1 /*
2 * Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/classLoaderData.hpp"
30 #include "classfile/modules.hpp"
31 #include "classfile/stringTable.hpp"
32 #include "code/codeCache.hpp"
33 #include "compiler/methodMatcher.hpp"
34 #include "compiler/directivesParser.hpp"
35 #include "jvmtifiles/jvmtiEnv.hpp"
36 #include "memory/metadataFactory.hpp"
37 #include "memory/metaspaceShared.hpp"
38 #include "memory/iterator.hpp"
39 #include "memory/resourceArea.hpp"
40 #include "memory/universe.hpp"
41 #include "memory/oopFactory.hpp"
42 #include "oops/constantPool.hpp"
43 #include "oops/oop.inline.hpp"
44 #include "prims/wbtestmethods/parserTests.hpp"
45 #include "prims/whitebox.hpp"
46 #include "runtime/arguments.hpp"
47 #include "runtime/compilationPolicy.hpp"
48 #include "runtime/deoptimization.hpp"
49 #include "runtime/interfaceSupport.hpp"
50 #include "runtime/javaCalls.hpp"
51 #include "runtime/os.hpp"
52 #include "runtime/sweeper.hpp"
53 #include "runtime/thread.hpp"
54 #include "runtime/vm_version.hpp"
55 #include "utilities/array.hpp"
56 #include "utilities/debug.hpp"
57 #include "utilities/exceptions.hpp"
58 #include "utilities/macros.hpp"
59 #if INCLUDE_ALL_GCS
60 #include "gc/g1/concurrentMarkThread.hpp"
61 #include "gc/g1/g1CollectedHeap.inline.hpp"
62 #include "gc/g1/g1ConcurrentMark.hpp"
63 #include "gc/g1/heapRegionRemSet.hpp"
64 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
65 #include "gc/parallel/adjoiningGenerations.hpp"
66 #endif // INCLUDE_ALL_GCS
67 #if INCLUDE_NMT
68 #include "services/mallocSiteTable.hpp"
69 #include "services/memTracker.hpp"
70 #include "utilities/nativeCallStack.hpp"
71 #endif // INCLUDE_NMT
72
73
74 #define SIZE_T_MAX_VALUE ((size_t) -1)
75
76 bool WhiteBox::_used = false;
77 volatile bool WhiteBox::compilation_locked = false;
78
79 class VM_WhiteBoxOperation : public VM_Operation {
80 public:
81 VM_WhiteBoxOperation() { }
82 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
83 bool allow_nested_vm_operations() const { return true; }
84 };
85
86
87 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
88 return (jlong)(void*)JNIHandles::resolve(obj);
89 WB_END
90
91 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
92 return heapOopSize;
93 WB_END
94
95 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
96 return os::vm_page_size();
97 WB_END
98
99 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
100 return os::vm_allocation_granularity();
101 WB_END
102
103 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
104 return os::large_page_size();
105 WB_END
106
107 class WBIsKlassAliveClosure : public KlassClosure {
108 Symbol* _name;
109 bool _found;
110 public:
111 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
112
113 void do_klass(Klass* k) {
114 if (_found) return;
115 Symbol* ksym = k->name();
116 if (ksym->fast_compare(_name) == 0) {
117 _found = true;
118 }
119 }
120
121 bool found() const {
122 return _found;
123 }
124 };
125
126 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
127 oop h_name = JNIHandles::resolve(name);
128 if (h_name == NULL) return false;
129 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
130 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
131
132 WBIsKlassAliveClosure closure(sym);
133 ClassLoaderDataGraph::classes_do(&closure);
134
135 return closure.found();
136 WB_END
137
138 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
139 #if INCLUDE_JVMTI
140 ResourceMark rm;
141 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
142 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
143 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
144 assert(err == JVMTI_ERROR_NONE, "must not fail");
145 #endif
146 }
147 WB_END
148
149 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
150 #if INCLUDE_JVMTI
151 ResourceMark rm;
152 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
153 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
154 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
155 assert(err == JVMTI_ERROR_NONE, "must not fail");
156 #endif
157 }
158 WB_END
159
160
161 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
162 return (jlong)Arguments::max_heap_for_compressed_oops();
163 }
164 WB_END
165
166 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
167 CollectorPolicy * p = Universe::heap()->collector_policy();
168 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
169 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
170 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
171 p->space_alignment(), p->heap_alignment());
172 }
173 WB_END
174
175 #ifndef PRODUCT
176 // Forward declaration
177 void TestReservedSpace_test();
178 void TestReserveMemorySpecial_test();
179 void TestVirtualSpace_test();
180 void TestMetaspaceAux_test();
181 #endif
182
183 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
184 #ifndef PRODUCT
185 TestReservedSpace_test();
186 TestReserveMemorySpecial_test();
187 TestVirtualSpace_test();
188 TestMetaspaceAux_test();
189 #endif
190 WB_END
191
192 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
193 size_t granularity = os::vm_allocation_granularity();
194 ReservedHeapSpace rhs(100 * granularity, granularity, false);
195 VirtualSpace vs;
196 vs.initialize(rhs, 50 * granularity);
197
198 // Check if constraints are complied
199 if (!( UseCompressedOops && rhs.base() != NULL &&
200 Universe::narrow_oop_base() != NULL &&
201 Universe::narrow_oop_use_implicit_null_checks() )) {
202 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
203 "\tUseCompressedOops is %d\n"
204 "\trhs.base() is " PTR_FORMAT "\n"
205 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
206 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
207 UseCompressedOops,
208 p2i(rhs.base()),
209 p2i(Universe::narrow_oop_base()),
210 Universe::narrow_oop_use_implicit_null_checks());
211 return;
212 }
213 tty->print_cr("Reading from no access area... ");
214 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
215 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
216 WB_END
217
218 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
219 size_t magnitude, size_t iterations) {
220 size_t granularity = os::vm_allocation_granularity();
221 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
222 VirtualSpace vs;
223 if (!vs.initialize(rhs, 0)) {
224 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
225 return 3;
226 }
227
228 long seed = os::random();
229 tty->print_cr("Random seed is %ld", seed);
230 os::init_random(seed);
231
232 for (size_t i = 0; i < iterations; i++) {
233
234 // Whether we will shrink or grow
235 bool shrink = os::random() % 2L == 0;
236
237 // Get random delta to resize virtual space
238 size_t delta = (size_t)os::random() % magnitude;
239
240 // If we are about to shrink virtual space below zero, then expand instead
241 if (shrink && vs.committed_size() < delta) {
242 shrink = false;
243 }
244
245 // Resizing by delta
246 if (shrink) {
247 vs.shrink_by(delta);
248 } else {
249 // If expanding fails expand_by will silently return false
250 vs.expand_by(delta, true);
251 }
252 }
253 return 0;
254 }
255
256 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
257 jlong reserved_space_size, jlong magnitude, jlong iterations))
258 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
259 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
260 iterations);
261 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
262 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
263 return 1;
264 }
265
