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/fieldDescriptor.inline.hpp"
57 #include "runtime/flags/jvmFlag.hpp"
58 #include "runtime/frame.inline.hpp"
59 #include "runtime/handshake.hpp"
60 #include "runtime/interfaceSupport.inline.hpp"
61 #include "runtime/javaCalls.hpp"
62 #include "runtime/jniHandles.inline.hpp"
63 #include "runtime/os.hpp"
64 #include "runtime/sweeper.hpp"
65 #include "runtime/thread.hpp"
66 #include "runtime/threadSMR.hpp"
67 #include "runtime/vm_version.hpp"
68 #include "services/memoryService.hpp"
69 #include "utilities/align.hpp"
70 #include "utilities/debug.hpp"
71 #include "utilities/elfFile.hpp"
72 #include "utilities/exceptions.hpp"
73 #include "utilities/macros.hpp"
74 #if INCLUDE_CDS
75 #include "prims/cdsoffsets.hpp"
76 #endif // INCLUDE_CDS
77 #if INCLUDE_G1GC
78 #include "gc/g1/g1CollectedHeap.inline.hpp"
79 #include "gc/g1/g1ConcurrentMark.hpp"
80 #include "gc/g1/g1ConcurrentMarkThread.hpp"
81 #include "gc/g1/heapRegionRemSet.hpp"
82 #endif // INCLUDE_G1GC
83 #if INCLUDE_PARALLELGC
84 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
85 #include "gc/parallel/adjoiningGenerations.hpp"
86 #endif // INCLUDE_PARALLELGC
87 #if INCLUDE_NMT
88 #include "services/mallocSiteTable.hpp"
89 #include "services/memTracker.hpp"
90 #include "utilities/nativeCallStack.hpp"
91 #endif // INCLUDE_NMT
92
93 #ifdef LINUX
94 #include "osContainer_linux.hpp"
95 #endif
96
97 #define SIZE_T_MAX_VALUE ((size_t) -1)
98
99 #define CHECK_JNI_EXCEPTION_(env, value) \
100 do { \
101 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
102 THREAD->clear_pending_jni_exception_check(); \
103 if (HAS_PENDING_EXCEPTION) { \
104 return(value); \
105 } \
106 } while (0)
107
108 #define CHECK_JNI_EXCEPTION(env) \
109 do { \
110 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
111 THREAD->clear_pending_jni_exception_check(); \
112 if (HAS_PENDING_EXCEPTION) { \
113 return; \
114 } \
115 } while (0)
116
117 bool WhiteBox::_used = false;
118 volatile bool WhiteBox::compilation_locked = false;
119
120 class VM_WhiteBoxOperation : public VM_Operation {
121 public:
122 VM_WhiteBoxOperation() { }
123 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
124 bool allow_nested_vm_operations() const { return true; }
125 };
126
127
128 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
129 return (jlong)(void*)JNIHandles::resolve(obj);
130 WB_END
131
132 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
133 return heapOopSize;
134 WB_END
135
136 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
137 return os::vm_page_size();
138 WB_END
139
140 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
141 return os::vm_allocation_granularity();
142 WB_END
143
144 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
145 return os::large_page_size();
146 WB_END
147
148 class WBIsKlassAliveClosure : public KlassClosure {
149 Symbol* _name;
150 bool _found;
151 public:
152 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
153
154 void do_klass(Klass* k) {
155 if (_found) return;
156 Symbol* ksym = k->name();
157 if (ksym->fast_compare(_name) == 0) {
158 _found = true;
159 }
160 }
161
162 bool found() const {
163 return _found;
164 }
165 };
166
167 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
168 oop h_name = JNIHandles::resolve(name);
169 if (h_name == NULL) return false;
170 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
171 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
172
173 WBIsKlassAliveClosure closure(sym);
174 ClassLoaderDataGraph::classes_do(&closure);
175
176 return closure.found();
177 WB_END
178
179 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
180 #if INCLUDE_JVMTI
181 ResourceMark rm;
182 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
183 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
184 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
185 assert(err == JVMTI_ERROR_NONE, "must not fail");
186 #endif
187 }
188 WB_END
189
190 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
191 #if INCLUDE_JVMTI
192 ResourceMark rm;
193 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
194 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
195 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
196 assert(err == JVMTI_ERROR_NONE, "must not fail");
197 #endif
198 }
199 WB_END
200
201
202 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
203 return (jlong)Arguments::max_heap_for_compressed_oops();
204 }
205 WB_END
206
207 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
208 CollectorPolicy * p = Universe::heap()->collector_policy();
209 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
210 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
211 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
212 p->space_alignment(), p->heap_alignment());
213 }
214 WB_END
215
216 #ifndef PRODUCT
217 // Forward declaration
218 void TestReservedSpace_test();
219 void TestReserveMemorySpecial_test();
220 void TestVirtualSpace_test();
221 void TestMetaspaceUtils_test();
222 #endif
223
224 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
225 #ifndef PRODUCT
226 TestReservedSpace_test();
227 TestReserveMemorySpecial_test();
228 TestVirtualSpace_test();
229 TestMetaspaceUtils_test();
230 #endif
231 WB_END
232
233 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
234 size_t granularity = os::vm_allocation_granularity();
235 ReservedHeapSpace rhs(100 * granularity, granularity, false);
236 VirtualSpace vs;
237 vs.initialize(rhs, 50 * granularity);
238
239 // Check if constraints are complied
240 if (!( UseCompressedOops && rhs.base() != NULL &&
241 Universe::narrow_oop_base() != NULL &&
242 Universe::narrow_oop_use_implicit_null_checks() )) {
243 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
244 "\tUseCompressedOops is %d\n"
245 "\trhs.base() is " PTR_FORMAT "\n"
246 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
247 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
248 UseCompressedOops,
249 p2i(rhs.base()),
250 p2i(Universe::narrow_oop_base()),
251 Universe::narrow_oop_use_implicit_null_checks());
252 return;
253 }
254 tty->print_cr("Reading from no access area... ");
255 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
256 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
257 WB_END
258
259 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
260 size_t magnitude, size_t iterations) {
261 size_t granularity = os::vm_allocation_granularity();
262 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
263 VirtualSpace vs;
264 if (!vs.initialize(rhs, 0)) {
265 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
266 return 3;
267 }
268
269 int seed = os::random();
270 tty->print_cr("Random seed is %d", seed);
271 os::init_random(seed);
272
273 for (size_t i = 0; i < iterations; i++) {
274
275 // Whether we will shrink or grow
276 bool shrink = os::random() % 2L == 0;
277
278 // Get random delta to resize virtual space
279 size_t delta = (size_t)os::random() % magnitude;
280
281 // If we are about to shrink virtual space below zero, then expand instead
282 if (shrink && vs.committed_size() < delta) {
283 shrink = false;
284 }
285
286 // Resizing by delta
287 if (shrink) {
288 vs.shrink_by(delta);
289 } else {
290 // If expanding fails expand_by will silently return false
291 vs.expand_by(delta, true);
292 }
293 }
294 return 0;
295 }
296
297 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
298 jlong reserved_space_size, jlong magnitude, jlong iterations))
299 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
300 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
301 iterations);
302 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
303 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
304 return 1;
305 }
306
307 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
308 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
309 if (sizeof(size_t) < sizeof(jlong)) {
310 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
311 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
312 || iterations > size_t_max_value) {
313 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
314 return 2;
315 }
316 }
317
318 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
319 (size_t) magnitude, (size_t) iterations);
320 WB_END
321
322 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
