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/protectionDomainCache.hpp"
32 #include "classfile/stringTable.hpp"
33 #include "code/codeCache.hpp"
34 #include "compiler/methodMatcher.hpp"
35 #include "compiler/directivesParser.hpp"
36 #include "gc/shared/gcConfig.hpp"
37 #include "gc/shared/genCollectedHeap.hpp"
38 #include "jvmtifiles/jvmtiEnv.hpp"
39 #include "memory/metadataFactory.hpp"
40 #include "memory/metaspaceShared.hpp"
41 #include "memory/iterator.hpp"
42 #include "memory/resourceArea.hpp"
43 #include "memory/universe.hpp"
44 #include "memory/oopFactory.hpp"
45 #include "oops/array.hpp"
46 #include "oops/constantPool.inline.hpp"
47 #include "oops/method.inline.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/objArrayOop.inline.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/typeArrayOop.inline.hpp"
52 #include "prims/resolvedMethodTable.hpp"
53 #include "prims/wbtestmethods/parserTests.hpp"
54 #include "prims/whitebox.inline.hpp"
55 #include "runtime/arguments.hpp"
56 #include "runtime/compilationPolicy.hpp"
57 #include "runtime/deoptimization.hpp"
58 #include "runtime/fieldDescriptor.inline.hpp"
59 #include "runtime/flags/jvmFlag.hpp"
60 #include "runtime/frame.inline.hpp"
61 #include "runtime/handshake.hpp"
62 #include "runtime/interfaceSupport.inline.hpp"
63 #include "runtime/javaCalls.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/os.hpp"
66 #include "runtime/sweeper.hpp"
67 #include "runtime/thread.hpp"
68 #include "runtime/threadSMR.hpp"
69 #include "runtime/vm_version.hpp"
70 #include "services/memoryService.hpp"
71 #include "utilities/align.hpp"
72 #include "utilities/debug.hpp"
73 #include "utilities/elfFile.hpp"
74 #include "utilities/exceptions.hpp"
75 #include "utilities/macros.hpp"
76 #if INCLUDE_CDS
77 #include "prims/cdsoffsets.hpp"
78 #endif // INCLUDE_CDS
79 #if INCLUDE_G1GC
80 #include "gc/g1/g1CollectedHeap.inline.hpp"
81 #include "gc/g1/g1ConcurrentMark.hpp"
82 #include "gc/g1/g1ConcurrentMarkThread.hpp"
83 #include "gc/g1/heapRegionRemSet.hpp"
84 #endif // INCLUDE_G1GC
85 #if INCLUDE_PARALLELGC
86 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
87 #include "gc/parallel/adjoiningGenerations.hpp"
88 #endif // INCLUDE_PARALLELGC
89 #if INCLUDE_NMT
90 #include "services/mallocSiteTable.hpp"
91 #include "services/memTracker.hpp"
92 #include "utilities/nativeCallStack.hpp"
93 #endif // INCLUDE_NMT
94
95 #ifdef LINUX
96 #include "osContainer_linux.hpp"
97 #endif
98
99 #define SIZE_T_MAX_VALUE ((size_t) -1)
100
101 #define CHECK_JNI_EXCEPTION_(env, value) \
102 do { \
103 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
104 THREAD->clear_pending_jni_exception_check(); \
105 if (HAS_PENDING_EXCEPTION) { \
106 return(value); \
107 } \
108 } while (0)
109
110 #define CHECK_JNI_EXCEPTION(env) \
111 do { \
112 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
113 THREAD->clear_pending_jni_exception_check(); \
114 if (HAS_PENDING_EXCEPTION) { \
115 return; \
116 } \
117 } while (0)
118
119 bool WhiteBox::_used = false;
120 volatile bool WhiteBox::compilation_locked = false;
121
122 class VM_WhiteBoxOperation : public VM_Operation {
123 public:
124 VM_WhiteBoxOperation() { }
125 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
126 bool allow_nested_vm_operations() const { return true; }
127 };
128
129
130 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
131 return (jlong)(void*)JNIHandles::resolve(obj);
132 WB_END
133
134 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
135 return heapOopSize;
136 WB_END
137
138 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
139 return os::vm_page_size();
140 WB_END
141
142 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
143 return os::vm_allocation_granularity();
144 WB_END
145
146 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
147 return os::large_page_size();
148 WB_END
149
150 class WBIsKlassAliveClosure : public LockedClassesDo {
151 Symbol* _name;
152 bool _found;
153 public:
154 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
155
156 void do_klass(Klass* k) {
157 if (_found) return;
158 Symbol* ksym = k->name();
159 if (ksym->fast_compare(_name) == 0) {
160 _found = true;
161 }
162 }
163
164 bool found() const {
165 return _found;
166 }
167 };
168
169 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
170 oop h_name = JNIHandles::resolve(name);
171 if (h_name == NULL) return false;
172 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
173 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
174
175 WBIsKlassAliveClosure closure(sym);
176 ClassLoaderDataGraph::classes_do(&closure);
177
178 return closure.found();
179 WB_END
180
181 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
182 #if INCLUDE_JVMTI
183 ResourceMark rm;
184 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
185 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
186 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
187 assert(err == JVMTI_ERROR_NONE, "must not fail");
188 #endif
189 }
190 WB_END
191
192 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
193 #if INCLUDE_JVMTI
194 ResourceMark rm;
195 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
196 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
197 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
198 assert(err == JVMTI_ERROR_NONE, "must not fail");
199 #endif
200 }
201 WB_END
202
203
204 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
205 return (jlong)Arguments::max_heap_for_compressed_oops();
206 }
207 WB_END
208
209 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
210 CollectorPolicy * p = Universe::heap()->collector_policy();
211 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
212 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
213 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
214 p->space_alignment(), p->heap_alignment());
215 }
216 WB_END
217
218 #ifndef PRODUCT
219 // Forward declaration
220 void TestReservedSpace_test();
221 void TestReserveMemorySpecial_test();
222 void TestVirtualSpace_test();
223 void TestMetaspaceUtils_test();
224 #endif
225
226 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
227 #ifndef PRODUCT
228 TestReservedSpace_test();
229 TestReserveMemorySpecial_test();
230 TestVirtualSpace_test();
231 TestMetaspaceUtils_test();
232 #endif
233 WB_END
234
235 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
236 size_t granularity = os::vm_allocation_granularity();
237 ReservedHeapSpace rhs(100 * granularity, granularity, false);
238 VirtualSpace vs;
239 vs.initialize(rhs, 50 * granularity);
240
241 // Check if constraints are complied
242 if (!( UseCompressedOops && rhs.base() != NULL &&
243 Universe::narrow_oop_base() != NULL &&
244 Universe::narrow_oop_use_implicit_null_checks() )) {
245 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
246 "\tUseCompressedOops is %d\n"
247 "\trhs.base() is " PTR_FORMAT "\n"
248 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
249 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
250 UseCompressedOops,
251 p2i(rhs.base()),
252 p2i(Universe::narrow_oop_base()),
253 Universe::narrow_oop_use_implicit_null_checks());
254 return;
255 }
256 tty->print_cr("Reading from no access area... ");
257 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
258 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
259 WB_END
260
261 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
262 size_t magnitude, size_t iterations) {
263 size_t granularity = os::vm_allocation_granularity();
264 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
265 VirtualSpace vs;
266 if (!vs.initialize(rhs, 0)) {
267 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
268 return 3;
269 }
270
271 int seed = os::random();
272 tty->print_cr("Random seed is %d", seed);
273 os::init_random(seed);
274
275 for (size_t i = 0; i < iterations; i++) {
276
277 // Whether we will shrink or grow
278 bool shrink = os::random() % 2L == 0;
279
280 // Get random delta to resize virtual space
281 size_t delta = (size_t)os::random() % magnitude;
282
283 // If we are about to shrink virtual space below zero, then expand instead
284 if (shrink && vs.committed_size() < delta) {
285 shrink = false;
286 }
287
288 // Resizing by delta
289 if (shrink) {
290 vs.shrink_by(delta);
291 } else {
292 // If expanding fails expand_by will silently return false
293 vs.expand_by(delta, true);
294 }
295 }
296 return 0;
297 }
298
299 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
300 jlong reserved_space_size, jlong magnitude, jlong iterations))
301 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
302 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
303 iterations);
304 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
305 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
306 return 1;
307 }
308
309 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
