1 /*
2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/classLoaderData.hpp"
30 #include "classfile/modules.hpp"
31 #include "classfile/stringTable.hpp"
32 #include "code/codeCache.hpp"
33 #include "compiler/methodMatcher.hpp"
34 #include "compiler/directivesParser.hpp"
35 #include "gc/shared/gcConfig.hpp"
36 #include "gc/shared/genCollectedHeap.hpp"
37 #include "jvmtifiles/jvmtiEnv.hpp"
38 #include "memory/metadataFactory.hpp"
39 #include "memory/metaspaceShared.hpp"
40 #include "memory/iterator.hpp"
41 #include "memory/resourceArea.hpp"
42 #include "memory/universe.hpp"
43 #include "memory/oopFactory.hpp"
44 #include "oops/array.hpp"
45 #include "oops/constantPool.inline.hpp"
46 #include "oops/method.inline.hpp"
47 #include "oops/objArrayKlass.hpp"
48 #include "oops/objArrayOop.inline.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/typeArrayOop.inline.hpp"
51 #include "prims/wbtestmethods/parserTests.hpp"
52 #include "prims/whitebox.inline.hpp"
53 #include "runtime/arguments.hpp"
54 #include "runtime/compilationPolicy.hpp"
55 #include "runtime/deoptimization.hpp"
56 #include "runtime/flags/jvmFlag.hpp"
57 #include "runtime/frame.inline.hpp"
58 #include "runtime/handshake.hpp"
59 #include "runtime/interfaceSupport.inline.hpp"
60 #include "runtime/javaCalls.hpp"
61 #include "runtime/jniHandles.inline.hpp"
62 #include "runtime/os.hpp"
63 #include "runtime/sweeper.hpp"
64 #include "runtime/thread.hpp"
65 #include "runtime/threadSMR.hpp"
66 #include "runtime/vm_version.hpp"
67 #include "services/memoryService.hpp"
68 #include "utilities/align.hpp"
69 #include "utilities/debug.hpp"
70 #include "utilities/elfFile.hpp"
71 #include "utilities/exceptions.hpp"
72 #include "utilities/macros.hpp"
73 #if INCLUDE_CDS
74 #include "prims/cdsoffsets.hpp"
75 #endif // INCLUDE_CDS
76 #if INCLUDE_G1GC
77 #include "gc/g1/g1CollectedHeap.inline.hpp"
78 #include "gc/g1/g1ConcurrentMark.hpp"
79 #include "gc/g1/g1ConcurrentMarkThread.hpp"
80 #include "gc/g1/heapRegionRemSet.hpp"
81 #endif // INCLUDE_G1GC
82 #if INCLUDE_PARALLELGC
83 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
84 #include "gc/parallel/adjoiningGenerations.hpp"
85 #endif // INCLUDE_PARALLELGC
86 #if INCLUDE_NMT
87 #include "services/mallocSiteTable.hpp"
88 #include "services/memTracker.hpp"
89 #include "utilities/nativeCallStack.hpp"
90 #endif // INCLUDE_NMT
91
92 #ifdef LINUX
93 #include "osContainer_linux.hpp"
94 #endif
95
96 #define SIZE_T_MAX_VALUE ((size_t) -1)
97
98 #define CHECK_JNI_EXCEPTION_(env, value) \
99 do { \
100 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
101 THREAD->clear_pending_jni_exception_check(); \
102 if (HAS_PENDING_EXCEPTION) { \
103 return(value); \
104 } \
105 } while (0)
106
107 #define CHECK_JNI_EXCEPTION(env) \
108 do { \
109 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
110 THREAD->clear_pending_jni_exception_check(); \
111 if (HAS_PENDING_EXCEPTION) { \
112 return; \
113 } \
114 } while (0)
115
116 bool WhiteBox::_used = false;
117 volatile bool WhiteBox::compilation_locked = false;
118
119 class VM_WhiteBoxOperation : public VM_Operation {
120 public:
121 VM_WhiteBoxOperation() { }
122 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
123 bool allow_nested_vm_operations() const { return true; }
124 };
125
126
127 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
128 return (jlong)(void*)JNIHandles::resolve(obj);
129 WB_END
130
131 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
132 return heapOopSize;
133 WB_END
134
135 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
136 return os::vm_page_size();
137 WB_END
138
139 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
140 return os::vm_allocation_granularity();
141 WB_END
142
143 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
144 return os::large_page_size();
145 WB_END
146
147 class WBIsKlassAliveClosure : public KlassClosure {
148 Symbol* _name;
149 bool _found;
150 public:
151 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
152
153 void do_klass(Klass* k) {
154 if (_found) return;
155 Symbol* ksym = k->name();
156 if (ksym->fast_compare(_name) == 0) {
157 _found = true;
158 }
159 }
160
161 bool found() const {
162 return _found;
163 }
164 };
165
166 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
167 oop h_name = JNIHandles::resolve(name);
168 if (h_name == NULL) return false;
169 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
170 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
171
172 WBIsKlassAliveClosure closure(sym);
173 ClassLoaderDataGraph::classes_do(&closure);
174
175 return closure.found();
176 WB_END
177
178 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
179 #if INCLUDE_JVMTI
180 ResourceMark rm;
181 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
182 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
183 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
184 assert(err == JVMTI_ERROR_NONE, "must not fail");
185 #endif
186 }
187 WB_END
188
189 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
190 #if INCLUDE_JVMTI
191 ResourceMark rm;
192 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
193 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
194 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
195 assert(err == JVMTI_ERROR_NONE, "must not fail");
196 #endif
197 }
198 WB_END
199
200
201 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
202 return (jlong)Arguments::max_heap_for_compressed_oops();
203 }
204 WB_END
205
206 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
207 CollectorPolicy * p = Universe::heap()->collector_policy();
208 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
209 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
210 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
211 p->space_alignment(), p->heap_alignment());
212 }
213 WB_END
214
215 #ifndef PRODUCT
216 // Forward declaration
217 void TestReservedSpace_test();
218 void TestReserveMemorySpecial_test();
219 void TestVirtualSpace_test();
220 void TestMetaspaceUtils_test();
221 #endif
222
223 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
224 #ifndef PRODUCT
225 TestReservedSpace_test();
226 TestReserveMemorySpecial_test();
227 TestVirtualSpace_test();
228 TestMetaspaceUtils_test();
229 #endif
230 WB_END
231
232 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
233 size_t granularity = os::vm_allocation_granularity();
234 ReservedHeapSpace rhs(100 * granularity, granularity, false);
235 VirtualSpace vs;
236 vs.initialize(rhs, 50 * granularity);
237
238 // Check if constraints are complied
239 if (!( UseCompressedOops && rhs.base() != NULL &&
240 Universe::narrow_oop_base() != NULL &&
241 Universe::narrow_oop_use_implicit_null_checks() )) {
242 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
243 "\tUseCompressedOops is %d\n"
244 "\trhs.base() is " PTR_FORMAT "\n"
245 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
246 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
247 UseCompressedOops,
248 p2i(rhs.base()),
249 p2i(Universe::narrow_oop_base()),
250 Universe::narrow_oop_use_implicit_null_checks());
251 return;
252 }
253 tty->print_cr("Reading from no access area... ");
254 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
255 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
256 WB_END
257
258 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
259 size_t magnitude, size_t iterations) {
260 size_t granularity = os::vm_allocation_granularity();
261 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
262 VirtualSpace vs;
263 if (!vs.initialize(rhs, 0)) {
264 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
265 return 3;
266 }
267
268 int seed = os::random();
269 tty->print_cr("Random seed is %d", seed);
270 os::init_random(seed);
271
272 for (size_t i = 0; i < iterations; i++) {
273
274 // Whether we will shrink or grow
275 bool shrink = os::random() % 2L == 0;
276
277 // Get random delta to resize virtual space
278 size_t delta = (size_t)os::random() % magnitude;
279
280 // If we are about to shrink virtual space below zero, then expand instead
281 if (shrink && vs.committed_size() < delta) {
282 shrink = false;
283 }
284
285 // Resizing by delta
286 if (shrink) {
287 vs.shrink_by(delta);
288 } else {
289 // If expanding fails expand_by will silently return false
290 vs.expand_by(delta, true);
291 }
292 }
293 return 0;
294 }
295
296 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
297 jlong reserved_space_size, jlong magnitude, jlong iterations))
298 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
299 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
300 iterations);
301 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
302 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
303 return 1;
304 }
305
