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/classLoaderDataGraph.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/heapShared.inline.hpp"
40 #include "memory/metaspaceShared.hpp"
41 #include "memory/metadataFactory.hpp"
42 #include "memory/iterator.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "memory/universe.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/array.hpp"
47 #include "oops/constantPool.inline.hpp"
48 #include "oops/method.inline.hpp"
49 #include "oops/objArrayKlass.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "oops/typeArrayOop.inline.hpp"
53 #include "prims/resolvedMethodTable.hpp"
54 #include "prims/wbtestmethods/parserTests.hpp"
55 #include "prims/whitebox.inline.hpp"
56 #include "runtime/arguments.hpp"
57 #include "runtime/compilationPolicy.hpp"
58 #include "runtime/deoptimization.hpp"
59 #include "runtime/fieldDescriptor.inline.hpp"
60 #include "runtime/flags/jvmFlag.hpp"
61 #include "runtime/frame.inline.hpp"
62 #include "runtime/handshake.hpp"
63 #include "runtime/interfaceSupport.inline.hpp"
64 #include "runtime/javaCalls.hpp"
65 #include "runtime/jniHandles.inline.hpp"
66 #include "runtime/os.hpp"
67 #include "runtime/sweeper.hpp"
68 #include "runtime/thread.hpp"
69 #include "runtime/threadSMR.hpp"
70 #include "runtime/vm_version.hpp"
71 #include "services/memoryService.hpp"
72 #include "utilities/align.hpp"
73 #include "utilities/debug.hpp"
74 #include "utilities/elfFile.hpp"
75 #include "utilities/exceptions.hpp"
76 #include "utilities/macros.hpp"
77 #if INCLUDE_CDS
78 #include "prims/cdsoffsets.hpp"
79 #endif // INCLUDE_CDS
80 #if INCLUDE_G1GC
81 #include "gc/g1/g1CollectedHeap.inline.hpp"
82 #include "gc/g1/g1ConcurrentMark.hpp"
83 #include "gc/g1/g1ConcurrentMarkThread.hpp"
84 #include "gc/g1/heapRegionRemSet.hpp"
85 #endif // INCLUDE_G1GC
86 #if INCLUDE_PARALLELGC
87 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
88 #include "gc/parallel/adjoiningGenerations.hpp"
89 #endif // INCLUDE_PARALLELGC
90 #if INCLUDE_NMT
91 #include "services/mallocSiteTable.hpp"
92 #include "services/memTracker.hpp"
93 #include "utilities/nativeCallStack.hpp"
94 #endif // INCLUDE_NMT
95
96 #ifdef LINUX
97 #include "osContainer_linux.hpp"
98 #endif
99
100 #define SIZE_T_MAX_VALUE ((size_t) -1)
101
102 #define CHECK_JNI_EXCEPTION_(env, value) \
103 do { \
104 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
105 THREAD->clear_pending_jni_exception_check(); \
106 if (HAS_PENDING_EXCEPTION) { \
107 return(value); \
108 } \
109 } while (0)
110
111 #define CHECK_JNI_EXCEPTION(env) \
112 do { \
113 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
114 THREAD->clear_pending_jni_exception_check(); \
115 if (HAS_PENDING_EXCEPTION) { \
116 return; \
117 } \
118 } while (0)
119
120 bool WhiteBox::_used = false;
121 volatile bool WhiteBox::compilation_locked = false;
122
123 class VM_WhiteBoxOperation : public VM_Operation {
124 public:
125 VM_WhiteBoxOperation() { }
126 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
127 bool allow_nested_vm_operations() const { return true; }
128 };
129
130
131 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
132 return (jlong)(void*)JNIHandles::resolve(obj);
133 WB_END
134
135 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
136 return heapOopSize;
137 WB_END
138
139 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
140 return os::vm_page_size();
141 WB_END
142
143 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
144 return os::vm_allocation_granularity();
145 WB_END
146
147 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
148 return os::large_page_size();
149 WB_END
150
151 class WBIsKlassAliveClosure : public LockedClassesDo {
152 Symbol* _name;
153 bool _found;
154 public:
155 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
156
157 void do_klass(Klass* k) {
158 if (_found) return;
159 Symbol* ksym = k->name();
160 if (ksym->fast_compare(_name) == 0) {
161 _found = true;
162 }
163 }
164
165 bool found() const {
166 return _found;
167 }
168 };
169
170 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
171 oop h_name = JNIHandles::resolve(name);
172 if (h_name == NULL) return false;
173 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
174 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
175
176 WBIsKlassAliveClosure closure(sym);
177 ClassLoaderDataGraph::classes_do(&closure);
178
179 return closure.found();
180 WB_END
181
182 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
183 oop h_name = JNIHandles::resolve(name);
184 if (h_name == NULL) return false;
185 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_0);
186 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
187 return (jint)sym->refcount();
188 WB_END
189
190
191 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
192 #if INCLUDE_JVMTI
193 ResourceMark rm;
194 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
195 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
196 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
197 assert(err == JVMTI_ERROR_NONE, "must not fail");
198 #endif
199 }
200 WB_END
201
202 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
203 #if INCLUDE_JVMTI
204 ResourceMark rm;
205 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
206 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
207 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
208 assert(err == JVMTI_ERROR_NONE, "must not fail");
209 #endif
210 }
211 WB_END
212
213
214 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
215 return (jlong)Arguments::max_heap_for_compressed_oops();
216 }
217 WB_END
218
219 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
220 CollectorPolicy * p = Universe::heap()->collector_policy();
221 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
222 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
223 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
224 p->space_alignment(), p->heap_alignment());
225 }
226 WB_END
227
228 #ifndef PRODUCT
229 // Forward declaration
230 void TestReservedSpace_test();
231 void TestReserveMemorySpecial_test();
232 void TestVirtualSpace_test();
233 void TestMetaspaceUtils_test();
234 #endif
235
236 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
237 #ifndef PRODUCT
238 TestReservedSpace_test();
239 TestReserveMemorySpecial_test();
240 TestVirtualSpace_test();
241 TestMetaspaceUtils_test();
242 #endif
243 WB_END
244
245 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
246 size_t granularity = os::vm_allocation_granularity();
247 ReservedHeapSpace rhs(100 * granularity, granularity, false);
248 VirtualSpace vs;
249 vs.initialize(rhs, 50 * granularity);
250
251 // Check if constraints are complied
252 if (!( UseCompressedOops && rhs.base() != NULL &&
253 Universe::narrow_oop_base() != NULL &&
254 Universe::narrow_oop_use_implicit_null_checks() )) {
255 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
256 "\tUseCompressedOops is %d\n"
257 "\trhs.base() is " PTR_FORMAT "\n"
258 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
259 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
260 UseCompressedOops,
261 p2i(rhs.base()),
262 p2i(Universe::narrow_oop_base()),
263 Universe::narrow_oop_use_implicit_null_checks());
264 return;
265 }
266 tty->print_cr("Reading from no access area... ");
267 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
268 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
269 WB_END
270
271 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
272 size_t magnitude, size_t iterations) {
273 size_t granularity = os::vm_allocation_granularity();
274 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
275 VirtualSpace vs;
276 if (!vs.initialize(rhs, 0)) {
277 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
278 return 3;
279 }
280
281 int seed = os::random();
282 tty->print_cr("Random seed is %d", seed);
283 os::init_random(seed);
284
285 for (size_t i = 0; i < iterations; i++) {
286
287 // Whether we will shrink or grow
288 bool shrink = os::random() % 2L == 0;
289
290 // Get random delta to resize virtual space
291 size_t delta = (size_t)os::random() % magnitude;
292
293 // If we are about to shrink virtual space below zero, then expand instead
294 if (shrink && vs.committed_size() < delta) {
295 shrink = false;
296 }
297
298 // Resizing by delta
299 if (shrink) {
300 vs.shrink_by(delta);
301 } else {
302 // If expanding fails expand_by will silently return false
303 vs.expand_by(delta, true);
304 }
305 }
306 return 0;
307 }
308
309 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
310 jlong reserved_space_size, jlong magnitude, jlong iterations))
311 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
312 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
313 iterations);
314 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
315 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
316 return 1;
317 }
318
