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 Method* clinit = ik->class_initializer();
915 if (clinit == NULL) {
916 return false;
917 }
918 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
919 WB_END
920
921 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
922 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
923 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
924
925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
926 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
927 bool result = directive->PrintAssemblyOption;
928 DirectivesStack::release(directive);
929
930 return result;
931 WB_END
932
933 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
934 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
935 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
936
937 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
938
939 ResourceMark rm;
940 const char* error_msg = NULL;
941 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
942 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
943
944 if (m == NULL) {
945 assert(error_msg != NULL, "Always have an error message");
946 tty->print_cr("Got error: %s", error_msg);
947 return -1; // Pattern failed
948 }
949
950 // Pattern works - now check if it matches
951 int result;
952 if (m->match(mh, InlineMatcher::force_inline)) {
953 result = 2; // Force inline match
954 } else if (m->match(mh, InlineMatcher::dont_inline)) {
955 result = 1; // Dont inline match
956 } else {
957 result = 0; // No match
958 }
959 delete m;
960 return result;
961 WB_END
962
963 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
964 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
965 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
966
967 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
968
969 ResourceMark rm;
970 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
971
972 const char* error_msg = NULL;
973
974 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
975 if (m == NULL) {
976 assert(error_msg != NULL, "Must have error_msg");
977 tty->print_cr("Got error: %s", error_msg);
978 return -1;
979 }
980
981 // Pattern works - now check if it matches
982 int result = m->matches(mh);
983 delete m;
984 assert(result == 0 || result == 1, "Result out of range");
985 return result;
986 WB_END
987
988 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
989 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
990 CHECK_JNI_EXCEPTION(env);
991 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
992 MutexLockerEx mu(Compile_lock);
993 MethodData* mdo = mh->method_data();
994 MethodCounters* mcs = mh->method_counters();
995
996 if (mdo != NULL) {
997 mdo->init();
998 ResourceMark rm;
999 int arg_count = mdo->method()->size_of_parameters();
1000 for (int i = 0; i < arg_count; i++) {
1001 mdo->set_arg_modified(i, 0);
1002 }
1003 MutexLockerEx mu(mdo->extra_data_lock());
1004 mdo->clean_method_data(/*always_clean*/true);
1005 }
1006
1007 mh->clear_not_c1_compilable();
1008 mh->clear_not_c2_compilable();
1009 mh->clear_not_c2_osr_compilable();
1010 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1011 if (mcs != NULL) {
1012 mcs->backedge_counter()->init();
1013 mcs->invocation_counter()->init();
1014 mcs->set_interpreter_invocation_count(0);
1015 mcs->set_interpreter_throwout_count(0);
1016
1017 #ifdef TIERED
1018 mcs->set_rate(0.0F);
1019 mh->set_prev_event_count(0);
1020 mh->set_prev_time(0);
1021 #endif
1022 }
1023 WB_END
1024
1025 template <typename T>
1026 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1027 if (name == NULL) {
1028 return false;
1029 }
1030 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1031 const char* flag_name = env->GetStringUTFChars(name, NULL);
1032 CHECK_JNI_EXCEPTION_(env, false);
1033 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1034 env->ReleaseStringUTFChars(name, flag_name);
1035 return (result == JVMFlag::SUCCESS);
1036 }
1037
1038 template <typename T>
1039 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1040 if (name == NULL) {
1041 return false;
1042 }
1043 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1044 const char* flag_name = env->GetStringUTFChars(name, NULL);
1045 CHECK_JNI_EXCEPTION_(env, false);
1046 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1047 env->ReleaseStringUTFChars(name, flag_name);
1048 return (result == JVMFlag::SUCCESS);
1049 }
1050
1051 template <typename T>
1052 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1053 ResourceMark rm(thread);
1054 jclass clazz = env->FindClass(name->as_C_string());
1055 CHECK_JNI_EXCEPTION_(env, NULL);
1056 jmethodID methodID = env->GetStaticMethodID(clazz,
1057 vmSymbols::valueOf_name()->as_C_string(),
1058 sig->as_C_string());
1059 CHECK_JNI_EXCEPTION_(env, NULL);
1060 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1061 CHECK_JNI_EXCEPTION_(env, NULL);
1062 return result;
1063 }
1064
1065 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1066 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1067 }
1068 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1069 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1070 }
1071 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1072 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1073 }
1074 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1075 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1076 }*/
1077 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1078 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1079 }
1080
