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/archiveHeapLoader.hpp"
27 #include "cds/cdsConstants.hpp"
28 #include "cds/filemap.hpp"
29 #include "cds/heapShared.hpp"
30 #include "cds/metaspaceShared.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 "jvm.h"
50 #include "jvmtifiles/jvmtiEnv.hpp"
51 #include "logging/log.hpp"
52 #include "memory/iterator.hpp"
53 #include "memory/memoryReserver.hpp"
54 #include "memory/metadataFactory.hpp"
55 #include "memory/metaspace/testHelpers.hpp"
56 #include "memory/metaspaceUtils.hpp"
57 #include "memory/oopFactory.hpp"
58 #include "memory/resourceArea.hpp"
59 #include "memory/universe.hpp"
60 #include "nmt/mallocSiteTable.hpp"
61 #include "oops/array.hpp"
62 #include "oops/compressedOops.hpp"
63 #include "oops/constantPool.inline.hpp"
64 #include "oops/klass.inline.hpp"
65 #include "oops/method.inline.hpp"
66 #include "oops/methodData.inline.hpp"
67 #include "oops/objArrayKlass.hpp"
68 #include "oops/objArrayOop.inline.hpp"
69 #include "oops/oop.inline.hpp"
70 #include "oops/typeArrayOop.inline.hpp"
71 #include "prims/jvmtiEnvBase.hpp"
72 #include "prims/resolvedMethodTable.hpp"
73 #include "prims/wbtestmethods/parserTests.hpp"
74 #include "prims/whitebox.inline.hpp"
75 #include "runtime/arguments.hpp"
76 #include "runtime/atomic.hpp"
77 #include "runtime/deoptimization.hpp"
78 #include "runtime/fieldDescriptor.inline.hpp"
79 #include "runtime/flags/jvmFlag.hpp"
80 #include "runtime/flags/jvmFlagAccess.hpp"
81 #include "runtime/frame.inline.hpp"
82 #include "runtime/handles.inline.hpp"
83 #include "runtime/handshake.hpp"
84 #include "runtime/interfaceSupport.inline.hpp"
85 #include "runtime/javaCalls.hpp"
86 #include "runtime/javaThread.inline.hpp"
87 #include "runtime/jniHandles.inline.hpp"
88 #include "runtime/lockStack.hpp"
89 #include "runtime/os.hpp"
90 #include "runtime/stackFrameStream.inline.hpp"
91 #include "runtime/synchronizer.hpp"
92 #include "runtime/threadSMR.hpp"
93 #include "runtime/vframe.hpp"
94 #include "runtime/vm_version.hpp"
95 #include "services/memoryService.hpp"
96 #include "utilities/align.hpp"
97 #include "utilities/checkedCast.hpp"
98 #include "utilities/debug.hpp"
99 #include "utilities/elfFile.hpp"
100 #include "utilities/exceptions.hpp"
101 #include "utilities/macros.hpp"
102 #include "utilities/nativeCallStack.hpp"
103 #include "utilities/ostream.hpp"
104 #if INCLUDE_G1GC
105 #include "gc/g1/g1Arguments.hpp"
106 #include "gc/g1/g1CollectedHeap.inline.hpp"
107 #include "gc/g1/g1ConcurrentMark.hpp"
108 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
109 #include "gc/g1/g1HeapRegionManager.hpp"
110 #include "gc/g1/g1HeapRegionRemSet.inline.hpp"
111 #endif // INCLUDE_G1GC
112 #if INCLUDE_PARALLELGC
113 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
114 #endif // INCLUDE_PARALLELGC
115 #if INCLUDE_SERIALGC
116 #include "gc/serial/serialHeap.hpp"
117 #endif // INCLUDE_SERIALGC
118 #if INCLUDE_ZGC
119 #include "gc/z/zAddress.inline.hpp"
120 #endif // INCLUDE_ZGC
121 #if INCLUDE_JVMCI
122 #include "jvmci/jvmciEnv.hpp"
123 #include "jvmci/jvmciRuntime.hpp"
124 #endif
125 #ifdef LINUX
126 #include "cgroupSubsystem_linux.hpp"
127 #include "osContainer_linux.hpp"
128 #include "os_linux.hpp"
129 #endif
130
131 #define CHECK_JNI_EXCEPTION_(env, value) \
132 do { \
133 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
134 THREAD->clear_pending_jni_exception_check(); \
135 if (HAS_PENDING_EXCEPTION) { \
136 return(value); \
137 } \
138 } while (0)
139
140 #define CHECK_JNI_EXCEPTION(env) \
141 do { \
142 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
143 THREAD->clear_pending_jni_exception_check(); \
144 if (HAS_PENDING_EXCEPTION) { \
145 return; \
146 } \
147 } while (0)
148
149 bool WhiteBox::_used = false;
150 volatile bool WhiteBox::compilation_locked = false;
151
152 class VM_WhiteBoxOperation : public VM_Operation {
153 public:
154 VM_WhiteBoxOperation() { }
155 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
156 bool allow_nested_vm_operations() const { return true; }
157 };
158
159
160 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
161 return (jlong)(void*)JNIHandles::resolve(obj);
162 WB_END
163
164 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
165 return heapOopSize;
166 WB_END
167
168 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
169 return (jint)os::vm_page_size();
170 WB_END
171
172 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
173 return os::vm_allocation_granularity();
174 WB_END
175
176 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
177 return os::large_page_size();
178 WB_END
179
180 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length))
181 ResourceMark rm(THREAD);
182 stringStream sb;
183 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length);
184 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD);
185 return (jstring) JNIHandles::make_local(THREAD, result);
186 WB_END
187
188 WB_ENTRY(jint, WB_TakeLockAndHangInSafepoint(JNIEnv* env, jobject wb))
189 JavaThread* self = JavaThread::current();
190 // VMStatistic_lock is used to minimize interference with VM locking
191 MutexLocker mu(VMStatistic_lock);
192 VM_HangInSafepoint force_safepoint_stuck_op;
193 VMThread::execute(&force_safepoint_stuck_op);
194 ShouldNotReachHere();
195 return 0;
196 WB_END
197
198 class WBIsKlassAliveClosure : public LockedClassesDo {
199 Symbol* _name;
200 int _count;
201 public:
202 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
203
204 void do_klass(Klass* k) {
205 Symbol* ksym = k->name();
206 if (ksym->fast_compare(_name) == 0) {
207 _count++;
208 } else if (k->is_instance_klass()) {
209 // Need special handling for hidden classes because the JVM
210 // appends "+<hex-address>" to hidden class names.
211 InstanceKlass *ik = InstanceKlass::cast(k);
212 if (ik->is_hidden()) {
213 ResourceMark rm;
214 char* k_name = ksym->as_C_string();
215 // Find the first '+' char and truncate the string at that point.
216 // NOTE: This will not work correctly if the original hidden class
217 // name contains a '+'.
218 char* plus_char = strchr(k_name, '+');
219 if (plus_char != nullptr) {
220 *plus_char = 0;
221 char* c_name = _name->as_C_string();
222 if (strcmp(c_name, k_name) == 0) {
223 _count++;
224 }
225 }
226 }
227 }
228 }
229
230 int count() const {
231 return _count;
232 }
233 };
234
235 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
236 oop h_name = JNIHandles::resolve(name);
237 if (h_name == nullptr) {
238 return 0;
239 }
240 Symbol* sym = java_lang_String::as_symbol(h_name);
241 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
242
243 WBIsKlassAliveClosure closure(sym);
244 ClassLoaderDataGraph::classes_do(&closure);
245
246 // Return the count of alive classes with this name.
