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 return Universe::heap()->is_in(p);
414 }
415 #endif
416 GenCollectedHeap* gch = GenCollectedHeap::heap();
417 return !gch->is_in_young(p);
418 WB_END
419
420 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
421 oop p = JNIHandles::resolve(obj);
422 return p->size() * HeapWordSize;
423 WB_END
424
425 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
426 return (jlong)SpaceAlignment;
427 WB_END
428
429 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
430 return (jlong)HeapAlignment;
431 WB_END
432
433 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
434 return Universe::heap()->supports_concurrent_gc_breakpoints();
435 WB_END
436
437 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
438 ConcurrentGCBreakpoints::acquire_control();
439 WB_END
440
441 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
442 ConcurrentGCBreakpoints::release_control();
443 WB_END
444
445 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
446 ConcurrentGCBreakpoints::run_to_idle();
447 WB_END
448
449 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
450 Handle h_name(THREAD, JNIHandles::resolve(at));
451 ResourceMark rm;
452 const char* c_name = java_lang_String::as_utf8_string(h_name());
453 return ConcurrentGCBreakpoints::run_to(c_name);
454 WB_END
455
456 #if INCLUDE_G1GC
457
458 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
459 if (UseG1GC) {
460 G1CollectedHeap* g1h = G1CollectedHeap::heap();
461 oop result = JNIHandles::resolve(obj);
462 const HeapRegion* hr = g1h->heap_region_containing(result);
463 return hr->is_humongous();
464 }
465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
466 WB_END
467
468 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
469 if (UseG1GC) {
470 G1CollectedHeap* g1h = G1CollectedHeap::heap();
471 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
472 return hr->is_humongous();
473 }
474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
475 WB_END
476
477 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
478 if (UseG1GC) {
479 G1CollectedHeap* g1h = G1CollectedHeap::heap();
480 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
481 return hr->is_free();
482 }
483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
484 WB_END
485
486 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
487 if (UseG1GC) {
488 G1CollectedHeap* g1h = G1CollectedHeap::heap();
489 size_t nr = g1h->max_regions();
490 return (jlong)nr;
491 }
492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
493 WB_END
494
495 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
496 if (UseG1GC) {
497 G1CollectedHeap* g1h = G1CollectedHeap::heap();
498 size_t nr = g1h->num_free_regions();
499 return (jlong)nr;
500 }
501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
502 WB_END
503
504 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
505 if (UseG1GC) {
506 G1CollectedHeap* g1h = G1CollectedHeap::heap();
507 return g1h->concurrent_mark()->cm_thread()->in_progress();
508 }
509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
510 WB_END
511
512 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
513 if (UseG1GC) {
514 G1CollectedHeap* g1h = G1CollectedHeap::heap();
515 G1ConcurrentMark* cm = g1h->concurrent_mark();
516 return cm->completed_mark_cycles();
517 }
518 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
519 WB_END
520
521 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
522 if (UseG1GC) {
523 return (jint)HeapRegion::GrainBytes;
524 }
525 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
526 WB_END
527
528 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
529 if (UseG1GC) {
530 return G1CollectedHeap::heap()->has_uncommittable_regions();
531 }
532 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
533 WB_END
534
535 #endif // INCLUDE_G1GC
536
537 #if INCLUDE_PARALLELGC
538
539 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
540 if (UseParallelGC) {
541 return GenAlignment;
542 }
543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
544 WB_END
545
546 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
547 if (UseParallelGC) {
548 return GenAlignment;
549 }
550 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
551 WB_END
552
553 #endif // INCLUDE_PARALLELGC
554
555 #if INCLUDE_G1GC
556
557 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
558 if (UseG1GC) {
559 ResourceMark rm(THREAD);
560 G1CollectedHeap* g1h = G1CollectedHeap::heap();
561 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
562 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
563 return JNIHandles::make_local(THREAD, h());
564 }
565 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
566 WB_END
567
568 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
569 if (UseG1GC) {
570 G1NUMA* numa = G1NUMA::numa();
571 return (jint)numa->num_active_nodes();
572 }
573 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
574 WB_END
575
576 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
577 if (UseG1GC) {
578 G1NUMA* numa = G1NUMA::numa();
579 int num_node_ids = (int)numa->num_active_nodes();
580 const int* node_ids = numa->node_ids();
581
582 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
583 for (int i = 0; i < num_node_ids; i++) {
584 result->int_at_put(i, (jint)node_ids[i]);
585 }
586 return (jintArray) JNIHandles::make_local(THREAD, result);
587 }
588 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
589 WB_END
590
591 class OldRegionsLivenessClosure: public HeapRegionClosure {
592
593 private:
594 const int _liveness;
595 size_t _total_count;
596 size_t _total_memory;
597 size_t _total_memory_to_free;
598
599 public:
600 OldRegionsLivenessClosure(int liveness) :
601 _liveness(liveness),
602 _total_count(0),
603 _total_memory(0),
604 _total_memory_to_free(0) { }
605
606 size_t total_count() { return _total_count; }
607 size_t total_memory() { return _total_memory; }
608 size_t total_memory_to_free() { return _total_memory_to_free; }
609
610 bool do_heap_region(HeapRegion* r) {
611 if (r->is_old()) {
612 size_t live = r->live_bytes();
613 size_t size = r->used();
614 size_t reg_size = HeapRegion::GrainBytes;
615 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
616 _total_memory += size;
617 ++_total_count;
618 if (size == reg_size) {
619 // We don't include non-full regions since they are unlikely included in mixed gc
620 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
621 _total_memory_to_free += size - live;
622 }
623 }
624 }
625 return false;
626 }
627 };
628
629
630 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
631 if (!UseG1GC) {
632 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
633 }
634 if (liveness < 0) {
635 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
636 }
637
638 G1CollectedHeap* g1h = G1CollectedHeap::heap();
639 OldRegionsLivenessClosure rli(liveness);
640 g1h->heap_region_iterate(&rli);
641
642 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
643 result->long_at_put(0, rli.total_count());
644 result->long_at_put(1, rli.total_memory());
645 result->long_at_put(2, rli.total_memory_to_free());
646 return (jlongArray) JNIHandles::make_local(THREAD, result);
647 WB_END
648
649 #endif // INCLUDE_G1GC
650
651 // Alloc memory using the test memory type so that we can use that to see if
652 // NMT picks it up correctly
653 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
654 jlong addr = 0;
655 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
656 return addr;
657 WB_END
658
659 // Alloc memory with pseudo call stack. The test can create pseudo malloc
660 // allocation site to stress the malloc tracking.
661 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
662 address pc = (address)(size_t)pseudo_stack;
663 NativeCallStack stack(&pc, 1);
664 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
665 WB_END
666
667 // Alloc memory with pseudo call stack and specific memory type.