319 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
320 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
321 if (sizeof(size_t) < sizeof(jlong)) {
322 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
323 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
324 || iterations > size_t_max_value) {
325 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
326 return 2;
327 }
328 }
329
330 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
331 (size_t) magnitude, (size_t) iterations);
332 WB_END
333
334 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
335 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
336 WB_END
337
338 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
339 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
340 WB_END
341
342 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
343 return GCConfig::is_gc_selected_ergonomically();
344 WB_END
345
346 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
347 oop p = JNIHandles::resolve(obj);
348 #if INCLUDE_G1GC
349 if (UseG1GC) {
350 G1CollectedHeap* g1h = G1CollectedHeap::heap();
351 const HeapRegion* hr = g1h->heap_region_containing(p);
352 if (hr == NULL) {
353 return false;
354 }
355 return !(hr->is_young());
356 }
357 #endif
358 #if INCLUDE_PARALLELGC
359 if (UseParallelGC) {
360 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
361 return !psh->is_in_young(p);
362 }
363 #endif
364 #if INCLUDE_ZGC
365 if (UseZGC) {
366 return Universe::heap()->is_in(p);
367 }
368 #endif
369 GenCollectedHeap* gch = GenCollectedHeap::heap();
370 return !gch->is_in_young(p);
371 WB_END
372
373 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
374 oop p = JNIHandles::resolve(obj);
375 return Universe::heap()->obj_size(p) * HeapWordSize;
376 WB_END
377
378 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
379 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
380 return (jlong)alignment;
381 WB_END
382
383 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
384 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
385 return (jlong)alignment;
386 WB_END
387
388 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
389 return Universe::heap()->supports_concurrent_phase_control();
390 WB_END
391
392 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
393 const char* const* phases = Universe::heap()->concurrent_phases();
394 jint nphases = 0;
395 for ( ; phases[nphases] != NULL; ++nphases) ;
396
397 ResourceMark rm(thread);
398 ThreadToNativeFromVM ttn(thread);
399 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
400 CHECK_JNI_EXCEPTION_(env, NULL);
401
402 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
403 CHECK_JNI_EXCEPTION_(env, NULL);
404
405 // If push fails, return with pending exception.
406 if (env->PushLocalFrame(nphases) < 0) return NULL;
407 for (jint i = 0; i < nphases; ++i) {
408 jstring phase = env->NewStringUTF(phases[i]);
409 CHECK_JNI_EXCEPTION_(env, NULL);
410 env->SetObjectArrayElement(result, i, phase);
411 CHECK_JNI_EXCEPTION_(env, NULL);
412 }
413 env->PopLocalFrame(NULL);
414
415 return result;
416 WB_END
417
418 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
419 Handle h_name(THREAD, JNIHandles::resolve(name));
420 ResourceMark rm;
421 const char* c_name = java_lang_String::as_utf8_string(h_name());
422 return Universe::heap()->request_concurrent_phase(c_name);
423 WB_END
424
425 #if INCLUDE_G1GC
426
427 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
428 if (UseG1GC) {
429 G1CollectedHeap* g1h = G1CollectedHeap::heap();
430 oop result = JNIHandles::resolve(obj);
431 const HeapRegion* hr = g1h->heap_region_containing(result);
432 return hr->is_humongous();
433 }
434 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
435 WB_END
436
437 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
438 if (UseG1GC) {
439 G1CollectedHeap* g1h = G1CollectedHeap::heap();
440 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
441 return hr->is_humongous();
442 }
443 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
444 WB_END
445
446 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
447 if (UseG1GC) {
448 G1CollectedHeap* g1h = G1CollectedHeap::heap();
449 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
450 return hr->is_free();
451 }
452 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
453 WB_END
454
455 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
456 if (UseG1GC) {
457 G1CollectedHeap* g1h = G1CollectedHeap::heap();
458 size_t nr = g1h->max_regions();
459 return (jlong)nr;
460 }
461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
462 WB_END
463
464 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
465 if (UseG1GC) {
466 G1CollectedHeap* g1h = G1CollectedHeap::heap();
467 size_t nr = g1h->num_free_regions();
468 return (jlong)nr;
469 }
470 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
471 WB_END
472
473 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
474 if (UseG1GC) {
475 G1CollectedHeap* g1h = G1CollectedHeap::heap();
476 return g1h->concurrent_mark()->cm_thread()->during_cycle();
477 }
478 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
479 WB_END
480
481 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
482 if (UseG1GC) {
483 G1CollectedHeap* g1h = G1CollectedHeap::heap();
484 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
485 g1h->collect(GCCause::_wb_conc_mark);
486 return true;
487 }
488 return false;
489 }
490 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
491 WB_END
492
493 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
494 if (UseG1GC) {
495 return (jint)HeapRegion::GrainBytes;
496 }
497 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
498 WB_END
499
500 #endif // INCLUDE_G1GC
501
502 #if INCLUDE_PARALLELGC
503
504 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
505 if (UseParallelGC) {
506 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
507 }
508 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
509 WB_END
510
511 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
512 if (UseParallelGC) {
513 return ParallelScavengeHeap::heap()->generation_alignment();
514 }
515 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
516 WB_END
517
518 #endif // INCLUDE_PARALLELGC
519
520 #if INCLUDE_G1GC
521
522 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
523 if (UseG1GC) {
524 ResourceMark rm(THREAD);
525 G1CollectedHeap* g1h = G1CollectedHeap::heap();
526 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
527 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
528 return JNIHandles::make_local(env, h());
529 }
530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
531 WB_END
532
533 class OldRegionsLivenessClosure: public HeapRegionClosure {
534
535 private:
536 const int _liveness;
537 size_t _total_count;
538 size_t _total_memory;
539 size_t _total_memory_to_free;
540
541 public:
542 OldRegionsLivenessClosure(int liveness) :
543 _liveness(liveness),
544 _total_count(0),
545 _total_memory(0),
546 _total_memory_to_free(0) { }
547
548 size_t total_count() { return _total_count; }
549 size_t total_memory() { return _total_memory; }
550 size_t total_memory_to_free() { return _total_memory_to_free; }
551
552 bool do_heap_region(HeapRegion* r) {
553 if (r->is_old()) {
554 size_t prev_live = r->marked_bytes();
555 size_t live = r->live_bytes();
556 size_t size = r->used();
557 size_t reg_size = HeapRegion::GrainBytes;
558 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
559 _total_memory += size;
560 ++_total_count;
561 if (size == reg_size) {
562 // we don't include non-full regions since they are unlikely included in mixed gc
563 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
564 _total_memory_to_free += size - prev_live;
565 }
566 }
567 }
568 return false;
569 }
570 };
571
572
573 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
574 if (!UseG1GC) {
575 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
576 }
577 if (liveness < 0) {
578 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
579 }
580
581 G1CollectedHeap* g1h = G1CollectedHeap::heap();
582 OldRegionsLivenessClosure rli(liveness);
583 g1h->heap_region_iterate(&rli);
584
585 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
586 result->long_at_put(0, rli.total_count());
587 result->long_at_put(1, rli.total_memory());
588 result->long_at_put(2, rli.total_memory_to_free());
589 return (jlongArray) JNIHandles::make_local(env, result);
590 WB_END
591
592 #endif // INCLUDE_G1GC
593
594 #if INCLUDE_NMT
595 // Alloc memory using the test memory type so that we can use that to see if
596 // NMT picks it up correctly
597 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
598 jlong addr = 0;
599 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
600 return addr;
601 WB_END
602
603 // Alloc memory with pseudo call stack. The test can create psudo malloc
604 // allocation site to stress the malloc tracking.
