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/objArrayKlass.hpp"
44 #include "oops/objArrayOop.inline.hpp"
45 #include "oops/oop.inline.hpp"
46 #include "prims/wbtestmethods/parserTests.hpp"
47 #include "prims/whitebox.hpp"
48 #include "runtime/arguments.hpp"
49 #include "runtime/compilationPolicy.hpp"
50 #include "runtime/deoptimization.hpp"
51 #include "runtime/interfaceSupport.hpp"
52 #include "runtime/javaCalls.hpp"
53 #include "runtime/os.hpp"
54 #include "runtime/sweeper.hpp"
55 #include "runtime/thread.hpp"
56 #include "runtime/vm_version.hpp"
57 #include "utilities/array.hpp"
58 #include "utilities/debug.hpp"
59 #include "utilities/exceptions.hpp"
60 #include "utilities/macros.hpp"
61 #if INCLUDE_ALL_GCS
62 #include "gc/g1/concurrentMarkThread.hpp"
63 #include "gc/g1/g1CollectedHeap.inline.hpp"
64 #include "gc/g1/g1ConcurrentMark.hpp"
65 #include "gc/g1/heapRegionRemSet.hpp"
66 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
67 #include "gc/parallel/adjoiningGenerations.hpp"
68 #endif // INCLUDE_ALL_GCS
69 #if INCLUDE_NMT
70 #include "services/mallocSiteTable.hpp"
71 #include "services/memTracker.hpp"
72 #include "utilities/nativeCallStack.hpp"
73 #endif // INCLUDE_NMT
74
75
76 #define SIZE_T_MAX_VALUE ((size_t) -1)
77
78 bool WhiteBox::_used = false;
79 volatile bool WhiteBox::compilation_locked = false;
80
81 class VM_WhiteBoxOperation : public VM_Operation {
82 public:
83 VM_WhiteBoxOperation() { }
84 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
85 bool allow_nested_vm_operations() const { return true; }
86 };
87
88
89 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
90 return (jlong)(void*)JNIHandles::resolve(obj);
91 WB_END
92
93 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
94 return heapOopSize;
95 WB_END
96
97 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
98 return os::vm_page_size();
99 WB_END
100
101 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
102 return os::vm_allocation_granularity();
103 WB_END
104
105 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
106 return os::large_page_size();
107 WB_END
108
109 class WBIsKlassAliveClosure : public KlassClosure {
110 Symbol* _name;
111 bool _found;
112 public:
113 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
114
115 void do_klass(Klass* k) {
116 if (_found) return;
117 Symbol* ksym = k->name();
118 if (ksym->fast_compare(_name) == 0) {
119 _found = true;
120 }
121 }
122
123 bool found() const {
124 return _found;
125 }
126 };
127
128 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
129 oop h_name = JNIHandles::resolve(name);
130 if (h_name == NULL) return false;
131 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
132 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
133
134 WBIsKlassAliveClosure closure(sym);
135 ClassLoaderDataGraph::classes_do(&closure);
136
137 return closure.found();
138 WB_END
139
140 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
141 #if INCLUDE_JVMTI
142 ResourceMark rm;
143 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
144 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
145 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
146 assert(err == JVMTI_ERROR_NONE, "must not fail");
147 #endif
148 }
149 WB_END
150
151 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
152 #if INCLUDE_JVMTI
153 ResourceMark rm;
154 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
155 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
156 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
157 assert(err == JVMTI_ERROR_NONE, "must not fail");
158 #endif
159 }
160 WB_END
161
162
163 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
164 return (jlong)Arguments::max_heap_for_compressed_oops();
165 }
166 WB_END
167
168 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
169 CollectorPolicy * p = Universe::heap()->collector_policy();
170 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
171 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
172 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
173 p->space_alignment(), p->heap_alignment());
174 }
175 WB_END
176
177 #ifndef PRODUCT
178 // Forward declaration
179 void TestReservedSpace_test();
180 void TestReserveMemorySpecial_test();
181 void TestVirtualSpace_test();
182 void TestMetaspaceAux_test();
183 #endif
184
185 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
186 #ifndef PRODUCT
187 TestReservedSpace_test();
188 TestReserveMemorySpecial_test();
189 TestVirtualSpace_test();
190 TestMetaspaceAux_test();
191 #endif
192 WB_END
193
194 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
195 size_t granularity = os::vm_allocation_granularity();
196 ReservedHeapSpace rhs(100 * granularity, granularity, false);
197 VirtualSpace vs;
198 vs.initialize(rhs, 50 * granularity);
199
200 // Check if constraints are complied
201 if (!( UseCompressedOops && rhs.base() != NULL &&
202 Universe::narrow_oop_base() != NULL &&
203 Universe::narrow_oop_use_implicit_null_checks() )) {
204 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
205 "\tUseCompressedOops is %d\n"
206 "\trhs.base() is " PTR_FORMAT "\n"
207 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
208 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
209 UseCompressedOops,
210 p2i(rhs.base()),
211 p2i(Universe::narrow_oop_base()),
212 Universe::narrow_oop_use_implicit_null_checks());
213 return;
214 }
215 tty->print_cr("Reading from no access area... ");
216 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
217 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
218 WB_END
219
220 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
221 size_t magnitude, size_t iterations) {
222 size_t granularity = os::vm_allocation_granularity();
223 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
224 VirtualSpace vs;
225 if (!vs.initialize(rhs, 0)) {
226 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
227 return 3;
228 }
229
230 long seed = os::random();
231 tty->print_cr("Random seed is %ld", seed);
232 os::init_random(seed);
233
234 for (size_t i = 0; i < iterations; i++) {
235
236 // Whether we will shrink or grow
237 bool shrink = os::random() % 2L == 0;
238
239 // Get random delta to resize virtual space
240 size_t delta = (size_t)os::random() % magnitude;
241
242 // If we are about to shrink virtual space below zero, then expand instead
243 if (shrink && vs.committed_size() < delta) {
244 shrink = false;
245 }
246
247 // Resizing by delta
248 if (shrink) {
249 vs.shrink_by(delta);
250 } else {
251 // If expanding fails expand_by will silently return false
252 vs.expand_by(delta, true);
253 }
254 }
255 return 0;
256 }
257
258 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
259 jlong reserved_space_size, jlong magnitude, jlong iterations))
260 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
261 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
262 iterations);
263 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
264 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
265 return 1;
266 }
267
268 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
269 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
270 if (sizeof(size_t) < sizeof(jlong)) {
271 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
272 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
273 || iterations > size_t_max_value) {
274 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
275 return 2;
276 }
277 }
278
279 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
280 (size_t) magnitude, (size_t) iterations);
281 WB_END
282
283 static const jint serial_code = 1;
284 static const jint parallel_code = 2;
285 static const jint cms_code = 4;
286 static const jint g1_code = 8;
287
