1 /*
2 * Copyright (c) 2012, 2025, 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 "cds.h"
26 #include "cds/aotMetaspace.hpp"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.hpp"
31 #include "classfile/classLoader.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/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/codeCache.hpp"
42 #include "compiler/compilationPolicy.hpp"
43 #include "compiler/compilerOracle.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/genArguments.hpp"
49 #include "jfr/periodic/sampling/jfrCPUTimeThreadSampler.hpp"
50 #include "jvm.h"
51 #include "jvmtifiles/jvmtiEnv.hpp"
52 #include "logging/log.hpp"
53 #include "memory/iterator.hpp"
54 #include "memory/memoryReserver.hpp"
55 #include "memory/metadataFactory.hpp"
56 #include "memory/metaspace/testHelpers.hpp"
57 #include "memory/metaspaceUtils.hpp"
58 #include "memory/oopFactory.hpp"
59 #include "memory/resourceArea.hpp"
60 #include "memory/universe.hpp"
61 #include "nmt/mallocSiteTable.hpp"
62 #include "oops/array.hpp"
63 #include "oops/compressedOops.hpp"
64 #include "oops/constantPool.inline.hpp"
65 #include "oops/klass.inline.hpp"
66 #include "oops/method.inline.hpp"
67 #include "oops/methodData.inline.hpp"
68 #include "oops/objArrayKlass.hpp"
69 #include "oops/objArrayOop.inline.hpp"
70 #include "oops/oop.inline.hpp"
71 #include "oops/typeArrayOop.inline.hpp"
72 #include "prims/jvmtiEnvBase.hpp"
73 #include "prims/resolvedMethodTable.hpp"
74 #include "prims/wbtestmethods/parserTests.hpp"
75 #include "prims/whitebox.inline.hpp"
76 #include "runtime/arguments.hpp"
77 #include "runtime/atomicAccess.hpp"
78 #include "runtime/deoptimization.hpp"
79 #include "runtime/fieldDescriptor.inline.hpp"
80 #include "runtime/flags/jvmFlag.hpp"
81 #include "runtime/flags/jvmFlagAccess.hpp"
82 #include "runtime/frame.inline.hpp"
83 #include "runtime/handles.inline.hpp"
84 #include "runtime/handshake.hpp"
85 #include "runtime/interfaceSupport.inline.hpp"
86 #include "runtime/javaCalls.hpp"
87 #include "runtime/javaThread.inline.hpp"
88 #include "runtime/jniHandles.inline.hpp"
89 #include "runtime/lightweightSynchronizer.hpp"
90 #include "runtime/lockStack.hpp"
91 #include "runtime/os.hpp"
92 #include "runtime/stackFrameStream.inline.hpp"
93 #include "runtime/synchronizer.hpp"
94 #include "runtime/threadSMR.hpp"
95 #include "runtime/vframe.hpp"
96 #include "runtime/vm_version.hpp"
97 #include "services/memoryService.hpp"
98 #include "utilities/align.hpp"
99 #include "utilities/checkedCast.hpp"
100 #include "utilities/debug.hpp"
101 #include "utilities/elfFile.hpp"
102 #include "utilities/exceptions.hpp"
103 #include "utilities/macros.hpp"
104 #include "utilities/nativeCallStack.hpp"
105 #include "utilities/ostream.hpp"
106 #include "utilities/vmError.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/g1HeapRegionManager.hpp"
113 #include "gc/g1/g1HeapRegionRemSet.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 "os_linux.hpp"
131 #include "osContainer_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 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length))
184 ResourceMark rm(THREAD);
185 stringStream sb;
186 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length);
187 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD);
188 return (jstring) JNIHandles::make_local(THREAD, result);
189 WB_END
190
191 WB_ENTRY(jint, WB_TakeLockAndHangInSafepoint(JNIEnv* env, jobject wb))
192 JavaThread* self = JavaThread::current();
193 // VMStatistic_lock is used to minimize interference with VM locking
194 MutexLocker mu(VMStatistic_lock);
195 VM_HangInSafepoint force_safepoint_stuck_op;
196 VMThread::execute(&force_safepoint_stuck_op);
197 ShouldNotReachHere();
198 return 0;
199 WB_END
200
201 class WBIsKlassAliveClosure : public LockedClassesDo {
202 Symbol* _name;
203 int _count;
204 public:
205 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
206
207 void do_klass(Klass* k) {
208 Symbol* ksym = k->name();
209 if (ksym->fast_compare(_name) == 0) {
210 _count++;
211 } else if (k->is_instance_klass()) {
212 // Need special handling for hidden classes because the JVM
213 // appends "+<hex-address>" to hidden class names.
214 InstanceKlass *ik = InstanceKlass::cast(k);
215 if (ik->is_hidden()) {
216 ResourceMark rm;
217 char* k_name = ksym->as_C_string();
218 // Find the first '+' char and truncate the string at that point.
219 // NOTE: This will not work correctly if the original hidden class
220 // name contains a '+'.
221 char* plus_char = strchr(k_name, '+');
222 if (plus_char != nullptr) {
223 *plus_char = 0;
224 char* c_name = _name->as_C_string();
225 if (strcmp(c_name, k_name) == 0) {
226 _count++;
227 }
228 }
229 }
230 }
231 }
232
233 int count() const {
234 return _count;
235 }
236 };
237
238 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
239 oop h_name = JNIHandles::resolve(name);
240 if (h_name == nullptr) {
241 return 0;
242 }
243 Symbol* sym = java_lang_String::as_symbol(h_name);
244 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
245
246 WBIsKlassAliveClosure closure(sym);
247 ClassLoaderDataGraph::classes_do(&closure);
248
249 // Return the count of alive classes with this name.
250 return closure.count();
251 WB_END
252
253 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
254 oop h_name = JNIHandles::resolve(name);
255 if (h_name == nullptr) {
256 return 0;
257 }
258 Symbol* sym = java_lang_String::as_symbol(h_name);
259 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
260 return (jint)sym->refcount();
261 WB_END
262
263
264 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
265 #if INCLUDE_JVMTI
266 ResourceMark rm;
267 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
268 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
269 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
270 assert(err == JVMTI_ERROR_NONE, "must not fail");
271 #endif
272 }
273 WB_END
274
275 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
276 #if INCLUDE_JVMTI
277 ResourceMark rm;
278 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
279 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
280 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
281 assert(err == JVMTI_ERROR_NONE, "must not fail");
282 #endif
283 }
284 WB_END
285
286
287 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
288 return (jlong)Arguments::max_heap_for_compressed_oops();
289 }
290 WB_END
291
292 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
293 tty->print_cr("Minimum heap %zu Initial heap %zu "
294 "Maximum heap %zu Space alignment %zu Heap alignment %zu",
295 MinHeapSize,
296 InitialHeapSize,
297 MaxHeapSize,
298 SpaceAlignment,
299 HeapAlignment);
300 }
301 WB_END
302
303 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
304 size_t granularity = os::vm_allocation_granularity();
305 ReservedHeapSpace rhs = HeapReserver::reserve(100 * granularity, granularity, os::vm_page_size(), nullptr);
306
307 // Check if constraints are complied
308 if (!( UseCompressedOops && rhs.is_reserved() &&
309 CompressedOops::base() != nullptr &&
310 CompressedOops::use_implicit_null_checks() )) {
311 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
312 "\tUseCompressedOops is %d\n"
313 "\trhs.base() is " PTR_FORMAT "\n"
314 "\tCompressedOops::base() is " PTR_FORMAT "\n"
315 "\tCompressedOops::use_implicit_null_checks() is %d",
316 UseCompressedOops,
317 p2i(rhs.base()),
318 p2i(CompressedOops::base()),
319 CompressedOops::use_implicit_null_checks());
320 return;
321 }
322
323 VirtualSpace vs;
324 vs.initialize(rhs, 50 * granularity);
325
326 tty->print_cr("Reading from no access area... ");
327 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
328 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
329 WB_END
330
331 WB_ENTRY(void, WB_DecodeNKlassAndAccessKlass(JNIEnv* env, jobject o, jint nKlass))
332 assert(UseCompressedClassPointers, "Should only call for UseCompressedClassPointers");
333 const narrowKlass nk = (narrowKlass)nKlass;
334 const Klass* const k = CompressedKlassPointers::decode_not_null_without_asserts(nKlass);
335 printf("WB_DecodeNKlassAndAccessKlass: nk %u k " PTR_FORMAT "\n", nk, p2i(k));
336 printf("Will attempt to crash now...\n");
337 fflush(stdout); // flush now - we will crash below
338 // Access k by calling a virtual function - will result in loading the vtable from *k
339 k->print_on(tty);
340 WB_END
341
342 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
343 size_t magnitude, size_t iterations) {
344 size_t granularity = os::vm_allocation_granularity();
345 ReservedHeapSpace rhs = HeapReserver::reserve(reserved_space_size * granularity, granularity, os::vm_page_size(), nullptr);
346 if (!rhs.is_reserved()) {
347 tty->print_cr("Failed to initialize ReservedSpace. Can't proceed.");
348 return 3;
349 }
350
351 VirtualSpace vs;
352 if (!vs.initialize(rhs, 0)) {
353 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
354 return 3;
355 }
356
357 int seed = os::random();
358 tty->print_cr("Random seed is %d", seed);
359
360 for (size_t i = 0; i < iterations; i++) {
361
362 // Whether we will shrink or grow
363 bool shrink = os::random() % 2L == 0;
364
365 // Get random delta to resize virtual space
366 size_t delta = (size_t)os::random() % magnitude;
367
368 // If we are about to shrink virtual space below zero, then expand instead
369 if (shrink && vs.committed_size() < delta) {
370 shrink = false;
371 }
372
373 // Resizing by delta
374 if (shrink) {
375 vs.shrink_by(delta);
376 } else {
377 // If expanding fails expand_by will silently return false
378 vs.expand_by(delta, true);
379 }
380 }
381 return 0;
382 }
383
384 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
385 jlong reserved_space_size, jlong magnitude, jlong iterations))
386 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
387 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
388 iterations);
389 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
390 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
391 return 1;
392 }
393
394 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
395 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
396 if (sizeof(size_t) < sizeof(jlong)) {
397 jlong size_t_max_value = (jlong)SIZE_MAX;
398 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
399 || iterations > size_t_max_value) {
400 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
401 return 2;
402 }
403 }
404
405 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
406 (size_t) magnitude, (size_t) iterations);
407 WB_END
408
409 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
410 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
411 WB_END
412
413 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
414 #if INCLUDE_JVMCI
415 return JVMCI::shared_library_exists();
416 #endif
417 return false;
418 WB_END
419
420 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
421 #if INCLUDE_JVMCI
422 if (EnableJVMCI) {
423 // Enter the JVMCI env that will be used by the CompileBroker.