323 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
324 WB_END
325
326 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
327 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
328 WB_END
329
330 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
331 return GCConfig::is_gc_selected_ergonomically();
332 WB_END
333
334 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
335 oop p = JNIHandles::resolve(obj);
336 #if INCLUDE_G1GC
337 if (UseG1GC) {
338 G1CollectedHeap* g1h = G1CollectedHeap::heap();
339 const HeapRegion* hr = g1h->heap_region_containing(p);
340 if (hr == NULL) {
341 return false;
342 }
343 return !(hr->is_young());
344 }
345 #endif
346 #if INCLUDE_PARALLELGC
347 if (UseParallelGC) {
348 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
349 return !psh->is_in_young(p);
350 }
351 #endif
352 #if INCLUDE_ZGC
353 if (UseZGC) {
354 return Universe::heap()->is_in(p);
355 }
356 #endif
357 GenCollectedHeap* gch = GenCollectedHeap::heap();
358 return !gch->is_in_young(p);
359 WB_END
360
361 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
362 oop p = JNIHandles::resolve(obj);
363 return p->size() * HeapWordSize;
364 WB_END
365
366 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
367 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
368 return (jlong)alignment;
369 WB_END
370
371 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
372 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
373 return (jlong)alignment;
374 WB_END
375
376 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
377 return Universe::heap()->supports_concurrent_phase_control();
378 WB_END
379
380 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
381 const char* const* phases = Universe::heap()->concurrent_phases();
382 jint nphases = 0;
383 for ( ; phases[nphases] != NULL; ++nphases) ;
384
385 ResourceMark rm(thread);
386 ThreadToNativeFromVM ttn(thread);
387 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
388 CHECK_JNI_EXCEPTION_(env, NULL);
389
390 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
391 CHECK_JNI_EXCEPTION_(env, NULL);
392
393 // If push fails, return with pending exception.
394 if (env->PushLocalFrame(nphases) < 0) return NULL;
395 for (jint i = 0; i < nphases; ++i) {
396 jstring phase = env->NewStringUTF(phases[i]);
397 CHECK_JNI_EXCEPTION_(env, NULL);
398 env->SetObjectArrayElement(result, i, phase);
399 CHECK_JNI_EXCEPTION_(env, NULL);
400 }
401 env->PopLocalFrame(NULL);
402
403 return result;
404 WB_END
405
406 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
407 Handle h_name(THREAD, JNIHandles::resolve(name));
408 ResourceMark rm;
409 const char* c_name = java_lang_String::as_utf8_string(h_name());
410 return Universe::heap()->request_concurrent_phase(c_name);
411 WB_END
412
413 #if INCLUDE_G1GC
414
415 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
416 if (UseG1GC) {
417 G1CollectedHeap* g1h = G1CollectedHeap::heap();
418 oop result = JNIHandles::resolve(obj);
419 const HeapRegion* hr = g1h->heap_region_containing(result);
420 return hr->is_humongous();
421 }
422 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
423 WB_END
424
425 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
426 if (UseG1GC) {
427 G1CollectedHeap* g1h = G1CollectedHeap::heap();
428 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
429 return hr->is_humongous();
430 }
431 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
432 WB_END
433
434 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
435 if (UseG1GC) {
436 G1CollectedHeap* g1h = G1CollectedHeap::heap();
437 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
438 return hr->is_free();
439 }
440 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
441 WB_END
442
443 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
444 if (UseG1GC) {
445 G1CollectedHeap* g1h = G1CollectedHeap::heap();
446 size_t nr = g1h->max_regions();
447 return (jlong)nr;
448 }
449 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
450 WB_END
451
452 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
453 if (UseG1GC) {
454 G1CollectedHeap* g1h = G1CollectedHeap::heap();
455 size_t nr = g1h->num_free_regions();
456 return (jlong)nr;
457 }
458 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
459 WB_END
460
461 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
462 if (UseG1GC) {
463 G1CollectedHeap* g1h = G1CollectedHeap::heap();
464 return g1h->concurrent_mark()->cm_thread()->during_cycle();
465 }
466 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
467 WB_END
468
469 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
470 if (UseG1GC) {
471 G1CollectedHeap* g1h = G1CollectedHeap::heap();
472 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
473 g1h->collect(GCCause::_wb_conc_mark);
474 return true;
475 }
476 return false;
477 }
478 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
479 WB_END
480
481 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
482 if (UseG1GC) {
483 return (jint)HeapRegion::GrainBytes;
484 }
485 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
486 WB_END
487
488 #endif // INCLUDE_G1GC
489
490 #if INCLUDE_PARALLELGC
491
492 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
493 if (UseParallelGC) {
494 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
495 }
496 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
497 WB_END
498
499 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
500 if (UseParallelGC) {
501 return ParallelScavengeHeap::heap()->generation_alignment();
502 }
503 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
504 WB_END
505
506 #endif // INCLUDE_PARALLELGC
507
508 #if INCLUDE_G1GC
509
510 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
511 if (UseG1GC) {
512 ResourceMark rm(THREAD);
513 G1CollectedHeap* g1h = G1CollectedHeap::heap();
514 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
515 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
516 return JNIHandles::make_local(env, h());
517 }
518 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
519 WB_END
520
521 class OldRegionsLivenessClosure: public HeapRegionClosure {
522
523 private:
524 const int _liveness;
525 size_t _total_count;
526 size_t _total_memory;
527 size_t _total_memory_to_free;
528
529 public:
530 OldRegionsLivenessClosure(int liveness) :
531 _liveness(liveness),
532 _total_count(0),
533 _total_memory(0),
534 _total_memory_to_free(0) { }
535
536 size_t total_count() { return _total_count; }
537 size_t total_memory() { return _total_memory; }
538 size_t total_memory_to_free() { return _total_memory_to_free; }
539
540 bool do_heap_region(HeapRegion* r) {
541 if (r->is_old()) {
542 size_t prev_live = r->marked_bytes();
543 size_t live = r->live_bytes();
544 size_t size = r->used();
545 size_t reg_size = HeapRegion::GrainBytes;
546 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
547 _total_memory += size;
548 ++_total_count;
549 if (size == reg_size) {
550 // we don't include non-full regions since they are unlikely included in mixed gc
551 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
552 _total_memory_to_free += size - prev_live;
553 }
554 }
555 }
556 return false;
557 }
558 };
559
560
561 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
562 if (!UseG1GC) {
563 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
564 }
565 if (liveness < 0) {
566 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
567 }
568
569 G1CollectedHeap* g1h = G1CollectedHeap::heap();
570 OldRegionsLivenessClosure rli(liveness);
571 g1h->heap_region_iterate(&rli);
572
573 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
574 result->long_at_put(0, rli.total_count());
575 result->long_at_put(1, rli.total_memory());
576 result->long_at_put(2, rli.total_memory_to_free());
577 return (jlongArray) JNIHandles::make_local(env, result);
578 WB_END
579
580 #endif // INCLUDE_G1GC
581
582 #if INCLUDE_NMT
583 // Alloc memory using the test memory type so that we can use that to see if
584 // NMT picks it up correctly
585 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
586 jlong addr = 0;
587 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
588 return addr;
589 WB_END
590
591 // Alloc memory with pseudo call stack. The test can create psudo malloc
592 // allocation site to stress the malloc tracking.
