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/lockStack.hpp"
86 #include "runtime/os.hpp"
87 #include "runtime/stackFrameStream.inline.hpp"
88 #include "runtime/synchronizer.hpp"
89 #include "runtime/threadSMR.hpp"
90 #include "runtime/vframe.hpp"
91 #include "runtime/vm_version.hpp"
92 #include "services/mallocSiteTable.hpp"
93 #include "services/memoryService.hpp"
94 #include "services/memTracker.hpp"
95 #include "utilities/align.hpp"
96 #include "utilities/debug.hpp"
97 #include "utilities/elfFile.hpp"
98 #include "utilities/exceptions.hpp"
99 #include "utilities/macros.hpp"
100 #include "utilities/nativeCallStack.hpp"
101 #include "utilities/ostream.hpp"
102 #if INCLUDE_G1GC
103 #include "gc/g1/g1Arguments.hpp"
104 #include "gc/g1/g1CollectedHeap.inline.hpp"
105 #include "gc/g1/g1ConcurrentMark.hpp"
106 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
107 #include "gc/g1/heapRegionManager.hpp"
108 #include "gc/g1/heapRegionRemSet.inline.hpp"
109 #endif // INCLUDE_G1GC
110 #if INCLUDE_PARALLELGC
111 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
112 #endif // INCLUDE_PARALLELGC
113 #if INCLUDE_ZGC
114 #include "gc/z/zAddress.inline.hpp"
115 #endif // INCLUDE_ZGC
116 #if INCLUDE_JVMCI
117 #include "jvmci/jvmciEnv.hpp"
118 #include "jvmci/jvmciRuntime.hpp"
119 #endif
120 #ifdef LINUX
121 #include "os_linux.hpp"
122 #include "osContainer_linux.hpp"
123 #include "cgroupSubsystem_linux.hpp"
124 #endif
125
126 #define CHECK_JNI_EXCEPTION_(env, value) \
127 do { \
128 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
129 THREAD->clear_pending_jni_exception_check(); \
130 if (HAS_PENDING_EXCEPTION) { \
131 return(value); \
132 } \
133 } while (0)
134
135 #define CHECK_JNI_EXCEPTION(env) \
136 do { \
137 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
138 THREAD->clear_pending_jni_exception_check(); \
139 if (HAS_PENDING_EXCEPTION) { \
140 return; \
141 } \
142 } while (0)
143
144 bool WhiteBox::_used = false;
145 volatile bool WhiteBox::compilation_locked = false;
146
147 class VM_WhiteBoxOperation : public VM_Operation {
148 public:
149 VM_WhiteBoxOperation() { }
150 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
151 bool allow_nested_vm_operations() const { return true; }
152 };
153
154
155 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
156 return (jlong)(void*)JNIHandles::resolve(obj);
157 WB_END
158
159 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
160 return heapOopSize;
161 WB_END
162
163 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
164 return (jint)os::vm_page_size();
165 WB_END
166
167 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
168 return os::vm_allocation_granularity();
169 WB_END
170
171 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
172 return os::large_page_size();
173 WB_END
174
175 class WBIsKlassAliveClosure : public LockedClassesDo {
176 Symbol* _name;
177 int _count;
178 public:
179 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
180
181 void do_klass(Klass* k) {
182 Symbol* ksym = k->name();
183 if (ksym->fast_compare(_name) == 0) {
184 _count++;
185 } else if (k->is_instance_klass()) {
186 // Need special handling for hidden classes because the JVM
187 // appends "+<hex-address>" to hidden class names.
188 InstanceKlass *ik = InstanceKlass::cast(k);
189 if (ik->is_hidden()) {
190 ResourceMark rm;
191 char* k_name = ksym->as_C_string();
192 // Find the first '+' char and truncate the string at that point.
193 // NOTE: This will not work correctly if the original hidden class
194 // name contains a '+'.
195 char* plus_char = strchr(k_name, '+');
196 if (plus_char != nullptr) {
197 *plus_char = 0;
198 char* c_name = _name->as_C_string();
199 if (strcmp(c_name, k_name) == 0) {
200 _count++;
201 }
202 }
203 }
204 }
205 }
206
207 int count() const {
208 return _count;
209 }
210 };
211
212 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
213 oop h_name = JNIHandles::resolve(name);
214 if (h_name == nullptr) {
215 return 0;
216 }
217 Symbol* sym = java_lang_String::as_symbol(h_name);
218 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
219
220 WBIsKlassAliveClosure closure(sym);
221 ClassLoaderDataGraph::classes_do(&closure);
222
223 // Return the count of alive classes with this name.
224 return closure.count();
225 WB_END
226
227 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
228 oop h_name = JNIHandles::resolve(name);
229 if (h_name == nullptr) {
230 return 0;
231 }
232 Symbol* sym = java_lang_String::as_symbol(h_name);
233 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
234 return (jint)sym->refcount();
235 WB_END
236
237
238 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
239 #if INCLUDE_JVMTI
240 ResourceMark rm;
241 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
242 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
243 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
244 assert(err == JVMTI_ERROR_NONE, "must not fail");
245 #endif
246 }
247 WB_END
248
249 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
250 #if INCLUDE_JVMTI
251 ResourceMark rm;
252 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
253 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
254 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
255 assert(err == JVMTI_ERROR_NONE, "must not fail");
256 #endif
257 }
258 WB_END
259
260
261 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
262 return (jlong)Arguments::max_heap_for_compressed_oops();
263 }
264 WB_END
265
266 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
267 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
268 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
269 MinHeapSize,
270 InitialHeapSize,
271 MaxHeapSize,
272 SpaceAlignment,
273 HeapAlignment);
274 }
275 WB_END
276
277 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
278 size_t granularity = os::vm_allocation_granularity();
279 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
280 VirtualSpace vs;
281 vs.initialize(rhs, 50 * granularity);
282
283 // Check if constraints are complied
284 if (!( UseCompressedOops && rhs.base() != nullptr &&
285 CompressedOops::base() != nullptr &&
286 CompressedOops::use_implicit_null_checks() )) {
287 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
288 "\tUseCompressedOops is %d\n"
289 "\trhs.base() is " PTR_FORMAT "\n"
290 "\tCompressedOops::base() is " PTR_FORMAT "\n"
291 "\tCompressedOops::use_implicit_null_checks() is %d",
292 UseCompressedOops,
293 p2i(rhs.base()),
294 p2i(CompressedOops::base()),
295 CompressedOops::use_implicit_null_checks());
296 return;
297 }
298 tty->print_cr("Reading from no access area... ");
299 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
300 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
301 WB_END
302
303 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
304 size_t magnitude, size_t iterations) {
305 size_t granularity = os::vm_allocation_granularity();
306 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
307 VirtualSpace vs;
308 if (!vs.initialize(rhs, 0)) {
309 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
310 return 3;
311 }
312
313 int seed = os::random();
314 tty->print_cr("Random seed is %d", seed);
315
316 for (size_t i = 0; i < iterations; i++) {
317
318 // Whether we will shrink or grow
319 bool shrink = os::random() % 2L == 0;
320
321 // Get random delta to resize virtual space
322 size_t delta = (size_t)os::random() % magnitude;
323
324 // If we are about to shrink virtual space below zero, then expand instead
325 if (shrink && vs.committed_size() < delta) {
326 shrink = false;
327 }
328
329 // Resizing by delta
330 if (shrink) {
331 vs.shrink_by(delta);
332 } else {
333 // If expanding fails expand_by will silently return false
334 vs.expand_by(delta, true);
335 }
336 }
337 return 0;
338 }
339
340 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
341 jlong reserved_space_size, jlong magnitude, jlong iterations))
342 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
343 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
344 iterations);
345 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
346 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
347 return 1;
348 }
349
350 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
351 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
352 if (sizeof(size_t) < sizeof(jlong)) {
353 jlong size_t_max_value = (jlong)SIZE_MAX;
354 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
355 || iterations > size_t_max_value) {
356 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
357 return 2;
358 }
359 }
360
361 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
362 (size_t) magnitude, (size_t) iterations);
363 WB_END
364
365 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
366 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
367 WB_END
368
369 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
370 #if INCLUDE_JVMCI
371 if (EnableJVMCI) {
372 // Enter the JVMCI env that will be used by the CompileBroker.
