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/array.hpp"
43 #include "oops/constantPool.hpp"
44 #include "oops/objArrayKlass.hpp"
45 #include "oops/objArrayOop.inline.hpp"
46 #include "oops/oop.inline.hpp"
47 #include "prims/wbtestmethods/parserTests.hpp"
48 #include "prims/whitebox.hpp"
49 #include "runtime/arguments.hpp"
50 #include "runtime/compilationPolicy.hpp"
51 #include "runtime/deoptimization.hpp"
52 #include "runtime/interfaceSupport.hpp"
53 #include "runtime/javaCalls.hpp"
54 #include "runtime/os.hpp"
55 #include "runtime/sweeper.hpp"
56 #include "runtime/thread.hpp"
57 #include "runtime/vm_version.hpp"
58 #include "utilities/align.hpp"
59 #include "utilities/debug.hpp"
60 #include "utilities/exceptions.hpp"
61 #include "utilities/macros.hpp"
62 #if INCLUDE_ALL_GCS
63 #include "gc/g1/concurrentMarkThread.hpp"
64 #include "gc/g1/g1CollectedHeap.inline.hpp"
65 #include "gc/g1/g1ConcurrentMark.hpp"
66 #include "gc/g1/heapRegionRemSet.hpp"
67 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
68 #include "gc/parallel/adjoiningGenerations.hpp"
69 #endif // INCLUDE_ALL_GCS
70 #if INCLUDE_NMT
71 #include "services/mallocSiteTable.hpp"
72 #include "services/memTracker.hpp"
73 #include "utilities/nativeCallStack.hpp"
74 #endif // INCLUDE_NMT
75
76 #ifdef LINUX
77 #include "utilities/elfFile.hpp"
78 #endif
79
80 #define SIZE_T_MAX_VALUE ((size_t) -1)
81
82 bool WhiteBox::_used = false;
83 volatile bool WhiteBox::compilation_locked = false;
84
85 class VM_WhiteBoxOperation : public VM_Operation {
86 public:
87 VM_WhiteBoxOperation() { }
88 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
89 bool allow_nested_vm_operations() const { return true; }
90 };
91
92
93 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
94 return (jlong)(void*)JNIHandles::resolve(obj);
95 WB_END
96
97 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
98 return heapOopSize;
99 WB_END
100
101 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
102 return os::vm_page_size();
103 WB_END
104
105 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
106 return os::vm_allocation_granularity();
107 WB_END
108
109 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
110 return os::large_page_size();
111 WB_END
112
113 class WBIsKlassAliveClosure : public KlassClosure {
114 Symbol* _name;
115 bool _found;
116 public:
117 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
118
119 void do_klass(Klass* k) {
120 if (_found) return;
121 Symbol* ksym = k->name();
122 if (ksym->fast_compare(_name) == 0) {
123 _found = true;
124 }
125 }
126
127 bool found() const {
128 return _found;
129 }
130 };
131
132 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
133 oop h_name = JNIHandles::resolve(name);
134 if (h_name == NULL) return false;
135 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
136 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
137
138 WBIsKlassAliveClosure closure(sym);
139 ClassLoaderDataGraph::classes_do(&closure);
140
141 return closure.found();
142 WB_END
143
144 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
145 #if INCLUDE_JVMTI
146 ResourceMark rm;
147 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
148 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
149 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
150 assert(err == JVMTI_ERROR_NONE, "must not fail");
151 #endif
152 }
153 WB_END
154
155 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
156 #if INCLUDE_JVMTI
157 ResourceMark rm;
158 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
159 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
160 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
161 assert(err == JVMTI_ERROR_NONE, "must not fail");
162 #endif
163 }
164 WB_END
165
166
167 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
168 return (jlong)Arguments::max_heap_for_compressed_oops();
169 }
170 WB_END
171
172 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
173 CollectorPolicy * p = Universe::heap()->collector_policy();
174 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
175 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
176 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
177 p->space_alignment(), p->heap_alignment());
178 }
179 WB_END
180
181 #ifndef PRODUCT
182 // Forward declaration
183 void TestReservedSpace_test();
184 void TestReserveMemorySpecial_test();
185 void TestVirtualSpace_test();
186 void TestMetaspaceAux_test();
187 #endif
188
