1 /*
2 * Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "cds.h"
26 #include "cds/archiveHeapLoader.hpp"
27 #include "cds/cdsConstants.hpp"
28 #include "cds/filemap.hpp"
29 #include "cds/heapShared.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/classLoader.hpp"
32 #include "classfile/classLoaderDataGraph.hpp"
33 #include "classfile/classLoaderStats.hpp"
34 #include "classfile/classPrinter.hpp"
35 #include "classfile/javaClasses.inline.hpp"
36 #include "classfile/modules.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/codeCache.hpp"
42 #include "compiler/compilationPolicy.hpp"
43 #include "compiler/compilerOracle.hpp"
44 #include "compiler/directivesParser.hpp"
45 #include "compiler/methodMatcher.hpp"
46 #include "gc/shared/concurrentGCBreakpoints.hpp"
47 #include "gc/shared/gcConfig.hpp"
48 #include "gc/shared/genArguments.hpp"
49 #include "jvm.h"
50 #include "jvmtifiles/jvmtiEnv.hpp"
51 #include "logging/log.hpp"
52 #include "memory/iterator.hpp"
53 #include "memory/memoryReserver.hpp"
54 #include "memory/metadataFactory.hpp"
55 #include "memory/metaspace/testHelpers.hpp"
56 #include "memory/metaspaceUtils.hpp"
57 #include "memory/oopFactory.hpp"
58 #include "memory/resourceArea.hpp"
59 #include "memory/universe.hpp"
60 #include "nmt/mallocSiteTable.hpp"
61 #include "oops/array.hpp"
62 #include "oops/compressedOops.hpp"
63 #include "oops/constantPool.inline.hpp"
64 #include "oops/klass.inline.hpp"
65 #include "oops/method.inline.hpp"
66 #include "oops/methodData.inline.hpp"
67 #include "oops/objArrayKlass.hpp"
68 #include "oops/objArrayOop.inline.hpp"
69 #include "oops/oop.inline.hpp"
70 #include "oops/typeArrayOop.inline.hpp"
71 #include "prims/jvmtiEnvBase.hpp"
72 #include "prims/resolvedMethodTable.hpp"
73 #include "prims/wbtestmethods/parserTests.hpp"
74 #include "prims/whitebox.inline.hpp"
75 #include "runtime/arguments.hpp"
76 #include "runtime/atomic.hpp"
77 #include "runtime/deoptimization.hpp"
78 #include "runtime/fieldDescriptor.inline.hpp"
79 #include "runtime/flags/jvmFlag.hpp"
80 #include "runtime/flags/jvmFlagAccess.hpp"
81 #include "runtime/frame.inline.hpp"
82 #include "runtime/handles.inline.hpp"
83 #include "runtime/handshake.hpp"
84 #include "runtime/interfaceSupport.inline.hpp"
85 #include "runtime/javaCalls.hpp"
86 #include "runtime/javaThread.inline.hpp"
87 #include "runtime/jniHandles.inline.hpp"
88 #include "runtime/lockStack.hpp"
89 #include "runtime/os.hpp"
90 #include "runtime/stackFrameStream.inline.hpp"
91 #include "runtime/synchronizer.hpp"
92 #include "runtime/threadSMR.hpp"
93 #include "runtime/vframe.hpp"
94 #include "runtime/vm_version.hpp"
95 #include "services/memoryService.hpp"
96 #include "utilities/align.hpp"
97 #include "utilities/checkedCast.hpp"
98 #include "utilities/debug.hpp"
99 #include "utilities/elfFile.hpp"
100 #include "utilities/exceptions.hpp"
101 #include "utilities/macros.hpp"
102 #include "utilities/nativeCallStack.hpp"
103 #include "utilities/ostream.hpp"
104 #if INCLUDE_G1GC
105 #include "gc/g1/g1Arguments.hpp"
106 #include "gc/g1/g1CollectedHeap.inline.hpp"
107 #include "gc/g1/g1ConcurrentMark.hpp"
108 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
109 #include "gc/g1/g1HeapRegionManager.hpp"
110 #include "gc/g1/g1HeapRegionRemSet.inline.hpp"
111 #endif // INCLUDE_G1GC
112 #if INCLUDE_PARALLELGC
113 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
114 #endif // INCLUDE_PARALLELGC
115 #if INCLUDE_SERIALGC
116 #include "gc/serial/serialHeap.hpp"
117 #endif // INCLUDE_SERIALGC
118 #if INCLUDE_ZGC
119 #include "gc/z/zAddress.inline.hpp"
120 #endif // INCLUDE_ZGC
121 #if INCLUDE_JVMCI
122 #include "jvmci/jvmciEnv.hpp"
123 #include "jvmci/jvmciRuntime.hpp"
124 #endif
125 #ifdef LINUX
126 #include "cgroupSubsystem_linux.hpp"
127 #include "osContainer_linux.hpp"
128 #include "os_linux.hpp"
129 #endif
130
131 #define CHECK_JNI_EXCEPTION_(env, value) \
132 do { \
133 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
134 THREAD->clear_pending_jni_exception_check(); \
135 if (HAS_PENDING_EXCEPTION) { \
136 return(value); \
137 } \
138 } while (0)
139
140 #define CHECK_JNI_EXCEPTION(env) \
141 do { \
142 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
143 THREAD->clear_pending_jni_exception_check(); \
144 if (HAS_PENDING_EXCEPTION) { \
145 return; \
146 } \
147 } while (0)
148
149 bool WhiteBox::_used = false;
150 volatile bool WhiteBox::compilation_locked = false;
151
152 class VM_WhiteBoxOperation : public VM_Operation {
153 public:
154 VM_WhiteBoxOperation() { }
155 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
156 bool allow_nested_vm_operations() const { return true; }
157 };
158
159
160 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
161 return (jlong)(void*)JNIHandles::resolve(obj);
162 WB_END
163
164 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
165 return heapOopSize;
166 WB_END
167
168 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
169 return (jint)os::vm_page_size();
170 WB_END
171
172 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
173 return os::vm_allocation_granularity();
174 WB_END
175
176 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
177 return os::large_page_size();
178 WB_END
179
180 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length))
181 ResourceMark rm(THREAD);
182 stringStream sb;
183 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length);
184 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD);
185 return (jstring) JNIHandles::make_local(THREAD, result);
186 WB_END
187
188 WB_ENTRY(jint, WB_TakeLockAndHangInSafepoint(JNIEnv* env, jobject wb))
189 JavaThread* self = JavaThread::current();
190 // VMStatistic_lock is used to minimize interference with VM locking
191 MutexLocker mu(VMStatistic_lock);
192 VM_HangInSafepoint force_safepoint_stuck_op;
193 VMThread::execute(&force_safepoint_stuck_op);
194 ShouldNotReachHere();
195 return 0;
196 WB_END
197
198 class WBIsKlassAliveClosure : public LockedClassesDo {
199 Symbol* _name;
200 int _count;
201 public:
202 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
203
204 void do_klass(Klass* k) {
205 Symbol* ksym = k->name();
206 if (ksym->fast_compare(_name) == 0) {
207 _count++;
208 } else if (k->is_instance_klass()) {
209 // Need special handling for hidden classes because the JVM
210 // appends "+<hex-address>" to hidden class names.
211 InstanceKlass *ik = InstanceKlass::cast(k);
212 if (ik->is_hidden()) {
213 ResourceMark rm;
214 char* k_name = ksym->as_C_string();
215 // Find the first '+' char and truncate the string at that point.
216 // NOTE: This will not work correctly if the original hidden class
217 // name contains a '+'.
218 char* plus_char = strchr(k_name, '+');
219 if (plus_char != nullptr) {
220 *plus_char = 0;
221 char* c_name = _name->as_C_string();
222 if (strcmp(c_name, k_name) == 0) {
223 _count++;
224 }
225 }
226 }
227 }
228 }
229
230 int count() const {
231 return _count;
232 }
233 };
234
235 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
236 oop h_name = JNIHandles::resolve(name);
237 if (h_name == nullptr) {
238 return 0;
239 }
240 Symbol* sym = java_lang_String::as_symbol(h_name);
241 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
242
243 WBIsKlassAliveClosure closure(sym);
244 ClassLoaderDataGraph::classes_do(&closure);
245
246 // Return the count of alive classes with this name.
