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/classLoader.hpp"
33 #include "classfile/classLoaderDataGraph.hpp"
34 #include "classfile/classLoaderStats.hpp"
35 #include "classfile/classPrinter.hpp"
36 #include "classfile/javaClasses.inline.hpp"
37 #include "classfile/modules.hpp"
38 #include "classfile/protectionDomainCache.hpp"
39 #include "classfile/stringTable.hpp"
40 #include "classfile/symbolTable.hpp"
41 #include "classfile/systemDictionary.hpp"
42 #include "classfile/vmSymbols.hpp"
43 #include "code/codeCache.hpp"
44 #include "compiler/compilationPolicy.hpp"
45 #include "compiler/compilerOracle.hpp"
46 #include "compiler/directivesParser.hpp"
47 #include "compiler/methodMatcher.hpp"
48 #include "gc/shared/concurrentGCBreakpoints.hpp"
49 #include "gc/shared/gcConfig.hpp"
50 #include "gc/shared/gcLocker.inline.hpp"
51 #include "gc/shared/genArguments.hpp"
52 #include "jvmtifiles/jvmtiEnv.hpp"
53 #include "logging/log.hpp"
54 #include "memory/iterator.hpp"
55 #include "memory/metadataFactory.hpp"
56 #include "memory/metaspace/testHelpers.hpp"
57 #include "memory/metaspaceUtils.hpp"
58 #include "memory/oopFactory.hpp"
59 #include "memory/resourceArea.hpp"
60 #include "memory/universe.hpp"
61 #include "nmt/mallocSiteTable.hpp"
62 #include "nmt/memTracker.hpp"
63 #include "oops/array.hpp"
64 #include "oops/compressedOops.hpp"
65 #include "oops/constantPool.inline.hpp"
66 #include "oops/klass.inline.hpp"
67 #include "oops/method.inline.hpp"
68 #include "oops/methodData.inline.hpp"
69 #include "oops/objArrayKlass.hpp"
70 #include "oops/objArrayOop.inline.hpp"
71 #include "oops/oop.inline.hpp"
72 #include "oops/typeArrayOop.inline.hpp"
73 #include "prims/jvmtiEnvBase.hpp"
74 #include "prims/resolvedMethodTable.hpp"
75 #include "prims/wbtestmethods/parserTests.hpp"
76 #include "prims/whitebox.inline.hpp"
77 #include "runtime/arguments.hpp"
78 #include "runtime/atomic.hpp"
79 #include "runtime/deoptimization.hpp"
80 #include "runtime/fieldDescriptor.inline.hpp"
81 #include "runtime/flags/jvmFlag.hpp"
82 #include "runtime/flags/jvmFlagAccess.hpp"
83 #include "runtime/frame.inline.hpp"
84 #include "runtime/handles.inline.hpp"
85 #include "runtime/handshake.hpp"
86 #include "runtime/interfaceSupport.inline.hpp"
87 #include "runtime/javaCalls.hpp"
88 #include "runtime/javaThread.inline.hpp"
89 #include "runtime/jniHandles.inline.hpp"
90 #include "runtime/lockStack.hpp"
91 #include "runtime/os.hpp"
92 #include "runtime/stackFrameStream.inline.hpp"
93 #include "runtime/synchronizer.hpp"
94 #include "runtime/threadSMR.hpp"
95 #include "runtime/vframe.hpp"
96 #include "runtime/vm_version.hpp"
97 #include "services/memoryService.hpp"
98 #include "utilities/align.hpp"
99 #include "utilities/checkedCast.hpp"
100 #include "utilities/debug.hpp"
101 #include "utilities/elfFile.hpp"
102 #include "utilities/exceptions.hpp"
103 #include "utilities/macros.hpp"
104 #include "utilities/nativeCallStack.hpp"
105 #include "utilities/ostream.hpp"
106 #if INCLUDE_G1GC
107 #include "gc/g1/g1Arguments.hpp"
108 #include "gc/g1/g1CollectedHeap.inline.hpp"
109 #include "gc/g1/g1ConcurrentMark.hpp"
110 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
111 #include "gc/g1/g1HeapRegionManager.hpp"
112 #include "gc/g1/g1HeapRegionRemSet.inline.hpp"
113 #endif // INCLUDE_G1GC
114 #if INCLUDE_PARALLELGC
115 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
116 #endif // INCLUDE_PARALLELGC
117 #if INCLUDE_SERIALGC
118 #include "gc/serial/serialHeap.hpp"
119 #endif // INCLUDE_SERIALGC
120 #if INCLUDE_ZGC
121 #include "gc/z/zAddress.inline.hpp"
122 #endif // INCLUDE_ZGC
123 #if INCLUDE_JVMCI
124 #include "jvmci/jvmciEnv.hpp"
125 #include "jvmci/jvmciRuntime.hpp"
126 #endif
127 #ifdef LINUX
128 #include "cgroupSubsystem_linux.hpp"
129 #include "osContainer_linux.hpp"
130 #include "os_linux.hpp"
131 #endif
132
133 #define CHECK_JNI_EXCEPTION_(env, value) \
134 do { \
135 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
136 THREAD->clear_pending_jni_exception_check(); \
137 if (HAS_PENDING_EXCEPTION) { \
138 return(value); \
139 } \
140 } while (0)
141
142 #define CHECK_JNI_EXCEPTION(env) \
143 do { \
144 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
145 THREAD->clear_pending_jni_exception_check(); \
146 if (HAS_PENDING_EXCEPTION) { \
147 return; \
148 } \
149 } while (0)
150
151 bool WhiteBox::_used = false;
152 volatile bool WhiteBox::compilation_locked = false;
153
154 class VM_WhiteBoxOperation : public VM_Operation {
155 public:
156 VM_WhiteBoxOperation() { }
157 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
158 bool allow_nested_vm_operations() const { return true; }
159 };
160
161
162 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
163 return (jlong)(void*)JNIHandles::resolve(obj);
164 WB_END
165
166 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
167 return heapOopSize;
168 WB_END
169
170 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
171 return (jint)os::vm_page_size();
172 WB_END
173
174 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
175 return os::vm_allocation_granularity();
176 WB_END
177
178 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
179 return os::large_page_size();
180 WB_END
181
182 class WBIsKlassAliveClosure : public LockedClassesDo {
183 Symbol* _name;
184 int _count;
185 public:
186 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
187
188 void do_klass(Klass* k) {
189 Symbol* ksym = k->name();
190 if (ksym->fast_compare(_name) == 0) {
191 _count++;
192 } else if (k->is_instance_klass()) {
193 // Need special handling for hidden classes because the JVM
194 // appends "+<hex-address>" to hidden class names.
195 InstanceKlass *ik = InstanceKlass::cast(k);
196 if (ik->is_hidden()) {
197 ResourceMark rm;
198 char* k_name = ksym->as_C_string();
199 // Find the first '+' char and truncate the string at that point.
200 // NOTE: This will not work correctly if the original hidden class
201 // name contains a '+'.
202 char* plus_char = strchr(k_name, '+');
203 if (plus_char != nullptr) {
204 *plus_char = 0;
205 char* c_name = _name->as_C_string();
206 if (strcmp(c_name, k_name) == 0) {
207 _count++;
208 }
209 }
210 }
211 }
212 }
213
214 int count() const {
215 return _count;
216 }
217 };
218
219 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
220 oop h_name = JNIHandles::resolve(name);
221 if (h_name == nullptr) {
222 return 0;
223 }
224 Symbol* sym = java_lang_String::as_symbol(h_name);
225 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
226
227 WBIsKlassAliveClosure closure(sym);
228 ClassLoaderDataGraph::classes_do(&closure);
229
230 // Return the count of alive classes with this name.
231 return closure.count();
232 WB_END
233
234 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
235 oop h_name = JNIHandles::resolve(name);
236 if (h_name == nullptr) {
237 return 0;
238 }
239 Symbol* sym = java_lang_String::as_symbol(h_name);
240 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
241 return (jint)sym->refcount();
242 WB_END
243
244
245 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
246 #if INCLUDE_JVMTI
247 ResourceMark rm;
248 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
249 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
250 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
251 assert(err == JVMTI_ERROR_NONE, "must not fail");
252 #endif
253 }
254 WB_END
255
256 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
257 #if INCLUDE_JVMTI
258 ResourceMark rm;
259 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
260 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
261 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
262 assert(err == JVMTI_ERROR_NONE, "must not fail");
263 #endif
264 }
265 WB_END
266
267
268 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
269 return (jlong)Arguments::max_heap_for_compressed_oops();
270 }
271 WB_END
272
273 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
274 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
275 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
276 MinHeapSize,
277 InitialHeapSize,
278 MaxHeapSize,
279 SpaceAlignment,
280 HeapAlignment);
281 }
282 WB_END
283
284 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
285 size_t granularity = os::vm_allocation_granularity();
286 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
287 VirtualSpace vs;
288 vs.initialize(rhs, 50 * granularity);
289
290 // Check if constraints are complied
291 if (!( UseCompressedOops && rhs.base() != nullptr &&
292 CompressedOops::base() != nullptr &&
293 CompressedOops::use_implicit_null_checks() )) {
294 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
295 "\tUseCompressedOops is %d\n"
296 "\trhs.base() is " PTR_FORMAT "\n"
297 "\tCompressedOops::base() is " PTR_FORMAT "\n"
298 "\tCompressedOops::use_implicit_null_checks() is %d",
299 UseCompressedOops,
300 p2i(rhs.base()),
301 p2i(CompressedOops::base()),
302 CompressedOops::use_implicit_null_checks());
303 return;
304 }
305 tty->print_cr("Reading from no access area... ");
306 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
307 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
308 WB_END
309
310 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
311 size_t magnitude, size_t iterations) {
312 size_t granularity = os::vm_allocation_granularity();
313 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
314 VirtualSpace vs;
315 if (!vs.initialize(rhs, 0)) {
316 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
317 return 3;
318 }
319
320 int seed = os::random();
321 tty->print_cr("Random seed is %d", seed);
322
323 for (size_t i = 0; i < iterations; i++) {
324
325 // Whether we will shrink or grow
326 bool shrink = os::random() % 2L == 0;
327
328 // Get random delta to resize virtual space
329 size_t delta = (size_t)os::random() % magnitude;
330
331 // If we are about to shrink virtual space below zero, then expand instead
332 if (shrink && vs.committed_size() < delta) {
333 shrink = false;
334 }
335
336 // Resizing by delta
337 if (shrink) {
338 vs.shrink_by(delta);
339 } else {
340 // If expanding fails expand_by will silently return false
341 vs.expand_by(delta, true);
342 }
343 }
344 return 0;
345 }
346
347 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
348 jlong reserved_space_size, jlong magnitude, jlong iterations))
349 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
350 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
351 iterations);
352 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
353 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
354 return 1;
355 }
356
357 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
358 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
359 if (sizeof(size_t) < sizeof(jlong)) {
360 jlong size_t_max_value = (jlong)SIZE_MAX;
361 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
362 || iterations > size_t_max_value) {
363 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
364 return 2;
365 }
366 }
367
368 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
369 (size_t) magnitude, (size_t) iterations);
370 WB_END
371
372 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
373 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
374 WB_END
375
376 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
377 #if INCLUDE_JVMCI
378 return JVMCI::shared_library_exists();
379 #endif
380 return false;
381 WB_END
382
383 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
384 #if INCLUDE_JVMCI
385 if (EnableJVMCI) {
386 // Enter the JVMCI env that will be used by the CompileBroker.
