1 /*
2 * Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds.h"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.hpp"
31 #include "cds/metaspaceShared.hpp"
32 #include "classfile/classLoaderDataGraph.hpp"
33 #include "classfile/classLoaderStats.hpp"
34 #include "classfile/javaClasses.inline.hpp"
35 #include "classfile/modules.hpp"
36 #include "classfile/protectionDomainCache.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/codeCache.hpp"
42 #include "compiler/compilationPolicy.hpp"
43 #include "compiler/directivesParser.hpp"
44 #include "compiler/methodMatcher.hpp"
45 #include "gc/shared/concurrentGCBreakpoints.hpp"
46 #include "gc/shared/gcConfig.hpp"
47 #include "gc/shared/gcLocker.inline.hpp"
48 #include "gc/shared/genArguments.hpp"
49 #include "gc/shared/genCollectedHeap.hpp"
50 #include "jvmtifiles/jvmtiEnv.hpp"
51 #include "logging/log.hpp"
52 #include "memory/iterator.hpp"
53 #include "memory/metadataFactory.hpp"
54 #include "memory/metaspace/testHelpers.hpp"
55 #include "memory/metaspaceUtils.hpp"
56 #include "memory/oopFactory.hpp"
57 #include "memory/resourceArea.hpp"
58 #include "memory/universe.hpp"
59 #include "oops/array.hpp"
60 #include "oops/compressedOops.hpp"
61 #include "oops/constantPool.inline.hpp"
62 #include "oops/klass.inline.hpp"
63 #include "oops/method.inline.hpp"
64 #include "oops/objArrayKlass.hpp"
65 #include "oops/objArrayOop.inline.hpp"
66 #include "oops/oop.inline.hpp"
67 #include "oops/typeArrayOop.inline.hpp"
68 #include "prims/jvmtiEnvBase.hpp"
69 #include "prims/resolvedMethodTable.hpp"
70 #include "prims/wbtestmethods/parserTests.hpp"
71 #include "prims/whitebox.inline.hpp"
72 #include "runtime/arguments.hpp"
73 #include "runtime/atomic.hpp"
74 #include "runtime/deoptimization.hpp"
75 #include "runtime/fieldDescriptor.inline.hpp"
76 #include "runtime/flags/jvmFlag.hpp"
77 #include "runtime/flags/jvmFlagAccess.hpp"
78 #include "runtime/frame.inline.hpp"
79 #include "runtime/handles.inline.hpp"
80 #include "runtime/handshake.hpp"
81 #include "runtime/interfaceSupport.inline.hpp"
82 #include "runtime/javaCalls.hpp"
83 #include "runtime/javaThread.inline.hpp"
84 #include "runtime/jniHandles.inline.hpp"
85 #include "runtime/os.hpp"
86 #include "runtime/stackFrameStream.inline.hpp"
87 #include "runtime/synchronizer.hpp"
88 #include "runtime/threadSMR.hpp"
89 #include "runtime/vframe.hpp"
90 #include "runtime/vm_version.hpp"
91 #include "services/mallocSiteTable.hpp"
92 #include "services/memoryService.hpp"
93 #include "services/memTracker.hpp"
94 #include "utilities/align.hpp"
95 #include "utilities/debug.hpp"
96 #include "utilities/elfFile.hpp"
97 #include "utilities/exceptions.hpp"
98 #include "utilities/macros.hpp"
99 #include "utilities/nativeCallStack.hpp"
100 #include "utilities/ostream.hpp"
101 #if INCLUDE_G1GC
102 #include "gc/g1/g1Arguments.hpp"
103 #include "gc/g1/g1CollectedHeap.inline.hpp"
104 #include "gc/g1/g1ConcurrentMark.hpp"
105 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
106 #include "gc/g1/heapRegionManager.hpp"
107 #include "gc/g1/heapRegionRemSet.inline.hpp"
108 #endif // INCLUDE_G1GC
109 #if INCLUDE_PARALLELGC
110 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
111 #endif // INCLUDE_PARALLELGC
112 #if INCLUDE_ZGC
113 #include "gc/z/zAddress.inline.hpp"
114 #endif // INCLUDE_ZGC
115 #if INCLUDE_JVMCI
116 #include "jvmci/jvmciEnv.hpp"
117 #include "jvmci/jvmciRuntime.hpp"
118 #endif
119 #ifdef LINUX
120 #include "os_linux.hpp"
121 #include "osContainer_linux.hpp"
122 #include "cgroupSubsystem_linux.hpp"
123 #endif
124
125 #define CHECK_JNI_EXCEPTION_(env, value) \
126 do { \
127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
128 THREAD->clear_pending_jni_exception_check(); \
129 if (HAS_PENDING_EXCEPTION) { \
130 return(value); \
131 } \
132 } while (0)
133
134 #define CHECK_JNI_EXCEPTION(env) \
135 do { \
136 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
137 THREAD->clear_pending_jni_exception_check(); \
138 if (HAS_PENDING_EXCEPTION) { \
139 return; \
140 } \
141 } while (0)
142
143 bool WhiteBox::_used = false;
144 volatile bool WhiteBox::compilation_locked = false;
145
146 class VM_WhiteBoxOperation : public VM_Operation {
147 public:
148 VM_WhiteBoxOperation() { }
149 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
150 bool allow_nested_vm_operations() const { return true; }
151 };
152
153
154 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
155 return (jlong)(void*)JNIHandles::resolve(obj);
156 WB_END
157
158 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
159 return heapOopSize;
160 WB_END
161
162 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
163 return (jint)os::vm_page_size();
164 WB_END
165
166 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
167 return os::vm_allocation_granularity();
168 WB_END
169
170 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
171 return os::large_page_size();
172 WB_END
173
174 class WBIsKlassAliveClosure : public LockedClassesDo {
175 Symbol* _name;
176 int _count;
177 public:
178 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
179
180 void do_klass(Klass* k) {
181 Symbol* ksym = k->name();
182 if (ksym->fast_compare(_name) == 0) {
183 _count++;
184 } else if (k->is_instance_klass()) {
185 // Need special handling for hidden classes because the JVM
186 // appends "+<hex-address>" to hidden class names.
187 InstanceKlass *ik = InstanceKlass::cast(k);
188 if (ik->is_hidden()) {
189 ResourceMark rm;
190 char* k_name = ksym->as_C_string();
191 // Find the first '+' char and truncate the string at that point.
192 // NOTE: This will not work correctly if the original hidden class
193 // name contains a '+'.
194 char* plus_char = strchr(k_name, '+');
195 if (plus_char != nullptr) {
196 *plus_char = 0;
197 char* c_name = _name->as_C_string();
198 if (strcmp(c_name, k_name) == 0) {
199 _count++;
200 }
201 }
202 }
203 }
204 }
205
206 int count() const {
207 return _count;
208 }
209 };
210
211 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
212 oop h_name = JNIHandles::resolve(name);
213 if (h_name == nullptr) {
214 return 0;
215 }
216 Symbol* sym = java_lang_String::as_symbol(h_name);
217 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
218
219 WBIsKlassAliveClosure closure(sym);
220 ClassLoaderDataGraph::classes_do(&closure);
221
222 // Return the count of alive classes with this name.
223 return closure.count();
224 WB_END
225
226 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
227 oop h_name = JNIHandles::resolve(name);
228 if (h_name == nullptr) {
229 return 0;
230 }
231 Symbol* sym = java_lang_String::as_symbol(h_name);
232 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
233 return (jint)sym->refcount();
234 WB_END
235
236
237 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
238 #if INCLUDE_JVMTI
239 ResourceMark rm;
240 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
241 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
242 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
243 assert(err == JVMTI_ERROR_NONE, "must not fail");
244 #endif
245 }
246 WB_END
247
248 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
249 #if INCLUDE_JVMTI
250 ResourceMark rm;
251 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
252 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
253 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
254 assert(err == JVMTI_ERROR_NONE, "must not fail");
255 #endif
256 }
257 WB_END
258
259
260 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
261 return (jlong)Arguments::max_heap_for_compressed_oops();
262 }
263 WB_END
264
265 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
266 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
267 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
268 MinHeapSize,
269 InitialHeapSize,
270 MaxHeapSize,
271 SpaceAlignment,
272 HeapAlignment);
273 }
274 WB_END
275
276 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
277 size_t granularity = os::vm_allocation_granularity();
278 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
279 VirtualSpace vs;
280 vs.initialize(rhs, 50 * granularity);
281
282 // Check if constraints are complied
283 if (!( UseCompressedOops && rhs.base() != nullptr &&
284 CompressedOops::base() != nullptr &&
285 CompressedOops::use_implicit_null_checks() )) {
286 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
287 "\tUseCompressedOops is %d\n"
288 "\trhs.base() is " PTR_FORMAT "\n"
289 "\tCompressedOops::base() is " PTR_FORMAT "\n"
290 "\tCompressedOops::use_implicit_null_checks() is %d",
291 UseCompressedOops,
292 p2i(rhs.base()),
293 p2i(CompressedOops::base()),
294 CompressedOops::use_implicit_null_checks());
295 return;
296 }
297 tty->print_cr("Reading from no access area... ");
298 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
299 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
300 WB_END
301
302 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
303 size_t magnitude, size_t iterations) {
304 size_t granularity = os::vm_allocation_granularity();
305 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
306 VirtualSpace vs;
307 if (!vs.initialize(rhs, 0)) {
308 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
309 return 3;
310 }
311
312 int seed = os::random();
313 tty->print_cr("Random seed is %d", seed);
314
315 for (size_t i = 0; i < iterations; i++) {
316
317 // Whether we will shrink or grow
318 bool shrink = os::random() % 2L == 0;
319
320 // Get random delta to resize virtual space
321 size_t delta = (size_t)os::random() % magnitude;
322
323 // If we are about to shrink virtual space below zero, then expand instead
324 if (shrink && vs.committed_size() < delta) {
325 shrink = false;
326 }
327
328 // Resizing by delta
329 if (shrink) {
330 vs.shrink_by(delta);
331 } else {
332 // If expanding fails expand_by will silently return false
333 vs.expand_by(delta, true);
334 }
335 }
336 return 0;
337 }
338
339 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
340 jlong reserved_space_size, jlong magnitude, jlong iterations))
341 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
342 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
343 iterations);
344 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
345 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
346 return 1;
347 }
348
349 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
350 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
351 if (sizeof(size_t) < sizeof(jlong)) {
352 jlong size_t_max_value = (jlong)SIZE_MAX;
353 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
354 || iterations > size_t_max_value) {
355 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
356 return 2;
357 }
358 }
359
360 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
361 (size_t) magnitude, (size_t) iterations);
362 WB_END
363
364 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
365 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
366 WB_END
367
368 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
369 #if INCLUDE_JVMCI
370 if (EnableJVMCI) {
371 // Enter the JVMCI env that will be used by the CompileBroker.
