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/metaspace/testHelpers.hpp"
55 #include "memory/metaspaceUtils.hpp"
56 #include "memory/oopFactory.hpp"
57 #include "memory/resourceArea.hpp"
58 #include "memory/universe.hpp"
59 #include "oops/array.hpp"
60 #include "oops/compressedOops.hpp"
61 #include "oops/constantPool.inline.hpp"
62 #include "oops/klass.inline.hpp"
63 #include "oops/method.inline.hpp"
64 #include "oops/objArrayKlass.hpp"
65 #include "oops/objArrayOop.inline.hpp"
66 #include "oops/oop.inline.hpp"
67 #include "oops/typeArrayOop.inline.hpp"
68 #include "prims/jvmtiEnvBase.hpp"
69 #include "prims/resolvedMethodTable.hpp"
70 #include "prims/wbtestmethods/parserTests.hpp"
71 #include "prims/whitebox.inline.hpp"
72 #include "runtime/arguments.hpp"
73 #include "runtime/atomic.hpp"
74 #include "runtime/deoptimization.hpp"
75 #include "runtime/fieldDescriptor.inline.hpp"
76 #include "runtime/flags/jvmFlag.hpp"
77 #include "runtime/flags/jvmFlagAccess.hpp"
78 #include "runtime/frame.inline.hpp"
79 #include "runtime/handles.inline.hpp"
80 #include "runtime/handshake.hpp"
81 #include "runtime/interfaceSupport.inline.hpp"
82 #include "runtime/javaCalls.hpp"
83 #include "runtime/javaThread.inline.hpp"
84 #include "runtime/jniHandles.inline.hpp"
85 #include "runtime/os.hpp"
86 #include "runtime/stackFrameStream.inline.hpp"
87 #include "runtime/synchronizer.hpp"
88 #include "runtime/threadSMR.hpp"
89 #include "runtime/vframe.hpp"
90 #include "runtime/vm_version.hpp"
91 #include "services/mallocSiteTable.hpp"
92 #include "services/memoryService.hpp"
93 #include "services/memTracker.hpp"
94 #include "utilities/align.hpp"
95 #include "utilities/debug.hpp"
96 #include "utilities/elfFile.hpp"
97 #include "utilities/exceptions.hpp"
98 #include "utilities/macros.hpp"
99 #include "utilities/nativeCallStack.hpp"
100 #include "utilities/ostream.hpp"
101 #if INCLUDE_G1GC
102 #include "gc/g1/g1Arguments.hpp"
103 #include "gc/g1/g1CollectedHeap.inline.hpp"
104 #include "gc/g1/g1ConcurrentMark.hpp"
105 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
106 #include "gc/g1/heapRegionManager.hpp"
107 #include "gc/g1/heapRegionRemSet.inline.hpp"
108 #endif // INCLUDE_G1GC
109 #if INCLUDE_PARALLELGC
110 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
111 #endif // INCLUDE_PARALLELGC
112 #if INCLUDE_ZGC
113 #include "gc/z/zAddress.inline.hpp"
114 #endif // INCLUDE_ZGC
115 #if INCLUDE_JVMCI
116 #include "jvmci/jvmciEnv.hpp"
117 #include "jvmci/jvmciRuntime.hpp"
118 #endif
119 #ifdef LINUX
120 #include "os_linux.hpp"
121 #include "osContainer_linux.hpp"
122 #include "cgroupSubsystem_linux.hpp"
123 #endif
124
125 #define CHECK_JNI_EXCEPTION_(env, value) \
126 do { \
127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
128 THREAD->clear_pending_jni_exception_check(); \
129 if (HAS_PENDING_EXCEPTION) { \
130 return(value); \
131 } \
132 } while (0)
133
134 #define CHECK_JNI_EXCEPTION(env) \
135 do { \
136 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
137 THREAD->clear_pending_jni_exception_check(); \
138 if (HAS_PENDING_EXCEPTION) { \
139 return; \
140 } \
141 } while (0)
142
143 bool WhiteBox::_used = false;
144 volatile bool WhiteBox::compilation_locked = false;
145
146 class VM_WhiteBoxOperation : public VM_Operation {
147 public:
148 VM_WhiteBoxOperation() { }
149 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
150 bool allow_nested_vm_operations() const { return true; }
151 };
152
153
154 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
155 return (jlong)(void*)JNIHandles::resolve(obj);
156 WB_END
157
158 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
159 return heapOopSize;
160 WB_END
161
162 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
163 return (jint)os::vm_page_size();
164 WB_END
165
166 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
167 return os::vm_allocation_granularity();
168 WB_END
169
170 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
171 return os::large_page_size();
172 WB_END
173
174 class WBIsKlassAliveClosure : public LockedClassesDo {
175 Symbol* _name;
176 int _count;
177 public:
178 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
179
180 void do_klass(Klass* k) {
181 Symbol* ksym = k->name();
182 if (ksym->fast_compare(_name) == 0) {
183 _count++;
184 } else if (k->is_instance_klass()) {
185 // Need special handling for hidden classes because the JVM
186 // appends "+<hex-address>" to hidden class names.
187 InstanceKlass *ik = InstanceKlass::cast(k);
188 if (ik->is_hidden()) {
189 ResourceMark rm;
190 char* k_name = ksym->as_C_string();
191 // Find the first '+' char and truncate the string at that point.
192 // NOTE: This will not work correctly if the original hidden class
193 // name contains a '+'.
194 char* plus_char = strchr(k_name, '+');
195 if (plus_char != nullptr) {
196 *plus_char = 0;
197 char* c_name = _name->as_C_string();
198 if (strcmp(c_name, k_name) == 0) {
199 _count++;
200 }
201 }
202 }
203 }
204 }
205
206 int count() const {
207 return _count;
208 }
209 };
210
211 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
212 oop h_name = JNIHandles::resolve(name);
213 if (h_name == nullptr) {
214 return 0;
215 }
216 Symbol* sym = java_lang_String::as_symbol(h_name);
217 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
218
219 WBIsKlassAliveClosure closure(sym);
220 ClassLoaderDataGraph::classes_do(&closure);
221
222 // Return the count of alive classes with this name.
223 return closure.count();
224 WB_END
225
226 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
227 oop h_name = JNIHandles::resolve(name);
228 if (h_name == nullptr) {
229 return 0;
230 }
231 Symbol* sym = java_lang_String::as_symbol(h_name);
232 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
233 return (jint)sym->refcount();
234 WB_END
235
236
237 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
238 #if INCLUDE_JVMTI
239 ResourceMark rm;
240 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
241 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
242 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
243 assert(err == JVMTI_ERROR_NONE, "must not fail");
244 #endif
245 }
246 WB_END
247
248 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
249 #if INCLUDE_JVMTI
250 ResourceMark rm;
251 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
252 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
253 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
254 assert(err == JVMTI_ERROR_NONE, "must not fail");
255 #endif
256 }
257 WB_END
258
259
260 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
261 return (jlong)Arguments::max_heap_for_compressed_oops();
262 }
263 WB_END
264
265 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
266 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
267 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
268 MinHeapSize,
269 InitialHeapSize,
270 MaxHeapSize,
271 SpaceAlignment,
272 HeapAlignment);
273 }
274 WB_END
275
276 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
277 size_t granularity = os::vm_allocation_granularity();
278 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
279 VirtualSpace vs;
280 vs.initialize(rhs, 50 * granularity);
281
282 // Check if constraints are complied
283 if (!( UseCompressedOops && rhs.base() != nullptr &&
284 CompressedOops::base() != nullptr &&
285 CompressedOops::use_implicit_null_checks() )) {
286 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
287 "\tUseCompressedOops is %d\n"
288 "\trhs.base() is " PTR_FORMAT "\n"
289 "\tCompressedOops::base() is " PTR_FORMAT "\n"
290 "\tCompressedOops::use_implicit_null_checks() is %d",
291 UseCompressedOops,
292 p2i(rhs.base()),
293 p2i(CompressedOops::base()),
294 CompressedOops::use_implicit_null_checks());
295 return;
296 }
297 tty->print_cr("Reading from no access area... ");
298 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
299 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
300 WB_END
301
302 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
303 size_t magnitude, size_t iterations) {
304 size_t granularity = os::vm_allocation_granularity();
305 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
306 VirtualSpace vs;
307 if (!vs.initialize(rhs, 0)) {
308 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
309 return 3;
310 }
311
312 int seed = os::random();
313 tty->print_cr("Random seed is %d", seed);
314
315 for (size_t i = 0; i < iterations; i++) {
316
317 // Whether we will shrink or grow
318 bool shrink = os::random() % 2L == 0;
319
320 // Get random delta to resize virtual space
321 size_t delta = (size_t)os::random() % magnitude;
322
323 // If we are about to shrink virtual space below zero, then expand instead
324 if (shrink && vs.committed_size() < delta) {
325 shrink = false;
326 }
327
328 // Resizing by delta
329 if (shrink) {
330 vs.shrink_by(delta);
331 } else {
332 // If expanding fails expand_by will silently return false
333 vs.expand_by(delta, true);
334 }
335 }
336 return 0;
337 }
338
339 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
340 jlong reserved_space_size, jlong magnitude, jlong iterations))
341 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
342 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
343 iterations);
344 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
345 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
346 return 1;
347 }
348
349 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
350 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
351 if (sizeof(size_t) < sizeof(jlong)) {
352 jlong size_t_max_value = (jlong)SIZE_MAX;
353 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
354 || iterations > size_t_max_value) {
355 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
356 return 2;
357 }
358 }
359
360 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
361 (size_t) magnitude, (size_t) iterations);
362 WB_END
363
364 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
365 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
366 WB_END
367
368 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
369 #if INCLUDE_JVMCI
370 if (EnableJVMCI) {
371 // Enter the JVMCI env that will be used by the CompileBroker.