387 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
388 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
389 }
390 #endif
391 return false;
392 WB_END
393
394 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
395 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
396 WB_END
397
398 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
399 return GCConfig::is_gc_selected_ergonomically();
400 WB_END
401
402 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
403 oop p = JNIHandles::resolve(obj);
404 #if INCLUDE_G1GC
405 if (UseG1GC) {
406 G1CollectedHeap* g1h = G1CollectedHeap::heap();
407 const G1HeapRegion* hr = g1h->heap_region_containing(p);
408 return hr->is_old_or_humongous();
409 }
410 #endif
411 #if INCLUDE_PARALLELGC
412 if (UseParallelGC) {
413 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
414 return !psh->is_in_young(p);
415 }
416 #endif
417 #if INCLUDE_ZGC
418 if (UseZGC) {
419 if (ZGenerational) {
420 return ZHeap::heap()->is_old(to_zaddress(p));
421 } else {
422 return Universe::heap()->is_in(p);
423 }
424 }
425 #endif
426 #if INCLUDE_SHENANDOAHGC
427 if (UseShenandoahGC) {
428 return Universe::heap()->is_in(p);
429 }
430 #endif
431 #if INCLUDE_SERIALGC
432 if (UseSerialGC) {
433 return !SerialHeap::heap()->is_in_young(p);
434 }
435 #endif
436 ShouldNotReachHere();
437 return false;
438 WB_END
439
440 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
441 oop p = JNIHandles::resolve(obj);
442 return p->size() * HeapWordSize;
443 WB_END
444
445 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
446 return (jlong)SpaceAlignment;
447 WB_END
448
449 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
450 return (jlong)HeapAlignment;
451 WB_END
452
453 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
454 return Universe::heap()->supports_concurrent_gc_breakpoints();
455 WB_END
456
457 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
458 ConcurrentGCBreakpoints::acquire_control();
459 WB_END
460
461 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
462 ConcurrentGCBreakpoints::release_control();
463 WB_END
464
465 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
466 ConcurrentGCBreakpoints::run_to_idle();
467 WB_END
468
469 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
470 Handle h_name(THREAD, JNIHandles::resolve(at));
471 ResourceMark rm;
472 const char* c_name = java_lang_String::as_utf8_string(h_name());
473 return ConcurrentGCBreakpoints::run_to(c_name);
474 WB_END
475
476 #if INCLUDE_G1GC
477
478 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
479 if (UseG1GC) {
480 G1CollectedHeap* g1h = G1CollectedHeap::heap();
481 oop result = JNIHandles::resolve(obj);
482 const G1HeapRegion* hr = g1h->heap_region_containing(result);
483 return hr->is_humongous();
484 }
485 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
486 WB_END
487
488 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
489 if (UseG1GC) {
490 G1CollectedHeap* g1h = G1CollectedHeap::heap();
491 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
492 return hr->is_humongous();
493 }
494 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
495 WB_END
496
497 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
498 if (UseG1GC) {
499 G1CollectedHeap* g1h = G1CollectedHeap::heap();
500 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
501 return hr->is_free();
502 }
503 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
504 WB_END
505
506 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
507 if (UseG1GC) {
508 G1CollectedHeap* g1h = G1CollectedHeap::heap();
509 size_t nr = g1h->max_regions();
510 return (jlong)nr;
511 }
512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
513 WB_END
514
515 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
516 if (UseG1GC) {
517 G1CollectedHeap* g1h = G1CollectedHeap::heap();
518 size_t nr = g1h->num_free_regions();
519 return (jlong)nr;
520 }
521 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
522 WB_END
523
524 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
525 if (UseG1GC) {
526 G1CollectedHeap* g1h = G1CollectedHeap::heap();
527 return g1h->concurrent_mark()->cm_thread()->in_progress();
528 }
529 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
530 WB_END
531
532 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
533 if (UseG1GC) {
534 G1CollectedHeap* g1h = G1CollectedHeap::heap();
535 G1ConcurrentMark* cm = g1h->concurrent_mark();
536 return cm->completed_mark_cycles();
537 }
538 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
539 WB_END
540
541 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
542 if (UseG1GC) {
543 return (jint)G1HeapRegion::GrainBytes;
544 }
545 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
546 WB_END
547
548 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
549 if (UseG1GC) {
550 return G1CollectedHeap::heap()->has_uncommittable_regions();
551 }
552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
553 WB_END
554
555 #endif // INCLUDE_G1GC
556
557 #if INCLUDE_PARALLELGC
558
559 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
560 if (UseParallelGC) {
561 return GenAlignment;
562 }
563 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
564 WB_END
565
566 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
567 if (UseParallelGC) {
568 return GenAlignment;
569 }
570 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
571 WB_END
572
573 #endif // INCLUDE_PARALLELGC
574
575 #if INCLUDE_G1GC
576
577 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
578 if (UseG1GC) {
579 ResourceMark rm(THREAD);
580 G1CollectedHeap* g1h = G1CollectedHeap::heap();
581 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
582 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
583 return JNIHandles::make_local(THREAD, h());
584 }
585 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
586 WB_END
587
588 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
589 if (UseG1GC) {
590 G1NUMA* numa = G1NUMA::numa();
591 return (jint)numa->num_active_nodes();
592 }
593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
594 WB_END
595
596 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
597 if (UseG1GC) {
598 G1NUMA* numa = G1NUMA::numa();
599 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
600 const uint* node_ids = numa->node_ids();
601
602 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
603 for (int i = 0; i < num_node_ids; i++) {
604 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
605 }
606 return (jintArray) JNIHandles::make_local(THREAD, result);
607 }
608 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
609 WB_END
610
611 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
612
613 private:
614 const int _liveness;
615 size_t _total_count;
616 size_t _total_memory;
617 size_t _total_memory_to_free;
618
619 public:
620 OldRegionsLivenessClosure(int liveness) :
621 _liveness(liveness),
622 _total_count(0),
623 _total_memory(0),
624 _total_memory_to_free(0) { }
625
626 size_t total_count() { return _total_count; }
627 size_t total_memory() { return _total_memory; }
628 size_t total_memory_to_free() { return _total_memory_to_free; }
629
630 bool do_heap_region(G1HeapRegion* r) {
631 if (r->is_old()) {
632 size_t live = r->live_bytes();
633 size_t size = r->used();
634 size_t reg_size = G1HeapRegion::GrainBytes;
635 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
636 _total_memory += size;
637 ++_total_count;
638 if (size == reg_size) {
639 // We don't include non-full regions since they are unlikely included in mixed gc
640 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
641 _total_memory_to_free += size - live;
642 }
643 }
644 }
645 return false;
646 }
647 };
648
649
650 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
651 if (!UseG1GC) {
652 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
653 }
654 if (liveness < 0) {
655 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
656 }
657
658 G1CollectedHeap* g1h = G1CollectedHeap::heap();
659 OldRegionsLivenessClosure rli(liveness);
660 g1h->heap_region_iterate(&rli);
661
662 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
663 result->long_at_put(0, rli.total_count());
664 result->long_at_put(1, rli.total_memory());
665 result->long_at_put(2, rli.total_memory_to_free());
666 return (jlongArray) JNIHandles::make_local(THREAD, result);
667 WB_END
668
669 #endif // INCLUDE_G1GC
670
671 // Alloc memory using the test memory type so that we can use that to see if
672 // NMT picks it up correctly
673 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
674 jlong addr = 0;
675 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
676 return addr;
677 WB_END
678
679 // Alloc memory with pseudo call stack. The test can create pseudo malloc
680 // allocation site to stress the malloc tracking.
681 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
682 address pc = (address)(size_t)pseudo_stack;
683 NativeCallStack stack(&pc, 1);
684 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
685 WB_END
686
687 // Alloc memory with pseudo call stack and specific memory type.
