1 /*
2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/classLoaderData.hpp"
30 #include "classfile/modules.hpp"
31 #include "classfile/stringTable.hpp"
32 #include "code/codeCache.hpp"
33 #include "compiler/methodMatcher.hpp"
34 #include "compiler/directivesParser.hpp"
35 #include "gc/shared/gcConfig.hpp"
36 #include "gc/shared/genCollectedHeap.hpp"
37 #include "jvmtifiles/jvmtiEnv.hpp"
38 #include "memory/metadataFactory.hpp"
39 #include "memory/metaspaceShared.hpp"
40 #include "memory/iterator.hpp"
41 #include "memory/resourceArea.hpp"
42 #include "memory/universe.hpp"
43 #include "memory/oopFactory.hpp"
44 #include "oops/array.hpp"
45 #include "oops/constantPool.inline.hpp"
46 #include "oops/method.inline.hpp"
47 #include "oops/objArrayKlass.hpp"
48 #include "oops/objArrayOop.inline.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/typeArrayOop.inline.hpp"
51 #include "prims/wbtestmethods/parserTests.hpp"
52 #include "prims/whitebox.inline.hpp"
53 #include "runtime/arguments.hpp"
54 #include "runtime/compilationPolicy.hpp"
55 #include "runtime/deoptimization.hpp"
56 #include "runtime/flags/jvmFlag.hpp"
57 #include "runtime/frame.inline.hpp"
58 #include "runtime/handshake.hpp"
59 #include "runtime/interfaceSupport.inline.hpp"
60 #include "runtime/javaCalls.hpp"
61 #include "runtime/jniHandles.inline.hpp"
62 #include "runtime/os.hpp"
63 #include "runtime/sweeper.hpp"
64 #include "runtime/thread.hpp"
65 #include "runtime/threadSMR.hpp"
66 #include "runtime/vm_version.hpp"
67 #include "services/memoryService.hpp"
68 #include "utilities/align.hpp"
69 #include "utilities/debug.hpp"
70 #include "utilities/elfFile.hpp"
71 #include "utilities/exceptions.hpp"
72 #include "utilities/macros.hpp"
73 #if INCLUDE_CDS
74 #include "prims/cdsoffsets.hpp"
75 #endif // INCLUDE_CDS
76 #if INCLUDE_G1GC
77 #include "gc/g1/g1CollectedHeap.inline.hpp"
78 #include "gc/g1/g1ConcurrentMark.hpp"
79 #include "gc/g1/g1ConcurrentMarkThread.hpp"
80 #include "gc/g1/heapRegionRemSet.hpp"
81 #endif // INCLUDE_G1GC
82 #if INCLUDE_PARALLELGC
83 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
84 #include "gc/parallel/adjoiningGenerations.hpp"
85 #endif // INCLUDE_PARALLELGC
86 #if INCLUDE_NMT
87 #include "services/mallocSiteTable.hpp"
88 #include "services/memTracker.hpp"
89 #include "utilities/nativeCallStack.hpp"
90 #endif // INCLUDE_NMT
91
92 #ifdef LINUX
93 #include "osContainer_linux.hpp"
94 #endif
95
96 #define SIZE_T_MAX_VALUE ((size_t) -1)
97
98 #define CHECK_JNI_EXCEPTION_(env, value) \
99 do { \
100 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
101 if (HAS_PENDING_EXCEPTION) { \
102 return(value); \
103 } \
104 } while (0)
105
106 #define CHECK_JNI_EXCEPTION(env) \
107 do { \
108 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
109 if (HAS_PENDING_EXCEPTION) { \
110 return; \
111 } \
112 } while (0)
113
114 bool WhiteBox::_used = false;
115 volatile bool WhiteBox::compilation_locked = false;
116
117 class VM_WhiteBoxOperation : public VM_Operation {
118 public:
119 VM_WhiteBoxOperation() { }
120 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
121 bool allow_nested_vm_operations() const { return true; }
122 };
123
124
125 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
126 return (jlong)(void*)JNIHandles::resolve(obj);
127 WB_END
128
129 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
130 return heapOopSize;
131 WB_END
132
133 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
134 return os::vm_page_size();
135 WB_END
136
137 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
138 return os::vm_allocation_granularity();
139 WB_END
140
141 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
142 return os::large_page_size();
143 WB_END
144
145 class WBIsKlassAliveClosure : public KlassClosure {
146 Symbol* _name;
147 bool _found;
148 public:
149 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
150
151 void do_klass(Klass* k) {
152 if (_found) return;
153 Symbol* ksym = k->name();
154 if (ksym->fast_compare(_name) == 0) {
155 _found = true;
156 }
157 }
158
159 bool found() const {
160 return _found;
161 }
162 };
163
164 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
165 oop h_name = JNIHandles::resolve(name);
166 if (h_name == NULL) return false;
167 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
168 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
169
170 WBIsKlassAliveClosure closure(sym);
171 ClassLoaderDataGraph::classes_do(&closure);
172
173 return closure.found();
174 WB_END
175
176 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
177 #if INCLUDE_JVMTI
178 ResourceMark rm;
179 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
180 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
181 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
182 assert(err == JVMTI_ERROR_NONE, "must not fail");
183 #endif
184 }
185 WB_END
186
187 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
188 #if INCLUDE_JVMTI
189 ResourceMark rm;
190 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
191 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
192 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
193 assert(err == JVMTI_ERROR_NONE, "must not fail");
194 #endif
195 }
196 WB_END
197
198
199 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
200 return (jlong)Arguments::max_heap_for_compressed_oops();
201 }
202 WB_END
203
204 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
205 CollectorPolicy * p = Universe::heap()->collector_policy();
206 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
207 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
208 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
209 p->space_alignment(), p->heap_alignment());
210 }
211 WB_END
212
213 #ifndef PRODUCT
214 // Forward declaration
215 void TestReservedSpace_test();
216 void TestReserveMemorySpecial_test();
217 void TestVirtualSpace_test();
218 void TestMetaspaceUtils_test();
219 #endif
220
221 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
222 #ifndef PRODUCT
223 TestReservedSpace_test();
224 TestReserveMemorySpecial_test();
225 TestVirtualSpace_test();
226 TestMetaspaceUtils_test();
227 #endif
228 WB_END
229
230 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
231 size_t granularity = os::vm_allocation_granularity();
232 ReservedHeapSpace rhs(100 * granularity, granularity, false);
233 VirtualSpace vs;
234 vs.initialize(rhs, 50 * granularity);
235
236 // Check if constraints are complied
237 if (!( UseCompressedOops && rhs.base() != NULL &&
238 Universe::narrow_oop_base() != NULL &&
239 Universe::narrow_oop_use_implicit_null_checks() )) {
240 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
241 "\tUseCompressedOops is %d\n"
242 "\trhs.base() is " PTR_FORMAT "\n"
243 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
244 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
245 UseCompressedOops,
246 p2i(rhs.base()),
247 p2i(Universe::narrow_oop_base()),
248 Universe::narrow_oop_use_implicit_null_checks());
249 return;
250 }
251 tty->print_cr("Reading from no access area... ");
252 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
253 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
254 WB_END
255
256 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
257 size_t magnitude, size_t iterations) {
258 size_t granularity = os::vm_allocation_granularity();
259 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
260 VirtualSpace vs;
261 if (!vs.initialize(rhs, 0)) {
262 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
263 return 3;
264 }
265
266 int seed = os::random();
267 tty->print_cr("Random seed is %d", seed);
268 os::init_random(seed);
269
270 for (size_t i = 0; i < iterations; i++) {
271
272 // Whether we will shrink or grow
273 bool shrink = os::random() % 2L == 0;
274
275 // Get random delta to resize virtual space
276 size_t delta = (size_t)os::random() % magnitude;
277
278 // If we are about to shrink virtual space below zero, then expand instead
279 if (shrink && vs.committed_size() < delta) {
280 shrink = false;
281 }
282
283 // Resizing by delta
284 if (shrink) {
285 vs.shrink_by(delta);
286 } else {
287 // If expanding fails expand_by will silently return false
288 vs.expand_by(delta, true);
289 }
290 }
291 return 0;
292 }
293
294 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
295 jlong reserved_space_size, jlong magnitude, jlong iterations))
296 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
297 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
298 iterations);
299 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
300 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
301 return 1;
302 }
303
304 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