372 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
373 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
374 }
375 #endif
376 return false;
377 WB_END
378
379 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
380 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
381 WB_END
382
383 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
384 return GCConfig::is_gc_selected_ergonomically();
385 WB_END
386
387 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
388 oop p = JNIHandles::resolve(obj);
389 #if INCLUDE_G1GC
390 if (UseG1GC) {
391 G1CollectedHeap* g1h = G1CollectedHeap::heap();
392 const HeapRegion* hr = g1h->heap_region_containing(p);
393 return !(hr->is_young());
394 }
395 #endif
396 #if INCLUDE_PARALLELGC
397 if (UseParallelGC) {
398 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
399 return !psh->is_in_young(p);
400 }
401 #endif
402 #if INCLUDE_ZGC
403 if (UseZGC) {
404 if (ZGenerational) {
405 return ZHeap::heap()->is_old(to_zaddress(p));
406 } else {
407 return Universe::heap()->is_in(p);
408 }
409 }
410 #endif
411 #if INCLUDE_SHENANDOAHGC
412 if (UseShenandoahGC) {
413 ShenandoahHeap* sh = ShenandoahHeap::heap();
414 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
415 }
416 #endif
417 GenCollectedHeap* gch = GenCollectedHeap::heap();
418 return !gch->is_in_young(p);
419 WB_END
420
421 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
422 oop p = JNIHandles::resolve(obj);
423 return p->size() * HeapWordSize;
424 WB_END
425
426 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
427 return (jlong)SpaceAlignment;
428 WB_END
429
430 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
431 return (jlong)HeapAlignment;
432 WB_END
433
434 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
435 return Universe::heap()->supports_concurrent_gc_breakpoints();
436 WB_END
437
438 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
439 ConcurrentGCBreakpoints::acquire_control();
440 WB_END
441
442 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
443 ConcurrentGCBreakpoints::release_control();
444 WB_END
445
446 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
447 ConcurrentGCBreakpoints::run_to_idle();
448 WB_END
449
450 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
451 Handle h_name(THREAD, JNIHandles::resolve(at));
452 ResourceMark rm;
453 const char* c_name = java_lang_String::as_utf8_string(h_name());
454 return ConcurrentGCBreakpoints::run_to(c_name);
455 WB_END
456
457 #if INCLUDE_G1GC
458
459 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
460 if (UseG1GC) {
461 G1CollectedHeap* g1h = G1CollectedHeap::heap();
462 oop result = JNIHandles::resolve(obj);
463 const HeapRegion* hr = g1h->heap_region_containing(result);
464 return hr->is_humongous();
465 }
466 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
467 WB_END
468
469 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
470 if (UseG1GC) {
471 G1CollectedHeap* g1h = G1CollectedHeap::heap();
472 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
473 return hr->is_humongous();
474 }
475 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
476 WB_END
477
478 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
479 if (UseG1GC) {
480 G1CollectedHeap* g1h = G1CollectedHeap::heap();
481 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
482 return hr->is_free();
483 }
484 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
485 WB_END
486
487 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
488 if (UseG1GC) {
489 G1CollectedHeap* g1h = G1CollectedHeap::heap();
490 size_t nr = g1h->max_regions();
491 return (jlong)nr;
492 }
493 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
494 WB_END
495
496 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
497 if (UseG1GC) {
498 G1CollectedHeap* g1h = G1CollectedHeap::heap();
499 size_t nr = g1h->num_free_regions();
500 return (jlong)nr;
501 }
502 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
503 WB_END
504
505 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
506 if (UseG1GC) {
507 G1CollectedHeap* g1h = G1CollectedHeap::heap();
508 return g1h->concurrent_mark()->cm_thread()->in_progress();
509 }
510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
511 WB_END
512
513 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
514 if (UseG1GC) {
515 G1CollectedHeap* g1h = G1CollectedHeap::heap();
516 G1ConcurrentMark* cm = g1h->concurrent_mark();
517 return cm->completed_mark_cycles();
518 }
519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
520 WB_END
521
522 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
523 if (UseG1GC) {
524 return (jint)HeapRegion::GrainBytes;
525 }
526 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
527 WB_END
528
529 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
530 if (UseG1GC) {
531 return G1CollectedHeap::heap()->has_uncommittable_regions();
532 }
533 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
534 WB_END
535
536 #endif // INCLUDE_G1GC
537
538 #if INCLUDE_PARALLELGC
539
540 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
541 if (UseParallelGC) {
542 return GenAlignment;
543 }
544 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
545 WB_END
546
547 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
548 if (UseParallelGC) {
549 return GenAlignment;
550 }
551 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
552 WB_END
553
554 #endif // INCLUDE_PARALLELGC
555
556 #if INCLUDE_G1GC
557
558 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
559 if (UseG1GC) {
560 ResourceMark rm(THREAD);
561 G1CollectedHeap* g1h = G1CollectedHeap::heap();
562 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
563 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
564 return JNIHandles::make_local(THREAD, h());
565 }
566 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
567 WB_END
568
569 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
570 if (UseG1GC) {
571 G1NUMA* numa = G1NUMA::numa();
572 return (jint)numa->num_active_nodes();
573 }
574 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
575 WB_END
576
577 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
578 if (UseG1GC) {
579 G1NUMA* numa = G1NUMA::numa();
580 int num_node_ids = (int)numa->num_active_nodes();
581 const int* node_ids = numa->node_ids();
582
583 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
584 for (int i = 0; i < num_node_ids; i++) {
585 result->int_at_put(i, (jint)node_ids[i]);
586 }
587 return (jintArray) JNIHandles::make_local(THREAD, result);
588 }
589 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
590 WB_END
591
592 class OldRegionsLivenessClosure: public HeapRegionClosure {
593
594 private:
595 const int _liveness;
596 size_t _total_count;
597 size_t _total_memory;
598 size_t _total_memory_to_free;
599
600 public:
601 OldRegionsLivenessClosure(int liveness) :
602 _liveness(liveness),
603 _total_count(0),
604 _total_memory(0),
605 _total_memory_to_free(0) { }
606
607 size_t total_count() { return _total_count; }
608 size_t total_memory() { return _total_memory; }
609 size_t total_memory_to_free() { return _total_memory_to_free; }
610
611 bool do_heap_region(HeapRegion* r) {
612 if (r->is_old()) {
613 size_t live = r->live_bytes();
614 size_t size = r->used();
615 size_t reg_size = HeapRegion::GrainBytes;
616 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
617 _total_memory += size;
618 ++_total_count;
619 if (size == reg_size) {
620 // We don't include non-full regions since they are unlikely included in mixed gc
621 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
622 _total_memory_to_free += size - live;
623 }
624 }
625 }
626 return false;
627 }
628 };
629
630
631 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
632 if (!UseG1GC) {
633 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
634 }
635 if (liveness < 0) {
636 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
637 }
638
639 G1CollectedHeap* g1h = G1CollectedHeap::heap();
640 OldRegionsLivenessClosure rli(liveness);
641 g1h->heap_region_iterate(&rli);
642
643 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
644 result->long_at_put(0, rli.total_count());
645 result->long_at_put(1, rli.total_memory());
646 result->long_at_put(2, rli.total_memory_to_free());
647 return (jlongArray) JNIHandles::make_local(THREAD, result);
648 WB_END
649
650 #endif // INCLUDE_G1GC
651
652 // Alloc memory using the test memory type so that we can use that to see if
653 // NMT picks it up correctly
654 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
655 jlong addr = 0;
656 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
657 return addr;
658 WB_END
659
660 // Alloc memory with pseudo call stack. The test can create pseudo malloc
661 // allocation site to stress the malloc tracking.
662 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
663 address pc = (address)(size_t)pseudo_stack;
664 NativeCallStack stack(&pc, 1);
665 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
666 WB_END
667
668 // Alloc memory with pseudo call stack and specific memory type.