1081 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1082 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1083 const char* flag_name = env->GetStringUTFChars(name, NULL);
1084 CHECK_JNI_EXCEPTION_(env, NULL);
1085 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1086 env->ReleaseStringUTFChars(name, flag_name);
1087 return result;
1088 }
1089
1090 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1091 JVMFlag* flag = getVMFlag(thread, env, name);
1092 return (flag != NULL) && flag->is_constant_in_binary();
1093 WB_END
1094
1095 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1096 JVMFlag* flag = getVMFlag(thread, env, name);
1097 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1098 WB_END
1099
1100 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1101 bool result;
1102 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1103 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1104 return booleanBox(thread, env, result);
1105 }
1106 return NULL;
1107 WB_END
1108
1109 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1110 int result;
1111 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1112 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1113 return longBox(thread, env, result);
1114 }
1115 return NULL;
1116 WB_END
1117
1118 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1119 uint result;
1120 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1121 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1122 return longBox(thread, env, result);
1123 }
1124 return NULL;
1125 WB_END
1126
1127 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1128 intx result;
1129 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1130 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1131 return longBox(thread, env, result);
1132 }
1133 return NULL;
1134 WB_END
1135
1136 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1137 uintx result;
1138 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1139 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1140 return longBox(thread, env, result);
1141 }
1142 return NULL;
1143 WB_END
1144
1145 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1146 uint64_t result;
1147 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1148 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1149 return longBox(thread, env, result);
1150 }
1151 return NULL;
1152 WB_END
1153
1154 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1155 size_t result;
1156 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1157 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1158 return longBox(thread, env, result);
1159 }
1160 return NULL;
1161 WB_END
1162
1163 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1164 double result;
1165 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1166 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1167 return doubleBox(thread, env, result);
1168 }
1169 return NULL;
1170 WB_END
1171
1172 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1173 ccstr ccstrResult;
1174 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1175 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1176 jstring result = env->NewStringUTF(ccstrResult);
1177 CHECK_JNI_EXCEPTION_(env, NULL);
1178 return result;
1179 }
1180 return NULL;
1181 WB_END
1182
1183 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1184 bool result = value == JNI_TRUE ? true : false;
1185 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1186 WB_END
1187
1188 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1189 int result = value;
1190 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1191 WB_END
1192
1193 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1194 uint result = value;
1195 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1196 WB_END
1197
1198 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1199 intx result = value;
1200 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1201 WB_END
1202
1203 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1204 uintx result = value;
1205 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1206 WB_END
1207
1208 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1209 uint64_t result = value;
1210 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1211 WB_END
1212
1213 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1214 size_t result = value;
1215 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1216 WB_END
1217
1218 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1219 double result = value;
1220 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1221 WB_END
1222
1223 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1224 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1225 const char* ccstrValue;
1226 if (value == NULL) {
1227 ccstrValue = NULL;
1228 }
1229 else {
1230 ccstrValue = env->GetStringUTFChars(value, NULL);
1231 CHECK_JNI_EXCEPTION(env);
1232 }
1233 ccstr ccstrResult = ccstrValue;
1234 bool needFree;
1235 {
1236 ThreadInVMfromNative ttvfn(thread); // back to VM
1237 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1238 }
1239 if (value != NULL) {
1240 env->ReleaseStringUTFChars(value, ccstrValue);
1241 }
1242 if (needFree) {
1243 FREE_C_HEAP_ARRAY(char, ccstrResult);
1244 }
1245 WB_END
1246
1247 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1248 WhiteBox::compilation_locked = true;
1249 WB_END
1250
1251 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1252 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1253 WhiteBox::compilation_locked = false;
1254 mo.notify_all();
1255 WB_END
1256
1257 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1258 // Force a code cache sweep and block until it finished
