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 size_t obj_size = p->size();
376 return Universe::heap()->cell_size(obj_size) * HeapWordSize;
377 WB_END
378
379 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
380 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
381 return (jlong)alignment;
382 WB_END
383
384 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
385 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
386 return (jlong)alignment;
387 WB_END
388
389 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
390 return Universe::heap()->supports_concurrent_phase_control();
391 WB_END
392
393 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
394 const char* const* phases = Universe::heap()->concurrent_phases();
395 jint nphases = 0;
396 for ( ; phases[nphases] != NULL; ++nphases) ;
397
398 ResourceMark rm(thread);
399 ThreadToNativeFromVM ttn(thread);
400 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
401 CHECK_JNI_EXCEPTION_(env, NULL);
402
403 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
404 CHECK_JNI_EXCEPTION_(env, NULL);
405
406 // If push fails, return with pending exception.
407 if (env->PushLocalFrame(nphases) < 0) return NULL;
408 for (jint i = 0; i < nphases; ++i) {
409 jstring phase = env->NewStringUTF(phases[i]);
410 CHECK_JNI_EXCEPTION_(env, NULL);
411 env->SetObjectArrayElement(result, i, phase);
412 CHECK_JNI_EXCEPTION_(env, NULL);
413 }
414 env->PopLocalFrame(NULL);
415
416 return result;
417 WB_END
418
419 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
420 Handle h_name(THREAD, JNIHandles::resolve(name));
421 ResourceMark rm;
422 const char* c_name = java_lang_String::as_utf8_string(h_name());
423 return Universe::heap()->request_concurrent_phase(c_name);
424 WB_END
425
426 #if INCLUDE_G1GC
427
428 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
429 if (UseG1GC) {
430 G1CollectedHeap* g1h = G1CollectedHeap::heap();
431 oop result = JNIHandles::resolve(obj);
432 const HeapRegion* hr = g1h->heap_region_containing(result);
433 return hr->is_humongous();
434 }
435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
436 WB_END
437
438 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
439 if (UseG1GC) {
440 G1CollectedHeap* g1h = G1CollectedHeap::heap();
441 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
442 return hr->is_humongous();
443 }
444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
445 WB_END
446
447 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
448 if (UseG1GC) {
449 G1CollectedHeap* g1h = G1CollectedHeap::heap();
450 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
451 return hr->is_free();
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1h = G1CollectedHeap::heap();
459 size_t nr = g1h->max_regions();
460 return (jlong)nr;
461 }
462 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
463 WB_END
464
465 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
466 if (UseG1GC) {
467 G1CollectedHeap* g1h = G1CollectedHeap::heap();
468 size_t nr = g1h->num_free_regions();
469 return (jlong)nr;
470 }
471 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
472 WB_END
473
474 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
475 if (UseG1GC) {
476 G1CollectedHeap* g1h = G1CollectedHeap::heap();
477 return g1h->concurrent_mark()->cm_thread()->during_cycle();
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
483 if (UseG1GC) {
484 G1CollectedHeap* g1h = G1CollectedHeap::heap();
485 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
486 g1h->collect(GCCause::_wb_conc_mark);
487 return true;
488 }
489 return false;
490 }
491 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
492 WB_END
493
494 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
495 if (UseG1GC) {
496 return (jint)HeapRegion::GrainBytes;
497 }
498 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
499 WB_END
500
501 #endif // INCLUDE_G1GC
502
503 #if INCLUDE_PARALLELGC
504
505 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
506 if (UseParallelGC) {
507 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
508 }
509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
510 WB_END
511
512 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
513 if (UseParallelGC) {
514 return ParallelScavengeHeap::heap()->generation_alignment();
515 }
516 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
517 WB_END
518
519 #endif // INCLUDE_PARALLELGC
520
521 #if INCLUDE_G1GC
522
523 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
524 if (UseG1GC) {
525 ResourceMark rm(THREAD);
526 G1CollectedHeap* g1h = G1CollectedHeap::heap();
527 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
528 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
529 return JNIHandles::make_local(env, h());
530 }
531 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
532 WB_END
533
534 class OldRegionsLivenessClosure: public HeapRegionClosure {
535
536 private:
537 const int _liveness;
538 size_t _total_count;
539 size_t _total_memory;
540 size_t _total_memory_to_free;
541
542 public:
543 OldRegionsLivenessClosure(int liveness) :
544 _liveness(liveness),
545 _total_count(0),
546 _total_memory(0),
547 _total_memory_to_free(0) { }
548
549 size_t total_count() { return _total_count; }
550 size_t total_memory() { return _total_memory; }
551 size_t total_memory_to_free() { return _total_memory_to_free; }
552
553 bool do_heap_region(HeapRegion* r) {
554 if (r->is_old()) {
555 size_t prev_live = r->marked_bytes();
556 size_t live = r->live_bytes();
557 size_t size = r->used();
558 size_t reg_size = HeapRegion::GrainBytes;
559 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
560 _total_memory += size;
561 ++_total_count;
562 if (size == reg_size) {
563 // we don't include non-full regions since they are unlikely included in mixed gc
564 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
565 _total_memory_to_free += size - prev_live;
566 }
567 }
568 }
569 return false;
570 }
571 };
572
573
574 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
575 if (!UseG1GC) {
576 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
577 }
578 if (liveness < 0) {
579 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
580 }
581
582 G1CollectedHeap* g1h = G1CollectedHeap::heap();
583 OldRegionsLivenessClosure rli(liveness);
584 g1h->heap_region_iterate(&rli);
585
586 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
587 result->long_at_put(0, rli.total_count());
588 result->long_at_put(1, rli.total_memory());
589 result->long_at_put(2, rli.total_memory_to_free());
590 return (jlongArray) JNIHandles::make_local(env, result);
591 WB_END
592
593 #endif // INCLUDE_G1GC
594
595 #if INCLUDE_NMT
596 // Alloc memory using the test memory type so that we can use that to see if
597 // NMT picks it up correctly
598 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
599 jlong addr = 0;
600 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
601 return addr;
602 WB_END
603
604 // Alloc memory with pseudo call stack. The test can create psudo malloc
605 // allocation site to stress the malloc tracking.