373 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
374 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
375 }
376 #endif
377 return false;
378 WB_END
379
380 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
381 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
382 WB_END
383
384 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
385 return GCConfig::is_gc_selected_ergonomically();
386 WB_END
387
388 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
389 oop p = JNIHandles::resolve(obj);
390 #if INCLUDE_G1GC
391 if (UseG1GC) {
392 G1CollectedHeap* g1h = G1CollectedHeap::heap();
393 const HeapRegion* hr = g1h->heap_region_containing(p);
394 return !(hr->is_young());
395 }
396 #endif
397 #if INCLUDE_PARALLELGC
398 if (UseParallelGC) {
399 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
400 return !psh->is_in_young(p);
401 }
402 #endif
403 #if INCLUDE_ZGC
404 if (UseZGC) {
405 if (ZGenerational) {
406 return ZHeap::heap()->is_old(to_zaddress(p));
407 } else {
408 return Universe::heap()->is_in(p);
409 }
410 }
411 #endif
412 #if INCLUDE_SHENANDOAHGC
413 if (UseShenandoahGC) {
414 return Universe::heap()->is_in(p);
415 }
416 #endif
417 GenCollectedHeap* gch = GenCollectedHeap::heap();
418 return !gch->is_in_young(p);
419 WB_END
420
421 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
422 oop p = JNIHandles::resolve(obj);
423 return p->size() * HeapWordSize;
424 WB_END
425
426 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
427 return (jlong)SpaceAlignment;
428 WB_END
429
430 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
431 return (jlong)HeapAlignment;
432 WB_END
433
434 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
435 return Universe::heap()->supports_concurrent_gc_breakpoints();
436 WB_END
437
438 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
439 ConcurrentGCBreakpoints::acquire_control();
440 WB_END
441
442 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
443 ConcurrentGCBreakpoints::release_control();
444 WB_END
445
446 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
447 ConcurrentGCBreakpoints::run_to_idle();
448 WB_END
449
450 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
451 Handle h_name(THREAD, JNIHandles::resolve(at));
452 ResourceMark rm;
453 const char* c_name = java_lang_String::as_utf8_string(h_name());
454 return ConcurrentGCBreakpoints::run_to(c_name);
455 WB_END
456
457 #if INCLUDE_G1GC
458
459 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
460 if (UseG1GC) {
461 G1CollectedHeap* g1h = G1CollectedHeap::heap();
462 oop result = JNIHandles::resolve(obj);
463 const HeapRegion* hr = g1h->heap_region_containing(result);
464 return hr->is_humongous();
465 }
466 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
467 WB_END
468
469 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
470 if (UseG1GC) {
471 G1CollectedHeap* g1h = G1CollectedHeap::heap();
472 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
473 return hr->is_humongous();
474 }
475 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
476 WB_END
477
478 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
479 if (UseG1GC) {
480 G1CollectedHeap* g1h = G1CollectedHeap::heap();
481 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
482 return hr->is_free();
483 }
484 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
485 WB_END
486
487 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
488 if (UseG1GC) {
489 G1CollectedHeap* g1h = G1CollectedHeap::heap();
490 size_t nr = g1h->max_regions();
491 return (jlong)nr;
492 }
493 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
494 WB_END
495
496 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
497 if (UseG1GC) {
498 G1CollectedHeap* g1h = G1CollectedHeap::heap();
499 size_t nr = g1h->num_free_regions();
500 return (jlong)nr;
501 }
502 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
503 WB_END
504
505 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
506 if (UseG1GC) {
507 G1CollectedHeap* g1h = G1CollectedHeap::heap();
508 return g1h->concurrent_mark()->cm_thread()->in_progress();
509 }
510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
511 WB_END
512
513 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
514 if (UseG1GC) {
515 G1CollectedHeap* g1h = G1CollectedHeap::heap();
516 G1ConcurrentMark* cm = g1h->concurrent_mark();
517 return cm->completed_mark_cycles();
518 }
519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
520 WB_END
521
522 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
523 if (UseG1GC) {
524 return (jint)HeapRegion::GrainBytes;
525 }
526 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
527 WB_END
528
529 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
530 if (UseG1GC) {
531 return G1CollectedHeap::heap()->has_uncommittable_regions();
532 }
533 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
534 WB_END
535
536 #endif // INCLUDE_G1GC
537
538 #if INCLUDE_PARALLELGC
539
540 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
541 if (UseParallelGC) {
542 return GenAlignment;
543 }
544 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
545 WB_END
546
547 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
548 if (UseParallelGC) {
549 return GenAlignment;
550 }
551 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
552 WB_END
553
554 #endif // INCLUDE_PARALLELGC
555
556 #if INCLUDE_G1GC
557
558 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
559 if (UseG1GC) {
560 ResourceMark rm(THREAD);
561 G1CollectedHeap* g1h = G1CollectedHeap::heap();
562 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
563 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
564 return JNIHandles::make_local(THREAD, h());
565 }
566 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
567 WB_END
568
569 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
570 if (UseG1GC) {
571 G1NUMA* numa = G1NUMA::numa();
572 return (jint)numa->num_active_nodes();
573 }
574 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
575 WB_END
576
577 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
578 if (UseG1GC) {
579 G1NUMA* numa = G1NUMA::numa();
580 int num_node_ids = (int)numa->num_active_nodes();
581 const int* node_ids = numa->node_ids();
582
583 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
584 for (int i = 0; i < num_node_ids; i++) {
585 result->int_at_put(i, (jint)node_ids[i]);
586 }
587 return (jintArray) JNIHandles::make_local(THREAD, result);
588 }
589 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
590 WB_END
591
592 class OldRegionsLivenessClosure: public HeapRegionClosure {
593
594 private:
595 const int _liveness;
596 size_t _total_count;
597 size_t _total_memory;
598 size_t _total_memory_to_free;
599
600 public:
601 OldRegionsLivenessClosure(int liveness) :
602 _liveness(liveness),
603 _total_count(0),
604 _total_memory(0),
605 _total_memory_to_free(0) { }
606
607 size_t total_count() { return _total_count; }
608 size_t total_memory() { return _total_memory; }
609 size_t total_memory_to_free() { return _total_memory_to_free; }
610
611 bool do_heap_region(HeapRegion* r) {
612 if (r->is_old()) {
613 size_t live = r->live_bytes();
614 size_t size = r->used();
615 size_t reg_size = HeapRegion::GrainBytes;
616 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
617 _total_memory += size;
618 ++_total_count;
619 if (size == reg_size) {
620 // We don't include non-full regions since they are unlikely included in mixed gc
621 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
622 _total_memory_to_free += size - live;
623 }
624 }
625 }
626 return false;
627 }
628 };
629
630
631 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
632 if (!UseG1GC) {
633 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
634 }
635 if (liveness < 0) {
636 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
637 }
638
639 G1CollectedHeap* g1h = G1CollectedHeap::heap();
640 OldRegionsLivenessClosure rli(liveness);
641 g1h->heap_region_iterate(&rli);
642
643 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
644 result->long_at_put(0, rli.total_count());
645 result->long_at_put(1, rli.total_memory());
646 result->long_at_put(2, rli.total_memory_to_free());
647 return (jlongArray) JNIHandles::make_local(THREAD, result);
648 WB_END
649
650 #endif // INCLUDE_G1GC
651
652 // Alloc memory using the test memory type so that we can use that to see if
653 // NMT picks it up correctly
654 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
655 jlong addr = 0;
656 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
657 return addr;
658 WB_END
659
660 // Alloc memory with pseudo call stack. The test can create pseudo malloc
661 // allocation site to stress the malloc tracking.
662 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
663 address pc = (address)(size_t)pseudo_stack;
664 NativeCallStack stack(&pc, 1);
665 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
666 WB_END
667
668 // Alloc memory with pseudo call stack and specific memory type.