247 return closure.count();
248 WB_END
249
250 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
251 oop h_name = JNIHandles::resolve(name);
252 if (h_name == nullptr) {
253 return 0;
254 }
255 Symbol* sym = java_lang_String::as_symbol(h_name);
256 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
257 return (jint)sym->refcount();
258 WB_END
259
260
261 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
262 #if INCLUDE_JVMTI
263 ResourceMark rm;
264 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
265 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
266 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
267 assert(err == JVMTI_ERROR_NONE, "must not fail");
268 #endif
269 }
270 WB_END
271
272 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
273 #if INCLUDE_JVMTI
274 ResourceMark rm;
275 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
276 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
277 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
278 assert(err == JVMTI_ERROR_NONE, "must not fail");
279 #endif
280 }
281 WB_END
282
283
284 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
285 return (jlong)Arguments::max_heap_for_compressed_oops();
286 }
287 WB_END
288
289 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
290 tty->print_cr("Minimum heap %zu Initial heap %zu "
291 "Maximum heap %zu Space alignment %zu Heap alignment %zu",
292 MinHeapSize,
293 InitialHeapSize,
294 MaxHeapSize,
295 SpaceAlignment,
296 HeapAlignment);
297 }
298 WB_END
299
300 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
301 size_t granularity = os::vm_allocation_granularity();
302 ReservedHeapSpace rhs = HeapReserver::reserve(100 * granularity, granularity, os::vm_page_size(), nullptr);
303
304 // Check if constraints are complied
305 if (!( UseCompressedOops && rhs.is_reserved() &&
306 CompressedOops::base() != nullptr &&
307 CompressedOops::use_implicit_null_checks() )) {
308 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
309 "\tUseCompressedOops is %d\n"
310 "\trhs.base() is " PTR_FORMAT "\n"
311 "\tCompressedOops::base() is " PTR_FORMAT "\n"
312 "\tCompressedOops::use_implicit_null_checks() is %d",
313 UseCompressedOops,
314 p2i(rhs.base()),
315 p2i(CompressedOops::base()),
316 CompressedOops::use_implicit_null_checks());
317 return;
318 }
319
320 VirtualSpace vs;
321 vs.initialize(rhs, 50 * granularity);
322
323 tty->print_cr("Reading from no access area... ");
324 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
325 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
326 WB_END
327
328 WB_ENTRY(void, WB_DecodeNKlassAndAccessKlass(JNIEnv* env, jobject o, jint nKlass))
329 assert(UseCompressedClassPointers, "Should only call for UseCompressedClassPointers");
330 const narrowKlass nk = (narrowKlass)nKlass;
331 const Klass* const k = CompressedKlassPointers::decode_not_null_without_asserts(nKlass);
332 printf("WB_DecodeNKlassAndAccessKlass: nk %u k " PTR_FORMAT "\n", nk, p2i(k));
333 printf("Will attempt to crash now...\n");
334 fflush(stdout); // flush now - we will crash below
335 // Access k by calling a virtual function - will result in loading the vtable from *k
336 k->print_on(tty);
337 WB_END
338
339 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
340 size_t magnitude, size_t iterations) {
341 size_t granularity = os::vm_allocation_granularity();
342 ReservedHeapSpace rhs = HeapReserver::reserve(reserved_space_size * granularity, granularity, os::vm_page_size(), nullptr);
343 if (!rhs.is_reserved()) {
344 tty->print_cr("Failed to initialize ReservedSpace. Can't proceed.");
345 return 3;
346 }
347
348 VirtualSpace vs;
349 if (!vs.initialize(rhs, 0)) {
350 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
351 return 3;
352 }
353
354 int seed = os::random();
355 tty->print_cr("Random seed is %d", seed);
356
357 for (size_t i = 0; i < iterations; i++) {
358
359 // Whether we will shrink or grow
360 bool shrink = os::random() % 2L == 0;
361
362 // Get random delta to resize virtual space
363 size_t delta = (size_t)os::random() % magnitude;
364
365 // If we are about to shrink virtual space below zero, then expand instead
366 if (shrink && vs.committed_size() < delta) {
367 shrink = false;
368 }
369
370 // Resizing by delta
371 if (shrink) {
372 vs.shrink_by(delta);
373 } else {
374 // If expanding fails expand_by will silently return false
375 vs.expand_by(delta, true);
376 }
377 }
378 return 0;
379 }
380
381 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
382 jlong reserved_space_size, jlong magnitude, jlong iterations))
383 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
384 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
385 iterations);
386 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
387 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
388 return 1;
389 }
390
391 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
392 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
393 if (sizeof(size_t) < sizeof(jlong)) {
394 jlong size_t_max_value = (jlong)SIZE_MAX;
395 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
396 || iterations > size_t_max_value) {
397 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
398 return 2;
399 }
400 }
401
402 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
403 (size_t) magnitude, (size_t) iterations);
404 WB_END
405
406 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
407 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
408 WB_END
409
410 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
411 #if INCLUDE_JVMCI
412 return JVMCI::shared_library_exists();
413 #endif
414 return false;
415 WB_END
416
417 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
418 #if INCLUDE_JVMCI
419 if (EnableJVMCI) {
420 // Enter the JVMCI env that will be used by the CompileBroker.
421 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
422 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
423 }
424 #endif
425 return false;
426 WB_END
427
428 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
429 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
430 WB_END
431
432 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
433 return GCConfig::is_gc_selected_ergonomically();
434 WB_END
435
436 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
437 oop p = JNIHandles::resolve(obj);
438 #if INCLUDE_G1GC
439 if (UseG1GC) {
440 G1CollectedHeap* g1h = G1CollectedHeap::heap();
441 const G1HeapRegion* hr = g1h->heap_region_containing(p);
442 return hr->is_old_or_humongous();
443 }
444 #endif
445 #if INCLUDE_PARALLELGC
446 if (UseParallelGC) {
447 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
448 return !psh->is_in_young(p);
449 }
450 #endif
451 #if INCLUDE_ZGC
452 if (UseZGC) {
453 return ZHeap::heap()->is_old(to_zaddress(p));
454 }
455 #endif
456 #if INCLUDE_SHENANDOAHGC
457 if (UseShenandoahGC) {
458 ShenandoahHeap* sh = ShenandoahHeap::heap();
459 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
460 }
461 #endif
462 #if INCLUDE_SERIALGC
463 if (UseSerialGC) {
464 return !SerialHeap::heap()->is_in_young(p);
465 }
466 #endif
467 ShouldNotReachHere();
468 return false;
469 WB_END
470
471 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
472 oop p = JNIHandles::resolve(obj);
473 return p->size() * HeapWordSize;
474 WB_END
475
476 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
477 return (jlong)SpaceAlignment;
478 WB_END
479
480 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
481 return (jlong)HeapAlignment;
482 WB_END
483
484 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
485 return Universe::heap()->supports_concurrent_gc_breakpoints();
486 WB_END
487
488 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
489 ConcurrentGCBreakpoints::acquire_control();
490 WB_END
491
492 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
493 ConcurrentGCBreakpoints::release_control();
494 WB_END
495
496 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
497 ConcurrentGCBreakpoints::run_to_idle();
498 WB_END
499
500 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
501 Handle h_name(THREAD, JNIHandles::resolve(at));
502 ResourceMark rm;
503 const char* c_name = java_lang_String::as_utf8_string(h_name());
504 return ConcurrentGCBreakpoints::run_to(c_name);
505 WB_END
506
507 #if INCLUDE_G1GC
508
509 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
510 if (UseG1GC) {
511 G1CollectedHeap* g1h = G1CollectedHeap::heap();
512 oop result = JNIHandles::resolve(obj);
513 const G1HeapRegion* hr = g1h->heap_region_containing(result);
514 return hr->is_humongous();
515 }
516 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
517 WB_END
518
519 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
520 if (UseG1GC) {
521 G1CollectedHeap* g1h = G1CollectedHeap::heap();
522 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
523 return hr->is_humongous();
524 }
525 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
526 WB_END
527
528 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
529 if (UseG1GC) {
530 G1CollectedHeap* g1h = G1CollectedHeap::heap();
531 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
532 return hr->is_free();
533 }
534 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
535 WB_END
536
537 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
538 if (UseG1GC) {
539 G1CollectedHeap* g1h = G1CollectedHeap::heap();
540 size_t nr = g1h->max_num_regions();
541 return (jlong)nr;
542 }
543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
544 WB_END
545
546 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
547 if (UseG1GC) {
548 G1CollectedHeap* g1h = G1CollectedHeap::heap();
549 size_t nr = g1h->num_free_regions();
550 return (jlong)nr;
551 }
552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
553 WB_END
554
555 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
556 if (UseG1GC) {
557 G1CollectedHeap* g1h = G1CollectedHeap::heap();
558 return g1h->concurrent_mark()->cm_thread()->in_progress();
559 }
560 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
561 WB_END
562
563 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
564 if (UseG1GC) {
565 G1CollectedHeap* g1h = G1CollectedHeap::heap();
566 G1ConcurrentMark* cm = g1h->concurrent_mark();
567 return cm->completed_mark_cycles();
568 }
569 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
570 WB_END
571
572 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
573 if (UseG1GC) {
574 return (jint)G1HeapRegion::GrainBytes;
575 }
576 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
577 WB_END
578
579 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
580 if (UseG1GC) {
581 return G1CollectedHeap::heap()->has_uncommittable_regions();
582 }
583 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
584 WB_END
585
586 #endif // INCLUDE_G1GC
587
588 #if INCLUDE_PARALLELGC
589
590 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
591 if (UseParallelGC) {
592 return GenAlignment;
593 }
594 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
595 WB_END
596
597 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
598 if (UseParallelGC) {
599 return GenAlignment;
600 }
601 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
602 WB_END
603
604 #endif // INCLUDE_PARALLELGC
605
606 #if INCLUDE_G1GC
607
608 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
609 if (UseG1GC) {
610 ResourceMark rm(THREAD);
611 G1CollectedHeap* g1h = G1CollectedHeap::heap();
612 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
613 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
614 return JNIHandles::make_local(THREAD, h());
615 }
616 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
617 WB_END
618
619 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
620 if (UseG1GC) {
621 G1NUMA* numa = G1NUMA::numa();
622 return (jint)numa->num_active_nodes();
623 }
624 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
625 WB_END
626
627 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
628 if (UseG1GC) {
629 G1NUMA* numa = G1NUMA::numa();
630 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
631 const uint* node_ids = numa->node_ids();
632
633 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
634 for (int i = 0; i < num_node_ids; i++) {
635 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
636 }
637 return (jintArray) JNIHandles::make_local(THREAD, result);
638 }
639 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
640 WB_END
641
642 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
643
644 private:
645 const int _liveness;
646 size_t _total_count;
647 size_t _total_memory;
648 size_t _total_memory_to_free;
649
650 public:
651 OldRegionsLivenessClosure(int liveness) :
652 _liveness(liveness),
653 _total_count(0),
654 _total_memory(0),
655 _total_memory_to_free(0) { }
656
657 size_t total_count() { return _total_count; }
658 size_t total_memory() { return _total_memory; }
659 size_t total_memory_to_free() { return _total_memory_to_free; }
660
661 bool do_heap_region(G1HeapRegion* r) {
662 if (r->is_old()) {
663 size_t live = r->live_bytes();
664 size_t size = r->used();
665 size_t reg_size = G1HeapRegion::GrainBytes;
666 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
667 _total_memory += size;
668 ++_total_count;
669 if (size == reg_size) {
670 // We don't include non-full regions since they are unlikely included in mixed gc
671 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
672 _total_memory_to_free += size - live;
673 }
674 }
675 }
676 return false;
677 }
678 };
679
680
681 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
682 if (!UseG1GC) {
683 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
684 }
685 if (liveness < 0) {
686 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
687 }
688
689 G1CollectedHeap* g1h = G1CollectedHeap::heap();
690 OldRegionsLivenessClosure rli(liveness);
691 g1h->heap_region_iterate(&rli);
692
693 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
694 result->long_at_put(0, rli.total_count());
695 result->long_at_put(1, rli.total_memory());
696 result->long_at_put(2, rli.total_memory_to_free());
697 return (jlongArray) JNIHandles::make_local(THREAD, result);
698 WB_END
699
700 #endif // INCLUDE_G1GC
701
702 // Alloc memory using the test memory tag so that we can use that to see if
703 // NMT picks it up correctly
704 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
705 jlong addr = 0;
706 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
707 return addr;
708 WB_END
709
710 // Alloc memory with pseudo call stack. The test can create pseudo malloc
711 // allocation site to stress the malloc tracking.