288 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
289 if (UseSerialGC) {
290 return serial_code;
291 } else if (UseParallelGC || UseParallelOldGC) {
292 return parallel_code;
293 } if (UseConcMarkSweepGC) {
294 return cms_code;
295 } else if (UseG1GC) {
296 return g1_code;
297 }
298 ShouldNotReachHere();
299 return 0;
300 WB_END
301
302 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
303 #if INCLUDE_ALL_GCS
304 return serial_code | parallel_code | cms_code | g1_code;
305 #else
306 return serial_code;
307 #endif // INCLUDE_ALL_GCS
308 WB_END
309
310 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
311 if (UseSerialGC) {
312 return FLAG_IS_ERGO(UseSerialGC);
313 } else if (UseParallelGC) {
314 return FLAG_IS_ERGO(UseParallelGC);
315 } else if (UseParallelOldGC) {
316 return FLAG_IS_ERGO(UseParallelOldGC);
317 } else if (UseConcMarkSweepGC) {
318 return FLAG_IS_ERGO(UseConcMarkSweepGC);
319 } else if (UseG1GC) {
320 return FLAG_IS_ERGO(UseG1GC);
321 }
322 ShouldNotReachHere();
323 return false;
324 WB_END
325
326 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
327 oop p = JNIHandles::resolve(obj);
328 #if INCLUDE_ALL_GCS
329 if (UseG1GC) {
330 G1CollectedHeap* g1 = G1CollectedHeap::heap();
331 const HeapRegion* hr = g1->heap_region_containing(p);
332 if (hr == NULL) {
333 return false;
334 }
335 return !(hr->is_young());
336 } else if (UseParallelGC) {
337 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
338 return !psh->is_in_young(p);
339 }
340 #endif // INCLUDE_ALL_GCS
341 GenCollectedHeap* gch = GenCollectedHeap::heap();
342 return !gch->is_in_young(p);
343 WB_END
344
345 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
346 oop p = JNIHandles::resolve(obj);
347 return p->size() * HeapWordSize;
348 WB_END
349
350 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
351 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
352 return (jlong)alignment;
353 WB_END
354
355 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
356 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
357 return (jlong)alignment;
358 WB_END
359
360 #if INCLUDE_ALL_GCS
361 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
362 if (UseG1GC) {
363 G1CollectedHeap* g1 = G1CollectedHeap::heap();
364 oop result = JNIHandles::resolve(obj);
365 const HeapRegion* hr = g1->heap_region_containing(result);
366 return hr->is_humongous();
367 }
368 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1IsHumongous: G1 GC is not enabled");
369 WB_END
370
371 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
372 if (UseG1GC) {
373 G1CollectedHeap* g1 = G1CollectedHeap::heap();
374 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
375 return hr->is_humongous();
376 }
377 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
378 WB_END
379
380 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
381 if (UseG1GC) {
382 G1CollectedHeap* g1 = G1CollectedHeap::heap();
383 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
384 return hr->is_free();
385 }
386 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
387 WB_END
388
389 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
390 if (UseG1GC) {
391 G1CollectedHeap* g1 = G1CollectedHeap::heap();
392 size_t nr = g1->max_regions();
393 return (jlong)nr;
394 }
395 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
396 WB_END
397
398 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
399 if (UseG1GC) {
400 G1CollectedHeap* g1 = G1CollectedHeap::heap();
401 size_t nr = g1->num_free_regions();
402 return (jlong)nr;
403 }
404 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
405 WB_END
406
407 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
408 if (UseG1GC) {
409 G1CollectedHeap* g1h = G1CollectedHeap::heap();
410 return g1h->concurrent_mark()->cmThread()->during_cycle();
411 }
412 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
413 WB_END
414
415 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
416 if (UseG1GC) {
417 G1CollectedHeap* g1h = G1CollectedHeap::heap();
418 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
419 g1h->collect(GCCause::_wb_conc_mark);
420 return true;
421 }
422 return false;
423 }
424 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
425 WB_END
426
427 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
428 if (UseG1GC) {
429 return (jint)HeapRegion::GrainBytes;
430 }
431 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1RegionSize: G1 GC is not enabled");
432 WB_END
433
434 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
435 #if INCLUDE_ALL_GCS
436 if (UseParallelGC) {
437 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
438 }
439 #endif // INCLUDE_ALL_GCS
440 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
441 WB_END
442
443 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
444 #if INCLUDE_ALL_GCS
445 if (UseParallelGC) {
446 return ParallelScavengeHeap::heap()->generation_alignment();
447 }
448 #endif // INCLUDE_ALL_GCS
449 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
450 WB_END
451
452 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
453 #if INCLUDE_ALL_GCS
454 if (UseG1GC) {
455 ResourceMark rm(THREAD);
456 G1CollectedHeap* g1h = G1CollectedHeap::heap();
457 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
458 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
459 return JNIHandles::make_local(env, h());
460 }
461 #endif // INCLUDE_ALL_GCS
462 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
463 WB_END
464
465 class OldRegionsLivenessClosure: public HeapRegionClosure {
466
467 private:
468 const int _liveness;
469 size_t _total_count;
470 size_t _total_memory;
471 size_t _total_memory_to_free;
472
473 public:
474 OldRegionsLivenessClosure(int liveness) :
475 _liveness(liveness),
476 _total_count(0),
477 _total_memory(0),
478 _total_memory_to_free(0) { }
479
480 size_t total_count() { return _total_count; }
481 size_t total_memory() { return _total_memory; }
482 size_t total_memory_to_free() { return _total_memory_to_free; }
483
484 bool doHeapRegion(HeapRegion* r) {
485 if (r->is_old()) {
486 size_t prev_live = r->marked_bytes();
487 size_t live = r->live_bytes();
488 size_t size = r->used();
489 size_t reg_size = HeapRegion::GrainBytes;
490 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
491 _total_memory += size;
492 ++_total_count;
493 if (size == reg_size) {
494 // we don't include non-full regions since they are unlikely included in mixed gc
495 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
496 _total_memory_to_free += size - prev_live;
497 }
498 }
499 }
500 return false;
501 }
502 };
503
504
505 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
506 if (!UseG1GC) {
507 THROW_MSG_NULL(vmSymbols::java_lang_RuntimeException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
508 }
509 if (liveness < 0) {
510 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
511 }
512
513 G1CollectedHeap* g1h = G1CollectedHeap::heap();
514 OldRegionsLivenessClosure rli(liveness);
515 g1h->heap_region_iterate(&rli);
516
517 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
518 result->long_at_put(0, rli.total_count());
519 result->long_at_put(1, rli.total_memory());
520 result->long_at_put(2, rli.total_memory_to_free());
521 return (jlongArray) JNIHandles::make_local(env, result);
522 WB_END
523
524 #endif // INCLUDE_ALL_GCS
525
526 #if INCLUDE_NMT
527 // Alloc memory using the test memory type so that we can use that to see if
528 // NMT picks it up correctly
529 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
530 jlong addr = 0;
531 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
532 return addr;
533 WB_END
534
535 // Alloc memory with pseudo call stack. The test can create psudo malloc
536 // allocation site to stress the malloc tracking.
