1 /*
2 * Copyright (c) 2012, 2024, 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/classPrinter.hpp"
35 #include "classfile/javaClasses.inline.hpp"
36 #include "classfile/modules.hpp"
37 #include "classfile/protectionDomainCache.hpp"
38 #include "classfile/stringTable.hpp"
39 #include "classfile/symbolTable.hpp"
40 #include "classfile/systemDictionary.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/codeCache.hpp"
43 #include "compiler/compilationPolicy.hpp"
44 #include "compiler/directivesParser.hpp"
45 #include "compiler/methodMatcher.hpp"
46 #include "gc/shared/concurrentGCBreakpoints.hpp"
47 #include "gc/shared/gcConfig.hpp"
48 #include "gc/shared/gcLocker.inline.hpp"
49 #include "gc/shared/genArguments.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 "nmt/mallocSiteTable.hpp"
60 #include "nmt/memTracker.hpp"
61 #include "oops/array.hpp"
62 #include "oops/compressedOops.hpp"
63 #include "oops/constantPool.inline.hpp"
64 #include "oops/klass.inline.hpp"
65 #include "oops/method.inline.hpp"
66 #include "oops/methodData.inline.hpp"
67 #include "oops/objArrayKlass.hpp"
68 #include "oops/objArrayOop.inline.hpp"
69 #include "oops/oop.inline.hpp"
70 #include "oops/typeArrayOop.inline.hpp"
71 #include "prims/jvmtiEnvBase.hpp"
72 #include "prims/resolvedMethodTable.hpp"
73 #include "prims/wbtestmethods/parserTests.hpp"
74 #include "prims/whitebox.inline.hpp"
75 #include "runtime/arguments.hpp"
76 #include "runtime/atomic.hpp"
77 #include "runtime/deoptimization.hpp"
78 #include "runtime/fieldDescriptor.inline.hpp"
79 #include "runtime/flags/jvmFlag.hpp"
80 #include "runtime/flags/jvmFlagAccess.hpp"
81 #include "runtime/frame.inline.hpp"
82 #include "runtime/handles.inline.hpp"
83 #include "runtime/handshake.hpp"
84 #include "runtime/interfaceSupport.inline.hpp"
85 #include "runtime/javaCalls.hpp"
86 #include "runtime/javaThread.inline.hpp"
87 #include "runtime/jniHandles.inline.hpp"
88 #include "runtime/lockStack.hpp"
89 #include "runtime/os.hpp"
90 #include "runtime/stackFrameStream.inline.hpp"
91 #include "runtime/synchronizer.hpp"
92 #include "runtime/threadSMR.hpp"
93 #include "runtime/vframe.hpp"
94 #include "runtime/vm_version.hpp"
95 #include "services/memoryService.hpp"
96 #include "utilities/align.hpp"
97 #include "utilities/checkedCast.hpp"
98 #include "utilities/debug.hpp"
99 #include "utilities/elfFile.hpp"
100 #include "utilities/exceptions.hpp"
101 #include "utilities/macros.hpp"
102 #include "utilities/nativeCallStack.hpp"
103 #include "utilities/ostream.hpp"
104 #if INCLUDE_G1GC
105 #include "gc/g1/g1Arguments.hpp"
106 #include "gc/g1/g1CollectedHeap.inline.hpp"
107 #include "gc/g1/g1ConcurrentMark.hpp"
108 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
109 #include "gc/g1/g1HeapRegionManager.hpp"
110 #include "gc/g1/g1HeapRegionRemSet.inline.hpp"
111 #endif // INCLUDE_G1GC
112 #if INCLUDE_PARALLELGC
113 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
114 #endif // INCLUDE_PARALLELGC
115 #if INCLUDE_SERIALGC
116 #include "gc/serial/serialHeap.hpp"
117 #endif // INCLUDE_SERIALGC
118 #if INCLUDE_ZGC
119 #include "gc/z/zAddress.inline.hpp"
120 #endif // INCLUDE_ZGC
121 #if INCLUDE_JVMCI
122 #include "jvmci/jvmciEnv.hpp"
123 #include "jvmci/jvmciRuntime.hpp"
124 #endif
125 #ifdef LINUX
126 #include "cgroupSubsystem_linux.hpp"
127 #include "osContainer_linux.hpp"
128 #include "os_linux.hpp"
129 #endif
130
131 #define CHECK_JNI_EXCEPTION_(env, value) \
132 do { \
133 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
134 THREAD->clear_pending_jni_exception_check(); \
135 if (HAS_PENDING_EXCEPTION) { \
136 return(value); \
137 } \
138 } while (0)
139
140 #define CHECK_JNI_EXCEPTION(env) \
141 do { \
142 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
143 THREAD->clear_pending_jni_exception_check(); \
144 if (HAS_PENDING_EXCEPTION) { \
145 return; \
146 } \
147 } while (0)
148
149 bool WhiteBox::_used = false;
150 volatile bool WhiteBox::compilation_locked = false;
151
152 class VM_WhiteBoxOperation : public VM_Operation {
153 public:
154 VM_WhiteBoxOperation() { }
155 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
156 bool allow_nested_vm_operations() const { return true; }
157 };
158
159
160 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
161 return (jlong)(void*)JNIHandles::resolve(obj);
162 WB_END
163
164 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
165 return heapOopSize;
166 WB_END
167
168 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
169 return (jint)os::vm_page_size();
170 WB_END
171
172 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
173 return os::vm_allocation_granularity();
174 WB_END
175
176 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
177 return os::large_page_size();
178 WB_END
179
180 class WBIsKlassAliveClosure : public LockedClassesDo {
181 Symbol* _name;
182 int _count;
183 public:
184 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
185
186 void do_klass(Klass* k) {
187 Symbol* ksym = k->name();
188 if (ksym->fast_compare(_name) == 0) {
189 _count++;
190 } else if (k->is_instance_klass()) {
191 // Need special handling for hidden classes because the JVM
192 // appends "+<hex-address>" to hidden class names.
193 InstanceKlass *ik = InstanceKlass::cast(k);
194 if (ik->is_hidden()) {
195 ResourceMark rm;
196 char* k_name = ksym->as_C_string();
197 // Find the first '+' char and truncate the string at that point.
198 // NOTE: This will not work correctly if the original hidden class
199 // name contains a '+'.
200 char* plus_char = strchr(k_name, '+');
201 if (plus_char != nullptr) {
202 *plus_char = 0;
203 char* c_name = _name->as_C_string();
204 if (strcmp(c_name, k_name) == 0) {
205 _count++;
206 }
207 }
208 }
209 }
210 }
211
212 int count() const {
213 return _count;
214 }
215 };
216
217 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
218 oop h_name = JNIHandles::resolve(name);
219 if (h_name == nullptr) {
220 return 0;
221 }
222 Symbol* sym = java_lang_String::as_symbol(h_name);
223 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
224
225 WBIsKlassAliveClosure closure(sym);
226 ClassLoaderDataGraph::classes_do(&closure);
227
228 // Return the count of alive classes with this name.
229 return closure.count();
230 WB_END
231
232 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
233 oop h_name = JNIHandles::resolve(name);
234 if (h_name == nullptr) {
235 return 0;
236 }
237 Symbol* sym = java_lang_String::as_symbol(h_name);
238 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
239 return (jint)sym->refcount();
240 WB_END
241
242
243 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
244 #if INCLUDE_JVMTI
245 ResourceMark rm;
246 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
247 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
248 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
249 assert(err == JVMTI_ERROR_NONE, "must not fail");
250 #endif
251 }
252 WB_END
253
254 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
255 #if INCLUDE_JVMTI
256 ResourceMark rm;
257 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
258 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
259 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
260 assert(err == JVMTI_ERROR_NONE, "must not fail");
261 #endif
262 }
263 WB_END
264
265
266 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
267 return (jlong)Arguments::max_heap_for_compressed_oops();
268 }
269 WB_END
270
271 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
272 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
273 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
274 MinHeapSize,
275 InitialHeapSize,
276 MaxHeapSize,
277 SpaceAlignment,
278 HeapAlignment);
279 }
280 WB_END
281
282 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
283 size_t granularity = os::vm_allocation_granularity();
284 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
285 VirtualSpace vs;
286 vs.initialize(rhs, 50 * granularity);
287
288 // Check if constraints are complied
289 if (!( UseCompressedOops && rhs.base() != nullptr &&
290 CompressedOops::base() != nullptr &&
291 CompressedOops::use_implicit_null_checks() )) {
292 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
293 "\tUseCompressedOops is %d\n"
294 "\trhs.base() is " PTR_FORMAT "\n"
295 "\tCompressedOops::base() is " PTR_FORMAT "\n"
296 "\tCompressedOops::use_implicit_null_checks() is %d",
297 UseCompressedOops,
298 p2i(rhs.base()),
299 p2i(CompressedOops::base()),
300 CompressedOops::use_implicit_null_checks());
301 return;
302 }
303 tty->print_cr("Reading from no access area... ");
304 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
305 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
306 WB_END
307
308 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
309 size_t magnitude, size_t iterations) {
310 size_t granularity = os::vm_allocation_granularity();
311 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
312 VirtualSpace vs;
313 if (!vs.initialize(rhs, 0)) {
314 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
315 return 3;
316 }
317
318 int seed = os::random();
319 tty->print_cr("Random seed is %d", seed);
320
321 for (size_t i = 0; i < iterations; i++) {
322
323 // Whether we will shrink or grow
324 bool shrink = os::random() % 2L == 0;
325
326 // Get random delta to resize virtual space
327 size_t delta = (size_t)os::random() % magnitude;
328
329 // If we are about to shrink virtual space below zero, then expand instead
330 if (shrink && vs.committed_size() < delta) {
331 shrink = false;
332 }
333
334 // Resizing by delta
335 if (shrink) {
336 vs.shrink_by(delta);
337 } else {
338 // If expanding fails expand_by will silently return false
339 vs.expand_by(delta, true);
340 }
341 }
342 return 0;
343 }
344
345 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
346 jlong reserved_space_size, jlong magnitude, jlong iterations))
347 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
348 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
349 iterations);
350 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
351 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
352 return 1;
353 }
354
355 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
356 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
357 if (sizeof(size_t) < sizeof(jlong)) {
358 jlong size_t_max_value = (jlong)SIZE_MAX;
359 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
360 || iterations > size_t_max_value) {
361 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
362 return 2;
363 }
364 }
365
366 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
367 (size_t) magnitude, (size_t) iterations);
368 WB_END
369
370 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
371 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
372 WB_END
373
374 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
375 #if INCLUDE_JVMCI
376 return JVMCI::shared_library_exists();
377 #endif
378 return false;
379 WB_END
380
381 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
382 #if INCLUDE_JVMCI
383 if (EnableJVMCI) {
384 // Enter the JVMCI env that will be used by the CompileBroker.