605 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
606 address pc = (address)(size_t)pseudo_stack;
607 NativeCallStack stack(&pc, 1);
608 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
609 WB_END
610
611 // Free the memory allocated by NMTAllocTest
612 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
613 os::free((void*)(uintptr_t)mem);
614 WB_END
615
616 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
617 jlong addr = 0;
618
619 addr = (jlong)(uintptr_t)os::reserve_memory(size);
620 MemTracker::record_virtual_memory_type((address)addr, mtTest);
621
622 return addr;
623 WB_END
624
625 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
626 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
627 MemTracker::record_virtual_memory_type((address)addr, mtTest);
628
629 return addr;
630 WB_END
631
632 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
633 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
634 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
635 WB_END
636
637 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
638 os::uncommit_memory((char *)(uintptr_t)addr, size);
639 WB_END
640
641 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
642 os::release_memory((char *)(uintptr_t)addr, size);
643 WB_END
644
645 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
646 // Test that we can downgrade NMT levels but not upgrade them.
647 if (MemTracker::tracking_level() == NMT_off) {
648 MemTracker::transition_to(NMT_off);
649 return MemTracker::tracking_level() == NMT_off;
650 } else {
651 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
652 MemTracker::transition_to(NMT_summary);
653 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
654
655 // Can't go to detail once NMT is set to summary.
656 MemTracker::transition_to(NMT_detail);
657 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
658
659 // Shutdown sets tracking level to minimal.
660 MemTracker::shutdown();
661 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
662
663 // Once the tracking level is minimal, we cannot increase to summary.
664 // The code ignores this request instead of asserting because if the malloc site
665 // table overflows in another thread, it tries to change the code to summary.
666 MemTracker::transition_to(NMT_summary);
667 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
668
669 // Really can never go up to detail, verify that the code would never do this.
670 MemTracker::transition_to(NMT_detail);
671 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
672 return MemTracker::tracking_level() == NMT_minimal;
673 }
674 WB_END
675
676 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
677 int hash_size = MallocSiteTable::hash_buckets();
678 assert(hash_size > 0, "NMT hash_size should be > 0");
679 return (jint)hash_size;
680 WB_END
681 #endif // INCLUDE_NMT
682
683 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
684 assert(method != NULL, "method should not be null");
685 ThreadToNativeFromVM ttn(thread);
686 return env->FromReflectedMethod(method);
687 }
688
689 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
690 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
691 private:
692 int _result;
693 const bool _make_not_entrant;
694 public:
695 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
696 _result(0), _make_not_entrant(make_not_entrant) { }
697 int result() const { return _result; }
698
699 void doit() {
700 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
701 if (t->has_last_Java_frame()) {
702 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
703 frame* f = fst.current();
704 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
705 RegisterMap* reg_map = fst.register_map();
706 Deoptimization::deoptimize(t, *f, reg_map);
707 if (_make_not_entrant) {
708 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
709 assert(cm != NULL, "sanity check");
710 cm->make_not_entrant();
711 }
712 ++_result;
713 }
714 }
715 }
716 }
717 }
718 };
719
720 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
721 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
722 VMThread::execute(&op);
723 return op.result();
724 WB_END
725
726 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
727 MutexLockerEx mu(Compile_lock);
728 CodeCache::mark_all_nmethods_for_deoptimization();
729 VM_Deoptimize op;
730 VMThread::execute(&op);
731 WB_END
732
733 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
734 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
735 int result = 0;
736 CHECK_JNI_EXCEPTION_(env, result);
737 MutexLockerEx mu(Compile_lock);
738 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
739 if (is_osr) {
740 result += mh->mark_osr_nmethods();
741 } else if (mh->code() != NULL) {
742 mh->code()->mark_for_deoptimization();
743 ++result;
744 }
745 result += CodeCache::mark_for_deoptimization(mh());
746 if (result > 0) {
747 VM_Deoptimize op;
748 VMThread::execute(&op);
749 }
750 return result;
751 WB_END
752
753 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
754 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
755 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
756 MutexLockerEx mu(Compile_lock);
757 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
758 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
759 if (code == NULL) {
760 return JNI_FALSE;
761 }
762 return (code->is_alive() && !code->is_marked_for_deoptimization());
763 WB_END
764
765 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
766 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
767 return false;
768 }
769 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
770 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
771 MutexLockerEx mu(Compile_lock);
772 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
773 if (is_osr) {
774 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
775 } else {
776 return CompilationPolicy::can_be_compiled(mh, comp_level);
777 }
778 WB_END
779
780 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
781 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
782 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
783 MutexLockerEx mu(Compile_lock);
784 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
785 return mh->queued_for_compilation();
786 WB_END
787
788 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
789 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
790 return false; // Intrinsic is not available on a non-existent compilation level.
