 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2783 (void*)&WB_GetMethodData },
2784 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2785 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2786 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2787 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2788 (void*)&WB_DefineModule },
2789 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2790 (void*)&WB_AddModuleExports },
2791 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2792 (void*)&WB_AddReadsModule },
2793 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2794 (void*)&WB_AddModuleExportsToAllUnnamed },
2795 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2796 (void*)&WB_AddModuleExportsToAll },
2797 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2798 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2799 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2800 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2801 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2802 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2803 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2804 {CC"remapInstructionOperandFromCPCache0",
2805 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2806 {CC"encodeConstantPoolIndyIndex0",
2807 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2808 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2809 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2810 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2811 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2812 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2813 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2814 {CC"getMethodBooleanOption",
2815 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2816 (void*)&WB_GetMethodBooleaneOption},
2817 {CC"getMethodIntxOption",
2818 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2819 (void*)&WB_GetMethodIntxOption},
2820 {CC"getMethodUintxOption",
2821 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2822 (void*)&WB_GetMethodUintxOption},
2823 {CC"getMethodDoubleOption",
2824 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2825 (void*)&WB_GetMethodDoubleOption},
2826 {CC"getMethodStringOption",
2827 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2828 (void*)&WB_GetMethodStringOption},
2829 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2830 (void*)&WB_GetDefaultArchivePath},
2831 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2832 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2833 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2834 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2835 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2836 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2837 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2838 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2839 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2840 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2841 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2842 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2843 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2844 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2845 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2846 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2847
2848 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2849 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2850 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2851 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2852 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2853 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2854 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2855 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2856 (void*)&WB_AddCompilerDirective },
2857 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2858 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2859 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2860 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2861 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2862 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2863 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2864 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2865 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2866 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2867 (void*)&WB_ConcurrentGCRunTo},
2868 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2869 (void*)&WB_CheckLibSpecifiesNoexecstack},
2870 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2871 {CC"validateCgroup",
2872 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2873 (void*)&WB_ValidateCgroup },
2874 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2875 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2876 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2877 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2878 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2879 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2880 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2881
2882 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2883 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2884 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2885 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2886 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2887 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2888 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2889 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2890 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2891 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2892 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2893
2894 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2895 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2896 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2897
2898 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2899 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2900 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2901 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2902 };
2903
2904
2905 #undef CC
2906
2907 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2908 {
2909 if (WhiteBoxAPI) {
2910 // Make sure that wbclass is loaded by the null classloader
2911 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2912 Handle loader(THREAD, ik->class_loader());
2913 if (loader.is_null()) {
2914 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2915 WhiteBox::set_used();
2916 }
2917 }
2918 }
2919 JVM_END