189 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
190 #ifndef PRODUCT
191 TestReservedSpace_test();
192 TestReserveMemorySpecial_test();
193 TestVirtualSpace_test();
194 TestMetaspaceAux_test();
195 #endif
196 WB_END
197
198 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
199 size_t granularity = os::vm_allocation_granularity();
200 ReservedHeapSpace rhs(100 * granularity, granularity, false);
201 VirtualSpace vs;
202 vs.initialize(rhs, 50 * granularity);
203
204 // Check if constraints are complied
205 if (!( UseCompressedOops && rhs.base() != NULL &&
206 Universe::narrow_oop_base() != NULL &&
207 Universe::narrow_oop_use_implicit_null_checks() )) {
208 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
209 "\tUseCompressedOops is %d\n"
210 "\trhs.base() is " PTR_FORMAT "\n"
211 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
212 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
213 UseCompressedOops,
214 p2i(rhs.base()),
215 p2i(Universe::narrow_oop_base()),
216 Universe::narrow_oop_use_implicit_null_checks());
217 return;
218 }
219 tty->print_cr("Reading from no access area... ");
220 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
221 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
222 WB_END
223
224 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
225 size_t magnitude, size_t iterations) {
226 size_t granularity = os::vm_allocation_granularity();
227 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
228 VirtualSpace vs;
229 if (!vs.initialize(rhs, 0)) {
230 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
231 return 3;
232 }
233
234 int seed = os::random();
235 tty->print_cr("Random seed is %d", seed);
236 os::init_random(seed);
237
238 for (size_t i = 0; i < iterations; i++) {
239
240 // Whether we will shrink or grow
241 bool shrink = os::random() % 2L == 0;
242
243 // Get random delta to resize virtual space
244 size_t delta = (size_t)os::random() % magnitude;
245
246 // If we are about to shrink virtual space below zero, then expand instead
247 if (shrink && vs.committed_size() < delta) {
248 shrink = false;
249 }
250
251 // Resizing by delta
252 if (shrink) {
253 vs.shrink_by(delta);
254 } else {
255 // If expanding fails expand_by will silently return false
256 vs.expand_by(delta, true);
257 }
258 }
259 return 0;
260 }
261
262 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
263 jlong reserved_space_size, jlong magnitude, jlong iterations))
264 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
265 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
266 iterations);
267 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
268 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
269 return 1;
270 }
271
272 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
273 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
274 if (sizeof(size_t) < sizeof(jlong)) {
275 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
276 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
277 || iterations > size_t_max_value) {
278 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
279 return 2;
280 }
281 }
282
283 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
284 (size_t) magnitude, (size_t) iterations);
285 WB_END
286
287 static const jint serial_code = 1;
288 static const jint parallel_code = 2;
289 static const jint cms_code = 4;
290 static const jint g1_code = 8;
291
292 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
293 if (UseSerialGC) {
294 return serial_code;
295 } else if (UseParallelGC || UseParallelOldGC) {
296 return parallel_code;
297 } if (UseConcMarkSweepGC) {
298 return cms_code;
299 } else if (UseG1GC) {
300 return g1_code;
301 }
302 ShouldNotReachHere();
303 return 0;
304 WB_END
305
306 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
307 #if INCLUDE_ALL_GCS
308 return serial_code | parallel_code | cms_code | g1_code;
309 #else
310 return serial_code;
311 #endif // INCLUDE_ALL_GCS
312 WB_END
313
314 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
315 if (UseSerialGC) {
316 return FLAG_IS_ERGO(UseSerialGC);
317 } else if (UseParallelGC) {
318 return FLAG_IS_ERGO(UseParallelGC);
319 } else if (UseParallelOldGC) {
320 return FLAG_IS_ERGO(UseParallelOldGC);
321 } else if (UseConcMarkSweepGC) {
322 return FLAG_IS_ERGO(UseConcMarkSweepGC);
323 } else if (UseG1GC) {
324 return FLAG_IS_ERGO(UseG1GC);
325 }
326 ShouldNotReachHere();
327 return false;
328 WB_END
329
