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(const char* proc_cgroups,
1042 const char* proc_self_cgroup,
1043 const char* proc_self_mountinfo,
1044 u1* cg_flags) {
1045 CgroupInfo cg_infos[CG_INFO_LENGTH];
1046 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1047 proc_self_cgroup,
1048 proc_self_mountinfo, cg_flags);
1049 }
1050 #endif
1051
1052 bool WhiteBox::is_asan_enabled() {
1053 #ifdef ADDRESS_SANITIZER
1054 return true;
1055 #else
1056 return false;
1057 #endif
1058 }
1059
1060 bool WhiteBox::is_ubsan_enabled() {
1061 #ifdef UNDEFINED_BEHAVIOR_SANITIZER
1062 return true;
1063 #else
1064 return false;
1065 #endif
1066 }
1067
1068 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1069 // Screen for unavailable/bad comp level or null method
1070 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1071 if (method == nullptr) {
1072 tty->print_cr("WB error: request to compile null method");
1073 return false;
1074 }
1075 if (comp_level > CompilationPolicy::highest_compile_level()) {
1076 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1077 return false;
1078 }
1079 if (comp == nullptr) {
1080 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1081 return false;
1082 }
1083
1084 // Check if compilation is blocking
1085 methodHandle mh(THREAD, method);
1086 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1087 bool is_blocking = !directive->BackgroundCompilationOption;
1088 DirectivesStack::release(directive);
1089
1090 // Compile method and check result
1091 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1092 MutexLocker mu(THREAD, Compile_lock);
1093 bool is_queued = mh->queued_for_compilation();
1094 if ((!is_blocking && is_queued) || nm != nullptr) {
1095 return true;
1096 }
1097 // Check code again because compilation may be finished before Compile_lock is acquired.
1098 if (bci == InvocationEntryBci) {
1099 CompiledMethod* code = mh->code();
1100 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1101 return true;
1102 }
1103 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1104 return true;
1105 }
1106 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1107 mh->print_short_name(tty);
1108 tty->cr();
1109 if (is_blocking && is_queued) {
1110 tty->print_cr("WB error: blocking compilation is still in queue!");
1111 }
1112 return false;
1113 }
1114
1115 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1116 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1117 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1118 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1119 WB_END
1120
1121 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1122 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1123 Method* clinit = ik->class_initializer();
1124 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1125 return false;
1126 }
1127 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1128 WB_END
1129
1130 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1131 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1132 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1133
1134 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1135 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1136 bool result = directive->PrintAssemblyOption;
1137 DirectivesStack::release(directive);
1138
1139 return result;
1140 WB_END
1141
1142 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1143 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1144 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1145
1146 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1147
1148 ResourceMark rm(THREAD);
1149 const char* error_msg = nullptr;
1150 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1151 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1152
1153 if (m == nullptr) {
1154 assert(error_msg != nullptr, "Always have an error message");
1155 tty->print_cr("Got error: %s", error_msg);
1156 return -1; // Pattern failed
1157 }
1158
1159 // Pattern works - now check if it matches
1160 int result;
1161 if (m->match(mh, InlineMatcher::force_inline)) {
1162 result = 2; // Force inline match
1163 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1164 result = 1; // Dont inline match
1165 } else {
1166 result = 0; // No match
1167 }
1168 delete m;
1169 return result;
1170 WB_END
1171
1172 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1173 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1174 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1175
1176 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1177
1178 ResourceMark rm;
1179 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1180
1181 const char* error_msg = nullptr;
1182
1183 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1184 if (m == nullptr) {
1185 assert(error_msg != nullptr, "Must have error_msg");
1186 tty->print_cr("Got error: %s", error_msg);
1187 return -1;
1188 }
1189
1190 // Pattern works - now check if it matches
1191 int result = m->matches(mh);
1192 delete m;
1193 assert(result == 0 || result == 1, "Result out of range");
1194 return result;
1195 WB_END
1196
1197 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1198 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1199 CHECK_JNI_EXCEPTION(env);
1200 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1201
1202 MethodData* mdo = mh->method_data();
1203 if (mdo == nullptr) {
1204 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1205 mdo = mh->method_data();
1206 }
1207 mdo->init();
1208 InvocationCounter* icnt = mdo->invocation_counter();
1209 InvocationCounter* bcnt = mdo->backedge_counter();
1210 // set i-counter according to CompilationPolicy::is_method_profiled
1211 icnt->set(Tier4MinInvocationThreshold);
1212 bcnt->set(Tier4CompileThreshold);
1213 WB_END
1214
1215 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1216 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1217 CHECK_JNI_EXCEPTION(env);
1218 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1219 MutexLocker mu(THREAD, Compile_lock);
1220 MethodData* mdo = mh->method_data();
1221 MethodCounters* mcs = mh->method_counters();
1222
1223 if (mdo != nullptr) {
1224 mdo->init();
1225 ResourceMark rm(THREAD);
1226 int arg_count = mdo->method()->size_of_parameters();
1227 for (int i = 0; i < arg_count; i++) {
1228 mdo->set_arg_modified(i, 0);
1229 }
1230 MutexLocker mu(THREAD, mdo->extra_data_lock());
1231 mdo->clean_method_data(/*always_clean*/true);
1232 }
1233
1234 mh->clear_is_not_c1_compilable();
1235 mh->clear_is_not_c2_compilable();
1236 mh->clear_is_not_c2_osr_compilable();
1237 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1238 if (mcs != nullptr) {
1239 mcs->clear_counters();
1240 }
1241 WB_END
1242
1243 template <typename T, int type_enum>
1244 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1245 if (name == nullptr) {
1246 return false;
1247 }
1248 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1249 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1250 CHECK_JNI_EXCEPTION_(env, false);
1251 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1252 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1253 env->ReleaseStringUTFChars(name, flag_name);
1254 return (result == JVMFlag::SUCCESS);
1255 }
1256
1257 template <typename T, int type_enum>
1258 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1259 if (name == nullptr) {
1260 return false;
1261 }
1262 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1263 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1264 CHECK_JNI_EXCEPTION_(env, false);
1265 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1266 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1267 env->ReleaseStringUTFChars(name, flag_name);
1268 return (result == JVMFlag::SUCCESS);
1269 }
1270
1271 template <typename T>