537 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
538 address pc = (address)(size_t)pseudo_stack;
539 NativeCallStack stack(&pc, 1);
540 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
541 WB_END
542
543 // Free the memory allocated by NMTAllocTest
544 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
545 os::free((void*)(uintptr_t)mem);
546 WB_END
547
548 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
549 jlong addr = 0;
550
551 addr = (jlong)(uintptr_t)os::reserve_memory(size);
552 MemTracker::record_virtual_memory_type((address)addr, mtTest);
553
554 return addr;
555 WB_END
556
557 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
558 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
559 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
560 WB_END
561
562 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
563 os::uncommit_memory((char *)(uintptr_t)addr, size);
564 WB_END
565
566 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
567 os::release_memory((char *)(uintptr_t)addr, size);
568 WB_END
569
570 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
571 // Test that we can downgrade NMT levels but not upgrade them.
572 if (MemTracker::tracking_level() == NMT_off) {
573 MemTracker::transition_to(NMT_off);
574 return MemTracker::tracking_level() == NMT_off;
575 } else {
576 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
577 MemTracker::transition_to(NMT_summary);
578 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
579
580 // Can't go to detail once NMT is set to summary.
581 MemTracker::transition_to(NMT_detail);
582 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
583
584 // Shutdown sets tracking level to minimal.
585 MemTracker::shutdown();
586 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
587
588 // Once the tracking level is minimal, we cannot increase to summary.
589 // The code ignores this request instead of asserting because if the malloc site
590 // table overflows in another thread, it tries to change the code to summary.
591 MemTracker::transition_to(NMT_summary);
592 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
593
594 // Really can never go up to detail, verify that the code would never do this.
595 MemTracker::transition_to(NMT_detail);
596 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
597 return MemTracker::tracking_level() == NMT_minimal;
598 }
599 WB_END
600
601 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
602 int hash_size = MallocSiteTable::hash_buckets();
603 assert(hash_size > 0, "NMT hash_size should be > 0");
604 return (jint)hash_size;
605 WB_END
606 #endif // INCLUDE_NMT
607
608 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
609 assert(method != NULL, "method should not be null");
610 ThreadToNativeFromVM ttn(thread);
611 return env->FromReflectedMethod(method);
612 }
613
614 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
615 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
616 private:
617 int _result;
618 const bool _make_not_entrant;
619 public:
620 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
621 _result(0), _make_not_entrant(make_not_entrant) { }
622 int result() const { return _result; }
623
624 void doit() {
625 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
626 if (t->has_last_Java_frame()) {
627 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
628 frame* f = fst.current();
629 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
630 RegisterMap* reg_map = fst.register_map();
631 Deoptimization::deoptimize(t, *f, reg_map);
632 if (_make_not_entrant) {
633 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
634 assert(cm != NULL, "sanity check");
635 cm->make_not_entrant();
636 }
637 ++_result;
638 }
639 }
640 }
641 }
642 }
643 };
644
645 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
646 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
647 VMThread::execute(&op);
648 return op.result();
649 WB_END
650
651 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
652 MutexLockerEx mu(Compile_lock);
653 CodeCache::mark_all_nmethods_for_deoptimization();
654 VM_Deoptimize op;
655 VMThread::execute(&op);
656 WB_END
657
658 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
659 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
660 int result = 0;
661 CHECK_JNI_EXCEPTION_(env, result);
662 MutexLockerEx mu(Compile_lock);
663 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
664 if (is_osr) {
665 result += mh->mark_osr_nmethods();
666 } else if (mh->code() != NULL) {
667 mh->code()->mark_for_deoptimization();
668 ++result;
669 }
670 result += CodeCache::mark_for_deoptimization(mh());
671 if (result > 0) {
672 VM_Deoptimize op;
673 VMThread::execute(&op);
674 }
675 return result;
676 WB_END
677
678 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
679 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
680 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
681 MutexLockerEx mu(Compile_lock);
682 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
683 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
684 if (code == NULL) {
685 return JNI_FALSE;
686 }
687 return (code->is_alive() && !code->is_marked_for_deoptimization());
688 WB_END
689
690 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
691 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
692 return false;
693 }
694 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
695 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
696 MutexLockerEx mu(Compile_lock);
697 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
698 if (is_osr) {
699 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
700 } else {
701 return CompilationPolicy::can_be_compiled(mh, comp_level);
702 }
703 WB_END
704
705 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
706 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
707 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
708 MutexLockerEx mu(Compile_lock);
709 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
710 return mh->queued_for_compilation();
711 WB_END
712
713 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
714 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
715 return false; // Intrinsic is not available on a non-existent compilation level.