669 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
670 address pc = (address)(size_t)pseudo_stack;
671 NativeCallStack stack(&pc, 1);
672 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
673 WB_END
674
675 // Free the memory allocated by NMTAllocTest
676 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
677 os::free((void*)(uintptr_t)mem);
678 WB_END
679
680 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
681 jlong addr = 0;
682
683 addr = (jlong)(uintptr_t)os::reserve_memory(size);
684 MemTracker::record_virtual_memory_type((address)addr, mtTest);
685
686 return addr;
687 WB_END
688
689 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
690 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
691 MemTracker::record_virtual_memory_type((address)addr, mtTest);
692
693 return addr;
694 WB_END
695
696 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
697 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
698 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
699 WB_END
700
701 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
702 os::uncommit_memory((char *)(uintptr_t)addr, size);
703 WB_END
704
705 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
706 os::release_memory((char *)(uintptr_t)addr, size);
707 WB_END
708
709 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
710 int hash_size = MallocSiteTable::hash_buckets();
711 assert(hash_size > 0, "NMT hash_size should be > 0");
712 return (jint)hash_size;
713 WB_END
714
715 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
716 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
717 return (jlong)arena;
718 WB_END
719
720 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
721 Arena* a = (Arena*)arena;
722 delete a;
723 WB_END
724
725 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
726 Arena* a = (Arena*)arena;
727 a->Amalloc(size_t(size));
728 WB_END
729
730 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
731 assert(method != nullptr, "method should not be null");
732 ThreadToNativeFromVM ttn(thread);
733 return env->FromReflectedMethod(method);
734 }
735
736 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
737 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
738 private:
739 int _result;
740 const bool _make_not_entrant;
741 public:
742 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
743 _result(0), _make_not_entrant(make_not_entrant) { }
744 int result() const { return _result; }
745
746 void doit() {
747 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
748 if (t->has_last_Java_frame()) {
749 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
750 frame* f = fst.current();
751 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
752 Deoptimization::deoptimize(t, *f);
753 if (_make_not_entrant) {
754 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
755 assert(cm != nullptr, "sanity check");
756 cm->make_not_entrant();
757 }
758 ++_result;
759 }
760 }
761 }
762 }
763 }
764 };
765
766 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
767 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
768 VMThread::execute(&op);
769 return op.result();
770 WB_END
771
772 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
773 bool result = false;
774 if (thread->has_last_Java_frame()) {
775 ResourceMark rm(THREAD);
776 RegisterMap reg_map(thread,
777 RegisterMap::UpdateMap::include,
778 RegisterMap::ProcessFrames::include,
779 RegisterMap::WalkContinuation::skip);
780 javaVFrame *jvf = thread->last_java_vframe(®_map);
781 for (jint d = 0; d < depth && jvf != nullptr; d++) {
782 jvf = jvf->java_sender();
783 }
784 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
785 }
786 return result;
787 WB_END
788
789 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
790 DeoptimizationScope deopt_scope;
791 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
792 deopt_scope.deoptimize_marked();
793 WB_END
794
795 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
796 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
797 int result = 0;
798 CHECK_JNI_EXCEPTION_(env, result);
799
800 DeoptimizationScope deopt_scope;
801 {
802 MutexLocker mu(Compile_lock);
803 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
804 if (is_osr) {
805 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
806 } else {
807 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
808 if (mh->code() != nullptr) {
809 deopt_scope.mark(mh->code());
810 ++result;
811 }
812 }
813 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
814 }
815
816 deopt_scope.deoptimize_marked();
817
818 return result;
819 WB_END
820
821 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
822 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
823 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
824 MutexLocker mu(Compile_lock);
825 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
826 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
827 if (code == nullptr) {
828 return JNI_FALSE;
829 }
830 return !code->is_marked_for_deoptimization();
831 WB_END
832
833 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
834 if (comp == nullptr) {
835 return true;
836 }
837 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
838 bool exclude = directive->ExcludeOption;
839 DirectivesStack::release(directive);
840 return exclude;
841 }
842
843 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
844 if (is_osr) {
845 return CompilationPolicy::can_be_osr_compiled(mh, level);
846 } else {
847 return CompilationPolicy::can_be_compiled(mh, level);
848 }
849 }
850
851 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
852 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
853 return false;
854 }
855 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
856 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
857 MutexLocker mu(Compile_lock);
858 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
859
860 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
861 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
862 // to exclude a compilation of 'method'.
863 if (comp_level == CompLevel_any) {
864 // Both compilers could have ExcludeOption set. Check all combinations.
865 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
866 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
867 if (excluded_c1 && excluded_c2) {
868 // Compilation of 'method' excluded by both compilers.
869 return false;
870 }
871
872 if (excluded_c1) {
873 // C1 only has ExcludeOption set: Check if compilable with C2.
874 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
875 } else if (excluded_c2) {
876 // C2 only has ExcludeOption set: Check if compilable with C1.
877 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
878 }
879 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
880 // Compilation of 'method' excluded by compiler used for 'comp_level'.
881 return false;
882 }
883
884 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
885 WB_END
886
887 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
888 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
889 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
890 MutexLocker mu(Compile_lock);
891 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
892 return mh->queued_for_compilation();
893 WB_END
894
895 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
896 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
897 return false; // Intrinsic is not available on a non-existent compilation level.
898 }
899 jmethodID method_id, compilation_context_id;
900 method_id = reflected_method_to_jmid(thread, env, method);
901 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
902 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
903
904 DirectiveSet* directive;
905 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
906 assert(comp != nullptr, "compiler not available");
907 if (compilation_context != nullptr) {
908 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
909 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
910 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
911 directive = DirectivesStack::getMatchingDirective(cch, comp);
912 } else {
913 // Calling with null matches default directive
914 directive = DirectivesStack::getDefaultDirective(comp);
915 }
916 bool result = comp->is_intrinsic_available(mh, directive);
917 DirectivesStack::release(directive);
918 return result;
919 WB_END
920
921 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
922 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
923 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
924 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
925 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
926 return (code != nullptr ? code->comp_level() : CompLevel_none);
927 WB_END
928
929 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
930 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
931 CHECK_JNI_EXCEPTION(env);
932 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
933 if (is_osr) {
934 mh->set_not_osr_compilable("WhiteBox", comp_level);
935 } else {
936 mh->set_not_compilable("WhiteBox", comp_level);
937 }
938 WB_END
939
940 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
941 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
942 CHECK_JNI_EXCEPTION_(env, 0);
943 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
944 uint cnt = 0;
945 MethodData* mdo = mh->method_data();
946 if (mdo != nullptr) {
947 cnt = mdo->decompile_count();
948 }
949 return cnt;
950 WB_END
951
952 // Get the trap count of a method for a specific reason. If the trap count for
953 // that reason did overflow, this includes the overflow trap count of the method.
954 // If 'reason' is null, the sum of the traps for all reasons will be returned.
955 // This number includes the overflow trap count if the trap count for any reason
956 // did overflow.
957 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
958 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
959 CHECK_JNI_EXCEPTION_(env, 0);
960 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
961 uint cnt = 0;
962 MethodData* mdo = mh->method_data();
963 if (mdo != nullptr) {
964 ResourceMark rm(THREAD);
965 char* reason_str = (reason_obj == nullptr) ?
966 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
967 bool overflow = false;
968 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
969 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
970 cnt = mdo->trap_count(reason);
971 // Count in the overflow trap count on overflow
972 if (cnt == (uint)-1) {
973 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
974 }
975 break;
976 } else if (reason_str == nullptr) {
977 uint c = mdo->trap_count(reason);
978 if (c == (uint)-1) {
979 c = mdo->trap_count_limit();
980 if (!overflow) {
981 // Count overflow trap count just once
982 overflow = true;
983 c += mdo->overflow_trap_count();
984 }
985 }
986 cnt += c;
987 }
988 }
989 }
990 return cnt;
991 WB_END
992
993 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
994 if (reason_obj == nullptr && action_obj == nullptr) {
995 return Deoptimization::total_deoptimization_count();
996 }
997 ResourceMark rm(THREAD);
998 const char *reason_str = (reason_obj == nullptr) ?
999 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1000 const char *action_str = (action_obj == nullptr) ?
1001 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1002
1003 return Deoptimization::deoptimization_count(reason_str, action_str);
1004 WB_END
1005
1006 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1007 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1008 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1009 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1010 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1011 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1012 WB_END
1013
1014 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1015 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1016 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1017 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1018 bool result = mh->dont_inline();
1019 mh->set_dont_inline(value == JNI_TRUE);
1020 return result;
1021 WB_END
1022
1023 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1024 if (comp_level == CompLevel_any) {
1025 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1026 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1027 } else {
1028 return CompileBroker::queue_size(comp_level);
1029 }
1030 WB_END
1031
1032 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1033 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1034 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1035 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1036 bool result = mh->force_inline();
1037 mh->set_force_inline(value == JNI_TRUE);
1038 return result;
1039 WB_END
1040
1041 #ifdef LINUX
1042 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1043 const char* proc_self_cgroup,
1044 const char* proc_self_mountinfo,
1045 u1* cg_flags) {
1046 CgroupInfo cg_infos[CG_INFO_LENGTH];
1047 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1048 proc_self_cgroup,
1049 proc_self_mountinfo, cg_flags);
1050 }
1051 #endif
1052
1053 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1054 // Screen for unavailable/bad comp level or null method
1055 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1056 if (method == nullptr) {
1057 tty->print_cr("WB error: request to compile null method");
1058 return false;
1059 }
1060 if (comp_level > CompilationPolicy::highest_compile_level()) {
1061 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1062 return false;
1063 }
1064 if (comp == nullptr) {
1065 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1066 return false;
1067 }
1068
1069 // Check if compilation is blocking
1070 methodHandle mh(THREAD, method);
1071 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1072 bool is_blocking = !directive->BackgroundCompilationOption;
1073 DirectivesStack::release(directive);
1074
1075 // Compile method and check result
1076 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1077 MutexLocker mu(THREAD, Compile_lock);
1078 bool is_queued = mh->queued_for_compilation();
1079 if ((!is_blocking && is_queued) || nm != nullptr) {
1080 return true;
1081 }
1082 // Check code again because compilation may be finished before Compile_lock is acquired.