1272 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1273 ResourceMark rm(thread);
1274 jclass clazz = env->FindClass(name->as_C_string());
1275 CHECK_JNI_EXCEPTION_(env, nullptr);
1276 jmethodID methodID = env->GetStaticMethodID(clazz,
1277 vmSymbols::valueOf_name()->as_C_string(),
1278 sig->as_C_string());
1279 CHECK_JNI_EXCEPTION_(env, nullptr);
1280 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1281 CHECK_JNI_EXCEPTION_(env, nullptr);
1282 return result;
1283 }
1284
1285 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1286 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1287 }
1288 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1289 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1290 }
1291 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1292 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1293 }
1294 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1295 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1296 }*/
1297 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1298 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1299 }
1300
1301 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1302 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1303 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1304 CHECK_JNI_EXCEPTION_(env, nullptr);
1305 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1306 env->ReleaseStringUTFChars(name, flag_name);
1307 return result;
1308 }
1309
1310 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1311 const JVMFlag* flag = getVMFlag(thread, env, name);
1312 return (flag != nullptr) && flag->is_constant_in_binary();
1313 WB_END
1314
1315 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1316 const JVMFlag* flag = getVMFlag(thread, env, name);
1317 return (flag != nullptr) && flag->is_default();
1318 WB_END
1319
1320 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1321 const JVMFlag* flag = getVMFlag(thread, env, name);
1322 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1323 WB_END
1324
1325 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1326 bool result;
1327 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1328 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1329 return booleanBox(thread, env, result);
1330 }
1331 return nullptr;
1332 WB_END
1333
1334 template <typename T, int type_enum>
1335 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1336 T result;
1337 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1339 return longBox(thread, env, result);
1340 }
1341 return nullptr;
1342 }
1343
1344 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1345 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1346 WB_END
1347
1348 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1349 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1350 WB_END
1351
1352 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1353 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1354 WB_END
1355
1356 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1357 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1358 WB_END
1359
1360 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1361 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1362 WB_END
1363
1364 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1365 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1366 WB_END
1367
1368 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1369 double result;
1370 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1371 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1372 return doubleBox(thread, env, result);
1373 }
1374 return nullptr;
1375 WB_END
1376
1377 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1378 ccstr ccstrResult;
1379 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1380 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1381 jstring result = env->NewStringUTF(ccstrResult);
1382 CHECK_JNI_EXCEPTION_(env, nullptr);
1383 return result;
1384 }
1385 return nullptr;
1386 WB_END
1387
1388 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1389 bool result = value == JNI_TRUE ? true : false;
1390 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1391 WB_END
1392
1393 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1394 int result = value;
1395 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1396 WB_END
1397
1398 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1399 uint result = value;
1400 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1401 WB_END
1402
1403 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1404 intx result = value;
1405 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1406 WB_END
1407
1408 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1409 uintx result = value;
1410 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1411 WB_END
1412
1413 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1414 uint64_t result = value;
1415 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1416 WB_END
1417
1418 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1419 size_t result = value;
1420 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1421 WB_END
1422
1423 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1424 double result = value;
1425 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1426 WB_END
1427
1428 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1429 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1430 const char* ccstrValue;
1431 if (value == nullptr) {
1432 ccstrValue = nullptr;
1433 }
1434 else {
1435 ccstrValue = env->GetStringUTFChars(value, nullptr);
1436 CHECK_JNI_EXCEPTION(env);
1437 }
1438 {
1439 ccstr param = ccstrValue;
1440 ThreadInVMfromNative ttvfn(thread); // back to VM
1441 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1442 assert(param == nullptr, "old value is freed automatically and not returned");
1443 }
1444 }
1445 if (value != nullptr) {
1446 env->ReleaseStringUTFChars(value, ccstrValue);
1447 }
1448 WB_END
1449
1450 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1451 WhiteBox::compilation_locked = true;
1452 WB_END
1453
1454 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1455 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1456 WhiteBox::compilation_locked = false;
1457 mo.notify_all();
1458 WB_END
1459
1460 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1461 ResourceMark rm(THREAD);
1462 int len;
1463 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1464 return (StringTable::lookup(name, len) != nullptr);
1465 WB_END
1466
1467 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1468 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1469 Universe::heap()->collect(GCCause::_wb_full_gc);
1470 #if INCLUDE_G1GC
1471 if (UseG1GC) {
1472 // Needs to be cleared explicitly for G1
1473 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1474 }
1475 #endif // INCLUDE_G1GC
1476 WB_END
1477
1478 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1479 Universe::heap()->collect(GCCause::_wb_young_gc);
1480 WB_END
1481
1482 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1483 // static+volatile in order to force the read to happen
1484 // (not be eliminated by the compiler)
1485 static char c;
1486 static volatile char* p;
1487
1488 p = os::reserve_memory(os::vm_allocation_granularity());
1489 if (p == nullptr) {
1490 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1491 }
1492
1493 c = *p;
1494 WB_END
1495
1496 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1497 const char* features = VM_Version::features_string();
1498 ThreadToNativeFromVM ttn(thread);
1499 jstring features_string = env->NewStringUTF(features);
1500
1501 CHECK_JNI_EXCEPTION_(env, nullptr);
1502
1503 return features_string;
1504 WB_END
1505
1506 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1507 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1508 return CodeCache::get_code_heap(code)->code_blob_type();