668 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
669 address pc = (address)(size_t)pseudo_stack;
670 NativeCallStack stack(&pc, 1);
671 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
672 WB_END
673
674 // Free the memory allocated by NMTAllocTest
675 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
676 os::free((void*)(uintptr_t)mem);
677 WB_END
678
679 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
680 jlong addr = 0;
681
682 addr = (jlong)(uintptr_t)os::reserve_memory(size);
683 MemTracker::record_virtual_memory_type((address)addr, mtTest);
684
685 return addr;
686 WB_END
687
688 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
689 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
690 MemTracker::record_virtual_memory_type((address)addr, mtTest);
691
692 return addr;
693 WB_END
694
695 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
696 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
697 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
698 WB_END
699
700 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
701 os::uncommit_memory((char *)(uintptr_t)addr, size);
702 WB_END
703
704 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
705 os::release_memory((char *)(uintptr_t)addr, size);
706 WB_END
707
708 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
709 int hash_size = MallocSiteTable::hash_buckets();
710 assert(hash_size > 0, "NMT hash_size should be > 0");
711 return (jint)hash_size;
712 WB_END
713
714 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
715 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
716 return (jlong)arena;
717 WB_END
718
719 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
720 Arena* a = (Arena*)arena;
721 delete a;
722 WB_END
723
724 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
725 Arena* a = (Arena*)arena;
726 a->Amalloc(size_t(size));
727 WB_END
728
729 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
730 assert(method != nullptr, "method should not be null");
731 ThreadToNativeFromVM ttn(thread);
732 return env->FromReflectedMethod(method);
733 }
734
735 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
736 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
737 private:
738 int _result;
739 const bool _make_not_entrant;
740 public:
741 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
742 _result(0), _make_not_entrant(make_not_entrant) { }
743 int result() const { return _result; }
744
745 void doit() {
746 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
747 if (t->has_last_Java_frame()) {
748 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
749 frame* f = fst.current();
750 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
751 Deoptimization::deoptimize(t, *f);
752 if (_make_not_entrant) {
753 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
754 assert(cm != nullptr, "sanity check");
755 cm->make_not_entrant();
756 }
757 ++_result;
758 }
759 }
760 }
761 }
762 }
763 };
764
765 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
766 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
767 VMThread::execute(&op);
768 return op.result();
769 WB_END
770
771 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
772 bool result = false;
773 if (thread->has_last_Java_frame()) {
774 ResourceMark rm(THREAD);
775 RegisterMap reg_map(thread,
776 RegisterMap::UpdateMap::include,
777 RegisterMap::ProcessFrames::include,
778 RegisterMap::WalkContinuation::skip);
779 javaVFrame *jvf = thread->last_java_vframe(®_map);
780 for (jint d = 0; d < depth && jvf != nullptr; d++) {
781 jvf = jvf->java_sender();
782 }
783 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
784 }
785 return result;
786 WB_END
787
788 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
789 DeoptimizationScope deopt_scope;
790 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
791 deopt_scope.deoptimize_marked();
792 WB_END
793
794 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
795 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
796 int result = 0;
797 CHECK_JNI_EXCEPTION_(env, result);
798
799 DeoptimizationScope deopt_scope;
800 {
801 MutexLocker mu(Compile_lock);
802 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
803 if (is_osr) {
804 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
805 } else {
806 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
807 if (mh->code() != nullptr) {
808 deopt_scope.mark(mh->code());
809 ++result;
810 }
811 }
812 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
813 }
814
815 deopt_scope.deoptimize_marked();
816
817 return result;
818 WB_END
819
820 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
821 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
822 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
823 MutexLocker mu(Compile_lock);
824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
825 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
826 if (code == nullptr) {
827 return JNI_FALSE;
828 }
829 return !code->is_marked_for_deoptimization();
830 WB_END
831
832 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
833 if (comp == nullptr) {
834 return true;
835 }
836 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
837 bool exclude = directive->ExcludeOption;
838 DirectivesStack::release(directive);
839 return exclude;
840 }
841
842 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
843 if (is_osr) {
844 return CompilationPolicy::can_be_osr_compiled(mh, level);
845 } else {
846 return CompilationPolicy::can_be_compiled(mh, level);
847 }
848 }
849
850 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
851 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
852 return false;
853 }
854 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
855 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
856 MutexLocker mu(Compile_lock);
857 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
858
859 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
860 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
861 // to exclude a compilation of 'method'.
862 if (comp_level == CompLevel_any) {
863 // Both compilers could have ExcludeOption set. Check all combinations.
864 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
865 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
866 if (excluded_c1 && excluded_c2) {
867 // Compilation of 'method' excluded by both compilers.
868 return false;
869 }
870
871 if (excluded_c1) {
872 // C1 only has ExcludeOption set: Check if compilable with C2.
873 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
874 } else if (excluded_c2) {
875 // C2 only has ExcludeOption set: Check if compilable with C1.
876 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
877 }
878 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
879 // Compilation of 'method' excluded by compiler used for 'comp_level'.
880 return false;
881 }
882
883 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
884 WB_END
885
886 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
887 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
888 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
889 MutexLocker mu(Compile_lock);
890 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
891 return mh->queued_for_compilation();
892 WB_END
893
894 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
895 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
896 return false; // Intrinsic is not available on a non-existent compilation level.
897 }
898 jmethodID method_id, compilation_context_id;
899 method_id = reflected_method_to_jmid(thread, env, method);
900 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
901 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
902
903 DirectiveSet* directive;
904 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
905 assert(comp != nullptr, "compiler not available");
906 if (compilation_context != nullptr) {
907 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
909 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
910 directive = DirectivesStack::getMatchingDirective(cch, comp);
911 } else {
912 // Calling with null matches default directive
913 directive = DirectivesStack::getDefaultDirective(comp);
914 }
915 bool result = comp->is_intrinsic_available(mh, directive);
916 DirectivesStack::release(directive);
917 return result;
918 WB_END
919
920 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
921 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
922 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
923 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
924 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
925 return (code != nullptr ? code->comp_level() : CompLevel_none);
926 WB_END
927
928 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
929 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION(env);
931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
932 if (is_osr) {
933 mh->set_not_osr_compilable("WhiteBox", comp_level);
934 } else {
935 mh->set_not_compilable("WhiteBox", comp_level);
936 }
937 WB_END
938
939 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
940 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
941 CHECK_JNI_EXCEPTION_(env, 0);
942 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
943 uint cnt = 0;
944 MethodData* mdo = mh->method_data();
945 if (mdo != nullptr) {
946 cnt = mdo->decompile_count();
947 }
948 return cnt;
949 WB_END
950
951 // Get the trap count of a method for a specific reason. If the trap count for
952 // that reason did overflow, this includes the overflow trap count of the method.
953 // If 'reason' is null, the sum of the traps for all reasons will be returned.
954 // This number includes the overflow trap count if the trap count for any reason
955 // did overflow.
956 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
957 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
958 CHECK_JNI_EXCEPTION_(env, 0);
959 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
960 uint cnt = 0;
961 MethodData* mdo = mh->method_data();
962 if (mdo != nullptr) {
963 ResourceMark rm(THREAD);
964 char* reason_str = (reason_obj == nullptr) ?
965 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
966 bool overflow = false;
967 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
968 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
969 cnt = mdo->trap_count(reason);
970 // Count in the overflow trap count on overflow
971 if (cnt == (uint)-1) {
972 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
973 }
974 break;
975 } else if (reason_str == nullptr) {
976 uint c = mdo->trap_count(reason);
977 if (c == (uint)-1) {
978 c = mdo->trap_count_limit();
979 if (!overflow) {
980 // Count overflow trap count just once
981 overflow = true;
982 c += mdo->overflow_trap_count();
983 }
984 }
985 cnt += c;
986 }
987 }
988 }
989 return cnt;
990 WB_END
991
992 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
993 if (reason_obj == nullptr && action_obj == nullptr) {
994 return Deoptimization::total_deoptimization_count();
995 }
996 ResourceMark rm(THREAD);
997 const char *reason_str = (reason_obj == nullptr) ?
998 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
999 const char *action_str = (action_obj == nullptr) ?