712 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
713 address pc = (address)(size_t)pseudo_stack;
714 NativeCallStack stack(&pc, 1);
715 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
716 WB_END
717
718 // Alloc memory with pseudo call stack and specific memory tag.
719 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag))
720 address pc = (address)(size_t)pseudo_stack;
721 NativeCallStack stack(&pc, 1);
722 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack);
723 WB_END
724
725 // Free the memory allocated by NMTAllocTest
726 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
727 os::free((void*)(uintptr_t)mem);
728 WB_END
729
730 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
731 return (jlong)(uintptr_t)os::reserve_memory(size, mtTest);
732 WB_END
733
734 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
735 return (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size, mtTest);
736 WB_END
737
738 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
739 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
740 WB_END
741
742 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
743 os::uncommit_memory((char *)(uintptr_t)addr, size);
744 WB_END
745
746 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
747 os::release_memory((char *)(uintptr_t)addr, size);
748 WB_END
749
750 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
751 int hash_size = MallocSiteTable::hash_buckets();
752 assert(hash_size > 0, "NMT hash_size should be > 0");
753 return (jint)hash_size;
754 WB_END
755
756 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
757 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
758 return (jlong)arena;
759 WB_END
760
761 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
762 Arena* a = (Arena*)arena;
763 delete a;
764 WB_END
765
766 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
767 Arena* a = (Arena*)arena;
768 a->Amalloc(size_t(size));
769 WB_END
770
771 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
772 assert(method != nullptr, "method should not be null");
773 ThreadToNativeFromVM ttn(thread);
774 return env->FromReflectedMethod(method);
775 }
776
777 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
778 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
779 private:
780 int _result;
781 const bool _make_not_entrant;
782 public:
783 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
784 _result(0), _make_not_entrant(make_not_entrant) { }
785 int result() const { return _result; }
786
787 void doit() {
788 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
789 if (t->has_last_Java_frame()) {
790 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
791 frame* f = fst.current();
792 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
793 Deoptimization::deoptimize(t, *f);
794 if (_make_not_entrant) {
795 nmethod* nm = CodeCache::find_nmethod(f->pc());
796 assert(nm != nullptr, "did not find nmethod");
797 nm->make_not_entrant(nmethod::InvalidationReason::WHITEBOX_DEOPTIMIZATION);
798 }
799 ++_result;
800 }
801 }
802 }
803 }
804 }
805 };
806
807 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
808 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
809 VMThread::execute(&op);
810 return op.result();
811 WB_END
812
813 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
814 bool result = false;
815 if (thread->has_last_Java_frame()) {
816 ResourceMark rm(THREAD);
817 RegisterMap reg_map(thread,
818 RegisterMap::UpdateMap::include,
819 RegisterMap::ProcessFrames::include,
820 RegisterMap::WalkContinuation::skip);
821 javaVFrame *jvf = thread->last_java_vframe(®_map);
822 for (jint d = 0; d < depth && jvf != nullptr; d++) {
823 jvf = jvf->java_sender();
824 }
825 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
826 }
827 return result;
828 WB_END
829
830 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
831 DeoptimizationScope deopt_scope;
832 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
833 deopt_scope.deoptimize_marked();
834 WB_END
835
836 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
837 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
838 int result = 0;
839 CHECK_JNI_EXCEPTION_(env, result);
840
841 DeoptimizationScope deopt_scope;
842 {
843 MutexLocker mu(Compile_lock);
844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
845 if (is_osr) {
846 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
847 } else {
848 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
849 if (mh->code() != nullptr) {
850 deopt_scope.mark(mh->code());
851 ++result;
852 }
853 }
854 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
855 }
856
857 deopt_scope.deoptimize_marked();
858
859 return result;
860 WB_END
861
862 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
863 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
864 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
865 MutexLocker mu(Compile_lock);
866 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
867 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
868 if (code == nullptr) {
869 return JNI_FALSE;
870 }
871 return !code->is_marked_for_deoptimization();
872 WB_END
873
874 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
875 if (comp == nullptr) {
876 return true;
877 }
878 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
879 bool exclude = directive->ExcludeOption;
880 DirectivesStack::release(directive);
881 return exclude;
882 }
883
884 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
885 if (is_osr) {
886 return CompilationPolicy::can_be_osr_compiled(mh, level);
887 } else {
888 return CompilationPolicy::can_be_compiled(mh, level);
889 }
890 }
891
892 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
893 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
894 return false;
895 }
896 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
898 MutexLocker mu(Compile_lock);
899 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
900
901 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
902 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
903 // to exclude a compilation of 'method'.
904 if (comp_level == CompLevel_any) {
905 // Both compilers could have ExcludeOption set. Check all combinations.
906 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
907 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
908 if (excluded_c1 && excluded_c2) {
909 // Compilation of 'method' excluded by both compilers.
910 return false;
911 }
912
913 if (excluded_c1) {
914 // C1 only has ExcludeOption set: Check if compilable with C2.
915 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
916 } else if (excluded_c2) {
917 // C2 only has ExcludeOption set: Check if compilable with C1.
918 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
919 }
920 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
921 // Compilation of 'method' excluded by compiler used for 'comp_level'.
922 return false;
923 }
924
925 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
926 WB_END
927
928 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
929 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
931 MutexLocker mu(Compile_lock);
932 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
933 return mh->queued_for_compilation();
934 WB_END
935
936 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
937 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
938 return false; // Intrinsic is not available on a non-existent compilation level.
939 }
940 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
941 if (comp == nullptr) {
942 // Could have compLevel == 0, or !TieredCompilation and incompatible values of TieredStopAtLevel and compLevel.
943 tty->print_cr("WB error: no compiler for requested compilation level %d", compLevel);
944 return false;
945 }
946
947 jmethodID method_id, compilation_context_id;
948 method_id = reflected_method_to_jmid(thread, env, method);
949 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
951
952 DirectiveSet* directive;
953 if (compilation_context != nullptr) {
954 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
955 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
956 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
957 directive = DirectivesStack::getMatchingDirective(cch, comp);
958 } else {
959 // Calling with null matches default directive
960 directive = DirectivesStack::getDefaultDirective(comp);
961 }
962 bool result = comp->is_intrinsic_available(mh, directive);
963 DirectivesStack::release(directive);
964 return result;
965 WB_END
966
967 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
968 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
969 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
970 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
971 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
972 return (code != nullptr ? code->comp_level() : CompLevel_none);
973 WB_END
974
975 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
976 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
977 CHECK_JNI_EXCEPTION(env);
978 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
979 if (is_osr) {
980 mh->set_not_osr_compilable("WhiteBox", comp_level);
981 } else {
982 mh->set_not_compilable("WhiteBox", comp_level);
983 }
984 WB_END
985
986 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
987 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
988 CHECK_JNI_EXCEPTION_(env, 0);
989 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
990 uint cnt = 0;
991 MethodData* mdo = mh->method_data();
992 if (mdo != nullptr) {
993 cnt = mdo->decompile_count();
994 }
995 return cnt;
996 WB_END
997
998 // Get the trap count of a method for a specific reason. If the trap count for
999 // that reason did overflow, this includes the overflow trap count of the method.
1000 // If 'reason' is null, the sum of the traps for all reasons will be returned.
1001 // This number includes the overflow trap count if the trap count for any reason
1002 // did overflow.
1003 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
1004 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1005 CHECK_JNI_EXCEPTION_(env, 0);
1006 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1007 uint cnt = 0;
1008 MethodData* mdo = mh->method_data();
1009 if (mdo != nullptr) {
1010 ResourceMark rm(THREAD);
1011 char* reason_str = (reason_obj == nullptr) ?
1012 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1013 bool overflow = false;
1014 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
1015 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
1016 cnt = mdo->trap_count(reason);
1017 // Count in the overflow trap count on overflow
1018 if (cnt == (uint)-1) {
1019 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
1020 }
1021 break;
1022 } else if (reason_str == nullptr) {
1023 uint c = mdo->trap_count(reason);
1024 if (c == (uint)-1) {
1025 c = mdo->trap_count_limit();
1026 if (!overflow) {
1027 // Count overflow trap count just once
1028 overflow = true;
1029 c += mdo->overflow_trap_count();
1030 }
1031 }
1032 cnt += c;
1033 }
1034 }
1035 }
1036 return cnt;
1037 WB_END
1038
1039 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1040 if (reason_obj == nullptr && action_obj == nullptr) {
1041 return Deoptimization::total_deoptimization_count();
1042 }
1043 ResourceMark rm(THREAD);
1044 const char *reason_str = (reason_obj == nullptr) ?
1045 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1046 const char *action_str = (action_obj == nullptr) ?
1047 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1048
1049 return Deoptimization::deoptimization_count(reason_str, action_str);
1050 WB_END
1051
1052 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1053 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1054 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1055 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1056 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1057 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1058 WB_END
1059
1060 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1061 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1062 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1063 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1064 bool result = mh->dont_inline();
1065 mh->set_dont_inline(value == JNI_TRUE);
1066 return result;
1067 WB_END
1068
1069 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1070 if (comp_level == CompLevel_any) {
1071 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1072 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1073 } else {
1074 return CompileBroker::queue_size(comp_level);
1075 }
1076 WB_END
1077
1078 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1079 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1080 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1081 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1082 bool result = mh->force_inline();
1083 mh->set_force_inline(value == JNI_TRUE);
1084 return result;
1085 WB_END
1086
1087 #ifdef LINUX
1088 bool WhiteBox::validate_cgroup(bool cgroups_v2_enabled,
1089 const char* controllers_file,
1090 const char* proc_self_cgroup,
1091 const char* proc_self_mountinfo,
1092 u1* cg_flags) {
1093 CgroupInfo cg_infos[CG_INFO_LENGTH];
1094 return CgroupSubsystemFactory::determine_type(cg_infos, cgroups_v2_enabled, controllers_file,
1095 proc_self_cgroup,
1096 proc_self_mountinfo, cg_flags);
1097 }
1098 #endif
1099
1100 bool WhiteBox::is_asan_enabled() {
1101 #ifdef ADDRESS_SANITIZER
1102 return true;
1103 #else
1104 return false;
1105 #endif
1106 }
1107
1108 bool WhiteBox::is_ubsan_enabled() {
1109 #ifdef UNDEFINED_BEHAVIOR_SANITIZER
1110 return true;
1111 #else
1112 return false;
1113 #endif
1114 }
1115
1116 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1117 // Screen for unavailable/bad comp level or null method
1118 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1119 if (method == nullptr) {
1120 tty->print_cr("WB error: request to compile null method");
1121 return false;
1122 }
1123 if (method->is_abstract()) {
1124 tty->print_cr("WB error: request to compile abstract method");
1125 return false;
1126 }
1127 if (comp_level > CompilationPolicy::highest_compile_level()) {
1128 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1129 return false;
1130 }
1131 if (comp == nullptr) {
1132 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1133 return false;
1134 }
1135
1136 // Check if compilation is blocking
1137 methodHandle mh(THREAD, method);
1138 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1139 bool is_blocking = !directive->BackgroundCompilationOption;
1140 DirectivesStack::release(directive);
1141
1142 // Compile method and check result
1143 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1144 MutexLocker mu(THREAD, Compile_lock);
1145 bool is_queued = mh->queued_for_compilation();
1146 if ((!is_blocking && is_queued) || nm != nullptr) {
1147 return true;
1148 }
1149 // Check code again because compilation may be finished before Compile_lock is acquired.