669 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
670 address pc = (address)(size_t)pseudo_stack;
671 NativeCallStack stack(&pc, 1);
672 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
673 WB_END
674
675 // Free the memory allocated by NMTAllocTest
676 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
677 os::free((void*)(uintptr_t)mem);
678 WB_END
679
680 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
681 jlong addr = 0;
682
683 addr = (jlong)(uintptr_t)os::reserve_memory(size);
684 MemTracker::record_virtual_memory_type((address)addr, mtTest);
685
686 return addr;
687 WB_END
688
689 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
690 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
691 MemTracker::record_virtual_memory_type((address)addr, mtTest);
692
693 return addr;
694 WB_END
695
696 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
697 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
698 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
699 WB_END
700
701 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
702 os::uncommit_memory((char *)(uintptr_t)addr, size);
703 WB_END
704
705 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
706 os::release_memory((char *)(uintptr_t)addr, size);
707 WB_END
708
709 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
710 int hash_size = MallocSiteTable::hash_buckets();
711 assert(hash_size > 0, "NMT hash_size should be > 0");
712 return (jint)hash_size;
713 WB_END
714
715 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
716 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
717 return (jlong)arena;
718 WB_END
719
720 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
721 Arena* a = (Arena*)arena;
722 delete a;
723 WB_END
724
725 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
726 Arena* a = (Arena*)arena;
727 a->Amalloc(size_t(size));
728 WB_END
729
730 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
731 assert(method != nullptr, "method should not be null");
732 ThreadToNativeFromVM ttn(thread);
733 return env->FromReflectedMethod(method);
734 }
735
736 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
737 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
738 private:
739 int _result;
740 const bool _make_not_entrant;
741 public:
742 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
743 _result(0), _make_not_entrant(make_not_entrant) { }
744 int result() const { return _result; }
745
746 void doit() {
747 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
748 if (t->has_last_Java_frame()) {
749 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
750 frame* f = fst.current();
751 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
752 Deoptimization::deoptimize(t, *f);
753 if (_make_not_entrant) {
754 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
755 assert(cm != nullptr, "sanity check");
756 cm->make_not_entrant();
757 }
758 ++_result;
759 }
760 }
761 }
762 }
763 }
764 };
765
766 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
767 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
768 VMThread::execute(&op);
769 return op.result();
770 WB_END
771
772 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
773 bool result = false;
774 if (thread->has_last_Java_frame()) {
775 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::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1053 // Screen for unavailable/bad comp level or null method
1054 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1055 if (method == nullptr) {
1056 tty->print_cr("WB error: request to compile null method");
1057 return false;
1058 }
1059 if (comp_level > CompilationPolicy::highest_compile_level()) {
1060 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1061 return false;
1062 }
1063 if (comp == nullptr) {
1064 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1065 return false;
1066 }
1067
1068 // Check if compilation is blocking
1069 methodHandle mh(THREAD, method);
1070 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1071 bool is_blocking = !directive->BackgroundCompilationOption;
1072 DirectivesStack::release(directive);
1073
1074 // Compile method and check result
1075 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1076 MutexLocker mu(THREAD, Compile_lock);
1077 bool is_queued = mh->queued_for_compilation();
1078 if ((!is_blocking && is_queued) || nm != nullptr) {
1079 return true;
1080 }
1081 // Check code again because compilation may be finished before Compile_lock is acquired.
1082 if (bci == InvocationEntryBci) {
1083 CompiledMethod* code = mh->code();
1084 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1085 return true;
1086 }
1087 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1088 return true;
1089 }
1090 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1091 mh->print_short_name(tty);
1092 tty->cr();
1093 if (is_blocking && is_queued) {
1094 tty->print_cr("WB error: blocking compilation is still in queue!");
1095 }
1096 return false;
1097 }
1098
1099 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1100 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1101 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1102 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1103 WB_END
1104
1105 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1106 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1107 Method* clinit = ik->class_initializer();
1108 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1109 return false;
1110 }
1111 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1112 WB_END
1113
1114 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1115 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1116 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1117
1118 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1119 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1120 bool result = directive->PrintAssemblyOption;
1121 DirectivesStack::release(directive);
1122
1123 return result;
1124 WB_END
1125
1126 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1127 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1128 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1129
1130 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1131
1132 ResourceMark rm(THREAD);
1133 const char* error_msg = nullptr;
1134 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1135 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1136
1137 if (m == nullptr) {
1138 assert(error_msg != nullptr, "Always have an error message");
1139 tty->print_cr("Got error: %s", error_msg);
1140 return -1; // Pattern failed
1141 }
1142
1143 // Pattern works - now check if it matches
1144 int result;
1145 if (m->match(mh, InlineMatcher::force_inline)) {
1146 result = 2; // Force inline match
1147 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1148 result = 1; // Dont inline match
1149 } else {
1150 result = 0; // No match
1151 }
1152 delete m;
1153 return result;
1154 WB_END
1155
1156 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1157 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1158 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1159
1160 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1161
1162 ResourceMark rm;
1163 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1164
1165 const char* error_msg = nullptr;
1166
1167 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1168 if (m == nullptr) {
1169 assert(error_msg != nullptr, "Must have error_msg");
1170 tty->print_cr("Got error: %s", error_msg);
1171 return -1;
1172 }
1173
1174 // Pattern works - now check if it matches
1175 int result = m->matches(mh);
1176 delete m;
1177 assert(result == 0 || result == 1, "Result out of range");
1178 return result;
1179 WB_END
1180
1181 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1182 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1183 CHECK_JNI_EXCEPTION(env);
1184 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1185
1186 MethodData* mdo = mh->method_data();
1187 if (mdo == nullptr) {
1188 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1189 mdo = mh->method_data();
1190 }
1191 mdo->init();
1192 InvocationCounter* icnt = mdo->invocation_counter();
1193 InvocationCounter* bcnt = mdo->backedge_counter();
1194 // set i-counter according to CompilationPolicy::is_method_profiled
1195 icnt->set(Tier4MinInvocationThreshold);
1196 bcnt->set(Tier4CompileThreshold);
1197 WB_END
1198
1199 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1200 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1201 CHECK_JNI_EXCEPTION(env);
1202 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1203 MutexLocker mu(THREAD, Compile_lock);
1204 MethodData* mdo = mh->method_data();
1205 MethodCounters* mcs = mh->method_counters();
1206
1207 if (mdo != nullptr) {
1208 mdo->init();
1209 ResourceMark rm(THREAD);
1210 int arg_count = mdo->method()->size_of_parameters();
1211 for (int i = 0; i < arg_count; i++) {
1212 mdo->set_arg_modified(i, 0);
1213 }
1214 MutexLocker mu(THREAD, mdo->extra_data_lock());
1215 mdo->clean_method_data(/*always_clean*/true);
1216 }
1217
1218 mh->clear_is_not_c1_compilable();
1219 mh->clear_is_not_c2_compilable();
1220 mh->clear_is_not_c2_osr_compilable();
1221 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1222 if (mcs != nullptr) {
1223 mcs->clear_counters();
1224 }
1225 WB_END
1226
1227 template <typename T, int type_enum>
1228 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1229 if (name == nullptr) {
1230 return false;
1231 }
1232 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1233 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1234 CHECK_JNI_EXCEPTION_(env, false);
1235 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1236 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1237 env->ReleaseStringUTFChars(name, flag_name);
1238 return (result == JVMFlag::SUCCESS);
1239 }