266 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
267 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
268 if (sizeof(size_t) < sizeof(jlong)) {
269 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
270 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
271 || iterations > size_t_max_value) {
272 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
273 return 2;
274 }
275 }
276
277 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
278 (size_t) magnitude, (size_t) iterations);
279 WB_END
280
281 static const jint serial_code = 1;
282 static const jint parallel_code = 2;
283 static const jint cms_code = 4;
284 static const jint g1_code = 8;
285
286 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
287 if (UseSerialGC) {
288 return serial_code;
289 } else if (UseParallelGC || UseParallelOldGC) {
290 return parallel_code;
291 } if (UseConcMarkSweepGC) {
292 return cms_code;
293 } else if (UseG1GC) {
294 return g1_code;
295 }
296 ShouldNotReachHere();
297 return 0;
298 WB_END
299
300 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
301 #if INCLUDE_ALL_GCS
302 return serial_code | parallel_code | cms_code | g1_code;
303 #else
304 return serial_code;
305 #endif // INCLUDE_ALL_GCS
306 WB_END
307
308 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
309 if (UseSerialGC) {
310 return FLAG_IS_ERGO(UseSerialGC);
311 } else if (UseParallelGC) {
312 return FLAG_IS_ERGO(UseParallelGC);
313 } else if (UseParallelOldGC) {
314 return FLAG_IS_ERGO(UseParallelOldGC);
315 } else if (UseConcMarkSweepGC) {
316 return FLAG_IS_ERGO(UseConcMarkSweepGC);
317 } else if (UseG1GC) {
318 return FLAG_IS_ERGO(UseG1GC);
319 }
320 ShouldNotReachHere();
321 return false;
322 WB_END
323
324 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
325 oop p = JNIHandles::resolve(obj);
326 #if INCLUDE_ALL_GCS
327 if (UseG1GC) {
328 G1CollectedHeap* g1 = G1CollectedHeap::heap();
329 const HeapRegion* hr = g1->heap_region_containing(p);
330 if (hr == NULL) {
331 return false;
332 }
333 return !(hr->is_young());
334 } else if (UseParallelGC) {
335 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
336 return !psh->is_in_young(p);
337 }
338 #endif // INCLUDE_ALL_GCS
339 GenCollectedHeap* gch = GenCollectedHeap::heap();
340 return !gch->is_in_young(p);
341 WB_END
342
343 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
344 oop p = JNIHandles::resolve(obj);
345 return p->size() * HeapWordSize;
346 WB_END
347
348 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
349 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
350 return (jlong)alignment;
351 WB_END
352
353 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
354 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
355 return (jlong)alignment;
356 WB_END
357
358 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
359 return Universe::heap()->supports_concurrent_phase_control();
360 WB_END
361
362 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
363 const char* const* phases = Universe::heap()->concurrent_phases();
364 jint nphases = 0;
365 for ( ; phases[nphases] != NULL; ++nphases) ;
366
367 ResourceMark rm(thread);
368 ThreadToNativeFromVM ttn(thread);
369 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
370 CHECK_JNI_EXCEPTION_(env, NULL);
371
372 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
373 CHECK_JNI_EXCEPTION_(env, NULL);
374
375 // If push fails, return with pending exception.
376 if (env->PushLocalFrame(nphases) < 0) return NULL;
377 for (jint i = 0; i < nphases; ++i) {
378 jstring phase = env->NewStringUTF(phases[i]);
379 CHECK_JNI_EXCEPTION_(env, NULL);
380 env->SetObjectArrayElement(result, i, phase);
381 CHECK_JNI_EXCEPTION_(env, NULL);
382 }
383 env->PopLocalFrame(NULL);
384
385 return result;
386 WB_END
387
388 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
389 Handle h_name(THREAD, JNIHandles::resolve(name));
390 ResourceMark rm;
391 const char* c_name = java_lang_String::as_utf8_string(h_name());
392 return Universe::heap()->request_concurrent_phase(c_name);
393 WB_END
394
395 #if INCLUDE_ALL_GCS
396 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
397 G1CollectedHeap* g1 = G1CollectedHeap::heap();
398 oop result = JNIHandles::resolve(obj);
399 const HeapRegion* hr = g1->heap_region_containing(result);
400 return hr->is_humongous();
401 WB_END
402
403 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
404 G1CollectedHeap* g1 = G1CollectedHeap::heap();
405 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
406 return hr->is_humongous();
407 WB_END
408
409 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
410 G1CollectedHeap* g1 = G1CollectedHeap::heap();
411 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
412 return hr->is_free();
413 WB_END
414
415 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
416 G1CollectedHeap* g1 = G1CollectedHeap::heap();
417 size_t nr = g1->max_regions();
418 return (jlong)nr;
419 WB_END
420
421 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
422 G1CollectedHeap* g1 = G1CollectedHeap::heap();
423 size_t nr = g1->num_free_regions();
424 return (jlong)nr;
425 WB_END
426
427 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
428 G1CollectedHeap* g1h = G1CollectedHeap::heap();
429 return g1h->concurrent_mark()->cmThread()->during_cycle();
430 WB_END
431
432 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
433 G1CollectedHeap* g1h = G1CollectedHeap::heap();
434 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
435 g1h->collect(GCCause::_wb_conc_mark);
436 return true;
437 }
438 return false;
439 WB_END
440
441 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
442 return (jint)HeapRegion::GrainBytes;
443 WB_END
444
445 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
446 #if INCLUDE_ALL_GCS
447 if (UseParallelGC) {
448 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
449 }
450 #endif // INCLUDE_ALL_GCS
451 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
452 WB_END
453
454 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
455 #if INCLUDE_ALL_GCS
456 if (UseParallelGC) {
457 return ParallelScavengeHeap::heap()->generation_alignment();
458 }
459 #endif // INCLUDE_ALL_GCS
460 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
461 WB_END
462
463 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
464 ResourceMark rm(THREAD);
465 G1CollectedHeap* g1h = G1CollectedHeap::heap();
466 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
467 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
468 return JNIHandles::make_local(env, h());
469 WB_END
470
471 class OldRegionsLivenessClosure: public HeapRegionClosure {
472
473 private:
474 const int _liveness;
475 size_t _total_count;
476 size_t _total_memory;
477 size_t _total_memory_to_free;
478
479 public:
480 OldRegionsLivenessClosure(int liveness) :
481 _liveness(liveness),
482 _total_count(0),
483 _total_memory(0),
484 _total_memory_to_free(0) { }
485
486 size_t total_count() { return _total_count; }
487 size_t total_memory() { return _total_memory; }
488 size_t total_memory_to_free() { return _total_memory_to_free; }
489
490 bool doHeapRegion(HeapRegion* r) {
491 if (r->is_old()) {
492 size_t prev_live = r->marked_bytes();
493 size_t live = r->live_bytes();
494 size_t size = r->used();
495 size_t reg_size = HeapRegion::GrainBytes;
496 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
497 _total_memory += size;
498 ++_total_count;
499 if (size == reg_size) {
500 // we don't include non-full regions since they are unlikely included in mixed gc
