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
351 #if INCLUDE_ZGC
352 if (UseZGC) {
353 return Universe::heap()->is_in(p);
354 }
355 #endif
356 GenCollectedHeap* gch = GenCollectedHeap::heap();
357 return !gch->is_in_young(p);
358 WB_END
359
360 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
361 oop p = JNIHandles::resolve(obj);
362 return p->size() * HeapWordSize;
363 WB_END
364
365 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
366 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
367 return (jlong)alignment;
368 WB_END
369
370 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
371 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
372 return (jlong)alignment;
373 WB_END
374
375 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
376 return Universe::heap()->supports_concurrent_phase_control();
377 WB_END
378
379 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
380 const char* const* phases = Universe::heap()->concurrent_phases();
381 jint nphases = 0;
382 for ( ; phases[nphases] != NULL; ++nphases) ;
383
384 ResourceMark rm(thread);
385 ThreadToNativeFromVM ttn(thread);
386 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
387 CHECK_JNI_EXCEPTION_(env, NULL);
388
389 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
390 CHECK_JNI_EXCEPTION_(env, NULL);
391
392 // If push fails, return with pending exception.
393 if (env->PushLocalFrame(nphases) < 0) return NULL;
394 for (jint i = 0; i < nphases; ++i) {
395 jstring phase = env->NewStringUTF(phases[i]);
396 CHECK_JNI_EXCEPTION_(env, NULL);
397 env->SetObjectArrayElement(result, i, phase);
398 CHECK_JNI_EXCEPTION_(env, NULL);
399 }
400 env->PopLocalFrame(NULL);
401
402 return result;
403 WB_END
404
405 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
406 Handle h_name(THREAD, JNIHandles::resolve(name));
407 ResourceMark rm;
408 const char* c_name = java_lang_String::as_utf8_string(h_name());
409 return Universe::heap()->request_concurrent_phase(c_name);
410 WB_END
411
412 #if INCLUDE_G1GC
413
414 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
415 if (UseG1GC) {
416 G1CollectedHeap* g1h = G1CollectedHeap::heap();
417 oop result = JNIHandles::resolve(obj);
418 const HeapRegion* hr = g1h->heap_region_containing(result);
419 return hr->is_humongous();
420 }
421 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
422 WB_END
423
424 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
425 if (UseG1GC) {
426 G1CollectedHeap* g1h = G1CollectedHeap::heap();
427 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
428 return hr->is_humongous();
429 }
430 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
431 WB_END
432
433 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
434 if (UseG1GC) {
435 G1CollectedHeap* g1h = G1CollectedHeap::heap();
436 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
437 return hr->is_free();
438 }
439 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
440 WB_END
441
442 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
443 if (UseG1GC) {
444 G1CollectedHeap* g1h = G1CollectedHeap::heap();
445 size_t nr = g1h->max_regions();
446 return (jlong)nr;
447 }
448 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
449 WB_END
450
451 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
452 if (UseG1GC) {
453 G1CollectedHeap* g1h = G1CollectedHeap::heap();
454 size_t nr = g1h->num_free_regions();
455 return (jlong)nr;
456 }
457 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
458 WB_END
459
460 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
461 if (UseG1GC) {
462 G1CollectedHeap* g1h = G1CollectedHeap::heap();
463 return g1h->concurrent_mark()->cm_thread()->during_cycle();
464 }
465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
466 WB_END
467
468 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
469 if (UseG1GC) {
470 G1CollectedHeap* g1h = G1CollectedHeap::heap();
471 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
472 g1h->collect(GCCause::_wb_conc_mark);
473 return true;
474 }
475 return false;
476 }
477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
478 WB_END
479
480 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
481 if (UseG1GC) {
482 return (jint)HeapRegion::GrainBytes;
483 }
484 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
485 WB_END
486
487 #endif // INCLUDE_G1GC
488
489 #if INCLUDE_PARALLELGC
490
491 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
492 if (UseParallelGC) {
493 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
494 }
495 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
496 WB_END
497
498 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
499 if (UseParallelGC) {
500 return ParallelScavengeHeap::heap()->generation_alignment();
501 }
502 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
503 WB_END
504
505 #endif // INCLUDE_PARALLELGC
506
507 #if INCLUDE_G1GC
508
509 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
510 if (UseG1GC) {
511 ResourceMark rm(THREAD);
512 G1CollectedHeap* g1h = G1CollectedHeap::heap();
513 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
514 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
515 return JNIHandles::make_local(env, h());
516 }
517 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
518 WB_END
519
520 class OldRegionsLivenessClosure: public HeapRegionClosure {
521
522 private:
523 const int _liveness;
524 size_t _total_count;
525 size_t _total_memory;
526 size_t _total_memory_to_free;
527
528 public:
529 OldRegionsLivenessClosure(int liveness) :
530 _liveness(liveness),
531 _total_count(0),
532 _total_memory(0),
533 _total_memory_to_free(0) { }
534
535 size_t total_count() { return _total_count; }
536 size_t total_memory() { return _total_memory; }
537 size_t total_memory_to_free() { return _total_memory_to_free; }
538
539 bool do_heap_region(HeapRegion* r) {
540 if (r->is_old()) {
541 size_t prev_live = r->marked_bytes();
542 size_t live = r->live_bytes();
543 size_t size = r->used();
544 size_t reg_size = HeapRegion::GrainBytes;
545 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
546 _total_memory += size;
547 ++_total_count;
548 if (size == reg_size) {
549 // we don't include non-full regions since they are unlikely included in mixed gc
550 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
551 _total_memory_to_free += size - prev_live;
552 }
553 }
554 }
555 return false;
556 }
557 };
558
559
560 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
561 if (!UseG1GC) {
562 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
563 }
564 if (liveness < 0) {
565 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
566 }
567
568 G1CollectedHeap* g1h = G1CollectedHeap::heap();
569 OldRegionsLivenessClosure rli(liveness);
570 g1h->heap_region_iterate(&rli);
571
572 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
573 result->long_at_put(0, rli.total_count());
574 result->long_at_put(1, rli.total_memory());
575 result->long_at_put(2, rli.total_memory_to_free());
576 return (jlongArray) JNIHandles::make_local(env, result);
577 WB_END
578
579 #endif // INCLUDE_G1GC
580
581 #if INCLUDE_NMT
582 // Alloc memory using the test memory type so that we can use that to see if
583 // NMT picks it up correctly
584 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
585 jlong addr = 0;
586 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
587 return addr;
588 WB_END
589
590 // Alloc memory with pseudo call stack. The test can create psudo malloc
591 // allocation site to stress the malloc tracking.
