1 /*
2 * Copyright (c) 2012, 2026, 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/aotMappedHeapLoader.hpp"
27 #include "cds/aotMetaspace.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.inline.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 "code/compiledIC.hpp"
43 #include "compiler/compilationPolicy.hpp"
44 #include "compiler/compilerOracle.hpp"
45 #include "compiler/directivesParser.hpp"
46 #include "compiler/methodMatcher.hpp"
47 #include "gc/shared/concurrentGCBreakpoints.hpp"
48 #include "gc/shared/gcConfig.hpp"
49 #include "gc/shared/genArguments.hpp"
50 #include "jfr/periodic/sampling/jfrCPUTimeThreadSampler.hpp"
51 #include "jvm.h"
52 #include "jvmtifiles/jvmtiEnv.hpp"
53 #include "logging/log.hpp"
54 #include "memory/iterator.hpp"
55 #include "memory/iterator.inline.hpp"
56 #include "memory/memoryReserver.hpp"
57 #include "memory/metadataFactory.hpp"
58 #include "memory/metaspace/testHelpers.hpp"
59 #include "memory/metaspaceUtils.hpp"
60 #include "memory/oopFactory.hpp"
61 #include "memory/resourceArea.hpp"
62 #include "memory/universe.hpp"
63 #include "nmt/mallocSiteTable.hpp"
64 #include "oops/access.hpp"
65 #include "oops/array.hpp"
66 #include "oops/compressedOops.hpp"
67 #include "oops/compressedOops.inline.hpp"
68 #include "oops/constantPool.inline.hpp"
69 #include "oops/klass.inline.hpp"
70 #include "oops/method.inline.hpp"
71 #include "oops/methodData.inline.hpp"
72 #include "oops/objArrayKlass.hpp"
73 #include "oops/objArrayOop.inline.hpp"
74 #include "oops/oop.inline.hpp"
75 #include "oops/typeArrayOop.inline.hpp"
76 #include "prims/jvmtiEnvBase.hpp"
77 #include "prims/resolvedMethodTable.hpp"
78 #include "prims/wbtestmethods/parserTests.hpp"
79 #include "prims/whitebox.inline.hpp"
80 #include "runtime/arguments.hpp"
81 #include "runtime/atomicAccess.hpp"
82 #include "runtime/deoptimization.hpp"
83 #include "runtime/fieldDescriptor.inline.hpp"
84 #include "runtime/flags/jvmFlag.hpp"
85 #include "runtime/flags/jvmFlagAccess.hpp"
86 #include "runtime/frame.inline.hpp"
87 #include "runtime/handles.inline.hpp"
88 #include "runtime/handshake.hpp"
89 #include "runtime/interfaceSupport.inline.hpp"
90 #include "runtime/javaCalls.hpp"
91 #include "runtime/javaThread.inline.hpp"
92 #include "runtime/jniHandles.inline.hpp"
93 #include "runtime/keepStackGCProcessed.hpp"
94 #include "runtime/lockStack.hpp"
95 #include "runtime/os.hpp"
96 #include "runtime/stackFrameStream.inline.hpp"
97 #include "runtime/synchronizer.hpp"
98 #include "runtime/threadSMR.hpp"
99 #include "runtime/vframe.hpp"
100 #include "runtime/vm_version.hpp"
101 #include "services/memoryService.hpp"
102 #include "utilities/align.hpp"
103 #include "utilities/checkedCast.hpp"
104 #include "utilities/debug.hpp"
105 #include "utilities/elfFile.hpp"
106 #include "utilities/exceptions.hpp"
107 #include "utilities/macros.hpp"
108 #include "utilities/nativeCallStack.hpp"
109 #include "utilities/ostream.hpp"
110 #include "utilities/vmError.hpp"
111 #if INCLUDE_G1GC
112 #include "gc/g1/g1Arguments.hpp"
113 #include "gc/g1/g1CollectedHeap.inline.hpp"
114 #include "gc/g1/g1CollectorState.inline.hpp"
115 #include "gc/g1/g1ConcurrentMark.hpp"
116 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
117 #include "gc/g1/g1HeapRegionManager.hpp"
118 #include "gc/g1/g1HeapRegionRemSet.inline.hpp"
119 #endif // INCLUDE_G1GC
120 #if INCLUDE_PARALLELGC
121 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
122 #endif // INCLUDE_PARALLELGC
123 #if INCLUDE_SERIALGC
124 #include "gc/serial/serialHeap.hpp"
125 #endif // INCLUDE_SERIALGC
126 #if INCLUDE_ZGC
127 #include "gc/z/zAddress.inline.hpp"
128 #include "gc/z/zHeap.inline.hpp"
129 #endif // INCLUDE_ZGC
130 #ifdef LINUX
131 #include "cgroupSubsystem_linux.hpp"
132 #include "os_linux.hpp"
133 #endif
134
135 #define CHECK_JNI_EXCEPTION_(env, value) \
136 do { \
137 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
138 THREAD->clear_pending_jni_exception_check(); \
139 if (HAS_PENDING_EXCEPTION) { \
140 return(value); \
141 } \
142 } while (0)
143
144 #define CHECK_JNI_EXCEPTION(env) \
145 do { \
146 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
147 THREAD->clear_pending_jni_exception_check(); \
148 if (HAS_PENDING_EXCEPTION) { \
149 return; \
150 } \
151 } while (0)
152
153 bool WhiteBox::_used = false;
154 volatile bool WhiteBox::compilation_locked = false;
155
156 class VM_WhiteBoxOperation : public VM_Operation {
157 public:
158 VM_WhiteBoxOperation() { }
159 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
160 bool allow_nested_vm_operations() const { return true; }
161 };
162
163
164 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
165 return (jlong)(void*)JNIHandles::resolve(obj);
166 WB_END
167
168 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
169 return heapOopSize;
170 WB_END
171
172 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
173 return (jint)os::vm_page_size();
174 WB_END
175
176 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
177 return os::vm_allocation_granularity();
178 WB_END
179
180 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
181 return os::large_page_size();
182 WB_END
183
184 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length))
185 ResourceMark rm(THREAD);
186 stringStream sb;
187 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length);
188 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD);
189 return (jstring) JNIHandles::make_local(THREAD, result);
190 WB_END
191
192 WB_ENTRY(jint, WB_TakeLockAndHangInSafepoint(JNIEnv* env, jobject wb))
193 JavaThread* self = JavaThread::current();
194 // VMStatistic_lock is used to minimize interference with VM locking
195 MutexLocker mu(VMStatistic_lock);
196 VM_HangInSafepoint force_safepoint_stuck_op;
197 VMThread::execute(&force_safepoint_stuck_op);
198 ShouldNotReachHere();
199 return 0;
200 WB_END
201
202 WB_ENTRY(jlong, WB_GetMinimumJavaStackSize(JNIEnv* env, jobject o))
203 return os::get_minimum_java_stack_size();
204 WB_END
205
206 class WBIsKlassAliveClosure : public LockedClassesDo {
207 Symbol* _name;
208 int _count;
209 public:
210 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
211
212 void do_klass(Klass* k) {
213 Symbol* ksym = k->name();
214 if (ksym->fast_compare(_name) == 0) {
215 _count++;
216 } else if (k->is_instance_klass()) {
217 // Need special handling for hidden classes because the JVM
218 // appends "+<hex-address>" to hidden class names.
219 InstanceKlass *ik = InstanceKlass::cast(k);
220 if (ik->is_hidden()) {
221 ResourceMark rm;
222 char* k_name = ksym->as_C_string();
223 // Find the first '+' char and truncate the string at that point.
224 // NOTE: This will not work correctly if the original hidden class
225 // name contains a '+'.
226 char* plus_char = strchr(k_name, '+');
227 if (plus_char != nullptr) {
228 *plus_char = 0;
229 char* c_name = _name->as_C_string();
230 if (strcmp(c_name, k_name) == 0) {
231 _count++;
232 }
233 }
234 }
235 }
236 }
237
238 int count() const {
239 return _count;
240 }
241 };
242
243 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
244 oop h_name = JNIHandles::resolve(name);
245 if (h_name == nullptr) {
246 return 0;
247 }
248 Symbol* sym = java_lang_String::as_symbol(h_name);
249 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
250
251 WBIsKlassAliveClosure closure(sym);
252 ClassLoaderDataGraph::classes_do(&closure);
253
254 // Return the count of alive classes with this name.