1083 if (bci == InvocationEntryBci) {
1084 CompiledMethod* code = mh->code();
1085 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1086 return true;
1087 }
1088 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1089 return true;
1090 }
1091 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1092 mh->print_short_name(tty);
1093 tty->cr();
1094 if (is_blocking && is_queued) {
1095 tty->print_cr("WB error: blocking compilation is still in queue!");
1096 }
1097 return false;
1098 }
1099
1100 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1101 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1102 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1103 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1104 WB_END
1105
1106 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1107 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1108 Method* clinit = ik->class_initializer();
1109 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1110 return false;
1111 }
1112 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1113 WB_END
1114
1115 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1116 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1117 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1118
1119 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1120 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1121 bool result = directive->PrintAssemblyOption;
1122 DirectivesStack::release(directive);
1123
1124 return result;
1125 WB_END
1126
1127 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1128 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1129 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1130
1131 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1132
1133 ResourceMark rm(THREAD);
1134 const char* error_msg = nullptr;
1135 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1136 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1137
1138 if (m == nullptr) {
1139 assert(error_msg != nullptr, "Always have an error message");
1140 tty->print_cr("Got error: %s", error_msg);
1141 return -1; // Pattern failed
1142 }
1143
1144 // Pattern works - now check if it matches
1145 int result;
1146 if (m->match(mh, InlineMatcher::force_inline)) {
1147 result = 2; // Force inline match
1148 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1149 result = 1; // Dont inline match
1150 } else {
1151 result = 0; // No match
1152 }
1153 delete m;
1154 return result;
1155 WB_END
1156
1157 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1158 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1159 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1160
1161 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1162
1163 ResourceMark rm;
1164 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1165
1166 const char* error_msg = nullptr;
1167
1168 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1169 if (m == nullptr) {
1170 assert(error_msg != nullptr, "Must have error_msg");
1171 tty->print_cr("Got error: %s", error_msg);
1172 return -1;
1173 }
1174
1175 // Pattern works - now check if it matches
1176 int result = m->matches(mh);
1177 delete m;
1178 assert(result == 0 || result == 1, "Result out of range");
1179 return result;
1180 WB_END
1181
1182 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1183 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1184 CHECK_JNI_EXCEPTION(env);
1185 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1186
1187 MethodData* mdo = mh->method_data();
1188 if (mdo == nullptr) {
1189 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1190 mdo = mh->method_data();
1191 }
1192 mdo->init();
1193 InvocationCounter* icnt = mdo->invocation_counter();
1194 InvocationCounter* bcnt = mdo->backedge_counter();
1195 // set i-counter according to CompilationPolicy::is_method_profiled
1196 icnt->set(Tier4MinInvocationThreshold);
1197 bcnt->set(Tier4CompileThreshold);
1198 WB_END
1199
1200 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1201 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1202 CHECK_JNI_EXCEPTION(env);
1203 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1204 MutexLocker mu(THREAD, Compile_lock);
1205 MethodData* mdo = mh->method_data();
1206 MethodCounters* mcs = mh->method_counters();
1207
1208 if (mdo != nullptr) {
1209 mdo->init();
1210 ResourceMark rm(THREAD);
1211 int arg_count = mdo->method()->size_of_parameters();
1212 for (int i = 0; i < arg_count; i++) {
1213 mdo->set_arg_modified(i, 0);
1214 }
1215 MutexLocker mu(THREAD, mdo->extra_data_lock());
1216 mdo->clean_method_data(/*always_clean*/true);
1217 }
1218
1219 mh->clear_is_not_c1_compilable();
1220 mh->clear_is_not_c2_compilable();
1221 mh->clear_is_not_c2_osr_compilable();
1222 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1223 if (mcs != nullptr) {
1224 mcs->clear_counters();
1225 }
1226 WB_END
1227
1228 template <typename T, int type_enum>
1229 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1230 if (name == nullptr) {
1231 return false;
1232 }
1233 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1234 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1235 CHECK_JNI_EXCEPTION_(env, false);
1236 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1237 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1238 env->ReleaseStringUTFChars(name, flag_name);
1239 return (result == JVMFlag::SUCCESS);
1240 }
1241
1242 template <typename T, int type_enum>
1243 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1244 if (name == nullptr) {
1245 return false;
1246 }
1247 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1248 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1249 CHECK_JNI_EXCEPTION_(env, false);
1250 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1251 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1252 env->ReleaseStringUTFChars(name, flag_name);
1253 return (result == JVMFlag::SUCCESS);
1254 }
1255
1256 template <typename T>
1257 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1258 ResourceMark rm(thread);
1259 jclass clazz = env->FindClass(name->as_C_string());
1260 CHECK_JNI_EXCEPTION_(env, nullptr);
1261 jmethodID methodID = env->GetStaticMethodID(clazz,
1262 vmSymbols::valueOf_name()->as_C_string(),
1263 sig->as_C_string());
1264 CHECK_JNI_EXCEPTION_(env, nullptr);
1265 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1266 CHECK_JNI_EXCEPTION_(env, nullptr);
1267 return result;
1268 }
1269
1270 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1271 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1272 }
1273 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1274 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1275 }
1276 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1277 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1278 }
1279 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1280 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1281 }*/
1282 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1283 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1284 }
1285
1286 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1287 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1288 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1289 CHECK_JNI_EXCEPTION_(env, nullptr);
1290 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1291 env->ReleaseStringUTFChars(name, flag_name);
1292 return result;
1293 }
1294
1295 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1296 const JVMFlag* flag = getVMFlag(thread, env, name);
1297 return (flag != nullptr) && flag->is_constant_in_binary();
1298 WB_END
1299
1300 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1301 const JVMFlag* flag = getVMFlag(thread, env, name);
1302 return (flag != nullptr) && flag->is_default();
1303 WB_END
1304
1305 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1306 const JVMFlag* flag = getVMFlag(thread, env, name);
1307 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1308 WB_END
1309
1310 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1311 bool result;
1312 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1313 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1314 return booleanBox(thread, env, result);
1315 }
1316 return nullptr;
1317 WB_END
1318
1319 template <typename T, int type_enum>
1320 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1321 T result;
1322 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1323 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1324 return longBox(thread, env, result);
1325 }
1326 return nullptr;
1327 }
1328
1329 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1330 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1331 WB_END
1332
1333 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1334 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1335 WB_END
1336
1337 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1338 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1339 WB_END
1340
1341 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1342 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1343 WB_END
1344
1345 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1346 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1347 WB_END
1348
1349 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1350 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1351 WB_END
1352
1353 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1354 double result;
1355 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1356 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1357 return doubleBox(thread, env, result);
1358 }
1359 return nullptr;
1360 WB_END
1361
1362 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1363 ccstr ccstrResult;
1364 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1365 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1366 jstring result = env->NewStringUTF(ccstrResult);
1367 CHECK_JNI_EXCEPTION_(env, nullptr);
1368 return result;
1369 }
1370 return nullptr;
1371 WB_END
1372
1373 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1374 bool result = value == JNI_TRUE ? true : false;
1375 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1376 WB_END
1377
1378 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1379 int result = value;
1380 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1381 WB_END
1382
1383 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1384 uint result = value;
1385 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1386 WB_END
1387
1388 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1389 intx result = value;
1390 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1391 WB_END
1392
1393 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1394 uintx result = value;
1395 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1396 WB_END
1397
1398 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1399 uint64_t result = value;
1400 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1401 WB_END
1402
1403 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1404 size_t result = value;
1405 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1406 WB_END
1407
1408 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1409 double result = value;
1410 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1411 WB_END
1412
1413 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1414 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1415 const char* ccstrValue;
1416 if (value == nullptr) {
1417 ccstrValue = nullptr;
1418 }
1419 else {
1420 ccstrValue = env->GetStringUTFChars(value, nullptr);
1421 CHECK_JNI_EXCEPTION(env);
1422 }
1423 {
1424 ccstr param = ccstrValue;
1425 ThreadInVMfromNative ttvfn(thread); // back to VM
1426 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1427 assert(param == nullptr, "old value is freed automatically and not returned");
1428 }
1429 }
1430 if (value != nullptr) {
1431 env->ReleaseStringUTFChars(value, ccstrValue);
1432 }
1433 WB_END
1434
1435 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1436 WhiteBox::compilation_locked = true;
1437 WB_END
1438
1439 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1440 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1441 WhiteBox::compilation_locked = false;
1442 mo.notify_all();
1443 WB_END
1444
1445 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1446 ResourceMark rm(THREAD);
1447 int len;
1448 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1449 return (StringTable::lookup(name, len) != nullptr);
1450 WB_END
1451
