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/javaClasses.inline.hpp"
35 #include "classfile/modules.hpp"
36 #include "classfile/protectionDomainCache.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/codeCache.hpp"
42 #include "compiler/compilationPolicy.hpp"
43 #include "compiler/directivesParser.hpp"
44 #include "compiler/methodMatcher.hpp"
45 #include "gc/shared/concurrentGCBreakpoints.hpp"
46 #include "gc/shared/gcConfig.hpp"
47 #include "gc/shared/gcLocker.inline.hpp"
48 #include "gc/shared/genArguments.hpp"
49 #include "gc/shared/genCollectedHeap.hpp"
50 #include "jvmtifiles/jvmtiEnv.hpp"
51 #include "logging/log.hpp"
52 #include "memory/iterator.hpp"
53 #include "memory/metadataFactory.hpp"
54 #include "memory/iterator.inline.hpp"
55 #include "memory/metaspace/testHelpers.hpp"
56 #include "memory/metaspaceUtils.hpp"
57 #include "memory/oopFactory.hpp"
58 #include "memory/resourceArea.hpp"
59 #include "memory/universe.hpp"
60 #include "oops/array.hpp"
61 #include "oops/compressedOops.hpp"
62 #include "oops/compressedOops.inline.hpp"
63 #include "oops/constantPool.inline.hpp"
64 #include "oops/klass.inline.hpp"
65 #include "oops/method.inline.hpp"
66 #include "oops/objArrayKlass.hpp"
67 #include "oops/objArrayOop.inline.hpp"
68 #include "oops/oop.inline.hpp"
69 #include "oops/objArrayOop.inline.hpp"
70 #include "oops/typeArrayOop.inline.hpp"
71 #include "prims/jvmtiEnvBase.hpp"
72 #include "prims/resolvedMethodTable.hpp"
73 #include "prims/wbtestmethods/parserTests.hpp"
74 #include "prims/whitebox.inline.hpp"
75 #include "runtime/arguments.hpp"
76 #include "runtime/atomic.hpp"
77 #include "runtime/deoptimization.hpp"
78 #include "runtime/fieldDescriptor.inline.hpp"
79 #include "runtime/flags/jvmFlag.hpp"
80 #include "runtime/flags/jvmFlagAccess.hpp"
81 #include "runtime/frame.inline.hpp"
82 #include "runtime/handles.inline.hpp"
83 #include "runtime/handshake.hpp"
84 #include "runtime/interfaceSupport.inline.hpp"
85 #include "runtime/javaCalls.hpp"
86 #include "runtime/javaThread.inline.hpp"
87 #include "runtime/jniHandles.inline.hpp"
88 #include "runtime/os.hpp"
89 #include "runtime/stackFrameStream.inline.hpp"
90 #include "runtime/synchronizer.hpp"
91 #include "runtime/threadSMR.hpp"
92 #include "runtime/vframe.hpp"
93 #include "runtime/vm_version.hpp"
94 #include "services/mallocSiteTable.hpp"
95 #include "services/memoryService.hpp"
96 #include "services/memTracker.hpp"
97 #include "utilities/align.hpp"
98 #include "utilities/debug.hpp"
99 #include "utilities/elfFile.hpp"
100 #include "utilities/exceptions.hpp"
101 #include "utilities/macros.hpp"
102 #include "utilities/nativeCallStack.hpp"
103 #include "utilities/ostream.hpp"
104 #if INCLUDE_G1GC
105 #include "gc/g1/g1Arguments.hpp"
106 #include "gc/g1/g1CollectedHeap.inline.hpp"
107 #include "gc/g1/g1ConcurrentMark.hpp"
108 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
109 #include "gc/g1/heapRegionManager.hpp"
110 #include "gc/g1/heapRegionRemSet.inline.hpp"
111 #endif // INCLUDE_G1GC
112 #if INCLUDE_PARALLELGC
113 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
114 #endif // INCLUDE_PARALLELGC
115 #if INCLUDE_ZGC
116 #include "gc/z/zAddress.inline.hpp"
117 #endif // INCLUDE_ZGC
118 #if INCLUDE_JVMCI
119 #include "jvmci/jvmciEnv.hpp"
120 #include "jvmci/jvmciRuntime.hpp"
121 #endif
122 #ifdef LINUX
123 #include "os_linux.hpp"
124 #include "osContainer_linux.hpp"
125 #include "cgroupSubsystem_linux.hpp"
126 #endif
127
128 #define CHECK_JNI_EXCEPTION_(env, value) \
129 do { \
130 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
131 THREAD->clear_pending_jni_exception_check(); \
132 if (HAS_PENDING_EXCEPTION) { \
133 return(value); \
134 } \
135 } while (0)
136
137 #define CHECK_JNI_EXCEPTION(env) \
138 do { \
139 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
140 THREAD->clear_pending_jni_exception_check(); \
141 if (HAS_PENDING_EXCEPTION) { \
142 return; \
143 } \
144 } while (0)
145
146 bool WhiteBox::_used = false;
147 volatile bool WhiteBox::compilation_locked = false;
148
149 class VM_WhiteBoxOperation : public VM_Operation {
150 public:
151 VM_WhiteBoxOperation() { }
152 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
153 bool allow_nested_vm_operations() const { return true; }
154 };
155
156
157 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
158 return (jlong)(void*)JNIHandles::resolve(obj);
159 WB_END
160
161 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
162 return heapOopSize;
163 WB_END
164
165 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
166 return (jint)os::vm_page_size();
167 WB_END
168
169 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
170 return os::vm_allocation_granularity();
171 WB_END
172
173 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
174 return os::large_page_size();
175 WB_END
176
177 class WBIsKlassAliveClosure : public LockedClassesDo {
178 Symbol* _name;
179 int _count;
180 public:
181 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
182
183 void do_klass(Klass* k) {
184 Symbol* ksym = k->name();
185 if (ksym->fast_compare(_name) == 0) {
186 _count++;
187 } else if (k->is_instance_klass()) {
188 // Need special handling for hidden classes because the JVM
189 // appends "+<hex-address>" to hidden class names.
190 InstanceKlass *ik = InstanceKlass::cast(k);
191 if (ik->is_hidden()) {
192 ResourceMark rm;
193 char* k_name = ksym->as_C_string();
194 // Find the first '+' char and truncate the string at that point.
195 // NOTE: This will not work correctly if the original hidden class
196 // name contains a '+'.
197 char* plus_char = strchr(k_name, '+');
198 if (plus_char != nullptr) {
199 *plus_char = 0;
200 char* c_name = _name->as_C_string();
201 if (strcmp(c_name, k_name) == 0) {
202 _count++;
203 }
204 }
205 }
206 }
207 }
208
209 int count() const {
210 return _count;
211 }
212 };
213
214 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
215 oop h_name = JNIHandles::resolve(name);
216 if (h_name == nullptr) {
217 return 0;
218 }
219 Symbol* sym = java_lang_String::as_symbol(h_name);
220 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
221
222 WBIsKlassAliveClosure closure(sym);
223 ClassLoaderDataGraph::classes_do(&closure);
224
225 // Return the count of alive classes with this name.
226 return closure.count();
227 WB_END
228
229 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
230 oop h_name = JNIHandles::resolve(name);
231 if (h_name == nullptr) {
232 return 0;
233 }
234 Symbol* sym = java_lang_String::as_symbol(h_name);
235 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
236 return (jint)sym->refcount();
237 WB_END
238
239
240 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
241 #if INCLUDE_JVMTI
242 ResourceMark rm;
243 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
244 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
245 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
246 assert(err == JVMTI_ERROR_NONE, "must not fail");
247 #endif
248 }
249 WB_END
250
251 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
252 #if INCLUDE_JVMTI
253 ResourceMark rm;
254 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
255 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
256 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
257 assert(err == JVMTI_ERROR_NONE, "must not fail");
258 #endif
259 }
260 WB_END
261
262
263 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
264 return (jlong)Arguments::max_heap_for_compressed_oops();
265 }
266 WB_END
267
268 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
269 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
270 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
271 MinHeapSize,
272 InitialHeapSize,
273 MaxHeapSize,
274 SpaceAlignment,
275 HeapAlignment);
276 }
277 WB_END
278
279 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
280 size_t granularity = os::vm_allocation_granularity();
281 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
282 VirtualSpace vs;
283 vs.initialize(rhs, 50 * granularity);
284
285 // Check if constraints are complied
286 if (!( UseCompressedOops && rhs.base() != nullptr &&
287 CompressedOops::base() != nullptr &&
288 CompressedOops::use_implicit_null_checks() )) {
289 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
290 "\tUseCompressedOops is %d\n"
291 "\trhs.base() is " PTR_FORMAT "\n"
292 "\tCompressedOops::base() is " PTR_FORMAT "\n"
293 "\tCompressedOops::use_implicit_null_checks() is %d",
294 UseCompressedOops,
295 p2i(rhs.base()),
296 p2i(CompressedOops::base()),
297 CompressedOops::use_implicit_null_checks());
298 return;
299 }
300 tty->print_cr("Reading from no access area... ");
301 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
302 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
303 WB_END
304
305 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
306 size_t magnitude, size_t iterations) {
307 size_t granularity = os::vm_allocation_granularity();
308 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
309 VirtualSpace vs;
310 if (!vs.initialize(rhs, 0)) {
311 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
312 return 3;
313 }
314
315 int seed = os::random();
316 tty->print_cr("Random seed is %d", seed);
317
318 for (size_t i = 0; i < iterations; i++) {
319
320 // Whether we will shrink or grow
321 bool shrink = os::random() % 2L == 0;
322
323 // Get random delta to resize virtual space
324 size_t delta = (size_t)os::random() % magnitude;
325
326 // If we are about to shrink virtual space below zero, then expand instead
327 if (shrink && vs.committed_size() < delta) {
328 shrink = false;
329 }
330
331 // Resizing by delta
332 if (shrink) {
333 vs.shrink_by(delta);
334 } else {
335 // If expanding fails expand_by will silently return false
336 vs.expand_by(delta, true);
337 }
338 }
339 return 0;
340 }
341
342 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
343 jlong reserved_space_size, jlong magnitude, jlong iterations))
344 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
345 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
346 iterations);
347 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
348 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
349 return 1;
350 }
351
352 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
353 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
354 if (sizeof(size_t) < sizeof(jlong)) {
355 jlong size_t_max_value = (jlong)SIZE_MAX;
356 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
357 || iterations > size_t_max_value) {
358 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
359 return 2;
360 }
361 }
362
363 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
364 (size_t) magnitude, (size_t) iterations);
365 WB_END
366
367 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
368 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
369 WB_END
370
371 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
372 #if INCLUDE_JVMCI
373 if (EnableJVMCI) {
374 // Enter the JVMCI env that will be used by the CompileBroker.