424 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
425 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
426 }
427 #endif
428 return false;
429 WB_END
430
431 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
432 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
433 WB_END
434
435 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
436 return GCConfig::is_gc_selected_ergonomically();
437 WB_END
438
439 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
440 oop p = JNIHandles::resolve(obj);
441 #if INCLUDE_G1GC
442 if (UseG1GC) {
443 G1CollectedHeap* g1h = G1CollectedHeap::heap();
444 const G1HeapRegion* hr = g1h->heap_region_containing(p);
445 return hr->is_old_or_humongous();
446 }
447 #endif
448 #if INCLUDE_PARALLELGC
449 if (UseParallelGC) {
450 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
451 return !psh->is_in_young(p);
452 }
453 #endif
454 #if INCLUDE_ZGC
455 if (UseZGC) {
456 return ZHeap::heap()->is_old(to_zaddress(p));
457 }
458 #endif
459 #if INCLUDE_SHENANDOAHGC
460 if (UseShenandoahGC) {
461 ShenandoahHeap* sh = ShenandoahHeap::heap();
462 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
463 }
464 #endif
465 #if INCLUDE_SERIALGC
466 if (UseSerialGC) {
467 return !SerialHeap::heap()->is_in_young(p);
468 }
469 #endif
470 ShouldNotReachHere();
471 return false;
472 WB_END
473
474 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
475 oop p = JNIHandles::resolve(obj);
476 return p->size() * HeapWordSize;
477 WB_END
478
479 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
480 return (jlong)SpaceAlignment;
481 WB_END
482
483 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
484 return (jlong)HeapAlignment;
485 WB_END
486
487 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
488 return Universe::heap()->supports_concurrent_gc_breakpoints();
489 WB_END
490
491 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
492 ConcurrentGCBreakpoints::acquire_control();
493 WB_END
494
495 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
496 ConcurrentGCBreakpoints::release_control();
497 WB_END
498
499 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
500 ConcurrentGCBreakpoints::run_to_idle();
501 WB_END
502
503 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
504 Handle h_name(THREAD, JNIHandles::resolve(at));
505 ResourceMark rm;
506 const char* c_name = java_lang_String::as_utf8_string(h_name());
507 return ConcurrentGCBreakpoints::run_to(c_name);
508 WB_END
509
510 #if INCLUDE_G1GC
511
512 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
513 if (UseG1GC) {
514 G1CollectedHeap* g1h = G1CollectedHeap::heap();
515 oop result = JNIHandles::resolve(obj);
516 const G1HeapRegion* hr = g1h->heap_region_containing(result);
517 return hr->is_humongous();
518 }
519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
520 WB_END
521
522 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
523 if (UseG1GC) {
524 G1CollectedHeap* g1h = G1CollectedHeap::heap();
525 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
526 return hr->is_humongous();
527 }
528 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
529 WB_END
530
531 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
532 if (UseG1GC) {
533 G1CollectedHeap* g1h = G1CollectedHeap::heap();
534 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
535 return hr->is_free();
536 }
537 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
538 WB_END
539
540 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
541 if (UseG1GC) {
542 G1CollectedHeap* g1h = G1CollectedHeap::heap();
543 size_t nr = g1h->max_num_regions();
544 return (jlong)nr;
545 }
546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
547 WB_END
548
549 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
550 if (UseG1GC) {
551 G1CollectedHeap* g1h = G1CollectedHeap::heap();
552 size_t nr = g1h->num_free_regions();
553 return (jlong)nr;
554 }
555 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
556 WB_END
557
558 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
559 if (UseG1GC) {
560 G1CollectedHeap* g1h = G1CollectedHeap::heap();
561 return g1h->concurrent_mark()->cm_thread()->in_progress();
562 }
563 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
564 WB_END
565
566 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
567 if (UseG1GC) {
568 G1CollectedHeap* g1h = G1CollectedHeap::heap();
569 G1ConcurrentMark* cm = g1h->concurrent_mark();
570 return cm->completed_mark_cycles();
571 }
572 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
573 WB_END
574
575 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
576 if (UseG1GC) {
577 return (jint)G1HeapRegion::GrainBytes;
578 }
579 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
580 WB_END
581
582 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
583 if (UseG1GC) {
584 return G1CollectedHeap::heap()->has_uncommittable_regions();
585 }
586 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
587 WB_END
588
589 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
590 if (UseG1GC) {
591 ResourceMark rm(THREAD);
592 G1CollectedHeap* g1h = G1CollectedHeap::heap();
593 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
594 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
595 return JNIHandles::make_local(THREAD, h());
596 }
597 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
598 WB_END
599
600 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
601 if (UseG1GC) {
602 G1NUMA* numa = G1NUMA::numa();
603 return (jint)numa->num_active_nodes();
604 }
605 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
606 WB_END
607
608 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
609 if (UseG1GC) {
610 G1NUMA* numa = G1NUMA::numa();
611 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
612 const uint* node_ids = numa->node_ids();
613
614 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
615 for (int i = 0; i < num_node_ids; i++) {
616 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
617 }
618 return (jintArray) JNIHandles::make_local(THREAD, result);
619 }
620 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
621 WB_END
622
623 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
624
625 private:
626 const int _liveness;
627 size_t _total_count;
628 size_t _total_memory;
629 size_t _total_memory_to_free;
630
631 public:
632 OldRegionsLivenessClosure(int liveness) :
633 _liveness(liveness),
634 _total_count(0),
635 _total_memory(0),
636 _total_memory_to_free(0) { }
637
638 size_t total_count() { return _total_count; }
639 size_t total_memory() { return _total_memory; }
640 size_t total_memory_to_free() { return _total_memory_to_free; }
641
642 bool do_heap_region(G1HeapRegion* r) {
643 if (r->is_old()) {
644 size_t live = r->live_bytes();
645 size_t size = r->used();
646 size_t reg_size = G1HeapRegion::GrainBytes;
647 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
648 _total_memory += size;
649 ++_total_count;
650 if (size == reg_size) {
651 // We don't include non-full regions since they are unlikely included in mixed gc
652 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
653 _total_memory_to_free += size - live;
654 }
655 }
656 }
657 return false;
658 }
659 };
660
661
662 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
663 if (!UseG1GC) {
664 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
665 }
666 if (liveness < 0) {
667 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
668 }
669
670 G1CollectedHeap* g1h = G1CollectedHeap::heap();
671 OldRegionsLivenessClosure rli(liveness);
672 g1h->heap_region_iterate(&rli);
673
674 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
675 result->long_at_put(0, rli.total_count());
676 result->long_at_put(1, rli.total_memory());
677 result->long_at_put(2, rli.total_memory_to_free());
678 return (jlongArray) JNIHandles::make_local(THREAD, result);
679 WB_END
680
681 #endif // INCLUDE_G1GC
682
683 // Alloc memory using the test memory tag so that we can use that to see if
684 // NMT picks it up correctly
685 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
686 jlong addr = 0;
687 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
688 return addr;
689 WB_END
690
691 // Alloc memory with pseudo call stack. The test can create pseudo malloc
692 // allocation site to stress the malloc tracking.
693 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
694 address pc = (address)(size_t)pseudo_stack;
695 NativeCallStack stack(&pc, 1);
696 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
697 WB_END
698
699 // Alloc memory with pseudo call stack and specific memory tag.
700 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag))
701 address pc = (address)(size_t)pseudo_stack;
702 NativeCallStack stack(&pc, 1);
703 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack);
704 WB_END
705
706 // Free the memory allocated by NMTAllocTest
707 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
708 os::free((void*)(uintptr_t)mem);
709 WB_END
710
711 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
712 return (jlong)(uintptr_t)os::reserve_memory(size, mtTest);
713 WB_END
714
715 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
716 return (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size, mtTest);
717 WB_END
718
719 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
720 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
721 WB_END
722
723 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
724 os::uncommit_memory((char *)(uintptr_t)addr, size);
725 WB_END
726
727 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
728 os::release_memory((char *)(uintptr_t)addr, size);
729 WB_END
730
731 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
732 int hash_size = MallocSiteTable::hash_buckets();
733 assert(hash_size > 0, "NMT hash_size should be > 0");
734 return (jint)hash_size;
735 WB_END
736
737 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
738 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
739 return (jlong)arena;
740 WB_END
741
742 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
743 Arena* a = (Arena*)arena;
744 delete a;
745 WB_END
746
747 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
748 Arena* a = (Arena*)arena;
749 a->Amalloc(size_t(size));
750 WB_END
751
752 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
753 assert(method != nullptr, "method should not be null");
754 ThreadToNativeFromVM ttn(thread);
755 return env->FromReflectedMethod(method);
756 }
757
758 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
759 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
760 private:
761 int _result;
762 const bool _make_not_entrant;
763 public:
764 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
765 _result(0), _make_not_entrant(make_not_entrant) { }
766 int result() const { return _result; }
767
768 void doit() {
769 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
770 if (t->has_last_Java_frame()) {
771 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
772 frame* f = fst.current();
773 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
774 Deoptimization::deoptimize(t, *f);
775 if (_make_not_entrant) {
776 nmethod* nm = CodeCache::find_nmethod(f->pc());
777 assert(nm != nullptr, "did not find nmethod");
778 nm->make_not_entrant(nmethod::InvalidationReason::WHITEBOX_DEOPTIMIZATION);
779 }
780 ++_result;
781 }
782 }
783 }
784 }
785 }
786 };
787
788 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
789 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
790 VMThread::execute(&op);
791 return op.result();
792 WB_END
793
794 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
795 bool result = false;
796 if (thread->has_last_Java_frame()) {
797 ResourceMark rm(THREAD);
798 RegisterMap reg_map(thread,
799 RegisterMap::UpdateMap::include,
800 RegisterMap::ProcessFrames::include,
801 RegisterMap::WalkContinuation::skip);
802 javaVFrame *jvf = thread->last_java_vframe(®_map);
803 for (jint d = 0; d < depth && jvf != nullptr; d++) {
804 jvf = jvf->java_sender();
805 }
806 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
807 }
808 return result;
809 WB_END
810
811 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
812 DeoptimizationScope deopt_scope;
813 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
814 deopt_scope.deoptimize_marked();
815 WB_END
816
817 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
818 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
819 int result = 0;
820 CHECK_JNI_EXCEPTION_(env, result);
821
822 DeoptimizationScope deopt_scope;
823 {
824 MutexLocker mu(Compile_lock);
825 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
826 if (is_osr) {
827 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
828 } else {
829 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
830 if (mh->code() != nullptr) {
831 deopt_scope.mark(mh->code());
832 ++result;
833 }
834 }
835 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
836 }
837
838 deopt_scope.deoptimize_marked();
839
840 return result;
841 WB_END
842
843 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
844 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
845 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
846 MutexLocker mu(Compile_lock);
847 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
848 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
849 if (code == nullptr) {
850 return JNI_FALSE;
851 }
852 return !code->is_marked_for_deoptimization();
853 WB_END
854
855 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
856 if (comp == nullptr) {
857 return true;
858 }
859 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
860 bool exclude = directive->ExcludeOption;
861 DirectivesStack::release(directive);
862 return exclude;
863 }
864
865 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
866 if (is_osr) {
867 return CompilationPolicy::can_be_osr_compiled(mh, level);
868 } else {
869 return CompilationPolicy::can_be_compiled(mh, level);
870 }
871 }
872
873 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
874 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
875 return false;
876 }
877 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
878 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
879 MutexLocker mu(Compile_lock);
880 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
881
882 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
883 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
884 // to exclude a compilation of 'method'.