592 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
593 address pc = (address)(size_t)pseudo_stack;
594 NativeCallStack stack(&pc, 1);
595 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
596 WB_END
597
598 // Free the memory allocated by NMTAllocTest
599 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
600 os::free((void*)(uintptr_t)mem);
601 WB_END
602
603 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
604 jlong addr = 0;
605
606 addr = (jlong)(uintptr_t)os::reserve_memory(size);
607 MemTracker::record_virtual_memory_type((address)addr, mtTest);
608
609 return addr;
610 WB_END
611
612 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
613 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
614 MemTracker::record_virtual_memory_type((address)addr, mtTest);
615
616 return addr;
617 WB_END
618
619 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
620 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
621 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
622 WB_END
623
624 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
625 os::uncommit_memory((char *)(uintptr_t)addr, size);
626 WB_END
627
628 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
629 os::release_memory((char *)(uintptr_t)addr, size);
630 WB_END
631
632 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
633 // Test that we can downgrade NMT levels but not upgrade them.
634 if (MemTracker::tracking_level() == NMT_off) {
635 MemTracker::transition_to(NMT_off);
636 return MemTracker::tracking_level() == NMT_off;
637 } else {
638 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
639 MemTracker::transition_to(NMT_summary);
640 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
641
642 // Can't go to detail once NMT is set to summary.
643 MemTracker::transition_to(NMT_detail);
644 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
645
646 // Shutdown sets tracking level to minimal.
647 MemTracker::shutdown();
648 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
649
650 // Once the tracking level is minimal, we cannot increase to summary.
651 // The code ignores this request instead of asserting because if the malloc site
652 // table overflows in another thread, it tries to change the code to summary.
653 MemTracker::transition_to(NMT_summary);
654 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
655
656 // Really can never go up to detail, verify that the code would never do this.
657 MemTracker::transition_to(NMT_detail);
658 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
659 return MemTracker::tracking_level() == NMT_minimal;
660 }
661 WB_END
662
663 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
664 int hash_size = MallocSiteTable::hash_buckets();
665 assert(hash_size > 0, "NMT hash_size should be > 0");
666 return (jint)hash_size;
667 WB_END
668 #endif // INCLUDE_NMT
669
670 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
671 assert(method != NULL, "method should not be null");
672 ThreadToNativeFromVM ttn(thread);
673 return env->FromReflectedMethod(method);
674 }
675
676 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
677 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
678 private:
679 int _result;
680 const bool _make_not_entrant;
681 public:
682 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
683 _result(0), _make_not_entrant(make_not_entrant) { }
684 int result() const { return _result; }
685
686 void doit() {
687 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
688 if (t->has_last_Java_frame()) {
689 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
690 frame* f = fst.current();
691 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
692 RegisterMap* reg_map = fst.register_map();
693 Deoptimization::deoptimize(t, *f, reg_map);
694 if (_make_not_entrant) {
695 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
696 assert(cm != NULL, "sanity check");
697 cm->make_not_entrant();
698 }
699 ++_result;
700 }
701 }
702 }
703 }
704 }
705 };
706
707 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
708 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
709 VMThread::execute(&op);
710 return op.result();
711 WB_END
712
713 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
714 MutexLockerEx mu(Compile_lock);
715 CodeCache::mark_all_nmethods_for_deoptimization();
716 VM_Deoptimize op;
717 VMThread::execute(&op);
718 WB_END
719
720 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
721 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
722 int result = 0;
723 CHECK_JNI_EXCEPTION_(env, result);
724 MutexLockerEx mu(Compile_lock);
725 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
726 if (is_osr) {
727 result += mh->mark_osr_nmethods();
728 } else if (mh->code() != NULL) {
729 mh->code()->mark_for_deoptimization();
730 ++result;
731 }
732 result += CodeCache::mark_for_deoptimization(mh());
733 if (result > 0) {
734 VM_Deoptimize op;
735 VMThread::execute(&op);
736 }
737 return result;
738 WB_END
739
740 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
741 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
742 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
743 MutexLockerEx mu(Compile_lock);
744 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
745 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
746 if (code == NULL) {
747 return JNI_FALSE;
748 }
749 return (code->is_alive() && !code->is_marked_for_deoptimization());
750 WB_END
751
752 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
753 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
754 return false;
755 }
756 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
757 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
758 MutexLockerEx mu(Compile_lock);
759 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
760 if (is_osr) {
761 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
762 } else {
763 return CompilationPolicy::can_be_compiled(mh, comp_level);
764 }
765 WB_END
766
767 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
768 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
769 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
770 MutexLockerEx mu(Compile_lock);
771 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
772 return mh->queued_for_compilation();
773 WB_END
774
775 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
776 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
777 return false; // Intrinsic is not available on a non-existent compilation level.