247 return closure.count();
248 WB_END
249
250 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
251 oop h_name = JNIHandles::resolve(name);
252 if (h_name == nullptr) {
253 return 0;
254 }
255 Symbol* sym = java_lang_String::as_symbol(h_name);
256 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
257 return (jint)sym->refcount();
258 WB_END
259
260
261 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
262 #if INCLUDE_JVMTI
263 ResourceMark rm;
264 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
265 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
266 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
267 assert(err == JVMTI_ERROR_NONE, "must not fail");
268 #endif
269 }
270 WB_END
271
272 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
273 #if INCLUDE_JVMTI
274 ResourceMark rm;
275 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
276 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
277 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
278 assert(err == JVMTI_ERROR_NONE, "must not fail");
279 #endif
280 }
281 WB_END
282
283
284 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
285 return (jlong)Arguments::max_heap_for_compressed_oops();
286 }
287 WB_END
288
289 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
290 tty->print_cr("Minimum heap %zu Initial heap %zu "
291 "Maximum heap %zu Space alignment %zu Heap alignment %zu",
292 MinHeapSize,
293 InitialHeapSize,
294 MaxHeapSize,
295 SpaceAlignment,
296 HeapAlignment);
297 }
298 WB_END
299
300 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
301 size_t granularity = os::vm_allocation_granularity();
302 ReservedHeapSpace rhs = HeapReserver::reserve(100 * granularity, granularity, os::vm_page_size(), nullptr);
303
304 // Check if constraints are complied
305 if (!( UseCompressedOops && rhs.is_reserved() &&
306 CompressedOops::base() != nullptr &&
307 CompressedOops::use_implicit_null_checks() )) {
308 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
309 "\tUseCompressedOops is %d\n"
310 "\trhs.base() is " PTR_FORMAT "\n"
311 "\tCompressedOops::base() is " PTR_FORMAT "\n"
312 "\tCompressedOops::use_implicit_null_checks() is %d",
313 UseCompressedOops,
314 p2i(rhs.base()),
315 p2i(CompressedOops::base()),
316 CompressedOops::use_implicit_null_checks());
317 return;
318 }
319
320 VirtualSpace vs;
321 vs.initialize(rhs, 50 * granularity);
322
323 tty->print_cr("Reading from no access area... ");
324 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
325 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
326 WB_END
327
328 WB_ENTRY(void, WB_DecodeNKlassAndAccessKlass(JNIEnv* env, jobject o, jint nKlass))
329 assert(UseCompressedClassPointers, "Should only call for UseCompressedClassPointers");
330 const narrowKlass nk = (narrowKlass)nKlass;
331 const Klass* const k = CompressedKlassPointers::decode_not_null_without_asserts(nKlass);
332 printf("WB_DecodeNKlassAndAccessKlass: nk %u k " PTR_FORMAT "\n", nk, p2i(k));
333 printf("Will attempt to crash now...\n");
334 fflush(stdout); // flush now - we will crash below
335 // Access k by calling a virtual function - will result in loading the vtable from *k
336 k->print_on(tty);
337 WB_END
338
339 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
340 size_t magnitude, size_t iterations) {
341 size_t granularity = os::vm_allocation_granularity();
342 ReservedHeapSpace rhs = HeapReserver::reserve(reserved_space_size * granularity, granularity, os::vm_page_size(), nullptr);
343 if (!rhs.is_reserved()) {
344 tty->print_cr("Failed to initialize ReservedSpace. Can't proceed.");
345 return 3;
346 }
347
348 VirtualSpace vs;
349 if (!vs.initialize(rhs, 0)) {
350 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
351 return 3;
352 }
353
354 int seed = os::random();
355 tty->print_cr("Random seed is %d", seed);
356
357 for (size_t i = 0; i < iterations; i++) {
358
359 // Whether we will shrink or grow
360 bool shrink = os::random() % 2L == 0;
361
362 // Get random delta to resize virtual space
363 size_t delta = (size_t)os::random() % magnitude;
364
365 // If we are about to shrink virtual space below zero, then expand instead
366 if (shrink && vs.committed_size() < delta) {
367 shrink = false;
368 }
369
370 // Resizing by delta
371 if (shrink) {
372 vs.shrink_by(delta);
373 } else {
374 // If expanding fails expand_by will silently return false
375 vs.expand_by(delta, true);
376 }
377 }
378 return 0;
379 }
380
381 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
382 jlong reserved_space_size, jlong magnitude, jlong iterations))
383 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
384 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
385 iterations);
386 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
387 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
388 return 1;
389 }
390
391 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
392 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
393 if (sizeof(size_t) < sizeof(jlong)) {
394 jlong size_t_max_value = (jlong)SIZE_MAX;
395 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
396 || iterations > size_t_max_value) {
397 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
398 return 2;
399 }
400 }
401
402 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
403 (size_t) magnitude, (size_t) iterations);
404 WB_END
405
406 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
407 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
408 WB_END
409
410 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
411 #if INCLUDE_JVMCI
412 return JVMCI::shared_library_exists();
413 #endif
414 return false;
415 WB_END
416
417 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
418 #if INCLUDE_JVMCI
419 if (EnableJVMCI) {
420 // Enter the JVMCI env that will be used by the CompileBroker.
421 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
422 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
423 }
424 #endif
425 return false;
426 WB_END
427
428 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
429 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
430 WB_END
431
432 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
433 return GCConfig::is_gc_selected_ergonomically();
434 WB_END
435
436 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
437 oop p = JNIHandles::resolve(obj);
438 #if INCLUDE_G1GC
439 if (UseG1GC) {
440 G1CollectedHeap* g1h = G1CollectedHeap::heap();
441 const G1HeapRegion* hr = g1h->heap_region_containing(p);
442 return hr->is_old_or_humongous();
443 }
444 #endif
445 #if INCLUDE_PARALLELGC
446 if (UseParallelGC) {
447 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
448 return !psh->is_in_young(p);
449 }
450 #endif
451 #if INCLUDE_ZGC
452 if (UseZGC) {
453 return ZHeap::heap()->is_old(to_zaddress(p));
454 }
455 #endif
456 #if INCLUDE_SHENANDOAHGC
457 if (UseShenandoahGC) {
458 ShenandoahHeap* sh = ShenandoahHeap::heap();
459 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
460 }
461 #endif
462 #if INCLUDE_SERIALGC
463 if (UseSerialGC) {
464 return !SerialHeap::heap()->is_in_young(p);
465 }
466 #endif
467 ShouldNotReachHere();
468 return false;
469 WB_END
470
471 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
472 oop p = JNIHandles::resolve(obj);
473 return p->size() * HeapWordSize;
474 WB_END
475
476 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
477 return (jlong)SpaceAlignment;
478 WB_END
479
480 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
481 return (jlong)HeapAlignment;
482 WB_END
483
484 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
485 return Universe::heap()->supports_concurrent_gc_breakpoints();
486 WB_END
487
488 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
489 ConcurrentGCBreakpoints::acquire_control();
490 WB_END
491
492 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
493 ConcurrentGCBreakpoints::release_control();
494 WB_END
495
496 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
497 ConcurrentGCBreakpoints::run_to_idle();
498 WB_END
499
500 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
501 Handle h_name(THREAD, JNIHandles::resolve(at));
502 ResourceMark rm;
503 const char* c_name = java_lang_String::as_utf8_string(h_name());
504 return ConcurrentGCBreakpoints::run_to(c_name);
505 WB_END
506
507 #if INCLUDE_G1GC
508
509 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
510 if (UseG1GC) {
511 G1CollectedHeap* g1h = G1CollectedHeap::heap();
512 oop result = JNIHandles::resolve(obj);
513 const G1HeapRegion* hr = g1h->heap_region_containing(result);
514 return hr->is_humongous();
515 }
516 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
517 WB_END
518
519 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
520 if (UseG1GC) {
521 G1CollectedHeap* g1h = G1CollectedHeap::heap();
522 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
523 return hr->is_humongous();
524 }
525 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
526 WB_END
527
528 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
529 if (UseG1GC) {
530 G1CollectedHeap* g1h = G1CollectedHeap::heap();
531 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
532 return hr->is_free();
533 }
534 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
535 WB_END
536
537 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
538 if (UseG1GC) {
539 G1CollectedHeap* g1h = G1CollectedHeap::heap();
540 size_t nr = g1h->max_regions();
541 return (jlong)nr;
542 }
543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
544 WB_END
545
546 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
547 if (UseG1GC) {
548 G1CollectedHeap* g1h = G1CollectedHeap::heap();
549 size_t nr = g1h->num_free_regions();
550 return (jlong)nr;
551 }
552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
553 WB_END
554
555 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
556 if (UseG1GC) {
557 G1CollectedHeap* g1h = G1CollectedHeap::heap();
558 return g1h->concurrent_mark()->cm_thread()->in_progress();
559 }
560 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
561 WB_END
562
563 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
564 if (UseG1GC) {
565 G1CollectedHeap* g1h = G1CollectedHeap::heap();
566 G1ConcurrentMark* cm = g1h->concurrent_mark();
567 return cm->completed_mark_cycles();
568 }
569 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
570 WB_END
571
572 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
573 if (UseG1GC) {
574 return (jint)G1HeapRegion::GrainBytes;
575 }
576 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
577 WB_END
578
579 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
580 if (UseG1GC) {
581 return G1CollectedHeap::heap()->has_uncommittable_regions();
582 }
583 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
584 WB_END
585
586 #endif // INCLUDE_G1GC
587
588 #if INCLUDE_PARALLELGC
589
590 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
591 if (UseParallelGC) {
592 return GenAlignment;
593 }
594 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
595 WB_END
596
597 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
598 if (UseParallelGC) {
599 return GenAlignment;
600 }
601 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
602 WB_END
603
604 #endif // INCLUDE_PARALLELGC
605
606 #if INCLUDE_G1GC
607
608 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
609 if (UseG1GC) {
610 ResourceMark rm(THREAD);
611 G1CollectedHeap* g1h = G1CollectedHeap::heap();
612 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
613 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
614 return JNIHandles::make_local(THREAD, h());
615 }
616 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
617 WB_END
618
619 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
620 if (UseG1GC) {
621 G1NUMA* numa = G1NUMA::numa();
622 return (jint)numa->num_active_nodes();
623 }
624 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
625 WB_END
626
627 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
628 if (UseG1GC) {
629 G1NUMA* numa = G1NUMA::numa();
630 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
631 const uint* node_ids = numa->node_ids();
632
633 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
634 for (int i = 0; i < num_node_ids; i++) {
635 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
636 }
637 return (jintArray) JNIHandles::make_local(THREAD, result);
638 }
639 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
640 WB_END
641
642 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
643
644 private:
645 const int _liveness;
646 size_t _total_count;
647 size_t _total_memory;
648 size_t _total_memory_to_free;
649
650 public:
651 OldRegionsLivenessClosure(int liveness) :
652 _liveness(liveness),
653 _total_count(0),
654 _total_memory(0),
655 _total_memory_to_free(0) { }
656
657 size_t total_count() { return _total_count; }
658 size_t total_memory() { return _total_memory; }
659 size_t total_memory_to_free() { return _total_memory_to_free; }
660
661 bool do_heap_region(G1HeapRegion* r) {
662 if (r->is_old()) {
663 size_t live = r->live_bytes();
664 size_t size = r->used();
665 size_t reg_size = G1HeapRegion::GrainBytes;
666 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
667 _total_memory += size;
668 ++_total_count;
669 if (size == reg_size) {
670 // We don't include non-full regions since they are unlikely included in mixed gc
671 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
672 _total_memory_to_free += size - live;
673 }
674 }
675 }
676 return false;
677 }
678 };
679
680
681 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
682 if (!UseG1GC) {
683 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
684 }
685 if (liveness < 0) {
686 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
687 }
688
689 G1CollectedHeap* g1h = G1CollectedHeap::heap();
690 OldRegionsLivenessClosure rli(liveness);
691 g1h->heap_region_iterate(&rli);
692
693 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
694 result->long_at_put(0, rli.total_count());
695 result->long_at_put(1, rli.total_memory());
696 result->long_at_put(2, rli.total_memory_to_free());
697 return (jlongArray) JNIHandles::make_local(THREAD, result);
698 WB_END
699
700 #endif // INCLUDE_G1GC
701
702 // Alloc memory using the test memory tag so that we can use that to see if
703 // NMT picks it up correctly
704 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
705 jlong addr = 0;
706 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
707 return addr;
708 WB_END
709
710 // Alloc memory with pseudo call stack. The test can create pseudo malloc
711 // allocation site to stress the malloc tracking.