501 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
502 _total_memory_to_free += size - prev_live;
503 }
504 }
505 }
506 return false;
507 }
508 };
509
510
511 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
512 if (!UseG1GC) {
513 THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "WB_G1GetMixedGCInfo: G1 is not enabled");
514 }
515 if (liveness < 0) {
516 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
517 }
518
519 G1CollectedHeap* g1h = G1CollectedHeap::heap();
520 OldRegionsLivenessClosure rli(liveness);
521 g1h->heap_region_iterate(&rli);
522
523 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
524 result->long_at_put(0, rli.total_count());
525 result->long_at_put(1, rli.total_memory());
526 result->long_at_put(2, rli.total_memory_to_free());
527 return (jlongArray) JNIHandles::make_local(env, result);
528 WB_END
529
530
531
532 #endif // INCLUDE_ALL_GCS
533
534 #if INCLUDE_NMT
535 // Alloc memory using the test memory type so that we can use that to see if
536 // NMT picks it up correctly
537 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
538 jlong addr = 0;
539 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
540 return addr;
541 WB_END
542
543 // Alloc memory with pseudo call stack. The test can create psudo malloc
544 // allocation site to stress the malloc tracking.
545 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
546 address pc = (address)(size_t)pseudo_stack;
547 NativeCallStack stack(&pc, 1);
548 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
549 WB_END
550
551 // Free the memory allocated by NMTAllocTest
552 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
553 os::free((void*)(uintptr_t)mem);
554 WB_END
555
556 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
557 jlong addr = 0;
558
559 addr = (jlong)(uintptr_t)os::reserve_memory(size);
560 MemTracker::record_virtual_memory_type((address)addr, mtTest);
561
562 return addr;
563 WB_END
564
565 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
566 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
567 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
568 WB_END
569
570 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
571 os::uncommit_memory((char *)(uintptr_t)addr, size);
572 WB_END
573
574 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
575 os::release_memory((char *)(uintptr_t)addr, size);
576 WB_END
577
578 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
579 // Test that we can downgrade NMT levels but not upgrade them.
580 if (MemTracker::tracking_level() == NMT_off) {
581 MemTracker::transition_to(NMT_off);
582 return MemTracker::tracking_level() == NMT_off;
583 } else {
584 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
585 MemTracker::transition_to(NMT_summary);
586 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
587
588 // Can't go to detail once NMT is set to summary.
589 MemTracker::transition_to(NMT_detail);
590 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
591
592 // Shutdown sets tracking level to minimal.
593 MemTracker::shutdown();
594 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
595
596 // Once the tracking level is minimal, we cannot increase to summary.
597 // The code ignores this request instead of asserting because if the malloc site
598 // table overflows in another thread, it tries to change the code to summary.
599 MemTracker::transition_to(NMT_summary);
600 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
601
602 // Really can never go up to detail, verify that the code would never do this.
603 MemTracker::transition_to(NMT_detail);
604 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
605 return MemTracker::tracking_level() == NMT_minimal;
606 }
607 WB_END
608
609 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
610 int hash_size = MallocSiteTable::hash_buckets();
611 assert(hash_size > 0, "NMT hash_size should be > 0");
612 return (jint)hash_size;
613 WB_END
614 #endif // INCLUDE_NMT
615
616 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
617 assert(method != NULL, "method should not be null");
618 ThreadToNativeFromVM ttn(thread);
619 return env->FromReflectedMethod(method);
620 }
621
622 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
623 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
624 private:
625 int _result;
626 const bool _make_not_entrant;
627 public:
628 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
629 _result(0), _make_not_entrant(make_not_entrant) { }
630 int result() const { return _result; }
631
632 void doit() {
633 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
634 if (t->has_last_Java_frame()) {
635 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
636 frame* f = fst.current();
637 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
638 RegisterMap* reg_map = fst.register_map();
639 Deoptimization::deoptimize(t, *f, reg_map);
640 if (_make_not_entrant) {
641 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
642 assert(cm != NULL, "sanity check");
643 cm->make_not_entrant();
644 }
645 ++_result;
646 }
647 }
648 }
649 }
650 }
651 };
652
653 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
654 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
655 VMThread::execute(&op);
656 return op.result();
657 WB_END
658
659 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
660 MutexLockerEx mu(Compile_lock);
661 CodeCache::mark_all_nmethods_for_deoptimization();
662 VM_Deoptimize op;
663 VMThread::execute(&op);
664 WB_END
665
666 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
667 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
668 int result = 0;
669 CHECK_JNI_EXCEPTION_(env, result);
670 MutexLockerEx mu(Compile_lock);
671 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
672 if (is_osr) {
673 result += mh->mark_osr_nmethods();
674 } else if (mh->code() != NULL) {
675 mh->code()->mark_for_deoptimization();
676 ++result;
677 }
678 result += CodeCache::mark_for_deoptimization(mh());
679 if (result > 0) {
680 VM_Deoptimize op;
681 VMThread::execute(&op);
682 }
683 return result;
684 WB_END
685
686 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
687 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
688 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
689 MutexLockerEx mu(Compile_lock);
690 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
691 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
692 if (code == NULL) {
693 return JNI_FALSE;
694 }
695 return (code->is_alive() && !code->is_marked_for_deoptimization());
696 WB_END
697
698 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
699 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
700 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
701 MutexLockerEx mu(Compile_lock);
702 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
703 if (is_osr) {
704 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
705 } else {
706 return CompilationPolicy::can_be_compiled(mh, comp_level);
707 }
708 WB_END
709
710 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
711 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
712 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
713 MutexLockerEx mu(Compile_lock);
714 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
715 return mh->queued_for_compilation();
716 WB_END
717
718 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
719 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
720 return false; // Intrinsic is not available on a non-existent compilation level.