255 return closure.count();
256 WB_END
257
258 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
259 oop h_name = JNIHandles::resolve(name);
260 if (h_name == nullptr) {
261 return 0;
262 }
263 Symbol* sym = java_lang_String::as_symbol(h_name);
264 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
265 return (jint)sym->refcount();
266 WB_END
267
268
269 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
270 #if INCLUDE_JVMTI
271 ResourceMark rm;
272 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
273 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
274 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
275 assert(err == JVMTI_ERROR_NONE, "must not fail");
276 #endif
277 }
278 WB_END
279
280 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
281 #if INCLUDE_JVMTI
282 ResourceMark rm;
283 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
284 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
285 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
286 assert(err == JVMTI_ERROR_NONE, "must not fail");
287 #endif
288 }
289 WB_END
290
291
292 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
293 return (jlong)Arguments::max_heap_for_compressed_oops();
294 }
295 WB_END
296
297 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
298 tty->print_cr("Minimum heap %zu Initial heap %zu "
299 "Maximum heap %zu Space alignment %zu Heap alignment %zu",
300 MinHeapSize,
301 InitialHeapSize,
302 MaxHeapSize,
303 SpaceAlignment,
304 HeapAlignment);
305 }
306 WB_END
307
308 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
309 size_t granularity = os::vm_allocation_granularity();
310 ReservedHeapSpace rhs = HeapReserver::reserve(100 * granularity, granularity, os::vm_page_size(), nullptr);
311
312 // Check if constraints are complied
313 if (!( UseCompressedOops && rhs.is_reserved() &&
314 CompressedOops::base() != nullptr &&
315 CompressedOops::use_implicit_null_checks() )) {
316 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
317 "\tUseCompressedOops is %d\n"
318 "\trhs.base() is " PTR_FORMAT "\n"
319 "\tCompressedOops::base() is " PTR_FORMAT "\n"
320 "\tCompressedOops::use_implicit_null_checks() is %d",
321 UseCompressedOops,
322 p2i(rhs.base()),
323 p2i(CompressedOops::base()),
324 CompressedOops::use_implicit_null_checks());
325 return;
326 }
327
328 VirtualSpace vs;
329 vs.initialize(rhs, 50 * granularity);
330
331 tty->print_cr("Reading from no access area... ");
332 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
333 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
334 WB_END
335
336 WB_ENTRY(void, WB_DecodeNKlassAndAccessKlass(JNIEnv* env, jobject o, jint nKlass))
337 const narrowKlass nk = (narrowKlass)nKlass;
338 const Klass* const k = CompressedKlassPointers::decode_not_null_without_asserts(nKlass);
339 printf("WB_DecodeNKlassAndAccessKlass: nk %u k " PTR_FORMAT "\n", nk, p2i(k));
340 printf("Will attempt to crash now...\n");
341 fflush(stdout); // flush now - we will crash below
342 // Access k by calling a virtual function - will result in loading the vtable from *k
343 k->print_on(tty);
344 WB_END
345
346 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
347 size_t magnitude, size_t iterations) {
348 size_t granularity = os::vm_allocation_granularity();
349 ReservedHeapSpace rhs = HeapReserver::reserve(reserved_space_size * granularity, granularity, os::vm_page_size(), nullptr);
350 if (!rhs.is_reserved()) {
351 tty->print_cr("Failed to initialize ReservedSpace. Can't proceed.");
352 return 3;
353 }
354
355 VirtualSpace vs;
356 if (!vs.initialize(rhs, 0)) {
357 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
358 return 3;
359 }
360
361 int seed = os::random();
362 tty->print_cr("Random seed is %d", seed);
363
364 for (size_t i = 0; i < iterations; i++) {
365
366 // Whether we will shrink or grow
367 bool shrink = os::random() % 2L == 0;
368
369 // Get random delta to resize virtual space
370 size_t delta = (size_t)os::random() % magnitude;
371
372 // If we are about to shrink virtual space below zero, then expand instead
373 if (shrink && vs.committed_size() < delta) {
374 shrink = false;
375 }
376
377 // Resizing by delta
378 if (shrink) {
379 vs.shrink_by(delta);
380 } else {
381 // If expanding fails expand_by will silently return false
382 vs.expand_by(delta, true);
383 }
384 }
385 return 0;
386 }
387
388 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
389 jlong reserved_space_size, jlong magnitude, jlong iterations))
390 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
391 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
392 iterations);
393 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
394 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
395 return 1;
396 }
397
398 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
399 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
400 if (sizeof(size_t) < sizeof(jlong)) {
401 jlong size_t_max_value = (jlong)SIZE_MAX;
402 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
403 || iterations > size_t_max_value) {
404 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
405 return 2;
406 }
407 }
408
409 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
410 (size_t) magnitude, (size_t) iterations);
411 WB_END
412
413 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
414 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
415 WB_END
416
417 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
418 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
419 WB_END
420
421 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
422 return GCConfig::is_gc_selected_ergonomically();
423 WB_END
424
425 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
426 oop p = JNIHandles::resolve(obj);
427 #if INCLUDE_G1GC
428 if (UseG1GC) {
429 G1CollectedHeap* g1h = G1CollectedHeap::heap();
430 const G1HeapRegion* hr = g1h->heap_region_containing(p);
431 return hr->is_old_or_humongous();
432 }
433 #endif
434 #if INCLUDE_PARALLELGC
435 if (UseParallelGC) {
436 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
437 return !psh->is_in_young(p);
438 }
439 #endif
440 #if INCLUDE_ZGC
441 if (UseZGC) {
442 return ZHeap::heap()->is_old(to_zaddress(p));
443 }
444 #endif
445 #if INCLUDE_SHENANDOAHGC
446 if (UseShenandoahGC) {
447 ShenandoahHeap* sh = ShenandoahHeap::heap();
448 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
449 }
450 #endif
451 #if INCLUDE_SERIALGC
452 if (UseSerialGC) {
453 return !SerialHeap::heap()->is_in_young(p);
454 }
455 #endif
456 ShouldNotReachHere();
457 return false;
458 WB_END
459
460 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
461 oop p = JNIHandles::resolve(obj);
462 return p->size() * HeapWordSize;
463 WB_END
464
465 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
466 return (jlong)SpaceAlignment;
467 WB_END
468
469 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
470 return (jlong)HeapAlignment;
471 WB_END
472
473 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
474 return Universe::heap()->supports_concurrent_gc_breakpoints();
475 WB_END
476
477 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
478 ConcurrentGCBreakpoints::acquire_control();
479 WB_END
480
481 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
482 ConcurrentGCBreakpoints::release_control();
483 WB_END
484
485 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
486 ConcurrentGCBreakpoints::run_to_idle();
487 WB_END
488
489 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
490 Handle h_name(THREAD, JNIHandles::resolve(at));
491 ResourceMark rm;
492 const char* c_name = java_lang_String::as_utf8_string(h_name());
493 return ConcurrentGCBreakpoints::run_to(c_name);
494 WB_END
495
496 WB_ENTRY(jboolean, WB_ShipDebugInfoFull(JNIEnv* env, jobject o))
497 #if defined(SHIP_DEBUGINFO_FULL)
498 return true;
499 #else
500 return false;
501 #endif
502 WB_END
503
504 WB_ENTRY(jboolean, WB_ShipDebugInfoPublic(JNIEnv* env, jobject o))
505 #if defined(SHIP_DEBUGINFO_PUBLIC)
506 return true;
507 #else
508 return false;
509 #endif
510 WB_END
511
512 #if INCLUDE_G1GC
513
514 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
515 if (UseG1GC) {
516 G1CollectedHeap* g1h = G1CollectedHeap::heap();
517 oop result = JNIHandles::resolve(obj);
518 const G1HeapRegion* hr = g1h->heap_region_containing(result);
519 return hr->is_humongous();
520 }
521 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
522 WB_END
523
524 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
525 if (UseG1GC) {
526 G1CollectedHeap* g1h = G1CollectedHeap::heap();
527 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
528 return hr->is_humongous();
529 }
530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
531 WB_END
532
533 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
534 if (UseG1GC) {
535 G1CollectedHeap* g1h = G1CollectedHeap::heap();
536 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
537 return hr->is_free();
538 }
539 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
540 WB_END
541
542 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
543 if (UseG1GC) {
544 G1CollectedHeap* g1h = G1CollectedHeap::heap();
545 size_t nr = g1h->max_num_regions();
546 return (jlong)nr;
547 }
548 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
549 WB_END
550
551 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
552 if (UseG1GC) {
553 G1CollectedHeap* g1h = G1CollectedHeap::heap();
554 size_t nr = g1h->num_free_regions();
555 return (jlong)nr;
556 }
557 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
558 WB_END
559
560 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
561 if (UseG1GC) {
562 G1CollectedHeap* g1h = G1CollectedHeap::heap();
563 return g1h->collector_state()->is_in_concurrent_cycle();
564 }
565 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
566 WB_END
567
568 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
569 if (UseG1GC) {
570 G1CollectedHeap* g1h = G1CollectedHeap::heap();
571 G1ConcurrentMark* cm = g1h->concurrent_mark();
572 return cm->completed_mark_cycles();
573 }
574 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
575 WB_END
576
577 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
578 if (UseG1GC) {
579 return (jint)G1HeapRegion::GrainBytes;
580 }
581 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
582 WB_END
583
584 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
585 if (UseG1GC) {
586 return G1CollectedHeap::heap()->has_uncommittable_regions();
587 }
588 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
589 WB_END
590
591 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
592 if (UseG1GC) {
593 ResourceMark rm(THREAD);
594 G1CollectedHeap* g1h = G1CollectedHeap::heap();
595 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
596 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
597 return JNIHandles::make_local(THREAD, h());
598 }
599 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
600 WB_END
601
602 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
603 if (UseG1GC) {
604 G1NUMA* numa = G1NUMA::numa();
605 return (jint)numa->num_active_nodes();
606 }
607 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
608 WB_END
609
610 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
611 if (UseG1GC) {
612 G1NUMA* numa = G1NUMA::numa();
613 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
614 const uint* node_ids = numa->node_ids();
615
616 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
617 for (int i = 0; i < num_node_ids; i++) {
618 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
619 }
620 return (jintArray) JNIHandles::make_local(THREAD, result);
621 }
622 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
623 WB_END
624
625 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
626
627 private:
628 const int _liveness;
629 size_t _total_count;
630 size_t _total_memory;
631 size_t _total_memory_to_free;
632
633 public:
634 OldRegionsLivenessClosure(int liveness) :
635 _liveness(liveness),
636 _total_count(0),
637 _total_memory(0),
638 _total_memory_to_free(0) { }
639
640 size_t total_count() { return _total_count; }
641 size_t total_memory() { return _total_memory; }
642 size_t total_memory_to_free() { return _total_memory_to_free; }
643
644 bool do_heap_region(G1HeapRegion* r) {
645 if (r->is_old()) {
646 size_t live = r->live_bytes();
647 size_t size = r->used();
648 size_t reg_size = G1HeapRegion::GrainBytes;
649 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
650 _total_memory += size;
651 ++_total_count;
652 if (size == reg_size) {
653 // We don't include non-full regions since they are unlikely included in mixed gc
654 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
655 _total_memory_to_free += size - live;
656 }
657 }
658 }
659 return false;
660 }
661 };
662
663
664 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
665 if (!UseG1GC) {
666 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
667 }
668 if (liveness < 0) {
669 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
670 }
671
672 G1CollectedHeap* g1h = G1CollectedHeap::heap();
673 OldRegionsLivenessClosure rli(liveness);
674 g1h->heap_region_iterate(&rli);
675
676 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
677 result->long_at_put(0, rli.total_count());
678 result->long_at_put(1, rli.total_memory());
679 result->long_at_put(2, rli.total_memory_to_free());
680 return (jlongArray) JNIHandles::make_local(THREAD, result);
681 WB_END
682
683 #endif // INCLUDE_G1GC
684
685 // Alloc memory using the test memory tag so that we can use that to see if
686 // NMT picks it up correctly
687 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
688 jlong addr = 0;
689 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
690 return addr;
691 WB_END
692
693 // Alloc memory with pseudo call stack. The test can create pseudo malloc
694 // allocation site to stress the malloc tracking.
695 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
696 address pc = (address)(size_t)pseudo_stack;
697 NativeCallStack stack(&pc, 1);
698 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
699 WB_END
700
701 // Alloc memory with pseudo call stack and specific memory tag.
702 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag))
703 address pc = (address)(size_t)pseudo_stack;
704 NativeCallStack stack(&pc, 1);
705 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack);
706 WB_END
707
708 // Free the memory allocated by NMTAllocTest
709 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
710 os::free((void*)(uintptr_t)mem);
711 WB_END
712
713 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
714 return (jlong)(uintptr_t)os::reserve_memory(size, mtTest);
715 WB_END
716
717 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
718 return (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size, mtTest);
719 WB_END
720
721 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
722 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
723 WB_END
724
725 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
726 os::uncommit_memory((char *)(uintptr_t)addr, size);
727 WB_END
728
729 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
730 os::release_memory((char *)(uintptr_t)addr, size);
731 WB_END
732
733 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
734 int hash_size = MallocSiteTable::hash_buckets();
735 assert(hash_size > 0, "NMT hash_size should be > 0");
736 return (jint)hash_size;
737 WB_END
738
739 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
740 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
741 return (jlong)arena;
742 WB_END
743
744 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
745 Arena* a = (Arena*)arena;
746 delete a;
747 WB_END
748
749 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
750 Arena* a = (Arena*)arena;
751 a->Amalloc(size_t(size));
752 WB_END
753
754 WB_ENTRY(jboolean, WB_isC2Included(JNIEnv* env))
755 #ifdef COMPILER2
756 return true;
757 #else
758 return false;
759 #endif
760 WB_END
761
762 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
763 assert(method != nullptr, "method should not be null");
764 ThreadToNativeFromVM ttn(thread);
765 return env->FromReflectedMethod(method);
766 }
767
768 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
769 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
770 private:
771 int _result;
772 const bool _make_not_entrant;
773 public:
774 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
775 _result(0), _make_not_entrant(make_not_entrant) { }
776 int result() const { return _result; }
777
778 void doit() {
779 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
780 if (t->has_last_Java_frame()) {
781 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
782 frame* f = fst.current();
783 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
784 Deoptimization::deoptimize(t, *f);
785 if (_make_not_entrant) {
786 nmethod* nm = CodeCache::find_nmethod(f->pc());
787 assert(nm != nullptr, "did not find nmethod");
788 nm->make_not_entrant(nmethod::InvalidationReason::WHITEBOX_DEOPTIMIZATION);
789 }
790 ++_result;
791 }
792 }
793 }
794 }
795 }
796 };
797
798 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
799 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
800 VMThread::execute(&op);
801 return op.result();
802 WB_END
803
804 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
805 bool result = false;
806 if (thread->has_last_Java_frame()) {
807 ResourceMark rm(THREAD);
808 RegisterMap reg_map(thread,
809 RegisterMap::UpdateMap::include,
810 RegisterMap::ProcessFrames::include,
811 RegisterMap::WalkContinuation::skip);
812 javaVFrame *jvf = thread->last_java_vframe(®_map);
813 for (jint d = 0; d < depth && jvf != nullptr; d++) {
814 jvf = jvf->java_sender();
815 }
816 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
817 }
818 return result;
819 WB_END
820
821 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
822 DeoptimizationScope deopt_scope;
823 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
824 deopt_scope.deoptimize_marked();
825 WB_END
826
827 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
828 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
829 int result = 0;
830 CHECK_JNI_EXCEPTION_(env, result);
831
832 DeoptimizationScope deopt_scope;
833 {
834 MutexLocker mu(Compile_lock);
835 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
836 if (is_osr) {
837 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
838 } else {
839 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
840 if (mh->code() != nullptr) {
841 deopt_scope.mark(mh->code());
842 ++result;
843 }
844 }
845 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
846 }
847
848 deopt_scope.deoptimize_marked();
849
850 return result;
851 WB_END
852
853 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
854 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
855 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
856 MutexLocker mu(Compile_lock);
857 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
858 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
859 if (code == nullptr) {
860 return JNI_FALSE;
861 }
862 return !code->is_marked_for_deoptimization();
863 WB_END
864
865 static bool is_excluded_for_compiler(AbstractCompiler* comp, int comp_level, methodHandle& mh) {
866 if (comp == nullptr) {
867 return true;
868 }
869 CompilerDirectiveMatcher matcher(mh, comp_level);
870 return matcher.directive_set()->ExcludeOption;
871 }
872
873 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
874 if (is_osr) {
875 return CompilationPolicy::can_be_osr_compiled(mh, level);
876 } else {
877 return CompilationPolicy::can_be_compiled(mh, level);
878 }
879 }
880
881 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
882 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
883 return false;
884 }
885 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
886 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
887 MutexLocker mu(Compile_lock);
888 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
889
890 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
891 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
892 // to exclude a compilation of 'method'.