330 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
331 oop p = JNIHandles::resolve(obj);
332 #if INCLUDE_ALL_GCS
333 if (UseG1GC) {
334 G1CollectedHeap* g1 = G1CollectedHeap::heap();
335 const HeapRegion* hr = g1->heap_region_containing(p);
336 if (hr == NULL) {
337 return false;
338 }
339 return !(hr->is_young());
340 } else if (UseParallelGC) {
341 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
342 return !psh->is_in_young(p);
343 }
344 #endif // INCLUDE_ALL_GCS
345 GenCollectedHeap* gch = GenCollectedHeap::heap();
346 return !gch->is_in_young(p);
347 WB_END
348
349 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
350 oop p = JNIHandles::resolve(obj);
351 return p->size() * HeapWordSize;
352 WB_END
353
354 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
355 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
356 return (jlong)alignment;
357 WB_END
358
359 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
360 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
361 return (jlong)alignment;
362 WB_END
363
364 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
365 return Universe::heap()->supports_concurrent_phase_control();
366 WB_END
367
368 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
369 const char* const* phases = Universe::heap()->concurrent_phases();
370 jint nphases = 0;
371 for ( ; phases[nphases] != NULL; ++nphases) ;
372
373 ResourceMark rm(thread);
374 ThreadToNativeFromVM ttn(thread);
375 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
376 CHECK_JNI_EXCEPTION_(env, NULL);
377
378 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
379 CHECK_JNI_EXCEPTION_(env, NULL);
380
381 // If push fails, return with pending exception.
382 if (env->PushLocalFrame(nphases) < 0) return NULL;
383 for (jint i = 0; i < nphases; ++i) {
384 jstring phase = env->NewStringUTF(phases[i]);
385 CHECK_JNI_EXCEPTION_(env, NULL);
386 env->SetObjectArrayElement(result, i, phase);
387 CHECK_JNI_EXCEPTION_(env, NULL);
388 }
389 env->PopLocalFrame(NULL);
390
391 return result;
392 WB_END
393
394 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
395 Handle h_name(THREAD, JNIHandles::resolve(name));
396 ResourceMark rm;
397 const char* c_name = java_lang_String::as_utf8_string(h_name());
398 return Universe::heap()->request_concurrent_phase(c_name);
399 WB_END
400
401 #if INCLUDE_ALL_GCS
402 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
403 if (UseG1GC) {
404 G1CollectedHeap* g1 = G1CollectedHeap::heap();
405 oop result = JNIHandles::resolve(obj);
406 const HeapRegion* hr = g1->heap_region_containing(result);
407 return hr->is_humongous();
408 }
409 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
410 WB_END
411
412 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
413 if (UseG1GC) {
414 G1CollectedHeap* g1 = G1CollectedHeap::heap();
415 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
416 return hr->is_humongous();
417 }
418 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
419 WB_END
420
421 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
422 if (UseG1GC) {
423 G1CollectedHeap* g1 = G1CollectedHeap::heap();
424 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
425 return hr->is_free();
426 }
427 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
428 WB_END
429
430 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
431 if (UseG1GC) {
432 G1CollectedHeap* g1 = G1CollectedHeap::heap();
433 size_t nr = g1->max_regions();
434 return (jlong)nr;
435 }
436 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
437 WB_END
438
439 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
440 if (UseG1GC) {
441 G1CollectedHeap* g1 = G1CollectedHeap::heap();
442 size_t nr = g1->num_free_regions();
443 return (jlong)nr;
444 }
445 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
446 WB_END
447
448 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
449 if (UseG1GC) {
450 G1CollectedHeap* g1h = G1CollectedHeap::heap();
451 return g1h->concurrent_mark()->cmThread()->during_cycle();
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1h = G1CollectedHeap::heap();
459 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
460 g1h->collect(GCCause::_wb_conc_mark);
461 return true;
462 }
463 return false;
464 }
465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
466 WB_END
467
468 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
469 if (UseG1GC) {
470 return (jint)HeapRegion::GrainBytes;
471 }
472 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