593 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
594 address pc = (address)(size_t)pseudo_stack;
595 NativeCallStack stack(&pc, 1);
596 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
597 WB_END
598
599 // Free the memory allocated by NMTAllocTest
600 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
601 os::free((void*)(uintptr_t)mem);
602 WB_END
603
604 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
605 jlong addr = 0;
606
607 addr = (jlong)(uintptr_t)os::reserve_memory(size);
608 MemTracker::record_virtual_memory_type((address)addr, mtTest);
609
610 return addr;
611 WB_END
612
613 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
614 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
615 MemTracker::record_virtual_memory_type((address)addr, mtTest);
616
617 return addr;
618 WB_END
619
620 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
621 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
622 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
623 WB_END
624
625 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
626 os::uncommit_memory((char *)(uintptr_t)addr, size);
627 WB_END
628
629 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
630 os::release_memory((char *)(uintptr_t)addr, size);
631 WB_END
632
633 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
634 // Test that we can downgrade NMT levels but not upgrade them.
635 if (MemTracker::tracking_level() == NMT_off) {
636 MemTracker::transition_to(NMT_off);
637 return MemTracker::tracking_level() == NMT_off;
638 } else {
639 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
640 MemTracker::transition_to(NMT_summary);
641 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
642
643 // Can't go to detail once NMT is set to summary.
644 MemTracker::transition_to(NMT_detail);
645 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
646
647 // Shutdown sets tracking level to minimal.
648 MemTracker::shutdown();
649 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
650
651 // Once the tracking level is minimal, we cannot increase to summary.
652 // The code ignores this request instead of asserting because if the malloc site
653 // table overflows in another thread, it tries to change the code to summary.
654 MemTracker::transition_to(NMT_summary);
655 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
656
657 // Really can never go up to detail, verify that the code would never do this.
658 MemTracker::transition_to(NMT_detail);
659 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
660 return MemTracker::tracking_level() == NMT_minimal;
661 }
662 WB_END
663
664 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
665 int hash_size = MallocSiteTable::hash_buckets();
666 assert(hash_size > 0, "NMT hash_size should be > 0");
667 return (jint)hash_size;
668 WB_END
669 #endif // INCLUDE_NMT
670
671 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
672 assert(method != NULL, "method should not be null");
673 ThreadToNativeFromVM ttn(thread);
674 return env->FromReflectedMethod(method);
675 }
676
677 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
678 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
679 private:
680 int _result;
681 const bool _make_not_entrant;
682 public:
683 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
684 _result(0), _make_not_entrant(make_not_entrant) { }
685 int result() const { return _result; }
686
687 void doit() {
688 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
689 if (t->has_last_Java_frame()) {
690 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
691 frame* f = fst.current();
692 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
693 RegisterMap* reg_map = fst.register_map();
694 Deoptimization::deoptimize(t, *f, reg_map);
695 if (_make_not_entrant) {
696 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
697 assert(cm != NULL, "sanity check");
698 cm->make_not_entrant();
699 }
700 ++_result;
701 }
702 }
703 }
704 }
705 }
706 };
707
708 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
709 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
710 VMThread::execute(&op);
711 return op.result();
712 WB_END
713
714 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
715 MutexLockerEx mu(Compile_lock);
716 CodeCache::mark_all_nmethods_for_deoptimization();
717 VM_Deoptimize op;
718 VMThread::execute(&op);
719 WB_END
720
721 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
722 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
723 int result = 0;
724 CHECK_JNI_EXCEPTION_(env, result);
725 MutexLockerEx mu(Compile_lock);
726 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
727 if (is_osr) {
728 result += mh->mark_osr_nmethods();
729 } else if (mh->code() != NULL) {
730 mh->code()->mark_for_deoptimization();
731 ++result;
732 }
733 result += CodeCache::mark_for_deoptimization(mh());
734 if (result > 0) {
735 VM_Deoptimize op;
736 VMThread::execute(&op);
737 }
738 return result;
739 WB_END
740
741 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
742 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
743 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
744 MutexLockerEx mu(Compile_lock);
745 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
746 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
747 if (code == NULL) {
748 return JNI_FALSE;
749 }
750 return (code->is_alive() && !code->is_marked_for_deoptimization());
751 WB_END
752
753 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
754 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
755 return false;
756 }
757 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
758 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
759 MutexLockerEx mu(Compile_lock);
760 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
761 if (is_osr) {
762 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
763 } else {
764 return CompilationPolicy::can_be_compiled(mh, comp_level);
765 }
766 WB_END
767
768 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
769 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
770 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
771 MutexLockerEx mu(Compile_lock);
772 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
773 return mh->queued_for_compilation();
774 WB_END
775
776 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
777 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
778 return false; // Intrinsic is not available on a non-existent compilation level.