893 if (comp_level == CompLevel_any) {
894 // Both compilers could have ExcludeOption set. Check all combinations.
895 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), CompLevel_simple, mh)
896 && is_excluded_for_compiler(CompileBroker::compiler1(), CompLevel_limited_profile, mh)
897 && is_excluded_for_compiler(CompileBroker::compiler1(), CompLevel_full_profile, mh);
898 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), CompLevel_full_optimization, mh);
899 if (excluded_c1 && excluded_c2) {
900 // Compilation of 'method' excluded by both compilers.
901 return false;
902 }
903
904 if (excluded_c1) {
905 // C1 only has ExcludeOption set: Check if compilable with C2.
906 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
907 } else if (excluded_c2) {
908 // C2 only has ExcludeOption set: Check if compilable with C1.
909 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple)
910 || can_be_compiled_at_level(mh, is_osr, CompLevel_limited_profile)
911 || can_be_compiled_at_level(mh, is_osr, CompLevel_full_profile);
912 }
913 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), comp_level, mh)) {
914 // Compilation of 'method' excluded by compiler used for 'comp_level'.
915 return false;
916 }
917
918 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
919 WB_END
920
921 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
922 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
923 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
924 MutexLocker mu(Compile_lock);
925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
926 return mh->queued_for_compilation();
927 WB_END
928
929 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
930 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
931 return false; // Intrinsic is not available on a non-existent compilation level.
932 }
933 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
934 if (comp == nullptr) {
935 // Could have compLevel == 0, or !TieredCompilation and incompatible values of TieredStopAtLevel and compLevel.
936 tty->print_cr("WB error: no compiler for requested compilation level %d", compLevel);
937 return false;
938 }
939
940 jmethodID method_id, compilation_context_id;
941 method_id = reflected_method_to_jmid(thread, env, method);
942 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
943 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
944
945 if (compilation_context != nullptr) {
946 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
947 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
948 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
949 CompilerDirectiveMatcher matcher(cch, compLevel);
950 return comp->is_intrinsic_available(mh, matcher.directive_set());
951 } else {
952 // Calling with null matches default directive
953 CompilerDirectiveMatcher default_directive(comp);
954 return comp->is_intrinsic_available(mh, default_directive.directive_set());
955 }
956 WB_END
957
958 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
959 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
960 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
961 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
962 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
963 return (code != nullptr ? code->comp_level() : CompLevel_none);
964 WB_END
965
966 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
967 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
968 CHECK_JNI_EXCEPTION(env);
969 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
970 if (is_osr) {
971 mh->set_not_osr_compilable("WhiteBox", comp_level);
972 } else {
973 mh->set_not_compilable("WhiteBox", comp_level);
974 }
975 WB_END
976
977 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
978 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
979 CHECK_JNI_EXCEPTION_(env, 0);
980 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
981 uint cnt = 0;
982 MethodData* mdo = mh->method_data();
983 if (mdo != nullptr) {
984 cnt = mdo->decompile_count();
985 }
986 return cnt;
987 WB_END
988
989 // Get the trap count of a method for a specific reason. If the trap count for
990 // that reason did overflow, this includes the overflow trap count of the method.
991 // If 'reason' is null, the sum of the traps for all reasons will be returned.
992 // This number includes the overflow trap count if the trap count for any reason
993 // did overflow.
994 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
995 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
996 CHECK_JNI_EXCEPTION_(env, 0);
997 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
998 uint cnt = 0;
999 MethodData* mdo = mh->method_data();
1000 if (mdo != nullptr) {
1001 ResourceMark rm(THREAD);
1002 char* reason_str = (reason_obj == nullptr) ?
1003 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1004 bool overflow = false;
1005 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
1006 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
1007 cnt = mdo->trap_count(reason);
1008 // Count in the overflow trap count on overflow
1009 if (cnt == (uint)-1) {
1010 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
1011 }
1012 break;
1013 } else if (reason_str == nullptr) {
1014 uint c = mdo->trap_count(reason);
1015 if (c == (uint)-1) {
1016 c = mdo->trap_count_limit();
1017 if (!overflow) {
1018 // Count overflow trap count just once
1019 overflow = true;
1020 c += mdo->overflow_trap_count();
1021 }
1022 }
1023 cnt += c;
1024 }
1025 }
1026 }
1027 return cnt;
1028 WB_END
1029
1030 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1031 if (reason_obj == nullptr && action_obj == nullptr) {
1032 return Deoptimization::total_deoptimization_count();
1033 }
1034 ResourceMark rm(THREAD);
1035 const char *reason_str = (reason_obj == nullptr) ?
1036 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1037 const char *action_str = (action_obj == nullptr) ?
1038 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1039
1040 return Deoptimization::deoptimization_count(reason_str, action_str);
1041 WB_END
1042
1043 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1044 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1045 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1046 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1047 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1048 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1049 WB_END
1050
1051 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1052 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1053 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1054 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1055 bool result = mh->dont_inline();
1056 mh->set_dont_inline(value == JNI_TRUE);
1057 return result;
1058 WB_END
1059
1060 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1061 if (comp_level == CompLevel_any) {
1062 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1063 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1064 } else {
1065 return CompileBroker::queue_size(comp_level);
1066 }
1067 WB_END
1068
1069 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1070 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1071 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1072 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1073 bool result = mh->force_inline();
1074 mh->set_force_inline(value == JNI_TRUE);
1075 return result;
1076 WB_END
1077
1078 #ifdef LINUX
1079 bool WhiteBox::validate_cgroup(bool cgroups_v2_enabled,
1080 const char* controllers_file,
1081 const char* proc_self_cgroup,
1082 const char* proc_self_mountinfo,
1083 u1* cg_flags) {
1084 CgroupInfo cg_infos[CG_INFO_LENGTH];
1085 return CgroupSubsystemFactory::determine_type(cg_infos, cgroups_v2_enabled, controllers_file,
1086 proc_self_cgroup,
1087 proc_self_mountinfo, cg_flags);
1088 }
1089 #endif
1090
1091 bool WhiteBox::is_asan_enabled() {
1092 #ifdef ADDRESS_SANITIZER
1093 return true;
1094 #else
1095 return false;
1096 #endif
1097 }
1098
1099 bool WhiteBox::is_ubsan_enabled() {
1100 #ifdef UNDEFINED_BEHAVIOR_SANITIZER
1101 return true;
1102 #else
1103 return false;
1104 #endif
1105 }
1106
1107 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1108 // Screen for unavailable/bad comp level or null method
1109 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1110 if (method == nullptr) {
1111 tty->print_cr("WB error: request to compile null method");
1112 return false;
1113 }
1114 if (method->is_abstract()) {
1115 tty->print_cr("WB error: request to compile abstract method");
1116 return false;
1117 }
1118 if (comp_level > CompilationPolicy::highest_compile_level()) {
1119 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1120 return false;
1121 }
1122 if (comp == nullptr) {
1123 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1124 return false;
1125 }
1126
1127 // Check if compilation is blocking
1128 methodHandle mh(THREAD, method);
1129 CompilerDirectiveMatcher matcher(mh, comp_level);
1130 bool is_blocking = !matcher.directive_set()->BackgroundCompilationOption;
1131
1132 // Compile method and check result
1133 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1134 MutexLocker mu(THREAD, Compile_lock);
1135 bool is_queued = mh->queued_for_compilation();
1136 if ((!is_blocking && is_queued) || nm != nullptr) {
1137 return true;
1138 }
1139 // Check code again because compilation may be finished before Compile_lock is acquired.