1259 NMethodSweeper::force_sweep();
1260 WB_END
1261
1262 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1263 ResourceMark rm(THREAD);
1264 int len;
1265 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1266 return (StringTable::lookup(name, len) != NULL);
1267 WB_END
1268
1269 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1270 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1271 Universe::heap()->collect(GCCause::_wb_full_gc);
1272 #if INCLUDE_G1GC
1273 if (UseG1GC) {
1274 // Needs to be cleared explicitly for G1
1275 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1276 }
1277 #endif // INCLUDE_G1GC
1278 WB_END
1279
1280 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1281 Universe::heap()->collect(GCCause::_wb_young_gc);
1282 WB_END
1283
1284 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1285 // static+volatile in order to force the read to happen
1286 // (not be eliminated by the compiler)
1287 static char c;
1288 static volatile char* p;
1289
1290 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1291 if (p == NULL) {
1292 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1293 }
1294
1295 c = *p;
1296 WB_END
1297
1298 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1299 const char* features = VM_Version::features_string();
1300 ThreadToNativeFromVM ttn(thread);
1301 jstring features_string = env->NewStringUTF(features);
1302
1303 CHECK_JNI_EXCEPTION_(env, NULL);
1304
1305 return features_string;
1306 WB_END
1307
1308 int WhiteBox::get_blob_type(const CodeBlob* code) {
1309 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1310 if (code->is_aot()) {
1311 return -1;
1312 }
1313 return CodeCache::get_code_heap(code)->code_blob_type();
1314 }
1315
1316 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1317 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1318 return CodeCache::get_code_heap(blob_type);
1319 }
1320
1321 struct CodeBlobStub {
1322 CodeBlobStub(const CodeBlob* blob) :
1323 name(os::strdup(blob->name())),
1324 size(blob->size()),
1325 blob_type(WhiteBox::get_blob_type(blob)),
1326 address((jlong) blob) { }
1327 ~CodeBlobStub() { os::free((void*) name); }
1328 const char* const name;
1329 const jint size;
1330 const jint blob_type;
1331 const jlong address;
1332 };
1333
1334 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1335 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1336 CHECK_JNI_EXCEPTION_(env, NULL);
1337 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1338
1339 jstring name = env->NewStringUTF(cb->name);
1340 CHECK_JNI_EXCEPTION_(env, NULL);
1341 env->SetObjectArrayElement(result, 0, name);
1342
1343 jobject obj = integerBox(thread, env, cb->size);
1344 CHECK_JNI_EXCEPTION_(env, NULL);
1345 env->SetObjectArrayElement(result, 1, obj);
1346
1347 obj = integerBox(thread, env, cb->blob_type);
1348 CHECK_JNI_EXCEPTION_(env, NULL);
1349 env->SetObjectArrayElement(result, 2, obj);
1350
1351 obj = longBox(thread, env, cb->address);
1352 CHECK_JNI_EXCEPTION_(env, NULL);
1353 env->SetObjectArrayElement(result, 3, obj);
1354
1355 return result;
1356 }
1357
1358 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1359 ResourceMark rm(THREAD);
1360 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1361 CHECK_JNI_EXCEPTION_(env, NULL);
1362 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1363 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1364 jobjectArray result = NULL;
1365 if (code == NULL) {
1366 return result;
1367 }
1368 int comp_level = code->comp_level();
1369 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1370
1371 ThreadToNativeFromVM ttn(thread);
1372 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1373 CHECK_JNI_EXCEPTION_(env, NULL);
1374 result = env->NewObjectArray(5, clazz, NULL);
1375 if (result == NULL) {
1376 return result;
1377 }
1378
1379 CodeBlobStub stub(code);
1380 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1381 CHECK_JNI_EXCEPTION_(env, NULL);
1382 env->SetObjectArrayElement(result, 0, codeBlob);
1383
1384 jobject level = integerBox(thread, env, comp_level);
1385 CHECK_JNI_EXCEPTION_(env, NULL);
1386 env->SetObjectArrayElement(result, 1, level);
1387
1388 jbyteArray insts = env->NewByteArray(insts_size);
1389 CHECK_JNI_EXCEPTION_(env, NULL);
1390 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1391 env->SetObjectArrayElement(result, 2, insts);
1392
1393 jobject id = integerBox(thread, env, code->compile_id());
1394 CHECK_JNI_EXCEPTION_(env, NULL);
1395 env->SetObjectArrayElement(result, 3, id);
1396
1397 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1398 CHECK_JNI_EXCEPTION_(env, NULL);
1399 env->SetObjectArrayElement(result, 4, entry_point);
1400
1401 return result;
1402 WB_END
1403
1404 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1405 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1406 BufferBlob* blob;
1407 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1408 if (full_size < size) {
1409 full_size += align_up(size - full_size, oopSize);
1410 }
1411 {
1412 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1413 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1414 if (blob != NULL) {
1415 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1416 }
1417 }
1418 // Track memory usage statistic after releasing CodeCache_lock
1419 MemoryService::track_code_cache_memory_usage();
1420 return blob;
1421 }
1422
1423 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1424 if (size < 0) {
1425 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1426 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1427 }