721 }
722 jmethodID method_id, compilation_context_id;
723 method_id = reflected_method_to_jmid(thread, env, method);
724 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
725 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
726
727 DirectiveSet* directive;
728 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
729 assert(comp != NULL, "compiler not available");
730 if (compilation_context != NULL) {
731 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
732 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
733 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
734 directive = DirectivesStack::getMatchingDirective(cch, comp);
735 } else {
736 // Calling with NULL matches default directive
737 directive = DirectivesStack::getDefaultDirective(comp);
738 }
739 bool result = comp->is_intrinsic_available(mh, directive);
740 DirectivesStack::release(directive);
741 return result;
742 WB_END
743
744 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
745 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
746 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
747 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
748 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
749 return (code != NULL ? code->comp_level() : CompLevel_none);
750 WB_END
751
752 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
753 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
754 CHECK_JNI_EXCEPTION(env);
755 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
756 if (is_osr) {
757 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
758 } else {
759 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
760 }
761 WB_END
762
763 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
764 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
765 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
766 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
767 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
768 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
769 WB_END
770
771 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
772 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
773 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
774 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
775 bool result = mh->dont_inline();
776 mh->set_dont_inline(value == JNI_TRUE);
777 return result;
778 WB_END
779
780 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
781 if (comp_level == CompLevel_any) {
782 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
783 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
784 } else {
785 return CompileBroker::queue_size(comp_level);
786 }
787 WB_END
788
789 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
790 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
791 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
792 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
793 bool result = mh->force_inline();
794 mh->set_force_inline(value == JNI_TRUE);
795 return result;
796 WB_END
797
798 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
799 // Screen for unavailable/bad comp level or null method
800 if (method == NULL || comp_level > TieredStopAtLevel ||
801 CompileBroker::compiler(comp_level) == NULL) {
802 return false;
803 }
804 methodHandle mh(THREAD, method);
805 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
806 MutexLockerEx mu(Compile_lock);
807 return (mh->queued_for_compilation() || nm != NULL);
808 }
809
810 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
811 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
812 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
813 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
814 WB_END
815
816 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
817 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
818 return WhiteBox::compile_method(ikh->class_initializer(), comp_level, InvocationEntryBci, THREAD);
819 WB_END
820
821 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
822 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
823 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
824
825 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
826 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
827 bool result = directive->PrintAssemblyOption;
828 DirectivesStack::release(directive);
829
830 return result;
831 WB_END
832
833 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
834 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
835 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
836
837 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
838
839 ResourceMark rm;
840 const char* error_msg = NULL;
841 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
842 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
843
844 if (m == NULL) {
845 assert(error_msg != NULL, "Always have an error message");
846 tty->print_cr("Got error: %s", error_msg);
847 return -1; // Pattern failed
848 }
849
850 // Pattern works - now check if it matches
851 int result;
852 if (m->match(mh, InlineMatcher::force_inline)) {
853 result = 2; // Force inline match
854 } else if (m->match(mh, InlineMatcher::dont_inline)) {
855 result = 1; // Dont inline match
856 } else {
857 result = 0; // No match
858 }
859 delete m;
860 return result;
861 WB_END
862
863 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
864 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
865 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
866
867 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
868
869 ResourceMark rm;
870 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
871
872 const char* error_msg = NULL;
873
874 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
875 if (m == NULL) {
876 assert(error_msg != NULL, "Must have error_msg");
877 tty->print_cr("Got error: %s", error_msg);
878 return -1;
879 }
880
881 // Pattern works - now check if it matches
882 int result = m->matches(mh);
883 delete m;
884 assert(result == 0 || result == 1, "Result out of range");
885 return result;
886 WB_END
887
888 static AlwaysFalseClosure always_false;
889
890 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
891 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
892 CHECK_JNI_EXCEPTION(env);
893 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
894 MutexLockerEx mu(Compile_lock);
895 MethodData* mdo = mh->method_data();
896 MethodCounters* mcs = mh->method_counters();
897
898 if (mdo != NULL) {
899 mdo->init();
900 ResourceMark rm;
901 int arg_count = mdo->method()->size_of_parameters();
902 for (int i = 0; i < arg_count; i++) {
903 mdo->set_arg_modified(i, 0);
904 }
905 MutexLockerEx mu(mdo->extra_data_lock());
906 mdo->clean_method_data(&always_false);
907 }
908
909 mh->clear_not_c1_compilable();
910 mh->clear_not_c2_compilable();
911 mh->clear_not_c2_osr_compilable();
912 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
913 if (mcs != NULL) {
914 mcs->backedge_counter()->init();
915 mcs->invocation_counter()->init();
916 mcs->set_interpreter_invocation_count(0);
917 mcs->set_interpreter_throwout_count(0);
918
919 #ifdef TIERED
920 mcs->set_rate(0.0F);
921 mh->set_prev_event_count(0);
922 mh->set_prev_time(0);
923 #endif
924 }
925 WB_END
926
927 template <typename T>
928 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
929 if (name == NULL) {
930 return false;
931 }
932 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
933 const char* flag_name = env->GetStringUTFChars(name, NULL);
934 CHECK_JNI_EXCEPTION_(env, false);
935 Flag::Error result = (*TAt)(flag_name, value, true, true);
936 env->ReleaseStringUTFChars(name, flag_name);
937 return (result == Flag::SUCCESS);
938 }
939
940 template <typename T>
941 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
942 if (name == NULL) {
943 return false;
944 }
945 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
946 const char* flag_name = env->GetStringUTFChars(name, NULL);
947 CHECK_JNI_EXCEPTION_(env, false);
948 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
949 env->ReleaseStringUTFChars(name, flag_name);
950 return (result == Flag::SUCCESS);
951 }
952
953 template <typename T>
954 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
955 ResourceMark rm(thread);
956 jclass clazz = env->FindClass(name->as_C_string());
957 CHECK_JNI_EXCEPTION_(env, NULL);
958 jmethodID methodID = env->GetStaticMethodID(clazz,