310 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
311 if (sizeof(size_t) < sizeof(jlong)) {
312 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
313 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
314 || iterations > size_t_max_value) {
315 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
316 return 2;
317 }
318 }
319
320 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
321 (size_t) magnitude, (size_t) iterations);
322 WB_END
323
324 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
325 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
326 WB_END
327
328 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
329 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
330 WB_END
331
332 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
333 return GCConfig::is_gc_selected_ergonomically();
334 WB_END
335
336 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
337 oop p = JNIHandles::resolve(obj);
338 #if INCLUDE_G1GC
339 if (UseG1GC) {
340 G1CollectedHeap* g1h = G1CollectedHeap::heap();
341 const HeapRegion* hr = g1h->heap_region_containing(p);
342 if (hr == NULL) {
343 return false;
344 }
345 return !(hr->is_young());
346 }
347 #endif
348 #if INCLUDE_PARALLELGC
349 if (UseParallelGC) {
350 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
351 return !psh->is_in_young(p);
352 }
353 #endif
354 #if INCLUDE_ZGC
355 if (UseZGC) {
356 return Universe::heap()->is_in(p);
357 }
358 #endif
359 GenCollectedHeap* gch = GenCollectedHeap::heap();
360 return !gch->is_in_young(p);
361 WB_END
362
363 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
364 oop p = JNIHandles::resolve(obj);
365 return p->size() * HeapWordSize;
366 WB_END
367
368 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
369 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
370 return (jlong)alignment;
371 WB_END
372
373 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
374 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
375 return (jlong)alignment;
376 WB_END
377
378 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
379 return Universe::heap()->supports_concurrent_phase_control();
380 WB_END
381
382 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
383 const char* const* phases = Universe::heap()->concurrent_phases();
384 jint nphases = 0;
385 for ( ; phases[nphases] != NULL; ++nphases) ;
386
387 ResourceMark rm(thread);
388 ThreadToNativeFromVM ttn(thread);
389 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
390 CHECK_JNI_EXCEPTION_(env, NULL);
391
392 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
393 CHECK_JNI_EXCEPTION_(env, NULL);
394
395 // If push fails, return with pending exception.
396 if (env->PushLocalFrame(nphases) < 0) return NULL;
397 for (jint i = 0; i < nphases; ++i) {
398 jstring phase = env->NewStringUTF(phases[i]);
399 CHECK_JNI_EXCEPTION_(env, NULL);
400 env->SetObjectArrayElement(result, i, phase);
401 CHECK_JNI_EXCEPTION_(env, NULL);
402 }
403 env->PopLocalFrame(NULL);
404
405 return result;
406 WB_END
407
408 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
409 Handle h_name(THREAD, JNIHandles::resolve(name));
410 ResourceMark rm;
411 const char* c_name = java_lang_String::as_utf8_string(h_name());
412 return Universe::heap()->request_concurrent_phase(c_name);
413 WB_END
414
415 #if INCLUDE_G1GC
416
417 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
418 if (UseG1GC) {
419 G1CollectedHeap* g1h = G1CollectedHeap::heap();
420 oop result = JNIHandles::resolve(obj);
421 const HeapRegion* hr = g1h->heap_region_containing(result);
422 return hr->is_humongous();
423 }
424 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
425 WB_END
426
427 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
428 if (UseG1GC) {
429 G1CollectedHeap* g1h = G1CollectedHeap::heap();
430 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
431 return hr->is_humongous();
432 }
433 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
434 WB_END
435
436 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
437 if (UseG1GC) {
438 G1CollectedHeap* g1h = G1CollectedHeap::heap();
439 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
440 return hr->is_free();
441 }
442 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
443 WB_END
444
445 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
446 if (UseG1GC) {
447 G1CollectedHeap* g1h = G1CollectedHeap::heap();
448 size_t nr = g1h->max_regions();
449 return (jlong)nr;
450 }
451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
452 WB_END
453
454 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
455 if (UseG1GC) {
456 G1CollectedHeap* g1h = G1CollectedHeap::heap();
457 size_t nr = g1h->num_free_regions();
458 return (jlong)nr;
459 }
460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
461 WB_END
462
463 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
464 if (UseG1GC) {
465 G1CollectedHeap* g1h = G1CollectedHeap::heap();
466 return g1h->concurrent_mark()->cm_thread()->during_cycle();
467 }
468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
469 WB_END
470
471 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
472 if (UseG1GC) {
473 G1CollectedHeap* g1h = G1CollectedHeap::heap();
474 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
475 g1h->collect(GCCause::_wb_conc_mark);
476 return true;
477 }
478 return false;
479 }
480 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
481 WB_END
482
483 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
484 if (UseG1GC) {
485 return (jint)HeapRegion::GrainBytes;
486 }
487 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
488 WB_END
489
490 #endif // INCLUDE_G1GC
491
492 #if INCLUDE_PARALLELGC
493
494 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
495 if (UseParallelGC) {
496 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
497 }
498 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
499 WB_END
500
501 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
502 if (UseParallelGC) {
503 return ParallelScavengeHeap::heap()->generation_alignment();
504 }
505 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
506 WB_END
507
508 #endif // INCLUDE_PARALLELGC
509
510 #if INCLUDE_G1GC
511
512 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
513 if (UseG1GC) {
514 ResourceMark rm(THREAD);
515 G1CollectedHeap* g1h = G1CollectedHeap::heap();
516 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
517 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
518 return JNIHandles::make_local(env, h());
519 }
520 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
521 WB_END
522
523 class OldRegionsLivenessClosure: public HeapRegionClosure {
524
525 private:
526 const int _liveness;
527 size_t _total_count;
528 size_t _total_memory;
529 size_t _total_memory_to_free;
530
531 public:
532 OldRegionsLivenessClosure(int liveness) :
533 _liveness(liveness),
534 _total_count(0),
535 _total_memory(0),
536 _total_memory_to_free(0) { }
537
538 size_t total_count() { return _total_count; }
539 size_t total_memory() { return _total_memory; }
540 size_t total_memory_to_free() { return _total_memory_to_free; }
541
542 bool do_heap_region(HeapRegion* r) {
543 if (r->is_old()) {
544 size_t prev_live = r->marked_bytes();
545 size_t live = r->live_bytes();
546 size_t size = r->used();
547 size_t reg_size = HeapRegion::GrainBytes;
548 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
549 _total_memory += size;
550 ++_total_count;
551 if (size == reg_size) {
552 // we don't include non-full regions since they are unlikely included in mixed gc
553 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
554 _total_memory_to_free += size - prev_live;
555 }
556 }
557 }
558 return false;
559 }
560 };
561
562
563 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
564 if (!UseG1GC) {
565 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
566 }
567 if (liveness < 0) {
568 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
569 }
570
571 G1CollectedHeap* g1h = G1CollectedHeap::heap();
572 OldRegionsLivenessClosure rli(liveness);
573 g1h->heap_region_iterate(&rli);
574
575 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
576 result->long_at_put(0, rli.total_count());
577 result->long_at_put(1, rli.total_memory());
578 result->long_at_put(2, rli.total_memory_to_free());
579 return (jlongArray) JNIHandles::make_local(env, result);
580 WB_END
581
582 #endif // INCLUDE_G1GC
583
584 #if INCLUDE_NMT
585 // Alloc memory using the test memory type so that we can use that to see if
586 // NMT picks it up correctly
587 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
588 jlong addr = 0;
589 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
590 return addr;
591 WB_END
592
593 // Alloc memory with pseudo call stack. The test can create psudo malloc
594 // allocation site to stress the malloc tracking.