779 }
780 jmethodID method_id, compilation_context_id;
781 method_id = reflected_method_to_jmid(thread, env, method);
782 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
783 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
784
785 DirectiveSet* directive;
786 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
787 assert(comp != NULL, "compiler not available");
788 if (compilation_context != NULL) {
789 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
790 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
791 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
792 directive = DirectivesStack::getMatchingDirective(cch, comp);
793 } else {
794 // Calling with NULL matches default directive
795 directive = DirectivesStack::getDefaultDirective(comp);
796 }
797 bool result = comp->is_intrinsic_available(mh, directive);
798 DirectivesStack::release(directive);
799 return result;
800 WB_END
801
802 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
803 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
804 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
805 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
806 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
807 return (code != NULL ? code->comp_level() : CompLevel_none);
808 WB_END
809
810 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
811 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
812 CHECK_JNI_EXCEPTION(env);
813 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
814 if (is_osr) {
815 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
816 } else {
817 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
818 }
819 WB_END
820
821 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
822 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
823 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
825 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
826 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
827 WB_END
828
829 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
830 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
831 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
832 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
833 bool result = mh->dont_inline();
834 mh->set_dont_inline(value == JNI_TRUE);
835 return result;
836 WB_END
837
838 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
839 if (comp_level == CompLevel_any) {
840 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
841 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
842 } else {
843 return CompileBroker::queue_size(comp_level);
844 }
845 WB_END
846
847 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
848 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
849 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
850 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
851 bool result = mh->force_inline();
852 mh->set_force_inline(value == JNI_TRUE);
853 return result;
854 WB_END
855
856 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
857 // Screen for unavailable/bad comp level or null method
858 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
859 if (method == NULL) {
860 tty->print_cr("WB error: request to compile NULL method");
861 return false;
862 }
863 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
864 tty->print_cr("WB error: invalid compilation level %d", comp_level);
865 return false;
866 }
867 if (comp == NULL) {
868 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
869 return false;
870 }
871
872 // Check if compilation is blocking
873 methodHandle mh(THREAD, method);
874 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
875 bool is_blocking = !directive->BackgroundCompilationOption;
876 DirectivesStack::release(directive);
877
878 // Compile method and check result
879 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
880 MutexLockerEx mu(Compile_lock);
881 bool is_queued = mh->queued_for_compilation();
882 if ((!is_blocking && is_queued) || nm != NULL) {
883 return true;
884 }
885 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
886 mh->print_short_name(tty);
887 tty->cr();
888 if (is_blocking && is_queued) {
889 tty->print_cr("WB error: blocking compilation is still in queue!");
890 }
891 return false;
892 }
893
894 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
895 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
896 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
897 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
898 WB_END
899
900 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
901 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
902 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
903 WB_END
904
905 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
906 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
907 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
908
909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
910 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
911 bool result = directive->PrintAssemblyOption;
912 DirectivesStack::release(directive);
913
914 return result;
915 WB_END
916
917 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
918 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
919 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
920
921 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
922
923 ResourceMark rm;
924 const char* error_msg = NULL;
925 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
926 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
927
928 if (m == NULL) {
929 assert(error_msg != NULL, "Always have an error message");
930 tty->print_cr("Got error: %s", error_msg);
931 return -1; // Pattern failed
932 }
933
934 // Pattern works - now check if it matches
935 int result;
936 if (m->match(mh, InlineMatcher::force_inline)) {
937 result = 2; // Force inline match
938 } else if (m->match(mh, InlineMatcher::dont_inline)) {
939 result = 1; // Dont inline match
940 } else {
941 result = 0; // No match
942 }
943 delete m;
944 return result;
945 WB_END
946
947 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
948 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
949 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
950
951 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
952
953 ResourceMark rm;
954 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
955
956 const char* error_msg = NULL;
957
958 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
959 if (m == NULL) {
960 assert(error_msg != NULL, "Must have error_msg");
961 tty->print_cr("Got error: %s", error_msg);
962 return -1;
963 }
964
965 // Pattern works - now check if it matches
966 int result = m->matches(mh);
967 delete m;
968 assert(result == 0 || result == 1, "Result out of range");
969 return result;
970 WB_END
971
972 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
973 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
974 CHECK_JNI_EXCEPTION(env);
975 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
976 MutexLockerEx mu(Compile_lock);
977 MethodData* mdo = mh->method_data();
978 MethodCounters* mcs = mh->method_counters();
979
980 if (mdo != NULL) {
981 mdo->init();
982 ResourceMark rm;
983 int arg_count = mdo->method()->size_of_parameters();
984 for (int i = 0; i < arg_count; i++) {
985 mdo->set_arg_modified(i, 0);
986 }
987 MutexLockerEx mu(mdo->extra_data_lock());
988 mdo->clean_method_data(/*always_clean*/true);
989 }
990
991 mh->clear_not_c1_compilable();
992 mh->clear_not_c2_compilable();
993 mh->clear_not_c2_osr_compilable();
994 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
995 if (mcs != NULL) {
996 mcs->backedge_counter()->init();
997 mcs->invocation_counter()->init();
998 mcs->set_interpreter_invocation_count(0);
999 mcs->set_interpreter_throwout_count(0);
1000
1001 #ifdef TIERED
1002 mcs->set_rate(0.0F);
1003 mh->set_prev_event_count(0);
1004 mh->set_prev_time(0);
1005 #endif
1006 }
1007 WB_END
1008
1009 template <typename T>
1010 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1011 if (name == NULL) {
1012 return false;
1013 }
1014 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1015 const char* flag_name = env->GetStringUTFChars(name, NULL);
1016 CHECK_JNI_EXCEPTION_(env, false);
1017 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1018 env->ReleaseStringUTFChars(name, flag_name);
1019 return (result == JVMFlag::SUCCESS);
1020 }
1021
1022 template <typename T>
1023 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1024 if (name == NULL) {
1025 return false;
1026 }
1027 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1028 const char* flag_name = env->GetStringUTFChars(name, NULL);
1029 CHECK_JNI_EXCEPTION_(env, false);
1030 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1031 env->ReleaseStringUTFChars(name, flag_name);
1032 return (result == JVMFlag::SUCCESS);
1033 }
1034
1035 template <typename T>
1036 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1037 ResourceMark rm(thread);
1038 jclass clazz = env->FindClass(name->as_C_string());
1039 CHECK_JNI_EXCEPTION_(env, NULL);
1040 jmethodID methodID = env->GetStaticMethodID(clazz,
1041 vmSymbols::valueOf_name()->as_C_string(),
1042 sig->as_C_string());
1043 CHECK_JNI_EXCEPTION_(env, NULL);
1044 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1045 CHECK_JNI_EXCEPTION_(env, NULL);
1046 return result;
1047 }
1048
1049 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1050 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1051 }
1052 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1053 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1054 }