712 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
713 address pc = (address)(size_t)pseudo_stack;
714 NativeCallStack stack(&pc, 1);
715 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
716 WB_END
717
718 // Alloc memory with pseudo call stack and specific memory tag.
719 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag))
720 address pc = (address)(size_t)pseudo_stack;
721 NativeCallStack stack(&pc, 1);
722 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack);
723 WB_END
724
725 // Free the memory allocated by NMTAllocTest
726 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
727 os::free((void*)(uintptr_t)mem);
728 WB_END
729
730 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
731 return (jlong)(uintptr_t)os::reserve_memory(size, false, mtTest);
732 WB_END
733
734 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
735 return (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size, false, mtTest);
736 WB_END
737
738 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
739 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
740 WB_END
741
742 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
743 os::uncommit_memory((char *)(uintptr_t)addr, size);
744 WB_END
745
746 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
747 os::release_memory((char *)(uintptr_t)addr, size);
748 WB_END
749
750 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
751 int hash_size = MallocSiteTable::hash_buckets();
752 assert(hash_size > 0, "NMT hash_size should be > 0");
753 return (jint)hash_size;
754 WB_END
755
756 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
757 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
758 return (jlong)arena;
759 WB_END
760
761 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
762 Arena* a = (Arena*)arena;
763 delete a;
764 WB_END
765
766 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
767 Arena* a = (Arena*)arena;
768 a->Amalloc(size_t(size));
769 WB_END
770
771 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
772 assert(method != nullptr, "method should not be null");
773 ThreadToNativeFromVM ttn(thread);
774 return env->FromReflectedMethod(method);
775 }
776
777 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
778 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
779 private:
780 int _result;
781 const bool _make_not_entrant;
782 public:
783 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
784 _result(0), _make_not_entrant(make_not_entrant) { }
785 int result() const { return _result; }
786
787 void doit() {
788 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
789 if (t->has_last_Java_frame()) {
790 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
791 frame* f = fst.current();
792 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
793 Deoptimization::deoptimize(t, *f);
794 if (_make_not_entrant) {
795 nmethod* nm = CodeCache::find_nmethod(f->pc());
796 assert(nm != nullptr, "did not find nmethod");
797 nm->make_not_entrant("Whitebox deoptimization");
798 }
799 ++_result;
800 }
801 }
802 }
803 }
804 }
805 };
806
807 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
808 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
809 VMThread::execute(&op);
810 return op.result();
811 WB_END
812
813 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
814 bool result = false;
815 if (thread->has_last_Java_frame()) {
816 ResourceMark rm(THREAD);
817 RegisterMap reg_map(thread,
818 RegisterMap::UpdateMap::include,
819 RegisterMap::ProcessFrames::include,
820 RegisterMap::WalkContinuation::skip);
821 javaVFrame *jvf = thread->last_java_vframe(®_map);
822 for (jint d = 0; d < depth && jvf != nullptr; d++) {
823 jvf = jvf->java_sender();
824 }
825 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
826 }
827 return result;
828 WB_END
829
830 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
831 DeoptimizationScope deopt_scope;
832 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
833 deopt_scope.deoptimize_marked();
834 WB_END
835
836 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
837 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
838 int result = 0;
839 CHECK_JNI_EXCEPTION_(env, result);
840
841 DeoptimizationScope deopt_scope;
842 {
843 MutexLocker mu(Compile_lock);
844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
845 if (is_osr) {
846 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
847 } else {
848 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
849 if (mh->code() != nullptr) {
850 deopt_scope.mark(mh->code());
851 ++result;
852 }
853 }
854 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
855 }
856
857 deopt_scope.deoptimize_marked();
858
859 return result;
860 WB_END
861
862 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
863 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
864 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
865 MutexLocker mu(Compile_lock);
866 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
867 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
868 if (code == nullptr) {
869 return JNI_FALSE;
870 }
871 return !code->is_marked_for_deoptimization();
872 WB_END
873
874 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
875 if (comp == nullptr) {
876 return true;
877 }
878 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
879 bool exclude = directive->ExcludeOption;
880 DirectivesStack::release(directive);
881 return exclude;
882 }
883
884 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
885 if (is_osr) {
886 return CompilationPolicy::can_be_osr_compiled(mh, level);
887 } else {
888 return CompilationPolicy::can_be_compiled(mh, level);
889 }
890 }
891
892 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
893 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
894 return false;
895 }
896 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
898 MutexLocker mu(Compile_lock);
899 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
900
901 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
902 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
903 // to exclude a compilation of 'method'.
904 if (comp_level == CompLevel_any) {
905 // Both compilers could have ExcludeOption set. Check all combinations.
906 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
907 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
908 if (excluded_c1 && excluded_c2) {
909 // Compilation of 'method' excluded by both compilers.
910 return false;
911 }
912
913 if (excluded_c1) {
914 // C1 only has ExcludeOption set: Check if compilable with C2.
915 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
916 } else if (excluded_c2) {
917 // C2 only has ExcludeOption set: Check if compilable with C1.
918 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
919 }
920 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
921 // Compilation of 'method' excluded by compiler used for 'comp_level'.
922 return false;
923 }
924
925 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
926 WB_END
927
928 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
929 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
931 MutexLocker mu(Compile_lock);
932 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
933 return mh->queued_for_compilation();
934 WB_END
935
936 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
937 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
938 return false; // Intrinsic is not available on a non-existent compilation level.
939 }
940 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
941 if (comp == nullptr) {
942 // Could have compLevel == 0, or !TieredCompilation and incompatible values of TieredStopAtLevel and compLevel.
943 tty->print_cr("WB error: no compiler for requested compilation level %d", compLevel);
944 return false;
945 }
946
947 jmethodID method_id, compilation_context_id;
948 method_id = reflected_method_to_jmid(thread, env, method);
949 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
951
952 DirectiveSet* directive;
953 if (compilation_context != nullptr) {
954 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
955 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
956 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
957 directive = DirectivesStack::getMatchingDirective(cch, comp);
958 } else {
959 // Calling with null matches default directive
960 directive = DirectivesStack::getDefaultDirective(comp);
961 }
962 bool result = comp->is_intrinsic_available(mh, directive);
963 DirectivesStack::release(directive);
964 return result;
965 WB_END
966
967 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
968 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
969 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
970 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
971 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
972 return (code != nullptr ? code->comp_level() : CompLevel_none);
973 WB_END
974
975 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
976 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
977 CHECK_JNI_EXCEPTION(env);
978 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
979 if (is_osr) {
980 mh->set_not_osr_compilable("WhiteBox", comp_level);
981 } else {
982 mh->set_not_compilable("WhiteBox", comp_level);
983 }
984 WB_END
985
986 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
987 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
988 CHECK_JNI_EXCEPTION_(env, 0);
989 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
990 uint cnt = 0;
991 MethodData* mdo = mh->method_data();
992 if (mdo != nullptr) {
993 cnt = mdo->decompile_count();
994 }
995 return cnt;
996 WB_END
997
998 // Get the trap count of a method for a specific reason. If the trap count for
999 // that reason did overflow, this includes the overflow trap count of the method.
1000 // If 'reason' is null, the sum of the traps for all reasons will be returned.
1001 // This number includes the overflow trap count if the trap count for any reason
1002 // did overflow.
1003 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
1004 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1005 CHECK_JNI_EXCEPTION_(env, 0);
1006 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1007 uint cnt = 0;
1008 MethodData* mdo = mh->method_data();
1009 if (mdo != nullptr) {
1010 ResourceMark rm(THREAD);
1011 char* reason_str = (reason_obj == nullptr) ?
1012 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1013 bool overflow = false;
1014 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
1015 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
1016 cnt = mdo->trap_count(reason);
1017 // Count in the overflow trap count on overflow
1018 if (cnt == (uint)-1) {
1019 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
1020 }
1021 break;
1022 } else if (reason_str == nullptr) {
1023 uint c = mdo->trap_count(reason);
1024 if (c == (uint)-1) {
1025 c = mdo->trap_count_limit();
1026 if (!overflow) {
1027 // Count overflow trap count just once
1028 overflow = true;
1029 c += mdo->overflow_trap_count();
1030 }
1031 }
1032 cnt += c;
1033 }
1034 }
1035 }
1036 return cnt;
1037 WB_END
1038
1039 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1040 if (reason_obj == nullptr && action_obj == nullptr) {
1041 return Deoptimization::total_deoptimization_count();
1042 }
1043 ResourceMark rm(THREAD);
1044 const char *reason_str = (reason_obj == nullptr) ?
1045 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1046 const char *action_str = (action_obj == nullptr) ?
1047 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1048
1049 return Deoptimization::deoptimization_count(reason_str, action_str);
1050 WB_END
1051
1052 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1053 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1054 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1055 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1056 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1057 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1058 WB_END
1059
1060 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1061 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1062 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1063 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1064 bool result = mh->dont_inline();
1065 mh->set_dont_inline(value == JNI_TRUE);
1066 return result;
1067 WB_END
1068
1069 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1070 if (comp_level == CompLevel_any) {
1071 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1072 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1073 } else {
1074 return CompileBroker::queue_size(comp_level);
1075 }
1076 WB_END
1077
1078 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1079 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1080 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1081 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1082 bool result = mh->force_inline();
1083 mh->set_force_inline(value == JNI_TRUE);
1084 return result;
1085 WB_END
1086
1087 #ifdef LINUX
1088 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1089 const char* proc_self_cgroup,
1090 const char* proc_self_mountinfo,
1091 u1* cg_flags) {
1092 CgroupInfo cg_infos[CG_INFO_LENGTH];
1093 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1094 proc_self_cgroup,
1095 proc_self_mountinfo, cg_flags);
1096 }
1097 #endif
1098
1099 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1100 // Screen for unavailable/bad comp level or null method
1101 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1102 if (method == nullptr) {
1103 tty->print_cr("WB error: request to compile null method");
1104 return false;
1105 }
1106 if (method->is_abstract()) {
1107 tty->print_cr("WB error: request to compile abstract method");
1108 return false;
1109 }
1110 if (comp_level > CompilationPolicy::highest_compile_level()) {
1111 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1112 return false;
1113 }
1114 if (comp == nullptr) {
1115 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1116 return false;
1117 }
1118
1119 // Check if compilation is blocking
1120 methodHandle mh(THREAD, method);
1121 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1122 bool is_blocking = !directive->BackgroundCompilationOption;
1123 DirectivesStack::release(directive);
1124
1125 // Compile method and check result
1126 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1127 MutexLocker mu(THREAD, Compile_lock);
1128 bool is_queued = mh->queued_for_compilation();
1129 if ((!is_blocking && is_queued) || nm != nullptr) {
1130 return true;
1131 }
1132 // Check code again because compilation may be finished before Compile_lock is acquired.