385 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
386 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
387 }
388 #endif
389 return false;
390 WB_END
391
392 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
393 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
394 WB_END
395
396 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
397 return GCConfig::is_gc_selected_ergonomically();
398 WB_END
399
400 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
401 oop p = JNIHandles::resolve(obj);
402 #if INCLUDE_G1GC
403 if (UseG1GC) {
404 G1CollectedHeap* g1h = G1CollectedHeap::heap();
405 const HeapRegion* hr = g1h->heap_region_containing(p);
406 return hr->is_old_or_humongous();
407 }
408 #endif
409 #if INCLUDE_PARALLELGC
410 if (UseParallelGC) {
411 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
412 return !psh->is_in_young(p);
413 }
414 #endif
415 #if INCLUDE_ZGC
416 if (UseZGC) {
417 if (ZGenerational) {
418 return ZHeap::heap()->is_old(to_zaddress(p));
419 } else {
420 return Universe::heap()->is_in(p);
421 }
422 }
423 #endif
424 #if INCLUDE_SHENANDOAHGC
425 if (UseShenandoahGC) {
426 return Universe::heap()->is_in(p);
427 }
428 #endif
429 #if INCLUDE_SERIALGC
430 if (UseSerialGC) {
431 return !SerialHeap::heap()->is_in_young(p);
432 }
433 #endif
434 ShouldNotReachHere();
435 return false;
436 WB_END
437
438 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
439 oop p = JNIHandles::resolve(obj);
440 return p->size() * HeapWordSize;
441 WB_END
442
443 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
444 return (jlong)SpaceAlignment;
445 WB_END
446
447 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
448 return (jlong)HeapAlignment;
449 WB_END
450
451 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
452 return Universe::heap()->supports_concurrent_gc_breakpoints();
453 WB_END
454
455 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
456 ConcurrentGCBreakpoints::acquire_control();
457 WB_END
458
459 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
460 ConcurrentGCBreakpoints::release_control();
461 WB_END
462
463 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
464 ConcurrentGCBreakpoints::run_to_idle();
465 WB_END
466
467 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
468 Handle h_name(THREAD, JNIHandles::resolve(at));
469 ResourceMark rm;
470 const char* c_name = java_lang_String::as_utf8_string(h_name());
471 return ConcurrentGCBreakpoints::run_to(c_name);
472 WB_END
473
474 #if INCLUDE_G1GC
475
476 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
477 if (UseG1GC) {
478 G1CollectedHeap* g1h = G1CollectedHeap::heap();
479 oop result = JNIHandles::resolve(obj);
480 const HeapRegion* hr = g1h->heap_region_containing(result);
481 return hr->is_humongous();
482 }
483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
484 WB_END
485
486 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
487 if (UseG1GC) {
488 G1CollectedHeap* g1h = G1CollectedHeap::heap();
489 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
490 return hr->is_humongous();
491 }
492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
493 WB_END
494
495 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
496 if (UseG1GC) {
497 G1CollectedHeap* g1h = G1CollectedHeap::heap();
498 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
499 return hr->is_free();
500 }
501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
502 WB_END
503
504 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
505 if (UseG1GC) {
506 G1CollectedHeap* g1h = G1CollectedHeap::heap();
507 size_t nr = g1h->max_regions();
508 return (jlong)nr;
509 }
510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
511 WB_END
512
513 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
514 if (UseG1GC) {
515 G1CollectedHeap* g1h = G1CollectedHeap::heap();
516 size_t nr = g1h->num_free_regions();
517 return (jlong)nr;
518 }
519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
520 WB_END
521
522 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
523 if (UseG1GC) {
524 G1CollectedHeap* g1h = G1CollectedHeap::heap();
525 return g1h->concurrent_mark()->cm_thread()->in_progress();
526 }
527 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
528 WB_END
529
530 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
531 if (UseG1GC) {
532 G1CollectedHeap* g1h = G1CollectedHeap::heap();
533 G1ConcurrentMark* cm = g1h->concurrent_mark();
534 return cm->completed_mark_cycles();
535 }
536 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
537 WB_END
538
539 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
540 if (UseG1GC) {
541 return (jint)HeapRegion::GrainBytes;
542 }
543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
544 WB_END
545
546 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
547 if (UseG1GC) {
548 return G1CollectedHeap::heap()->has_uncommittable_regions();
549 }
550 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
551 WB_END
552
553 #endif // INCLUDE_G1GC
554
555 #if INCLUDE_PARALLELGC
556
557 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
558 if (UseParallelGC) {
559 return GenAlignment;
560 }
561 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
562 WB_END
563
564 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
565 if (UseParallelGC) {
566 return GenAlignment;
567 }
568 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
569 WB_END
570
571 #endif // INCLUDE_PARALLELGC
572
573 #if INCLUDE_G1GC
574
575 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
576 if (UseG1GC) {
577 ResourceMark rm(THREAD);
578 G1CollectedHeap* g1h = G1CollectedHeap::heap();
579 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
580 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
581 return JNIHandles::make_local(THREAD, h());
582 }
583 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
584 WB_END
585
586 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
587 if (UseG1GC) {
588 G1NUMA* numa = G1NUMA::numa();
589 return (jint)numa->num_active_nodes();
590 }
591 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
592 WB_END
593
594 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
595 if (UseG1GC) {
596 G1NUMA* numa = G1NUMA::numa();
597 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
598 const uint* node_ids = numa->node_ids();
599
600 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
601 for (int i = 0; i < num_node_ids; i++) {
602 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
603 }
604 return (jintArray) JNIHandles::make_local(THREAD, result);
605 }
606 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
607 WB_END
608
609 class OldRegionsLivenessClosure: public HeapRegionClosure {
610
611 private:
612 const int _liveness;
613 size_t _total_count;
614 size_t _total_memory;
615 size_t _total_memory_to_free;
616
617 public:
618 OldRegionsLivenessClosure(int liveness) :
619 _liveness(liveness),
620 _total_count(0),
621 _total_memory(0),
622 _total_memory_to_free(0) { }
623
624 size_t total_count() { return _total_count; }
625 size_t total_memory() { return _total_memory; }
626 size_t total_memory_to_free() { return _total_memory_to_free; }
627
628 bool do_heap_region(HeapRegion* r) {
629 if (r->is_old()) {
630 size_t live = r->live_bytes();
631 size_t size = r->used();
632 size_t reg_size = HeapRegion::GrainBytes;
633 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
634 _total_memory += size;
635 ++_total_count;
636 if (size == reg_size) {
637 // We don't include non-full regions since they are unlikely included in mixed gc
638 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
639 _total_memory_to_free += size - live;
640 }
641 }
642 }
643 return false;
644 }
645 };
646
647
648 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
649 if (!UseG1GC) {
650 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
651 }
652 if (liveness < 0) {
653 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
654 }
655
656 G1CollectedHeap* g1h = G1CollectedHeap::heap();
657 OldRegionsLivenessClosure rli(liveness);
658 g1h->heap_region_iterate(&rli);
659
660 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
661 result->long_at_put(0, rli.total_count());
662 result->long_at_put(1, rli.total_memory());
663 result->long_at_put(2, rli.total_memory_to_free());
664 return (jlongArray) JNIHandles::make_local(THREAD, result);
665 WB_END
666
667 #endif // INCLUDE_G1GC
668
669 // Alloc memory using the test memory type so that we can use that to see if
670 // NMT picks it up correctly
671 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
672 jlong addr = 0;
673 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
674 return addr;
675 WB_END
676
677 // Alloc memory with pseudo call stack. The test can create pseudo malloc
678 // allocation site to stress the malloc tracking.
679 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
680 address pc = (address)(size_t)pseudo_stack;
681 NativeCallStack stack(&pc, 1);
682 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
683 WB_END
684
685 // Alloc memory with pseudo call stack and specific memory type.