305 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
306 if (sizeof(size_t) < sizeof(jlong)) {
307 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
308 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
309 || iterations > size_t_max_value) {
310 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
311 return 2;
312 }
313 }
314
315 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
316 (size_t) magnitude, (size_t) iterations);
317 WB_END
318
319 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
320 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
321 WB_END
322
323 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
324 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
325 WB_END
326
327 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
328 return GCConfig::is_gc_selected_ergonomically();
329 WB_END
330
331 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
332 oop p = JNIHandles::resolve(obj);
333 #if INCLUDE_G1GC
334 if (UseG1GC) {
335 G1CollectedHeap* g1h = G1CollectedHeap::heap();
336 const HeapRegion* hr = g1h->heap_region_containing(p);
337 if (hr == NULL) {
338 return false;
339 }
340 return !(hr->is_young());
341 }
342 #endif
343 #if INCLUDE_PARALLELGC
344 if (UseParallelGC) {
345 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
346 return !psh->is_in_young(p);
347 }
348 #endif // INCLUDE_PARALLELGC
349 GenCollectedHeap* gch = GenCollectedHeap::heap();
350 return !gch->is_in_young(p);
351 WB_END
352
353 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
354 oop p = JNIHandles::resolve(obj);
355 return p->size() * HeapWordSize;
356 WB_END
357
358 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
359 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
360 return (jlong)alignment;
361 WB_END
362
363 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
364 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
365 return (jlong)alignment;
366 WB_END
367
368 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
369 return Universe::heap()->supports_concurrent_phase_control();
370 WB_END
371
372 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
373 const char* const* phases = Universe::heap()->concurrent_phases();
374 jint nphases = 0;
375 for ( ; phases[nphases] != NULL; ++nphases) ;
376
377 ResourceMark rm(thread);
378 ThreadToNativeFromVM ttn(thread);
379 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
380 CHECK_JNI_EXCEPTION_(env, NULL);
381
382 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
383 CHECK_JNI_EXCEPTION_(env, NULL);
384
385 // If push fails, return with pending exception.
386 if (env->PushLocalFrame(nphases) < 0) return NULL;
387 for (jint i = 0; i < nphases; ++i) {
388 jstring phase = env->NewStringUTF(phases[i]);
389 CHECK_JNI_EXCEPTION_(env, NULL);
390 env->SetObjectArrayElement(result, i, phase);
391 CHECK_JNI_EXCEPTION_(env, NULL);
392 }
393 env->PopLocalFrame(NULL);
394
395 return result;
396 WB_END
397
398 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
399 Handle h_name(THREAD, JNIHandles::resolve(name));
400 ResourceMark rm;
401 const char* c_name = java_lang_String::as_utf8_string(h_name());
402 return Universe::heap()->request_concurrent_phase(c_name);
403 WB_END
404
405 #if INCLUDE_G1GC
406
407 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
408 if (UseG1GC) {
409 G1CollectedHeap* g1h = G1CollectedHeap::heap();
410 oop result = JNIHandles::resolve(obj);
411 const HeapRegion* hr = g1h->heap_region_containing(result);
412 return hr->is_humongous();
413 }
414 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
415 WB_END
416
417 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
418 if (UseG1GC) {
419 G1CollectedHeap* g1h = G1CollectedHeap::heap();
420 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
421 return hr->is_humongous();
422 }
423 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
424 WB_END
425
426 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
427 if (UseG1GC) {
428 G1CollectedHeap* g1h = G1CollectedHeap::heap();
429 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
430 return hr->is_free();
431 }
432 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
433 WB_END
434
435 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
436 if (UseG1GC) {
437 G1CollectedHeap* g1h = G1CollectedHeap::heap();
438 size_t nr = g1h->max_regions();
439 return (jlong)nr;
440 }
441 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
442 WB_END
443
444 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
445 if (UseG1GC) {
446 G1CollectedHeap* g1h = G1CollectedHeap::heap();
447 size_t nr = g1h->num_free_regions();
448 return (jlong)nr;
449 }
450 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
451 WB_END
452
453 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
454 if (UseG1GC) {
455 G1CollectedHeap* g1h = G1CollectedHeap::heap();
456 return g1h->concurrent_mark()->cm_thread()->during_cycle();
457 }
458 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
459 WB_END
460
461 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
462 if (UseG1GC) {
463 G1CollectedHeap* g1h = G1CollectedHeap::heap();
464 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
465 g1h->collect(GCCause::_wb_conc_mark);
466 return true;
467 }
468 return false;
469 }
470 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
471 WB_END
472
473 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
474 if (UseG1GC) {
475 return (jint)HeapRegion::GrainBytes;
476 }
477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
478 WB_END
479
480 #endif // INCLUDE_G1GC
481
482 #if INCLUDE_PARALLELGC
483
484 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
485 if (UseParallelGC) {
486 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
487 }
488 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
489 WB_END
490
491 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
492 if (UseParallelGC) {
493 return ParallelScavengeHeap::heap()->generation_alignment();
494 }
495 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
496 WB_END
497
498 #endif // INCLUDE_PARALLELGC
499
500 #if INCLUDE_G1GC
501
502 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
503 if (UseG1GC) {
504 ResourceMark rm(THREAD);
505 G1CollectedHeap* g1h = G1CollectedHeap::heap();
506 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
507 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
508 return JNIHandles::make_local(env, h());
509 }
510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
511 WB_END
512
513 class OldRegionsLivenessClosure: public HeapRegionClosure {
514
515 private:
516 const int _liveness;
517 size_t _total_count;
518 size_t _total_memory;
519 size_t _total_memory_to_free;
520
521 public:
522 OldRegionsLivenessClosure(int liveness) :
523 _liveness(liveness),
524 _total_count(0),
525 _total_memory(0),
526 _total_memory_to_free(0) { }
527
528 size_t total_count() { return _total_count; }
529 size_t total_memory() { return _total_memory; }
530 size_t total_memory_to_free() { return _total_memory_to_free; }
531
532 bool do_heap_region(HeapRegion* r) {
533 if (r->is_old()) {
534 size_t prev_live = r->marked_bytes();
535 size_t live = r->live_bytes();
536 size_t size = r->used();
537 size_t reg_size = HeapRegion::GrainBytes;
538 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
539 _total_memory += size;
540 ++_total_count;
541 if (size == reg_size) {
542 // we don't include non-full regions since they are unlikely included in mixed gc
543 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
544 _total_memory_to_free += size - prev_live;
545 }
546 }
547 }
548 return false;
549 }
550 };
551
552
553 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
554 if (!UseG1GC) {
555 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
556 }
557 if (liveness < 0) {
558 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
559 }
560
561 G1CollectedHeap* g1h = G1CollectedHeap::heap();
562 OldRegionsLivenessClosure rli(liveness);
563 g1h->heap_region_iterate(&rli);
564
565 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
566 result->long_at_put(0, rli.total_count());
567 result->long_at_put(1, rli.total_memory());
568 result->long_at_put(2, rli.total_memory_to_free());
569 return (jlongArray) JNIHandles::make_local(env, result);
570 WB_END
571
572 #endif // INCLUDE_G1GC
573
574 #if INCLUDE_NMT
575 // Alloc memory using the test memory type so that we can use that to see if
576 // NMT picks it up correctly
577 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
578 jlong addr = 0;
579 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
580 return addr;
581 WB_END
582
583 // Alloc memory with pseudo call stack. The test can create psudo malloc
584 // allocation site to stress the malloc tracking.