1133 if (bci == InvocationEntryBci) {
1134 nmethod* code = mh->code();
1135 if (code != nullptr) {
1136 return true;
1137 }
1138 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1139 return true;
1140 }
1141 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1142 mh->print_short_name(tty);
1143 tty->cr();
1144 if (is_blocking && is_queued) {
1145 tty->print_cr("WB error: blocking compilation is still in queue!");
1146 }
1147 return false;
1148 }
1149
1150 size_t WhiteBox::get_in_use_monitor_count() {
1151 return ObjectSynchronizer::_in_use_list.count();
1152 }
1153
1154 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1155 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1156 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1157 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1158 WB_END
1159
1160 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1161 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1162 Method* clinit = ik->class_initializer();
1163 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1164 return false;
1165 }
1166 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1167 WB_END
1168
1169 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1170 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1171 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1172
1173 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1174 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1175 bool result = directive->PrintAssemblyOption;
1176 DirectivesStack::release(directive);
1177
1178 return result;
1179 WB_END
1180
1181 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1182 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1183 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1184
1185 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1186
1187 ResourceMark rm(THREAD);
1188 const char* error_msg = nullptr;
1189 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1190 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1191
1192 if (m == nullptr) {
1193 assert(error_msg != nullptr, "Always have an error message");
1194 tty->print_cr("Got error: %s", error_msg);
1195 return -1; // Pattern failed
1196 }
1197
1198 // Pattern works - now check if it matches
1199 int result;
1200 if (m->match(mh, InlineMatcher::force_inline)) {
1201 result = 2; // Force inline match
1202 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1203 result = 1; // Dont inline match
1204 } else {
1205 result = 0; // No match
1206 }
1207 delete m;
1208 return result;
1209 WB_END
1210
1211 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1212 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1213 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1214
1215 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1216
1217 ResourceMark rm;
1218 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1219
1220 const char* error_msg = nullptr;
1221
1222 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1223 if (m == nullptr) {
1224 assert(error_msg != nullptr, "Must have error_msg");
1225 tty->print_cr("Got error: %s", error_msg);
1226 return -1;
1227 }
1228
1229 // Pattern works - now check if it matches
1230 int result = m->matches(mh);
1231 delete m;
1232 assert(result == 0 || result == 1, "Result out of range");
1233 return result;
1234 WB_END
1235
1236 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1237 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1238 CHECK_JNI_EXCEPTION(env);
1239 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1240
1241 MethodData* mdo = mh->method_data();
1242 if (mdo == nullptr) {
1243 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1244 mdo = mh->method_data();
1245 }
1246 mdo->init();
1247 InvocationCounter* icnt = mdo->invocation_counter();
1248 InvocationCounter* bcnt = mdo->backedge_counter();
1249 // set i-counter according to CompilationPolicy::is_method_profiled
1250 icnt->set(Tier4MinInvocationThreshold);
1251 bcnt->set(Tier4CompileThreshold);
1252 WB_END
1253
1254 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1255 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1256 CHECK_JNI_EXCEPTION(env);
1257 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1258 MutexLocker mu(THREAD, Compile_lock);
1259 MethodData* mdo = mh->method_data();
1260 MethodCounters* mcs = mh->method_counters();
1261
1262 if (mdo != nullptr) {
1263 mdo->init();
1264 ResourceMark rm(THREAD);
1265 int arg_count = mdo->method()->size_of_parameters();
1266 for (int i = 0; i < arg_count; i++) {
1267 mdo->set_arg_modified(i, 0);
1268 }
1269 mdo->clean_method_data(/*always_clean*/true);
1270 }
1271
1272 mh->clear_is_not_c1_compilable();
1273 mh->clear_is_not_c2_compilable();
1274 mh->clear_is_not_c2_osr_compilable();
1275 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1276 if (mcs != nullptr) {
1277 mcs->clear_counters();
1278 }
1279 WB_END
1280
1281 template <typename T, int type_enum>
1282 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1283 if (name == nullptr) {
1284 return false;
1285 }
1286 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1287 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1288 CHECK_JNI_EXCEPTION_(env, false);
1289 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1290 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1291 env->ReleaseStringUTFChars(name, flag_name);
1292 return (result == JVMFlag::SUCCESS);
1293 }
1294
1295 template <typename T, int type_enum>
1296 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1297 if (name == nullptr) {
1298 return false;
1299 }
1300 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1301 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1302 CHECK_JNI_EXCEPTION_(env, false);
1303 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1304 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1305 env->ReleaseStringUTFChars(name, flag_name);
1306 return (result == JVMFlag::SUCCESS);
1307 }
1308
1309 template <typename T>
1310 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1311 ResourceMark rm(thread);
1312 jclass clazz = env->FindClass(name->as_C_string());
1313 CHECK_JNI_EXCEPTION_(env, nullptr);
1314 jmethodID methodID = env->GetStaticMethodID(clazz,
1315 vmSymbols::valueOf_name()->as_C_string(),
1316 sig->as_C_string());
1317 CHECK_JNI_EXCEPTION_(env, nullptr);
1318 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1319 CHECK_JNI_EXCEPTION_(env, nullptr);
1320 return result;
1321 }
1322
1323 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1324 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1325 }
1326 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1327 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1328 }
1329 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1330 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1331 }
1332 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1333 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1334 }*/
1335 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1336 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1337 }
1338
1339 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1340 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1341 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1342 CHECK_JNI_EXCEPTION_(env, nullptr);
1343 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1344 env->ReleaseStringUTFChars(name, flag_name);
1345 return result;
1346 }
1347
1348 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1349 const JVMFlag* flag = getVMFlag(thread, env, name);
1350 return (flag != nullptr) && flag->is_constant_in_binary();
1351 WB_END
1352
1353 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1354 const JVMFlag* flag = getVMFlag(thread, env, name);
1355 return (flag != nullptr) && flag->is_default();
1356 WB_END
1357
1358 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1359 const JVMFlag* flag = getVMFlag(thread, env, name);
1360 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1361 WB_END
1362
1363 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1364 bool result;
1365 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1366 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1367 return booleanBox(thread, env, result);
1368 }
1369 return nullptr;
1370 WB_END
1371
1372 template <typename T, int type_enum>
1373 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1374 T result;
1375 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1376 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1377 return longBox(thread, env, result);
1378 }
1379 return nullptr;
1380 }
1381
1382 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1383 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1384 WB_END
1385
1386 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1387 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1388 WB_END
1389
1390 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1391 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1392 WB_END
1393
1394 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1395 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1396 WB_END
1397
1398 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1399 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1400 WB_END
1401
1402 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1403 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1404 WB_END
1405
1406 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1407 double result;
1408 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1409 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1410 return doubleBox(thread, env, result);
1411 }
1412 return nullptr;
1413 WB_END
1414
1415 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1416 ccstr ccstrResult;
1417 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1418 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1419 jstring result = env->NewStringUTF(ccstrResult);
1420 CHECK_JNI_EXCEPTION_(env, nullptr);
1421 return result;
1422 }
1423 return nullptr;
1424 WB_END
1425
1426 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1427 bool result = value == JNI_TRUE ? true : false;
1428 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1429 WB_END
1430
1431 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1432 int result = checked_cast<int>(value);
1433 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1434 WB_END
1435
1436 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1437 uint result = checked_cast<uint>(value);
1438 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1439 WB_END
1440
1441 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1442 intx result = value;
1443 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1444 WB_END
1445
1446 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1447 uintx result = value;
1448 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1449 WB_END
1450
1451 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1452 uint64_t result = value;
1453 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1454 WB_END
1455
1456 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1457 size_t result = value;
1458 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1459 WB_END
1460
1461 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1462 double result = value;
1463 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1464 WB_END
1465
1466 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1467 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1468 const char* ccstrValue;
1469 if (value == nullptr) {
1470 ccstrValue = nullptr;
1471 }
1472 else {
1473 ccstrValue = env->GetStringUTFChars(value, nullptr);
1474 CHECK_JNI_EXCEPTION(env);
1475 }
1476 {
1477 ccstr param = ccstrValue;
1478 ThreadInVMfromNative ttvfn(thread); // back to VM
1479 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1480 assert(param == nullptr, "old value is freed automatically and not returned");
1481 }
1482 }
1483 if (value != nullptr) {
1484 env->ReleaseStringUTFChars(value, ccstrValue);
1485 }
1486 WB_END
1487
1488 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1489 WhiteBox::compilation_locked = true;
1490 WB_END
1491
1492 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1493 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1494 WhiteBox::compilation_locked = false;
1495 mo.notify_all();
1496 WB_END
1497
1498 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1499 ResourceMark rm(THREAD);
1500 int len;
1501 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1502 return (StringTable::lookup(name, len) != nullptr);
1503 WB_END
1504
1505 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1506 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1507 Universe::heap()->collect(GCCause::_wb_full_gc);
1508 #if INCLUDE_G1GC || INCLUDE_SERIALGC
1509 if (UseG1GC || UseSerialGC) {
1510 // Needs to be cleared explicitly for G1 and Serial GC.