885 if (comp_level == CompLevel_any) {
886 // Both compilers could have ExcludeOption set. Check all combinations.
887 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
888 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
889 if (excluded_c1 && excluded_c2) {
890 // Compilation of 'method' excluded by both compilers.
891 return false;
892 }
893
894 if (excluded_c1) {
895 // C1 only has ExcludeOption set: Check if compilable with C2.
896 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
897 } else if (excluded_c2) {
898 // C2 only has ExcludeOption set: Check if compilable with C1.
899 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
900 }
901 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
902 // Compilation of 'method' excluded by compiler used for 'comp_level'.
903 return false;
904 }
905
906 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
907 WB_END
908
909 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
910 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
911 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
912 MutexLocker mu(Compile_lock);
913 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
914 return mh->queued_for_compilation();
915 WB_END
916
917 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
918 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
919 return false; // Intrinsic is not available on a non-existent compilation level.
920 }
921 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
922 if (comp == nullptr) {
923 // Could have compLevel == 0, or !TieredCompilation and incompatible values of TieredStopAtLevel and compLevel.
924 tty->print_cr("WB error: no compiler for requested compilation level %d", compLevel);
925 return false;
926 }
927
928 jmethodID method_id, compilation_context_id;
929 method_id = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
932
933 DirectiveSet* directive;
934 if (compilation_context != nullptr) {
935 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
936 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
937 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
938 directive = DirectivesStack::getMatchingDirective(cch, comp);
939 } else {
940 // Calling with null matches default directive
941 directive = DirectivesStack::getDefaultDirective(comp);
942 }
943 bool result = comp->is_intrinsic_available(mh, directive);
944 DirectivesStack::release(directive);
945 return result;
946 WB_END
947
948 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
949 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
950 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
951 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
952 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
953 return (code != nullptr ? code->comp_level() : CompLevel_none);
954 WB_END
955
956 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
957 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
958 CHECK_JNI_EXCEPTION(env);
959 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
960 if (is_osr) {
961 mh->set_not_osr_compilable("WhiteBox", comp_level);
962 } else {
963 mh->set_not_compilable("WhiteBox", comp_level);
964 }
965 WB_END
966
967 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
968 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
969 CHECK_JNI_EXCEPTION_(env, 0);
970 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
971 uint cnt = 0;
972 MethodData* mdo = mh->method_data();
973 if (mdo != nullptr) {
974 cnt = mdo->decompile_count();
975 }
976 return cnt;
977 WB_END
978
979 // Get the trap count of a method for a specific reason. If the trap count for
980 // that reason did overflow, this includes the overflow trap count of the method.
981 // If 'reason' is null, the sum of the traps for all reasons will be returned.
982 // This number includes the overflow trap count if the trap count for any reason
983 // did overflow.
984 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
985 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
986 CHECK_JNI_EXCEPTION_(env, 0);
987 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
988 uint cnt = 0;
989 MethodData* mdo = mh->method_data();
990 if (mdo != nullptr) {
991 ResourceMark rm(THREAD);
992 char* reason_str = (reason_obj == nullptr) ?
993 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
994 bool overflow = false;
995 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
996 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
997 cnt = mdo->trap_count(reason);
998 // Count in the overflow trap count on overflow
999 if (cnt == (uint)-1) {
1000 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
1001 }
1002 break;
1003 } else if (reason_str == nullptr) {
1004 uint c = mdo->trap_count(reason);
1005 if (c == (uint)-1) {
1006 c = mdo->trap_count_limit();
1007 if (!overflow) {
1008 // Count overflow trap count just once
1009 overflow = true;
1010 c += mdo->overflow_trap_count();
1011 }
1012 }
1013 cnt += c;
1014 }
1015 }
1016 }
1017 return cnt;
1018 WB_END
1019
1020 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1021 if (reason_obj == nullptr && action_obj == nullptr) {
1022 return Deoptimization::total_deoptimization_count();
1023 }
1024 ResourceMark rm(THREAD);
1025 const char *reason_str = (reason_obj == nullptr) ?
1026 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1027 const char *action_str = (action_obj == nullptr) ?
1028 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1029
1030 return Deoptimization::deoptimization_count(reason_str, action_str);
1031 WB_END
1032
1033 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1034 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1035 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1036 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1037 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1038 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1039 WB_END
1040
1041 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1042 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1043 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1044 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1045 bool result = mh->dont_inline();
1046 mh->set_dont_inline(value == JNI_TRUE);
1047 return result;
1048 WB_END
1049
1050 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1051 if (comp_level == CompLevel_any) {
1052 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1053 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1054 } else {
1055 return CompileBroker::queue_size(comp_level);
1056 }
1057 WB_END
1058
1059 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1060 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1061 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1062 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1063 bool result = mh->force_inline();
1064 mh->set_force_inline(value == JNI_TRUE);
1065 return result;
1066 WB_END
1067
1068 #ifdef LINUX
1069 bool WhiteBox::validate_cgroup(bool cgroups_v2_enabled,
1070 const char* controllers_file,
1071 const char* proc_self_cgroup,
1072 const char* proc_self_mountinfo,
1073 u1* cg_flags) {
1074 CgroupInfo cg_infos[CG_INFO_LENGTH];
1075 return CgroupSubsystemFactory::determine_type(cg_infos, cgroups_v2_enabled, controllers_file,
1076 proc_self_cgroup,
1077 proc_self_mountinfo, cg_flags);
1078 }
1079 #endif
1080
1081 bool WhiteBox::is_asan_enabled() {
1082 #ifdef ADDRESS_SANITIZER
1083 return true;
1084 #else
1085 return false;
1086 #endif
1087 }
1088
1089 bool WhiteBox::is_ubsan_enabled() {
1090 #ifdef UNDEFINED_BEHAVIOR_SANITIZER
1091 return true;
1092 #else
1093 return false;
1094 #endif
1095 }
1096
1097 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1098 // Screen for unavailable/bad comp level or null method
1099 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1100 if (method == nullptr) {
1101 tty->print_cr("WB error: request to compile null method");
1102 return false;
1103 }
1104 if (method->is_abstract()) {
1105 tty->print_cr("WB error: request to compile abstract method");
1106 return false;
1107 }
1108 if (comp_level > CompilationPolicy::highest_compile_level()) {
1109 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1110 return false;
1111 }
1112 if (comp == nullptr) {
1113 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1114 return false;
1115 }
1116
1117 // Check if compilation is blocking
1118 methodHandle mh(THREAD, method);
1119 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1120 bool is_blocking = !directive->BackgroundCompilationOption;
1121 DirectivesStack::release(directive);
1122
1123 // Compile method and check result
1124 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1125 MutexLocker mu(THREAD, Compile_lock);
1126 bool is_queued = mh->queued_for_compilation();
1127 if ((!is_blocking && is_queued) || nm != nullptr) {
1128 return true;
1129 }
1130 // Check code again because compilation may be finished before Compile_lock is acquired.