585 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
586 address pc = (address)(size_t)pseudo_stack;
587 NativeCallStack stack(&pc, 1);
588 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
589 WB_END
590
591 // Free the memory allocated by NMTAllocTest
592 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
593 os::free((void*)(uintptr_t)mem);
594 WB_END
595
596 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
597 jlong addr = 0;
598
599 addr = (jlong)(uintptr_t)os::reserve_memory(size);
600 MemTracker::record_virtual_memory_type((address)addr, mtTest);
601
602 return addr;
603 WB_END
604
605 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
606 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
607 MemTracker::record_virtual_memory_type((address)addr, mtTest);
608
609 return addr;
610 WB_END
611
612 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
613 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
614 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
615 WB_END
616
617 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
618 os::uncommit_memory((char *)(uintptr_t)addr, size);
619 WB_END
620
621 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
622 os::release_memory((char *)(uintptr_t)addr, size);
623 WB_END
624
625 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
626 // Test that we can downgrade NMT levels but not upgrade them.
627 if (MemTracker::tracking_level() == NMT_off) {
628 MemTracker::transition_to(NMT_off);
629 return MemTracker::tracking_level() == NMT_off;
630 } else {
631 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
632 MemTracker::transition_to(NMT_summary);
633 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
634
635 // Can't go to detail once NMT is set to summary.
636 MemTracker::transition_to(NMT_detail);
637 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
638
639 // Shutdown sets tracking level to minimal.
640 MemTracker::shutdown();
641 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
642
643 // Once the tracking level is minimal, we cannot increase to summary.
644 // The code ignores this request instead of asserting because if the malloc site
645 // table overflows in another thread, it tries to change the code to summary.
646 MemTracker::transition_to(NMT_summary);
647 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
648
649 // Really can never go up to detail, verify that the code would never do this.
650 MemTracker::transition_to(NMT_detail);
651 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
652 return MemTracker::tracking_level() == NMT_minimal;
653 }
654 WB_END
655
656 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
657 int hash_size = MallocSiteTable::hash_buckets();
658 assert(hash_size > 0, "NMT hash_size should be > 0");
659 return (jint)hash_size;
660 WB_END
661 #endif // INCLUDE_NMT
662
663 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
664 assert(method != NULL, "method should not be null");
665 ThreadToNativeFromVM ttn(thread);
666 return env->FromReflectedMethod(method);
667 }
668
669 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
670 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
671 private:
672 int _result;
673 const bool _make_not_entrant;
674 public:
675 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
676 _result(0), _make_not_entrant(make_not_entrant) { }
677 int result() const { return _result; }
678
679 void doit() {
680 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
681 if (t->has_last_Java_frame()) {
682 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
683 frame* f = fst.current();
684 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
685 RegisterMap* reg_map = fst.register_map();
686 Deoptimization::deoptimize(t, *f, reg_map);
687 if (_make_not_entrant) {
688 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
689 assert(cm != NULL, "sanity check");
690 cm->make_not_entrant();
691 }
692 ++_result;
693 }
694 }
695 }
696 }
697 }
698 };
699
700 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
701 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
702 VMThread::execute(&op);
703 return op.result();
704 WB_END
705
706 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
707 MutexLockerEx mu(Compile_lock);
708 CodeCache::mark_all_nmethods_for_deoptimization();
709 VM_Deoptimize op;
710 VMThread::execute(&op);
711 WB_END
712
713 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
714 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
715 int result = 0;
716 CHECK_JNI_EXCEPTION_(env, result);
717 MutexLockerEx mu(Compile_lock);
718 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
719 if (is_osr) {
720 result += mh->mark_osr_nmethods();
721 } else if (mh->code() != NULL) {
722 mh->code()->mark_for_deoptimization();
723 ++result;
724 }
725 result += CodeCache::mark_for_deoptimization(mh());
726 if (result > 0) {
727 VM_Deoptimize op;
728 VMThread::execute(&op);
729 }
730 return result;
731 WB_END
732
733 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
734 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
735 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
736 MutexLockerEx mu(Compile_lock);
737 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
738 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
739 if (code == NULL) {
740 return JNI_FALSE;
741 }
742 return (code->is_alive() && !code->is_marked_for_deoptimization());
743 WB_END
744
745 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
746 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
747 return false;
748 }
749 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
750 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
751 MutexLockerEx mu(Compile_lock);
752 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
753 if (is_osr) {
754 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
755 } else {
756 return CompilationPolicy::can_be_compiled(mh, comp_level);
757 }
758 WB_END
759
760 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
761 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
762 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
763 MutexLockerEx mu(Compile_lock);
764 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
765 return mh->queued_for_compilation();
766 WB_END
767
768 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
769 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
770 return false; // Intrinsic is not available on a non-existent compilation level.