778 }
779 jmethodID method_id, compilation_context_id;
780 method_id = reflected_method_to_jmid(thread, env, method);
781 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
782 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
783
784 DirectiveSet* directive;
785 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
786 assert(comp != NULL, "compiler not available");
787 if (compilation_context != NULL) {
788 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
789 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
790 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
791 directive = DirectivesStack::getMatchingDirective(cch, comp);
792 } else {
793 // Calling with NULL matches default directive
794 directive = DirectivesStack::getDefaultDirective(comp);
795 }
796 bool result = comp->is_intrinsic_available(mh, directive);
797 DirectivesStack::release(directive);
798 return result;
799 WB_END
800
801 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
802 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
803 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
804 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
805 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
806 return (code != NULL ? code->comp_level() : CompLevel_none);
807 WB_END
808
809 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
810 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
811 CHECK_JNI_EXCEPTION(env);
812 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
813 if (is_osr) {
814 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
815 } else {
816 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
817 }
818 WB_END
819
820 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
821 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
822 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
823 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
824 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
825 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
826 WB_END
827
828 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
829 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
830 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
831 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
832 bool result = mh->dont_inline();
833 mh->set_dont_inline(value == JNI_TRUE);
834 return result;
835 WB_END
836
837 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
838 if (comp_level == CompLevel_any) {
839 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
840 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
841 } else {
842 return CompileBroker::queue_size(comp_level);
843 }
844 WB_END
845
846 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
847 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
848 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
849 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
850 bool result = mh->force_inline();
851 mh->set_force_inline(value == JNI_TRUE);
852 return result;
853 WB_END
854
855 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
856 // Screen for unavailable/bad comp level or null method
857 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
858 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) {
859 return false;
860 }
861
862 // Check if compilation is blocking
863 methodHandle mh(THREAD, method);
864 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
865 bool is_blocking = !directive->BackgroundCompilationOption;
866 DirectivesStack::release(directive);
867
868 // Compile method and check result
869 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
870 MutexLockerEx mu(Compile_lock);
871 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL);
872 }
873
874 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
875 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
876 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
877 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
878 WB_END
879
880 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
881 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
882 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
883 WB_END
884
885 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
886 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
887 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
888
889 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
890 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
891 bool result = directive->PrintAssemblyOption;
892 DirectivesStack::release(directive);
893
894 return result;
895 WB_END
896
897 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
898 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
899 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
900
901 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
902
903 ResourceMark rm;
904 const char* error_msg = NULL;
905 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
906 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
907
908 if (m == NULL) {
909 assert(error_msg != NULL, "Always have an error message");
910 tty->print_cr("Got error: %s", error_msg);
911 return -1; // Pattern failed
912 }
913
914 // Pattern works - now check if it matches
915 int result;
916 if (m->match(mh, InlineMatcher::force_inline)) {
917 result = 2; // Force inline match
918 } else if (m->match(mh, InlineMatcher::dont_inline)) {
919 result = 1; // Dont inline match
920 } else {
921 result = 0; // No match
922 }
923 delete m;
924 return result;
925 WB_END
926
927 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
928 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
929 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
930
931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
932
933 ResourceMark rm;
934 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
935
936 const char* error_msg = NULL;
937
938 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
939 if (m == NULL) {
940 assert(error_msg != NULL, "Must have error_msg");
941 tty->print_cr("Got error: %s", error_msg);
942 return -1;
943 }
944
945 // Pattern works - now check if it matches
946 int result = m->matches(mh);
947 delete m;
948 assert(result == 0 || result == 1, "Result out of range");
949 return result;
950 WB_END
951
952 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
953 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
954 CHECK_JNI_EXCEPTION(env);
955 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
956 MutexLockerEx mu(Compile_lock);
957 MethodData* mdo = mh->method_data();
958 MethodCounters* mcs = mh->method_counters();
959
960 if (mdo != NULL) {
961 mdo->init();
962 ResourceMark rm;
963 int arg_count = mdo->method()->size_of_parameters();
964 for (int i = 0; i < arg_count; i++) {
965 mdo->set_arg_modified(i, 0);
966 }
967 MutexLockerEx mu(mdo->extra_data_lock());
968 mdo->clean_method_data(/*always_clean*/true);
969 }
970
971 mh->clear_not_c1_compilable();
972 mh->clear_not_c2_compilable();
973 mh->clear_not_c2_osr_compilable();
974 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
975 if (mcs != NULL) {
976 mcs->backedge_counter()->init();
977 mcs->invocation_counter()->init();
978 mcs->set_interpreter_invocation_count(0);
979 mcs->set_interpreter_throwout_count(0);
980
981 #ifdef TIERED
982 mcs->set_rate(0.0F);
983 mh->set_prev_event_count(0);
984 mh->set_prev_time(0);
985 #endif
986 }
987 WB_END
988
989 template <typename T>
990 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
991 if (name == NULL) {
992 return false;
993 }
994 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