375 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
376 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
377 }
378 #endif
379 return false;
380 WB_END
381
382 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
383 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
384 WB_END
385
386 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
387 return GCConfig::is_gc_selected_ergonomically();
388 WB_END
389
390 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
391 oop p = JNIHandles::resolve(obj);
392 #if INCLUDE_G1GC
393 if (UseG1GC) {
394 G1CollectedHeap* g1h = G1CollectedHeap::heap();
395 const HeapRegion* hr = g1h->heap_region_containing(p);
396 return !(hr->is_young());
397 }
398 #endif
399 #if INCLUDE_PARALLELGC
400 if (UseParallelGC) {
401 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
402 return !psh->is_in_young(p);
403 }
404 #endif
405 #if INCLUDE_ZGC
406 if (UseZGC) {
407 if (ZGenerational) {
408 return ZHeap::heap()->is_old(to_zaddress(p));
409 } else {
410 return Universe::heap()->is_in(p);
411 }
412 }
413 #endif
414 #if INCLUDE_SHENANDOAHGC
415 if (UseShenandoahGC) {
416 return Universe::heap()->is_in(p);
417 }
418 #endif
419 GenCollectedHeap* gch = GenCollectedHeap::heap();
420 return !gch->is_in_young(p);
421 WB_END
422
423 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
424 oop p = JNIHandles::resolve(obj);
425 return p->size() * HeapWordSize;
426 WB_END
427
428 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
429 return (jlong)SpaceAlignment;
430 WB_END
431
432 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
433 return (jlong)HeapAlignment;
434 WB_END
435
436 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
437 return Universe::heap()->supports_concurrent_gc_breakpoints();
438 WB_END
439
440 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
441 ConcurrentGCBreakpoints::acquire_control();
442 WB_END
443
444 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
445 ConcurrentGCBreakpoints::release_control();
446 WB_END
447
448 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
449 ConcurrentGCBreakpoints::run_to_idle();
450 WB_END
451
452 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
453 Handle h_name(THREAD, JNIHandles::resolve(at));
454 ResourceMark rm;
455 const char* c_name = java_lang_String::as_utf8_string(h_name());
456 return ConcurrentGCBreakpoints::run_to(c_name);
457 WB_END
458
459 #if INCLUDE_G1GC
460
461 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
462 if (UseG1GC) {
463 G1CollectedHeap* g1h = G1CollectedHeap::heap();
464 oop result = JNIHandles::resolve(obj);
465 const HeapRegion* hr = g1h->heap_region_containing(result);
466 return hr->is_humongous();
467 }
468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
469 WB_END
470
471 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
472 if (UseG1GC) {
473 G1CollectedHeap* g1h = G1CollectedHeap::heap();
474 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
475 return hr->is_humongous();
476 }
477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
478 WB_END
479
480 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
481 if (UseG1GC) {
482 G1CollectedHeap* g1h = G1CollectedHeap::heap();
483 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
484 return hr->is_free();
485 }
486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
487 WB_END
488
489 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
490 if (UseG1GC) {
491 G1CollectedHeap* g1h = G1CollectedHeap::heap();
492 size_t nr = g1h->max_regions();
493 return (jlong)nr;
494 }
495 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
496 WB_END
497
498 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
499 if (UseG1GC) {
500 G1CollectedHeap* g1h = G1CollectedHeap::heap();
501 size_t nr = g1h->num_free_regions();
502 return (jlong)nr;
503 }
504 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
505 WB_END
506
507 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
508 if (UseG1GC) {
509 G1CollectedHeap* g1h = G1CollectedHeap::heap();
510 return g1h->concurrent_mark()->cm_thread()->in_progress();
511 }
512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
513 WB_END
514
515 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
516 if (UseG1GC) {
517 G1CollectedHeap* g1h = G1CollectedHeap::heap();
518 G1ConcurrentMark* cm = g1h->concurrent_mark();
519 return cm->completed_mark_cycles();
520 }
521 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
522 WB_END
523
524 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
525 if (UseG1GC) {
526 return (jint)HeapRegion::GrainBytes;
527 }
528 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
529 WB_END
530
531 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
532 if (UseG1GC) {
533 return G1CollectedHeap::heap()->has_uncommittable_regions();
534 }
535 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
536 WB_END
537
538 #endif // INCLUDE_G1GC
539
540 #if INCLUDE_PARALLELGC
541
542 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
543 if (UseParallelGC) {
544 return GenAlignment;
545 }
546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
547 WB_END
548
549 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
550 if (UseParallelGC) {
551 return GenAlignment;
552 }
553 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
554 WB_END
555
556 #endif // INCLUDE_PARALLELGC
557
558 #if INCLUDE_G1GC
559
560 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
561 if (UseG1GC) {
562 ResourceMark rm(THREAD);
563 G1CollectedHeap* g1h = G1CollectedHeap::heap();
564 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
565 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
566 return JNIHandles::make_local(THREAD, h());
567 }
568 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
569 WB_END
570
571 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
572 if (UseG1GC) {
573 G1NUMA* numa = G1NUMA::numa();
574 return (jint)numa->num_active_nodes();
575 }
576 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
577 WB_END
578
579 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
580 if (UseG1GC) {
581 G1NUMA* numa = G1NUMA::numa();
582 int num_node_ids = (int)numa->num_active_nodes();
583 const int* node_ids = numa->node_ids();
584
585 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
586 for (int i = 0; i < num_node_ids; i++) {
587 result->int_at_put(i, (jint)node_ids[i]);
588 }
589 return (jintArray) JNIHandles::make_local(THREAD, result);
590 }
591 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
592 WB_END
593
594 class OldRegionsLivenessClosure: public HeapRegionClosure {
595
596 private:
597 const int _liveness;
598 size_t _total_count;
599 size_t _total_memory;
600 size_t _total_memory_to_free;
601
602 public:
603 OldRegionsLivenessClosure(int liveness) :
604 _liveness(liveness),
605 _total_count(0),
606 _total_memory(0),
607 _total_memory_to_free(0) { }
608
609 size_t total_count() { return _total_count; }
610 size_t total_memory() { return _total_memory; }
611 size_t total_memory_to_free() { return _total_memory_to_free; }
612
613 bool do_heap_region(HeapRegion* r) {
614 if (r->is_old()) {
615 size_t live = r->live_bytes();
616 size_t size = r->used();
617 size_t reg_size = HeapRegion::GrainBytes;
618 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
619 _total_memory += size;
620 ++_total_count;
621 if (size == reg_size) {
622 // We don't include non-full regions since they are unlikely included in mixed gc
623 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
624 _total_memory_to_free += size - live;
625 }
626 }
627 }
628 return false;
629 }
630 };
631
632
633 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
634 if (!UseG1GC) {
635 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
636 }
637 if (liveness < 0) {
638 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
639 }
640
641 G1CollectedHeap* g1h = G1CollectedHeap::heap();
642 OldRegionsLivenessClosure rli(liveness);
643 g1h->heap_region_iterate(&rli);
644
645 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
646 result->long_at_put(0, rli.total_count());
647 result->long_at_put(1, rli.total_memory());
648 result->long_at_put(2, rli.total_memory_to_free());
649 return (jlongArray) JNIHandles::make_local(THREAD, result);
650 WB_END
651
652 #endif // INCLUDE_G1GC
653
654 // Alloc memory using the test memory type so that we can use that to see if
655 // NMT picks it up correctly
656 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
657 jlong addr = 0;
658 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
659 return addr;
660 WB_END
661
662 // Alloc memory with pseudo call stack. The test can create pseudo malloc
663 // allocation site to stress the malloc tracking.
664 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
665 address pc = (address)(size_t)pseudo_stack;
666 NativeCallStack stack(&pc, 1);
667 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
668 WB_END
669
670 // Alloc memory with pseudo call stack and specific memory type.