686 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
687 address pc = (address)(size_t)pseudo_stack;
688 NativeCallStack stack(&pc, 1);
689 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
690 WB_END
691
692 // Free the memory allocated by NMTAllocTest
693 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
694 os::free((void*)(uintptr_t)mem);
695 WB_END
696
697 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
698 jlong addr = 0;
699
700 addr = (jlong)(uintptr_t)os::reserve_memory(size);
701 MemTracker::record_virtual_memory_type((address)addr, mtTest);
702
703 return addr;
704 WB_END
705
706 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
707 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
708 MemTracker::record_virtual_memory_type((address)addr, mtTest);
709
710 return addr;
711 WB_END
712
713 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
714 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
715 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
716 WB_END
717
718 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
719 os::uncommit_memory((char *)(uintptr_t)addr, size);
720 WB_END
721
722 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
723 os::release_memory((char *)(uintptr_t)addr, size);
724 WB_END
725
726 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
727 int hash_size = MallocSiteTable::hash_buckets();
728 assert(hash_size > 0, "NMT hash_size should be > 0");
729 return (jint)hash_size;
730 WB_END
731
732 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
733 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
734 return (jlong)arena;
735 WB_END
736
737 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
738 Arena* a = (Arena*)arena;
739 delete a;
740 WB_END
741
742 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
743 Arena* a = (Arena*)arena;
744 a->Amalloc(size_t(size));
745 WB_END
746
747 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
748 assert(method != nullptr, "method should not be null");
749 ThreadToNativeFromVM ttn(thread);
750 return env->FromReflectedMethod(method);
751 }
752
753 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
754 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
755 private:
756 int _result;
757 const bool _make_not_entrant;
758 public:
759 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
760 _result(0), _make_not_entrant(make_not_entrant) { }
761 int result() const { return _result; }
762
763 void doit() {
764 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
765 if (t->has_last_Java_frame()) {
766 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
767 frame* f = fst.current();
768 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
769 Deoptimization::deoptimize(t, *f);
770 if (_make_not_entrant) {
771 nmethod* nm = CodeCache::find_nmethod(f->pc());
772 assert(nm != nullptr, "did not find nmethod");
773 nm->make_not_entrant();
774 }
775 ++_result;
776 }
777 }
778 }
779 }
780 }
781 };
782
783 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
784 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
785 VMThread::execute(&op);
786 return op.result();
787 WB_END
788
789 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
790 bool result = false;
791 if (thread->has_last_Java_frame()) {
792 RegisterMap reg_map(thread,
793 RegisterMap::UpdateMap::include,
794 RegisterMap::ProcessFrames::include,
795 RegisterMap::WalkContinuation::skip);
796 javaVFrame *jvf = thread->last_java_vframe(®_map);
797 for (jint d = 0; d < depth && jvf != nullptr; d++) {
798 jvf = jvf->java_sender();
799 }
800 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
801 }
802 return result;
803 WB_END
804
805 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
806 DeoptimizationScope deopt_scope;
807 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
808 deopt_scope.deoptimize_marked();
809 WB_END
810
811 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
812 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
813 int result = 0;
814 CHECK_JNI_EXCEPTION_(env, result);
815
816 DeoptimizationScope deopt_scope;
817 {
818 MutexLocker mu(Compile_lock);
819 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
820 if (is_osr) {
821 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
822 } else {
823 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
824 if (mh->code() != nullptr) {
825 deopt_scope.mark(mh->code());
826 ++result;
827 }
828 }
829 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
830 }
831
832 deopt_scope.deoptimize_marked();
833
834 return result;
835 WB_END
836
837 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
838 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
839 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
840 MutexLocker mu(Compile_lock);
841 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
842 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
843 if (code == nullptr) {
844 return JNI_FALSE;
845 }
846 return !code->is_marked_for_deoptimization();
847 WB_END
848
849 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
850 if (comp == nullptr) {
851 return true;
852 }
853 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
854 bool exclude = directive->ExcludeOption;
855 DirectivesStack::release(directive);
856 return exclude;
857 }
858
859 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
860 if (is_osr) {
861 return CompilationPolicy::can_be_osr_compiled(mh, level);
862 } else {
863 return CompilationPolicy::can_be_compiled(mh, level);
864 }
865 }
866
867 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
868 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
869 return false;
870 }
871 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
872 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
873 MutexLocker mu(Compile_lock);
874 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
875
876 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
877 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
878 // to exclude a compilation of 'method'.
879 if (comp_level == CompLevel_any) {
880 // Both compilers could have ExcludeOption set. Check all combinations.
881 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
882 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
883 if (excluded_c1 && excluded_c2) {
884 // Compilation of 'method' excluded by both compilers.
885 return false;
886 }
887
888 if (excluded_c1) {
889 // C1 only has ExcludeOption set: Check if compilable with C2.
890 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
891 } else if (excluded_c2) {
892 // C2 only has ExcludeOption set: Check if compilable with C1.
893 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
894 }
895 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
896 // Compilation of 'method' excluded by compiler used for 'comp_level'.
897 return false;
898 }
899
900 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
901 WB_END
902
903 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
904 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
905 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
906 MutexLocker mu(Compile_lock);
907 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
908 return mh->queued_for_compilation();
909 WB_END
910
911 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
912 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
913 return false; // Intrinsic is not available on a non-existent compilation level.
914 }
915 jmethodID method_id, compilation_context_id;
916 method_id = reflected_method_to_jmid(thread, env, method);
917 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
918 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
919
920 DirectiveSet* directive;
921 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
922 assert(comp != nullptr, "compiler not available");
923 if (compilation_context != nullptr) {
924 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
925 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
926 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
927 directive = DirectivesStack::getMatchingDirective(cch, comp);
928 } else {
929 // Calling with null matches default directive
930 directive = DirectivesStack::getDefaultDirective(comp);
931 }
932 bool result = comp->is_intrinsic_available(mh, directive);
933 DirectivesStack::release(directive);
934 return result;
935 WB_END
936
937 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
938 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
939 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
940 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
941 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
942 return (code != nullptr ? code->comp_level() : CompLevel_none);
943 WB_END
944
945 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
946 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
947 CHECK_JNI_EXCEPTION(env);
948 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
949 if (is_osr) {
950 mh->set_not_osr_compilable("WhiteBox", comp_level);
951 } else {
952 mh->set_not_compilable("WhiteBox", comp_level);
953 }
954 WB_END
955
956 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
957 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
958 CHECK_JNI_EXCEPTION_(env, 0);
959 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
960 uint cnt = 0;
961 MethodData* mdo = mh->method_data();
962 if (mdo != nullptr) {
963 cnt = mdo->decompile_count();
964 }
965 return cnt;
966 WB_END
967
968 // Get the trap count of a method for a specific reason. If the trap count for
969 // that reason did overflow, this includes the overflow trap count of the method.
970 // If 'reason' is null, the sum of the traps for all reasons will be returned.
971 // This number includes the overflow trap count if the trap count for any reason
972 // did overflow.
973 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
974 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
975 CHECK_JNI_EXCEPTION_(env, 0);
976 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
977 uint cnt = 0;
978 MethodData* mdo = mh->method_data();
979 if (mdo != nullptr) {
980 ResourceMark rm(THREAD);
981 char* reason_str = (reason_obj == nullptr) ?
982 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
983 bool overflow = false;
984 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
985 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
986 cnt = mdo->trap_count(reason);
987 // Count in the overflow trap count on overflow
988 if (cnt == (uint)-1) {
989 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
990 }
991 break;
992 } else if (reason_str == nullptr) {
993 uint c = mdo->trap_count(reason);
994 if (c == (uint)-1) {
995 c = mdo->trap_count_limit();
996 if (!overflow) {
997 // Count overflow trap count just once
998 overflow = true;
999 c += mdo->overflow_trap_count();
1000 }
1001 }
1002 cnt += c;
1003 }
1004 }
1005 }
1006 return cnt;
1007 WB_END
1008
1009 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1010 if (reason_obj == nullptr && action_obj == nullptr) {
1011 return Deoptimization::total_deoptimization_count();
1012 }
1013 ResourceMark rm(THREAD);
1014 const char *reason_str = (reason_obj == nullptr) ?
1015 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1016 const char *action_str = (action_obj == nullptr) ?
1017 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1018
1019 return Deoptimization::deoptimization_count(reason_str, action_str);
1020 WB_END
1021
1022 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1023 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1024 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1025 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1026 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1027 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1028 WB_END
1029
1030 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(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->dont_inline();
1035 mh->set_dont_inline(value == JNI_TRUE);
1036 return result;
1037 WB_END
1038
1039 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1040 if (comp_level == CompLevel_any) {
1041 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1042 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1043 } else {
1044 return CompileBroker::queue_size(comp_level);
1045 }
1046 WB_END
1047
1048 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1049 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1050 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1051 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1052 bool result = mh->force_inline();
1053 mh->set_force_inline(value == JNI_TRUE);
1054 return result;
1055 WB_END
1056
1057 #ifdef LINUX
1058 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1059 const char* proc_self_cgroup,
1060 const char* proc_self_mountinfo,
1061 u1* cg_flags) {
1062 CgroupInfo cg_infos[CG_INFO_LENGTH];
1063 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1064 proc_self_cgroup,
1065 proc_self_mountinfo, cg_flags);
1066 }
1067 #endif
1068
1069 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1070 // Screen for unavailable/bad comp level or null method
1071 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1072 if (method == nullptr) {
1073 tty->print_cr("WB error: request to compile null method");
1074 return false;
1075 }
1076 if (comp_level > CompilationPolicy::highest_compile_level()) {
1077 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1078 return false;
1079 }
1080 if (comp == nullptr) {
1081 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1082 return false;
1083 }
1084
1085 // Check if compilation is blocking
1086 methodHandle mh(THREAD, method);
1087 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1088 bool is_blocking = !directive->BackgroundCompilationOption;
1089 DirectivesStack::release(directive);
1090
1091 // Compile method and check result
1092 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1093 MutexLocker mu(THREAD, Compile_lock);
1094 bool is_queued = mh->queued_for_compilation();
1095 if ((!is_blocking && is_queued) || nm != nullptr) {
1096 return true;
1097 }
1098 // Check code again because compilation may be finished before Compile_lock is acquired.