372 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
373 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
374 }
375 #endif
376 return false;
377 WB_END
378
379 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
380 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
381 WB_END
382
383 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
384 return GCConfig::is_gc_selected_ergonomically();
385 WB_END
386
387 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
388 oop p = JNIHandles::resolve(obj);
389 #if INCLUDE_G1GC
390 if (UseG1GC) {
391 G1CollectedHeap* g1h = G1CollectedHeap::heap();
392 const HeapRegion* hr = g1h->heap_region_containing(p);
393 return !(hr->is_young());
394 }
395 #endif
396 #if INCLUDE_PARALLELGC
397 if (UseParallelGC) {
398 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
399 return !psh->is_in_young(p);
400 }
401 #endif
402 #if INCLUDE_ZGC
403 if (UseZGC) {
404 if (ZGenerational) {
405 return ZHeap::heap()->is_old(to_zaddress(p));
406 } else {
407 return Universe::heap()->is_in(p);
408 }
409 }
410 #endif
411 #if INCLUDE_SHENANDOAHGC
412 if (UseShenandoahGC) {
413 return Universe::heap()->is_in(p);
414 }
415 #endif
416 GenCollectedHeap* gch = GenCollectedHeap::heap();
417 return !gch->is_in_young(p);
418 WB_END
419
420 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
421 oop p = JNIHandles::resolve(obj);
422 return p->size() * HeapWordSize;
423 WB_END
424
425 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
426 return (jlong)SpaceAlignment;
427 WB_END
428
429 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
430 return (jlong)HeapAlignment;
431 WB_END
432
433 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
434 return Universe::heap()->supports_concurrent_gc_breakpoints();
435 WB_END
436
437 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
438 ConcurrentGCBreakpoints::acquire_control();
439 WB_END
440
441 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
442 ConcurrentGCBreakpoints::release_control();
443 WB_END
444
445 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
446 ConcurrentGCBreakpoints::run_to_idle();
447 WB_END
448
449 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
450 Handle h_name(THREAD, JNIHandles::resolve(at));
451 ResourceMark rm;
452 const char* c_name = java_lang_String::as_utf8_string(h_name());
453 return ConcurrentGCBreakpoints::run_to(c_name);
454 WB_END
455
456 #if INCLUDE_G1GC
457
458 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
459 if (UseG1GC) {
460 G1CollectedHeap* g1h = G1CollectedHeap::heap();
461 oop result = JNIHandles::resolve(obj);
462 const HeapRegion* hr = g1h->heap_region_containing(result);
463 return hr->is_humongous();
464 }
465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
466 WB_END
467
468 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
469 if (UseG1GC) {
470 G1CollectedHeap* g1h = G1CollectedHeap::heap();
471 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
472 return hr->is_humongous();
473 }
474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
475 WB_END
476
477 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
478 if (UseG1GC) {
479 G1CollectedHeap* g1h = G1CollectedHeap::heap();
480 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
481 return hr->is_free();
482 }
483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
484 WB_END
485
486 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
487 if (UseG1GC) {
488 G1CollectedHeap* g1h = G1CollectedHeap::heap();
489 size_t nr = g1h->max_regions();
490 return (jlong)nr;
491 }
492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
493 WB_END
494
495 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
496 if (UseG1GC) {
497 G1CollectedHeap* g1h = G1CollectedHeap::heap();
498 size_t nr = g1h->num_free_regions();
499 return (jlong)nr;
500 }
501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
502 WB_END
503
504 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
505 if (UseG1GC) {
506 G1CollectedHeap* g1h = G1CollectedHeap::heap();
507 return g1h->concurrent_mark()->cm_thread()->in_progress();
508 }
509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
510 WB_END
511
512 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
513 if (UseG1GC) {
514 G1CollectedHeap* g1h = G1CollectedHeap::heap();
515 G1ConcurrentMark* cm = g1h->concurrent_mark();
516 return cm->completed_mark_cycles();
517 }
518 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
519 WB_END
520
521 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
522 if (UseG1GC) {
523 return (jint)HeapRegion::GrainBytes;
524 }
525 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
526 WB_END
527
528 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
529 if (UseG1GC) {
530 return G1CollectedHeap::heap()->has_uncommittable_regions();
531 }
532 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
533 WB_END
534
535 #endif // INCLUDE_G1GC
536
537 #if INCLUDE_PARALLELGC
538
539 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
540 if (UseParallelGC) {
541 return GenAlignment;
542 }
543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
544 WB_END
545
546 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
547 if (UseParallelGC) {
548 return GenAlignment;
549 }
550 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
551 WB_END
552
553 #endif // INCLUDE_PARALLELGC
554
555 #if INCLUDE_G1GC
556
557 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
558 if (UseG1GC) {
559 ResourceMark rm(THREAD);
560 G1CollectedHeap* g1h = G1CollectedHeap::heap();
561 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
562 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
563 return JNIHandles::make_local(THREAD, h());
564 }
565 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
566 WB_END
567
568 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
569 if (UseG1GC) {
570 G1NUMA* numa = G1NUMA::numa();
571 return (jint)numa->num_active_nodes();
572 }
573 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
574 WB_END
575
576 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
577 if (UseG1GC) {
578 G1NUMA* numa = G1NUMA::numa();
579 int num_node_ids = (int)numa->num_active_nodes();
580 const int* node_ids = numa->node_ids();
581
582 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
583 for (int i = 0; i < num_node_ids; i++) {
584 result->int_at_put(i, (jint)node_ids[i]);
585 }
586 return (jintArray) JNIHandles::make_local(THREAD, result);
587 }
588 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
589 WB_END
590
591 class OldRegionsLivenessClosure: public HeapRegionClosure {
592
593 private:
594 const int _liveness;
595 size_t _total_count;
596 size_t _total_memory;
597 size_t _total_memory_to_free;
598
599 public:
600 OldRegionsLivenessClosure(int liveness) :
601 _liveness(liveness),
602 _total_count(0),
603 _total_memory(0),
604 _total_memory_to_free(0) { }
605
606 size_t total_count() { return _total_count; }
607 size_t total_memory() { return _total_memory; }
608 size_t total_memory_to_free() { return _total_memory_to_free; }
609
610 bool do_heap_region(HeapRegion* r) {
611 if (r->is_old()) {
612 size_t live = r->live_bytes();
613 size_t size = r->used();
614 size_t reg_size = HeapRegion::GrainBytes;
615 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
616 _total_memory += size;
617 ++_total_count;
618 if (size == reg_size) {
619 // We don't include non-full regions since they are unlikely included in mixed gc
620 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
621 _total_memory_to_free += size - live;
622 }
623 }
624 }
625 return false;
626 }
627 };
628
629
630 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
631 if (!UseG1GC) {
632 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
633 }
634 if (liveness < 0) {
635 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
636 }
637
638 G1CollectedHeap* g1h = G1CollectedHeap::heap();
639 OldRegionsLivenessClosure rli(liveness);
640 g1h->heap_region_iterate(&rli);
641
642 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
643 result->long_at_put(0, rli.total_count());
644 result->long_at_put(1, rli.total_memory());
645 result->long_at_put(2, rli.total_memory_to_free());
646 return (jlongArray) JNIHandles::make_local(THREAD, result);
647 WB_END
648
649 #endif // INCLUDE_G1GC
650
651 // Alloc memory using the test memory type so that we can use that to see if
652 // NMT picks it up correctly
653 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
654 jlong addr = 0;
655 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
656 return addr;
657 WB_END
658
659 // Alloc memory with pseudo call stack. The test can create pseudo malloc
660 // allocation site to stress the malloc tracking.