995 const char* flag_name = env->GetStringUTFChars(name, NULL);
996 CHECK_JNI_EXCEPTION_(env, false);
997 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
998 env->ReleaseStringUTFChars(name, flag_name);
999 return (result == JVMFlag::SUCCESS);
1000 }
1001
1002 template <typename T>
1003 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1004 if (name == NULL) {
1005 return false;
1006 }
1007 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1008 const char* flag_name = env->GetStringUTFChars(name, NULL);
1009 CHECK_JNI_EXCEPTION_(env, false);
1010 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1011 env->ReleaseStringUTFChars(name, flag_name);
1012 return (result == JVMFlag::SUCCESS);
1013 }
1014
1015 template <typename T>
1016 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1017 ResourceMark rm(thread);
1018 jclass clazz = env->FindClass(name->as_C_string());
1019 CHECK_JNI_EXCEPTION_(env, NULL);
1020 jmethodID methodID = env->GetStaticMethodID(clazz,
1021 vmSymbols::valueOf_name()->as_C_string(),
1022 sig->as_C_string());
1023 CHECK_JNI_EXCEPTION_(env, NULL);
1024 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1025 CHECK_JNI_EXCEPTION_(env, NULL);
1026 return result;
1027 }
1028
1029 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1030 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1031 }
1032 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1033 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1034 }
1035 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1036 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1037 }
1038 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1039 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1040 }*/
1041 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1042 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1043 }
1044
1045 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1046 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1047 const char* flag_name = env->GetStringUTFChars(name, NULL);
1048 CHECK_JNI_EXCEPTION_(env, NULL);
1049 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1050 env->ReleaseStringUTFChars(name, flag_name);
1051 return result;
1052 }
1053
1054 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1055 JVMFlag* flag = getVMFlag(thread, env, name);
1056 return (flag != NULL) && flag->is_constant_in_binary();
1057 WB_END
1058
1059 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1060 JVMFlag* flag = getVMFlag(thread, env, name);
1061 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1062 WB_END
1063
1064 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1065 bool result;
1066 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1067 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1068 return booleanBox(thread, env, result);
1069 }
1070 return NULL;
1071 WB_END
1072
1073 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1074 int result;
1075 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1076 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1077 return longBox(thread, env, result);
1078 }
1079 return NULL;
1080 WB_END
1081
1082 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1083 uint result;
1084 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1085 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1086 return longBox(thread, env, result);
1087 }
1088 return NULL;
1089 WB_END
1090
1091 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1092 intx result;
1093 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1094 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1095 return longBox(thread, env, result);
1096 }
1097 return NULL;
1098 WB_END
1099
1100 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1101 uintx result;
1102 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1103 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1104 return longBox(thread, env, result);
1105 }
1106 return NULL;
1107 WB_END
1108
1109 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1110 uint64_t result;
1111 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1112 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1113 return longBox(thread, env, result);
1114 }
1115 return NULL;
1116 WB_END
1117
1118 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1119 uintx result;
1120 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1121 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1122 return longBox(thread, env, result);
1123 }
1124 return NULL;
1125 WB_END
1126
1127 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1128 double result;
1129 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1130 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1131 return doubleBox(thread, env, result);
1132 }
1133 return NULL;
1134 WB_END
1135
1136 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1137 ccstr ccstrResult;
1138 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1139 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1140 jstring result = env->NewStringUTF(ccstrResult);
1141 CHECK_JNI_EXCEPTION_(env, NULL);
1142 return result;
1143 }
1144 return NULL;
1145 WB_END
1146
1147 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1148 bool result = value == JNI_TRUE ? true : false;
1149 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1150 WB_END
1151
1152 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1153 int result = value;
1154 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1155 WB_END
1156
1157 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1158 uint result = value;
1159 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1160 WB_END
1161
1162 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1163 intx result = value;
1164 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1165 WB_END
1166
1167 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1168 uintx result = value;
1169 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1170 WB_END
1171
1172 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1173 uint64_t result = value;
1174 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1175 WB_END
1176
1177 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1178 size_t result = value;
1179 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1180 WB_END
1181
1182 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1183 double result = value;
1184 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1185 WB_END
1186
1187 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1188 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1189 const char* ccstrValue;
1190 if (value == NULL) {
1191 ccstrValue = NULL;
1192 }
1193 else {
1194 ccstrValue = env->GetStringUTFChars(value, NULL);
1195 CHECK_JNI_EXCEPTION(env);
1196 }
1197 ccstr ccstrResult = ccstrValue;
1198 bool needFree;
1199 {
1200 ThreadInVMfromNative ttvfn(thread); // back to VM
1201 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1202 }
1203 if (value != NULL) {
1204 env->ReleaseStringUTFChars(value, ccstrValue);
1205 }
1206 if (needFree) {
1207 FREE_C_HEAP_ARRAY(char, ccstrResult);
1208 }
1209 WB_END
1210
1211 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1212 WhiteBox::compilation_locked = true;
1213 WB_END
1214
1215 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1216 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1217 WhiteBox::compilation_locked = false;
1218 mo.notify_all();
1219 WB_END
1220
1221 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1222 // Force a code cache sweep and block until it finished
1223 NMethodSweeper::force_sweep();
1224 WB_END
1225