606 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
607 address pc = (address)(size_t)pseudo_stack;
608 NativeCallStack stack(&pc, 1);
609 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
610 WB_END
611
612 // Free the memory allocated by NMTAllocTest
613 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
614 os::free((void*)(uintptr_t)mem);
615 WB_END
616
617 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
618 jlong addr = 0;
619
620 addr = (jlong)(uintptr_t)os::reserve_memory(size);
621 MemTracker::record_virtual_memory_type((address)addr, mtTest);
622
623 return addr;
624 WB_END
625
626 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
627 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
628 MemTracker::record_virtual_memory_type((address)addr, mtTest);
629
630 return addr;
631 WB_END
632
633 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
634 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
635 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
636 WB_END
637
638 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
639 os::uncommit_memory((char *)(uintptr_t)addr, size);
640 WB_END
641
642 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
643 os::release_memory((char *)(uintptr_t)addr, size);
644 WB_END
645
646 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
647 // Test that we can downgrade NMT levels but not upgrade them.
648 if (MemTracker::tracking_level() == NMT_off) {
649 MemTracker::transition_to(NMT_off);
650 return MemTracker::tracking_level() == NMT_off;
651 } else {
652 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
653 MemTracker::transition_to(NMT_summary);
654 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
655
656 // Can't go to detail once NMT is set to summary.
657 MemTracker::transition_to(NMT_detail);
658 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
659
660 // Shutdown sets tracking level to minimal.
661 MemTracker::shutdown();
662 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
663
664 // Once the tracking level is minimal, we cannot increase to summary.
665 // The code ignores this request instead of asserting because if the malloc site
666 // table overflows in another thread, it tries to change the code to summary.
667 MemTracker::transition_to(NMT_summary);
668 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
669
670 // Really can never go up to detail, verify that the code would never do this.
671 MemTracker::transition_to(NMT_detail);
672 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
673 return MemTracker::tracking_level() == NMT_minimal;
674 }
675 WB_END
676
677 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
678 int hash_size = MallocSiteTable::hash_buckets();
679 assert(hash_size > 0, "NMT hash_size should be > 0");
680 return (jint)hash_size;
681 WB_END
682 #endif // INCLUDE_NMT
683
684 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
685 assert(method != NULL, "method should not be null");
686 ThreadToNativeFromVM ttn(thread);
687 return env->FromReflectedMethod(method);
688 }
689
690 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
691 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
692 private:
693 int _result;
694 const bool _make_not_entrant;
695 public:
696 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
697 _result(0), _make_not_entrant(make_not_entrant) { }
698 int result() const { return _result; }
699
700 void doit() {
701 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
702 if (t->has_last_Java_frame()) {
703 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
704 frame* f = fst.current();
705 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
706 RegisterMap* reg_map = fst.register_map();
707 Deoptimization::deoptimize(t, *f, reg_map);
708 if (_make_not_entrant) {
709 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
710 assert(cm != NULL, "sanity check");
711 cm->make_not_entrant();
712 }
713 ++_result;
714 }
715 }
716 }
717 }
718 }
719 };
720
721 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
722 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
723 VMThread::execute(&op);
724 return op.result();
725 WB_END
726
727 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
728 MutexLockerEx mu(Compile_lock);
729 CodeCache::mark_all_nmethods_for_deoptimization();
730 VM_Deoptimize op;
731 VMThread::execute(&op);
732 WB_END
733
734 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
735 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
736 int result = 0;
737 CHECK_JNI_EXCEPTION_(env, result);
738 MutexLockerEx mu(Compile_lock);
739 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
740 if (is_osr) {
741 result += mh->mark_osr_nmethods();
742 } else if (mh->code() != NULL) {
743 mh->code()->mark_for_deoptimization();
744 ++result;
745 }
746 result += CodeCache::mark_for_deoptimization(mh());
747 if (result > 0) {
748 VM_Deoptimize op;
749 VMThread::execute(&op);
750 }
751 return result;
752 WB_END
753
754 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
755 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
756 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
757 MutexLockerEx mu(Compile_lock);
758 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
759 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
760 if (code == NULL) {
761 return JNI_FALSE;
762 }
763 return (code->is_alive() && !code->is_marked_for_deoptimization());
764 WB_END
765
766 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
767 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
768 return false;
769 }
770 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
771 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
772 MutexLockerEx mu(Compile_lock);
773 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
774 if (is_osr) {
775 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
776 } else {
777 return CompilationPolicy::can_be_compiled(mh, comp_level);
778 }
779 WB_END
780
781 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
782 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
783 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
784 MutexLockerEx mu(Compile_lock);
785 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
786 return mh->queued_for_compilation();
787 WB_END
788
789 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
790 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
791 return false; // Intrinsic is not available on a non-existent compilation level.