1131 if (bci == InvocationEntryBci) {
1132 nmethod* code = mh->code();
1133 if (code != nullptr) {
1134 return true;
1135 }
1136 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1137 return true;
1138 }
1139 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1140 mh->print_short_name(tty);
1141 tty->cr();
1142 if (is_blocking && is_queued) {
1143 tty->print_cr("WB error: blocking compilation is still in queue!");
1144 }
1145 return false;
1146 }
1147
1148 size_t WhiteBox::get_in_use_monitor_count() {
1149 return ObjectSynchronizer::_in_use_list.count();
1150 }
1151
1152 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1153 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1154 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1155 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1156 WB_END
1157
1158 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1159 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1160 Method* clinit = ik->class_initializer();
1161 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1162 return false;
1163 }
1164 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1165 WB_END
1166
1167 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1168 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1169 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1170
1171 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1172 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1173 bool result = directive->PrintAssemblyOption;
1174 DirectivesStack::release(directive);
1175
1176 return result;
1177 WB_END
1178
1179 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1180 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1181 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1182
1183 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1184
1185 ResourceMark rm(THREAD);
1186 const char* error_msg = nullptr;
1187 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1188 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1189
1190 if (m == nullptr) {
1191 assert(error_msg != nullptr, "Always have an error message");
1192 tty->print_cr("Got error: %s", error_msg);
1193 return -1; // Pattern failed
1194 }
1195
1196 // Pattern works - now check if it matches
1197 int result;
1198 if (m->match(mh, InlineMatcher::force_inline)) {
1199 result = 2; // Force inline match
1200 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1201 result = 1; // Dont inline match
1202 } else {
1203 result = 0; // No match
1204 }
1205 delete m;
1206 return result;
1207 WB_END
1208
1209 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1210 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1211 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1212
1213 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1214
1215 ResourceMark rm;
1216 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1217
1218 const char* error_msg = nullptr;
1219
1220 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1221 if (m == nullptr) {
1222 assert(error_msg != nullptr, "Must have error_msg");
1223 tty->print_cr("Got error: %s", error_msg);
1224 return -1;
1225 }
1226
1227 // Pattern works - now check if it matches
1228 int result = m->matches(mh);
1229 delete m;
1230 assert(result == 0 || result == 1, "Result out of range");
1231 return result;
1232 WB_END
1233
1234 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1235 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1236 CHECK_JNI_EXCEPTION(env);
1237 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1238
1239 MethodData* mdo = mh->method_data();
1240 if (mdo == nullptr) {
1241 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1242 mdo = mh->method_data();
1243 }
1244 mdo->init();
1245 InvocationCounter* icnt = mdo->invocation_counter();
1246 InvocationCounter* bcnt = mdo->backedge_counter();
1247 // set i-counter according to CompilationPolicy::is_method_profiled
1248 icnt->set(Tier4MinInvocationThreshold);
1249 bcnt->set(Tier4CompileThreshold);
1250 WB_END
1251
1252 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1253 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1254 CHECK_JNI_EXCEPTION(env);
1255 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1256 MutexLocker mu(THREAD, Compile_lock);
1257 MethodData* mdo = mh->method_data();
1258 MethodCounters* mcs = mh->method_counters();
1259
1260 if (mdo != nullptr) {
1261 mdo->init();
1262 ResourceMark rm(THREAD);
1263 int arg_count = mdo->method()->size_of_parameters();
1264 for (int i = 0; i < arg_count; i++) {
1265 mdo->set_arg_modified(i, 0);
1266 }
1267 mdo->clean_method_data(/*always_clean*/true);
1268 }
1269
1270 mh->clear_is_not_c1_compilable();
1271 mh->clear_is_not_c2_compilable();
1272 mh->clear_is_not_c2_osr_compilable();
1273 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1274 if (mcs != nullptr) {
1275 mcs->clear_counters();
1276 }
1277 WB_END
1278
1279 template <typename T, int type_enum>
1280 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1281 if (name == nullptr) {
1282 return false;
1283 }
1284 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1285 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1286 CHECK_JNI_EXCEPTION_(env, false);
1287 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1288 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1289 env->ReleaseStringUTFChars(name, flag_name);
1290 return (result == JVMFlag::SUCCESS);
1291 }
1292
1293 template <typename T, int type_enum>
1294 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1295 if (name == nullptr) {
1296 return false;
1297 }
1298 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1299 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1300 CHECK_JNI_EXCEPTION_(env, false);
1301 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1302 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1303 env->ReleaseStringUTFChars(name, flag_name);
1304 return (result == JVMFlag::SUCCESS);
1305 }
1306
1307 template <typename T>
1308 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1309 ResourceMark rm(thread);
1310 jclass clazz = env->FindClass(name->as_C_string());
1311 CHECK_JNI_EXCEPTION_(env, nullptr);
1312 jmethodID methodID = env->GetStaticMethodID(clazz,
1313 vmSymbols::valueOf_name()->as_C_string(),
1314 sig->as_C_string());
1315 CHECK_JNI_EXCEPTION_(env, nullptr);
1316 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1317 CHECK_JNI_EXCEPTION_(env, nullptr);
1318 return result;
1319 }
1320
1321 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1322 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1323 }
1324 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1325 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1326 }
1327 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1328 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1329 }
1330 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1331 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1332 }*/
1333 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1334 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1335 }
1336
1337 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1338 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1339 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1340 CHECK_JNI_EXCEPTION_(env, nullptr);
1341 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1342 env->ReleaseStringUTFChars(name, flag_name);
1343 return result;
1344 }
1345
1346 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1347 const JVMFlag* flag = getVMFlag(thread, env, name);
1348 return (flag != nullptr) && flag->is_constant_in_binary();
1349 WB_END
1350
1351 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1352 const JVMFlag* flag = getVMFlag(thread, env, name);
1353 return (flag != nullptr) && flag->is_default();
1354 WB_END
1355
1356 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1357 const JVMFlag* flag = getVMFlag(thread, env, name);
1358 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1359 WB_END
1360
1361 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1362 bool result;
1363 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1364 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1365 return booleanBox(thread, env, result);
1366 }
1367 return nullptr;
1368 WB_END
1369
1370 template <typename T, int type_enum>
1371 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1372 T result;
1373 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1374 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1375 return longBox(thread, env, result);
1376 }
1377 return nullptr;
1378 }
1379
1380 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1381 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1382 WB_END
1383
1384 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1385 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1386 WB_END
1387
1388 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1389 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1390 WB_END
1391
1392 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1393 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1394 WB_END
1395
1396 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1397 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1398 WB_END
1399
1400 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1401 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1402 WB_END
1403
1404 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1405 double result;
1406 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1407 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1408 return doubleBox(thread, env, result);
1409 }
1410 return nullptr;
1411 WB_END
1412
1413 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1414 ccstr ccstrResult;
1415 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1416 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1417 jstring result = env->NewStringUTF(ccstrResult);
1418 CHECK_JNI_EXCEPTION_(env, nullptr);
1419 return result;
1420 }
1421 return nullptr;
1422 WB_END
1423
1424 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1425 bool result = value == JNI_TRUE ? true : false;
1426 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1427 WB_END
1428
1429 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1430 int result = checked_cast<int>(value);
1431 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1432 WB_END
1433
1434 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1435 uint result = checked_cast<uint>(value);
1436 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1437 WB_END
1438
1439 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1440 intx result = value;
1441 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1442 WB_END
1443
1444 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1445 uintx result = value;
1446 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1447 WB_END
1448
1449 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1450 uint64_t result = value;
1451 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1452 WB_END
1453
1454 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1455 size_t result = value;
1456 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1457 WB_END
1458
1459 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1460 double result = value;
1461 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1462 WB_END
1463
1464 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1465 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1466 const char* ccstrValue;
1467 if (value == nullptr) {
1468 ccstrValue = nullptr;
1469 }
1470 else {
1471 ccstrValue = env->GetStringUTFChars(value, nullptr);
1472 CHECK_JNI_EXCEPTION(env);
1473 }
1474 {
1475 ccstr param = ccstrValue;
1476 ThreadInVMfromNative ttvfn(thread); // back to VM
1477 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1478 assert(param == nullptr, "old value is freed automatically and not returned");
1479 }
1480 }
1481 if (value != nullptr) {
1482 env->ReleaseStringUTFChars(value, ccstrValue);
1483 }
1484 WB_END
1485
1486 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1487 WhiteBox::compilation_locked = true;
1488 WB_END
1489
1490 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1491 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1492 WhiteBox::compilation_locked = false;
1493 mo.notify_all();
1494 WB_END
1495
1496 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1497 ResourceMark rm(THREAD);
1498 int len;
1499 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1500 return (StringTable::lookup(name, len) != nullptr);
1501 WB_END
1502
1503 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1504 Universe::heap()->collect(GCCause::_wb_full_gc);
1505 WB_END
1506
1507 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1508 Universe::heap()->collect(GCCause::_wb_young_gc);
1509 WB_END
1510
1511 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1512 // static+volatile in order to force the read to happen
1513 // (not be eliminated by the compiler)
1514 static char c;
1515 static volatile char* p;
1516
1517 p = os::reserve_memory(os::vm_allocation_granularity(), mtTest);