1509 }
1510
1511 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1512 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1513 return CodeCache::get_code_heap(blob_type);
1514 }
1515
1516 struct CodeBlobStub {
1517 CodeBlobStub(const CodeBlob* blob) :
1518 name(os::strdup(blob->name())),
1519 size(blob->size()),
1520 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1521 address((jlong) blob) { }
1522 ~CodeBlobStub() { os::free((void*) name); }
1523 const char* const name;
1524 const jint size;
1525 const jint blob_type;
1526 const jlong address;
1527 };
1528
1529 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1530 ResourceMark rm;
1531 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1532 CHECK_JNI_EXCEPTION_(env, nullptr);
1533 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1534
1535 jstring name = env->NewStringUTF(cb->name);
1536 CHECK_JNI_EXCEPTION_(env, nullptr);
1537 env->SetObjectArrayElement(result, 0, name);
1538
1539 jobject obj = integerBox(thread, env, cb->size);
1540 CHECK_JNI_EXCEPTION_(env, nullptr);
1541 env->SetObjectArrayElement(result, 1, obj);
1542
1543 obj = integerBox(thread, env, cb->blob_type);
1544 CHECK_JNI_EXCEPTION_(env, nullptr);
1545 env->SetObjectArrayElement(result, 2, obj);
1546
1547 obj = longBox(thread, env, cb->address);
1548 CHECK_JNI_EXCEPTION_(env, nullptr);
1549 env->SetObjectArrayElement(result, 3, obj);
1550
1551 return result;
1552 }
1553
1554 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1555 ResourceMark rm(THREAD);
1556 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1557 CHECK_JNI_EXCEPTION_(env, nullptr);
1558 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1559 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1560 jobjectArray result = nullptr;
1561 if (code == nullptr) {
1562 return result;
1563 }
1564 int comp_level = code->comp_level();
1565 int insts_size = code->insts_size();
1566
1567 ThreadToNativeFromVM ttn(thread);
1568 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1569 CHECK_JNI_EXCEPTION_(env, nullptr);
1570 result = env->NewObjectArray(5, clazz, nullptr);
1571 if (result == nullptr) {
1572 return result;
1573 }
1574
1575 CodeBlobStub stub(code);
1576 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1577 CHECK_JNI_EXCEPTION_(env, nullptr);
1578 env->SetObjectArrayElement(result, 0, codeBlob);
1579
1580 jobject level = integerBox(thread, env, comp_level);
1581 CHECK_JNI_EXCEPTION_(env, nullptr);
1582 env->SetObjectArrayElement(result, 1, level);
1583
1584 jbyteArray insts = env->NewByteArray(insts_size);
1585 CHECK_JNI_EXCEPTION_(env, nullptr);
1586 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1587 env->SetObjectArrayElement(result, 2, insts);
1588
1589 jobject id = integerBox(thread, env, code->compile_id());
1590 CHECK_JNI_EXCEPTION_(env, nullptr);
1591 env->SetObjectArrayElement(result, 3, id);
1592
1593 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1594 CHECK_JNI_EXCEPTION_(env, nullptr);
1595 env->SetObjectArrayElement(result, 4, entry_point);
1596
1597 return result;
1598 WB_END
1599
1600 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1601 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1602 BufferBlob* blob;
1603 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1604 if (full_size < size) {
1605 full_size += align_up(size - full_size, oopSize);
1606 }
1607 {
1608 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1609 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1610 if (blob != nullptr) {
1611 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1612 }
1613 }
1614 // Track memory usage statistic after releasing CodeCache_lock
1615 MemoryService::track_code_cache_memory_usage();
1616 return blob;
1617 }
1618
1619 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1620 if (size < 0) {
1621 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1622 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1623 }
1624 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1625 WB_END
1626
1627 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1628 if (addr == 0) {
1629 return;
1630 }
1631 BufferBlob::free((BufferBlob*) addr);
1632 WB_END
1633
1634 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1635 ResourceMark rm;
1636 GrowableArray<CodeBlobStub*> blobs;
1637 {
1638 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1639 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1640 if (heap == nullptr) {
1641 return nullptr;
1642 }
1643 for (CodeBlob* cb = (CodeBlob*) heap->first();
1644 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1645 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1646 new (stub) CodeBlobStub(cb);
1647 blobs.append(stub);
1648 }
1649 }
1650 ThreadToNativeFromVM ttn(thread);
1651 jobjectArray result = nullptr;
1652 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1653 CHECK_JNI_EXCEPTION_(env, nullptr);
1654 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1655 CHECK_JNI_EXCEPTION_(env, nullptr);
1656 if (result == nullptr) {
1657 return result;
1658 }
1659 int i = 0;
1660 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1661 it != blobs.end(); ++it) {
1662 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1663 CHECK_JNI_EXCEPTION_(env, nullptr);
1664 env->SetObjectArrayElement(result, i, obj);
1665 CHECK_JNI_EXCEPTION_(env, nullptr);
1666 ++i;
1667 }
1668 return result;
1669 WB_END
1670
1671 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1672 return CompileBroker::get_compilation_activity_mode();
1673 WB_END
1674
1675 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1676 if (addr == 0) {
1677 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1678 "WB_GetCodeBlob: addr is null");
1679 }
1680 ThreadToNativeFromVM ttn(thread);
1681 CodeBlobStub stub((CodeBlob*) addr);
1682 return codeBlob2objectArray(thread, env, &stub);
1683 WB_END
1684
1685 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1686 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1687 CHECK_JNI_EXCEPTION_(env, 0);
1688 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1689 return (jlong) mh->method_data();
1690 WB_END
1691
1692 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1693 return (jlong) thread->stack_size();
1694 WB_END
1695
1696 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1697 return (jlong) thread->stack_overflow_state()->stack_available(
1698 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1699 WB_END
1700
1701
1702 int WhiteBox::array_bytes_to_length(size_t bytes) {
1703 return Array<u1>::bytes_to_length(bytes);
1704 }
1705
1706 ///////////////
1707 // MetaspaceTestContext and MetaspaceTestArena
1708 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1709 metaspace::MetaspaceTestContext* context =
1710 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1711 return (jlong)p2i(context);
1712 WB_END
1713
1714 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1715 delete (metaspace::MetaspaceTestContext*) context;
1716 WB_END
1717
1718 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1719 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1720 context0->purge_area();
1721 WB_END
1722
1723 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1724 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1725 context0->print_on(tty);
1726 WB_END
1727
1728 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1729 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1730 return context0->committed_words();
1731 WB_END
1732
1733 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1734 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1735 return context0->used_words();
1736 WB_END
1737