1452 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1453 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1454 Universe::heap()->collect(GCCause::_wb_full_gc);
1455 #if INCLUDE_G1GC
1456 if (UseG1GC) {
1457 // Needs to be cleared explicitly for G1
1458 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1459 }
1460 #endif // INCLUDE_G1GC
1461 WB_END
1462
1463 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1464 Universe::heap()->collect(GCCause::_wb_young_gc);
1465 WB_END
1466
1467 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1468 // static+volatile in order to force the read to happen
1469 // (not be eliminated by the compiler)
1470 static char c;
1471 static volatile char* p;
1472
1473 p = os::reserve_memory(os::vm_allocation_granularity());
1474 if (p == nullptr) {
1475 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1476 }
1477
1478 c = *p;
1479 WB_END
1480
1481 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1482 const char* features = VM_Version::features_string();
1483 ThreadToNativeFromVM ttn(thread);
1484 jstring features_string = env->NewStringUTF(features);
1485
1486 CHECK_JNI_EXCEPTION_(env, nullptr);
1487
1488 return features_string;
1489 WB_END
1490
1491 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1492 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1493 return CodeCache::get_code_heap(code)->code_blob_type();
1494 }
1495
1496 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1497 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1498 return CodeCache::get_code_heap(blob_type);
1499 }
1500
1501 struct CodeBlobStub {
1502 CodeBlobStub(const CodeBlob* blob) :
1503 name(os::strdup(blob->name())),
1504 size(blob->size()),
1505 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1506 address((jlong) blob) { }
1507 ~CodeBlobStub() { os::free((void*) name); }
1508 const char* const name;
1509 const jint size;
1510 const jint blob_type;
1511 const jlong address;
1512 };
1513
1514 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1515 ResourceMark rm;
1516 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1517 CHECK_JNI_EXCEPTION_(env, nullptr);
1518 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1519
1520 jstring name = env->NewStringUTF(cb->name);
1521 CHECK_JNI_EXCEPTION_(env, nullptr);
1522 env->SetObjectArrayElement(result, 0, name);
1523
1524 jobject obj = integerBox(thread, env, cb->size);
1525 CHECK_JNI_EXCEPTION_(env, nullptr);
1526 env->SetObjectArrayElement(result, 1, obj);
1527
1528 obj = integerBox(thread, env, cb->blob_type);
1529 CHECK_JNI_EXCEPTION_(env, nullptr);
1530 env->SetObjectArrayElement(result, 2, obj);
1531
1532 obj = longBox(thread, env, cb->address);
1533 CHECK_JNI_EXCEPTION_(env, nullptr);
1534 env->SetObjectArrayElement(result, 3, obj);
1535
1536 return result;
1537 }
1538
1539 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1540 ResourceMark rm(THREAD);
1541 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1542 CHECK_JNI_EXCEPTION_(env, nullptr);
1543 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1544 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1545 jobjectArray result = nullptr;
1546 if (code == nullptr) {
1547 return result;
1548 }
1549 int comp_level = code->comp_level();
1550 int insts_size = code->insts_size();
1551
1552 ThreadToNativeFromVM ttn(thread);
1553 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1554 CHECK_JNI_EXCEPTION_(env, nullptr);
1555 result = env->NewObjectArray(5, clazz, nullptr);
1556 if (result == nullptr) {
1557 return result;
1558 }
1559
1560 CodeBlobStub stub(code);
1561 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1562 CHECK_JNI_EXCEPTION_(env, nullptr);
1563 env->SetObjectArrayElement(result, 0, codeBlob);
1564
1565 jobject level = integerBox(thread, env, comp_level);
1566 CHECK_JNI_EXCEPTION_(env, nullptr);
1567 env->SetObjectArrayElement(result, 1, level);
1568
1569 jbyteArray insts = env->NewByteArray(insts_size);
1570 CHECK_JNI_EXCEPTION_(env, nullptr);
1571 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1572 env->SetObjectArrayElement(result, 2, insts);
1573
1574 jobject id = integerBox(thread, env, code->compile_id());
1575 CHECK_JNI_EXCEPTION_(env, nullptr);
1576 env->SetObjectArrayElement(result, 3, id);
1577
1578 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1579 CHECK_JNI_EXCEPTION_(env, nullptr);
1580 env->SetObjectArrayElement(result, 4, entry_point);
1581
1582 return result;
1583 WB_END
1584
1585 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1586 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1587 BufferBlob* blob;
1588 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1589 if (full_size < size) {
1590 full_size += align_up(size - full_size, oopSize);
1591 }
1592 {
1593 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1594 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1595 if (blob != nullptr) {
1596 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1597 }
1598 }
1599 // Track memory usage statistic after releasing CodeCache_lock
1600 MemoryService::track_code_cache_memory_usage();
1601 return blob;
1602 }
1603
1604 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1605 if (size < 0) {
1606 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1607 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1608 }
1609 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1610 WB_END
1611
1612 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1613 if (addr == 0) {
1614 return;
1615 }
1616 BufferBlob::free((BufferBlob*) addr);
1617 WB_END
1618
1619 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1620 ResourceMark rm;
1621 GrowableArray<CodeBlobStub*> blobs;
1622 {
1623 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1624 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1625 if (heap == nullptr) {
1626 return nullptr;
1627 }
1628 for (CodeBlob* cb = (CodeBlob*) heap->first();
1629 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1630 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1631 new (stub) CodeBlobStub(cb);
1632 blobs.append(stub);
1633 }
1634 }
1635 ThreadToNativeFromVM ttn(thread);
1636 jobjectArray result = nullptr;
1637 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1638 CHECK_JNI_EXCEPTION_(env, nullptr);
1639 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1640 CHECK_JNI_EXCEPTION_(env, nullptr);
1641 if (result == nullptr) {
1642 return result;
1643 }
1644 int i = 0;
1645 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1646 it != blobs.end(); ++it) {
1647 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1648 CHECK_JNI_EXCEPTION_(env, nullptr);
1649 env->SetObjectArrayElement(result, i, obj);
1650 CHECK_JNI_EXCEPTION_(env, nullptr);
1651 ++i;
1652 }
1653 return result;
1654 WB_END
1655
1656 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1657 return CompileBroker::get_compilation_activity_mode();
1658 WB_END
1659
1660 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1661 if (addr == 0) {
1662 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1663 "WB_GetCodeBlob: addr is null");
1664 }
1665 ThreadToNativeFromVM ttn(thread);
1666 CodeBlobStub stub((CodeBlob*) addr);
1667 return codeBlob2objectArray(thread, env, &stub);
1668 WB_END
1669
1670 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1671 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1672 CHECK_JNI_EXCEPTION_(env, 0);
1673 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1674 return (jlong) mh->method_data();
1675 WB_END
1676
1677 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1678 return (jlong) thread->stack_size();
1679 WB_END
1680
1681 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1682 return (jlong) thread->stack_overflow_state()->stack_available(
1683 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1684 WB_END
1685
1686
1687 int WhiteBox::array_bytes_to_length(size_t bytes) {
1688 return Array<u1>::bytes_to_length(bytes);
1689 }
1690
1691 ///////////////
1692 // MetaspaceTestContext and MetaspaceTestArena
1693 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1694 metaspace::MetaspaceTestContext* context =
1695 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1696 return (jlong)p2i(context);
1697 WB_END
1698
1699 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1700 delete (metaspace::MetaspaceTestContext*) context;
1701 WB_END
1702
1703 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1704 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1705 context0->purge_area();
1706 WB_END
1707
1708 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1709 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1710 context0->print_on(tty);
1711 WB_END
1712
1713 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1714 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1715 return context0->committed_words();
1716 WB_END
1717
1718 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1719 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1720 return context0->used_words();
1721 WB_END
1722
1723 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1724 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1725 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1726 return (jlong)p2i(context0->create_arena(type));
1727 WB_END
1728
1729 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1730 delete (metaspace::MetaspaceTestArena*) arena;
1731 WB_END
1732
1733 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1734 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1735 MetaWord* p = arena0->allocate((size_t) word_size);
1736 return (jlong)p2i(p);
1737 WB_END
1738
1739 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1740 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1741 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1742 WB_END
1743
1744 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1745 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1746 WB_END
1747
1748 //////////////
1749
1750 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1751 if (size < 0) {
1752 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1753 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1754 }
1755
1756 oop class_loader_oop = JNIHandles::resolve(class_loader);
1757 ClassLoaderData* cld = class_loader_oop != nullptr
1758 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1759 : ClassLoaderData::the_null_class_loader_data();
1760
1761 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1762
1763 return (jlong)(uintptr_t)metadata;
1764 WB_END
1765
1766 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1767 jstring version, jstring location, jobjectArray packages))
1768 Handle h_module (THREAD, JNIHandles::resolve(module));
1769 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1770 WB_END
1771
1772 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1773 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1774 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1775 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1776 WB_END
1777
1778 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1779 Handle h_module (THREAD, JNIHandles::resolve(module));
1780 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1781 WB_END
1782
1783 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1784 Handle h_module (THREAD, JNIHandles::resolve(module));
1785 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1786 WB_END
1787
1788 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1789 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1790 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1791 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1792 WB_END
1793
1794 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1795 if (inc < 0) {
1796 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1797 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1798 }
1799
1800 jlong max_size_t = (jlong) ((size_t) -1);
1801 if (inc > max_size_t) {
1802 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1803 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1804 }
1805
1806 size_t new_cap_until_GC = 0;
1807 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1808 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1809 if (!success) {
1810 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1811 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1812 "due to contention with another thread");
1813 }
1814 return (jlong) new_cap_until_GC;
1815 WB_END
1816
1817 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1818 return (jlong) MetaspaceGC::capacity_until_GC();
1819 WB_END
1820
1821 // The function is only valid when CDS is available.