1240
1241 template <typename T, int type_enum>
1242 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1243 if (name == nullptr) {
1244 return false;
1245 }
1246 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1247 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1248 CHECK_JNI_EXCEPTION_(env, false);
1249 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1250 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1251 env->ReleaseStringUTFChars(name, flag_name);
1252 return (result == JVMFlag::SUCCESS);
1253 }
1254
1255 template <typename T>
1256 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1257 ResourceMark rm(thread);
1258 jclass clazz = env->FindClass(name->as_C_string());
1259 CHECK_JNI_EXCEPTION_(env, nullptr);
1260 jmethodID methodID = env->GetStaticMethodID(clazz,
1261 vmSymbols::valueOf_name()->as_C_string(),
1262 sig->as_C_string());
1263 CHECK_JNI_EXCEPTION_(env, nullptr);
1264 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1265 CHECK_JNI_EXCEPTION_(env, nullptr);
1266 return result;
1267 }
1268
1269 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1270 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1271 }
1272 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1273 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1274 }
1275 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1276 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1277 }
1278 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1279 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1280 }*/
1281 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1282 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1283 }
1284
1285 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1286 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1287 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1288 CHECK_JNI_EXCEPTION_(env, nullptr);
1289 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1290 env->ReleaseStringUTFChars(name, flag_name);
1291 return result;
1292 }
1293
1294 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1295 const JVMFlag* flag = getVMFlag(thread, env, name);
1296 return (flag != nullptr) && flag->is_constant_in_binary();
1297 WB_END
1298
1299 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1300 const JVMFlag* flag = getVMFlag(thread, env, name);
1301 return (flag != nullptr) && flag->is_default();
1302 WB_END
1303
1304 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1305 const JVMFlag* flag = getVMFlag(thread, env, name);
1306 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1307 WB_END
1308
1309 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1310 bool result;
1311 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1312 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1313 return booleanBox(thread, env, result);
1314 }
1315 return nullptr;
1316 WB_END
1317
1318 template <typename T, int type_enum>
1319 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1320 T result;
1321 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1322 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1323 return longBox(thread, env, result);
1324 }
1325 return nullptr;
1326 }
1327
1328 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1329 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1330 WB_END
1331
1332 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1333 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1334 WB_END
1335
1336 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1337 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1338 WB_END
1339
1340 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1341 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1342 WB_END
1343
1344 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1345 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1346 WB_END
1347
1348 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1349 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1350 WB_END
1351
1352 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1353 double result;
1354 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1355 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1356 return doubleBox(thread, env, result);
1357 }
1358 return nullptr;
1359 WB_END
1360
1361 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1362 ccstr ccstrResult;
1363 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1364 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1365 jstring result = env->NewStringUTF(ccstrResult);
1366 CHECK_JNI_EXCEPTION_(env, nullptr);
1367 return result;
1368 }
1369 return nullptr;
1370 WB_END
1371
1372 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1373 bool result = value == JNI_TRUE ? true : false;
1374 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1375 WB_END
1376
1377 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1378 int result = value;
1379 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1380 WB_END
1381
1382 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1383 uint result = value;
1384 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1385 WB_END
1386
1387 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1388 intx result = value;
1389 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1390 WB_END
1391
1392 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1393 uintx result = value;
1394 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1395 WB_END
1396
1397 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1398 uint64_t result = value;
1399 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1400 WB_END
1401
1402 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1403 size_t result = value;
1404 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1405 WB_END
1406
1407 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1408 double result = value;
1409 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1410 WB_END
1411
1412 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1413 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1414 const char* ccstrValue;
1415 if (value == nullptr) {
1416 ccstrValue = nullptr;
1417 }
1418 else {
1419 ccstrValue = env->GetStringUTFChars(value, nullptr);
1420 CHECK_JNI_EXCEPTION(env);
1421 }
1422 {
1423 ccstr param = ccstrValue;
1424 ThreadInVMfromNative ttvfn(thread); // back to VM
1425 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1426 assert(param == nullptr, "old value is freed automatically and not returned");
1427 }
1428 }
1429 if (value != nullptr) {
1430 env->ReleaseStringUTFChars(value, ccstrValue);
1431 }
1432 WB_END
1433
1434 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1435 WhiteBox::compilation_locked = true;
1436 WB_END
1437
1438 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1439 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1440 WhiteBox::compilation_locked = false;
1441 mo.notify_all();
1442 WB_END
1443
1444 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1445 ResourceMark rm(THREAD);
1446 int len;
1447 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1448 return (StringTable::lookup(name, len) != nullptr);
1449 WB_END
1450
1451 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1452 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1453 Universe::heap()->collect(GCCause::_wb_full_gc);
1454 #if INCLUDE_G1GC
1455 if (UseG1GC) {
1456 // Needs to be cleared explicitly for G1
1457 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1458 }
1459 #endif // INCLUDE_G1GC
1460 WB_END
1461
1462 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1463 Universe::heap()->collect(GCCause::_wb_young_gc);
1464 WB_END
1465
1466 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1467 // static+volatile in order to force the read to happen
1468 // (not be eliminated by the compiler)
1469 static char c;
1470 static volatile char* p;
1471
1472 p = os::reserve_memory(os::vm_allocation_granularity());
1473 if (p == nullptr) {
1474 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1475 }
1476
1477 c = *p;
1478 WB_END
1479
1480 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1481 const char* features = VM_Version::features_string();
1482 ThreadToNativeFromVM ttn(thread);
1483 jstring features_string = env->NewStringUTF(features);
1484
1485 CHECK_JNI_EXCEPTION_(env, nullptr);
1486
1487 return features_string;
1488 WB_END
1489
1490 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1491 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1492 return CodeCache::get_code_heap(code)->code_blob_type();
1493 }
1494
1495 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1496 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1497 return CodeCache::get_code_heap(blob_type);
1498 }
1499
1500 struct CodeBlobStub {
1501 CodeBlobStub(const CodeBlob* blob) :
1502 name(os::strdup(blob->name())),
1503 size(blob->size()),
1504 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1505 address((jlong) blob) { }
1506 ~CodeBlobStub() { os::free((void*) name); }
1507 const char* const name;
1508 const jint size;
1509 const jint blob_type;
1510 const jlong address;
1511 };
1512
1513 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1514 ResourceMark rm;
1515 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1516 CHECK_JNI_EXCEPTION_(env, nullptr);
1517 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1518
1519 jstring name = env->NewStringUTF(cb->name);
1520 CHECK_JNI_EXCEPTION_(env, nullptr);
1521 env->SetObjectArrayElement(result, 0, name);
1522
1523 jobject obj = integerBox(thread, env, cb->size);
1524 CHECK_JNI_EXCEPTION_(env, nullptr);
1525 env->SetObjectArrayElement(result, 1, obj);
1526
1527 obj = integerBox(thread, env, cb->blob_type);
1528 CHECK_JNI_EXCEPTION_(env, nullptr);
1529 env->SetObjectArrayElement(result, 2, obj);
1530
1531 obj = longBox(thread, env, cb->address);
1532 CHECK_JNI_EXCEPTION_(env, nullptr);
1533 env->SetObjectArrayElement(result, 3, obj);