1150 if (bci == InvocationEntryBci) {
1151 nmethod* code = mh->code();
1152 if (code != nullptr) {
1153 return true;
1154 }
1155 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1156 return true;
1157 }
1158 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1159 mh->print_short_name(tty);
1160 tty->cr();
1161 if (is_blocking && is_queued) {
1162 tty->print_cr("WB error: blocking compilation is still in queue!");
1163 }
1164 return false;
1165 }
1166
1167 size_t WhiteBox::get_in_use_monitor_count() {
1168 return ObjectSynchronizer::_in_use_list.count();
1169 }
1170
1171 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1172 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1173 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1174 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1175 WB_END
1176
1177 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1178 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1179 Method* clinit = ik->class_initializer();
1180 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1181 return false;
1182 }
1183 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1184 WB_END
1185
1186 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1187 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1188 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1189
1190 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1191 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1192 bool result = directive->PrintAssemblyOption;
1193 DirectivesStack::release(directive);
1194
1195 return result;
1196 WB_END
1197
1198 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1199 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1200 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1201
1202 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1203
1204 ResourceMark rm(THREAD);
1205 const char* error_msg = nullptr;
1206 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1207 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1208
1209 if (m == nullptr) {
1210 assert(error_msg != nullptr, "Always have an error message");
1211 tty->print_cr("Got error: %s", error_msg);
1212 return -1; // Pattern failed
1213 }
1214
1215 // Pattern works - now check if it matches
1216 int result;
1217 if (m->match(mh, InlineMatcher::force_inline)) {
1218 result = 2; // Force inline match
1219 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1220 result = 1; // Dont inline match
1221 } else {
1222 result = 0; // No match
1223 }
1224 delete m;
1225 return result;
1226 WB_END
1227
1228 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1229 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1230 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1231
1232 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1233
1234 ResourceMark rm;
1235 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1236
1237 const char* error_msg = nullptr;
1238
1239 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1240 if (m == nullptr) {
1241 assert(error_msg != nullptr, "Must have error_msg");
1242 tty->print_cr("Got error: %s", error_msg);
1243 return -1;
1244 }
1245
1246 // Pattern works - now check if it matches
1247 int result = m->matches(mh);
1248 delete m;
1249 assert(result == 0 || result == 1, "Result out of range");
1250 return result;
1251 WB_END
1252
1253 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1254 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1255 CHECK_JNI_EXCEPTION(env);
1256 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1257
1258 MethodData* mdo = mh->method_data();
1259 if (mdo == nullptr) {
1260 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1261 mdo = mh->method_data();
1262 }
1263 mdo->init();
1264 InvocationCounter* icnt = mdo->invocation_counter();
1265 InvocationCounter* bcnt = mdo->backedge_counter();
1266 // set i-counter according to CompilationPolicy::is_method_profiled
1267 icnt->set(Tier4MinInvocationThreshold);
1268 bcnt->set(Tier4CompileThreshold);
1269 WB_END
1270
1271 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1272 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1273 CHECK_JNI_EXCEPTION(env);
1274 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1275 MutexLocker mu(THREAD, Compile_lock);
1276 MethodData* mdo = mh->method_data();
1277 MethodCounters* mcs = mh->method_counters();
1278
1279 if (mdo != nullptr) {
1280 mdo->init();
1281 ResourceMark rm(THREAD);
1282 int arg_count = mdo->method()->size_of_parameters();
1283 for (int i = 0; i < arg_count; i++) {
1284 mdo->set_arg_modified(i, 0);
1285 }
1286 mdo->clean_method_data(/*always_clean*/true);
1287 }
1288
1289 mh->clear_is_not_c1_compilable();
1290 mh->clear_is_not_c2_compilable();
1291 mh->clear_is_not_c2_osr_compilable();
1292 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1293 if (mcs != nullptr) {
1294 mcs->clear_counters();
1295 }
1296 WB_END
1297
1298 template <typename T, int type_enum>
1299 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1300 if (name == nullptr) {
1301 return false;
1302 }
1303 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1304 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1305 CHECK_JNI_EXCEPTION_(env, false);
1306 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1307 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1308 env->ReleaseStringUTFChars(name, flag_name);
1309 return (result == JVMFlag::SUCCESS);
1310 }
1311
1312 template <typename T, int type_enum>
1313 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1314 if (name == nullptr) {
1315 return false;
1316 }
1317 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1318 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1319 CHECK_JNI_EXCEPTION_(env, false);
1320 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1321 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1322 env->ReleaseStringUTFChars(name, flag_name);
1323 return (result == JVMFlag::SUCCESS);
1324 }
1325
1326 template <typename T>
1327 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1328 ResourceMark rm(thread);
1329 jclass clazz = env->FindClass(name->as_C_string());
1330 CHECK_JNI_EXCEPTION_(env, nullptr);
1331 jmethodID methodID = env->GetStaticMethodID(clazz,
1332 vmSymbols::valueOf_name()->as_C_string(),
1333 sig->as_C_string());
1334 CHECK_JNI_EXCEPTION_(env, nullptr);
1335 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1336 CHECK_JNI_EXCEPTION_(env, nullptr);
1337 return result;
1338 }
1339
1340 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1341 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1342 }
1343 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1344 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1345 }
1346 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1347 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1348 }
1349 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1350 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1351 }*/
1352 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1353 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1354 }
1355
1356 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1357 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1358 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1359 CHECK_JNI_EXCEPTION_(env, nullptr);
1360 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1361 env->ReleaseStringUTFChars(name, flag_name);
1362 return result;
1363 }
1364
1365 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1366 const JVMFlag* flag = getVMFlag(thread, env, name);
1367 return (flag != nullptr) && flag->is_constant_in_binary();
1368 WB_END
1369
1370 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1371 const JVMFlag* flag = getVMFlag(thread, env, name);
1372 return (flag != nullptr) && flag->is_default();
1373 WB_END
1374
1375 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1376 const JVMFlag* flag = getVMFlag(thread, env, name);
1377 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1378 WB_END
1379
1380 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1381 bool result;
1382 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1383 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1384 return booleanBox(thread, env, result);
1385 }
1386 return nullptr;
1387 WB_END
1388
1389 template <typename T, int type_enum>
1390 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1391 T result;
1392 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1393 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1394 return longBox(thread, env, result);
1395 }
1396 return nullptr;
1397 }
1398
1399 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1400 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1401 WB_END
1402
1403 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1404 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1405 WB_END
1406
1407 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1408 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1409 WB_END
1410
1411 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1412 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1413 WB_END
1414
1415 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1416 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1417 WB_END
1418
1419 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1420 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1421 WB_END
1422
1423 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1424 double result;
1425 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1426 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1427 return doubleBox(thread, env, result);
1428 }
1429 return nullptr;
1430 WB_END
1431
1432 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1433 ccstr ccstrResult;
1434 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1435 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1436 jstring result = env->NewStringUTF(ccstrResult);
1437 CHECK_JNI_EXCEPTION_(env, nullptr);
1438 return result;
1439 }
1440 return nullptr;
1441 WB_END
1442
1443 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1444 bool result = value == JNI_TRUE ? true : false;
1445 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1446 WB_END
1447
1448 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1449 int result = checked_cast<int>(value);
1450 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1451 WB_END
1452
1453 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1454 uint result = checked_cast<uint>(value);
1455 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1456 WB_END
1457
1458 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1459 intx result = value;
1460 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1461 WB_END
1462
1463 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1464 uintx result = value;
1465 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1466 WB_END
1467
1468 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1469 uint64_t result = value;
1470 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1471 WB_END
1472
1473 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1474 size_t result = value;
1475 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1476 WB_END
1477
1478 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1479 double result = value;
1480 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1481 WB_END
1482
1483 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1484 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1485 const char* ccstrValue;
1486 if (value == nullptr) {
1487 ccstrValue = nullptr;
1488 }
1489 else {
1490 ccstrValue = env->GetStringUTFChars(value, nullptr);
1491 CHECK_JNI_EXCEPTION(env);
1492 }
1493 {
1494 ccstr param = ccstrValue;
1495 ThreadInVMfromNative ttvfn(thread); // back to VM
1496 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1497 assert(param == nullptr, "old value is freed automatically and not returned");
1498 }
1499 }
1500 if (value != nullptr) {
1501 env->ReleaseStringUTFChars(value, ccstrValue);
1502 }
1503 WB_END
1504
1505 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1506 WhiteBox::compilation_locked = true;
1507 WB_END
1508
1509 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1510 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1511 WhiteBox::compilation_locked = false;
1512 mo.notify_all();
1513 WB_END
1514
1515 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1516 ResourceMark rm(THREAD);
1517 int len;
1518 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1519 return (StringTable::lookup(name, len) != nullptr);
1520 WB_END
1521
1522 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1523 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1524 Universe::heap()->collect(GCCause::_wb_full_gc);
1525 #if INCLUDE_G1GC || INCLUDE_SERIALGC
1526 if (UseG1GC || UseSerialGC) {
1527 // Needs to be cleared explicitly for G1 and Serial GC.