671 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
672 address pc = (address)(size_t)pseudo_stack;
673 NativeCallStack stack(&pc, 1);
674 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
675 WB_END
676
677 // Free the memory allocated by NMTAllocTest
678 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
679 os::free((void*)(uintptr_t)mem);
680 WB_END
681
682 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
683 jlong addr = 0;
684
685 addr = (jlong)(uintptr_t)os::reserve_memory(size);
686 MemTracker::record_virtual_memory_type((address)addr, mtTest);
687
688 return addr;
689 WB_END
690
691 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
692 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
693 MemTracker::record_virtual_memory_type((address)addr, mtTest);
694
695 return addr;
696 WB_END
697
698 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
699 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
700 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
701 WB_END
702
703 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
704 os::uncommit_memory((char *)(uintptr_t)addr, size);
705 WB_END
706
707 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
708 os::release_memory((char *)(uintptr_t)addr, size);
709 WB_END
710
711 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
712 int hash_size = MallocSiteTable::hash_buckets();
713 assert(hash_size > 0, "NMT hash_size should be > 0");
714 return (jint)hash_size;
715 WB_END
716
717 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
718 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
719 return (jlong)arena;
720 WB_END
721
722 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
723 Arena* a = (Arena*)arena;
724 delete a;
725 WB_END
726
727 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
728 Arena* a = (Arena*)arena;
729 a->Amalloc(size_t(size));
730 WB_END
731
732 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
733 assert(method != nullptr, "method should not be null");
734 ThreadToNativeFromVM ttn(thread);
735 return env->FromReflectedMethod(method);
736 }
737
738 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
739 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
740 private:
741 int _result;
742 const bool _make_not_entrant;
743 public:
744 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
745 _result(0), _make_not_entrant(make_not_entrant) { }
746 int result() const { return _result; }
747
748 void doit() {
749 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
750 if (t->has_last_Java_frame()) {
751 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
752 frame* f = fst.current();
753 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
754 Deoptimization::deoptimize(t, *f);
755 if (_make_not_entrant) {
756 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
757 assert(cm != nullptr, "sanity check");
758 cm->make_not_entrant();
759 }
760 ++_result;
761 }
762 }
763 }
764 }
765 }
766 };
767
768 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
769 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
770 VMThread::execute(&op);
771 return op.result();
772 WB_END
773
774 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
775 bool result = false;
776 if (thread->has_last_Java_frame()) {
777 RegisterMap reg_map(thread,
778 RegisterMap::UpdateMap::include,
779 RegisterMap::ProcessFrames::include,
780 RegisterMap::WalkContinuation::skip);
781 javaVFrame *jvf = thread->last_java_vframe(®_map);
782 for (jint d = 0; d < depth && jvf != nullptr; d++) {
783 jvf = jvf->java_sender();
784 }
785 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
786 }
787 return result;
788 WB_END
789
790 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
791 DeoptimizationScope deopt_scope;
792 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
793 deopt_scope.deoptimize_marked();
794 WB_END
795
796 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
797 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
798 int result = 0;
799 CHECK_JNI_EXCEPTION_(env, result);
800
801 DeoptimizationScope deopt_scope;
802 {
803 MutexLocker mu(Compile_lock);
804 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
805 if (is_osr) {
806 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
807 } else {
808 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
809 if (mh->code() != nullptr) {
810 deopt_scope.mark(mh->code());
811 ++result;
812 }
813 }
814 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
815 }
816
817 deopt_scope.deoptimize_marked();
818
819 return result;
820 WB_END
821
822 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
823 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
824 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
825 MutexLocker mu(Compile_lock);
826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
827 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
828 if (code == nullptr) {
829 return JNI_FALSE;
830 }
831 return !code->is_marked_for_deoptimization();
832 WB_END
833
834 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
835 if (comp == nullptr) {
836 return true;
837 }
838 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
839 bool exclude = directive->ExcludeOption;
840 DirectivesStack::release(directive);
841 return exclude;
842 }
843
844 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
845 if (is_osr) {
846 return CompilationPolicy::can_be_osr_compiled(mh, level);
847 } else {
848 return CompilationPolicy::can_be_compiled(mh, level);
849 }
850 }
851
852 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
853 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
854 return false;
855 }
856 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
857 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
858 MutexLocker mu(Compile_lock);
859 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
860
861 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
862 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
863 // to exclude a compilation of 'method'.
864 if (comp_level == CompLevel_any) {
865 // Both compilers could have ExcludeOption set. Check all combinations.
866 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
867 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
868 if (excluded_c1 && excluded_c2) {
869 // Compilation of 'method' excluded by both compilers.
870 return false;
871 }
872
873 if (excluded_c1) {
874 // C1 only has ExcludeOption set: Check if compilable with C2.
875 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
876 } else if (excluded_c2) {
877 // C2 only has ExcludeOption set: Check if compilable with C1.
878 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
879 }
880 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
881 // Compilation of 'method' excluded by compiler used for 'comp_level'.
882 return false;
883 }
884
885 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
886 WB_END
887
888 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
889 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
890 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
891 MutexLocker mu(Compile_lock);
892 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
893 return mh->queued_for_compilation();
894 WB_END
895
896 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
897 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
898 return false; // Intrinsic is not available on a non-existent compilation level.
899 }
900 jmethodID method_id, compilation_context_id;
901 method_id = reflected_method_to_jmid(thread, env, method);
902 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
903 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
904
905 DirectiveSet* directive;
906 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
907 assert(comp != nullptr, "compiler not available");
908 if (compilation_context != nullptr) {
909 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
910 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
911 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
912 directive = DirectivesStack::getMatchingDirective(cch, comp);
913 } else {
914 // Calling with null matches default directive
915 directive = DirectivesStack::getDefaultDirective(comp);
916 }
917 bool result = comp->is_intrinsic_available(mh, directive);
918 DirectivesStack::release(directive);
919 return result;
920 WB_END
921
922 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
923 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
924 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
926 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
927 return (code != nullptr ? code->comp_level() : CompLevel_none);
928 WB_END
929
930 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
931 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
932 CHECK_JNI_EXCEPTION(env);
933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
934 if (is_osr) {
935 mh->set_not_osr_compilable("WhiteBox", comp_level);
936 } else {
937 mh->set_not_compilable("WhiteBox", comp_level);
938 }
939 WB_END
940
941 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
942 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
943 CHECK_JNI_EXCEPTION_(env, 0);
944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
945 uint cnt = 0;
946 MethodData* mdo = mh->method_data();
947 if (mdo != nullptr) {
948 cnt = mdo->decompile_count();
949 }
950 return cnt;
951 WB_END
952
953 // Get the trap count of a method for a specific reason. If the trap count for
954 // that reason did overflow, this includes the overflow trap count of the method.
955 // If 'reason' is null, the sum of the traps for all reasons will be returned.
956 // This number includes the overflow trap count if the trap count for any reason
957 // did overflow.
958 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
959 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
960 CHECK_JNI_EXCEPTION_(env, 0);
961 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
962 uint cnt = 0;
963 MethodData* mdo = mh->method_data();
964 if (mdo != nullptr) {
965 ResourceMark rm(THREAD);
966 char* reason_str = (reason_obj == nullptr) ?
967 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
968 bool overflow = false;
969 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
970 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
971 cnt = mdo->trap_count(reason);
972 // Count in the overflow trap count on overflow
973 if (cnt == (uint)-1) {
974 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
975 }
976 break;
977 } else if (reason_str == nullptr) {
978 uint c = mdo->trap_count(reason);
979 if (c == (uint)-1) {
980 c = mdo->trap_count_limit();
981 if (!overflow) {
982 // Count overflow trap count just once
983 overflow = true;
984 c += mdo->overflow_trap_count();
985 }
986 }
987 cnt += c;
988 }
989 }
990 }
991 return cnt;
992 WB_END
993
994 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
995 if (reason_obj == nullptr && action_obj == nullptr) {
996 return Deoptimization::total_deoptimization_count();
997 }
998 ResourceMark rm(THREAD);
999 const char *reason_str = (reason_obj == nullptr) ?
1000 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1001 const char *action_str = (action_obj == nullptr) ?
1002 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1003
1004 return Deoptimization::deoptimization_count(reason_str, action_str);
1005 WB_END
1006
1007 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1008 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1009 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1010 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1011 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1012 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1013 WB_END
1014
1015 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1016 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1017 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1018 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1019 bool result = mh->dont_inline();
1020 mh->set_dont_inline(value == JNI_TRUE);
1021 return result;
1022 WB_END
1023
1024 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1025 if (comp_level == CompLevel_any) {
1026 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1027 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1028 } else {
1029 return CompileBroker::queue_size(comp_level);
1030 }
1031 WB_END
1032
1033 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1034 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1035 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1036 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1037 bool result = mh->force_inline();
1038 mh->set_force_inline(value == JNI_TRUE);
1039 return result;
1040 WB_END
1041
1042 #ifdef LINUX
1043 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1044 const char* proc_self_cgroup,
1045 const char* proc_self_mountinfo,
1046 u1* cg_flags) {
1047 CgroupInfo cg_infos[CG_INFO_LENGTH];
1048 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1049 proc_self_cgroup,
1050 proc_self_mountinfo, cg_flags);
1051 }
1052 #endif
1053
1054 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1055 // Screen for unavailable/bad comp level or null method
1056 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1057 if (method == nullptr) {
1058 tty->print_cr("WB error: request to compile null method");
1059 return false;
1060 }
1061 if (comp_level > CompilationPolicy::highest_compile_level()) {
1062 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1063 return false;
1064 }
1065 if (comp == nullptr) {
1066 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1067 return false;
1068 }
1069
1070 // Check if compilation is blocking
1071 methodHandle mh(THREAD, method);
1072 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1073 bool is_blocking = !directive->BackgroundCompilationOption;
1074 DirectivesStack::release(directive);
1075
1076 // Compile method and check result
1077 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1078 MutexLocker mu(THREAD, Compile_lock);
1079 bool is_queued = mh->queued_for_compilation();
1080 if ((!is_blocking && is_queued) || nm != nullptr) {
1081 return true;
1082 }
1083 // Check code again because compilation may be finished before Compile_lock is acquired.