688 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
689 address pc = (address)(size_t)pseudo_stack;
690 NativeCallStack stack(&pc, 1);
691 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
692 WB_END
693
694 // Free the memory allocated by NMTAllocTest
695 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
696 os::free((void*)(uintptr_t)mem);
697 WB_END
698
699 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
700 jlong addr = 0;
701
702 addr = (jlong)(uintptr_t)os::reserve_memory(size);
703 MemTracker::record_virtual_memory_type((address)addr, mtTest);
704
705 return addr;
706 WB_END
707
708 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
709 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
710 MemTracker::record_virtual_memory_type((address)addr, mtTest);
711
712 return addr;
713 WB_END
714
715 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
716 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
717 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
718 WB_END
719
720 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
721 os::uncommit_memory((char *)(uintptr_t)addr, size);
722 WB_END
723
724 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
725 os::release_memory((char *)(uintptr_t)addr, size);
726 WB_END
727
728 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
729 int hash_size = MallocSiteTable::hash_buckets();
730 assert(hash_size > 0, "NMT hash_size should be > 0");
731 return (jint)hash_size;
732 WB_END
733
734 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
735 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
736 return (jlong)arena;
737 WB_END
738
739 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
740 Arena* a = (Arena*)arena;
741 delete a;
742 WB_END
743
744 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
745 Arena* a = (Arena*)arena;
746 a->Amalloc(size_t(size));
747 WB_END
748
749 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
750 assert(method != nullptr, "method should not be null");
751 ThreadToNativeFromVM ttn(thread);
752 return env->FromReflectedMethod(method);
753 }
754
755 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
756 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
757 private:
758 int _result;
759 const bool _make_not_entrant;
760 public:
761 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
762 _result(0), _make_not_entrant(make_not_entrant) { }
763 int result() const { return _result; }
764
765 void doit() {
766 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
767 if (t->has_last_Java_frame()) {
768 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
769 frame* f = fst.current();
770 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
771 Deoptimization::deoptimize(t, *f);
772 if (_make_not_entrant) {
773 nmethod* nm = CodeCache::find_nmethod(f->pc());
774 assert(nm != nullptr, "did not find nmethod");
775 nm->make_not_entrant();
776 }
777 ++_result;
778 }
779 }
780 }
781 }
782 }
783 };
784
785 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
786 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
787 VMThread::execute(&op);
788 return op.result();
789 WB_END
790
791 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
792 bool result = false;
793 if (thread->has_last_Java_frame()) {
794 RegisterMap reg_map(thread,
795 RegisterMap::UpdateMap::include,
796 RegisterMap::ProcessFrames::include,
797 RegisterMap::WalkContinuation::skip);
798 javaVFrame *jvf = thread->last_java_vframe(®_map);
799 for (jint d = 0; d < depth && jvf != nullptr; d++) {
800 jvf = jvf->java_sender();
801 }
802 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
803 }
804 return result;
805 WB_END
806
807 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
808 DeoptimizationScope deopt_scope;
809 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
810 deopt_scope.deoptimize_marked();
811 WB_END
812
813 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
814 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
815 int result = 0;
816 CHECK_JNI_EXCEPTION_(env, result);
817
818 DeoptimizationScope deopt_scope;
819 {
820 MutexLocker mu(Compile_lock);
821 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
822 if (is_osr) {
823 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
824 } else {
825 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
826 if (mh->code() != nullptr) {
827 deopt_scope.mark(mh->code());
828 ++result;
829 }
830 }
831 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
832 }
833
834 deopt_scope.deoptimize_marked();
835
836 return result;
837 WB_END
838
839 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
840 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
841 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
842 MutexLocker mu(Compile_lock);
843 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
844 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
845 if (code == nullptr) {
846 return JNI_FALSE;
847 }
848 return !code->is_marked_for_deoptimization();
849 WB_END
850
851 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
852 if (comp == nullptr) {
853 return true;
854 }
855 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
856 bool exclude = directive->ExcludeOption;
857 DirectivesStack::release(directive);
858 return exclude;
859 }
860
861 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
862 if (is_osr) {
863 return CompilationPolicy::can_be_osr_compiled(mh, level);
864 } else {
865 return CompilationPolicy::can_be_compiled(mh, level);
866 }
867 }
868
869 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
870 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
871 return false;
872 }
873 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
874 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
875 MutexLocker mu(Compile_lock);
876 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
877
878 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
879 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
880 // to exclude a compilation of 'method'.
881 if (comp_level == CompLevel_any) {
882 // Both compilers could have ExcludeOption set. Check all combinations.
883 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
884 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
885 if (excluded_c1 && excluded_c2) {
886 // Compilation of 'method' excluded by both compilers.
887 return false;
888 }
889
890 if (excluded_c1) {
891 // C1 only has ExcludeOption set: Check if compilable with C2.
892 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
893 } else if (excluded_c2) {
894 // C2 only has ExcludeOption set: Check if compilable with C1.
895 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
896 }
897 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
898 // Compilation of 'method' excluded by compiler used for 'comp_level'.
899 return false;
900 }
901
902 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
903 WB_END
904
905 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
906 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
907 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
908 MutexLocker mu(Compile_lock);
909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
910 return mh->queued_for_compilation();
911 WB_END
912
913 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
914 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
915 return false; // Intrinsic is not available on a non-existent compilation level.
916 }
917 jmethodID method_id, compilation_context_id;
918 method_id = reflected_method_to_jmid(thread, env, method);
919 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
920 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
921
922 DirectiveSet* directive;
923 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
924 assert(comp != nullptr, "compiler not available");
925 if (compilation_context != nullptr) {
926 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
927 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
928 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
929 directive = DirectivesStack::getMatchingDirective(cch, comp);
930 } else {
931 // Calling with null matches default directive
932 directive = DirectivesStack::getDefaultDirective(comp);
933 }
934 bool result = comp->is_intrinsic_available(mh, directive);
935 DirectivesStack::release(directive);
936 return result;
937 WB_END
938
939 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
940 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
941 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
942 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
943 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
944 return (code != nullptr ? code->comp_level() : CompLevel_none);
945 WB_END
946
947 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
948 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
949 CHECK_JNI_EXCEPTION(env);
950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
951 if (is_osr) {
952 mh->set_not_osr_compilable("WhiteBox", comp_level);
953 } else {
954 mh->set_not_compilable("WhiteBox", comp_level);
955 }
956 WB_END
957
958 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
959 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
960 CHECK_JNI_EXCEPTION_(env, 0);
961 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
962 uint cnt = 0;
963 MethodData* mdo = mh->method_data();
964 if (mdo != nullptr) {
965 cnt = mdo->decompile_count();
966 }
967 return cnt;
968 WB_END
969
970 // Get the trap count of a method for a specific reason. If the trap count for
971 // that reason did overflow, this includes the overflow trap count of the method.
972 // If 'reason' is null, the sum of the traps for all reasons will be returned.
973 // This number includes the overflow trap count if the trap count for any reason
974 // did overflow.
975 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
976 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
977 CHECK_JNI_EXCEPTION_(env, 0);
978 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
979 uint cnt = 0;
980 MethodData* mdo = mh->method_data();
981 if (mdo != nullptr) {
982 ResourceMark rm(THREAD);
983 char* reason_str = (reason_obj == nullptr) ?
984 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
985 bool overflow = false;
986 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
987 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
988 cnt = mdo->trap_count(reason);
989 // Count in the overflow trap count on overflow
990 if (cnt == (uint)-1) {
991 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
992 }
993 break;
994 } else if (reason_str == nullptr) {
995 uint c = mdo->trap_count(reason);
996 if (c == (uint)-1) {
997 c = mdo->trap_count_limit();
998 if (!overflow) {
999 // Count overflow trap count just once
1000 overflow = true;
1001 c += mdo->overflow_trap_count();
1002 }
1003 }
1004 cnt += c;
1005 }
1006 }
1007 }
1008 return cnt;
1009 WB_END
1010
1011 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1012 if (reason_obj == nullptr && action_obj == nullptr) {
1013 return Deoptimization::total_deoptimization_count();
1014 }
1015 ResourceMark rm(THREAD);
1016 const char *reason_str = (reason_obj == nullptr) ?
1017 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1018 const char *action_str = (action_obj == nullptr) ?
1019 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1020
1021 return Deoptimization::deoptimization_count(reason_str, action_str);
1022 WB_END
1023
1024 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1025 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1026 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1027 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1028 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1029 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1030 WB_END
1031
1032 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1033 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1034 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1035 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1036 bool result = mh->dont_inline();
1037 mh->set_dont_inline(value == JNI_TRUE);
1038 return result;
1039 WB_END
1040
1041 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1042 if (comp_level == CompLevel_any) {
1043 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1044 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1045 } else {
1046 return CompileBroker::queue_size(comp_level);
1047 }
1048 WB_END
1049
1050 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1051 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1052 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1053 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1054 bool result = mh->force_inline();
1055 mh->set_force_inline(value == JNI_TRUE);
1056 return result;
1057 WB_END
1058
1059 #ifdef LINUX
1060 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1061 const char* proc_self_cgroup,
1062 const char* proc_self_mountinfo,
1063 u1* cg_flags) {
1064 CgroupInfo cg_infos[CG_INFO_LENGTH];
1065 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1066 proc_self_cgroup,
1067 proc_self_mountinfo, cg_flags);
1068 }
1069 #endif
1070
1071 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1072 // Screen for unavailable/bad comp level or null method
1073 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1074 if (method == nullptr) {
1075 tty->print_cr("WB error: request to compile null method");
1076 return false;
1077 }
1078 if (comp_level > CompilationPolicy::highest_compile_level()) {
1079 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1080 return false;
1081 }
1082 if (comp == nullptr) {
1083 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1084 return false;
1085 }
1086
1087 // Check if compilation is blocking
1088 methodHandle mh(THREAD, method);
1089 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1090 bool is_blocking = !directive->BackgroundCompilationOption;
1091 DirectivesStack::release(directive);
1092
1093 // Compile method and check result
1094 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), false, CompileTask::Reason_Whitebox, CHECK_false);
1095 MutexLocker mu(THREAD, Compile_lock);
1096 bool is_queued = mh->queued_for_compilation();
1097 if ((!is_blocking && is_queued) || nm != nullptr) {
1098 return true;
1099 }
1100 // Check code again because compilation may be finished before Compile_lock is acquired.