1528 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1529 }
1530 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC
1531 WB_END
1532
1533 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1534 Universe::heap()->collect(GCCause::_wb_young_gc);
1535 WB_END
1536
1537 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1538 // static+volatile in order to force the read to happen
1539 // (not be eliminated by the compiler)
1540 static char c;
1541 static volatile char* p;
1542
1543 p = os::reserve_memory(os::vm_allocation_granularity(), mtTest);
1544 if (p == nullptr) {
1545 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1546 }
1547
1548 c = *p;
1549 WB_END
1550
1551 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1552 const char* features = VM_Version::cpu_info_string();
1553 ThreadToNativeFromVM ttn(thread);
1554 jstring features_string = env->NewStringUTF(features);
1555
1556 CHECK_JNI_EXCEPTION_(env, nullptr);
1557
1558 return features_string;
1559 WB_END
1560
1561 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1562 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1563 return CodeCache::get_code_heap(code)->code_blob_type();
1564 }
1565
1566 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1567 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1568 return CodeCache::get_code_heap(blob_type);
1569 }
1570
1571 struct CodeBlobStub {
1572 CodeBlobStub(const CodeBlob* blob) :
1573 name(os::strdup(blob->name())),
1574 size(blob->size()),
1575 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1576 address((jlong) blob) { }
1577 ~CodeBlobStub() { os::free((void*) name); }
1578 const char* const name;
1579 const jint size;
1580 const jint blob_type;
1581 const jlong address;
1582 };
1583
1584 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1585 ResourceMark rm;
1586 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1587 CHECK_JNI_EXCEPTION_(env, nullptr);
1588 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1589
1590 jstring name = env->NewStringUTF(cb->name);
1591 CHECK_JNI_EXCEPTION_(env, nullptr);
1592 env->SetObjectArrayElement(result, 0, name);
1593
1594 jobject obj = integerBox(thread, env, cb->size);
1595 CHECK_JNI_EXCEPTION_(env, nullptr);
1596 env->SetObjectArrayElement(result, 1, obj);
1597
1598 obj = integerBox(thread, env, cb->blob_type);
1599 CHECK_JNI_EXCEPTION_(env, nullptr);
1600 env->SetObjectArrayElement(result, 2, obj);
1601
1602 obj = longBox(thread, env, cb->address);
1603 CHECK_JNI_EXCEPTION_(env, nullptr);
1604 env->SetObjectArrayElement(result, 3, obj);
1605
1606 return result;
1607 }
1608
1609 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1610 ResourceMark rm(THREAD);
1611 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1612 CHECK_JNI_EXCEPTION_(env, nullptr);
1613 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1614 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1615 jobjectArray result = nullptr;
1616 if (code == nullptr) {
1617 return result;
1618 }
1619 int comp_level = code->comp_level();
1620 int insts_size = code->insts_size();
1621
1622 ThreadToNativeFromVM ttn(thread);
1623 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1624 CHECK_JNI_EXCEPTION_(env, nullptr);
1625 result = env->NewObjectArray(5, clazz, nullptr);
1626 if (result == nullptr) {
1627 return result;
1628 }
1629
1630 CodeBlobStub stub(code);
1631 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1632 CHECK_JNI_EXCEPTION_(env, nullptr);
1633 env->SetObjectArrayElement(result, 0, codeBlob);
1634
1635 jobject level = integerBox(thread, env, comp_level);
1636 CHECK_JNI_EXCEPTION_(env, nullptr);
1637 env->SetObjectArrayElement(result, 1, level);
1638
1639 jbyteArray insts = env->NewByteArray(insts_size);
1640 CHECK_JNI_EXCEPTION_(env, nullptr);
1641 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1642 env->SetObjectArrayElement(result, 2, insts);
1643
1644 jobject id = integerBox(thread, env, code->compile_id());
1645 CHECK_JNI_EXCEPTION_(env, nullptr);
1646 env->SetObjectArrayElement(result, 3, id);
1647
1648 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1649 CHECK_JNI_EXCEPTION_(env, nullptr);
1650 env->SetObjectArrayElement(result, 4, entry_point);
1651
1652 return result;
1653 WB_END
1654
1655 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1656 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1657 BufferBlob* blob;
1658 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1659 if (full_size < size) {
1660 full_size += align_up(size - full_size, oopSize);
1661 }
1662 {
1663 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1664 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1665 if (blob != nullptr) {
1666 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1667 }
1668 }
1669 // Track memory usage statistic after releasing CodeCache_lock
1670 MemoryService::track_code_cache_memory_usage();
1671 return blob;
1672 }
1673
1674 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1675 if (size < 0) {
1676 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1677 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1678 }
1679 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1680 WB_END
1681
1682 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1683 if (addr == 0) {
1684 return;
1685 }
1686 BufferBlob::free((BufferBlob*) addr);
1687 WB_END
1688
1689 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1690 ResourceMark rm;
1691 GrowableArray<CodeBlobStub*> blobs;
1692 {
1693 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1694 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1695 if (heap == nullptr) {
1696 return nullptr;
1697 }
1698 for (CodeBlob* cb = (CodeBlob*) heap->first();
1699 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1700 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1701 new (stub) CodeBlobStub(cb);
1702 blobs.append(stub);
1703 }
1704 }
1705 ThreadToNativeFromVM ttn(thread);
1706 jobjectArray result = nullptr;
1707 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1708 CHECK_JNI_EXCEPTION_(env, nullptr);
1709 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1710 CHECK_JNI_EXCEPTION_(env, nullptr);
1711 if (result == nullptr) {
1712 return result;
1713 }
1714 int i = 0;
1715 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1716 it != blobs.end(); ++it) {
1717 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1718 CHECK_JNI_EXCEPTION_(env, nullptr);
1719 env->SetObjectArrayElement(result, i, obj);
1720 CHECK_JNI_EXCEPTION_(env, nullptr);
1721 ++i;
1722 }
1723 return result;
1724 WB_END
1725
1726 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1727 return CompileBroker::get_compilation_activity_mode();
1728 WB_END
1729
1730 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1731 if (addr == 0) {
1732 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1733 "WB_GetCodeBlob: addr is null");
1734 }
1735 ThreadToNativeFromVM ttn(thread);
1736 CodeBlobStub stub((CodeBlob*) addr);
1737 return codeBlob2objectArray(thread, env, &stub);
1738 WB_END
1739
1740 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1741 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1742 CHECK_JNI_EXCEPTION_(env, 0);
1743 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1744 return (jlong) mh->method_data();
1745 WB_END
1746
1747 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1748 return (jlong) thread->stack_size();
1749 WB_END
1750
1751 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1752 return (jlong) thread->stack_overflow_state()->stack_available(
1753 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1754 WB_END
1755
1756
1757 int WhiteBox::array_bytes_to_length(size_t bytes) {
1758 return Array<u1>::bytes_to_length(bytes);
1759 }
1760
1761 ///////////////
1762 // MetaspaceTestContext and MetaspaceTestArena
1763 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1764 assert(is_aligned(commit_limit, BytesPerWord),
1765 "WB_CreateMetaspaceTestContext: commit_limit is not a multiple of the system word byte size");
1766 assert(is_aligned(reserve_limit, BytesPerWord),
1767 "WB_CreateMetaspaceTestContext: reserve_limit is not a multiple of the system word byte size");
1768 metaspace::MetaspaceTestContext* context =
1769 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit / BytesPerWord,
1770 (size_t) reserve_limit / BytesPerWord);
1771 return (jlong)p2i(context);
1772 WB_END
1773
1774 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1775 delete (metaspace::MetaspaceTestContext*) context;
1776 WB_END
1777
1778 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1779 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1780 context0->purge_area();
1781 WB_END
1782
1783 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1784 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1785 context0->print_on(tty);
1786 WB_END
1787
1788 WB_ENTRY(jlong, WB_GetTotalCommittedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1789 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1790 return (jlong)context0->committed_words() * BytesPerWord;
1791 WB_END
1792
1793 WB_ENTRY(jlong, WB_GetTotalUsedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1794 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1795 return (jlong)context0->used_words() * BytesPerWord;
1796 WB_END
1797
1798 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1799 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ClassMirrorHolderMetaspaceType : Metaspace::StandardMetaspaceType;
1800 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1801 return (jlong)p2i(context0->create_arena(type));
1802 WB_END
1803
1804 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1805 delete (metaspace::MetaspaceTestArena*) arena;
1806 WB_END
1807
1808 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong size))
1809 assert(is_aligned(size, BytesPerWord),
1810 "WB_AllocateFromMetaspaceTestArena: size is not a multiple of the system word byte size");
1811 metaspace::MetaspaceTestArena *arena0 = (metaspace::MetaspaceTestArena *)arena;
1812 MetaWord *p = arena0->allocate((size_t) size / BytesPerWord);
1813 return (jlong)p2i(p);
1814 WB_END
1815
1816 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong size))
1817 assert(is_aligned(size, BytesPerWord),
1818 "WB_DeallocateToMetaspaceTestArena: size is not a multiple of the system word byte size");
1819 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1820 arena0->deallocate((MetaWord*)p, (size_t) size / BytesPerWord);
1821 WB_END
1822
1823 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1824 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1825 WB_END
1826
1827 WB_ENTRY(jlong, WB_WordSize(JNIEnv* env))
1828 return (jlong)BytesPerWord;
1829 WB_END
1830
1831 WB_ENTRY(jlong, WB_RootChunkWordSize(JNIEnv* env))
1832 return (jlong)Metaspace::reserve_alignment_words();
1833 WB_END
1834
1835 WB_ENTRY(jboolean, WB_IsStaticallyLinked(JNIEnv* env, jobject wb))
1836 return JVM_IsStaticallyLinked();
1837 WB_END
1838
1839 //////////////
1840
1841 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1842 if (size < 0) {
1843 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1844 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1845 }
1846
1847 oop class_loader_oop = JNIHandles::resolve(class_loader);
1848 ClassLoaderData* cld = class_loader_oop != nullptr
1849 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1850 : ClassLoaderData::the_null_class_loader_data();
1851
1852 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1853
1854 return (jlong)(uintptr_t)metadata;
1855 WB_END
1856
1857 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1858 jstring version, jstring location, jobjectArray packages))
1859 Handle h_module (THREAD, JNIHandles::resolve(module));
1860 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1861 WB_END
1862
1863 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1864 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1865 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1866 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1867 WB_END
1868
1869 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1870 Handle h_module (THREAD, JNIHandles::resolve(module));
1871 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1872 WB_END
1873
1874 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1875 Handle h_module (THREAD, JNIHandles::resolve(module));
1876 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1877 WB_END
1878
1879 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1880 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1881 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1882 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1883 WB_END
1884
1885 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1886 if (inc < 0) {
1887 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1888 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1889 }
1890
1891 jlong max_size_t = (jlong) ((size_t) -1);
1892 if (inc > max_size_t) {
1893 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1894 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1895 }
1896
1897 size_t new_cap_until_GC = 0;
1898 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1899 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1900 if (!success) {
1901 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1902 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1903 "due to contention with another thread");
1904 }
1905 return (jlong) new_cap_until_GC;
1906 WB_END
1907
1908 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1909 return (jlong) MetaspaceGC::capacity_until_GC();
1910 WB_END
1911
1912 // The function is only valid when CDS is available.