1738 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1739 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1740 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1741 return (jlong)p2i(context0->create_arena(type));
1742 WB_END
1743
1744 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1745 delete (metaspace::MetaspaceTestArena*) arena;
1746 WB_END
1747
1748 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1749 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1750 MetaWord* p = arena0->allocate((size_t) word_size);
1751 return (jlong)p2i(p);
1752 WB_END
1753
1754 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1755 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1756 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1757 WB_END
1758
1759 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1760 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1761 WB_END
1762
1763 //////////////
1764
1765 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1766 if (size < 0) {
1767 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1768 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1769 }
1770
1771 oop class_loader_oop = JNIHandles::resolve(class_loader);
1772 ClassLoaderData* cld = class_loader_oop != nullptr
1773 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1774 : ClassLoaderData::the_null_class_loader_data();
1775
1776 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1777
1778 return (jlong)(uintptr_t)metadata;
1779 WB_END
1780
1781 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1782 jstring version, jstring location, jobjectArray packages))
1783 Handle h_module (THREAD, JNIHandles::resolve(module));
1784 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1785 WB_END
1786
1787 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1788 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1789 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1790 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1791 WB_END
1792
1793 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1794 Handle h_module (THREAD, JNIHandles::resolve(module));
1795 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1796 WB_END
1797
1798 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1799 Handle h_module (THREAD, JNIHandles::resolve(module));
1800 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1801 WB_END
1802
1803 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1804 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1805 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1806 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1807 WB_END
1808
1809 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1810 if (inc < 0) {
1811 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1812 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1813 }
1814
1815 jlong max_size_t = (jlong) ((size_t) -1);
1816 if (inc > max_size_t) {
1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1818 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1819 }
1820
1821 size_t new_cap_until_GC = 0;
1822 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1823 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1824 if (!success) {
1825 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1826 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1827 "due to contention with another thread");
1828 }
1829 return (jlong) new_cap_until_GC;
1830 WB_END
1831
1832 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1833 return (jlong) MetaspaceGC::capacity_until_GC();
1834 WB_END
1835
1836 // The function is only valid when CDS is available.
1837 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1838 #if INCLUDE_CDS
1839 return (jlong)MetaspaceShared::core_region_alignment();
1840 #else
1841 ShouldNotReachHere();
1842 return 0L;
1843 #endif
1844 WB_END
1845
1846 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1847 oop obj_oop = JNIHandles::resolve(obj);
1848 return (jboolean) obj_oop->mark().has_monitor();
1849 WB_END
1850
1851 WB_ENTRY(jboolean, WB_IsAsanEnabled(JNIEnv* env))
1852 return (jboolean) WhiteBox::is_asan_enabled();
1853 WB_END
1854
1855 WB_ENTRY(jboolean, WB_IsUbsanEnabled(JNIEnv* env))
1856 return (jboolean) WhiteBox::is_ubsan_enabled();
1857 WB_END
1858
1859 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1860 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1861 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1862 WB_END
1863
1864 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1865 VM_ForceSafepoint force_safepoint_op;
1866 VMThread::execute(&force_safepoint_op);
1867 WB_END
1868
1869 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1870 nullStream dev_null;
1871 ClassLoaderStatsVMOperation force_op(&dev_null);
1872 VMThread::execute(&force_op);
1873 WB_END
1874
1875 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1876 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1877 return (jlong) ik->constants();
1878 WB_END
1879
1880 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1881 return ConstantPool::CPCACHE_INDEX_TAG;
1882 WB_END
1883
1884 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1885 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1886 ConstantPool* cp = ik->constants();
1887 if (cp->cache() == nullptr) {
1888 return -1;
1889 }
1890 return cp->cache()->length();
1891 WB_END
1892
1893 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1894 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1895 objArrayOop resolved_refs= ik->constants()->resolved_references();
1896 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1897 WB_END
1898
1899 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1900 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1901 ConstantPool* cp = ik->constants();
1902 if (cp->cache() == nullptr) {
1903 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1904 }
1905 jint cpci = index;
1906 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1907 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1908 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1909 }
1910 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1911 return cpi;
1912 WB_END
1913
1914 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1915 return ConstantPool::encode_invokedynamic_index(index);
1916 WB_END
1917
1918 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1919 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1920 ConstantPool* cp = ik->constants();
1921 if (cp->cache() == nullptr) {
1922 return -1;
1923 }
1924 return cp->resolved_indy_entries_length();
1925 WB_END
1926
1927 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1928 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1929 ConstantPool* cp = ik->constants();
1930 if (cp->cache() == nullptr) {
1931 return -1;
1932 }
1933 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1934 WB_END
1935
1936 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1937 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1938 VMThread::execute(&clear_ics);
1939 WB_END
1940
1941 template <typename T>
1942 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1943 assert(value != nullptr, "sanity");
1944 if (method == nullptr || name == nullptr) {
1945 return false;
1946 }
1947 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1948 CHECK_JNI_EXCEPTION_(env, false);
1949 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1950 // can't be in VM when we call JNI
1951 ThreadToNativeFromVM ttnfv(thread);
1952 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1953 CHECK_JNI_EXCEPTION_(env, false);
1954 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1955 env->ReleaseStringUTFChars(name, flag_name);
1956 if (option == CompileCommand::Unknown) {
1957 return false;
1958 }
1959 if (!CompilerOracle::option_matches_type(option, *value)) {
1960 return false;
1961 }
1962 return CompilerOracle::has_option_value(mh, option, *value);