1226 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1227 ResourceMark rm(THREAD);
1228 int len;
1229 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1230 return (StringTable::lookup(name, len) != NULL);
1231 WB_END
1232
1233 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1234 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1235 Universe::heap()->collect(GCCause::_wb_full_gc);
1236 #if INCLUDE_G1GC
1237 if (UseG1GC) {
1238 // Needs to be cleared explicitly for G1
1239 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1240 }
1241 #endif // INCLUDE_G1GC
1242 WB_END
1243
1244 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1245 Universe::heap()->collect(GCCause::_wb_young_gc);
1246 WB_END
1247
1248 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1249 // static+volatile in order to force the read to happen
1250 // (not be eliminated by the compiler)
1251 static char c;
1252 static volatile char* p;
1253
1254 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1255 if (p == NULL) {
1256 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1257 }
1258
1259 c = *p;
1260 WB_END
1261
1262 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1263 const char* features = VM_Version::features_string();
1264 ThreadToNativeFromVM ttn(thread);
1265 jstring features_string = env->NewStringUTF(features);
1266
1267 CHECK_JNI_EXCEPTION_(env, NULL);
1268
1269 return features_string;
1270 WB_END
1271
1272 int WhiteBox::get_blob_type(const CodeBlob* code) {
1273 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1274 if (code->is_aot()) {
1275 return -1;
1276 }
1277 return CodeCache::get_code_heap(code)->code_blob_type();
1278 }
1279
1280 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1281 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1282 return CodeCache::get_code_heap(blob_type);
1283 }
1284
1285 struct CodeBlobStub {
1286 CodeBlobStub(const CodeBlob* blob) :
1287 name(os::strdup(blob->name())),
1288 size(blob->size()),
1289 blob_type(WhiteBox::get_blob_type(blob)),
1290 address((jlong) blob) { }
1291 ~CodeBlobStub() { os::free((void*) name); }
1292 const char* const name;
1293 const jint size;
1294 const jint blob_type;
1295 const jlong address;
1296 };
1297
1298 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1299 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1300 CHECK_JNI_EXCEPTION_(env, NULL);
1301 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1302
1303 jstring name = env->NewStringUTF(cb->name);
1304 CHECK_JNI_EXCEPTION_(env, NULL);
1305 env->SetObjectArrayElement(result, 0, name);
1306
1307 jobject obj = integerBox(thread, env, cb->size);
1308 CHECK_JNI_EXCEPTION_(env, NULL);
1309 env->SetObjectArrayElement(result, 1, obj);
1310
1311 obj = integerBox(thread, env, cb->blob_type);
1312 CHECK_JNI_EXCEPTION_(env, NULL);
1313 env->SetObjectArrayElement(result, 2, obj);
1314
1315 obj = longBox(thread, env, cb->address);
1316 CHECK_JNI_EXCEPTION_(env, NULL);
1317 env->SetObjectArrayElement(result, 3, obj);
1318
1319 return result;
1320 }
1321
1322 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1323 ResourceMark rm(THREAD);
1324 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1325 CHECK_JNI_EXCEPTION_(env, NULL);
1326 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1327 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1328 jobjectArray result = NULL;
1329 if (code == NULL) {
1330 return result;
1331 }
1332 int comp_level = code->comp_level();
1333 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1334
1335 ThreadToNativeFromVM ttn(thread);
1336 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1337 CHECK_JNI_EXCEPTION_(env, NULL);
1338 result = env->NewObjectArray(5, clazz, NULL);
1339 if (result == NULL) {
1340 return result;
1341 }
1342
1343 CodeBlobStub stub(code);
1344 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1345 CHECK_JNI_EXCEPTION_(env, NULL);
1346 env->SetObjectArrayElement(result, 0, codeBlob);
1347
1348 jobject level = integerBox(thread, env, comp_level);
1349 CHECK_JNI_EXCEPTION_(env, NULL);
1350 env->SetObjectArrayElement(result, 1, level);
1351
1352 jbyteArray insts = env->NewByteArray(insts_size);
1353 CHECK_JNI_EXCEPTION_(env, NULL);
1354 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1355 env->SetObjectArrayElement(result, 2, insts);
1356
1357 jobject id = integerBox(thread, env, code->compile_id());
1358 CHECK_JNI_EXCEPTION_(env, NULL);
1359 env->SetObjectArrayElement(result, 3, id);
1360
1361 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1362 CHECK_JNI_EXCEPTION_(env, NULL);
1363 env->SetObjectArrayElement(result, 4, entry_point);
1364
1365 return result;
1366 WB_END
1367
1368 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1369 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1370 BufferBlob* blob;
1371 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1372 if (full_size < size) {
1373 full_size += align_up(size - full_size, oopSize);
1374 }
1375 {
1376 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1377 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1378 if (blob != NULL) {
1379 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1380 }
1381 }
1382 // Track memory usage statistic after releasing CodeCache_lock
1383 MemoryService::track_code_cache_memory_usage();
1384 return blob;
1385 }
1386
1387 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1388 if (size < 0) {
1389 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1390 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1391 }
1392 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1393 WB_END
1394
1395 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1396 if (addr == 0) {
1397 return;
1398 }
1399 BufferBlob::free((BufferBlob*) addr);
1400 WB_END
1401
1402 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1403 ResourceMark rm;
1404 GrowableArray<CodeBlobStub*> blobs;
1405 {
1406 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1407 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1408 if (heap == NULL) {
1409 return NULL;
1410 }
1411 for (CodeBlob* cb = (CodeBlob*) heap->first();
1412 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1413 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1414 new (stub) CodeBlobStub(cb);
1415 blobs.append(stub);
1416 }
1417 }
1418 if (blobs.length() == 0) {
1419 return NULL;
1420 }
1421 ThreadToNativeFromVM ttn(thread);
1422 jobjectArray result = NULL;
1423 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1424 CHECK_JNI_EXCEPTION_(env, NULL);
1425 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1426 CHECK_JNI_EXCEPTION_(env, NULL);
1427 if (result == NULL) {
1428 return result;
1429 }
1430 int i = 0;
1431 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1432 it != blobs.end(); ++it) {
1433 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1434 CHECK_JNI_EXCEPTION_(env, NULL);
1435 env->SetObjectArrayElement(result, i, obj);
1436 CHECK_JNI_EXCEPTION_(env, NULL);
1437 ++i;
1438 }
1439 return result;
1440 WB_END
1441
1442 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1443 return CompileBroker::get_compilation_activity_mode();
1444 WB_END
1445
1446 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1447 if (addr == 0) {
1448 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1449 "WB_GetCodeBlob: addr is null");
1450 }
1451 ThreadToNativeFromVM ttn(thread);
1452 CodeBlobStub stub((CodeBlob*) addr);
1453 return codeBlob2objectArray(thread, env, &stub);
1454 WB_END
1455
1456 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1457 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1458 CHECK_JNI_EXCEPTION_(env, 0);