716 }
717 jmethodID method_id, compilation_context_id;
718 method_id = reflected_method_to_jmid(thread, env, method);
719 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
720 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
721
722 DirectiveSet* directive;
723 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
724 assert(comp != NULL, "compiler not available");
725 if (compilation_context != NULL) {
726 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
727 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
728 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
729 directive = DirectivesStack::getMatchingDirective(cch, comp);
730 } else {
731 // Calling with NULL matches default directive
732 directive = DirectivesStack::getDefaultDirective(comp);
733 }
734 bool result = comp->is_intrinsic_available(mh, directive);
735 DirectivesStack::release(directive);
736 return result;
737 WB_END
738
739 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
740 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
741 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
742 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
743 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
744 return (code != NULL ? code->comp_level() : CompLevel_none);
745 WB_END
746
747 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
748 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
749 CHECK_JNI_EXCEPTION(env);
750 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
751 if (is_osr) {
752 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
753 } else {
754 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
755 }
756 WB_END
757
758 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
759 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
760 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
761 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
762 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
763 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
764 WB_END
765
766 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
767 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
768 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
769 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
770 bool result = mh->dont_inline();
771 mh->set_dont_inline(value == JNI_TRUE);
772 return result;
773 WB_END
774
775 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
776 if (comp_level == CompLevel_any) {
777 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
778 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
779 } else {
780 return CompileBroker::queue_size(comp_level);
781 }
782 WB_END
783
784 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
785 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
786 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
787 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
788 bool result = mh->force_inline();
789 mh->set_force_inline(value == JNI_TRUE);
790 return result;
791 WB_END
792
793 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
794 // Screen for unavailable/bad comp level or null method
795 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) ||
796 CompileBroker::compiler(comp_level) == NULL) {
797 return false;
798 }
799 methodHandle mh(THREAD, method);
800 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
801 MutexLockerEx mu(Compile_lock);
802 return (mh->queued_for_compilation() || nm != NULL);
803 }
804
805 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
806 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
807 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
808 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
809 WB_END
810
811 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
812 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
813 return WhiteBox::compile_method(ikh->class_initializer(), comp_level, InvocationEntryBci, THREAD);
814 WB_END
815
816 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
817 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
818 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
819
820 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
821 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
822 bool result = directive->PrintAssemblyOption;
823 DirectivesStack::release(directive);
824
825 return result;
826 WB_END
827
828 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
829 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
830 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
831
832 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
833
834 ResourceMark rm;
835 const char* error_msg = NULL;
836 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
837 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
838
839 if (m == NULL) {
840 assert(error_msg != NULL, "Always have an error message");
841 tty->print_cr("Got error: %s", error_msg);
842 return -1; // Pattern failed
843 }
844
845 // Pattern works - now check if it matches
846 int result;
847 if (m->match(mh, InlineMatcher::force_inline)) {
848 result = 2; // Force inline match
849 } else if (m->match(mh, InlineMatcher::dont_inline)) {
850 result = 1; // Dont inline match
851 } else {
852 result = 0; // No match
853 }
854 delete m;
855 return result;
856 WB_END
857
858 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
859 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
860 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
861
862 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
863
864 ResourceMark rm;
865 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
866
867 const char* error_msg = NULL;
868
869 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
870 if (m == NULL) {
871 assert(error_msg != NULL, "Must have error_msg");
872 tty->print_cr("Got error: %s", error_msg);
873 return -1;
874 }
875
876 // Pattern works - now check if it matches
877 int result = m->matches(mh);
878 delete m;
879 assert(result == 0 || result == 1, "Result out of range");
880 return result;
881 WB_END
882
883 static AlwaysFalseClosure always_false;
884
885 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
886 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
887 CHECK_JNI_EXCEPTION(env);
888 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
889 MutexLockerEx mu(Compile_lock);
890 MethodData* mdo = mh->method_data();
891 MethodCounters* mcs = mh->method_counters();
892
893 if (mdo != NULL) {
894 mdo->init();
895 ResourceMark rm;
896 int arg_count = mdo->method()->size_of_parameters();
897 for (int i = 0; i < arg_count; i++) {
898 mdo->set_arg_modified(i, 0);
899 }
900 MutexLockerEx mu(mdo->extra_data_lock());
901 mdo->clean_method_data(&always_false);
902 }
903
904 mh->clear_not_c1_compilable();
905 mh->clear_not_c2_compilable();
906 mh->clear_not_c2_osr_compilable();
907 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
908 if (mcs != NULL) {
909 mcs->backedge_counter()->init();
910 mcs->invocation_counter()->init();
911 mcs->set_interpreter_invocation_count(0);
912 mcs->set_interpreter_throwout_count(0);
913
914 #ifdef TIERED
915 mcs->set_rate(0.0F);
916 mh->set_prev_event_count(0);
917 mh->set_prev_time(0);
918 #endif
919 }
920 WB_END
921
922 template <typename T>
923 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
924 if (name == NULL) {
925 return false;
926 }
927 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
928 const char* flag_name = env->GetStringUTFChars(name, NULL);
929 CHECK_JNI_EXCEPTION_(env, false);
930 Flag::Error result = (*TAt)(flag_name, value, true, true);
931 env->ReleaseStringUTFChars(name, flag_name);
932 return (result == Flag::SUCCESS);
933 }
934
935 template <typename T>
936 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
937 if (name == NULL) {
938 return false;
939 }
940 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
941 const char* flag_name = env->GetStringUTFChars(name, NULL);
942 CHECK_JNI_EXCEPTION_(env, false);
943 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
944 env->ReleaseStringUTFChars(name, flag_name);
945 return (result == Flag::SUCCESS);
946 }
947
948 template <typename T>
949 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
950 ResourceMark rm(thread);
951 jclass clazz = env->FindClass(name->as_C_string());
952 CHECK_JNI_EXCEPTION_(env, NULL);
953 jmethodID methodID = env->GetStaticMethodID(clazz,
954 vmSymbols::valueOf_name()->as_C_string(),
955 sig->as_C_string());
956 CHECK_JNI_EXCEPTION_(env, NULL);
957 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
958 CHECK_JNI_EXCEPTION_(env, NULL);
959 return result;
960 }
961
962 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