1099 if (bci == InvocationEntryBci) {
1100 nmethod* code = mh->code();
1101 if (code != nullptr) {
1102 return true;
1103 }
1104 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1105 return true;
1106 }
1107 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1108 mh->print_short_name(tty);
1109 tty->cr();
1110 if (is_blocking && is_queued) {
1111 tty->print_cr("WB error: blocking compilation is still in queue!");
1112 }
1113 return false;
1114 }
1115
1116 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1117 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1118 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1119 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1120 WB_END
1121
1122 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1123 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1124 Method* clinit = ik->class_initializer();
1125 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1126 return false;
1127 }
1128 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1129 WB_END
1130
1131 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1132 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1133 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1134
1135 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1136 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1137 bool result = directive->PrintAssemblyOption;
1138 DirectivesStack::release(directive);
1139
1140 return result;
1141 WB_END
1142
1143 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1144 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1145 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1146
1147 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1148
1149 ResourceMark rm(THREAD);
1150 const char* error_msg = nullptr;
1151 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1152 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1153
1154 if (m == nullptr) {
1155 assert(error_msg != nullptr, "Always have an error message");
1156 tty->print_cr("Got error: %s", error_msg);
1157 return -1; // Pattern failed
1158 }
1159
1160 // Pattern works - now check if it matches
1161 int result;
1162 if (m->match(mh, InlineMatcher::force_inline)) {
1163 result = 2; // Force inline match
1164 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1165 result = 1; // Dont inline match
1166 } else {
1167 result = 0; // No match
1168 }
1169 delete m;
1170 return result;
1171 WB_END
1172
1173 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1174 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1175 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1176
1177 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1178
1179 ResourceMark rm;
1180 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1181
1182 const char* error_msg = nullptr;
1183
1184 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1185 if (m == nullptr) {
1186 assert(error_msg != nullptr, "Must have error_msg");
1187 tty->print_cr("Got error: %s", error_msg);
1188 return -1;
1189 }
1190
1191 // Pattern works - now check if it matches
1192 int result = m->matches(mh);
1193 delete m;
1194 assert(result == 0 || result == 1, "Result out of range");
1195 return result;
1196 WB_END
1197
1198 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1199 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1200 CHECK_JNI_EXCEPTION(env);
1201 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1202
1203 MethodData* mdo = mh->method_data();
1204 if (mdo == nullptr) {
1205 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1206 mdo = mh->method_data();
1207 }
1208 mdo->init();
1209 InvocationCounter* icnt = mdo->invocation_counter();
1210 InvocationCounter* bcnt = mdo->backedge_counter();
1211 // set i-counter according to CompilationPolicy::is_method_profiled
1212 icnt->set(Tier4MinInvocationThreshold);
1213 bcnt->set(Tier4CompileThreshold);
1214 WB_END
1215
1216 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1217 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1218 CHECK_JNI_EXCEPTION(env);
1219 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1220 MutexLocker mu(THREAD, Compile_lock);
1221 MethodData* mdo = mh->method_data();
1222 MethodCounters* mcs = mh->method_counters();
1223
1224 if (mdo != nullptr) {
1225 mdo->init();
1226 ResourceMark rm(THREAD);
1227 int arg_count = mdo->method()->size_of_parameters();
1228 for (int i = 0; i < arg_count; i++) {
1229 mdo->set_arg_modified(i, 0);
1230 }
1231 mdo->clean_method_data(/*always_clean*/true);
1232 }
1233
1234 mh->clear_is_not_c1_compilable();
1235 mh->clear_is_not_c2_compilable();
1236 mh->clear_is_not_c2_osr_compilable();
1237 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1238 if (mcs != nullptr) {
1239 mcs->clear_counters();
1240 }
1241 WB_END
1242
1243 template <typename T, int type_enum>
1244 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1245 if (name == nullptr) {
1246 return false;
1247 }
1248 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1249 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1250 CHECK_JNI_EXCEPTION_(env, false);
1251 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1252 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1253 env->ReleaseStringUTFChars(name, flag_name);
1254 return (result == JVMFlag::SUCCESS);
1255 }
1256
1257 template <typename T, int type_enum>
1258 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1259 if (name == nullptr) {
1260 return false;
1261 }
1262 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1263 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1264 CHECK_JNI_EXCEPTION_(env, false);
1265 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1266 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1267 env->ReleaseStringUTFChars(name, flag_name);
1268 return (result == JVMFlag::SUCCESS);
1269 }
1270
1271 template <typename T>
1272 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1273 ResourceMark rm(thread);
1274 jclass clazz = env->FindClass(name->as_C_string());
1275 CHECK_JNI_EXCEPTION_(env, nullptr);
1276 jmethodID methodID = env->GetStaticMethodID(clazz,
1277 vmSymbols::valueOf_name()->as_C_string(),
1278 sig->as_C_string());
1279 CHECK_JNI_EXCEPTION_(env, nullptr);
1280 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1281 CHECK_JNI_EXCEPTION_(env, nullptr);
1282 return result;
1283 }
1284
1285 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1286 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1287 }
1288 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1289 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1290 }
1291 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1292 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1293 }
1294 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1295 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1296 }*/
1297 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1298 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1299 }
1300
1301 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1302 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1303 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1304 CHECK_JNI_EXCEPTION_(env, nullptr);
1305 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1306 env->ReleaseStringUTFChars(name, flag_name);
1307 return result;
1308 }
1309
1310 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1311 const JVMFlag* flag = getVMFlag(thread, env, name);
1312 return (flag != nullptr) && flag->is_constant_in_binary();
1313 WB_END
1314
1315 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1316 const JVMFlag* flag = getVMFlag(thread, env, name);
1317 return (flag != nullptr) && flag->is_default();
1318 WB_END
1319
1320 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1321 const JVMFlag* flag = getVMFlag(thread, env, name);
1322 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1323 WB_END
1324
1325 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1326 bool result;
1327 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1328 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1329 return booleanBox(thread, env, result);
1330 }
1331 return nullptr;
1332 WB_END
1333
1334 template <typename T, int type_enum>
1335 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1336 T result;
1337 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1339 return longBox(thread, env, result);
1340 }
1341 return nullptr;
1342 }
1343
1344 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1345 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1346 WB_END
1347
1348 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1349 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1350 WB_END
1351
1352 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1353 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1354 WB_END
1355
1356 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1357 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1358 WB_END
1359
1360 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1361 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1362 WB_END
1363
1364 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1365 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1366 WB_END
1367
1368 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1369 double result;
1370 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1371 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1372 return doubleBox(thread, env, result);
1373 }
1374 return nullptr;
1375 WB_END
1376
1377 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1378 ccstr ccstrResult;
1379 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1380 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1381 jstring result = env->NewStringUTF(ccstrResult);
1382 CHECK_JNI_EXCEPTION_(env, nullptr);
1383 return result;
1384 }
1385 return nullptr;
1386 WB_END
1387
1388 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1389 bool result = value == JNI_TRUE ? true : false;
1390 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1391 WB_END
1392
1393 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1394 int result = checked_cast<int>(value);
1395 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1396 WB_END
1397
1398 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1399 uint result = checked_cast<uint>(value);
1400 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1401 WB_END
1402
1403 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1404 intx result = value;
1405 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1406 WB_END
1407
1408 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1409 uintx result = value;
1410 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1411 WB_END
1412
1413 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1414 uint64_t result = value;
1415 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1416 WB_END
1417
1418 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1419 size_t result = value;
1420 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1421 WB_END
1422
1423 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1424 double result = value;
1425 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1426 WB_END
1427
1428 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1429 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1430 const char* ccstrValue;
1431 if (value == nullptr) {
1432 ccstrValue = nullptr;
1433 }
1434 else {
1435 ccstrValue = env->GetStringUTFChars(value, nullptr);
1436 CHECK_JNI_EXCEPTION(env);
1437 }
1438 {
1439 ccstr param = ccstrValue;
1440 ThreadInVMfromNative ttvfn(thread); // back to VM
1441 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1442 assert(param == nullptr, "old value is freed automatically and not returned");
1443 }
1444 }
1445 if (value != nullptr) {
1446 env->ReleaseStringUTFChars(value, ccstrValue);
1447 }
1448 WB_END
1449
1450 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1451 WhiteBox::compilation_locked = true;
1452 WB_END
1453
1454 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1455 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1456 WhiteBox::compilation_locked = false;
1457 mo.notify_all();
1458 WB_END
1459
1460 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1461 ResourceMark rm(THREAD);
1462 int len;
1463 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1464 return (StringTable::lookup(name, len) != nullptr);
1465 WB_END
1466
1467 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1468 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1469 Universe::heap()->collect(GCCause::_wb_full_gc);
1470 #if INCLUDE_G1GC || INCLUDE_SERIALGC
1471 if (UseG1GC || UseSerialGC) {
1472 // Needs to be cleared explicitly for G1 and Serial GC.