595 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
596 address pc = (address)(size_t)pseudo_stack;
597 NativeCallStack stack(&pc, 1);
598 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
599 WB_END
600
601 // Free the memory allocated by NMTAllocTest
602 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
603 os::free((void*)(uintptr_t)mem);
604 WB_END
605
606 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
607 jlong addr = 0;
608
609 addr = (jlong)(uintptr_t)os::reserve_memory(size);
610 MemTracker::record_virtual_memory_type((address)addr, mtTest);
611
612 return addr;
613 WB_END
614
615 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
616 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
617 MemTracker::record_virtual_memory_type((address)addr, mtTest);
618
619 return addr;
620 WB_END
621
622 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
623 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
624 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
625 WB_END
626
627 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
628 os::uncommit_memory((char *)(uintptr_t)addr, size);
629 WB_END
630
631 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
632 os::release_memory((char *)(uintptr_t)addr, size);
633 WB_END
634
635 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
636 // Test that we can downgrade NMT levels but not upgrade them.
637 if (MemTracker::tracking_level() == NMT_off) {
638 MemTracker::transition_to(NMT_off);
639 return MemTracker::tracking_level() == NMT_off;
640 } else {
641 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
642 MemTracker::transition_to(NMT_summary);
643 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
644
645 // Can't go to detail once NMT is set to summary.
646 MemTracker::transition_to(NMT_detail);
647 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
648
649 // Shutdown sets tracking level to minimal.
650 MemTracker::shutdown();
651 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
652
653 // Once the tracking level is minimal, we cannot increase to summary.
654 // The code ignores this request instead of asserting because if the malloc site
655 // table overflows in another thread, it tries to change the code to summary.
656 MemTracker::transition_to(NMT_summary);
657 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
658
659 // Really can never go up to detail, verify that the code would never do this.
660 MemTracker::transition_to(NMT_detail);
661 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
662 return MemTracker::tracking_level() == NMT_minimal;
663 }
664 WB_END
665
666 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
667 int hash_size = MallocSiteTable::hash_buckets();
668 assert(hash_size > 0, "NMT hash_size should be > 0");
669 return (jint)hash_size;
670 WB_END
671 #endif // INCLUDE_NMT
672
673 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
674 assert(method != NULL, "method should not be null");
675 ThreadToNativeFromVM ttn(thread);
676 return env->FromReflectedMethod(method);
677 }
678
679 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
680 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
681 private:
682 int _result;
683 const bool _make_not_entrant;
684 public:
685 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
686 _result(0), _make_not_entrant(make_not_entrant) { }
687 int result() const { return _result; }
688
689 void doit() {
690 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
691 if (t->has_last_Java_frame()) {
692 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
693 frame* f = fst.current();
694 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
695 RegisterMap* reg_map = fst.register_map();
696 Deoptimization::deoptimize(t, *f, reg_map);
697 if (_make_not_entrant) {
698 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
699 assert(cm != NULL, "sanity check");
700 cm->make_not_entrant();
701 }
702 ++_result;
703 }
704 }
705 }
706 }
707 }
708 };
709
710 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
711 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
712 VMThread::execute(&op);
713 return op.result();
714 WB_END
715
716 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
717 MutexLockerEx mu(Compile_lock);
718 CodeCache::mark_all_nmethods_for_deoptimization();
719 VM_Deoptimize op;
720 VMThread::execute(&op);
721 WB_END
722
723 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
724 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
725 int result = 0;
726 CHECK_JNI_EXCEPTION_(env, result);
727 MutexLockerEx mu(Compile_lock);
728 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
729 if (is_osr) {
730 result += mh->mark_osr_nmethods();
731 } else if (mh->code() != NULL) {
732 mh->code()->mark_for_deoptimization();
733 ++result;
734 }
735 result += CodeCache::mark_for_deoptimization(mh());
736 if (result > 0) {
737 VM_Deoptimize op;
738 VMThread::execute(&op);
739 }
740 return result;
741 WB_END
742
743 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
744 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
745 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
746 MutexLockerEx mu(Compile_lock);
747 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
748 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
749 if (code == NULL) {
750 return JNI_FALSE;
751 }
752 return (code->is_alive() && !code->is_marked_for_deoptimization());
753 WB_END
754
755 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
756 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
757 return false;
758 }
759 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
760 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
761 MutexLockerEx mu(Compile_lock);
762 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
763 if (is_osr) {
764 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
765 } else {
766 return CompilationPolicy::can_be_compiled(mh, comp_level);
767 }
768 WB_END
769
770 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
771 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
772 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
773 MutexLockerEx mu(Compile_lock);
774 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
775 return mh->queued_for_compilation();
776 WB_END
777
778 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
779 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
780 return false; // Intrinsic is not available on a non-existent compilation level.