661 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
662 address pc = (address)(size_t)pseudo_stack;
663 NativeCallStack stack(&pc, 1);
664 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
665 WB_END
666
667 // Alloc memory with pseudo call stack and specific memory type.
668 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
669 address pc = (address)(size_t)pseudo_stack;
670 NativeCallStack stack(&pc, 1);
671 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
672 WB_END
673
674 // Free the memory allocated by NMTAllocTest
675 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
676 os::free((void*)(uintptr_t)mem);
677 WB_END
678
679 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
680 jlong addr = 0;
681
682 addr = (jlong)(uintptr_t)os::reserve_memory(size);
683 MemTracker::record_virtual_memory_type((address)addr, mtTest);
684
685 return addr;
686 WB_END
687
688 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
689 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
690 MemTracker::record_virtual_memory_type((address)addr, mtTest);
691
692 return addr;
693 WB_END
694
695 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
696 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
697 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
698 WB_END
699
700 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
701 os::uncommit_memory((char *)(uintptr_t)addr, size);
702 WB_END
703
704 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
705 os::release_memory((char *)(uintptr_t)addr, size);
706 WB_END
707
708 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
709 int hash_size = MallocSiteTable::hash_buckets();
710 assert(hash_size > 0, "NMT hash_size should be > 0");
711 return (jint)hash_size;
712 WB_END
713
714 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
715 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
716 return (jlong)arena;
717 WB_END
718
719 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
720 Arena* a = (Arena*)arena;
721 delete a;
722 WB_END
723
724 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
725 Arena* a = (Arena*)arena;
726 a->Amalloc(size_t(size));
727 WB_END
728
729 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
730 assert(method != nullptr, "method should not be null");
731 ThreadToNativeFromVM ttn(thread);
732 return env->FromReflectedMethod(method);
733 }
734
735 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
736 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
737 private:
738 int _result;
739 const bool _make_not_entrant;
740 public:
741 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
742 _result(0), _make_not_entrant(make_not_entrant) { }
743 int result() const { return _result; }
744
745 void doit() {
746 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
747 if (t->has_last_Java_frame()) {
748 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
749 frame* f = fst.current();
750 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
751 Deoptimization::deoptimize(t, *f);
752 if (_make_not_entrant) {
753 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
754 assert(cm != nullptr, "sanity check");
755 cm->make_not_entrant();
756 }
757 ++_result;
758 }
759 }
760 }
761 }
762 }
763 };
764
765 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
766 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
767 VMThread::execute(&op);
768 return op.result();
769 WB_END
770
771 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
772 bool result = false;
773 if (thread->has_last_Java_frame()) {
774 RegisterMap reg_map(thread,
775 RegisterMap::UpdateMap::include,
776 RegisterMap::ProcessFrames::include,
777 RegisterMap::WalkContinuation::skip);
778 javaVFrame *jvf = thread->last_java_vframe(®_map);
779 for (jint d = 0; d < depth && jvf != nullptr; d++) {
780 jvf = jvf->java_sender();
781 }
782 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
783 }
784 return result;
785 WB_END
786
787 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
788 DeoptimizationScope deopt_scope;
789 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
790 deopt_scope.deoptimize_marked();
791 WB_END
792
793 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
794 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
795 int result = 0;
796 CHECK_JNI_EXCEPTION_(env, result);
797
798 DeoptimizationScope deopt_scope;
799 {
800 MutexLocker mu(Compile_lock);
801 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
802 if (is_osr) {
803 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
804 } else {
805 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
806 if (mh->code() != nullptr) {
807 deopt_scope.mark(mh->code());
808 ++result;
809 }
810 }
811 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
812 }
813
814 deopt_scope.deoptimize_marked();
815
816 return result;
817 WB_END
818
819 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
820 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
821 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
822 MutexLocker mu(Compile_lock);
823 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
824 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
825 if (code == nullptr) {
826 return JNI_FALSE;
827 }
828 return !code->is_marked_for_deoptimization();
829 WB_END
830
831 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
832 if (comp == nullptr) {
833 return true;
834 }
835 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
836 bool exclude = directive->ExcludeOption;
837 DirectivesStack::release(directive);
838 return exclude;
839 }
840
841 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
842 if (is_osr) {
843 return CompilationPolicy::can_be_osr_compiled(mh, level);
844 } else {
845 return CompilationPolicy::can_be_compiled(mh, level);
846 }
847 }
848
849 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
850 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
851 return false;
852 }
853 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
854 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
855 MutexLocker mu(Compile_lock);
856 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
857
858 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
859 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
860 // to exclude a compilation of 'method'.
861 if (comp_level == CompLevel_any) {
862 // Both compilers could have ExcludeOption set. Check all combinations.
863 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
864 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
865 if (excluded_c1 && excluded_c2) {
866 // Compilation of 'method' excluded by both compilers.
867 return false;
868 }
869
870 if (excluded_c1) {
871 // C1 only has ExcludeOption set: Check if compilable with C2.
872 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
873 } else if (excluded_c2) {
874 // C2 only has ExcludeOption set: Check if compilable with C1.
875 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
876 }
877 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
878 // Compilation of 'method' excluded by compiler used for 'comp_level'.
879 return false;
880 }
881
882 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
883 WB_END
884
885 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
886 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
887 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
888 MutexLocker mu(Compile_lock);
889 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
890 return mh->queued_for_compilation();
891 WB_END
892
893 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
894 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
895 return false; // Intrinsic is not available on a non-existent compilation level.
896 }
897 jmethodID method_id, compilation_context_id;
898 method_id = reflected_method_to_jmid(thread, env, method);
899 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
900 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
901
902 DirectiveSet* directive;
903 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
904 assert(comp != nullptr, "compiler not available");
905 if (compilation_context != nullptr) {
906 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
907 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
908 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
909 directive = DirectivesStack::getMatchingDirective(cch, comp);
910 } else {
911 // Calling with null matches default directive
912 directive = DirectivesStack::getDefaultDirective(comp);
913 }
914 bool result = comp->is_intrinsic_available(mh, directive);
915 DirectivesStack::release(directive);
916 return result;
917 WB_END
918
919 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
920 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
921 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
922 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
923 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
924 return (code != nullptr ? code->comp_level() : CompLevel_none);
925 WB_END
926
927 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
928 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
929 CHECK_JNI_EXCEPTION(env);
930 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
931 if (is_osr) {
932 mh->set_not_osr_compilable("WhiteBox", comp_level);
933 } else {
934 mh->set_not_compilable("WhiteBox", comp_level);
935 }
936 WB_END
937
938 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
939 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
940 CHECK_JNI_EXCEPTION_(env, 0);
941 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
942 uint cnt = 0;
943 MethodData* mdo = mh->method_data();
944 if (mdo != nullptr) {
945 cnt = mdo->decompile_count();
946 }
947 return cnt;
948 WB_END
949
950 // Get the trap count of a method for a specific reason. If the trap count for
951 // that reason did overflow, this includes the overflow trap count of the method.
952 // If 'reason' is null, the sum of the traps for all reasons will be returned.
953 // This number includes the overflow trap count if the trap count for any reason
954 // did overflow.
955 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
956 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
957 CHECK_JNI_EXCEPTION_(env, 0);
958 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
959 uint cnt = 0;
960 MethodData* mdo = mh->method_data();
961 if (mdo != nullptr) {
962 ResourceMark rm(THREAD);
963 char* reason_str = (reason_obj == nullptr) ?
964 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
965 bool overflow = false;
966 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
967 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
968 cnt = mdo->trap_count(reason);
969 // Count in the overflow trap count on overflow
970 if (cnt == (uint)-1) {
971 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
972 }
973 break;
974 } else if (reason_str == nullptr) {
975 uint c = mdo->trap_count(reason);
976 if (c == (uint)-1) {
977 c = mdo->trap_count_limit();
978 if (!overflow) {
979 // Count overflow trap count just once
980 overflow = true;
981 c += mdo->overflow_trap_count();
982 }
983 }
984 cnt += c;
985 }
986 }
987 }
988 return cnt;
989 WB_END
990
991 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
992 if (reason_obj == nullptr && action_obj == nullptr) {
993 return Deoptimization::total_deoptimization_count();
994 }
995 ResourceMark rm(THREAD);
996 const char *reason_str = (reason_obj == nullptr) ?
997 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
998 const char *action_str = (action_obj == nullptr) ?