473 WB_END
474
475 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
476 #if INCLUDE_ALL_GCS
477 if (UseParallelGC) {
478 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
479 }
480 #endif // INCLUDE_ALL_GCS
481 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
482 WB_END
483
484 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
485 #if INCLUDE_ALL_GCS
486 if (UseParallelGC) {
487 return ParallelScavengeHeap::heap()->generation_alignment();
488 }
489 #endif // INCLUDE_ALL_GCS
490 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
491 WB_END
492
493 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
494 #if INCLUDE_ALL_GCS
495 if (UseG1GC) {
496 ResourceMark rm(THREAD);
497 G1CollectedHeap* g1h = G1CollectedHeap::heap();
498 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
499 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
500 return JNIHandles::make_local(env, h());
501 }
502 #endif // INCLUDE_ALL_GCS
503 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
504 WB_END
505
506 class OldRegionsLivenessClosure: public HeapRegionClosure {
507
508 private:
509 const int _liveness;
510 size_t _total_count;
511 size_t _total_memory;
512 size_t _total_memory_to_free;
513
514 public:
515 OldRegionsLivenessClosure(int liveness) :
516 _liveness(liveness),
517 _total_count(0),
518 _total_memory(0),
519 _total_memory_to_free(0) { }
520
521 size_t total_count() { return _total_count; }
522 size_t total_memory() { return _total_memory; }
523 size_t total_memory_to_free() { return _total_memory_to_free; }
524
525 bool doHeapRegion(HeapRegion* r) {
526 if (r->is_old()) {
527 size_t prev_live = r->marked_bytes();
528 size_t live = r->live_bytes();
529 size_t size = r->used();
530 size_t reg_size = HeapRegion::GrainBytes;
531 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
532 _total_memory += size;
533 ++_total_count;
534 if (size == reg_size) {
535 // we don't include non-full regions since they are unlikely included in mixed gc
536 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
537 _total_memory_to_free += size - prev_live;
538 }
539 }
540 }
541 return false;
542 }
543 };
544
545
546 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
547 if (!UseG1GC) {
548 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
549 }
550 if (liveness < 0) {
551 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
552 }
553
554 G1CollectedHeap* g1h = G1CollectedHeap::heap();
555 OldRegionsLivenessClosure rli(liveness);
556 g1h->heap_region_iterate(&rli);
557
558 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
559 result->long_at_put(0, rli.total_count());
560 result->long_at_put(1, rli.total_memory());
561 result->long_at_put(2, rli.total_memory_to_free());
562 return (jlongArray) JNIHandles::make_local(env, result);
563 WB_END
564
565 #endif // INCLUDE_ALL_GCS
566
567 #if INCLUDE_NMT
568 // Alloc memory using the test memory type so that we can use that to see if
569 // NMT picks it up correctly
570 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
571 jlong addr = 0;
572 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
573 return addr;
574 WB_END
575
576 // Alloc memory with pseudo call stack. The test can create psudo malloc
577 // allocation site to stress the malloc tracking.
578 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
579 address pc = (address)(size_t)pseudo_stack;
580 NativeCallStack stack(&pc, 1);
581 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
582 WB_END
583
584 // Free the memory allocated by NMTAllocTest
585 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
586 os::free((void*)(uintptr_t)mem);
587 WB_END
588
589 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
590 jlong addr = 0;
591
592 addr = (jlong)(uintptr_t)os::reserve_memory(size);
593 MemTracker::record_virtual_memory_type((address)addr, mtTest);
594
595 return addr;
596 WB_END
597
598 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
599 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
600 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
601 WB_END
602
603 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
604 os::uncommit_memory((char *)(uintptr_t)addr, size);
605 WB_END
606
607 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
608 os::release_memory((char *)(uintptr_t)addr, size);
609 WB_END
610
611 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
612 // Test that we can downgrade NMT levels but not upgrade them.