1084 if (bci == InvocationEntryBci) {
1085 CompiledMethod* code = mh->code();
1086 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1087 return true;
1088 }
1089 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1090 return true;
1091 }
1092 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1093 mh->print_short_name(tty);
1094 tty->cr();
1095 if (is_blocking && is_queued) {
1096 tty->print_cr("WB error: blocking compilation is still in queue!");
1097 }
1098 return false;
1099 }
1100
1101 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1102 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1103 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1104 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1105 WB_END
1106
1107 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1108 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1109 Method* clinit = ik->class_initializer();
1110 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1111 return false;
1112 }
1113 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1114 WB_END
1115
1116 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1117 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1118 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1119
1120 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1121 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1122 bool result = directive->PrintAssemblyOption;
1123 DirectivesStack::release(directive);
1124
1125 return result;
1126 WB_END
1127
1128 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1129 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1130 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1131
1132 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1133
1134 ResourceMark rm(THREAD);
1135 const char* error_msg = nullptr;
1136 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1137 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1138
1139 if (m == nullptr) {
1140 assert(error_msg != nullptr, "Always have an error message");
1141 tty->print_cr("Got error: %s", error_msg);
1142 return -1; // Pattern failed
1143 }
1144
1145 // Pattern works - now check if it matches
1146 int result;
1147 if (m->match(mh, InlineMatcher::force_inline)) {
1148 result = 2; // Force inline match
1149 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1150 result = 1; // Dont inline match
1151 } else {
1152 result = 0; // No match
1153 }
1154 delete m;
1155 return result;
1156 WB_END
1157
1158 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1159 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1160 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1161
1162 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1163
1164 ResourceMark rm;
1165 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1166
1167 const char* error_msg = nullptr;
1168
1169 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1170 if (m == nullptr) {
1171 assert(error_msg != nullptr, "Must have error_msg");
1172 tty->print_cr("Got error: %s", error_msg);
1173 return -1;
1174 }
1175
1176 // Pattern works - now check if it matches
1177 int result = m->matches(mh);
1178 delete m;
1179 assert(result == 0 || result == 1, "Result out of range");
1180 return result;
1181 WB_END
1182
1183 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1184 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1185 CHECK_JNI_EXCEPTION(env);
1186 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1187
1188 MethodData* mdo = mh->method_data();
1189 if (mdo == nullptr) {
1190 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1191 mdo = mh->method_data();
1192 }
1193 mdo->init();
1194 InvocationCounter* icnt = mdo->invocation_counter();
1195 InvocationCounter* bcnt = mdo->backedge_counter();
1196 // set i-counter according to CompilationPolicy::is_method_profiled
1197 icnt->set(Tier4MinInvocationThreshold);
1198 bcnt->set(Tier4CompileThreshold);
1199 WB_END
1200
1201 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1202 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1203 CHECK_JNI_EXCEPTION(env);
1204 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1205 MutexLocker mu(THREAD, Compile_lock);
1206 MethodData* mdo = mh->method_data();
1207 MethodCounters* mcs = mh->method_counters();
1208
1209 if (mdo != nullptr) {
1210 mdo->init();
1211 ResourceMark rm(THREAD);
1212 int arg_count = mdo->method()->size_of_parameters();
1213 for (int i = 0; i < arg_count; i++) {
1214 mdo->set_arg_modified(i, 0);
1215 }
1216 MutexLocker mu(THREAD, mdo->extra_data_lock());
1217 mdo->clean_method_data(/*always_clean*/true);
1218 }
1219
1220 mh->clear_is_not_c1_compilable();
1221 mh->clear_is_not_c2_compilable();
1222 mh->clear_is_not_c2_osr_compilable();
1223 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1224 if (mcs != nullptr) {
1225 mcs->clear_counters();
1226 }
1227 WB_END
1228
1229 template <typename T, int type_enum>
1230 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1231 if (name == nullptr) {
1232 return false;
1233 }
1234 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1235 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1236 CHECK_JNI_EXCEPTION_(env, false);
1237 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1238 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1239 env->ReleaseStringUTFChars(name, flag_name);
1240 return (result == JVMFlag::SUCCESS);
1241 }
1242
1243 template <typename T, int type_enum>
1244 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1245 if (name == nullptr) {
1246 return false;
1247 }
1248 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1249 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1250 CHECK_JNI_EXCEPTION_(env, false);
1251 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1252 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1253 env->ReleaseStringUTFChars(name, flag_name);
1254 return (result == JVMFlag::SUCCESS);
1255 }
1256
1257 template <typename T>
1258 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1259 ResourceMark rm(thread);
1260 jclass clazz = env->FindClass(name->as_C_string());
1261 CHECK_JNI_EXCEPTION_(env, nullptr);
1262 jmethodID methodID = env->GetStaticMethodID(clazz,
1263 vmSymbols::valueOf_name()->as_C_string(),
1264 sig->as_C_string());
1265 CHECK_JNI_EXCEPTION_(env, nullptr);
1266 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1267 CHECK_JNI_EXCEPTION_(env, nullptr);
1268 return result;
1269 }
1270
1271 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1272 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1273 }
1274 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1275 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1276 }
1277 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1278 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1279 }
1280 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1281 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1282 }*/
1283 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1284 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1285 }
1286
1287 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1288 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1289 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1290 CHECK_JNI_EXCEPTION_(env, nullptr);
1291 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1292 env->ReleaseStringUTFChars(name, flag_name);
1293 return result;
1294 }
1295
1296 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1297 const JVMFlag* flag = getVMFlag(thread, env, name);
1298 return (flag != nullptr) && flag->is_constant_in_binary();
1299 WB_END
1300
1301 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1302 const JVMFlag* flag = getVMFlag(thread, env, name);
1303 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1304 WB_END
1305
1306 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1307 bool result;
1308 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1309 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1310 return booleanBox(thread, env, result);
1311 }
1312 return nullptr;
1313 WB_END
1314
1315 template <typename T, int type_enum>
1316 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1317 T result;
1318 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1319 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1320 return longBox(thread, env, result);
1321 }
1322 return nullptr;
1323 }
1324
1325 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1326 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1327 WB_END
1328
1329 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1330 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1331 WB_END
1332
1333 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1334 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1335 WB_END
1336
1337 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1338 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1339 WB_END
1340
1341 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1342 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1343 WB_END
1344
1345 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1346 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1347 WB_END
1348
1349 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1350 double result;
1351 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1352 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1353 return doubleBox(thread, env, result);
1354 }
1355 return nullptr;
1356 WB_END
1357
1358 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1359 ccstr ccstrResult;
1360 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1361 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1362 jstring result = env->NewStringUTF(ccstrResult);
1363 CHECK_JNI_EXCEPTION_(env, nullptr);
1364 return result;
1365 }
1366 return nullptr;
1367 WB_END
1368
1369 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1370 bool result = value == JNI_TRUE ? true : false;
1371 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1372 WB_END
1373
1374 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1375 int result = value;
1376 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1377 WB_END
1378
1379 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1380 uint result = value;
1381 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1382 WB_END
1383
1384 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1385 intx result = value;
1386 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1387 WB_END
1388
1389 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1390 uintx result = value;
1391 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1392 WB_END
1393
1394 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1395 uint64_t result = value;
1396 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1397 WB_END
1398
1399 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1400 size_t result = value;
1401 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1402 WB_END
1403
1404 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1405 double result = value;
1406 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1407 WB_END
1408
1409 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1410 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1411 const char* ccstrValue;
1412 if (value == nullptr) {
1413 ccstrValue = nullptr;
1414 }
1415 else {
1416 ccstrValue = env->GetStringUTFChars(value, nullptr);
1417 CHECK_JNI_EXCEPTION(env);
1418 }
1419 {
1420 ccstr param = ccstrValue;
1421 ThreadInVMfromNative ttvfn(thread); // back to VM
1422 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1423 assert(param == nullptr, "old value is freed automatically and not returned");
1424 }
1425 }
1426 if (value != nullptr) {
1427 env->ReleaseStringUTFChars(value, ccstrValue);
1428 }
1429 WB_END
1430
1431 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1432 WhiteBox::compilation_locked = true;
1433 WB_END
1434
1435 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1436 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1437 WhiteBox::compilation_locked = false;
1438 mo.notify_all();
1439 WB_END
1440
1441 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1442 ResourceMark rm(THREAD);
1443 int len;
1444 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1445 return (StringTable::lookup(name, len) != nullptr);
1446 WB_END
1447
1448 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1449 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1450 Universe::heap()->collect(GCCause::_wb_full_gc);