771 }
772 jmethodID method_id, compilation_context_id;
773 method_id = reflected_method_to_jmid(thread, env, method);
774 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
775 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
776
777 DirectiveSet* directive;
778 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
779 assert(comp != NULL, "compiler not available");
780 if (compilation_context != NULL) {
781 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
782 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
783 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
784 directive = DirectivesStack::getMatchingDirective(cch, comp);
785 } else {
786 // Calling with NULL matches default directive
787 directive = DirectivesStack::getDefaultDirective(comp);
788 }
789 bool result = comp->is_intrinsic_available(mh, directive);
790 DirectivesStack::release(directive);
791 return result;
792 WB_END
793
794 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
795 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
796 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
797 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
798 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
799 return (code != NULL ? code->comp_level() : CompLevel_none);
800 WB_END
801
802 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
803 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
804 CHECK_JNI_EXCEPTION(env);
805 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
806 if (is_osr) {
807 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
808 } else {
809 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
810 }
811 WB_END
812
813 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
814 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
815 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
816 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
817 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
818 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
819 WB_END
820
821 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
822 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
823 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
825 bool result = mh->dont_inline();
826 mh->set_dont_inline(value == JNI_TRUE);
827 return result;
828 WB_END
829
830 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
831 if (comp_level == CompLevel_any) {
832 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
833 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
834 } else {
835 return CompileBroker::queue_size(comp_level);
836 }
837 WB_END
838
839 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
840 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
841 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
842 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
843 bool result = mh->force_inline();
844 mh->set_force_inline(value == JNI_TRUE);
845 return result;
846 WB_END
847
848 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
849 // Screen for unavailable/bad comp level or null method
850 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
851 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) {
852 return false;
853 }
854
855 // Check if compilation is blocking
856 methodHandle mh(THREAD, method);
857 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
858 bool is_blocking = !directive->BackgroundCompilationOption;
859 DirectivesStack::release(directive);
860
861 // Compile method and check result
862 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
863 MutexLockerEx mu(Compile_lock);
864 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL);
865 }
866
867 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
868 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
869 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
870 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
871 WB_END
872
873 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
874 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
875 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
876 WB_END
877
878 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
879 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
880 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
881
882 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
883 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
884 bool result = directive->PrintAssemblyOption;
885 DirectivesStack::release(directive);
886
887 return result;
888 WB_END
889
890 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
891 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
892 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
893
894 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
895
896 ResourceMark rm;
897 const char* error_msg = NULL;
898 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
899 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
900
901 if (m == NULL) {
902 assert(error_msg != NULL, "Always have an error message");
903 tty->print_cr("Got error: %s", error_msg);
904 return -1; // Pattern failed
905 }
906
907 // Pattern works - now check if it matches
908 int result;
909 if (m->match(mh, InlineMatcher::force_inline)) {
910 result = 2; // Force inline match
911 } else if (m->match(mh, InlineMatcher::dont_inline)) {
912 result = 1; // Dont inline match
913 } else {
914 result = 0; // No match
915 }
916 delete m;
917 return result;
918 WB_END
919
920 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
921 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
922 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
923
924 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
925
926 ResourceMark rm;
927 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
928
929 const char* error_msg = NULL;
930
931 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
932 if (m == NULL) {
933 assert(error_msg != NULL, "Must have error_msg");
934 tty->print_cr("Got error: %s", error_msg);
935 return -1;
936 }
937
938 // Pattern works - now check if it matches
939 int result = m->matches(mh);
940 delete m;
941 assert(result == 0 || result == 1, "Result out of range");
942 return result;
943 WB_END
944
945 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
946 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
947 CHECK_JNI_EXCEPTION(env);
948 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
949 MutexLockerEx mu(Compile_lock);
950 MethodData* mdo = mh->method_data();
951 MethodCounters* mcs = mh->method_counters();
952
953 if (mdo != NULL) {
954 mdo->init();
955 ResourceMark rm;
956 int arg_count = mdo->method()->size_of_parameters();
957 for (int i = 0; i < arg_count; i++) {
958 mdo->set_arg_modified(i, 0);
959 }
960 MutexLockerEx mu(mdo->extra_data_lock());
961 mdo->clean_method_data(/*always_clean*/true);
962 }
963
964 mh->clear_not_c1_compilable();
965 mh->clear_not_c2_compilable();
966 mh->clear_not_c2_osr_compilable();
967 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
968 if (mcs != NULL) {
969 mcs->backedge_counter()->init();
970 mcs->invocation_counter()->init();
971 mcs->set_interpreter_invocation_count(0);
972 mcs->set_interpreter_throwout_count(0);
973
974 #ifdef TIERED
975 mcs->set_rate(0.0F);
976 mh->set_prev_event_count(0);
977 mh->set_prev_time(0);
978 #endif
979 }
980 WB_END
981
982 template <typename T>
983 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
984 if (name == NULL) {
985 return false;
986 }
987 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
988 const char* flag_name = env->GetStringUTFChars(name, NULL);
989 CHECK_JNI_EXCEPTION_(env, false);
990 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
991 env->ReleaseStringUTFChars(name, flag_name);
992 return (result == JVMFlag::SUCCESS);
993 }
994
995 template <typename T>
996 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
997 if (name == NULL) {
998 return false;
999 }
1000 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1001 const char* flag_name = env->GetStringUTFChars(name, NULL);
1002 CHECK_JNI_EXCEPTION_(env, false);
1003 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1004 env->ReleaseStringUTFChars(name, flag_name);
1005 return (result == JVMFlag::SUCCESS);
1006 }
1007
1008 template <typename T>
1009 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1010 ResourceMark rm(thread);
1011 jclass clazz = env->FindClass(name->as_C_string());
1012 CHECK_JNI_EXCEPTION_(env, NULL);
1013 jmethodID methodID = env->GetStaticMethodID(clazz,
1014 vmSymbols::valueOf_name()->as_C_string(),
1015 sig->as_C_string());
1016 CHECK_JNI_EXCEPTION_(env, NULL);
1017 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1018 CHECK_JNI_EXCEPTION_(env, NULL);
1019 return result;
1020 }
1021
1022 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1023 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1024 }
1025 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1026 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1027 }
1028 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1029 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1030 }
1031 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1032 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1033 }*/
1034 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1035 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1036 }