1534
1535 return result;
1536 }
1537
1538 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1539 ResourceMark rm(THREAD);
1540 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1541 CHECK_JNI_EXCEPTION_(env, nullptr);
1542 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1543 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1544 jobjectArray result = nullptr;
1545 if (code == nullptr) {
1546 return result;
1547 }
1548 int comp_level = code->comp_level();
1549 int insts_size = code->insts_size();
1550
1551 ThreadToNativeFromVM ttn(thread);
1552 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1553 CHECK_JNI_EXCEPTION_(env, nullptr);
1554 result = env->NewObjectArray(5, clazz, nullptr);
1555 if (result == nullptr) {
1556 return result;
1557 }
1558
1559 CodeBlobStub stub(code);
1560 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1561 CHECK_JNI_EXCEPTION_(env, nullptr);
1562 env->SetObjectArrayElement(result, 0, codeBlob);
1563
1564 jobject level = integerBox(thread, env, comp_level);
1565 CHECK_JNI_EXCEPTION_(env, nullptr);
1566 env->SetObjectArrayElement(result, 1, level);
1567
1568 jbyteArray insts = env->NewByteArray(insts_size);
1569 CHECK_JNI_EXCEPTION_(env, nullptr);
1570 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1571 env->SetObjectArrayElement(result, 2, insts);
1572
1573 jobject id = integerBox(thread, env, code->compile_id());
1574 CHECK_JNI_EXCEPTION_(env, nullptr);
1575 env->SetObjectArrayElement(result, 3, id);
1576
1577 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1578 CHECK_JNI_EXCEPTION_(env, nullptr);
1579 env->SetObjectArrayElement(result, 4, entry_point);
1580
1581 return result;
1582 WB_END
1583
1584 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1585 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1586 BufferBlob* blob;
1587 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1588 if (full_size < size) {
1589 full_size += align_up(size - full_size, oopSize);
1590 }
1591 {
1592 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1593 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1594 if (blob != nullptr) {
1595 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1596 }
1597 }
1598 // Track memory usage statistic after releasing CodeCache_lock
1599 MemoryService::track_code_cache_memory_usage();
1600 return blob;
1601 }
1602
1603 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1604 if (size < 0) {
1605 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1606 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1607 }
1608 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1609 WB_END
1610
1611 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1612 if (addr == 0) {
1613 return;
1614 }
1615 BufferBlob::free((BufferBlob*) addr);
1616 WB_END
1617
1618 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1619 ResourceMark rm;
1620 GrowableArray<CodeBlobStub*> blobs;
1621 {
1622 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1623 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1624 if (heap == nullptr) {
1625 return nullptr;
1626 }
1627 for (CodeBlob* cb = (CodeBlob*) heap->first();
1628 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1629 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1630 new (stub) CodeBlobStub(cb);
1631 blobs.append(stub);
1632 }
1633 }
1634 ThreadToNativeFromVM ttn(thread);
1635 jobjectArray result = nullptr;
1636 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1637 CHECK_JNI_EXCEPTION_(env, nullptr);
1638 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1639 CHECK_JNI_EXCEPTION_(env, nullptr);
1640 if (result == nullptr) {
1641 return result;
1642 }
1643 int i = 0;
1644 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1645 it != blobs.end(); ++it) {
1646 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1647 CHECK_JNI_EXCEPTION_(env, nullptr);
1648 env->SetObjectArrayElement(result, i, obj);
1649 CHECK_JNI_EXCEPTION_(env, nullptr);
1650 ++i;
1651 }
1652 return result;
1653 WB_END
1654
1655 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1656 return CompileBroker::get_compilation_activity_mode();
1657 WB_END
1658
1659 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1660 if (addr == 0) {
1661 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1662 "WB_GetCodeBlob: addr is null");
1663 }
1664 ThreadToNativeFromVM ttn(thread);
1665 CodeBlobStub stub((CodeBlob*) addr);
1666 return codeBlob2objectArray(thread, env, &stub);
1667 WB_END
1668
1669 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1670 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1671 CHECK_JNI_EXCEPTION_(env, 0);
1672 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1673 return (jlong) mh->method_data();
1674 WB_END
1675
1676 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1677 return (jlong) thread->stack_size();
1678 WB_END
1679
1680 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1681 return (jlong) thread->stack_overflow_state()->stack_available(
1682 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1683 WB_END
1684
1685
1686 int WhiteBox::array_bytes_to_length(size_t bytes) {
1687 return Array<u1>::bytes_to_length(bytes);
1688 }
1689
1690 ///////////////
1691 // MetaspaceTestContext and MetaspaceTestArena
1692 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1693 metaspace::MetaspaceTestContext* context =
1694 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1695 return (jlong)p2i(context);
1696 WB_END
1697
1698 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1699 delete (metaspace::MetaspaceTestContext*) context;
1700 WB_END
1701
1702 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1703 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1704 context0->purge_area();
1705 WB_END
1706
1707 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1708 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1709 context0->print_on(tty);
1710 WB_END
1711
1712 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1713 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1714 return context0->committed_words();
1715 WB_END
1716
1717 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1718 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1719 return context0->used_words();
1720 WB_END
1721
1722 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1723 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1724 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1725 return (jlong)p2i(context0->create_arena(type));
1726 WB_END
1727
1728 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1729 delete (metaspace::MetaspaceTestArena*) arena;
1730 WB_END
1731
1732 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1733 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1734 MetaWord* p = arena0->allocate((size_t) word_size);
1735 return (jlong)p2i(p);
1736 WB_END
1737
1738 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1739 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1740 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1741 WB_END
1742
1743 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1744 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1745 WB_END
1746
1747 //////////////
1748
1749 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1750 if (size < 0) {
1751 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1752 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1753 }
1754
1755 oop class_loader_oop = JNIHandles::resolve(class_loader);
1756 ClassLoaderData* cld = class_loader_oop != nullptr
1757 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1758 : ClassLoaderData::the_null_class_loader_data();
1759
1760 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1761
1762 return (jlong)(uintptr_t)metadata;
1763 WB_END
1764
1765 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1766 jstring version, jstring location, jobjectArray packages))
1767 Handle h_module (THREAD, JNIHandles::resolve(module));
1768 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1769 WB_END
1770
1771 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1772 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1773 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1774 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1775 WB_END
1776
1777 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1778 Handle h_module (THREAD, JNIHandles::resolve(module));
1779 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1780 WB_END
1781
1782 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1783 Handle h_module (THREAD, JNIHandles::resolve(module));
1784 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1785 WB_END
1786
1787 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1788 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1789 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1790 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1791 WB_END
1792
1793 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1794 if (inc < 0) {
1795 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1796 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1797 }
1798
1799 jlong max_size_t = (jlong) ((size_t) -1);
1800 if (inc > max_size_t) {
1801 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1802 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1803 }
1804
1805 size_t new_cap_until_GC = 0;
1806 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1807 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1808 if (!success) {
1809 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1810 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1811 "due to contention with another thread");
1812 }
1813 return (jlong) new_cap_until_GC;
1814 WB_END
1815
1816 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1817 return (jlong) MetaspaceGC::capacity_until_GC();
1818 WB_END
1819
1820 // The function is only valid when CDS is available.