1451 #if INCLUDE_G1GC
1452 if (UseG1GC) {
1453 // Needs to be cleared explicitly for G1
1454 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1455 }
1456 #endif // INCLUDE_G1GC
1457 WB_END
1458
1459 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1460 Universe::heap()->collect(GCCause::_wb_young_gc);
1461 WB_END
1462
1463 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1464 // static+volatile in order to force the read to happen
1465 // (not be eliminated by the compiler)
1466 static char c;
1467 static volatile char* p;
1468
1469 p = os::reserve_memory(os::vm_allocation_granularity());
1470 if (p == nullptr) {
1471 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1472 }
1473
1474 c = *p;
1475 WB_END
1476
1477 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1478 const char* features = VM_Version::features_string();
1479 ThreadToNativeFromVM ttn(thread);
1480 jstring features_string = env->NewStringUTF(features);
1481
1482 CHECK_JNI_EXCEPTION_(env, nullptr);
1483
1484 return features_string;
1485 WB_END
1486
1487 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1488 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1489 return CodeCache::get_code_heap(code)->code_blob_type();
1490 }
1491
1492 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1493 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1494 return CodeCache::get_code_heap(blob_type);
1495 }
1496
1497 struct CodeBlobStub {
1498 CodeBlobStub(const CodeBlob* blob) :
1499 name(os::strdup(blob->name())),
1500 size(blob->size()),
1501 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1502 address((jlong) blob) { }
1503 ~CodeBlobStub() { os::free((void*) name); }
1504 const char* const name;
1505 const jint size;
1506 const jint blob_type;
1507 const jlong address;
1508 };
1509
1510 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1511 ResourceMark rm;
1512 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1513 CHECK_JNI_EXCEPTION_(env, nullptr);
1514 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1515
1516 jstring name = env->NewStringUTF(cb->name);
1517 CHECK_JNI_EXCEPTION_(env, nullptr);
1518 env->SetObjectArrayElement(result, 0, name);
1519
1520 jobject obj = integerBox(thread, env, cb->size);
1521 CHECK_JNI_EXCEPTION_(env, nullptr);
1522 env->SetObjectArrayElement(result, 1, obj);
1523
1524 obj = integerBox(thread, env, cb->blob_type);
1525 CHECK_JNI_EXCEPTION_(env, nullptr);
1526 env->SetObjectArrayElement(result, 2, obj);
1527
1528 obj = longBox(thread, env, cb->address);
1529 CHECK_JNI_EXCEPTION_(env, nullptr);
1530 env->SetObjectArrayElement(result, 3, obj);
1531
1532 return result;
1533 }
1534
1535 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1536 ResourceMark rm(THREAD);
1537 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1538 CHECK_JNI_EXCEPTION_(env, nullptr);
1539 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1540 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1541 jobjectArray result = nullptr;
1542 if (code == nullptr) {
1543 return result;
1544 }
1545 int comp_level = code->comp_level();
1546 int insts_size = code->insts_size();
1547
1548 ThreadToNativeFromVM ttn(thread);
1549 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1550 CHECK_JNI_EXCEPTION_(env, nullptr);
1551 result = env->NewObjectArray(5, clazz, nullptr);
1552 if (result == nullptr) {
1553 return result;
1554 }
1555
1556 CodeBlobStub stub(code);
1557 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1558 CHECK_JNI_EXCEPTION_(env, nullptr);
1559 env->SetObjectArrayElement(result, 0, codeBlob);
1560
1561 jobject level = integerBox(thread, env, comp_level);
1562 CHECK_JNI_EXCEPTION_(env, nullptr);
1563 env->SetObjectArrayElement(result, 1, level);
1564
1565 jbyteArray insts = env->NewByteArray(insts_size);
1566 CHECK_JNI_EXCEPTION_(env, nullptr);
1567 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1568 env->SetObjectArrayElement(result, 2, insts);
1569
1570 jobject id = integerBox(thread, env, code->compile_id());
1571 CHECK_JNI_EXCEPTION_(env, nullptr);
1572 env->SetObjectArrayElement(result, 3, id);
1573
1574 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1575 CHECK_JNI_EXCEPTION_(env, nullptr);
1576 env->SetObjectArrayElement(result, 4, entry_point);
1577
1578 return result;
1579 WB_END
1580
1581 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1582 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1583 BufferBlob* blob;
1584 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1585 if (full_size < size) {
1586 full_size += align_up(size - full_size, oopSize);
1587 }
1588 {
1589 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1590 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1591 if (blob != nullptr) {
1592 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1593 }
1594 }
1595 // Track memory usage statistic after releasing CodeCache_lock
1596 MemoryService::track_code_cache_memory_usage();
1597 return blob;
1598 }
1599
1600 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1601 if (size < 0) {
1602 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1603 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1604 }
1605 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1606 WB_END
1607
1608 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1609 if (addr == 0) {
1610 return;
1611 }
1612 BufferBlob::free((BufferBlob*) addr);
1613 WB_END
1614
1615 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1616 ResourceMark rm;
1617 GrowableArray<CodeBlobStub*> blobs;
1618 {
1619 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1620 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1621 if (heap == nullptr) {
1622 return nullptr;
1623 }
1624 for (CodeBlob* cb = (CodeBlob*) heap->first();
1625 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1626 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1627 new (stub) CodeBlobStub(cb);
1628 blobs.append(stub);
1629 }
1630 }
1631 ThreadToNativeFromVM ttn(thread);
1632 jobjectArray result = nullptr;
1633 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1634 CHECK_JNI_EXCEPTION_(env, nullptr);
1635 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1636 CHECK_JNI_EXCEPTION_(env, nullptr);
1637 if (result == nullptr) {
1638 return result;
1639 }
1640 int i = 0;
1641 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1642 it != blobs.end(); ++it) {
1643 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1644 CHECK_JNI_EXCEPTION_(env, nullptr);
1645 env->SetObjectArrayElement(result, i, obj);
1646 CHECK_JNI_EXCEPTION_(env, nullptr);
1647 ++i;
1648 }
1649 return result;
1650 WB_END
1651
1652 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1653 return CompileBroker::get_compilation_activity_mode();
1654 WB_END
1655
1656 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1657 if (addr == 0) {
1658 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1659 "WB_GetCodeBlob: addr is null");
1660 }
1661 ThreadToNativeFromVM ttn(thread);
1662 CodeBlobStub stub((CodeBlob*) addr);
1663 return codeBlob2objectArray(thread, env, &stub);
1664 WB_END
1665
1666 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1667 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1668 CHECK_JNI_EXCEPTION_(env, 0);
1669 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1670 return (jlong) mh->method_data();
1671 WB_END
1672
1673 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1674 return (jlong) thread->stack_size();
1675 WB_END
1676
1677 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1678 return (jlong) thread->stack_overflow_state()->stack_available(
1679 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1680 WB_END
1681
1682
1683 int WhiteBox::array_bytes_to_length(size_t bytes) {
1684 return Array<u1>::bytes_to_length(bytes);
1685 }
1686
1687 ///////////////
1688 // MetaspaceTestContext and MetaspaceTestArena
1689 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1690 metaspace::MetaspaceTestContext* context =
1691 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1692 return (jlong)p2i(context);
1693 WB_END
1694
1695 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1696 delete (metaspace::MetaspaceTestContext*) context;
1697 WB_END
1698
1699 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1700 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1701 context0->purge_area();
1702 WB_END
1703
1704 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1705 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1706 context0->print_on(tty);
1707 WB_END
1708
1709 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1710 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1711 return context0->committed_words();
1712 WB_END
1713
1714 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1715 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1716 return context0->used_words();
1717 WB_END
1718
1719 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1720 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1721 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1722 return (jlong)p2i(context0->create_arena(type));
1723 WB_END
1724
1725 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1726 delete (metaspace::MetaspaceTestArena*) arena;
1727 WB_END
1728
1729 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1730 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1731 MetaWord* p = arena0->allocate((size_t) word_size);
1732 return (jlong)p2i(p);
1733 WB_END
1734
1735 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1736 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1737 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1738 WB_END
1739
1740 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1741 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1742 WB_END
1743
1744 //////////////
1745
1746 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1747 if (size < 0) {
1748 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1749 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1750 }
1751
1752 oop class_loader_oop = JNIHandles::resolve(class_loader);
1753 ClassLoaderData* cld = class_loader_oop != nullptr
1754 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1755 : ClassLoaderData::the_null_class_loader_data();
1756
1757 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1758
1759 return (jlong)(uintptr_t)metadata;
1760 WB_END
1761
1762 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1763 jstring version, jstring location, jobjectArray packages))
1764 Handle h_module (THREAD, JNIHandles::resolve(module));
1765 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1766 WB_END
1767
1768 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1769 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1770 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1771 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1772 WB_END
1773
1774 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1775 Handle h_module (THREAD, JNIHandles::resolve(module));
1776 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1777 WB_END
1778
1779 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1780 Handle h_module (THREAD, JNIHandles::resolve(module));
1781 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1782 WB_END
1783
1784 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1785 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1786 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1787 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1788 WB_END
1789
1790 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1791 if (inc < 0) {
1792 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1793 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1794 }
1795
1796 jlong max_size_t = (jlong) ((size_t) -1);
1797 if (inc > max_size_t) {
1798 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1799 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1800 }
1801
1802 size_t new_cap_until_GC = 0;
1803 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1804 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1805 if (!success) {
1806 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1807 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1808 "due to contention with another thread");
1809 }
1810 return (jlong) new_cap_until_GC;
1811 WB_END
1812
1813 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1814 return (jlong) MetaspaceGC::capacity_until_GC();
1815 WB_END
1816
1817 // The function is only valid when CDS is available.