1000 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1001
1002 return Deoptimization::deoptimization_count(reason_str, action_str);
1003 WB_END
1004
1005 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1006 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1007 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1008 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1009 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1010 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1011 WB_END
1012
1013 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1014 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1015 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1016 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1017 bool result = mh->dont_inline();
1018 mh->set_dont_inline(value == JNI_TRUE);
1019 return result;
1020 WB_END
1021
1022 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1023 if (comp_level == CompLevel_any) {
1024 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1025 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1026 } else {
1027 return CompileBroker::queue_size(comp_level);
1028 }
1029 WB_END
1030
1031 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1032 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1033 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1034 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1035 bool result = mh->force_inline();
1036 mh->set_force_inline(value == JNI_TRUE);
1037 return result;
1038 WB_END
1039
1040 #ifdef LINUX
1041 bool WhiteBox::validate_cgroup(bool cgroups_v2_enabled,
1042 const char* controllers_file,
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, cgroups_v2_enabled, controllers_file,
1048 proc_self_cgroup,
1049 proc_self_mountinfo, cg_flags);
1050 }
1051 #endif
1052
1053 bool WhiteBox::is_asan_enabled() {
1054 #ifdef ADDRESS_SANITIZER
1055 return true;
1056 #else
1057 return false;
1058 #endif
1059 }
1060
1061 bool WhiteBox::is_ubsan_enabled() {
1062 #ifdef UNDEFINED_BEHAVIOR_SANITIZER
1063 return true;
1064 #else
1065 return false;
1066 #endif
1067 }
1068
1069 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1070 // Screen for unavailable/bad comp level or null method
1071 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1072 if (method == nullptr) {
1073 tty->print_cr("WB error: request to compile null method");
1074 return false;
1075 }
1076 if (comp_level > CompilationPolicy::highest_compile_level()) {
1077 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1078 return false;
1079 }
1080 if (comp == nullptr) {
1081 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1082 return false;
1083 }
1084
1085 // Check if compilation is blocking
1086 methodHandle mh(THREAD, method);
1087 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1088 bool is_blocking = !directive->BackgroundCompilationOption;
1089 DirectivesStack::release(directive);
1090
1091 // Compile method and check result
1092 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1093 MutexLocker mu(THREAD, Compile_lock);
1094 bool is_queued = mh->queued_for_compilation();
1095 if ((!is_blocking && is_queued) || nm != nullptr) {
1096 return true;
1097 }
1098 // Check code again because compilation may be finished before Compile_lock is acquired.
1099 if (bci == InvocationEntryBci) {
1100 CompiledMethod* code = mh->code();
1101 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1102 return true;
1103 }
1104 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1105 return true;
1106 }
1107 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1108 mh->print_short_name(tty);
1109 tty->cr();
1110 if (is_blocking && is_queued) {
1111 tty->print_cr("WB error: blocking compilation is still in queue!");
1112 }
1113 return false;
1114 }
1115
1116 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1117 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1118 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1119 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1120 WB_END
1121
1122 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1123 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1124 Method* clinit = ik->class_initializer();
1125 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1126 return false;
1127 }
1128 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1129 WB_END
1130
1131 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1132 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1133 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1134
1135 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1136 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1137 bool result = directive->PrintAssemblyOption;
1138 DirectivesStack::release(directive);
1139
1140 return result;
1141 WB_END
1142
1143 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1144 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1145 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1146
1147 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1148
1149 ResourceMark rm(THREAD);
1150 const char* error_msg = nullptr;
1151 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1152 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1153
1154 if (m == nullptr) {
1155 assert(error_msg != nullptr, "Always have an error message");
1156 tty->print_cr("Got error: %s", error_msg);
1157 return -1; // Pattern failed
1158 }
1159
1160 // Pattern works - now check if it matches
1161 int result;
1162 if (m->match(mh, InlineMatcher::force_inline)) {
1163 result = 2; // Force inline match
1164 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1165 result = 1; // Dont inline match
1166 } else {
1167 result = 0; // No match
1168 }
1169 delete m;
1170 return result;
1171 WB_END
1172
1173 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1174 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1175 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1176
1177 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1178
1179 ResourceMark rm;
1180 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1181
1182 const char* error_msg = nullptr;
1183
1184 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1185 if (m == nullptr) {
1186 assert(error_msg != nullptr, "Must have error_msg");
1187 tty->print_cr("Got error: %s", error_msg);
1188 return -1;
1189 }
1190
1191 // Pattern works - now check if it matches
1192 int result = m->matches(mh);
1193 delete m;
1194 assert(result == 0 || result == 1, "Result out of range");
1195 return result;
1196 WB_END
1197
1198 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1199 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1200 CHECK_JNI_EXCEPTION(env);
1201 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1202
1203 MethodData* mdo = mh->method_data();
1204 if (mdo == nullptr) {
1205 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1206 mdo = mh->method_data();
1207 }
1208 mdo->init();
1209 InvocationCounter* icnt = mdo->invocation_counter();
1210 InvocationCounter* bcnt = mdo->backedge_counter();
1211 // set i-counter according to CompilationPolicy::is_method_profiled
1212 icnt->set(Tier4MinInvocationThreshold);
1213 bcnt->set(Tier4CompileThreshold);
1214 WB_END
1215
1216 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1217 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1218 CHECK_JNI_EXCEPTION(env);
1219 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1220 MutexLocker mu(THREAD, Compile_lock);
1221 MethodData* mdo = mh->method_data();
1222 MethodCounters* mcs = mh->method_counters();
1223
1224 if (mdo != nullptr) {
1225 mdo->init();
1226 ResourceMark rm(THREAD);
1227 int arg_count = mdo->method()->size_of_parameters();
1228 for (int i = 0; i < arg_count; i++) {
1229 mdo->set_arg_modified(i, 0);
1230 }
1231 MutexLocker mu(THREAD, mdo->extra_data_lock());
1232 mdo->clean_method_data(/*always_clean*/true);
1233 }
1234
1235 mh->clear_is_not_c1_compilable();
1236 mh->clear_is_not_c2_compilable();
1237 mh->clear_is_not_c2_osr_compilable();
1238 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1239 if (mcs != nullptr) {
1240 mcs->clear_counters();
1241 }
1242 WB_END
1243
1244 template <typename T, int type_enum>
1245 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1246 if (name == nullptr) {
1247 return false;
1248 }
1249 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1250 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1251 CHECK_JNI_EXCEPTION_(env, false);
1252 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1253 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1254 env->ReleaseStringUTFChars(name, flag_name);
1255 return (result == JVMFlag::SUCCESS);
1256 }
1257
1258 template <typename T, int type_enum>
1259 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1260 if (name == nullptr) {
1261 return false;
1262 }
1263 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1264 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1265 CHECK_JNI_EXCEPTION_(env, false);
1266 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1267 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1268 env->ReleaseStringUTFChars(name, flag_name);
1269 return (result == JVMFlag::SUCCESS);
1270 }
1271
1272 template <typename T>
1273 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1274 ResourceMark rm(thread);
1275 jclass clazz = env->FindClass(name->as_C_string());
1276 CHECK_JNI_EXCEPTION_(env, nullptr);
1277 jmethodID methodID = env->GetStaticMethodID(clazz,
1278 vmSymbols::valueOf_name()->as_C_string(),
1279 sig->as_C_string());
1280 CHECK_JNI_EXCEPTION_(env, nullptr);
1281 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1282 CHECK_JNI_EXCEPTION_(env, nullptr);
1283 return result;
1284 }
1285
1286 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1287 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1288 }
1289 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1290 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1291 }
1292 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1293 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1294 }
1295 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1296 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1297 }*/
1298 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1299 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1300 }
1301
1302 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1303 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1304 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1305 CHECK_JNI_EXCEPTION_(env, nullptr);