1821 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1822 #if INCLUDE_CDS
1823 return (jlong)MetaspaceShared::core_region_alignment();
1824 #else
1825 ShouldNotReachHere();
1826 return 0L;
1827 #endif
1828 WB_END
1829
1830 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1831 oop obj_oop = JNIHandles::resolve(obj);
1832 return (jboolean) obj_oop->mark().has_monitor();
1833 WB_END
1834
1835 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1836 return (jint) LockStack::CAPACITY;
1837 WB_END
1838
1839 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1840 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1841 WB_END
1842
1843 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1844 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1845 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1846 WB_END
1847
1848 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1849 VM_ForceSafepoint force_safepoint_op;
1850 VMThread::execute(&force_safepoint_op);
1851 WB_END
1852
1853 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1854 nullStream dev_null;
1855 ClassLoaderStatsVMOperation force_op(&dev_null);
1856 VMThread::execute(&force_op);
1857 WB_END
1858
1859 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1860 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1861 return (jlong) ik->constants();
1862 WB_END
1863
1864 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1865 return ConstantPool::CPCACHE_INDEX_TAG;
1866 WB_END
1867
1868 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1869 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1870 ConstantPool* cp = ik->constants();
1871 if (cp->cache() == nullptr) {
1872 return -1;
1873 }
1874 return cp->cache()->length();
1875 WB_END
1876
1877 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1878 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1879 objArrayOop resolved_refs= ik->constants()->resolved_references();
1880 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1881 WB_END
1882
1883 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1884 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1885 ConstantPool* cp = ik->constants();
1886 if (cp->cache() == nullptr) {
1887 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1888 }
1889 jint cpci = index;
1890 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1891 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1892 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1893 }
1894 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1895 return cpi;
1896 WB_END
1897
1898 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1899 return ConstantPool::encode_invokedynamic_index(index);
1900 WB_END
1901
1902 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1903 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1904 ConstantPool* cp = ik->constants();
1905 if (cp->cache() == nullptr) {
1906 return -1;
1907 }
1908 return cp->resolved_indy_entries_length();
1909 WB_END
1910
1911 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1912 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1913 ConstantPool* cp = ik->constants();
1914 if (cp->cache() == nullptr) {
1915 return -1;
1916 }
1917 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1918 WB_END
1919
1920 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1921 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1922 VMThread::execute(&clear_ics);
1923 WB_END
1924
1925 template <typename T>
1926 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1927 assert(value != nullptr, "sanity");
1928 if (method == nullptr || name == nullptr) {
1929 return false;
1930 }
1931 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1932 CHECK_JNI_EXCEPTION_(env, false);
1933 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1934 // can't be in VM when we call JNI
1935 ThreadToNativeFromVM ttnfv(thread);
1936 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1937 CHECK_JNI_EXCEPTION_(env, false);
1938 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1939 env->ReleaseStringUTFChars(name, flag_name);
1940 if (option == CompileCommand::Unknown) {
1941 return false;
1942 }
1943 if (!CompilerOracle::option_matches_type(option, *value)) {
1944 return false;
1945 }
1946 return CompilerOracle::has_option_value(mh, option, *value);
1947 }
1948
1949 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1950 bool result;
1951 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1952 // can't be in VM when we call JNI
1953 ThreadToNativeFromVM ttnfv(thread);
1954 return booleanBox(thread, env, result);
1955 }
1956 return nullptr;
1957 WB_END
1958
1959 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1960 intx result;
1961 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1962 // can't be in VM when we call JNI
1963 ThreadToNativeFromVM ttnfv(thread);
1964 return longBox(thread, env, result);
1965 }
1966 return nullptr;
1967 WB_END
1968
1969 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1970 uintx result;
1971 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1972 // can't be in VM when we call JNI
1973 ThreadToNativeFromVM ttnfv(thread);
1974 return longBox(thread, env, result);
1975 }
1976 return nullptr;
1977 WB_END
1978
1979 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1980 double result;
1981 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1982 // can't be in VM when we call JNI
1983 ThreadToNativeFromVM ttnfv(thread);
1984 return doubleBox(thread, env, result);
1985 }
1986 return nullptr;
1987 WB_END
1988
1989 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1990 ccstr ccstrResult;
1991 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1992 // can't be in VM when we call JNI
1993 ThreadToNativeFromVM ttnfv(thread);
1994 jstring result = env->NewStringUTF(ccstrResult);
1995 CHECK_JNI_EXCEPTION_(env, nullptr);
1996 return result;
1997 }
1998 return nullptr;
1999 WB_END
2000
2001 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2002 const char* p = Arguments::get_default_shared_archive_path();
2003 ThreadToNativeFromVM ttn(thread);
2004 jstring path_string = env->NewStringUTF(p);
2005
2006 CHECK_JNI_EXCEPTION_(env, nullptr);
2007
2008 return path_string;
2009 WB_END
2010
2011 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2012 return UseSharedSpaces;
2013 WB_END
2014
2015 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2016 #if INCLUDE_CDS
2017 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2018 #else
2019 ShouldNotReachHere();
2020 return (jint)-1;
2021 #endif
2022 WB_END
2023
2024 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2025 #if INCLUDE_CDS
2026 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2027 #else
2028 ShouldNotReachHere();
2029 return (jint)-1;
2030 #endif
2031 WB_END
2032
2033 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2034 return FileMapInfo::memory_mapping_failed();
2035 WB_END
2036
2037 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2038 ResourceMark rm(THREAD);
2039 oop str_oop = JNIHandles::resolve(str);
2040 int length;
2041 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2042 return StringTable::lookup_shared(chars, length) == str_oop;
2043 WB_END
2044
2045 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2046 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2047 WB_END
2048
2049 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2050 return ArchiveHeapLoader::is_mapped();
2051 WB_END
2052
2053 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2054 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2055 if (!k->is_instance_klass()) {
2056 return;
2057 }
2058 InstanceKlass *ik = InstanceKlass::cast(k);
2059 ik->link_class(THREAD); // may throw verification error
2060 WB_END
2061
2062 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2063 return ArchiveHeapLoader::is_mapped();
2064 WB_END
2065
2066 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2067 #if INCLUDE_CDS
2068 return true;
2069 #else
2070 return false;
2071 #endif // INCLUDE_CDS
2072 WB_END
2073
2074 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2075 #if COMPILER2_OR_JVMCI
2076 return true;
2077 #else
2078 return false;
2079 #endif
2080 WB_END
2081
2082 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2083 #if INCLUDE_JVMCI
2084 return JVMCIGlobals::gc_supports_jvmci();
2085 #else
2086 return false;
2087 #endif
2088 WB_END
2089
2090 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2091 return HeapShared::can_write();
2092 WB_END
2093
2094
2095 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2096 #if INCLUDE_JFR
2097 return true;
2098 #else
2099 return false;
2100 #endif // INCLUDE_JFR
2101 WB_END
2102
2103 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2104 #if defined(DTRACE_ENABLED)
2105 return true;
2106 #else
2107 return false;
2108 #endif // DTRACE_ENABLED
2109 WB_END
2110
2111 #if INCLUDE_CDS
2112
2113 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2114 ResourceMark rm;
2115 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2116 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2117 return result;
2118 WB_END
2119
2120 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2121 ResourceMark rm;
2122 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2123 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2124 return result;
2125 WB_END
2126
2127 #endif // INCLUDE_CDS
2128
2129 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2130 class ReadMonitorsClosure : public HandshakeClosure {
2131 jboolean _executed;
2132
2133 void do_thread(Thread* th) {
2134 JavaThread* jt = JavaThread::cast(th);
2135 ResourceMark rm;
2136
2137 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2138
2139 if (!jt->has_last_Java_frame()) {
2140 return;
2141 }
2142 RegisterMap rmap(jt,
2143 RegisterMap::UpdateMap::include,
2144 RegisterMap::ProcessFrames::include,
2145 RegisterMap::WalkContinuation::skip);
2146 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2147 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2148 if (monitors != nullptr) {
2149 int len = monitors->length();
2150 // Walk monitors youngest to oldest
2151 for (int i = len - 1; i >= 0; i--) {
2152 MonitorInfo* mon_info = monitors->at(i);
2153 if (mon_info->eliminated()) continue;
2154 oop owner = mon_info->owner();
2155 if (owner != nullptr) {
2156 info->append(mon_info);
2157 }
2158 }
2159 }
2160 }
2161 _executed = true;
2162 }
2163
2164 public:
2165 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2166 jboolean executed() const { return _executed; }
2167 };
2168
2169 ReadMonitorsClosure rmc;
2170 if (thread_handle != nullptr) {
2171 ThreadsListHandle tlh;
2172 JavaThread* target = nullptr;
2173 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2174 if (is_alive) {
2175 Handshake::execute(&rmc, &tlh, target);
2176 }
2177 }
2178 return rmc.executed();
2179 WB_END
2180
2181 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2182 class TraceSelfClosure : public HandshakeClosure {
2183 jint _num_threads_completed;
2184
2185 void do_thread(Thread* th) {
2186 JavaThread* jt = JavaThread::cast(th);
2187 ResourceMark rm;
2188
2189 jt->print_on(tty);
2190 jt->print_stack_on(tty);
2191 tty->cr();
2192 Atomic::inc(&_num_threads_completed);
2193 }
2194
2195 public:
2196 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2197
2198 jint num_threads_completed() const { return _num_threads_completed; }
2199 };
2200 TraceSelfClosure tsc(Thread::current());
2201
2202 if (all_threads) {
2203 Handshake::execute(&tsc);
2204 } else if (thread_handle != nullptr) {
2205 ThreadsListHandle tlh;
2206 JavaThread* target = nullptr;
2207 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2208 if (is_alive) {
2209 Handshake::execute(&tsc, &tlh, target);
2210 }
2211 }
2212 return tsc.num_threads_completed();
2213 WB_END
2214
2215 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2216 class TraceSelfClosure : public AsyncHandshakeClosure {
2217 JavaThread* _self;
2218 void do_thread(Thread* th) {
2219 assert(th->is_Java_thread(), "sanity");
2220 // AsynchHandshake handshakes are only executed by target.