1818 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1819 #if INCLUDE_CDS
1820 return (jlong)MetaspaceShared::core_region_alignment();
1821 #else
1822 ShouldNotReachHere();
1823 return 0L;
1824 #endif
1825 WB_END
1826
1827 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1828 oop obj_oop = JNIHandles::resolve(obj);
1829 return (jboolean) obj_oop->mark().has_monitor();
1830 WB_END
1831
1832 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1833 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1834 return ObjectSynchronizer::request_deflate_idle_monitors();
1835 WB_END
1836
1837 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1838 VM_ForceSafepoint force_safepoint_op;
1839 VMThread::execute(&force_safepoint_op);
1840 WB_END
1841
1842 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1843 nullStream dev_null;
1844 ClassLoaderStatsVMOperation force_op(&dev_null);
1845 VMThread::execute(&force_op);
1846 WB_END
1847
1848 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1849 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1850 return (jlong) ik->constants();
1851 WB_END
1852
1853 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1854 return ConstantPool::CPCACHE_INDEX_TAG;
1855 WB_END
1856
1857 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1858 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1859 ConstantPool* cp = ik->constants();
1860 if (cp->cache() == nullptr) {
1861 return -1;
1862 }
1863 return cp->cache()->length();
1864 WB_END
1865
1866 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1867 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1868 ConstantPool* cp = ik->constants();
1869 if (cp->cache() == nullptr) {
1870 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1871 }
1872 jint cpci = index;
1873 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1874 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1875 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1876 }
1877 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1878 return cpi;
1879 WB_END
1880
1881 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1882 return ConstantPool::encode_invokedynamic_index(index);
1883 WB_END
1884
1885 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
1886 oop aoop = JNIHandles::resolve(thing);
1887 if (!aoop->is_instance()) {
1888 return nullptr;
1889 }
1890 instanceHandle ih(THREAD, (instanceOop) aoop);
1891 InstanceKlass* klass = InstanceKlass::cast(ih->klass());
1892 if (klass->nonstatic_oop_map_count() == 0) {
1893 return nullptr;
1894 }
1895 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
1896 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
1897 int oop_count = 0;
1898 while (map < end) {
1899 oop_count += map->count();
1900 map++;
1901 }
1902
1903 objArrayHandle result_array =
1904 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL);
1905 map = klass->start_of_nonstatic_oop_maps();
1906 int index = 0;
1907 while (map < end) {
1908 int offset = map->offset();
1909 for (unsigned int j = 0; j < map->count(); j++) {
1910 result_array->obj_at_put(index++, ih->obj_field(offset));
1911 offset += heapOopSize;
1912 }
1913 map++;
1914 }
1915 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1916 WB_END
1917
1918 class CollectOops : public BasicOopIterateClosure {
1919 public:
1920 GrowableArray<Handle>* array;
1921
1922 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
1923 objArrayHandle result_array =
1924 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL);
1925 for (int i = 0 ; i < array->length(); i++) {
1926 result_array->obj_at_put(i, array->at(i)());
1927 }
1928 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1929 }
1930
1931 void add_oop(oop o) {
1932 Handle oh = Handle(Thread::current(), o);
1933 // Value might be oop, but JLS can't see as Object, just iterate through it...
1934 if (oh != nullptr && oh->is_inline_type()) {
1935 oh->oop_iterate(this);
1936 } else {
1937 array->append(oh);
1938 }
1939 }
1940
1941 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); }
1942 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); }
1943 };
1944
1945
1946 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
1947 ResourceMark rm(thread);
1948 Handle objh(thread, JNIHandles::resolve(thing));
1949 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1950 CollectOops collectOops;
1951 collectOops.array = array;
1952 objh->oop_iterate(&collectOops);
1953 return collectOops.create_jni_result(env, THREAD);
1954 WB_END
1955
1956 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
1957 ResourceMark rm(THREAD);
1958 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1959 CollectOops collectOops;
1960 collectOops.array = array;
1961 StackFrameStream sfs(thread, false /* update */, true /* process_frames */);
1962 while (depth > 0) { // Skip the native WB API frame
1963 sfs.next();
1964 frame* f = sfs.current();
1965 f->oops_do(&collectOops, nullptr, sfs.register_map());
1966 depth--;
1967 }
1968 return collectOops.create_jni_result(env, THREAD);
1969 WB_END
1970
1971
1972 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1973 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1974 ConstantPool* cp = ik->constants();
1975 if (cp->cache() == nullptr) {
1976 return -1;
1977 }
1978 return cp->resolved_indy_entries_length();
1979 WB_END
1980
1981 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1982 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1983 ConstantPool* cp = ik->constants();
1984 if (cp->cache() == nullptr) {
1985 return -1;
1986 }
1987 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1988 WB_END
1989
1990 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1991 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1992 VMThread::execute(&clear_ics);
1993 WB_END
1994
1995 template <typename T>
1996 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1997 assert(value != nullptr, "sanity");
1998 if (method == nullptr || name == nullptr) {
1999 return false;
2000 }
2001 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2002 CHECK_JNI_EXCEPTION_(env, false);
2003 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2004 // can't be in VM when we call JNI
2005 ThreadToNativeFromVM ttnfv(thread);
2006 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2007 CHECK_JNI_EXCEPTION_(env, false);
2008 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
2009 env->ReleaseStringUTFChars(name, flag_name);
2010 if (option == CompileCommand::Unknown) {
2011 return false;
2012 }
2013 if (!CompilerOracle::option_matches_type(option, *value)) {
2014 return false;
2015 }
2016 return CompilerOracle::has_option_value(mh, option, *value);
2017 }
2018
2019 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2020 bool result;
2021 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2022 // can't be in VM when we call JNI
2023 ThreadToNativeFromVM ttnfv(thread);
2024 return booleanBox(thread, env, result);
2025 }
2026 return nullptr;
2027 WB_END
2028
2029 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2030 intx result;
2031 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2032 // can't be in VM when we call JNI
2033 ThreadToNativeFromVM ttnfv(thread);
2034 return longBox(thread, env, result);
2035 }
2036 return nullptr;
2037 WB_END
2038
2039 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2040 uintx result;
2041 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2042 // can't be in VM when we call JNI
2043 ThreadToNativeFromVM ttnfv(thread);
2044 return longBox(thread, env, result);
2045 }
2046 return nullptr;
2047 WB_END
2048
2049 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2050 double result;
2051 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2052 // can't be in VM when we call JNI
2053 ThreadToNativeFromVM ttnfv(thread);
2054 return doubleBox(thread, env, result);
2055 }
2056 return nullptr;
2057 WB_END
2058
2059 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2060 ccstr ccstrResult;
2061 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2062 // can't be in VM when we call JNI
2063 ThreadToNativeFromVM ttnfv(thread);
2064 jstring result = env->NewStringUTF(ccstrResult);
2065 CHECK_JNI_EXCEPTION_(env, nullptr);
2066 return result;
2067 }
2068 return nullptr;
2069 WB_END
2070
2071 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2072 const char* p = Arguments::get_default_shared_archive_path();
2073 ThreadToNativeFromVM ttn(thread);
2074 jstring path_string = env->NewStringUTF(p);
2075
2076 CHECK_JNI_EXCEPTION_(env, nullptr);
2077
2078 return path_string;
2079 WB_END
2080
2081 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2082 return UseSharedSpaces;
2083 WB_END
2084
2085 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2086 #if INCLUDE_CDS
2087 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2088 #else
2089 ShouldNotReachHere();
2090 return (jint)-1;
2091 #endif
2092 WB_END
2093
2094 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2095 #if INCLUDE_CDS
2096 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2097 #else
2098 ShouldNotReachHere();
2099 return (jint)-1;
2100 #endif
2101 WB_END
2102
2103 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2104 return FileMapInfo::memory_mapping_failed();
2105 WB_END
2106
2107 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2108 ResourceMark rm(THREAD);
2109 oop str_oop = JNIHandles::resolve(str);
2110 int length;
2111 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2112 return StringTable::lookup_shared(chars, length) == str_oop;
2113 WB_END
2114
2115 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2116 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2117 WB_END
2118
2119 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2120 return ArchiveHeapLoader::is_mapped();
2121 WB_END
2122
2123 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2124 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2125 if (!k->is_instance_klass()) {
2126 return;
2127 }
2128 InstanceKlass *ik = InstanceKlass::cast(k);
2129 ik->link_class(THREAD); // may throw verification error
2130 WB_END
2131
2132 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2133 return ArchiveHeapLoader::is_mapped();
2134 WB_END
2135
2136 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2137 #if INCLUDE_CDS
2138 return true;
2139 #else
2140 return false;
2141 #endif // INCLUDE_CDS
2142 WB_END
2143
2144 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2145 #if COMPILER2_OR_JVMCI
2146 return true;
2147 #else
2148 return false;
2149 #endif
2150 WB_END
2151
2152 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2153 #if INCLUDE_JVMCI
2154 return JVMCIGlobals::gc_supports_jvmci();
2155 #else
2156 return false;
2157 #endif
2158 WB_END
2159
2160 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2161 return HeapShared::can_write();
2162 WB_END
2163
2164
2165 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2166 #if INCLUDE_JFR
2167 return true;
2168 #else
2169 return false;
2170 #endif // INCLUDE_JFR
2171 WB_END
2172
2173 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2174 #if defined(DTRACE_ENABLED)
2175 return true;
2176 #else
2177 return false;
2178 #endif // DTRACE_ENABLED
2179 WB_END
2180
2181 #if INCLUDE_CDS
2182
2183 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2184 ResourceMark rm;
2185 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2186 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2187 return result;
2188 WB_END
2189
2190 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2191 ResourceMark rm;
2192 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2193 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2194 return result;
2195 WB_END
2196
2197 #endif // INCLUDE_CDS
2198
2199 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2200 class ReadMonitorsClosure : public HandshakeClosure {
2201 jboolean _executed;
2202
2203 void do_thread(Thread* th) {
2204 JavaThread* jt = JavaThread::cast(th);
2205 ResourceMark rm;
2206
2207 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2208
2209 if (!jt->has_last_Java_frame()) {
2210 return;
2211 }
2212 RegisterMap rmap(jt,
2213 RegisterMap::UpdateMap::include,
2214 RegisterMap::ProcessFrames::include,
2215 RegisterMap::WalkContinuation::skip);
2216 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2217 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2218 if (monitors != nullptr) {
2219 int len = monitors->length();
2220 // Walk monitors youngest to oldest
2221 for (int i = len - 1; i >= 0; i--) {
2222 MonitorInfo* mon_info = monitors->at(i);
2223 if (mon_info->eliminated()) continue;
2224 oop owner = mon_info->owner();
2225 if (owner != nullptr) {
2226 info->append(mon_info);
2227 }
2228 }
2229 }
2230 }
2231 _executed = true;
2232 }
2233
2234 public:
2235 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2236 jboolean executed() const { return _executed; }
2237 };
2238
2239 ReadMonitorsClosure rmc;
2240 if (thread_handle != nullptr) {
2241 ThreadsListHandle tlh;
2242 JavaThread* target = nullptr;
2243 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2244 if (is_alive) {
2245 Handshake::execute(&rmc, &tlh, target);
2246 }
2247 }
2248 return rmc.executed();
2249 WB_END
2250
2251 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2252 class TraceSelfClosure : public HandshakeClosure {
2253 jint _num_threads_completed;
2254
2255 void do_thread(Thread* th) {
2256 JavaThread* jt = JavaThread::cast(th);
2257 ResourceMark rm;
2258
2259 jt->print_on(tty);
2260 jt->print_stack_on(tty);
2261 tty->cr();
2262 Atomic::inc(&_num_threads_completed);
2263 }
2264
2265 public:
2266 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2267
2268 jint num_threads_completed() const { return _num_threads_completed; }
2269 };
2270 TraceSelfClosure tsc(Thread::current());
2271
2272 if (all_threads) {
2273 Handshake::execute(&tsc);
2274 } else 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 Handshake::execute(&tsc, &tlh, target);
2280 }
2281 }
2282 return tsc.num_threads_completed();
2283 WB_END
2284
2285 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2286 class TraceSelfClosure : public AsyncHandshakeClosure {
2287 JavaThread* _self;
2288 void do_thread(Thread* th) {
2289 assert(th->is_Java_thread(), "sanity");
2290 // AsynchHandshake handshakes are only executed by target.