963 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
964 }
965 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
966 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
967 }
968 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
969 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
970 }
971 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
972 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
973 }*/
974 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
975 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
976 }
977
978 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
979 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
980 const char* flag_name = env->GetStringUTFChars(name, NULL);
981 CHECK_JNI_EXCEPTION_(env, NULL);
982 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
983 env->ReleaseStringUTFChars(name, flag_name);
984 return result;
985 }
986
987 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
988 Flag* flag = getVMFlag(thread, env, name);
989 return (flag != NULL) && flag->is_constant_in_binary();
990 WB_END
991
992 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
993 Flag* flag = getVMFlag(thread, env, name);
994 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
995 WB_END
996
997 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
998 bool result;
999 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1000 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1001 return booleanBox(thread, env, result);
1002 }
1003 return NULL;
1004 WB_END
1005
1006 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1007 int result;
1008 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1009 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1010 return longBox(thread, env, result);
1011 }
1012 return NULL;
1013 WB_END
1014
1015 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1016 uint result;
1017 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1018 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1019 return longBox(thread, env, result);
1020 }
1021 return NULL;
1022 WB_END
1023
1024 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1025 intx result;
1026 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1027 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1028 return longBox(thread, env, result);
1029 }
1030 return NULL;
1031 WB_END
1032
1033 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1034 uintx result;
1035 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1036 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1037 return longBox(thread, env, result);
1038 }
1039 return NULL;
1040 WB_END
1041
1042 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1043 uint64_t result;
1044 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1045 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1046 return longBox(thread, env, result);
1047 }
1048 return NULL;
1049 WB_END
1050
1051 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1052 uintx result;
1053 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1054 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1055 return longBox(thread, env, result);
1056 }
1057 return NULL;
1058 WB_END
1059
1060 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1061 double result;
1062 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1063 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1064 return doubleBox(thread, env, result);
1065 }
1066 return NULL;
1067 WB_END
1068
1069 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1070 ccstr ccstrResult;
1071 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1072 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1073 jstring result = env->NewStringUTF(ccstrResult);
1074 CHECK_JNI_EXCEPTION_(env, NULL);
1075 return result;
1076 }
1077 return NULL;
1078 WB_END
1079
1080 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1081 bool result = value == JNI_TRUE ? true : false;
1082 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1083 WB_END
1084
1085 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1086 int result = value;
1087 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1088 WB_END
1089
1090 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1091 uint result = value;
1092 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1093 WB_END
1094
1095 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1096 intx result = value;
1097 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1098 WB_END
1099
1100 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1101 uintx result = value;
1102 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1103 WB_END
1104
1105 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1106 uint64_t result = value;
1107 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1108 WB_END
1109
1110 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1111 size_t result = value;
1112 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1113 WB_END
1114
1115 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1116 double result = value;
1117 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1118 WB_END
1119
1120 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1121 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1122 const char* ccstrValue;
1123 if (value == NULL) {
1124 ccstrValue = NULL;
1125 }
1126 else {
1127 ccstrValue = env->GetStringUTFChars(value, NULL);
1128 CHECK_JNI_EXCEPTION(env);
1129 }
1130 ccstr ccstrResult = ccstrValue;
1131 bool needFree;
1132 {
1133 ThreadInVMfromNative ttvfn(thread); // back to VM
1134 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1135 }
1136 if (value != NULL) {
1137 env->ReleaseStringUTFChars(value, ccstrValue);
1138 }
1139 if (needFree) {
1140 FREE_C_HEAP_ARRAY(char, ccstrResult);
1141 }
1142 WB_END
1143
1144 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1145 WhiteBox::compilation_locked = true;
1146 WB_END
1147
1148 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1149 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1150 WhiteBox::compilation_locked = false;
1151 mo.notify_all();
1152 WB_END
1153
1154 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1155 // Force a code cache sweep and block until it finished
1156 NMethodSweeper::force_sweep();
1157 WB_END
1158
1159 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1160 ResourceMark rm(THREAD);
1161 int len;
1162 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1163 return (StringTable::lookup(name, len) != NULL);
1164 WB_END
1165
1166 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1167 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
1168 Universe::heap()->collect(GCCause::_wb_full_gc);
1169 #if INCLUDE_ALL_GCS
1170 if (UseG1GC) {
1171 // Needs to be cleared explicitly for G1
1172 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
1173 }
1174 #endif // INCLUDE_ALL_GCS
1175 WB_END
1176
1177 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1178 Universe::heap()->collect(GCCause::_wb_young_gc);
1179 WB_END
1180
1181 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1182 // static+volatile in order to force the read to happen
1183 // (not be eliminated by the compiler)
1184 static char c;
1185 static volatile char* p;
1186
1187 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1188 if (p == NULL) {
1189 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1190 }
1191
1192 c = *p;
1193 WB_END
1194
1195 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1196 const char* features = VM_Version::features_string();
1197 ThreadToNativeFromVM ttn(thread);
1198 jstring features_string = env->NewStringUTF(features);
1199
1200 CHECK_JNI_EXCEPTION_(env, NULL);
1201
1202 return features_string;
1203 WB_END
1204
1205 int WhiteBox::get_blob_type(const CodeBlob* code) {
1206 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1207 if (code->is_aot()) {
1208 return -1;
1209 }
1210 return CodeCache::get_code_heap(code)->code_blob_type();
1211 }
1212
1213 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1214 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1215 return CodeCache::get_code_heap(blob_type);
1216 }
1217
1218 struct CodeBlobStub {
1219 CodeBlobStub(const CodeBlob* blob) :
1220 name(os::strdup(blob->name())),
1221 size(blob->size()),
1222 blob_type(WhiteBox::get_blob_type(blob)),
1223 address((jlong) blob) { }
1224 ~CodeBlobStub() { os::free((void*) name); }
1225 const char* const name;
1226 const jint size;
1227 const jint blob_type;
1228 const jlong address;
1229 };
1230
1231 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1232 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1233 CHECK_JNI_EXCEPTION_(env, NULL);