999 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1000
1001 return Deoptimization::deoptimization_count(reason_str, action_str);
1002 WB_END
1003
1004 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1005 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1006 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1007 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1008 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1009 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1010 WB_END
1011
1012 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1013 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1014 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1015 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1016 bool result = mh->dont_inline();
1017 mh->set_dont_inline(value == JNI_TRUE);
1018 return result;
1019 WB_END
1020
1021 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1022 if (comp_level == CompLevel_any) {
1023 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1024 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1025 } else {
1026 return CompileBroker::queue_size(comp_level);
1027 }
1028 WB_END
1029
1030 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1031 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1032 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1033 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1034 bool result = mh->force_inline();
1035 mh->set_force_inline(value == JNI_TRUE);
1036 return result;
1037 WB_END
1038
1039 #ifdef LINUX
1040 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1041 const char* proc_self_cgroup,
1042 const char* proc_self_mountinfo,
1043 u1* cg_flags) {
1044 CgroupInfo cg_infos[CG_INFO_LENGTH];
1045 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1046 proc_self_cgroup,
1047 proc_self_mountinfo, cg_flags);
1048 }
1049 #endif
1050
1051 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1052 // Screen for unavailable/bad comp level or null method
1053 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1054 if (method == nullptr) {
1055 tty->print_cr("WB error: request to compile null method");
1056 return false;
1057 }
1058 if (comp_level > CompilationPolicy::highest_compile_level()) {
1059 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1060 return false;
1061 }
1062 if (comp == nullptr) {
1063 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1064 return false;
1065 }
1066
1067 // Check if compilation is blocking
1068 methodHandle mh(THREAD, method);
1069 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1070 bool is_blocking = !directive->BackgroundCompilationOption;
1071 DirectivesStack::release(directive);
1072
1073 // Compile method and check result
1074 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1075 MutexLocker mu(THREAD, Compile_lock);
1076 bool is_queued = mh->queued_for_compilation();
1077 if ((!is_blocking && is_queued) || nm != nullptr) {
1078 return true;
1079 }
1080 // Check code again because compilation may be finished before Compile_lock is acquired.
1081 if (bci == InvocationEntryBci) {
1082 CompiledMethod* code = mh->code();
1083 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1084 return true;
1085 }
1086 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1087 return true;
1088 }
1089 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1090 mh->print_short_name(tty);
1091 tty->cr();
1092 if (is_blocking && is_queued) {
1093 tty->print_cr("WB error: blocking compilation is still in queue!");
1094 }
1095 return false;
1096 }
1097
1098 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1099 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1100 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1101 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1102 WB_END
1103
1104 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1105 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1106 Method* clinit = ik->class_initializer();
1107 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1108 return false;
1109 }
1110 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1111 WB_END
1112
1113 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1114 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1115 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1116
1117 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1118 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1119 bool result = directive->PrintAssemblyOption;
1120 DirectivesStack::release(directive);
1121
1122 return result;
1123 WB_END
1124
1125 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1126 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1127 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1128
1129 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1130
1131 ResourceMark rm(THREAD);
1132 const char* error_msg = nullptr;
1133 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1134 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1135
1136 if (m == nullptr) {
1137 assert(error_msg != nullptr, "Always have an error message");
1138 tty->print_cr("Got error: %s", error_msg);
1139 return -1; // Pattern failed
1140 }
1141
1142 // Pattern works - now check if it matches
1143 int result;
1144 if (m->match(mh, InlineMatcher::force_inline)) {
1145 result = 2; // Force inline match
1146 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1147 result = 1; // Dont inline match
1148 } else {
1149 result = 0; // No match
1150 }
1151 delete m;
1152 return result;
1153 WB_END
1154
1155 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1156 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1157 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1158
1159 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1160
1161 ResourceMark rm;
1162 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1163
1164 const char* error_msg = nullptr;
1165
1166 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1167 if (m == nullptr) {
1168 assert(error_msg != nullptr, "Must have error_msg");
1169 tty->print_cr("Got error: %s", error_msg);
1170 return -1;
1171 }
1172
1173 // Pattern works - now check if it matches
1174 int result = m->matches(mh);
1175 delete m;
1176 assert(result == 0 || result == 1, "Result out of range");
1177 return result;
1178 WB_END
1179
1180 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1181 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1182 CHECK_JNI_EXCEPTION(env);
1183 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1184
1185 MethodData* mdo = mh->method_data();
1186 if (mdo == nullptr) {
1187 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1188 mdo = mh->method_data();
1189 }
1190 mdo->init();
1191 InvocationCounter* icnt = mdo->invocation_counter();
1192 InvocationCounter* bcnt = mdo->backedge_counter();
1193 // set i-counter according to CompilationPolicy::is_method_profiled
1194 icnt->set(Tier4MinInvocationThreshold);
1195 bcnt->set(Tier4CompileThreshold);
1196 WB_END
1197
1198 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1199 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1200 CHECK_JNI_EXCEPTION(env);
1201 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1202 MutexLocker mu(THREAD, Compile_lock);
1203 MethodData* mdo = mh->method_data();
1204 MethodCounters* mcs = mh->method_counters();
1205
1206 if (mdo != nullptr) {
1207 mdo->init();
1208 ResourceMark rm(THREAD);
1209 int arg_count = mdo->method()->size_of_parameters();
1210 for (int i = 0; i < arg_count; i++) {
1211 mdo->set_arg_modified(i, 0);
1212 }
1213 MutexLocker mu(THREAD, mdo->extra_data_lock());
1214 mdo->clean_method_data(/*always_clean*/true);
1215 }
1216
1217 mh->clear_is_not_c1_compilable();
1218 mh->clear_is_not_c2_compilable();
1219 mh->clear_is_not_c2_osr_compilable();
1220 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1221 if (mcs != nullptr) {
1222 mcs->clear_counters();
1223 }
1224 WB_END
1225
1226 template <typename T, int type_enum>
1227 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1228 if (name == nullptr) {
1229 return false;
1230 }
1231 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1232 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1233 CHECK_JNI_EXCEPTION_(env, false);
1234 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1235 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1236 env->ReleaseStringUTFChars(name, flag_name);
1237 return (result == JVMFlag::SUCCESS);
1238 }
1239
1240 template <typename T, int type_enum>
1241 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1242 if (name == nullptr) {
1243 return false;
1244 }
1245 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1246 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1247 CHECK_JNI_EXCEPTION_(env, false);
1248 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1249 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1250 env->ReleaseStringUTFChars(name, flag_name);
1251 return (result == JVMFlag::SUCCESS);
1252 }
1253
1254 template <typename T>
1255 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1256 ResourceMark rm(thread);
1257 jclass clazz = env->FindClass(name->as_C_string());
1258 CHECK_JNI_EXCEPTION_(env, nullptr);
1259 jmethodID methodID = env->GetStaticMethodID(clazz,
1260 vmSymbols::valueOf_name()->as_C_string(),
1261 sig->as_C_string());
1262 CHECK_JNI_EXCEPTION_(env, nullptr);
1263 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1264 CHECK_JNI_EXCEPTION_(env, nullptr);
1265 return result;
1266 }
1267
1268 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1269 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1270 }
1271 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1272 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1273 }
1274 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1275 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1276 }
1277 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1278 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1279 }*/
1280 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1281 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1282 }
1283
1284 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1285 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1286 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1287 CHECK_JNI_EXCEPTION_(env, nullptr);
1288 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1289 env->ReleaseStringUTFChars(name, flag_name);
1290 return result;
1291 }
1292
1293 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1294 const JVMFlag* flag = getVMFlag(thread, env, name);
1295 return (flag != nullptr) && flag->is_constant_in_binary();
1296 WB_END
1297
1298 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1299 const JVMFlag* flag = getVMFlag(thread, env, name);
1300 return (flag != nullptr) && flag->is_default();
1301 WB_END
1302
1303 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1304 const JVMFlag* flag = getVMFlag(thread, env, name);
1305 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1306 WB_END
1307
1308 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1309 bool result;
1310 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1311 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1312 return booleanBox(thread, env, result);
1313 }
1314 return nullptr;
1315 WB_END
1316
1317 template <typename T, int type_enum>
1318 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1319 T result;
1320 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1321 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1322 return longBox(thread, env, result);
1323 }
1324 return nullptr;
1325 }
1326
1327 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1328 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1329 WB_END
1330
1331 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1332 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1333 WB_END
1334
1335 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1336 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1337 WB_END
1338
1339 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1340 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1341 WB_END
1342
1343 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1344 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1345 WB_END
1346
1347 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1348 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1349 WB_END
1350
1351 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1352 double result;
1353 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1354 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1355 return doubleBox(thread, env, result);
1356 }
1357 return nullptr;
1358 WB_END
1359
1360 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1361 ccstr ccstrResult;
1362 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1363 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1364 jstring result = env->NewStringUTF(ccstrResult);
1365 CHECK_JNI_EXCEPTION_(env, nullptr);
1366 return result;
1367 }
1368 return nullptr;
1369 WB_END
1370
1371 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1372 bool result = value == JNI_TRUE ? true : false;
1373 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1374 WB_END
1375
1376 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1377 int result = value;
1378 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1379 WB_END
1380
1381 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1382 uint result = value;
1383 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1384 WB_END
1385
1386 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1387 intx result = value;
1388 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1389 WB_END
1390
1391 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1392 uintx result = value;
1393 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1394 WB_END
1395
1396 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1397 uint64_t result = value;
1398 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1399 WB_END
1400
1401 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1402 size_t result = value;