1518 if (p == nullptr) {
1519 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1520 }
1521
1522 c = *p;
1523 WB_END
1524
1525 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1526 const char* features = VM_Version::cpu_info_string();
1527 ThreadToNativeFromVM ttn(thread);
1528 jstring features_string = env->NewStringUTF(features);
1529
1530 CHECK_JNI_EXCEPTION_(env, nullptr);
1531
1532 return features_string;
1533 WB_END
1534
1535 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1536 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1537 return CodeCache::get_code_heap(code)->code_blob_type();
1538 }
1539
1540 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1541 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1542 return CodeCache::get_code_heap(blob_type);
1543 }
1544
1545 struct CodeBlobStub {
1546 CodeBlobStub(const CodeBlob* blob) :
1547 name(os::strdup(blob->name())),
1548 size(blob->size()),
1549 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1550 address((jlong) blob) { }
1551 ~CodeBlobStub() { os::free((void*) name); }
1552 const char* const name;
1553 const jint size;
1554 const jint blob_type;
1555 const jlong address;
1556 };
1557
1558 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1559 ResourceMark rm;
1560 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1561 CHECK_JNI_EXCEPTION_(env, nullptr);
1562 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1563
1564 jstring name = env->NewStringUTF(cb->name);
1565 CHECK_JNI_EXCEPTION_(env, nullptr);
1566 env->SetObjectArrayElement(result, 0, name);
1567
1568 jobject obj = integerBox(thread, env, cb->size);
1569 CHECK_JNI_EXCEPTION_(env, nullptr);
1570 env->SetObjectArrayElement(result, 1, obj);
1571
1572 obj = integerBox(thread, env, cb->blob_type);
1573 CHECK_JNI_EXCEPTION_(env, nullptr);
1574 env->SetObjectArrayElement(result, 2, obj);
1575
1576 obj = longBox(thread, env, cb->address);
1577 CHECK_JNI_EXCEPTION_(env, nullptr);
1578 env->SetObjectArrayElement(result, 3, obj);
1579
1580 return result;
1581 }
1582
1583 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1584 ResourceMark rm(THREAD);
1585 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1586 CHECK_JNI_EXCEPTION_(env, nullptr);
1587 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1588 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1589 jobjectArray result = nullptr;
1590 if (code == nullptr) {
1591 return result;
1592 }
1593 int comp_level = code->comp_level();
1594 int insts_size = code->insts_size();
1595
1596 ThreadToNativeFromVM ttn(thread);
1597 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1598 CHECK_JNI_EXCEPTION_(env, nullptr);
1599 result = env->NewObjectArray(5, clazz, nullptr);
1600 if (result == nullptr) {
1601 return result;
1602 }
1603
1604 CodeBlobStub stub(code);
1605 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1606 CHECK_JNI_EXCEPTION_(env, nullptr);
1607 env->SetObjectArrayElement(result, 0, codeBlob);
1608
1609 jobject level = integerBox(thread, env, comp_level);
1610 CHECK_JNI_EXCEPTION_(env, nullptr);
1611 env->SetObjectArrayElement(result, 1, level);
1612
1613 jbyteArray insts = env->NewByteArray(insts_size);
1614 CHECK_JNI_EXCEPTION_(env, nullptr);
1615 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1616 env->SetObjectArrayElement(result, 2, insts);
1617
1618 jobject id = integerBox(thread, env, code->compile_id());
1619 CHECK_JNI_EXCEPTION_(env, nullptr);
1620 env->SetObjectArrayElement(result, 3, id);
1621
1622 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1623 CHECK_JNI_EXCEPTION_(env, nullptr);
1624 env->SetObjectArrayElement(result, 4, entry_point);
1625
1626 return result;
1627 WB_END
1628
1629 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1630 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1631 BufferBlob* blob;
1632 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1633 if (full_size < size) {
1634 full_size += align_up(size - full_size, oopSize);
1635 }
1636 {
1637 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1638 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1639 if (blob != nullptr) {
1640 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1641 }
1642 }
1643 // Track memory usage statistic after releasing CodeCache_lock
1644 MemoryService::track_code_cache_memory_usage();
1645 return blob;
1646 }
1647
1648 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1649 if (size < 0) {
1650 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1651 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1652 }
1653 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1654 WB_END
1655
1656 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1657 if (addr == 0) {
1658 return;
1659 }
1660 BufferBlob::free((BufferBlob*) addr);
1661 WB_END
1662
1663 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1664 ResourceMark rm;
1665 GrowableArray<CodeBlobStub*> blobs;
1666 {
1667 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1668 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1669 if (heap == nullptr) {
1670 return nullptr;
1671 }
1672 for (CodeBlob* cb = (CodeBlob*) heap->first();
1673 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1674 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1675 new (stub) CodeBlobStub(cb);
1676 blobs.append(stub);
1677 }
1678 }
1679 ThreadToNativeFromVM ttn(thread);
1680 jobjectArray result = nullptr;
1681 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1682 CHECK_JNI_EXCEPTION_(env, nullptr);
1683 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1684 CHECK_JNI_EXCEPTION_(env, nullptr);
1685 if (result == nullptr) {
1686 return result;
1687 }
1688 int i = 0;
1689 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1690 it != blobs.end(); ++it) {
1691 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1692 CHECK_JNI_EXCEPTION_(env, nullptr);
1693 env->SetObjectArrayElement(result, i, obj);
1694 CHECK_JNI_EXCEPTION_(env, nullptr);
1695 ++i;
1696 }
1697 return result;
1698 WB_END
1699
1700 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1701 return CompileBroker::get_compilation_activity_mode();
1702 WB_END
1703
1704 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1705 if (addr == 0) {
1706 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1707 "WB_GetCodeBlob: addr is null");
1708 }
1709 ThreadToNativeFromVM ttn(thread);
1710 CodeBlobStub stub((CodeBlob*) addr);
1711 return codeBlob2objectArray(thread, env, &stub);
1712 WB_END
1713
1714 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1715 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1716 CHECK_JNI_EXCEPTION_(env, 0);
1717 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1718 return (jlong) mh->method_data();
1719 WB_END
1720
1721 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1722 return (jlong) thread->stack_size();
1723 WB_END
1724
1725 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1726 return (jlong) thread->stack_overflow_state()->stack_available(
1727 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1728 WB_END
1729
1730
1731 int WhiteBox::array_bytes_to_length(size_t bytes) {
1732 return Array<u1>::bytes_to_length(bytes);
1733 }
1734
1735 ///////////////
1736 // MetaspaceTestContext and MetaspaceTestArena
1737 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1738 assert(is_aligned(commit_limit, BytesPerWord),
1739 "WB_CreateMetaspaceTestContext: commit_limit is not a multiple of the system word byte size");
1740 assert(is_aligned(reserve_limit, BytesPerWord),
1741 "WB_CreateMetaspaceTestContext: reserve_limit is not a multiple of the system word byte size");
1742 metaspace::MetaspaceTestContext* context =
1743 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit / BytesPerWord,
1744 (size_t) reserve_limit / BytesPerWord);
1745 return (jlong)p2i(context);
1746 WB_END
1747
1748 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1749 delete (metaspace::MetaspaceTestContext*) context;
1750 WB_END
1751
1752 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1753 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1754 context0->purge_area();
1755 WB_END
1756
1757 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1758 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1759 context0->print_on(tty);
1760 WB_END
1761
1762 WB_ENTRY(jlong, WB_GetTotalCommittedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1763 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1764 return (jlong)context0->committed_words() * BytesPerWord;
1765 WB_END
1766
1767 WB_ENTRY(jlong, WB_GetTotalUsedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1768 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1769 return (jlong)context0->used_words() * BytesPerWord;
1770 WB_END
1771
1772 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1773 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ClassMirrorHolderMetaspaceType : Metaspace::StandardMetaspaceType;
1774 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1775 return (jlong)p2i(context0->create_arena(type));
1776 WB_END
1777
1778 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1779 delete (metaspace::MetaspaceTestArena*) arena;
1780 WB_END
1781
1782 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong size))
1783 assert(is_aligned(size, BytesPerWord),
1784 "WB_AllocateFromMetaspaceTestArena: size is not a multiple of the system word byte size");
1785 metaspace::MetaspaceTestArena *arena0 = (metaspace::MetaspaceTestArena *)arena;
1786 MetaWord *p = arena0->allocate((size_t) size / BytesPerWord);
1787 return (jlong)p2i(p);
1788 WB_END
1789
1790 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong size))
1791 assert(is_aligned(size, BytesPerWord),
1792 "WB_DeallocateToMetaspaceTestArena: size is not a multiple of the system word byte size");
1793 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1794 arena0->deallocate((MetaWord*)p, (size_t) size / BytesPerWord);
1795 WB_END
1796
1797 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1798 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1799 WB_END
1800
1801 WB_ENTRY(jlong, WB_WordSize(JNIEnv* env))
1802 return (jlong)BytesPerWord;
1803 WB_END
1804
1805 WB_ENTRY(jlong, WB_RootChunkWordSize(JNIEnv* env))
1806 return (jlong)Metaspace::reserve_alignment_words();
1807 WB_END
1808
1809 WB_ENTRY(jboolean, WB_IsStaticallyLinked(JNIEnv* env, jobject wb))
1810 return JVM_IsStaticallyLinked();
1811 WB_END
1812
1813 //////////////
1814
1815 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1816 if (size < 0) {
1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1818 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1819 }
1820
1821 oop class_loader_oop = JNIHandles::resolve(class_loader);
1822 ClassLoaderData* cld = class_loader_oop != nullptr
1823 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1824 : ClassLoaderData::the_null_class_loader_data();
1825
1826 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1827
1828 return (jlong)(uintptr_t)metadata;
1829 WB_END
1830
1831 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1832 jstring version, jstring location, jobjectArray packages))
1833 Handle h_module (THREAD, JNIHandles::resolve(module));
1834 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1835 WB_END
1836
1837 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1838 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1839 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1840 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1841 WB_END
1842
1843 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1844 Handle h_module (THREAD, JNIHandles::resolve(module));
1845 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1846 WB_END
1847
1848 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1849 Handle h_module (THREAD, JNIHandles::resolve(module));
1850 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1851 WB_END
1852
1853 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1854 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1855 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1856 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1857 WB_END
1858
1859 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1860 if (inc < 0) {
1861 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1862 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1863 }
1864
1865 jlong max_size_t = (jlong) ((size_t) -1);
1866 if (inc > max_size_t) {
1867 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1868 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1869 }
1870
1871 size_t new_cap_until_GC = 0;
1872 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1873 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1874 if (!success) {
1875 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1876 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1877 "due to contention with another thread");
1878 }
1879 return (jlong) new_cap_until_GC;
1880 WB_END
1881
1882 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1883 return (jlong) MetaspaceGC::capacity_until_GC();
1884 WB_END
1885
1886 // The function is only valid when CDS is available.