306 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
307 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
308 if (sizeof(size_t) < sizeof(jlong)) {
309 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
310 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
311 || iterations > size_t_max_value) {
312 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
313 return 2;
314 }
315 }
316
317 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
318 (size_t) magnitude, (size_t) iterations);
319 WB_END
320
321 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
322 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
323 WB_END
324
325 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
326 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
327 WB_END
328
329 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
330 return GCConfig::is_gc_selected_ergonomically();
331 WB_END
332
333 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
334 oop p = JNIHandles::resolve(obj);
335 #if INCLUDE_G1GC
336 if (UseG1GC) {
337 G1CollectedHeap* g1h = G1CollectedHeap::heap();
338 const HeapRegion* hr = g1h->heap_region_containing(p);
339 if (hr == NULL) {
340 return false;
341 }
342 return !(hr->is_young());
343 }
344 #endif
345 #if INCLUDE_PARALLELGC
346 if (UseParallelGC) {
347 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
348 return !psh->is_in_young(p);
349 }
350 #endif // INCLUDE_PARALLELGC
351 GenCollectedHeap* gch = GenCollectedHeap::heap();
352 return !gch->is_in_young(p);
353 WB_END
354
355 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
356 oop p = JNIHandles::resolve(obj);
357 return p->size() * HeapWordSize;
358 WB_END
359
360 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
361 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
362 return (jlong)alignment;
363 WB_END
364
365 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
366 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
367 return (jlong)alignment;
368 WB_END
369
370 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
371 return Universe::heap()->supports_concurrent_phase_control();
372 WB_END
373
374 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
375 const char* const* phases = Universe::heap()->concurrent_phases();
376 jint nphases = 0;
377 for ( ; phases[nphases] != NULL; ++nphases) ;
378
379 ResourceMark rm(thread);
380 ThreadToNativeFromVM ttn(thread);
381 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
382 CHECK_JNI_EXCEPTION_(env, NULL);
383
384 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
385 CHECK_JNI_EXCEPTION_(env, NULL);
386
387 // If push fails, return with pending exception.
388 if (env->PushLocalFrame(nphases) < 0) return NULL;
389 for (jint i = 0; i < nphases; ++i) {
390 jstring phase = env->NewStringUTF(phases[i]);
391 CHECK_JNI_EXCEPTION_(env, NULL);
392 env->SetObjectArrayElement(result, i, phase);
393 CHECK_JNI_EXCEPTION_(env, NULL);
394 }
395 env->PopLocalFrame(NULL);
396
397 return result;
398 WB_END
399
400 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
401 Handle h_name(THREAD, JNIHandles::resolve(name));
402 ResourceMark rm;
403 const char* c_name = java_lang_String::as_utf8_string(h_name());
404 return Universe::heap()->request_concurrent_phase(c_name);
405 WB_END
406
407 #if INCLUDE_G1GC
408
409 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
410 if (UseG1GC) {
411 G1CollectedHeap* g1h = G1CollectedHeap::heap();
412 oop result = JNIHandles::resolve(obj);
413 const HeapRegion* hr = g1h->heap_region_containing(result);
414 return hr->is_humongous();
415 }
416 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
417 WB_END
418
419 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
420 if (UseG1GC) {
421 G1CollectedHeap* g1h = G1CollectedHeap::heap();
422 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
423 return hr->is_humongous();
424 }
425 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
426 WB_END
427
428 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
429 if (UseG1GC) {
430 G1CollectedHeap* g1h = G1CollectedHeap::heap();
431 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
432 return hr->is_free();
433 }
434 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
435 WB_END
436
437 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
438 if (UseG1GC) {
439 G1CollectedHeap* g1h = G1CollectedHeap::heap();
440 size_t nr = g1h->max_regions();
441 return (jlong)nr;
442 }
443 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
444 WB_END
445
446 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
447 if (UseG1GC) {
448 G1CollectedHeap* g1h = G1CollectedHeap::heap();
449 size_t nr = g1h->num_free_regions();
450 return (jlong)nr;
451 }
452 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
453 WB_END
454
455 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
456 if (UseG1GC) {
457 G1CollectedHeap* g1h = G1CollectedHeap::heap();
458 return g1h->concurrent_mark()->cm_thread()->during_cycle();
459 }
460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
461 WB_END
462
463 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
464 if (UseG1GC) {
465 G1CollectedHeap* g1h = G1CollectedHeap::heap();
466 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
467 g1h->collect(GCCause::_wb_conc_mark);
468 return true;
469 }
470 return false;
471 }
472 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
473 WB_END
474
475 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
476 if (UseG1GC) {
477 return (jint)HeapRegion::GrainBytes;
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
480 WB_END
481
482 #endif // INCLUDE_G1GC
483
484 #if INCLUDE_PARALLELGC
485
486 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
487 if (UseParallelGC) {
488 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
489 }
490 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
491 WB_END
492
493 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
494 if (UseParallelGC) {
495 return ParallelScavengeHeap::heap()->generation_alignment();
496 }
497 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
498 WB_END
499
500 #endif // INCLUDE_PARALLELGC
501
502 #if INCLUDE_G1GC
503
504 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
505 if (UseG1GC) {
506 ResourceMark rm(THREAD);
507 G1CollectedHeap* g1h = G1CollectedHeap::heap();
508 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
509 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
510 return JNIHandles::make_local(env, h());
511 }
512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
513 WB_END
514
515 class OldRegionsLivenessClosure: public HeapRegionClosure {
516
517 private:
518 const int _liveness;
519 size_t _total_count;
520 size_t _total_memory;
521 size_t _total_memory_to_free;
522
523 public:
524 OldRegionsLivenessClosure(int liveness) :
525 _liveness(liveness),
526 _total_count(0),
527 _total_memory(0),
528 _total_memory_to_free(0) { }
529
530 size_t total_count() { return _total_count; }
531 size_t total_memory() { return _total_memory; }
532 size_t total_memory_to_free() { return _total_memory_to_free; }
533
534 bool do_heap_region(HeapRegion* r) {
535 if (r->is_old()) {
536 size_t prev_live = r->marked_bytes();
537 size_t live = r->live_bytes();
538 size_t size = r->used();
539 size_t reg_size = HeapRegion::GrainBytes;
540 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
541 _total_memory += size;
542 ++_total_count;
543 if (size == reg_size) {
544 // we don't include non-full regions since they are unlikely included in mixed gc
545 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
546 _total_memory_to_free += size - prev_live;
547 }
548 }
549 }
550 return false;
551 }
552 };
553
554
555 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
556 if (!UseG1GC) {
557 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
558 }
559 if (liveness < 0) {
560 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
561 }
562
563 G1CollectedHeap* g1h = G1CollectedHeap::heap();
564 OldRegionsLivenessClosure rli(liveness);
565 g1h->heap_region_iterate(&rli);
566
567 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
568 result->long_at_put(0, rli.total_count());
569 result->long_at_put(1, rli.total_memory());
570 result->long_at_put(2, rli.total_memory_to_free());
571 return (jlongArray) JNIHandles::make_local(env, result);
572 WB_END
573
574 #endif // INCLUDE_G1GC
575
576 #if INCLUDE_NMT
577 // Alloc memory using the test memory type so that we can use that to see if
578 // NMT picks it up correctly
579 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
580 jlong addr = 0;
581 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
582 return addr;
583 WB_END
584
585 // Alloc memory with pseudo call stack. The test can create psudo malloc
586 // allocation site to stress the malloc tracking.
