1 /*
2 * Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds.h"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.hpp"
31 #include "cds/metaspaceShared.hpp"
32 #include "classfile/classLoaderDataGraph.hpp"
33 #include "classfile/classLoaderStats.hpp"
34 #include "classfile/classPrinter.hpp"
35 #include "classfile/javaClasses.inline.hpp"
36 #include "classfile/modules.hpp"
37 #include "classfile/protectionDomainCache.hpp"
38 #include "classfile/stringTable.hpp"
39 #include "classfile/symbolTable.hpp"
40 #include "classfile/systemDictionary.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/codeCache.hpp"
43 #include "compiler/compilationPolicy.hpp"
44 #include "compiler/directivesParser.hpp"
45 #include "compiler/methodMatcher.hpp"
46 #include "gc/shared/concurrentGCBreakpoints.hpp"
47 #include "gc/shared/gcConfig.hpp"
48 #include "gc/shared/gcLocker.inline.hpp"
49 #include "gc/shared/genArguments.hpp"
50 #include "jvmtifiles/jvmtiEnv.hpp"
51 #include "logging/log.hpp"
52 #include "memory/iterator.hpp"
53 #include "memory/metadataFactory.hpp"
54 #include "memory/iterator.inline.hpp"
55 #include "memory/metaspace/testHelpers.hpp"
56 #include "memory/metaspaceUtils.hpp"
57 #include "memory/oopFactory.hpp"
58 #include "memory/resourceArea.hpp"
59 #include "memory/universe.hpp"
60 #include "nmt/mallocSiteTable.hpp"
61 #include "nmt/memTracker.hpp"
62 #include "oops/array.hpp"
63 #include "oops/compressedOops.hpp"
64 #include "oops/compressedOops.inline.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/objArrayOop.inline.hpp"
73 #include "oops/typeArrayOop.inline.hpp"
74 #include "prims/jvmtiEnvBase.hpp"
75 #include "prims/resolvedMethodTable.hpp"
76 #include "prims/wbtestmethods/parserTests.hpp"
77 #include "prims/whitebox.inline.hpp"
78 #include "runtime/arguments.hpp"
79 #include "runtime/atomic.hpp"
80 #include "runtime/deoptimization.hpp"
81 #include "runtime/fieldDescriptor.inline.hpp"
82 #include "runtime/flags/jvmFlag.hpp"
83 #include "runtime/flags/jvmFlagAccess.hpp"
84 #include "runtime/frame.inline.hpp"
85 #include "runtime/handles.inline.hpp"
86 #include "runtime/handshake.hpp"
87 #include "runtime/interfaceSupport.inline.hpp"
88 #include "runtime/javaCalls.hpp"
89 #include "runtime/javaThread.inline.hpp"
90 #include "runtime/jniHandles.inline.hpp"
91 #include "runtime/lockStack.hpp"
92 #include "runtime/os.hpp"
93 #include "runtime/stackFrameStream.inline.hpp"
94 #include "runtime/synchronizer.hpp"
95 #include "runtime/threadSMR.hpp"
96 #include "runtime/vframe.hpp"
97 #include "runtime/vm_version.hpp"
98 #include "services/memoryService.hpp"
99 #include "utilities/align.hpp"
100 #include "utilities/checkedCast.hpp"
101 #include "utilities/debug.hpp"
102 #include "utilities/elfFile.hpp"
103 #include "utilities/exceptions.hpp"
104 #include "utilities/macros.hpp"
105 #include "utilities/nativeCallStack.hpp"
106 #include "utilities/ostream.hpp"
107 #if INCLUDE_G1GC
108 #include "gc/g1/g1Arguments.hpp"
109 #include "gc/g1/g1CollectedHeap.inline.hpp"
110 #include "gc/g1/g1ConcurrentMark.hpp"
111 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
112 #include "gc/g1/heapRegionManager.hpp"
113 #include "gc/g1/heapRegionRemSet.inline.hpp"
114 #endif // INCLUDE_G1GC
115 #if INCLUDE_PARALLELGC
116 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
117 #endif // INCLUDE_PARALLELGC
118 #if INCLUDE_SERIALGC
119 #include "gc/serial/serialHeap.hpp"
120 #endif // INCLUDE_SERIALGC
121 #if INCLUDE_ZGC
122 #include "gc/z/zAddress.inline.hpp"
123 #endif // INCLUDE_ZGC
124 #if INCLUDE_JVMCI
125 #include "jvmci/jvmciEnv.hpp"
126 #include "jvmci/jvmciRuntime.hpp"
127 #endif
128 #ifdef LINUX
129 #include "cgroupSubsystem_linux.hpp"
130 #include "osContainer_linux.hpp"
131 #include "os_linux.hpp"
132 #endif
133
134 #define CHECK_JNI_EXCEPTION_(env, value) \
135 do { \
136 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
137 THREAD->clear_pending_jni_exception_check(); \
138 if (HAS_PENDING_EXCEPTION) { \
139 return(value); \
140 } \
141 } while (0)
142
143 #define CHECK_JNI_EXCEPTION(env) \
144 do { \
145 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
146 THREAD->clear_pending_jni_exception_check(); \
147 if (HAS_PENDING_EXCEPTION) { \
148 return; \
149 } \
150 } while (0)
151
152 bool WhiteBox::_used = false;
153 volatile bool WhiteBox::compilation_locked = false;
154
155 class VM_WhiteBoxOperation : public VM_Operation {
156 public:
157 VM_WhiteBoxOperation() { }
158 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
159 bool allow_nested_vm_operations() const { return true; }
160 };
161
162
163 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
164 return (jlong)(void*)JNIHandles::resolve(obj);
165 WB_END
166
167 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
168 return heapOopSize;
169 WB_END
170
171 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
172 return (jint)os::vm_page_size();
173 WB_END
174
175 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
176 return os::vm_allocation_granularity();
177 WB_END
178
179 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
180 return os::large_page_size();
181 WB_END
182
183 class WBIsKlassAliveClosure : public LockedClassesDo {
184 Symbol* _name;
185 int _count;
186 public:
187 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
188
189 void do_klass(Klass* k) {
190 Symbol* ksym = k->name();
191 if (ksym->fast_compare(_name) == 0) {
192 _count++;
193 } else if (k->is_instance_klass()) {
194 // Need special handling for hidden classes because the JVM
195 // appends "+<hex-address>" to hidden class names.
196 InstanceKlass *ik = InstanceKlass::cast(k);
197 if (ik->is_hidden()) {
198 ResourceMark rm;
199 char* k_name = ksym->as_C_string();
200 // Find the first '+' char and truncate the string at that point.
201 // NOTE: This will not work correctly if the original hidden class
202 // name contains a '+'.
203 char* plus_char = strchr(k_name, '+');
204 if (plus_char != nullptr) {
205 *plus_char = 0;
206 char* c_name = _name->as_C_string();
207 if (strcmp(c_name, k_name) == 0) {
208 _count++;
209 }
210 }
211 }
212 }
213 }
214
215 int count() const {
216 return _count;
217 }
218 };
219
220 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
221 oop h_name = JNIHandles::resolve(name);
222 if (h_name == nullptr) {
223 return 0;
224 }
225 Symbol* sym = java_lang_String::as_symbol(h_name);
226 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
227
228 WBIsKlassAliveClosure closure(sym);
229 ClassLoaderDataGraph::classes_do(&closure);
230
231 // Return the count of alive classes with this name.
232 return closure.count();
233 WB_END
234
235 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
236 oop h_name = JNIHandles::resolve(name);
237 if (h_name == nullptr) {
238 return 0;
239 }
240 Symbol* sym = java_lang_String::as_symbol(h_name);
241 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
242 return (jint)sym->refcount();
243 WB_END
244
245
246 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
247 #if INCLUDE_JVMTI
248 ResourceMark rm;
249 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
250 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
251 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
252 assert(err == JVMTI_ERROR_NONE, "must not fail");
253 #endif
254 }
255 WB_END
256
257 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
258 #if INCLUDE_JVMTI
259 ResourceMark rm;
260 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
261 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
262 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
263 assert(err == JVMTI_ERROR_NONE, "must not fail");
264 #endif
265 }
266 WB_END
267
268
269 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
270 return (jlong)Arguments::max_heap_for_compressed_oops();
271 }
272 WB_END
273
274 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
275 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
276 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
277 MinHeapSize,
278 InitialHeapSize,
279 MaxHeapSize,
280 SpaceAlignment,
281 HeapAlignment);
282 }
283 WB_END
284
285 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
286 size_t granularity = os::vm_allocation_granularity();
287 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
288 VirtualSpace vs;
289 vs.initialize(rhs, 50 * granularity);
290
291 // Check if constraints are complied
292 if (!( UseCompressedOops && rhs.base() != nullptr &&
293 CompressedOops::base() != nullptr &&
294 CompressedOops::use_implicit_null_checks() )) {
295 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
296 "\tUseCompressedOops is %d\n"
297 "\trhs.base() is " PTR_FORMAT "\n"
298 "\tCompressedOops::base() is " PTR_FORMAT "\n"
299 "\tCompressedOops::use_implicit_null_checks() is %d",
300 UseCompressedOops,
301 p2i(rhs.base()),
302 p2i(CompressedOops::base()),
303 CompressedOops::use_implicit_null_checks());
304 return;
305 }
306 tty->print_cr("Reading from no access area... ");
307 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
308 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
309 WB_END
310
311 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
312 size_t magnitude, size_t iterations) {
313 size_t granularity = os::vm_allocation_granularity();
314 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
315 VirtualSpace vs;
316 if (!vs.initialize(rhs, 0)) {
317 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
318 return 3;
319 }
320
321 int seed = os::random();
322 tty->print_cr("Random seed is %d", seed);
323
324 for (size_t i = 0; i < iterations; i++) {
325
326 // Whether we will shrink or grow
327 bool shrink = os::random() % 2L == 0;
328
329 // Get random delta to resize virtual space
330 size_t delta = (size_t)os::random() % magnitude;
331
332 // If we are about to shrink virtual space below zero, then expand instead
333 if (shrink && vs.committed_size() < delta) {
334 shrink = false;
335 }
336
337 // Resizing by delta
338 if (shrink) {
339 vs.shrink_by(delta);
340 } else {
341 // If expanding fails expand_by will silently return false
342 vs.expand_by(delta, true);
343 }
344 }
345 return 0;
346 }
347
348 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
349 jlong reserved_space_size, jlong magnitude, jlong iterations))
350 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
351 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
352 iterations);
353 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
354 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
355 return 1;
356 }
357
358 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
359 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
360 if (sizeof(size_t) < sizeof(jlong)) {
361 jlong size_t_max_value = (jlong)SIZE_MAX;
362 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
363 || iterations > size_t_max_value) {
364 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
365 return 2;
366 }
367 }
368
369 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
370 (size_t) magnitude, (size_t) iterations);
371 WB_END
372
373 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
374 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
375 WB_END
376
377 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
378 #if INCLUDE_JVMCI
379 return JVMCI::shared_library_exists();
380 #endif
381 return false;
382 WB_END
383
384 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
385 #if INCLUDE_JVMCI
386 if (EnableJVMCI) {
387 // Enter the JVMCI env that will be used by the CompileBroker.