791 }
792 jmethodID method_id, compilation_context_id;
793 method_id = reflected_method_to_jmid(thread, env, method);
794 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
795 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
796
797 DirectiveSet* directive;
798 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
799 assert(comp != NULL, "compiler not available");
800 if (compilation_context != NULL) {
801 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
802 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
803 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
804 directive = DirectivesStack::getMatchingDirective(cch, comp);
805 } else {
806 // Calling with NULL matches default directive
807 directive = DirectivesStack::getDefaultDirective(comp);
808 }
809 bool result = comp->is_intrinsic_available(mh, directive);
810 DirectivesStack::release(directive);
811 return result;
812 WB_END
813
814 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
815 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
816 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
817 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
818 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
819 return (code != NULL ? code->comp_level() : CompLevel_none);
820 WB_END
821
822 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
823 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
824 CHECK_JNI_EXCEPTION(env);
825 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
826 if (is_osr) {
827 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
828 } else {
829 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
830 }
831 WB_END
832
833 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
834 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
835 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
836 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
837 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
838 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
839 WB_END
840
841 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
842 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
843 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
845 bool result = mh->dont_inline();
846 mh->set_dont_inline(value == JNI_TRUE);
847 return result;
848 WB_END
849
850 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
851 if (comp_level == CompLevel_any) {
852 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
853 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
854 } else {
855 return CompileBroker::queue_size(comp_level);
856 }
857 WB_END
858
859 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
860 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
861 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
862 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
863 bool result = mh->force_inline();
864 mh->set_force_inline(value == JNI_TRUE);
865 return result;
866 WB_END
867
868 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
869 // Screen for unavailable/bad comp level or null method
870 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
871 if (method == NULL) {
872 tty->print_cr("WB error: request to compile NULL method");
873 return false;
874 }
875 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
876 tty->print_cr("WB error: invalid compilation level %d", comp_level);
877 return false;
878 }
879 if (comp == NULL) {
880 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
881 return false;
882 }
883
884 // Check if compilation is blocking
885 methodHandle mh(THREAD, method);
886 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
887 bool is_blocking = !directive->BackgroundCompilationOption;
888 DirectivesStack::release(directive);
889
890 // Compile method and check result
891 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
892 MutexLockerEx mu(Compile_lock);
893 bool is_queued = mh->queued_for_compilation();
894 if ((!is_blocking && is_queued) || nm != NULL) {
895 return true;
896 }
897 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
898 mh->print_short_name(tty);
899 tty->cr();
900 if (is_blocking && is_queued) {
901 tty->print_cr("WB error: blocking compilation is still in queue!");
902 }
903 return false;
904 }
905
906 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
907 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
909 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
910 WB_END
911
912 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
913 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
914 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
915 WB_END
916
917 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
918 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
919 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
920
921 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
922 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
923 bool result = directive->PrintAssemblyOption;
924 DirectivesStack::release(directive);
925
926 return result;
927 WB_END
928
929 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
930 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
931 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
932
933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
934
935 ResourceMark rm;
936 const char* error_msg = NULL;
937 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
938 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
939
940 if (m == NULL) {
941 assert(error_msg != NULL, "Always have an error message");
942 tty->print_cr("Got error: %s", error_msg);
943 return -1; // Pattern failed
944 }
945
946 // Pattern works - now check if it matches
947 int result;
948 if (m->match(mh, InlineMatcher::force_inline)) {
949 result = 2; // Force inline match
950 } else if (m->match(mh, InlineMatcher::dont_inline)) {
951 result = 1; // Dont inline match
952 } else {
953 result = 0; // No match
954 }
955 delete m;
956 return result;
957 WB_END
958
959 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
960 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
961 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
962
963 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
964
965 ResourceMark rm;
966 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
967
968 const char* error_msg = NULL;
969
970 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
971 if (m == NULL) {
972 assert(error_msg != NULL, "Must have error_msg");
973 tty->print_cr("Got error: %s", error_msg);
974 return -1;
975 }
976
977 // Pattern works - now check if it matches
978 int result = m->matches(mh);
979 delete m;
980 assert(result == 0 || result == 1, "Result out of range");
981 return result;
982 WB_END
983
984 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
985 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
986 CHECK_JNI_EXCEPTION(env);
987 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
988 MutexLockerEx mu(Compile_lock);
989 MethodData* mdo = mh->method_data();
990 MethodCounters* mcs = mh->method_counters();
991
992 if (mdo != NULL) {
993 mdo->init();
994 ResourceMark rm;
995 int arg_count = mdo->method()->size_of_parameters();
996 for (int i = 0; i < arg_count; i++) {
997 mdo->set_arg_modified(i, 0);
998 }
999 MutexLockerEx mu(mdo->extra_data_lock());
1000 mdo->clean_method_data(/*always_clean*/true);
1001 }
1002
1003 mh->clear_not_c1_compilable();
1004 mh->clear_not_c2_compilable();
1005 mh->clear_not_c2_osr_compilable();
1006 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1007 if (mcs != NULL) {
1008 mcs->backedge_counter()->init();
1009 mcs->invocation_counter()->init();
1010 mcs->set_interpreter_invocation_count(0);
1011 mcs->set_interpreter_throwout_count(0);
1012
1013 #ifdef TIERED
1014 mcs->set_rate(0.0F);
1015 mh->set_prev_event_count(0);
1016 mh->set_prev_time(0);
1017 #endif
1018 }
1019 WB_END
1020
1021 template <typename T>
1022 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1023 if (name == NULL) {
1024 return false;
1025 }
1026 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1027 const char* flag_name = env->GetStringUTFChars(name, NULL);
1028 CHECK_JNI_EXCEPTION_(env, false);
1029 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1030 env->ReleaseStringUTFChars(name, flag_name);
1031 return (result == JVMFlag::SUCCESS);
1032 }
1033
1034 template <typename T>
1035 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1036 if (name == NULL) {
1037 return false;
1038 }
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, false);
1042 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1043 env->ReleaseStringUTFChars(name, flag_name);
1044 return (result == JVMFlag::SUCCESS);
1045 }
1046
1047 template <typename T>
1048 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1049 ResourceMark rm(thread);
1050 jclass clazz = env->FindClass(name->as_C_string());
1051 CHECK_JNI_EXCEPTION_(env, NULL);
1052 jmethodID methodID = env->GetStaticMethodID(clazz,
1053 vmSymbols::valueOf_name()->as_C_string(),
1054 sig->as_C_string());
1055 CHECK_JNI_EXCEPTION_(env, NULL);
1056 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1057 CHECK_JNI_EXCEPTION_(env, NULL);
1058 return result;
1059 }
1060
1061 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1062 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1063 }
1064 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1065 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1066 }
1067 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1068 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1069 }