1403 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1404 WB_END
1405
1406 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1407 double result = value;
1408 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1409 WB_END
1410
1411 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1412 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1413 const char* ccstrValue;
1414 if (value == nullptr) {
1415 ccstrValue = nullptr;
1416 }
1417 else {
1418 ccstrValue = env->GetStringUTFChars(value, nullptr);
1419 CHECK_JNI_EXCEPTION(env);
1420 }
1421 {
1422 ccstr param = ccstrValue;
1423 ThreadInVMfromNative ttvfn(thread); // back to VM
1424 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1425 assert(param == nullptr, "old value is freed automatically and not returned");
1426 }
1427 }
1428 if (value != nullptr) {
1429 env->ReleaseStringUTFChars(value, ccstrValue);
1430 }
1431 WB_END
1432
1433 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1434 WhiteBox::compilation_locked = true;
1435 WB_END
1436
1437 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1438 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1439 WhiteBox::compilation_locked = false;
1440 mo.notify_all();
1441 WB_END
1442
1443 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1444 ResourceMark rm(THREAD);
1445 int len;
1446 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1447 return (StringTable::lookup(name, len) != nullptr);
1448 WB_END
1449
1450 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1451 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1452 Universe::heap()->collect(GCCause::_wb_full_gc);
1453 #if INCLUDE_G1GC
1454 if (UseG1GC) {
1455 // Needs to be cleared explicitly for G1
1456 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1457 }
1458 #endif // INCLUDE_G1GC
1459 WB_END
1460
1461 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1462 Universe::heap()->collect(GCCause::_wb_young_gc);
1463 WB_END
1464
1465 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1466 // static+volatile in order to force the read to happen
1467 // (not be eliminated by the compiler)
1468 static char c;
1469 static volatile char* p;
1470
1471 p = os::reserve_memory(os::vm_allocation_granularity());
1472 if (p == nullptr) {
1473 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1474 }
1475
1476 c = *p;
1477 WB_END
1478
1479 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1480 const char* features = VM_Version::features_string();
1481 ThreadToNativeFromVM ttn(thread);
1482 jstring features_string = env->NewStringUTF(features);
1483
1484 CHECK_JNI_EXCEPTION_(env, nullptr);
1485
1486 return features_string;
1487 WB_END
1488
1489 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1490 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1491 return CodeCache::get_code_heap(code)->code_blob_type();
1492 }
1493
1494 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1495 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1496 return CodeCache::get_code_heap(blob_type);
1497 }
1498
1499 struct CodeBlobStub {
1500 CodeBlobStub(const CodeBlob* blob) :
1501 name(os::strdup(blob->name())),
1502 size(blob->size()),
1503 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1504 address((jlong) blob) { }
1505 ~CodeBlobStub() { os::free((void*) name); }
1506 const char* const name;
1507 const jint size;
1508 const jint blob_type;
1509 const jlong address;
1510 };
1511
1512 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1513 ResourceMark rm;
1514 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1515 CHECK_JNI_EXCEPTION_(env, nullptr);
1516 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1517
1518 jstring name = env->NewStringUTF(cb->name);
1519 CHECK_JNI_EXCEPTION_(env, nullptr);
1520 env->SetObjectArrayElement(result, 0, name);
1521
1522 jobject obj = integerBox(thread, env, cb->size);
1523 CHECK_JNI_EXCEPTION_(env, nullptr);
1524 env->SetObjectArrayElement(result, 1, obj);
1525
1526 obj = integerBox(thread, env, cb->blob_type);
1527 CHECK_JNI_EXCEPTION_(env, nullptr);
1528 env->SetObjectArrayElement(result, 2, obj);
1529
1530 obj = longBox(thread, env, cb->address);
1531 CHECK_JNI_EXCEPTION_(env, nullptr);
1532 env->SetObjectArrayElement(result, 3, obj);
1533
1534 return result;
1535 }
1536
1537 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1538 ResourceMark rm(THREAD);
1539 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1540 CHECK_JNI_EXCEPTION_(env, nullptr);
1541 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1542 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1543 jobjectArray result = nullptr;
1544 if (code == nullptr) {
1545 return result;
1546 }
1547 int comp_level = code->comp_level();
1548 int insts_size = code->insts_size();
1549
1550 ThreadToNativeFromVM ttn(thread);
1551 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1552 CHECK_JNI_EXCEPTION_(env, nullptr);
1553 result = env->NewObjectArray(5, clazz, nullptr);
1554 if (result == nullptr) {
1555 return result;
1556 }
1557
1558 CodeBlobStub stub(code);
1559 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1560 CHECK_JNI_EXCEPTION_(env, nullptr);
1561 env->SetObjectArrayElement(result, 0, codeBlob);
1562
1563 jobject level = integerBox(thread, env, comp_level);
1564 CHECK_JNI_EXCEPTION_(env, nullptr);
1565 env->SetObjectArrayElement(result, 1, level);
1566
1567 jbyteArray insts = env->NewByteArray(insts_size);
1568 CHECK_JNI_EXCEPTION_(env, nullptr);
1569 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1570 env->SetObjectArrayElement(result, 2, insts);
1571
1572 jobject id = integerBox(thread, env, code->compile_id());
1573 CHECK_JNI_EXCEPTION_(env, nullptr);
1574 env->SetObjectArrayElement(result, 3, id);
1575
1576 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1577 CHECK_JNI_EXCEPTION_(env, nullptr);
1578 env->SetObjectArrayElement(result, 4, entry_point);
1579
1580 return result;
1581 WB_END
1582
1583 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1584 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1585 BufferBlob* blob;
1586 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1587 if (full_size < size) {
1588 full_size += align_up(size - full_size, oopSize);
1589 }
1590 {
1591 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1592 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1593 if (blob != nullptr) {
1594 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1595 }
1596 }
1597 // Track memory usage statistic after releasing CodeCache_lock
1598 MemoryService::track_code_cache_memory_usage();
1599 return blob;
1600 }
1601
1602 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1603 if (size < 0) {
1604 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1605 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1606 }
1607 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1608 WB_END
1609
1610 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1611 if (addr == 0) {
1612 return;
1613 }
1614 BufferBlob::free((BufferBlob*) addr);
1615 WB_END
1616
1617 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1618 ResourceMark rm;
1619 GrowableArray<CodeBlobStub*> blobs;
1620 {
1621 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1622 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1623 if (heap == nullptr) {
1624 return nullptr;
1625 }
1626 for (CodeBlob* cb = (CodeBlob*) heap->first();
1627 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1628 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1629 new (stub) CodeBlobStub(cb);
1630 blobs.append(stub);
1631 }
1632 }
1633 ThreadToNativeFromVM ttn(thread);
1634 jobjectArray result = nullptr;
1635 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1636 CHECK_JNI_EXCEPTION_(env, nullptr);
1637 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1638 CHECK_JNI_EXCEPTION_(env, nullptr);
1639 if (result == nullptr) {
1640 return result;
1641 }
1642 int i = 0;
1643 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1644 it != blobs.end(); ++it) {
1645 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1646 CHECK_JNI_EXCEPTION_(env, nullptr);
1647 env->SetObjectArrayElement(result, i, obj);
1648 CHECK_JNI_EXCEPTION_(env, nullptr);
1649 ++i;
1650 }
1651 return result;
1652 WB_END
1653
1654 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1655 return CompileBroker::get_compilation_activity_mode();
1656 WB_END
1657
1658 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1659 if (addr == 0) {
1660 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1661 "WB_GetCodeBlob: addr is null");
1662 }
1663 ThreadToNativeFromVM ttn(thread);
1664 CodeBlobStub stub((CodeBlob*) addr);
1665 return codeBlob2objectArray(thread, env, &stub);
1666 WB_END
1667
1668 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1669 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1670 CHECK_JNI_EXCEPTION_(env, 0);
1671 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1672 return (jlong) mh->method_data();
1673 WB_END
1674
1675 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1676 return (jlong) thread->stack_size();
1677 WB_END
1678
1679 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1680 return (jlong) thread->stack_overflow_state()->stack_available(
1681 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1682 WB_END
1683
1684
1685 int WhiteBox::array_bytes_to_length(size_t bytes) {
1686 return Array<u1>::bytes_to_length(bytes);
1687 }
1688
1689 ///////////////
1690 // MetaspaceTestContext and MetaspaceTestArena
1691 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1692 metaspace::MetaspaceTestContext* context =
1693 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1694 return (jlong)p2i(context);
1695 WB_END
1696
1697 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1698 delete (metaspace::MetaspaceTestContext*) context;
1699 WB_END
1700
1701 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1702 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1703 context0->purge_area();
1704 WB_END
1705
1706 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1707 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1708 context0->print_on(tty);
1709 WB_END
1710
1711 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1712 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1713 return context0->committed_words();
1714 WB_END
1715
1716 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1717 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1718 return context0->used_words();
1719 WB_END
1720
1721 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1722 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1723 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1724 return (jlong)p2i(context0->create_arena(type));
1725 WB_END
1726
1727 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1728 delete (metaspace::MetaspaceTestArena*) arena;
1729 WB_END
1730
1731 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1732 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1733 MetaWord* p = arena0->allocate((size_t) word_size);
1734 return (jlong)p2i(p);
1735 WB_END
1736
1737 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1738 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1739 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1740 WB_END
1741
1742 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1743 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1744 WB_END
1745
1746 //////////////
1747
1748 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1749 if (size < 0) {
1750 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1751 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1752 }
1753
1754 oop class_loader_oop = JNIHandles::resolve(class_loader);
1755 ClassLoaderData* cld = class_loader_oop != nullptr
1756 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1757 : ClassLoaderData::the_null_class_loader_data();
1758
1759 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1760
1761 return (jlong)(uintptr_t)metadata;
1762 WB_END
1763
1764 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1765 jstring version, jstring location, jobjectArray packages))
1766 Handle h_module (THREAD, JNIHandles::resolve(module));
1767 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1768 WB_END
1769
1770 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1771 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1772 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1773 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1774 WB_END
1775
1776 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1777 Handle h_module (THREAD, JNIHandles::resolve(module));
1778 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1779 WB_END
1780
1781 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1782 Handle h_module (THREAD, JNIHandles::resolve(module));
1783 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1784 WB_END
1785
1786 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1787 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1788 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1789 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1790 WB_END
1791
1792 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1793 if (inc < 0) {
1794 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1795 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1796 }
1797
1798 jlong max_size_t = (jlong) ((size_t) -1);
1799 if (inc > max_size_t) {
1800 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1801 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1802 }
1803
1804 size_t new_cap_until_GC = 0;
1805 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1806 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1807 if (!success) {
1808 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1809 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1810 "due to contention with another thread");
1811 }
1812 return (jlong) new_cap_until_GC;
1813 WB_END
1814
1815 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1816 return (jlong) MetaspaceGC::capacity_until_GC();
1817 WB_END
1818
1819 // The function is only valid when CDS is available.