792 }
793 jmethodID method_id, compilation_context_id;
794 method_id = reflected_method_to_jmid(thread, env, method);
795 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
796 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
797
798 DirectiveSet* directive;
799 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
800 assert(comp != NULL, "compiler not available");
801 if (compilation_context != NULL) {
802 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
803 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
804 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
805 directive = DirectivesStack::getMatchingDirective(cch, comp);
806 } else {
807 // Calling with NULL matches default directive
808 directive = DirectivesStack::getDefaultDirective(comp);
809 }
810 bool result = comp->is_intrinsic_available(mh, directive);
811 DirectivesStack::release(directive);
812 return result;
813 WB_END
814
815 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
816 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
817 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
818 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
819 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
820 return (code != NULL ? code->comp_level() : CompLevel_none);
821 WB_END
822
823 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
825 CHECK_JNI_EXCEPTION(env);
826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
827 if (is_osr) {
828 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
829 } else {
830 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
831 }
832 WB_END
833
834 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
835 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
836 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
837 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
838 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
839 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
840 WB_END
841
842 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
843 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
844 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
845 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
846 bool result = mh->dont_inline();
847 mh->set_dont_inline(value == JNI_TRUE);
848 return result;
849 WB_END
850
851 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
852 if (comp_level == CompLevel_any) {
853 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
854 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
855 } else {
856 return CompileBroker::queue_size(comp_level);
857 }
858 WB_END
859
860 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
861 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
862 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
863 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
864 bool result = mh->force_inline();
865 mh->set_force_inline(value == JNI_TRUE);
866 return result;
867 WB_END
868
869 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
870 // Screen for unavailable/bad comp level or null method
871 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
872 if (method == NULL) {
873 tty->print_cr("WB error: request to compile NULL method");
874 return false;
875 }
876 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
877 tty->print_cr("WB error: invalid compilation level %d", comp_level);
878 return false;
879 }
880 if (comp == NULL) {
881 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
882 return false;
883 }
884
885 // Check if compilation is blocking
886 methodHandle mh(THREAD, method);
887 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
888 bool is_blocking = !directive->BackgroundCompilationOption;
889 DirectivesStack::release(directive);
890
891 // Compile method and check result
892 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
893 MutexLockerEx mu(Compile_lock);
894 bool is_queued = mh->queued_for_compilation();
895 if ((!is_blocking && is_queued) || nm != NULL) {
896 return true;
897 }
898 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
899 mh->print_short_name(tty);
900 tty->cr();
901 if (is_blocking && is_queued) {
902 tty->print_cr("WB error: blocking compilation is still in queue!");
903 }
904 return false;
905 }
906
907 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
908 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
909 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
910 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
911 WB_END
912
913 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
914 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
915 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
916 WB_END
917
918 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
919 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
920 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
921
922 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
923 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
924 bool result = directive->PrintAssemblyOption;
925 DirectivesStack::release(directive);
926
927 return result;
928 WB_END
929
930 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
931 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
932 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
933
934 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
935
936 ResourceMark rm;
937 const char* error_msg = NULL;
938 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
939 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
940
941 if (m == NULL) {
942 assert(error_msg != NULL, "Always have an error message");
943 tty->print_cr("Got error: %s", error_msg);
944 return -1; // Pattern failed
945 }
946
947 // Pattern works - now check if it matches
948 int result;
949 if (m->match(mh, InlineMatcher::force_inline)) {
950 result = 2; // Force inline match
951 } else if (m->match(mh, InlineMatcher::dont_inline)) {
952 result = 1; // Dont inline match
953 } else {
954 result = 0; // No match
955 }
956 delete m;
957 return result;
958 WB_END
959
960 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
961 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
962 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
963
964 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
965
966 ResourceMark rm;
967 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
968
969 const char* error_msg = NULL;
970
971 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
972 if (m == NULL) {
973 assert(error_msg != NULL, "Must have error_msg");
974 tty->print_cr("Got error: %s", error_msg);
975 return -1;
976 }
977
978 // Pattern works - now check if it matches
979 int result = m->matches(mh);
980 delete m;
981 assert(result == 0 || result == 1, "Result out of range");
982 return result;
983 WB_END
984
985 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
986 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
987 CHECK_JNI_EXCEPTION(env);
988 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
989 MutexLockerEx mu(Compile_lock);
990 MethodData* mdo = mh->method_data();
991 MethodCounters* mcs = mh->method_counters();
992
993 if (mdo != NULL) {
994 mdo->init();
995 ResourceMark rm;
996 int arg_count = mdo->method()->size_of_parameters();
997 for (int i = 0; i < arg_count; i++) {
998 mdo->set_arg_modified(i, 0);
999 }
1000 MutexLockerEx mu(mdo->extra_data_lock());
1001 mdo->clean_method_data(/*always_clean*/true);
1002 }
1003
1004 mh->clear_not_c1_compilable();
1005 mh->clear_not_c2_compilable();
1006 mh->clear_not_c2_osr_compilable();
1007 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1008 if (mcs != NULL) {
1009 mcs->backedge_counter()->init();
1010 mcs->invocation_counter()->init();
1011 mcs->set_interpreter_invocation_count(0);
1012 mcs->set_interpreter_throwout_count(0);
1013
1014 #ifdef TIERED