1473 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1474 }
1475 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC
1476 WB_END
1477
1478 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1479 Universe::heap()->collect(GCCause::_wb_young_gc);
1480 WB_END
1481
1482 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1483 // static+volatile in order to force the read to happen
1484 // (not be eliminated by the compiler)
1485 static char c;
1486 static volatile char* p;
1487
1488 p = os::reserve_memory(os::vm_allocation_granularity());
1489 if (p == nullptr) {
1490 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1491 }
1492
1493 c = *p;
1494 WB_END
1495
1496 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1497 const char* features = VM_Version::features_string();
1498 ThreadToNativeFromVM ttn(thread);
1499 jstring features_string = env->NewStringUTF(features);
1500
1501 CHECK_JNI_EXCEPTION_(env, nullptr);
1502
1503 return features_string;
1504 WB_END
1505
1506 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1507 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1508 return CodeCache::get_code_heap(code)->code_blob_type();
1509 }
1510
1511 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1512 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1513 return CodeCache::get_code_heap(blob_type);
1514 }
1515
1516 struct CodeBlobStub {
1517 CodeBlobStub(const CodeBlob* blob) :
1518 name(os::strdup(blob->name())),
1519 size(blob->size()),
1520 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1521 address((jlong) blob) { }
1522 ~CodeBlobStub() { os::free((void*) name); }
1523 const char* const name;
1524 const jint size;
1525 const jint blob_type;
1526 const jlong address;
1527 };
1528
1529 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1530 ResourceMark rm;
1531 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1532 CHECK_JNI_EXCEPTION_(env, nullptr);
1533 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1534
1535 jstring name = env->NewStringUTF(cb->name);
1536 CHECK_JNI_EXCEPTION_(env, nullptr);
1537 env->SetObjectArrayElement(result, 0, name);
1538
1539 jobject obj = integerBox(thread, env, cb->size);
1540 CHECK_JNI_EXCEPTION_(env, nullptr);
1541 env->SetObjectArrayElement(result, 1, obj);
1542
1543 obj = integerBox(thread, env, cb->blob_type);
1544 CHECK_JNI_EXCEPTION_(env, nullptr);
1545 env->SetObjectArrayElement(result, 2, obj);
1546
1547 obj = longBox(thread, env, cb->address);
1548 CHECK_JNI_EXCEPTION_(env, nullptr);
1549 env->SetObjectArrayElement(result, 3, obj);
1550
1551 return result;
1552 }
1553
1554 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1555 ResourceMark rm(THREAD);
1556 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1557 CHECK_JNI_EXCEPTION_(env, nullptr);
1558 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1559 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1560 jobjectArray result = nullptr;
1561 if (code == nullptr) {
1562 return result;
1563 }
1564 int comp_level = code->comp_level();
1565 int insts_size = code->insts_size();
1566
1567 ThreadToNativeFromVM ttn(thread);
1568 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1569 CHECK_JNI_EXCEPTION_(env, nullptr);
1570 result = env->NewObjectArray(5, clazz, nullptr);
1571 if (result == nullptr) {
1572 return result;
1573 }
1574
1575 CodeBlobStub stub(code);
1576 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1577 CHECK_JNI_EXCEPTION_(env, nullptr);
1578 env->SetObjectArrayElement(result, 0, codeBlob);
1579
1580 jobject level = integerBox(thread, env, comp_level);
1581 CHECK_JNI_EXCEPTION_(env, nullptr);
1582 env->SetObjectArrayElement(result, 1, level);
1583
1584 jbyteArray insts = env->NewByteArray(insts_size);
1585 CHECK_JNI_EXCEPTION_(env, nullptr);
1586 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1587 env->SetObjectArrayElement(result, 2, insts);
1588
1589 jobject id = integerBox(thread, env, code->compile_id());
1590 CHECK_JNI_EXCEPTION_(env, nullptr);
1591 env->SetObjectArrayElement(result, 3, id);
1592
1593 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1594 CHECK_JNI_EXCEPTION_(env, nullptr);
1595 env->SetObjectArrayElement(result, 4, entry_point);
1596
1597 return result;
1598 WB_END
1599
1600 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1601 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1602 BufferBlob* blob;
1603 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1604 if (full_size < size) {
1605 full_size += align_up(size - full_size, oopSize);
1606 }
1607 {
1608 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1609 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1610 if (blob != nullptr) {
1611 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1612 }
1613 }
1614 // Track memory usage statistic after releasing CodeCache_lock
1615 MemoryService::track_code_cache_memory_usage();
1616 return blob;
1617 }
1618
1619 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1620 if (size < 0) {
1621 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1622 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1623 }
1624 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1625 WB_END
1626
1627 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1628 if (addr == 0) {
1629 return;
1630 }
1631 BufferBlob::free((BufferBlob*) addr);
1632 WB_END
1633
1634 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1635 ResourceMark rm;
1636 GrowableArray<CodeBlobStub*> blobs;
1637 {
1638 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1639 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1640 if (heap == nullptr) {
1641 return nullptr;
1642 }
1643 for (CodeBlob* cb = (CodeBlob*) heap->first();
1644 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1645 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1646 new (stub) CodeBlobStub(cb);
1647 blobs.append(stub);
1648 }
1649 }
1650 ThreadToNativeFromVM ttn(thread);
1651 jobjectArray result = nullptr;
1652 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1653 CHECK_JNI_EXCEPTION_(env, nullptr);
1654 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1655 CHECK_JNI_EXCEPTION_(env, nullptr);
1656 if (result == nullptr) {
1657 return result;
1658 }
1659 int i = 0;
1660 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1661 it != blobs.end(); ++it) {
1662 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1663 CHECK_JNI_EXCEPTION_(env, nullptr);
1664 env->SetObjectArrayElement(result, i, obj);
1665 CHECK_JNI_EXCEPTION_(env, nullptr);
1666 ++i;
1667 }
1668 return result;
1669 WB_END
1670
1671 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1672 return CompileBroker::get_compilation_activity_mode();
1673 WB_END
1674
1675 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1676 if (addr == 0) {
1677 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1678 "WB_GetCodeBlob: addr is null");
1679 }
1680 ThreadToNativeFromVM ttn(thread);
1681 CodeBlobStub stub((CodeBlob*) addr);
1682 return codeBlob2objectArray(thread, env, &stub);
1683 WB_END
1684
1685 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1686 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1687 CHECK_JNI_EXCEPTION_(env, 0);
1688 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1689 return (jlong) mh->method_data();
1690 WB_END
1691
1692 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1693 return (jlong) thread->stack_size();
1694 WB_END
1695
1696 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1697 return (jlong) thread->stack_overflow_state()->stack_available(
1698 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1699 WB_END
1700
1701
1702 int WhiteBox::array_bytes_to_length(size_t bytes) {
1703 return Array<u1>::bytes_to_length(bytes);
1704 }
1705
1706 ///////////////
1707 // MetaspaceTestContext and MetaspaceTestArena
1708 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1709 metaspace::MetaspaceTestContext* context =
1710 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1711 return (jlong)p2i(context);
1712 WB_END
1713
1714 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1715 delete (metaspace::MetaspaceTestContext*) context;
1716 WB_END
1717
1718 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1719 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1720 context0->purge_area();
1721 WB_END
1722
1723 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1724 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1725 context0->print_on(tty);
1726 WB_END
1727
1728 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1729 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1730 return context0->committed_words();
1731 WB_END
1732
1733 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1734 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1735 return context0->used_words();
1736 WB_END
1737
1738 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1739 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1740 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1741 return (jlong)p2i(context0->create_arena(type));
1742 WB_END
1743
1744 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1745 delete (metaspace::MetaspaceTestArena*) arena;
1746 WB_END
1747
1748 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1749 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1750 MetaWord* p = arena0->allocate((size_t) word_size);
1751 return (jlong)p2i(p);
1752 WB_END
1753
1754 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1755 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1756 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1757 WB_END
1758
1759 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1760 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1761 WB_END
1762
1763 //////////////
1764
1765 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1766 if (size < 0) {
1767 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1768 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1769 }
1770
1771 oop class_loader_oop = JNIHandles::resolve(class_loader);
1772 ClassLoaderData* cld = class_loader_oop != nullptr
1773 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1774 : ClassLoaderData::the_null_class_loader_data();
1775
1776 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1777
1778 return (jlong)(uintptr_t)metadata;
1779 WB_END
1780
1781 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1782 jstring version, jstring location, jobjectArray packages))
1783 Handle h_module (THREAD, JNIHandles::resolve(module));
1784 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1785 WB_END
1786
1787 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1788 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1789 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1790 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1791 WB_END
1792
1793 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1794 Handle h_module (THREAD, JNIHandles::resolve(module));
1795 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1796 WB_END
1797
1798 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1799 Handle h_module (THREAD, JNIHandles::resolve(module));
1800 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1801 WB_END
1802
1803 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1804 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1805 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1806 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1807 WB_END
1808
1809 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1810 if (inc < 0) {
1811 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1812 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1813 }
1814
1815 jlong max_size_t = (jlong) ((size_t) -1);
1816 if (inc > max_size_t) {
1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1818 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1819 }
1820
1821 size_t new_cap_until_GC = 0;
1822 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1823 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1824 if (!success) {
1825 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1826 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1827 "due to contention with another thread");
1828 }
1829 return (jlong) new_cap_until_GC;
1830 WB_END
1831
1832 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1833 return (jlong) MetaspaceGC::capacity_until_GC();
1834 WB_END
1835
1836 // The function is only valid when CDS is available.