781 }
782 jmethodID method_id, compilation_context_id;
783 method_id = reflected_method_to_jmid(thread, env, method);
784 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
785 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
786
787 DirectiveSet* directive;
788 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
789 assert(comp != NULL, "compiler not available");
790 if (compilation_context != NULL) {
791 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
792 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
793 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
794 directive = DirectivesStack::getMatchingDirective(cch, comp);
795 } else {
796 // Calling with NULL matches default directive
797 directive = DirectivesStack::getDefaultDirective(comp);
798 }
799 bool result = comp->is_intrinsic_available(mh, directive);
800 DirectivesStack::release(directive);
801 return result;
802 WB_END
803
804 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
805 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
806 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
807 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
808 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
809 return (code != NULL ? code->comp_level() : CompLevel_none);
810 WB_END
811
812 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
813 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
814 CHECK_JNI_EXCEPTION(env);
815 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
816 if (is_osr) {
817 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
818 } else {
819 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
820 }
821 WB_END
822
823 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
825 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
827 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
828 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
829 WB_END
830
831 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
832 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
833 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
834 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
835 bool result = mh->dont_inline();
836 mh->set_dont_inline(value == JNI_TRUE);
837 return result;
838 WB_END
839
840 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
841 if (comp_level == CompLevel_any) {
842 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
843 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
844 } else {
845 return CompileBroker::queue_size(comp_level);
846 }
847 WB_END
848
849 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
850 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
851 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
852 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
853 bool result = mh->force_inline();
854 mh->set_force_inline(value == JNI_TRUE);
855 return result;
856 WB_END
857
858 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
859 // Screen for unavailable/bad comp level or null method
860 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
861 if (method == NULL) {
862 tty->print_cr("WB error: request to compile NULL method");
863 return false;
864 }
865 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
866 tty->print_cr("WB error: invalid compilation level %d", comp_level);
867 return false;
868 }
869 if (comp == NULL) {
870 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
871 return false;
872 }
873
874 // Check if compilation is blocking
875 methodHandle mh(THREAD, method);
876 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
877 bool is_blocking = !directive->BackgroundCompilationOption;
878 DirectivesStack::release(directive);
879
880 // Compile method and check result
881 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
882 MutexLockerEx mu(Compile_lock);
883 bool is_queued = mh->queued_for_compilation();
884 if ((!is_blocking && is_queued) || nm != NULL) {
885 return true;
886 }
887 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
888 mh->print_short_name(tty);
889 tty->cr();
890 if (is_blocking && is_queued) {
891 tty->print_cr("WB error: blocking compilation is still in queue!");
892 }
893 return false;
894 }
895
896 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
897 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
898 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
899 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
900 WB_END
901
902 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
903 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
904 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
905 WB_END
906
907 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
908 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
909 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
910
911 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
912 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
913 bool result = directive->PrintAssemblyOption;
914 DirectivesStack::release(directive);
915
916 return result;
917 WB_END
918
919 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
920 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
921 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
922
923 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
924
925 ResourceMark rm;
926 const char* error_msg = NULL;
927 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
928 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
929
930 if (m == NULL) {
931 assert(error_msg != NULL, "Always have an error message");
932 tty->print_cr("Got error: %s", error_msg);
933 return -1; // Pattern failed
934 }
935
936 // Pattern works - now check if it matches
937 int result;
938 if (m->match(mh, InlineMatcher::force_inline)) {
939 result = 2; // Force inline match
940 } else if (m->match(mh, InlineMatcher::dont_inline)) {
941 result = 1; // Dont inline match
942 } else {
943 result = 0; // No match
944 }
945 delete m;
946 return result;
947 WB_END
948
949 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
950 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
951 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
952
953 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
954
955 ResourceMark rm;
956 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
957
958 const char* error_msg = NULL;
959
960 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
961 if (m == NULL) {
962 assert(error_msg != NULL, "Must have error_msg");
963 tty->print_cr("Got error: %s", error_msg);
964 return -1;
965 }
966
967 // Pattern works - now check if it matches
968 int result = m->matches(mh);
969 delete m;
970 assert(result == 0 || result == 1, "Result out of range");
971 return result;
972 WB_END
973
974 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
975 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
976 CHECK_JNI_EXCEPTION(env);
977 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
978 MutexLockerEx mu(Compile_lock);
979 MethodData* mdo = mh->method_data();
980 MethodCounters* mcs = mh->method_counters();
981
982 if (mdo != NULL) {
983 mdo->init();
984 ResourceMark rm;
985 int arg_count = mdo->method()->size_of_parameters();
986 for (int i = 0; i < arg_count; i++) {
987 mdo->set_arg_modified(i, 0);
988 }
989 MutexLockerEx mu(mdo->extra_data_lock());
990 mdo->clean_method_data(/*always_clean*/true);
991 }
992
993 mh->clear_not_c1_compilable();
994 mh->clear_not_c2_compilable();
995 mh->clear_not_c2_osr_compilable();
996 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
997 if (mcs != NULL) {
998 mcs->backedge_counter()->init();
999 mcs->invocation_counter()->init();
1000 mcs->set_interpreter_invocation_count(0);
1001 mcs->set_interpreter_throwout_count(0);
1002
1003 #ifdef TIERED
1004 mcs->set_rate(0.0F);
1005 mh->set_prev_event_count(0);
1006 mh->set_prev_time(0);
1007 #endif
1008 }
1009 WB_END
1010
1011 template <typename T>
1012 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1013 if (name == NULL) {
1014 return false;
1015 }
1016 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1017 const char* flag_name = env->GetStringUTFChars(name, NULL);
1018 CHECK_JNI_EXCEPTION_(env, false);
1019 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1020 env->ReleaseStringUTFChars(name, flag_name);
1021 return (result == JVMFlag::SUCCESS);
1022 }
1023
1024 template <typename T>
1025 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1026 if (name == NULL) {
1027 return false;
1028 }
1029 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1030 const char* flag_name = env->GetStringUTFChars(name, NULL);
1031 CHECK_JNI_EXCEPTION_(env, false);
1032 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1033 env->ReleaseStringUTFChars(name, flag_name);
1034 return (result == JVMFlag::SUCCESS);
1035 }
1036
1037 template <typename T>
1038 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1039 ResourceMark rm(thread);
1040 jclass clazz = env->FindClass(name->as_C_string());
1041 CHECK_JNI_EXCEPTION_(env, NULL);
1042 jmethodID methodID = env->GetStaticMethodID(clazz,
1043 vmSymbols::valueOf_name()->as_C_string(),
1044 sig->as_C_string());
1045 CHECK_JNI_EXCEPTION_(env, NULL);
1046 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1047 CHECK_JNI_EXCEPTION_(env, NULL);
1048 return result;
1049 }
1050
1051 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1052 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1053 }
1054 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1055 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1056 }