587 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
588 address pc = (address)(size_t)pseudo_stack;
589 NativeCallStack stack(&pc, 1);
590 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
591 WB_END
592
593 // Free the memory allocated by NMTAllocTest
594 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
595 os::free((void*)(uintptr_t)mem);
596 WB_END
597
598 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
599 jlong addr = 0;
600
601 addr = (jlong)(uintptr_t)os::reserve_memory(size);
602 MemTracker::record_virtual_memory_type((address)addr, mtTest);
603
604 return addr;
605 WB_END
606
607 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
608 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
609 MemTracker::record_virtual_memory_type((address)addr, mtTest);
610
611 return addr;
612 WB_END
613
614 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
615 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
616 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
617 WB_END
618
619 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
620 os::uncommit_memory((char *)(uintptr_t)addr, size);
621 WB_END
622
623 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
624 os::release_memory((char *)(uintptr_t)addr, size);
625 WB_END
626
627 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
628 // Test that we can downgrade NMT levels but not upgrade them.
629 if (MemTracker::tracking_level() == NMT_off) {
630 MemTracker::transition_to(NMT_off);
631 return MemTracker::tracking_level() == NMT_off;
632 } else {
633 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
634 MemTracker::transition_to(NMT_summary);
635 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
636
637 // Can't go to detail once NMT is set to summary.
638 MemTracker::transition_to(NMT_detail);
639 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
640
641 // Shutdown sets tracking level to minimal.
642 MemTracker::shutdown();
643 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
644
645 // Once the tracking level is minimal, we cannot increase to summary.
646 // The code ignores this request instead of asserting because if the malloc site
647 // table overflows in another thread, it tries to change the code to summary.
648 MemTracker::transition_to(NMT_summary);
649 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
650
651 // Really can never go up to detail, verify that the code would never do this.
652 MemTracker::transition_to(NMT_detail);
653 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
654 return MemTracker::tracking_level() == NMT_minimal;
655 }
656 WB_END
657
658 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
659 int hash_size = MallocSiteTable::hash_buckets();
660 assert(hash_size > 0, "NMT hash_size should be > 0");
661 return (jint)hash_size;
662 WB_END
663 #endif // INCLUDE_NMT
664
665 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
666 assert(method != NULL, "method should not be null");
667 ThreadToNativeFromVM ttn(thread);
668 return env->FromReflectedMethod(method);
669 }
670
671 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
672 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
673 private:
674 int _result;
675 const bool _make_not_entrant;
676 public:
677 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
678 _result(0), _make_not_entrant(make_not_entrant) { }
679 int result() const { return _result; }
680
681 void doit() {
682 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
683 if (t->has_last_Java_frame()) {
684 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
685 frame* f = fst.current();
686 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
687 RegisterMap* reg_map = fst.register_map();
688 Deoptimization::deoptimize(t, *f, reg_map);
689 if (_make_not_entrant) {
690 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
691 assert(cm != NULL, "sanity check");
692 cm->make_not_entrant();
693 }
694 ++_result;
695 }
696 }
697 }
698 }
699 }
700 };
701
702 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
703 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
704 VMThread::execute(&op);
705 return op.result();
706 WB_END
707
708 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
709 MutexLockerEx mu(Compile_lock);
710 CodeCache::mark_all_nmethods_for_deoptimization();
711 VM_Deoptimize op;
712 VMThread::execute(&op);
713 WB_END
714
715 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
716 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
717 int result = 0;
718 CHECK_JNI_EXCEPTION_(env, result);
719 MutexLockerEx mu(Compile_lock);
720 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
721 if (is_osr) {
722 result += mh->mark_osr_nmethods();
723 } else if (mh->code() != NULL) {
724 mh->code()->mark_for_deoptimization();
725 ++result;
726 }
727 result += CodeCache::mark_for_deoptimization(mh());
728 if (result > 0) {
729 VM_Deoptimize op;
730 VMThread::execute(&op);
731 }
732 return result;
733 WB_END
734
735 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
736 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
737 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
738 MutexLockerEx mu(Compile_lock);
739 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
740 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
741 if (code == NULL) {
742 return JNI_FALSE;
743 }
744 return (code->is_alive() && !code->is_marked_for_deoptimization());
745 WB_END
746
747 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
748 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
749 return false;
750 }
751 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
752 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
753 MutexLockerEx mu(Compile_lock);
754 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
755 if (is_osr) {
756 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
757 } else {
758 return CompilationPolicy::can_be_compiled(mh, comp_level);
759 }
760 WB_END
761
762 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
763 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
764 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
765 MutexLockerEx mu(Compile_lock);
766 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
767 return mh->queued_for_compilation();
768 WB_END
769
770 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
771 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
772 return false; // Intrinsic is not available on a non-existent compilation level.