1428 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1429 WB_END
1430
1431 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1432 if (addr == 0) {
1433 return;
1434 }
1435 BufferBlob::free((BufferBlob*) addr);
1436 WB_END
1437
1438 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1439 ResourceMark rm;
1440 GrowableArray<CodeBlobStub*> blobs;
1441 {
1442 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1443 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1444 if (heap == NULL) {
1445 return NULL;
1446 }
1447 for (CodeBlob* cb = (CodeBlob*) heap->first();
1448 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1449 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1450 new (stub) CodeBlobStub(cb);
1451 blobs.append(stub);
1452 }
1453 }
1454 if (blobs.length() == 0) {
1455 return NULL;
1456 }
1457 ThreadToNativeFromVM ttn(thread);
1458 jobjectArray result = NULL;
1459 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1460 CHECK_JNI_EXCEPTION_(env, NULL);
1461 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1462 CHECK_JNI_EXCEPTION_(env, NULL);
1463 if (result == NULL) {
1464 return result;
1465 }
1466 int i = 0;
1467 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1468 it != blobs.end(); ++it) {
1469 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1470 CHECK_JNI_EXCEPTION_(env, NULL);
1471 env->SetObjectArrayElement(result, i, obj);
1472 CHECK_JNI_EXCEPTION_(env, NULL);
1473 ++i;
1474 }
1475 return result;
1476 WB_END
1477
1478 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1479 return CompileBroker::get_compilation_activity_mode();
1480 WB_END
1481
1482 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1483 if (addr == 0) {
1484 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1485 "WB_GetCodeBlob: addr is null");
1486 }
1487 ThreadToNativeFromVM ttn(thread);
1488 CodeBlobStub stub((CodeBlob*) addr);
1489 return codeBlob2objectArray(thread, env, &stub);
1490 WB_END
1491
1492 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1493 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1494 CHECK_JNI_EXCEPTION_(env, 0);
1495 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1496 return (jlong) mh->method_data();
1497 WB_END
1498
1499 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1500 return (jlong) Thread::current()->stack_size();
1501 WB_END
1502
1503 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1504 JavaThread* t = JavaThread::current();
1505 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1506 WB_END
1507
1508
1509 int WhiteBox::array_bytes_to_length(size_t bytes) {
1510 return Array<u1>::bytes_to_length(bytes);
1511 }
1512
1513 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1514 if (size < 0) {
1515 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1516 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1517 }
1518
1519 oop class_loader_oop = JNIHandles::resolve(class_loader);
1520 ClassLoaderData* cld = class_loader_oop != NULL
1521 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1522 : ClassLoaderData::the_null_class_loader_data();
1523
1524 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1525
1526 return (jlong)(uintptr_t)metadata;
1527 WB_END
1528
1529 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1530 oop class_loader_oop = JNIHandles::resolve(class_loader);
1531 ClassLoaderData* cld = class_loader_oop != NULL
1532 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1533 : ClassLoaderData::the_null_class_loader_data();
1534
1535 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1536 WB_END
1537
1538 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1539 jstring version, jstring location, jobjectArray packages))
1540 ResourceMark rm(THREAD);
1541
1542 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1543 objArrayHandle packages_h(THREAD, packages_oop);
1544 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1545
1546 char** pkgs = NULL;
1547 if (num_packages > 0) {
1548 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1549 for (int x = 0; x < num_packages; x++) {
1550 oop pkg_str = packages_h->obj_at(x);
1551 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1552 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1553 err_msg("Bad package name"));
1554 }
1555 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1556 }
1557 }
1558 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1559 WB_END
1560
1561 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1562 ResourceMark rm(THREAD);
1563 char* package_name = NULL;
1564 if (package != NULL) {
1565 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1566 }
1567 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1568 WB_END
1569
1570 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1571 ResourceMark rm(THREAD);
1572 char* package_name = NULL;
1573 if (package != NULL) {
1574 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1575 }
1576 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1577 WB_END
1578
1579 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1580 ResourceMark rm(THREAD);
1581 char* package_name = NULL;
1582 if (package != NULL) {
1583 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1584 }
1585 Modules::add_module_exports(module, package_name, NULL, CHECK);
1586 WB_END
1587
1588 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1589 Modules::add_reads_module(from_module, source_module, CHECK);
1590 WB_END
1591
1592 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1593 if (inc < 0) {
1594 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1595 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1596 }