1511 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1512 }
1513 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC
1514 WB_END
1515
1516 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1517 Universe::heap()->collect(GCCause::_wb_young_gc);
1518 WB_END
1519
1520 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1521 // static+volatile in order to force the read to happen
1522 // (not be eliminated by the compiler)
1523 static char c;
1524 static volatile char* p;
1525
1526 p = os::reserve_memory(os::vm_allocation_granularity());
1527 if (p == nullptr) {
1528 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1529 }
1530
1531 c = *p;
1532 WB_END
1533
1534 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1535 const char* features = VM_Version::features_string();
1536 ThreadToNativeFromVM ttn(thread);
1537 jstring features_string = env->NewStringUTF(features);
1538
1539 CHECK_JNI_EXCEPTION_(env, nullptr);
1540
1541 return features_string;
1542 WB_END
1543
1544 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1545 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1546 return CodeCache::get_code_heap(code)->code_blob_type();
1547 }
1548
1549 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1550 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1551 return CodeCache::get_code_heap(blob_type);
1552 }
1553
1554 struct CodeBlobStub {
1555 CodeBlobStub(const CodeBlob* blob) :
1556 name(os::strdup(blob->name())),
1557 size(blob->size()),
1558 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1559 address((jlong) blob) { }
1560 ~CodeBlobStub() { os::free((void*) name); }
1561 const char* const name;
1562 const jint size;
1563 const jint blob_type;
1564 const jlong address;
1565 };
1566
1567 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1568 ResourceMark rm;
1569 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1570 CHECK_JNI_EXCEPTION_(env, nullptr);
1571 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1572
1573 jstring name = env->NewStringUTF(cb->name);
1574 CHECK_JNI_EXCEPTION_(env, nullptr);
1575 env->SetObjectArrayElement(result, 0, name);
1576
1577 jobject obj = integerBox(thread, env, cb->size);
1578 CHECK_JNI_EXCEPTION_(env, nullptr);
1579 env->SetObjectArrayElement(result, 1, obj);
1580
1581 obj = integerBox(thread, env, cb->blob_type);
1582 CHECK_JNI_EXCEPTION_(env, nullptr);
1583 env->SetObjectArrayElement(result, 2, obj);
1584
1585 obj = longBox(thread, env, cb->address);
1586 CHECK_JNI_EXCEPTION_(env, nullptr);
1587 env->SetObjectArrayElement(result, 3, obj);
1588
1589 return result;
1590 }
1591
1592 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1593 ResourceMark rm(THREAD);
1594 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1595 CHECK_JNI_EXCEPTION_(env, nullptr);
1596 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1597 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1598 jobjectArray result = nullptr;
1599 if (code == nullptr) {
1600 return result;
1601 }
1602 int comp_level = code->comp_level();
1603 int insts_size = code->insts_size();
1604
1605 ThreadToNativeFromVM ttn(thread);
1606 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1607 CHECK_JNI_EXCEPTION_(env, nullptr);
1608 result = env->NewObjectArray(5, clazz, nullptr);
1609 if (result == nullptr) {
1610 return result;
1611 }
1612
1613 CodeBlobStub stub(code);
1614 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1615 CHECK_JNI_EXCEPTION_(env, nullptr);
1616 env->SetObjectArrayElement(result, 0, codeBlob);
1617
1618 jobject level = integerBox(thread, env, comp_level);
1619 CHECK_JNI_EXCEPTION_(env, nullptr);
1620 env->SetObjectArrayElement(result, 1, level);
1621
1622 jbyteArray insts = env->NewByteArray(insts_size);
1623 CHECK_JNI_EXCEPTION_(env, nullptr);
1624 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1625 env->SetObjectArrayElement(result, 2, insts);
1626
1627 jobject id = integerBox(thread, env, code->compile_id());
1628 CHECK_JNI_EXCEPTION_(env, nullptr);
1629 env->SetObjectArrayElement(result, 3, id);
1630
1631 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1632 CHECK_JNI_EXCEPTION_(env, nullptr);
1633 env->SetObjectArrayElement(result, 4, entry_point);
1634
1635 return result;
1636 WB_END
1637
1638 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1639 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1640 BufferBlob* blob;
1641 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1642 if (full_size < size) {
1643 full_size += align_up(size - full_size, oopSize);
1644 }
1645 {
1646 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1647 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1648 if (blob != nullptr) {
1649 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1650 }
1651 }
1652 // Track memory usage statistic after releasing CodeCache_lock
1653 MemoryService::track_code_cache_memory_usage();
1654 return blob;
1655 }
1656
1657 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1658 if (size < 0) {
1659 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1660 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1661 }
1662 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1663 WB_END
1664
1665 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1666 if (addr == 0) {
1667 return;
1668 }
1669 BufferBlob::free((BufferBlob*) addr);
1670 WB_END
1671
1672 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1673 ResourceMark rm;
1674 GrowableArray<CodeBlobStub*> blobs;
1675 {
1676 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1677 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1678 if (heap == nullptr) {
1679 return nullptr;
1680 }
1681 for (CodeBlob* cb = (CodeBlob*) heap->first();
1682 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1683 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1684 new (stub) CodeBlobStub(cb);
1685 blobs.append(stub);
1686 }
1687 }
1688 ThreadToNativeFromVM ttn(thread);
1689 jobjectArray result = nullptr;
1690 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1691 CHECK_JNI_EXCEPTION_(env, nullptr);
1692 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1693 CHECK_JNI_EXCEPTION_(env, nullptr);
1694 if (result == nullptr) {
1695 return result;
1696 }
1697 int i = 0;
1698 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1699 it != blobs.end(); ++it) {
1700 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1701 CHECK_JNI_EXCEPTION_(env, nullptr);
1702 env->SetObjectArrayElement(result, i, obj);
1703 CHECK_JNI_EXCEPTION_(env, nullptr);
1704 ++i;
1705 }
1706 return result;
1707 WB_END
1708
1709 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1710 return CompileBroker::get_compilation_activity_mode();
1711 WB_END
1712
1713 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1714 if (addr == 0) {
1715 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1716 "WB_GetCodeBlob: addr is null");
1717 }
1718 ThreadToNativeFromVM ttn(thread);
1719 CodeBlobStub stub((CodeBlob*) addr);
1720 return codeBlob2objectArray(thread, env, &stub);
1721 WB_END
1722
1723 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1724 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1725 CHECK_JNI_EXCEPTION_(env, 0);
1726 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1727 return (jlong) mh->method_data();
1728 WB_END
1729
1730 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1731 return (jlong) thread->stack_size();
1732 WB_END
1733
1734 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1735 return (jlong) thread->stack_overflow_state()->stack_available(
1736 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1737 WB_END
1738
1739
1740 int WhiteBox::array_bytes_to_length(size_t bytes) {
1741 return Array<u1>::bytes_to_length(bytes);
1742 }
1743
1744 ///////////////
1745 // MetaspaceTestContext and MetaspaceTestArena
1746 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1747 assert(is_aligned(commit_limit, BytesPerWord),
1748 "WB_CreateMetaspaceTestContext: commit_limit is not a multiple of the system word byte size");
1749 assert(is_aligned(reserve_limit, BytesPerWord),
1750 "WB_CreateMetaspaceTestContext: reserve_limit is not a multiple of the system word byte size");
1751 metaspace::MetaspaceTestContext* context =
1752 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit / BytesPerWord,
1753 (size_t) reserve_limit / BytesPerWord);
1754 return (jlong)p2i(context);
1755 WB_END
1756
1757 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1758 delete (metaspace::MetaspaceTestContext*) context;
1759 WB_END
1760
1761 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1762 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1763 context0->purge_area();
1764 WB_END
1765
1766 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1767 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1768 context0->print_on(tty);
1769 WB_END
1770
1771 WB_ENTRY(jlong, WB_GetTotalCommittedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1772 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1773 return (jlong)context0->committed_words() * BytesPerWord;
1774 WB_END
1775
1776 WB_ENTRY(jlong, WB_GetTotalUsedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1777 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1778 return (jlong)context0->used_words() * BytesPerWord;
1779 WB_END
1780
1781 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1782 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ClassMirrorHolderMetaspaceType : Metaspace::StandardMetaspaceType;
1783 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1784 return (jlong)p2i(context0->create_arena(type));
1785 WB_END
1786
1787 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1788 delete (metaspace::MetaspaceTestArena*) arena;
1789 WB_END
1790
1791 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong size))
1792 assert(is_aligned(size, BytesPerWord),
1793 "WB_AllocateFromMetaspaceTestArena: size is not a multiple of the system word byte size");
1794 metaspace::MetaspaceTestArena *arena0 = (metaspace::MetaspaceTestArena *)arena;
1795 MetaWord *p = arena0->allocate((size_t) size / BytesPerWord);
1796 return (jlong)p2i(p);
1797 WB_END
1798
1799 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong size))
1800 assert(is_aligned(size, BytesPerWord),
1801 "WB_DeallocateToMetaspaceTestArena: size is not a multiple of the system word byte size");
1802 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1803 arena0->deallocate((MetaWord*)p, (size_t) size / BytesPerWord);
1804 WB_END
1805
1806 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1807 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1808 WB_END
1809
1810 WB_ENTRY(jlong, WB_WordSize(JNIEnv* env))
1811 return (jlong)BytesPerWord;
1812 WB_END
1813
1814 WB_ENTRY(jlong, WB_RootChunkWordSize(JNIEnv* env))
1815 return (jlong)Metaspace::reserve_alignment_words();
1816 WB_END
1817
1818 WB_ENTRY(jboolean, WB_IsStaticallyLinked(JNIEnv* env, jobject wb))
1819 return JVM_IsStaticallyLinked();
1820 WB_END
1821
1822 //////////////
1823
1824 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1825 if (size < 0) {
1826 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1827 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1828 }
1829
1830 oop class_loader_oop = JNIHandles::resolve(class_loader);
1831 ClassLoaderData* cld = class_loader_oop != nullptr
1832 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1833 : ClassLoaderData::the_null_class_loader_data();
1834
1835 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1836
1837 return (jlong)(uintptr_t)metadata;
1838 WB_END
1839
1840 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1841 jstring version, jstring location, jobjectArray packages))
1842 Handle h_module (THREAD, JNIHandles::resolve(module));
1843 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1844 WB_END
1845
1846 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1847 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1848 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1849 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1850 WB_END
1851
1852 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1853 Handle h_module (THREAD, JNIHandles::resolve(module));
1854 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1855 WB_END
1856
1857 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1858 Handle h_module (THREAD, JNIHandles::resolve(module));
1859 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1860 WB_END
1861
1862 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1863 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1864 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1865 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1866 WB_END
1867
1868 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1869 if (inc < 0) {
1870 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1871 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1872 }
1873
1874 jlong max_size_t = (jlong) ((size_t) -1);
1875 if (inc > max_size_t) {
1876 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1877 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1878 }
1879
1880 size_t new_cap_until_GC = 0;
1881 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1882 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1883 if (!success) {
1884 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1885 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1886 "due to contention with another thread");
1887 }
1888 return (jlong) new_cap_until_GC;
1889 WB_END
1890
1891 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1892 return (jlong) MetaspaceGC::capacity_until_GC();
1893 WB_END
1894
1895 // The function is only valid when CDS is available.