1055 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1056 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1057 }
1058 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1059 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1060 }*/
1061 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1062 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1063 }
1064
1065 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1066 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1067 const char* flag_name = env->GetStringUTFChars(name, NULL);
1068 CHECK_JNI_EXCEPTION_(env, NULL);
1069 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1070 env->ReleaseStringUTFChars(name, flag_name);
1071 return result;
1072 }
1073
1074 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1075 JVMFlag* flag = getVMFlag(thread, env, name);
1076 return (flag != NULL) && flag->is_constant_in_binary();
1077 WB_END
1078
1079 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1080 JVMFlag* flag = getVMFlag(thread, env, name);
1081 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1082 WB_END
1083
1084 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1085 bool result;
1086 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1087 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1088 return booleanBox(thread, env, result);
1089 }
1090 return NULL;
1091 WB_END
1092
1093 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1094 int result;
1095 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1096 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1097 return longBox(thread, env, result);
1098 }
1099 return NULL;
1100 WB_END
1101
1102 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1103 uint result;
1104 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1105 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1106 return longBox(thread, env, result);
1107 }
1108 return NULL;
1109 WB_END
1110
1111 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1112 intx result;
1113 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1114 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1115 return longBox(thread, env, result);
1116 }
1117 return NULL;
1118 WB_END
1119
1120 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1121 uintx result;
1122 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1123 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1124 return longBox(thread, env, result);
1125 }
1126 return NULL;
1127 WB_END
1128
1129 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1130 uint64_t result;
1131 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1132 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1133 return longBox(thread, env, result);
1134 }
1135 return NULL;
1136 WB_END
1137
1138 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1139 size_t result;
1140 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1141 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1142 return longBox(thread, env, result);
1143 }
1144 return NULL;
1145 WB_END
1146
1147 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1148 double result;
1149 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1150 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1151 return doubleBox(thread, env, result);
1152 }
1153 return NULL;
1154 WB_END
1155
1156 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1157 ccstr ccstrResult;
1158 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1159 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1160 jstring result = env->NewStringUTF(ccstrResult);
1161 CHECK_JNI_EXCEPTION_(env, NULL);
1162 return result;
1163 }
1164 return NULL;
1165 WB_END
1166
1167 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1168 bool result = value == JNI_TRUE ? true : false;
1169 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1170 WB_END
1171
1172 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1173 int result = value;
1174 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1175 WB_END
1176
1177 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1178 uint result = value;
1179 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1180 WB_END
1181
1182 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1183 intx result = value;
1184 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1185 WB_END
1186
1187 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1188 uintx result = value;
1189 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1190 WB_END
1191
1192 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1193 uint64_t result = value;
1194 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1195 WB_END
1196
1197 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1198 size_t result = value;
1199 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1200 WB_END
1201
1202 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1203 double result = value;
1204 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1205 WB_END
1206
1207 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1208 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1209 const char* ccstrValue;
1210 if (value == NULL) {
1211 ccstrValue = NULL;
1212 }
1213 else {
1214 ccstrValue = env->GetStringUTFChars(value, NULL);
1215 CHECK_JNI_EXCEPTION(env);
1216 }
1217 ccstr ccstrResult = ccstrValue;
1218 bool needFree;
1219 {
1220 ThreadInVMfromNative ttvfn(thread); // back to VM
1221 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1222 }
1223 if (value != NULL) {
1224 env->ReleaseStringUTFChars(value, ccstrValue);
1225 }
1226 if (needFree) {
1227 FREE_C_HEAP_ARRAY(char, ccstrResult);
1228 }
1229 WB_END
1230
1231 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1232 WhiteBox::compilation_locked = true;
1233 WB_END
1234
1235 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1236 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1237 WhiteBox::compilation_locked = false;
1238 mo.notify_all();
1239 WB_END
1240
1241 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1242 // Force a code cache sweep and block until it finished
1243 NMethodSweeper::force_sweep();
1244 WB_END
1245
1246 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1247 ResourceMark rm(THREAD);
1248 int len;
1249 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1250 return (StringTable::lookup(name, len) != NULL);
1251 WB_END
1252
1253 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1254 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1255 Universe::heap()->collect(GCCause::_wb_full_gc);
1256 #if INCLUDE_G1GC
1257 if (UseG1GC) {
1258 // Needs to be cleared explicitly for G1
1259 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1260 }
1261 #endif // INCLUDE_G1GC
1262 WB_END
1263
1264 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1265 Universe::heap()->collect(GCCause::_wb_young_gc);
1266 WB_END
1267
1268 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1269 // static+volatile in order to force the read to happen
1270 // (not be eliminated by the compiler)
1271 static char c;
1272 static volatile char* p;
1273
1274 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1275 if (p == NULL) {
1276 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1277 }
1278
1279 c = *p;
1280 WB_END
1281
1282 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1283 const char* features = VM_Version::features_string();
1284 ThreadToNativeFromVM ttn(thread);
1285 jstring features_string = env->NewStringUTF(features);
1286
1287 CHECK_JNI_EXCEPTION_(env, NULL);
1288
1289 return features_string;
1290 WB_END
1291
1292 int WhiteBox::get_blob_type(const CodeBlob* code) {
1293 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1294 if (code->is_aot()) {
1295 return -1;
1296 }
1297 return CodeCache::get_code_heap(code)->code_blob_type();
1298 }
1299
1300 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1301 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1302 return CodeCache::get_code_heap(blob_type);
1303 }
1304
1305 struct CodeBlobStub {
1306 CodeBlobStub(const CodeBlob* blob) :
1307 name(os::strdup(blob->name())),
1308 size(blob->size()),
1309 blob_type(WhiteBox::get_blob_type(blob)),
1310 address((jlong) blob) { }
1311 ~CodeBlobStub() { os::free((void*) name); }
1312 const char* const name;
1313 const jint size;
1314 const jint blob_type;
1315 const jlong address;
1316 };
1317
1318 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1319 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1320 CHECK_JNI_EXCEPTION_(env, NULL);
1321 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1322
1323 jstring name = env->NewStringUTF(cb->name);
1324 CHECK_JNI_EXCEPTION_(env, NULL);
1325 env->SetObjectArrayElement(result, 0, name);
1326
1327 jobject obj = integerBox(thread, env, cb->size);
1328 CHECK_JNI_EXCEPTION_(env, NULL);
1329 env->SetObjectArrayElement(result, 1, obj);
1330
1331 obj = integerBox(thread, env, cb->blob_type);
1332 CHECK_JNI_EXCEPTION_(env, NULL);
1333 env->SetObjectArrayElement(result, 2, obj);
1334
1335 obj = longBox(thread, env, cb->address);
1336 CHECK_JNI_EXCEPTION_(env, NULL);
1337 env->SetObjectArrayElement(result, 3, obj);
1338
1339 return result;
1340 }
1341
1342 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1343 ResourceMark rm(THREAD);
1344 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1345 CHECK_JNI_EXCEPTION_(env, NULL);
1346 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1347 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1348 jobjectArray result = NULL;
1349 if (code == NULL) {
1350 return result;