613 if (MemTracker::tracking_level() == NMT_off) {
614 MemTracker::transition_to(NMT_off);
615 return MemTracker::tracking_level() == NMT_off;
616 } else {
617 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
618 MemTracker::transition_to(NMT_summary);
619 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
620
621 // Can't go to detail once NMT is set to summary.
622 MemTracker::transition_to(NMT_detail);
623 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
624
625 // Shutdown sets tracking level to minimal.
626 MemTracker::shutdown();
627 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
628
629 // Once the tracking level is minimal, we cannot increase to summary.
630 // The code ignores this request instead of asserting because if the malloc site
631 // table overflows in another thread, it tries to change the code to summary.
632 MemTracker::transition_to(NMT_summary);
633 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
634
635 // Really can never go up to detail, verify that the code would never do this.
636 MemTracker::transition_to(NMT_detail);
637 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
638 return MemTracker::tracking_level() == NMT_minimal;
639 }
640 WB_END
641
642 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
643 int hash_size = MallocSiteTable::hash_buckets();
644 assert(hash_size > 0, "NMT hash_size should be > 0");
645 return (jint)hash_size;
646 WB_END
647 #endif // INCLUDE_NMT
648
649 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
650 assert(method != NULL, "method should not be null");
651 ThreadToNativeFromVM ttn(thread);
652 return env->FromReflectedMethod(method);
653 }
654
655 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
656 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
657 private:
658 int _result;
659 const bool _make_not_entrant;
660 public:
661 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
662 _result(0), _make_not_entrant(make_not_entrant) { }
663 int result() const { return _result; }
664
665 void doit() {
666 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
667 if (t->has_last_Java_frame()) {
668 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
669 frame* f = fst.current();
670 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
671 RegisterMap* reg_map = fst.register_map();
672 Deoptimization::deoptimize(t, *f, reg_map);
673 if (_make_not_entrant) {
674 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
675 assert(cm != NULL, "sanity check");
676 cm->make_not_entrant();
677 }
678 ++_result;
679 }
680 }
681 }
682 }
683 }
684 };
685
686 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
687 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
688 VMThread::execute(&op);
689 return op.result();
690 WB_END
691
692 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
693 MutexLockerEx mu(Compile_lock);
694 CodeCache::mark_all_nmethods_for_deoptimization();
695 VM_Deoptimize op;
696 VMThread::execute(&op);
697 WB_END
698
699 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
700 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
701 int result = 0;
702 CHECK_JNI_EXCEPTION_(env, result);
703 MutexLockerEx mu(Compile_lock);
704 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
705 if (is_osr) {
706 result += mh->mark_osr_nmethods();
707 } else if (mh->code() != NULL) {
708 mh->code()->mark_for_deoptimization();
709 ++result;
710 }
711 result += CodeCache::mark_for_deoptimization(mh());
712 if (result > 0) {
713 VM_Deoptimize op;
714 VMThread::execute(&op);
715 }
716 return result;
717 WB_END
718
719 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
720 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
721 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
722 MutexLockerEx mu(Compile_lock);
723 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
724 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
725 if (code == NULL) {
726 return JNI_FALSE;
727 }
728 return (code->is_alive() && !code->is_marked_for_deoptimization());
729 WB_END
730
731 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
732 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
733 return false;
734 }
735 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
736 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
737 MutexLockerEx mu(Compile_lock);
738 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
739 if (is_osr) {
740 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
741 } else {
742 return CompilationPolicy::can_be_compiled(mh, comp_level);
743 }
744 WB_END
745
746 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
747 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
748 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
749 MutexLockerEx mu(Compile_lock);
750 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
751 return mh->queued_for_compilation();
752 WB_END
753
754 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
755 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
756 return false; // Intrinsic is not available on a non-existent compilation level.