1837 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1838 #if INCLUDE_CDS
1839 return (jlong)MetaspaceShared::core_region_alignment();
1840 #else
1841 ShouldNotReachHere();
1842 return 0L;
1843 #endif
1844 WB_END
1845
1846 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1847 oop obj_oop = JNIHandles::resolve(obj);
1848 return (jboolean) obj_oop->mark().has_monitor();
1849 WB_END
1850
1851 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1852 return (jint) LockStack::CAPACITY;
1853 WB_END
1854
1855 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1856 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1857 WB_END
1858
1859 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1860 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1861 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1862 WB_END
1863
1864 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1865 VM_ForceSafepoint force_safepoint_op;
1866 VMThread::execute(&force_safepoint_op);
1867 WB_END
1868
1869 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1870 nullStream dev_null;
1871 ClassLoaderStatsVMOperation force_op(&dev_null);
1872 VMThread::execute(&force_op);
1873 WB_END
1874
1875 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1876 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1877 return (jlong) ik->constants();
1878 WB_END
1879
1880 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1881 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1882 objArrayOop resolved_refs= ik->constants()->resolved_references();
1883 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1884 WB_END
1885
1886 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1887 return ConstantPool::encode_invokedynamic_index(index);
1888 WB_END
1889
1890 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1891 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1892 ConstantPool* cp = ik->constants();
1893 if (cp->cache() == nullptr) {
1894 return -1;
1895 }
1896 return cp->resolved_field_entries_length();
1897 WB_END
1898
1899 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1900 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1901 ConstantPool* cp = ik->constants();
1902 if (cp->cache() == nullptr) {
1903 return -1;
1904 }
1905 return cp->resolved_field_entry_at(index)->constant_pool_index();
1906 WB_END
1907
1908 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1909 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1910 ConstantPool* cp = ik->constants();
1911 if (cp->cache() == nullptr) {
1912 return -1;
1913 }
1914 return cp->resolved_method_entries_length();
1915 WB_END
1916
1917 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1918 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1919 ConstantPool* cp = ik->constants();
1920 if (cp->cache() == nullptr) {
1921 return -1;
1922 }
1923 return cp->resolved_method_entry_at(index)->constant_pool_index();
1924 WB_END
1925
1926 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1927 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1928 ConstantPool* cp = ik->constants();
1929 if (cp->cache() == nullptr) {
1930 return -1;
1931 }
1932 return cp->resolved_indy_entries_length();
1933 WB_END
1934
1935 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1936 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1937 ConstantPool* cp = ik->constants();
1938 if (cp->cache() == nullptr) {
1939 return -1;
1940 }
1941 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1942 WB_END
1943
1944 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
1945 ThreadToNativeFromVM ttnfv(thread);
1946 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1947 ResourceMark rm;
1948 stringStream st;
1949 {
1950 ThreadInVMfromNative ttvfn(thread); // back to VM
1951 ClassPrinter::print_classes(c, flags, &st);
1952 }
1953 jstring result = env->NewStringUTF(st.freeze());
1954 CHECK_JNI_EXCEPTION_(env, nullptr);
1955 return result;
1956 WB_END
1957
1958 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
1959 ThreadToNativeFromVM ttnfv(thread);
1960 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1961 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
1962 ResourceMark rm;
1963 stringStream st;
1964 {
1965 ThreadInVMfromNative ttvfn(thread); // back to VM
1966 ClassPrinter::print_methods(c, m, flags, &st);
1967 }
1968 jstring result = env->NewStringUTF(st.freeze());
1969 CHECK_JNI_EXCEPTION_(env, nullptr);
1970 return result;
1971 WB_END
1972
1973 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1974 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1975 VMThread::execute(&clear_ics);
1976 WB_END
1977
1978 template <typename T>
1979 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1980 assert(value != nullptr, "sanity");
1981 if (method == nullptr || name == nullptr) {
1982 return false;
1983 }
1984 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1985 CHECK_JNI_EXCEPTION_(env, false);
1986 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1987 // can't be in VM when we call JNI
1988 ThreadToNativeFromVM ttnfv(thread);
1989 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1990 CHECK_JNI_EXCEPTION_(env, false);
1991 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1992 env->ReleaseStringUTFChars(name, flag_name);
1993 if (option == CompileCommand::Unknown) {
1994 return false;
1995 }
1996 if (!CompilerOracle::option_matches_type(option, *value)) {
1997 return false;
1998 }
1999 return CompilerOracle::has_option_value(mh, option, *value);
2000 }
2001
2002 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2003 bool result;
2004 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2005 // can't be in VM when we call JNI
2006 ThreadToNativeFromVM ttnfv(thread);
2007 return booleanBox(thread, env, result);
2008 }
2009 return nullptr;
2010 WB_END
2011
2012 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2013 intx result;
2014 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2015 // can't be in VM when we call JNI
2016 ThreadToNativeFromVM ttnfv(thread);
2017 return longBox(thread, env, result);
2018 }
2019 return nullptr;
2020 WB_END
2021
2022 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2023 uintx result;
2024 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2025 // can't be in VM when we call JNI
2026 ThreadToNativeFromVM ttnfv(thread);
2027 return longBox(thread, env, result);
2028 }
2029 return nullptr;
2030 WB_END
2031
2032 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2033 double result;
2034 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2035 // can't be in VM when we call JNI
2036 ThreadToNativeFromVM ttnfv(thread);
2037 return doubleBox(thread, env, result);
2038 }
2039 return nullptr;
2040 WB_END
2041
2042 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2043 ccstr ccstrResult;
2044 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2045 // can't be in VM when we call JNI
2046 ThreadToNativeFromVM ttnfv(thread);
2047 jstring result = env->NewStringUTF(ccstrResult);
2048 CHECK_JNI_EXCEPTION_(env, nullptr);
2049 return result;
2050 }
2051 return nullptr;
2052 WB_END
2053
2054 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2055 const char* p = CDSConfig::default_archive_path();
2056 ThreadToNativeFromVM ttn(thread);
2057 jstring path_string = env->NewStringUTF(p);
2058
2059 CHECK_JNI_EXCEPTION_(env, nullptr);
2060
2061 return path_string;
2062 WB_END
2063
2064 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2065 return UseSharedSpaces;
2066 WB_END
2067
2068 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2069 #if INCLUDE_CDS
2070 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2071 #else
2072 ShouldNotReachHere();
2073 return (jint)-1;
2074 #endif
2075 WB_END
2076
2077 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2078 #if INCLUDE_CDS
2079 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2080 #else
2081 ShouldNotReachHere();
2082 return (jint)-1;
2083 #endif
2084 WB_END
2085
2086 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2087 return FileMapInfo::memory_mapping_failed();
2088 WB_END
2089
2090 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2091 ResourceMark rm(THREAD);
2092 oop str_oop = JNIHandles::resolve(str);
2093 int length;
2094 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2095 return StringTable::lookup_shared(chars, length) == str_oop;
2096 WB_END
2097
2098 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2099 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2100 WB_END
2101
2102 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2103 return ArchiveHeapLoader::is_mapped();
2104 WB_END
2105
2106 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2107 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2108 if (!k->is_instance_klass()) {
2109 return;
2110 }
2111 InstanceKlass *ik = InstanceKlass::cast(k);
2112 ik->link_class(THREAD); // may throw verification error
2113 WB_END
2114
2115 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2116 return ArchiveHeapLoader::is_mapped();
2117 WB_END
2118
2119 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2120 #if INCLUDE_CDS
2121 return true;
2122 #else
2123 return false;
2124 #endif // INCLUDE_CDS
2125 WB_END
2126
2127 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2128 #if COMPILER2_OR_JVMCI
2129 return true;
2130 #else
2131 return false;
2132 #endif
2133 WB_END
2134
2135 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2136 #if INCLUDE_JVMCI
2137 return JVMCIGlobals::gc_supports_jvmci();
2138 #else
2139 return false;
2140 #endif
2141 WB_END
2142
2143 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2144 return HeapShared::can_write();
2145 WB_END
2146
2147
2148 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2149 #if INCLUDE_JFR
2150 return true;
2151 #else
2152 return false;
2153 #endif // INCLUDE_JFR
2154 WB_END
2155
2156 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2157 #if defined(DTRACE_ENABLED)
2158 return true;
2159 #else
2160 return false;
2161 #endif // DTRACE_ENABLED
2162 WB_END
2163
2164 #if INCLUDE_CDS
2165
2166 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2167 ResourceMark rm;
2168 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2169 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2170 return result;
2171 WB_END
2172
2173 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2174 ResourceMark rm;
2175 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2176 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2177 return result;
2178 WB_END
2179
2180 #endif // INCLUDE_CDS
2181
2182 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2183 class ReadMonitorsClosure : public HandshakeClosure {
2184 jboolean _executed;
2185
2186 void do_thread(Thread* th) {
2187 JavaThread* jt = JavaThread::cast(th);
2188 ResourceMark rm;
2189
2190 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2191
2192 if (!jt->has_last_Java_frame()) {
2193 return;
2194 }
2195 RegisterMap rmap(jt,
2196 RegisterMap::UpdateMap::include,
2197 RegisterMap::ProcessFrames::include,
2198 RegisterMap::WalkContinuation::skip);
2199 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2200 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2201 if (monitors != nullptr) {
2202 int len = monitors->length();
2203 // Walk monitors youngest to oldest
2204 for (int i = len - 1; i >= 0; i--) {
2205 MonitorInfo* mon_info = monitors->at(i);
2206 if (mon_info->eliminated()) continue;
2207 oop owner = mon_info->owner();
2208 if (owner != nullptr) {
2209 info->append(mon_info);
2210 }
2211 }
2212 }
2213 }
2214 _executed = true;
2215 }
2216
2217 public:
2218 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2219 jboolean executed() const { return _executed; }
2220 };
2221
2222 ReadMonitorsClosure rmc;
2223 if (thread_handle != nullptr) {
2224 ThreadsListHandle tlh;
2225 JavaThread* target = nullptr;
2226 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2227 if (is_alive) {
2228 Handshake::execute(&rmc, &tlh, target);
2229 }
2230 }
2231 return rmc.executed();
2232 WB_END
2233
2234 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2235 class TraceSelfClosure : public HandshakeClosure {
2236 jint _num_threads_completed;
2237
2238 void do_thread(Thread* th) {
2239 JavaThread* jt = JavaThread::cast(th);
2240 ResourceMark rm;
2241
2242 jt->print_on(tty);
2243 jt->print_stack_on(tty);
2244 tty->cr();
2245 Atomic::inc(&_num_threads_completed);
2246 }
2247
2248 public:
2249 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2250
2251 jint num_threads_completed() const { return _num_threads_completed; }
2252 };
2253 TraceSelfClosure tsc(Thread::current());
2254
2255 if (all_threads) {
2256 Handshake::execute(&tsc);
2257 } else if (thread_handle != nullptr) {
2258 ThreadsListHandle tlh;
2259 JavaThread* target = nullptr;
2260 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2261 if (is_alive) {
2262 Handshake::execute(&tsc, &tlh, target);
2263 }
2264 }
2265 return tsc.num_threads_completed();
2266 WB_END
2267
2268 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2269 class TraceSelfClosure : public AsyncHandshakeClosure {
2270 JavaThread* _self;
2271 void do_thread(Thread* th) {
2272 assert(th->is_Java_thread(), "sanity");
2273 // AsynchHandshake handshakes are only executed by target.