1597
1598 jlong max_size_t = (jlong) ((size_t) -1);
1599 if (inc > max_size_t) {
1600 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1601 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1602 }
1603
1604 size_t new_cap_until_GC = 0;
1605 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1606 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1607 if (!success) {
1608 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1609 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1610 "due to contention with another thread");
1611 }
1612 return (jlong) new_cap_until_GC;
1613 WB_END
1614
1615 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1616 return (jlong) MetaspaceGC::capacity_until_GC();
1617 WB_END
1618
1619 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1620 return MetaspaceGC::should_concurrent_collect();
1621 WB_END
1622
1623 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1624 return (jlong)Metaspace::reserve_alignment();
1625 WB_END
1626
1627 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1628 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1629 Monitor::_safepoint_check_always :
1630 Monitor::_safepoint_check_never;
1631 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1632 attemptedNoSafepointValue == JNI_TRUE);
1633 WB_END
1634
1635 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1636 oop obj_oop = JNIHandles::resolve(obj);
1637 return (jboolean) obj_oop->mark()->has_monitor();
1638 WB_END
1639
1640 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1641 VM_ForceSafepoint force_safepoint_op;
1642 VMThread::execute(&force_safepoint_op);
1643 WB_END
1644
1645 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1646 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1647 return (jlong) ik->constants();
1648 WB_END
1649
1650 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1651 return ConstantPool::CPCACHE_INDEX_TAG;
1652 WB_END
1653
1654 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1655 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1656 ConstantPool* cp = ik->constants();
1657 if (cp->cache() == NULL) {
1658 return -1;
1659 }
1660 return cp->cache()->length();
1661 WB_END
1662
1663 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1664 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1665 ConstantPool* cp = ik->constants();
1666 if (cp->cache() == NULL) {
1667 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1668 }
1669 jint cpci = index;
1670 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1671 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1672 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1673 }
1674 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1675 return cpi;
1676 WB_END
1677
1678 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1679 return ConstantPool::encode_invokedynamic_index(index);
1680 WB_END
1681
1682 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1683 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1684 VMThread::execute(&clear_ics);
1685 WB_END
1686
1687 template <typename T>
1688 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1689 assert(value != NULL, "sanity");
1690 if (method == NULL || name == NULL) {
1691 return false;
1692 }
1693 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1694 CHECK_JNI_EXCEPTION_(env, false);
1695 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1696 // can't be in VM when we call JNI
1697 ThreadToNativeFromVM ttnfv(thread);
1698 const char* flag_name = env->GetStringUTFChars(name, NULL);
1699 CHECK_JNI_EXCEPTION_(env, false);
1700 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1701 env->ReleaseStringUTFChars(name, flag_name);
1702 return result;
1703 }
1704
1705 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1706 bool result;
1707 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1708 // can't be in VM when we call JNI
1709 ThreadToNativeFromVM ttnfv(thread);
1710 return booleanBox(thread, env, result);
1711 }
1712 return NULL;
1713 WB_END
1714
1715 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1716 intx result;
1717 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1718 // can't be in VM when we call JNI
1719 ThreadToNativeFromVM ttnfv(thread);
1720 return longBox(thread, env, result);
1721 }
1722 return NULL;
1723 WB_END
1724
1725 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1726 uintx result;
1727 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1728 // can't be in VM when we call JNI
1729 ThreadToNativeFromVM ttnfv(thread);
1730 return longBox(thread, env, result);
1731 }
1732 return NULL;
1733 WB_END
1734
1735 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1736 double result;
1737 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1738 // can't be in VM when we call JNI
1739 ThreadToNativeFromVM ttnfv(thread);
1740 return doubleBox(thread, env, result);
1741 }
1742 return NULL;
1743 WB_END
1744
1745 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1746 ccstr ccstrResult;
1747 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1748 // can't be in VM when we call JNI
1749 ThreadToNativeFromVM ttnfv(thread);
1750 jstring result = env->NewStringUTF(ccstrResult);
1751 CHECK_JNI_EXCEPTION_(env, NULL);
1752 return result;
1753 }
1754 return NULL;
1755 WB_END
1756
1757 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1758 const char* p = Arguments::get_default_shared_archive_path();
1759 ThreadToNativeFromVM ttn(thread);
1760 jstring path_string = env->NewStringUTF(p);
1761
1762 CHECK_JNI_EXCEPTION_(env, NULL);
1763