1037
1038 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1039 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1040 const char* flag_name = env->GetStringUTFChars(name, NULL);
1041 CHECK_JNI_EXCEPTION_(env, NULL);
1042 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1043 env->ReleaseStringUTFChars(name, flag_name);
1044 return result;
1045 }
1046
1047 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1048 JVMFlag* flag = getVMFlag(thread, env, name);
1049 return (flag != NULL) && flag->is_constant_in_binary();
1050 WB_END
1051
1052 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1053 JVMFlag* flag = getVMFlag(thread, env, name);
1054 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1055 WB_END
1056
1057 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1058 bool result;
1059 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1060 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1061 return booleanBox(thread, env, result);
1062 }
1063 return NULL;
1064 WB_END
1065
1066 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1067 int result;
1068 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1069 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1070 return longBox(thread, env, result);
1071 }
1072 return NULL;
1073 WB_END
1074
1075 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1076 uint result;
1077 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1078 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1079 return longBox(thread, env, result);
1080 }
1081 return NULL;
1082 WB_END
1083
1084 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1085 intx result;
1086 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1087 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1088 return longBox(thread, env, result);
1089 }
1090 return NULL;
1091 WB_END
1092
1093 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1094 uintx result;
1095 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
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_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1103 uint64_t result;
1104 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
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_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1112 uintx result;
1113 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
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_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1121 double result;
1122 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1123 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1124 return doubleBox(thread, env, result);
1125 }
1126 return NULL;
1127 WB_END
1128
1129 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1130 ccstr ccstrResult;
1131 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1132 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1133 jstring result = env->NewStringUTF(ccstrResult);
1134 CHECK_JNI_EXCEPTION_(env, NULL);
1135 return result;
1136 }
1137 return NULL;
1138 WB_END
1139
1140 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1141 bool result = value == JNI_TRUE ? true : false;
1142 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1143 WB_END
1144
1145 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1146 int result = value;
1147 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1148 WB_END
1149
1150 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1151 uint result = value;
1152 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1153 WB_END
1154
1155 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1156 intx result = value;
1157 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1158 WB_END
1159
1160 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1161 uintx result = value;
1162 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1163 WB_END
1164
1165 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1166 uint64_t result = value;
1167 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1168 WB_END
1169
1170 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1171 size_t result = value;
1172 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1173 WB_END
1174
1175 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1176 double result = value;
1177 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1178 WB_END
1179
1180 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1181 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1182 const char* ccstrValue;
1183 if (value == NULL) {
1184 ccstrValue = NULL;
1185 }
1186 else {
1187 ccstrValue = env->GetStringUTFChars(value, NULL);
1188 CHECK_JNI_EXCEPTION(env);
1189 }
1190 ccstr ccstrResult = ccstrValue;
1191 bool needFree;
1192 {
1193 ThreadInVMfromNative ttvfn(thread); // back to VM
1194 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1195 }
1196 if (value != NULL) {
1197 env->ReleaseStringUTFChars(value, ccstrValue);
1198 }
1199 if (needFree) {
1200 FREE_C_HEAP_ARRAY(char, ccstrResult);
1201 }
1202 WB_END
1203
1204 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1205 WhiteBox::compilation_locked = true;
1206 WB_END
1207
1208 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1209 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1210 WhiteBox::compilation_locked = false;
1211 mo.notify_all();
1212 WB_END
1213
1214 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1215 // Force a code cache sweep and block until it finished
1216 NMethodSweeper::force_sweep();
1217 WB_END
1218
1219 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1220 ResourceMark rm(THREAD);
1221 int len;
1222 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1223 return (StringTable::lookup(name, len) != NULL);
1224 WB_END
1225
1226 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1227 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1228 Universe::heap()->collect(GCCause::_wb_full_gc);
1229 #if INCLUDE_G1GC
1230 if (UseG1GC) {
1231 // Needs to be cleared explicitly for G1
1232 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1233 }
1234 #endif // INCLUDE_G1GC
1235 WB_END
1236
1237 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1238 Universe::heap()->collect(GCCause::_wb_young_gc);
1239 WB_END
1240
1241 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1242 // static+volatile in order to force the read to happen
1243 // (not be eliminated by the compiler)
1244 static char c;
1245 static volatile char* p;
1246
1247 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1248 if (p == NULL) {
1249 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1250 }
1251
1252 c = *p;
1253 WB_END
1254
1255 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1256 const char* features = VM_Version::features_string();
1257 ThreadToNativeFromVM ttn(thread);
1258 jstring features_string = env->NewStringUTF(features);
1259
1260 CHECK_JNI_EXCEPTION_(env, NULL);
1261
1262 return features_string;
1263 WB_END
1264
1265 int WhiteBox::get_blob_type(const CodeBlob* code) {
1266 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1267 if (code->is_aot()) {
1268 return -1;
1269 }
1270 return CodeCache::get_code_heap(code)->code_blob_type();
1271 }
1272
1273 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1274 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1275 return CodeCache::get_code_heap(blob_type);
1276 }
1277
1278 struct CodeBlobStub {
1279 CodeBlobStub(const CodeBlob* blob) :
1280 name(os::strdup(blob->name())),
1281 size(blob->size()),
1282 blob_type(WhiteBox::get_blob_type(blob)),
1283 address((jlong) blob) { }
1284 ~CodeBlobStub() { os::free((void*) name); }
1285 const char* const name;
1286 const jint size;
1287 const jint blob_type;
1288 const jlong address;
1289 };
1290
1291 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1292 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1293 CHECK_JNI_EXCEPTION_(env, NULL);
1294 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1295
1296 jstring name = env->NewStringUTF(cb->name);
1297 CHECK_JNI_EXCEPTION_(env, NULL);
1298 env->SetObjectArrayElement(result, 0, name);
1299
1300 jobject obj = integerBox(thread, env, cb->size);
1301 CHECK_JNI_EXCEPTION_(env, NULL);
1302 env->SetObjectArrayElement(result, 1, obj);
1303
1304 obj = integerBox(thread, env, cb->blob_type);
1305 CHECK_JNI_EXCEPTION_(env, NULL);
1306 env->SetObjectArrayElement(result, 2, obj);
1307
1308 obj = longBox(thread, env, cb->address);
1309 CHECK_JNI_EXCEPTION_(env, NULL);
1310 env->SetObjectArrayElement(result, 3, obj);
1311
1312 return result;
1313 }
1314
1315 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1316 ResourceMark rm(THREAD);
1317 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1318 CHECK_JNI_EXCEPTION_(env, NULL);
1319 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1320 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1321 jobjectArray result = NULL;
1322 if (code == NULL) {
1323 return result;
1324 }
1325 int comp_level = code->comp_level();
1326 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1327
1328 ThreadToNativeFromVM ttn(thread);
1329 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1330 CHECK_JNI_EXCEPTION_(env, NULL);
1331 result = env->NewObjectArray(5, clazz, NULL);
1332 if (result == NULL) {
1333 return result;
1334 }
1335