1070 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1071 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1072 }*/
1073 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1074 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1075 }
1076
1077 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1078 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1079 const char* flag_name = env->GetStringUTFChars(name, NULL);
1080 CHECK_JNI_EXCEPTION_(env, NULL);
1081 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1082 env->ReleaseStringUTFChars(name, flag_name);
1083 return result;
1084 }
1085
1086 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1087 JVMFlag* flag = getVMFlag(thread, env, name);
1088 return (flag != NULL) && flag->is_constant_in_binary();
1089 WB_END
1090
1091 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1092 JVMFlag* flag = getVMFlag(thread, env, name);
1093 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1094 WB_END
1095
1096 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1097 bool result;
1098 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1099 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1100 return booleanBox(thread, env, result);
1101 }
1102 return NULL;
1103 WB_END
1104
1105 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1106 int result;
1107 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1108 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1109 return longBox(thread, env, result);
1110 }
1111 return NULL;
1112 WB_END
1113
1114 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1115 uint result;
1116 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1117 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1118 return longBox(thread, env, result);
1119 }
1120 return NULL;
1121 WB_END
1122
1123 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1124 intx result;
1125 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1126 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1127 return longBox(thread, env, result);
1128 }
1129 return NULL;
1130 WB_END
1131
1132 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1133 uintx result;
1134 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1135 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1136 return longBox(thread, env, result);
1137 }
1138 return NULL;
1139 WB_END
1140
1141 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1142 uint64_t result;
1143 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1144 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1145 return longBox(thread, env, result);
1146 }
1147 return NULL;
1148 WB_END
1149
1150 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1151 size_t result;
1152 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1153 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1154 return longBox(thread, env, result);
1155 }
1156 return NULL;
1157 WB_END
1158
1159 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1160 double result;
1161 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1162 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1163 return doubleBox(thread, env, result);
1164 }
1165 return NULL;
1166 WB_END
1167
1168 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1169 ccstr ccstrResult;
1170 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1171 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1172 jstring result = env->NewStringUTF(ccstrResult);
1173 CHECK_JNI_EXCEPTION_(env, NULL);
1174 return result;
1175 }
1176 return NULL;
1177 WB_END
1178
1179 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1180 bool result = value == JNI_TRUE ? true : false;
1181 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1182 WB_END
1183
1184 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1185 int result = value;
1186 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1187 WB_END
1188
1189 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1190 uint result = value;
1191 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1192 WB_END
1193
1194 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1195 intx result = value;
1196 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1197 WB_END
1198
1199 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1200 uintx result = value;
1201 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1202 WB_END
1203
1204 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1205 uint64_t result = value;
1206 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1207 WB_END
1208
1209 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1210 size_t result = value;
1211 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1212 WB_END
1213
1214 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1215 double result = value;
1216 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1217 WB_END
1218
1219 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1220 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1221 const char* ccstrValue;
1222 if (value == NULL) {
1223 ccstrValue = NULL;
1224 }
1225 else {
1226 ccstrValue = env->GetStringUTFChars(value, NULL);
1227 CHECK_JNI_EXCEPTION(env);
1228 }
1229 ccstr ccstrResult = ccstrValue;
1230 bool needFree;
1231 {
1232 ThreadInVMfromNative ttvfn(thread); // back to VM
1233 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1234 }
1235 if (value != NULL) {
1236 env->ReleaseStringUTFChars(value, ccstrValue);
1237 }
1238 if (needFree) {
1239 FREE_C_HEAP_ARRAY(char, ccstrResult);
1240 }
1241 WB_END
1242
1243 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1244 WhiteBox::compilation_locked = true;
1245 WB_END
1246
1247 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1248 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1249 WhiteBox::compilation_locked = false;
1250 mo.notify_all();
1251 WB_END
1252
1253 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1254 // Force a code cache sweep and block until it finished
1255 NMethodSweeper::force_sweep();
1256 WB_END
1257
1258 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1259 ResourceMark rm(THREAD);
1260 int len;
1261 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1262 return (StringTable::lookup(name, len) != NULL);
1263 WB_END
1264
1265 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1266 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1267 Universe::heap()->collect(GCCause::_wb_full_gc);
1268 #if INCLUDE_G1GC
1269 if (UseG1GC) {
1270 // Needs to be cleared explicitly for G1
1271 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1272 }
1273 #endif // INCLUDE_G1GC
1274 WB_END
1275
1276 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1277 Universe::heap()->collect(GCCause::_wb_young_gc);
1278 WB_END
1279
1280 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1281 // static+volatile in order to force the read to happen
1282 // (not be eliminated by the compiler)
1283 static char c;
1284 static volatile char* p;
1285
1286 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1287 if (p == NULL) {
1288 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1289 }
1290
1291 c = *p;
1292 WB_END
1293
1294 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1295 const char* features = VM_Version::features_string();
1296 ThreadToNativeFromVM ttn(thread);
1297 jstring features_string = env->NewStringUTF(features);
1298
1299 CHECK_JNI_EXCEPTION_(env, NULL);
1300
1301 return features_string;
1302 WB_END
1303
1304 int WhiteBox::get_blob_type(const CodeBlob* code) {
1305 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1306 if (code->is_aot()) {
1307 return -1;
1308 }
1309 return CodeCache::get_code_heap(code)->code_blob_type();
1310 }
1311
1312 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1313 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1314 return CodeCache::get_code_heap(blob_type);
1315 }
1316
1317 struct CodeBlobStub {
1318 CodeBlobStub(const CodeBlob* blob) :
1319 name(os::strdup(blob->name())),
1320 size(blob->size()),
1321 blob_type(WhiteBox::get_blob_type(blob)),
1322 address((jlong) blob) { }
1323 ~CodeBlobStub() { os::free((void*) name); }
1324 const char* const name;
1325 const jint size;
1326 const jint blob_type;
1327 const jlong address;
1328 };
1329
1330 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1331 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1332 CHECK_JNI_EXCEPTION_(env, NULL);
1333 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1334
1335 jstring name = env->NewStringUTF(cb->name);
1336 CHECK_JNI_EXCEPTION_(env, NULL);
1337 env->SetObjectArrayElement(result, 0, name);
1338
1339 jobject obj = integerBox(thread, env, cb->size);
1340 CHECK_JNI_EXCEPTION_(env, NULL);
1341 env->SetObjectArrayElement(result, 1, obj);
1342
1343 obj = integerBox(thread, env, cb->blob_type);
1344 CHECK_JNI_EXCEPTION_(env, NULL);
1345 env->SetObjectArrayElement(result, 2, obj);
1346
1347 obj = longBox(thread, env, cb->address);
1348 CHECK_JNI_EXCEPTION_(env, NULL);
1349 env->SetObjectArrayElement(result, 3, obj);
1350
1351 return result;
1352 }
1353
1354 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1355 ResourceMark rm(THREAD);
1356 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1357 CHECK_JNI_EXCEPTION_(env, NULL);
1358 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1359 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1360 jobjectArray result = NULL;
1361 if (code == NULL) {
1362 return result;
1363 }
1364 int comp_level = code->comp_level();
1365 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1366
1367 ThreadToNativeFromVM ttn(thread);
1368 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1369 CHECK_JNI_EXCEPTION_(env, NULL);