1764 return path_string;
1765 WB_END
1766
1767 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1768 return UseSharedSpaces;
1769 WB_END
1770
1771 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1772 oop obj_oop = JNIHandles::resolve(obj);
1773 return HeapShared::is_archived_object(obj_oop);
1774 WB_END
1775
1776 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1777 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1778 WB_END
1779
1780 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1781 return !HeapShared::closed_archive_heap_region_mapped();
1782 WB_END
1783
1784 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1785 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1786 if (k->is_instance_klass()) {
1787 InstanceKlass *ik = InstanceKlass::cast(k);
1788 ConstantPool *cp = ik->constants();
1789 objArrayOop refs = cp->resolved_references();
1790 return (jobject)JNIHandles::make_local(env, refs);
1791 } else {
1792 return NULL;
1793 }
1794 WB_END
1795
1796 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1797 return HeapShared::open_archive_heap_region_mapped();
1798 WB_END
1799
1800 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1801 #if INCLUDE_CDS
1802 # ifdef _LP64
1803 if (!UseCompressedOops || !UseCompressedClassPointers) {
1804 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1805 return false;
1806 }
1807 # endif // _LP64
1808 return true;
1809 #else
1810 return false;
1811 #endif // INCLUDE_CDS
1812 WB_END
1813
1814 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1815 return HeapShared::is_heap_object_archiving_allowed();
1816 WB_END
1817
1818
1819 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1820 #if INCLUDE_JFR
1821 return true;
1822 #else
1823 return false;
1824 #endif // INCLUDE_JFR
1825 WB_END
1826
1827 #if INCLUDE_CDS
1828
1829 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1830 ResourceMark rm;
1831 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1832 int result = CDSOffsets::find_offset(c_name);
1833 return (jint)result;
1834 WB_END
1835
1836 #endif // INCLUDE_CDS
1837
1838 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1839 class TraceSelfClosure : public ThreadClosure {
1840 jint _num_threads_completed;
1841
1842 void do_thread(Thread* th) {
1843 assert(th->is_Java_thread(), "sanity");
1844 JavaThread* jt = (JavaThread*)th;
1845 ResourceMark rm;
1846
1847 jt->print_on(tty);
1848 jt->print_stack_on(tty);
1849 tty->cr();
1850 Atomic::inc(&_num_threads_completed);
1851 }
1852
1853 public:
1854 TraceSelfClosure() : _num_threads_completed(0) {}
1855
1856 jint num_threads_completed() const { return _num_threads_completed; }
1857 };
1858 TraceSelfClosure tsc;
1859
1860 if (all_threads) {
1861 Handshake::execute(&tsc);
1862 } else {
1863 oop thread_oop = JNIHandles::resolve(thread_handle);
1864 if (thread_oop != NULL) {
1865 JavaThread* target = java_lang_Thread::thread(thread_oop);
1866 Handshake::execute(&tsc, target);
1867 }
1868 }
1869 return tsc.num_threads_completed();
1870 WB_END
1871
1872 //Some convenience methods to deal with objects from java
1873 int WhiteBox::offset_for_field(const char* field_name, oop object,
1874 Symbol* signature_symbol) {
1875 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1876 Thread* THREAD = Thread::current();
1877
1878 //Get the class of our object
1879 Klass* arg_klass = object->klass();
1880 //Turn it into an instance-klass
1881 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1882
1883 //Create symbols to look for in the class
1884 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1885 THREAD);
1886
1887 //To be filled in with an offset of the field we're looking for
1888 fieldDescriptor fd;
1889
1890 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1891 if (res == NULL) {
1892 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1893 name_symbol->as_C_string());
1894 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1895 }
1896
1897 //fetch the field at the offset we've found
1898 int dest_offset = fd.offset();
1899
1900 return dest_offset;
1901 }
1902
1903
1904 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1905 int offset = offset_for_field(field_name, object,
1906 vmSymbols::string_signature());
1907 oop string = object->obj_field(offset);
1908 if (string == NULL) {
1909 return NULL;
1910 }
1911 const char* ret = java_lang_String::as_utf8_string(string);
1912 return ret;
1913 }
1914
1915 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1916 int offset =
1917 offset_for_field(field_name, object, vmSymbols::bool_signature());
1918 bool ret = (object->bool_field(offset) == JNI_TRUE);
1919 return ret;
1920 }
1921
1922 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1923 ResourceMark rm;
1924 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1925
1926 // one by one registration natives for exception catching
1927 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1928 CHECK_JNI_EXCEPTION(env);
1929 for (int i = 0, n = method_count; i < n; ++i) {
1930 // Skip dummy entries
1931 if (method_array[i].fnPtr == NULL) continue;
1932 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1933 jthrowable throwable_obj = env->ExceptionOccurred();
1934 if (throwable_obj != NULL) {
1935 env->ExceptionClear();
1936 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1937 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1938 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1939 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1940 method_array[i].name, method_array[i].signature);
1941 }
1942 } else {
1943 // Registration failed unexpectedly.