1306 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1307 env->ReleaseStringUTFChars(name, flag_name);
1308 return result;
1309 }
1310
1311 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1312 const JVMFlag* flag = getVMFlag(thread, env, name);
1313 return (flag != nullptr) && flag->is_constant_in_binary();
1314 WB_END
1315
1316 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1317 const JVMFlag* flag = getVMFlag(thread, env, name);
1318 return (flag != nullptr) && flag->is_default();
1319 WB_END
1320
1321 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1322 const JVMFlag* flag = getVMFlag(thread, env, name);
1323 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1324 WB_END
1325
1326 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1327 bool result;
1328 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1329 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1330 return booleanBox(thread, env, result);
1331 }
1332 return nullptr;
1333 WB_END
1334
1335 template <typename T, int type_enum>
1336 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1337 T result;
1338 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1339 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1340 return longBox(thread, env, result);
1341 }
1342 return nullptr;
1343 }
1344
1345 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1346 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1347 WB_END
1348
1349 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1350 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1351 WB_END
1352
1353 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1354 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1355 WB_END
1356
1357 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1358 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1359 WB_END
1360
1361 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1362 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1363 WB_END
1364
1365 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1366 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1367 WB_END
1368
1369 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1370 double result;
1371 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1372 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1373 return doubleBox(thread, env, result);
1374 }
1375 return nullptr;
1376 WB_END
1377
1378 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1379 ccstr ccstrResult;
1380 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1381 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1382 jstring result = env->NewStringUTF(ccstrResult);
1383 CHECK_JNI_EXCEPTION_(env, nullptr);
1384 return result;
1385 }
1386 return nullptr;
1387 WB_END
1388
1389 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1390 bool result = value == JNI_TRUE ? true : false;
1391 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1392 WB_END
1393
1394 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1395 int result = value;
1396 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1397 WB_END
1398
1399 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1400 uint result = value;
1401 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1402 WB_END
1403
1404 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1405 intx result = value;
1406 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1407 WB_END
1408
1409 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1410 uintx result = value;
1411 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1412 WB_END
1413
1414 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1415 uint64_t result = value;
1416 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1417 WB_END
1418
1419 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1420 size_t result = value;
1421 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1422 WB_END
1423
1424 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1425 double result = value;
1426 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1427 WB_END
1428
1429 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1430 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1431 const char* ccstrValue;
1432 if (value == nullptr) {
1433 ccstrValue = nullptr;
1434 }
1435 else {
1436 ccstrValue = env->GetStringUTFChars(value, nullptr);
1437 CHECK_JNI_EXCEPTION(env);
1438 }
1439 {
1440 ccstr param = ccstrValue;
1441 ThreadInVMfromNative ttvfn(thread); // back to VM
1442 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1443 assert(param == nullptr, "old value is freed automatically and not returned");
1444 }
1445 }
1446 if (value != nullptr) {
1447 env->ReleaseStringUTFChars(value, ccstrValue);
1448 }
1449 WB_END
1450
1451 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1452 WhiteBox::compilation_locked = true;
1453 WB_END
1454
1455 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1456 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1457 WhiteBox::compilation_locked = false;
1458 mo.notify_all();
1459 WB_END
1460
1461 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1462 ResourceMark rm(THREAD);
1463 int len;
1464 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1465 return (StringTable::lookup(name, len) != nullptr);
1466 WB_END
1467
1468 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1469 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1470 Universe::heap()->collect(GCCause::_wb_full_gc);
1471 #if INCLUDE_G1GC
1472 if (UseG1GC) {
1473 // Needs to be cleared explicitly for G1
1474 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1475 }
1476 #endif // INCLUDE_G1GC
1477 WB_END
1478
1479 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1480 Universe::heap()->collect(GCCause::_wb_young_gc);
1481 WB_END
1482
1483 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1484 // static+volatile in order to force the read to happen
1485 // (not be eliminated by the compiler)
1486 static char c;
1487 static volatile char* p;
1488
1489 p = os::reserve_memory(os::vm_allocation_granularity());
1490 if (p == nullptr) {
1491 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1492 }
1493
1494 c = *p;
1495 WB_END
1496
1497 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1498 const char* features = VM_Version::features_string();
1499 ThreadToNativeFromVM ttn(thread);
1500 jstring features_string = env->NewStringUTF(features);
1501
1502 CHECK_JNI_EXCEPTION_(env, nullptr);
1503
1504 return features_string;
1505 WB_END
1506
1507 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1508 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1509 return CodeCache::get_code_heap(code)->code_blob_type();
1510 }
1511
1512 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1513 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1514 return CodeCache::get_code_heap(blob_type);
1515 }
1516
1517 struct CodeBlobStub {
1518 CodeBlobStub(const CodeBlob* blob) :
1519 name(os::strdup(blob->name())),
1520 size(blob->size()),
1521 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1522 address((jlong) blob) { }
1523 ~CodeBlobStub() { os::free((void*) name); }
1524 const char* const name;
1525 const jint size;
1526 const jint blob_type;
1527 const jlong address;
1528 };
1529
1530 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1531 ResourceMark rm;
1532 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1533 CHECK_JNI_EXCEPTION_(env, nullptr);
1534 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1535
1536 jstring name = env->NewStringUTF(cb->name);
1537 CHECK_JNI_EXCEPTION_(env, nullptr);
1538 env->SetObjectArrayElement(result, 0, name);
1539
1540 jobject obj = integerBox(thread, env, cb->size);
1541 CHECK_JNI_EXCEPTION_(env, nullptr);
1542 env->SetObjectArrayElement(result, 1, obj);
1543
1544 obj = integerBox(thread, env, cb->blob_type);
1545 CHECK_JNI_EXCEPTION_(env, nullptr);
1546 env->SetObjectArrayElement(result, 2, obj);
1547
1548 obj = longBox(thread, env, cb->address);
1549 CHECK_JNI_EXCEPTION_(env, nullptr);
1550 env->SetObjectArrayElement(result, 3, obj);
1551
1552 return result;
1553 }
1554
1555 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1556 ResourceMark rm(THREAD);
1557 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1558 CHECK_JNI_EXCEPTION_(env, nullptr);
1559 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1560 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1561 jobjectArray result = nullptr;
1562 if (code == nullptr) {
1563 return result;
1564 }
1565 int comp_level = code->comp_level();
1566 int insts_size = code->insts_size();
1567
1568 ThreadToNativeFromVM ttn(thread);
1569 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1570 CHECK_JNI_EXCEPTION_(env, nullptr);
1571 result = env->NewObjectArray(5, clazz, nullptr);
1572 if (result == nullptr) {
1573 return result;
1574 }
1575
1576 CodeBlobStub stub(code);
1577 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1578 CHECK_JNI_EXCEPTION_(env, nullptr);
1579 env->SetObjectArrayElement(result, 0, codeBlob);
1580
1581 jobject level = integerBox(thread, env, comp_level);
1582 CHECK_JNI_EXCEPTION_(env, nullptr);
1583 env->SetObjectArrayElement(result, 1, level);
1584
1585 jbyteArray insts = env->NewByteArray(insts_size);
1586 CHECK_JNI_EXCEPTION_(env, nullptr);
1587 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1588 env->SetObjectArrayElement(result, 2, insts);
1589
1590 jobject id = integerBox(thread, env, code->compile_id());
1591 CHECK_JNI_EXCEPTION_(env, nullptr);
1592 env->SetObjectArrayElement(result, 3, id);
1593
1594 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1595 CHECK_JNI_EXCEPTION_(env, nullptr);
1596 env->SetObjectArrayElement(result, 4, entry_point);
1597
1598 return result;
1599 WB_END
1600
1601 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1602 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1603 BufferBlob* blob;
1604 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1605 if (full_size < size) {
1606 full_size += align_up(size - full_size, oopSize);
1607 }
1608 {
1609 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1610 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1611 if (blob != nullptr) {
1612 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1613 }
1614 }
1615 // Track memory usage statistic after releasing CodeCache_lock
1616 MemoryService::track_code_cache_memory_usage();