1234 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1235
1236 jstring name = env->NewStringUTF(cb->name);
1237 CHECK_JNI_EXCEPTION_(env, NULL);
1238 env->SetObjectArrayElement(result, 0, name);
1239
1240 jobject obj = integerBox(thread, env, cb->size);
1241 CHECK_JNI_EXCEPTION_(env, NULL);
1242 env->SetObjectArrayElement(result, 1, obj);
1243
1244 obj = integerBox(thread, env, cb->blob_type);
1245 CHECK_JNI_EXCEPTION_(env, NULL);
1246 env->SetObjectArrayElement(result, 2, obj);
1247
1248 obj = longBox(thread, env, cb->address);
1249 CHECK_JNI_EXCEPTION_(env, NULL);
1250 env->SetObjectArrayElement(result, 3, obj);
1251
1252 return result;
1253 }
1254
1255 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1256 ResourceMark rm(THREAD);
1257 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1258 CHECK_JNI_EXCEPTION_(env, NULL);
1259 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1260 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1261 jobjectArray result = NULL;
1262 if (code == NULL) {
1263 return result;
1264 }
1265 int comp_level = code->comp_level();
1266 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1267
1268 ThreadToNativeFromVM ttn(thread);
1269 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1270 CHECK_JNI_EXCEPTION_(env, NULL);
1271 result = env->NewObjectArray(5, clazz, NULL);
1272 if (result == NULL) {
1273 return result;
1274 }
1275
1276 CodeBlobStub stub(code);
1277 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1278 CHECK_JNI_EXCEPTION_(env, NULL);
1279 env->SetObjectArrayElement(result, 0, codeBlob);
1280
1281 jobject level = integerBox(thread, env, comp_level);
1282 CHECK_JNI_EXCEPTION_(env, NULL);
1283 env->SetObjectArrayElement(result, 1, level);
1284
1285 jbyteArray insts = env->NewByteArray(insts_size);
1286 CHECK_JNI_EXCEPTION_(env, NULL);
1287 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1288 env->SetObjectArrayElement(result, 2, insts);
1289
1290 jobject id = integerBox(thread, env, code->compile_id());
1291 CHECK_JNI_EXCEPTION_(env, NULL);
1292 env->SetObjectArrayElement(result, 3, id);
1293
1294 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1295 CHECK_JNI_EXCEPTION_(env, NULL);
1296 env->SetObjectArrayElement(result, 4, entry_point);
1297
1298 return result;
1299 WB_END
1300
1301 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1302 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1303 BufferBlob* blob;
1304 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1305 if (full_size < size) {
1306 full_size += round_to(size - full_size, oopSize);
1307 }
1308 {
1309 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1310 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1311 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1312 }
1313 // Track memory usage statistic after releasing CodeCache_lock
1314 MemoryService::track_code_cache_memory_usage();
1315 return blob;
1316 }
1317
1318 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1319 if (size < 0) {
1320 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1321 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1322 }
1323 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1324 WB_END
1325
1326 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1327 if (addr == 0) {
1328 return;
1329 }
1330 BufferBlob::free((BufferBlob*) addr);
1331 WB_END
1332
1333 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1334 ResourceMark rm;
1335 GrowableArray<CodeBlobStub*> blobs;
1336 {
1337 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1338 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1339 if (heap == NULL) {
1340 return NULL;
1341 }
1342 for (CodeBlob* cb = (CodeBlob*) heap->first();
1343 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1344 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1345 new (stub) CodeBlobStub(cb);
1346 blobs.append(stub);
1347 }
1348 }
1349 if (blobs.length() == 0) {
1350 return NULL;
1351 }
1352 ThreadToNativeFromVM ttn(thread);
1353 jobjectArray result = NULL;
1354 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1355 CHECK_JNI_EXCEPTION_(env, NULL);
1356 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1357 CHECK_JNI_EXCEPTION_(env, NULL);
1358 if (result == NULL) {
1359 return result;
1360 }
1361 int i = 0;
1362 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1363 it != blobs.end(); ++it) {
1364 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1365 CHECK_JNI_EXCEPTION_(env, NULL);
1366 env->SetObjectArrayElement(result, i, obj);
1367 CHECK_JNI_EXCEPTION_(env, NULL);
1368 ++i;
1369 }
1370 return result;
1371 WB_END
1372
1373 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1374 return CompileBroker::get_compilation_activity_mode();
1375 WB_END
1376
1377 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1378 if (addr == 0) {
1379 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1380 "WB_GetCodeBlob: addr is null");
1381 }
1382 ThreadToNativeFromVM ttn(thread);
1383 CodeBlobStub stub((CodeBlob*) addr);
1384 return codeBlob2objectArray(thread, env, &stub);
1385 WB_END
1386
1387 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1388 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1389 CHECK_JNI_EXCEPTION_(env, 0);
1390 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1391 return (jlong) mh->method_data();
1392 WB_END
1393
1394 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1395 return (jlong) Thread::current()->stack_size();
1396 WB_END
1397
1398 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1399 JavaThread* t = JavaThread::current();
1400 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1401 WB_END
1402
1403
1404 int WhiteBox::array_bytes_to_length(size_t bytes) {
1405 return Array<u1>::bytes_to_length(bytes);
1406 }
1407
1408 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1409 if (size < 0) {
1410 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1411 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1412 }
1413
1414 oop class_loader_oop = JNIHandles::resolve(class_loader);
1415 ClassLoaderData* cld = class_loader_oop != NULL
1416 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1417 : ClassLoaderData::the_null_class_loader_data();
1418
1419 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1420
1421 return (jlong)(uintptr_t)metadata;
1422 WB_END
1423
1424 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1425 oop class_loader_oop = JNIHandles::resolve(class_loader);
1426 ClassLoaderData* cld = class_loader_oop != NULL
1427 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1428 : ClassLoaderData::the_null_class_loader_data();
1429
1430 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1431 WB_END
1432
1433 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jstring version, jstring location,
1434 jobjectArray packages))
1435 ResourceMark rm(THREAD);
1436
1437 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1438 objArrayHandle packages_h(THREAD, packages_oop);
1439 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1440
1441 char** pkgs = NULL;
1442 if (num_packages > 0) {
1443 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1444 for (int x = 0; x < num_packages; x++) {
1445 oop pkg_str = packages_h->obj_at(x);
1446 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1447 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1448 err_msg("Bad package name"));
1449 }
1450 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1451 }
1452 }
1453 Modules::define_module(module, version, location, (const char* const*)pkgs, num_packages, CHECK);
1454 WB_END
1455
1456 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1457 ResourceMark rm(THREAD);
1458 char* package_name = NULL;
1459 if (package != NULL) {
1460 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1461 }
1462 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1463 WB_END
1464
1465 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1466 ResourceMark rm(THREAD);
1467 char* package_name = NULL;
1468 if (package != NULL) {
1469 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1470 }
1471 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1472 WB_END
1473
1474 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1475 ResourceMark rm(THREAD);
1476 char* package_name = NULL;
1477 if (package != NULL) {
1478 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1479 }
1480 Modules::add_module_exports(module, package_name, NULL, CHECK);
1481 WB_END
1482
1483 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1484 Modules::add_reads_module(from_module, source_module, CHECK);
1485 WB_END
1486
1487 WB_ENTRY(void, WB_AddModulePackage(JNIEnv* env, jobject o, jclass module, jstring package))