388 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
389 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
390 }
391 #endif
392 return false;
393 WB_END
394
395 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
396 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
397 WB_END
398
399 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
400 return GCConfig::is_gc_selected_ergonomically();
401 WB_END
402
403 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
404 oop p = JNIHandles::resolve(obj);
405 #if INCLUDE_G1GC
406 if (UseG1GC) {
407 G1CollectedHeap* g1h = G1CollectedHeap::heap();
408 const HeapRegion* hr = g1h->heap_region_containing(p);
409 return hr->is_old_or_humongous();
410 }
411 #endif
412 #if INCLUDE_PARALLELGC
413 if (UseParallelGC) {
414 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
415 return !psh->is_in_young(p);
416 }
417 #endif
418 #if INCLUDE_ZGC
419 if (UseZGC) {
420 if (ZGenerational) {
421 return ZHeap::heap()->is_old(to_zaddress(p));
422 } else {
423 return Universe::heap()->is_in(p);
424 }
425 }
426 #endif
427 #if INCLUDE_SHENANDOAHGC
428 if (UseShenandoahGC) {
429 return Universe::heap()->is_in(p);
430 }
431 #endif
432 #if INCLUDE_SERIALGC
433 if (UseSerialGC) {
434 return !SerialHeap::heap()->is_in_young(p);
435 }
436 #endif
437 ShouldNotReachHere();
438 return false;
439 WB_END
440
441 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
442 oop p = JNIHandles::resolve(obj);
443 return p->size() * HeapWordSize;
444 WB_END
445
446 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
447 return (jlong)SpaceAlignment;
448 WB_END
449
450 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
451 return (jlong)HeapAlignment;
452 WB_END
453
454 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
455 return Universe::heap()->supports_concurrent_gc_breakpoints();
456 WB_END
457
458 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
459 ConcurrentGCBreakpoints::acquire_control();
460 WB_END
461
462 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
463 ConcurrentGCBreakpoints::release_control();
464 WB_END
465
466 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
467 ConcurrentGCBreakpoints::run_to_idle();
468 WB_END
469
470 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
471 Handle h_name(THREAD, JNIHandles::resolve(at));
472 ResourceMark rm;
473 const char* c_name = java_lang_String::as_utf8_string(h_name());
474 return ConcurrentGCBreakpoints::run_to(c_name);
475 WB_END
476
477 #if INCLUDE_G1GC
478
479 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
480 if (UseG1GC) {
481 G1CollectedHeap* g1h = G1CollectedHeap::heap();
482 oop result = JNIHandles::resolve(obj);
483 const HeapRegion* hr = g1h->heap_region_containing(result);
484 return hr->is_humongous();
485 }
486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
487 WB_END
488
489 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
490 if (UseG1GC) {
491 G1CollectedHeap* g1h = G1CollectedHeap::heap();
492 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
493 return hr->is_humongous();
494 }
495 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
496 WB_END
497
498 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
499 if (UseG1GC) {
500 G1CollectedHeap* g1h = G1CollectedHeap::heap();
501 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
502 return hr->is_free();
503 }
504 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
505 WB_END
506
507 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
508 if (UseG1GC) {
509 G1CollectedHeap* g1h = G1CollectedHeap::heap();
510 size_t nr = g1h->max_regions();
511 return (jlong)nr;
512 }
513 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
514 WB_END
515
516 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
517 if (UseG1GC) {
518 G1CollectedHeap* g1h = G1CollectedHeap::heap();
519 size_t nr = g1h->num_free_regions();
520 return (jlong)nr;
521 }
522 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
523 WB_END
524
525 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
526 if (UseG1GC) {
527 G1CollectedHeap* g1h = G1CollectedHeap::heap();
528 return g1h->concurrent_mark()->cm_thread()->in_progress();
529 }
530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
531 WB_END
532
533 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
534 if (UseG1GC) {
535 G1CollectedHeap* g1h = G1CollectedHeap::heap();
536 G1ConcurrentMark* cm = g1h->concurrent_mark();
537 return cm->completed_mark_cycles();
538 }
539 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
540 WB_END
541
542 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
543 if (UseG1GC) {
544 return (jint)HeapRegion::GrainBytes;
545 }
546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
547 WB_END
548
549 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
550 if (UseG1GC) {
551 return G1CollectedHeap::heap()->has_uncommittable_regions();
552 }
553 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
554 WB_END
555
556 #endif // INCLUDE_G1GC
557
558 #if INCLUDE_PARALLELGC
559
560 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
561 if (UseParallelGC) {
562 return GenAlignment;
563 }
564 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
565 WB_END
566
567 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
568 if (UseParallelGC) {
569 return GenAlignment;
570 }
571 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
572 WB_END
573
574 #endif // INCLUDE_PARALLELGC
575
576 #if INCLUDE_G1GC
577
578 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
579 if (UseG1GC) {
580 ResourceMark rm(THREAD);
581 G1CollectedHeap* g1h = G1CollectedHeap::heap();
582 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
583 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
584 return JNIHandles::make_local(THREAD, h());
585 }
586 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
587 WB_END
588
589 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
590 if (UseG1GC) {
591 G1NUMA* numa = G1NUMA::numa();
592 return (jint)numa->num_active_nodes();
593 }
594 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
595 WB_END
596
597 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
598 if (UseG1GC) {
599 G1NUMA* numa = G1NUMA::numa();
600 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
601 const uint* node_ids = numa->node_ids();
602
603 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
604 for (int i = 0; i < num_node_ids; i++) {
605 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
606 }
607 return (jintArray) JNIHandles::make_local(THREAD, result);
608 }
609 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
610 WB_END
611
612 class OldRegionsLivenessClosure: public HeapRegionClosure {
613
614 private:
615 const int _liveness;
616 size_t _total_count;
617 size_t _total_memory;
618 size_t _total_memory_to_free;
619
620 public:
621 OldRegionsLivenessClosure(int liveness) :
622 _liveness(liveness),
623 _total_count(0),
624 _total_memory(0),
625 _total_memory_to_free(0) { }
626
627 size_t total_count() { return _total_count; }
628 size_t total_memory() { return _total_memory; }
629 size_t total_memory_to_free() { return _total_memory_to_free; }
630
631 bool do_heap_region(HeapRegion* r) {
632 if (r->is_old()) {
633 size_t live = r->live_bytes();
634 size_t size = r->used();
635 size_t reg_size = HeapRegion::GrainBytes;
636 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
637 _total_memory += size;
638 ++_total_count;
639 if (size == reg_size) {
640 // We don't include non-full regions since they are unlikely included in mixed gc
641 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
642 _total_memory_to_free += size - live;
643 }
644 }
645 }
646 return false;
647 }
648 };
649
650
651 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
652 if (!UseG1GC) {
653 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
654 }
655 if (liveness < 0) {
656 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
657 }
658
659 G1CollectedHeap* g1h = G1CollectedHeap::heap();
660 OldRegionsLivenessClosure rli(liveness);
661 g1h->heap_region_iterate(&rli);
662
663 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
664 result->long_at_put(0, rli.total_count());
665 result->long_at_put(1, rli.total_memory());
666 result->long_at_put(2, rli.total_memory_to_free());
667 return (jlongArray) JNIHandles::make_local(THREAD, result);
668 WB_END
669
670 #endif // INCLUDE_G1GC
671
672 // Alloc memory using the test memory type so that we can use that to see if
673 // NMT picks it up correctly
674 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
675 jlong addr = 0;
676 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
677 return addr;
678 WB_END
679
680 // Alloc memory with pseudo call stack. The test can create pseudo malloc
681 // allocation site to stress the malloc tracking.
682 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
683 address pc = (address)(size_t)pseudo_stack;
684 NativeCallStack stack(&pc, 1);
685 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
686 WB_END
687
688 // Alloc memory with pseudo call stack and specific memory type.