1101 if (bci == InvocationEntryBci) {
1102 nmethod* code = mh->code();
1103 if (code != nullptr) {
1104 return true;
1105 }
1106 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1107 return true;
1108 }
1109 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1110 mh->print_short_name(tty);
1111 tty->cr();
1112 if (is_blocking && is_queued) {
1113 tty->print_cr("WB error: blocking compilation is still in queue!");
1114 }
1115 return false;
1116 }
1117
1118 size_t WhiteBox::get_in_use_monitor_count() {
1119 return ObjectSynchronizer::_in_use_list.count();
1120 }
1121
1122 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1123 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1124 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1125 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1126 WB_END
1127
1128 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1129 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1130 Method* clinit = ik->class_initializer();
1131 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1132 return false;
1133 }
1134 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1135 WB_END
1136
1137 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1138 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1139 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1140
1141 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1142 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1143 bool result = directive->PrintAssemblyOption;
1144 DirectivesStack::release(directive);
1145
1146 return result;
1147 WB_END
1148
1149 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1150 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1151 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1152
1153 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1154
1155 ResourceMark rm(THREAD);
1156 const char* error_msg = nullptr;
1157 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1158 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1159
1160 if (m == nullptr) {
1161 assert(error_msg != nullptr, "Always have an error message");
1162 tty->print_cr("Got error: %s", error_msg);
1163 return -1; // Pattern failed
1164 }
1165
1166 // Pattern works - now check if it matches
1167 int result;
1168 if (m->match(mh, InlineMatcher::force_inline)) {
1169 result = 2; // Force inline match
1170 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1171 result = 1; // Dont inline match
1172 } else {
1173 result = 0; // No match
1174 }
1175 delete m;
1176 return result;
1177 WB_END
1178
1179 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1180 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1181 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1182
1183 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1184
1185 ResourceMark rm;
1186 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1187
1188 const char* error_msg = nullptr;
1189
1190 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1191 if (m == nullptr) {
1192 assert(error_msg != nullptr, "Must have error_msg");
1193 tty->print_cr("Got error: %s", error_msg);
1194 return -1;
1195 }
1196
1197 // Pattern works - now check if it matches
1198 int result = m->matches(mh);
1199 delete m;
1200 assert(result == 0 || result == 1, "Result out of range");
1201 return result;
1202 WB_END
1203
1204 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1205 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1206 CHECK_JNI_EXCEPTION(env);
1207 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1208
1209 MethodData* mdo = mh->method_data();
1210 if (mdo == nullptr) {
1211 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1212 mdo = mh->method_data();
1213 }
1214 mdo->init();
1215 InvocationCounter* icnt = mdo->invocation_counter();
1216 InvocationCounter* bcnt = mdo->backedge_counter();
1217 // set i-counter according to CompilationPolicy::is_method_profiled
1218 icnt->set(Tier4MinInvocationThreshold);
1219 bcnt->set(Tier4CompileThreshold);
1220 WB_END
1221
1222 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1223 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1224 CHECK_JNI_EXCEPTION(env);
1225 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1226 MutexLocker mu(THREAD, Compile_lock);
1227 MethodData* mdo = mh->method_data();
1228 MethodCounters* mcs = mh->method_counters();
1229
1230 if (mdo != nullptr) {
1231 mdo->init();
1232 ResourceMark rm(THREAD);
1233 int arg_count = mdo->method()->size_of_parameters();
1234 for (int i = 0; i < arg_count; i++) {
1235 mdo->set_arg_modified(i, 0);
1236 }
1237 mdo->clean_method_data(/*always_clean*/true);
1238 }
1239
1240 mh->clear_is_not_c1_compilable();
1241 mh->clear_is_not_c2_compilable();
1242 mh->clear_is_not_c2_osr_compilable();
1243 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1244 if (mcs != nullptr) {
1245 mcs->clear_counters();
1246 }
1247 WB_END
1248
1249 template <typename T, int type_enum>
1250 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1251 if (name == nullptr) {
1252 return false;
1253 }
1254 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1255 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1256 CHECK_JNI_EXCEPTION_(env, false);
1257 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1258 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1259 env->ReleaseStringUTFChars(name, flag_name);
1260 return (result == JVMFlag::SUCCESS);
1261 }
1262
1263 template <typename T, int type_enum>
1264 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1265 if (name == nullptr) {
1266 return false;
1267 }
1268 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1269 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1270 CHECK_JNI_EXCEPTION_(env, false);
1271 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1272 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1273 env->ReleaseStringUTFChars(name, flag_name);
1274 return (result == JVMFlag::SUCCESS);
1275 }
1276
1277 template <typename T>
1278 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1279 ResourceMark rm(thread);
1280 jclass clazz = env->FindClass(name->as_C_string());
1281 CHECK_JNI_EXCEPTION_(env, nullptr);
1282 jmethodID methodID = env->GetStaticMethodID(clazz,
1283 vmSymbols::valueOf_name()->as_C_string(),
1284 sig->as_C_string());
1285 CHECK_JNI_EXCEPTION_(env, nullptr);
1286 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1287 CHECK_JNI_EXCEPTION_(env, nullptr);
1288 return result;
1289 }
1290
1291 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1292 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1293 }
1294 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1295 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1296 }
1297 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1298 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1299 }
1300 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1301 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1302 }*/
1303 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1304 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1305 }
1306
1307 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1308 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1309 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1310 CHECK_JNI_EXCEPTION_(env, nullptr);
1311 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1312 env->ReleaseStringUTFChars(name, flag_name);
1313 return result;
1314 }
1315
1316 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1317 const JVMFlag* flag = getVMFlag(thread, env, name);
1318 return (flag != nullptr) && flag->is_constant_in_binary();
1319 WB_END
1320
1321 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1322 const JVMFlag* flag = getVMFlag(thread, env, name);
1323 return (flag != nullptr) && flag->is_default();
1324 WB_END
1325
1326 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1327 const JVMFlag* flag = getVMFlag(thread, env, name);
1328 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1329 WB_END
1330
1331 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1332 bool result;
1333 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1334 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1335 return booleanBox(thread, env, result);
1336 }
1337 return nullptr;
1338 WB_END
1339
1340 template <typename T, int type_enum>
1341 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1342 T result;
1343 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1344 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1345 return longBox(thread, env, result);
1346 }
1347 return nullptr;
1348 }
1349
1350 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1351 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1352 WB_END
1353
1354 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1355 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1356 WB_END
1357
1358 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1359 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1360 WB_END
1361
1362 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1363 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1364 WB_END
1365
1366 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1367 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1368 WB_END
1369
1370 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1371 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1372 WB_END
1373
1374 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1375 double result;
1376 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1377 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1378 return doubleBox(thread, env, result);
1379 }
1380 return nullptr;
1381 WB_END
1382
1383 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1384 ccstr ccstrResult;
1385 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1386 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1387 jstring result = env->NewStringUTF(ccstrResult);
1388 CHECK_JNI_EXCEPTION_(env, nullptr);
1389 return result;
1390 }
1391 return nullptr;
1392 WB_END
1393
1394 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1395 bool result = value == JNI_TRUE ? true : false;
1396 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1397 WB_END
1398
1399 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1400 int result = checked_cast<int>(value);
1401 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1402 WB_END
1403
1404 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1405 uint result = checked_cast<uint>(value);
1406 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1407 WB_END
1408
1409 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1410 intx result = value;
1411 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1412 WB_END
1413
1414 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1415 uintx result = value;
1416 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1417 WB_END
1418
1419 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1420 uint64_t result = value;
1421 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1422 WB_END
1423
1424 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1425 size_t result = value;
1426 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1427 WB_END
1428
1429 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1430 double result = value;
1431 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1432 WB_END
1433
1434 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1435 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1436 const char* ccstrValue;
1437 if (value == nullptr) {
1438 ccstrValue = nullptr;
1439 }
1440 else {
1441 ccstrValue = env->GetStringUTFChars(value, nullptr);
1442 CHECK_JNI_EXCEPTION(env);
1443 }
1444 {
1445 ccstr param = ccstrValue;
1446 ThreadInVMfromNative ttvfn(thread); // back to VM
1447 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1448 assert(param == nullptr, "old value is freed automatically and not returned");
1449 }
1450 }
1451 if (value != nullptr) {
1452 env->ReleaseStringUTFChars(value, ccstrValue);
1453 }
1454 WB_END
1455
1456 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1457 WhiteBox::compilation_locked = true;
1458 WB_END
1459
1460 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1461 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1462 WhiteBox::compilation_locked = false;
1463 mo.notify_all();
1464 WB_END
1465
1466 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1467 ResourceMark rm(THREAD);
1468 int len;
1469 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1470 return (StringTable::lookup(name, len) != nullptr);
1471 WB_END
1472
1473 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1474 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1475 Universe::heap()->collect(GCCause::_wb_full_gc);
1476 #if INCLUDE_G1GC || INCLUDE_SERIALGC
1477 if (UseG1GC || UseSerialGC) {
1478 // Needs to be cleared explicitly for G1 and Serial GC.