1488 ResourceMark rm(THREAD);
1489 char* package_name = NULL;
1490 if (package != NULL) {
1491 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1492 }
1493 Modules::add_module_package(module, package_name, CHECK);
1494 WB_END
1495
1496 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1497 if (inc < 0) {
1498 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1499 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1500 }
1501
1502 jlong max_size_t = (jlong) ((size_t) -1);
1503 if (inc > max_size_t) {
1504 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1505 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1506 }
1507
1508 size_t new_cap_until_GC = 0;
1509 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1510 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1511 if (!success) {
1512 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1513 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1514 "due to contention with another thread");
1515 }
1516 return (jlong) new_cap_until_GC;
1517 WB_END
1518
1519 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1520 return (jlong) MetaspaceGC::capacity_until_GC();
1521 WB_END
1522
1523 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1524 return MetaspaceGC::should_concurrent_collect();
1525 WB_END
1526
1527
1528 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1529 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1530 Monitor::_safepoint_check_always :
1531 Monitor::_safepoint_check_never;
1532 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1533 attemptedNoSafepointValue == JNI_TRUE);
1534 WB_END
1535
1536 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1537 oop obj_oop = JNIHandles::resolve(obj);
1538 return (jboolean) obj_oop->mark()->has_monitor();
1539 WB_END
1540
1541 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1542 VM_ForceSafepoint force_safepoint_op;
1543 VMThread::execute(&force_safepoint_op);
1544 WB_END
1545
1546 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1547 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1548 return (jlong) ikh->constants();
1549 WB_END
1550
1551 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1552 return ConstantPool::CPCACHE_INDEX_TAG;
1553 WB_END
1554
1555 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1556 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1557 ConstantPool* cp = ikh->constants();
1558 if (cp->cache() == NULL) {
1559 return -1;
1560 }
1561 return cp->cache()->length();
1562 WB_END
1563
1564 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1565 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1566 ConstantPool* cp = ikh->constants();
1567 if (cp->cache() == NULL) {
1568 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1569 }
1570 jint cpci = index;
1571 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1572 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1573 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1574 }
1575 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1576 return cpi;
1577 WB_END
1578
1579 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1580 return ConstantPool::encode_invokedynamic_index(index);
1581 WB_END
1582
1583 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1584 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1585 VMThread::execute(&clear_ics);
1586 WB_END
1587
1588 template <typename T>
1589 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1590 assert(value != NULL, "sanity");
1591 if (method == NULL || name == NULL) {
1592 return false;
1593 }
1594 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1595 CHECK_JNI_EXCEPTION_(env, false);
1596 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1597 // can't be in VM when we call JNI
1598 ThreadToNativeFromVM ttnfv(thread);
1599 const char* flag_name = env->GetStringUTFChars(name, NULL);
1600 CHECK_JNI_EXCEPTION_(env, false);
1601 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1602 env->ReleaseStringUTFChars(name, flag_name);
1603 return result;
1604 }
1605
1606 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1607 bool result;
1608 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1609 // can't be in VM when we call JNI
1610 ThreadToNativeFromVM ttnfv(thread);
1611 return booleanBox(thread, env, result);
1612 }
1613 return NULL;
1614 WB_END
1615
1616 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1617 intx result;
1618 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1619 // can't be in VM when we call JNI
1620 ThreadToNativeFromVM ttnfv(thread);
1621 return longBox(thread, env, result);
1622 }
1623 return NULL;
1624 WB_END
1625
1626 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1627 uintx result;
1628 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1629 // can't be in VM when we call JNI
1630 ThreadToNativeFromVM ttnfv(thread);
1631 return longBox(thread, env, result);
1632 }
1633 return NULL;
1634 WB_END
1635
1636 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1637 double result;
1638 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1639 // can't be in VM when we call JNI
1640 ThreadToNativeFromVM ttnfv(thread);
1641 return doubleBox(thread, env, result);
1642 }
1643 return NULL;
1644 WB_END
1645
1646 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1647 ccstr ccstrResult;
1648 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1649 // can't be in VM when we call JNI
1650 ThreadToNativeFromVM ttnfv(thread);
1651 jstring result = env->NewStringUTF(ccstrResult);
1652 CHECK_JNI_EXCEPTION_(env, NULL);
1653 return result;
1654 }
1655 return NULL;
1656 WB_END
1657
1658 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1659 oop obj_oop = JNIHandles::resolve(obj);
1660 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1661 WB_END
1662
1663 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1664 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1665 WB_END
1666
1667 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1668 return StringTable::shared_string_ignored();
1669 WB_END
1670
1671 //Some convenience methods to deal with objects from java
1672 int WhiteBox::offset_for_field(const char* field_name, oop object,
1673 Symbol* signature_symbol) {
1674 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1675 Thread* THREAD = Thread::current();
1676
1677 //Get the class of our object
1678 Klass* arg_klass = object->klass();
1679 //Turn it into an instance-klass
1680 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1681
1682 //Create symbols to look for in the class
1683 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1684 THREAD);
1685
1686 //To be filled in with an offset of the field we're looking for
1687 fieldDescriptor fd;
1688
1689 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1690 if (res == NULL) {
1691 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1692 name_symbol->as_C_string());
1693 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1694 }
1695
1696 //fetch the field at the offset we've found
1697 int dest_offset = fd.offset();
1698
1699 return dest_offset;
1700 }
1701
1702
1703 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1704 int offset = offset_for_field(field_name, object,
1705 vmSymbols::string_signature());
1706 oop string = object->obj_field(offset);
1707 if (string == NULL) {
1708 return NULL;
1709 }
1710 const char* ret = java_lang_String::as_utf8_string(string);
1711 return ret;
1712 }
1713
1714 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1715 int offset =
1716 offset_for_field(field_name, object, vmSymbols::bool_signature());
1717 bool ret = (object->bool_field(offset) == JNI_TRUE);
1718 return ret;
1719 }
1720
1721 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1722 ResourceMark rm;
1723 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1724
1725 // one by one registration natives for exception catching
1726 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1727 CHECK_JNI_EXCEPTION(env);
1728 for (int i = 0, n = method_count; i < n; ++i) {
1729 // Skip dummy entries
1730 if (method_array[i].fnPtr == NULL) continue;
1731 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1732 jthrowable throwable_obj = env->ExceptionOccurred();
1733 if (throwable_obj != NULL) {
1734 env->ExceptionClear();
1735 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1736 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1737 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1738 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1739 method_array[i].name, method_array[i].signature);
1740 }
1741 } else {
1742 // Registration failed unexpectedly.