2274 assert(_self == th, "Must be");
2275 assert(Thread::current() == th, "Must be");
2276 JavaThread* jt = JavaThread::cast(th);
2277 ResourceMark rm;
2278 jt->print_on(tty);
2279 jt->print_stack_on(tty);
2280 tty->cr();
2281 }
2282
2283 public:
2284 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2285 };
2286 if (thread_handle != nullptr) {
2287 ThreadsListHandle tlh;
2288 JavaThread* target = nullptr;
2289 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2290 if (is_alive) {
2291 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2292 Handshake::execute(tsc, target);
2293 }
2294 }
2295 WB_END
2296
2297 static volatile int _emulated_lock = 0;
2298
2299 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2300 JavaThread* self = JavaThread::current();
2301
2302 {
2303 // Before trying to acquire the lock transition into a safepoint safe state.
2304 // Otherwise if either suspender or suspendee blocks for a safepoint
2305 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2306 // the lock without allowing the safepoint to progress.
2307 ThreadBlockInVM tbivm(self);
2308
2309 // We will deadlock here if we are 'suspender' and 'suspendee'
2310 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2311 // at the right place.
2312 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2313 assert(_emulated_lock == 1, "Must be locked");
2314
2315 // Sleep much longer in suspendee to force situation where
2316 // 'suspender' is waiting above to acquire lock.
2317 os::naked_short_sleep(suspender ? 1 : 10);
2318 }
2319 Atomic::store(&_emulated_lock, 0);
2320 WB_END
2321
2322 // Some convenience methods to deal with objects from java
2323 int WhiteBox::offset_for_field(const char* field_name, oop object,
2324 Symbol* signature_symbol) {
2325 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2326
2327 //Get the class of our object
2328 Klass* arg_klass = object->klass();
2329 //Turn it into an instance-klass
2330 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2331
2332 //Create symbols to look for in the class
2333 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2334
2335 //To be filled in with an offset of the field we're looking for
2336 fieldDescriptor fd;
2337
2338 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2339 if (res == nullptr) {
2340 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2341 name_symbol->as_C_string());
2342 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2343 }
2344
2345 //fetch the field at the offset we've found
2346 int dest_offset = fd.offset();
2347
2348 return dest_offset;
2349 }
2350
2351
2352 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2353 int offset = offset_for_field(field_name, object,
2354 vmSymbols::string_signature());
2355 oop string = object->obj_field(offset);
2356 if (string == nullptr) {
2357 return nullptr;
2358 }
2359 const char* ret = java_lang_String::as_utf8_string(string);
2360 return ret;
2361 }
2362
2363 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2364 int offset =
2365 offset_for_field(field_name, object, vmSymbols::bool_signature());
2366 bool ret = (object->bool_field(offset) == JNI_TRUE);
2367 return ret;
2368 }
2369
2370 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2371 ResourceMark rm;
2372 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2373 const char* klass_name = klass->external_name();
2374
2375 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2376
2377 // one by one registration natives for exception catching
2378 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2379 CHECK_JNI_EXCEPTION(env);
2380 for (int i = 0, n = method_count; i < n; ++i) {
2381 // Skip dummy entries
2382 if (method_array[i].fnPtr == nullptr) continue;
2383 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2384 jthrowable throwable_obj = env->ExceptionOccurred();
2385 if (throwable_obj != nullptr) {
2386 env->ExceptionClear();
2387 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2388 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2389 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2390 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2391 klass_name, method_array[i].name, method_array[i].signature);
2392 }
2393 } else {
2394 // Registration failed unexpectedly.
2395 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2396 klass_name, method_array[i].name, method_array[i].signature);
2397 env->UnregisterNatives(wbclass);
2398 break;
2399 }
2400 }
2401 }
2402 }
2403
2404 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2405 // can't be in VM when we call JNI
2406 ThreadToNativeFromVM ttnfv(thread);
2407 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2408 CHECK_JNI_EXCEPTION_(env, 0);
2409 int ret;
2410 {
2411 ThreadInVMfromNative ttvfn(thread); // back to VM
2412 ret = DirectivesParser::parse_string(dir, tty);
2413 }
2414 env->ReleaseStringUTFChars(compDirect, dir);
2415 // -1 for error parsing directive. Return 0 as number of directives added.
2416 if (ret == -1) {
2417 ret = 0;
2418 }
2419 return (jint) ret;
2420 WB_END
2421
2422 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2423 DirectivesStack::pop(count);
2424 WB_END
2425
2426 // Checks that the library libfile has the noexecstack bit set.
2427 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2428 jboolean ret = false;
2429 #ifdef LINUX
2430 // Can't be in VM when we call JNI.
2431 ThreadToNativeFromVM ttnfv(thread);
2432 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2433 CHECK_JNI_EXCEPTION_(env, 0);
2434 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2435 env->ReleaseStringUTFChars(libfile, lf);
2436 #endif
2437 return ret;
2438 WB_END
2439
2440 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2441 LINUX_ONLY(return OSContainer::is_containerized();)
2442 return false;
2443 WB_END
2444
2445 // Physical memory of the host machine (including containers)
2446 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2447 LINUX_ONLY(return os::Linux::physical_memory();)
2448 return os::physical_memory();
2449 WB_END
2450
2451 // Physical swap of the host machine (including containers), Linux only.
2452 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2453 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2454 return -1; // Not used/implemented on other platforms
2455 WB_END
2456
2457 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2458 jobject o,
2459 jstring proc_cgroups,
2460 jstring proc_self_cgroup,
2461 jstring proc_self_mountinfo))
2462 jint ret = 0;
2463 #ifdef LINUX
2464 ThreadToNativeFromVM ttnfv(thread);
2465 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2466 CHECK_JNI_EXCEPTION_(env, 0);
2467 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2468 CHECK_JNI_EXCEPTION_(env, 0);
2469 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2470 CHECK_JNI_EXCEPTION_(env, 0);
2471 u1 cg_type_flags = 0;
2472 // This sets cg_type_flags
2473 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2474 ret = (jint)cg_type_flags;
2475 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2476 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2477 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2478 #endif
2479 return ret;
2480 WB_END
2481
2482 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2483 os::print_os_info(tty);
2484 WB_END
2485
2486 // Elf decoder
2487 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2488 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2489 ElfFile::_do_not_cache_elf_section = true;
2490 #endif
2491 WB_END
2492
2493 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2494 return (jlong) ResolvedMethodTable::items_count();
2495 WB_END
2496
2497 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2498 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2499 WB_END
2500
2501 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2502 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2503 // Return size in bytes.
2504 return k->size() * wordSize;
2505 WB_END
2506
2507 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2508 // It explains how the thread's priority field is used for test state coordination.
2509 //
2510 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2511 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2512 jlong tid = java_lang_Thread::thread_id(target_oop);
2513 JavaThread* target = java_lang_Thread::thread(target_oop);
2514
2515 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2516 ThreadsListHandle tlh;
2517
2518 // Look up the target thread by tid to ensure it is present
2519 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2520 if (t == nullptr) {
2521 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2522 }
2523
2524 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2525 // Allow target to terminate by boosting priority
2526 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2527
2528 // Now wait for the target to terminate
2529 while (!target->is_terminated()) {
2530 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2531 os::naked_short_sleep(0);
2532 }
2533
2534 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2535
2536 // Now release the GC inducing thread - we have to re-resolve the external oop that
2537 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2538 oop original = JNIHandles::resolve_non_null(target_handle);
2539 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2540
2541 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2542
2543 // The Java code should be creating garbage and triggering GC, which would potentially move
2544 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2545 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2546 // kick in.