1459 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1460 return (jlong) mh->method_data();
1461 WB_END
1462
1463 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1464 return (jlong) Thread::current()->stack_size();
1465 WB_END
1466
1467 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1468 JavaThread* t = JavaThread::current();
1469 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1470 WB_END
1471
1472
1473 int WhiteBox::array_bytes_to_length(size_t bytes) {
1474 return Array<u1>::bytes_to_length(bytes);
1475 }
1476
1477 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1478 if (size < 0) {
1479 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1480 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1481 }
1482
1483 oop class_loader_oop = JNIHandles::resolve(class_loader);
1484 ClassLoaderData* cld = class_loader_oop != NULL
1485 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1486 : ClassLoaderData::the_null_class_loader_data();
1487
1488 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1489
1490 return (jlong)(uintptr_t)metadata;
1491 WB_END
1492
1493 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1494 oop class_loader_oop = JNIHandles::resolve(class_loader);
1495 ClassLoaderData* cld = class_loader_oop != NULL
1496 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1497 : ClassLoaderData::the_null_class_loader_data();
1498
1499 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1500 WB_END
1501
1502 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1503 jstring version, jstring location, jobjectArray packages))
1504 ResourceMark rm(THREAD);
1505
1506 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1507 objArrayHandle packages_h(THREAD, packages_oop);
1508 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1509
1510 char** pkgs = NULL;
1511 if (num_packages > 0) {
1512 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1513 for (int x = 0; x < num_packages; x++) {
1514 oop pkg_str = packages_h->obj_at(x);
1515 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1516 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1517 err_msg("Bad package name"));
1518 }
1519 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1520 }
1521 }
1522 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1523 WB_END
1524
1525 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1526 ResourceMark rm(THREAD);
1527 char* package_name = NULL;
1528 if (package != NULL) {
1529 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1530 }
1531 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1532 WB_END
1533
1534 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1535 ResourceMark rm(THREAD);
1536 char* package_name = NULL;
1537 if (package != NULL) {
1538 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1539 }
1540 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1541 WB_END
1542
1543 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1544 ResourceMark rm(THREAD);
1545 char* package_name = NULL;
1546 if (package != NULL) {
1547 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1548 }
1549 Modules::add_module_exports(module, package_name, NULL, CHECK);
1550 WB_END
1551
1552 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1553 Modules::add_reads_module(from_module, source_module, CHECK);
1554 WB_END
1555
1556 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1557 if (inc < 0) {
1558 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1559 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1560 }
1561
1562 jlong max_size_t = (jlong) ((size_t) -1);
1563 if (inc > max_size_t) {
1564 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1565 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1566 }
1567
1568 size_t new_cap_until_GC = 0;
1569 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1570 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1571 if (!success) {
1572 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1573 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1574 "due to contention with another thread");
1575 }
1576 return (jlong) new_cap_until_GC;
1577 WB_END
1578
1579 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1580 return (jlong) MetaspaceGC::capacity_until_GC();
1581 WB_END
1582
1583 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1584 return MetaspaceGC::should_concurrent_collect();
1585 WB_END
1586
1587 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1588 return (jlong)Metaspace::reserve_alignment();
1589 WB_END
1590
1591 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1592 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1593 Monitor::_safepoint_check_always :
1594 Monitor::_safepoint_check_never;
1595 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1596 attemptedNoSafepointValue == JNI_TRUE);
1597 WB_END
1598
1599 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1600 oop obj_oop = JNIHandles::resolve(obj);
1601 return (jboolean) obj_oop->mark()->has_monitor();
1602 WB_END
1603
1604 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1605 VM_ForceSafepoint force_safepoint_op;
1606 VMThread::execute(&force_safepoint_op);
1607 WB_END
1608
1609 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1610 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1611 return (jlong) ik->constants();
1612 WB_END
1613
1614 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1615 return ConstantPool::CPCACHE_INDEX_TAG;
1616 WB_END
1617
1618 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1619 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1620 ConstantPool* cp = ik->constants();
1621 if (cp->cache() == NULL) {
1622 return -1;
1623 }
1624 return cp->cache()->length();
1625 WB_END
1626
1627 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1628 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1629 ConstantPool* cp = ik->constants();
1630 if (cp->cache() == NULL) {
1631 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1632 }
1633 jint cpci = index;
1634 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1635 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1636 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1637 }
1638 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1639 return cpi;
1640 WB_END
1641
1642 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1643 return ConstantPool::encode_invokedynamic_index(index);
1644 WB_END
1645
1646 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1647 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1648 VMThread::execute(&clear_ics);
1649 WB_END
1650
1651 template <typename T>
1652 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1653 assert(value != NULL, "sanity");
1654 if (method == NULL || name == NULL) {
1655 return false;
1656 }
1657 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1658 CHECK_JNI_EXCEPTION_(env, false);
1659 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1660 // can't be in VM when we call JNI
1661 ThreadToNativeFromVM ttnfv(thread);
1662 const char* flag_name = env->GetStringUTFChars(name, NULL);
1663 CHECK_JNI_EXCEPTION_(env, false);
1664 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1665 env->ReleaseStringUTFChars(name, flag_name);
1666 return result;
1667 }
1668
1669 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1670 bool result;
1671 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1672 // can't be in VM when we call JNI
1673 ThreadToNativeFromVM ttnfv(thread);
1674 return booleanBox(thread, env, result);
1675 }
1676 return NULL;
1677 WB_END
1678
1679 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1680 intx result;