1015 mcs->set_rate(0.0F);
1016 mh->set_prev_event_count(0);
1017 mh->set_prev_time(0);
1018 #endif
1019 }
1020 WB_END
1021
1022 template <typename T>
1023 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1024 if (name == NULL) {
1025 return false;
1026 }
1027 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1028 const char* flag_name = env->GetStringUTFChars(name, NULL);
1029 CHECK_JNI_EXCEPTION_(env, false);
1030 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1031 env->ReleaseStringUTFChars(name, flag_name);
1032 return (result == JVMFlag::SUCCESS);
1033 }
1034
1035 template <typename T>
1036 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1037 if (name == NULL) {
1038 return false;
1039 }
1040 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1041 const char* flag_name = env->GetStringUTFChars(name, NULL);
1042 CHECK_JNI_EXCEPTION_(env, false);
1043 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1044 env->ReleaseStringUTFChars(name, flag_name);
1045 return (result == JVMFlag::SUCCESS);
1046 }
1047
1048 template <typename T>
1049 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1050 ResourceMark rm(thread);
1051 jclass clazz = env->FindClass(name->as_C_string());
1052 CHECK_JNI_EXCEPTION_(env, NULL);
1053 jmethodID methodID = env->GetStaticMethodID(clazz,
1054 vmSymbols::valueOf_name()->as_C_string(),
1055 sig->as_C_string());
1056 CHECK_JNI_EXCEPTION_(env, NULL);
1057 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1058 CHECK_JNI_EXCEPTION_(env, NULL);
1059 return result;
1060 }
1061
1062 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1063 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1064 }
1065 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1066 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1067 }
1068 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1069 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1070 }
1071 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1072 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1073 }*/
1074 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1075 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1076 }
1077
1078 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1079 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1080 const char* flag_name = env->GetStringUTFChars(name, NULL);
1081 CHECK_JNI_EXCEPTION_(env, NULL);
1082 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1083 env->ReleaseStringUTFChars(name, flag_name);
1084 return result;
1085 }
1086
1087 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1088 JVMFlag* flag = getVMFlag(thread, env, name);
1089 return (flag != NULL) && flag->is_constant_in_binary();
1090 WB_END
1091
1092 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1093 JVMFlag* flag = getVMFlag(thread, env, name);
1094 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1095 WB_END
1096
1097 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1098 bool result;
1099 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1100 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1101 return booleanBox(thread, env, result);
1102 }
1103 return NULL;
1104 WB_END
1105
1106 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1107 int result;
1108 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1109 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1110 return longBox(thread, env, result);
1111 }
1112 return NULL;
1113 WB_END
1114
1115 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1116 uint result;
1117 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1118 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1119 return longBox(thread, env, result);
1120 }
1121 return NULL;
1122 WB_END
1123
1124 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1125 intx result;
1126 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1127 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1128 return longBox(thread, env, result);
1129 }
1130 return NULL;
1131 WB_END
1132
1133 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1134 uintx result;
1135 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1136 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1137 return longBox(thread, env, result);
1138 }
1139 return NULL;
1140 WB_END
1141
1142 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1143 uint64_t result;
1144 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1145 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1146 return longBox(thread, env, result);
1147 }
1148 return NULL;
1149 WB_END
1150
1151 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1152 size_t result;
1153 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1154 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1155 return longBox(thread, env, result);
1156 }
1157 return NULL;
1158 WB_END
1159
1160 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1161 double result;
1162 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1163 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1164 return doubleBox(thread, env, result);
1165 }
1166 return NULL;
1167 WB_END
1168
1169 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1170 ccstr ccstrResult;
1171 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1172 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1173 jstring result = env->NewStringUTF(ccstrResult);
1174 CHECK_JNI_EXCEPTION_(env, NULL);
1175 return result;
1176 }
1177 return NULL;
1178 WB_END
1179
1180 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1181 bool result = value == JNI_TRUE ? true : false;
1182 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1183 WB_END
1184
1185 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1186 int result = value;
1187 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1188 WB_END
1189
1190 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1191 uint result = value;
1192 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1193 WB_END
1194
1195 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1196 intx result = value;
1197 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1198 WB_END
1199
1200 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1201 uintx result = value;
1202 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1203 WB_END
1204
1205 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1206 uint64_t result = value;
1207 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1208 WB_END
1209
1210 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1211 size_t result = value;
1212 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1213 WB_END
1214
1215 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1216 double result = value;
1217 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1218 WB_END
1219
1220 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1221 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1222 const char* ccstrValue;
1223 if (value == NULL) {
1224 ccstrValue = NULL;
1225 }
1226 else {
1227 ccstrValue = env->GetStringUTFChars(value, NULL);
1228 CHECK_JNI_EXCEPTION(env);
1229 }
1230 ccstr ccstrResult = ccstrValue;
1231 bool needFree;
1232 {
1233 ThreadInVMfromNative ttvfn(thread); // back to VM
1234 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1235 }
1236 if (value != NULL) {
1237 env->ReleaseStringUTFChars(value, ccstrValue);
1238 }
1239 if (needFree) {
1240 FREE_C_HEAP_ARRAY(char, ccstrResult);
1241 }
1242 WB_END
1243
1244 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1245 WhiteBox::compilation_locked = true;
1246 WB_END
1247
1248 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1249 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1250 WhiteBox::compilation_locked = false;
1251 mo.notify_all();
1252 WB_END
1253
1254 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1255 // Force a code cache sweep and block until it finished