1336 CodeBlobStub stub(code);
1337 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1338 CHECK_JNI_EXCEPTION_(env, NULL);
1339 env->SetObjectArrayElement(result, 0, codeBlob);
1340
1341 jobject level = integerBox(thread, env, comp_level);
1342 CHECK_JNI_EXCEPTION_(env, NULL);
1343 env->SetObjectArrayElement(result, 1, level);
1344
1345 jbyteArray insts = env->NewByteArray(insts_size);
1346 CHECK_JNI_EXCEPTION_(env, NULL);
1347 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1348 env->SetObjectArrayElement(result, 2, insts);
1349
1350 jobject id = integerBox(thread, env, code->compile_id());
1351 CHECK_JNI_EXCEPTION_(env, NULL);
1352 env->SetObjectArrayElement(result, 3, id);
1353
1354 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1355 CHECK_JNI_EXCEPTION_(env, NULL);
1356 env->SetObjectArrayElement(result, 4, entry_point);
1357
1358 return result;
1359 WB_END
1360
1361 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1362 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1363 BufferBlob* blob;
1364 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1365 if (full_size < size) {
1366 full_size += align_up(size - full_size, oopSize);
1367 }
1368 {
1369 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1370 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1371 if (blob != NULL) {
1372 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1373 }
1374 }
1375 // Track memory usage statistic after releasing CodeCache_lock
1376 MemoryService::track_code_cache_memory_usage();
1377 return blob;
1378 }
1379
1380 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1381 if (size < 0) {
1382 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1383 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1384 }
1385 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1386 WB_END
1387
1388 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1389 if (addr == 0) {
1390 return;
1391 }
1392 BufferBlob::free((BufferBlob*) addr);
1393 WB_END
1394
1395 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1396 ResourceMark rm;
1397 GrowableArray<CodeBlobStub*> blobs;
1398 {
1399 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1400 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1401 if (heap == NULL) {
1402 return NULL;
1403 }
1404 for (CodeBlob* cb = (CodeBlob*) heap->first();
1405 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1406 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1407 new (stub) CodeBlobStub(cb);
1408 blobs.append(stub);
1409 }
1410 }
1411 if (blobs.length() == 0) {
1412 return NULL;
1413 }
1414 ThreadToNativeFromVM ttn(thread);
1415 jobjectArray result = NULL;
1416 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1417 CHECK_JNI_EXCEPTION_(env, NULL);
1418 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1419 CHECK_JNI_EXCEPTION_(env, NULL);
1420 if (result == NULL) {
1421 return result;
1422 }
1423 int i = 0;
1424 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1425 it != blobs.end(); ++it) {
1426 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1427 CHECK_JNI_EXCEPTION_(env, NULL);
1428 env->SetObjectArrayElement(result, i, obj);
1429 CHECK_JNI_EXCEPTION_(env, NULL);
1430 ++i;
1431 }
1432 return result;
1433 WB_END
1434
1435 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1436 return CompileBroker::get_compilation_activity_mode();
1437 WB_END
1438
1439 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1440 if (addr == 0) {
1441 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1442 "WB_GetCodeBlob: addr is null");
1443 }
1444 ThreadToNativeFromVM ttn(thread);
1445 CodeBlobStub stub((CodeBlob*) addr);
1446 return codeBlob2objectArray(thread, env, &stub);
1447 WB_END
1448
1449 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1450 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1451 CHECK_JNI_EXCEPTION_(env, 0);
1452 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1453 return (jlong) mh->method_data();
1454 WB_END
1455
1456 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1457 return (jlong) Thread::current()->stack_size();
1458 WB_END
1459
1460 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1461 JavaThread* t = JavaThread::current();
1462 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1463 WB_END
1464
1465
1466 int WhiteBox::array_bytes_to_length(size_t bytes) {
1467 return Array<u1>::bytes_to_length(bytes);
1468 }
1469
1470 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1471 if (size < 0) {
1472 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1473 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1474 }
1475
1476 oop class_loader_oop = JNIHandles::resolve(class_loader);
1477 ClassLoaderData* cld = class_loader_oop != NULL
1478 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1479 : ClassLoaderData::the_null_class_loader_data();
1480
1481 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1482
1483 return (jlong)(uintptr_t)metadata;
1484 WB_END
1485
1486 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1487 oop class_loader_oop = JNIHandles::resolve(class_loader);
1488 ClassLoaderData* cld = class_loader_oop != NULL
1489 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1490 : ClassLoaderData::the_null_class_loader_data();
1491
1492 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1493 WB_END
1494
1495 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1496 jstring version, jstring location, jobjectArray packages))
1497 ResourceMark rm(THREAD);
1498
1499 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1500 objArrayHandle packages_h(THREAD, packages_oop);
1501 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1502
1503 char** pkgs = NULL;
1504 if (num_packages > 0) {
1505 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1506 for (int x = 0; x < num_packages; x++) {
1507 oop pkg_str = packages_h->obj_at(x);
1508 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1509 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1510 err_msg("Bad package name"));
1511 }
1512 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1513 }
1514 }
1515 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1516 WB_END
1517
1518 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1519 ResourceMark rm(THREAD);
1520 char* package_name = NULL;
1521 if (package != NULL) {
1522 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1523 }
1524 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1525 WB_END
1526
1527 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1528 ResourceMark rm(THREAD);
1529 char* package_name = NULL;
1530 if (package != NULL) {
1531 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1532 }
1533 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1534 WB_END
1535
1536 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1537 ResourceMark rm(THREAD);
1538 char* package_name = NULL;
1539 if (package != NULL) {
1540 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1541 }
1542 Modules::add_module_exports(module, package_name, NULL, CHECK);
1543 WB_END
1544
1545 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1546 Modules::add_reads_module(from_module, source_module, CHECK);
1547 WB_END
1548
1549 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1550 if (inc < 0) {
1551 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1552 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1553 }
1554
1555 jlong max_size_t = (jlong) ((size_t) -1);
1556 if (inc > max_size_t) {
1557 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1558 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1559 }
1560
1561 size_t new_cap_until_GC = 0;
1562 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1563 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1564 if (!success) {
1565 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1566 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1567 "due to contention with another thread");
1568 }
1569 return (jlong) new_cap_until_GC;
1570 WB_END
1571
1572 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1573 return (jlong) MetaspaceGC::capacity_until_GC();
1574 WB_END
1575
1576 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1577 return MetaspaceGC::should_concurrent_collect();
1578 WB_END
1579
1580 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1581 return (jlong)Metaspace::reserve_alignment();
1582 WB_END
1583
1584 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1585 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1586 Monitor::_safepoint_check_always :
1587 Monitor::_safepoint_check_never;
1588 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1589 attemptedNoSafepointValue == JNI_TRUE);
1590 WB_END
1591
1592 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1593 oop obj_oop = JNIHandles::resolve(obj);
1594 return (jboolean) obj_oop->mark()->has_monitor();
1595 WB_END
1596
1597 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1598 VM_ForceSafepoint force_safepoint_op;
1599 VMThread::execute(&force_safepoint_op);
1600 WB_END
1601
1602 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1603 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1604 return (jlong) ik->constants();
1605 WB_END
1606
1607 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1608 return ConstantPool::CPCACHE_INDEX_TAG;
1609 WB_END
1610