1963 }
1964
1965 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1966 bool result;
1967 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1968 // can't be in VM when we call JNI
1969 ThreadToNativeFromVM ttnfv(thread);
1970 return booleanBox(thread, env, result);
1971 }
1972 return nullptr;
1973 WB_END
1974
1975 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1976 intx result;
1977 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1978 // can't be in VM when we call JNI
1979 ThreadToNativeFromVM ttnfv(thread);
1980 return longBox(thread, env, result);
1981 }
1982 return nullptr;
1983 WB_END
1984
1985 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1986 uintx result;
1987 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1988 // can't be in VM when we call JNI
1989 ThreadToNativeFromVM ttnfv(thread);
1990 return longBox(thread, env, result);
1991 }
1992 return nullptr;
1993 WB_END
1994
1995 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1996 double result;
1997 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1998 // can't be in VM when we call JNI
1999 ThreadToNativeFromVM ttnfv(thread);
2000 return doubleBox(thread, env, result);
2001 }
2002 return nullptr;
2003 WB_END
2004
2005 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2006 ccstr ccstrResult;
2007 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2008 // can't be in VM when we call JNI
2009 ThreadToNativeFromVM ttnfv(thread);
2010 jstring result = env->NewStringUTF(ccstrResult);
2011 CHECK_JNI_EXCEPTION_(env, nullptr);
2012 return result;
2013 }
2014 return nullptr;
2015 WB_END
2016
2017 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2018 const char* p = Arguments::get_default_shared_archive_path();
2019 ThreadToNativeFromVM ttn(thread);
2020 jstring path_string = env->NewStringUTF(p);
2021
2022 CHECK_JNI_EXCEPTION_(env, nullptr);
2023
2024 return path_string;
2025 WB_END
2026
2027 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2028 return UseSharedSpaces;
2029 WB_END
2030
2031 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2032 #if INCLUDE_CDS
2033 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2034 #else
2035 ShouldNotReachHere();
2036 return (jint)-1;
2037 #endif
2038 WB_END
2039
2040 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2041 #if INCLUDE_CDS
2042 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2043 #else
2044 ShouldNotReachHere();
2045 return (jint)-1;
2046 #endif
2047 WB_END
2048
2049 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2050 return FileMapInfo::memory_mapping_failed();
2051 WB_END
2052
2053 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2054 ResourceMark rm(THREAD);
2055 oop str_oop = JNIHandles::resolve(str);
2056 int length;
2057 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2058 return StringTable::lookup_shared(chars, length) == str_oop;
2059 WB_END
2060
2061 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2062 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2063 WB_END
2064
2065 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2066 return ArchiveHeapLoader::is_mapped();
2067 WB_END
2068
2069 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2070 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2071 if (!k->is_instance_klass()) {
2072 return;
2073 }
2074 InstanceKlass *ik = InstanceKlass::cast(k);
2075 ik->link_class(THREAD); // may throw verification error
2076 WB_END
2077
2078 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2079 return ArchiveHeapLoader::is_mapped();
2080 WB_END
2081
2082 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2083 #if INCLUDE_CDS
2084 return true;
2085 #else
2086 return false;
2087 #endif // INCLUDE_CDS
2088 WB_END
2089
2090 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2091 #if COMPILER2_OR_JVMCI
2092 return true;
2093 #else
2094 return false;
2095 #endif
2096 WB_END
2097
2098 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2099 #if INCLUDE_JVMCI
2100 return JVMCIGlobals::gc_supports_jvmci();
2101 #else
2102 return false;
2103 #endif
2104 WB_END
2105
2106 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2107 return HeapShared::can_write();
2108 WB_END
2109
2110
2111 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2112 #if INCLUDE_JFR
2113 return true;
2114 #else
2115 return false;
2116 #endif // INCLUDE_JFR
2117 WB_END
2118
2119 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2120 #if defined(DTRACE_ENABLED)
2121 return true;
2122 #else
2123 return false;
2124 #endif // DTRACE_ENABLED
2125 WB_END
2126
2127 #if INCLUDE_CDS
2128
2129 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2130 ResourceMark rm;
2131 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2132 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2133 return result;
2134 WB_END
2135
2136 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2137 ResourceMark rm;
2138 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2139 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2140 return result;
2141 WB_END
2142
2143 #endif // INCLUDE_CDS
2144
2145 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2146 class ReadMonitorsClosure : public HandshakeClosure {
2147 jboolean _executed;
2148
2149 void do_thread(Thread* th) {
2150 JavaThread* jt = JavaThread::cast(th);
2151 ResourceMark rm;
2152
2153 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2154
2155 if (!jt->has_last_Java_frame()) {
2156 return;
2157 }
2158 RegisterMap rmap(jt,
2159 RegisterMap::UpdateMap::include,
2160 RegisterMap::ProcessFrames::include,
2161 RegisterMap::WalkContinuation::skip);
2162 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2163 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2164 if (monitors != nullptr) {
2165 int len = monitors->length();
2166 // Walk monitors youngest to oldest
2167 for (int i = len - 1; i >= 0; i--) {
2168 MonitorInfo* mon_info = monitors->at(i);
2169 if (mon_info->eliminated()) continue;
2170 oop owner = mon_info->owner();
2171 if (owner != nullptr) {
2172 info->append(mon_info);
2173 }
2174 }
2175 }
2176 }
2177 _executed = true;
2178 }
2179
2180 public:
2181 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2182 jboolean executed() const { return _executed; }
2183 };
2184
2185 ReadMonitorsClosure rmc;
2186 if (thread_handle != nullptr) {
2187 ThreadsListHandle tlh;
2188 JavaThread* target = nullptr;
2189 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2190 if (is_alive) {
2191 Handshake::execute(&rmc, &tlh, target);
2192 }
2193 }
2194 return rmc.executed();
2195 WB_END
2196
2197 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2198 class TraceSelfClosure : public HandshakeClosure {
2199 jint _num_threads_completed;
2200
2201 void do_thread(Thread* th) {
2202 JavaThread* jt = JavaThread::cast(th);
2203 ResourceMark rm;
2204
2205 jt->print_on(tty);
2206 jt->print_stack_on(tty);
2207 tty->cr();
2208 Atomic::inc(&_num_threads_completed);
2209 }
2210
2211 public:
2212 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2213
2214 jint num_threads_completed() const { return _num_threads_completed; }
2215 };
2216 TraceSelfClosure tsc(Thread::current());
2217
2218 if (all_threads) {
2219 Handshake::execute(&tsc);
2220 } else if (thread_handle != nullptr) {
2221 ThreadsListHandle tlh;
2222 JavaThread* target = nullptr;
2223 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2224 if (is_alive) {
2225 Handshake::execute(&tsc, &tlh, target);
2226 }
2227 }
2228 return tsc.num_threads_completed();
2229 WB_END
2230
2231 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2232 class TraceSelfClosure : public AsyncHandshakeClosure {
2233 JavaThread* _self;
2234 void do_thread(Thread* th) {
2235 assert(th->is_Java_thread(), "sanity");
2236 // AsynchHandshake handshakes are only executed by target.