689 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
690 address pc = (address)(size_t)pseudo_stack;
691 NativeCallStack stack(&pc, 1);
692 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
693 WB_END
694
695 // Free the memory allocated by NMTAllocTest
696 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
697 os::free((void*)(uintptr_t)mem);
698 WB_END
699
700 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
701 jlong addr = 0;
702
703 addr = (jlong)(uintptr_t)os::reserve_memory(size);
704 MemTracker::record_virtual_memory_type((address)addr, mtTest);
705
706 return addr;
707 WB_END
708
709 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
710 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
711 MemTracker::record_virtual_memory_type((address)addr, mtTest);
712
713 return addr;
714 WB_END
715
716 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
717 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
718 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
719 WB_END
720
721 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
722 os::uncommit_memory((char *)(uintptr_t)addr, size);
723 WB_END
724
725 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
726 os::release_memory((char *)(uintptr_t)addr, size);
727 WB_END
728
729 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
730 int hash_size = MallocSiteTable::hash_buckets();
731 assert(hash_size > 0, "NMT hash_size should be > 0");
732 return (jint)hash_size;
733 WB_END
734
735 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
736 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
737 return (jlong)arena;
738 WB_END
739
740 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
741 Arena* a = (Arena*)arena;
742 delete a;
743 WB_END
744
745 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
746 Arena* a = (Arena*)arena;
747 a->Amalloc(size_t(size));
748 WB_END
749
750 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
751 assert(method != nullptr, "method should not be null");
752 ThreadToNativeFromVM ttn(thread);
753 return env->FromReflectedMethod(method);
754 }
755
756 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
757 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
758 private:
759 int _result;
760 const bool _make_not_entrant;
761 public:
762 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
763 _result(0), _make_not_entrant(make_not_entrant) { }
764 int result() const { return _result; }
765
766 void doit() {
767 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
768 if (t->has_last_Java_frame()) {
769 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
770 frame* f = fst.current();
771 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
772 Deoptimization::deoptimize(t, *f);
773 if (_make_not_entrant) {
774 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
775 assert(cm != nullptr, "sanity check");
776 cm->make_not_entrant();
777 }
778 ++_result;
779 }
780 }
781 }
782 }
783 }
784 };
785
786 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
787 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
788 VMThread::execute(&op);
789 return op.result();
790 WB_END
791
792 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
793 bool result = false;
794 if (thread->has_last_Java_frame()) {
795 RegisterMap reg_map(thread,
796 RegisterMap::UpdateMap::include,
797 RegisterMap::ProcessFrames::include,
798 RegisterMap::WalkContinuation::skip);
799 javaVFrame *jvf = thread->last_java_vframe(®_map);
800 for (jint d = 0; d < depth && jvf != nullptr; d++) {
801 jvf = jvf->java_sender();
802 }
803 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
804 }
805 return result;
806 WB_END
807
808 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
809 DeoptimizationScope deopt_scope;
810 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
811 deopt_scope.deoptimize_marked();
812 WB_END
813
814 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
815 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
816 int result = 0;
817 CHECK_JNI_EXCEPTION_(env, result);
818
819 DeoptimizationScope deopt_scope;
820 {
821 MutexLocker mu(Compile_lock);
822 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
823 if (is_osr) {
824 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
825 } else {
826 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
827 if (mh->code() != nullptr) {
828 deopt_scope.mark(mh->code());
829 ++result;
830 }
831 }
832 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
833 }
834
835 deopt_scope.deoptimize_marked();
836
837 return result;
838 WB_END
839
840 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
841 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
842 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
843 MutexLocker mu(Compile_lock);
844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
845 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
846 if (code == nullptr) {
847 return JNI_FALSE;
848 }
849 return !code->is_marked_for_deoptimization();
850 WB_END
851
852 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
853 if (comp == nullptr) {
854 return true;
855 }
856 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
857 bool exclude = directive->ExcludeOption;
858 DirectivesStack::release(directive);
859 return exclude;
860 }
861
862 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
863 if (is_osr) {
864 return CompilationPolicy::can_be_osr_compiled(mh, level);
865 } else {
866 return CompilationPolicy::can_be_compiled(mh, level);
867 }
868 }
869
870 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
871 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
872 return false;
873 }
874 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
875 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
876 MutexLocker mu(Compile_lock);
877 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
878
879 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
880 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
881 // to exclude a compilation of 'method'.
882 if (comp_level == CompLevel_any) {
883 // Both compilers could have ExcludeOption set. Check all combinations.
884 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
885 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
886 if (excluded_c1 && excluded_c2) {
887 // Compilation of 'method' excluded by both compilers.
888 return false;
889 }
890
891 if (excluded_c1) {
892 // C1 only has ExcludeOption set: Check if compilable with C2.
893 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
894 } else if (excluded_c2) {
895 // C2 only has ExcludeOption set: Check if compilable with C1.
896 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
897 }
898 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
899 // Compilation of 'method' excluded by compiler used for 'comp_level'.
900 return false;
901 }
902
903 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
904 WB_END
905
906 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
907 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
909 MutexLocker mu(Compile_lock);
910 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
911 return mh->queued_for_compilation();
912 WB_END
913
914 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
915 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
916 return false; // Intrinsic is not available on a non-existent compilation level.
917 }
918 jmethodID method_id, compilation_context_id;
919 method_id = reflected_method_to_jmid(thread, env, method);
920 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
921 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
922
923 DirectiveSet* directive;
924 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
925 assert(comp != nullptr, "compiler not available");
926 if (compilation_context != nullptr) {
927 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
928 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
929 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
930 directive = DirectivesStack::getMatchingDirective(cch, comp);
931 } else {
932 // Calling with null matches default directive
933 directive = DirectivesStack::getDefaultDirective(comp);
934 }
935 bool result = comp->is_intrinsic_available(mh, directive);
936 DirectivesStack::release(directive);
937 return result;
938 WB_END
939
940 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
941 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
942 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
943 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
944 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
945 return (code != nullptr ? code->comp_level() : CompLevel_none);
946 WB_END
947
948 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
949 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
950 CHECK_JNI_EXCEPTION(env);
951 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
952 if (is_osr) {
953 mh->set_not_osr_compilable("WhiteBox", comp_level);
954 } else {
955 mh->set_not_compilable("WhiteBox", comp_level);
956 }
957 WB_END
958
959 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
960 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
961 CHECK_JNI_EXCEPTION_(env, 0);
962 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
963 uint cnt = 0;
964 MethodData* mdo = mh->method_data();
965 if (mdo != nullptr) {
966 cnt = mdo->decompile_count();
967 }
968 return cnt;
969 WB_END
970
971 // Get the trap count of a method for a specific reason. If the trap count for
972 // that reason did overflow, this includes the overflow trap count of the method.
973 // If 'reason' is null, the sum of the traps for all reasons will be returned.
974 // This number includes the overflow trap count if the trap count for any reason
975 // did overflow.
976 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
977 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
978 CHECK_JNI_EXCEPTION_(env, 0);
979 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
980 uint cnt = 0;
981 MethodData* mdo = mh->method_data();
982 if (mdo != nullptr) {
983 ResourceMark rm(THREAD);
984 char* reason_str = (reason_obj == nullptr) ?
985 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
986 bool overflow = false;
987 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
988 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
989 cnt = mdo->trap_count(reason);
990 // Count in the overflow trap count on overflow
991 if (cnt == (uint)-1) {
992 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
993 }
994 break;
995 } else if (reason_str == nullptr) {
996 uint c = mdo->trap_count(reason);
997 if (c == (uint)-1) {
998 c = mdo->trap_count_limit();
999 if (!overflow) {
1000 // Count overflow trap count just once
1001 overflow = true;
1002 c += mdo->overflow_trap_count();
1003 }
1004 }
1005 cnt += c;
1006 }
1007 }
1008 }
1009 return cnt;
1010 WB_END
1011
1012 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1013 if (reason_obj == nullptr && action_obj == nullptr) {
1014 return Deoptimization::total_deoptimization_count();
1015 }
1016 ResourceMark rm(THREAD);
1017 const char *reason_str = (reason_obj == nullptr) ?
1018 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1019 const char *action_str = (action_obj == nullptr) ?
1020 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1021
1022 return Deoptimization::deoptimization_count(reason_str, action_str);
1023 WB_END
1024
1025 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1026 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1027 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1028 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1029 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1030 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1031 WB_END
1032
1033 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1034 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1035 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1036 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1037 bool result = mh->dont_inline();
1038 mh->set_dont_inline(value == JNI_TRUE);
1039 return result;
1040 WB_END
1041
1042 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1043 if (comp_level == CompLevel_any) {
1044 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1045 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1046 } else {
1047 return CompileBroker::queue_size(comp_level);
1048 }
1049 WB_END
1050
1051 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1052 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1053 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1054 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1055 bool result = mh->force_inline();
1056 mh->set_force_inline(value == JNI_TRUE);
1057 return result;
1058 WB_END
1059
1060 #ifdef LINUX
1061 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1062 const char* proc_self_cgroup,
1063 const char* proc_self_mountinfo,
1064 u1* cg_flags) {
1065 CgroupInfo cg_infos[CG_INFO_LENGTH];
1066 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1067 proc_self_cgroup,
1068 proc_self_mountinfo, cg_flags);
1069 }
1070 #endif
1071
1072 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1073 // Screen for unavailable/bad comp level or null method
1074 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1075 if (method == nullptr) {
1076 tty->print_cr("WB error: request to compile null method");
1077 return false;
1078 }
1079 if (comp_level > CompilationPolicy::highest_compile_level()) {
1080 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1081 return false;
1082 }
1083 if (comp == nullptr) {
1084 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1085 return false;
1086 }
1087
1088 // Check if compilation is blocking
1089 methodHandle mh(THREAD, method);
1090 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1091 bool is_blocking = !directive->BackgroundCompilationOption;
1092 DirectivesStack::release(directive);
1093
1094 // Compile method and check result
1095 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1096 MutexLocker mu(THREAD, Compile_lock);
1097 bool is_queued = mh->queued_for_compilation();
1098 if ((!is_blocking && is_queued) || nm != nullptr) {
1099 return true;
1100 }
1101 // Check code again because compilation may be finished before Compile_lock is acquired.