1370 result = env->NewObjectArray(5, clazz, NULL);
1371 if (result == NULL) {
1372 return result;
1373 }
1374
1375 CodeBlobStub stub(code);
1376 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1377 CHECK_JNI_EXCEPTION_(env, NULL);
1378 env->SetObjectArrayElement(result, 0, codeBlob);
1379
1380 jobject level = integerBox(thread, env, comp_level);
1381 CHECK_JNI_EXCEPTION_(env, NULL);
1382 env->SetObjectArrayElement(result, 1, level);
1383
1384 jbyteArray insts = env->NewByteArray(insts_size);
1385 CHECK_JNI_EXCEPTION_(env, NULL);
1386 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1387 env->SetObjectArrayElement(result, 2, insts);
1388
1389 jobject id = integerBox(thread, env, code->compile_id());
1390 CHECK_JNI_EXCEPTION_(env, NULL);
1391 env->SetObjectArrayElement(result, 3, id);
1392
1393 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1394 CHECK_JNI_EXCEPTION_(env, NULL);
1395 env->SetObjectArrayElement(result, 4, entry_point);
1396
1397 return result;
1398 WB_END
1399
1400 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1401 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1402 BufferBlob* blob;
1403 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1404 if (full_size < size) {
1405 full_size += align_up(size - full_size, oopSize);
1406 }
1407 {
1408 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1409 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1410 if (blob != NULL) {
1411 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1412 }
1413 }
1414 // Track memory usage statistic after releasing CodeCache_lock
1415 MemoryService::track_code_cache_memory_usage();
1416 return blob;
1417 }
1418
1419 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1420 if (size < 0) {
1421 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1422 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1423 }
1424 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1425 WB_END
1426
1427 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1428 if (addr == 0) {
1429 return;
1430 }
1431 BufferBlob::free((BufferBlob*) addr);
1432 WB_END
1433
1434 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1435 ResourceMark rm;
1436 GrowableArray<CodeBlobStub*> blobs;
1437 {
1438 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1439 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1440 if (heap == NULL) {
1441 return NULL;
1442 }
1443 for (CodeBlob* cb = (CodeBlob*) heap->first();
1444 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1445 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1446 new (stub) CodeBlobStub(cb);
1447 blobs.append(stub);
1448 }
1449 }
1450 if (blobs.length() == 0) {
1451 return NULL;
1452 }
1453 ThreadToNativeFromVM ttn(thread);
1454 jobjectArray result = NULL;
1455 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1456 CHECK_JNI_EXCEPTION_(env, NULL);
1457 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1458 CHECK_JNI_EXCEPTION_(env, NULL);
1459 if (result == NULL) {
1460 return result;
1461 }
1462 int i = 0;
1463 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1464 it != blobs.end(); ++it) {
1465 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1466 CHECK_JNI_EXCEPTION_(env, NULL);
1467 env->SetObjectArrayElement(result, i, obj);
1468 CHECK_JNI_EXCEPTION_(env, NULL);
1469 ++i;
1470 }
1471 return result;
1472 WB_END
1473
1474 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1475 return CompileBroker::get_compilation_activity_mode();
1476 WB_END
1477
1478 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1479 if (addr == 0) {
1480 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1481 "WB_GetCodeBlob: addr is null");
1482 }
1483 ThreadToNativeFromVM ttn(thread);
1484 CodeBlobStub stub((CodeBlob*) addr);
1485 return codeBlob2objectArray(thread, env, &stub);
1486 WB_END
1487
1488 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1489 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1490 CHECK_JNI_EXCEPTION_(env, 0);
1491 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1492 return (jlong) mh->method_data();
1493 WB_END
1494
1495 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1496 return (jlong) Thread::current()->stack_size();
1497 WB_END
1498
1499 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1500 JavaThread* t = JavaThread::current();
1501 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1502 WB_END
1503
1504
1505 int WhiteBox::array_bytes_to_length(size_t bytes) {
1506 return Array<u1>::bytes_to_length(bytes);
1507 }
1508
1509 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1510 if (size < 0) {
1511 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1512 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1513 }
1514
1515 oop class_loader_oop = JNIHandles::resolve(class_loader);
1516 ClassLoaderData* cld = class_loader_oop != NULL
1517 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1518 : ClassLoaderData::the_null_class_loader_data();
1519
1520 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1521
1522 return (jlong)(uintptr_t)metadata;
1523 WB_END
1524
1525 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1526 oop class_loader_oop = JNIHandles::resolve(class_loader);
1527 ClassLoaderData* cld = class_loader_oop != NULL
1528 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1529 : ClassLoaderData::the_null_class_loader_data();
1530
1531 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1532 WB_END
1533
1534 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1535 jstring version, jstring location, jobjectArray packages))
1536 ResourceMark rm(THREAD);
1537
1538 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1539 objArrayHandle packages_h(THREAD, packages_oop);
1540 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1541
1542 char** pkgs = NULL;
1543 if (num_packages > 0) {
1544 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1545 for (int x = 0; x < num_packages; x++) {
1546 oop pkg_str = packages_h->obj_at(x);
1547 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1548 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1549 err_msg("Bad package name"));
1550 }
1551 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1552 }
1553 }
1554 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1555 WB_END
1556
1557 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1558 ResourceMark rm(THREAD);
1559 char* package_name = NULL;
1560 if (package != NULL) {
1561 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1562 }
1563 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1564 WB_END
1565
1566 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1567 ResourceMark rm(THREAD);
1568 char* package_name = NULL;
1569 if (package != NULL) {
1570 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1571 }
1572 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1573 WB_END
1574
1575 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1576 ResourceMark rm(THREAD);
1577 char* package_name = NULL;
1578 if (package != NULL) {
1579 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1580 }
1581 Modules::add_module_exports(module, package_name, NULL, CHECK);
1582 WB_END
1583
1584 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1585 Modules::add_reads_module(from_module, source_module, CHECK);
1586 WB_END
1587
1588 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1589 if (inc < 0) {
1590 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1591 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1592 }
1593
1594 jlong max_size_t = (jlong) ((size_t) -1);
1595 if (inc > max_size_t) {
1596 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1597 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1598 }
1599
1600 size_t new_cap_until_GC = 0;
1601 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1602 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1603 if (!success) {
1604 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1605 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1606 "due to contention with another thread");
1607 }
1608 return (jlong) new_cap_until_GC;
1609 WB_END
1610
1611 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1612 return (jlong) MetaspaceGC::capacity_until_GC();
1613 WB_END
1614
1615 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1616 return MetaspaceGC::should_concurrent_collect();
1617 WB_END
1618
1619 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1620 return (jlong)Metaspace::reserve_alignment();
1621 WB_END
1622
1623 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1624 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1625 Monitor::_safepoint_check_always :
1626 Monitor::_safepoint_check_never;
1627 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1628 attemptedNoSafepointValue == JNI_TRUE);
1629 WB_END
1630
1631 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1632 oop obj_oop = JNIHandles::resolve(obj);
1633 return (jboolean) obj_oop->mark()->has_monitor();
1634 WB_END
1635
1636 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1637 VM_ForceSafepoint force_safepoint_op;
1638 VMThread::execute(&force_safepoint_op);
1639 WB_END
1640
1641 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1642 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1643 return (jlong) ik->constants();
1644 WB_END
1645
1646 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1647 return ConstantPool::CPCACHE_INDEX_TAG;
1648 WB_END
1649
1650 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1651 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1652 ConstantPool* cp = ik->constants();