2547 for (int i = 0; i < 5; i++) {
2548 oop original = JNIHandles::resolve_non_null(target_handle);
2549 oop current = t->threadObj();
2550 if (original != current) {
2551 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2552 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2553 } else {
2554 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2555 ThreadBlockInVM tbivm(thread);
2556 os::naked_short_sleep(50);
2557 }
2558 }
2559 WB_END
2560
2561 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2562 ResourceMark rm; // for verify
2563 stringStream st;
2564 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2565 frame* current_frame = fst.current();
2566 if (log) {
2567 current_frame->print_value_on(&st, nullptr);
2568 }
2569 current_frame->verify(fst.register_map());
2570 }
2571 if (log) {
2572 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2573 tty->print_raw(st.freeze());
2574 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2575 }
2576 WB_END
2577
2578 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2579 #if INCLUDE_JVMTI
2580 return JNI_TRUE;
2581 #else
2582 return JNI_FALSE;
2583 #endif
2584 WB_END
2585
2586 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2587 os::naked_short_sleep(time);
2588 WB_END
2589
2590 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2591 ThreadToNativeFromVM ttn(thread);
2592 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2593 CHECK_JNI_EXCEPTION_(env, nullptr);
2594 return info_string;
2595 WB_END
2596
2597 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2598 GCLocker::lock_critical(thread);
2599 WB_END
2600
2601 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2602 GCLocker::unlock_critical(thread);
2603 WB_END
2604
2605 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2606 #if INCLUDE_G1GC
2607 if (!UseG1GC) {
2608 ShouldNotReachHere();
2609 return;
2610 }
2611 oop obj = JNIHandles::resolve(o);
2612 G1CollectedHeap::heap()->pin_object(thread, obj);
2613 #else
2614 ShouldNotReachHere();
2615 #endif // INCLUDE_G1GC
2616 WB_END
2617
2618 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2619 #if INCLUDE_G1GC
2620 if (!UseG1GC) {
2621 ShouldNotReachHere();
2622 return;
2623 }
2624 oop obj = JNIHandles::resolve(o);
2625 G1CollectedHeap::heap()->unpin_object(thread, obj);
2626 #else
2627 ShouldNotReachHere();
2628 #endif // INCLUDE_G1GC
2629 WB_END
2630
2631 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2632 if (!Continuations::enabled()) {
2633 tty->print_cr("WB error: must be Continuations::enabled()!");
2634 return JNI_FALSE;
2635 }
2636 jboolean result = false;
2637 #if INCLUDE_JVMTI
2638 if (enable) {
2639 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2640 } else {
2641 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2642 }
2643 #endif
2644 return result;
2645 WB_END
2646
2647 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2648 void* const from = (void*)addr;
2649 void* const to = (void*)(addr + size);
2650 if (from > to) {
2651 os::pretouch_memory(from, to, os::vm_page_size());
2652 }
2653 WB_END
2654
2655 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2656 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2657 WB_END
2658
2659 #define CC (char*)
2660
2661 static JNINativeMethod methods[] = {
2662 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2663 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2664 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2665 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2666 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2667 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2668 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2669 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2670 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2671 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2672 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2673 {CC"parseCommandLine0",
2674 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2675 (void*) &WB_ParseCommandLine
2676 },
2677 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2678 (void*)&WB_AddToBootstrapClassLoaderSearch},
2679 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2680 (void*)&WB_AddToSystemClassLoaderSearch},
2681 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2682 (void*)&WB_GetCompressedOopsMaxHeapSize},
2683 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2684 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2685 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2686 #if INCLUDE_CDS
2687 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2688 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2689 #endif
2690 #if INCLUDE_G1GC
2691 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2692 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2693 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2694 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2695 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2696 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2697 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2698 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2699 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2700 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2701 (void*)&WB_G1AuxiliaryMemoryUsage },
2702 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2703 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2704 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2705 #endif // INCLUDE_G1GC
2706 #if INCLUDE_PARALLELGC
2707 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2708 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2709 #endif
2710 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2711 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2712 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2713 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2714 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2715 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2716 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2717 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2718 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2719 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2720 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2721 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2722 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2723 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2724 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2725 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2726 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2727 (void*)&WB_DeoptimizeMethod },
2728 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2729 (void*)&WB_IsMethodCompiled },
2730 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2731 (void*)&WB_IsMethodCompilable},
2732 {CC"isMethodQueuedForCompilation0",
2733 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2734 {CC"isIntrinsicAvailable0",
2735 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2736 (void*)&WB_IsIntrinsicAvailable},
2737 {CC"makeMethodNotCompilable0",
2738 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2739 {CC"testSetDontInlineMethod0",
2740 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2741 {CC"getMethodCompilationLevel0",
2742 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2743 {CC"getMethodDecompileCount0",
2744 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2745 {CC"getMethodTrapCount0",
2746 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2747 (void*)&WB_GetMethodTrapCount},
2748 {CC"getDeoptCount0",
2749 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2750 {CC"getMethodEntryBci0",
2751 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2752 {CC"getCompileQueueSize",
2753 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2754 {CC"testSetForceInlineMethod0",
2755 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2756 {CC"enqueueMethodForCompilation0",
2757 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2758 {CC"enqueueInitializerForCompilation0",
2759 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2760 {CC"markMethodProfiled",
2761 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2762 {CC"clearMethodState0",
2763 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2764 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2765 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2766 {CC"matchesMethod",
2767 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2768 (void*)&WB_MatchesMethod},
2769 {CC"matchesInline",
2770 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2771 (void*)&WB_MatchesInline},
2772 {CC"shouldPrintAssembly",
2773 CC"(Ljava/lang/reflect/Executable;I)Z",
2774 (void*)&WB_ShouldPrintAssembly},
2775
2776 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2777 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2778 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2779 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2780 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2781 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2782 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2783 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2784 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2785 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2786 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2787 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2788 (void*)&WB_SetStringVMFlag},
2789 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2790 (void*)&WB_GetBooleanVMFlag},
2791 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2792 (void*)&WB_GetIntVMFlag},
2793 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2794 (void*)&WB_GetUintVMFlag},
2795 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2796 (void*)&WB_GetIntxVMFlag},
2797 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2798 (void*)&WB_GetUintxVMFlag},
2799 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2800 (void*)&WB_GetUint64VMFlag},
2801 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2802 (void*)&WB_GetSizeTVMFlag},
2803 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2804 (void*)&WB_GetDoubleVMFlag},
2805 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2806 (void*)&WB_GetStringVMFlag},
2807 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2808 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2809 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2810 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2811 {CC"allocateMetaspace",
2812 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2813 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2814 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2815 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2816 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2817 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2818 (void*)&WB_GetNMethod },
2819 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2820 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2821 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2822 {CC"getCompilationActivityMode",
2823 CC"()I", (void*)&WB_GetCompilationActivityMode},
2824 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2825 (void*)&WB_GetMethodData },
2826 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2827 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2828 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2829 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2830 (void*)&WB_DefineModule },
2831 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2832 (void*)&WB_AddModuleExports },
2833 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2834 (void*)&WB_AddReadsModule },
2835 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2836 (void*)&WB_AddModuleExportsToAllUnnamed },
2837 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2838 (void*)&WB_AddModuleExportsToAll },
2839 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2840 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2841 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2842 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2843 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2844 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2845 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2846 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2847 {CC"encodeConstantPoolIndyIndex0",
2848 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2849 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2850 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2851 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2852 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2853 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2854 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2855 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2856 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2857 {CC"getMethodBooleanOption",
2858 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2859 (void*)&WB_GetMethodBooleaneOption},
2860 {CC"getMethodIntxOption",
2861 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2862 (void*)&WB_GetMethodIntxOption},
2863 {CC"getMethodUintxOption",
2864 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2865 (void*)&WB_GetMethodUintxOption},
2866 {CC"getMethodDoubleOption",
2867 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2868 (void*)&WB_GetMethodDoubleOption},
2869 {CC"getMethodStringOption",
2870 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2871 (void*)&WB_GetMethodStringOption},
2872 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2873 (void*)&WB_GetDefaultArchivePath},
2874 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2875 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2876 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2877 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2878 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2879 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2880 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2881 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2882 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2883 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2884 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2885 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2886 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2887 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2888 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2889 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2890
2891 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2892 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2893 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2894 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2895 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2896 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2897 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2898 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2899 (void*)&WB_AddCompilerDirective },
2900 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2901 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2902 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2903 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2904 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2905 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2906 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2907 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2908 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2909 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2910 (void*)&WB_ConcurrentGCRunTo},
2911 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2912 (void*)&WB_CheckLibSpecifiesNoexecstack},
2913 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2914 {CC"validateCgroup",
2915 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2916 (void*)&WB_ValidateCgroup },
2917 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2918 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2919 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2920 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2921 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2922 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2923 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2924
2925 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2926 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2927 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2928 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2929 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2930 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2931 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2932 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2933 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2934 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2935 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2936
2937 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2938 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2939 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2940
2941 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2942 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2943 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
2944 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
2945 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2946 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2947 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2948 };
2949
2950
2951 #undef CC
2952
2953 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2954 {
2955 if (WhiteBoxAPI) {
2956 // Make sure that wbclass is loaded by the null classloader
2957 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2958 Handle loader(THREAD, ik->class_loader());
2959 if (loader.is_null()) {
2960 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2961 WhiteBox::set_used();
2962 }
2963 }
2964 }
2965 JVM_END