2237 assert(_self == th, "Must be");
2238 assert(Thread::current() == th, "Must be");
2239 JavaThread* jt = JavaThread::cast(th);
2240 ResourceMark rm;
2241 jt->print_on(tty);
2242 jt->print_stack_on(tty);
2243 tty->cr();
2244 }
2245
2246 public:
2247 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2248 };
2249 if (thread_handle != nullptr) {
2250 ThreadsListHandle tlh;
2251 JavaThread* target = nullptr;
2252 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2253 if (is_alive) {
2254 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2255 Handshake::execute(tsc, target);
2256 }
2257 }
2258 WB_END
2259
2260 static volatile int _emulated_lock = 0;
2261
2262 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2263 JavaThread* self = JavaThread::current();
2264
2265 {
2266 // Before trying to acquire the lock transition into a safepoint safe state.
2267 // Otherwise if either suspender or suspendee blocks for a safepoint
2268 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2269 // the lock without allowing the safepoint to progress.
2270 ThreadBlockInVM tbivm(self);
2271
2272 // We will deadlock here if we are 'suspender' and 'suspendee'
2273 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2274 // at the right place.
2275 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2276 assert(_emulated_lock == 1, "Must be locked");
2277
2278 // Sleep much longer in suspendee to force situation where
2279 // 'suspender' is waiting above to acquire lock.
2280 os::naked_short_sleep(suspender ? 1 : 10);
2281 }
2282 Atomic::store(&_emulated_lock, 0);
2283 WB_END
2284
2285 // Some convenience methods to deal with objects from java
2286 int WhiteBox::offset_for_field(const char* field_name, oop object,
2287 Symbol* signature_symbol) {
2288 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2289
2290 //Get the class of our object
2291 Klass* arg_klass = object->klass();
2292 //Turn it into an instance-klass
2293 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2294
2295 //Create symbols to look for in the class
2296 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2297
2298 //To be filled in with an offset of the field we're looking for
2299 fieldDescriptor fd;
2300
2301 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2302 if (res == nullptr) {
2303 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2304 name_symbol->as_C_string());
2305 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2306 }
2307
2308 //fetch the field at the offset we've found
2309 int dest_offset = fd.offset();
2310
2311 return dest_offset;
2312 }
2313
2314
2315 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2316 int offset = offset_for_field(field_name, object,
2317 vmSymbols::string_signature());
2318 oop string = object->obj_field(offset);
2319 if (string == nullptr) {
2320 return nullptr;
2321 }
2322 const char* ret = java_lang_String::as_utf8_string(string);
2323 return ret;
2324 }
2325
2326 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2327 int offset =
2328 offset_for_field(field_name, object, vmSymbols::bool_signature());
2329 bool ret = (object->bool_field(offset) == JNI_TRUE);
2330 return ret;
2331 }
2332
2333 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2334 ResourceMark rm;
2335 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2336 const char* klass_name = klass->external_name();
2337
2338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2339
2340 // one by one registration natives for exception catching
2341 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2342 CHECK_JNI_EXCEPTION(env);
2343 for (int i = 0, n = method_count; i < n; ++i) {
2344 // Skip dummy entries
2345 if (method_array[i].fnPtr == nullptr) continue;
2346 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2347 jthrowable throwable_obj = env->ExceptionOccurred();
2348 if (throwable_obj != nullptr) {
2349 env->ExceptionClear();
2350 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2351 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2352 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2353 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2354 klass_name, method_array[i].name, method_array[i].signature);
2355 }
2356 } else {
2357 // Registration failed unexpectedly.
2358 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2359 klass_name, method_array[i].name, method_array[i].signature);
2360 env->UnregisterNatives(wbclass);
2361 break;
2362 }
2363 }
2364 }
2365 }
2366
2367 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2368 // can't be in VM when we call JNI
2369 ThreadToNativeFromVM ttnfv(thread);
2370 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2371 CHECK_JNI_EXCEPTION_(env, 0);
2372 int ret;
2373 {
2374 ThreadInVMfromNative ttvfn(thread); // back to VM
2375 ret = DirectivesParser::parse_string(dir, tty);
2376 }
2377 env->ReleaseStringUTFChars(compDirect, dir);
2378 // -1 for error parsing directive. Return 0 as number of directives added.
2379 if (ret == -1) {
2380 ret = 0;
2381 }
2382 return (jint) ret;
2383 WB_END
2384
2385 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2386 DirectivesStack::pop(count);
2387 WB_END
2388
2389 // Checks that the library libfile has the noexecstack bit set.
2390 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2391 jboolean ret = false;
2392 #ifdef LINUX
2393 // Can't be in VM when we call JNI.