1822 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1823 #if INCLUDE_CDS
1824 return (jlong)MetaspaceShared::core_region_alignment();
1825 #else
1826 ShouldNotReachHere();
1827 return 0L;
1828 #endif
1829 WB_END
1830
1831 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1832 oop obj_oop = JNIHandles::resolve(obj);
1833 return (jboolean) obj_oop->mark().has_monitor();
1834 WB_END
1835
1836 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1837 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1838 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1839 WB_END
1840
1841 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1842 VM_ForceSafepoint force_safepoint_op;
1843 VMThread::execute(&force_safepoint_op);
1844 WB_END
1845
1846 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1847 nullStream dev_null;
1848 ClassLoaderStatsVMOperation force_op(&dev_null);
1849 VMThread::execute(&force_op);
1850 WB_END
1851
1852 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1853 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1854 return (jlong) ik->constants();
1855 WB_END
1856
1857 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1858 return ConstantPool::CPCACHE_INDEX_TAG;
1859 WB_END
1860
1861 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1862 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1863 ConstantPool* cp = ik->constants();
1864 if (cp->cache() == nullptr) {
1865 return -1;
1866 }
1867 return cp->cache()->length();
1868 WB_END
1869
1870 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1871 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1872 objArrayOop resolved_refs= ik->constants()->resolved_references();
1873 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1874 WB_END
1875
1876 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1877 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1878 ConstantPool* cp = ik->constants();
1879 if (cp->cache() == nullptr) {
1880 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1881 }
1882 jint cpci = index;
1883 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1884 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1885 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1886 }
1887 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1888 return cpi;
1889 WB_END
1890
1891 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1892 return ConstantPool::encode_invokedynamic_index(index);
1893 WB_END
1894
1895 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1896 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1897 ConstantPool* cp = ik->constants();
1898 if (cp->cache() == nullptr) {
1899 return -1;
1900 }
1901 return cp->resolved_indy_entries_length();
1902 WB_END
1903
1904 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1905 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1906 ConstantPool* cp = ik->constants();
1907 if (cp->cache() == nullptr) {
1908 return -1;
1909 }
1910 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1911 WB_END
1912
1913 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1914 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1915 VMThread::execute(&clear_ics);
1916 WB_END
1917
1918 template <typename T>
1919 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1920 assert(value != nullptr, "sanity");
1921 if (method == nullptr || name == nullptr) {
1922 return false;
1923 }
1924 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1925 CHECK_JNI_EXCEPTION_(env, false);
1926 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1927 // can't be in VM when we call JNI
1928 ThreadToNativeFromVM ttnfv(thread);
1929 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1930 CHECK_JNI_EXCEPTION_(env, false);
1931 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1932 env->ReleaseStringUTFChars(name, flag_name);
1933 if (option == CompileCommand::Unknown) {
1934 return false;
1935 }
1936 if (!CompilerOracle::option_matches_type(option, *value)) {
1937 return false;
1938 }
1939 return CompilerOracle::has_option_value(mh, option, *value);
1940 }
1941
1942 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1943 bool result;
1944 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1945 // can't be in VM when we call JNI
1946 ThreadToNativeFromVM ttnfv(thread);
1947 return booleanBox(thread, env, result);
1948 }
1949 return nullptr;
1950 WB_END
1951
1952 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1953 intx result;
1954 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1955 // can't be in VM when we call JNI
1956 ThreadToNativeFromVM ttnfv(thread);
1957 return longBox(thread, env, result);
1958 }
1959 return nullptr;
1960 WB_END
1961
1962 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1963 uintx result;
1964 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1965 // can't be in VM when we call JNI
1966 ThreadToNativeFromVM ttnfv(thread);
1967 return longBox(thread, env, result);
1968 }
1969 return nullptr;
1970 WB_END
1971
1972 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1973 double result;
1974 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1975 // can't be in VM when we call JNI
1976 ThreadToNativeFromVM ttnfv(thread);
1977 return doubleBox(thread, env, result);
1978 }
1979 return nullptr;
1980 WB_END
1981
1982 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1983 ccstr ccstrResult;
1984 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1985 // can't be in VM when we call JNI
1986 ThreadToNativeFromVM ttnfv(thread);
1987 jstring result = env->NewStringUTF(ccstrResult);
1988 CHECK_JNI_EXCEPTION_(env, nullptr);
1989 return result;
1990 }
1991 return nullptr;
1992 WB_END
1993
1994 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1995 const char* p = Arguments::get_default_shared_archive_path();
1996 ThreadToNativeFromVM ttn(thread);
1997 jstring path_string = env->NewStringUTF(p);
1998
1999 CHECK_JNI_EXCEPTION_(env, nullptr);
2000
2001 return path_string;
2002 WB_END
2003
2004 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2005 return UseSharedSpaces;
2006 WB_END
2007
2008 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2009 #if INCLUDE_CDS
2010 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2011 #else
2012 ShouldNotReachHere();
2013 return (jint)-1;
2014 #endif
2015 WB_END
2016
2017 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2018 #if INCLUDE_CDS
2019 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2020 #else
2021 ShouldNotReachHere();
2022 return (jint)-1;
2023 #endif
2024 WB_END
2025
2026 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2027 return FileMapInfo::memory_mapping_failed();
2028 WB_END
2029
2030 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2031 ResourceMark rm(THREAD);
2032 oop str_oop = JNIHandles::resolve(str);
2033 int length;
2034 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2035 return StringTable::lookup_shared(chars, length) == str_oop;
2036 WB_END
2037
2038 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2039 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2040 WB_END
2041
2042 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2043 return ArchiveHeapLoader::is_mapped();
2044 WB_END
2045
2046 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2047 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2048 if (!k->is_instance_klass()) {
2049 return;
2050 }
2051 InstanceKlass *ik = InstanceKlass::cast(k);
2052 ik->link_class(THREAD); // may throw verification error
2053 WB_END
2054
2055 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2056 return ArchiveHeapLoader::is_mapped();
2057 WB_END
2058
2059 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2060 #if INCLUDE_CDS
2061 return true;
2062 #else
2063 return false;
2064 #endif // INCLUDE_CDS
2065 WB_END
2066
2067 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2068 #if COMPILER2_OR_JVMCI
2069 return true;
2070 #else
2071 return false;
2072 #endif
2073 WB_END
2074
2075 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2076 #if INCLUDE_JVMCI
2077 return JVMCIGlobals::gc_supports_jvmci();
2078 #else
2079 return false;
2080 #endif
2081 WB_END
2082
2083 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2084 return HeapShared::can_write();
2085 WB_END
2086
2087
2088 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2089 #if INCLUDE_JFR
2090 return true;
2091 #else
2092 return false;
2093 #endif // INCLUDE_JFR
2094 WB_END
2095
2096 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2097 #if defined(DTRACE_ENABLED)
2098 return true;
2099 #else
2100 return false;
2101 #endif // DTRACE_ENABLED
2102 WB_END
2103
2104 #if INCLUDE_CDS
2105
2106 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2107 ResourceMark rm;
2108 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2109 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2110 return result;
2111 WB_END
2112
2113 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2114 ResourceMark rm;
2115 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2116 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2117 return result;
2118 WB_END
2119
2120 #endif // INCLUDE_CDS
2121
2122 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2123 class ReadMonitorsClosure : public HandshakeClosure {
2124 jboolean _executed;
2125
2126 void do_thread(Thread* th) {
2127 JavaThread* jt = JavaThread::cast(th);
2128 ResourceMark rm;
2129
2130 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2131
2132 if (!jt->has_last_Java_frame()) {
2133 return;
2134 }
2135 RegisterMap rmap(jt,
2136 RegisterMap::UpdateMap::include,
2137 RegisterMap::ProcessFrames::include,
2138 RegisterMap::WalkContinuation::skip);
2139 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2140 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2141 if (monitors != nullptr) {
2142 int len = monitors->length();
2143 // Walk monitors youngest to oldest
2144 for (int i = len - 1; i >= 0; i--) {
2145 MonitorInfo* mon_info = monitors->at(i);
2146 if (mon_info->eliminated()) continue;
2147 oop owner = mon_info->owner();
2148 if (owner != nullptr) {
2149 info->append(mon_info);
2150 }
2151 }
2152 }
2153 }
2154 _executed = true;
2155 }
2156
2157 public:
2158 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2159 jboolean executed() const { return _executed; }
2160 };
2161
2162 ReadMonitorsClosure rmc;
2163 if (thread_handle != nullptr) {
2164 ThreadsListHandle tlh;
2165 JavaThread* target = nullptr;
2166 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2167 if (is_alive) {
2168 Handshake::execute(&rmc, &tlh, target);
2169 }
2170 }
2171 return rmc.executed();
2172 WB_END
2173
2174 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2175 class TraceSelfClosure : public HandshakeClosure {
2176 jint _num_threads_completed;
2177
2178 void do_thread(Thread* th) {
2179 JavaThread* jt = JavaThread::cast(th);
2180 ResourceMark rm;
2181
2182 jt->print_on(tty);
2183 jt->print_stack_on(tty);
2184 tty->cr();
2185 Atomic::inc(&_num_threads_completed);
2186 }
2187
2188 public:
2189 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2190
2191 jint num_threads_completed() const { return _num_threads_completed; }
2192 };
2193 TraceSelfClosure tsc(Thread::current());
2194
2195 if (all_threads) {
2196 Handshake::execute(&tsc);
2197 } else if (thread_handle != nullptr) {
2198 ThreadsListHandle tlh;
2199 JavaThread* target = nullptr;
2200 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2201 if (is_alive) {
2202 Handshake::execute(&tsc, &tlh, target);
2203 }
2204 }
2205 return tsc.num_threads_completed();
2206 WB_END
2207
2208 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2209 class TraceSelfClosure : public AsyncHandshakeClosure {
2210 JavaThread* _self;
2211 void do_thread(Thread* th) {
2212 assert(th->is_Java_thread(), "sanity");
2213 // AsynchHandshake handshakes are only executed by target.