773 }
774 jmethodID method_id, compilation_context_id;
775 method_id = reflected_method_to_jmid(thread, env, method);
776 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
777 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
778
779 DirectiveSet* directive;
780 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
781 assert(comp != NULL, "compiler not available");
782 if (compilation_context != NULL) {
783 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
784 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
785 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
786 directive = DirectivesStack::getMatchingDirective(cch, comp);
787 } else {
788 // Calling with NULL matches default directive
789 directive = DirectivesStack::getDefaultDirective(comp);
790 }
791 bool result = comp->is_intrinsic_available(mh, directive);
792 DirectivesStack::release(directive);
793 return result;
794 WB_END
795
796 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
797 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
798 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
799 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
800 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
801 return (code != NULL ? code->comp_level() : CompLevel_none);
802 WB_END
803
804 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
805 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
806 CHECK_JNI_EXCEPTION(env);
807 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
808 if (is_osr) {
809 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
810 } else {
811 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
812 }
813 WB_END
814
815 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
816 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
817 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
818 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
819 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
820 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
821 WB_END
822
823 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
825 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
827 bool result = mh->dont_inline();
828 mh->set_dont_inline(value == JNI_TRUE);
829 return result;
830 WB_END
831
832 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
833 if (comp_level == CompLevel_any) {
834 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
835 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
836 } else {
837 return CompileBroker::queue_size(comp_level);
838 }
839 WB_END
840
841 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
842 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
843 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
845 bool result = mh->force_inline();
846 mh->set_force_inline(value == JNI_TRUE);
847 return result;
848 WB_END
849
850 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
851 // Screen for unavailable/bad comp level or null method
852 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
853 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) {
854 return false;
855 }
856
857 // Check if compilation is blocking
858 methodHandle mh(THREAD, method);
859 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
860 bool is_blocking = !directive->BackgroundCompilationOption;
861 DirectivesStack::release(directive);
862
863 // Compile method and check result
864 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
865 MutexLockerEx mu(Compile_lock);
866 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL);
867 }
868
869 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
870 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
871 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
872 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
873 WB_END
874
875 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
876 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
877 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
878 WB_END
879
880 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
881 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
882 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
883
884 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
885 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
886 bool result = directive->PrintAssemblyOption;
887 DirectivesStack::release(directive);
888
889 return result;
890 WB_END
891
892 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
893 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
894 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
895
896 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
897
898 ResourceMark rm;
899 const char* error_msg = NULL;
900 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
901 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
902
903 if (m == NULL) {
904 assert(error_msg != NULL, "Always have an error message");
905 tty->print_cr("Got error: %s", error_msg);
906 return -1; // Pattern failed
907 }
908
909 // Pattern works - now check if it matches
910 int result;
911 if (m->match(mh, InlineMatcher::force_inline)) {
912 result = 2; // Force inline match
913 } else if (m->match(mh, InlineMatcher::dont_inline)) {
914 result = 1; // Dont inline match
915 } else {
916 result = 0; // No match
917 }
918 delete m;
919 return result;
920 WB_END
921
922 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
923 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
924 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
925
926 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
927
928 ResourceMark rm;
929 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
930
931 const char* error_msg = NULL;
932
933 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
934 if (m == NULL) {
935 assert(error_msg != NULL, "Must have error_msg");
936 tty->print_cr("Got error: %s", error_msg);
937 return -1;
938 }
939
940 // Pattern works - now check if it matches
941 int result = m->matches(mh);
942 delete m;
943 assert(result == 0 || result == 1, "Result out of range");
944 return result;
945 WB_END
946
947 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
948 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
949 CHECK_JNI_EXCEPTION(env);
950 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
951 MutexLockerEx mu(Compile_lock);
952 MethodData* mdo = mh->method_data();
953 MethodCounters* mcs = mh->method_counters();
954
955 if (mdo != NULL) {
956 mdo->init();
957 ResourceMark rm;
958 int arg_count = mdo->method()->size_of_parameters();
959 for (int i = 0; i < arg_count; i++) {
960 mdo->set_arg_modified(i, 0);
961 }
962 MutexLockerEx mu(mdo->extra_data_lock());
963 mdo->clean_method_data(/*always_clean*/true);
964 }
965
966 mh->clear_not_c1_compilable();
967 mh->clear_not_c2_compilable();
968 mh->clear_not_c2_osr_compilable();
969 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
970 if (mcs != NULL) {
971 mcs->backedge_counter()->init();
972 mcs->invocation_counter()->init();
973 mcs->set_interpreter_invocation_count(0);
974 mcs->set_interpreter_throwout_count(0);
975
976 #ifdef TIERED
977 mcs->set_rate(0.0F);
978 mh->set_prev_event_count(0);
979 mh->set_prev_time(0);
980 #endif
981 }
982 WB_END
983
984 template <typename T>
985 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
986 if (name == NULL) {
987 return false;
988 }
989 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
990 const char* flag_name = env->GetStringUTFChars(name, NULL);
991 CHECK_JNI_EXCEPTION_(env, false);
992 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
993 env->ReleaseStringUTFChars(name, flag_name);
994 return (result == JVMFlag::SUCCESS);
995 }
996
997 template <typename T>
998 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
999 if (name == NULL) {
1000 return false;
1001 }
1002 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1003 const char* flag_name = env->GetStringUTFChars(name, NULL);
1004 CHECK_JNI_EXCEPTION_(env, false);
1005 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1006 env->ReleaseStringUTFChars(name, flag_name);
1007 return (result == JVMFlag::SUCCESS);
1008 }
1009
1010 template <typename T>
1011 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1012 ResourceMark rm(thread);
1013 jclass clazz = env->FindClass(name->as_C_string());
1014 CHECK_JNI_EXCEPTION_(env, NULL);
1015 jmethodID methodID = env->GetStaticMethodID(clazz,
1016 vmSymbols::valueOf_name()->as_C_string(),
1017 sig->as_C_string());
1018 CHECK_JNI_EXCEPTION_(env, NULL);
1019 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1020 CHECK_JNI_EXCEPTION_(env, NULL);
1021 return result;
1022 }
1023
1024 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1025 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1026 }
1027 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1028 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1029 }
1030 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1031 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1032 }
1033 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1034 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1035 }*/
1036 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1037 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1038 }
1039