2221 assert(_self == th, "Must be");
2222 assert(Thread::current() == th, "Must be");
2223 JavaThread* jt = JavaThread::cast(th);
2224 ResourceMark rm;
2225 jt->print_on(tty);
2226 jt->print_stack_on(tty);
2227 tty->cr();
2228 }
2229
2230 public:
2231 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2232 };
2233 if (thread_handle != nullptr) {
2234 ThreadsListHandle tlh;
2235 JavaThread* target = nullptr;
2236 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2237 if (is_alive) {
2238 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2239 Handshake::execute(tsc, target);
2240 }
2241 }
2242 WB_END
2243
2244 static volatile int _emulated_lock = 0;
2245
2246 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2247 JavaThread* self = JavaThread::current();
2248
2249 {
2250 // Before trying to acquire the lock transition into a safepoint safe state.
2251 // Otherwise if either suspender or suspendee blocks for a safepoint
2252 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2253 // the lock without allowing the safepoint to progress.
2254 ThreadBlockInVM tbivm(self);
2255
2256 // We will deadlock here if we are 'suspender' and 'suspendee'
2257 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2258 // at the right place.
2259 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2260 assert(_emulated_lock == 1, "Must be locked");
2261
2262 // Sleep much longer in suspendee to force situation where
2263 // 'suspender' is waiting above to acquire lock.
2264 os::naked_short_sleep(suspender ? 1 : 10);
2265 }
2266 Atomic::store(&_emulated_lock, 0);
2267 WB_END
2268
2269 // Some convenience methods to deal with objects from java
2270 int WhiteBox::offset_for_field(const char* field_name, oop object,
2271 Symbol* signature_symbol) {
2272 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2273
2274 //Get the class of our object
2275 Klass* arg_klass = object->klass();
2276 //Turn it into an instance-klass
2277 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2278
2279 //Create symbols to look for in the class
2280 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2281
2282 //To be filled in with an offset of the field we're looking for
2283 fieldDescriptor fd;
2284
2285 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2286 if (res == nullptr) {
2287 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2288 name_symbol->as_C_string());
2289 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2290 }
2291
2292 //fetch the field at the offset we've found
2293 int dest_offset = fd.offset();
2294
2295 return dest_offset;
2296 }
2297
2298
2299 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2300 int offset = offset_for_field(field_name, object,
2301 vmSymbols::string_signature());
2302 oop string = object->obj_field(offset);
2303 if (string == nullptr) {
2304 return nullptr;
2305 }
2306 const char* ret = java_lang_String::as_utf8_string(string);
2307 return ret;
2308 }
2309
2310 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2311 int offset =
2312 offset_for_field(field_name, object, vmSymbols::bool_signature());
2313 bool ret = (object->bool_field(offset) == JNI_TRUE);
2314 return ret;
2315 }
2316
2317 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2318 ResourceMark rm;
2319 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2320 const char* klass_name = klass->external_name();
2321
2322 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2323
2324 // one by one registration natives for exception catching
2325 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2326 CHECK_JNI_EXCEPTION(env);
2327 for (int i = 0, n = method_count; i < n; ++i) {
2328 // Skip dummy entries
2329 if (method_array[i].fnPtr == nullptr) continue;
2330 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2331 jthrowable throwable_obj = env->ExceptionOccurred();
2332 if (throwable_obj != nullptr) {
2333 env->ExceptionClear();
2334 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2335 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2336 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2337 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2338 klass_name, method_array[i].name, method_array[i].signature);
2339 }
2340 } else {
2341 // Registration failed unexpectedly.
2342 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2343 klass_name, method_array[i].name, method_array[i].signature);
2344 env->UnregisterNatives(wbclass);
2345 break;
2346 }
2347 }
2348 }
2349 }
2350
2351 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2352 // can't be in VM when we call JNI
2353 ThreadToNativeFromVM ttnfv(thread);
2354 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2355 CHECK_JNI_EXCEPTION_(env, 0);
2356 int ret;
2357 {
2358 ThreadInVMfromNative ttvfn(thread); // back to VM
2359 ret = DirectivesParser::parse_string(dir, tty);
2360 }
2361 env->ReleaseStringUTFChars(compDirect, dir);
2362 // -1 for error parsing directive. Return 0 as number of directives added.
2363 if (ret == -1) {
2364 ret = 0;
2365 }
2366 return (jint) ret;
2367 WB_END
2368
2369 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2370 DirectivesStack::pop(count);
2371 WB_END
2372
2373 // Checks that the library libfile has the noexecstack bit set.
2374 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2375 jboolean ret = false;
2376 #ifdef LINUX
2377 // Can't be in VM when we call JNI.
2378 ThreadToNativeFromVM ttnfv(thread);
2379 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2380 CHECK_JNI_EXCEPTION_(env, 0);
2381 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2382 env->ReleaseStringUTFChars(libfile, lf);
2383 #endif
2384 return ret;
2385 WB_END
2386
2387 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2388 LINUX_ONLY(return OSContainer::is_containerized();)
2389 return false;
2390 WB_END
2391
2392 // Physical memory of the host machine (including containers)
2393 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2394 LINUX_ONLY(return os::Linux::physical_memory();)
2395 return os::physical_memory();
2396 WB_END
2397
2398 // Physical swap of the host machine (including containers), Linux only.
2399 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2400 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2401 return -1; // Not used/implemented on other platforms
2402 WB_END
2403
2404 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2405 jobject o,
2406 jstring proc_cgroups,
2407 jstring proc_self_cgroup,
2408 jstring proc_self_mountinfo))
2409 jint ret = 0;
2410 #ifdef LINUX
2411 ThreadToNativeFromVM ttnfv(thread);
2412 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2413 CHECK_JNI_EXCEPTION_(env, 0);
2414 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2415 CHECK_JNI_EXCEPTION_(env, 0);
2416 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2417 CHECK_JNI_EXCEPTION_(env, 0);
2418 u1 cg_type_flags = 0;
2419 // This sets cg_type_flags
2420 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2421 ret = (jint)cg_type_flags;
2422 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2423 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2424 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2425 #endif
2426 return ret;
2427 WB_END
2428
2429 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2430 os::print_os_info(tty);
2431 WB_END
2432
2433 // Elf decoder
2434 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2435 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2436 ElfFile::_do_not_cache_elf_section = true;
2437 #endif
2438 WB_END
2439
2440 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2441 return (jlong) ResolvedMethodTable::items_count();
2442 WB_END
2443
2444 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2445 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2446 WB_END
2447
2448 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2449 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2450 // Return size in bytes.
2451 return k->size() * wordSize;
2452 WB_END
2453
2454 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2455 // It explains how the thread's priority field is used for test state coordination.
2456 //
2457 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2458 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2459 jlong tid = java_lang_Thread::thread_id(target_oop);
2460 JavaThread* target = java_lang_Thread::thread(target_oop);
2461
2462 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2463 ThreadsListHandle tlh;
2464
2465 // Look up the target thread by tid to ensure it is present
2466 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2467 if (t == nullptr) {
2468 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2469 }
2470
2471 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2472 // Allow target to terminate by boosting priority
2473 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2474
2475 // Now wait for the target to terminate
2476 while (!target->is_terminated()) {
2477 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2478 os::naked_short_sleep(0);
2479 }
2480
2481 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2482
2483 // Now release the GC inducing thread - we have to re-resolve the external oop that
2484 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2485 oop original = JNIHandles::resolve_non_null(target_handle);
2486 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2487
2488 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2489
2490 // The Java code should be creating garbage and triggering GC, which would potentially move
2491 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2492 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2493 // kick in.