1140 if (bci == InvocationEntryBci) {
1141 nmethod* code = mh->code();
1142 if (code != nullptr) {
1143 return true;
1144 }
1145 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1146 return true;
1147 }
1148 tty->print("WB error: failed to%s compile at level %d method ", is_blocking ? " blocking" : "", comp_level);
1149 mh->print_short_name(tty);
1150 tty->cr();
1151 if (is_blocking && is_queued) {
1152 tty->print_cr("WB error: blocking compilation is still in queue!");
1153 }
1154 return false;
1155 }
1156
1157 size_t WhiteBox::get_in_use_monitor_count() {
1158 return ObjectSynchronizer::_in_use_list.count();
1159 }
1160
1161 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1162 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1163 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1164 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1165 WB_END
1166
1167 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1168 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1169 Method* clinit = ik->class_initializer();
1170 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1171 return false;
1172 }
1173 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1174 WB_END
1175
1176 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1177 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1178 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1179
1180 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1181 CompilerDirectiveMatcher matcher(mh, comp_level);
1182 return matcher.directive_set()->PrintAssemblyOption;
1183 WB_END
1184
1185 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1186 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1187 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1188
1189 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1190
1191 ResourceMark rm(THREAD);
1192 const char* error_msg = nullptr;
1193 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1194 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1195
1196 if (m == nullptr) {
1197 assert(error_msg != nullptr, "Always have an error message");
1198 tty->print_cr("Got error: %s", error_msg);
1199 return -1; // Pattern failed
1200 }
1201
1202 // Pattern works - now check if it matches
1203 int result;
1204 if (m->match(mh, InlineMatcher::force_inline)) {
1205 result = 2; // Force inline match
1206 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1207 result = 1; // Dont inline match
1208 } else {
1209 result = 0; // No match
1210 }
1211 delete m;
1212 return result;
1213 WB_END
1214
1215 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1216 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1217 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1218
1219 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1220
1221 ResourceMark rm;
1222 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1223
1224 const char* error_msg = nullptr;
1225
1226 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1227 if (m == nullptr) {
1228 assert(error_msg != nullptr, "Must have error_msg");
1229 tty->print_cr("Got error: %s", error_msg);
1230 return -1;
1231 }
1232
1233 // Pattern works - now check if it matches
1234 int result = m->matches(mh);
1235 delete m;
1236 assert(result == 0 || result == 1, "Result out of range");
1237 return result;
1238 WB_END
1239
1240 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1241 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1242 CHECK_JNI_EXCEPTION(env);
1243 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1244
1245 MethodData* mdo = mh->method_data();
1246 if (mdo == nullptr) {
1247 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1248 mdo = mh->method_data();
1249 }
1250 mdo->init();
1251 InvocationCounter* icnt = mdo->invocation_counter();
1252 InvocationCounter* bcnt = mdo->backedge_counter();
1253 // set i-counter according to CompilationPolicy::is_method_profiled
1254 icnt->set(Tier4MinInvocationThreshold);
1255 bcnt->set(Tier4CompileThreshold);
1256 WB_END
1257
1258 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1259 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1260 CHECK_JNI_EXCEPTION(env);
1261 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1262 MutexLocker mu(THREAD, Compile_lock);
1263 MethodData* mdo = mh->method_data();
1264 MethodCounters* mcs = mh->method_counters();
1265
1266 if (mdo != nullptr) {
1267 mdo->init();
1268 ResourceMark rm(THREAD);
1269 int arg_size = mdo->method()->size_of_parameters();
1270 for (int i = 0; i < arg_size; i++) {
1271 mdo->set_arg_modified(i, 0);
1272 }
1273 mdo->clean_method_data(/*always_clean*/true);
1274 }
1275
1276 mh->clear_is_not_c1_compilable();
1277 mh->clear_is_not_c2_compilable();
1278 mh->clear_is_not_c2_osr_compilable();
1279 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1280 if (mcs != nullptr) {
1281 mcs->clear_counters();
1282 }
1283 WB_END
1284
1285 template <typename T, int type_enum>
1286 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1287 if (name == nullptr) {
1288 return false;
1289 }
1290 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1291 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1292 CHECK_JNI_EXCEPTION_(env, false);
1293 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1294 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1295 env->ReleaseStringUTFChars(name, flag_name);
1296 return (result == JVMFlag::SUCCESS);
1297 }
1298
1299 template <typename T, int type_enum>
1300 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1301 if (name == nullptr) {
1302 return false;
1303 }
1304 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1305 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1306 CHECK_JNI_EXCEPTION_(env, false);
1307 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1308 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1309 env->ReleaseStringUTFChars(name, flag_name);
1310 return (result == JVMFlag::SUCCESS);
1311 }
1312
1313 template <typename T>
1314 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1315 ResourceMark rm(thread);
1316 jclass clazz = env->FindClass(name->as_C_string());
1317 CHECK_JNI_EXCEPTION_(env, nullptr);
1318 jmethodID methodID = env->GetStaticMethodID(clazz,
1319 vmSymbols::valueOf_name()->as_C_string(),
1320 sig->as_C_string());
1321 CHECK_JNI_EXCEPTION_(env, nullptr);
1322 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1323 CHECK_JNI_EXCEPTION_(env, nullptr);
1324 return result;
1325 }
1326
1327 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1328 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1329 }
1330 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1331 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1332 }
1333 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1334 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1335 }
1336 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1337 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1338 }*/
1339 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1340 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1341 }
1342
1343 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1344 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1345 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1346 CHECK_JNI_EXCEPTION_(env, nullptr);
1347 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1348 env->ReleaseStringUTFChars(name, flag_name);
1349 return result;
1350 }
1351
1352 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1353 const JVMFlag* flag = getVMFlag(thread, env, name);
1354 return (flag != nullptr) && flag->is_constant_in_binary();
1355 WB_END
1356
1357 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1358 const JVMFlag* flag = getVMFlag(thread, env, name);
1359 return (flag != nullptr) && flag->is_default();
1360 WB_END
1361
1362 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1363 const JVMFlag* flag = getVMFlag(thread, env, name);
1364 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1365 WB_END
1366
1367 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1368 bool result;
1369 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1370 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1371 return booleanBox(thread, env, result);
1372 }
1373 return nullptr;
1374 WB_END
1375
1376 template <typename T, int type_enum>
1377 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1378 T result;
1379 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1380 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1381 return longBox(thread, env, result);
1382 }
1383 return nullptr;
1384 }
1385
1386 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1387 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1388 WB_END
1389
1390 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1391 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1392 WB_END
1393
1394 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1395 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1396 WB_END
1397
1398 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1399 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1400 WB_END
1401
1402 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1403 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1404 WB_END
1405
1406 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1407 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1408 WB_END
1409
1410 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1411 double result;
1412 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1413 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1414 return doubleBox(thread, env, result);
1415 }
1416 return nullptr;
1417 WB_END
1418
1419 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1420 ccstr ccstrResult;
1421 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1422 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1423 jstring result = env->NewStringUTF(ccstrResult);
1424 CHECK_JNI_EXCEPTION_(env, nullptr);
1425 return result;
1426 }
1427 return nullptr;
1428 WB_END
1429
1430 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1431 bool result = value == JNI_TRUE ? true : false;
1432 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1433 WB_END
1434
1435 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1436 int result = checked_cast<int>(value);
1437 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1438 WB_END
1439
1440 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1441 uint result = checked_cast<uint>(value);
1442 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1443 WB_END
1444
1445 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1446 intx result = value;
1447 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1448 WB_END
1449
1450 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1451 uintx result = value;
1452 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1453 WB_END
1454
1455 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1456 uint64_t result = value;
1457 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1458 WB_END
1459
1460 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1461 size_t result = value;
1462 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1463 WB_END
1464
1465 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1466 double result = value;
1467 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1468 WB_END
1469
1470 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1471 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1472 const char* ccstrValue;
1473 if (value == nullptr) {
1474 ccstrValue = nullptr;
1475 }
1476 else {
1477 ccstrValue = env->GetStringUTFChars(value, nullptr);
1478 CHECK_JNI_EXCEPTION(env);
1479 }
1480 {
1481 ccstr param = ccstrValue;
1482 ThreadInVMfromNative ttvfn(thread); // back to VM
1483 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1484 assert(param == nullptr, "old value is freed automatically and not returned");
1485 }
1486 }
1487 if (value != nullptr) {
1488 env->ReleaseStringUTFChars(value, ccstrValue);
1489 }
1490 WB_END
1491
1492 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1493 WhiteBox::compilation_locked = true;
1494 WB_END
1495
1496 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1497 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1498 WhiteBox::compilation_locked = false;
1499 mo.notify_all();
1500 WB_END
1501
1502 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1503 ResourceMark rm(THREAD);
1504 int len;
1505 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1506 return (StringTable::lookup(name, len) != nullptr);
1507 WB_END
1508
1509 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1510 Universe::heap()->collect(GCCause::_wb_full_gc);
1511 WB_END
1512
1513 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1514 Universe::heap()->collect(GCCause::_wb_young_gc);
1515 WB_END
1516
1517 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1518 // static+volatile in order to force the read to happen
1519 // (not be eliminated by the compiler)
1520 static char c;
1521 static volatile char* p;
1522
1523 p = os::reserve_memory(os::vm_allocation_granularity(), mtTest);
1524 if (p == nullptr) {
1525 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1526 }
1527
1528 c = *p;
1529 WB_END
1530
1531 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1532 const char* features = VM_Version::cpu_info_string();
1533 ThreadToNativeFromVM ttn(thread);
1534 jstring features_string = env->NewStringUTF(features);
1535
1536 CHECK_JNI_EXCEPTION_(env, nullptr);
1537
1538 return features_string;
1539 WB_END
1540
1541 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1542 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1543 return CodeCache::get_code_heap(code)->code_blob_type();
1544 }
1545
1546 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1547 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1548 return CodeCache::get_code_heap(blob_type);
1549 }
1550
1551 struct CodeBlobStub {
1552 CodeBlobStub(const CodeBlob* blob) :
1553 name(os::strdup(blob->name())),
1554 size(blob->size()),