1653 if (cp->cache() == NULL) {
1654 return -1;
1655 }
1656 return cp->cache()->length();
1657 WB_END
1658
1659 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1660 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1661 ConstantPool* cp = ik->constants();
1662 if (cp->cache() == NULL) {
1663 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1664 }
1665 jint cpci = index;
1666 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1667 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1668 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1669 }
1670 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1671 return cpi;
1672 WB_END
1673
1674 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1675 return ConstantPool::encode_invokedynamic_index(index);
1676 WB_END
1677
1678 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1679 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1680 VMThread::execute(&clear_ics);
1681 WB_END
1682
1683 template <typename T>
1684 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1685 assert(value != NULL, "sanity");
1686 if (method == NULL || name == NULL) {
1687 return false;
1688 }
1689 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1690 CHECK_JNI_EXCEPTION_(env, false);
1691 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1692 // can't be in VM when we call JNI
1693 ThreadToNativeFromVM ttnfv(thread);
1694 const char* flag_name = env->GetStringUTFChars(name, NULL);
1695 CHECK_JNI_EXCEPTION_(env, false);
1696 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1697 env->ReleaseStringUTFChars(name, flag_name);
1698 return result;
1699 }
1700
1701 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1702 bool result;
1703 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1704 // can't be in VM when we call JNI
1705 ThreadToNativeFromVM ttnfv(thread);
1706 return booleanBox(thread, env, result);
1707 }
1708 return NULL;
1709 WB_END
1710
1711 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1712 intx result;
1713 if (GetMethodOption <intx> (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_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1722 uintx result;
1723 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1724 // can't be in VM when we call JNI
1725 ThreadToNativeFromVM ttnfv(thread);
1726 return longBox(thread, env, result);
1727 }
1728 return NULL;
1729 WB_END
1730
1731 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1732 double result;
1733 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1734 // can't be in VM when we call JNI
1735 ThreadToNativeFromVM ttnfv(thread);
1736 return doubleBox(thread, env, result);
1737 }
1738 return NULL;
1739 WB_END
1740
1741 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1742 ccstr ccstrResult;
1743 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1744 // can't be in VM when we call JNI
1745 ThreadToNativeFromVM ttnfv(thread);
1746 jstring result = env->NewStringUTF(ccstrResult);
1747 CHECK_JNI_EXCEPTION_(env, NULL);
1748 return result;
1749 }
1750 return NULL;
1751 WB_END
1752
1753 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1754 const char* p = Arguments::get_default_shared_archive_path();
1755 ThreadToNativeFromVM ttn(thread);
1756 jstring path_string = env->NewStringUTF(p);
1757
1758 CHECK_JNI_EXCEPTION_(env, NULL);
1759
1760 return path_string;
1761 WB_END
1762
1763 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1764 return UseSharedSpaces;
1765 WB_END
1766
1767 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1768 oop obj_oop = JNIHandles::resolve(obj);
1769 return HeapShared::is_archived_object(obj_oop);
1770 WB_END
1771
1772 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1773 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1774 WB_END
1775
1776 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1777 return !StringTable::shared_string_mapped();
1778 WB_END
1779
1780 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1781 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1782 if (k->is_instance_klass()) {
1783 InstanceKlass *ik = InstanceKlass::cast(k);
1784 ConstantPool *cp = ik->constants();
1785 objArrayOop refs = cp->resolved_references();
1786 return (jobject)JNIHandles::make_local(env, refs);
1787 } else {
1788 return NULL;
1789 }
1790 WB_END
1791
1792 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1793 return HeapShared::open_archive_heap_region_mapped();
1794 WB_END
1795
1796 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1797 #if INCLUDE_CDS
1798 # ifdef _LP64
1799 if (!UseCompressedOops || !UseCompressedClassPointers) {
1800 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1801 return false;
1802 }
1803 # endif // _LP64
1804 return true;
1805 #else
1806 return false;
1807 #endif // INCLUDE_CDS
1808 WB_END
1809
1810 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1811 return HeapShared::is_heap_object_archiving_allowed();
1812 WB_END
1813
1814
1815 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1816 #if INCLUDE_JFR
1817 return true;
1818 #else
1819 return false;
1820 #endif // INCLUDE_JFR
1821 WB_END
1822
1823 #if INCLUDE_CDS
1824
1825 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1826 ResourceMark rm;
1827 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1828 int result = CDSOffsets::find_offset(c_name);
1829 return (jint)result;
1830 WB_END
1831
1832 #endif // INCLUDE_CDS
1833
1834 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1835 class TraceSelfClosure : public ThreadClosure {
1836 jint _num_threads_completed;
1837
1838 void do_thread(Thread* th) {
1839 assert(th->is_Java_thread(), "sanity");
1840 JavaThread* jt = (JavaThread*)th;
1841 ResourceMark rm;
1842
1843 jt->print_on(tty);
1844 jt->print_stack_on(tty);
1845 tty->cr();
1846 Atomic::inc(&_num_threads_completed);
1847 }
1848
1849 public:
1850 TraceSelfClosure() : _num_threads_completed(0) {}
1851
1852 jint num_threads_completed() const { return _num_threads_completed; }
1853 };
1854 TraceSelfClosure tsc;
1855
1856 if (all_threads) {
1857 Handshake::execute(&tsc);
1858 } else {
1859 oop thread_oop = JNIHandles::resolve(thread_handle);
1860 if (thread_oop != NULL) {
1861 JavaThread* target = java_lang_Thread::thread(thread_oop);
1862 Handshake::execute(&tsc, target);
1863 }
1864 }
1865 return tsc.num_threads_completed();
1866 WB_END
1867
1868 //Some convenience methods to deal with objects from java
1869 int WhiteBox::offset_for_field(const char* field_name, oop object,
1870 Symbol* signature_symbol) {
1871 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1872 Thread* THREAD = Thread::current();
1873
1874 //Get the class of our object
1875 Klass* arg_klass = object->klass();
1876 //Turn it into an instance-klass
1877 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1878
1879 //Create symbols to look for in the class
1880 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1881 THREAD);
1882
1883 //To be filled in with an offset of the field we're looking for
1884 fieldDescriptor fd;
1885
1886 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1887 if (res == NULL) {
1888 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1889 name_symbol->as_C_string());
1890 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1891 }
1892
1893 //fetch the field at the offset we've found
1894 int dest_offset = fd.offset();
1895
1896 return dest_offset;
1897 }
1898
1899
1900 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1901 int offset = offset_for_field(field_name, object,
1902 vmSymbols::string_signature());
1903 oop string = object->obj_field(offset);
1904 if (string == NULL) {
1905 return NULL;
1906 }
1907 const char* ret = java_lang_String::as_utf8_string(string);
1908 return ret;
1909 }
1910
1911 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1912 int offset =
1913 offset_for_field(field_name, object, vmSymbols::bool_signature());
1914 bool ret = (object->bool_field(offset) == JNI_TRUE);
1915 return ret;
1916 }
1917
1918 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1919 ResourceMark rm;
1920 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1921
1922 // one by one registration natives for exception catching
1923 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1924 CHECK_JNI_EXCEPTION(env);
1925 for (int i = 0, n = method_count; i < n; ++i) {
1926 // Skip dummy entries
1927 if (method_array[i].fnPtr == NULL) continue;
1928 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1929 jthrowable throwable_obj = env->ExceptionOccurred();
1930 if (throwable_obj != NULL) {
1931 env->ExceptionClear();
1932 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1933 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1934 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1935 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1936 method_array[i].name, method_array[i].signature);
1937 }
1938 } else {
1939 // Registration failed unexpectedly.
1940 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1941 method_array[i].name, method_array[i].signature);
1942 env->UnregisterNatives(wbclass);
1943 break;
1944 }
1945 }
1946 }
1947 }
1948
1949 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1950 // can't be in VM when we call JNI
1951 ThreadToNativeFromVM ttnfv(thread);
1952 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1953 CHECK_JNI_EXCEPTION_(env, 0);
1954 int ret;
1955 {
1956 ThreadInVMfromNative ttvfn(thread); // back to VM
1957 ret = DirectivesParser::parse_string(dir, tty);
1958 }
1959 env->ReleaseStringUTFChars(compDirect, dir);
1960 // -1 for error parsing directive. Return 0 as number of directives added.