1351 }
1352 int comp_level = code->comp_level();
1353 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1354
1355 ThreadToNativeFromVM ttn(thread);
1356 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1357 CHECK_JNI_EXCEPTION_(env, NULL);
1358 result = env->NewObjectArray(5, clazz, NULL);
1359 if (result == NULL) {
1360 return result;
1361 }
1362
1363 CodeBlobStub stub(code);
1364 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1365 CHECK_JNI_EXCEPTION_(env, NULL);
1366 env->SetObjectArrayElement(result, 0, codeBlob);
1367
1368 jobject level = integerBox(thread, env, comp_level);
1369 CHECK_JNI_EXCEPTION_(env, NULL);
1370 env->SetObjectArrayElement(result, 1, level);
1371
1372 jbyteArray insts = env->NewByteArray(insts_size);
1373 CHECK_JNI_EXCEPTION_(env, NULL);
1374 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1375 env->SetObjectArrayElement(result, 2, insts);
1376
1377 jobject id = integerBox(thread, env, code->compile_id());
1378 CHECK_JNI_EXCEPTION_(env, NULL);
1379 env->SetObjectArrayElement(result, 3, id);
1380
1381 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1382 CHECK_JNI_EXCEPTION_(env, NULL);
1383 env->SetObjectArrayElement(result, 4, entry_point);
1384
1385 return result;
1386 WB_END
1387
1388 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1389 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1390 BufferBlob* blob;
1391 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1392 if (full_size < size) {
1393 full_size += align_up(size - full_size, oopSize);
1394 }
1395 {
1396 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1397 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1398 if (blob != NULL) {
1399 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1400 }
1401 }
1402 // Track memory usage statistic after releasing CodeCache_lock
1403 MemoryService::track_code_cache_memory_usage();
1404 return blob;
1405 }
1406
1407 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1408 if (size < 0) {
1409 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1410 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1411 }
1412 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1413 WB_END
1414
1415 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1416 if (addr == 0) {
1417 return;
1418 }
1419 BufferBlob::free((BufferBlob*) addr);
1420 WB_END
1421
1422 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1423 ResourceMark rm;
1424 GrowableArray<CodeBlobStub*> blobs;
1425 {
1426 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1427 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1428 if (heap == NULL) {
1429 return NULL;
1430 }
1431 for (CodeBlob* cb = (CodeBlob*) heap->first();
1432 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1433 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1434 new (stub) CodeBlobStub(cb);
1435 blobs.append(stub);
1436 }
1437 }
1438 if (blobs.length() == 0) {
1439 return NULL;
1440 }
1441 ThreadToNativeFromVM ttn(thread);
1442 jobjectArray result = NULL;
1443 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1444 CHECK_JNI_EXCEPTION_(env, NULL);
1445 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1446 CHECK_JNI_EXCEPTION_(env, NULL);
1447 if (result == NULL) {
1448 return result;
1449 }
1450 int i = 0;
1451 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1452 it != blobs.end(); ++it) {
1453 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1454 CHECK_JNI_EXCEPTION_(env, NULL);
1455 env->SetObjectArrayElement(result, i, obj);
1456 CHECK_JNI_EXCEPTION_(env, NULL);
1457 ++i;
1458 }
1459 return result;
1460 WB_END
1461
1462 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1463 return CompileBroker::get_compilation_activity_mode();
1464 WB_END
1465
1466 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1467 if (addr == 0) {
1468 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1469 "WB_GetCodeBlob: addr is null");
1470 }
1471 ThreadToNativeFromVM ttn(thread);
1472 CodeBlobStub stub((CodeBlob*) addr);
1473 return codeBlob2objectArray(thread, env, &stub);
1474 WB_END
1475
1476 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1477 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1478 CHECK_JNI_EXCEPTION_(env, 0);
1479 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1480 return (jlong) mh->method_data();
1481 WB_END
1482
1483 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1484 return (jlong) Thread::current()->stack_size();
1485 WB_END
1486
1487 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1488 JavaThread* t = JavaThread::current();
1489 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1490 WB_END
1491
1492
1493 int WhiteBox::array_bytes_to_length(size_t bytes) {
1494 return Array<u1>::bytes_to_length(bytes);
1495 }
1496
1497 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1498 if (size < 0) {
1499 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1500 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1501 }
1502
1503 oop class_loader_oop = JNIHandles::resolve(class_loader);
1504 ClassLoaderData* cld = class_loader_oop != NULL
1505 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1506 : ClassLoaderData::the_null_class_loader_data();
1507
1508 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1509
1510 return (jlong)(uintptr_t)metadata;
1511 WB_END
1512
1513 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1514 oop class_loader_oop = JNIHandles::resolve(class_loader);
1515 ClassLoaderData* cld = class_loader_oop != NULL
1516 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1517 : ClassLoaderData::the_null_class_loader_data();
1518
1519 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1520 WB_END
1521
1522 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1523 jstring version, jstring location, jobjectArray packages))
1524 ResourceMark rm(THREAD);
1525
1526 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1527 objArrayHandle packages_h(THREAD, packages_oop);
1528 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1529
1530 char** pkgs = NULL;
1531 if (num_packages > 0) {
1532 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1533 for (int x = 0; x < num_packages; x++) {
1534 oop pkg_str = packages_h->obj_at(x);
1535 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1536 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1537 err_msg("Bad package name"));
1538 }
1539 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1540 }
1541 }
1542 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1543 WB_END
1544
1545 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1546 ResourceMark rm(THREAD);
1547 char* package_name = NULL;
1548 if (package != NULL) {
1549 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1550 }
1551 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1552 WB_END
1553
1554 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1555 ResourceMark rm(THREAD);
1556 char* package_name = NULL;
1557 if (package != NULL) {
1558 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1559 }
1560 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1561 WB_END
1562
1563 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1564 ResourceMark rm(THREAD);
1565 char* package_name = NULL;
1566 if (package != NULL) {
1567 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1568 }
1569 Modules::add_module_exports(module, package_name, NULL, CHECK);
1570 WB_END
1571
1572 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1573 Modules::add_reads_module(from_module, source_module, CHECK);
1574 WB_END
1575
1576 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1577 if (inc < 0) {
1578 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1579 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1580 }
1581
1582 jlong max_size_t = (jlong) ((size_t) -1);
1583 if (inc > max_size_t) {
1584 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1585 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1586 }
1587
1588 size_t new_cap_until_GC = 0;
1589 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1590 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1591 if (!success) {
1592 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1593 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1594 "due to contention with another thread");
1595 }
1596 return (jlong) new_cap_until_GC;
1597 WB_END
1598
1599 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1600 return (jlong) MetaspaceGC::capacity_until_GC();
1601 WB_END
1602
1603 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1604 return MetaspaceGC::should_concurrent_collect();
1605 WB_END
1606
1607 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1608 return (jlong)Metaspace::reserve_alignment();
1609 WB_END
1610
1611 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1612 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1613 Monitor::_safepoint_check_always :
1614 Monitor::_safepoint_check_never;
1615 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1616 attemptedNoSafepointValue == JNI_TRUE);
1617 WB_END
1618
1619 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1620 oop obj_oop = JNIHandles::resolve(obj);
1621 return (jboolean) obj_oop->mark()->has_monitor();
1622 WB_END
1623
1624 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1625 VM_ForceSafepoint force_safepoint_op;
1626 VMThread::execute(&force_safepoint_op);
1627 WB_END
1628
1629 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1630 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1631 return (jlong) ik->constants();
1632 WB_END
1633