1555 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1556 address((jlong) blob),
1557 code_begin((jlong) blob->code_begin()),
1558 is_nmethod((jboolean) blob->is_nmethod()) { }
1559 ~CodeBlobStub() { os::free((void*) name); }
1560 const char* const name;
1561 const jint size;
1562 const jint blob_type;
1563 const jlong address;
1564 const jlong code_begin;
1565 const jboolean is_nmethod;
1566 };
1567
1568 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1569 ResourceMark rm;
1570 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1571 CHECK_JNI_EXCEPTION_(env, nullptr);
1572 jobjectArray result = env->NewObjectArray(6, clazz, nullptr);
1573
1574 jstring name = env->NewStringUTF(cb->name);
1575 CHECK_JNI_EXCEPTION_(env, nullptr);
1576 env->SetObjectArrayElement(result, 0, name);
1577
1578 jobject obj = integerBox(thread, env, cb->size);
1579 CHECK_JNI_EXCEPTION_(env, nullptr);
1580 env->SetObjectArrayElement(result, 1, obj);
1581
1582 obj = integerBox(thread, env, cb->blob_type);
1583 CHECK_JNI_EXCEPTION_(env, nullptr);
1584 env->SetObjectArrayElement(result, 2, obj);
1585
1586 obj = longBox(thread, env, cb->address);
1587 CHECK_JNI_EXCEPTION_(env, nullptr);
1588 env->SetObjectArrayElement(result, 3, obj);
1589
1590 obj = longBox(thread, env, cb->code_begin);
1591 CHECK_JNI_EXCEPTION_(env, nullptr);
1592 env->SetObjectArrayElement(result, 4, obj);
1593
1594 obj = booleanBox(thread, env, cb->is_nmethod);
1595 CHECK_JNI_EXCEPTION_(env, nullptr);
1596 env->SetObjectArrayElement(result, 5, obj);
1597
1598 return result;
1599 }
1600
1601 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1602 ResourceMark rm(THREAD);
1603 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1604 CHECK_JNI_EXCEPTION_(env, nullptr);
1605 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1606 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1607 jobjectArray result = nullptr;
1608 if (code == nullptr) {
1609 return result;
1610 }
1611 int comp_level = code->comp_level();
1612 int insts_size = code->insts_size();
1613
1614 ThreadToNativeFromVM ttn(thread);
1615 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1616 CHECK_JNI_EXCEPTION_(env, nullptr);
1617 result = env->NewObjectArray(5, clazz, nullptr);
1618 if (result == nullptr) {
1619 return result;
1620 }
1621
1622 CodeBlobStub stub(code);
1623 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1624 CHECK_JNI_EXCEPTION_(env, nullptr);
1625 env->SetObjectArrayElement(result, 0, codeBlob);
1626
1627 jobject level = integerBox(thread, env, comp_level);
1628 CHECK_JNI_EXCEPTION_(env, nullptr);
1629 env->SetObjectArrayElement(result, 1, level);
1630
1631 jbyteArray insts = env->NewByteArray(insts_size);
1632 CHECK_JNI_EXCEPTION_(env, nullptr);
1633 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1634 env->SetObjectArrayElement(result, 2, insts);
1635
1636 jobject id = integerBox(thread, env, code->compile_id());
1637 CHECK_JNI_EXCEPTION_(env, nullptr);
1638 env->SetObjectArrayElement(result, 3, id);
1639
1640 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1641 CHECK_JNI_EXCEPTION_(env, nullptr);
1642 env->SetObjectArrayElement(result, 4, entry_point);
1643
1644 return result;
1645 WB_END
1646
1647 WB_ENTRY(void, WB_RelocateNMethodFromMethod(JNIEnv* env, jobject o, jobject method, jint blob_type))
1648 ResourceMark rm(THREAD);
1649 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1650 CHECK_JNI_EXCEPTION(env);
1651 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1652 nmethod* code = mh->code();
1653 if (code != nullptr) {
1654 MutexLocker ml_Compile_lock(Compile_lock);
1655 CompiledICLocker ic_locker(code);
1656 MutexLocker ml_CodeCache_lock(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1657 code->relocate(static_cast<CodeBlobType>(blob_type));
1658 }
1659 WB_END
1660
1661 WB_ENTRY(void, WB_RelocateNMethodFromAddr(JNIEnv* env, jobject o, jlong addr, jint blob_type))
1662 ResourceMark rm(THREAD);
1663 CHECK_JNI_EXCEPTION(env);
1664 void* address = (void*) addr;
1665
1666 if (address == nullptr) {
1667 return;
1668 }
1669
1670 MutexLocker ml_Compile_lock(Compile_lock);
1671 MutexLocker ml_CompiledIC_lock(CompiledIC_lock, Mutex::_no_safepoint_check_flag);
1672 MutexLocker ml_CodeCache_lock(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1673
1674 // Verify that nmethod address is still valid
1675 CodeBlob* blob = CodeCache::find_blob(address);
1676 if (blob != nullptr && blob->is_nmethod()) {
1677 nmethod* code = blob->as_nmethod();
1678 if (code->is_in_use() && !code->is_unloading()) {
1679 CompiledICLocker ic_locker(code);
1680 code->relocate(static_cast<CodeBlobType>(blob_type));
1681 }
1682 }
1683 WB_END
1684
1685 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1686 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1687 BufferBlob* blob;
1688 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1689 if (full_size < size) {
1690 full_size += align_up(size - full_size, oopSize);
1691 }
1692 {
1693 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1694 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1695 if (blob != nullptr) {
1696 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1697 }
1698 }
1699 // Track memory usage statistic after releasing CodeCache_lock
1700 MemoryService::track_code_cache_memory_usage();
1701 return blob;
1702 }
1703
1704 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1705 if (size < 0) {
1706 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1707 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1708 }
1709 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1710 WB_END
1711
1712 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1713 if (addr == 0) {
1714 return;
1715 }
1716 BufferBlob::free((BufferBlob*) addr);
1717 WB_END
1718
1719 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1720 ResourceMark rm;
1721 GrowableArray<CodeBlobStub*> blobs;
1722 {
1723 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1724 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1725 if (heap == nullptr) {
1726 return nullptr;
1727 }
1728 for (CodeBlob* cb = (CodeBlob*) heap->first();
1729 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1730 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1731 new (stub) CodeBlobStub(cb);
1732 blobs.append(stub);
1733 }
1734 }
1735 ThreadToNativeFromVM ttn(thread);
1736 jobjectArray result = nullptr;
1737 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1738 CHECK_JNI_EXCEPTION_(env, nullptr);
1739 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1740 CHECK_JNI_EXCEPTION_(env, nullptr);
1741 if (result == nullptr) {
1742 return result;
1743 }
1744 int i = 0;
1745 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1746 it != blobs.end(); ++it) {
1747 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1748 CHECK_JNI_EXCEPTION_(env, nullptr);
1749 env->SetObjectArrayElement(result, i, obj);
1750 CHECK_JNI_EXCEPTION_(env, nullptr);
1751 ++i;
1752 }
1753 return result;
1754 WB_END
1755
1756 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1757 return CompileBroker::get_compilation_activity_mode();
1758 WB_END
1759
1760 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1761 if (addr == 0) {
1762 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1763 "WB_GetCodeBlob: addr is null");
1764 }
1765 ThreadToNativeFromVM ttn(thread);
1766 CodeBlobStub stub((CodeBlob*) addr);
1767 return codeBlob2objectArray(thread, env, &stub);
1768 WB_END
1769
1770 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1771 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1772 CHECK_JNI_EXCEPTION_(env, 0);
1773 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1774 return (jlong) mh->method_data();
1775 WB_END
1776
1777 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1778 return (jlong) thread->stack_size();
1779 WB_END
1780
1781 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1782 return (jlong) thread->stack_overflow_state()->stack_available(
1783 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1784 WB_END
1785
1786
1787 int WhiteBox::array_bytes_to_length(size_t bytes) {
1788 return Array<u1>::bytes_to_length(bytes);
1789 }
1790
1791 ///////////////
1792 // MetaspaceTestContext and MetaspaceTestArena
1793 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1794 assert(is_aligned(commit_limit, BytesPerWord),
1795 "WB_CreateMetaspaceTestContext: commit_limit is not a multiple of the system word byte size");
1796 assert(is_aligned(reserve_limit, BytesPerWord),
1797 "WB_CreateMetaspaceTestContext: reserve_limit is not a multiple of the system word byte size");
1798 metaspace::MetaspaceTestContext* context =
1799 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit / BytesPerWord,
1800 (size_t) reserve_limit / BytesPerWord);
1801 return (jlong)p2i(context);
1802 WB_END
1803
1804 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1805 delete (metaspace::MetaspaceTestContext*) context;
1806 WB_END
1807
1808 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1809 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1810 context0->purge_area();
1811 WB_END
1812
1813 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1814 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1815 context0->print_on(tty);
1816 WB_END
1817
1818 WB_ENTRY(jlong, WB_GetTotalCommittedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1819 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1820 return (jlong)context0->committed_words() * BytesPerWord;
1821 WB_END
1822
1823 WB_ENTRY(jlong, WB_GetTotalUsedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1824 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1825 return (jlong)context0->used_words() * BytesPerWord;
1826 WB_END
1827
1828 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1829 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ClassMirrorHolderMetaspaceType : Metaspace::StandardMetaspaceType;
1830 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1831 return (jlong)p2i(context0->create_arena(type));
1832 WB_END
1833
1834 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1835 delete (metaspace::MetaspaceTestArena*) arena;
1836 WB_END
1837
1838 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong size))
1839 assert(is_aligned(size, BytesPerWord),
1840 "WB_AllocateFromMetaspaceTestArena: size is not a multiple of the system word byte size");
1841 metaspace::MetaspaceTestArena *arena0 = (metaspace::MetaspaceTestArena *)arena;
1842 MetaWord *p = arena0->allocate((size_t) size / BytesPerWord);
1843 return (jlong)p2i(p);
1844 WB_END
1845
1846 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong size))
1847 assert(is_aligned(size, BytesPerWord),
1848 "WB_DeallocateToMetaspaceTestArena: size is not a multiple of the system word byte size");
1849 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1850 arena0->deallocate((MetaWord*)p, (size_t) size / BytesPerWord);
1851 WB_END
1852
1853 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1854 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1855 WB_END
1856
1857 WB_ENTRY(jlong, WB_WordSize(JNIEnv* env))
1858 return (jlong)BytesPerWord;
1859 WB_END
1860
1861 WB_ENTRY(jlong, WB_RootChunkWordSize(JNIEnv* env))
1862 return (jlong)Metaspace::reserve_alignment_words();
1863 WB_END
1864
1865 WB_ENTRY(jboolean, WB_IsStaticallyLinked(JNIEnv* env, jobject wb))
1866 return JVM_IsStaticallyLinked();
1867 WB_END
1868
1869 //////////////
1870
1871 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1872 if (size < 0) {
1873 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1874 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1875 }
1876
1877 oop class_loader_oop = JNIHandles::resolve(class_loader);
1878 ClassLoaderData* cld = class_loader_oop != nullptr
1879 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1880 : ClassLoaderData::the_null_class_loader_data();
1881
1882 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1883
1884 return (jlong)(uintptr_t)metadata;
1885 WB_END
1886
1887 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1888 jstring version, jstring location, jobjectArray packages))
1889 Handle h_module (THREAD, JNIHandles::resolve(module));
1890 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1891 WB_END
1892
1893 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1894 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1895 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1896 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1897 WB_END
1898
1899 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1900 Handle h_module (THREAD, JNIHandles::resolve(module));
1901 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1902 WB_END
1903
1904 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1905 Handle h_module (THREAD, JNIHandles::resolve(module));
1906 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1907 WB_END
1908
1909 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1910 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1911 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1912 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1913 WB_END
1914
1915 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1916 if (inc < 0) {
1917 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1918 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1919 }
1920
1921 jlong max_size_t = (jlong) ((size_t) -1);
1922 if (inc > max_size_t) {
1923 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1924 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1925 }
1926
1927 size_t new_cap_until_GC = 0;
1928 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1929 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1930 if (!success) {
1931 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1932 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1933 "due to contention with another thread");
1934 }
1935 return (jlong) new_cap_until_GC;
1936 WB_END
1937
1938 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1939 return (jlong) MetaspaceGC::capacity_until_GC();
1940 WB_END
1941
1942 // The function is only valid when CDS is available.