2394 ThreadToNativeFromVM ttnfv(thread);
2395 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2396 CHECK_JNI_EXCEPTION_(env, 0);
2397 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2398 env->ReleaseStringUTFChars(libfile, lf);
2399 #endif
2400 return ret;
2401 WB_END
2402
2403 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2404 LINUX_ONLY(return OSContainer::is_containerized();)
2405 return false;
2406 WB_END
2407
2408 // Physical memory of the host machine (including containers)
2409 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2410 LINUX_ONLY(return os::Linux::physical_memory();)
2411 return os::physical_memory();
2412 WB_END
2413
2414 // Physical swap of the host machine (including containers), Linux only.
2415 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2416 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2417 return -1; // Not used/implemented on other platforms
2418 WB_END
2419
2420 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2421 jobject o,
2422 jstring proc_cgroups,
2423 jstring proc_self_cgroup,
2424 jstring proc_self_mountinfo))
2425 jint ret = 0;
2426 #ifdef LINUX
2427 ThreadToNativeFromVM ttnfv(thread);
2428 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2429 CHECK_JNI_EXCEPTION_(env, 0);
2430 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2431 CHECK_JNI_EXCEPTION_(env, 0);
2432 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2433 CHECK_JNI_EXCEPTION_(env, 0);
2434 u1 cg_type_flags = 0;
2435 // This sets cg_type_flags
2436 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2437 ret = (jint)cg_type_flags;
2438 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2439 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2440 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2441 #endif
2442 return ret;
2443 WB_END
2444
2445 // Available cpus of the host machine, Linux only.
2446 // Used in container testing.
2447 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2448 LINUX_ONLY(return os::Linux::active_processor_count();)
2449 return -1; // Not used/implemented on other platforms
2450 WB_END
2451
2452 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2453 os::print_os_info(tty);
2454 WB_END
2455
2456 // Elf decoder
2457 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2458 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2459 ElfFile::_do_not_cache_elf_section = true;
2460 #endif
2461 WB_END
2462
2463 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2464 return (jlong) ResolvedMethodTable::items_count();
2465 WB_END
2466
2467 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2468 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2469 WB_END
2470
2471 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2472 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2473 // Return size in bytes.
2474 return k->size() * wordSize;
2475 WB_END
2476
2477 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2478 // It explains how the thread's priority field is used for test state coordination.
2479 //
2480 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2481 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2482 jlong tid = java_lang_Thread::thread_id(target_oop);
2483 JavaThread* target = java_lang_Thread::thread(target_oop);
2484
2485 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2486 ThreadsListHandle tlh;
2487
2488 // Look up the target thread by tid to ensure it is present
2489 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2490 if (t == nullptr) {
2491 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2492 }
2493
2494 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2495 // Allow target to terminate by boosting priority
2496 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2497
2498 // Now wait for the target to terminate
2499 while (!target->is_terminated()) {
2500 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2501 os::naked_short_sleep(0);
2502 }
2503
2504 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2505
2506 // Now release the GC inducing thread - we have to re-resolve the external oop that
2507 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2508 oop original = JNIHandles::resolve_non_null(target_handle);
2509 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2510
2511 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2512
2513 // The Java code should be creating garbage and triggering GC, which would potentially move
2514 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2515 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2516 // kick in.
2517 for (int i = 0; i < 5; i++) {
2518 oop original = JNIHandles::resolve_non_null(target_handle);
2519 oop current = t->threadObj();
2520 if (original != current) {
2521 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2522 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2523 } else {
2524 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2525 ThreadBlockInVM tbivm(thread);
2526 os::naked_short_sleep(50);
2527 }
2528 }
2529 WB_END
2530
2531 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2532 ResourceMark rm; // for verify
2533 stringStream st;
2534 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2535 frame* current_frame = fst.current();
2536 if (log) {
2537 current_frame->print_value_on(&st, nullptr);
2538 }
2539 current_frame->verify(fst.register_map());
2540 }
2541 if (log) {
2542 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2543 tty->print_raw(st.freeze());
2544 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2545 }
2546 WB_END
2547
2548 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2549 #if INCLUDE_JVMTI
2550 return JNI_TRUE;
2551 #else
2552 return JNI_FALSE;
2553 #endif
2554 WB_END
2555
2556 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2557 os::naked_short_sleep(time);
2558 WB_END
2559
2560 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2561 ThreadToNativeFromVM ttn(thread);
2562 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2563 CHECK_JNI_EXCEPTION_(env, nullptr);
2564 return info_string;
2565 WB_END
2566
2567 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2568 GCLocker::lock_critical(thread);
2569 WB_END
2570
2571 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2572 GCLocker::unlock_critical(thread);
2573 WB_END
2574
2575 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2576 if (!Continuations::enabled()) {
2577 tty->print_cr("WB error: must be Continuations::enabled()!");
2578 return JNI_FALSE;
2579 }
2580 jboolean result = false;
2581 #if INCLUDE_JVMTI
2582 if (enable) {
2583 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2584 } else {
2585 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2586 }
2587 #endif
2588 return result;
2589 WB_END
2590
2591 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2592 void* const from = (void*)addr;
2593 void* const to = (void*)(addr + size);
2594 if (from > to) {
2595 os::pretouch_memory(from, to, os::vm_page_size());
2596 }
2597 WB_END
2598
2599 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2600 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2601 WB_END
2602
2603 #define CC (char*)
2604
2605 static JNINativeMethod methods[] = {
2606 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2607 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2608 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2609 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2610 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2611 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2612 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2613 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2614 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2615 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2616 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2617 {CC"parseCommandLine0",
2618 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2619 (void*) &WB_ParseCommandLine
2620 },
2621 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2622 (void*)&WB_AddToBootstrapClassLoaderSearch},
2623 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2624 (void*)&WB_AddToSystemClassLoaderSearch},
2625 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2626 (void*)&WB_GetCompressedOopsMaxHeapSize},
2627 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2628 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2629 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2630 #if INCLUDE_CDS
2631 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2632 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2633 #endif
2634 #if INCLUDE_G1GC
2635 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2636 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2637 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2638 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2639 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2640 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2641 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2642 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2643 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2644 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2645 (void*)&WB_G1AuxiliaryMemoryUsage },
2646 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2647 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2648 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2649 #endif // INCLUDE_G1GC
2650 #if INCLUDE_PARALLELGC
2651 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2652 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2653 #endif
2654 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2655 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2656 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2657 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2658 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2659 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2660 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2661 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2662 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2663 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2664 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2665 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2666 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2667 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2668 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2669 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2670 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2671 (void*)&WB_DeoptimizeMethod },
2672 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2673 (void*)&WB_IsMethodCompiled },
2674 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2675 (void*)&WB_IsMethodCompilable},
2676 {CC"isMethodQueuedForCompilation0",
2677 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2678 {CC"isIntrinsicAvailable0",