1102 if (bci == InvocationEntryBci) {
1103 CompiledMethod* code = mh->code();
1104 if (code != nullptr && code->as_nmethod_or_null() != nullptr) {
1105 return true;
1106 }
1107 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1108 return true;
1109 }
1110 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1111 mh->print_short_name(tty);
1112 tty->cr();
1113 if (is_blocking && is_queued) {
1114 tty->print_cr("WB error: blocking compilation is still in queue!");
1115 }
1116 return false;
1117 }
1118
1119 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1120 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1121 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1122 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1123 WB_END
1124
1125 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1126 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1127 Method* clinit = ik->class_initializer();
1128 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1129 return false;
1130 }
1131 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1132 WB_END
1133
1134 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1135 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1136 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1137
1138 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1139 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1140 bool result = directive->PrintAssemblyOption;
1141 DirectivesStack::release(directive);
1142
1143 return result;
1144 WB_END
1145
1146 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1147 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1148 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1149
1150 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1151
1152 ResourceMark rm(THREAD);
1153 const char* error_msg = nullptr;
1154 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1155 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1156
1157 if (m == nullptr) {
1158 assert(error_msg != nullptr, "Always have an error message");
1159 tty->print_cr("Got error: %s", error_msg);
1160 return -1; // Pattern failed
1161 }
1162
1163 // Pattern works - now check if it matches
1164 int result;
1165 if (m->match(mh, InlineMatcher::force_inline)) {
1166 result = 2; // Force inline match
1167 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1168 result = 1; // Dont inline match
1169 } else {
1170 result = 0; // No match
1171 }
1172 delete m;
1173 return result;
1174 WB_END
1175
1176 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1177 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1178 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1179
1180 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1181
1182 ResourceMark rm;
1183 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1184
1185 const char* error_msg = nullptr;
1186
1187 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1188 if (m == nullptr) {
1189 assert(error_msg != nullptr, "Must have error_msg");
1190 tty->print_cr("Got error: %s", error_msg);
1191 return -1;
1192 }
1193
1194 // Pattern works - now check if it matches
1195 int result = m->matches(mh);
1196 delete m;
1197 assert(result == 0 || result == 1, "Result out of range");
1198 return result;
1199 WB_END
1200
1201 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1202 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1203 CHECK_JNI_EXCEPTION(env);
1204 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1205
1206 MethodData* mdo = mh->method_data();
1207 if (mdo == nullptr) {
1208 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1209 mdo = mh->method_data();
1210 }
1211 mdo->init();
1212 InvocationCounter* icnt = mdo->invocation_counter();
1213 InvocationCounter* bcnt = mdo->backedge_counter();
1214 // set i-counter according to CompilationPolicy::is_method_profiled
1215 icnt->set(Tier4MinInvocationThreshold);
1216 bcnt->set(Tier4CompileThreshold);
1217 WB_END
1218
1219 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1220 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1221 CHECK_JNI_EXCEPTION(env);
1222 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1223 MutexLocker mu(THREAD, Compile_lock);
1224 MethodData* mdo = mh->method_data();
1225 MethodCounters* mcs = mh->method_counters();
1226
1227 if (mdo != nullptr) {
1228 mdo->init();
1229 ResourceMark rm(THREAD);
1230 int arg_count = mdo->method()->size_of_parameters();
1231 for (int i = 0; i < arg_count; i++) {
1232 mdo->set_arg_modified(i, 0);
1233 }
1234 mdo->clean_method_data(/*always_clean*/true);
1235 }
1236
1237 mh->clear_is_not_c1_compilable();
1238 mh->clear_is_not_c2_compilable();
1239 mh->clear_is_not_c2_osr_compilable();
1240 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1241 if (mcs != nullptr) {
1242 mcs->clear_counters();
1243 }
1244 WB_END
1245
1246 template <typename T, int type_enum>
1247 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1248 if (name == nullptr) {
1249 return false;
1250 }
1251 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1252 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1253 CHECK_JNI_EXCEPTION_(env, false);
1254 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1255 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1256 env->ReleaseStringUTFChars(name, flag_name);
1257 return (result == JVMFlag::SUCCESS);
1258 }
1259
1260 template <typename T, int type_enum>
1261 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1262 if (name == nullptr) {
1263 return false;
1264 }
1265 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1266 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1267 CHECK_JNI_EXCEPTION_(env, false);
1268 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1269 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1270 env->ReleaseStringUTFChars(name, flag_name);
1271 return (result == JVMFlag::SUCCESS);
1272 }
1273
1274 template <typename T>
1275 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1276 ResourceMark rm(thread);
1277 jclass clazz = env->FindClass(name->as_C_string());
1278 CHECK_JNI_EXCEPTION_(env, nullptr);
1279 jmethodID methodID = env->GetStaticMethodID(clazz,
1280 vmSymbols::valueOf_name()->as_C_string(),
1281 sig->as_C_string());
1282 CHECK_JNI_EXCEPTION_(env, nullptr);
1283 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1284 CHECK_JNI_EXCEPTION_(env, nullptr);
1285 return result;
1286 }
1287
1288 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1289 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1290 }
1291 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1292 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1293 }
1294 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1295 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1296 }
1297 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1298 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1299 }*/
1300 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1301 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1302 }
1303
1304 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1305 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1306 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1307 CHECK_JNI_EXCEPTION_(env, nullptr);
1308 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1309 env->ReleaseStringUTFChars(name, flag_name);
1310 return result;
1311 }
1312
1313 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1314 const JVMFlag* flag = getVMFlag(thread, env, name);
1315 return (flag != nullptr) && flag->is_constant_in_binary();
1316 WB_END
1317
1318 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1319 const JVMFlag* flag = getVMFlag(thread, env, name);
1320 return (flag != nullptr) && flag->is_default();
1321 WB_END
1322
1323 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1324 const JVMFlag* flag = getVMFlag(thread, env, name);
1325 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1326 WB_END
1327
1328 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1329 bool result;
1330 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1331 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1332 return booleanBox(thread, env, result);
1333 }
1334 return nullptr;
1335 WB_END
1336
1337 template <typename T, int type_enum>
1338 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1339 T result;
1340 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1341 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1342 return longBox(thread, env, result);
1343 }
1344 return nullptr;
1345 }
1346
1347 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1348 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1349 WB_END
1350
1351 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1352 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1353 WB_END
1354
1355 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1356 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1357 WB_END
1358
1359 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1360 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1361 WB_END
1362
1363 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1364 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1365 WB_END
1366
1367 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1368 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1369 WB_END
1370
1371 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1372 double result;
1373 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1374 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1375 return doubleBox(thread, env, result);
1376 }
1377 return nullptr;
1378 WB_END
1379
1380 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1381 ccstr ccstrResult;
1382 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1383 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1384 jstring result = env->NewStringUTF(ccstrResult);
1385 CHECK_JNI_EXCEPTION_(env, nullptr);
1386 return result;
1387 }
1388 return nullptr;
1389 WB_END
1390
1391 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1392 bool result = value == JNI_TRUE ? true : false;
1393 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1394 WB_END
1395
1396 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1397 int result = checked_cast<int>(value);
1398 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1399 WB_END
1400
1401 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1402 uint result = checked_cast<uint>(value);
1403 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1404 WB_END
1405
1406 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1407 intx result = value;
1408 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1409 WB_END
1410
1411 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1412 uintx result = value;
1413 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1414 WB_END
1415
1416 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1417 uint64_t result = value;
1418 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1419 WB_END
1420
1421 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1422 size_t result = value;
1423 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1424 WB_END
1425
1426 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1427 double result = value;
1428 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1429 WB_END
1430
1431 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1432 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1433 const char* ccstrValue;
1434 if (value == nullptr) {
1435 ccstrValue = nullptr;
1436 }
1437 else {
1438 ccstrValue = env->GetStringUTFChars(value, nullptr);
1439 CHECK_JNI_EXCEPTION(env);
1440 }
1441 {
1442 ccstr param = ccstrValue;
1443 ThreadInVMfromNative ttvfn(thread); // back to VM
1444 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1445 assert(param == nullptr, "old value is freed automatically and not returned");
1446 }
1447 }
1448 if (value != nullptr) {
1449 env->ReleaseStringUTFChars(value, ccstrValue);
1450 }
1451 WB_END
1452
1453 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1454 WhiteBox::compilation_locked = true;
1455 WB_END
1456
1457 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1458 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1459 WhiteBox::compilation_locked = false;
1460 mo.notify_all();
1461 WB_END
1462
1463 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1464 ResourceMark rm(THREAD);
1465 int len;
1466 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1467 return (StringTable::lookup(name, len) != nullptr);
1468 WB_END
1469
1470 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1471 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1472 Universe::heap()->collect(GCCause::_wb_full_gc);
1473 #if INCLUDE_G1GC || INCLUDE_SERIALGC
1474 if (UseG1GC || UseSerialGC) {
1475 // Needs to be cleared explicitly for G1 and Serial GC.