1681 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1682 // can't be in VM when we call JNI
1683 ThreadToNativeFromVM ttnfv(thread);
1684 return longBox(thread, env, result);
1685 }
1686 return NULL;
1687 WB_END
1688
1689 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1690 uintx result;
1691 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1692 // can't be in VM when we call JNI
1693 ThreadToNativeFromVM ttnfv(thread);
1694 return longBox(thread, env, result);
1695 }
1696 return NULL;
1697 WB_END
1698
1699 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1700 double result;
1701 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1702 // can't be in VM when we call JNI
1703 ThreadToNativeFromVM ttnfv(thread);
1704 return doubleBox(thread, env, result);
1705 }
1706 return NULL;
1707 WB_END
1708
1709 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1710 ccstr ccstrResult;
1711 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1712 // can't be in VM when we call JNI
1713 ThreadToNativeFromVM ttnfv(thread);
1714 jstring result = env->NewStringUTF(ccstrResult);
1715 CHECK_JNI_EXCEPTION_(env, NULL);
1716 return result;
1717 }
1718 return NULL;
1719 WB_END
1720
1721 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1722 oop obj_oop = JNIHandles::resolve(obj);
1723 return MetaspaceShared::is_archive_object(obj_oop);
1724 WB_END
1725
1726 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1727 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1728 WB_END
1729
1730 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1731 return !StringTable::shared_string_mapped();
1732 WB_END
1733
1734 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1735 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1736 if (k->is_instance_klass()) {
1737 InstanceKlass *ik = InstanceKlass::cast(k);
1738 ConstantPool *cp = ik->constants();
1739 objArrayOop refs = cp->resolved_references();
1740 return (jobject)JNIHandles::make_local(env, refs);
1741 } else {
1742 return NULL;
1743 }
1744 WB_END
1745
1746 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1747 return MetaspaceShared::open_archive_heap_region_mapped();
1748 WB_END
1749
1750 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1751 #if INCLUDE_CDS
1752 # ifdef _LP64
1753 if (!UseCompressedOops || !UseCompressedClassPointers) {
1754 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1755 return false;
1756 }
1757 # endif // _LP64
1758 return true;
1759 #else
1760 return false;
1761 #endif // INCLUDE_CDS
1762 WB_END
1763
1764 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1765 return MetaspaceShared::is_heap_object_archiving_allowed();
1766 WB_END
1767
1768
1769 #if INCLUDE_CDS
1770
1771 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1772 ResourceMark rm;
1773 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1774 int result = CDSOffsets::find_offset(c_name);
1775 return (jint)result;
1776 WB_END
1777
1778 #endif // INCLUDE_CDS
1779
1780 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1781 class TraceSelfClosure : public ThreadClosure {
1782 jint _num_threads_completed;
1783
1784 void do_thread(Thread* th) {
1785 assert(th->is_Java_thread(), "sanity");
1786 JavaThread* jt = (JavaThread*)th;
1787 ResourceMark rm;
1788
1789 jt->print_on(tty);
1790 jt->print_stack_on(tty);
1791 tty->cr();
1792 Atomic::inc(&_num_threads_completed);
1793 }
1794
1795 public:
1796 TraceSelfClosure() : _num_threads_completed(0) {}
1797
1798 jint num_threads_completed() const { return _num_threads_completed; }
1799 };
1800 TraceSelfClosure tsc;
1801
1802 if (all_threads) {
1803 Handshake::execute(&tsc);
1804 } else {
1805 oop thread_oop = JNIHandles::resolve(thread_handle);
1806 if (thread_oop != NULL) {
1807 JavaThread* target = java_lang_Thread::thread(thread_oop);
1808 Handshake::execute(&tsc, target);
1809 }
1810 }
1811 return tsc.num_threads_completed();
1812 WB_END
1813
1814 //Some convenience methods to deal with objects from java
1815 int WhiteBox::offset_for_field(const char* field_name, oop object,
1816 Symbol* signature_symbol) {
1817 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1818 Thread* THREAD = Thread::current();
1819
1820 //Get the class of our object
1821 Klass* arg_klass = object->klass();
1822 //Turn it into an instance-klass
1823 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1824
1825 //Create symbols to look for in the class
1826 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1827 THREAD);
1828
1829 //To be filled in with an offset of the field we're looking for
1830 fieldDescriptor fd;
1831
1832 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1833 if (res == NULL) {
1834 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1835 name_symbol->as_C_string());
1836 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1837 }
1838
1839 //fetch the field at the offset we've found
1840 int dest_offset = fd.offset();
1841
1842 return dest_offset;
1843 }
1844
1845
1846 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1847 int offset = offset_for_field(field_name, object,
1848 vmSymbols::string_signature());
1849 oop string = object->obj_field(offset);
1850 if (string == NULL) {
1851 return NULL;
1852 }
1853 const char* ret = java_lang_String::as_utf8_string(string);
1854 return ret;
1855 }
1856
1857 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1858 int offset =
1859 offset_for_field(field_name, object, vmSymbols::bool_signature());
1860 bool ret = (object->bool_field(offset) == JNI_TRUE);
1861 return ret;
1862 }
1863
1864 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1865 ResourceMark rm;
1866 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1867
1868 // one by one registration natives for exception catching
1869 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1870 CHECK_JNI_EXCEPTION(env);
1871 for (int i = 0, n = method_count; i < n; ++i) {
1872 // Skip dummy entries
1873 if (method_array[i].fnPtr == NULL) continue;
1874 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1875 jthrowable throwable_obj = env->ExceptionOccurred();
1876 if (throwable_obj != NULL) {
1877 env->ExceptionClear();
1878 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1879 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1880 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1881 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1882 method_array[i].name, method_array[i].signature);
1883 }
1884 } else {
1885 // Registration failed unexpectedly.
1886 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1887 method_array[i].name, method_array[i].signature);
1888 env->UnregisterNatives(wbclass);
1889 break;
1890 }
1891 }
1892 }
1893 }
1894
1895 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1896 // can't be in VM when we call JNI
1897 ThreadToNativeFromVM ttnfv(thread);
1898 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1899 CHECK_JNI_EXCEPTION_(env, 0);
1900 int ret;
1901 {
1902 ThreadInVMfromNative ttvfn(thread); // back to VM
1903 ret = DirectivesParser::parse_string(dir, tty);
1904 }
1905 env->ReleaseStringUTFChars(compDirect, dir);
1906 // -1 for error parsing directive. Return 0 as number of directives added.
1907 if (ret == -1) {
1908 ret = 0;
1909 }
1910 return (jint) ret;
1911 WB_END
1912
1913 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1914 DirectivesStack::pop(count);
1915 WB_END
1916
1917 // Checks that the library libfile has the noexecstack bit set.
1918 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1919 jboolean ret = false;
1920 #ifdef LINUX
1921 // Can't be in VM when we call JNI.