1887 WB_ENTRY(jlong, WB_AOTMetaspaceRegionAlignment(JNIEnv* env, jobject wb))
1888 #if INCLUDE_CDS
1889 return (jlong)AOTMetaspace::core_region_alignment();
1890 #else
1891 ShouldNotReachHere();
1892 return 0L;
1893 #endif
1894 WB_END
1895
1896 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1897 oop obj_oop = JNIHandles::resolve(obj);
1898 return (jboolean) obj_oop->mark().has_monitor();
1899 WB_END
1900
1901 WB_ENTRY(jboolean, WB_IsAsanEnabled(JNIEnv* env))
1902 return (jboolean) WhiteBox::is_asan_enabled();
1903 WB_END
1904
1905 WB_ENTRY(jboolean, WB_IsUbsanEnabled(JNIEnv* env))
1906 return (jboolean) WhiteBox::is_ubsan_enabled();
1907 WB_END
1908
1909 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1910 return (jlong) WhiteBox::get_in_use_monitor_count();
1911 WB_END
1912
1913 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1914 return (jint) LockStack::CAPACITY;
1915 WB_END
1916
1917 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1918 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1919 WB_END
1920
1921 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1922 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1923 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1924 WB_END
1925
1926 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1927 VM_ForceSafepoint force_safepoint_op;
1928 VMThread::execute(&force_safepoint_op);
1929 WB_END
1930
1931 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1932 nullStream dev_null;
1933 ClassLoaderStatsVMOperation force_op(&dev_null);
1934 VMThread::execute(&force_op);
1935 WB_END
1936
1937 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1938 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1939 return (jlong) ik->constants();
1940 WB_END
1941
1942 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1943 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1944 objArrayOop resolved_refs= ik->constants()->resolved_references();
1945 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1946 WB_END
1947
1948 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1949 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1950 ConstantPool* cp = ik->constants();
1951 if (cp->cache() == nullptr) {
1952 return -1;
1953 }
1954 return cp->resolved_field_entries_length();
1955 WB_END
1956
1957 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1958 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1959 ConstantPool* cp = ik->constants();
1960 if (cp->cache() == nullptr) {
1961 return -1;
1962 }
1963 return cp->resolved_field_entry_at(index)->constant_pool_index();
1964 WB_END
1965
1966 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1967 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1968 ConstantPool* cp = ik->constants();
1969 if (cp->cache() == nullptr) {
1970 return -1;
1971 }
1972 return cp->resolved_method_entries_length();
1973 WB_END
1974
1975 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1976 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1977 ConstantPool* cp = ik->constants();
1978 if (cp->cache() == nullptr) {
1979 return -1;
1980 }
1981 return cp->resolved_method_entry_at(index)->constant_pool_index();
1982 WB_END
1983
1984 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1985 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1986 ConstantPool* cp = ik->constants();
1987 if (cp->cache() == nullptr) {
1988 return -1;
1989 }
1990 return cp->resolved_indy_entries_length();
1991 WB_END
1992
1993 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1994 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1995 ConstantPool* cp = ik->constants();
1996 if (cp->cache() == nullptr) {
1997 return -1;
1998 }
1999 return cp->resolved_indy_entry_at(index)->constant_pool_index();
2000 WB_END
2001
2002 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
2003 ThreadToNativeFromVM ttnfv(thread);
2004 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2005 ResourceMark rm;
2006 stringStream st;
2007 {
2008 ThreadInVMfromNative ttvfn(thread); // back to VM
2009 ClassPrinter::print_classes(c, flags, &st);
2010 }
2011 jstring result = env->NewStringUTF(st.freeze());
2012 CHECK_JNI_EXCEPTION_(env, nullptr);
2013 return result;
2014 WB_END
2015
2016 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
2017 ThreadToNativeFromVM ttnfv(thread);
2018 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2019 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
2020 ResourceMark rm;
2021 stringStream st;
2022 {
2023 ThreadInVMfromNative ttvfn(thread); // back to VM
2024 ClassPrinter::print_methods(c, m, flags, &st);
2025 }
2026 jstring result = env->NewStringUTF(st.freeze());
2027 CHECK_JNI_EXCEPTION_(env, nullptr);
2028 return result;
2029 WB_END
2030
2031 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
2032 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
2033 VMThread::execute(&clear_ics);
2034 WB_END
2035
2036 template <typename T>
2037 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
2038 assert(value != nullptr, "sanity");
2039 if (method == nullptr || name == nullptr) {
2040 return false;
2041 }
2042 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2043 CHECK_JNI_EXCEPTION_(env, false);
2044 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2045 // can't be in VM when we call JNI
2046 ThreadToNativeFromVM ttnfv(thread);
2047 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2048 CHECK_JNI_EXCEPTION_(env, false);
2049 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
2050 env->ReleaseStringUTFChars(name, flag_name);
2051 if (option == CompileCommandEnum::Unknown) {
2052 return false;
2053 }
2054 if (!CompilerOracle::option_matches_type(option, *value)) {
2055 return false;
2056 }
2057 return CompilerOracle::has_option_value(mh, option, *value);
2058 }
2059
2060 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2061 bool result;
2062 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2063 // can't be in VM when we call JNI
2064 ThreadToNativeFromVM ttnfv(thread);
2065 return booleanBox(thread, env, result);
2066 }
2067 return nullptr;
2068 WB_END
2069
2070 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2071 intx result;
2072 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2073 // can't be in VM when we call JNI
2074 ThreadToNativeFromVM ttnfv(thread);
2075 return longBox(thread, env, result);
2076 }
2077 return nullptr;
2078 WB_END
2079
2080 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2081 uintx result;
2082 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2083 // can't be in VM when we call JNI
2084 ThreadToNativeFromVM ttnfv(thread);
2085 return longBox(thread, env, result);
2086 }
2087 return nullptr;
2088 WB_END
2089
2090 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2091 double result;
2092 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2093 // can't be in VM when we call JNI
2094 ThreadToNativeFromVM ttnfv(thread);
2095 return doubleBox(thread, env, result);
2096 }
2097 return nullptr;
2098 WB_END
2099
2100 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2101 ccstr ccstrResult;
2102 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2103 // can't be in VM when we call JNI
2104 ThreadToNativeFromVM ttnfv(thread);
2105 jstring result = env->NewStringUTF(ccstrResult);
2106 CHECK_JNI_EXCEPTION_(env, nullptr);
2107 return result;
2108 }
2109 return nullptr;
2110 WB_END
2111
2112 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2113 const char* p = CDSConfig::default_archive_path();
2114 ThreadToNativeFromVM ttn(thread);
2115 jstring path_string = env->NewStringUTF(p);
2116
2117 CHECK_JNI_EXCEPTION_(env, nullptr);
2118
2119 return path_string;
2120 WB_END
2121
2122 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2123 return CDSConfig::is_using_archive();
2124 WB_END
2125
2126 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2127 #if INCLUDE_CDS
2128 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2129 #else
2130 ShouldNotReachHere();
2131 return (jint)-1;
2132 #endif
2133 WB_END
2134
2135 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2136 #if INCLUDE_CDS
2137 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2138 #else
2139 ShouldNotReachHere();
2140 return (jint)-1;
2141 #endif
2142 WB_END
2143
2144 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2145 return FileMapInfo::memory_mapping_failed();
2146 WB_END
2147
2148 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2149 ResourceMark rm(THREAD);
2150 oop str_oop = JNIHandles::resolve(str);
2151 int length;
2152 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2153 return StringTable::lookup_shared(chars, length) == str_oop;
2154 WB_END
2155
2156 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2157 return (jboolean)AOTMetaspace::in_aot_cache(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2158 WB_END
2159
2160 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2161 return ArchiveHeapLoader::is_mapped();
2162 WB_END
2163
2164 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2165 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2166 if (!k->is_instance_klass()) {
2167 return;
2168 }
2169 InstanceKlass *ik = InstanceKlass::cast(k);
2170 ik->link_class(THREAD); // may throw verification error
2171 WB_END
2172
2173 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2174 return ArchiveHeapLoader::is_mapped();
2175 WB_END
2176
2177 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2178 #if INCLUDE_CDS
2179 // An exploded build inhibits use of CDS. Therefore, for the
2180 // purpose of testing, the JVM can be treated as not having CDS
2181 // built in at all.
2182 return ClassLoader::has_jrt_entry();
2183 #else
2184 return false;
2185 #endif // INCLUDE_CDS
2186 WB_END
2187
2188 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2189 #if COMPILER2_OR_JVMCI
2190 return true;
2191 #else
2192 return false;
2193 #endif
2194 WB_END
2195
2196 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2197 #if INCLUDE_JVMCI
2198 return JVMCIGlobals::gc_supports_jvmci();
2199 #else
2200 return false;
2201 #endif
2202 WB_END
2203
2204 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2205 return !CDSConfig::are_vm_options_incompatible_with_dumping_heap();
2206 WB_END
2207
2208
2209 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2210 #if INCLUDE_JFR
2211 return true;
2212 #else
2213 return false;
2214 #endif // INCLUDE_JFR
2215 WB_END
2216
2217 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2218 #if defined(DTRACE_ENABLED)
2219 return true;
2220 #else
2221 return false;
2222 #endif // DTRACE_ENABLED
2223 WB_END
2224
2225 #if INCLUDE_CDS
2226
2227 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2228 ResourceMark rm;
2229 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2230 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2231 return result;
2232 WB_END
2233
2234 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2235 ResourceMark rm;
2236 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2237 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2238 return result;
2239 WB_END
2240
2241 #endif // INCLUDE_CDS
2242
2243 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2244 class ReadMonitorsHandshakeClosure : public HandshakeClosure {
2245 jboolean _executed;
2246
2247 void do_thread(Thread* th) {
2248 JavaThread* jt = JavaThread::cast(th);
2249 ResourceMark rm;
2250
2251 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2252
2253 if (!jt->has_last_Java_frame()) {
2254 return;
2255 }
2256 RegisterMap rmap(jt,
2257 RegisterMap::UpdateMap::include,
2258 RegisterMap::ProcessFrames::include,
2259 RegisterMap::WalkContinuation::skip);
2260 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2261 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2262 if (monitors != nullptr) {
2263 int len = monitors->length();
2264 // Walk monitors youngest to oldest
2265 for (int i = len - 1; i >= 0; i--) {
2266 MonitorInfo* mon_info = monitors->at(i);
2267 if (mon_info->eliminated()) continue;
2268 oop owner = mon_info->owner();
2269 if (owner != nullptr) {
2270 info->append(mon_info);
2271 }
2272 }
2273 }
2274 }
2275 _executed = true;
2276 }
2277
2278 public:
2279 ReadMonitorsHandshakeClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2280 jboolean executed() const { return _executed; }
2281 };
2282
2283 ReadMonitorsHandshakeClosure rmhc;
2284 if (thread_handle != nullptr) {
2285 ThreadsListHandle tlh;
2286 JavaThread* target = nullptr;
2287 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2288 if (is_alive) {
2289 Handshake::execute(&rmhc, &tlh, target);
2290 }
2291 }
2292 return rmhc.executed();
2293 WB_END
2294
2295 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2296 class TraceSelfHandshakeClosure : public HandshakeClosure {
2297 jint _num_threads_completed;
2298
2299 void do_thread(Thread* th) {
2300 JavaThread* jt = JavaThread::cast(th);
2301 ResourceMark rm;
2302
2303 jt->print_on(tty);
2304 jt->print_stack_on(tty);
2305 tty->cr();
2306 AtomicAccess::inc(&_num_threads_completed);
2307 }
2308
2309 public:
2310 TraceSelfHandshakeClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2311
2312 jint num_threads_completed() const { return _num_threads_completed; }
2313 };
2314 TraceSelfHandshakeClosure tshc(Thread::current());
2315
2316 if (all_threads) {
2317 Handshake::execute(&tshc);
2318 } else if (thread_handle != nullptr) {
2319 ThreadsListHandle tlh;
2320 JavaThread* target = nullptr;
2321 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2322 if (is_alive) {
2323 Handshake::execute(&tshc, &tlh, target);
2324 }
2325 }
2326 return tshc.num_threads_completed();
2327 WB_END
2328
2329 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2330 class TraceSelfHandshakeClosure : public AsyncHandshakeClosure {
2331 JavaThread* _self;
2332 void do_thread(Thread* th) {
2333 assert(th->is_Java_thread(), "sanity");
2334 // AsynchHandshake handshakes are only executed by target.