1057 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1058 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1059 }
1060 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1061 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1062 }*/
1063 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1064 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1065 }
1066
1067 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1068 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1069 const char* flag_name = env->GetStringUTFChars(name, NULL);
1070 CHECK_JNI_EXCEPTION_(env, NULL);
1071 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1072 env->ReleaseStringUTFChars(name, flag_name);
1073 return result;
1074 }
1075
1076 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1077 JVMFlag* flag = getVMFlag(thread, env, name);
1078 return (flag != NULL) && flag->is_constant_in_binary();
1079 WB_END
1080
1081 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1082 JVMFlag* flag = getVMFlag(thread, env, name);
1083 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1084 WB_END
1085
1086 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1087 bool result;
1088 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1089 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1090 return booleanBox(thread, env, result);
1091 }
1092 return NULL;
1093 WB_END
1094
1095 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1096 int result;
1097 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1098 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1099 return longBox(thread, env, result);
1100 }
1101 return NULL;
1102 WB_END
1103
1104 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1105 uint result;
1106 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1107 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1108 return longBox(thread, env, result);
1109 }
1110 return NULL;
1111 WB_END
1112
1113 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1114 intx result;
1115 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1117 return longBox(thread, env, result);
1118 }
1119 return NULL;
1120 WB_END
1121
1122 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1123 uintx result;
1124 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1126 return longBox(thread, env, result);
1127 }
1128 return NULL;
1129 WB_END
1130
1131 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1132 uint64_t result;
1133 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1134 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1135 return longBox(thread, env, result);
1136 }
1137 return NULL;
1138 WB_END
1139
1140 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1141 size_t result;
1142 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1143 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1144 return longBox(thread, env, result);
1145 }
1146 return NULL;
1147 WB_END
1148
1149 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1150 double result;
1151 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1152 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1153 return doubleBox(thread, env, result);
1154 }
1155 return NULL;
1156 WB_END
1157
1158 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1159 ccstr ccstrResult;
1160 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1161 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1162 jstring result = env->NewStringUTF(ccstrResult);
1163 CHECK_JNI_EXCEPTION_(env, NULL);
1164 return result;
1165 }
1166 return NULL;
1167 WB_END
1168
1169 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1170 bool result = value == JNI_TRUE ? true : false;
1171 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1172 WB_END
1173
1174 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1175 int result = value;
1176 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1177 WB_END
1178
1179 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1180 uint result = value;
1181 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1182 WB_END
1183
1184 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1185 intx result = value;
1186 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1187 WB_END
1188
1189 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1190 uintx result = value;
1191 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1192 WB_END
1193
1194 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1195 uint64_t result = value;
1196 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1197 WB_END
1198
1199 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1200 size_t result = value;
1201 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1202 WB_END
1203
1204 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1205 double result = value;
1206 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1207 WB_END
1208
1209 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1210 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1211 const char* ccstrValue;
1212 if (value == NULL) {
1213 ccstrValue = NULL;
1214 }
1215 else {
1216 ccstrValue = env->GetStringUTFChars(value, NULL);
1217 CHECK_JNI_EXCEPTION(env);
1218 }
1219 ccstr ccstrResult = ccstrValue;
1220 bool needFree;
1221 {
1222 ThreadInVMfromNative ttvfn(thread); // back to VM
1223 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1224 }
1225 if (value != NULL) {
1226 env->ReleaseStringUTFChars(value, ccstrValue);
1227 }
1228 if (needFree) {
1229 FREE_C_HEAP_ARRAY(char, ccstrResult);
1230 }
1231 WB_END
1232
1233 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1234 WhiteBox::compilation_locked = true;
1235 WB_END
1236
1237 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1238 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1239 WhiteBox::compilation_locked = false;
1240 mo.notify_all();
1241 WB_END
1242
1243 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1244 // Force a code cache sweep and block until it finished
1245 NMethodSweeper::force_sweep();
1246 WB_END
1247
1248 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1249 ResourceMark rm(THREAD);
1250 int len;
1251 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1252 return (StringTable::lookup(name, len) != NULL);
1253 WB_END
1254
1255 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1256 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1257 Universe::heap()->collect(GCCause::_wb_full_gc);
1258 #if INCLUDE_G1GC
1259 if (UseG1GC) {
1260 // Needs to be cleared explicitly for G1
1261 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1262 }
1263 #endif // INCLUDE_G1GC
1264 WB_END
1265
1266 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1267 Universe::heap()->collect(GCCause::_wb_young_gc);
1268 WB_END
1269
1270 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1271 // static+volatile in order to force the read to happen
1272 // (not be eliminated by the compiler)
1273 static char c;
1274 static volatile char* p;
1275
1276 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1277 if (p == NULL) {
1278 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1279 }
1280
1281 c = *p;
1282 WB_END
1283
1284 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1285 const char* features = VM_Version::features_string();
1286 ThreadToNativeFromVM ttn(thread);
1287 jstring features_string = env->NewStringUTF(features);
1288
1289 CHECK_JNI_EXCEPTION_(env, NULL);
1290
1291 return features_string;
1292 WB_END
1293
1294 int WhiteBox::get_blob_type(const CodeBlob* code) {
1295 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1296 if (code->is_aot()) {
1297 return -1;
1298 }
1299 return CodeCache::get_code_heap(code)->code_blob_type();
1300 }
1301
1302 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1303 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1304 return CodeCache::get_code_heap(blob_type);
1305 }
1306
1307 struct CodeBlobStub {
1308 CodeBlobStub(const CodeBlob* blob) :
1309 name(os::strdup(blob->name())),
1310 size(blob->size()),
1311 blob_type(WhiteBox::get_blob_type(blob)),
1312 address((jlong) blob) { }
1313 ~CodeBlobStub() { os::free((void*) name); }
1314 const char* const name;
1315 const jint size;
1316 const jint blob_type;
1317 const jlong address;
1318 };
1319
1320 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1321 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1322 CHECK_JNI_EXCEPTION_(env, NULL);
1323 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1324
1325 jstring name = env->NewStringUTF(cb->name);
1326 CHECK_JNI_EXCEPTION_(env, NULL);
1327 env->SetObjectArrayElement(result, 0, name);
1328
1329 jobject obj = integerBox(thread, env, cb->size);
1330 CHECK_JNI_EXCEPTION_(env, NULL);
1331 env->SetObjectArrayElement(result, 1, obj);
1332
1333 obj = integerBox(thread, env, cb->blob_type);
1334 CHECK_JNI_EXCEPTION_(env, NULL);
1335 env->SetObjectArrayElement(result, 2, obj);
1336
1337 obj = longBox(thread, env, cb->address);
1338 CHECK_JNI_EXCEPTION_(env, NULL);
1339 env->SetObjectArrayElement(result, 3, obj);
1340
1341 return result;
1342 }
1343
1344 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1345 ResourceMark rm(THREAD);
1346 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1347 CHECK_JNI_EXCEPTION_(env, NULL);
1348 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1349 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1350 jobjectArray result = NULL;
1351 if (code == NULL) {
1352 return result;
1353 }
1354 int comp_level = code->comp_level();
1355 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1356