1896 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1897 #if INCLUDE_CDS
1898 return (jlong)MetaspaceShared::core_region_alignment();
1899 #else
1900 ShouldNotReachHere();
1901 return 0L;
1902 #endif
1903 WB_END
1904
1905 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1906 oop obj_oop = JNIHandles::resolve(obj);
1907 return (jboolean) obj_oop->mark().has_monitor();
1908 WB_END
1909
1910 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1911 return (jlong) WhiteBox::get_in_use_monitor_count();
1912 WB_END
1913
1914 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1915 return (jint) LockStack::CAPACITY;
1916 WB_END
1917
1918 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1919 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1920 WB_END
1921
1922 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1923 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1924 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1925 WB_END
1926
1927 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1928 VM_ForceSafepoint force_safepoint_op;
1929 VMThread::execute(&force_safepoint_op);
1930 WB_END
1931
1932 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1933 nullStream dev_null;
1934 ClassLoaderStatsVMOperation force_op(&dev_null);
1935 VMThread::execute(&force_op);
1936 WB_END
1937
1938 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1939 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1940 return (jlong) ik->constants();
1941 WB_END
1942
1943 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1944 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1945 objArrayOop resolved_refs= ik->constants()->resolved_references();
1946 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1947 WB_END
1948
1949 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1950 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1951 ConstantPool* cp = ik->constants();
1952 if (cp->cache() == nullptr) {
1953 return -1;
1954 }
1955 return cp->resolved_field_entries_length();
1956 WB_END
1957
1958 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1959 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1960 ConstantPool* cp = ik->constants();
1961 if (cp->cache() == nullptr) {
1962 return -1;
1963 }
1964 return cp->resolved_field_entry_at(index)->constant_pool_index();
1965 WB_END
1966
1967 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1968 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1969 ConstantPool* cp = ik->constants();
1970 if (cp->cache() == nullptr) {
1971 return -1;
1972 }
1973 return cp->resolved_method_entries_length();
1974 WB_END
1975
1976 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1977 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1978 ConstantPool* cp = ik->constants();
1979 if (cp->cache() == nullptr) {
1980 return -1;
1981 }
1982 return cp->resolved_method_entry_at(index)->constant_pool_index();
1983 WB_END
1984
1985 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1986 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1987 ConstantPool* cp = ik->constants();
1988 if (cp->cache() == nullptr) {
1989 return -1;
1990 }
1991 return cp->resolved_indy_entries_length();
1992 WB_END
1993
1994 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1995 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1996 ConstantPool* cp = ik->constants();
1997 if (cp->cache() == nullptr) {
1998 return -1;
1999 }
2000 return cp->resolved_indy_entry_at(index)->constant_pool_index();
2001 WB_END
2002
2003 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
2004 ThreadToNativeFromVM ttnfv(thread);
2005 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2006 ResourceMark rm;
2007 stringStream st;
2008 {
2009 ThreadInVMfromNative ttvfn(thread); // back to VM
2010 ClassPrinter::print_classes(c, flags, &st);
2011 }
2012 jstring result = env->NewStringUTF(st.freeze());
2013 CHECK_JNI_EXCEPTION_(env, nullptr);
2014 return result;
2015 WB_END
2016
2017 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
2018 ThreadToNativeFromVM ttnfv(thread);
2019 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2020 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
2021 ResourceMark rm;
2022 stringStream st;
2023 {
2024 ThreadInVMfromNative ttvfn(thread); // back to VM
2025 ClassPrinter::print_methods(c, m, flags, &st);
2026 }
2027 jstring result = env->NewStringUTF(st.freeze());
2028 CHECK_JNI_EXCEPTION_(env, nullptr);
2029 return result;
2030 WB_END
2031
2032 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
2033 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
2034 VMThread::execute(&clear_ics);
2035 WB_END
2036
2037 template <typename T>
2038 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
2039 assert(value != nullptr, "sanity");
2040 if (method == nullptr || name == nullptr) {
2041 return false;
2042 }
2043 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2044 CHECK_JNI_EXCEPTION_(env, false);
2045 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2046 // can't be in VM when we call JNI
2047 ThreadToNativeFromVM ttnfv(thread);
2048 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2049 CHECK_JNI_EXCEPTION_(env, false);
2050 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
2051 env->ReleaseStringUTFChars(name, flag_name);
2052 if (option == CompileCommandEnum::Unknown) {
2053 return false;
2054 }
2055 if (!CompilerOracle::option_matches_type(option, *value)) {
2056 return false;
2057 }
2058 return CompilerOracle::has_option_value(mh, option, *value);
2059 }
2060
2061 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2062 bool result;
2063 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2064 // can't be in VM when we call JNI
2065 ThreadToNativeFromVM ttnfv(thread);
2066 return booleanBox(thread, env, result);
2067 }
2068 return nullptr;
2069 WB_END
2070
2071 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2072 intx result;
2073 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2074 // can't be in VM when we call JNI
2075 ThreadToNativeFromVM ttnfv(thread);
2076 return longBox(thread, env, result);
2077 }
2078 return nullptr;
2079 WB_END
2080
2081 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2082 uintx result;
2083 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2084 // can't be in VM when we call JNI
2085 ThreadToNativeFromVM ttnfv(thread);
2086 return longBox(thread, env, result);
2087 }
2088 return nullptr;
2089 WB_END
2090
2091 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2092 double result;
2093 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2094 // can't be in VM when we call JNI
2095 ThreadToNativeFromVM ttnfv(thread);
2096 return doubleBox(thread, env, result);
2097 }
2098 return nullptr;
2099 WB_END
2100
2101 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2102 ccstr ccstrResult;
2103 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2104 // can't be in VM when we call JNI
2105 ThreadToNativeFromVM ttnfv(thread);
2106 jstring result = env->NewStringUTF(ccstrResult);
2107 CHECK_JNI_EXCEPTION_(env, nullptr);
2108 return result;
2109 }
2110 return nullptr;
2111 WB_END
2112
2113 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2114 const char* p = CDSConfig::default_archive_path();
2115 ThreadToNativeFromVM ttn(thread);
2116 jstring path_string = env->NewStringUTF(p);
2117
2118 CHECK_JNI_EXCEPTION_(env, nullptr);
2119
2120 return path_string;
2121 WB_END
2122
2123 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2124 return CDSConfig::is_using_archive();
2125 WB_END
2126
2127 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2128 #if INCLUDE_CDS
2129 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2130 #else
2131 ShouldNotReachHere();
2132 return (jint)-1;
2133 #endif
2134 WB_END
2135
2136 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2137 #if INCLUDE_CDS
2138 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2139 #else
2140 ShouldNotReachHere();
2141 return (jint)-1;
2142 #endif
2143 WB_END
2144
2145 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2146 return FileMapInfo::memory_mapping_failed();
2147 WB_END
2148
2149 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2150 ResourceMark rm(THREAD);
2151 oop str_oop = JNIHandles::resolve(str);
2152 int length;
2153 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2154 return StringTable::lookup_shared(chars, length) == str_oop;
2155 WB_END
2156
2157 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2158 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2159 WB_END
2160
2161 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2162 return ArchiveHeapLoader::is_mapped();
2163 WB_END
2164
2165 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2166 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2167 if (!k->is_instance_klass()) {
2168 return;
2169 }
2170 InstanceKlass *ik = InstanceKlass::cast(k);
2171 ik->link_class(THREAD); // may throw verification error
2172 WB_END
2173
2174 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2175 return ArchiveHeapLoader::is_mapped();
2176 WB_END
2177
2178 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2179 #if INCLUDE_CDS
2180 // An exploded build inhibits use of CDS. Therefore, for the
2181 // purpose of testing, the JVM can be treated as not having CDS
2182 // built in at all.