1913 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1914 #if INCLUDE_CDS
1915 return (jlong)MetaspaceShared::core_region_alignment();
1916 #else
1917 ShouldNotReachHere();
1918 return 0L;
1919 #endif
1920 WB_END
1921
1922 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1923 oop obj_oop = JNIHandles::resolve(obj);
1924 return (jboolean) obj_oop->mark().has_monitor();
1925 WB_END
1926
1927 WB_ENTRY(jboolean, WB_IsAsanEnabled(JNIEnv* env))
1928 return (jboolean) WhiteBox::is_asan_enabled();
1929 WB_END
1930
1931 WB_ENTRY(jboolean, WB_IsUbsanEnabled(JNIEnv* env))
1932 return (jboolean) WhiteBox::is_ubsan_enabled();
1933 WB_END
1934
1935 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1936 return (jlong) WhiteBox::get_in_use_monitor_count();
1937 WB_END
1938
1939 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1940 return (jint) LockStack::CAPACITY;
1941 WB_END
1942
1943 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1944 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1945 WB_END
1946
1947 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1948 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1949 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1950 WB_END
1951
1952 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1953 VM_ForceSafepoint force_safepoint_op;
1954 VMThread::execute(&force_safepoint_op);
1955 WB_END
1956
1957 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1958 nullStream dev_null;
1959 ClassLoaderStatsVMOperation force_op(&dev_null);
1960 VMThread::execute(&force_op);
1961 WB_END
1962
1963 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1964 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1965 return (jlong) ik->constants();
1966 WB_END
1967
1968 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1969 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1970 objArrayOop resolved_refs= ik->constants()->resolved_references();
1971 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1972 WB_END
1973
1974 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1975 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1976 ConstantPool* cp = ik->constants();
1977 if (cp->cache() == nullptr) {
1978 return -1;
1979 }
1980 return cp->resolved_field_entries_length();
1981 WB_END
1982
1983 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1984 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1985 ConstantPool* cp = ik->constants();
1986 if (cp->cache() == nullptr) {
1987 return -1;
1988 }
1989 return cp->resolved_field_entry_at(index)->constant_pool_index();
1990 WB_END
1991
1992 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1993 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1994 ConstantPool* cp = ik->constants();
1995 if (cp->cache() == nullptr) {
1996 return -1;
1997 }
1998 return cp->resolved_method_entries_length();
1999 WB_END
2000
2001 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2002 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
2003 ConstantPool* cp = ik->constants();
2004 if (cp->cache() == nullptr) {
2005 return -1;
2006 }
2007 return cp->resolved_method_entry_at(index)->constant_pool_index();
2008 WB_END
2009
2010 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
2011 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
2012 ConstantPool* cp = ik->constants();
2013 if (cp->cache() == nullptr) {
2014 return -1;
2015 }
2016 return cp->resolved_indy_entries_length();
2017 WB_END
2018
2019 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
2020 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
2021 ConstantPool* cp = ik->constants();
2022 if (cp->cache() == nullptr) {
2023 return -1;
2024 }
2025 return cp->resolved_indy_entry_at(index)->constant_pool_index();
2026 WB_END
2027
2028 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
2029 ThreadToNativeFromVM ttnfv(thread);
2030 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2031 ResourceMark rm;
2032 stringStream st;
2033 {
2034 ThreadInVMfromNative ttvfn(thread); // back to VM
2035 ClassPrinter::print_classes(c, flags, &st);
2036 }
2037 jstring result = env->NewStringUTF(st.freeze());
2038 CHECK_JNI_EXCEPTION_(env, nullptr);
2039 return result;
2040 WB_END
2041
2042 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
2043 ThreadToNativeFromVM ttnfv(thread);
2044 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
2045 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
2046 ResourceMark rm;
2047 stringStream st;
2048 {
2049 ThreadInVMfromNative ttvfn(thread); // back to VM
2050 ClassPrinter::print_methods(c, m, flags, &st);
2051 }
2052 jstring result = env->NewStringUTF(st.freeze());
2053 CHECK_JNI_EXCEPTION_(env, nullptr);
2054 return result;
2055 WB_END
2056
2057 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
2058 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
2059 VMThread::execute(&clear_ics);
2060 WB_END
2061
2062 template <typename T>
2063 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
2064 assert(value != nullptr, "sanity");
2065 if (method == nullptr || name == nullptr) {
2066 return false;
2067 }
2068 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2069 CHECK_JNI_EXCEPTION_(env, false);
2070 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2071 // can't be in VM when we call JNI
2072 ThreadToNativeFromVM ttnfv(thread);
2073 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2074 CHECK_JNI_EXCEPTION_(env, false);
2075 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
2076 env->ReleaseStringUTFChars(name, flag_name);
2077 if (option == CompileCommandEnum::Unknown) {
2078 return false;
2079 }
2080 if (!CompilerOracle::option_matches_type(option, *value)) {
2081 return false;
2082 }
2083 return CompilerOracle::has_option_value(mh, option, *value);
2084 }
2085
2086 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2087 bool result;
2088 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2089 // can't be in VM when we call JNI
2090 ThreadToNativeFromVM ttnfv(thread);
2091 return booleanBox(thread, env, result);
2092 }
2093 return nullptr;
2094 WB_END
2095
2096 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2097 intx result;
2098 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2099 // can't be in VM when we call JNI
2100 ThreadToNativeFromVM ttnfv(thread);
2101 return longBox(thread, env, result);
2102 }
2103 return nullptr;
2104 WB_END
2105
2106 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2107 uintx result;
2108 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2109 // can't be in VM when we call JNI
2110 ThreadToNativeFromVM ttnfv(thread);
2111 return longBox(thread, env, result);
2112 }
2113 return nullptr;
2114 WB_END
2115
2116 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2117 double result;
2118 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2119 // can't be in VM when we call JNI
2120 ThreadToNativeFromVM ttnfv(thread);
2121 return doubleBox(thread, env, result);
2122 }
2123 return nullptr;
2124 WB_END
2125
2126 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2127 ccstr ccstrResult;
2128 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2129 // can't be in VM when we call JNI
2130 ThreadToNativeFromVM ttnfv(thread);
2131 jstring result = env->NewStringUTF(ccstrResult);
2132 CHECK_JNI_EXCEPTION_(env, nullptr);
2133 return result;
2134 }
2135 return nullptr;
2136 WB_END
2137
2138 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2139 const char* p = CDSConfig::default_archive_path();
2140 ThreadToNativeFromVM ttn(thread);
2141 jstring path_string = env->NewStringUTF(p);
2142
2143 CHECK_JNI_EXCEPTION_(env, nullptr);
2144
2145 return path_string;
2146 WB_END
2147
2148 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2149 return CDSConfig::is_using_archive();
2150 WB_END
2151
2152 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2153 #if INCLUDE_CDS
2154 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2155 #else
2156 ShouldNotReachHere();
2157 return (jint)-1;
2158 #endif
2159 WB_END
2160
2161 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2162 #if INCLUDE_CDS
2163 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2164 #else
2165 ShouldNotReachHere();
2166 return (jint)-1;
2167 #endif
2168 WB_END
2169
2170 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2171 return FileMapInfo::memory_mapping_failed();
2172 WB_END
2173
2174 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2175 ResourceMark rm(THREAD);
2176 oop str_oop = JNIHandles::resolve(str);
2177 int length;
2178 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2179 return StringTable::lookup_shared(chars, length) == str_oop;
2180 WB_END
2181
2182 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2183 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2184 WB_END
2185
2186 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2187 return ArchiveHeapLoader::is_mapped();
2188 WB_END
2189
2190 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2191 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2192 if (!k->is_instance_klass()) {
2193 return;
2194 }
2195 InstanceKlass *ik = InstanceKlass::cast(k);
2196 ik->link_class(THREAD); // may throw verification error
2197 WB_END
2198
2199 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2200 return ArchiveHeapLoader::is_mapped();
2201 WB_END
2202
2203 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2204 #if INCLUDE_CDS
2205 // An exploded build inhibits use of CDS. Therefore, for the
2206 // purpose of testing, the JVM can be treated as not having CDS
2207 // built in at all.