1040 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1041 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1042 const char* flag_name = env->GetStringUTFChars(name, NULL);
1043 CHECK_JNI_EXCEPTION_(env, NULL);
1044 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1045 env->ReleaseStringUTFChars(name, flag_name);
1046 return result;
1047 }
1048
1049 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1050 JVMFlag* flag = getVMFlag(thread, env, name);
1051 return (flag != NULL) && flag->is_constant_in_binary();
1052 WB_END
1053
1054 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1055 JVMFlag* flag = getVMFlag(thread, env, name);
1056 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1057 WB_END
1058
1059 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1060 bool result;
1061 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1062 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1063 return booleanBox(thread, env, result);
1064 }
1065 return NULL;
1066 WB_END
1067
1068 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1069 int result;
1070 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1071 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1072 return longBox(thread, env, result);
1073 }
1074 return NULL;
1075 WB_END
1076
1077 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1078 uint result;
1079 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1080 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1081 return longBox(thread, env, result);
1082 }
1083 return NULL;
1084 WB_END
1085
1086 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1087 intx result;
1088 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1089 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1090 return longBox(thread, env, result);
1091 }
1092 return NULL;
1093 WB_END
1094
1095 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1096 uintx result;
1097 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1098 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1099 return longBox(thread, env, result);
1100 }
1101 return NULL;
1102 WB_END
1103
1104 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1105 uint64_t result;
1106 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1107 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1108 return longBox(thread, env, result);
1109 }
1110 return NULL;
1111 WB_END
1112
1113 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1114 uintx result;
1115 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1117 return longBox(thread, env, result);
1118 }
1119 return NULL;
1120 WB_END
1121
1122 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1123 double result;
1124 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1126 return doubleBox(thread, env, result);
1127 }
1128 return NULL;
1129 WB_END
1130
1131 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1132 ccstr ccstrResult;
1133 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1134 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1135 jstring result = env->NewStringUTF(ccstrResult);
1136 CHECK_JNI_EXCEPTION_(env, NULL);
1137 return result;
1138 }
1139 return NULL;
1140 WB_END
1141
1142 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1143 bool result = value == JNI_TRUE ? true : false;
1144 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1145 WB_END
1146
1147 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1148 int result = value;
1149 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1150 WB_END
1151
1152 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1153 uint result = value;
1154 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1155 WB_END
1156
1157 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1158 intx result = value;
1159 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1160 WB_END
1161
1162 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1163 uintx result = value;
1164 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1165 WB_END
1166
1167 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1168 uint64_t result = value;
1169 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1170 WB_END
1171
1172 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1173 size_t result = value;
1174 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1175 WB_END
1176
1177 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1178 double result = value;
1179 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1180 WB_END
1181
1182 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1183 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1184 const char* ccstrValue;
1185 if (value == NULL) {
1186 ccstrValue = NULL;
1187 }
1188 else {
1189 ccstrValue = env->GetStringUTFChars(value, NULL);
1190 CHECK_JNI_EXCEPTION(env);
1191 }
1192 ccstr ccstrResult = ccstrValue;
1193 bool needFree;
1194 {
1195 ThreadInVMfromNative ttvfn(thread); // back to VM
1196 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1197 }
1198 if (value != NULL) {
1199 env->ReleaseStringUTFChars(value, ccstrValue);
1200 }
1201 if (needFree) {
1202 FREE_C_HEAP_ARRAY(char, ccstrResult);
1203 }
1204 WB_END
1205
1206 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1207 WhiteBox::compilation_locked = true;
1208 WB_END
1209
1210 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1211 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1212 WhiteBox::compilation_locked = false;
1213 mo.notify_all();
1214 WB_END
1215
1216 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1217 // Force a code cache sweep and block until it finished
1218 NMethodSweeper::force_sweep();
1219 WB_END
1220
1221 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1222 ResourceMark rm(THREAD);
1223 int len;
1224 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1225 return (StringTable::lookup(name, len) != NULL);
1226 WB_END
1227
1228 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1229 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1230 Universe::heap()->collect(GCCause::_wb_full_gc);
1231 #if INCLUDE_G1GC
1232 if (UseG1GC) {
1233 // Needs to be cleared explicitly for G1
1234 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1235 }
1236 #endif // INCLUDE_G1GC
1237 WB_END
1238
1239 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1240 Universe::heap()->collect(GCCause::_wb_young_gc);
1241 WB_END
1242
1243 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1244 // static+volatile in order to force the read to happen
1245 // (not be eliminated by the compiler)
1246 static char c;
1247 static volatile char* p;
1248
1249 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1250 if (p == NULL) {
1251 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1252 }
1253
1254 c = *p;
1255 WB_END
1256
1257 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1258 const char* features = VM_Version::features_string();
1259 ThreadToNativeFromVM ttn(thread);
1260 jstring features_string = env->NewStringUTF(features);
1261
1262 CHECK_JNI_EXCEPTION_(env, NULL);
1263
1264 return features_string;
1265 WB_END
1266
1267 int WhiteBox::get_blob_type(const CodeBlob* code) {
1268 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1269 if (code->is_aot()) {
1270 return -1;
1271 }
1272 return CodeCache::get_code_heap(code)->code_blob_type();
1273 }
1274
1275 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1276 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1277 return CodeCache::get_code_heap(blob_type);
1278 }
1279
1280 struct CodeBlobStub {
1281 CodeBlobStub(const CodeBlob* blob) :
1282 name(os::strdup(blob->name())),
1283 size(blob->size()),
1284 blob_type(WhiteBox::get_blob_type(blob)),
1285 address((jlong) blob) { }
1286 ~CodeBlobStub() { os::free((void*) name); }
1287 const char* const name;
1288 const jint size;
1289 const jint blob_type;
1290 const jlong address;
1291 };
1292
1293 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1294 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1295 CHECK_JNI_EXCEPTION_(env, NULL);
1296 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1297
1298 jstring name = env->NewStringUTF(cb->name);
1299 CHECK_JNI_EXCEPTION_(env, NULL);
1300 env->SetObjectArrayElement(result, 0, name);
1301
1302 jobject obj = integerBox(thread, env, cb->size);
1303 CHECK_JNI_EXCEPTION_(env, NULL);
1304 env->SetObjectArrayElement(result, 1, obj);
1305
1306 obj = integerBox(thread, env, cb->blob_type);
1307 CHECK_JNI_EXCEPTION_(env, NULL);
1308 env->SetObjectArrayElement(result, 2, obj);
1309
1310 obj = longBox(thread, env, cb->address);
1311 CHECK_JNI_EXCEPTION_(env, NULL);
1312 env->SetObjectArrayElement(result, 3, obj);
1313
1314 return result;
1315 }
1316
1317 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1318 ResourceMark rm(THREAD);
1319 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1320 CHECK_JNI_EXCEPTION_(env, NULL);
1321 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1322 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1323 jobjectArray result = NULL;
1324 if (code == NULL) {
1325 return result;
1326 }
1327 int comp_level = code->comp_level();
1328 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1329
1330 ThreadToNativeFromVM ttn(thread);
1331 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1332 CHECK_JNI_EXCEPTION_(env, NULL);
1333 result = env->NewObjectArray(5, clazz, NULL);
1334 if (result == NULL) {
1335 return result;