2679 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2680 (void*)&WB_IsIntrinsicAvailable},
2681 {CC"makeMethodNotCompilable0",
2682 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2683 {CC"testSetDontInlineMethod0",
2684 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2685 {CC"getMethodCompilationLevel0",
2686 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2687 {CC"getMethodDecompileCount0",
2688 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2689 {CC"getMethodTrapCount0",
2690 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2691 (void*)&WB_GetMethodTrapCount},
2692 {CC"getDeoptCount0",
2693 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2694 {CC"getMethodEntryBci0",
2695 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2696 {CC"getCompileQueueSize",
2697 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2698 {CC"testSetForceInlineMethod0",
2699 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2700 {CC"enqueueMethodForCompilation0",
2701 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2702 {CC"enqueueInitializerForCompilation0",
2703 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2704 {CC"markMethodProfiled",
2705 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2706 {CC"clearMethodState0",
2707 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2708 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2709 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2710 {CC"matchesMethod",
2711 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2712 (void*)&WB_MatchesMethod},
2713 {CC"matchesInline",
2714 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2715 (void*)&WB_MatchesInline},
2716 {CC"shouldPrintAssembly",
2717 CC"(Ljava/lang/reflect/Executable;I)Z",
2718 (void*)&WB_ShouldPrintAssembly},
2719
2720 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2721 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2722 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2723 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2724 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2725 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2726 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2727 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2728 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2729 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2730 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2731 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2732 (void*)&WB_SetStringVMFlag},
2733 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2734 (void*)&WB_GetBooleanVMFlag},
2735 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2736 (void*)&WB_GetIntVMFlag},
2737 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2738 (void*)&WB_GetUintVMFlag},
2739 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2740 (void*)&WB_GetIntxVMFlag},
2741 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2742 (void*)&WB_GetUintxVMFlag},
2743 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2744 (void*)&WB_GetUint64VMFlag},
2745 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2746 (void*)&WB_GetSizeTVMFlag},
2747 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2748 (void*)&WB_GetDoubleVMFlag},
2749 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2750 (void*)&WB_GetStringVMFlag},
2751 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2752 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2753 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2754 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2755 {CC"allocateMetaspace",
2756 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2757 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2758 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2759 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2760 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2761 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2762 (void*)&WB_GetNMethod },
2763 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2764 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2765 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2766 {CC"getCompilationActivityMode",
2767 CC"()I", (void*)&WB_GetCompilationActivityMode},
2768 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2769 (void*)&WB_GetMethodData },
2770 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2771 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2772 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2773 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2774 (void*)&WB_DefineModule },
2775 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2776 (void*)&WB_AddModuleExports },
2777 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2778 (void*)&WB_AddReadsModule },
2779 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2780 (void*)&WB_AddModuleExportsToAllUnnamed },
2781 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2782 (void*)&WB_AddModuleExportsToAll },
2783 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2784 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2785 {CC"isAsanEnabled", CC"()Z", (void*)&WB_IsAsanEnabled },
2786 {CC"isUbsanEnabled", CC"()Z", (void*)&WB_IsUbsanEnabled },
2787 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2788 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2789 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2790 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2791 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2792 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2793 {CC"remapInstructionOperandFromCPCache0",
2794 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2795 {CC"encodeConstantPoolIndyIndex0",
2796 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2797 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2798 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2799 {CC"getMethodBooleanOption",
2800 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2801 (void*)&WB_GetMethodBooleaneOption},
2802 {CC"getMethodIntxOption",
2803 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2804 (void*)&WB_GetMethodIntxOption},
2805 {CC"getMethodUintxOption",
2806 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2807 (void*)&WB_GetMethodUintxOption},
2808 {CC"getMethodDoubleOption",
2809 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2810 (void*)&WB_GetMethodDoubleOption},
2811 {CC"getMethodStringOption",
2812 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2813 (void*)&WB_GetMethodStringOption},
2814 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2815 (void*)&WB_GetDefaultArchivePath},
2816 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2817 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2818 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2819 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2820 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2821 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2822 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2823 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2824 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2825 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2826 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2827 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2828 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2829 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2830 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2831
2832 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2833 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2834 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2835 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2836 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2837 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2838 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2839 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2840 (void*)&WB_AddCompilerDirective },
2841 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2842 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2843 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2844 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2845 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2846 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2847 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2848 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2849 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2850 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2851 (void*)&WB_ConcurrentGCRunTo},
2852 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2853 (void*)&WB_CheckLibSpecifiesNoexecstack},
2854 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2855 {CC"validateCgroup",
2856 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2857 (void*)&WB_ValidateCgroup },
2858 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2859 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2860 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
2861 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2862 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2863 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2864 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2865 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2866
2867 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2868 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2869 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2870 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2871 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2872 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2873 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2874 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2875 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2876 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2877 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2878
2879 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2880 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2881 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2882
2883 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2884 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2885 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2886 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2887 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2888 };
2889
2890
2891 #undef CC
2892
2893 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2894 {
2895 if (WhiteBoxAPI) {
2896 // Make sure that wbclass is loaded by the null classloader
2897 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2898 Handle loader(THREAD, ik->class_loader());
2899 if (loader.is_null()) {
2900 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2901 WhiteBox::set_used();
2902 }
2903 }
2904 }
2905 JVM_END