2183 return ClassLoader::has_jrt_entry();
2184 #else
2185 return false;
2186 #endif // INCLUDE_CDS
2187 WB_END
2188
2189 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2190 #if COMPILER2_OR_JVMCI
2191 return true;
2192 #else
2193 return false;
2194 #endif
2195 WB_END
2196
2197 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2198 #if INCLUDE_JVMCI
2199 return JVMCIGlobals::gc_supports_jvmci();
2200 #else
2201 return false;
2202 #endif
2203 WB_END
2204
2205 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2206 return !CDSConfig::are_vm_options_incompatible_with_dumping_heap();
2207 WB_END
2208
2209
2210 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2211 #if INCLUDE_JFR
2212 return true;
2213 #else
2214 return false;
2215 #endif // INCLUDE_JFR
2216 WB_END
2217
2218 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2219 #if defined(DTRACE_ENABLED)
2220 return true;
2221 #else
2222 return false;
2223 #endif // DTRACE_ENABLED
2224 WB_END
2225
2226 #if INCLUDE_CDS
2227
2228 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2229 ResourceMark rm;
2230 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2231 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2232 return result;
2233 WB_END
2234
2235 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2236 ResourceMark rm;
2237 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2238 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2239 return result;
2240 WB_END
2241
2242 #endif // INCLUDE_CDS
2243
2244 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2245 class ReadMonitorsClosure : public HandshakeClosure {
2246 jboolean _executed;
2247
2248 void do_thread(Thread* th) {
2249 JavaThread* jt = JavaThread::cast(th);
2250 ResourceMark rm;
2251
2252 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2253
2254 if (!jt->has_last_Java_frame()) {
2255 return;
2256 }
2257 RegisterMap rmap(jt,
2258 RegisterMap::UpdateMap::include,
2259 RegisterMap::ProcessFrames::include,
2260 RegisterMap::WalkContinuation::skip);
2261 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2262 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2263 if (monitors != nullptr) {
2264 int len = monitors->length();
2265 // Walk monitors youngest to oldest
2266 for (int i = len - 1; i >= 0; i--) {
2267 MonitorInfo* mon_info = monitors->at(i);
2268 if (mon_info->eliminated()) continue;
2269 oop owner = mon_info->owner();
2270 if (owner != nullptr) {
2271 info->append(mon_info);
2272 }
2273 }
2274 }
2275 }
2276 _executed = true;
2277 }
2278
2279 public:
2280 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2281 jboolean executed() const { return _executed; }
2282 };
2283
2284 ReadMonitorsClosure rmc;
2285 if (thread_handle != nullptr) {
2286 ThreadsListHandle tlh;
2287 JavaThread* target = nullptr;
2288 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2289 if (is_alive) {
2290 Handshake::execute(&rmc, &tlh, target);
2291 }
2292 }
2293 return rmc.executed();
2294 WB_END
2295
2296 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2297 class TraceSelfClosure : public HandshakeClosure {
2298 jint _num_threads_completed;
2299
2300 void do_thread(Thread* th) {
2301 JavaThread* jt = JavaThread::cast(th);
2302 ResourceMark rm;
2303
2304 jt->print_on(tty);
2305 jt->print_stack_on(tty);
2306 tty->cr();
2307 Atomic::inc(&_num_threads_completed);
2308 }
2309
2310 public:
2311 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2312
2313 jint num_threads_completed() const { return _num_threads_completed; }
2314 };
2315 TraceSelfClosure tsc(Thread::current());
2316
2317 if (all_threads) {
2318 Handshake::execute(&tsc);
2319 } else if (thread_handle != nullptr) {
2320 ThreadsListHandle tlh;
2321 JavaThread* target = nullptr;
2322 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2323 if (is_alive) {
2324 Handshake::execute(&tsc, &tlh, target);
2325 }
2326 }
2327 return tsc.num_threads_completed();
2328 WB_END
2329
2330 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2331 class TraceSelfClosure : public AsyncHandshakeClosure {
2332 JavaThread* _self;
2333 void do_thread(Thread* th) {
2334 assert(th->is_Java_thread(), "sanity");
2335 // AsynchHandshake handshakes are only executed by target.
2336 assert(_self == th, "Must be");
2337 assert(Thread::current() == th, "Must be");
2338 JavaThread* jt = JavaThread::cast(th);
2339 ResourceMark rm;
2340 jt->print_on(tty);
2341 jt->print_stack_on(tty);
2342 tty->cr();
2343 }
2344
2345 public:
2346 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2347 };
2348 if (thread_handle != nullptr) {
2349 ThreadsListHandle tlh;
2350 JavaThread* target = nullptr;
2351 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2352 if (is_alive) {
2353 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2354 Handshake::execute(tsc, target);
2355 }
2356 }
2357 WB_END
2358
2359 static volatile int _emulated_lock = 0;
2360
2361 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2362 JavaThread* self = JavaThread::current();
2363
2364 {
2365 // Before trying to acquire the lock transition into a safepoint safe state.
2366 // Otherwise if either suspender or suspendee blocks for a safepoint
2367 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2368 // the lock without allowing the safepoint to progress.
2369 ThreadBlockInVM tbivm(self);
2370
2371 // We will deadlock here if we are 'suspender' and 'suspendee'
2372 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2373 // at the right place.
2374 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2375 assert(_emulated_lock == 1, "Must be locked");
2376
2377 // Sleep much longer in suspendee to force situation where
2378 // 'suspender' is waiting above to acquire lock.
2379 os::naked_short_sleep(suspender ? 1 : 10);
2380 }
2381 Atomic::store(&_emulated_lock, 0);
2382 WB_END
2383
2384 // Some convenience methods to deal with objects from java
2385 int WhiteBox::offset_for_field(const char* field_name, oop object,
2386 Symbol* signature_symbol) {
2387 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2388
2389 //Get the class of our object
2390 Klass* arg_klass = object->klass();
2391 //Turn it into an instance-klass
2392 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2393
2394 //Create symbols to look for in the class
2395 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2396
2397 //To be filled in with an offset of the field we're looking for
2398 fieldDescriptor fd;
2399
2400 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2401 if (res == nullptr) {
2402 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2403 name_symbol->as_C_string());
2404 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2405 }
2406
2407 //fetch the field at the offset we've found
2408 int dest_offset = fd.offset();
2409
2410 return dest_offset;
2411 }
2412
2413
2414 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2415 int offset = offset_for_field(field_name, object,
2416 vmSymbols::string_signature());
2417 oop string = object->obj_field(offset);
2418 if (string == nullptr) {
2419 return nullptr;
2420 }
2421 const char* ret = java_lang_String::as_utf8_string(string);
2422 return ret;
2423 }
2424
2425 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2426 int offset =
2427 offset_for_field(field_name, object, vmSymbols::bool_signature());
2428 bool ret = (object->bool_field(offset) == JNI_TRUE);
2429 return ret;
2430 }
2431
2432 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2433 ResourceMark rm;
2434 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2435 const char* klass_name = klass->external_name();
2436
2437 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2438
2439 // one by one registration natives for exception catching
2440 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2441 CHECK_JNI_EXCEPTION(env);
2442 for (int i = 0, n = method_count; i < n; ++i) {
2443 // Skip dummy entries
2444 if (method_array[i].fnPtr == nullptr) continue;
2445 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2446 jthrowable throwable_obj = env->ExceptionOccurred();
2447 if (throwable_obj != nullptr) {
2448 env->ExceptionClear();
2449 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2450 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2451 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2452 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2453 klass_name, method_array[i].name, method_array[i].signature);
2454 }
2455 } else {
2456 // Registration failed unexpectedly.
2457 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2458 klass_name, method_array[i].name, method_array[i].signature);
2459 env->UnregisterNatives(wbclass);
2460 break;
2461 }
2462 }
2463 }
2464 }
2465
2466 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2467 // can't be in VM when we call JNI
2468 ThreadToNativeFromVM ttnfv(thread);
2469 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2470 CHECK_JNI_EXCEPTION_(env, 0);
2471 int ret;
2472 {
2473 ThreadInVMfromNative ttvfn(thread); // back to VM
2474 ret = DirectivesParser::parse_string(dir, tty);
2475 }
2476 env->ReleaseStringUTFChars(compDirect, dir);
2477 // -1 for error parsing directive. Return 0 as number of directives added.
2478 if (ret == -1) {
2479 ret = 0;
2480 }
2481 return (jint) ret;
2482 WB_END
2483
2484 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2485 DirectivesStack::pop(count);
2486 WB_END
2487
2488 // Checks that the library libfile has the noexecstack bit set.
2489 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2490 jboolean ret = false;
2491 #ifdef LINUX
2492 // Can't be in VM when we call JNI.
2493 ThreadToNativeFromVM ttnfv(thread);
2494 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2495 CHECK_JNI_EXCEPTION_(env, 0);
2496 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2497 env->ReleaseStringUTFChars(libfile, lf);
2498 #endif
2499 return ret;
2500 WB_END
2501
2502 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2503 LINUX_ONLY(return OSContainer::is_containerized();)
2504 return false;
2505 WB_END
2506
2507 // Physical memory of the host machine (including containers)
2508 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2509 LINUX_ONLY(return os::Linux::physical_memory();)
2510 return os::physical_memory();
2511 WB_END
2512
2513 // Physical swap of the host machine (including containers), Linux only.
2514 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2515 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2516 return -1; // Not used/implemented on other platforms
2517 WB_END
2518
2519 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2520 jobject o,
2521 jstring proc_cgroups,
2522 jstring proc_self_cgroup,
2523 jstring proc_self_mountinfo))
2524 jint ret = 0;
2525 #ifdef LINUX
2526 ThreadToNativeFromVM ttnfv(thread);
2527 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2528 CHECK_JNI_EXCEPTION_(env, 0);
2529 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2530 CHECK_JNI_EXCEPTION_(env, 0);
2531 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2532 CHECK_JNI_EXCEPTION_(env, 0);
2533 u1 cg_type_flags = 0;
2534 // This sets cg_type_flags
2535 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2536 ret = (jint)cg_type_flags;
2537 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2538 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2539 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2540 #endif
2541 return ret;
2542 WB_END
2543
2544 // Available cpus of the host machine, Linux only.
2545 // Used in container testing.
2546 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2547 LINUX_ONLY(return os::Linux::active_processor_count();)
2548 return -1; // Not used/implemented on other platforms
2549 WB_END
2550
2551 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2552 os::print_os_info(tty);
2553 WB_END
2554
2555 // Elf decoder
2556 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2557 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2558 ElfFile::_do_not_cache_elf_section = true;
2559 #endif
2560 WB_END
2561
2562 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2563 return (jlong) ResolvedMethodTable::items_count();
2564 WB_END
2565
2566 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2567 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2568 // Return size in bytes.
2569 return k->size() * wordSize;
2570 WB_END
2571
2572 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2573 // It explains how the thread's priority field is used for test state coordination.
2574 //
2575 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2576 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2577 jlong tid = java_lang_Thread::thread_id(target_oop);
2578 JavaThread* target = java_lang_Thread::thread(target_oop);
2579
2580 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2581 ThreadsListHandle tlh;
2582
2583 // Look up the target thread by tid to ensure it is present
2584 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2585 if (t == nullptr) {
2586 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2587 }
2588
2589 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2590 // Allow target to terminate by boosting priority
2591 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2592
2593 // Now wait for the target to terminate
2594 while (!target->is_terminated()) {
2595 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2596 os::naked_short_sleep(0);
2597 }
2598
2599 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2600
2601 // Now release the GC inducing thread - we have to re-resolve the external oop that
2602 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2603 oop original = JNIHandles::resolve_non_null(target_handle);
2604 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2605
2606 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2607
2608 // The Java code should be creating garbage and triggering GC, which would potentially move
2609 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2610 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2611 // kick in.