1256 NMethodSweeper::force_sweep();
1257 WB_END
1258
1259 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1260 ResourceMark rm(THREAD);
1261 int len;
1262 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1263 return (StringTable::lookup(name, len) != NULL);
1264 WB_END
1265
1266 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1267 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1268 Universe::heap()->collect(GCCause::_wb_full_gc);
1269 #if INCLUDE_G1GC
1270 if (UseG1GC) {
1271 // Needs to be cleared explicitly for G1
1272 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1273 }
1274 #endif // INCLUDE_G1GC
1275 WB_END
1276
1277 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1278 Universe::heap()->collect(GCCause::_wb_young_gc);
1279 WB_END
1280
1281 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1282 // static+volatile in order to force the read to happen
1283 // (not be eliminated by the compiler)
1284 static char c;
1285 static volatile char* p;
1286
1287 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1288 if (p == NULL) {
1289 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1290 }
1291
1292 c = *p;
1293 WB_END
1294
1295 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1296 const char* features = VM_Version::features_string();
1297 ThreadToNativeFromVM ttn(thread);
1298 jstring features_string = env->NewStringUTF(features);
1299
1300 CHECK_JNI_EXCEPTION_(env, NULL);
1301
1302 return features_string;
1303 WB_END
1304
1305 int WhiteBox::get_blob_type(const CodeBlob* code) {
1306 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1307 if (code->is_aot()) {
1308 return -1;
1309 }
1310 return CodeCache::get_code_heap(code)->code_blob_type();
1311 }
1312
1313 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1314 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1315 return CodeCache::get_code_heap(blob_type);
1316 }
1317
1318 struct CodeBlobStub {
1319 CodeBlobStub(const CodeBlob* blob) :
1320 name(os::strdup(blob->name())),
1321 size(blob->size()),
1322 blob_type(WhiteBox::get_blob_type(blob)),
1323 address((jlong) blob) { }
1324 ~CodeBlobStub() { os::free((void*) name); }
1325 const char* const name;
1326 const jint size;
1327 const jint blob_type;
1328 const jlong address;
1329 };
1330
1331 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1332 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1333 CHECK_JNI_EXCEPTION_(env, NULL);
1334 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1335
1336 jstring name = env->NewStringUTF(cb->name);
1337 CHECK_JNI_EXCEPTION_(env, NULL);
1338 env->SetObjectArrayElement(result, 0, name);
1339
1340 jobject obj = integerBox(thread, env, cb->size);
1341 CHECK_JNI_EXCEPTION_(env, NULL);
1342 env->SetObjectArrayElement(result, 1, obj);
1343
1344 obj = integerBox(thread, env, cb->blob_type);
1345 CHECK_JNI_EXCEPTION_(env, NULL);
1346 env->SetObjectArrayElement(result, 2, obj);
1347
1348 obj = longBox(thread, env, cb->address);
1349 CHECK_JNI_EXCEPTION_(env, NULL);
1350 env->SetObjectArrayElement(result, 3, obj);
1351
1352 return result;
1353 }
1354
1355 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1356 ResourceMark rm(THREAD);
1357 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1358 CHECK_JNI_EXCEPTION_(env, NULL);
1359 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1360 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1361 jobjectArray result = NULL;
1362 if (code == NULL) {
1363 return result;
1364 }
1365 int comp_level = code->comp_level();
1366 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1367
1368 ThreadToNativeFromVM ttn(thread);
1369 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1370 CHECK_JNI_EXCEPTION_(env, NULL);
1371 result = env->NewObjectArray(5, clazz, NULL);
1372 if (result == NULL) {
1373 return result;
1374 }
1375
1376 CodeBlobStub stub(code);
1377 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1378 CHECK_JNI_EXCEPTION_(env, NULL);
1379 env->SetObjectArrayElement(result, 0, codeBlob);
1380
1381 jobject level = integerBox(thread, env, comp_level);
1382 CHECK_JNI_EXCEPTION_(env, NULL);
1383 env->SetObjectArrayElement(result, 1, level);
1384
1385 jbyteArray insts = env->NewByteArray(insts_size);
1386 CHECK_JNI_EXCEPTION_(env, NULL);
1387 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1388 env->SetObjectArrayElement(result, 2, insts);
1389
1390 jobject id = integerBox(thread, env, code->compile_id());
1391 CHECK_JNI_EXCEPTION_(env, NULL);
1392 env->SetObjectArrayElement(result, 3, id);
1393
1394 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1395 CHECK_JNI_EXCEPTION_(env, NULL);
1396 env->SetObjectArrayElement(result, 4, entry_point);
1397
1398 return result;
1399 WB_END
1400
1401 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1402 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1403 BufferBlob* blob;
1404 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1405 if (full_size < size) {
1406 full_size += align_up(size - full_size, oopSize);
1407 }
1408 {
1409 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1410 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1411 if (blob != NULL) {
1412 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1413 }
1414 }
1415 // Track memory usage statistic after releasing CodeCache_lock
1416 MemoryService::track_code_cache_memory_usage();
1417 return blob;
1418 }
1419
1420 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1421 if (size < 0) {
1422 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1423 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1424 }
1425 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1426 WB_END
1427
1428 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1429 if (addr == 0) {
1430 return;
1431 }
1432 BufferBlob::free((BufferBlob*) addr);
1433 WB_END
1434
1435 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1436 ResourceMark rm;
1437 GrowableArray<CodeBlobStub*> blobs;
1438 {
1439 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1440 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1441 if (heap == NULL) {
1442 return NULL;
1443 }
1444 for (CodeBlob* cb = (CodeBlob*) heap->first();
1445 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1446 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1447 new (stub) CodeBlobStub(cb);
1448 blobs.append(stub);
1449 }
1450 }
1451 if (blobs.length() == 0) {
1452 return NULL;
1453 }
1454 ThreadToNativeFromVM ttn(thread);
1455 jobjectArray result = NULL;
1456 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1457 CHECK_JNI_EXCEPTION_(env, NULL);
1458 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1459 CHECK_JNI_EXCEPTION_(env, NULL);
1460 if (result == NULL) {
1461 return result;
1462 }
1463 int i = 0;
1464 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1465 it != blobs.end(); ++it) {
1466 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1467 CHECK_JNI_EXCEPTION_(env, NULL);
1468 env->SetObjectArrayElement(result, i, obj);
1469 CHECK_JNI_EXCEPTION_(env, NULL);
1470 ++i;
1471 }
1472 return result;
1473 WB_END
1474
1475 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1476 return CompileBroker::get_compilation_activity_mode();
1477 WB_END
1478
1479 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1480 if (addr == 0) {
1481 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1482 "WB_GetCodeBlob: addr is null");
1483 }
1484 ThreadToNativeFromVM ttn(thread);
1485 CodeBlobStub stub((CodeBlob*) addr);
1486 return codeBlob2objectArray(thread, env, &stub);
1487 WB_END
1488
1489 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1490 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1491 CHECK_JNI_EXCEPTION_(env, 0);
1492 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1493 return (jlong) mh->method_data();