2214 assert(_self == th, "Must be");
2215 assert(Thread::current() == th, "Must be");
2216 JavaThread* jt = JavaThread::cast(th);
2217 ResourceMark rm;
2218 jt->print_on(tty);
2219 jt->print_stack_on(tty);
2220 tty->cr();
2221 }
2222
2223 public:
2224 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2225 };
2226 if (thread_handle != nullptr) {
2227 ThreadsListHandle tlh;
2228 JavaThread* target = nullptr;
2229 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2230 if (is_alive) {
2231 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2232 Handshake::execute(tsc, target);
2233 }
2234 }
2235 WB_END
2236
2237 static volatile int _emulated_lock = 0;
2238
2239 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2240 JavaThread* self = JavaThread::current();
2241
2242 {
2243 // Before trying to acquire the lock transition into a safepoint safe state.
2244 // Otherwise if either suspender or suspendee blocks for a safepoint
2245 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2246 // the lock without allowing the safepoint to progress.
2247 ThreadBlockInVM tbivm(self);
2248
2249 // We will deadlock here if we are 'suspender' and 'suspendee'
2250 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2251 // at the right place.
2252 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2253 assert(_emulated_lock == 1, "Must be locked");
2254
2255 // Sleep much longer in suspendee to force situation where
2256 // 'suspender' is waiting above to acquire lock.
2257 os::naked_short_sleep(suspender ? 1 : 10);
2258 }
2259 Atomic::store(&_emulated_lock, 0);
2260 WB_END
2261
2262 // Some convenience methods to deal with objects from java
2263 int WhiteBox::offset_for_field(const char* field_name, oop object,
2264 Symbol* signature_symbol) {
2265 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2266
2267 //Get the class of our object
2268 Klass* arg_klass = object->klass();
2269 //Turn it into an instance-klass
2270 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2271
2272 //Create symbols to look for in the class
2273 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2274
2275 //To be filled in with an offset of the field we're looking for
2276 fieldDescriptor fd;
2277
2278 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2279 if (res == nullptr) {
2280 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2281 name_symbol->as_C_string());
2282 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2283 }
2284
2285 //fetch the field at the offset we've found
2286 int dest_offset = fd.offset();
2287
2288 return dest_offset;
2289 }
2290
2291
2292 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2293 int offset = offset_for_field(field_name, object,
2294 vmSymbols::string_signature());
2295 oop string = object->obj_field(offset);
2296 if (string == nullptr) {
2297 return nullptr;
2298 }
2299 const char* ret = java_lang_String::as_utf8_string(string);
2300 return ret;
2301 }
2302
2303 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2304 int offset =
2305 offset_for_field(field_name, object, vmSymbols::bool_signature());
2306 bool ret = (object->bool_field(offset) == JNI_TRUE);
2307 return ret;
2308 }
2309
2310 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2311 ResourceMark rm;
2312 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2313 const char* klass_name = klass->external_name();
2314
2315 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2316
2317 // one by one registration natives for exception catching
2318 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2319 CHECK_JNI_EXCEPTION(env);
2320 for (int i = 0, n = method_count; i < n; ++i) {
2321 // Skip dummy entries
2322 if (method_array[i].fnPtr == nullptr) continue;
2323 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2324 jthrowable throwable_obj = env->ExceptionOccurred();
2325 if (throwable_obj != nullptr) {
2326 env->ExceptionClear();
2327 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2328 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2329 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2330 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2331 klass_name, method_array[i].name, method_array[i].signature);
2332 }
2333 } else {
2334 // Registration failed unexpectedly.
2335 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2336 klass_name, method_array[i].name, method_array[i].signature);
2337 env->UnregisterNatives(wbclass);
2338 break;
2339 }
2340 }
2341 }
2342 }
2343
2344 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2345 // can't be in VM when we call JNI
2346 ThreadToNativeFromVM ttnfv(thread);
2347 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2348 CHECK_JNI_EXCEPTION_(env, 0);
2349 int ret;
2350 {
2351 ThreadInVMfromNative ttvfn(thread); // back to VM
2352 ret = DirectivesParser::parse_string(dir, tty);
2353 }
2354 env->ReleaseStringUTFChars(compDirect, dir);
2355 // -1 for error parsing directive. Return 0 as number of directives added.
2356 if (ret == -1) {
2357 ret = 0;
2358 }
2359 return (jint) ret;
2360 WB_END
2361
2362 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2363 DirectivesStack::pop(count);
2364 WB_END
2365
2366 // Checks that the library libfile has the noexecstack bit set.
2367 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2368 jboolean ret = false;
2369 #ifdef LINUX
2370 // Can't be in VM when we call JNI.
2371 ThreadToNativeFromVM ttnfv(thread);
2372 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2373 CHECK_JNI_EXCEPTION_(env, 0);
2374 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2375 env->ReleaseStringUTFChars(libfile, lf);
2376 #endif
2377 return ret;
2378 WB_END
2379
2380 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2381 LINUX_ONLY(return OSContainer::is_containerized();)
2382 return false;
2383 WB_END
2384
2385 // Physical memory of the host machine (including containers)
2386 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2387 LINUX_ONLY(return os::Linux::physical_memory();)
2388 return os::physical_memory();
2389 WB_END
2390
2391 // Physical swap of the host machine (including containers), Linux only.
2392 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2393 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2394 return -1; // Not used/implemented on other platforms
2395 WB_END
2396
2397 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2398 jobject o,
2399 jstring proc_cgroups,
2400 jstring proc_self_cgroup,
2401 jstring proc_self_mountinfo))
2402 jint ret = 0;
2403 #ifdef LINUX
2404 ThreadToNativeFromVM ttnfv(thread);
2405 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2406 CHECK_JNI_EXCEPTION_(env, 0);
2407 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2408 CHECK_JNI_EXCEPTION_(env, 0);
2409 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2410 CHECK_JNI_EXCEPTION_(env, 0);
2411 u1 cg_type_flags = 0;
2412 // This sets cg_type_flags
2413 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2414 ret = (jint)cg_type_flags;
2415 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2416 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2417 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2418 #endif
2419 return ret;
2420 WB_END
2421
2422 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2423 os::print_os_info(tty);
2424 WB_END
2425
2426 // Elf decoder
2427 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2428 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2429 ElfFile::_do_not_cache_elf_section = true;
2430 #endif
2431 WB_END
2432
2433 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2434 return (jlong) ResolvedMethodTable::items_count();
2435 WB_END
2436
2437 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2438 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2439 WB_END
2440
2441 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2442 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2443 // Return size in bytes.
2444 return k->size() * wordSize;
2445 WB_END
2446
2447 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2448 // It explains how the thread's priority field is used for test state coordination.