1476 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1477 }
1478 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC
1479 WB_END
1480
1481 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1482 Universe::heap()->collect(GCCause::_wb_young_gc);
1483 WB_END
1484
1485 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1486 // static+volatile in order to force the read to happen
1487 // (not be eliminated by the compiler)
1488 static char c;
1489 static volatile char* p;
1490
1491 p = os::reserve_memory(os::vm_allocation_granularity());
1492 if (p == nullptr) {
1493 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1494 }
1495
1496 c = *p;
1497 WB_END
1498
1499 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1500 const char* features = VM_Version::features_string();
1501 ThreadToNativeFromVM ttn(thread);
1502 jstring features_string = env->NewStringUTF(features);
1503
1504 CHECK_JNI_EXCEPTION_(env, nullptr);
1505
1506 return features_string;
1507 WB_END
1508
1509 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1510 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1511 return CodeCache::get_code_heap(code)->code_blob_type();
1512 }
1513
1514 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1515 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1516 return CodeCache::get_code_heap(blob_type);
1517 }
1518
1519 struct CodeBlobStub {
1520 CodeBlobStub(const CodeBlob* blob) :
1521 name(os::strdup(blob->name())),
1522 size(blob->size()),
1523 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1524 address((jlong) blob) { }
1525 ~CodeBlobStub() { os::free((void*) name); }
1526 const char* const name;
1527 const jint size;
1528 const jint blob_type;
1529 const jlong address;
1530 };
1531
1532 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1533 ResourceMark rm;
1534 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1535 CHECK_JNI_EXCEPTION_(env, nullptr);
1536 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1537
1538 jstring name = env->NewStringUTF(cb->name);
1539 CHECK_JNI_EXCEPTION_(env, nullptr);
1540 env->SetObjectArrayElement(result, 0, name);
1541
1542 jobject obj = integerBox(thread, env, cb->size);
1543 CHECK_JNI_EXCEPTION_(env, nullptr);
1544 env->SetObjectArrayElement(result, 1, obj);
1545
1546 obj = integerBox(thread, env, cb->blob_type);
1547 CHECK_JNI_EXCEPTION_(env, nullptr);
1548 env->SetObjectArrayElement(result, 2, obj);
1549
1550 obj = longBox(thread, env, cb->address);
1551 CHECK_JNI_EXCEPTION_(env, nullptr);
1552 env->SetObjectArrayElement(result, 3, obj);
1553
1554 return result;
1555 }
1556
1557 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1558 ResourceMark rm(THREAD);
1559 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1560 CHECK_JNI_EXCEPTION_(env, nullptr);
1561 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1562 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1563 jobjectArray result = nullptr;
1564 if (code == nullptr) {
1565 return result;
1566 }
1567 int comp_level = code->comp_level();
1568 int insts_size = code->insts_size();
1569
1570 ThreadToNativeFromVM ttn(thread);
1571 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1572 CHECK_JNI_EXCEPTION_(env, nullptr);
1573 result = env->NewObjectArray(5, clazz, nullptr);
1574 if (result == nullptr) {
1575 return result;
1576 }
1577
1578 CodeBlobStub stub(code);
1579 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1580 CHECK_JNI_EXCEPTION_(env, nullptr);
1581 env->SetObjectArrayElement(result, 0, codeBlob);
1582
1583 jobject level = integerBox(thread, env, comp_level);
1584 CHECK_JNI_EXCEPTION_(env, nullptr);
1585 env->SetObjectArrayElement(result, 1, level);
1586
1587 jbyteArray insts = env->NewByteArray(insts_size);
1588 CHECK_JNI_EXCEPTION_(env, nullptr);
1589 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1590 env->SetObjectArrayElement(result, 2, insts);
1591
1592 jobject id = integerBox(thread, env, code->compile_id());
1593 CHECK_JNI_EXCEPTION_(env, nullptr);
1594 env->SetObjectArrayElement(result, 3, id);
1595
1596 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1597 CHECK_JNI_EXCEPTION_(env, nullptr);
1598 env->SetObjectArrayElement(result, 4, entry_point);
1599
1600 return result;
1601 WB_END
1602
1603 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1604 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1605 BufferBlob* blob;
1606 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1607 if (full_size < size) {
1608 full_size += align_up(size - full_size, oopSize);
1609 }
1610 {
1611 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1612 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1613 if (blob != nullptr) {
1614 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1615 }
1616 }
1617 // Track memory usage statistic after releasing CodeCache_lock
1618 MemoryService::track_code_cache_memory_usage();
1619 return blob;
1620 }
1621
1622 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1623 if (size < 0) {
1624 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1625 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1626 }
1627 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1628 WB_END
1629
1630 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1631 if (addr == 0) {
1632 return;
1633 }
1634 BufferBlob::free((BufferBlob*) addr);
1635 WB_END
1636
1637 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1638 ResourceMark rm;
1639 GrowableArray<CodeBlobStub*> blobs;
1640 {
1641 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1642 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1643 if (heap == nullptr) {
1644 return nullptr;
1645 }
1646 for (CodeBlob* cb = (CodeBlob*) heap->first();
1647 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1648 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1649 new (stub) CodeBlobStub(cb);
1650 blobs.append(stub);
1651 }
1652 }
1653 ThreadToNativeFromVM ttn(thread);
1654 jobjectArray result = nullptr;
1655 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1656 CHECK_JNI_EXCEPTION_(env, nullptr);
1657 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1658 CHECK_JNI_EXCEPTION_(env, nullptr);
1659 if (result == nullptr) {
1660 return result;
1661 }
1662 int i = 0;
1663 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1664 it != blobs.end(); ++it) {
1665 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1666 CHECK_JNI_EXCEPTION_(env, nullptr);
1667 env->SetObjectArrayElement(result, i, obj);
1668 CHECK_JNI_EXCEPTION_(env, nullptr);
1669 ++i;
1670 }
1671 return result;
1672 WB_END
1673
1674 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1675 return CompileBroker::get_compilation_activity_mode();
1676 WB_END
1677
1678 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1679 if (addr == 0) {
1680 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1681 "WB_GetCodeBlob: addr is null");
1682 }
1683 ThreadToNativeFromVM ttn(thread);
1684 CodeBlobStub stub((CodeBlob*) addr);
1685 return codeBlob2objectArray(thread, env, &stub);
1686 WB_END
1687
1688 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1689 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1690 CHECK_JNI_EXCEPTION_(env, 0);
1691 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1692 return (jlong) mh->method_data();
1693 WB_END
1694
1695 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1696 return (jlong) thread->stack_size();
1697 WB_END
1698
1699 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1700 return (jlong) thread->stack_overflow_state()->stack_available(
1701 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1702 WB_END
1703
1704
1705 int WhiteBox::array_bytes_to_length(size_t bytes) {
1706 return Array<u1>::bytes_to_length(bytes);
1707 }
1708
1709 ///////////////
1710 // MetaspaceTestContext and MetaspaceTestArena
1711 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1712 metaspace::MetaspaceTestContext* context =
1713 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1714 return (jlong)p2i(context);
1715 WB_END
1716
1717 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1718 delete (metaspace::MetaspaceTestContext*) context;
1719 WB_END
1720
1721 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1722 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1723 context0->purge_area();
1724 WB_END
1725
1726 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1727 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1728 context0->print_on(tty);
1729 WB_END
1730
1731 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1732 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1733 return context0->committed_words();
1734 WB_END
1735
1736 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1737 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1738 return context0->used_words();
1739 WB_END
1740
1741 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1742 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1743 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1744 return (jlong)p2i(context0->create_arena(type));
1745 WB_END
1746
1747 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1748 delete (metaspace::MetaspaceTestArena*) arena;
1749 WB_END
1750
1751 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1752 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1753 MetaWord* p = arena0->allocate((size_t) word_size);
1754 return (jlong)p2i(p);
1755 WB_END
1756
1757 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1758 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1759 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1760 WB_END
1761
1762 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1763 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1764 WB_END
1765
1766 //////////////
1767
1768 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1769 if (size < 0) {
1770 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1771 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1772 }
1773
1774 oop class_loader_oop = JNIHandles::resolve(class_loader);
1775 ClassLoaderData* cld = class_loader_oop != nullptr
1776 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1777 : ClassLoaderData::the_null_class_loader_data();
1778
1779 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1780
1781 return (jlong)(uintptr_t)metadata;
1782 WB_END
1783
1784 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1785 jstring version, jstring location, jobjectArray packages))
1786 Handle h_module (THREAD, JNIHandles::resolve(module));
1787 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1788 WB_END
1789
1790 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1791 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1792 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1793 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1794 WB_END
1795
1796 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1797 Handle h_module (THREAD, JNIHandles::resolve(module));
1798 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1799 WB_END
1800
1801 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1802 Handle h_module (THREAD, JNIHandles::resolve(module));
1803 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1804 WB_END
1805
1806 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1807 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1808 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1809 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1810 WB_END
1811
1812 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1813 if (inc < 0) {
1814 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1815 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1816 }
1817
1818 jlong max_size_t = (jlong) ((size_t) -1);
1819 if (inc > max_size_t) {
1820 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1821 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1822 }
1823
1824 size_t new_cap_until_GC = 0;
1825 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1826 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1827 if (!success) {
1828 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1829 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1830 "due to contention with another thread");
1831 }
1832 return (jlong) new_cap_until_GC;
1833 WB_END
1834
1835 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1836 return (jlong) MetaspaceGC::capacity_until_GC();
1837 WB_END
1838
1839 // The function is only valid when CDS is available.
1840 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1841 #if INCLUDE_CDS
1842 return (jlong)MetaspaceShared::core_region_alignment();
1843 #else
1844 ShouldNotReachHere();
1845 return 0L;
1846 #endif
1847 WB_END
1848
1849 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1850 oop obj_oop = JNIHandles::resolve(obj);
1851 return (jboolean) obj_oop->mark().has_monitor();
1852 WB_END
1853
1854 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1855 return (jint) LockStack::CAPACITY;
1856 WB_END
1857
1858 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1859 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1860 WB_END
1861
1862 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1863 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1864 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1865 WB_END
1866
1867 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1868 VM_ForceSafepoint force_safepoint_op;
1869 VMThread::execute(&force_safepoint_op);
1870 WB_END
1871
1872 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1873 nullStream dev_null;
1874 ClassLoaderStatsVMOperation force_op(&dev_null);
1875 VMThread::execute(&force_op);
1876 WB_END
1877
1878 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1879 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1880 return (jlong) ik->constants();
1881 WB_END
1882
1883 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1884 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1885 objArrayOop resolved_refs= ik->constants()->resolved_references();
1886 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1887 WB_END
1888
1889 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1890 return ConstantPool::encode_invokedynamic_index(index);
1891 WB_END
1892
1893 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
1894 oop aoop = JNIHandles::resolve(thing);
1895 if (!aoop->is_instance()) {
1896 return nullptr;
1897 }
1898 instanceHandle ih(THREAD, (instanceOop) aoop);
1899 InstanceKlass* klass = InstanceKlass::cast(ih->klass());
1900 if (klass->nonstatic_oop_map_count() == 0) {
1901 return nullptr;
1902 }
1903 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
1904 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
1905 int oop_count = 0;
1906 while (map < end) {
1907 oop_count += map->count();
1908 map++;
1909 }
1910
1911 objArrayHandle result_array =
1912 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL);
1913 map = klass->start_of_nonstatic_oop_maps();
1914 int index = 0;
1915 while (map < end) {
1916 int offset = map->offset();
1917 for (unsigned int j = 0; j < map->count(); j++) {
1918 result_array->obj_at_put(index++, ih->obj_field(offset));
1919 offset += heapOopSize;
1920 }
1921 map++;
1922 }
1923 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1924 WB_END
1925
1926 class CollectOops : public BasicOopIterateClosure {
1927 public:
1928 GrowableArray<Handle>* array;
1929
1930 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
1931 objArrayHandle result_array =
1932 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL);
1933 for (int i = 0 ; i < array->length(); i++) {
1934 result_array->obj_at_put(i, array->at(i)());
1935 }
1936 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1937 }
1938
1939 void add_oop(oop o) {
1940 Handle oh = Handle(Thread::current(), o);
1941 // Value might be oop, but JLS can't see as Object, just iterate through it...