1617 return blob;
1618 }
1619
1620 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1621 if (size < 0) {
1622 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1623 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1624 }
1625 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1626 WB_END
1627
1628 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1629 if (addr == 0) {
1630 return;
1631 }
1632 BufferBlob::free((BufferBlob*) addr);
1633 WB_END
1634
1635 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1636 ResourceMark rm;
1637 GrowableArray<CodeBlobStub*> blobs;
1638 {
1639 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1640 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1641 if (heap == nullptr) {
1642 return nullptr;
1643 }
1644 for (CodeBlob* cb = (CodeBlob*) heap->first();
1645 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1646 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1647 new (stub) CodeBlobStub(cb);
1648 blobs.append(stub);
1649 }
1650 }
1651 ThreadToNativeFromVM ttn(thread);
1652 jobjectArray result = nullptr;
1653 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1654 CHECK_JNI_EXCEPTION_(env, nullptr);
1655 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1656 CHECK_JNI_EXCEPTION_(env, nullptr);
1657 if (result == nullptr) {
1658 return result;
1659 }
1660 int i = 0;
1661 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1662 it != blobs.end(); ++it) {
1663 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1664 CHECK_JNI_EXCEPTION_(env, nullptr);
1665 env->SetObjectArrayElement(result, i, obj);
1666 CHECK_JNI_EXCEPTION_(env, nullptr);
1667 ++i;
1668 }
1669 return result;
1670 WB_END
1671
1672 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1673 return CompileBroker::get_compilation_activity_mode();
1674 WB_END
1675
1676 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1677 if (addr == 0) {
1678 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1679 "WB_GetCodeBlob: addr is null");
1680 }
1681 ThreadToNativeFromVM ttn(thread);
1682 CodeBlobStub stub((CodeBlob*) addr);
1683 return codeBlob2objectArray(thread, env, &stub);
1684 WB_END
1685
1686 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1687 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1688 CHECK_JNI_EXCEPTION_(env, 0);
1689 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1690 return (jlong) mh->method_data();
1691 WB_END
1692
1693 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1694 return (jlong) thread->stack_size();
1695 WB_END
1696
1697 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1698 return (jlong) thread->stack_overflow_state()->stack_available(
1699 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1700 WB_END
1701
1702
1703 int WhiteBox::array_bytes_to_length(size_t bytes) {
1704 return Array<u1>::bytes_to_length(bytes);
1705 }
1706
1707 ///////////////
1708 // MetaspaceTestContext and MetaspaceTestArena
1709 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1710 metaspace::MetaspaceTestContext* context =
1711 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1712 return (jlong)p2i(context);
1713 WB_END
1714
1715 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1716 delete (metaspace::MetaspaceTestContext*) context;
1717 WB_END
1718
1719 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1720 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1721 context0->purge_area();
1722 WB_END
1723
1724 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1725 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1726 context0->print_on(tty);
1727 WB_END
1728
1729 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1730 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1731 return context0->committed_words();
1732 WB_END
1733
1734 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1735 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1736 return context0->used_words();
1737 WB_END
1738
1739 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1740 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1741 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1742 return (jlong)p2i(context0->create_arena(type));
1743 WB_END
1744
1745 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1746 delete (metaspace::MetaspaceTestArena*) arena;
1747 WB_END
1748
1749 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1750 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1751 MetaWord* p = arena0->allocate((size_t) word_size);
1752 return (jlong)p2i(p);
1753 WB_END
1754
1755 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1756 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1757 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1758 WB_END
1759
1760 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1761 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1762 WB_END
1763
1764 //////////////
1765
1766 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1767 if (size < 0) {
1768 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1769 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1770 }
1771
1772 oop class_loader_oop = JNIHandles::resolve(class_loader);
1773 ClassLoaderData* cld = class_loader_oop != nullptr
1774 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1775 : ClassLoaderData::the_null_class_loader_data();
1776
1777 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1778
1779 return (jlong)(uintptr_t)metadata;
1780 WB_END
1781
1782 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1783 jstring version, jstring location, jobjectArray packages))
1784 Handle h_module (THREAD, JNIHandles::resolve(module));
1785 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1786 WB_END
1787
1788 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1789 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1790 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1791 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1792 WB_END
1793
1794 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1795 Handle h_module (THREAD, JNIHandles::resolve(module));
1796 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1797 WB_END
1798
1799 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1800 Handle h_module (THREAD, JNIHandles::resolve(module));
1801 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1802 WB_END
1803
1804 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1805 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1806 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1807 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1808 WB_END
1809
1810 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1811 if (inc < 0) {
1812 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1813 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1814 }
1815
1816 jlong max_size_t = (jlong) ((size_t) -1);
1817 if (inc > max_size_t) {
1818 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1819 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1820 }
1821
1822 size_t new_cap_until_GC = 0;
1823 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1824 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1825 if (!success) {
1826 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1827 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1828 "due to contention with another thread");
1829 }
1830 return (jlong) new_cap_until_GC;
1831 WB_END
1832
1833 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1834 return (jlong) MetaspaceGC::capacity_until_GC();
1835 WB_END
1836
1837 // The function is only valid when CDS is available.
1838 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1839 #if INCLUDE_CDS
1840 return (jlong)MetaspaceShared::core_region_alignment();
1841 #else
1842 ShouldNotReachHere();
1843 return 0L;
1844 #endif
1845 WB_END
1846
1847 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1848 oop obj_oop = JNIHandles::resolve(obj);
1849 return (jboolean) obj_oop->mark().has_monitor();
1850 WB_END
1851
1852 WB_ENTRY(jboolean, WB_IsAsanEnabled(JNIEnv* env))
1853 return (jboolean) WhiteBox::is_asan_enabled();
1854 WB_END
1855
1856 WB_ENTRY(jboolean, WB_IsUbsanEnabled(JNIEnv* env))
1857 return (jboolean) WhiteBox::is_ubsan_enabled();
1858 WB_END
1859
1860 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1861 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1862 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1863 WB_END
1864
1865 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1866 VM_ForceSafepoint force_safepoint_op;
1867 VMThread::execute(&force_safepoint_op);
1868 WB_END
1869
1870 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1871 nullStream dev_null;
1872 ClassLoaderStatsVMOperation force_op(&dev_null);
1873 VMThread::execute(&force_op);
1874 WB_END
1875
1876 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1877 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1878 return (jlong) ik->constants();
1879 WB_END
1880
1881 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1882 return ConstantPool::CPCACHE_INDEX_TAG;
1883 WB_END
1884
1885 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1886 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1887 ConstantPool* cp = ik->constants();
1888 if (cp->cache() == nullptr) {
1889 return -1;
1890 }
1891 return cp->cache()->length();
1892 WB_END
1893
1894 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1895 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1896 objArrayOop resolved_refs= ik->constants()->resolved_references();
1897 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1898 WB_END
1899
1900 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1901 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1902 ConstantPool* cp = ik->constants();
1903 if (cp->cache() == nullptr) {
1904 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1905 }
1906 jint cpci = index;
1907 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1908 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1909 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1910 }
1911 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1912 return cpi;
1913 WB_END
1914
1915 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1916 return ConstantPool::encode_invokedynamic_index(index);
1917 WB_END
1918
1919 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1920 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1921 ConstantPool* cp = ik->constants();
1922 if (cp->cache() == nullptr) {