1943 WB_ENTRY(jlong, WB_AOTMetaspaceRegionAlignment(JNIEnv* env, jobject wb))
1944 #if INCLUDE_CDS
1945 return (jlong)AOTMetaspace::core_region_alignment();
1946 #else
1947 ShouldNotReachHere();
1948 return 0L;
1949 #endif
1950 WB_END
1951
1952 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1953 oop obj_oop = JNIHandles::resolve(obj);
1954 return (jboolean) obj_oop->mark().has_monitor();
1955 WB_END
1956
1957 WB_ENTRY(jboolean, WB_IsAsanEnabled(JNIEnv* env))
1958 return (jboolean) WhiteBox::is_asan_enabled();
1959 WB_END
1960
1961 WB_ENTRY(jboolean, WB_IsUbsanEnabled(JNIEnv* env))
1962 return (jboolean) WhiteBox::is_ubsan_enabled();
1963 WB_END
1964
1965 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1966 return (jlong) WhiteBox::get_in_use_monitor_count();
1967 WB_END
1968
1969 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1970 return (jint) LockStack::CAPACITY;
1971 WB_END
1972
1973 WB_ENTRY(jboolean, WB_supportsRecursiveFastLocking(JNIEnv* env))
1974 return (jboolean) VM_Version::supports_recursive_fast_locking();
1975 WB_END
1976
1977 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1978 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1979 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1980 WB_END
1981
1982 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1983 VM_ForceSafepoint force_safepoint_op;
1984 VMThread::execute(&force_safepoint_op);
1985 WB_END
1986
1987 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1988 nullStream dev_null;
1989 ClassLoaderStatsVMOperation force_op(&dev_null);
1990 VMThread::execute(&force_op);
1991 WB_END
1992
1993 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1994 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
1995 return (jlong) ik->constants();
1996 WB_END
1997
1998 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1999 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2000 objArrayOop resolved_refs= ik->constants()->resolved_references();
2001 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
2002 WB_END
2003
2004 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
2005 oop aoop = JNIHandles::resolve(thing);
2006 if (!aoop->is_instance()) {
2007 return nullptr;
2008 }
2009 instanceHandle ih(THREAD, (instanceOop) aoop);
2010 InstanceKlass* klass = InstanceKlass::cast(ih->klass());
2011 if (klass->nonstatic_oop_map_count() == 0) {
2012 return nullptr;
2013 }
2014 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
2015 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
2016 int oop_count = 0;
2017 while (map < end) {
2018 oop_count += map->count();
2019 map++;
2020 }
2021
2022 refArrayHandle result_array =
2023 oopFactory::new_refArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL);
2024 map = klass->start_of_nonstatic_oop_maps();
2025 int index = 0;
2026 while (map < end) {
2027 int offset = map->offset();
2028 for (unsigned int j = 0; j < map->count(); j++) {
2029 result_array->obj_at_put(index++, ih->obj_field(offset));
2030 offset += heapOopSize;
2031 }
2032 map++;
2033 }
2034 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
2035 WB_END
2036
2037 // Collect Object oops but not value objects...loaded from heap
2038 class CollectObjectOops : public BasicOopIterateClosure {
2039 public:
2040 GrowableArray<Handle>* _array;
2041
2042 CollectObjectOops() {
2043 _array = new GrowableArray<Handle>(128);
2044 }
2045
2046 void add_oop(oop o) {
2047 Handle oh = Handle(Thread::current(), o);
2048 if (oh != nullptr && oh->is_inline_type()) {
2049 oh->oop_iterate(this);
2050 } else {
2051 _array->append(oh);
2052 }
2053 }
2054
2055 template <class T> inline void add_oop(T* p) { add_oop(HeapAccess<>::oop_load(p)); }
2056 void do_oop(oop* o) { add_oop(o); }
2057 void do_oop(narrowOop* v) { add_oop(v); }
2058
2059 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
2060 refArrayHandle result_array =
2061 oopFactory::new_refArray_handle(vmClasses::Object_klass(), _array->length(), CHECK_NULL);
2062 for (int i = 0 ; i < _array->length(); i++) {
2063 result_array->obj_at_put(i, _array->at(i)());
2064 }
2065 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
2066 }
2067 };
2068
2069 // Collect Object oops but not value objects...loaded from frames
2070 class CollectFrameObjectOops : public BasicOopIterateClosure {
2071 public:
2072 CollectObjectOops _collect;
2073
2074 template <class T> inline void add_oop(T* p) { _collect.add_oop(RawAccess<>::oop_load(p)); }
2075 void do_oop(oop* o) { add_oop(o); }
2076 void do_oop(narrowOop* v) { add_oop(v); }
2077
2078 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
2079 return _collect.create_jni_result(env, THREAD);
2080 }
2081 };
2082
2083 // Collect Object oops for the given oop, iterate through value objects
2084 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
2085 ResourceMark rm(thread);
2086 Handle objh(thread, JNIHandles::resolve(thing));
2087 CollectObjectOops collectOops;
2088 objh->oop_iterate(&collectOops);
2089 return collectOops.create_jni_result(env, THREAD);
2090 WB_END
2091
2092 // Collect Object oops for the given frame deep, iterate through value objects
2093 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
2094 KeepStackGCProcessedMark ksgcpm(THREAD);
2095 ResourceMark rm(THREAD);
2096 CollectFrameObjectOops collectOops;
2097 StackFrameStream sfs(thread, true /* update */, true /* process_frames */);
2098 while (depth > 0) { // Skip the native WB API frame
2099 sfs.next();
2100 frame* f = sfs.current();
2101 f->oops_do(&collectOops, nullptr, sfs.register_map());
2102 depth--;
2103 }
2104 return collectOops.create_jni_result(env, THREAD);
2105 WB_END
2106
2107 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
2108 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2109 ConstantPool* cp = ik->constants();
2110 if (cp->cache() == nullptr) {
2111 return -1;
2112 }
2113 return cp->resolved_field_entries_length();
2114 WB_END
2115
2116 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2117 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2118 ConstantPool* cp = ik->constants();
2119 if (cp->cache() == nullptr) {
2120 return -1;
2121 }
2122 return cp->resolved_field_entry_at(index)->constant_pool_index();
2123 WB_END
2124
2125 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
2126 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2127 ConstantPool* cp = ik->constants();
2128 if (cp->cache() == nullptr) {
2129 return -1;
2130 }
2131 return cp->resolved_method_entries_length();
2132 WB_END
2133
2134 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2135 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2136 ConstantPool* cp = ik->constants();
2137 if (cp->cache() == nullptr) {
2138 return -1;
2139 }
2140 return cp->resolved_method_entry_at(index)->constant_pool_index();
2141 WB_END
2142
2143 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
2144 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2145 ConstantPool* cp = ik->constants();
2146 if (cp->cache() == nullptr) {
2147 return -1;
2148 }
2149 return cp->resolved_indy_entries_length();
2150 WB_END
2151
2152 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2153 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(klass));
2154 ConstantPool* cp = ik->constants();
2155 if (cp->cache() == nullptr) {
2156 return -1;
2157 }
2158 return cp->resolved_indy_entry_at(index)->constant_pool_index();
2159 WB_END
2160
2161 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
2162 ThreadToNativeFromVM ttnfv(thread);
2163 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2164 ResourceMark rm;
2165 stringStream st;
2166 {
2167 ThreadInVMfromNative ttvfn(thread); // back to VM
2168 ClassPrinter::print_classes(c, flags, &st);
2169 }
2170 jstring result = env->NewStringUTF(st.freeze());
2171 CHECK_JNI_EXCEPTION_(env, nullptr);
2172 return result;
2173 WB_END
2174
2175 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
2176 ThreadToNativeFromVM ttnfv(thread);
2177 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2178 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
2179 ResourceMark rm;
2180 stringStream st;
2181 {
2182 ThreadInVMfromNative ttvfn(thread); // back to VM
2183 ClassPrinter::print_methods(c, m, flags, &st);
2184 }
2185 jstring result = env->NewStringUTF(st.freeze());
2186 CHECK_JNI_EXCEPTION_(env, nullptr);
2187 return result;
2188 WB_END
2189
2190 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
2191 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
2192 VMThread::execute(&clear_ics);
2193 WB_END
2194
2195 template <typename T>
2196 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
2197 assert(value != nullptr, "sanity");
2198 if (method == nullptr || name == nullptr) {
2199 return false;
2200 }
2201 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2202 CHECK_JNI_EXCEPTION_(env, false);
2203 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2204 // can't be in VM when we call JNI
2205 ThreadToNativeFromVM ttnfv(thread);
2206 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2207 CHECK_JNI_EXCEPTION_(env, false);
2208 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
2209 env->ReleaseStringUTFChars(name, flag_name);
2210 if (option == CompileCommandEnum::Unknown) {
2211 return false;
2212 }
2213 if (!CompilerOracle::option_matches_type(option, *value)) {
2214 return false;
2215 }
2216 return CompilerOracle::has_option_value(mh, option, *value);
2217 }
2218
2219 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2220 bool result;
2221 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2222 // can't be in VM when we call JNI
2223 ThreadToNativeFromVM ttnfv(thread);
2224 return booleanBox(thread, env, result);
2225 }
2226 return nullptr;
2227 WB_END
2228
2229 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2230 intx result;
2231 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2232 // can't be in VM when we call JNI
2233 ThreadToNativeFromVM ttnfv(thread);
2234 return longBox(thread, env, result);
2235 }
2236 return nullptr;
2237 WB_END
2238
2239 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2240 uintx result;
2241 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2242 // can't be in VM when we call JNI
2243 ThreadToNativeFromVM ttnfv(thread);
2244 return longBox(thread, env, result);
2245 }
2246 return nullptr;
2247 WB_END
2248
2249 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2250 double result;
2251 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2252 // can't be in VM when we call JNI
2253 ThreadToNativeFromVM ttnfv(thread);
2254 return doubleBox(thread, env, result);
2255 }
2256 return nullptr;
2257 WB_END
2258
2259 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2260 ccstr ccstrResult;
2261 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2262 // can't be in VM when we call JNI
2263 ThreadToNativeFromVM ttnfv(thread);
2264 jstring result = env->NewStringUTF(ccstrResult);
2265 CHECK_JNI_EXCEPTION_(env, nullptr);
2266 return result;
2267 }
2268 return nullptr;
2269 WB_END
2270
2271 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2272 const char* p = CDSConfig::default_archive_path();
2273 ThreadToNativeFromVM ttn(thread);
2274 jstring path_string = env->NewStringUTF(p);
2275
2276 CHECK_JNI_EXCEPTION_(env, nullptr);
2277
2278 return path_string;
2279 WB_END
2280
2281 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2282 return CDSConfig::is_using_archive();
2283 WB_END
2284
2285 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2286 #if INCLUDE_CDS
2287 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2288 #else
2289 ShouldNotReachHere();
2290 return (jint)-1;
2291 #endif
2292 WB_END
2293
2294 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2295 #if INCLUDE_CDS
2296 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2297 #else
2298 ShouldNotReachHere();
2299 return (jint)-1;
2300 #endif
2301 WB_END
2302
2303 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2304 return FileMapInfo::memory_mapping_failed();
2305 WB_END
2306
2307 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2308 return (jboolean)AOTMetaspace::in_aot_cache(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2309 WB_END
2310
2311 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2312 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2313 if (!k->is_instance_klass()) {
2314 return;
2315 }
2316 InstanceKlass *ik = InstanceKlass::cast(k);
2317 ik->link_class(THREAD); // may throw verification error
2318 WB_END
2319
2320 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2321 return AOTMappedHeapLoader::is_mapped();
2322 WB_END
2323
2324 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2325 #if INCLUDE_CDS
2326 // An exploded build inhibits use of CDS. Therefore, for the
2327 // purpose of testing, the JVM can be treated as not having CDS
2328 // built in at all.
2329 return ClassLoader::has_jrt_entry();
2330 #else
2331 return false;
2332 #endif // INCLUDE_CDS
2333 WB_END
2334
2335 static bool canWriteJavaHeapArchive() {
2336 return !CDSConfig::are_vm_options_incompatible_with_dumping_heap();
2337 }
2338
2339 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2340 return canWriteJavaHeapArchive();
2341 WB_END
2342
2343 WB_ENTRY(jboolean, WB_CanWriteMappedJavaHeapArchive(JNIEnv* env))
2344 return canWriteJavaHeapArchive() && !AOTStreamableObjects;
2345 WB_END
2346
2347 WB_ENTRY(jboolean, WB_CanWriteStreamedJavaHeapArchive(JNIEnv* env))
2348 return canWriteJavaHeapArchive() && AOTStreamableObjects;
2349 WB_END
2350
2351 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2352 #if INCLUDE_JFR
2353 return true;
2354 #else
2355 return false;
2356 #endif // INCLUDE_JFR
2357 WB_END
2358
2359 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2360 #if defined(DTRACE_ENABLED)
2361 return true;
2362 #else
2363 return false;
2364 #endif // DTRACE_ENABLED
2365 WB_END
2366
2367 #if INCLUDE_CDS
2368
2369 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2370 ResourceMark rm;
2371 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2372 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2373 return result;
2374 WB_END
2375
2376 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2377 ResourceMark rm;
2378 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2379 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2380 return result;
2381 WB_END
2382
2383 #endif // INCLUDE_CDS
2384
2385 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2386 class ReadMonitorsHandshakeClosure : public HandshakeClosure {
2387 jboolean _executed;
2388
2389 void do_thread(Thread* th) {
2390 JavaThread* jt = JavaThread::cast(th);
2391 ResourceMark rm;
2392
2393 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2394
2395 if (!jt->has_last_Java_frame()) {
2396 return;
2397 }
2398 RegisterMap rmap(jt,
2399 RegisterMap::UpdateMap::include,
2400 RegisterMap::ProcessFrames::include,
2401 RegisterMap::WalkContinuation::skip);
2402 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2403 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2404 if (monitors != nullptr) {
2405 int len = monitors->length();
2406 // Walk monitors youngest to oldest
2407 for (int i = len - 1; i >= 0; i--) {
2408 MonitorInfo* mon_info = monitors->at(i);
2409 if (mon_info->eliminated()) continue;
2410 oop owner = mon_info->owner();
2411 if (owner != nullptr) {
2412 info->append(mon_info);
2413 }
2414 }
2415 }
2416 }
2417 _executed = true;
2418 }
2419
2420 public:
2421 ReadMonitorsHandshakeClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2422 jboolean executed() const { return _executed; }
2423 };
2424
2425 ReadMonitorsHandshakeClosure rmhc;
2426 if (thread_handle != nullptr) {
2427 ThreadsListHandle tlh;
2428 JavaThread* target = nullptr;
2429 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2430 if (is_alive) {
2431 Handshake::execute(&rmhc, &tlh, target);
2432 }
2433 }
2434 return rmhc.executed();
2435 WB_END
2436
2437 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2438 class TraceSelfHandshakeClosure : public HandshakeClosure {
2439 jint _num_threads_completed;
2440
2441 void do_thread(Thread* th) {
2442 JavaThread* jt = JavaThread::cast(th);
2443 ResourceMark rm;
2444
2445 jt->print_on(tty);
2446 jt->print_stack_on(tty);
2447 tty->cr();
2448 AtomicAccess::inc(&_num_threads_completed);
2449 }
2450
2451 public:
2452 TraceSelfHandshakeClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2453
2454 jint num_threads_completed() const { return _num_threads_completed; }
2455 };
2456 TraceSelfHandshakeClosure tshc(Thread::current());
2457
2458 if (all_threads) {
2459 Handshake::execute(&tshc);
2460 } else if (thread_handle != nullptr) {
2461 ThreadsListHandle tlh;
2462 JavaThread* target = nullptr;
2463 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2464 if (is_alive) {
2465 Handshake::execute(&tshc, &tlh, target);
2466 }
2467 }
2468 return tshc.num_threads_completed();
2469 WB_END
2470
2471 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2472 class TraceSelfHandshakeClosure : public AsyncHandshakeClosure {
2473 JavaThread* _self;
2474 void do_thread(Thread* th) {
2475 assert(th->is_Java_thread(), "sanity");
2476 // AsynchHandshake handshakes are only executed by target.