1479 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1480 }
1481 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC
1482 WB_END
1483
1484 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1485 Universe::heap()->collect(GCCause::_wb_young_gc);
1486 WB_END
1487
1488 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1489 // static+volatile in order to force the read to happen
1490 // (not be eliminated by the compiler)
1491 static char c;
1492 static volatile char* p;
1493
1494 p = os::reserve_memory(os::vm_allocation_granularity());
1495 if (p == nullptr) {
1496 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1497 }
1498
1499 c = *p;
1500 WB_END
1501
1502 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1503 const char* features = VM_Version::features_string();
1504 ThreadToNativeFromVM ttn(thread);
1505 jstring features_string = env->NewStringUTF(features);
1506
1507 CHECK_JNI_EXCEPTION_(env, nullptr);
1508
1509 return features_string;
1510 WB_END
1511
1512 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1513 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1514 return CodeCache::get_code_heap(code)->code_blob_type();
1515 }
1516
1517 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1518 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1519 return CodeCache::get_code_heap(blob_type);
1520 }
1521
1522 struct CodeBlobStub {
1523 CodeBlobStub(const CodeBlob* blob) :
1524 name(os::strdup(blob->name())),
1525 size(blob->size()),
1526 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1527 address((jlong) blob) { }
1528 ~CodeBlobStub() { os::free((void*) name); }
1529 const char* const name;
1530 const jint size;
1531 const jint blob_type;
1532 const jlong address;
1533 };
1534
1535 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1536 ResourceMark rm;
1537 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1538 CHECK_JNI_EXCEPTION_(env, nullptr);
1539 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1540
1541 jstring name = env->NewStringUTF(cb->name);
1542 CHECK_JNI_EXCEPTION_(env, nullptr);
1543 env->SetObjectArrayElement(result, 0, name);
1544
1545 jobject obj = integerBox(thread, env, cb->size);
1546 CHECK_JNI_EXCEPTION_(env, nullptr);
1547 env->SetObjectArrayElement(result, 1, obj);
1548
1549 obj = integerBox(thread, env, cb->blob_type);
1550 CHECK_JNI_EXCEPTION_(env, nullptr);
1551 env->SetObjectArrayElement(result, 2, obj);
1552
1553 obj = longBox(thread, env, cb->address);
1554 CHECK_JNI_EXCEPTION_(env, nullptr);
1555 env->SetObjectArrayElement(result, 3, obj);
1556
1557 return result;
1558 }
1559
1560 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1561 ResourceMark rm(THREAD);
1562 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1563 CHECK_JNI_EXCEPTION_(env, nullptr);
1564 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1565 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1566 jobjectArray result = nullptr;
1567 if (code == nullptr) {
1568 return result;
1569 }
1570 int comp_level = code->comp_level();
1571 int insts_size = code->insts_size();
1572
1573 ThreadToNativeFromVM ttn(thread);
1574 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1575 CHECK_JNI_EXCEPTION_(env, nullptr);
1576 result = env->NewObjectArray(5, clazz, nullptr);
1577 if (result == nullptr) {
1578 return result;
1579 }
1580
1581 CodeBlobStub stub(code);
1582 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1583 CHECK_JNI_EXCEPTION_(env, nullptr);
1584 env->SetObjectArrayElement(result, 0, codeBlob);
1585
1586 jobject level = integerBox(thread, env, comp_level);
1587 CHECK_JNI_EXCEPTION_(env, nullptr);
1588 env->SetObjectArrayElement(result, 1, level);
1589
1590 jbyteArray insts = env->NewByteArray(insts_size);
1591 CHECK_JNI_EXCEPTION_(env, nullptr);
1592 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1593 env->SetObjectArrayElement(result, 2, insts);
1594
1595 jobject id = integerBox(thread, env, code->compile_id());
1596 CHECK_JNI_EXCEPTION_(env, nullptr);
1597 env->SetObjectArrayElement(result, 3, id);
1598
1599 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1600 CHECK_JNI_EXCEPTION_(env, nullptr);
1601 env->SetObjectArrayElement(result, 4, entry_point);
1602
1603 return result;
1604 WB_END
1605
1606 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1607 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1608 BufferBlob* blob;
1609 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1610 if (full_size < size) {
1611 full_size += align_up(size - full_size, oopSize);
1612 }
1613 {
1614 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1615 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1616 if (blob != nullptr) {
1617 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1618 }
1619 }
1620 // Track memory usage statistic after releasing CodeCache_lock
1621 MemoryService::track_code_cache_memory_usage();
1622 return blob;
1623 }
1624
1625 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1626 if (size < 0) {
1627 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1628 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1629 }
1630 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1631 WB_END
1632
1633 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1634 if (addr == 0) {
1635 return;
1636 }
1637 BufferBlob::free((BufferBlob*) addr);
1638 WB_END
1639
1640 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1641 ResourceMark rm;
1642 GrowableArray<CodeBlobStub*> blobs;
1643 {
1644 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1645 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1646 if (heap == nullptr) {
1647 return nullptr;
1648 }
1649 for (CodeBlob* cb = (CodeBlob*) heap->first();
1650 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1651 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1652 new (stub) CodeBlobStub(cb);
1653 blobs.append(stub);
1654 }
1655 }
1656 ThreadToNativeFromVM ttn(thread);
1657 jobjectArray result = nullptr;
1658 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1659 CHECK_JNI_EXCEPTION_(env, nullptr);
1660 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1661 CHECK_JNI_EXCEPTION_(env, nullptr);
1662 if (result == nullptr) {
1663 return result;
1664 }
1665 int i = 0;
1666 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1667 it != blobs.end(); ++it) {
1668 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1669 CHECK_JNI_EXCEPTION_(env, nullptr);
1670 env->SetObjectArrayElement(result, i, obj);
1671 CHECK_JNI_EXCEPTION_(env, nullptr);
1672 ++i;
1673 }
1674 return result;
1675 WB_END
1676
1677 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1678 return CompileBroker::get_compilation_activity_mode();
1679 WB_END
1680
1681 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1682 if (addr == 0) {
1683 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1684 "WB_GetCodeBlob: addr is null");
1685 }
1686 ThreadToNativeFromVM ttn(thread);
1687 CodeBlobStub stub((CodeBlob*) addr);
1688 return codeBlob2objectArray(thread, env, &stub);
1689 WB_END
1690
1691 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1692 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1693 CHECK_JNI_EXCEPTION_(env, 0);
1694 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1695 return (jlong) mh->method_data();
1696 WB_END
1697
1698 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1699 return (jlong) thread->stack_size();
1700 WB_END
1701
1702 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1703 return (jlong) thread->stack_overflow_state()->stack_available(
1704 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1705 WB_END
1706
1707
1708 int WhiteBox::array_bytes_to_length(size_t bytes) {
1709 return Array<u1>::bytes_to_length(bytes);
1710 }
1711
1712 ///////////////
1713 // MetaspaceTestContext and MetaspaceTestArena
1714 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1715 metaspace::MetaspaceTestContext* context =
1716 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1717 return (jlong)p2i(context);
1718 WB_END
1719
1720 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1721 delete (metaspace::MetaspaceTestContext*) context;
1722 WB_END
1723
1724 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1725 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1726 context0->purge_area();
1727 WB_END
1728
1729 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1730 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1731 context0->print_on(tty);
1732 WB_END
1733
1734 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1735 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1736 return context0->committed_words();
1737 WB_END
1738
1739 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1740 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1741 return context0->used_words();
1742 WB_END
1743
1744 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1745 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1746 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1747 return (jlong)p2i(context0->create_arena(type));
1748 WB_END
1749
1750 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1751 delete (metaspace::MetaspaceTestArena*) arena;
1752 WB_END
1753
1754 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1755 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1756 MetaWord* p = arena0->allocate((size_t) word_size);
1757 return (jlong)p2i(p);
1758 WB_END
1759
1760 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1761 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1762 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1763 WB_END
1764
1765 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1766 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1767 WB_END
1768
1769 //////////////
1770
1771 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1772 if (size < 0) {
1773 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1774 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1775 }
1776
1777 oop class_loader_oop = JNIHandles::resolve(class_loader);
1778 ClassLoaderData* cld = class_loader_oop != nullptr
1779 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1780 : ClassLoaderData::the_null_class_loader_data();
1781
1782 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1783
1784 return (jlong)(uintptr_t)metadata;
1785 WB_END
1786
1787 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1788 jstring version, jstring location, jobjectArray packages))
1789 Handle h_module (THREAD, JNIHandles::resolve(module));
1790 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1791 WB_END
1792
1793 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1794 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1795 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1796 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1797 WB_END
1798
1799 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1800 Handle h_module (THREAD, JNIHandles::resolve(module));
1801 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1802 WB_END
1803
1804 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1805 Handle h_module (THREAD, JNIHandles::resolve(module));
1806 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1807 WB_END
1808
1809 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1810 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1811 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1812 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1813 WB_END
1814
1815 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1816 if (inc < 0) {
1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1818 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1819 }
1820
1821 jlong max_size_t = (jlong) ((size_t) -1);
1822 if (inc > max_size_t) {
1823 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1824 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1825 }
1826
1827 size_t new_cap_until_GC = 0;
1828 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1829 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1830 if (!success) {
1831 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1832 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1833 "due to contention with another thread");
1834 }
1835 return (jlong) new_cap_until_GC;
1836 WB_END
1837
1838 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1839 return (jlong) MetaspaceGC::capacity_until_GC();
1840 WB_END
1841
1842 // The function is only valid when CDS is available.