1923 return -1;
1924 }
1925 return cp->resolved_indy_entries_length();
1926 WB_END
1927
1928 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1929 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1930 ConstantPool* cp = ik->constants();
1931 if (cp->cache() == nullptr) {
1932 return -1;
1933 }
1934 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1935 WB_END
1936
1937 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1938 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1939 VMThread::execute(&clear_ics);
1940 WB_END
1941
1942 template <typename T>
1943 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1944 assert(value != nullptr, "sanity");
1945 if (method == nullptr || name == nullptr) {
1946 return false;
1947 }
1948 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1949 CHECK_JNI_EXCEPTION_(env, false);
1950 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1951 // can't be in VM when we call JNI
1952 ThreadToNativeFromVM ttnfv(thread);
1953 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1954 CHECK_JNI_EXCEPTION_(env, false);
1955 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1956 env->ReleaseStringUTFChars(name, flag_name);
1957 if (option == CompileCommand::Unknown) {
1958 return false;
1959 }
1960 if (!CompilerOracle::option_matches_type(option, *value)) {
1961 return false;
1962 }
1963 return CompilerOracle::has_option_value(mh, option, *value);
1964 }
1965
1966 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1967 bool result;
1968 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1969 // can't be in VM when we call JNI
1970 ThreadToNativeFromVM ttnfv(thread);
1971 return booleanBox(thread, env, result);
1972 }
1973 return nullptr;
1974 WB_END
1975
1976 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1977 intx result;
1978 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1979 // can't be in VM when we call JNI
1980 ThreadToNativeFromVM ttnfv(thread);
1981 return longBox(thread, env, result);
1982 }
1983 return nullptr;
1984 WB_END
1985
1986 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1987 uintx result;
1988 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1989 // can't be in VM when we call JNI
1990 ThreadToNativeFromVM ttnfv(thread);
1991 return longBox(thread, env, result);
1992 }
1993 return nullptr;
1994 WB_END
1995
1996 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1997 double result;
1998 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1999 // can't be in VM when we call JNI
2000 ThreadToNativeFromVM ttnfv(thread);
2001 return doubleBox(thread, env, result);
2002 }
2003 return nullptr;
2004 WB_END
2005
2006 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2007 ccstr ccstrResult;
2008 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2009 // can't be in VM when we call JNI
2010 ThreadToNativeFromVM ttnfv(thread);
2011 jstring result = env->NewStringUTF(ccstrResult);
2012 CHECK_JNI_EXCEPTION_(env, nullptr);
2013 return result;
2014 }
2015 return nullptr;
2016 WB_END
2017
2018 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2019 const char* p = Arguments::get_default_shared_archive_path();
2020 ThreadToNativeFromVM ttn(thread);
2021 jstring path_string = env->NewStringUTF(p);
2022
2023 CHECK_JNI_EXCEPTION_(env, nullptr);
2024
2025 return path_string;
2026 WB_END
2027
2028 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2029 return UseSharedSpaces;
2030 WB_END
2031
2032 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2033 #if INCLUDE_CDS
2034 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2035 #else
2036 ShouldNotReachHere();
2037 return (jint)-1;
2038 #endif
2039 WB_END
2040
2041 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2042 #if INCLUDE_CDS
2043 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2044 #else
2045 ShouldNotReachHere();
2046 return (jint)-1;
2047 #endif
2048 WB_END
2049
2050 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2051 return FileMapInfo::memory_mapping_failed();
2052 WB_END
2053
2054 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2055 ResourceMark rm(THREAD);
2056 oop str_oop = JNIHandles::resolve(str);
2057 int length;
2058 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2059 return StringTable::lookup_shared(chars, length) == str_oop;
2060 WB_END
2061
2062 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2063 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2064 WB_END
2065
2066 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2067 return ArchiveHeapLoader::is_mapped();
2068 WB_END
2069
2070 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2071 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2072 if (!k->is_instance_klass()) {
2073 return;
2074 }
2075 InstanceKlass *ik = InstanceKlass::cast(k);
2076 ik->link_class(THREAD); // may throw verification error
2077 WB_END
2078
2079 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2080 return ArchiveHeapLoader::is_mapped();
2081 WB_END
2082
2083 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2084 #if INCLUDE_CDS
2085 return true;
2086 #else
2087 return false;
2088 #endif // INCLUDE_CDS
2089 WB_END
2090
2091 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2092 #if COMPILER2_OR_JVMCI
2093 return true;
2094 #else
2095 return false;
2096 #endif
2097 WB_END
2098
2099 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2100 #if INCLUDE_JVMCI
2101 return JVMCIGlobals::gc_supports_jvmci();
2102 #else
2103 return false;
2104 #endif
2105 WB_END
2106
2107 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2108 return HeapShared::can_write();
2109 WB_END
2110
2111
2112 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2113 #if INCLUDE_JFR
2114 return true;
2115 #else
2116 return false;
2117 #endif // INCLUDE_JFR
2118 WB_END
2119
2120 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2121 #if defined(DTRACE_ENABLED)
2122 return true;
2123 #else
2124 return false;
2125 #endif // DTRACE_ENABLED
2126 WB_END
2127
2128 #if INCLUDE_CDS
2129
2130 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2131 ResourceMark rm;
2132 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2133 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2134 return result;
2135 WB_END
2136
2137 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2138 ResourceMark rm;
2139 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2140 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2141 return result;
2142 WB_END
2143
2144 #endif // INCLUDE_CDS
2145
2146 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2147 class ReadMonitorsClosure : public HandshakeClosure {
2148 jboolean _executed;
2149
2150 void do_thread(Thread* th) {
2151 JavaThread* jt = JavaThread::cast(th);
2152 ResourceMark rm;
2153
2154 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2155
2156 if (!jt->has_last_Java_frame()) {
2157 return;
2158 }
2159 RegisterMap rmap(jt,
2160 RegisterMap::UpdateMap::include,
2161 RegisterMap::ProcessFrames::include,
2162 RegisterMap::WalkContinuation::skip);
2163 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2164 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2165 if (monitors != nullptr) {
2166 int len = monitors->length();
2167 // Walk monitors youngest to oldest
2168 for (int i = len - 1; i >= 0; i--) {
2169 MonitorInfo* mon_info = monitors->at(i);
2170 if (mon_info->eliminated()) continue;
2171 oop owner = mon_info->owner();
2172 if (owner != nullptr) {
2173 info->append(mon_info);
2174 }
2175 }
2176 }
2177 }
2178 _executed = true;
2179 }
2180
2181 public:
2182 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2183 jboolean executed() const { return _executed; }
2184 };
2185
2186 ReadMonitorsClosure rmc;
2187 if (thread_handle != nullptr) {
2188 ThreadsListHandle tlh;
2189 JavaThread* target = nullptr;
2190 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2191 if (is_alive) {
2192 Handshake::execute(&rmc, &tlh, target);
2193 }
2194 }
2195 return rmc.executed();
2196 WB_END
2197
2198 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2199 class TraceSelfClosure : public HandshakeClosure {
2200 jint _num_threads_completed;
2201
2202 void do_thread(Thread* th) {
2203 JavaThread* jt = JavaThread::cast(th);
2204 ResourceMark rm;
2205
2206 jt->print_on(tty);
2207 jt->print_stack_on(tty);
2208 tty->cr();
2209 Atomic::inc(&_num_threads_completed);
2210 }
2211
2212 public:
2213 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2214
2215 jint num_threads_completed() const { return _num_threads_completed; }
2216 };
2217 TraceSelfClosure tsc(Thread::current());
2218
2219 if (all_threads) {
2220 Handshake::execute(&tsc);
2221 } else if (thread_handle != nullptr) {
2222 ThreadsListHandle tlh;
2223 JavaThread* target = nullptr;
2224 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2225 if (is_alive) {
2226 Handshake::execute(&tsc, &tlh, target);
2227 }
2228 }
2229 return tsc.num_threads_completed();
2230 WB_END
2231
2232 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2233 class TraceSelfClosure : public AsyncHandshakeClosure {
2234 JavaThread* _self;
2235 void do_thread(Thread* th) {
2236 assert(th->is_Java_thread(), "sanity");
2237 // AsynchHandshake handshakes are only executed by target.
2238 assert(_self == th, "Must be");
2239 assert(Thread::current() == th, "Must be");
2240 JavaThread* jt = JavaThread::cast(th);
2241 ResourceMark rm;
2242 jt->print_on(tty);
2243 jt->print_stack_on(tty);
2244 tty->cr();
2245 }
2246
2247 public:
2248 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2249 };
2250 if (thread_handle != nullptr) {
2251 ThreadsListHandle tlh;
2252 JavaThread* target = nullptr;
2253 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2254 if (is_alive) {
2255 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2256 Handshake::execute(tsc, target);
2257 }
2258 }
2259 WB_END
2260
2261 static volatile int _emulated_lock = 0;
2262
2263 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2264 JavaThread* self = JavaThread::current();
2265
2266 {
2267 // Before trying to acquire the lock transition into a safepoint safe state.
2268 // Otherwise if either suspender or suspendee blocks for a safepoint
2269 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2270 // the lock without allowing the safepoint to progress.
2271 ThreadBlockInVM tbivm(self);
2272
2273 // We will deadlock here if we are 'suspender' and 'suspendee'
2274 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2275 // at the right place.