1922 ThreadToNativeFromVM ttnfv(thread);
1923 const char* lf = env->GetStringUTFChars(libfile, NULL);
1924 CHECK_JNI_EXCEPTION_(env, 0);
1925 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1926 env->ReleaseStringUTFChars(libfile, lf);
1927 #endif
1928 return ret;
1929 WB_END
1930
1931 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1932 LINUX_ONLY(return OSContainer::is_containerized();)
1933 return false;
1934 WB_END
1935
1936 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1937 os::print_os_info(tty);
1938 WB_END
1939
1940 // Elf decoder
1941 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1942 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1943 ElfFile::_do_not_cache_elf_section = true;
1944 #endif
1945 WB_END
1946
1947
1948 #define CC (char*)
1949
1950 static JNINativeMethod methods[] = {
1951 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1952 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1953 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1954 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1955 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1956 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1957 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1958 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1959 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1960 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1961 {CC"parseCommandLine0",
1962 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1963 (void*) &WB_ParseCommandLine
1964 },
1965 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1966 (void*)&WB_AddToBootstrapClassLoaderSearch},
1967 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1968 (void*)&WB_AddToSystemClassLoaderSearch},
1969 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1970 (void*)&WB_GetCompressedOopsMaxHeapSize},
1971 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1972 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1973 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1974 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1975 #if INCLUDE_CDS
1976 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1977 #endif
1978 #if INCLUDE_G1GC
1979 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1980 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1981 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1982 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1983 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1984 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1985 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1986 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1987 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1988 (void*)&WB_G1AuxiliaryMemoryUsage },
1989 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1990 #endif // INCLUDE_G1GC
1991 #if INCLUDE_PARALLELGC
1992 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1993 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1994 #endif
1995 #if INCLUDE_NMT
1996 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1997 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1998 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1999 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2000 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2001 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2002 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2003 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2004 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2005 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2006 #endif // INCLUDE_NMT
2007 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2008 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2009 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2010 (void*)&WB_DeoptimizeMethod },
2011 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2012 (void*)&WB_IsMethodCompiled },
2013 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2014 (void*)&WB_IsMethodCompilable},
2015 {CC"isMethodQueuedForCompilation0",
2016 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2017 {CC"isIntrinsicAvailable0",
2018 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2019 (void*)&WB_IsIntrinsicAvailable},
2020 {CC"makeMethodNotCompilable0",
2021 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2022 {CC"testSetDontInlineMethod0",
2023 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2024 {CC"getMethodCompilationLevel0",
2025 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2026 {CC"getMethodEntryBci0",
2027 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2028 {CC"getCompileQueueSize",
2029 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2030 {CC"testSetForceInlineMethod0",
2031 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2032 {CC"enqueueMethodForCompilation0",
2033 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2034 {CC"enqueueInitializerForCompilation0",
2035 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2036 {CC"clearMethodState0",
2037 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2038 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2039 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2040 {CC"matchesMethod",
2041 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2042 (void*)&WB_MatchesMethod},
2043 {CC"matchesInline",
2044 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2045 (void*)&WB_MatchesInline},
2046 {CC"shouldPrintAssembly",
2047 CC"(Ljava/lang/reflect/Executable;I)Z",
2048 (void*)&WB_ShouldPrintAssembly},
2049
2050 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2051 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2052 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2053 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2054 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2055 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2056 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2057 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2058 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2059 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2060 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2061 (void*)&WB_SetStringVMFlag},
2062 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2063 (void*)&WB_GetBooleanVMFlag},
2064 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2065 (void*)&WB_GetIntVMFlag},
2066 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2067 (void*)&WB_GetUintVMFlag},
2068 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2069 (void*)&WB_GetIntxVMFlag},
2070 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2071 (void*)&WB_GetUintxVMFlag},
2072 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2073 (void*)&WB_GetUint64VMFlag},
2074 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2075 (void*)&WB_GetSizeTVMFlag},
2076 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2077 (void*)&WB_GetDoubleVMFlag},
2078 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2079 (void*)&WB_GetStringVMFlag},
2080 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2081 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2082 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2083 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2084 {CC"allocateMetaspace",
2085 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2086 {CC"freeMetaspace",
2087 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2088 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2089 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2090 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2091 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2092 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2093 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2094 (void*)&WB_GetNMethod },
2095 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2096 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2097 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2098 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2099 {CC"getCompilationActivityMode",
2100 CC"()I", (void*)&WB_GetCompilationActivityMode},
2101 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2102 (void*)&WB_GetMethodData },
2103 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2104 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2105 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2106 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2107 (void*)&WB_DefineModule },
2108 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2109 (void*)&WB_AddModuleExports },
2110 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2111 (void*)&WB_AddReadsModule },
2112 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2113 (void*)&WB_AddModuleExportsToAllUnnamed },
2114 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2115 (void*)&WB_AddModuleExportsToAll },
2116 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2117 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2118 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2119 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2120 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2121 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2122 {CC"remapInstructionOperandFromCPCache0",
2123 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2124 {CC"encodeConstantPoolIndyIndex0",
2125 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2126 {CC"getMethodBooleanOption",
2127 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2128 (void*)&WB_GetMethodBooleaneOption},
2129 {CC"getMethodIntxOption",
2130 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2131 (void*)&WB_GetMethodIntxOption},
2132 {CC"getMethodUintxOption",
2133 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2134 (void*)&WB_GetMethodUintxOption},
2135 {CC"getMethodDoubleOption",
2136 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2137 (void*)&WB_GetMethodDoubleOption},
2138 {CC"getMethodStringOption",
2139 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2140 (void*)&WB_GetMethodStringOption},
2141 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2142 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2143 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2144 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2145 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2146 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2147 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2148
2149 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2150 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2151 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2152 (void*)&WB_AddCompilerDirective },
2153 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2154 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2155 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2156 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2157 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2158 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2159 (void*)&WB_GetConcurrentGCPhases},
2160 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2161 (void*)&WB_RequestConcurrentGCPhase},
2162 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2163 (void*)&WB_CheckLibSpecifiesNoexecstack},
2164 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2165 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2166 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2167 };
2168
2169
2170 #undef CC
2171
2172 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2173 {
2174 if (WhiteBoxAPI) {
2175 // Make sure that wbclass is loaded by the null classloader
2176 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2177 Handle loader(THREAD, ik->class_loader());
2178 if (loader.is_null()) {
2179 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2180 WhiteBox::set_used();
2181 }
2182 }
2183 }
2184 JVM_END