1336 }
1337
1338 CodeBlobStub stub(code);
1339 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1340 CHECK_JNI_EXCEPTION_(env, NULL);
1341 env->SetObjectArrayElement(result, 0, codeBlob);
1342
1343 jobject level = integerBox(thread, env, comp_level);
1344 CHECK_JNI_EXCEPTION_(env, NULL);
1345 env->SetObjectArrayElement(result, 1, level);
1346
1347 jbyteArray insts = env->NewByteArray(insts_size);
1348 CHECK_JNI_EXCEPTION_(env, NULL);
1349 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1350 env->SetObjectArrayElement(result, 2, insts);
1351
1352 jobject id = integerBox(thread, env, code->compile_id());
1353 CHECK_JNI_EXCEPTION_(env, NULL);
1354 env->SetObjectArrayElement(result, 3, id);
1355
1356 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1357 CHECK_JNI_EXCEPTION_(env, NULL);
1358 env->SetObjectArrayElement(result, 4, entry_point);
1359
1360 return result;
1361 WB_END
1362
1363 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1364 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1365 BufferBlob* blob;
1366 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1367 if (full_size < size) {
1368 full_size += align_up(size - full_size, oopSize);
1369 }
1370 {
1371 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1372 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1373 if (blob != NULL) {
1374 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1375 }
1376 }
1377 // Track memory usage statistic after releasing CodeCache_lock
1378 MemoryService::track_code_cache_memory_usage();
1379 return blob;
1380 }
1381
1382 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1383 if (size < 0) {
1384 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1385 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1386 }
1387 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1388 WB_END
1389
1390 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1391 if (addr == 0) {
1392 return;
1393 }
1394 BufferBlob::free((BufferBlob*) addr);
1395 WB_END
1396
1397 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1398 ResourceMark rm;
1399 GrowableArray<CodeBlobStub*> blobs;
1400 {
1401 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1402 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1403 if (heap == NULL) {
1404 return NULL;
1405 }
1406 for (CodeBlob* cb = (CodeBlob*) heap->first();
1407 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1408 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1409 new (stub) CodeBlobStub(cb);
1410 blobs.append(stub);
1411 }
1412 }
1413 if (blobs.length() == 0) {
1414 return NULL;
1415 }
1416 ThreadToNativeFromVM ttn(thread);
1417 jobjectArray result = NULL;
1418 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1419 CHECK_JNI_EXCEPTION_(env, NULL);
1420 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1421 CHECK_JNI_EXCEPTION_(env, NULL);
1422 if (result == NULL) {
1423 return result;
1424 }
1425 int i = 0;
1426 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1427 it != blobs.end(); ++it) {
1428 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1429 CHECK_JNI_EXCEPTION_(env, NULL);
1430 env->SetObjectArrayElement(result, i, obj);
1431 CHECK_JNI_EXCEPTION_(env, NULL);
1432 ++i;
1433 }
1434 return result;
1435 WB_END
1436
1437 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1438 return CompileBroker::get_compilation_activity_mode();
1439 WB_END
1440
1441 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1442 if (addr == 0) {
1443 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1444 "WB_GetCodeBlob: addr is null");
1445 }
1446 ThreadToNativeFromVM ttn(thread);
1447 CodeBlobStub stub((CodeBlob*) addr);
1448 return codeBlob2objectArray(thread, env, &stub);
1449 WB_END
1450
1451 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1452 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1453 CHECK_JNI_EXCEPTION_(env, 0);
1454 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1455 return (jlong) mh->method_data();
1456 WB_END
1457
1458 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1459 return (jlong) Thread::current()->stack_size();
1460 WB_END
1461
1462 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1463 JavaThread* t = JavaThread::current();
1464 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1465 WB_END
1466
1467
1468 int WhiteBox::array_bytes_to_length(size_t bytes) {
1469 return Array<u1>::bytes_to_length(bytes);
1470 }
1471
1472 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1473 if (size < 0) {
1474 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1475 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1476 }
1477
1478 oop class_loader_oop = JNIHandles::resolve(class_loader);
1479 ClassLoaderData* cld = class_loader_oop != NULL
1480 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1481 : ClassLoaderData::the_null_class_loader_data();
1482
1483 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1484
1485 return (jlong)(uintptr_t)metadata;
1486 WB_END
1487
1488 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1489 oop class_loader_oop = JNIHandles::resolve(class_loader);
1490 ClassLoaderData* cld = class_loader_oop != NULL
1491 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1492 : ClassLoaderData::the_null_class_loader_data();
1493
1494 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1495 WB_END
1496
1497 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1498 jstring version, jstring location, jobjectArray packages))
1499 ResourceMark rm(THREAD);
1500
1501 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1502 objArrayHandle packages_h(THREAD, packages_oop);
1503 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1504
1505 char** pkgs = NULL;
1506 if (num_packages > 0) {
1507 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1508 for (int x = 0; x < num_packages; x++) {
1509 oop pkg_str = packages_h->obj_at(x);
1510 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1511 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1512 err_msg("Bad package name"));
1513 }
1514 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1515 }
1516 }
1517 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1518 WB_END
1519
1520 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1521 ResourceMark rm(THREAD);
1522 char* package_name = NULL;
1523 if (package != NULL) {
1524 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1525 }
1526 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1527 WB_END
1528
1529 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1530 ResourceMark rm(THREAD);
1531 char* package_name = NULL;
1532 if (package != NULL) {
1533 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1534 }
1535 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1536 WB_END
1537
1538 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1539 ResourceMark rm(THREAD);
1540 char* package_name = NULL;
1541 if (package != NULL) {
1542 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1543 }
1544 Modules::add_module_exports(module, package_name, NULL, CHECK);
1545 WB_END
1546
1547 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1548 Modules::add_reads_module(from_module, source_module, CHECK);
1549 WB_END
1550
1551 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1552 if (inc < 0) {
1553 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1554 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1555 }
1556
1557 jlong max_size_t = (jlong) ((size_t) -1);
1558 if (inc > max_size_t) {
1559 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1560 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1561 }
1562
1563 size_t new_cap_until_GC = 0;
1564 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1565 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1566 if (!success) {
1567 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1568 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1569 "due to contention with another thread");
1570 }
1571 return (jlong) new_cap_until_GC;
1572 WB_END
1573
1574 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1575 return (jlong) MetaspaceGC::capacity_until_GC();
1576 WB_END
1577
1578 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1579 return MetaspaceGC::should_concurrent_collect();
1580 WB_END
1581
1582 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1583 return (jlong)Metaspace::reserve_alignment();
1584 WB_END
1585
1586 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1587 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1588 Monitor::_safepoint_check_always :
1589 Monitor::_safepoint_check_never;
1590 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1591 attemptedNoSafepointValue == JNI_TRUE);
1592 WB_END
1593
1594 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1595 oop obj_oop = JNIHandles::resolve(obj);
1596 return (jboolean) obj_oop->mark()->has_monitor();
1597 WB_END
1598
1599 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1600 VM_ForceSafepoint force_safepoint_op;
1601 VMThread::execute(&force_safepoint_op);
1602 WB_END
1603
1604 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1605 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1606 return (jlong) ik->constants();
1607 WB_END
1608
1609 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1610 return ConstantPool::CPCACHE_INDEX_TAG;
1611 WB_END
1612