2276 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2277 assert(_emulated_lock == 1, "Must be locked");
2278
2279 // Sleep much longer in suspendee to force situation where
2280 // 'suspender' is waiting above to acquire lock.
2281 os::naked_short_sleep(suspender ? 1 : 10);
2282 }
2283 Atomic::store(&_emulated_lock, 0);
2284 WB_END
2285
2286 // Some convenience methods to deal with objects from java
2287 int WhiteBox::offset_for_field(const char* field_name, oop object,
2288 Symbol* signature_symbol) {
2289 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2290
2291 //Get the class of our object
2292 Klass* arg_klass = object->klass();
2293 //Turn it into an instance-klass
2294 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2295
2296 //Create symbols to look for in the class
2297 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2298
2299 //To be filled in with an offset of the field we're looking for
2300 fieldDescriptor fd;
2301
2302 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2303 if (res == nullptr) {
2304 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2305 name_symbol->as_C_string());
2306 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2307 }
2308
2309 //fetch the field at the offset we've found
2310 int dest_offset = fd.offset();
2311
2312 return dest_offset;
2313 }
2314
2315
2316 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2317 int offset = offset_for_field(field_name, object,
2318 vmSymbols::string_signature());
2319 oop string = object->obj_field(offset);
2320 if (string == nullptr) {
2321 return nullptr;
2322 }
2323 const char* ret = java_lang_String::as_utf8_string(string);
2324 return ret;
2325 }
2326
2327 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2328 int offset =
2329 offset_for_field(field_name, object, vmSymbols::bool_signature());
2330 bool ret = (object->bool_field(offset) == JNI_TRUE);
2331 return ret;
2332 }
2333
2334 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2335 ResourceMark rm;
2336 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2337 const char* klass_name = klass->external_name();
2338
2339 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2340
2341 // one by one registration natives for exception catching
2342 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2343 CHECK_JNI_EXCEPTION(env);
2344 for (int i = 0, n = method_count; i < n; ++i) {
2345 // Skip dummy entries
2346 if (method_array[i].fnPtr == nullptr) continue;
2347 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2348 jthrowable throwable_obj = env->ExceptionOccurred();
2349 if (throwable_obj != nullptr) {
2350 env->ExceptionClear();
2351 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2352 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2353 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2354 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2355 klass_name, method_array[i].name, method_array[i].signature);
2356 }
2357 } else {
2358 // Registration failed unexpectedly.
2359 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2360 klass_name, method_array[i].name, method_array[i].signature);
2361 env->UnregisterNatives(wbclass);
2362 break;
2363 }
2364 }
2365 }
2366 }
2367
2368 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2369 // can't be in VM when we call JNI
2370 ThreadToNativeFromVM ttnfv(thread);
2371 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2372 CHECK_JNI_EXCEPTION_(env, 0);
2373 int ret;
2374 {
2375 ThreadInVMfromNative ttvfn(thread); // back to VM
2376 ret = DirectivesParser::parse_string(dir, tty);
2377 }
2378 env->ReleaseStringUTFChars(compDirect, dir);
2379 // -1 for error parsing directive. Return 0 as number of directives added.
2380 if (ret == -1) {
2381 ret = 0;
2382 }
2383 return (jint) ret;
2384 WB_END
2385
2386 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2387 DirectivesStack::pop(count);
2388 WB_END
2389
2390 // Checks that the library libfile has the noexecstack bit set.
2391 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2392 jboolean ret = false;
2393 #ifdef LINUX
2394 // Can't be in VM when we call JNI.
2395 ThreadToNativeFromVM ttnfv(thread);
2396 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2397 CHECK_JNI_EXCEPTION_(env, 0);
2398 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2399 env->ReleaseStringUTFChars(libfile, lf);
2400 #endif
2401 return ret;
2402 WB_END
2403
2404 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2405 LINUX_ONLY(return OSContainer::is_containerized();)
2406 return false;
2407 WB_END
2408
2409 // Physical memory of the host machine (including containers)
2410 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2411 LINUX_ONLY(return os::Linux::physical_memory();)
2412 return os::physical_memory();
2413 WB_END
2414
2415 // Physical swap of the host machine (including containers), Linux only.
2416 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2417 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2418 return -1; // Not used/implemented on other platforms
2419 WB_END
2420
2421 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2422 jobject o,
2423 jboolean cgroups_v2_enabled,
2424 jstring controllers_file,
2425 jstring proc_self_cgroup,
2426 jstring proc_self_mountinfo))
2427 jint ret = 0;
2428 #ifdef LINUX
2429 ThreadToNativeFromVM ttnfv(thread);
2430 const char* c_file = env->GetStringUTFChars(controllers_file, nullptr);
2431 CHECK_JNI_EXCEPTION_(env, 0);
2432 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2433 CHECK_JNI_EXCEPTION_(env, 0);
2434 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2435 CHECK_JNI_EXCEPTION_(env, 0);
2436 u1 cg_type_flags = 0;
2437 // This sets cg_type_flags
2438 WhiteBox::validate_cgroup(cgroups_v2_enabled, c_file, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2439 ret = (jint)cg_type_flags;
2440 env->ReleaseStringUTFChars(controllers_file, c_file);
2441 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2442 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2443 #endif
2444 return ret;
2445 WB_END
2446
2447 // Available cpus of the host machine, Linux only.
2448 // Used in container testing.
2449 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2450 LINUX_ONLY(return os::Linux::active_processor_count();)
2451 return -1; // Not used/implemented on other platforms
2452 WB_END
2453
2454 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2455 os::print_os_info(tty);
2456 WB_END
2457
2458 // Elf decoder
2459 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2460 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2461 ElfFile::_do_not_cache_elf_section = true;
2462 #endif
2463 WB_END
2464
2465 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2466 return (jlong) ResolvedMethodTable::items_count();
2467 WB_END
2468
2469 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2470 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2471 WB_END
2472
2473 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2474 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2475 // Return size in bytes.
2476 return k->size() * wordSize;
2477 WB_END
2478
2479 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2480 // It explains how the thread's priority field is used for test state coordination.
2481 //
2482 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2483 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2484 jlong tid = java_lang_Thread::thread_id(target_oop);
2485 JavaThread* target = java_lang_Thread::thread(target_oop);
2486
2487 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2488 ThreadsListHandle tlh;
2489
2490 // Look up the target thread by tid to ensure it is present
2491 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2492 if (t == nullptr) {
2493 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2494 }
2495
2496 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2497 // Allow target to terminate by boosting priority
2498 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2499
2500 // Now wait for the target to terminate
2501 while (!target->is_terminated()) {
2502 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2503 os::naked_short_sleep(0);
2504 }
2505
2506 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2507
2508 // Now release the GC inducing thread - we have to re-resolve the external oop that
2509 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2510 oop original = JNIHandles::resolve_non_null(target_handle);
2511 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2512
2513 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2514
2515 // The Java code should be creating garbage and triggering GC, which would potentially move
2516 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2517 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2518 // kick in.