2494 for (int i = 0; i < 5; i++) {
2495 oop original = JNIHandles::resolve_non_null(target_handle);
2496 oop current = t->threadObj();
2497 if (original != current) {
2498 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2499 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2500 } else {
2501 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2502 ThreadBlockInVM tbivm(thread);
2503 os::naked_short_sleep(50);
2504 }
2505 }
2506 WB_END
2507
2508 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2509 ResourceMark rm; // for verify
2510 stringStream st;
2511 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2512 frame* current_frame = fst.current();
2513 if (log) {
2514 current_frame->print_value_on(&st, nullptr);
2515 }
2516 current_frame->verify(fst.register_map());
2517 }
2518 if (log) {
2519 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2520 tty->print_raw(st.freeze());
2521 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2522 }
2523 WB_END
2524
2525 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2526 #if INCLUDE_JVMTI
2527 return JNI_TRUE;
2528 #else
2529 return JNI_FALSE;
2530 #endif
2531 WB_END
2532
2533 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2534 os::naked_short_sleep(time);
2535 WB_END
2536
2537 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2538 ThreadToNativeFromVM ttn(thread);
2539 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2540 CHECK_JNI_EXCEPTION_(env, nullptr);
2541 return info_string;
2542 WB_END
2543
2544 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2545 GCLocker::lock_critical(thread);
2546 WB_END
2547
2548 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2549 GCLocker::unlock_critical(thread);
2550 WB_END
2551
2552 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2553 if (!Continuations::enabled()) {
2554 tty->print_cr("WB error: must be Continuations::enabled()!");
2555 return JNI_FALSE;
2556 }
2557 jboolean result = false;
2558 #if INCLUDE_JVMTI
2559 if (enable) {
2560 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2561 } else {
2562 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2563 }
2564 #endif
2565 return result;
2566 WB_END
2567
2568 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2569 void* const from = (void*)addr;
2570 void* const to = (void*)(addr + size);
2571 if (from > to) {
2572 os::pretouch_memory(from, to, os::vm_page_size());
2573 }
2574 WB_END
2575
2576 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2577 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2578 WB_END
2579
2580 #define CC (char*)
2581
2582 static JNINativeMethod methods[] = {
2583 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2584 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2585 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2586 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2587 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2588 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2589 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2590 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2591 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2592 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2593 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2594 {CC"parseCommandLine0",
2595 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2596 (void*) &WB_ParseCommandLine
2597 },
2598 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2599 (void*)&WB_AddToBootstrapClassLoaderSearch},
2600 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2601 (void*)&WB_AddToSystemClassLoaderSearch},
2602 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2603 (void*)&WB_GetCompressedOopsMaxHeapSize},
2604 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2605 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2606 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2607 #if INCLUDE_CDS
2608 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2609 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2610 #endif
2611 #if INCLUDE_G1GC
2612 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2613 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2614 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2615 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2616 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2617 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2618 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2619 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2620 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2621 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2622 (void*)&WB_G1AuxiliaryMemoryUsage },
2623 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2624 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2625 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2626 #endif // INCLUDE_G1GC
2627 #if INCLUDE_PARALLELGC
2628 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2629 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2630 #endif
2631 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2632 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2633 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2634 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2635 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2636 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2637 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2638 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2639 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2640 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2641 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2642 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2643 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2644 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2645 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2646 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2647 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2648 (void*)&WB_DeoptimizeMethod },
2649 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2650 (void*)&WB_IsMethodCompiled },
2651 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2652 (void*)&WB_IsMethodCompilable},
2653 {CC"isMethodQueuedForCompilation0",
2654 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2655 {CC"isIntrinsicAvailable0",
2656 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2657 (void*)&WB_IsIntrinsicAvailable},
2658 {CC"makeMethodNotCompilable0",
2659 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2660 {CC"testSetDontInlineMethod0",
2661 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2662 {CC"getMethodCompilationLevel0",
2663 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2664 {CC"getMethodDecompileCount0",
2665 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2666 {CC"getMethodTrapCount0",
2667 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2668 (void*)&WB_GetMethodTrapCount},
2669 {CC"getDeoptCount0",
2670 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2671 {CC"getMethodEntryBci0",
2672 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2673 {CC"getCompileQueueSize",
2674 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2675 {CC"testSetForceInlineMethod0",
2676 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2677 {CC"enqueueMethodForCompilation0",
2678 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2679 {CC"enqueueInitializerForCompilation0",
2680 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2681 {CC"markMethodProfiled",
2682 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2683 {CC"clearMethodState0",
2684 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2685 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2686 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2687 {CC"matchesMethod",
2688 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2689 (void*)&WB_MatchesMethod},
2690 {CC"matchesInline",
2691 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2692 (void*)&WB_MatchesInline},
2693 {CC"shouldPrintAssembly",
2694 CC"(Ljava/lang/reflect/Executable;I)Z",
2695 (void*)&WB_ShouldPrintAssembly},
2696
2697 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2698 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2699 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2700 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2701 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2702 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2703 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2704 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2705 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2706 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2707 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2708 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2709 (void*)&WB_SetStringVMFlag},
2710 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2711 (void*)&WB_GetBooleanVMFlag},
2712 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2713 (void*)&WB_GetIntVMFlag},
2714 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2715 (void*)&WB_GetUintVMFlag},
2716 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2717 (void*)&WB_GetIntxVMFlag},
2718 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2719 (void*)&WB_GetUintxVMFlag},
2720 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2721 (void*)&WB_GetUint64VMFlag},
2722 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2723 (void*)&WB_GetSizeTVMFlag},
2724 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2725 (void*)&WB_GetDoubleVMFlag},
2726 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2727 (void*)&WB_GetStringVMFlag},
2728 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2729 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2730 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2731 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2732 {CC"allocateMetaspace",
2733 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2734 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2735 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2736 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2737 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2738 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2739 (void*)&WB_GetNMethod },
2740 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2741 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2742 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2743 {CC"getCompilationActivityMode",
2744 CC"()I", (void*)&WB_GetCompilationActivityMode},
2745 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2746 (void*)&WB_GetMethodData },
2747 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2748 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2749 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2750 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2751 (void*)&WB_DefineModule },
2752 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2753 (void*)&WB_AddModuleExports },
2754 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2755 (void*)&WB_AddReadsModule },
2756 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2757 (void*)&WB_AddModuleExportsToAllUnnamed },
2758 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2759 (void*)&WB_AddModuleExportsToAll },
2760 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2761 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2762 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2763 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2764 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2765 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2766 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2767 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2768 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2769 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2770 {CC"remapInstructionOperandFromCPCache0",
2771 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2772 {CC"encodeConstantPoolIndyIndex0",
2773 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2774 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2775 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2776 {CC"getMethodBooleanOption",
2777 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2778 (void*)&WB_GetMethodBooleaneOption},
2779 {CC"getMethodIntxOption",
2780 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2781 (void*)&WB_GetMethodIntxOption},
2782 {CC"getMethodUintxOption",
2783 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2784 (void*)&WB_GetMethodUintxOption},
2785 {CC"getMethodDoubleOption",
2786 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2787 (void*)&WB_GetMethodDoubleOption},
2788 {CC"getMethodStringOption",
2789 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2790 (void*)&WB_GetMethodStringOption},
2791 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2792 (void*)&WB_GetDefaultArchivePath},
2793 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2794 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2795 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2796 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2797 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2798 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2799 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2800 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2801 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2802 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2803 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2804 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2805 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2806 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2807 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2808
2809 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2810 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2811 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2812 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2813 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2814 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2815 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2816 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2817 (void*)&WB_AddCompilerDirective },
2818 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2819 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2820 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2821 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2822 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2823 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2824 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2825 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2826 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2827 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2828 (void*)&WB_ConcurrentGCRunTo},
2829 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2830 (void*)&WB_CheckLibSpecifiesNoexecstack},
2831 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2832 {CC"validateCgroup",
2833 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2834 (void*)&WB_ValidateCgroup },
2835 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2836 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2837 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2838 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2839 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2840 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2841 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2842
2843 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2844 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2845 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2846 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2847 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2848 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2849 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2850 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2851 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2852 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2853 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2854
2855 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2856 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2857 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2858
2859 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2860 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2861 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2862 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2863 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2864 };
2865
2866
2867 #undef CC
2868
2869 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2870 {
2871 if (WhiteBoxAPI) {
2872 // Make sure that wbclass is loaded by the null classloader
2873 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2874 Handle loader(THREAD, ik->class_loader());
2875 if (loader.is_null()) {
2876 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2877 WhiteBox::set_used();
2878 }
2879 }
2880 }
2881 JVM_END