2477 assert(_self == th, "Must be");
2478 assert(Thread::current() == th, "Must be");
2479 JavaThread* jt = JavaThread::cast(th);
2480 ResourceMark rm;
2481 jt->print_on(tty);
2482 jt->print_stack_on(tty);
2483 tty->cr();
2484 }
2485
2486 public:
2487 TraceSelfHandshakeClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2488 };
2489 if (thread_handle != nullptr) {
2490 ThreadsListHandle tlh;
2491 JavaThread* target = nullptr;
2492 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2493 if (is_alive) {
2494 TraceSelfHandshakeClosure* tshc = new TraceSelfHandshakeClosure(target);
2495 Handshake::execute(tshc, target);
2496 }
2497 }
2498 WB_END
2499
2500 static volatile int _emulated_lock = 0;
2501
2502 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2503 JavaThread* self = JavaThread::current();
2504
2505 {
2506 // Before trying to acquire the lock transition into a safepoint safe state.
2507 // Otherwise if either suspender or suspendee blocks for a safepoint
2508 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2509 // the lock without allowing the safepoint to progress.
2510 ThreadBlockInVM tbivm(self);
2511
2512 // We will deadlock here if we are 'suspender' and 'suspendee'
2513 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2514 // at the right place.
2515 while (AtomicAccess::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2516 assert(_emulated_lock == 1, "Must be locked");
2517
2518 // Sleep much longer in suspendee to force situation where
2519 // 'suspender' is waiting above to acquire lock.
2520 os::naked_short_sleep(suspender ? 1 : 10);
2521 }
2522 AtomicAccess::store(&_emulated_lock, 0);
2523 WB_END
2524
2525 // Some convenience methods to deal with objects from java
2526 int WhiteBox::offset_for_field(const char* field_name, oop object,
2527 Symbol* signature_symbol) {
2528 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2529
2530 //Only non-array oops have fields. Don't call this function on arrays!
2531 InstanceKlass* ik = InstanceKlass::cast(object->klass());
2532
2533 //Create symbols to look for in the class
2534 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2535
2536 //To be filled in with an offset of the field we're looking for
2537 fieldDescriptor fd;
2538
2539 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2540 if (res == nullptr) {
2541 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2542 name_symbol->as_C_string());
2543 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2544 }
2545
2546 //fetch the field at the offset we've found
2547 int dest_offset = fd.offset();
2548
2549 return dest_offset;
2550 }
2551
2552
2553 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2554 int offset = offset_for_field(field_name, object,
2555 vmSymbols::string_signature());
2556 oop string = object->obj_field(offset);
2557 if (string == nullptr) {
2558 return nullptr;
2559 }
2560 const char* ret = java_lang_String::as_utf8_string(string);
2561 return ret;
2562 }
2563
2564 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2565 int offset =
2566 offset_for_field(field_name, object, vmSymbols::bool_signature());
2567 bool ret = (object->bool_field(offset) == JNI_TRUE);
2568 return ret;
2569 }
2570
2571 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2572 ResourceMark rm;
2573 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2574 const char* klass_name = klass->external_name();
2575
2576 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2577
2578 // one by one registration natives for exception catching
2579 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2580 CHECK_JNI_EXCEPTION(env);
2581 for (int i = 0, n = method_count; i < n; ++i) {
2582 // Skip dummy entries
2583 if (method_array[i].fnPtr == nullptr) continue;
2584 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2585 jthrowable throwable_obj = env->ExceptionOccurred();
2586 if (throwable_obj != nullptr) {
2587 env->ExceptionClear();
2588 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2589 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2590 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2591 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2592 klass_name, method_array[i].name, method_array[i].signature);
2593 }
2594 } else {
2595 // Registration failed unexpectedly.
2596 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2597 klass_name, method_array[i].name, method_array[i].signature);
2598 env->UnregisterNatives(wbclass);
2599 break;
2600 }
2601 }
2602 }
2603 }
2604
2605 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2606 // can't be in VM when we call JNI
2607 ThreadToNativeFromVM ttnfv(thread);
2608 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2609 CHECK_JNI_EXCEPTION_(env, 0);
2610 int ret;
2611 {
2612 ThreadInVMfromNative ttvfn(thread); // back to VM
2613 ret = DirectivesParser::parse_string(dir, tty);
2614 }
2615 env->ReleaseStringUTFChars(compDirect, dir);
2616 // -1 for error parsing directive. Return 0 as number of directives added.
2617 if (ret == -1) {
2618 ret = 0;
2619 }
2620 return (jint) ret;
2621 WB_END
2622
2623 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2624 DirectivesStack::pop(count);
2625 WB_END
2626
2627 // Checks that the library libfile has the noexecstack bit set.
2628 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2629 jboolean ret = false;
2630 #ifdef LINUX
2631 // Can't be in VM when we call JNI.
2632 ThreadToNativeFromVM ttnfv(thread);
2633 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2634 CHECK_JNI_EXCEPTION_(env, 0);
2635 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2636 env->ReleaseStringUTFChars(libfile, lf);
2637 #endif
2638 return ret;
2639 WB_END
2640
2641 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2642 return os::is_containerized();
2643 WB_END
2644
2645 // Physical memory of the host machine (including containers)
2646 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2647 return static_cast<jlong>(os::Machine::physical_memory());
2648 WB_END
2649
2650 // Available memory of the host machine (container-aware)
2651 WB_ENTRY(jlong, WB_HostAvailableMemory(JNIEnv* env, jobject o))
2652 physical_memory_size_type avail_mem = 0;
2653 // Return value ignored - defaulting to 0 on failure.
2654 (void)os::available_memory(avail_mem);
2655 return static_cast<jlong>(avail_mem);
2656 WB_END
2657
2658 // Physical swap of the host machine (including containers), Linux only.
2659 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2660 #ifdef LINUX
2661 physical_memory_size_type swap_val = 0;
2662 if (!os::Linux::host_swap(swap_val)) {
2663 return -1; // treat as unlimited
2664 }
2665 return static_cast<jlong>(swap_val);
2666 #endif
2667 return -1; // Not used/implemented on other platforms
2668 WB_END
2669
2670 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2671 jobject o,
2672 jboolean cgroups_v2_enabled,
2673 jstring controllers_file,
2674 jstring proc_self_cgroup,
2675 jstring proc_self_mountinfo))
2676 jint ret = 0;
2677 #ifdef LINUX
2678 ThreadToNativeFromVM ttnfv(thread);
2679 const char* c_file = env->GetStringUTFChars(controllers_file, nullptr);
2680 CHECK_JNI_EXCEPTION_(env, 0);
2681 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2682 CHECK_JNI_EXCEPTION_(env, 0);
2683 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2684 CHECK_JNI_EXCEPTION_(env, 0);
2685 u1 cg_type_flags = 0;
2686 // This sets cg_type_flags
2687 WhiteBox::validate_cgroup(cgroups_v2_enabled, c_file, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2688 ret = (jint)cg_type_flags;
2689 env->ReleaseStringUTFChars(controllers_file, c_file);
2690 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2691 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2692 #endif
2693 return ret;
2694 WB_END
2695
2696 // Available cpus of the host machine, Linux only.
2697 // Used in container testing.
2698 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2699 LINUX_ONLY(return os::Linux::active_processor_count();)
2700 return -1; // Not used/implemented on other platforms
2701 WB_END
2702
2703 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2704 os::print_os_info(tty);
2705 WB_END
2706
2707 // Elf decoder
2708 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2709 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2710 ElfFile::_do_not_cache_elf_section = true;
2711 #endif
2712 WB_END
2713
2714 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2715 return (jlong) ResolvedMethodTable::items_count();
2716 WB_END
2717
2718 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2719 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2720 // Return size in bytes.
2721 return k->size() * wordSize;
2722 WB_END
2723
2724 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2725 // It explains how the thread's priority field is used for test state coordination.
2726 //
2727 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2728 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2729 jlong tid = java_lang_Thread::thread_id(target_oop);
2730 JavaThread* target = java_lang_Thread::thread(target_oop);
2731
2732 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2733 ThreadsListHandle tlh;
2734
2735 // Look up the target thread by tid to ensure it is present
2736 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2737 if (t == nullptr) {
2738 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2739 }
2740
2741 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2742 // Allow target to terminate by boosting priority
2743 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2744
2745 // Now wait for the target to terminate
2746 while (!target->is_terminated()) {
2747 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2748 os::naked_short_sleep(0);
2749 }
2750
2751 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2752
2753 // Now release the GC inducing thread - we have to re-resolve the external oop that
2754 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2755 oop original = JNIHandles::resolve_non_null(target_handle);
2756 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2757
2758 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2759
2760 // The Java code should be creating garbage and triggering GC, which would potentially move
2761 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2762 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2763 // kick in.