1357 ThreadToNativeFromVM ttn(thread);
1358 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1359 CHECK_JNI_EXCEPTION_(env, NULL);
1360 result = env->NewObjectArray(5, clazz, NULL);
1361 if (result == NULL) {
1362 return result;
1363 }
1364
1365 CodeBlobStub stub(code);
1366 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1367 CHECK_JNI_EXCEPTION_(env, NULL);
1368 env->SetObjectArrayElement(result, 0, codeBlob);
1369
1370 jobject level = integerBox(thread, env, comp_level);
1371 CHECK_JNI_EXCEPTION_(env, NULL);
1372 env->SetObjectArrayElement(result, 1, level);
1373
1374 jbyteArray insts = env->NewByteArray(insts_size);
1375 CHECK_JNI_EXCEPTION_(env, NULL);
1376 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1377 env->SetObjectArrayElement(result, 2, insts);
1378
1379 jobject id = integerBox(thread, env, code->compile_id());
1380 CHECK_JNI_EXCEPTION_(env, NULL);
1381 env->SetObjectArrayElement(result, 3, id);
1382
1383 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1384 CHECK_JNI_EXCEPTION_(env, NULL);
1385 env->SetObjectArrayElement(result, 4, entry_point);
1386
1387 return result;
1388 WB_END
1389
1390 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1391 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1392 BufferBlob* blob;
1393 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1394 if (full_size < size) {
1395 full_size += align_up(size - full_size, oopSize);
1396 }
1397 {
1398 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1399 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1400 if (blob != NULL) {
1401 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1402 }
1403 }
1404 // Track memory usage statistic after releasing CodeCache_lock
1405 MemoryService::track_code_cache_memory_usage();
1406 return blob;
1407 }
1408
1409 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1410 if (size < 0) {
1411 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1412 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1413 }
1414 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1415 WB_END
1416
1417 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1418 if (addr == 0) {
1419 return;
1420 }
1421 BufferBlob::free((BufferBlob*) addr);
1422 WB_END
1423
1424 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1425 ResourceMark rm;
1426 GrowableArray<CodeBlobStub*> blobs;
1427 {
1428 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1429 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1430 if (heap == NULL) {
1431 return NULL;
1432 }
1433 for (CodeBlob* cb = (CodeBlob*) heap->first();
1434 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1435 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1436 new (stub) CodeBlobStub(cb);
1437 blobs.append(stub);
1438 }
1439 }
1440 if (blobs.length() == 0) {
1441 return NULL;
1442 }
1443 ThreadToNativeFromVM ttn(thread);
1444 jobjectArray result = NULL;
1445 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1446 CHECK_JNI_EXCEPTION_(env, NULL);
1447 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1448 CHECK_JNI_EXCEPTION_(env, NULL);
1449 if (result == NULL) {
1450 return result;
1451 }
1452 int i = 0;
1453 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1454 it != blobs.end(); ++it) {
1455 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1456 CHECK_JNI_EXCEPTION_(env, NULL);
1457 env->SetObjectArrayElement(result, i, obj);
1458 CHECK_JNI_EXCEPTION_(env, NULL);
1459 ++i;
1460 }
1461 return result;
1462 WB_END
1463
1464 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1465 return CompileBroker::get_compilation_activity_mode();
1466 WB_END
1467
1468 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1469 if (addr == 0) {
1470 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1471 "WB_GetCodeBlob: addr is null");
1472 }
1473 ThreadToNativeFromVM ttn(thread);
1474 CodeBlobStub stub((CodeBlob*) addr);
1475 return codeBlob2objectArray(thread, env, &stub);
1476 WB_END
1477
1478 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1479 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1480 CHECK_JNI_EXCEPTION_(env, 0);
1481 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1482 return (jlong) mh->method_data();
1483 WB_END
1484
1485 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1486 return (jlong) Thread::current()->stack_size();
1487 WB_END
1488
1489 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1490 JavaThread* t = JavaThread::current();
1491 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1492 WB_END
1493
1494
1495 int WhiteBox::array_bytes_to_length(size_t bytes) {
1496 return Array<u1>::bytes_to_length(bytes);
1497 }
1498
1499 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1500 if (size < 0) {
1501 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1502 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1503 }
1504
1505 oop class_loader_oop = JNIHandles::resolve(class_loader);
1506 ClassLoaderData* cld = class_loader_oop != NULL
1507 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1508 : ClassLoaderData::the_null_class_loader_data();
1509
1510 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1511
1512 return (jlong)(uintptr_t)metadata;
1513 WB_END
1514
1515 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1516 oop class_loader_oop = JNIHandles::resolve(class_loader);
1517 ClassLoaderData* cld = class_loader_oop != NULL
1518 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1519 : ClassLoaderData::the_null_class_loader_data();
1520
1521 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1522 WB_END
1523
1524 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1525 jstring version, jstring location, jobjectArray packages))
1526 ResourceMark rm(THREAD);
1527
1528 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1529 objArrayHandle packages_h(THREAD, packages_oop);
1530 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1531
1532 char** pkgs = NULL;
1533 if (num_packages > 0) {
1534 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1535 for (int x = 0; x < num_packages; x++) {
1536 oop pkg_str = packages_h->obj_at(x);
1537 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1538 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1539 err_msg("Bad package name"));
1540 }
1541 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1542 }
1543 }
1544 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1545 WB_END
1546
1547 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1548 ResourceMark rm(THREAD);
1549 char* package_name = NULL;
1550 if (package != NULL) {
1551 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1552 }
1553 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1554 WB_END
1555
1556 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1557 ResourceMark rm(THREAD);
1558 char* package_name = NULL;
1559 if (package != NULL) {
1560 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1561 }
1562 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1563 WB_END
1564
1565 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1566 ResourceMark rm(THREAD);
1567 char* package_name = NULL;
1568 if (package != NULL) {
1569 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1570 }
1571 Modules::add_module_exports(module, package_name, NULL, CHECK);
1572 WB_END
1573
1574 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1575 Modules::add_reads_module(from_module, source_module, CHECK);
1576 WB_END
1577
1578 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1579 if (inc < 0) {
1580 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1581 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1582 }
1583
1584 jlong max_size_t = (jlong) ((size_t) -1);
1585 if (inc > max_size_t) {
1586 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1587 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1588 }
1589
1590 size_t new_cap_until_GC = 0;
1591 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1592 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1593 if (!success) {
1594 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1595 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1596 "due to contention with another thread");
1597 }
1598 return (jlong) new_cap_until_GC;
1599 WB_END
1600
1601 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1602 return (jlong) MetaspaceGC::capacity_until_GC();
1603 WB_END
1604
1605 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1606 return MetaspaceGC::should_concurrent_collect();
1607 WB_END
1608
1609 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1610 return (jlong)Metaspace::reserve_alignment();
1611 WB_END
1612
1613 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1614 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1615 Monitor::_safepoint_check_always :
1616 Monitor::_safepoint_check_never;
1617 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1618 attemptedNoSafepointValue == JNI_TRUE);
1619 WB_END
1620
1621 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1622 oop obj_oop = JNIHandles::resolve(obj);
1623 return (jboolean) obj_oop->mark()->has_monitor();
1624 WB_END
1625
1626 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1627 VM_ForceSafepoint force_safepoint_op;
1628 VMThread::execute(&force_safepoint_op);
1629 WB_END
1630
1631 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1632 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1633 return (jlong) ik->constants();
1634 WB_END
1635
1636 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1637 return ConstantPool::CPCACHE_INDEX_TAG;