1944 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1945 method_array[i].name, method_array[i].signature);
1946 env->UnregisterNatives(wbclass);
1947 break;
1948 }
1949 }
1950 }
1951 }
1952
1953 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1954 // can't be in VM when we call JNI
1955 ThreadToNativeFromVM ttnfv(thread);
1956 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1957 CHECK_JNI_EXCEPTION_(env, 0);
1958 int ret;
1959 {
1960 ThreadInVMfromNative ttvfn(thread); // back to VM
1961 ret = DirectivesParser::parse_string(dir, tty);
1962 }
1963 env->ReleaseStringUTFChars(compDirect, dir);
1964 // -1 for error parsing directive. Return 0 as number of directives added.
1965 if (ret == -1) {
1966 ret = 0;
1967 }
1968 return (jint) ret;
1969 WB_END
1970
1971 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1972 DirectivesStack::pop(count);
1973 WB_END
1974
1975 // Checks that the library libfile has the noexecstack bit set.
1976 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1977 jboolean ret = false;
1978 #ifdef LINUX
1979 // Can't be in VM when we call JNI.
1980 ThreadToNativeFromVM ttnfv(thread);
1981 const char* lf = env->GetStringUTFChars(libfile, NULL);
1982 CHECK_JNI_EXCEPTION_(env, 0);
1983 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1984 env->ReleaseStringUTFChars(libfile, lf);
1985 #endif
1986 return ret;
1987 WB_END
1988
1989 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1990 LINUX_ONLY(return OSContainer::is_containerized();)
1991 return false;
1992 WB_END
1993
1994 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1995 os::print_os_info(tty);
1996 WB_END
1997
1998 // Elf decoder
1999 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2000 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2001 ElfFile::_do_not_cache_elf_section = true;
2002 #endif
2003 WB_END
2004
2005 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o))
2006 return (jint) ResolvedMethodTable::removed_entries_count();
2007 WB_END
2008
2009 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2010 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2011 WB_END
2012
2013 #define CC (char*)
2014
2015 static JNINativeMethod methods[] = {
2016 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2017 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2018 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2019 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2020 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2021 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2022 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2023 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2024 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2025 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2026 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2027 {CC"parseCommandLine0",
2028 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2029 (void*) &WB_ParseCommandLine
2030 },
2031 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2032 (void*)&WB_AddToBootstrapClassLoaderSearch},
2033 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2034 (void*)&WB_AddToSystemClassLoaderSearch},
2035 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2036 (void*)&WB_GetCompressedOopsMaxHeapSize},
2037 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2038 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2039 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2040 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2041 #if INCLUDE_CDS
2042 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2043 #endif
2044 #if INCLUDE_G1GC
2045 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2046 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2047 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2048 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2049 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2050 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2051 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2052 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2053 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2054 (void*)&WB_G1AuxiliaryMemoryUsage },
2055 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2056 #endif // INCLUDE_G1GC
2057 #if INCLUDE_PARALLELGC
2058 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2059 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2060 #endif
2061 #if INCLUDE_NMT
2062 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2063 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2064 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2065 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2066 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2067 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2068 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2069 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2070 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2071 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2072 #endif // INCLUDE_NMT
2073 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2074 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2075 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2076 (void*)&WB_DeoptimizeMethod },
2077 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2078 (void*)&WB_IsMethodCompiled },
2079 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2080 (void*)&WB_IsMethodCompilable},
2081 {CC"isMethodQueuedForCompilation0",
2082 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2083 {CC"isIntrinsicAvailable0",
2084 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2085 (void*)&WB_IsIntrinsicAvailable},
2086 {CC"makeMethodNotCompilable0",
2087 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2088 {CC"testSetDontInlineMethod0",
2089 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2090 {CC"getMethodCompilationLevel0",
2091 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2092 {CC"getMethodEntryBci0",
2093 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2094 {CC"getCompileQueueSize",
2095 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2096 {CC"testSetForceInlineMethod0",
2097 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2098 {CC"enqueueMethodForCompilation0",
2099 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2100 {CC"enqueueInitializerForCompilation0",
2101 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2102 {CC"clearMethodState0",
2103 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2104 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2105 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2106 {CC"matchesMethod",
2107 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2108 (void*)&WB_MatchesMethod},
2109 {CC"matchesInline",
2110 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2111 (void*)&WB_MatchesInline},