1961 if (ret == -1) {
1962 ret = 0;
1963 }
1964 return (jint) ret;
1965 WB_END
1966
1967 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1968 DirectivesStack::pop(count);
1969 WB_END
1970
1971 // Checks that the library libfile has the noexecstack bit set.
1972 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1973 jboolean ret = false;
1974 #ifdef LINUX
1975 // Can't be in VM when we call JNI.
1976 ThreadToNativeFromVM ttnfv(thread);
1977 const char* lf = env->GetStringUTFChars(libfile, NULL);
1978 CHECK_JNI_EXCEPTION_(env, 0);
1979 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1980 env->ReleaseStringUTFChars(libfile, lf);
1981 #endif
1982 return ret;
1983 WB_END
1984
1985 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1986 LINUX_ONLY(return OSContainer::is_containerized();)
1987 return false;
1988 WB_END
1989
1990 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1991 os::print_os_info(tty);
1992 WB_END
1993
1994 // Elf decoder
1995 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1996 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1997 ElfFile::_do_not_cache_elf_section = true;
1998 #endif
1999 WB_END
2000
2001 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o))
2002 return (jint) ResolvedMethodTable::removed_entries_count();
2003 WB_END
2004
2005 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2006 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2007 WB_END
2008
2009 #define CC (char*)
2010
2011 static JNINativeMethod methods[] = {
2012 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2013 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2014 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2015 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2016 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2017 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2018 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2019 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2020 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2021 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2022 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2023 {CC"parseCommandLine0",
2024 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2025 (void*) &WB_ParseCommandLine
2026 },
2027 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2028 (void*)&WB_AddToBootstrapClassLoaderSearch},
2029 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2030 (void*)&WB_AddToSystemClassLoaderSearch},
2031 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2032 (void*)&WB_GetCompressedOopsMaxHeapSize},
2033 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2034 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2035 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2036 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2037 #if INCLUDE_CDS
2038 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2039 #endif
2040 #if INCLUDE_G1GC
2041 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2042 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2043 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2044 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2045 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2046 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2047 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2048 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2049 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2050 (void*)&WB_G1AuxiliaryMemoryUsage },
2051 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2052 #endif // INCLUDE_G1GC
2053 #if INCLUDE_PARALLELGC
2054 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2055 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2056 #endif
2057 #if INCLUDE_NMT
2058 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2059 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2060 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2061 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2062 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2063 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2064 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2065 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2066 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2067 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2068 #endif // INCLUDE_NMT
2069 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2070 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2071 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2072 (void*)&WB_DeoptimizeMethod },
2073 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2074 (void*)&WB_IsMethodCompiled },
2075 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2076 (void*)&WB_IsMethodCompilable},
2077 {CC"isMethodQueuedForCompilation0",
2078 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2079 {CC"isIntrinsicAvailable0",
2080 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2081 (void*)&WB_IsIntrinsicAvailable},
2082 {CC"makeMethodNotCompilable0",
2083 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2084 {CC"testSetDontInlineMethod0",
2085 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2086 {CC"getMethodCompilationLevel0",
2087 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2088 {CC"getMethodEntryBci0",
2089 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2090 {CC"getCompileQueueSize",
2091 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2092 {CC"testSetForceInlineMethod0",
2093 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2094 {CC"enqueueMethodForCompilation0",
2095 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2096 {CC"enqueueInitializerForCompilation0",
2097 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2098 {CC"clearMethodState0",
2099 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2100 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2101 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2102 {CC"matchesMethod",
2103 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2104 (void*)&WB_MatchesMethod},
2105 {CC"matchesInline",
2106 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2107 (void*)&WB_MatchesInline},
2108 {CC"shouldPrintAssembly",
2109 CC"(Ljava/lang/reflect/Executable;I)Z",
2110 (void*)&WB_ShouldPrintAssembly},
2111
2112 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2113 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2114 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2115 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2116 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2117 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2118 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2119 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2120 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2121 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2122 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2123 (void*)&WB_SetStringVMFlag},
2124 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2125 (void*)&WB_GetBooleanVMFlag},
2126 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2127 (void*)&WB_GetIntVMFlag},
2128 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2129 (void*)&WB_GetUintVMFlag},
2130 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2131 (void*)&WB_GetIntxVMFlag},
2132 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2133 (void*)&WB_GetUintxVMFlag},
2134 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2135 (void*)&WB_GetUint64VMFlag},
2136 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2137 (void*)&WB_GetSizeTVMFlag},
2138 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2139 (void*)&WB_GetDoubleVMFlag},
2140 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2141 (void*)&WB_GetStringVMFlag},
2142 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2143 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2144 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2145 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2146 {CC"allocateMetaspace",
2147 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2148 {CC"freeMetaspace",
2149 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2150 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2151 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2152 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2153 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2154 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2155 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2156 (void*)&WB_GetNMethod },
2157 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2158 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2159 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2160 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2161 {CC"getCompilationActivityMode",
2162 CC"()I", (void*)&WB_GetCompilationActivityMode},
2163 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2164 (void*)&WB_GetMethodData },
2165 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2166 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2167 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2168 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2169 (void*)&WB_DefineModule },
2170 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2171 (void*)&WB_AddModuleExports },
2172 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2173 (void*)&WB_AddReadsModule },
2174 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2175 (void*)&WB_AddModuleExportsToAllUnnamed },
2176 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2177 (void*)&WB_AddModuleExportsToAll },
2178 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2179 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2180 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2181 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2182 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2183 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2184 {CC"remapInstructionOperandFromCPCache0",
2185 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2186 {CC"encodeConstantPoolIndyIndex0",
2187 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2188 {CC"getMethodBooleanOption",
2189 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2190 (void*)&WB_GetMethodBooleaneOption},
2191 {CC"getMethodIntxOption",
2192 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2193 (void*)&WB_GetMethodIntxOption},
2194 {CC"getMethodUintxOption",
2195 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2196 (void*)&WB_GetMethodUintxOption},
2197 {CC"getMethodDoubleOption",
2198 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2199 (void*)&WB_GetMethodDoubleOption},
2200 {CC"getMethodStringOption",
2201 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2202 (void*)&WB_GetMethodStringOption},
2203 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2204 (void*)&WB_GetDefaultArchivePath},
2205 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2206 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2207 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2208 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2209 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2210 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2211 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2212 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2213 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2214
2215 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2216 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2217 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2218 (void*)&WB_AddCompilerDirective },
2219 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2220 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2221 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2222 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2223 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2224 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2225 (void*)&WB_GetConcurrentGCPhases},
2226 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2227 (void*)&WB_RequestConcurrentGCPhase},
2228 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2229 (void*)&WB_CheckLibSpecifiesNoexecstack},
2230 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2231 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2232 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2233 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount },
2234 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2235 };
2236
2237
2238 #undef CC
2239
2240 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2241 {
2242 if (WhiteBoxAPI) {
2243 // Make sure that wbclass is loaded by the null classloader
2244 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2245 Handle loader(THREAD, ik->class_loader());
2246 if (loader.is_null()) {
2247 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2248 WhiteBox::set_used();
2249 }
2250 }
2251 }
2252 JVM_END