1820 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1821 #if INCLUDE_CDS
1822 return (jlong)MetaspaceShared::core_region_alignment();
1823 #else
1824 ShouldNotReachHere();
1825 return 0L;
1826 #endif
1827 WB_END
1828
1829 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1830 oop obj_oop = JNIHandles::resolve(obj);
1831 return (jboolean) obj_oop->mark().has_monitor();
1832 WB_END
1833
1834 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1835 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1836 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1837 WB_END
1838
1839 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1840 VM_ForceSafepoint force_safepoint_op;
1841 VMThread::execute(&force_safepoint_op);
1842 WB_END
1843
1844 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1845 nullStream dev_null;
1846 ClassLoaderStatsVMOperation force_op(&dev_null);
1847 VMThread::execute(&force_op);
1848 WB_END
1849
1850 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1851 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1852 return (jlong) ik->constants();
1853 WB_END
1854
1855 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1856 return ConstantPool::CPCACHE_INDEX_TAG;
1857 WB_END
1858
1859 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1860 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1861 ConstantPool* cp = ik->constants();
1862 if (cp->cache() == nullptr) {
1863 return -1;
1864 }
1865 return cp->cache()->length();
1866 WB_END
1867
1868 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1869 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1870 objArrayOop resolved_refs= ik->constants()->resolved_references();
1871 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1872 WB_END
1873
1874 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1875 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1876 ConstantPool* cp = ik->constants();
1877 if (cp->cache() == nullptr) {
1878 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1879 }
1880 jint cpci = index;
1881 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1882 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1883 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1884 }
1885 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1886 return cpi;
1887 WB_END
1888
1889 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1890 return ConstantPool::encode_invokedynamic_index(index);
1891 WB_END
1892
1893 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1894 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1895 ConstantPool* cp = ik->constants();
1896 if (cp->cache() == nullptr) {
1897 return -1;
1898 }
1899 return cp->resolved_indy_entries_length();
1900 WB_END
1901
1902 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
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_entry_at(index)->constant_pool_index();
1909 WB_END
1910
1911 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1912 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1913 VMThread::execute(&clear_ics);
1914 WB_END
1915
1916 template <typename T>
1917 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1918 assert(value != nullptr, "sanity");
1919 if (method == nullptr || name == nullptr) {
1920 return false;
1921 }
1922 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1923 CHECK_JNI_EXCEPTION_(env, false);
1924 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1925 // can't be in VM when we call JNI
1926 ThreadToNativeFromVM ttnfv(thread);
1927 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1928 CHECK_JNI_EXCEPTION_(env, false);
1929 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1930 env->ReleaseStringUTFChars(name, flag_name);
1931 if (option == CompileCommand::Unknown) {
1932 return false;
1933 }
1934 if (!CompilerOracle::option_matches_type(option, *value)) {
1935 return false;
1936 }
1937 return CompilerOracle::has_option_value(mh, option, *value);
1938 }
1939
1940 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1941 bool result;
1942 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1943 // can't be in VM when we call JNI
1944 ThreadToNativeFromVM ttnfv(thread);
1945 return booleanBox(thread, env, result);
1946 }
1947 return nullptr;
1948 WB_END
1949
1950 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1951 intx result;
1952 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1953 // can't be in VM when we call JNI
1954 ThreadToNativeFromVM ttnfv(thread);
1955 return longBox(thread, env, result);
1956 }
1957 return nullptr;
1958 WB_END
1959
1960 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1961 uintx result;
1962 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1963 // can't be in VM when we call JNI
1964 ThreadToNativeFromVM ttnfv(thread);
1965 return longBox(thread, env, result);
1966 }
1967 return nullptr;
1968 WB_END
1969
1970 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1971 double result;
1972 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1973 // can't be in VM when we call JNI
1974 ThreadToNativeFromVM ttnfv(thread);
1975 return doubleBox(thread, env, result);
1976 }
1977 return nullptr;
1978 WB_END
1979
1980 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1981 ccstr ccstrResult;
1982 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1983 // can't be in VM when we call JNI
1984 ThreadToNativeFromVM ttnfv(thread);
1985 jstring result = env->NewStringUTF(ccstrResult);
1986 CHECK_JNI_EXCEPTION_(env, nullptr);
1987 return result;
1988 }
1989 return nullptr;
1990 WB_END
1991
1992 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1993 const char* p = Arguments::get_default_shared_archive_path();
1994 ThreadToNativeFromVM ttn(thread);
1995 jstring path_string = env->NewStringUTF(p);
1996
1997 CHECK_JNI_EXCEPTION_(env, nullptr);
1998
1999 return path_string;
2000 WB_END
2001
2002 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2003 return UseSharedSpaces;
2004 WB_END
2005
2006 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2007 #if INCLUDE_CDS
2008 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2009 #else
2010 ShouldNotReachHere();
2011 return (jint)-1;
2012 #endif
2013 WB_END
2014
2015 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2016 #if INCLUDE_CDS
2017 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2018 #else
2019 ShouldNotReachHere();
2020 return (jint)-1;
2021 #endif
2022 WB_END
2023
2024 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2025 return FileMapInfo::memory_mapping_failed();
2026 WB_END
2027
2028 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2029 ResourceMark rm(THREAD);
2030 oop str_oop = JNIHandles::resolve(str);
2031 int length;
2032 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2033 return StringTable::lookup_shared(chars, length) == str_oop;
2034 WB_END
2035
2036 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2037 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2038 WB_END
2039
2040 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2041 return ArchiveHeapLoader::is_mapped();
2042 WB_END
2043
2044 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2045 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2046 if (!k->is_instance_klass()) {
2047 return;
2048 }
2049 InstanceKlass *ik = InstanceKlass::cast(k);
2050 ik->link_class(THREAD); // may throw verification error
2051 WB_END
2052
2053 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2054 return ArchiveHeapLoader::is_mapped();
2055 WB_END
2056
2057 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2058 #if INCLUDE_CDS
2059 return true;
2060 #else
2061 return false;
2062 #endif // INCLUDE_CDS
2063 WB_END
2064
2065 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2066 #if COMPILER2_OR_JVMCI
2067 return true;
2068 #else
2069 return false;
2070 #endif
2071 WB_END
2072
2073 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2074 #if INCLUDE_JVMCI
2075 return JVMCIGlobals::gc_supports_jvmci();
2076 #else
2077 return false;
2078 #endif
2079 WB_END
2080
2081 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2082 return HeapShared::can_write();
2083 WB_END
2084
2085
2086 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2087 #if INCLUDE_JFR
2088 return true;
2089 #else
2090 return false;
2091 #endif // INCLUDE_JFR
2092 WB_END
2093
2094 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2095 #if defined(DTRACE_ENABLED)
2096 return true;
2097 #else
2098 return false;
2099 #endif // DTRACE_ENABLED
2100 WB_END
2101
2102 #if INCLUDE_CDS
2103
2104 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2105 ResourceMark rm;
2106 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2107 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2108 return result;
2109 WB_END
2110
2111 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2112 ResourceMark rm;
2113 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2114 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2115 return result;
2116 WB_END
2117
2118 #endif // INCLUDE_CDS
2119
2120 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2121 class ReadMonitorsClosure : public HandshakeClosure {
2122 jboolean _executed;
2123
2124 void do_thread(Thread* th) {
2125 JavaThread* jt = JavaThread::cast(th);
2126 ResourceMark rm;
2127
2128 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2129
2130 if (!jt->has_last_Java_frame()) {
2131 return;
2132 }
2133 RegisterMap rmap(jt,
2134 RegisterMap::UpdateMap::include,
2135 RegisterMap::ProcessFrames::include,
2136 RegisterMap::WalkContinuation::skip);
2137 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2138 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2139 if (monitors != nullptr) {
2140 int len = monitors->length();
2141 // Walk monitors youngest to oldest
2142 for (int i = len - 1; i >= 0; i--) {
2143 MonitorInfo* mon_info = monitors->at(i);
2144 if (mon_info->eliminated()) continue;
2145 oop owner = mon_info->owner();
2146 if (owner != nullptr) {
2147 info->append(mon_info);
2148 }
2149 }
2150 }
2151 }
2152 _executed = true;
2153 }
2154
2155 public:
2156 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2157 jboolean executed() const { return _executed; }
2158 };
2159
2160 ReadMonitorsClosure rmc;
2161 if (thread_handle != nullptr) {
2162 ThreadsListHandle tlh;
2163 JavaThread* target = nullptr;
2164 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2165 if (is_alive) {
2166 Handshake::execute(&rmc, &tlh, target);
2167 }
2168 }
2169 return rmc.executed();
2170 WB_END
2171
2172 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2173 class TraceSelfClosure : public HandshakeClosure {
2174 jint _num_threads_completed;
2175
2176 void do_thread(Thread* th) {
2177 JavaThread* jt = JavaThread::cast(th);
2178 ResourceMark rm;
2179
2180 jt->print_on(tty);
2181 jt->print_stack_on(tty);
2182 tty->cr();
2183 Atomic::inc(&_num_threads_completed);
2184 }
2185
2186 public:
2187 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2188
2189 jint num_threads_completed() const { return _num_threads_completed; }
2190 };
2191 TraceSelfClosure tsc(Thread::current());
2192
2193 if (all_threads) {
2194 Handshake::execute(&tsc);
2195 } else if (thread_handle != nullptr) {
2196 ThreadsListHandle tlh;
2197 JavaThread* target = nullptr;
2198 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2199 if (is_alive) {
2200 Handshake::execute(&tsc, &tlh, target);
2201 }
2202 }
2203 return tsc.num_threads_completed();
2204 WB_END
2205
2206 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2207 class TraceSelfClosure : public AsyncHandshakeClosure {
2208 JavaThread* _self;
2209 void do_thread(Thread* th) {
2210 assert(th->is_Java_thread(), "sanity");
2211 // AsynchHandshake handshakes are only executed by target.