1942 if (oh != nullptr && oh->is_inline_type()) {
1943 oh->oop_iterate(this);
1944 } else {
1945 array->append(oh);
1946 }
1947 }
1948
1949 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); }
1950 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); }
1951 };
1952
1953
1954 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
1955 ResourceMark rm(thread);
1956 Handle objh(thread, JNIHandles::resolve(thing));
1957 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1958 CollectOops collectOops;
1959 collectOops.array = array;
1960 objh->oop_iterate(&collectOops);
1961 return collectOops.create_jni_result(env, THREAD);
1962 WB_END
1963
1964 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
1965 ResourceMark rm(THREAD);
1966 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1967 CollectOops collectOops;
1968 collectOops.array = array;
1969 StackFrameStream sfs(thread, false /* update */, true /* process_frames */);
1970 while (depth > 0) { // Skip the native WB API frame
1971 sfs.next();
1972 frame* f = sfs.current();
1973 f->oops_do(&collectOops, nullptr, sfs.register_map());
1974 depth--;
1975 }
1976 return collectOops.create_jni_result(env, THREAD);
1977 WB_END
1978
1979
1980 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1981 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1982 ConstantPool* cp = ik->constants();
1983 if (cp->cache() == nullptr) {
1984 return -1;
1985 }
1986 return cp->resolved_field_entries_length();
1987 WB_END
1988
1989 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1990 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1991 ConstantPool* cp = ik->constants();
1992 if (cp->cache() == nullptr) {
1993 return -1;
1994 }
1995 return cp->resolved_field_entry_at(index)->constant_pool_index();
1996 WB_END
1997
1998 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1999 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
2000 ConstantPool* cp = ik->constants();
2001 if (cp->cache() == nullptr) {
2002 return -1;
2003 }
2004 return cp->resolved_method_entries_length();
2005 WB_END
2006
2007 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2008 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
2009 ConstantPool* cp = ik->constants();
2010 if (cp->cache() == nullptr) {
2011 return -1;
2012 }
2013 return cp->resolved_method_entry_at(index)->constant_pool_index();
2014 WB_END
2015
2016 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
2017 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
2018 ConstantPool* cp = ik->constants();
2019 if (cp->cache() == nullptr) {
2020 return -1;
2021 }
2022 return cp->resolved_indy_entries_length();
2023 WB_END
2024
2025 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2026 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
2027 ConstantPool* cp = ik->constants();
2028 if (cp->cache() == nullptr) {
2029 return -1;
2030 }
2031 return cp->resolved_indy_entry_at(index)->constant_pool_index();
2032 WB_END
2033
2034 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
2035 ThreadToNativeFromVM ttnfv(thread);
2036 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2037 ResourceMark rm;
2038 stringStream st;
2039 {
2040 ThreadInVMfromNative ttvfn(thread); // back to VM
2041 ClassPrinter::print_classes(c, flags, &st);
2042 }
2043 jstring result = env->NewStringUTF(st.freeze());
2044 CHECK_JNI_EXCEPTION_(env, nullptr);
2045 return result;
2046 WB_END
2047
2048 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
2049 ThreadToNativeFromVM ttnfv(thread);
2050 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2051 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
2052 ResourceMark rm;
2053 stringStream st;
2054 {
2055 ThreadInVMfromNative ttvfn(thread); // back to VM
2056 ClassPrinter::print_methods(c, m, flags, &st);
2057 }
2058 jstring result = env->NewStringUTF(st.freeze());
2059 CHECK_JNI_EXCEPTION_(env, nullptr);
2060 return result;
2061 WB_END
2062
2063 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
2064 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
2065 VMThread::execute(&clear_ics);
2066 WB_END
2067
2068 template <typename T>
2069 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
2070 assert(value != nullptr, "sanity");
2071 if (method == nullptr || name == nullptr) {
2072 return false;
2073 }
2074 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2075 CHECK_JNI_EXCEPTION_(env, false);
2076 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2077 // can't be in VM when we call JNI
2078 ThreadToNativeFromVM ttnfv(thread);
2079 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2080 CHECK_JNI_EXCEPTION_(env, false);
2081 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
2082 env->ReleaseStringUTFChars(name, flag_name);
2083 if (option == CompileCommand::Unknown) {
2084 return false;
2085 }
2086 if (!CompilerOracle::option_matches_type(option, *value)) {
2087 return false;
2088 }
2089 return CompilerOracle::has_option_value(mh, option, *value);
2090 }
2091
2092 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2093 bool result;
2094 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2095 // can't be in VM when we call JNI
2096 ThreadToNativeFromVM ttnfv(thread);
2097 return booleanBox(thread, env, result);
2098 }
2099 return nullptr;
2100 WB_END
2101
2102 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2103 intx result;
2104 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2105 // can't be in VM when we call JNI
2106 ThreadToNativeFromVM ttnfv(thread);
2107 return longBox(thread, env, result);
2108 }
2109 return nullptr;
2110 WB_END
2111
2112 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2113 uintx result;
2114 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2115 // can't be in VM when we call JNI
2116 ThreadToNativeFromVM ttnfv(thread);
2117 return longBox(thread, env, result);
2118 }
2119 return nullptr;
2120 WB_END
2121
2122 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2123 double result;
2124 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2125 // can't be in VM when we call JNI
2126 ThreadToNativeFromVM ttnfv(thread);
2127 return doubleBox(thread, env, result);
2128 }
2129 return nullptr;
2130 WB_END
2131
2132 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2133 ccstr ccstrResult;
2134 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2135 // can't be in VM when we call JNI
2136 ThreadToNativeFromVM ttnfv(thread);
2137 jstring result = env->NewStringUTF(ccstrResult);
2138 CHECK_JNI_EXCEPTION_(env, nullptr);
2139 return result;
2140 }
2141 return nullptr;
2142 WB_END
2143
2144 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2145 const char* p = CDSConfig::default_archive_path();
2146 ThreadToNativeFromVM ttn(thread);
2147 jstring path_string = env->NewStringUTF(p);
2148
2149 CHECK_JNI_EXCEPTION_(env, nullptr);
2150
2151 return path_string;
2152 WB_END
2153
2154 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2155 return UseSharedSpaces;
2156 WB_END
2157
2158 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2159 #if INCLUDE_CDS
2160 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2161 #else
2162 ShouldNotReachHere();
2163 return (jint)-1;
2164 #endif
2165 WB_END
2166
2167 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2168 #if INCLUDE_CDS
2169 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2170 #else
2171 ShouldNotReachHere();
2172 return (jint)-1;
2173 #endif
2174 WB_END
2175
2176 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2177 return FileMapInfo::memory_mapping_failed();
2178 WB_END
2179
2180 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2181 ResourceMark rm(THREAD);
2182 oop str_oop = JNIHandles::resolve(str);
2183 int length;
2184 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2185 return StringTable::lookup_shared(chars, length) == str_oop;
2186 WB_END
2187
2188 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2189 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2190 WB_END
2191
2192 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2193 return ArchiveHeapLoader::is_mapped();
2194 WB_END
2195
2196 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2197 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2198 if (!k->is_instance_klass()) {
2199 return;
2200 }
2201 InstanceKlass *ik = InstanceKlass::cast(k);
2202 ik->link_class(THREAD); // may throw verification error
2203 WB_END
2204
2205 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2206 return ArchiveHeapLoader::is_mapped();
2207 WB_END
2208
2209 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2210 #if INCLUDE_CDS
2211 return true;
2212 #else
2213 return false;
2214 #endif // INCLUDE_CDS
2215 WB_END
2216
2217 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2218 #if COMPILER2_OR_JVMCI
2219 return true;
2220 #else
2221 return false;
2222 #endif
2223 WB_END
2224
2225 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2226 #if INCLUDE_JVMCI
2227 return JVMCIGlobals::gc_supports_jvmci();
2228 #else
2229 return false;
2230 #endif
2231 WB_END
2232
2233 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2234 return HeapShared::can_write();
2235 WB_END
2236
2237
2238 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2239 #if INCLUDE_JFR
2240 return true;
2241 #else
2242 return false;
2243 #endif // INCLUDE_JFR
2244 WB_END
2245
2246 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2247 #if defined(DTRACE_ENABLED)
2248 return true;
2249 #else
2250 return false;
2251 #endif // DTRACE_ENABLED
2252 WB_END
2253
2254 #if INCLUDE_CDS
2255
2256 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2257 ResourceMark rm;
2258 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2259 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2260 return result;
2261 WB_END
2262
2263 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2264 ResourceMark rm;
2265 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2266 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2267 return result;
2268 WB_END
2269
2270 #endif // INCLUDE_CDS
2271
2272 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2273 class ReadMonitorsClosure : public HandshakeClosure {
2274 jboolean _executed;
2275
2276 void do_thread(Thread* th) {
2277 JavaThread* jt = JavaThread::cast(th);
2278 ResourceMark rm;
2279
2280 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2281
2282 if (!jt->has_last_Java_frame()) {
2283 return;
2284 }
2285 RegisterMap rmap(jt,
2286 RegisterMap::UpdateMap::include,
2287 RegisterMap::ProcessFrames::include,
2288 RegisterMap::WalkContinuation::skip);
2289 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2290 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2291 if (monitors != nullptr) {
2292 int len = monitors->length();
2293 // Walk monitors youngest to oldest
2294 for (int i = len - 1; i >= 0; i--) {
2295 MonitorInfo* mon_info = monitors->at(i);
2296 if (mon_info->eliminated()) continue;
2297 oop owner = mon_info->owner();
2298 if (owner != nullptr) {
2299 info->append(mon_info);
2300 }
2301 }
2302 }
2303 }
2304 _executed = true;
2305 }
2306
2307 public:
2308 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2309 jboolean executed() const { return _executed; }
2310 };
2311
2312 ReadMonitorsClosure rmc;
2313 if (thread_handle != nullptr) {
2314 ThreadsListHandle tlh;
2315 JavaThread* target = nullptr;
2316 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2317 if (is_alive) {
2318 Handshake::execute(&rmc, &tlh, target);
2319 }
2320 }
2321 return rmc.executed();
2322 WB_END
2323
2324 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2325 class TraceSelfClosure : public HandshakeClosure {
2326 jint _num_threads_completed;
2327
2328 void do_thread(Thread* th) {
2329 JavaThread* jt = JavaThread::cast(th);
2330 ResourceMark rm;
2331
2332 jt->print_on(tty);
2333 jt->print_stack_on(tty);
2334 tty->cr();
2335 Atomic::inc(&_num_threads_completed);
2336 }
2337
2338 public:
2339 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2340
2341 jint num_threads_completed() const { return _num_threads_completed; }
2342 };
2343 TraceSelfClosure tsc(Thread::current());
2344
2345 if (all_threads) {
2346 Handshake::execute(&tsc);
2347 } else if (thread_handle != nullptr) {
2348 ThreadsListHandle tlh;
2349 JavaThread* target = nullptr;
2350 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2351 if (is_alive) {
2352 Handshake::execute(&tsc, &tlh, target);
2353 }
2354 }
2355 return tsc.num_threads_completed();
2356 WB_END
2357
2358 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2359 class TraceSelfClosure : public AsyncHandshakeClosure {
2360 JavaThread* _self;
2361 void do_thread(Thread* th) {
2362 assert(th->is_Java_thread(), "sanity");
2363 // AsynchHandshake handshakes are only executed by target.