1843 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1844 #if INCLUDE_CDS
1845 return (jlong)MetaspaceShared::core_region_alignment();
1846 #else
1847 ShouldNotReachHere();
1848 return 0L;
1849 #endif
1850 WB_END
1851
1852 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1853 oop obj_oop = JNIHandles::resolve(obj);
1854 return (jboolean) obj_oop->mark().has_monitor();
1855 WB_END
1856
1857 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1858 return (jlong) WhiteBox::get_in_use_monitor_count();
1859 WB_END
1860
1861 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1862 return (jint) LockStack::CAPACITY;
1863 WB_END
1864
1865 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1866 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1867 WB_END
1868
1869 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1870 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1871 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1872 WB_END
1873
1874 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1875 VM_ForceSafepoint force_safepoint_op;
1876 VMThread::execute(&force_safepoint_op);
1877 WB_END
1878
1879 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1880 nullStream dev_null;
1881 ClassLoaderStatsVMOperation force_op(&dev_null);
1882 VMThread::execute(&force_op);
1883 WB_END
1884
1885 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1886 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1887 return (jlong) ik->constants();
1888 WB_END
1889
1890 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1891 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1892 objArrayOop resolved_refs= ik->constants()->resolved_references();
1893 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1894 WB_END
1895
1896 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1897 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1898 ConstantPool* cp = ik->constants();
1899 if (cp->cache() == nullptr) {
1900 return -1;
1901 }
1902 return cp->resolved_field_entries_length();
1903 WB_END
1904
1905 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1906 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1907 ConstantPool* cp = ik->constants();
1908 if (cp->cache() == nullptr) {
1909 return -1;
1910 }
1911 return cp->resolved_field_entry_at(index)->constant_pool_index();
1912 WB_END
1913
1914 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1915 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1916 ConstantPool* cp = ik->constants();
1917 if (cp->cache() == nullptr) {
1918 return -1;
1919 }
1920 return cp->resolved_method_entries_length();
1921 WB_END
1922
1923 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1924 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1925 ConstantPool* cp = ik->constants();
1926 if (cp->cache() == nullptr) {
1927 return -1;
1928 }
1929 return cp->resolved_method_entry_at(index)->constant_pool_index();
1930 WB_END
1931
1932 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1933 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1934 ConstantPool* cp = ik->constants();
1935 if (cp->cache() == nullptr) {
1936 return -1;
1937 }
1938 return cp->resolved_indy_entries_length();
1939 WB_END
1940
1941 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1942 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1943 ConstantPool* cp = ik->constants();
1944 if (cp->cache() == nullptr) {
1945 return -1;
1946 }
1947 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1948 WB_END
1949
1950 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
1951 ThreadToNativeFromVM ttnfv(thread);
1952 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1953 ResourceMark rm;
1954 stringStream st;
1955 {
1956 ThreadInVMfromNative ttvfn(thread); // back to VM
1957 ClassPrinter::print_classes(c, flags, &st);
1958 }
1959 jstring result = env->NewStringUTF(st.freeze());
1960 CHECK_JNI_EXCEPTION_(env, nullptr);
1961 return result;
1962 WB_END
1963
1964 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
1965 ThreadToNativeFromVM ttnfv(thread);
1966 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1967 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
1968 ResourceMark rm;
1969 stringStream st;
1970 {
1971 ThreadInVMfromNative ttvfn(thread); // back to VM
1972 ClassPrinter::print_methods(c, m, flags, &st);
1973 }
1974 jstring result = env->NewStringUTF(st.freeze());
1975 CHECK_JNI_EXCEPTION_(env, nullptr);
1976 return result;
1977 WB_END
1978
1979 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1980 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1981 VMThread::execute(&clear_ics);
1982 WB_END
1983
1984 template <typename T>
1985 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1986 assert(value != nullptr, "sanity");
1987 if (method == nullptr || name == nullptr) {
1988 return false;
1989 }
1990 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1991 CHECK_JNI_EXCEPTION_(env, false);
1992 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1993 // can't be in VM when we call JNI
1994 ThreadToNativeFromVM ttnfv(thread);
1995 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1996 CHECK_JNI_EXCEPTION_(env, false);
1997 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
1998 env->ReleaseStringUTFChars(name, flag_name);
1999 if (option == CompileCommandEnum::Unknown) {
2000 return false;
2001 }
2002 if (!CompilerOracle::option_matches_type(option, *value)) {
2003 return false;
2004 }
2005 return CompilerOracle::has_option_value(mh, option, *value);
2006 }
2007
2008 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2009 bool result;
2010 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2011 // can't be in VM when we call JNI
2012 ThreadToNativeFromVM ttnfv(thread);
2013 return booleanBox(thread, env, result);
2014 }
2015 return nullptr;
2016 WB_END
2017
2018 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2019 intx result;
2020 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2021 // can't be in VM when we call JNI
2022 ThreadToNativeFromVM ttnfv(thread);
2023 return longBox(thread, env, result);
2024 }
2025 return nullptr;
2026 WB_END
2027
2028 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2029 uintx result;
2030 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2031 // can't be in VM when we call JNI
2032 ThreadToNativeFromVM ttnfv(thread);
2033 return longBox(thread, env, result);
2034 }
2035 return nullptr;
2036 WB_END
2037
2038 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2039 double result;
2040 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2041 // can't be in VM when we call JNI
2042 ThreadToNativeFromVM ttnfv(thread);
2043 return doubleBox(thread, env, result);
2044 }
2045 return nullptr;
2046 WB_END
2047
2048 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2049 ccstr ccstrResult;
2050 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2051 // can't be in VM when we call JNI
2052 ThreadToNativeFromVM ttnfv(thread);
2053 jstring result = env->NewStringUTF(ccstrResult);
2054 CHECK_JNI_EXCEPTION_(env, nullptr);
2055 return result;
2056 }
2057 return nullptr;
2058 WB_END
2059
2060 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2061 const char* p = CDSConfig::default_archive_path();
2062 ThreadToNativeFromVM ttn(thread);
2063 jstring path_string = env->NewStringUTF(p);
2064
2065 CHECK_JNI_EXCEPTION_(env, nullptr);
2066
2067 return path_string;
2068 WB_END
2069
2070 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2071 return CDSConfig::is_using_archive();
2072 WB_END
2073
2074 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2075 #if INCLUDE_CDS
2076 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2077 #else
2078 ShouldNotReachHere();
2079 return (jint)-1;
2080 #endif
2081 WB_END
2082
2083 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2084 #if INCLUDE_CDS
2085 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2086 #else
2087 ShouldNotReachHere();
2088 return (jint)-1;
2089 #endif
2090 WB_END
2091
2092 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2093 return FileMapInfo::memory_mapping_failed();
2094 WB_END
2095
2096 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2097 ResourceMark rm(THREAD);
2098 oop str_oop = JNIHandles::resolve(str);
2099 int length;
2100 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2101 return StringTable::lookup_shared(chars, length) == str_oop;
2102 WB_END
2103
2104 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2105 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2106 WB_END
2107
2108 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2109 return ArchiveHeapLoader::is_mapped();
2110 WB_END
2111
2112 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2113 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2114 if (!k->is_instance_klass()) {
2115 return;
2116 }
2117 InstanceKlass *ik = InstanceKlass::cast(k);
2118 ik->link_class(THREAD); // may throw verification error
2119 WB_END
2120
2121 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2122 return ArchiveHeapLoader::is_mapped();
2123 WB_END
2124
2125 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2126 #if INCLUDE_CDS
2127 // An exploded build inhibits use of CDS. Therefore, for the
2128 // purpose of testing, the JVM can be treated as not having CDS
2129 // built in at all.