959 vmSymbols::valueOf_name()->as_C_string(),
960 sig->as_C_string());
961 CHECK_JNI_EXCEPTION_(env, NULL);
962 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
963 CHECK_JNI_EXCEPTION_(env, NULL);
964 return result;
965 }
966
967 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
968 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
969 }
970 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
971 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
972 }
973 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
974 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
975 }
976 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
977 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
978 }*/
979 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
980 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
981 }
982
983 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
984 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
985 const char* flag_name = env->GetStringUTFChars(name, NULL);
986 CHECK_JNI_EXCEPTION_(env, NULL);
987 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
988 env->ReleaseStringUTFChars(name, flag_name);
989 return result;
990 }
991
992 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
993 Flag* flag = getVMFlag(thread, env, name);
994 return (flag != NULL) && flag->is_constant_in_binary();
995 WB_END
996
997 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
998 Flag* flag = getVMFlag(thread, env, name);
999 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1000 WB_END
1001
1002 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1003 bool result;
1004 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1005 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1006 return booleanBox(thread, env, result);
1007 }
1008 return NULL;
1009 WB_END
1010
1011 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1012 int result;
1013 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1014 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1015 return longBox(thread, env, result);
1016 }
1017 return NULL;
1018 WB_END
1019
1020 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1021 uint result;
1022 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1023 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1024 return longBox(thread, env, result);
1025 }
1026 return NULL;
1027 WB_END
1028
1029 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1030 intx result;
1031 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1032 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1033 return longBox(thread, env, result);
1034 }
1035 return NULL;
1036 WB_END
1037
1038 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1039 uintx result;
1040 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1041 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1042 return longBox(thread, env, result);
1043 }
1044 return NULL;
1045 WB_END
1046
1047 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1048 uint64_t result;
1049 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1050 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1051 return longBox(thread, env, result);
1052 }
1053 return NULL;
1054 WB_END
1055
1056 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1057 uintx result;
1058 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1059 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1060 return longBox(thread, env, result);
1061 }
1062 return NULL;
1063 WB_END
1064
1065 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1066 double result;
1067 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1068 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1069 return doubleBox(thread, env, result);
1070 }
1071 return NULL;
1072 WB_END
1073
1074 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1075 ccstr ccstrResult;
1076 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1077 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1078 jstring result = env->NewStringUTF(ccstrResult);
1079 CHECK_JNI_EXCEPTION_(env, NULL);
1080 return result;
1081 }
1082 return NULL;
1083 WB_END
1084
1085 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1086 bool result = value == JNI_TRUE ? true : false;
1087 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1088 WB_END
1089
1090 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1091 int result = value;
1092 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1093 WB_END
1094
1095 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1096 uint result = value;
1097 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1098 WB_END
1099
1100 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1101 intx result = value;
1102 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1103 WB_END
1104
1105 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1106 uintx result = value;
1107 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1108 WB_END
1109
1110 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1111 uint64_t result = value;
1112 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1113 WB_END
1114
1115 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1116 size_t result = value;
1117 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1118 WB_END
1119
1120 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1121 double result = value;
1122 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1123 WB_END
1124
1125 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1126 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1127 const char* ccstrValue;
1128 if (value == NULL) {
1129 ccstrValue = NULL;
1130 }
1131 else {
1132 ccstrValue = env->GetStringUTFChars(value, NULL);
1133 CHECK_JNI_EXCEPTION(env);
1134 }
1135 ccstr ccstrResult = ccstrValue;
1136 bool needFree;
1137 {
1138 ThreadInVMfromNative ttvfn(thread); // back to VM
1139 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1140 }
1141 if (value != NULL) {
1142 env->ReleaseStringUTFChars(value, ccstrValue);
1143 }
1144 if (needFree) {
1145 FREE_C_HEAP_ARRAY(char, ccstrResult);
1146 }
1147 WB_END
1148
1149 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1150 WhiteBox::compilation_locked = true;
1151 WB_END
1152
1153 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1154 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1155 WhiteBox::compilation_locked = false;
1156 mo.notify_all();
1157 WB_END
1158
1159 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1160 // Force a code cache sweep and block until it finished
1161 NMethodSweeper::force_sweep();
1162 WB_END
1163
1164 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1165 ResourceMark rm(THREAD);
1166 int len;
1167 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1168 return (StringTable::lookup(name, len) != NULL);
1169 WB_END
1170
1171 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1172 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
1173 Universe::heap()->collect(GCCause::_wb_full_gc);
1174 #if INCLUDE_ALL_GCS
1175 if (UseG1GC) {
1176 // Needs to be cleared explicitly for G1
1177 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
1178 }
1179 #endif // INCLUDE_ALL_GCS
1180 WB_END
1181
1182 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1183 Universe::heap()->collect(GCCause::_wb_young_gc);
1184 WB_END
1185
1186 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1187 // static+volatile in order to force the read to happen
1188 // (not be eliminated by the compiler)
1189 static char c;
1190 static volatile char* p;
1191
1192 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1193 if (p == NULL) {
1194 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1195 }
1196
1197 c = *p;
1198 WB_END
1199
1200 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1201 const char* features = VM_Version::features_string();
1202 ThreadToNativeFromVM ttn(thread);
1203 jstring features_string = env->NewStringUTF(features);
1204
1205 CHECK_JNI_EXCEPTION_(env, NULL);
1206
1207 return features_string;
1208 WB_END
1209
1210 int WhiteBox::get_blob_type(const CodeBlob* code) {
1211 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1212 if (code->is_aot()) {
1213 return -1;
1214 }
1215 return CodeCache::get_code_heap(code)->code_blob_type();
1216 }
1217
1218 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1219 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1220 return CodeCache::get_code_heap(blob_type);