2364 assert(_self == th, "Must be");
2365 assert(Thread::current() == th, "Must be");
2366 JavaThread* jt = JavaThread::cast(th);
2367 ResourceMark rm;
2368 jt->print_on(tty);
2369 jt->print_stack_on(tty);
2370 tty->cr();
2371 }
2372
2373 public:
2374 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2375 };
2376 if (thread_handle != nullptr) {
2377 ThreadsListHandle tlh;
2378 JavaThread* target = nullptr;
2379 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2380 if (is_alive) {
2381 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2382 Handshake::execute(tsc, target);
2383 }
2384 }
2385 WB_END
2386
2387 static volatile int _emulated_lock = 0;
2388
2389 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2390 JavaThread* self = JavaThread::current();
2391
2392 {
2393 // Before trying to acquire the lock transition into a safepoint safe state.
2394 // Otherwise if either suspender or suspendee blocks for a safepoint
2395 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2396 // the lock without allowing the safepoint to progress.
2397 ThreadBlockInVM tbivm(self);
2398
2399 // We will deadlock here if we are 'suspender' and 'suspendee'
2400 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2401 // at the right place.
2402 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2403 assert(_emulated_lock == 1, "Must be locked");
2404
2405 // Sleep much longer in suspendee to force situation where
2406 // 'suspender' is waiting above to acquire lock.
2407 os::naked_short_sleep(suspender ? 1 : 10);
2408 }
2409 Atomic::store(&_emulated_lock, 0);
2410 WB_END
2411
2412 // Some convenience methods to deal with objects from java
2413 int WhiteBox::offset_for_field(const char* field_name, oop object,
2414 Symbol* signature_symbol) {
2415 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2416
2417 //Get the class of our object
2418 Klass* arg_klass = object->klass();
2419 //Turn it into an instance-klass
2420 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2421
2422 //Create symbols to look for in the class
2423 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2424
2425 //To be filled in with an offset of the field we're looking for
2426 fieldDescriptor fd;
2427
2428 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2429 if (res == nullptr) {
2430 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2431 name_symbol->as_C_string());
2432 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2433 }
2434
2435 //fetch the field at the offset we've found
2436 int dest_offset = fd.offset();
2437
2438 return dest_offset;
2439 }
2440
2441
2442 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2443 int offset = offset_for_field(field_name, object,
2444 vmSymbols::string_signature());
2445 oop string = object->obj_field(offset);
2446 if (string == nullptr) {
2447 return nullptr;
2448 }
2449 const char* ret = java_lang_String::as_utf8_string(string);
2450 return ret;
2451 }
2452
2453 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2454 int offset =
2455 offset_for_field(field_name, object, vmSymbols::bool_signature());
2456 bool ret = (object->bool_field(offset) == JNI_TRUE);
2457 return ret;
2458 }
2459
2460 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2461 ResourceMark rm;
2462 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2463 const char* klass_name = klass->external_name();
2464
2465 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2466
2467 // one by one registration natives for exception catching
2468 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2469 CHECK_JNI_EXCEPTION(env);
2470 for (int i = 0, n = method_count; i < n; ++i) {
2471 // Skip dummy entries
2472 if (method_array[i].fnPtr == nullptr) continue;
2473 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2474 jthrowable throwable_obj = env->ExceptionOccurred();
2475 if (throwable_obj != nullptr) {
2476 env->ExceptionClear();
2477 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2478 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2479 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2480 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2481 klass_name, method_array[i].name, method_array[i].signature);
2482 }
2483 } else {
2484 // Registration failed unexpectedly.
2485 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2486 klass_name, method_array[i].name, method_array[i].signature);
2487 env->UnregisterNatives(wbclass);
2488 break;
2489 }
2490 }
2491 }
2492 }
2493
2494 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2495 // can't be in VM when we call JNI
2496 ThreadToNativeFromVM ttnfv(thread);
2497 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2498 CHECK_JNI_EXCEPTION_(env, 0);
2499 int ret;
2500 {
2501 ThreadInVMfromNative ttvfn(thread); // back to VM
2502 ret = DirectivesParser::parse_string(dir, tty);
2503 }
2504 env->ReleaseStringUTFChars(compDirect, dir);
2505 // -1 for error parsing directive. Return 0 as number of directives added.
2506 if (ret == -1) {
2507 ret = 0;
2508 }
2509 return (jint) ret;
2510 WB_END
2511
2512 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2513 DirectivesStack::pop(count);
2514 WB_END
2515
2516 // Checks that the library libfile has the noexecstack bit set.
2517 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2518 jboolean ret = false;
2519 #ifdef LINUX
2520 // Can't be in VM when we call JNI.
2521 ThreadToNativeFromVM ttnfv(thread);
2522 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2523 CHECK_JNI_EXCEPTION_(env, 0);
2524 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2525 env->ReleaseStringUTFChars(libfile, lf);
2526 #endif
2527 return ret;
2528 WB_END
2529
2530 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2531 LINUX_ONLY(return OSContainer::is_containerized();)
2532 return false;
2533 WB_END
2534
2535 // Physical memory of the host machine (including containers)
2536 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2537 LINUX_ONLY(return os::Linux::physical_memory();)
2538 return os::physical_memory();
2539 WB_END
2540
2541 // Physical swap of the host machine (including containers), Linux only.
2542 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2543 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2544 return -1; // Not used/implemented on other platforms
2545 WB_END
2546
2547 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2548 jobject o,
2549 jstring proc_cgroups,
2550 jstring proc_self_cgroup,
2551 jstring proc_self_mountinfo))
2552 jint ret = 0;
2553 #ifdef LINUX
2554 ThreadToNativeFromVM ttnfv(thread);
2555 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2556 CHECK_JNI_EXCEPTION_(env, 0);
2557 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2558 CHECK_JNI_EXCEPTION_(env, 0);
2559 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2560 CHECK_JNI_EXCEPTION_(env, 0);
2561 u1 cg_type_flags = 0;
2562 // This sets cg_type_flags
2563 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2564 ret = (jint)cg_type_flags;
2565 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2566 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2567 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2568 #endif
2569 return ret;
2570 WB_END
2571
2572 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2573 os::print_os_info(tty);
2574 WB_END
2575
2576 // Elf decoder
2577 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2578 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2579 ElfFile::_do_not_cache_elf_section = true;
2580 #endif
2581 WB_END
2582
2583 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2584 return (jlong) ResolvedMethodTable::items_count();
2585 WB_END
2586
2587 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2588 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2589 WB_END
2590
2591 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2592 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2593 // Return size in bytes.
2594 return k->size() * wordSize;
2595 WB_END
2596
2597 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2598 // It explains how the thread's priority field is used for test state coordination.
2599 //
2600 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2601 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2602 jlong tid = java_lang_Thread::thread_id(target_oop);
2603 JavaThread* target = java_lang_Thread::thread(target_oop);
2604
2605 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2606 ThreadsListHandle tlh;
2607
2608 // Look up the target thread by tid to ensure it is present
2609 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2610 if (t == nullptr) {
2611 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2612 }
2613
2614 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2615 // Allow target to terminate by boosting priority
2616 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2617
2618 // Now wait for the target to terminate
2619 while (!target->is_terminated()) {
2620 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2621 os::naked_short_sleep(0);
2622 }
2623
2624 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2625
2626 // Now release the GC inducing thread - we have to re-resolve the external oop that
2627 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2628 oop original = JNIHandles::resolve_non_null(target_handle);
2629 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2630
2631 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2632
2633 // The Java code should be creating garbage and triggering GC, which would potentially move
2634 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2635 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2636 // kick in.