2212 assert(_self == th, "Must be");
2213 assert(Thread::current() == th, "Must be");
2214 JavaThread* jt = JavaThread::cast(th);
2215 ResourceMark rm;
2216 jt->print_on(tty);
2217 jt->print_stack_on(tty);
2218 tty->cr();
2219 }
2220
2221 public:
2222 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2223 };
2224 if (thread_handle != nullptr) {
2225 ThreadsListHandle tlh;
2226 JavaThread* target = nullptr;
2227 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2228 if (is_alive) {
2229 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2230 Handshake::execute(tsc, target);
2231 }
2232 }
2233 WB_END
2234
2235 static volatile int _emulated_lock = 0;
2236
2237 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2238 JavaThread* self = JavaThread::current();
2239
2240 {
2241 // Before trying to acquire the lock transition into a safepoint safe state.
2242 // Otherwise if either suspender or suspendee blocks for a safepoint
2243 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2244 // the lock without allowing the safepoint to progress.
2245 ThreadBlockInVM tbivm(self);
2246
2247 // We will deadlock here if we are 'suspender' and 'suspendee'
2248 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2249 // at the right place.
2250 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2251 assert(_emulated_lock == 1, "Must be locked");
2252
2253 // Sleep much longer in suspendee to force situation where
2254 // 'suspender' is waiting above to acquire lock.
2255 os::naked_short_sleep(suspender ? 1 : 10);
2256 }
2257 Atomic::store(&_emulated_lock, 0);
2258 WB_END
2259
2260 // Some convenience methods to deal with objects from java
2261 int WhiteBox::offset_for_field(const char* field_name, oop object,
2262 Symbol* signature_symbol) {
2263 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2264
2265 //Get the class of our object
2266 Klass* arg_klass = object->klass();
2267 //Turn it into an instance-klass
2268 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2269
2270 //Create symbols to look for in the class
2271 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2272
2273 //To be filled in with an offset of the field we're looking for
2274 fieldDescriptor fd;
2275
2276 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2277 if (res == nullptr) {
2278 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2279 name_symbol->as_C_string());
2280 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2281 }
2282
2283 //fetch the field at the offset we've found
2284 int dest_offset = fd.offset();
2285
2286 return dest_offset;
2287 }
2288
2289
2290 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2291 int offset = offset_for_field(field_name, object,
2292 vmSymbols::string_signature());
2293 oop string = object->obj_field(offset);
2294 if (string == nullptr) {
2295 return nullptr;
2296 }
2297 const char* ret = java_lang_String::as_utf8_string(string);
2298 return ret;
2299 }
2300
2301 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2302 int offset =
2303 offset_for_field(field_name, object, vmSymbols::bool_signature());
2304 bool ret = (object->bool_field(offset) == JNI_TRUE);
2305 return ret;
2306 }
2307
2308 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2309 ResourceMark rm;
2310 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2311 const char* klass_name = klass->external_name();
2312
2313 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2314
2315 // one by one registration natives for exception catching
2316 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2317 CHECK_JNI_EXCEPTION(env);
2318 for (int i = 0, n = method_count; i < n; ++i) {
2319 // Skip dummy entries
2320 if (method_array[i].fnPtr == nullptr) continue;
2321 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2322 jthrowable throwable_obj = env->ExceptionOccurred();
2323 if (throwable_obj != nullptr) {
2324 env->ExceptionClear();
2325 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2326 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2327 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2328 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2329 klass_name, method_array[i].name, method_array[i].signature);
2330 }
2331 } else {
2332 // Registration failed unexpectedly.
2333 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2334 klass_name, method_array[i].name, method_array[i].signature);
2335 env->UnregisterNatives(wbclass);
2336 break;
2337 }
2338 }
2339 }
2340 }
2341
2342 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2343 // can't be in VM when we call JNI
2344 ThreadToNativeFromVM ttnfv(thread);
2345 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2346 CHECK_JNI_EXCEPTION_(env, 0);
2347 int ret;
2348 {
2349 ThreadInVMfromNative ttvfn(thread); // back to VM
2350 ret = DirectivesParser::parse_string(dir, tty);
2351 }
2352 env->ReleaseStringUTFChars(compDirect, dir);
2353 // -1 for error parsing directive. Return 0 as number of directives added.
2354 if (ret == -1) {
2355 ret = 0;
2356 }
2357 return (jint) ret;
2358 WB_END
2359
2360 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2361 DirectivesStack::pop(count);
2362 WB_END
2363
2364 // Checks that the library libfile has the noexecstack bit set.
2365 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2366 jboolean ret = false;
2367 #ifdef LINUX
2368 // Can't be in VM when we call JNI.
2369 ThreadToNativeFromVM ttnfv(thread);
2370 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2371 CHECK_JNI_EXCEPTION_(env, 0);
2372 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2373 env->ReleaseStringUTFChars(libfile, lf);
2374 #endif
2375 return ret;
2376 WB_END
2377
2378 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2379 LINUX_ONLY(return OSContainer::is_containerized();)
2380 return false;
2381 WB_END
2382
2383 // Physical memory of the host machine (including containers)
2384 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2385 LINUX_ONLY(return os::Linux::physical_memory();)
2386 return os::physical_memory();
2387 WB_END
2388
2389 // Physical swap of the host machine (including containers), Linux only.
2390 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2391 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2392 return -1; // Not used/implemented on other platforms
2393 WB_END
2394
2395 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2396 jobject o,
2397 jstring proc_cgroups,
2398 jstring proc_self_cgroup,
2399 jstring proc_self_mountinfo))
2400 jint ret = 0;
2401 #ifdef LINUX
2402 ThreadToNativeFromVM ttnfv(thread);
2403 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2404 CHECK_JNI_EXCEPTION_(env, 0);
2405 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2406 CHECK_JNI_EXCEPTION_(env, 0);
2407 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2408 CHECK_JNI_EXCEPTION_(env, 0);
2409 u1 cg_type_flags = 0;
2410 // This sets cg_type_flags
2411 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2412 ret = (jint)cg_type_flags;
2413 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2414 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2415 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2416 #endif
2417 return ret;
2418 WB_END
2419
2420 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2421 os::print_os_info(tty);
2422 WB_END
2423
2424 // Elf decoder
2425 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2426 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2427 ElfFile::_do_not_cache_elf_section = true;
2428 #endif
2429 WB_END
2430
2431 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2432 return (jlong) ResolvedMethodTable::items_count();
2433 WB_END
2434
2435 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2436 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2437 WB_END
2438
2439 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2440 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2441 // Return size in bytes.
2442 return k->size() * wordSize;
2443 WB_END
2444
2445 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2446 // It explains how the thread's priority field is used for test state coordination.