1611 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1612 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1613 ConstantPool* cp = ik->constants();
1614 if (cp->cache() == NULL) {
1615 return -1;
1616 }
1617 return cp->cache()->length();
1618 WB_END
1619
1620 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1621 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1622 ConstantPool* cp = ik->constants();
1623 if (cp->cache() == NULL) {
1624 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1625 }
1626 jint cpci = index;
1627 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1628 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1629 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1630 }
1631 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1632 return cpi;
1633 WB_END
1634
1635 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1636 return ConstantPool::encode_invokedynamic_index(index);
1637 WB_END
1638
1639 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1640 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1641 VMThread::execute(&clear_ics);
1642 WB_END
1643
1644 template <typename T>
1645 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1646 assert(value != NULL, "sanity");
1647 if (method == NULL || name == NULL) {
1648 return false;
1649 }
1650 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1651 CHECK_JNI_EXCEPTION_(env, false);
1652 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1653 // can't be in VM when we call JNI
1654 ThreadToNativeFromVM ttnfv(thread);
1655 const char* flag_name = env->GetStringUTFChars(name, NULL);
1656 CHECK_JNI_EXCEPTION_(env, false);
1657 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1658 env->ReleaseStringUTFChars(name, flag_name);
1659 return result;
1660 }
1661
1662 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1663 bool result;
1664 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1665 // can't be in VM when we call JNI
1666 ThreadToNativeFromVM ttnfv(thread);
1667 return booleanBox(thread, env, result);
1668 }
1669 return NULL;
1670 WB_END
1671
1672 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1673 intx result;
1674 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1675 // can't be in VM when we call JNI
1676 ThreadToNativeFromVM ttnfv(thread);
1677 return longBox(thread, env, result);
1678 }
1679 return NULL;
1680 WB_END
1681
1682 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1683 uintx result;
1684 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1685 // can't be in VM when we call JNI
1686 ThreadToNativeFromVM ttnfv(thread);
1687 return longBox(thread, env, result);
1688 }
1689 return NULL;
1690 WB_END
1691
1692 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1693 double result;
1694 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1695 // can't be in VM when we call JNI
1696 ThreadToNativeFromVM ttnfv(thread);
1697 return doubleBox(thread, env, result);
1698 }
1699 return NULL;
1700 WB_END
1701
1702 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1703 ccstr ccstrResult;
1704 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1705 // can't be in VM when we call JNI
1706 ThreadToNativeFromVM ttnfv(thread);
1707 jstring result = env->NewStringUTF(ccstrResult);
1708 CHECK_JNI_EXCEPTION_(env, NULL);
1709 return result;
1710 }
1711 return NULL;
1712 WB_END
1713
1714 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1715 oop obj_oop = JNIHandles::resolve(obj);
1716 return oopDesc::is_archive_object(obj_oop);
1717 WB_END
1718
1719 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1720 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1721 WB_END
1722
1723 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1724 return !StringTable::shared_string_mapped();
1725 WB_END
1726
1727 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1728 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1729 if (k->is_instance_klass()) {
1730 InstanceKlass *ik = InstanceKlass::cast(k);
1731 ConstantPool *cp = ik->constants();
1732 objArrayOop refs = cp->resolved_references();
1733 return (jobject)JNIHandles::make_local(env, refs);
1734 } else {
1735 return NULL;
1736 }
1737 WB_END
1738
1739 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1740 return MetaspaceShared::open_archive_heap_region_mapped();
1741 WB_END
1742
1743 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1744 #if INCLUDE_CDS
1745 # ifdef _LP64
1746 if (!UseCompressedOops || !UseCompressedClassPointers) {
1747 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1748 return false;
1749 }
1750 # endif // _LP64
1751 return true;
1752 #else
1753 return false;
1754 #endif // INCLUDE_CDS
1755 WB_END
1756
1757 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1758 return MetaspaceShared::is_heap_object_archiving_allowed();
1759 WB_END
1760
1761
1762 #if INCLUDE_CDS
1763
1764 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1765 ResourceMark rm;
1766 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1767 int result = CDSOffsets::find_offset(c_name);
1768 return (jint)result;
1769 WB_END
1770
1771 #endif // INCLUDE_CDS
1772
1773 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1774 class TraceSelfClosure : public ThreadClosure {
1775 jint _num_threads_completed;
1776
1777 void do_thread(Thread* th) {
1778 assert(th->is_Java_thread(), "sanity");
1779 JavaThread* jt = (JavaThread*)th;
1780 ResourceMark rm;
1781
1782 jt->print_on(tty);
1783 jt->print_stack_on(tty);
1784 tty->cr();
1785 Atomic::inc(&_num_threads_completed);
1786 }
1787
1788 public:
1789 TraceSelfClosure() : _num_threads_completed(0) {}
1790
1791 jint num_threads_completed() const { return _num_threads_completed; }
1792 };
1793 TraceSelfClosure tsc;
1794
1795 if (all_threads) {
1796 Handshake::execute(&tsc);
1797 } else {
1798 oop thread_oop = JNIHandles::resolve(thread_handle);
1799 if (thread_oop != NULL) {
1800 JavaThread* target = java_lang_Thread::thread(thread_oop);
1801 Handshake::execute(&tsc, target);
1802 }
1803 }
1804 return tsc.num_threads_completed();
1805 WB_END
1806
1807 //Some convenience methods to deal with objects from java
1808 int WhiteBox::offset_for_field(const char* field_name, oop object,
1809 Symbol* signature_symbol) {
1810 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1811 Thread* THREAD = Thread::current();
1812
1813 //Get the class of our object
1814 Klass* arg_klass = object->klass();
1815 //Turn it into an instance-klass
1816 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1817
1818 //Create symbols to look for in the class
1819 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1820 THREAD);
1821
1822 //To be filled in with an offset of the field we're looking for
1823 fieldDescriptor fd;
1824
1825 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1826 if (res == NULL) {
1827 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1828 name_symbol->as_C_string());
1829 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1830 }
1831
1832 //fetch the field at the offset we've found
1833 int dest_offset = fd.offset();
1834
1835 return dest_offset;
1836 }
1837
1838
1839 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1840 int offset = offset_for_field(field_name, object,
1841 vmSymbols::string_signature());
1842 oop string = object->obj_field(offset);
1843 if (string == NULL) {
1844 return NULL;
1845 }
1846 const char* ret = java_lang_String::as_utf8_string(string);
1847 return ret;
1848 }
1849
1850 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1851 int offset =
1852 offset_for_field(field_name, object, vmSymbols::bool_signature());
1853 bool ret = (object->bool_field(offset) == JNI_TRUE);
1854 return ret;
1855 }
1856
1857 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1858 ResourceMark rm;
1859 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1860
1861 // one by one registration natives for exception catching
1862 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1863 CHECK_JNI_EXCEPTION(env);
1864 for (int i = 0, n = method_count; i < n; ++i) {
1865 // Skip dummy entries
1866 if (method_array[i].fnPtr == NULL) continue;
1867 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1868 jthrowable throwable_obj = env->ExceptionOccurred();
1869 if (throwable_obj != NULL) {
1870 env->ExceptionClear();
1871 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1872 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1873 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1874 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1875 method_array[i].name, method_array[i].signature);
1876 }
1877 } else {
1878 // Registration failed unexpectedly.
1879 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1880 method_array[i].name, method_array[i].signature);
1881 env->UnregisterNatives(wbclass);
1882 break;
1883 }
1884 }
1885 }
1886 }
1887
1888 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1889 // can't be in VM when we call JNI
1890 ThreadToNativeFromVM ttnfv(thread);
1891 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1892 CHECK_JNI_EXCEPTION_(env, 0);
1893 int ret;
1894 {
1895 ThreadInVMfromNative ttvfn(thread); // back to VM
1896 ret = DirectivesParser::parse_string(dir, tty);
1897 }
1898 env->ReleaseStringUTFChars(compDirect, dir);
1899 // -1 for error parsing directive. Return 0 as number of directives added.