2449 //
2450 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2451 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2452 jlong tid = java_lang_Thread::thread_id(target_oop);
2453 JavaThread* target = java_lang_Thread::thread(target_oop);
2454
2455 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2456 ThreadsListHandle tlh;
2457
2458 // Look up the target thread by tid to ensure it is present
2459 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2460 if (t == nullptr) {
2461 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2462 }
2463
2464 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2465 // Allow target to terminate by boosting priority
2466 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2467
2468 // Now wait for the target to terminate
2469 while (!target->is_terminated()) {
2470 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2471 os::naked_short_sleep(0);
2472 }
2473
2474 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2475
2476 // Now release the GC inducing thread - we have to re-resolve the external oop that
2477 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2478 oop original = JNIHandles::resolve_non_null(target_handle);
2479 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2480
2481 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2482
2483 // The Java code should be creating garbage and triggering GC, which would potentially move
2484 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2485 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2486 // kick in.
2487 for (int i = 0; i < 5; i++) {
2488 oop original = JNIHandles::resolve_non_null(target_handle);
2489 oop current = t->threadObj();
2490 if (original != current) {
2491 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2492 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2493 } else {
2494 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2495 ThreadBlockInVM tbivm(thread);
2496 os::naked_short_sleep(50);
2497 }
2498 }
2499 WB_END
2500
2501 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2502 ResourceMark rm; // for verify
2503 stringStream st;
2504 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2505 frame* current_frame = fst.current();
2506 if (log) {
2507 current_frame->print_value_on(&st, nullptr);
2508 }
2509 current_frame->verify(fst.register_map());
2510 }
2511 if (log) {
2512 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2513 tty->print_raw(st.freeze());
2514 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2515 }
2516 WB_END
2517
2518 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2519 #if INCLUDE_JVMTI
2520 return JNI_TRUE;
2521 #else
2522 return JNI_FALSE;
2523 #endif
2524 WB_END
2525
2526 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2527 os::naked_short_sleep(time);
2528 WB_END
2529
2530 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2531 ThreadToNativeFromVM ttn(thread);
2532 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2533 CHECK_JNI_EXCEPTION_(env, nullptr);
2534 return info_string;
2535 WB_END
2536
2537 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2538 GCLocker::lock_critical(thread);
2539 WB_END
2540
2541 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2542 GCLocker::unlock_critical(thread);
2543 WB_END
2544
2545 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2546 if (!Continuations::enabled()) {
2547 tty->print_cr("WB error: must be Continuations::enabled()!");
2548 return JNI_FALSE;
2549 }
2550 jboolean result = false;
2551 #if INCLUDE_JVMTI
2552 if (enable) {
2553 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2554 } else {
2555 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2556 }
2557 #endif
2558 return result;
2559 WB_END
2560
2561 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2562 void* const from = (void*)addr;
2563 void* const to = (void*)(addr + size);
2564 if (from > to) {
2565 os::pretouch_memory(from, to, os::vm_page_size());
2566 }
2567 WB_END
2568
2569 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2570 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2571 WB_END
2572
2573 #define CC (char*)
2574
2575 static JNINativeMethod methods[] = {
2576 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2577 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2578 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2579 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2580 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2581 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2582 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2583 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2584 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2585 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2586 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2587 {CC"parseCommandLine0",
2588 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2589 (void*) &WB_ParseCommandLine
2590 },
2591 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2592 (void*)&WB_AddToBootstrapClassLoaderSearch},
2593 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2594 (void*)&WB_AddToSystemClassLoaderSearch},
2595 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2596 (void*)&WB_GetCompressedOopsMaxHeapSize},
2597 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2598 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2599 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2600 #if INCLUDE_CDS
2601 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2602 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2603 #endif
2604 #if INCLUDE_G1GC
2605 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2606 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2607 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2608 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2609 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2610 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2611 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2612 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2613 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2614 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2615 (void*)&WB_G1AuxiliaryMemoryUsage },
2616 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2617 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2618 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2619 #endif // INCLUDE_G1GC
2620 #if INCLUDE_PARALLELGC
2621 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2622 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2623 #endif
2624 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2625 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2626 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2627 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2628 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2629 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2630 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2631 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2632 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2633 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2634 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2635 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2636 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2637 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2638 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2639 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2640 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2641 (void*)&WB_DeoptimizeMethod },
2642 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2643 (void*)&WB_IsMethodCompiled },
2644 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2645 (void*)&WB_IsMethodCompilable},
2646 {CC"isMethodQueuedForCompilation0",
2647 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2648 {CC"isIntrinsicAvailable0",
2649 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2650 (void*)&WB_IsIntrinsicAvailable},
2651 {CC"makeMethodNotCompilable0",
2652 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2653 {CC"testSetDontInlineMethod0",
2654 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2655 {CC"getMethodCompilationLevel0",
2656 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2657 {CC"getMethodDecompileCount0",
2658 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2659 {CC"getMethodTrapCount0",
2660 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2661 (void*)&WB_GetMethodTrapCount},
2662 {CC"getDeoptCount0",
2663 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2664 {CC"getMethodEntryBci0",
2665 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2666 {CC"getCompileQueueSize",
2667 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2668 {CC"testSetForceInlineMethod0",
2669 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2670 {CC"enqueueMethodForCompilation0",
2671 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2672 {CC"enqueueInitializerForCompilation0",
2673 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2674 {CC"markMethodProfiled",
2675 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2676 {CC"clearMethodState0",
2677 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2678 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2679 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2680 {CC"matchesMethod",
2681 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2682 (void*)&WB_MatchesMethod},
2683 {CC"matchesInline",
2684 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2685 (void*)&WB_MatchesInline},
2686 {CC"shouldPrintAssembly",
2687 CC"(Ljava/lang/reflect/Executable;I)Z",
2688 (void*)&WB_ShouldPrintAssembly},
2689
2690 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2691 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2692 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2693 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2694 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2695 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2696 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2697 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2698 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2699 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2700 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2701 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2702 (void*)&WB_SetStringVMFlag},
2703 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2704 (void*)&WB_GetBooleanVMFlag},
2705 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2706 (void*)&WB_GetIntVMFlag},
2707 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2708 (void*)&WB_GetUintVMFlag},
2709 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2710 (void*)&WB_GetIntxVMFlag},
2711 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2712 (void*)&WB_GetUintxVMFlag},
2713 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2714 (void*)&WB_GetUint64VMFlag},
2715 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2716 (void*)&WB_GetSizeTVMFlag},
2717 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2718 (void*)&WB_GetDoubleVMFlag},
2719 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2720 (void*)&WB_GetStringVMFlag},
2721 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2722 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2723 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2724 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2725 {CC"allocateMetaspace",
2726 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2727 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2728 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2729 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2730 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2731 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2732 (void*)&WB_GetNMethod },
2733 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2734 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2735 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2736 {CC"getCompilationActivityMode",
2737 CC"()I", (void*)&WB_GetCompilationActivityMode},
2738 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2739 (void*)&WB_GetMethodData },
2740 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2741 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2742 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2743 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2744 (void*)&WB_DefineModule },
2745 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2746 (void*)&WB_AddModuleExports },
2747 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2748 (void*)&WB_AddReadsModule },
2749 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2750 (void*)&WB_AddModuleExportsToAllUnnamed },
2751 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2752 (void*)&WB_AddModuleExportsToAll },
2753 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2754 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2755 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2756 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2757 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2758 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2759 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2760 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2761 {CC"remapInstructionOperandFromCPCache0",
2762 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2763 {CC"encodeConstantPoolIndyIndex0",
2764 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2765 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2766 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2767 {CC"getMethodBooleanOption",
2768 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2769 (void*)&WB_GetMethodBooleaneOption},
2770 {CC"getMethodIntxOption",
2771 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2772 (void*)&WB_GetMethodIntxOption},
2773 {CC"getMethodUintxOption",
2774 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2775 (void*)&WB_GetMethodUintxOption},
2776 {CC"getMethodDoubleOption",
2777 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2778 (void*)&WB_GetMethodDoubleOption},
2779 {CC"getMethodStringOption",
2780 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2781 (void*)&WB_GetMethodStringOption},
2782 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2783 (void*)&WB_GetDefaultArchivePath},
2784 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2785 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2786 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2787 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2788 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2789 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2790 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2791 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2792 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2793 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2794 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2795 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2796 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2797 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2798 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2799
2800 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2801 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2802 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2803 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2804 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2805 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2806 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2807 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2808 (void*)&WB_AddCompilerDirective },
2809 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2810 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2811 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2812 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2813 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2814 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2815 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2816 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2817 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2818 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2819 (void*)&WB_ConcurrentGCRunTo},
2820 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2821 (void*)&WB_CheckLibSpecifiesNoexecstack},
2822 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2823 {CC"validateCgroup",
2824 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2825 (void*)&WB_ValidateCgroup },
2826 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2827 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2828 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2829 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2830 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2831 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2832 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2833
2834 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2835 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2836 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2837 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2838 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2839 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2840 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2841 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2842 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2843 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2844 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2845
2846 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2847 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2848 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2849
2850 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2851 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2852 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2853 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2854 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2855 };
2856
2857
2858 #undef CC
2859
2860 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2861 {
2862 if (WhiteBoxAPI) {
2863 // Make sure that wbclass is loaded by the null classloader
2864 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2865 Handle loader(THREAD, ik->class_loader());
2866 if (loader.is_null()) {
2867 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2868 WhiteBox::set_used();
2869 }
2870 }
2871 }
2872 JVM_END