2335 assert(_self == th, "Must be");
2336 assert(Thread::current() == th, "Must be");
2337 JavaThread* jt = JavaThread::cast(th);
2338 ResourceMark rm;
2339 jt->print_on(tty);
2340 jt->print_stack_on(tty);
2341 tty->cr();
2342 }
2343
2344 public:
2345 TraceSelfHandshakeClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2346 };
2347 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 TraceSelfHandshakeClosure* tshc = new TraceSelfHandshakeClosure(target);
2353 Handshake::execute(tshc, target);
2354 }
2355 }
2356 WB_END
2357
2358 static volatile int _emulated_lock = 0;
2359
2360 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2361 JavaThread* self = JavaThread::current();
2362
2363 {
2364 // Before trying to acquire the lock transition into a safepoint safe state.
2365 // Otherwise if either suspender or suspendee blocks for a safepoint
2366 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2367 // the lock without allowing the safepoint to progress.
2368 ThreadBlockInVM tbivm(self);
2369
2370 // We will deadlock here if we are 'suspender' and 'suspendee'
2371 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2372 // at the right place.
2373 while (AtomicAccess::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2374 assert(_emulated_lock == 1, "Must be locked");
2375
2376 // Sleep much longer in suspendee to force situation where
2377 // 'suspender' is waiting above to acquire lock.
2378 os::naked_short_sleep(suspender ? 1 : 10);
2379 }
2380 AtomicAccess::store(&_emulated_lock, 0);
2381 WB_END
2382
2383 // Some convenience methods to deal with objects from java
2384 int WhiteBox::offset_for_field(const char* field_name, oop object,
2385 Symbol* signature_symbol) {
2386 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2387
2388 //Only non-array oops have fields. Don't call this function on arrays!
2389 InstanceKlass* ik = InstanceKlass::cast(object->klass());
2390
2391 //Create symbols to look for in the class
2392 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2393
2394 //To be filled in with an offset of the field we're looking for
2395 fieldDescriptor fd;
2396
2397 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2398 if (res == nullptr) {
2399 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2400 name_symbol->as_C_string());
2401 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2402 }
2403
2404 //fetch the field at the offset we've found
2405 int dest_offset = fd.offset();
2406
2407 return dest_offset;
2408 }
2409
2410
2411 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2412 int offset = offset_for_field(field_name, object,
2413 vmSymbols::string_signature());
2414 oop string = object->obj_field(offset);
2415 if (string == nullptr) {
2416 return nullptr;
2417 }
2418 const char* ret = java_lang_String::as_utf8_string(string);
2419 return ret;
2420 }
2421
2422 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2423 int offset =
2424 offset_for_field(field_name, object, vmSymbols::bool_signature());
2425 bool ret = (object->bool_field(offset) == JNI_TRUE);
2426 return ret;
2427 }
2428
2429 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2430 ResourceMark rm;
2431 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2432 const char* klass_name = klass->external_name();
2433
2434 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2435
2436 // one by one registration natives for exception catching
2437 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2438 CHECK_JNI_EXCEPTION(env);
2439 for (int i = 0, n = method_count; i < n; ++i) {
2440 // Skip dummy entries
2441 if (method_array[i].fnPtr == nullptr) continue;
2442 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2443 jthrowable throwable_obj = env->ExceptionOccurred();
2444 if (throwable_obj != nullptr) {
2445 env->ExceptionClear();
2446 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2447 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2448 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2449 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2450 klass_name, method_array[i].name, method_array[i].signature);
2451 }
2452 } else {
2453 // Registration failed unexpectedly.
2454 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2455 klass_name, method_array[i].name, method_array[i].signature);
2456 env->UnregisterNatives(wbclass);
2457 break;
2458 }
2459 }
2460 }
2461 }
2462
2463 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2464 // can't be in VM when we call JNI
2465 ThreadToNativeFromVM ttnfv(thread);
2466 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2467 CHECK_JNI_EXCEPTION_(env, 0);
2468 int ret;
2469 {
2470 ThreadInVMfromNative ttvfn(thread); // back to VM
2471 ret = DirectivesParser::parse_string(dir, tty);
2472 }
2473 env->ReleaseStringUTFChars(compDirect, dir);
2474 // -1 for error parsing directive. Return 0 as number of directives added.
2475 if (ret == -1) {
2476 ret = 0;
2477 }
2478 return (jint) ret;
2479 WB_END
2480
2481 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2482 DirectivesStack::pop(count);
2483 WB_END
2484
2485 // Checks that the library libfile has the noexecstack bit set.
2486 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2487 jboolean ret = false;
2488 #ifdef LINUX
2489 // Can't be in VM when we call JNI.
2490 ThreadToNativeFromVM ttnfv(thread);
2491 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2492 CHECK_JNI_EXCEPTION_(env, 0);
2493 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2494 env->ReleaseStringUTFChars(libfile, lf);
2495 #endif
2496 return ret;
2497 WB_END
2498
2499 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2500 LINUX_ONLY(return OSContainer::is_containerized();)
2501 return false;
2502 WB_END
2503
2504 // Physical memory of the host machine (including containers)
2505 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2506 LINUX_ONLY(return static_cast<jlong>(os::Linux::physical_memory());)
2507 return static_cast<jlong>(os::physical_memory());
2508 WB_END
2509
2510 // Available memory of the host machine (container-aware)
2511 WB_ENTRY(jlong, WB_HostAvailableMemory(JNIEnv* env, jobject o))
2512 size_t avail_mem = 0;
2513 // Return value ignored - defaulting to 0 on failure.
2514 (void)os::available_memory(avail_mem);
2515 return static_cast<jlong>(avail_mem);
2516 WB_END
2517
2518 // Physical swap of the host machine (including containers), Linux only.
2519 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2520 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2521 return -1; // Not used/implemented on other platforms
2522 WB_END
2523
2524 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2525 jobject o,
2526 jboolean cgroups_v2_enabled,
2527 jstring controllers_file,
2528 jstring proc_self_cgroup,
2529 jstring proc_self_mountinfo))
2530 jint ret = 0;
2531 #ifdef LINUX
2532 ThreadToNativeFromVM ttnfv(thread);
2533 const char* c_file = env->GetStringUTFChars(controllers_file, nullptr);
2534 CHECK_JNI_EXCEPTION_(env, 0);
2535 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2536 CHECK_JNI_EXCEPTION_(env, 0);
2537 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2538 CHECK_JNI_EXCEPTION_(env, 0);
2539 u1 cg_type_flags = 0;
2540 // This sets cg_type_flags
2541 WhiteBox::validate_cgroup(cgroups_v2_enabled, c_file, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2542 ret = (jint)cg_type_flags;
2543 env->ReleaseStringUTFChars(controllers_file, c_file);
2544 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2545 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2546 #endif
2547 return ret;
2548 WB_END
2549
2550 // Available cpus of the host machine, Linux only.
2551 // Used in container testing.
2552 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2553 LINUX_ONLY(return os::Linux::active_processor_count();)
2554 return -1; // Not used/implemented on other platforms
2555 WB_END
2556
2557 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2558 os::print_os_info(tty);
2559 WB_END
2560
2561 // Elf decoder
2562 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2563 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2564 ElfFile::_do_not_cache_elf_section = true;
2565 #endif
2566 WB_END
2567
2568 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2569 return (jlong) ResolvedMethodTable::items_count();
2570 WB_END
2571
2572 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2573 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2574 // Return size in bytes.
2575 return k->size() * wordSize;
2576 WB_END
2577
2578 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2579 // It explains how the thread's priority field is used for test state coordination.
2580 //
2581 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2582 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2583 jlong tid = java_lang_Thread::thread_id(target_oop);
2584 JavaThread* target = java_lang_Thread::thread(target_oop);
2585
2586 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2587 ThreadsListHandle tlh;
2588
2589 // Look up the target thread by tid to ensure it is present
2590 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2591 if (t == nullptr) {
2592 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2593 }
2594
2595 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2596 // Allow target to terminate by boosting priority
2597 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2598
2599 // Now wait for the target to terminate
2600 while (!target->is_terminated()) {
2601 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2602 os::naked_short_sleep(0);
2603 }
2604
2605 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2606
2607 // Now release the GC inducing thread - we have to re-resolve the external oop that
2608 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2609 oop original = JNIHandles::resolve_non_null(target_handle);
2610 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2611
2612 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2613
2614 // The Java code should be creating garbage and triggering GC, which would potentially move
2615 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2616 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2617 // kick in.