1634 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1635 return ConstantPool::CPCACHE_INDEX_TAG;
1636 WB_END
1637
1638 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1639 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1640 ConstantPool* cp = ik->constants();
1641 if (cp->cache() == NULL) {
1642 return -1;
1643 }
1644 return cp->cache()->length();
1645 WB_END
1646
1647 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1648 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1649 ConstantPool* cp = ik->constants();
1650 if (cp->cache() == NULL) {
1651 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1652 }
1653 jint cpci = index;
1654 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1655 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1656 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1657 }
1658 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1659 return cpi;
1660 WB_END
1661
1662 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1663 return ConstantPool::encode_invokedynamic_index(index);
1664 WB_END
1665
1666 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1667 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1668 VMThread::execute(&clear_ics);
1669 WB_END
1670
1671 template <typename T>
1672 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1673 assert(value != NULL, "sanity");
1674 if (method == NULL || name == NULL) {
1675 return false;
1676 }
1677 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1678 CHECK_JNI_EXCEPTION_(env, false);
1679 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1680 // can't be in VM when we call JNI
1681 ThreadToNativeFromVM ttnfv(thread);
1682 const char* flag_name = env->GetStringUTFChars(name, NULL);
1683 CHECK_JNI_EXCEPTION_(env, false);
1684 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1685 env->ReleaseStringUTFChars(name, flag_name);
1686 return result;
1687 }
1688
1689 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1690 bool result;
1691 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1692 // can't be in VM when we call JNI
1693 ThreadToNativeFromVM ttnfv(thread);
1694 return booleanBox(thread, env, result);
1695 }
1696 return NULL;
1697 WB_END
1698
1699 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1700 intx result;
1701 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1702 // can't be in VM when we call JNI
1703 ThreadToNativeFromVM ttnfv(thread);
1704 return longBox(thread, env, result);
1705 }
1706 return NULL;
1707 WB_END
1708
1709 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1710 uintx result;
1711 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1712 // can't be in VM when we call JNI
1713 ThreadToNativeFromVM ttnfv(thread);
1714 return longBox(thread, env, result);
1715 }
1716 return NULL;
1717 WB_END
1718
1719 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1720 double result;
1721 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1722 // can't be in VM when we call JNI
1723 ThreadToNativeFromVM ttnfv(thread);
1724 return doubleBox(thread, env, result);
1725 }
1726 return NULL;
1727 WB_END
1728
1729 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1730 ccstr ccstrResult;
1731 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1732 // can't be in VM when we call JNI
1733 ThreadToNativeFromVM ttnfv(thread);
1734 jstring result = env->NewStringUTF(ccstrResult);
1735 CHECK_JNI_EXCEPTION_(env, NULL);
1736 return result;
1737 }
1738 return NULL;
1739 WB_END
1740
1741 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1742 oop obj_oop = JNIHandles::resolve(obj);
1743 return MetaspaceShared::is_archive_object(obj_oop);
1744 WB_END
1745
1746 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1747 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1748 WB_END
1749
1750 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1751 return !StringTable::shared_string_mapped();
1752 WB_END
1753
1754 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1755 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1756 if (k->is_instance_klass()) {
1757 InstanceKlass *ik = InstanceKlass::cast(k);
1758 ConstantPool *cp = ik->constants();
1759 objArrayOop refs = cp->resolved_references();
1760 return (jobject)JNIHandles::make_local(env, refs);
1761 } else {
1762 return NULL;
1763 }
1764 WB_END
1765
1766 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1767 return MetaspaceShared::open_archive_heap_region_mapped();
1768 WB_END
1769
1770 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1771 #if INCLUDE_CDS
1772 # ifdef _LP64
1773 if (!UseCompressedOops || !UseCompressedClassPointers) {
1774 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1775 return false;
1776 }
1777 # endif // _LP64
1778 return true;
1779 #else
1780 return false;
1781 #endif // INCLUDE_CDS
1782 WB_END
1783
1784 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1785 return MetaspaceShared::is_heap_object_archiving_allowed();
1786 WB_END
1787
1788
1789 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1790 #if INCLUDE_JFR
1791 return true;
1792 #else
1793 return false;
1794 #endif // INCLUDE_JFR
1795 WB_END
1796
1797 #if INCLUDE_CDS
1798
1799 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1800 ResourceMark rm;
1801 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1802 int result = CDSOffsets::find_offset(c_name);
1803 return (jint)result;
1804 WB_END
1805
1806 #endif // INCLUDE_CDS
1807
1808 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1809 class TraceSelfClosure : public ThreadClosure {
1810 jint _num_threads_completed;
1811
1812 void do_thread(Thread* th) {
1813 assert(th->is_Java_thread(), "sanity");
1814 JavaThread* jt = (JavaThread*)th;
1815 ResourceMark rm;
1816
1817 jt->print_on(tty);
1818 jt->print_stack_on(tty);
1819 tty->cr();
1820 Atomic::inc(&_num_threads_completed);
1821 }
1822
1823 public:
1824 TraceSelfClosure() : _num_threads_completed(0) {}
1825
1826 jint num_threads_completed() const { return _num_threads_completed; }
1827 };
1828 TraceSelfClosure tsc;
1829
1830 if (all_threads) {
1831 Handshake::execute(&tsc);
1832 } else {
1833 oop thread_oop = JNIHandles::resolve(thread_handle);
1834 if (thread_oop != NULL) {
1835 JavaThread* target = java_lang_Thread::thread(thread_oop);
1836 Handshake::execute(&tsc, target);
1837 }
1838 }
1839 return tsc.num_threads_completed();
1840 WB_END
1841
1842 //Some convenience methods to deal with objects from java
1843 int WhiteBox::offset_for_field(const char* field_name, oop object,
1844 Symbol* signature_symbol) {
1845 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1846 Thread* THREAD = Thread::current();
1847
1848 //Get the class of our object
1849 Klass* arg_klass = object->klass();
1850 //Turn it into an instance-klass
1851 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1852
1853 //Create symbols to look for in the class
1854 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1855 THREAD);
1856
1857 //To be filled in with an offset of the field we're looking for
1858 fieldDescriptor fd;
1859
1860 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1861 if (res == NULL) {
1862 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1863 name_symbol->as_C_string());
1864 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1865 }
1866
1867 //fetch the field at the offset we've found
1868 int dest_offset = fd.offset();
1869
1870 return dest_offset;
1871 }
1872
1873
1874 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1875 int offset = offset_for_field(field_name, object,
1876 vmSymbols::string_signature());
1877 oop string = object->obj_field(offset);
1878 if (string == NULL) {
1879 return NULL;
1880 }
1881 const char* ret = java_lang_String::as_utf8_string(string);
1882 return ret;
1883 }
1884
1885 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1886 int offset =
1887 offset_for_field(field_name, object, vmSymbols::bool_signature());
1888 bool ret = (object->bool_field(offset) == JNI_TRUE);
1889 return ret;
1890 }
1891
1892 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1893 ResourceMark rm;
1894 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1895
1896 // one by one registration natives for exception catching
1897 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1898 CHECK_JNI_EXCEPTION(env);
1899 for (int i = 0, n = method_count; i < n; ++i) {
1900 // Skip dummy entries
1901 if (method_array[i].fnPtr == NULL) continue;
1902 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1903 jthrowable throwable_obj = env->ExceptionOccurred();
1904 if (throwable_obj != NULL) {
1905 env->ExceptionClear();
1906 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1907 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1908 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1909 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1910 method_array[i].name, method_array[i].signature);
1911 }
1912 } else {
1913 // Registration failed unexpectedly.
1914 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1915 method_array[i].name, method_array[i].signature);
1916 env->UnregisterNatives(wbclass);
1917 break;
1918 }
1919 }
1920 }
1921 }
1922
1923 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1924 // can't be in VM when we call JNI
1925 ThreadToNativeFromVM ttnfv(thread);
1926 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1927 CHECK_JNI_EXCEPTION_(env, 0);
1928 int ret;
1929 {
1930 ThreadInVMfromNative ttvfn(thread); // back to VM
1931 ret = DirectivesParser::parse_string(dir, tty);
1932 }
1933 env->ReleaseStringUTFChars(compDirect, dir);
1934 // -1 for error parsing directive. Return 0 as number of directives added.