1221 }
1222
1223 struct CodeBlobStub {
1224 CodeBlobStub(const CodeBlob* blob) :
1225 name(os::strdup(blob->name())),
1226 size(blob->size()),
1227 blob_type(WhiteBox::get_blob_type(blob)),
1228 address((jlong) blob) { }
1229 ~CodeBlobStub() { os::free((void*) name); }
1230 const char* const name;
1231 const jint size;
1232 const jint blob_type;
1233 const jlong address;
1234 };
1235
1236 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1237 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1238 CHECK_JNI_EXCEPTION_(env, NULL);
1239 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1240
1241 jstring name = env->NewStringUTF(cb->name);
1242 CHECK_JNI_EXCEPTION_(env, NULL);
1243 env->SetObjectArrayElement(result, 0, name);
1244
1245 jobject obj = integerBox(thread, env, cb->size);
1246 CHECK_JNI_EXCEPTION_(env, NULL);
1247 env->SetObjectArrayElement(result, 1, obj);
1248
1249 obj = integerBox(thread, env, cb->blob_type);
1250 CHECK_JNI_EXCEPTION_(env, NULL);
1251 env->SetObjectArrayElement(result, 2, obj);
1252
1253 obj = longBox(thread, env, cb->address);
1254 CHECK_JNI_EXCEPTION_(env, NULL);
1255 env->SetObjectArrayElement(result, 3, obj);
1256
1257 return result;
1258 }
1259
1260 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1261 ResourceMark rm(THREAD);
1262 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1263 CHECK_JNI_EXCEPTION_(env, NULL);
1264 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1265 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1266 jobjectArray result = NULL;
1267 if (code == NULL) {
1268 return result;
1269 }
1270 int comp_level = code->comp_level();
1271 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1272
1273 ThreadToNativeFromVM ttn(thread);
1274 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1275 CHECK_JNI_EXCEPTION_(env, NULL);
1276 result = env->NewObjectArray(5, clazz, NULL);
1277 if (result == NULL) {
1278 return result;
1279 }
1280
1281 CodeBlobStub stub(code);
1282 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1283 CHECK_JNI_EXCEPTION_(env, NULL);
1284 env->SetObjectArrayElement(result, 0, codeBlob);
1285
1286 jobject level = integerBox(thread, env, comp_level);
1287 CHECK_JNI_EXCEPTION_(env, NULL);
1288 env->SetObjectArrayElement(result, 1, level);
1289
1290 jbyteArray insts = env->NewByteArray(insts_size);
1291 CHECK_JNI_EXCEPTION_(env, NULL);
1292 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1293 env->SetObjectArrayElement(result, 2, insts);
1294
1295 jobject id = integerBox(thread, env, code->compile_id());
1296 CHECK_JNI_EXCEPTION_(env, NULL);
1297 env->SetObjectArrayElement(result, 3, id);
1298
1299 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1300 CHECK_JNI_EXCEPTION_(env, NULL);
1301 env->SetObjectArrayElement(result, 4, entry_point);
1302
1303 return result;
1304 WB_END
1305
1306 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1307 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1308 BufferBlob* blob;
1309 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1310 if (full_size < size) {
1311 full_size += round_to(size - full_size, oopSize);
1312 }
1313 {
1314 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1315 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1316 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1317 }
1318 // Track memory usage statistic after releasing CodeCache_lock
1319 MemoryService::track_code_cache_memory_usage();
1320 return blob;
1321 }
1322
1323 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1324 if (size < 0) {
1325 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1326 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1327 }
1328 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1329 WB_END
1330
1331 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1332 if (addr == 0) {
1333 return;
1334 }
1335 BufferBlob::free((BufferBlob*) addr);
1336 WB_END
1337
1338 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1339 ResourceMark rm;
1340 GrowableArray<CodeBlobStub*> blobs;
1341 {
1342 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1343 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1344 if (heap == NULL) {
1345 return NULL;
1346 }
1347 for (CodeBlob* cb = (CodeBlob*) heap->first();
1348 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1349 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1350 new (stub) CodeBlobStub(cb);
1351 blobs.append(stub);
1352 }
1353 }
1354 if (blobs.length() == 0) {
1355 return NULL;
1356 }
1357 ThreadToNativeFromVM ttn(thread);
1358 jobjectArray result = NULL;
1359 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1360 CHECK_JNI_EXCEPTION_(env, NULL);
1361 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1362 CHECK_JNI_EXCEPTION_(env, NULL);
1363 if (result == NULL) {
1364 return result;
1365 }
1366 int i = 0;
1367 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1368 it != blobs.end(); ++it) {
1369 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1370 CHECK_JNI_EXCEPTION_(env, NULL);
1371 env->SetObjectArrayElement(result, i, obj);
1372 CHECK_JNI_EXCEPTION_(env, NULL);
1373 ++i;
1374 }
1375 return result;
1376 WB_END
1377
1378 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1379 return CompileBroker::get_compilation_activity_mode();
1380 WB_END
1381
1382 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1383 if (addr == 0) {
1384 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1385 "WB_GetCodeBlob: addr is null");
1386 }
1387 ThreadToNativeFromVM ttn(thread);
1388 CodeBlobStub stub((CodeBlob*) addr);
1389 return codeBlob2objectArray(thread, env, &stub);
1390 WB_END
1391
1392 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1393 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1394 CHECK_JNI_EXCEPTION_(env, 0);
1395 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1396 return (jlong) mh->method_data();
1397 WB_END
1398
1399 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1400 return (jlong) Thread::current()->stack_size();
1401 WB_END
1402
1403 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1404 JavaThread* t = JavaThread::current();
1405 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1406 WB_END
1407
1408
1409 int WhiteBox::array_bytes_to_length(size_t bytes) {
1410 return Array<u1>::bytes_to_length(bytes);
1411 }
1412
1413 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1414 if (size < 0) {
1415 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1416 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1417 }
1418
1419 oop class_loader_oop = JNIHandles::resolve(class_loader);
1420 ClassLoaderData* cld = class_loader_oop != NULL
1421 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1422 : ClassLoaderData::the_null_class_loader_data();
1423
1424 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1425
1426 return (jlong)(uintptr_t)metadata;
1427 WB_END
1428
1429 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1430 oop class_loader_oop = JNIHandles::resolve(class_loader);
1431 ClassLoaderData* cld = class_loader_oop != NULL
1432 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1433 : ClassLoaderData::the_null_class_loader_data();
1434
1435 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1436 WB_END
1437
1438 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jstring version, jstring location,
1439 jobjectArray packages))
1440 Modules::define_module(module, version, location, packages, CHECK);
1441 WB_END
1442
1443 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1444 Modules::add_module_exports_qualified(from_module, package, to_module, CHECK);
1445 WB_END
1446
1447 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1448 Modules::add_module_exports_to_all_unnamed(module, package, CHECK);
1449 WB_END
1450
1451 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1452 Modules::add_module_exports(module, package, NULL, CHECK);
1453 WB_END
1454
1455 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1456 Modules::add_reads_module(from_module, source_module, CHECK);
1457 WB_END
1458
1459 WB_ENTRY(void, WB_AddModulePackage(JNIEnv* env, jobject o, jclass module, jstring package))
1460 Modules::add_module_package(module, package, CHECK);
1461 WB_END
1462
1463 WB_ENTRY(jobject, WB_GetModuleByPackageName(JNIEnv* env, jobject o, jobject loader, jstring package))
1464 return Modules::get_module_by_package_name(loader, package, THREAD);