2764 for (int i = 0; i < 5; i++) {
2765 oop original = JNIHandles::resolve_non_null(target_handle);
2766 oop current = t->threadObj();
2767 if (original != current) {
2768 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2769 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2770 } else {
2771 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2772 ThreadBlockInVM tbivm(thread);
2773 os::naked_short_sleep(50);
2774 }
2775 }
2776 WB_END
2777
2778 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2779 ResourceMark rm; // for verify
2780 stringStream st;
2781 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2782 frame* current_frame = fst.current();
2783 if (log) {
2784 current_frame->print_value_on(&st);
2785 }
2786 current_frame->verify(fst.register_map());
2787 }
2788 if (log) {
2789 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2790 tty->print_raw(st.freeze());
2791 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2792 }
2793 WB_END
2794
2795 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2796 #if INCLUDE_JVMTI
2797 return JNI_TRUE;
2798 #else
2799 return JNI_FALSE;
2800 #endif
2801 WB_END
2802
2803 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2804 os::naked_short_sleep(time);
2805 WB_END
2806
2807 WB_ENTRY(void, WB_BusyWaitCPUTime(JNIEnv* env, jobject wb, jint time))
2808 ThreadToNativeFromVM ttn(thread);
2809 u8 start = os::current_thread_cpu_time();
2810 u8 target_duration = time * (u8)1000000;
2811 while (os::current_thread_cpu_time() - start < target_duration) {
2812 for (volatile int i = 0; i < 1000000; i++);
2813 }
2814 WB_END
2815
2816 WB_ENTRY(jboolean, WB_CPUSamplerSetOutOfStackWalking(JNIEnv* env, jobject wb, jboolean enable))
2817 #if defined(ASSERT) && INCLUDE_JFR && defined(LINUX)
2818 return JfrCPUTimeThreadSampling::set_out_of_stack_walking_enabled(enable == JNI_TRUE) ? JNI_TRUE : JNI_FALSE;
2819 #else
2820 return JNI_FALSE;
2821 #endif
2822 WB_END
2823
2824 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2825 ThreadToNativeFromVM ttn(thread);
2826 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2827 CHECK_JNI_EXCEPTION_(env, nullptr);
2828 return info_string;
2829 WB_END
2830
2831 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2832 #if INCLUDE_G1GC
2833 if (!UseG1GC) {
2834 ShouldNotReachHere();
2835 return;
2836 }
2837 oop obj = JNIHandles::resolve(o);
2838 G1CollectedHeap::heap()->pin_object(thread, obj);
2839 #else
2840 ShouldNotReachHere();
2841 #endif // INCLUDE_G1GC
2842 WB_END
2843
2844 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2845 #if INCLUDE_G1GC
2846 if (!UseG1GC) {
2847 ShouldNotReachHere();
2848 return;
2849 }
2850 oop obj = JNIHandles::resolve(o);
2851 G1CollectedHeap::heap()->unpin_object(thread, obj);
2852 #else
2853 ShouldNotReachHere();
2854 #endif // INCLUDE_G1GC
2855 WB_END
2856
2857 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2858 if (!Continuations::enabled()) {
2859 tty->print_cr("WB error: must be Continuations::enabled()!");
2860 return JNI_FALSE;
2861 }
2862 jboolean result = false;
2863 #if INCLUDE_JVMTI
2864 if (enable) {
2865 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2866 } else {
2867 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2868 }
2869 #endif
2870 return result;
2871 WB_END
2872
2873 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2874 void* const from = (void*)addr;
2875 void* const to = (void*)(addr + size);
2876 if (from > to) {
2877 os::pretouch_memory(from, to, os::vm_page_size());
2878 }
2879 WB_END
2880
2881 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2882 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2883 WB_END
2884
2885 // Reports resident set size (RSS) in bytes
2886 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2887 return os::rss();
2888 WB_END
2889
2890 WB_ENTRY(void, WB_ControlledCrash(JNIEnv* env, jobject o, jint how))
2891 #ifdef ASSERT
2892 VMError::controlled_crash(how);
2893 #else
2894 THROW_MSG(vmSymbols::java_lang_UnsupportedOperationException(), "Only available in debug builds");
2895 #endif
2896 WB_END
2897
2898 #define CC (char*)
2899
2900 static JNINativeMethod methods[] = {
2901 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2902 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2903 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2904 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2905 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2906 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2907 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2908 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2909 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2910 {CC"shipsFullDebugInfo", CC"()Z", (void*)&WB_ShipDebugInfoFull},
2911 {CC"shipsPublicDebugInfo", CC"()Z", (void*)&WB_ShipDebugInfoPublic},
2912 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2913 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2914 {CC"parseCommandLine0",
2915 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2916 (void*) &WB_ParseCommandLine
2917 },
2918 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2919 (void*)&WB_AddToBootstrapClassLoaderSearch},
2920 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2921 (void*)&WB_AddToSystemClassLoaderSearch},
2922 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2923 (void*)&WB_GetCompressedOopsMaxHeapSize},
2924 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2925 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2926 {CC"decodeNKlassAndAccessKlass",CC"(I)V", (void*)&WB_DecodeNKlassAndAccessKlass},
2927 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2928 #if INCLUDE_CDS
2929 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2930 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2931 #endif
2932 #if INCLUDE_G1GC
2933 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2934 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2935 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2936 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2937 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2938 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2939 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2940 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2941 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2942 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2943 (void*)&WB_G1AuxiliaryMemoryUsage },
2944 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2945 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2946 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2947 #endif // INCLUDE_G1GC
2948 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2949 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2950 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2951 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2952 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2953 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2954 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2955 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2956 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2957 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2958 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2959 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2960 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2961 {CC"isC2Included", CC"()Z", (void*)&WB_isC2Included },
2962 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2963 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2964 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2965 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2966 (void*)&WB_DeoptimizeMethod },
2967 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2968 (void*)&WB_IsMethodCompiled },
2969 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2970 (void*)&WB_IsMethodCompilable},
2971 {CC"isMethodQueuedForCompilation0",
2972 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2973 {CC"isIntrinsicAvailable0",
2974 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2975 (void*)&WB_IsIntrinsicAvailable},
2976 {CC"makeMethodNotCompilable0",
2977 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2978 {CC"testSetDontInlineMethod0",
2979 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2980 {CC"getMethodCompilationLevel0",
2981 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2982 {CC"getMethodDecompileCount0",
2983 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2984 {CC"getMethodTrapCount0",
2985 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2986 (void*)&WB_GetMethodTrapCount},
2987 {CC"getDeoptCount0",
2988 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2989 {CC"getMethodEntryBci0",
2990 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2991 {CC"getCompileQueueSize",
2992 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2993 {CC"testSetForceInlineMethod0",
2994 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2995 {CC"enqueueMethodForCompilation0",
2996 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2997 {CC"enqueueInitializerForCompilation0",
2998 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2999 {CC"markMethodProfiled",
3000 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
3001 {CC"clearMethodState0",
3002 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
3003 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
3004 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
3005 {CC"matchesMethod",
3006 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
3007 (void*)&WB_MatchesMethod},
3008 {CC"matchesInline",
3009 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
3010 (void*)&WB_MatchesInline},
3011 {CC"shouldPrintAssembly",
3012 CC"(Ljava/lang/reflect/Executable;I)Z",
3013 (void*)&WB_ShouldPrintAssembly},
3014
3015 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
3016 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
3017 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
3018 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
3019 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
3020 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
3021 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
3022 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
3023 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
3024 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
3025 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
3026 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
3027 (void*)&WB_SetStringVMFlag},
3028 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
3029 (void*)&WB_GetBooleanVMFlag},
3030 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3031 (void*)&WB_GetIntVMFlag},
3032 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3033 (void*)&WB_GetUintVMFlag},
3034 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3035 (void*)&WB_GetIntxVMFlag},
3036 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3037 (void*)&WB_GetUintxVMFlag},
3038 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3039 (void*)&WB_GetUint64VMFlag},
3040 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
3041 (void*)&WB_GetSizeTVMFlag},
3042 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
3043 (void*)&WB_GetDoubleVMFlag},
3044 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
3045 (void*)&WB_GetStringVMFlag},
3046 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
3047 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
3048 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
3049 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
3050 {CC"allocateMetaspace",
3051 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
3052 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
3053 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
3054 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_AOTMetaspaceRegionAlignment },
3055 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
3056 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
3057 (void*)&WB_GetNMethod },
3058 {CC"relocateNMethodFromMethod0", CC"(Ljava/lang/reflect/Executable;I)V",
3059 (void*)&WB_RelocateNMethodFromMethod },
3060 {CC"relocateNMethodFromAddr", CC"(JI)V", (void*)&WB_RelocateNMethodFromAddr },
3061 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
3062 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
3063 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
3064 {CC"getCompilationActivityMode",
3065 CC"()I", (void*)&WB_GetCompilationActivityMode},
3066 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
3067 (void*)&WB_GetMethodData },
3068 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
3069 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
3070 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
3071 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
3072 (void*)&WB_DefineModule },
3073 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
3074 (void*)&WB_AddModuleExports },
3075 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
3076 (void*)&WB_AddReadsModule },
3077 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
3078 (void*)&WB_AddModuleExportsToAllUnnamed },
3079 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
3080 (void*)&WB_AddModuleExportsToAll },
3081 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
3082 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
3083 {CC"isAsanEnabled", CC"()Z", (void*)&WB_IsAsanEnabled },
3084 {CC"isUbsanEnabled", CC"()Z", (void*)&WB_IsUbsanEnabled },
3085 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
3086 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
3087 {CC"supportsRecursiveFastLocking", CC"()Z", (void*)&WB_supportsRecursiveFastLocking },
3088 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
3089 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
3090 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
3091 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
3092 {CC"getObjectsViaKlassOopMaps0",
3093 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
3094 {CC"getObjectsViaOopIterator0",
3095 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
3096 {CC"getObjectsViaFrameOopIterator",
3097 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
3098 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
3099 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
3100 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
3101 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
3102 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
3103 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
3104 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
3105 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
3106 {CC"getMethodBooleanOption",
3107 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
3108 (void*)&WB_GetMethodBooleaneOption},
3109 {CC"getMethodIntxOption",
3110 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
3111 (void*)&WB_GetMethodIntxOption},
3112 {CC"getMethodUintxOption",
3113 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
3114 (void*)&WB_GetMethodUintxOption},
3115 {CC"getMethodDoubleOption",
3116 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
3117 (void*)&WB_GetMethodDoubleOption},
3118 {CC"getMethodStringOption",
3119 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
3120 (void*)&WB_GetMethodStringOption},
3121 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
3122 (void*)&WB_GetDefaultArchivePath},
3123 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
3124 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
3125 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
3126 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
3127 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
3128 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
3129 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
3130 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
3131 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
3132 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
3133 {CC"canWriteMappedJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteMappedJavaHeapArchive },
3134 {CC"canWriteStreamedJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteStreamedJavaHeapArchive },
3135 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
3136
3137 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
3138 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
3139 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
3140 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
3141 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
3142 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
3143 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
3144 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
3145 (void*)&WB_AddCompilerDirective },
3146 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
3147 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
3148 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
3149 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
3150 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
3151 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
3152 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
3153 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
3154 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
3155 (void*)&WB_ConcurrentGCRunTo},
3156 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
3157 (void*)&WB_CheckLibSpecifiesNoexecstack},
3158 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
3159 {CC"validateCgroup",
3160 CC"(ZLjava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
3161 (void*)&WB_ValidateCgroup },
3162 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
3163 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
3164 {CC"hostAvailableMemory", CC"()J", (void*)&WB_HostAvailableMemory },
3165 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
3166 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
3167 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
3168 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
3169 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
3170
3171 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
3172 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
3173 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
3174 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
3175 {CC"getTotalCommittedBytesInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedBytesInMetaspaceTestContext},
3176 {CC"getTotalUsedBytesInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedBytesInMetaspaceTestContext},
3177 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
3178 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
3179 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
3180 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
3181 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
3182
3183 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
3184 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
3185 {CC"busyWaitCPUTime", CC"(I)V", (void*)&WB_BusyWaitCPUTime},
3186 {CC"cpuSamplerSetOutOfStackWalking", CC"(Z)Z", (void*)&WB_CPUSamplerSetOutOfStackWalking},
3187 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
3188
3189 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
3190 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
3191 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
3192 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
3193 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
3194 {CC"rss", CC"()J", (void*)&WB_Rss},
3195 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString},
3196 {CC"lockAndStuckInSafepoint", CC"()V", (void*)&WB_TakeLockAndHangInSafepoint},
3197 {CC"getMinimumJavaStackSize", CC"()J", (void*)&WB_GetMinimumJavaStackSize},
3198 {CC"wordSize", CC"()J", (void*)&WB_WordSize},
3199 {CC"rootChunkWordSize", CC"()J", (void*)&WB_RootChunkWordSize},
3200 {CC"isStatic", CC"()Z", (void*)&WB_IsStaticallyLinked},
3201 {CC"controlledCrash",CC"(I)V", (void*)&WB_ControlledCrash},
3202 };
3203
3204 #undef CC
3205
3206 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
3207 {
3208 if (WhiteBoxAPI) {
3209 // Make sure that wbclass is loaded by the null classloader
3210 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(JNIHandles::resolve(wbclass));
3211 Handle loader(THREAD, ik->class_loader());
3212 if (loader.is_null()) {
3213 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
3214 WhiteBox::set_used();
3215 }
3216 }
3217 }
3218 JVM_END