2612 for (int i = 0; i < 5; i++) {
2613 oop original = JNIHandles::resolve_non_null(target_handle);
2614 oop current = t->threadObj();
2615 if (original != current) {
2616 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2617 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2618 } else {
2619 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2620 ThreadBlockInVM tbivm(thread);
2621 os::naked_short_sleep(50);
2622 }
2623 }
2624 WB_END
2625
2626 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2627 ResourceMark rm; // for verify
2628 stringStream st;
2629 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2630 frame* current_frame = fst.current();
2631 if (log) {
2632 current_frame->print_value_on(&st);
2633 }
2634 current_frame->verify(fst.register_map());
2635 }
2636 if (log) {
2637 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2638 tty->print_raw(st.freeze());
2639 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2640 }
2641 WB_END
2642
2643 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2644 #if INCLUDE_JVMTI
2645 return JNI_TRUE;
2646 #else
2647 return JNI_FALSE;
2648 #endif
2649 WB_END
2650
2651 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2652 os::naked_short_sleep(time);
2653 WB_END
2654
2655 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2656 ThreadToNativeFromVM ttn(thread);
2657 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2658 CHECK_JNI_EXCEPTION_(env, nullptr);
2659 return info_string;
2660 WB_END
2661
2662 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2663 #if INCLUDE_G1GC
2664 if (!UseG1GC) {
2665 ShouldNotReachHere();
2666 return;
2667 }
2668 oop obj = JNIHandles::resolve(o);
2669 G1CollectedHeap::heap()->pin_object(thread, obj);
2670 #else
2671 ShouldNotReachHere();
2672 #endif // INCLUDE_G1GC
2673 WB_END
2674
2675 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2676 #if INCLUDE_G1GC
2677 if (!UseG1GC) {
2678 ShouldNotReachHere();
2679 return;
2680 }
2681 oop obj = JNIHandles::resolve(o);
2682 G1CollectedHeap::heap()->unpin_object(thread, obj);
2683 #else
2684 ShouldNotReachHere();
2685 #endif // INCLUDE_G1GC
2686 WB_END
2687
2688 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2689 if (!Continuations::enabled()) {
2690 tty->print_cr("WB error: must be Continuations::enabled()!");
2691 return JNI_FALSE;
2692 }
2693 jboolean result = false;
2694 #if INCLUDE_JVMTI
2695 if (enable) {
2696 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2697 } else {
2698 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2699 }
2700 #endif
2701 return result;
2702 WB_END
2703
2704 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2705 void* const from = (void*)addr;
2706 void* const to = (void*)(addr + size);
2707 if (from > to) {
2708 os::pretouch_memory(from, to, os::vm_page_size());
2709 }
2710 WB_END
2711
2712 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2713 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2714 WB_END
2715
2716 // Reports resident set size (RSS) in bytes
2717 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2718 return os::rss();
2719 WB_END
2720
2721 #define CC (char*)
2722
2723 static JNINativeMethod methods[] = {
2724 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2725 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2726 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2727 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2728 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2729 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2730 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2731 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2732 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2733 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2734 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2735 {CC"parseCommandLine0",
2736 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2737 (void*) &WB_ParseCommandLine
2738 },
2739 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2740 (void*)&WB_AddToBootstrapClassLoaderSearch},
2741 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2742 (void*)&WB_AddToSystemClassLoaderSearch},
2743 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2744 (void*)&WB_GetCompressedOopsMaxHeapSize},
2745 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2746 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2747 {CC"decodeNKlassAndAccessKlass",CC"(I)V", (void*)&WB_DecodeNKlassAndAccessKlass},
2748 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2749 #if INCLUDE_CDS
2750 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2751 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2752 #endif
2753 #if INCLUDE_G1GC
2754 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2755 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2756 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2757 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2758 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2759 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2760 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2761 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2762 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2763 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2764 (void*)&WB_G1AuxiliaryMemoryUsage },
2765 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2766 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2767 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2768 #endif // INCLUDE_G1GC
2769 #if INCLUDE_PARALLELGC
2770 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2771 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2772 #endif
2773 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2774 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2775 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2776 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2777 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2778 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2779 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2780 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2781 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2782 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2783 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2784 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2785 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2786 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2787 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2788 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2789 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2790 (void*)&WB_DeoptimizeMethod },
2791 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2792 (void*)&WB_IsMethodCompiled },
2793 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2794 (void*)&WB_IsMethodCompilable},
2795 {CC"isMethodQueuedForCompilation0",
2796 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2797 {CC"isIntrinsicAvailable0",
2798 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2799 (void*)&WB_IsIntrinsicAvailable},
2800 {CC"makeMethodNotCompilable0",
2801 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2802 {CC"testSetDontInlineMethod0",
2803 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2804 {CC"getMethodCompilationLevel0",
2805 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2806 {CC"getMethodDecompileCount0",
2807 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2808 {CC"getMethodTrapCount0",
2809 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2810 (void*)&WB_GetMethodTrapCount},
2811 {CC"getDeoptCount0",
2812 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2813 {CC"getMethodEntryBci0",
2814 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2815 {CC"getCompileQueueSize",
2816 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2817 {CC"testSetForceInlineMethod0",
2818 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2819 {CC"enqueueMethodForCompilation0",
2820 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2821 {CC"enqueueInitializerForCompilation0",
2822 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2823 {CC"markMethodProfiled",
2824 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2825 {CC"clearMethodState0",
2826 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2827 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2828 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2829 {CC"matchesMethod",
2830 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2831 (void*)&WB_MatchesMethod},
2832 {CC"matchesInline",
2833 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2834 (void*)&WB_MatchesInline},
2835 {CC"shouldPrintAssembly",
2836 CC"(Ljava/lang/reflect/Executable;I)Z",
2837 (void*)&WB_ShouldPrintAssembly},
2838
2839 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2840 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2841 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2842 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2843 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2844 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2845 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2846 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2847 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2848 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2849 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2850 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2851 (void*)&WB_SetStringVMFlag},
2852 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2853 (void*)&WB_GetBooleanVMFlag},
2854 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2855 (void*)&WB_GetIntVMFlag},
2856 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2857 (void*)&WB_GetUintVMFlag},
2858 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2859 (void*)&WB_GetIntxVMFlag},
2860 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2861 (void*)&WB_GetUintxVMFlag},
2862 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2863 (void*)&WB_GetUint64VMFlag},
2864 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2865 (void*)&WB_GetSizeTVMFlag},
2866 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2867 (void*)&WB_GetDoubleVMFlag},
2868 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2869 (void*)&WB_GetStringVMFlag},
2870 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2871 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2872 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2873 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2874 {CC"allocateMetaspace",
2875 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2876 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2877 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2878 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2879 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2880 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2881 (void*)&WB_GetNMethod },
2882 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2883 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2884 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2885 {CC"getCompilationActivityMode",
2886 CC"()I", (void*)&WB_GetCompilationActivityMode},
2887 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2888 (void*)&WB_GetMethodData },
2889 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2890 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2891 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2892 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2893 (void*)&WB_DefineModule },
2894 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2895 (void*)&WB_AddModuleExports },
2896 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2897 (void*)&WB_AddReadsModule },
2898 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2899 (void*)&WB_AddModuleExportsToAllUnnamed },
2900 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2901 (void*)&WB_AddModuleExportsToAll },
2902 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2903 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2904 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
2905 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2906 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2907 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2908 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2909 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2910 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2911 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2912 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2913 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2914 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2915 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2916 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2917 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2918 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2919 {CC"getMethodBooleanOption",
2920 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2921 (void*)&WB_GetMethodBooleaneOption},
2922 {CC"getMethodIntxOption",
2923 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2924 (void*)&WB_GetMethodIntxOption},
2925 {CC"getMethodUintxOption",
2926 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2927 (void*)&WB_GetMethodUintxOption},
2928 {CC"getMethodDoubleOption",
2929 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2930 (void*)&WB_GetMethodDoubleOption},
2931 {CC"getMethodStringOption",
2932 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2933 (void*)&WB_GetMethodStringOption},
2934 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2935 (void*)&WB_GetDefaultArchivePath},
2936 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2937 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2938 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2939 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2940 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2941 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2942 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2943 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2944 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2945 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2946 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2947 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2948 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2949 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2950 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2951 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2952
2953 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2954 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2955 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2956 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2957 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2958 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2959 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2960 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2961 (void*)&WB_AddCompilerDirective },
2962 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2963 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2964 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2965 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2966 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2967 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2968 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2969 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2970 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2971 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2972 (void*)&WB_ConcurrentGCRunTo},
2973 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2974 (void*)&WB_CheckLibSpecifiesNoexecstack},
2975 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2976 {CC"validateCgroup",
2977 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2978 (void*)&WB_ValidateCgroup },
2979 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2980 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2981 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
2982 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2983 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2984 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2985 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2986
2987 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2988 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2989 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2990 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2991 {CC"getTotalCommittedBytesInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedBytesInMetaspaceTestContext},
2992 {CC"getTotalUsedBytesInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedBytesInMetaspaceTestContext},
2993 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2994 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2995 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2996 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2997 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2998
2999 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
3000 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
3001 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
3002
3003 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
3004 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
3005 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
3006 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
3007 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
3008 {CC"rss", CC"()J", (void*)&WB_Rss},
3009 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString},
3010 {CC"lockAndStuckInSafepoint", CC"()V", (void*)&WB_TakeLockAndHangInSafepoint},
3011 {CC"wordSize", CC"()J", (void*)&WB_WordSize},
3012 {CC"rootChunkWordSize", CC"()J", (void*)&WB_RootChunkWordSize},
3013 {CC"isStatic", CC"()Z", (void*)&WB_IsStaticallyLinked}
3014 };
3015
3016
3017 #undef CC
3018
3019 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
3020 {
3021 if (WhiteBoxAPI) {
3022 // Make sure that wbclass is loaded by the null classloader
3023 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
3024 Handle loader(THREAD, ik->class_loader());
3025 if (loader.is_null()) {
3026 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
3027 WhiteBox::set_used();
3028 }
3029 }
3030 }
3031 JVM_END