2291 assert(_self == th, "Must be");
2292 assert(Thread::current() == th, "Must be");
2293 JavaThread* jt = JavaThread::cast(th);
2294 ResourceMark rm;
2295 jt->print_on(tty);
2296 jt->print_stack_on(tty);
2297 tty->cr();
2298 }
2299
2300 public:
2301 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2302 };
2303 if (thread_handle != nullptr) {
2304 ThreadsListHandle tlh;
2305 JavaThread* target = nullptr;
2306 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2307 if (is_alive) {
2308 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2309 Handshake::execute(tsc, target);
2310 }
2311 }
2312 WB_END
2313
2314 static volatile int _emulated_lock = 0;
2315
2316 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2317 JavaThread* self = JavaThread::current();
2318
2319 {
2320 // Before trying to acquire the lock transition into a safepoint safe state.
2321 // Otherwise if either suspender or suspendee blocks for a safepoint
2322 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2323 // the lock without allowing the safepoint to progress.
2324 ThreadBlockInVM tbivm(self);
2325
2326 // We will deadlock here if we are 'suspender' and 'suspendee'
2327 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2328 // at the right place.
2329 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2330 assert(_emulated_lock == 1, "Must be locked");
2331
2332 // Sleep much longer in suspendee to force situation where
2333 // 'suspender' is waiting above to acquire lock.
2334 os::naked_short_sleep(suspender ? 1 : 10);
2335 }
2336 Atomic::store(&_emulated_lock, 0);
2337 WB_END
2338
2339 // Some convenience methods to deal with objects from java
2340 int WhiteBox::offset_for_field(const char* field_name, oop object,
2341 Symbol* signature_symbol) {
2342 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2343
2344 //Get the class of our object
2345 Klass* arg_klass = object->klass();
2346 //Turn it into an instance-klass
2347 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2348
2349 //Create symbols to look for in the class
2350 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2351
2352 //To be filled in with an offset of the field we're looking for
2353 fieldDescriptor fd;
2354
2355 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2356 if (res == nullptr) {
2357 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2358 name_symbol->as_C_string());
2359 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2360 }
2361
2362 //fetch the field at the offset we've found
2363 int dest_offset = fd.offset();
2364
2365 return dest_offset;
2366 }
2367
2368
2369 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2370 int offset = offset_for_field(field_name, object,
2371 vmSymbols::string_signature());
2372 oop string = object->obj_field(offset);
2373 if (string == nullptr) {
2374 return nullptr;
2375 }
2376 const char* ret = java_lang_String::as_utf8_string(string);
2377 return ret;
2378 }
2379
2380 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2381 int offset =
2382 offset_for_field(field_name, object, vmSymbols::bool_signature());
2383 bool ret = (object->bool_field(offset) == JNI_TRUE);
2384 return ret;
2385 }
2386
2387 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2388 ResourceMark rm;
2389 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2390 const char* klass_name = klass->external_name();
2391
2392 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2393
2394 // one by one registration natives for exception catching
2395 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2396 CHECK_JNI_EXCEPTION(env);
2397 for (int i = 0, n = method_count; i < n; ++i) {
2398 // Skip dummy entries
2399 if (method_array[i].fnPtr == nullptr) continue;
2400 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2401 jthrowable throwable_obj = env->ExceptionOccurred();
2402 if (throwable_obj != nullptr) {
2403 env->ExceptionClear();
2404 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2405 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2406 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2407 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2408 klass_name, method_array[i].name, method_array[i].signature);
2409 }
2410 } else {
2411 // Registration failed unexpectedly.
2412 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2413 klass_name, method_array[i].name, method_array[i].signature);
2414 env->UnregisterNatives(wbclass);
2415 break;
2416 }
2417 }
2418 }
2419 }
2420
2421 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2422 // can't be in VM when we call JNI
2423 ThreadToNativeFromVM ttnfv(thread);
2424 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2425 CHECK_JNI_EXCEPTION_(env, 0);
2426 int ret;
2427 {
2428 ThreadInVMfromNative ttvfn(thread); // back to VM
2429 ret = DirectivesParser::parse_string(dir, tty);
2430 }
2431 env->ReleaseStringUTFChars(compDirect, dir);
2432 // -1 for error parsing directive. Return 0 as number of directives added.
2433 if (ret == -1) {
2434 ret = 0;
2435 }
2436 return (jint) ret;
2437 WB_END
2438
2439 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2440 DirectivesStack::pop(count);
2441 WB_END
2442
2443 // Checks that the library libfile has the noexecstack bit set.
2444 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2445 jboolean ret = false;
2446 #ifdef LINUX
2447 // Can't be in VM when we call JNI.
2448 ThreadToNativeFromVM ttnfv(thread);
2449 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2450 CHECK_JNI_EXCEPTION_(env, 0);
2451 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2452 env->ReleaseStringUTFChars(libfile, lf);
2453 #endif
2454 return ret;
2455 WB_END
2456
2457 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2458 LINUX_ONLY(return OSContainer::is_containerized();)
2459 return false;
2460 WB_END
2461
2462 // Physical memory of the host machine (including containers)
2463 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2464 LINUX_ONLY(return os::Linux::physical_memory();)
2465 return os::physical_memory();
2466 WB_END
2467
2468 // Physical swap of the host machine (including containers), Linux only.
2469 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2470 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2471 return -1; // Not used/implemented on other platforms
2472 WB_END
2473
2474 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2475 jobject o,
2476 jstring proc_cgroups,
2477 jstring proc_self_cgroup,
2478 jstring proc_self_mountinfo))
2479 jint ret = 0;
2480 #ifdef LINUX
2481 ThreadToNativeFromVM ttnfv(thread);
2482 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2483 CHECK_JNI_EXCEPTION_(env, 0);
2484 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2485 CHECK_JNI_EXCEPTION_(env, 0);
2486 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2487 CHECK_JNI_EXCEPTION_(env, 0);
2488 u1 cg_type_flags = 0;
2489 // This sets cg_type_flags
2490 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2491 ret = (jint)cg_type_flags;
2492 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2493 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2494 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2495 #endif
2496 return ret;
2497 WB_END
2498
2499 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2500 os::print_os_info(tty);
2501 WB_END
2502
2503 // Elf decoder
2504 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2505 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2506 ElfFile::_do_not_cache_elf_section = true;
2507 #endif
2508 WB_END
2509
2510 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2511 return (jlong) ResolvedMethodTable::items_count();
2512 WB_END
2513
2514 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2515 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2516 WB_END
2517
2518 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2519 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2520 // Return size in bytes.
2521 return k->size() * wordSize;
2522 WB_END
2523
2524 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2525 // It explains how the thread's priority field is used for test state coordination.