2112 {CC"shouldPrintAssembly",
2113 CC"(Ljava/lang/reflect/Executable;I)Z",
2114 (void*)&WB_ShouldPrintAssembly},
2115
2116 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2117 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2118 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2119 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2120 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2121 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2122 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2123 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2124 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2125 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2126 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2127 (void*)&WB_SetStringVMFlag},
2128 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2129 (void*)&WB_GetBooleanVMFlag},
2130 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2131 (void*)&WB_GetIntVMFlag},
2132 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2133 (void*)&WB_GetUintVMFlag},
2134 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2135 (void*)&WB_GetIntxVMFlag},
2136 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2137 (void*)&WB_GetUintxVMFlag},
2138 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2139 (void*)&WB_GetUint64VMFlag},
2140 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2141 (void*)&WB_GetSizeTVMFlag},
2142 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2143 (void*)&WB_GetDoubleVMFlag},
2144 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2145 (void*)&WB_GetStringVMFlag},
2146 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2147 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2148 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2149 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2150 {CC"allocateMetaspace",
2151 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2152 {CC"freeMetaspace",
2153 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2154 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2155 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2156 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2157 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2158 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2159 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2160 (void*)&WB_GetNMethod },
2161 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2162 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2163 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2164 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2165 {CC"getCompilationActivityMode",
2166 CC"()I", (void*)&WB_GetCompilationActivityMode},
2167 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2168 (void*)&WB_GetMethodData },
2169 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2170 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2171 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2172 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2173 (void*)&WB_DefineModule },
2174 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2175 (void*)&WB_AddModuleExports },
2176 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2177 (void*)&WB_AddReadsModule },
2178 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2179 (void*)&WB_AddModuleExportsToAllUnnamed },
2180 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2181 (void*)&WB_AddModuleExportsToAll },
2182 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2183 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2184 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2185 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2186 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2187 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2188 {CC"remapInstructionOperandFromCPCache0",
2189 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2190 {CC"encodeConstantPoolIndyIndex0",
2191 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2192 {CC"getMethodBooleanOption",
2193 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2194 (void*)&WB_GetMethodBooleaneOption},
2195 {CC"getMethodIntxOption",
2196 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2197 (void*)&WB_GetMethodIntxOption},
2198 {CC"getMethodUintxOption",
2199 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2200 (void*)&WB_GetMethodUintxOption},
2201 {CC"getMethodDoubleOption",
2202 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2203 (void*)&WB_GetMethodDoubleOption},
2204 {CC"getMethodStringOption",
2205 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2206 (void*)&WB_GetMethodStringOption},
2207 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2208 (void*)&WB_GetDefaultArchivePath},
2209 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2210 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2211 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2212 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2213 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2214 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2215 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2216 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2217 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2218
2219 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2220 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2221 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2222 (void*)&WB_AddCompilerDirective },
2223 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2224 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2225 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2226 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2227 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2228 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2229 (void*)&WB_GetConcurrentGCPhases},
2230 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2231 (void*)&WB_RequestConcurrentGCPhase},
2232 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2233 (void*)&WB_CheckLibSpecifiesNoexecstack},
2234 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2235 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2236 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2237 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount },
2238 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2239 };
2240
2241
2242 #undef CC
2243
2244 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2245 {
2246 if (WhiteBoxAPI) {
2247 // Make sure that wbclass is loaded by the null classloader
2248 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2249 Handle loader(THREAD, ik->class_loader());
2250 if (loader.is_null()) {
2251 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2252 WhiteBox::set_used();
2253 }
2254 }
2255 }
2256 JVM_END