1494 WB_END
1495
1496 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1497 return (jlong) Thread::current()->stack_size();
1498 WB_END
1499
1500 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1501 JavaThread* t = JavaThread::current();
1502 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1503 WB_END
1504
1505
1506 int WhiteBox::array_bytes_to_length(size_t bytes) {
1507 return Array<u1>::bytes_to_length(bytes);
1508 }
1509
1510 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1511 if (size < 0) {
1512 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1513 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1514 }
1515
1516 oop class_loader_oop = JNIHandles::resolve(class_loader);
1517 ClassLoaderData* cld = class_loader_oop != NULL
1518 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1519 : ClassLoaderData::the_null_class_loader_data();
1520
1521 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1522
1523 return (jlong)(uintptr_t)metadata;
1524 WB_END
1525
1526 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1527 oop class_loader_oop = JNIHandles::resolve(class_loader);
1528 ClassLoaderData* cld = class_loader_oop != NULL
1529 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1530 : ClassLoaderData::the_null_class_loader_data();
1531
1532 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1533 WB_END
1534
1535 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1536 jstring version, jstring location, jobjectArray packages))
1537 ResourceMark rm(THREAD);
1538
1539 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1540 objArrayHandle packages_h(THREAD, packages_oop);
1541 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1542
1543 char** pkgs = NULL;
1544 if (num_packages > 0) {
1545 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1546 for (int x = 0; x < num_packages; x++) {
1547 oop pkg_str = packages_h->obj_at(x);
1548 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1549 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1550 err_msg("Bad package name"));
1551 }
1552 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1553 }
1554 }
1555 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1556 WB_END
1557
1558 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1559 ResourceMark rm(THREAD);
1560 char* package_name = NULL;
1561 if (package != NULL) {
1562 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1563 }
1564 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1565 WB_END
1566
1567 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1568 ResourceMark rm(THREAD);
1569 char* package_name = NULL;
1570 if (package != NULL) {
1571 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1572 }
1573 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1574 WB_END
1575
1576 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1577 ResourceMark rm(THREAD);
1578 char* package_name = NULL;
1579 if (package != NULL) {
1580 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1581 }
1582 Modules::add_module_exports(module, package_name, NULL, CHECK);
1583 WB_END
1584
1585 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1586 Modules::add_reads_module(from_module, source_module, CHECK);
1587 WB_END
1588
1589 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1590 if (inc < 0) {
1591 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1592 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1593 }
1594
1595 jlong max_size_t = (jlong) ((size_t) -1);
1596 if (inc > max_size_t) {
1597 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1598 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1599 }
1600
1601 size_t new_cap_until_GC = 0;
1602 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1603 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1604 if (!success) {
1605 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1606 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1607 "due to contention with another thread");
1608 }
1609 return (jlong) new_cap_until_GC;
1610 WB_END
1611
1612 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1613 return (jlong) MetaspaceGC::capacity_until_GC();
1614 WB_END
1615
1616 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1617 return MetaspaceGC::should_concurrent_collect();
1618 WB_END
1619
1620 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1621 return (jlong)Metaspace::reserve_alignment();
1622 WB_END
1623
1624 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1625 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1626 Monitor::_safepoint_check_always :
1627 Monitor::_safepoint_check_never;
1628 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1629 attemptedNoSafepointValue == JNI_TRUE);
1630 WB_END
1631
1632 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1633 oop obj_oop = JNIHandles::resolve(obj);
1634 return (jboolean) obj_oop->mark()->has_monitor();
1635 WB_END
1636
1637 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1638 VM_ForceSafepoint force_safepoint_op;
1639 VMThread::execute(&force_safepoint_op);
1640 WB_END
1641
1642 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1643 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1644 return (jlong) ik->constants();
1645 WB_END
1646
1647 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1648 return ConstantPool::CPCACHE_INDEX_TAG;
1649 WB_END
1650
1651 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1652 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1653 ConstantPool* cp = ik->constants();
1654 if (cp->cache() == NULL) {
1655 return -1;
1656 }
1657 return cp->cache()->length();
1658 WB_END
1659
1660 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1661 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1662 ConstantPool* cp = ik->constants();
1663 if (cp->cache() == NULL) {
1664 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1665 }
1666 jint cpci = index;
1667 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1668 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1669 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1670 }
1671 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1672 return cpi;
1673 WB_END
1674
1675 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1676 return ConstantPool::encode_invokedynamic_index(index);
1677 WB_END
1678
1679 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1680 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1681 VMThread::execute(&clear_ics);
1682 WB_END
1683
1684 template <typename T>
1685 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1686 assert(value != NULL, "sanity");
1687 if (method == NULL || name == NULL) {
1688 return false;
1689 }
1690 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1691 CHECK_JNI_EXCEPTION_(env, false);
1692 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1693 // can't be in VM when we call JNI
1694 ThreadToNativeFromVM ttnfv(thread);
1695 const char* flag_name = env->GetStringUTFChars(name, NULL);
1696 CHECK_JNI_EXCEPTION_(env, false);
1697 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1698 env->ReleaseStringUTFChars(name, flag_name);
1699 return result;
1700 }
1701
1702 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1703 bool result;
1704 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1705 // can't be in VM when we call JNI
1706 ThreadToNativeFromVM ttnfv(thread);
1707 return booleanBox(thread, env, result);
1708 }
1709 return NULL;
1710 WB_END
1711
1712 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1713 intx result;
1714 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1715 // can't be in VM when we call JNI
1716 ThreadToNativeFromVM ttnfv(thread);
1717 return longBox(thread, env, result);
1718 }
1719 return NULL;
1720 WB_END
1721
1722 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1723 uintx result;