2526 //
2527 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2528 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2529 jlong tid = java_lang_Thread::thread_id(target_oop);
2530 JavaThread* target = java_lang_Thread::thread(target_oop);
2531
2532 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2533 ThreadsListHandle tlh;
2534
2535 // Look up the target thread by tid to ensure it is present
2536 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2537 if (t == nullptr) {
2538 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2539 }
2540
2541 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2542 // Allow target to terminate by boosting priority
2543 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2544
2545 // Now wait for the target to terminate
2546 while (!target->is_terminated()) {
2547 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2548 os::naked_short_sleep(0);
2549 }
2550
2551 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2552
2553 // Now release the GC inducing thread - we have to re-resolve the external oop that
2554 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2555 oop original = JNIHandles::resolve_non_null(target_handle);
2556 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2557
2558 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2559
2560 // The Java code should be creating garbage and triggering GC, which would potentially move
2561 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2562 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2563 // kick in.
2564 for (int i = 0; i < 5; i++) {
2565 oop original = JNIHandles::resolve_non_null(target_handle);
2566 oop current = t->threadObj();
2567 if (original != current) {
2568 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2569 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2570 } else {
2571 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2572 ThreadBlockInVM tbivm(thread);
2573 os::naked_short_sleep(50);
2574 }
2575 }
2576 WB_END
2577
2578 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2579 ResourceMark rm; // for verify
2580 stringStream st;
2581 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2582 frame* current_frame = fst.current();
2583 if (log) {
2584 current_frame->print_value_on(&st, nullptr);
2585 }
2586 current_frame->verify(fst.register_map());
2587 }
2588 if (log) {
2589 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2590 tty->print_raw(st.freeze());
2591 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2592 }
2593 WB_END
2594
2595 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2596 #if INCLUDE_JVMTI
2597 return JNI_TRUE;
2598 #else
2599 return JNI_FALSE;
2600 #endif
2601 WB_END
2602
2603 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2604 os::naked_short_sleep(time);
2605 WB_END
2606
2607 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2608 ThreadToNativeFromVM ttn(thread);
2609 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2610 CHECK_JNI_EXCEPTION_(env, nullptr);
2611 return info_string;
2612 WB_END
2613
2614 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2615 GCLocker::lock_critical(thread);
2616 WB_END
2617
2618 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2619 GCLocker::unlock_critical(thread);
2620 WB_END
2621
2622 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2623 if (!Continuations::enabled()) {
2624 tty->print_cr("WB error: must be Continuations::enabled()!");
2625 return JNI_FALSE;
2626 }
2627 jboolean result = false;
2628 #if INCLUDE_JVMTI
2629 if (enable) {
2630 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2631 } else {
2632 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2633 }
2634 #endif
2635 return result;
2636 WB_END
2637
2638 #define CC (char*)
2639
2640 static JNINativeMethod methods[] = {
2641 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2642 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2643 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2644 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2645 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2646 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2647 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2648 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2649 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2650 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2651 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2652 {CC"parseCommandLine0",
2653 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2654 (void*) &WB_ParseCommandLine
2655 },
2656 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2657 (void*)&WB_AddToBootstrapClassLoaderSearch},
2658 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2659 (void*)&WB_AddToSystemClassLoaderSearch},
2660 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2661 (void*)&WB_GetCompressedOopsMaxHeapSize},
2662 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2663 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2664 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2665 #if INCLUDE_CDS
2666 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2667 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2668 #endif
2669 #if INCLUDE_G1GC
2670 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2671 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2672 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2673 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2674 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2675 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2676 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2677 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2678 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2679 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2680 (void*)&WB_G1AuxiliaryMemoryUsage },
2681 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2682 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2683 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2684 #endif // INCLUDE_G1GC
2685 #if INCLUDE_PARALLELGC
2686 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2687 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2688 #endif
2689 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2690 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2691 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2692 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2693 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2694 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2695 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2696 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2697 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2698 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2699 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2700 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2701 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2702 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2703 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2704 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2705 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2706 (void*)&WB_DeoptimizeMethod },
2707 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2708 (void*)&WB_IsMethodCompiled },
2709 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2710 (void*)&WB_IsMethodCompilable},
2711 {CC"isMethodQueuedForCompilation0",
2712 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2713 {CC"isIntrinsicAvailable0",
2714 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2715 (void*)&WB_IsIntrinsicAvailable},
2716 {CC"makeMethodNotCompilable0",
2717 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2718 {CC"testSetDontInlineMethod0",
2719 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2720 {CC"getMethodCompilationLevel0",
2721 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2722 {CC"getMethodDecompileCount0",
2723 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2724 {CC"getMethodTrapCount0",
2725 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2726 (void*)&WB_GetMethodTrapCount},
2727 {CC"getDeoptCount0",
2728 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2729 {CC"getMethodEntryBci0",
2730 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2731 {CC"getCompileQueueSize",
2732 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2733 {CC"testSetForceInlineMethod0",
2734 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2735 {CC"enqueueMethodForCompilation0",
2736 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2737 {CC"enqueueInitializerForCompilation0",
2738 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2739 {CC"markMethodProfiled",
2740 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2741 {CC"clearMethodState0",
2742 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2743 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2744 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2745 {CC"matchesMethod",
2746 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2747 (void*)&WB_MatchesMethod},
2748 {CC"matchesInline",
2749 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2750 (void*)&WB_MatchesInline},
2751 {CC"shouldPrintAssembly",
2752 CC"(Ljava/lang/reflect/Executable;I)Z",
2753 (void*)&WB_ShouldPrintAssembly},
2754
2755 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2756 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2757 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2758 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2759 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2760 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2761 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2762 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2763 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2764 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2765 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2766 (void*)&WB_SetStringVMFlag},
2767 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2768 (void*)&WB_GetBooleanVMFlag},
2769 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2770 (void*)&WB_GetIntVMFlag},
2771 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2772 (void*)&WB_GetUintVMFlag},
2773 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2774 (void*)&WB_GetIntxVMFlag},
2775 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2776 (void*)&WB_GetUintxVMFlag},
2777 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2778 (void*)&WB_GetUint64VMFlag},
2779 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2780 (void*)&WB_GetSizeTVMFlag},
2781 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2782 (void*)&WB_GetDoubleVMFlag},
2783 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2784 (void*)&WB_GetStringVMFlag},
2785 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2786 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2787 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2788 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2789 {CC"allocateMetaspace",
2790 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2791 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2792 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2793 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2794 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2795 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2796 (void*)&WB_GetNMethod },
2797 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2798 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2799 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2800 {CC"getCompilationActivityMode",
2801 CC"()I", (void*)&WB_GetCompilationActivityMode},
2802 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2803 (void*)&WB_GetMethodData },
2804 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2805 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2806 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2807 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2808 (void*)&WB_DefineModule },
2809 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2810 (void*)&WB_AddModuleExports },
2811 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2812 (void*)&WB_AddReadsModule },
2813 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2814 (void*)&WB_AddModuleExportsToAllUnnamed },
2815 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2816 (void*)&WB_AddModuleExportsToAll },
2817 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2818 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2819 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2820 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2821 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2822 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2823 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2824 {CC"remapInstructionOperandFromCPCache0",
2825 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2826 {CC"encodeConstantPoolIndyIndex0",
2827 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2828 {CC"getObjectsViaKlassOopMaps0",
2829 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
2830 {CC"getObjectsViaOopIterator0",
2831 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
2832 {CC"getObjectsViaFrameOopIterator",
2833 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
2834 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2835 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2836 {CC"getMethodBooleanOption",
2837 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2838 (void*)&WB_GetMethodBooleaneOption},
2839 {CC"getMethodIntxOption",
2840 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2841 (void*)&WB_GetMethodIntxOption},
2842 {CC"getMethodUintxOption",
2843 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2844 (void*)&WB_GetMethodUintxOption},
2845 {CC"getMethodDoubleOption",
2846 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2847 (void*)&WB_GetMethodDoubleOption},
2848 {CC"getMethodStringOption",
2849 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2850 (void*)&WB_GetMethodStringOption},
2851 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2852 (void*)&WB_GetDefaultArchivePath},
2853 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2854 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2855 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2856 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2857 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2858 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2859 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2860 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2861 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2862 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2863 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2864 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2865 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2866 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2867 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2868
2869 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2870 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2871 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2872 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2873 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2874 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2875 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2876 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2877 (void*)&WB_AddCompilerDirective },
2878 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2879 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2880 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2881 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2882 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2883 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2884 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2885 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2886 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2887 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2888 (void*)&WB_ConcurrentGCRunTo},
2889 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2890 (void*)&WB_CheckLibSpecifiesNoexecstack},
2891 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2892 {CC"validateCgroup",
2893 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2894 (void*)&WB_ValidateCgroup },
2895 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2896 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2897 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2898 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2899 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2900 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2901 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2902
2903 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2904 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2905 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2906 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2907 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2908 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2909 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2910 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2911 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2912 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2913 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2914
2915 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2916 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2917 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2918
2919 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2920 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2921 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2922 };
2923
2924
2925 #undef CC
2926
2927 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2928 {
2929 if (WhiteBoxAPI) {
2930 // Make sure that wbclass is loaded by the null classloader
2931 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2932 Handle loader(THREAD, ik->class_loader());
2933 if (loader.is_null()) {
2934 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2935 WhiteBox::set_used();
2936 }
2937 }
2938 }
2939 JVM_END