1613 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1614 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1615 ConstantPool* cp = ik->constants();
1616 if (cp->cache() == NULL) {
1617 return -1;
1618 }
1619 return cp->cache()->length();
1620 WB_END
1621
1622 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1623 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1624 ConstantPool* cp = ik->constants();
1625 if (cp->cache() == NULL) {
1626 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1627 }
1628 jint cpci = index;
1629 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1630 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1631 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1632 }
1633 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1634 return cpi;
1635 WB_END
1636
1637 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1638 return ConstantPool::encode_invokedynamic_index(index);
1639 WB_END
1640
1641 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1642 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1643 VMThread::execute(&clear_ics);
1644 WB_END
1645
1646 template <typename T>
1647 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1648 assert(value != NULL, "sanity");
1649 if (method == NULL || name == NULL) {
1650 return false;
1651 }
1652 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1653 CHECK_JNI_EXCEPTION_(env, false);
1654 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1655 // can't be in VM when we call JNI
1656 ThreadToNativeFromVM ttnfv(thread);
1657 const char* flag_name = env->GetStringUTFChars(name, NULL);
1658 CHECK_JNI_EXCEPTION_(env, false);
1659 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1660 env->ReleaseStringUTFChars(name, flag_name);
1661 return result;
1662 }
1663
1664 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1665 bool result;
1666 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1667 // can't be in VM when we call JNI
1668 ThreadToNativeFromVM ttnfv(thread);
1669 return booleanBox(thread, env, result);
1670 }
1671 return NULL;
1672 WB_END
1673
1674 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1675 intx result;
1676 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1677 // can't be in VM when we call JNI
1678 ThreadToNativeFromVM ttnfv(thread);
1679 return longBox(thread, env, result);
1680 }
1681 return NULL;
1682 WB_END
1683
1684 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1685 uintx result;
1686 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1687 // can't be in VM when we call JNI
1688 ThreadToNativeFromVM ttnfv(thread);
1689 return longBox(thread, env, result);
1690 }
1691 return NULL;
1692 WB_END
1693
1694 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1695 double result;
1696 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1697 // can't be in VM when we call JNI
1698 ThreadToNativeFromVM ttnfv(thread);
1699 return doubleBox(thread, env, result);
1700 }
1701 return NULL;
1702 WB_END
1703
1704 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1705 ccstr ccstrResult;
1706 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1707 // can't be in VM when we call JNI
1708 ThreadToNativeFromVM ttnfv(thread);
1709 jstring result = env->NewStringUTF(ccstrResult);
1710 CHECK_JNI_EXCEPTION_(env, NULL);
1711 return result;
1712 }
1713 return NULL;
1714 WB_END
1715
1716 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1717 oop obj_oop = JNIHandles::resolve(obj);
1718 return MetaspaceShared::is_archive_object(obj_oop);
1719 WB_END
1720
1721 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1722 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1723 WB_END
1724
1725 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1726 return !StringTable::shared_string_mapped();
1727 WB_END
1728
1729 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1730 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1731 if (k->is_instance_klass()) {
1732 InstanceKlass *ik = InstanceKlass::cast(k);
1733 ConstantPool *cp = ik->constants();
1734 objArrayOop refs = cp->resolved_references();
1735 return (jobject)JNIHandles::make_local(env, refs);
1736 } else {
1737 return NULL;
1738 }
1739 WB_END
1740
1741 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1742 return MetaspaceShared::open_archive_heap_region_mapped();
1743 WB_END
1744
1745 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1746 #if INCLUDE_CDS
1747 # ifdef _LP64
1748 if (!UseCompressedOops || !UseCompressedClassPointers) {
1749 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1750 return false;
1751 }
1752 # endif // _LP64
1753 return true;
1754 #else
1755 return false;
1756 #endif // INCLUDE_CDS
1757 WB_END
1758
1759 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1760 return MetaspaceShared::is_heap_object_archiving_allowed();
1761 WB_END
1762
1763
1764 #if INCLUDE_CDS
1765
1766 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1767 ResourceMark rm;
1768 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1769 int result = CDSOffsets::find_offset(c_name);
1770 return (jint)result;
1771 WB_END
1772
1773 #endif // INCLUDE_CDS
1774
1775 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1776 class TraceSelfClosure : public ThreadClosure {
1777 jint _num_threads_completed;
1778
1779 void do_thread(Thread* th) {
1780 assert(th->is_Java_thread(), "sanity");
1781 JavaThread* jt = (JavaThread*)th;
1782 ResourceMark rm;
1783
1784 jt->print_on(tty);
1785 jt->print_stack_on(tty);
1786 tty->cr();
1787 Atomic::inc(&_num_threads_completed);
1788 }
1789
1790 public:
1791 TraceSelfClosure() : _num_threads_completed(0) {}
1792
1793 jint num_threads_completed() const { return _num_threads_completed; }
1794 };
1795 TraceSelfClosure tsc;
1796
1797 if (all_threads) {
1798 Handshake::execute(&tsc);
1799 } else {
1800 oop thread_oop = JNIHandles::resolve(thread_handle);
1801 if (thread_oop != NULL) {
1802 JavaThread* target = java_lang_Thread::thread(thread_oop);
1803 Handshake::execute(&tsc, target);
1804 }
1805 }
1806 return tsc.num_threads_completed();
1807 WB_END
1808
1809 //Some convenience methods to deal with objects from java
1810 int WhiteBox::offset_for_field(const char* field_name, oop object,
1811 Symbol* signature_symbol) {
1812 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1813 Thread* THREAD = Thread::current();
1814
1815 //Get the class of our object
1816 Klass* arg_klass = object->klass();
1817 //Turn it into an instance-klass
1818 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1819
1820 //Create symbols to look for in the class
1821 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1822 THREAD);
1823
1824 //To be filled in with an offset of the field we're looking for
1825 fieldDescriptor fd;
1826
1827 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1828 if (res == NULL) {
1829 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1830 name_symbol->as_C_string());
1831 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1832 }
1833
1834 //fetch the field at the offset we've found
1835 int dest_offset = fd.offset();
1836
1837 return dest_offset;
1838 }
1839
1840
1841 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1842 int offset = offset_for_field(field_name, object,
1843 vmSymbols::string_signature());
1844 oop string = object->obj_field(offset);
1845 if (string == NULL) {
1846 return NULL;
1847 }
1848 const char* ret = java_lang_String::as_utf8_string(string);
1849 return ret;
1850 }
1851
1852 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1853 int offset =
1854 offset_for_field(field_name, object, vmSymbols::bool_signature());
1855 bool ret = (object->bool_field(offset) == JNI_TRUE);
1856 return ret;
1857 }
1858
1859 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1860 ResourceMark rm;
1861 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1862
1863 // one by one registration natives for exception catching
1864 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1865 CHECK_JNI_EXCEPTION(env);
1866 for (int i = 0, n = method_count; i < n; ++i) {
1867 // Skip dummy entries
1868 if (method_array[i].fnPtr == NULL) continue;
1869 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1870 jthrowable throwable_obj = env->ExceptionOccurred();
1871 if (throwable_obj != NULL) {
1872 env->ExceptionClear();
1873 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1874 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1875 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1876 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1877 method_array[i].name, method_array[i].signature);
1878 }
1879 } else {
1880 // Registration failed unexpectedly.
1881 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1882 method_array[i].name, method_array[i].signature);
1883 env->UnregisterNatives(wbclass);
1884 break;
1885 }
1886 }
1887 }
1888 }
1889
1890 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1891 // can't be in VM when we call JNI
1892 ThreadToNativeFromVM ttnfv(thread);
1893 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1894 CHECK_JNI_EXCEPTION_(env, 0);
1895 int ret;
1896 {
1897 ThreadInVMfromNative ttvfn(thread); // back to VM
1898 ret = DirectivesParser::parse_string(dir, tty);
1899 }
1900 env->ReleaseStringUTFChars(compDirect, dir);
1901 // -1 for error parsing directive. Return 0 as number of directives added.