2130 return ClassLoader::has_jrt_entry();
2131 #else
2132 return false;
2133 #endif // INCLUDE_CDS
2134 WB_END
2135
2136 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2137 #if COMPILER2_OR_JVMCI
2138 return true;
2139 #else
2140 return false;
2141 #endif
2142 WB_END
2143
2144 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2145 #if INCLUDE_JVMCI
2146 return JVMCIGlobals::gc_supports_jvmci();
2147 #else
2148 return false;
2149 #endif
2150 WB_END
2151
2152 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2153 return HeapShared::can_write();
2154 WB_END
2155
2156
2157 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2158 #if INCLUDE_JFR
2159 return true;
2160 #else
2161 return false;
2162 #endif // INCLUDE_JFR
2163 WB_END
2164
2165 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2166 #if defined(DTRACE_ENABLED)
2167 return true;
2168 #else
2169 return false;
2170 #endif // DTRACE_ENABLED
2171 WB_END
2172
2173 #if INCLUDE_CDS
2174
2175 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2176 ResourceMark rm;
2177 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2178 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2179 return result;
2180 WB_END
2181
2182 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2183 ResourceMark rm;
2184 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2185 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2186 return result;
2187 WB_END
2188
2189 #endif // INCLUDE_CDS
2190
2191 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2192 class ReadMonitorsClosure : public HandshakeClosure {
2193 jboolean _executed;
2194
2195 void do_thread(Thread* th) {
2196 JavaThread* jt = JavaThread::cast(th);
2197 ResourceMark rm;
2198
2199 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2200
2201 if (!jt->has_last_Java_frame()) {
2202 return;
2203 }
2204 RegisterMap rmap(jt,
2205 RegisterMap::UpdateMap::include,
2206 RegisterMap::ProcessFrames::include,
2207 RegisterMap::WalkContinuation::skip);
2208 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2209 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2210 if (monitors != nullptr) {
2211 int len = monitors->length();
2212 // Walk monitors youngest to oldest
2213 for (int i = len - 1; i >= 0; i--) {
2214 MonitorInfo* mon_info = monitors->at(i);
2215 if (mon_info->eliminated()) continue;
2216 oop owner = mon_info->owner();
2217 if (owner != nullptr) {
2218 info->append(mon_info);
2219 }
2220 }
2221 }
2222 }
2223 _executed = true;
2224 }
2225
2226 public:
2227 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2228 jboolean executed() const { return _executed; }
2229 };
2230
2231 ReadMonitorsClosure rmc;
2232 if (thread_handle != nullptr) {
2233 ThreadsListHandle tlh;
2234 JavaThread* target = nullptr;
2235 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2236 if (is_alive) {
2237 Handshake::execute(&rmc, &tlh, target);
2238 }
2239 }
2240 return rmc.executed();
2241 WB_END
2242
2243 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2244 class TraceSelfClosure : public HandshakeClosure {
2245 jint _num_threads_completed;
2246
2247 void do_thread(Thread* th) {
2248 JavaThread* jt = JavaThread::cast(th);
2249 ResourceMark rm;
2250
2251 jt->print_on(tty);
2252 jt->print_stack_on(tty);
2253 tty->cr();
2254 Atomic::inc(&_num_threads_completed);
2255 }
2256
2257 public:
2258 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2259
2260 jint num_threads_completed() const { return _num_threads_completed; }
2261 };
2262 TraceSelfClosure tsc(Thread::current());
2263
2264 if (all_threads) {
2265 Handshake::execute(&tsc);
2266 } else if (thread_handle != nullptr) {
2267 ThreadsListHandle tlh;
2268 JavaThread* target = nullptr;
2269 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2270 if (is_alive) {
2271 Handshake::execute(&tsc, &tlh, target);
2272 }
2273 }
2274 return tsc.num_threads_completed();
2275 WB_END
2276
2277 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2278 class TraceSelfClosure : public AsyncHandshakeClosure {
2279 JavaThread* _self;
2280 void do_thread(Thread* th) {
2281 assert(th->is_Java_thread(), "sanity");
2282 // AsynchHandshake handshakes are only executed by target.
2283 assert(_self == th, "Must be");
2284 assert(Thread::current() == th, "Must be");
2285 JavaThread* jt = JavaThread::cast(th);
2286 ResourceMark rm;
2287 jt->print_on(tty);
2288 jt->print_stack_on(tty);
2289 tty->cr();
2290 }
2291
2292 public:
2293 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2294 };
2295 if (thread_handle != nullptr) {
2296 ThreadsListHandle tlh;
2297 JavaThread* target = nullptr;
2298 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2299 if (is_alive) {
2300 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2301 Handshake::execute(tsc, target);
2302 }
2303 }
2304 WB_END
2305
2306 static volatile int _emulated_lock = 0;
2307
2308 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2309 JavaThread* self = JavaThread::current();
2310
2311 {
2312 // Before trying to acquire the lock transition into a safepoint safe state.
2313 // Otherwise if either suspender or suspendee blocks for a safepoint
2314 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2315 // the lock without allowing the safepoint to progress.
2316 ThreadBlockInVM tbivm(self);
2317
2318 // We will deadlock here if we are 'suspender' and 'suspendee'
2319 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2320 // at the right place.
2321 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2322 assert(_emulated_lock == 1, "Must be locked");
2323
2324 // Sleep much longer in suspendee to force situation where
2325 // 'suspender' is waiting above to acquire lock.
2326 os::naked_short_sleep(suspender ? 1 : 10);
2327 }
2328 Atomic::store(&_emulated_lock, 0);
2329 WB_END
2330
2331 // Some convenience methods to deal with objects from java
2332 int WhiteBox::offset_for_field(const char* field_name, oop object,
2333 Symbol* signature_symbol) {
2334 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2335
2336 //Get the class of our object
2337 Klass* arg_klass = object->klass();
2338 //Turn it into an instance-klass
2339 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2340
2341 //Create symbols to look for in the class
2342 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2343
2344 //To be filled in with an offset of the field we're looking for
2345 fieldDescriptor fd;
2346
2347 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2348 if (res == nullptr) {
2349 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2350 name_symbol->as_C_string());
2351 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2352 }
2353
2354 //fetch the field at the offset we've found
2355 int dest_offset = fd.offset();
2356
2357 return dest_offset;
2358 }
2359
2360
2361 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2362 int offset = offset_for_field(field_name, object,
2363 vmSymbols::string_signature());
2364 oop string = object->obj_field(offset);
2365 if (string == nullptr) {
2366 return nullptr;
2367 }
2368 const char* ret = java_lang_String::as_utf8_string(string);
2369 return ret;
2370 }
2371
2372 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2373 int offset =
2374 offset_for_field(field_name, object, vmSymbols::bool_signature());
2375 bool ret = (object->bool_field(offset) == JNI_TRUE);
2376 return ret;
2377 }
2378
2379 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2380 ResourceMark rm;
2381 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2382 const char* klass_name = klass->external_name();
2383
2384 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2385
2386 // one by one registration natives for exception catching
2387 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2388 CHECK_JNI_EXCEPTION(env);
2389 for (int i = 0, n = method_count; i < n; ++i) {
2390 // Skip dummy entries
2391 if (method_array[i].fnPtr == nullptr) continue;
2392 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2393 jthrowable throwable_obj = env->ExceptionOccurred();
2394 if (throwable_obj != nullptr) {
2395 env->ExceptionClear();
2396 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2397 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2398 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2399 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2400 klass_name, method_array[i].name, method_array[i].signature);
2401 }
2402 } else {
2403 // Registration failed unexpectedly.
2404 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2405 klass_name, method_array[i].name, method_array[i].signature);
2406 env->UnregisterNatives(wbclass);
2407 break;
2408 }
2409 }
2410 }
2411 }
2412
2413 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2414 // can't be in VM when we call JNI
2415 ThreadToNativeFromVM ttnfv(thread);
2416 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2417 CHECK_JNI_EXCEPTION_(env, 0);
2418 int ret;
2419 {
2420 ThreadInVMfromNative ttvfn(thread); // back to VM
2421 ret = DirectivesParser::parse_string(dir, tty);
2422 }
2423 env->ReleaseStringUTFChars(compDirect, dir);
2424 // -1 for error parsing directive. Return 0 as number of directives added.
2425 if (ret == -1) {
2426 ret = 0;
2427 }
2428 return (jint) ret;
2429 WB_END
2430
2431 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2432 DirectivesStack::pop(count);
2433 WB_END
2434
2435 // Checks that the library libfile has the noexecstack bit set.
2436 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2437 jboolean ret = false;
2438 #ifdef LINUX
2439 // Can't be in VM when we call JNI.
2440 ThreadToNativeFromVM ttnfv(thread);
2441 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2442 CHECK_JNI_EXCEPTION_(env, 0);
2443 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2444 env->ReleaseStringUTFChars(libfile, lf);
2445 #endif
2446 return ret;
2447 WB_END
2448
2449 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2450 LINUX_ONLY(return OSContainer::is_containerized();)
2451 return false;
2452 WB_END
2453
2454 // Physical memory of the host machine (including containers)
2455 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2456 LINUX_ONLY(return os::Linux::physical_memory();)
2457 return os::physical_memory();
2458 WB_END
2459
2460 // Physical swap of the host machine (including containers), Linux only.
2461 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2462 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2463 return -1; // Not used/implemented on other platforms
2464 WB_END
2465
2466 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2467 jobject o,
2468 jstring proc_cgroups,
2469 jstring proc_self_cgroup,
2470 jstring proc_self_mountinfo))
2471 jint ret = 0;
2472 #ifdef LINUX
2473 ThreadToNativeFromVM ttnfv(thread);
2474 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2475 CHECK_JNI_EXCEPTION_(env, 0);
2476 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2477 CHECK_JNI_EXCEPTION_(env, 0);
2478 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2479 CHECK_JNI_EXCEPTION_(env, 0);
2480 u1 cg_type_flags = 0;
2481 // This sets cg_type_flags
2482 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2483 ret = (jint)cg_type_flags;
2484 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2485 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2486 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2487 #endif
2488 return ret;
2489 WB_END
2490
2491 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2492 os::print_os_info(tty);
2493 WB_END
2494
2495 // Elf decoder
2496 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2497 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2498 ElfFile::_do_not_cache_elf_section = true;
2499 #endif
2500 WB_END
2501
2502 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2503 return (jlong) ResolvedMethodTable::items_count();
2504 WB_END
2505
2506 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2507 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2508 WB_END
2509
2510 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2511 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2512 // Return size in bytes.
2513 return k->size() * wordSize;
2514 WB_END
2515
2516 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2517 // It explains how the thread's priority field is used for test state coordination.
2518 //
2519 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2520 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2521 jlong tid = java_lang_Thread::thread_id(target_oop);
2522 JavaThread* target = java_lang_Thread::thread(target_oop);
2523
2524 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2525 ThreadsListHandle tlh;
2526
2527 // Look up the target thread by tid to ensure it is present
2528 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2529 if (t == nullptr) {
2530 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2531 }
2532
2533 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2534 // Allow target to terminate by boosting priority
2535 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2536
2537 // Now wait for the target to terminate
2538 while (!target->is_terminated()) {
2539 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2540 os::naked_short_sleep(0);
2541 }
2542
2543 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2544
2545 // Now release the GC inducing thread - we have to re-resolve the external oop that
2546 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2547 oop original = JNIHandles::resolve_non_null(target_handle);
2548 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2549
2550 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2551
2552 // The Java code should be creating garbage and triggering GC, which would potentially move
2553 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2554 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2555 // kick in.