1465 WB_END
1466
1467 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1468 if (inc < 0) {
1469 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1470 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1471 }
1472
1473 jlong max_size_t = (jlong) ((size_t) -1);
1474 if (inc > max_size_t) {
1475 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1476 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1477 }
1478
1479 size_t new_cap_until_GC = 0;
1480 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1481 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1482 if (!success) {
1483 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1484 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1485 "due to contention with another thread");
1486 }
1487 return (jlong) new_cap_until_GC;
1488 WB_END
1489
1490 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1491 return (jlong) MetaspaceGC::capacity_until_GC();
1492 WB_END
1493
1494 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1495 return MetaspaceGC::should_concurrent_collect();
1496 WB_END
1497
1498
1499 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1500 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1501 Monitor::_safepoint_check_always :
1502 Monitor::_safepoint_check_never;
1503 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1504 attemptedNoSafepointValue == JNI_TRUE);
1505 WB_END
1506
1507 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1508 oop obj_oop = JNIHandles::resolve(obj);
1509 return (jboolean) obj_oop->mark()->has_monitor();
1510 WB_END
1511
1512 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1513 VM_ForceSafepoint force_safepoint_op;
1514 VMThread::execute(&force_safepoint_op);
1515 WB_END
1516
1517 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1518 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1519 return (jlong) ikh->constants();
1520 WB_END
1521
1522 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1523 return ConstantPool::CPCACHE_INDEX_TAG;
1524 WB_END
1525
1526 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1527 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1528 ConstantPool* cp = ikh->constants();
1529 if (cp->cache() == NULL) {
1530 return -1;
1531 }
1532 return cp->cache()->length();
1533 WB_END
1534
1535 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1536 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1537 ConstantPool* cp = ikh->constants();
1538 if (cp->cache() == NULL) {
1539 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1540 }
1541 jint cpci = index;
1542 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1543 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1544 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1545 }
1546 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1547 return cpi;
1548 WB_END
1549
1550 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1551 return ConstantPool::encode_invokedynamic_index(index);
1552 WB_END
1553
1554 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1555 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1556 VMThread::execute(&clear_ics);
1557 WB_END
1558
1559 template <typename T>
1560 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1561 assert(value != NULL, "sanity");
1562 if (method == NULL || name == NULL) {
1563 return false;
1564 }
1565 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1566 CHECK_JNI_EXCEPTION_(env, false);
1567 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1568 // can't be in VM when we call JNI
1569 ThreadToNativeFromVM ttnfv(thread);
1570 const char* flag_name = env->GetStringUTFChars(name, NULL);
1571 CHECK_JNI_EXCEPTION_(env, false);
1572 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1573 env->ReleaseStringUTFChars(name, flag_name);
1574 return result;
1575 }
1576
1577 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1578 bool result;
1579 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1580 // can't be in VM when we call JNI
1581 ThreadToNativeFromVM ttnfv(thread);
1582 return booleanBox(thread, env, result);
1583 }
1584 return NULL;
1585 WB_END
1586
1587 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1588 intx result;
1589 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1590 // can't be in VM when we call JNI
1591 ThreadToNativeFromVM ttnfv(thread);
1592 return longBox(thread, env, result);
1593 }
1594 return NULL;
1595 WB_END
1596
1597 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1598 uintx result;
1599 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1600 // can't be in VM when we call JNI
1601 ThreadToNativeFromVM ttnfv(thread);
1602 return longBox(thread, env, result);
1603 }
1604 return NULL;
1605 WB_END
1606
1607 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1608 double result;
1609 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1610 // can't be in VM when we call JNI
1611 ThreadToNativeFromVM ttnfv(thread);
1612 return doubleBox(thread, env, result);
1613 }
1614 return NULL;
1615 WB_END
1616
1617 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1618 ccstr ccstrResult;
1619 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1620 // can't be in VM when we call JNI
1621 ThreadToNativeFromVM ttnfv(thread);
1622 jstring result = env->NewStringUTF(ccstrResult);
1623 CHECK_JNI_EXCEPTION_(env, NULL);
1624 return result;
1625 }
1626 return NULL;
1627 WB_END
1628
1629 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1630 oop obj_oop = JNIHandles::resolve(obj);
1631 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1632 WB_END
1633
1634 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1635 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1636 WB_END
1637
1638 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1639 return StringTable::shared_string_ignored();
1640 WB_END
1641
1642 //Some convenience methods to deal with objects from java
1643 int WhiteBox::offset_for_field(const char* field_name, oop object,
1644 Symbol* signature_symbol) {
1645 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1646 Thread* THREAD = Thread::current();
1647
1648 //Get the class of our object
1649 Klass* arg_klass = object->klass();
1650 //Turn it into an instance-klass
1651 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1652
1653 //Create symbols to look for in the class
1654 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1655 THREAD);
1656
1657 //To be filled in with an offset of the field we're looking for
1658 fieldDescriptor fd;
1659
1660 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1661 if (res == NULL) {
1662 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1663 name_symbol->as_C_string());
1664 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1665 }
1666
1667 //fetch the field at the offset we've found
1668 int dest_offset = fd.offset();
1669
1670 return dest_offset;
1671 }
1672
1673
1674 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1675 int offset = offset_for_field(field_name, object,
1676 vmSymbols::string_signature());
1677 oop string = object->obj_field(offset);
1678 if (string == NULL) {
1679 return NULL;
1680 }
1681 const char* ret = java_lang_String::as_utf8_string(string);
1682 return ret;
1683 }
1684
1685 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1686 int offset =
1687 offset_for_field(field_name, object, vmSymbols::bool_signature());
1688 bool ret = (object->bool_field(offset) == JNI_TRUE);
1689 return ret;
1690 }
1691
1692 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1693 ResourceMark rm;
1694 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1695
1696 // one by one registration natives for exception catching
1697 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1698 CHECK_JNI_EXCEPTION(env);
1699 for (int i = 0, n = method_count; i < n; ++i) {
1700 // Skip dummy entries
1701 if (method_array[i].fnPtr == NULL) continue;
1702 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1703 jthrowable throwable_obj = env->ExceptionOccurred();
1704 if (throwable_obj != NULL) {
1705 env->ExceptionClear();
1706 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1707 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1708 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1709 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1710 method_array[i].name, method_array[i].signature);
1711 }
1712 } else {
1713 // Registration failed unexpectedly.