1638 WB_END
1639
1640 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1641 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1642 ConstantPool* cp = ik->constants();
1643 if (cp->cache() == NULL) {
1644 return -1;
1645 }
1646 return cp->cache()->length();
1647 WB_END
1648
1649 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1650 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1651 ConstantPool* cp = ik->constants();
1652 if (cp->cache() == NULL) {
1653 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1654 }
1655 jint cpci = index;
1656 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1657 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1658 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1659 }
1660 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1661 return cpi;
1662 WB_END
1663
1664 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1665 return ConstantPool::encode_invokedynamic_index(index);
1666 WB_END
1667
1668 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1669 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1670 VMThread::execute(&clear_ics);
1671 WB_END
1672
1673 template <typename T>
1674 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1675 assert(value != NULL, "sanity");
1676 if (method == NULL || name == NULL) {
1677 return false;
1678 }
1679 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1680 CHECK_JNI_EXCEPTION_(env, false);
1681 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1682 // can't be in VM when we call JNI
1683 ThreadToNativeFromVM ttnfv(thread);
1684 const char* flag_name = env->GetStringUTFChars(name, NULL);
1685 CHECK_JNI_EXCEPTION_(env, false);
1686 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1687 env->ReleaseStringUTFChars(name, flag_name);
1688 return result;
1689 }
1690
1691 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1692 bool result;
1693 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1694 // can't be in VM when we call JNI
1695 ThreadToNativeFromVM ttnfv(thread);
1696 return booleanBox(thread, env, result);
1697 }
1698 return NULL;
1699 WB_END
1700
1701 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1702 intx result;
1703 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1704 // can't be in VM when we call JNI
1705 ThreadToNativeFromVM ttnfv(thread);
1706 return longBox(thread, env, result);
1707 }
1708 return NULL;
1709 WB_END
1710
1711 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1712 uintx result;
1713 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1714 // can't be in VM when we call JNI
1715 ThreadToNativeFromVM ttnfv(thread);
1716 return longBox(thread, env, result);
1717 }
1718 return NULL;
1719 WB_END
1720
1721 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1722 double result;
1723 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1724 // can't be in VM when we call JNI
1725 ThreadToNativeFromVM ttnfv(thread);
1726 return doubleBox(thread, env, result);
1727 }
1728 return NULL;
1729 WB_END
1730
1731 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1732 ccstr ccstrResult;
1733 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1734 // can't be in VM when we call JNI
1735 ThreadToNativeFromVM ttnfv(thread);
1736 jstring result = env->NewStringUTF(ccstrResult);
1737 CHECK_JNI_EXCEPTION_(env, NULL);
1738 return result;
1739 }
1740 return NULL;
1741 WB_END
1742
1743 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1744 oop obj_oop = JNIHandles::resolve(obj);
1745 return MetaspaceShared::is_archive_object(obj_oop);
1746 WB_END
1747
1748 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1749 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1750 WB_END
1751
1752 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1753 return !StringTable::shared_string_mapped();
1754 WB_END
1755
1756 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1757 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1758 if (k->is_instance_klass()) {
1759 InstanceKlass *ik = InstanceKlass::cast(k);
1760 ConstantPool *cp = ik->constants();
1761 objArrayOop refs = cp->resolved_references();
1762 return (jobject)JNIHandles::make_local(env, refs);
1763 } else {
1764 return NULL;
1765 }
1766 WB_END
1767
1768 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1769 return MetaspaceShared::open_archive_heap_region_mapped();
1770 WB_END
1771
1772 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1773 #if INCLUDE_CDS
1774 # ifdef _LP64
1775 if (!UseCompressedOops || !UseCompressedClassPointers) {
1776 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1777 return false;
1778 }
1779 # endif // _LP64
1780 return true;
1781 #else
1782 return false;
1783 #endif // INCLUDE_CDS
1784 WB_END
1785
1786 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1787 return MetaspaceShared::is_heap_object_archiving_allowed();
1788 WB_END
1789
1790
1791 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1792 #if INCLUDE_JFR
1793 return true;
1794 #else
1795 return false;
1796 #endif // INCLUDE_JFR
1797 WB_END
1798
1799 #if INCLUDE_CDS
1800
1801 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1802 ResourceMark rm;
1803 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1804 int result = CDSOffsets::find_offset(c_name);
1805 return (jint)result;
1806 WB_END
1807
1808 #endif // INCLUDE_CDS
1809
1810 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1811 class TraceSelfClosure : public ThreadClosure {
1812 jint _num_threads_completed;
1813
1814 void do_thread(Thread* th) {
1815 assert(th->is_Java_thread(), "sanity");
1816 JavaThread* jt = (JavaThread*)th;
1817 ResourceMark rm;
1818
1819 jt->print_on(tty);
1820 jt->print_stack_on(tty);
1821 tty->cr();
1822 Atomic::inc(&_num_threads_completed);
1823 }
1824
1825 public:
1826 TraceSelfClosure() : _num_threads_completed(0) {}
1827
1828 jint num_threads_completed() const { return _num_threads_completed; }
1829 };
1830 TraceSelfClosure tsc;
1831
1832 if (all_threads) {
1833 Handshake::execute(&tsc);
1834 } else {
1835 oop thread_oop = JNIHandles::resolve(thread_handle);
1836 if (thread_oop != NULL) {
1837 JavaThread* target = java_lang_Thread::thread(thread_oop);
1838 Handshake::execute(&tsc, target);
1839 }
1840 }
1841 return tsc.num_threads_completed();
1842 WB_END
1843
1844 //Some convenience methods to deal with objects from java
1845 int WhiteBox::offset_for_field(const char* field_name, oop object,
1846 Symbol* signature_symbol) {
1847 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1848 Thread* THREAD = Thread::current();
1849
1850 //Get the class of our object
1851 Klass* arg_klass = object->klass();
1852 //Turn it into an instance-klass
1853 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1854
1855 //Create symbols to look for in the class
1856 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1857 THREAD);
1858
1859 //To be filled in with an offset of the field we're looking for
1860 fieldDescriptor fd;
1861
1862 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1863 if (res == NULL) {
1864 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1865 name_symbol->as_C_string());
1866 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1867 }
1868
1869 //fetch the field at the offset we've found
1870 int dest_offset = fd.offset();
1871
1872 return dest_offset;
1873 }
1874
1875
1876 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1877 int offset = offset_for_field(field_name, object,
1878 vmSymbols::string_signature());
1879 oop string = object->obj_field(offset);
1880 if (string == NULL) {
1881 return NULL;
1882 }
1883 const char* ret = java_lang_String::as_utf8_string(string);
1884 return ret;
1885 }
1886
1887 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1888 int offset =
1889 offset_for_field(field_name, object, vmSymbols::bool_signature());
1890 bool ret = (object->bool_field(offset) == JNI_TRUE);
1891 return ret;
1892 }
1893
1894 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1895 ResourceMark rm;
1896 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1897
1898 // one by one registration natives for exception catching
1899 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1900 CHECK_JNI_EXCEPTION(env);
1901 for (int i = 0, n = method_count; i < n; ++i) {
1902 // Skip dummy entries
1903 if (method_array[i].fnPtr == NULL) continue;
1904 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1905 jthrowable throwable_obj = env->ExceptionOccurred();
1906 if (throwable_obj != NULL) {
1907 env->ExceptionClear();
1908 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1909 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1910 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1911 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1912 method_array[i].name, method_array[i].signature);
1913 }
1914 } else {
1915 // Registration failed unexpectedly.
1916 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1917 method_array[i].name, method_array[i].signature);
1918 env->UnregisterNatives(wbclass);
1919 break;
1920 }
1921 }
1922 }
1923 }
1924
1925 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1926 // can't be in VM when we call JNI
1927 ThreadToNativeFromVM ttnfv(thread);
1928 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1929 CHECK_JNI_EXCEPTION_(env, 0);
1930 int ret;
1931 {
1932 ThreadInVMfromNative ttvfn(thread); // back to VM
1933 ret = DirectivesParser::parse_string(dir, tty);
1934 }
1935 env->ReleaseStringUTFChars(compDirect, dir);
1936 // -1 for error parsing directive. Return 0 as number of directives added.