1724 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1725 // can't be in VM when we call JNI
1726 ThreadToNativeFromVM ttnfv(thread);
1727 return longBox(thread, env, result);
1728 }
1729 return NULL;
1730 WB_END
1731
1732 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1733 double result;
1734 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1735 // can't be in VM when we call JNI
1736 ThreadToNativeFromVM ttnfv(thread);
1737 return doubleBox(thread, env, result);
1738 }
1739 return NULL;
1740 WB_END
1741
1742 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1743 ccstr ccstrResult;
1744 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1745 // can't be in VM when we call JNI
1746 ThreadToNativeFromVM ttnfv(thread);
1747 jstring result = env->NewStringUTF(ccstrResult);
1748 CHECK_JNI_EXCEPTION_(env, NULL);
1749 return result;
1750 }
1751 return NULL;
1752 WB_END
1753
1754 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1755 const char* p = Arguments::get_default_shared_archive_path();
1756 ThreadToNativeFromVM ttn(thread);
1757 jstring path_string = env->NewStringUTF(p);
1758
1759 CHECK_JNI_EXCEPTION_(env, NULL);
1760
1761 return path_string;
1762 WB_END
1763
1764 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1765 return UseSharedSpaces;
1766 WB_END
1767
1768 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1769 oop obj_oop = JNIHandles::resolve(obj);
1770 return HeapShared::is_archived_object(obj_oop);
1771 WB_END
1772
1773 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1774 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1775 WB_END
1776
1777 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1778 return !StringTable::shared_string_mapped();
1779 WB_END
1780
1781 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1782 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1783 if (k->is_instance_klass()) {
1784 InstanceKlass *ik = InstanceKlass::cast(k);
1785 ConstantPool *cp = ik->constants();
1786 objArrayOop refs = cp->resolved_references();
1787 return (jobject)JNIHandles::make_local(env, refs);
1788 } else {
1789 return NULL;
1790 }
1791 WB_END
1792
1793 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1794 return HeapShared::open_archive_heap_region_mapped();
1795 WB_END
1796
1797 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1798 #if INCLUDE_CDS
1799 # ifdef _LP64
1800 if (!UseCompressedOops || !UseCompressedClassPointers) {
1801 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1802 return false;
1803 }
1804 # endif // _LP64
1805 return true;
1806 #else
1807 return false;
1808 #endif // INCLUDE_CDS
1809 WB_END
1810
1811 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1812 return HeapShared::is_heap_object_archiving_allowed();
1813 WB_END
1814
1815
1816 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1817 #if INCLUDE_JFR
1818 return true;
1819 #else
1820 return false;
1821 #endif // INCLUDE_JFR
1822 WB_END
1823
1824 #if INCLUDE_CDS
1825
1826 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1827 ResourceMark rm;
1828 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1829 int result = CDSOffsets::find_offset(c_name);
1830 return (jint)result;
1831 WB_END
1832
1833 #endif // INCLUDE_CDS
1834
1835 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1836 class TraceSelfClosure : public ThreadClosure {
1837 jint _num_threads_completed;
1838
1839 void do_thread(Thread* th) {
1840 assert(th->is_Java_thread(), "sanity");
1841 JavaThread* jt = (JavaThread*)th;
1842 ResourceMark rm;
1843
1844 jt->print_on(tty);
1845 jt->print_stack_on(tty);
1846 tty->cr();
1847 Atomic::inc(&_num_threads_completed);
1848 }
1849
1850 public:
1851 TraceSelfClosure() : _num_threads_completed(0) {}
1852
1853 jint num_threads_completed() const { return _num_threads_completed; }
1854 };
1855 TraceSelfClosure tsc;
1856
1857 if (all_threads) {
1858 Handshake::execute(&tsc);
1859 } else {
1860 oop thread_oop = JNIHandles::resolve(thread_handle);
1861 if (thread_oop != NULL) {
1862 JavaThread* target = java_lang_Thread::thread(thread_oop);
1863 Handshake::execute(&tsc, target);
1864 }
1865 }
1866 return tsc.num_threads_completed();
1867 WB_END
1868
1869 //Some convenience methods to deal with objects from java
1870 int WhiteBox::offset_for_field(const char* field_name, oop object,
1871 Symbol* signature_symbol) {
1872 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1873 Thread* THREAD = Thread::current();
1874
1875 //Get the class of our object
1876 Klass* arg_klass = object->klass();
1877 //Turn it into an instance-klass
1878 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1879
1880 //Create symbols to look for in the class
1881 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1882 THREAD);
1883
1884 //To be filled in with an offset of the field we're looking for
1885 fieldDescriptor fd;
1886
1887 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1888 if (res == NULL) {
1889 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1890 name_symbol->as_C_string());
1891 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1892 }
1893
1894 //fetch the field at the offset we've found
1895 int dest_offset = fd.offset();
1896
1897 return dest_offset;
1898 }
1899
1900
1901 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1902 int offset = offset_for_field(field_name, object,
1903 vmSymbols::string_signature());
1904 oop string = object->obj_field(offset);
1905 if (string == NULL) {
1906 return NULL;
1907 }
1908 const char* ret = java_lang_String::as_utf8_string(string);
1909 return ret;
1910 }
1911
1912 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1913 int offset =
1914 offset_for_field(field_name, object, vmSymbols::bool_signature());
1915 bool ret = (object->bool_field(offset) == JNI_TRUE);
1916 return ret;
1917 }
1918
1919 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1920 ResourceMark rm;
1921 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1922
1923 // one by one registration natives for exception catching
1924 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1925 CHECK_JNI_EXCEPTION(env);
1926 for (int i = 0, n = method_count; i < n; ++i) {
1927 // Skip dummy entries
1928 if (method_array[i].fnPtr == NULL) continue;
1929 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1930 jthrowable throwable_obj = env->ExceptionOccurred();
1931 if (throwable_obj != NULL) {
1932 env->ExceptionClear();
1933 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1934 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1935 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1936 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1937 method_array[i].name, method_array[i].signature);
1938 }
1939 } else {
1940 // Registration failed unexpectedly.
1941 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1942 method_array[i].name, method_array[i].signature);
1943 env->UnregisterNatives(wbclass);
1944 break;
1945 }
1946 }
1947 }
1948 }
1949
1950 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1951 // can't be in VM when we call JNI
1952 ThreadToNativeFromVM ttnfv(thread);
1953 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1954 CHECK_JNI_EXCEPTION_(env, 0);
1955 int ret;
1956 {
1957 ThreadInVMfromNative ttvfn(thread); // back to VM
1958 ret = DirectivesParser::parse_string(dir, tty);
1959 }
1960 env->ReleaseStringUTFChars(compDirect, dir);
1961 // -1 for error parsing directive. Return 0 as number of directives added.
1962 if (ret == -1) {
1963 ret = 0;
1964 }
1965 return (jint) ret;
1966 WB_END
1967
1968 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1969 DirectivesStack::pop(count);
1970 WB_END
1971
1972 // Checks that the library libfile has the noexecstack bit set.
1973 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1974 jboolean ret = false;
1975 #ifdef LINUX
1976 // Can't be in VM when we call JNI.