2637 for (int i = 0; i < 5; i++) {
2638 oop original = JNIHandles::resolve_non_null(target_handle);
2639 oop current = t->threadObj();
2640 if (original != current) {
2641 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2642 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2643 } else {
2644 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2645 ThreadBlockInVM tbivm(thread);
2646 os::naked_short_sleep(50);
2647 }
2648 }
2649 WB_END
2650
2651 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2652 ResourceMark rm; // for verify
2653 stringStream st;
2654 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2655 frame* current_frame = fst.current();
2656 if (log) {
2657 current_frame->print_value_on(&st, nullptr);
2658 }
2659 current_frame->verify(fst.register_map());
2660 }
2661 if (log) {
2662 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2663 tty->print_raw(st.freeze());
2664 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2665 }
2666 WB_END
2667
2668 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2669 #if INCLUDE_JVMTI
2670 return JNI_TRUE;
2671 #else
2672 return JNI_FALSE;
2673 #endif
2674 WB_END
2675
2676 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2677 os::naked_short_sleep(time);
2678 WB_END
2679
2680 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2681 ThreadToNativeFromVM ttn(thread);
2682 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2683 CHECK_JNI_EXCEPTION_(env, nullptr);
2684 return info_string;
2685 WB_END
2686
2687 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2688 GCLocker::lock_critical(thread);
2689 WB_END
2690
2691 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2692 GCLocker::unlock_critical(thread);
2693 WB_END
2694
2695 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2696 #if INCLUDE_G1GC
2697 if (!UseG1GC) {
2698 ShouldNotReachHere();
2699 return;
2700 }
2701 oop obj = JNIHandles::resolve(o);
2702 G1CollectedHeap::heap()->pin_object(thread, obj);
2703 #else
2704 ShouldNotReachHere();
2705 #endif // INCLUDE_G1GC
2706 WB_END
2707
2708 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2709 #if INCLUDE_G1GC
2710 if (!UseG1GC) {
2711 ShouldNotReachHere();
2712 return;
2713 }
2714 oop obj = JNIHandles::resolve(o);
2715 G1CollectedHeap::heap()->unpin_object(thread, obj);
2716 #else
2717 ShouldNotReachHere();
2718 #endif // INCLUDE_G1GC
2719 WB_END
2720
2721 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2722 if (!Continuations::enabled()) {
2723 tty->print_cr("WB error: must be Continuations::enabled()!");
2724 return JNI_FALSE;
2725 }
2726 jboolean result = false;
2727 #if INCLUDE_JVMTI
2728 if (enable) {
2729 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2730 } else {
2731 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2732 }
2733 #endif
2734 return result;
2735 WB_END
2736
2737 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2738 void* const from = (void*)addr;
2739 void* const to = (void*)(addr + size);
2740 if (from > to) {
2741 os::pretouch_memory(from, to, os::vm_page_size());
2742 }
2743 WB_END
2744
2745 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2746 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2747 WB_END
2748
2749 #define CC (char*)
2750
2751 static JNINativeMethod methods[] = {
2752 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2753 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2754 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2755 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2756 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2757 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2758 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2759 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2760 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2761 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2762 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2763 {CC"parseCommandLine0",
2764 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2765 (void*) &WB_ParseCommandLine
2766 },
2767 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2768 (void*)&WB_AddToBootstrapClassLoaderSearch},
2769 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2770 (void*)&WB_AddToSystemClassLoaderSearch},
2771 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2772 (void*)&WB_GetCompressedOopsMaxHeapSize},
2773 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2774 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2775 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2776 #if INCLUDE_CDS
2777 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2778 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2779 #endif
2780 #if INCLUDE_G1GC
2781 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2782 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2783 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2784 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2785 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2786 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2787 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2788 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2789 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2790 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2791 (void*)&WB_G1AuxiliaryMemoryUsage },
2792 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2793 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2794 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2795 #endif // INCLUDE_G1GC
2796 #if INCLUDE_PARALLELGC
2797 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2798 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2799 #endif
2800 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2801 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2802 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2803 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2804 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2805 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2806 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2807 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2808 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2809 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2810 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2811 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2812 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2813 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2814 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2815 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2816 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2817 (void*)&WB_DeoptimizeMethod },
2818 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2819 (void*)&WB_IsMethodCompiled },
2820 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2821 (void*)&WB_IsMethodCompilable},
2822 {CC"isMethodQueuedForCompilation0",
2823 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2824 {CC"isIntrinsicAvailable0",
2825 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2826 (void*)&WB_IsIntrinsicAvailable},
2827 {CC"makeMethodNotCompilable0",
2828 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2829 {CC"testSetDontInlineMethod0",
2830 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2831 {CC"getMethodCompilationLevel0",
2832 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2833 {CC"getMethodDecompileCount0",
2834 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2835 {CC"getMethodTrapCount0",
2836 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2837 (void*)&WB_GetMethodTrapCount},
2838 {CC"getDeoptCount0",
2839 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2840 {CC"getMethodEntryBci0",
2841 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2842 {CC"getCompileQueueSize",
2843 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2844 {CC"testSetForceInlineMethod0",
2845 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2846 {CC"enqueueMethodForCompilation0",
2847 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2848 {CC"enqueueInitializerForCompilation0",
2849 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2850 {CC"markMethodProfiled",
2851 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2852 {CC"clearMethodState0",
2853 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2854 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2855 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2856 {CC"matchesMethod",
2857 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2858 (void*)&WB_MatchesMethod},
2859 {CC"matchesInline",
2860 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2861 (void*)&WB_MatchesInline},
2862 {CC"shouldPrintAssembly",
2863 CC"(Ljava/lang/reflect/Executable;I)Z",
2864 (void*)&WB_ShouldPrintAssembly},
2865
2866 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2867 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2868 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2869 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2870 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2871 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2872 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2873 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2874 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2875 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2876 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2877 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2878 (void*)&WB_SetStringVMFlag},
2879 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2880 (void*)&WB_GetBooleanVMFlag},
2881 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2882 (void*)&WB_GetIntVMFlag},
2883 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2884 (void*)&WB_GetUintVMFlag},
2885 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2886 (void*)&WB_GetIntxVMFlag},
2887 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2888 (void*)&WB_GetUintxVMFlag},
2889 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2890 (void*)&WB_GetUint64VMFlag},
2891 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2892 (void*)&WB_GetSizeTVMFlag},
2893 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2894 (void*)&WB_GetDoubleVMFlag},
2895 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2896 (void*)&WB_GetStringVMFlag},
2897 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2898 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2899 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2900 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2901 {CC"allocateMetaspace",
2902 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2903 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2904 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2905 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2906 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2907 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2908 (void*)&WB_GetNMethod },
2909 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2910 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2911 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2912 {CC"getCompilationActivityMode",
2913 CC"()I", (void*)&WB_GetCompilationActivityMode},
2914 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2915 (void*)&WB_GetMethodData },
2916 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2917 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2918 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2919 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2920 (void*)&WB_DefineModule },
2921 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2922 (void*)&WB_AddModuleExports },
2923 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2924 (void*)&WB_AddReadsModule },
2925 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2926 (void*)&WB_AddModuleExportsToAllUnnamed },
2927 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2928 (void*)&WB_AddModuleExportsToAll },
2929 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2930 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2931 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2932 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2933 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2934 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2935 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2936 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2937 {CC"encodeConstantPoolIndyIndex0",
2938 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2939 {CC"getObjectsViaKlassOopMaps0",
2940 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
2941 {CC"getObjectsViaOopIterator0",
2942 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
2943 {CC"getObjectsViaFrameOopIterator",
2944 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
2945 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2946 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2947 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2948 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2949 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2950 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2951 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2952 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2953 {CC"getMethodBooleanOption",
2954 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2955 (void*)&WB_GetMethodBooleaneOption},
2956 {CC"getMethodIntxOption",
2957 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2958 (void*)&WB_GetMethodIntxOption},
2959 {CC"getMethodUintxOption",
2960 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2961 (void*)&WB_GetMethodUintxOption},
2962 {CC"getMethodDoubleOption",
2963 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2964 (void*)&WB_GetMethodDoubleOption},
2965 {CC"getMethodStringOption",
2966 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2967 (void*)&WB_GetMethodStringOption},
2968 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2969 (void*)&WB_GetDefaultArchivePath},
2970 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2971 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2972 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2973 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2974 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2975 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2976 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2977 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2978 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2979 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2980 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2981 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2982 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2983 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2984 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2985 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2986
2987 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2988 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2989 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2990 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2991 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2992 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2993 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2994 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2995 (void*)&WB_AddCompilerDirective },
2996 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2997 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2998 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2999 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
3000 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
3001 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
3002 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
3003 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
3004 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
3005 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
3006 (void*)&WB_ConcurrentGCRunTo},
3007 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
3008 (void*)&WB_CheckLibSpecifiesNoexecstack},
3009 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
3010 {CC"validateCgroup",
3011 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
3012 (void*)&WB_ValidateCgroup },
3013 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
3014 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
3015 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
3016 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
3017 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
3018 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
3019 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
3020
3021 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
3022 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
3023 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
3024 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
3025 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
3026 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
3027 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
3028 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
3029 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
3030 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
3031 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
3032
3033 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
3034 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
3035 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
3036
3037 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
3038 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
3039 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
3040 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
3041 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
3042 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
3043 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
3044 };
3045
3046
3047 #undef CC
3048
3049 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
3050 {
3051 if (WhiteBoxAPI) {
3052 // Make sure that wbclass is loaded by the null classloader
3053 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
3054 Handle loader(THREAD, ik->class_loader());
3055 if (loader.is_null()) {
3056 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
3057 WhiteBox::set_used();
3058 }
3059 }
3060 }
3061 JVM_END