757 }
758 jmethodID method_id, compilation_context_id;
759 method_id = reflected_method_to_jmid(thread, env, method);
760 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
761 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
762
763 DirectiveSet* directive;
764 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
765 assert(comp != NULL, "compiler not available");
766 if (compilation_context != NULL) {
767 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
768 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
769 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
770 directive = DirectivesStack::getMatchingDirective(cch, comp);
771 } else {
772 // Calling with NULL matches default directive
773 directive = DirectivesStack::getDefaultDirective(comp);
774 }
775 bool result = comp->is_intrinsic_available(mh, directive);
776 DirectivesStack::release(directive);
777 return result;
778 WB_END
779
780 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
781 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
782 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
783 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
784 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
785 return (code != NULL ? code->comp_level() : CompLevel_none);
786 WB_END
787
788 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
789 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
790 CHECK_JNI_EXCEPTION(env);
791 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
792 if (is_osr) {
793 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
794 } else {
795 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
796 }
797 WB_END
798
799 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
800 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
801 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
802 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
803 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
804 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
805 WB_END
806
807 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
808 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
809 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
810 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
811 bool result = mh->dont_inline();
812 mh->set_dont_inline(value == JNI_TRUE);
813 return result;
814 WB_END
815
816 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
817 if (comp_level == CompLevel_any) {
818 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
819 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
820 } else {
821 return CompileBroker::queue_size(comp_level);
822 }
823 WB_END
824
825 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
826 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
827 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
828 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
829 bool result = mh->force_inline();
830 mh->set_force_inline(value == JNI_TRUE);
831 return result;
832 WB_END
833
834 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
835 // Screen for unavailable/bad comp level or null method
836 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) ||
837 CompileBroker::compiler(comp_level) == NULL) {
838 return false;
839 }
840 methodHandle mh(THREAD, method);
841 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
842 MutexLockerEx mu(Compile_lock);
843 return (mh->queued_for_compilation() || nm != NULL);
844 }
845
846 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
847 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
848 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
849 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
850 WB_END
851
852 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
853 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
854 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
855 WB_END
856
857 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
858 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
859 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
860
861 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
862 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
863 bool result = directive->PrintAssemblyOption;
864 DirectivesStack::release(directive);
865
866 return result;
867 WB_END
868
869 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
870 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
871 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
872
873 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
874
875 ResourceMark rm;
876 const char* error_msg = NULL;
877 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
878 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
879
880 if (m == NULL) {
881 assert(error_msg != NULL, "Always have an error message");
882 tty->print_cr("Got error: %s", error_msg);
883 return -1; // Pattern failed
884 }
885
886 // Pattern works - now check if it matches
887 int result;
888 if (m->match(mh, InlineMatcher::force_inline)) {
889 result = 2; // Force inline match
890 } else if (m->match(mh, InlineMatcher::dont_inline)) {
891 result = 1; // Dont inline match
892 } else {
893 result = 0; // No match
894 }
895 delete m;
896 return result;
897 WB_END
898
899 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
900 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
901 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
902
903 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
904
905 ResourceMark rm;
906 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
907
908 const char* error_msg = NULL;
909
910 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
911 if (m == NULL) {
912 assert(error_msg != NULL, "Must have error_msg");
913 tty->print_cr("Got error: %s", error_msg);
914 return -1;
915 }
916
917 // Pattern works - now check if it matches
918 int result = m->matches(mh);
919 delete m;
920 assert(result == 0 || result == 1, "Result out of range");