2556 for (int i = 0; i < 5; i++) {
2557 oop original = JNIHandles::resolve_non_null(target_handle);
2558 oop current = t->threadObj();
2559 if (original != current) {
2560 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2561 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2562 } else {
2563 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2564 ThreadBlockInVM tbivm(thread);
2565 os::naked_short_sleep(50);
2566 }
2567 }
2568 WB_END
2569
2570 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2571 ResourceMark rm; // for verify
2572 stringStream st;
2573 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2574 frame* current_frame = fst.current();
2575 if (log) {
2576 current_frame->print_value_on(&st, nullptr);
2577 }
2578 current_frame->verify(fst.register_map());
2579 }
2580 if (log) {
2581 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2582 tty->print_raw(st.freeze());
2583 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2584 }
2585 WB_END
2586
2587 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2588 #if INCLUDE_JVMTI
2589 return JNI_TRUE;
2590 #else
2591 return JNI_FALSE;
2592 #endif
2593 WB_END
2594
2595 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2596 os::naked_short_sleep(time);
2597 WB_END
2598
2599 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2600 ThreadToNativeFromVM ttn(thread);
2601 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2602 CHECK_JNI_EXCEPTION_(env, nullptr);
2603 return info_string;
2604 WB_END
2605
2606 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2607 GCLocker::lock_critical(thread);
2608 WB_END
2609
2610 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2611 GCLocker::unlock_critical(thread);
2612 WB_END
2613
2614 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2615 #if INCLUDE_G1GC
2616 if (!UseG1GC) {
2617 ShouldNotReachHere();
2618 return;
2619 }
2620 oop obj = JNIHandles::resolve(o);
2621 G1CollectedHeap::heap()->pin_object(thread, obj);
2622 #else
2623 ShouldNotReachHere();
2624 #endif // INCLUDE_G1GC
2625 WB_END
2626
2627 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2628 #if INCLUDE_G1GC
2629 if (!UseG1GC) {
2630 ShouldNotReachHere();
2631 return;
2632 }
2633 oop obj = JNIHandles::resolve(o);
2634 G1CollectedHeap::heap()->unpin_object(thread, obj);
2635 #else
2636 ShouldNotReachHere();
2637 #endif // INCLUDE_G1GC
2638 WB_END
2639
2640 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2641 if (!Continuations::enabled()) {
2642 tty->print_cr("WB error: must be Continuations::enabled()!");
2643 return JNI_FALSE;
2644 }
2645 jboolean result = false;
2646 #if INCLUDE_JVMTI
2647 if (enable) {
2648 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2649 } else {
2650 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2651 }
2652 #endif
2653 return result;
2654 WB_END
2655
2656 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2657 void* const from = (void*)addr;
2658 void* const to = (void*)(addr + size);
2659 if (from > to) {
2660 os::pretouch_memory(from, to, os::vm_page_size());
2661 }
2662 WB_END
2663
2664 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2665 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2666 WB_END
2667
2668 // Reports resident set size (RSS) in bytes
2669 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2670 return os::rss();
2671 WB_END
2672
2673 #define CC (char*)
2674
2675 static JNINativeMethod methods[] = {
2676 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2677 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2678 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2679 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2680 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2681 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2682 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2683 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2684 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2685 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2686 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2687 {CC"parseCommandLine0",
2688 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2689 (void*) &WB_ParseCommandLine
2690 },
2691 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2692 (void*)&WB_AddToBootstrapClassLoaderSearch},
2693 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2694 (void*)&WB_AddToSystemClassLoaderSearch},
2695 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2696 (void*)&WB_GetCompressedOopsMaxHeapSize},
2697 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2698 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2699 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2700 #if INCLUDE_CDS
2701 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2702 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2703 #endif
2704 #if INCLUDE_G1GC
2705 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2706 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2707 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2708 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2709 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2710 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2711 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2712 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2713 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2714 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2715 (void*)&WB_G1AuxiliaryMemoryUsage },
2716 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2717 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2718 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2719 #endif // INCLUDE_G1GC
2720 #if INCLUDE_PARALLELGC
2721 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2722 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2723 #endif
2724 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2725 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2726 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2727 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2728 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2729 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2730 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2731 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2732 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2733 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2734 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2735 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2736 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2737 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2738 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2739 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2740 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2741 (void*)&WB_DeoptimizeMethod },
2742 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2743 (void*)&WB_IsMethodCompiled },
2744 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2745 (void*)&WB_IsMethodCompilable},
2746 {CC"isMethodQueuedForCompilation0",
2747 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2748 {CC"isIntrinsicAvailable0",
2749 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2750 (void*)&WB_IsIntrinsicAvailable},
2751 {CC"makeMethodNotCompilable0",
2752 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2753 {CC"testSetDontInlineMethod0",
2754 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2755 {CC"getMethodCompilationLevel0",
2756 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2757 {CC"getMethodDecompileCount0",
2758 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2759 {CC"getMethodTrapCount0",
2760 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2761 (void*)&WB_GetMethodTrapCount},
2762 {CC"getDeoptCount0",
2763 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2764 {CC"getMethodEntryBci0",
2765 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2766 {CC"getCompileQueueSize",
2767 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2768 {CC"testSetForceInlineMethod0",
2769 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2770 {CC"enqueueMethodForCompilation0",
2771 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2772 {CC"enqueueInitializerForCompilation0",
2773 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2774 {CC"markMethodProfiled",
2775 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2776 {CC"clearMethodState0",
2777 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2778 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2779 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2780 {CC"matchesMethod",
2781 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2782 (void*)&WB_MatchesMethod},
2783 {CC"matchesInline",
2784 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2785 (void*)&WB_MatchesInline},
2786 {CC"shouldPrintAssembly",
2787 CC"(Ljava/lang/reflect/Executable;I)Z",
2788 (void*)&WB_ShouldPrintAssembly},
2789
2790 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2791 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2792 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2793 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2794 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2795 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2796 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2797 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2798 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2799 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2800 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2801 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2802 (void*)&WB_SetStringVMFlag},
2803 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2804 (void*)&WB_GetBooleanVMFlag},
2805 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2806 (void*)&WB_GetIntVMFlag},
2807 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2808 (void*)&WB_GetUintVMFlag},
2809 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2810 (void*)&WB_GetIntxVMFlag},
2811 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2812 (void*)&WB_GetUintxVMFlag},
2813 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2814 (void*)&WB_GetUint64VMFlag},
2815 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2816 (void*)&WB_GetSizeTVMFlag},
2817 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2818 (void*)&WB_GetDoubleVMFlag},
2819 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2820 (void*)&WB_GetStringVMFlag},
2821 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2822 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2823 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2824 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2825 {CC"allocateMetaspace",
2826 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2827 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2828 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2829 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2830 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2831 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2832 (void*)&WB_GetNMethod },
2833 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2834 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2835 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2836 {CC"getCompilationActivityMode",
2837 CC"()I", (void*)&WB_GetCompilationActivityMode},
2838 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2839 (void*)&WB_GetMethodData },
2840 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2841 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2842 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2843 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2844 (void*)&WB_DefineModule },
2845 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2846 (void*)&WB_AddModuleExports },
2847 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2848 (void*)&WB_AddReadsModule },
2849 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2850 (void*)&WB_AddModuleExportsToAllUnnamed },
2851 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2852 (void*)&WB_AddModuleExportsToAll },
2853 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2854 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2855 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
2856 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2857 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2858 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2859 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2860 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2861 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2862 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2863 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2864 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2865 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2866 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2867 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2868 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2869 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2870 {CC"getMethodBooleanOption",
2871 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2872 (void*)&WB_GetMethodBooleaneOption},
2873 {CC"getMethodIntxOption",
2874 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2875 (void*)&WB_GetMethodIntxOption},
2876 {CC"getMethodUintxOption",
2877 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2878 (void*)&WB_GetMethodUintxOption},
2879 {CC"getMethodDoubleOption",
2880 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2881 (void*)&WB_GetMethodDoubleOption},
2882 {CC"getMethodStringOption",
2883 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2884 (void*)&WB_GetMethodStringOption},
2885 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2886 (void*)&WB_GetDefaultArchivePath},
2887 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2888 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2889 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2890 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2891 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2892 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2893 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2894 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2895 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2896 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2897 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2898 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2899 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2900 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2901 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2902 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2903
2904 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2905 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2906 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2907 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2908 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2909 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2910 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2911 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2912 (void*)&WB_AddCompilerDirective },
2913 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2914 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2915 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2916 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2917 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2918 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2919 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2920 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2921 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2922 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2923 (void*)&WB_ConcurrentGCRunTo},
2924 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2925 (void*)&WB_CheckLibSpecifiesNoexecstack},
2926 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2927 {CC"validateCgroup",
2928 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2929 (void*)&WB_ValidateCgroup },
2930 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2931 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2932 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2933 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2934 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2935 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2936 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2937
2938 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2939 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2940 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2941 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2942 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2943 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2944 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2945 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2946 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2947 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2948 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2949
2950 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2951 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2952 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2953
2954 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2955 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2956 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
2957 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
2958 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2959 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2960 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2961 {CC"rss", CC"()J", (void*)&WB_Rss},
2962 };
2963
2964
2965 #undef CC
2966
2967 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2968 {
2969 if (WhiteBoxAPI) {
2970 // Make sure that wbclass is loaded by the null classloader
2971 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2972 Handle loader(THREAD, ik->class_loader());
2973 if (loader.is_null()) {
2974 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2975 WhiteBox::set_used();
2976 }
2977 }
2978 }
2979 JVM_END