2618 for (int i = 0; i < 5; i++) {
2619 oop original = JNIHandles::resolve_non_null(target_handle);
2620 oop current = t->threadObj();
2621 if (original != current) {
2622 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2623 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2624 } else {
2625 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2626 ThreadBlockInVM tbivm(thread);
2627 os::naked_short_sleep(50);
2628 }
2629 }
2630 WB_END
2631
2632 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2633 ResourceMark rm; // for verify
2634 stringStream st;
2635 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2636 frame* current_frame = fst.current();
2637 if (log) {
2638 current_frame->print_value_on(&st);
2639 }
2640 current_frame->verify(fst.register_map());
2641 }
2642 if (log) {
2643 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2644 tty->print_raw(st.freeze());
2645 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2646 }
2647 WB_END
2648
2649 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2650 #if INCLUDE_JVMTI
2651 return JNI_TRUE;
2652 #else
2653 return JNI_FALSE;
2654 #endif
2655 WB_END
2656
2657 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2658 os::naked_short_sleep(time);
2659 WB_END
2660
2661 WB_ENTRY(void, WB_BusyWait(JNIEnv* env, jobject wb, jint time))
2662 ThreadToNativeFromVM ttn(thread);
2663 u8 start = os::current_thread_cpu_time();
2664 u8 target_duration = time * (u8)1000000;
2665 while (os::current_thread_cpu_time() - start < target_duration) {
2666 for (volatile int i = 0; i < 1000000; i++);
2667 }
2668 WB_END
2669
2670 WB_ENTRY(jboolean, WB_CPUSamplerSetOutOfStackWalking(JNIEnv* env, jobject wb, jboolean enable))
2671 #if defined(ASSERT) && INCLUDE_JFR && defined(LINUX)
2672 JfrCPUTimeThreadSampling::set_out_of_stack_walking_enabled(enable == JNI_TRUE);
2673 return JNI_TRUE;
2674 #else
2675 return JNI_FALSE;
2676 #endif
2677 WB_END
2678
2679 WB_ENTRY(jlong, WB_CPUSamplerOutOfStackWalkingIterations(JNIEnv* env, jobject wb))
2680 #if defined(ASSERT) && INCLUDE_JFR && defined(LINUX)
2681 return (jlong)JfrCPUTimeThreadSampling::out_of_stack_walking_iterations();
2682 #else
2683 return 0;
2684 #endif
2685 WB_END
2686
2687 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2688 ThreadToNativeFromVM ttn(thread);
2689 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2690 CHECK_JNI_EXCEPTION_(env, nullptr);
2691 return info_string;
2692 WB_END
2693
2694 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2695 #if INCLUDE_G1GC
2696 if (!UseG1GC) {
2697 ShouldNotReachHere();
2698 return;
2699 }
2700 oop obj = JNIHandles::resolve(o);
2701 G1CollectedHeap::heap()->pin_object(thread, obj);
2702 #else
2703 ShouldNotReachHere();
2704 #endif // INCLUDE_G1GC
2705 WB_END
2706
2707 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2708 #if INCLUDE_G1GC
2709 if (!UseG1GC) {
2710 ShouldNotReachHere();
2711 return;
2712 }
2713 oop obj = JNIHandles::resolve(o);
2714 G1CollectedHeap::heap()->unpin_object(thread, obj);
2715 #else
2716 ShouldNotReachHere();
2717 #endif // INCLUDE_G1GC
2718 WB_END
2719
2720 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2721 if (!Continuations::enabled()) {
2722 tty->print_cr("WB error: must be Continuations::enabled()!");
2723 return JNI_FALSE;
2724 }
2725 jboolean result = false;
2726 #if INCLUDE_JVMTI
2727 if (enable) {
2728 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2729 } else {
2730 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2731 }
2732 #endif
2733 return result;
2734 WB_END
2735
2736 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2737 void* const from = (void*)addr;
2738 void* const to = (void*)(addr + size);
2739 if (from > to) {
2740 os::pretouch_memory(from, to, os::vm_page_size());
2741 }
2742 WB_END
2743
2744 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2745 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2746 WB_END
2747
2748 // Reports resident set size (RSS) in bytes
2749 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2750 return os::rss();
2751 WB_END
2752
2753 WB_ENTRY(void, WB_ControlledCrash(JNIEnv* env, jobject o, jint how))
2754 #ifdef ASSERT
2755 VMError::controlled_crash(how);
2756 #else
2757 THROW_MSG(vmSymbols::java_lang_UnsupportedOperationException(), "Only available in debug builds");
2758 #endif
2759 WB_END
2760
2761 #define CC (char*)
2762
2763 static JNINativeMethod methods[] = {
2764 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2765 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2766 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2767 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2768 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2769 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2770 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2771 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2772 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2773 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2774 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2775 {CC"parseCommandLine0",
2776 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2777 (void*) &WB_ParseCommandLine
2778 },
2779 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2780 (void*)&WB_AddToBootstrapClassLoaderSearch},
2781 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2782 (void*)&WB_AddToSystemClassLoaderSearch},
2783 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2784 (void*)&WB_GetCompressedOopsMaxHeapSize},
2785 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2786 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2787 {CC"decodeNKlassAndAccessKlass",CC"(I)V", (void*)&WB_DecodeNKlassAndAccessKlass},
2788 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2789 #if INCLUDE_CDS
2790 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2791 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2792 #endif
2793 #if INCLUDE_G1GC
2794 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2795 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2796 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2797 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2798 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2799 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2800 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2801 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2802 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2803 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2804 (void*)&WB_G1AuxiliaryMemoryUsage },
2805 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2806 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2807 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2808 #endif // INCLUDE_G1GC
2809 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2810 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2811 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2812 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2813 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2814 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2815 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2816 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2817 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2818 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2819 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2820 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2821 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2822 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2823 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2824 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2825 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2826 (void*)&WB_DeoptimizeMethod },
2827 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2828 (void*)&WB_IsMethodCompiled },
2829 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2830 (void*)&WB_IsMethodCompilable},
2831 {CC"isMethodQueuedForCompilation0",
2832 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2833 {CC"isIntrinsicAvailable0",
2834 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2835 (void*)&WB_IsIntrinsicAvailable},
2836 {CC"makeMethodNotCompilable0",
2837 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2838 {CC"testSetDontInlineMethod0",
2839 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2840 {CC"getMethodCompilationLevel0",
2841 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2842 {CC"getMethodDecompileCount0",
2843 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2844 {CC"getMethodTrapCount0",
2845 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2846 (void*)&WB_GetMethodTrapCount},
2847 {CC"getDeoptCount0",
2848 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2849 {CC"getMethodEntryBci0",
2850 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2851 {CC"getCompileQueueSize",
2852 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2853 {CC"testSetForceInlineMethod0",
2854 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2855 {CC"enqueueMethodForCompilation0",
2856 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2857 {CC"enqueueInitializerForCompilation0",
2858 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2859 {CC"markMethodProfiled",
2860 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2861 {CC"clearMethodState0",
2862 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2863 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2864 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2865 {CC"matchesMethod",
2866 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2867 (void*)&WB_MatchesMethod},
2868 {CC"matchesInline",
2869 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2870 (void*)&WB_MatchesInline},
2871 {CC"shouldPrintAssembly",
2872 CC"(Ljava/lang/reflect/Executable;I)Z",
2873 (void*)&WB_ShouldPrintAssembly},
2874
2875 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2876 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2877 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2878 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2879 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2880 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2881 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2882 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2883 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2884 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2885 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2886 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2887 (void*)&WB_SetStringVMFlag},
2888 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2889 (void*)&WB_GetBooleanVMFlag},
2890 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2891 (void*)&WB_GetIntVMFlag},
2892 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2893 (void*)&WB_GetUintVMFlag},
2894 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2895 (void*)&WB_GetIntxVMFlag},
2896 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2897 (void*)&WB_GetUintxVMFlag},
2898 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2899 (void*)&WB_GetUint64VMFlag},
2900 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2901 (void*)&WB_GetSizeTVMFlag},
2902 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2903 (void*)&WB_GetDoubleVMFlag},
2904 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2905 (void*)&WB_GetStringVMFlag},
2906 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2907 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2908 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2909 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2910 {CC"allocateMetaspace",
2911 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2912 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2913 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2914 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_AOTMetaspaceRegionAlignment },
2915 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2916 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2917 (void*)&WB_GetNMethod },
2918 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2919 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2920 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2921 {CC"getCompilationActivityMode",
2922 CC"()I", (void*)&WB_GetCompilationActivityMode},
2923 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2924 (void*)&WB_GetMethodData },
2925 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2926 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2927 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2928 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2929 (void*)&WB_DefineModule },
2930 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2931 (void*)&WB_AddModuleExports },
2932 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2933 (void*)&WB_AddReadsModule },
2934 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2935 (void*)&WB_AddModuleExportsToAllUnnamed },
2936 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2937 (void*)&WB_AddModuleExportsToAll },
2938 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2939 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2940 {CC"isAsanEnabled", CC"()Z", (void*)&WB_IsAsanEnabled },
2941 {CC"isUbsanEnabled", CC"()Z", (void*)&WB_IsUbsanEnabled },
2942 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
2943 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2944 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2945 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2946 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2947 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2948 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2949 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2950 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2951 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2952 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2953 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2954 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2955 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2956 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2957 {CC"getMethodBooleanOption",
2958 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2959 (void*)&WB_GetMethodBooleaneOption},
2960 {CC"getMethodIntxOption",
2961 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2962 (void*)&WB_GetMethodIntxOption},
2963 {CC"getMethodUintxOption",
2964 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2965 (void*)&WB_GetMethodUintxOption},
2966 {CC"getMethodDoubleOption",
2967 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2968 (void*)&WB_GetMethodDoubleOption},
2969 {CC"getMethodStringOption",
2970 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2971 (void*)&WB_GetMethodStringOption},
2972 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2973 (void*)&WB_GetDefaultArchivePath},
2974 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2975 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2976 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2977 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2978 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2979 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2980 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2981 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2982 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2983 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2984 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2985 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2986 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2987 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2988 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2989 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2990
2991 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2992 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2993 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2994 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2995 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2996 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2997 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2998 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2999 (void*)&WB_AddCompilerDirective },
3000 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
3001 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
3002 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
3003 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
3004 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
3005 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
3006 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
3007 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
3008 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
3009 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
3010 (void*)&WB_ConcurrentGCRunTo},
3011 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
3012 (void*)&WB_CheckLibSpecifiesNoexecstack},
3013 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
3014 {CC"validateCgroup",
3015 CC"(ZLjava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
3016 (void*)&WB_ValidateCgroup },
3017 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
3018 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
3019 {CC"hostAvailableMemory", CC"()J", (void*)&WB_HostAvailableMemory },
3020 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
3021 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
3022 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
3023 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
3024 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
3025
3026 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
3027 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
3028 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
3029 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
3030 {CC"getTotalCommittedBytesInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedBytesInMetaspaceTestContext},
3031 {CC"getTotalUsedBytesInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedBytesInMetaspaceTestContext},
3032 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
3033 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
3034 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
3035 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
3036 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
3037
3038 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
3039 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
3040 {CC"busyWait", CC"(I)V", (void*)&WB_BusyWait},
3041 {CC"cpuSamplerSetOutOfStackWalking", CC"(Z)Z", (void*)&WB_CPUSamplerSetOutOfStackWalking},
3042 {CC"cpuSamplerOutOfStackWalkingIterations", CC"()J",(void*)&WB_CPUSamplerOutOfStackWalkingIterations},
3043 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
3044
3045 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
3046 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
3047 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
3048 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
3049 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
3050 {CC"rss", CC"()J", (void*)&WB_Rss},
3051 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString},
3052 {CC"lockAndStuckInSafepoint", CC"()V", (void*)&WB_TakeLockAndHangInSafepoint},
3053 {CC"wordSize", CC"()J", (void*)&WB_WordSize},
3054 {CC"rootChunkWordSize", CC"()J", (void*)&WB_RootChunkWordSize},
3055 {CC"isStatic", CC"()Z", (void*)&WB_IsStaticallyLinked},
3056 {CC"controlledCrash",CC"(I)V", (void*)&WB_ControlledCrash},
3057 };
3058
3059 #undef CC
3060
3061 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
3062 {
3063 if (WhiteBoxAPI) {
3064 // Make sure that wbclass is loaded by the null classloader
3065 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(wbclass));
3066 Handle loader(THREAD, ik->class_loader());
3067 if (loader.is_null()) {
3068 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
3069 WhiteBox::set_used();
3070 }
3071 }
3072 }
3073 JVM_END