1937 if (ret == -1) {
1938 ret = 0;
1939 }
1940 return (jint) ret;
1941 WB_END
1942
1943 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1944 DirectivesStack::pop(count);
1945 WB_END
1946
1947 // Checks that the library libfile has the noexecstack bit set.
1948 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1949 jboolean ret = false;
1950 #ifdef LINUX
1951 // Can't be in VM when we call JNI.
1952 ThreadToNativeFromVM ttnfv(thread);
1953 const char* lf = env->GetStringUTFChars(libfile, NULL);
1954 CHECK_JNI_EXCEPTION_(env, 0);
1955 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1956 env->ReleaseStringUTFChars(libfile, lf);
1957 #endif
1958 return ret;
1959 WB_END
1960
1961 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1962 LINUX_ONLY(return OSContainer::is_containerized();)
1963 return false;
1964 WB_END
1965
1966 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1967 os::print_os_info(tty);
1968 WB_END
1969
1970 // Elf decoder
1971 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1972 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1973 ElfFile::_do_not_cache_elf_section = true;
1974 #endif
1975 WB_END
1976
1977 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o))
1978 return (jint) ResolvedMethodTable::removed_entries_count();
1979 WB_END
1980
1981 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
1982 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
1983 WB_END
1984
1985
1986 #define CC (char*)
1987
1988 static JNINativeMethod methods[] = {
1989 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1990 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1991 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1992 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1993 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1994 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1995 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1996 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1997 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1998 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1999 {CC"parseCommandLine0",
2000 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2001 (void*) &WB_ParseCommandLine
2002 },
2003 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2004 (void*)&WB_AddToBootstrapClassLoaderSearch},
2005 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2006 (void*)&WB_AddToSystemClassLoaderSearch},
2007 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2008 (void*)&WB_GetCompressedOopsMaxHeapSize},
2009 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2010 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2011 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2012 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2013 #if INCLUDE_CDS
2014 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2015 #endif
2016 #if INCLUDE_G1GC
2017 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2018 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2019 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2020 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2021 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2022 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2023 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2024 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2025 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2026 (void*)&WB_G1AuxiliaryMemoryUsage },
2027 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2028 #endif // INCLUDE_G1GC
2029 #if INCLUDE_PARALLELGC
2030 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2031 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2032 #endif
2033 #if INCLUDE_NMT
2034 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2035 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2036 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2037 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2038 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2039 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2040 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2041 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2042 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2043 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2044 #endif // INCLUDE_NMT
2045 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2046 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2047 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2048 (void*)&WB_DeoptimizeMethod },
2049 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2050 (void*)&WB_IsMethodCompiled },
2051 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2052 (void*)&WB_IsMethodCompilable},
2053 {CC"isMethodQueuedForCompilation0",
2054 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2055 {CC"isIntrinsicAvailable0",
2056 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2057 (void*)&WB_IsIntrinsicAvailable},
2058 {CC"makeMethodNotCompilable0",
2059 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2060 {CC"testSetDontInlineMethod0",
2061 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2062 {CC"getMethodCompilationLevel0",
2063 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2064 {CC"getMethodEntryBci0",
2065 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2066 {CC"getCompileQueueSize",
2067 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2068 {CC"testSetForceInlineMethod0",
2069 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2070 {CC"enqueueMethodForCompilation0",
2071 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2072 {CC"enqueueInitializerForCompilation0",
2073 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2074 {CC"clearMethodState0",
2075 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2076 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2077 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2078 {CC"matchesMethod",
2079 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2080 (void*)&WB_MatchesMethod},
2081 {CC"matchesInline",
2082 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2083 (void*)&WB_MatchesInline},
2084 {CC"shouldPrintAssembly",
2085 CC"(Ljava/lang/reflect/Executable;I)Z",
2086 (void*)&WB_ShouldPrintAssembly},
2087
2088 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2089 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2090 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2091 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2092 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2093 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2094 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2095 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2096 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2097 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2098 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2099 (void*)&WB_SetStringVMFlag},
2100 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2101 (void*)&WB_GetBooleanVMFlag},
2102 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2103 (void*)&WB_GetIntVMFlag},
2104 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2105 (void*)&WB_GetUintVMFlag},
2106 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2107 (void*)&WB_GetIntxVMFlag},
2108 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2109 (void*)&WB_GetUintxVMFlag},
2110 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2111 (void*)&WB_GetUint64VMFlag},
2112 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2113 (void*)&WB_GetSizeTVMFlag},
2114 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2115 (void*)&WB_GetDoubleVMFlag},
2116 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2117 (void*)&WB_GetStringVMFlag},
2118 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2119 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2120 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2121 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2122 {CC"allocateMetaspace",
2123 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2124 {CC"freeMetaspace",
2125 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2126 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2127 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2128 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2129 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2130 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2131 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2132 (void*)&WB_GetNMethod },
2133 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2134 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2135 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2136 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2137 {CC"getCompilationActivityMode",
2138 CC"()I", (void*)&WB_GetCompilationActivityMode},
2139 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2140 (void*)&WB_GetMethodData },
2141 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2142 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2143 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2144 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2145 (void*)&WB_DefineModule },
2146 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2147 (void*)&WB_AddModuleExports },
2148 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2149 (void*)&WB_AddReadsModule },
2150 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2151 (void*)&WB_AddModuleExportsToAllUnnamed },
2152 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2153 (void*)&WB_AddModuleExportsToAll },
2154 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2155 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2156 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2157 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2158 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2159 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2160 {CC"remapInstructionOperandFromCPCache0",
2161 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2162 {CC"encodeConstantPoolIndyIndex0",
2163 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2164 {CC"getMethodBooleanOption",
2165 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2166 (void*)&WB_GetMethodBooleaneOption},
2167 {CC"getMethodIntxOption",
2168 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2169 (void*)&WB_GetMethodIntxOption},
2170 {CC"getMethodUintxOption",
2171 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2172 (void*)&WB_GetMethodUintxOption},
2173 {CC"getMethodDoubleOption",
2174 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2175 (void*)&WB_GetMethodDoubleOption},
2176 {CC"getMethodStringOption",
2177 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2178 (void*)&WB_GetMethodStringOption},
2179 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2180 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2181 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2182 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2183 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2184 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2185 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2186 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2187
2188 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2189 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2190 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2191 (void*)&WB_AddCompilerDirective },
2192 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2193 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2194 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2195 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2196 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2197 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2198 (void*)&WB_GetConcurrentGCPhases},
2199 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2200 (void*)&WB_RequestConcurrentGCPhase},
2201 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2202 (void*)&WB_CheckLibSpecifiesNoexecstack},
2203 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2204 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2205 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2206 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount },
2207 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2208 };
2209
2210
2211 #undef CC
2212
2213 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2214 {
2215 if (WhiteBoxAPI) {
2216 // Make sure that wbclass is loaded by the null classloader
2217 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2218 Handle loader(THREAD, ik->class_loader());
2219 if (loader.is_null()) {
2220 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2221 WhiteBox::set_used();
2222 }
2223 }
2224 }
2225 JVM_END