1714 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1715 method_array[i].name, method_array[i].signature);
1716 env->UnregisterNatives(wbclass);
1717 break;
1718 }
1719 }
1720 }
1721 }
1722
1723 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1724 // can't be in VM when we call JNI
1725 ThreadToNativeFromVM ttnfv(thread);
1726 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1727 CHECK_JNI_EXCEPTION_(env, 0);
1728 int ret;
1729 {
1730 ThreadInVMfromNative ttvfn(thread); // back to VM
1731 ret = DirectivesParser::parse_string(dir, tty);
1732 }
1733 env->ReleaseStringUTFChars(compDirect, dir);
1734 // -1 for error parsing directive. Return 0 as number of directives added.
1735 if (ret == -1) {
1736 ret = 0;
1737 }
1738 return (jint) ret;
1739 WB_END
1740
1741 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1742 DirectivesStack::pop(count);
1743 WB_END
1744
1745 #define CC (char*)
1746
1747 static JNINativeMethod methods[] = {
1748 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1749 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1750 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1751 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1752 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1753 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1754 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1755 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1756 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1757 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1758 {CC"parseCommandLine0",
1759 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1760 (void*) &WB_ParseCommandLine
1761 },
1762 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1763 (void*)&WB_AddToBootstrapClassLoaderSearch},
1764 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1765 (void*)&WB_AddToSystemClassLoaderSearch},
1766 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1767 (void*)&WB_GetCompressedOopsMaxHeapSize},
1768 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1769 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1770 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1771 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1772 #if INCLUDE_ALL_GCS
1773 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1774 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1775 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1776 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1777 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1778 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1779 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1780 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1781 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1782 (void*)&WB_G1AuxiliaryMemoryUsage },
1783 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1784 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1785 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1786 #endif // INCLUDE_ALL_GCS
1787 #if INCLUDE_NMT
1788 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1789 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1790 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1791 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1792 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1793 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1794 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1795 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1796 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1797 #endif // INCLUDE_NMT
1798 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1799 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1800 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1801 (void*)&WB_DeoptimizeMethod },
1802 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1803 (void*)&WB_IsMethodCompiled },
1804 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1805 (void*)&WB_IsMethodCompilable},
1806 {CC"isMethodQueuedForCompilation0",
1807 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1808 {CC"isIntrinsicAvailable0",
1809 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1810 (void*)&WB_IsIntrinsicAvailable},
1811 {CC"makeMethodNotCompilable0",
1812 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1813 {CC"testSetDontInlineMethod0",
1814 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1815 {CC"getMethodCompilationLevel0",
1816 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1817 {CC"getMethodEntryBci0",
1818 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1819 {CC"getCompileQueueSize",
1820 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1821 {CC"testSetForceInlineMethod0",
1822 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1823 {CC"enqueueMethodForCompilation0",
1824 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1825 {CC"enqueueInitializerForCompilation0",
1826 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
1827 {CC"clearMethodState0",
1828 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1829 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1830 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1831 {CC"matchesMethod",
1832 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1833 (void*)&WB_MatchesMethod},
1834 {CC"matchesInline",
1835 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1836 (void*)&WB_MatchesInline},
1837 {CC"shouldPrintAssembly",
1838 CC"(Ljava/lang/reflect/Executable;I)Z",
1839 (void*)&WB_ShouldPrintAssembly},
1840
1841 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1842 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1843 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1844 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1845 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1846 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1847 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1848 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1849 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1850 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1851 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1852 (void*)&WB_SetStringVMFlag},
1853 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1854 (void*)&WB_GetBooleanVMFlag},
1855 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1856 (void*)&WB_GetIntVMFlag},
1857 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1858 (void*)&WB_GetUintVMFlag},
1859 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1860 (void*)&WB_GetIntxVMFlag},
1861 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1862 (void*)&WB_GetUintxVMFlag},
1863 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1864 (void*)&WB_GetUint64VMFlag},
1865 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1866 (void*)&WB_GetSizeTVMFlag},
1867 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1868 (void*)&WB_GetDoubleVMFlag},
1869 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1870 (void*)&WB_GetStringVMFlag},
1871 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1872 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1873 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1874 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1875 {CC"allocateMetaspace",
1876 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1877 {CC"freeMetaspace",
1878 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1879 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1880 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1881 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
1882 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1883 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1884 (void*)&WB_GetNMethod },
1885 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1886 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1887 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1888 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1889 {CC"getCompilationActivityMode",
1890 CC"()I", (void*)&WB_GetCompilationActivityMode},
1891 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1892 (void*)&WB_GetMethodData },
1893 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1894 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1895 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1896 {CC"DefineModule", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
1897 (void*)&WB_DefineModule },
1898 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
1899 (void*)&WB_AddModuleExports },
1900 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
1901 (void*)&WB_AddReadsModule },
1902 {CC"AddModulePackage", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1903 (void*)&WB_AddModulePackage },
1904 {CC"GetModuleByPackageName", CC"(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;",
1905 (void*)&WB_GetModuleByPackageName },
1906 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1907 (void*)&WB_AddModuleExportsToAllUnnamed },
1908 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1909 (void*)&WB_AddModuleExportsToAll },
1910 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1911 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1912 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1913 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
1914 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
1915 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
1916 {CC"remapInstructionOperandFromCPCache0",
1917 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
1918 {CC"encodeConstantPoolIndyIndex0",
1919 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
1920 {CC"getMethodBooleanOption",
1921 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1922 (void*)&WB_GetMethodBooleaneOption},
1923 {CC"getMethodIntxOption",
1924 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1925 (void*)&WB_GetMethodIntxOption},
1926 {CC"getMethodUintxOption",
1927 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1928 (void*)&WB_GetMethodUintxOption},
1929 {CC"getMethodDoubleOption",
1930 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1931 (void*)&WB_GetMethodDoubleOption},
1932 {CC"getMethodStringOption",
1933 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1934 (void*)&WB_GetMethodStringOption},
1935 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1936 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1937 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1938 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
1939 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
1940 (void*)&WB_AddCompilerDirective },
1941 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
1942 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
1943 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
1944 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
1945 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
1946 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
1947 (void*)&WB_GetConcurrentGCPhases},
1948 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
1949 (void*)&WB_RequestConcurrentGCPhase},
1950 };
1951
1952 #undef CC
1953
1954 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1955 {
1956 if (WhiteBoxAPI) {
1957 // Make sure that wbclass is loaded by the null classloader
1958 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1959 Handle loader(THREAD, ikh->class_loader());
1960 if (loader.is_null()) {
1961 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1962 WhiteBox::register_extended(env, wbclass, thread);
1963 WhiteBox::set_used();
1964 }
1965 }
1966 }
1967 JVM_END