1900 if (ret == -1) {
1901 ret = 0;
1902 }
1903 return (jint) ret;
1904 WB_END
1905
1906 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1907 DirectivesStack::pop(count);
1908 WB_END
1909
1910 // Checks that the library libfile has the noexecstack bit set.
1911 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1912 jboolean ret = false;
1913 #ifdef LINUX
1914 // Can't be in VM when we call JNI.
1915 ThreadToNativeFromVM ttnfv(thread);
1916 const char* lf = env->GetStringUTFChars(libfile, NULL);
1917 CHECK_JNI_EXCEPTION_(env, 0);
1918 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1919 env->ReleaseStringUTFChars(libfile, lf);
1920 #endif
1921 return ret;
1922 WB_END
1923
1924 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1925 LINUX_ONLY(return OSContainer::is_containerized();)
1926 return false;
1927 WB_END
1928
1929 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1930 os::print_os_info(tty);
1931 WB_END
1932
1933 // Elf decoder
1934 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1935 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1936 ElfFile::_do_not_cache_elf_section = true;
1937 #endif
1938 WB_END
1939
1940
1941 #define CC (char*)
1942
1943 static JNINativeMethod methods[] = {
1944 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1945 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1946 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1947 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1948 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1949 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1950 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1951 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1952 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1953 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1954 {CC"parseCommandLine0",
1955 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1956 (void*) &WB_ParseCommandLine
1957 },
1958 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1959 (void*)&WB_AddToBootstrapClassLoaderSearch},
1960 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1961 (void*)&WB_AddToSystemClassLoaderSearch},
1962 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1963 (void*)&WB_GetCompressedOopsMaxHeapSize},
1964 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1965 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1966 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1967 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1968 #if INCLUDE_CDS
1969 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1970 #endif
1971 #if INCLUDE_G1GC
1972 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1973 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1974 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1975 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1976 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1977 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1978 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1979 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1980 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1981 (void*)&WB_G1AuxiliaryMemoryUsage },
1982 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1983 #endif // INCLUDE_G1GC
1984 #if INCLUDE_PARALLELGC
1985 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1986 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1987 #endif
1988 #if INCLUDE_NMT
1989 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1990 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1991 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1992 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1993 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
1994 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1995 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1996 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1997 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1998 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1999 #endif // INCLUDE_NMT
2000 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2001 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2002 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2003 (void*)&WB_DeoptimizeMethod },
2004 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2005 (void*)&WB_IsMethodCompiled },
2006 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2007 (void*)&WB_IsMethodCompilable},
2008 {CC"isMethodQueuedForCompilation0",
2009 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2010 {CC"isIntrinsicAvailable0",
2011 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2012 (void*)&WB_IsIntrinsicAvailable},
2013 {CC"makeMethodNotCompilable0",
2014 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2015 {CC"testSetDontInlineMethod0",
2016 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2017 {CC"getMethodCompilationLevel0",
2018 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2019 {CC"getMethodEntryBci0",
2020 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2021 {CC"getCompileQueueSize",
2022 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2023 {CC"testSetForceInlineMethod0",
2024 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2025 {CC"enqueueMethodForCompilation0",
2026 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2027 {CC"enqueueInitializerForCompilation0",
2028 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2029 {CC"clearMethodState0",
2030 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2031 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2032 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2033 {CC"matchesMethod",
2034 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2035 (void*)&WB_MatchesMethod},
2036 {CC"matchesInline",
2037 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2038 (void*)&WB_MatchesInline},
2039 {CC"shouldPrintAssembly",
2040 CC"(Ljava/lang/reflect/Executable;I)Z",
2041 (void*)&WB_ShouldPrintAssembly},
2042
2043 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2044 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2045 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2046 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2047 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2048 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2049 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2050 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2051 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2052 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2053 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2054 (void*)&WB_SetStringVMFlag},
2055 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2056 (void*)&WB_GetBooleanVMFlag},
2057 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2058 (void*)&WB_GetIntVMFlag},
2059 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2060 (void*)&WB_GetUintVMFlag},
2061 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2062 (void*)&WB_GetIntxVMFlag},
2063 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2064 (void*)&WB_GetUintxVMFlag},
2065 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2066 (void*)&WB_GetUint64VMFlag},
2067 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2068 (void*)&WB_GetSizeTVMFlag},
2069 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2070 (void*)&WB_GetDoubleVMFlag},
2071 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2072 (void*)&WB_GetStringVMFlag},
2073 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2074 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2075 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2076 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2077 {CC"allocateMetaspace",
2078 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2079 {CC"freeMetaspace",
2080 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2081 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2082 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2083 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2084 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2085 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2086 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2087 (void*)&WB_GetNMethod },
2088 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2089 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2090 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2091 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2092 {CC"getCompilationActivityMode",
2093 CC"()I", (void*)&WB_GetCompilationActivityMode},
2094 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2095 (void*)&WB_GetMethodData },
2096 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2097 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2098 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2099 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2100 (void*)&WB_DefineModule },
2101 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2102 (void*)&WB_AddModuleExports },
2103 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2104 (void*)&WB_AddReadsModule },
2105 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2106 (void*)&WB_AddModuleExportsToAllUnnamed },
2107 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2108 (void*)&WB_AddModuleExportsToAll },
2109 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2110 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2111 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2112 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2113 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2114 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2115 {CC"remapInstructionOperandFromCPCache0",
2116 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2117 {CC"encodeConstantPoolIndyIndex0",
2118 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2119 {CC"getMethodBooleanOption",
2120 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2121 (void*)&WB_GetMethodBooleaneOption},
2122 {CC"getMethodIntxOption",
2123 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2124 (void*)&WB_GetMethodIntxOption},
2125 {CC"getMethodUintxOption",
2126 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2127 (void*)&WB_GetMethodUintxOption},
2128 {CC"getMethodDoubleOption",
2129 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2130 (void*)&WB_GetMethodDoubleOption},
2131 {CC"getMethodStringOption",
2132 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2133 (void*)&WB_GetMethodStringOption},
2134 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2135 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2136 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2137 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2138 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2139 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2140 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2141
2142 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2143 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2144 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2145 (void*)&WB_AddCompilerDirective },
2146 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2147 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2148 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2149 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2150 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2151 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2152 (void*)&WB_GetConcurrentGCPhases},
2153 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2154 (void*)&WB_RequestConcurrentGCPhase},
2155 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2156 (void*)&WB_CheckLibSpecifiesNoexecstack},
2157 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2158 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2159 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2160 };
2161
2162
2163 #undef CC
2164
2165 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2166 {
2167 if (WhiteBoxAPI) {
2168 // Make sure that wbclass is loaded by the null classloader
2169 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2170 Handle loader(THREAD, ik->class_loader());
2171 if (loader.is_null()) {
2172 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2173 WhiteBox::set_used();
2174 }
2175 }
2176 }
2177 JVM_END