2519 for (int i = 0; i < 5; i++) {
2520 oop original = JNIHandles::resolve_non_null(target_handle);
2521 oop current = t->threadObj();
2522 if (original != current) {
2523 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2524 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2525 } else {
2526 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2527 ThreadBlockInVM tbivm(thread);
2528 os::naked_short_sleep(50);
2529 }
2530 }
2531 WB_END
2532
2533 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2534 ResourceMark rm; // for verify
2535 stringStream st;
2536 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2537 frame* current_frame = fst.current();
2538 if (log) {
2539 current_frame->print_value_on(&st, nullptr);
2540 }
2541 current_frame->verify(fst.register_map());
2542 }
2543 if (log) {
2544 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2545 tty->print_raw(st.freeze());
2546 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2547 }
2548 WB_END
2549
2550 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2551 #if INCLUDE_JVMTI
2552 return JNI_TRUE;
2553 #else
2554 return JNI_FALSE;
2555 #endif
2556 WB_END
2557
2558 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2559 os::naked_short_sleep(time);
2560 WB_END
2561
2562 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2563 ThreadToNativeFromVM ttn(thread);
2564 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2565 CHECK_JNI_EXCEPTION_(env, nullptr);
2566 return info_string;
2567 WB_END
2568
2569 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2570 GCLocker::lock_critical(thread);
2571 WB_END
2572
2573 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2574 GCLocker::unlock_critical(thread);
2575 WB_END
2576
2577 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2578 if (!Continuations::enabled()) {
2579 tty->print_cr("WB error: must be Continuations::enabled()!");
2580 return JNI_FALSE;
2581 }
2582 jboolean result = false;
2583 #if INCLUDE_JVMTI
2584 if (enable) {
2585 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2586 } else {
2587 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2588 }
2589 #endif
2590 return result;
2591 WB_END
2592
2593 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2594 void* const from = (void*)addr;
2595 void* const to = (void*)(addr + size);
2596 if (from > to) {
2597 os::pretouch_memory(from, to, os::vm_page_size());
2598 }
2599 WB_END
2600
2601 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2602 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2603 WB_END
2604
2605 #define CC (char*)
2606
2607 static JNINativeMethod methods[] = {
2608 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2609 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2610 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2611 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2612 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2613 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2614 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2615 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2616 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2617 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2618 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2619 {CC"parseCommandLine0",
2620 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2621 (void*) &WB_ParseCommandLine
2622 },
2623 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2624 (void*)&WB_AddToBootstrapClassLoaderSearch},
2625 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2626 (void*)&WB_AddToSystemClassLoaderSearch},
2627 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2628 (void*)&WB_GetCompressedOopsMaxHeapSize},
2629 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2630 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2631 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2632 #if INCLUDE_CDS
2633 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2634 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2635 #endif
2636 #if INCLUDE_G1GC
2637 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2638 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2639 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2640 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2641 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2642 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2643 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2644 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2645 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2646 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2647 (void*)&WB_G1AuxiliaryMemoryUsage },
2648 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2649 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2650 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2651 #endif // INCLUDE_G1GC
2652 #if INCLUDE_PARALLELGC
2653 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2654 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2655 #endif
2656 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2657 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2658 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2659 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2660 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2661 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2662 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2663 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2664 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2665 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2666 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2667 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2668 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2669 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2670 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2671 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2672 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2673 (void*)&WB_DeoptimizeMethod },
2674 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2675 (void*)&WB_IsMethodCompiled },
2676 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2677 (void*)&WB_IsMethodCompilable},
2678 {CC"isMethodQueuedForCompilation0",
2679 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2680 {CC"isIntrinsicAvailable0",
2681 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2682 (void*)&WB_IsIntrinsicAvailable},
2683 {CC"makeMethodNotCompilable0",
2684 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2685 {CC"testSetDontInlineMethod0",
2686 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2687 {CC"getMethodCompilationLevel0",
2688 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2689 {CC"getMethodDecompileCount0",
2690 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2691 {CC"getMethodTrapCount0",
2692 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2693 (void*)&WB_GetMethodTrapCount},
2694 {CC"getDeoptCount0",
2695 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2696 {CC"getMethodEntryBci0",
2697 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2698 {CC"getCompileQueueSize",
2699 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2700 {CC"testSetForceInlineMethod0",
2701 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2702 {CC"enqueueMethodForCompilation0",
2703 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2704 {CC"enqueueInitializerForCompilation0",
2705 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2706 {CC"markMethodProfiled",
2707 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2708 {CC"clearMethodState0",
2709 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2710 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2711 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2712 {CC"matchesMethod",
2713 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2714 (void*)&WB_MatchesMethod},
2715 {CC"matchesInline",
2716 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2717 (void*)&WB_MatchesInline},
2718 {CC"shouldPrintAssembly",
2719 CC"(Ljava/lang/reflect/Executable;I)Z",
2720 (void*)&WB_ShouldPrintAssembly},
2721
2722 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2723 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2724 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2725 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2726 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2727 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2728 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2729 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2730 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2731 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2732 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2733 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2734 (void*)&WB_SetStringVMFlag},
2735 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2736 (void*)&WB_GetBooleanVMFlag},
2737 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2738 (void*)&WB_GetIntVMFlag},
2739 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2740 (void*)&WB_GetUintVMFlag},
2741 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2742 (void*)&WB_GetIntxVMFlag},
2743 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2744 (void*)&WB_GetUintxVMFlag},
2745 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2746 (void*)&WB_GetUint64VMFlag},
2747 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2748 (void*)&WB_GetSizeTVMFlag},
2749 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2750 (void*)&WB_GetDoubleVMFlag},
2751 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2752 (void*)&WB_GetStringVMFlag},
2753 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2754 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2755 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2756 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2757 {CC"allocateMetaspace",
2758 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2759 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2760 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2761 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2762 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2763 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2764 (void*)&WB_GetNMethod },
2765 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2766 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2767 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2768 {CC"getCompilationActivityMode",
2769 CC"()I", (void*)&WB_GetCompilationActivityMode},
2770 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2771 (void*)&WB_GetMethodData },
2772 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2773 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2774 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2775 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2776 (void*)&WB_DefineModule },
2777 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2778 (void*)&WB_AddModuleExports },
2779 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2780 (void*)&WB_AddReadsModule },
2781 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2782 (void*)&WB_AddModuleExportsToAllUnnamed },
2783 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2784 (void*)&WB_AddModuleExportsToAll },
2785 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2786 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2787 {CC"isAsanEnabled", CC"()Z", (void*)&WB_IsAsanEnabled },
2788 {CC"isUbsanEnabled", CC"()Z", (void*)&WB_IsUbsanEnabled },
2789 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2790 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2791 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2792 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2793 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2794 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2795 {CC"remapInstructionOperandFromCPCache0",
2796 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2797 {CC"encodeConstantPoolIndyIndex0",
2798 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2799 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2800 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2801 {CC"getMethodBooleanOption",
2802 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2803 (void*)&WB_GetMethodBooleaneOption},
2804 {CC"getMethodIntxOption",
2805 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2806 (void*)&WB_GetMethodIntxOption},
2807 {CC"getMethodUintxOption",
2808 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2809 (void*)&WB_GetMethodUintxOption},
2810 {CC"getMethodDoubleOption",
2811 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2812 (void*)&WB_GetMethodDoubleOption},
2813 {CC"getMethodStringOption",
2814 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2815 (void*)&WB_GetMethodStringOption},
2816 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2817 (void*)&WB_GetDefaultArchivePath},
2818 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2819 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2820 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2821 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2822 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2823 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2824 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2825 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2826 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2827 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2828 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2829 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2830 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2831 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2832 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2833
2834 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2835 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2836 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2837 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2838 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2839 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2840 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2841 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2842 (void*)&WB_AddCompilerDirective },
2843 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2844 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2845 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2846 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2847 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2848 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2849 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2850 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2851 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2852 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2853 (void*)&WB_ConcurrentGCRunTo},
2854 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2855 (void*)&WB_CheckLibSpecifiesNoexecstack},
2856 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2857 {CC"validateCgroup",
2858 CC"(ZLjava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2859 (void*)&WB_ValidateCgroup },
2860 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2861 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2862 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
2863 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2864 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2865 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2866 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2867 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2868
2869 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2870 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2871 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2872 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2873 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2874 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2875 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2876 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2877 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2878 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2879 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2880
2881 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2882 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2883 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2884
2885 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2886 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2887 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2888 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2889 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2890 };
2891
2892
2893 #undef CC
2894
2895 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2896 {
2897 if (WhiteBoxAPI) {
2898 // Make sure that wbclass is loaded by the null classloader
2899 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2900 Handle loader(THREAD, ik->class_loader());
2901 if (loader.is_null()) {
2902 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2903 WhiteBox::set_used();
2904 }
2905 }
2906 }
2907 JVM_END