1902 if (ret == -1) {
1903 ret = 0;
1904 }
1905 return (jint) ret;
1906 WB_END
1907
1908 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1909 DirectivesStack::pop(count);
1910 WB_END
1911
1912 // Checks that the library libfile has the noexecstack bit set.
1913 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1914 jboolean ret = false;
1915 #ifdef LINUX
1916 // Can't be in VM when we call JNI.
1917 ThreadToNativeFromVM ttnfv(thread);
1918 const char* lf = env->GetStringUTFChars(libfile, NULL);
1919 CHECK_JNI_EXCEPTION_(env, 0);
1920 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1921 env->ReleaseStringUTFChars(libfile, lf);
1922 #endif
1923 return ret;
1924 WB_END
1925
1926 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1927 LINUX_ONLY(return OSContainer::is_containerized();)
1928 return false;
1929 WB_END
1930
1931 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1932 os::print_os_info(tty);
1933 WB_END
1934
1935 // Elf decoder
1936 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1937 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1938 ElfFile::_do_not_cache_elf_section = true;
1939 #endif
1940 WB_END
1941
1942
1943 #define CC (char*)
1944
1945 static JNINativeMethod methods[] = {
1946 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1947 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1948 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1949 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1950 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1951 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1952 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1953 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1954 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1955 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1956 {CC"parseCommandLine0",
1957 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1958 (void*) &WB_ParseCommandLine
1959 },
1960 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1961 (void*)&WB_AddToBootstrapClassLoaderSearch},
1962 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1963 (void*)&WB_AddToSystemClassLoaderSearch},
1964 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1965 (void*)&WB_GetCompressedOopsMaxHeapSize},
1966 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1967 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1968 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1969 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1970 #if INCLUDE_CDS
1971 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1972 #endif
1973 #if INCLUDE_G1GC
1974 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1975 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1976 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1977 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1978 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1979 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1980 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1981 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1982 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1983 (void*)&WB_G1AuxiliaryMemoryUsage },
1984 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1985 #endif // INCLUDE_G1GC
1986 #if INCLUDE_PARALLELGC
1987 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1988 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1989 #endif
1990 #if INCLUDE_NMT
1991 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1992 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1993 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1994 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1995 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
1996 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1997 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1998 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1999 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2000 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2001 #endif // INCLUDE_NMT
2002 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2003 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2004 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2005 (void*)&WB_DeoptimizeMethod },
2006 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2007 (void*)&WB_IsMethodCompiled },
2008 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2009 (void*)&WB_IsMethodCompilable},
2010 {CC"isMethodQueuedForCompilation0",
2011 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2012 {CC"isIntrinsicAvailable0",
2013 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2014 (void*)&WB_IsIntrinsicAvailable},
2015 {CC"makeMethodNotCompilable0",
2016 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2017 {CC"testSetDontInlineMethod0",
2018 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2019 {CC"getMethodCompilationLevel0",
2020 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2021 {CC"getMethodEntryBci0",
2022 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2023 {CC"getCompileQueueSize",
2024 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2025 {CC"testSetForceInlineMethod0",
2026 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2027 {CC"enqueueMethodForCompilation0",
2028 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2029 {CC"enqueueInitializerForCompilation0",
2030 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2031 {CC"clearMethodState0",
2032 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2033 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2034 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2035 {CC"matchesMethod",
2036 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2037 (void*)&WB_MatchesMethod},
2038 {CC"matchesInline",
2039 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2040 (void*)&WB_MatchesInline},
2041 {CC"shouldPrintAssembly",
2042 CC"(Ljava/lang/reflect/Executable;I)Z",
2043 (void*)&WB_ShouldPrintAssembly},
2044
2045 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2046 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2047 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2048 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2049 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2050 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2051 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2052 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2053 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2054 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2055 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2056 (void*)&WB_SetStringVMFlag},
2057 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2058 (void*)&WB_GetBooleanVMFlag},
2059 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2060 (void*)&WB_GetIntVMFlag},
2061 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2062 (void*)&WB_GetUintVMFlag},
2063 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2064 (void*)&WB_GetIntxVMFlag},
2065 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2066 (void*)&WB_GetUintxVMFlag},
2067 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2068 (void*)&WB_GetUint64VMFlag},
2069 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2070 (void*)&WB_GetSizeTVMFlag},
2071 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2072 (void*)&WB_GetDoubleVMFlag},
2073 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2074 (void*)&WB_GetStringVMFlag},
2075 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2076 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2077 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2078 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2079 {CC"allocateMetaspace",
2080 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2081 {CC"freeMetaspace",
2082 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2083 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2084 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2085 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2086 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2087 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2088 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2089 (void*)&WB_GetNMethod },
2090 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2091 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2092 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2093 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2094 {CC"getCompilationActivityMode",
2095 CC"()I", (void*)&WB_GetCompilationActivityMode},
2096 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2097 (void*)&WB_GetMethodData },
2098 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2099 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2100 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2101 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2102 (void*)&WB_DefineModule },
2103 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2104 (void*)&WB_AddModuleExports },
2105 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2106 (void*)&WB_AddReadsModule },
2107 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2108 (void*)&WB_AddModuleExportsToAllUnnamed },
2109 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2110 (void*)&WB_AddModuleExportsToAll },
2111 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2112 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2113 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2114 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2115 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2116 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2117 {CC"remapInstructionOperandFromCPCache0",
2118 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2119 {CC"encodeConstantPoolIndyIndex0",
2120 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2121 {CC"getMethodBooleanOption",
2122 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2123 (void*)&WB_GetMethodBooleaneOption},
2124 {CC"getMethodIntxOption",
2125 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2126 (void*)&WB_GetMethodIntxOption},
2127 {CC"getMethodUintxOption",
2128 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2129 (void*)&WB_GetMethodUintxOption},
2130 {CC"getMethodDoubleOption",
2131 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2132 (void*)&WB_GetMethodDoubleOption},
2133 {CC"getMethodStringOption",
2134 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2135 (void*)&WB_GetMethodStringOption},
2136 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2137 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2138 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2139 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2140 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2141 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2142 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2143
2144 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2145 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2146 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2147 (void*)&WB_AddCompilerDirective },
2148 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2149 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2150 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2151 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2152 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2153 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2154 (void*)&WB_GetConcurrentGCPhases},
2155 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2156 (void*)&WB_RequestConcurrentGCPhase},
2157 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2158 (void*)&WB_CheckLibSpecifiesNoexecstack},
2159 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2160 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2161 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2162 };
2163
2164
2165 #undef CC
2166
2167 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2168 {
2169 if (WhiteBoxAPI) {
2170 // Make sure that wbclass is loaded by the null classloader
2171 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2172 Handle loader(THREAD, ik->class_loader());
2173 if (loader.is_null()) {
2174 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2175 WhiteBox::set_used();
2176 }
2177 }
2178 }
2179 JVM_END