2447 //
2448 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2449 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2450 jlong tid = java_lang_Thread::thread_id(target_oop);
2451 JavaThread* target = java_lang_Thread::thread(target_oop);
2452
2453 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2454 ThreadsListHandle tlh;
2455
2456 // Look up the target thread by tid to ensure it is present
2457 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2458 if (t == nullptr) {
2459 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2460 }
2461
2462 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2463 // Allow target to terminate by boosting priority
2464 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2465
2466 // Now wait for the target to terminate
2467 while (!target->is_terminated()) {
2468 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2469 os::naked_short_sleep(0);
2470 }
2471
2472 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2473
2474 // Now release the GC inducing thread - we have to re-resolve the external oop that
2475 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2476 oop original = JNIHandles::resolve_non_null(target_handle);
2477 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2478
2479 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2480
2481 // The Java code should be creating garbage and triggering GC, which would potentially move
2482 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2483 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2484 // kick in.
2485 for (int i = 0; i < 5; i++) {
2486 oop original = JNIHandles::resolve_non_null(target_handle);
2487 oop current = t->threadObj();
2488 if (original != current) {
2489 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2490 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2491 } else {
2492 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2493 ThreadBlockInVM tbivm(thread);
2494 os::naked_short_sleep(50);
2495 }
2496 }
2497 WB_END
2498
2499 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2500 ResourceMark rm; // for verify
2501 stringStream st;
2502 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2503 frame* current_frame = fst.current();
2504 if (log) {
2505 current_frame->print_value_on(&st, nullptr);
2506 }
2507 current_frame->verify(fst.register_map());
2508 }
2509 if (log) {
2510 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2511 tty->print_raw(st.freeze());
2512 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2513 }
2514 WB_END
2515
2516 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2517 #if INCLUDE_JVMTI
2518 return JNI_TRUE;
2519 #else
2520 return JNI_FALSE;
2521 #endif
2522 WB_END
2523
2524 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2525 os::naked_short_sleep(time);
2526 WB_END
2527
2528 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2529 ThreadToNativeFromVM ttn(thread);
2530 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2531 CHECK_JNI_EXCEPTION_(env, nullptr);
2532 return info_string;
2533 WB_END
2534
2535 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2536 GCLocker::lock_critical(thread);
2537 WB_END
2538
2539 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2540 GCLocker::unlock_critical(thread);
2541 WB_END
2542
2543 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2544 if (!Continuations::enabled()) {
2545 tty->print_cr("WB error: must be Continuations::enabled()!");
2546 return JNI_FALSE;
2547 }
2548 jboolean result = false;
2549 #if INCLUDE_JVMTI
2550 if (enable) {
2551 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2552 } else {
2553 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2554 }
2555 #endif
2556 return result;
2557 WB_END
2558
2559 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2560 void* const from = (void*)addr;
2561 void* const to = (void*)(addr + size);
2562 if (from > to) {
2563 os::pretouch_memory(from, to, os::vm_page_size());
2564 }
2565 WB_END
2566
2567 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2568 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2569 WB_END
2570
2571 #define CC (char*)
2572
2573 static JNINativeMethod methods[] = {
2574 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2575 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2576 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2577 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2578 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2579 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2580 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2581 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2582 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2583 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2584 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2585 {CC"parseCommandLine0",
2586 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2587 (void*) &WB_ParseCommandLine
2588 },
2589 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2590 (void*)&WB_AddToBootstrapClassLoaderSearch},
2591 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2592 (void*)&WB_AddToSystemClassLoaderSearch},
2593 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2594 (void*)&WB_GetCompressedOopsMaxHeapSize},
2595 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2596 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2597 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2598 #if INCLUDE_CDS
2599 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2600 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2601 #endif
2602 #if INCLUDE_G1GC
2603 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2604 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2605 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2606 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2607 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2608 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2609 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2610 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2611 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2612 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2613 (void*)&WB_G1AuxiliaryMemoryUsage },
2614 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2615 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2616 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2617 #endif // INCLUDE_G1GC
2618 #if INCLUDE_PARALLELGC
2619 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2620 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2621 #endif
2622 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2623 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2624 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2625 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2626 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2627 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2628 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2629 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2630 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2631 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2632 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2633 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2634 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2635 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2636 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2637 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2638 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2639 (void*)&WB_DeoptimizeMethod },
2640 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2641 (void*)&WB_IsMethodCompiled },
2642 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2643 (void*)&WB_IsMethodCompilable},
2644 {CC"isMethodQueuedForCompilation0",
2645 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2646 {CC"isIntrinsicAvailable0",
2647 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2648 (void*)&WB_IsIntrinsicAvailable},
2649 {CC"makeMethodNotCompilable0",
2650 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2651 {CC"testSetDontInlineMethod0",
2652 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2653 {CC"getMethodCompilationLevel0",
2654 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2655 {CC"getMethodDecompileCount0",
2656 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2657 {CC"getMethodTrapCount0",
2658 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2659 (void*)&WB_GetMethodTrapCount},
2660 {CC"getDeoptCount0",
2661 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2662 {CC"getMethodEntryBci0",
2663 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2664 {CC"getCompileQueueSize",
2665 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2666 {CC"testSetForceInlineMethod0",
2667 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2668 {CC"enqueueMethodForCompilation0",
2669 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2670 {CC"enqueueInitializerForCompilation0",
2671 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2672 {CC"markMethodProfiled",
2673 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2674 {CC"clearMethodState0",
2675 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2676 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2677 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2678 {CC"matchesMethod",
2679 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2680 (void*)&WB_MatchesMethod},
2681 {CC"matchesInline",
2682 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2683 (void*)&WB_MatchesInline},
2684 {CC"shouldPrintAssembly",
2685 CC"(Ljava/lang/reflect/Executable;I)Z",
2686 (void*)&WB_ShouldPrintAssembly},
2687
2688 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2689 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2690 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2691 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2692 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2693 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2694 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2695 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2696 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2697 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2698 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2699 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2700 (void*)&WB_SetStringVMFlag},
2701 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2702 (void*)&WB_GetBooleanVMFlag},
2703 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2704 (void*)&WB_GetIntVMFlag},
2705 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2706 (void*)&WB_GetUintVMFlag},
2707 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2708 (void*)&WB_GetIntxVMFlag},
2709 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2710 (void*)&WB_GetUintxVMFlag},
2711 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2712 (void*)&WB_GetUint64VMFlag},
2713 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2714 (void*)&WB_GetSizeTVMFlag},
2715 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2716 (void*)&WB_GetDoubleVMFlag},
2717 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2718 (void*)&WB_GetStringVMFlag},
2719 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2720 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2721 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2722 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2723 {CC"allocateMetaspace",
2724 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2725 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2726 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2727 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2728 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2729 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2730 (void*)&WB_GetNMethod },
2731 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2732 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2733 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2734 {CC"getCompilationActivityMode",
2735 CC"()I", (void*)&WB_GetCompilationActivityMode},
2736 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2737 (void*)&WB_GetMethodData },
2738 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2739 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2740 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2741 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2742 (void*)&WB_DefineModule },
2743 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2744 (void*)&WB_AddModuleExports },
2745 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2746 (void*)&WB_AddReadsModule },
2747 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2748 (void*)&WB_AddModuleExportsToAllUnnamed },
2749 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2750 (void*)&WB_AddModuleExportsToAll },
2751 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2752 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2753 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2754 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2755 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2756 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2757 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2758 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2759 {CC"remapInstructionOperandFromCPCache0",
2760 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2761 {CC"encodeConstantPoolIndyIndex0",
2762 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2763 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2764 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2765 {CC"getMethodBooleanOption",
2766 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2767 (void*)&WB_GetMethodBooleaneOption},
2768 {CC"getMethodIntxOption",
2769 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2770 (void*)&WB_GetMethodIntxOption},
2771 {CC"getMethodUintxOption",
2772 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2773 (void*)&WB_GetMethodUintxOption},
2774 {CC"getMethodDoubleOption",
2775 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2776 (void*)&WB_GetMethodDoubleOption},
2777 {CC"getMethodStringOption",
2778 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2779 (void*)&WB_GetMethodStringOption},
2780 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2781 (void*)&WB_GetDefaultArchivePath},
2782 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2783 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2784 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2785 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2786 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2787 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2788 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2789 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2790 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2791 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2792 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2793 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2794 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2795 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2796 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2797
2798 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2799 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2800 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2801 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2802 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2803 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2804 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2805 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2806 (void*)&WB_AddCompilerDirective },
2807 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2808 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2809 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2810 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2811 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2812 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2813 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2814 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2815 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2816 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2817 (void*)&WB_ConcurrentGCRunTo},
2818 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2819 (void*)&WB_CheckLibSpecifiesNoexecstack},
2820 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2821 {CC"validateCgroup",
2822 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2823 (void*)&WB_ValidateCgroup },
2824 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2825 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2826 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2827 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2828 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2829 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2830 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2831
2832 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2833 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2834 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2835 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2836 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2837 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2838 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2839 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2840 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2841 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2842 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2843
2844 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2845 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2846 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2847
2848 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2849 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2850 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2851 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2852 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2853 };
2854
2855
2856 #undef CC
2857
2858 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2859 {
2860 if (WhiteBoxAPI) {
2861 // Make sure that wbclass is loaded by the null classloader
2862 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2863 Handle loader(THREAD, ik->class_loader());
2864 if (loader.is_null()) {
2865 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2866 WhiteBox::set_used();
2867 }
2868 }
2869 }
2870 JVM_END