2208 return ClassLoader::has_jrt_entry();
2209 #else
2210 return false;
2211 #endif // INCLUDE_CDS
2212 WB_END
2213
2214 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2215 #if COMPILER2_OR_JVMCI
2216 return true;
2217 #else
2218 return false;
2219 #endif
2220 WB_END
2221
2222 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2223 #if INCLUDE_JVMCI
2224 return JVMCIGlobals::gc_supports_jvmci();
2225 #else
2226 return false;
2227 #endif
2228 WB_END
2229
2230 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2231 return !CDSConfig::are_vm_options_incompatible_with_dumping_heap();
2232 WB_END
2233
2234
2235 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2236 #if INCLUDE_JFR
2237 return true;
2238 #else
2239 return false;
2240 #endif // INCLUDE_JFR
2241 WB_END
2242
2243 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2244 #if defined(DTRACE_ENABLED)
2245 return true;
2246 #else
2247 return false;
2248 #endif // DTRACE_ENABLED
2249 WB_END
2250
2251 #if INCLUDE_CDS
2252
2253 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2254 ResourceMark rm;
2255 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2256 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2257 return result;
2258 WB_END
2259
2260 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2261 ResourceMark rm;
2262 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2263 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2264 return result;
2265 WB_END
2266
2267 #endif // INCLUDE_CDS
2268
2269 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2270 class ReadMonitorsClosure : public HandshakeClosure {
2271 jboolean _executed;
2272
2273 void do_thread(Thread* th) {
2274 JavaThread* jt = JavaThread::cast(th);
2275 ResourceMark rm;
2276
2277 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2278
2279 if (!jt->has_last_Java_frame()) {
2280 return;
2281 }
2282 RegisterMap rmap(jt,
2283 RegisterMap::UpdateMap::include,
2284 RegisterMap::ProcessFrames::include,
2285 RegisterMap::WalkContinuation::skip);
2286 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2287 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2288 if (monitors != nullptr) {
2289 int len = monitors->length();
2290 // Walk monitors youngest to oldest
2291 for (int i = len - 1; i >= 0; i--) {
2292 MonitorInfo* mon_info = monitors->at(i);
2293 if (mon_info->eliminated()) continue;
2294 oop owner = mon_info->owner();
2295 if (owner != nullptr) {
2296 info->append(mon_info);
2297 }
2298 }
2299 }
2300 }
2301 _executed = true;
2302 }
2303
2304 public:
2305 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2306 jboolean executed() const { return _executed; }
2307 };
2308
2309 ReadMonitorsClosure rmc;
2310 if (thread_handle != nullptr) {
2311 ThreadsListHandle tlh;
2312 JavaThread* target = nullptr;
2313 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2314 if (is_alive) {
2315 Handshake::execute(&rmc, &tlh, target);
2316 }
2317 }
2318 return rmc.executed();
2319 WB_END
2320
2321 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2322 class TraceSelfClosure : public HandshakeClosure {
2323 jint _num_threads_completed;
2324
2325 void do_thread(Thread* th) {
2326 JavaThread* jt = JavaThread::cast(th);
2327 ResourceMark rm;
2328
2329 jt->print_on(tty);
2330 jt->print_stack_on(tty);
2331 tty->cr();
2332 Atomic::inc(&_num_threads_completed);
2333 }
2334
2335 public:
2336 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2337
2338 jint num_threads_completed() const { return _num_threads_completed; }
2339 };
2340 TraceSelfClosure tsc(Thread::current());
2341
2342 if (all_threads) {
2343 Handshake::execute(&tsc);
2344 } else if (thread_handle != nullptr) {
2345 ThreadsListHandle tlh;
2346 JavaThread* target = nullptr;
2347 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2348 if (is_alive) {
2349 Handshake::execute(&tsc, &tlh, target);
2350 }
2351 }
2352 return tsc.num_threads_completed();
2353 WB_END
2354
2355 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2356 class TraceSelfClosure : public AsyncHandshakeClosure {
2357 JavaThread* _self;
2358 void do_thread(Thread* th) {
2359 assert(th->is_Java_thread(), "sanity");
2360 // AsynchHandshake handshakes are only executed by target.
2361 assert(_self == th, "Must be");
2362 assert(Thread::current() == th, "Must be");
2363 JavaThread* jt = JavaThread::cast(th);
2364 ResourceMark rm;
2365 jt->print_on(tty);
2366 jt->print_stack_on(tty);
2367 tty->cr();
2368 }
2369
2370 public:
2371 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2372 };
2373 if (thread_handle != nullptr) {
2374 ThreadsListHandle tlh;
2375 JavaThread* target = nullptr;
2376 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2377 if (is_alive) {
2378 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2379 Handshake::execute(tsc, target);
2380 }
2381 }
2382 WB_END
2383
2384 static volatile int _emulated_lock = 0;
2385
2386 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2387 JavaThread* self = JavaThread::current();
2388
2389 {
2390 // Before trying to acquire the lock transition into a safepoint safe state.
2391 // Otherwise if either suspender or suspendee blocks for a safepoint
2392 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2393 // the lock without allowing the safepoint to progress.
2394 ThreadBlockInVM tbivm(self);
2395
2396 // We will deadlock here if we are 'suspender' and 'suspendee'
2397 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2398 // at the right place.
2399 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2400 assert(_emulated_lock == 1, "Must be locked");
2401
2402 // Sleep much longer in suspendee to force situation where
2403 // 'suspender' is waiting above to acquire lock.
2404 os::naked_short_sleep(suspender ? 1 : 10);
2405 }
2406 Atomic::store(&_emulated_lock, 0);
2407 WB_END
2408
2409 // Some convenience methods to deal with objects from java
2410 int WhiteBox::offset_for_field(const char* field_name, oop object,
2411 Symbol* signature_symbol) {
2412 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2413
2414 //Get the class of our object
2415 Klass* arg_klass = object->klass();
2416 //Turn it into an instance-klass
2417 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2418
2419 //Create symbols to look for in the class
2420 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2421
2422 //To be filled in with an offset of the field we're looking for
2423 fieldDescriptor fd;
2424
2425 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2426 if (res == nullptr) {
2427 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2428 name_symbol->as_C_string());
2429 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2430 }
2431
2432 //fetch the field at the offset we've found
2433 int dest_offset = fd.offset();
2434
2435 return dest_offset;
2436 }
2437
2438
2439 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2440 int offset = offset_for_field(field_name, object,
2441 vmSymbols::string_signature());
2442 oop string = object->obj_field(offset);
2443 if (string == nullptr) {
2444 return nullptr;
2445 }
2446 const char* ret = java_lang_String::as_utf8_string(string);
2447 return ret;
2448 }
2449
2450 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2451 int offset =
2452 offset_for_field(field_name, object, vmSymbols::bool_signature());
2453 bool ret = (object->bool_field(offset) == JNI_TRUE);
2454 return ret;
2455 }
2456
2457 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2458 ResourceMark rm;
2459 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2460 const char* klass_name = klass->external_name();
2461
2462 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2463
2464 // one by one registration natives for exception catching
2465 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2466 CHECK_JNI_EXCEPTION(env);
2467 for (int i = 0, n = method_count; i < n; ++i) {
2468 // Skip dummy entries
2469 if (method_array[i].fnPtr == nullptr) continue;
2470 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2471 jthrowable throwable_obj = env->ExceptionOccurred();
2472 if (throwable_obj != nullptr) {
2473 env->ExceptionClear();
2474 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2475 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2476 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2477 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2478 klass_name, method_array[i].name, method_array[i].signature);
2479 }
2480 } else {
2481 // Registration failed unexpectedly.
2482 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2483 klass_name, method_array[i].name, method_array[i].signature);
2484 env->UnregisterNatives(wbclass);
2485 break;
2486 }
2487 }
2488 }
2489 }
2490
2491 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2492 // can't be in VM when we call JNI
2493 ThreadToNativeFromVM ttnfv(thread);
2494 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2495 CHECK_JNI_EXCEPTION_(env, 0);
2496 int ret;
2497 {
2498 ThreadInVMfromNative ttvfn(thread); // back to VM
2499 ret = DirectivesParser::parse_string(dir, tty);
2500 }
2501 env->ReleaseStringUTFChars(compDirect, dir);
2502 // -1 for error parsing directive. Return 0 as number of directives added.
2503 if (ret == -1) {
2504 ret = 0;
2505 }
2506 return (jint) ret;
2507 WB_END
2508
2509 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2510 DirectivesStack::pop(count);
2511 WB_END
2512
2513 // Checks that the library libfile has the noexecstack bit set.
2514 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2515 jboolean ret = false;
2516 #ifdef LINUX
2517 // Can't be in VM when we call JNI.
2518 ThreadToNativeFromVM ttnfv(thread);
2519 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2520 CHECK_JNI_EXCEPTION_(env, 0);
2521 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2522 env->ReleaseStringUTFChars(libfile, lf);
2523 #endif
2524 return ret;
2525 WB_END
2526
2527 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2528 LINUX_ONLY(return OSContainer::is_containerized();)
2529 return false;
2530 WB_END
2531
2532 // Physical memory of the host machine (including containers)
2533 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2534 LINUX_ONLY(return os::Linux::physical_memory();)
2535 return os::physical_memory();
2536 WB_END
2537
2538 // Available memory of the host machine (container-aware)
2539 WB_ENTRY(jlong, WB_HostAvailableMemory(JNIEnv* env, jobject o))
2540 return os::available_memory();
2541 WB_END
2542
2543 // Physical swap of the host machine (including containers), Linux only.
2544 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2545 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2546 return -1; // Not used/implemented on other platforms
2547 WB_END
2548
2549 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2550 jobject o,
2551 jboolean cgroups_v2_enabled,
2552 jstring controllers_file,
2553 jstring proc_self_cgroup,
2554 jstring proc_self_mountinfo))
2555 jint ret = 0;
2556 #ifdef LINUX
2557 ThreadToNativeFromVM ttnfv(thread);
2558 const char* c_file = env->GetStringUTFChars(controllers_file, nullptr);
2559 CHECK_JNI_EXCEPTION_(env, 0);
2560 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2561 CHECK_JNI_EXCEPTION_(env, 0);
2562 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2563 CHECK_JNI_EXCEPTION_(env, 0);
2564 u1 cg_type_flags = 0;
2565 // This sets cg_type_flags
2566 WhiteBox::validate_cgroup(cgroups_v2_enabled, c_file, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2567 ret = (jint)cg_type_flags;
2568 env->ReleaseStringUTFChars(controllers_file, c_file);
2569 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2570 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2571 #endif
2572 return ret;
2573 WB_END
2574
2575 // Available cpus of the host machine, Linux only.
2576 // Used in container testing.
2577 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2578 LINUX_ONLY(return os::Linux::active_processor_count();)
2579 return -1; // Not used/implemented on other platforms
2580 WB_END
2581
2582 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2583 os::print_os_info(tty);
2584 WB_END
2585
2586 // Elf decoder
2587 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2588 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2589 ElfFile::_do_not_cache_elf_section = true;
2590 #endif
2591 WB_END
2592
2593 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2594 return (jlong) ResolvedMethodTable::items_count();
2595 WB_END
2596
2597 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2598 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2599 // Return size in bytes.
2600 return k->size() * wordSize;
2601 WB_END
2602
2603 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2604 // It explains how the thread's priority field is used for test state coordination.
2605 //
2606 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2607 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2608 jlong tid = java_lang_Thread::thread_id(target_oop);
2609 JavaThread* target = java_lang_Thread::thread(target_oop);
2610
2611 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2612 ThreadsListHandle tlh;
2613
2614 // Look up the target thread by tid to ensure it is present
2615 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2616 if (t == nullptr) {
2617 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2618 }
2619
2620 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2621 // Allow target to terminate by boosting priority
2622 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2623
2624 // Now wait for the target to terminate
2625 while (!target->is_terminated()) {
2626 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2627 os::naked_short_sleep(0);
2628 }
2629
2630 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2631
2632 // Now release the GC inducing thread - we have to re-resolve the external oop that
2633 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2634 oop original = JNIHandles::resolve_non_null(target_handle);
2635 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2636
2637 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2638
2639 // The Java code should be creating garbage and triggering GC, which would potentially move
2640 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2641 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2642 // kick in.