1977 ThreadToNativeFromVM ttnfv(thread);
1978 const char* lf = env->GetStringUTFChars(libfile, NULL);
1979 CHECK_JNI_EXCEPTION_(env, 0);
1980 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1981 env->ReleaseStringUTFChars(libfile, lf);
1982 #endif
1983 return ret;
1984 WB_END
1985
1986 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1987 LINUX_ONLY(return OSContainer::is_containerized();)
1988 return false;
1989 WB_END
1990
1991 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1992 os::print_os_info(tty);
1993 WB_END
1994
1995 // Elf decoder
1996 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1997 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1998 ElfFile::_do_not_cache_elf_section = true;
1999 #endif
2000 WB_END
2001
2002 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o))
2003 return (jint) ResolvedMethodTable::removed_entries_count();
2004 WB_END
2005
2006 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2007 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2008 WB_END
2009
2010 #define CC (char*)
2011
2012 static JNINativeMethod methods[] = {
2013 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2014 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2015 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2016 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2017 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2018 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2019 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2020 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2021 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2022 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2023 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2024 {CC"parseCommandLine0",
2025 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2026 (void*) &WB_ParseCommandLine
2027 },
2028 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2029 (void*)&WB_AddToBootstrapClassLoaderSearch},
2030 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2031 (void*)&WB_AddToSystemClassLoaderSearch},
2032 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2033 (void*)&WB_GetCompressedOopsMaxHeapSize},
2034 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2035 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2036 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2037 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2038 #if INCLUDE_CDS
2039 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2040 #endif
2041 #if INCLUDE_G1GC
2042 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2043 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2044 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2045 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2046 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2047 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2048 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2049 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2050 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2051 (void*)&WB_G1AuxiliaryMemoryUsage },
2052 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2053 #endif // INCLUDE_G1GC
2054 #if INCLUDE_PARALLELGC
2055 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2056 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2057 #endif
2058 #if INCLUDE_NMT
2059 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2060 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2061 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2062 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2063 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2064 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2065 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2066 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2067 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2068 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2069 #endif // INCLUDE_NMT
2070 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2071 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2072 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2073 (void*)&WB_DeoptimizeMethod },
2074 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2075 (void*)&WB_IsMethodCompiled },
2076 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2077 (void*)&WB_IsMethodCompilable},
2078 {CC"isMethodQueuedForCompilation0",
2079 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2080 {CC"isIntrinsicAvailable0",
2081 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2082 (void*)&WB_IsIntrinsicAvailable},
2083 {CC"makeMethodNotCompilable0",
2084 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2085 {CC"testSetDontInlineMethod0",
2086 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2087 {CC"getMethodCompilationLevel0",
2088 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2089 {CC"getMethodEntryBci0",
2090 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2091 {CC"getCompileQueueSize",
2092 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2093 {CC"testSetForceInlineMethod0",
2094 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2095 {CC"enqueueMethodForCompilation0",
2096 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2097 {CC"enqueueInitializerForCompilation0",
2098 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2099 {CC"clearMethodState0",
2100 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2101 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2102 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2103 {CC"matchesMethod",
2104 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2105 (void*)&WB_MatchesMethod},
2106 {CC"matchesInline",
2107 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2108 (void*)&WB_MatchesInline},
2109 {CC"shouldPrintAssembly",
2110 CC"(Ljava/lang/reflect/Executable;I)Z",
2111 (void*)&WB_ShouldPrintAssembly},
2112
2113 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2114 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2115 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2116 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2117 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2118 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2119 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2120 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2121 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2122 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2123 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2124 (void*)&WB_SetStringVMFlag},
2125 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2126 (void*)&WB_GetBooleanVMFlag},
2127 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2128 (void*)&WB_GetIntVMFlag},
2129 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2130 (void*)&WB_GetUintVMFlag},
2131 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2132 (void*)&WB_GetIntxVMFlag},
2133 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2134 (void*)&WB_GetUintxVMFlag},
2135 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2136 (void*)&WB_GetUint64VMFlag},
2137 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2138 (void*)&WB_GetSizeTVMFlag},
2139 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2140 (void*)&WB_GetDoubleVMFlag},
2141 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2142 (void*)&WB_GetStringVMFlag},
2143 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2144 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2145 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2146 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2147 {CC"allocateMetaspace",
2148 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2149 {CC"freeMetaspace",
2150 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2151 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2152 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2153 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2154 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2155 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2156 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2157 (void*)&WB_GetNMethod },
2158 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2159 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2160 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2161 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2162 {CC"getCompilationActivityMode",
2163 CC"()I", (void*)&WB_GetCompilationActivityMode},
2164 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2165 (void*)&WB_GetMethodData },
2166 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2167 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2168 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2169 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2170 (void*)&WB_DefineModule },
2171 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2172 (void*)&WB_AddModuleExports },
2173 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2174 (void*)&WB_AddReadsModule },
2175 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2176 (void*)&WB_AddModuleExportsToAllUnnamed },
2177 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2178 (void*)&WB_AddModuleExportsToAll },
2179 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2180 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2181 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2182 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2183 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2184 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2185 {CC"remapInstructionOperandFromCPCache0",
2186 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2187 {CC"encodeConstantPoolIndyIndex0",
2188 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2189 {CC"getMethodBooleanOption",
2190 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2191 (void*)&WB_GetMethodBooleaneOption},
2192 {CC"getMethodIntxOption",
2193 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2194 (void*)&WB_GetMethodIntxOption},
2195 {CC"getMethodUintxOption",
2196 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2197 (void*)&WB_GetMethodUintxOption},
2198 {CC"getMethodDoubleOption",
2199 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2200 (void*)&WB_GetMethodDoubleOption},
2201 {CC"getMethodStringOption",
2202 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2203 (void*)&WB_GetMethodStringOption},
2204 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2205 (void*)&WB_GetDefaultArchivePath},
2206 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2207 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2208 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2209 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2210 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2211 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2212 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2213 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2214 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2215
2216 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2217 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2218 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2219 (void*)&WB_AddCompilerDirective },
2220 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2221 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2222 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2223 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2224 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2225 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2226 (void*)&WB_GetConcurrentGCPhases},
2227 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2228 (void*)&WB_RequestConcurrentGCPhase},
2229 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2230 (void*)&WB_CheckLibSpecifiesNoexecstack},
2231 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2232 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2233 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2234 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount },
2235 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2236 };
2237
2238
2239 #undef CC
2240
2241 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2242 {
2243 if (WhiteBoxAPI) {
2244 // Make sure that wbclass is loaded by the null classloader
2245 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2246 Handle loader(THREAD, ik->class_loader());
2247 if (loader.is_null()) {
2248 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2249 WhiteBox::set_used();
2250 }
2251 }
2252 }
2253 JVM_END