1743 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1744 method_array[i].name, method_array[i].signature);
1745 env->UnregisterNatives(wbclass);
1746 break;
1747 }
1748 }
1749 }
1750 }
1751
1752 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1753 // can't be in VM when we call JNI
1754 ThreadToNativeFromVM ttnfv(thread);
1755 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1756 CHECK_JNI_EXCEPTION_(env, 0);
1757 int ret;
1758 {
1759 ThreadInVMfromNative ttvfn(thread); // back to VM
1760 ret = DirectivesParser::parse_string(dir, tty);
1761 }
1762 env->ReleaseStringUTFChars(compDirect, dir);
1763 // -1 for error parsing directive. Return 0 as number of directives added.
1764 if (ret == -1) {
1765 ret = 0;
1766 }
1767 return (jint) ret;
1768 WB_END
1769
1770 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1771 DirectivesStack::pop(count);
1772 WB_END
1773
1774 #define CC (char*)
1775
1776 static JNINativeMethod methods[] = {
1777 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1778 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1779 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1780 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1781 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1782 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1783 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1784 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1785 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1786 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1787 {CC"parseCommandLine0",
1788 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1789 (void*) &WB_ParseCommandLine
1790 },
1791 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1792 (void*)&WB_AddToBootstrapClassLoaderSearch},
1793 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1794 (void*)&WB_AddToSystemClassLoaderSearch},
1795 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1796 (void*)&WB_GetCompressedOopsMaxHeapSize},
1797 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1798 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1799 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1800 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1801 #if INCLUDE_ALL_GCS
1802 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1803 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1804 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1805 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1806 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1807 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1808 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1809 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1810 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1811 (void*)&WB_G1AuxiliaryMemoryUsage },
1812 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1813 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1814 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1815 #endif // INCLUDE_ALL_GCS
1816 #if INCLUDE_NMT
1817 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1818 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1819 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1820 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1821 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1822 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1823 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1824 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1825 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1826 #endif // INCLUDE_NMT
1827 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1828 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1829 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1830 (void*)&WB_DeoptimizeMethod },
1831 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1832 (void*)&WB_IsMethodCompiled },
1833 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1834 (void*)&WB_IsMethodCompilable},
1835 {CC"isMethodQueuedForCompilation0",
1836 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1837 {CC"isIntrinsicAvailable0",
1838 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1839 (void*)&WB_IsIntrinsicAvailable},
1840 {CC"makeMethodNotCompilable0",
1841 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1842 {CC"testSetDontInlineMethod0",
1843 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1844 {CC"getMethodCompilationLevel0",
1845 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1846 {CC"getMethodEntryBci0",
1847 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1848 {CC"getCompileQueueSize",
1849 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1850 {CC"testSetForceInlineMethod0",
1851 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1852 {CC"enqueueMethodForCompilation0",
1853 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1854 {CC"enqueueInitializerForCompilation0",
1855 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
1856 {CC"clearMethodState0",
1857 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1858 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1859 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1860 {CC"matchesMethod",
1861 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1862 (void*)&WB_MatchesMethod},
1863 {CC"matchesInline",
1864 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1865 (void*)&WB_MatchesInline},
1866 {CC"shouldPrintAssembly",
1867 CC"(Ljava/lang/reflect/Executable;I)Z",
1868 (void*)&WB_ShouldPrintAssembly},
1869
1870 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1871 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1872 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1873 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1874 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1875 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1876 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1877 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1878 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1879 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1880 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1881 (void*)&WB_SetStringVMFlag},
1882 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1883 (void*)&WB_GetBooleanVMFlag},
1884 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1885 (void*)&WB_GetIntVMFlag},
1886 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1887 (void*)&WB_GetUintVMFlag},
1888 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1889 (void*)&WB_GetIntxVMFlag},
1890 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1891 (void*)&WB_GetUintxVMFlag},
1892 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1893 (void*)&WB_GetUint64VMFlag},
1894 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1895 (void*)&WB_GetSizeTVMFlag},
1896 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1897 (void*)&WB_GetDoubleVMFlag},
1898 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1899 (void*)&WB_GetStringVMFlag},
1900 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1901 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1902 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1903 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1904 {CC"allocateMetaspace",
1905 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1906 {CC"freeMetaspace",
1907 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1908 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1909 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1910 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
1911 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1912 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1913 (void*)&WB_GetNMethod },
1914 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1915 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1916 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1917 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1918 {CC"getCompilationActivityMode",
1919 CC"()I", (void*)&WB_GetCompilationActivityMode},
1920 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1921 (void*)&WB_GetMethodData },
1922 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1923 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1924 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1925 {CC"DefineModule", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
1926 (void*)&WB_DefineModule },
1927 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
1928 (void*)&WB_AddModuleExports },
1929 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
1930 (void*)&WB_AddReadsModule },
1931 {CC"AddModulePackage", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1932 (void*)&WB_AddModulePackage },
1933 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1934 (void*)&WB_AddModuleExportsToAllUnnamed },
1935 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1936 (void*)&WB_AddModuleExportsToAll },
1937 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1938 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1939 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1940 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
1941 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
1942 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
1943 {CC"remapInstructionOperandFromCPCache0",
1944 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
1945 {CC"encodeConstantPoolIndyIndex0",
1946 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
1947 {CC"getMethodBooleanOption",
1948 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1949 (void*)&WB_GetMethodBooleaneOption},
1950 {CC"getMethodIntxOption",
1951 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1952 (void*)&WB_GetMethodIntxOption},
1953 {CC"getMethodUintxOption",
1954 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1955 (void*)&WB_GetMethodUintxOption},
1956 {CC"getMethodDoubleOption",
1957 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1958 (void*)&WB_GetMethodDoubleOption},
1959 {CC"getMethodStringOption",
1960 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1961 (void*)&WB_GetMethodStringOption},
1962 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1963 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1964 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1965 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
1966 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
1967 (void*)&WB_AddCompilerDirective },
1968 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
1969 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
1970 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
1971 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
1972 };
1973
1974 #undef CC
1975
1976 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1977 {
1978 if (WhiteBoxAPI) {
1979 // Make sure that wbclass is loaded by the null classloader
1980 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1981 Handle loader(THREAD, ikh->class_loader());
1982 if (loader.is_null()) {
1983 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1984 WhiteBox::register_extended(env, wbclass, thread);
1985 WhiteBox::set_used();
1986 }
1987 }
1988 }
1989 JVM_END