2643 for (int i = 0; i < 5; i++) {
2644 oop original = JNIHandles::resolve_non_null(target_handle);
2645 oop current = t->threadObj();
2646 if (original != current) {
2647 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2648 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2649 } else {
2650 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2651 ThreadBlockInVM tbivm(thread);
2652 os::naked_short_sleep(50);
2653 }
2654 }
2655 WB_END
2656
2657 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2658 ResourceMark rm; // for verify
2659 stringStream st;
2660 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2661 frame* current_frame = fst.current();
2662 if (log) {
2663 current_frame->print_value_on(&st);
2664 }
2665 current_frame->verify(fst.register_map());
2666 }
2667 if (log) {
2668 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2669 tty->print_raw(st.freeze());
2670 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2671 }
2672 WB_END
2673
2674 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2675 #if INCLUDE_JVMTI
2676 return JNI_TRUE;
2677 #else
2678 return JNI_FALSE;
2679 #endif
2680 WB_END
2681
2682 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2683 os::naked_short_sleep(time);
2684 WB_END
2685
2686 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2687 ThreadToNativeFromVM ttn(thread);
2688 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2689 CHECK_JNI_EXCEPTION_(env, nullptr);
2690 return info_string;
2691 WB_END
2692
2693 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2694 #if INCLUDE_G1GC
2695 if (!UseG1GC) {
2696 ShouldNotReachHere();
2697 return;
2698 }
2699 oop obj = JNIHandles::resolve(o);
2700 G1CollectedHeap::heap()->pin_object(thread, obj);
2701 #else
2702 ShouldNotReachHere();
2703 #endif // INCLUDE_G1GC
2704 WB_END
2705
2706 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2707 #if INCLUDE_G1GC
2708 if (!UseG1GC) {
2709 ShouldNotReachHere();
2710 return;
2711 }
2712 oop obj = JNIHandles::resolve(o);
2713 G1CollectedHeap::heap()->unpin_object(thread, obj);
2714 #else
2715 ShouldNotReachHere();
2716 #endif // INCLUDE_G1GC
2717 WB_END
2718
2719 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2720 if (!Continuations::enabled()) {
2721 tty->print_cr("WB error: must be Continuations::enabled()!");
2722 return JNI_FALSE;
2723 }
2724 jboolean result = false;
2725 #if INCLUDE_JVMTI
2726 if (enable) {
2727 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2728 } else {
2729 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2730 }
2731 #endif
2732 return result;
2733 WB_END
2734
2735 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2736 void* const from = (void*)addr;
2737 void* const to = (void*)(addr + size);
2738 if (from > to) {
2739 os::pretouch_memory(from, to, os::vm_page_size());
2740 }
2741 WB_END
2742
2743 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2744 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2745 WB_END
2746
2747 // Reports resident set size (RSS) in bytes
2748 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2749 return os::rss();
2750 WB_END
2751
2752 #define CC (char*)
2753
2754 static JNINativeMethod methods[] = {
2755 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2756 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2757 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2758 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2759 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2760 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2761 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2762 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2763 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2764 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2765 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2766 {CC"parseCommandLine0",
2767 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2768 (void*) &WB_ParseCommandLine
2769 },
2770 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2771 (void*)&WB_AddToBootstrapClassLoaderSearch},
2772 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2773 (void*)&WB_AddToSystemClassLoaderSearch},
2774 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2775 (void*)&WB_GetCompressedOopsMaxHeapSize},
2776 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2777 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2778 {CC"decodeNKlassAndAccessKlass",CC"(I)V", (void*)&WB_DecodeNKlassAndAccessKlass},
2779 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2780 #if INCLUDE_CDS
2781 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2782 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2783 #endif
2784 #if INCLUDE_G1GC
2785 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2786 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2787 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2788 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2789 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2790 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2791 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2792 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2793 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2794 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2795 (void*)&WB_G1AuxiliaryMemoryUsage },
2796 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2797 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2798 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2799 #endif // INCLUDE_G1GC
2800 #if INCLUDE_PARALLELGC
2801 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2802 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2803 #endif
2804 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2805 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2806 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2807 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2808 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2809 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2810 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2811 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2812 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2813 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2814 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2815 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2816 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2817 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2818 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2819 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2820 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2821 (void*)&WB_DeoptimizeMethod },
2822 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2823 (void*)&WB_IsMethodCompiled },
2824 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2825 (void*)&WB_IsMethodCompilable},
2826 {CC"isMethodQueuedForCompilation0",
2827 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2828 {CC"isIntrinsicAvailable0",
2829 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2830 (void*)&WB_IsIntrinsicAvailable},
2831 {CC"makeMethodNotCompilable0",
2832 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2833 {CC"testSetDontInlineMethod0",
2834 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2835 {CC"getMethodCompilationLevel0",
2836 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2837 {CC"getMethodDecompileCount0",
2838 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2839 {CC"getMethodTrapCount0",
2840 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2841 (void*)&WB_GetMethodTrapCount},
2842 {CC"getDeoptCount0",
2843 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2844 {CC"getMethodEntryBci0",
2845 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2846 {CC"getCompileQueueSize",
2847 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2848 {CC"testSetForceInlineMethod0",
2849 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2850 {CC"enqueueMethodForCompilation0",
2851 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2852 {CC"enqueueInitializerForCompilation0",
2853 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2854 {CC"markMethodProfiled",
2855 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2856 {CC"clearMethodState0",
2857 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2858 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2859 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2860 {CC"matchesMethod",
2861 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2862 (void*)&WB_MatchesMethod},
2863 {CC"matchesInline",
2864 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2865 (void*)&WB_MatchesInline},
2866 {CC"shouldPrintAssembly",
2867 CC"(Ljava/lang/reflect/Executable;I)Z",
2868 (void*)&WB_ShouldPrintAssembly},
2869
2870 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2871 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2872 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2873 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2874 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2875 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2876 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2877 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2878 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2879 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2880 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2881 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2882 (void*)&WB_SetStringVMFlag},
2883 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2884 (void*)&WB_GetBooleanVMFlag},
2885 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2886 (void*)&WB_GetIntVMFlag},
2887 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2888 (void*)&WB_GetUintVMFlag},
2889 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2890 (void*)&WB_GetIntxVMFlag},
2891 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2892 (void*)&WB_GetUintxVMFlag},
2893 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2894 (void*)&WB_GetUint64VMFlag},
2895 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2896 (void*)&WB_GetSizeTVMFlag},
2897 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2898 (void*)&WB_GetDoubleVMFlag},
2899 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2900 (void*)&WB_GetStringVMFlag},
2901 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2902 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2903 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2904 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2905 {CC"allocateMetaspace",
2906 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2907 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2908 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2909 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2910 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2911 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2912 (void*)&WB_GetNMethod },
2913 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2914 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2915 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2916 {CC"getCompilationActivityMode",
2917 CC"()I", (void*)&WB_GetCompilationActivityMode},
2918 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2919 (void*)&WB_GetMethodData },
2920 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2921 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2922 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2923 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2924 (void*)&WB_DefineModule },
2925 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2926 (void*)&WB_AddModuleExports },
2927 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2928 (void*)&WB_AddReadsModule },
2929 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2930 (void*)&WB_AddModuleExportsToAllUnnamed },
2931 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2932 (void*)&WB_AddModuleExportsToAll },
2933 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2934 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2935 {CC"isAsanEnabled", CC"()Z", (void*)&WB_IsAsanEnabled },
2936 {CC"isUbsanEnabled", CC"()Z", (void*)&WB_IsUbsanEnabled },
2937 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
2938 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2939 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2940 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2941 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2942 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2943 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2944 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2945 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2946 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2947 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2948 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2949 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2950 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2951 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2952 {CC"getMethodBooleanOption",
2953 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2954 (void*)&WB_GetMethodBooleaneOption},
2955 {CC"getMethodIntxOption",
2956 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2957 (void*)&WB_GetMethodIntxOption},
2958 {CC"getMethodUintxOption",
2959 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2960 (void*)&WB_GetMethodUintxOption},
2961 {CC"getMethodDoubleOption",
2962 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2963 (void*)&WB_GetMethodDoubleOption},
2964 {CC"getMethodStringOption",
2965 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2966 (void*)&WB_GetMethodStringOption},
2967 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2968 (void*)&WB_GetDefaultArchivePath},
2969 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2970 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2971 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2972 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2973 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2974 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2975 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2976 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2977 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2978 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2979 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2980 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2981 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2982 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2983 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2984 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2985
2986 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2987 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2988 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2989 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2990 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2991 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2992 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2993 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2994 (void*)&WB_AddCompilerDirective },
2995 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2996 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2997 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2998 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2999 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
3000 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
3001 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
3002 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
3003 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
3004 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
3005 (void*)&WB_ConcurrentGCRunTo},
3006 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
3007 (void*)&WB_CheckLibSpecifiesNoexecstack},
3008 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
3009 {CC"validateCgroup",
3010 CC"(ZLjava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
3011 (void*)&WB_ValidateCgroup },
3012 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
3013 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
3014 {CC"hostAvailableMemory", CC"()J", (void*)&WB_HostAvailableMemory },
3015 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
3016 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
3017 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
3018 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
3019 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
3020
3021 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
3022 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
3023 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
3024 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
3025 {CC"getTotalCommittedBytesInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedBytesInMetaspaceTestContext},
3026 {CC"getTotalUsedBytesInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedBytesInMetaspaceTestContext},
3027 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
3028 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
3029 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
3030 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
3031 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
3032
3033 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
3034 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
3035 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
3036
3037 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
3038 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
3039 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
3040 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
3041 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
3042 {CC"rss", CC"()J", (void*)&WB_Rss},
3043 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString},
3044 {CC"lockAndStuckInSafepoint", CC"()V", (void*)&WB_TakeLockAndHangInSafepoint},
3045 {CC"wordSize", CC"()J", (void*)&WB_WordSize},
3046 {CC"rootChunkWordSize", CC"()J", (void*)&WB_RootChunkWordSize},
3047 {CC"isStatic", CC"()Z", (void*)&WB_IsStaticallyLinked}
3048 };
3049
3050
3051 #undef CC
3052
3053 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
3054 {
3055 if (WhiteBoxAPI) {
3056 // Make sure that wbclass is loaded by the null classloader
3057 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
3058 Handle loader(THREAD, ik->class_loader());
3059 if (loader.is_null()) {
3060 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
3061 WhiteBox::set_used();
3062 }
3063 }
3064 }
3065 JVM_END