1935 if (ret == -1) {
1936 ret = 0;
1937 }
1938 return (jint) ret;
1939 WB_END
1940
1941 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1942 DirectivesStack::pop(count);
1943 WB_END
1944
1945 // Checks that the library libfile has the noexecstack bit set.
1946 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1947 jboolean ret = false;
1948 #ifdef LINUX
1949 // Can't be in VM when we call JNI.
1950 ThreadToNativeFromVM ttnfv(thread);
1951 const char* lf = env->GetStringUTFChars(libfile, NULL);
1952 CHECK_JNI_EXCEPTION_(env, 0);
1953 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1954 env->ReleaseStringUTFChars(libfile, lf);
1955 #endif
1956 return ret;
1957 WB_END
1958
1959 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1960 LINUX_ONLY(return OSContainer::is_containerized();)
1961 return false;
1962 WB_END
1963
1964 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1965 os::print_os_info(tty);
1966 WB_END
1967
1968 // Elf decoder
1969 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1970 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1971 ElfFile::_do_not_cache_elf_section = true;
1972 #endif
1973 WB_END
1974
1975
1976 #define CC (char*)
1977
1978 static JNINativeMethod methods[] = {
1979 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1980 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1981 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1982 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1983 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1984 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1985 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1986 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1987 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1988 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1989 {CC"parseCommandLine0",
1990 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1991 (void*) &WB_ParseCommandLine
1992 },
1993 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1994 (void*)&WB_AddToBootstrapClassLoaderSearch},
1995 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1996 (void*)&WB_AddToSystemClassLoaderSearch},
1997 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1998 (void*)&WB_GetCompressedOopsMaxHeapSize},
1999 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2000 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2001 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2002 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2003 #if INCLUDE_CDS
2004 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2005 #endif
2006 #if INCLUDE_G1GC
2007 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2008 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2009 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2010 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2011 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2012 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2013 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2014 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2015 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2016 (void*)&WB_G1AuxiliaryMemoryUsage },
2017 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2018 #endif // INCLUDE_G1GC
2019 #if INCLUDE_PARALLELGC
2020 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2021 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2022 #endif
2023 #if INCLUDE_NMT
2024 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2025 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2026 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2027 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2028 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2029 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2030 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2031 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2032 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2033 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2034 #endif // INCLUDE_NMT
2035 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2036 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2037 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2038 (void*)&WB_DeoptimizeMethod },
2039 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2040 (void*)&WB_IsMethodCompiled },
2041 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2042 (void*)&WB_IsMethodCompilable},
2043 {CC"isMethodQueuedForCompilation0",
2044 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2045 {CC"isIntrinsicAvailable0",
2046 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2047 (void*)&WB_IsIntrinsicAvailable},
2048 {CC"makeMethodNotCompilable0",
2049 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2050 {CC"testSetDontInlineMethod0",
2051 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2052 {CC"getMethodCompilationLevel0",
2053 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2054 {CC"getMethodEntryBci0",
2055 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2056 {CC"getCompileQueueSize",
2057 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2058 {CC"testSetForceInlineMethod0",
2059 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2060 {CC"enqueueMethodForCompilation0",
2061 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2062 {CC"enqueueInitializerForCompilation0",
2063 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2064 {CC"clearMethodState0",
2065 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2066 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2067 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2068 {CC"matchesMethod",
2069 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2070 (void*)&WB_MatchesMethod},
2071 {CC"matchesInline",
2072 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2073 (void*)&WB_MatchesInline},
2074 {CC"shouldPrintAssembly",
2075 CC"(Ljava/lang/reflect/Executable;I)Z",
2076 (void*)&WB_ShouldPrintAssembly},
2077
2078 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2079 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2080 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2081 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2082 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2083 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2084 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2085 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2086 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2087 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2088 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2089 (void*)&WB_SetStringVMFlag},
2090 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2091 (void*)&WB_GetBooleanVMFlag},
2092 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2093 (void*)&WB_GetIntVMFlag},
2094 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2095 (void*)&WB_GetUintVMFlag},
2096 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2097 (void*)&WB_GetIntxVMFlag},
2098 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2099 (void*)&WB_GetUintxVMFlag},
2100 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2101 (void*)&WB_GetUint64VMFlag},
2102 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2103 (void*)&WB_GetSizeTVMFlag},
2104 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2105 (void*)&WB_GetDoubleVMFlag},
2106 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2107 (void*)&WB_GetStringVMFlag},
2108 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2109 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2110 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2111 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2112 {CC"allocateMetaspace",
2113 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2114 {CC"freeMetaspace",
2115 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2116 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2117 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2118 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2119 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2120 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2121 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2122 (void*)&WB_GetNMethod },
2123 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2124 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2125 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2126 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2127 {CC"getCompilationActivityMode",
2128 CC"()I", (void*)&WB_GetCompilationActivityMode},
2129 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2130 (void*)&WB_GetMethodData },
2131 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2132 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2133 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2134 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2135 (void*)&WB_DefineModule },
2136 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2137 (void*)&WB_AddModuleExports },
2138 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2139 (void*)&WB_AddReadsModule },
2140 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2141 (void*)&WB_AddModuleExportsToAllUnnamed },
2142 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2143 (void*)&WB_AddModuleExportsToAll },
2144 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2145 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2146 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2147 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2148 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2149 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2150 {CC"remapInstructionOperandFromCPCache0",
2151 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2152 {CC"encodeConstantPoolIndyIndex0",
2153 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2154 {CC"getMethodBooleanOption",
2155 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2156 (void*)&WB_GetMethodBooleaneOption},
2157 {CC"getMethodIntxOption",
2158 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2159 (void*)&WB_GetMethodIntxOption},
2160 {CC"getMethodUintxOption",
2161 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2162 (void*)&WB_GetMethodUintxOption},
2163 {CC"getMethodDoubleOption",
2164 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2165 (void*)&WB_GetMethodDoubleOption},
2166 {CC"getMethodStringOption",
2167 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2168 (void*)&WB_GetMethodStringOption},
2169 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2170 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2171 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2172 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2173 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2174 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2175 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2176 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2177
2178 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2179 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2180 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2181 (void*)&WB_AddCompilerDirective },
2182 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2183 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2184 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2185 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2186 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2187 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2188 (void*)&WB_GetConcurrentGCPhases},
2189 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2190 (void*)&WB_RequestConcurrentGCPhase},
2191 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2192 (void*)&WB_CheckLibSpecifiesNoexecstack},
2193 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2194 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2195 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2196 };
2197
2198
2199 #undef CC
2200
2201 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2202 {
2203 if (WhiteBoxAPI) {
2204 // Make sure that wbclass is loaded by the null classloader
2205 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2206 Handle loader(THREAD, ik->class_loader());
2207 if (loader.is_null()) {
2208 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2209 WhiteBox::set_used();
2210 }
2211 }
2212 }
2213 JVM_END