921 return result;
922 WB_END
923
924 static AlwaysFalseClosure always_false;
925
926 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
927 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
928 CHECK_JNI_EXCEPTION(env);
929 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
930 MutexLockerEx mu(Compile_lock);
931 MethodData* mdo = mh->method_data();
932 MethodCounters* mcs = mh->method_counters();
933
934 if (mdo != NULL) {
935 mdo->init();
936 ResourceMark rm;
937 int arg_count = mdo->method()->size_of_parameters();
938 for (int i = 0; i < arg_count; i++) {
939 mdo->set_arg_modified(i, 0);
940 }
941 MutexLockerEx mu(mdo->extra_data_lock());
942 mdo->clean_method_data(&always_false);
943 }
944
945 mh->clear_not_c1_compilable();
946 mh->clear_not_c2_compilable();
947 mh->clear_not_c2_osr_compilable();
948 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
949 if (mcs != NULL) {
950 mcs->backedge_counter()->init();
951 mcs->invocation_counter()->init();
952 mcs->set_interpreter_invocation_count(0);
953 mcs->set_interpreter_throwout_count(0);
954
955 #ifdef TIERED
956 mcs->set_rate(0.0F);
957 mh->set_prev_event_count(0);
958 mh->set_prev_time(0);
959 #endif
960 }
961 WB_END
962
963 template <typename T>
964 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
965 if (name == NULL) {
966 return false;
967 }
968 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
969 const char* flag_name = env->GetStringUTFChars(name, NULL);
970 CHECK_JNI_EXCEPTION_(env, false);
971 Flag::Error result = (*TAt)(flag_name, value, true, true);
972 env->ReleaseStringUTFChars(name, flag_name);
973 return (result == Flag::SUCCESS);
974 }
975
976 template <typename T>
977 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
978 if (name == NULL) {
979 return false;
980 }
981 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
982 const char* flag_name = env->GetStringUTFChars(name, NULL);
983 CHECK_JNI_EXCEPTION_(env, false);
984 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
985 env->ReleaseStringUTFChars(name, flag_name);
986 return (result == Flag::SUCCESS);
987 }
988
989 template <typename T>
990 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
991 ResourceMark rm(thread);
992 jclass clazz = env->FindClass(name->as_C_string());
993 CHECK_JNI_EXCEPTION_(env, NULL);
994 jmethodID methodID = env->GetStaticMethodID(clazz,
995 vmSymbols::valueOf_name()->as_C_string(),
996 sig->as_C_string());
997 CHECK_JNI_EXCEPTION_(env, NULL);
998 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
999 CHECK_JNI_EXCEPTION_(env, NULL);
1000 return result;
1001 }
1002
1003 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1004 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1005 }
1006 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1007 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1008 }
1009 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1010 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1011 }
1012 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1013 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1014 }*/
1015 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1016 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1017 }
1018
1019 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1020 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1021 const char* flag_name = env->GetStringUTFChars(name, NULL);
1022 CHECK_JNI_EXCEPTION_(env, NULL);
1023 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1024 env->ReleaseStringUTFChars(name, flag_name);
1025 return result;
1026 }
1027
1028 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1029 Flag* flag = getVMFlag(thread, env, name);
1030 return (flag != NULL) && flag->is_constant_in_binary();
1031 WB_END
1032
1033 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1034 Flag* flag = getVMFlag(thread, env, name);
1035 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1036 WB_END
1037
1038 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1039 bool result;
1040 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1041 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1042 return booleanBox(thread, env, result);
1043 }
1044 return NULL;
1045 WB_END
1046
1047 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1048 int result;
1049 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
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_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1057 uint result;
1058 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
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_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1066 intx result;
1067 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1068 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1069 return longBox(thread, env, result);
1070 }
1071 return NULL;
1072 WB_END
1073
1074 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1075 uintx result;
1076 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1077 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1078 return longBox(thread, env, result);
1079 }
1080 return NULL;
1081 WB_END
1082
1083 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1084 uint64_t result;
1085 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1086 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1087 return longBox(thread, env, result);
1088 }
1089 return NULL;
1090 WB_END
1091
1092 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1093 uintx result;
1094 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1095 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1096 return longBox(thread, env, result);
1097 }
1098 return NULL;
1099 WB_END
1100
1101 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1102 double result;
1103 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1104 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1105 return doubleBox(thread, env, result);
1106 }
1107 return NULL;
1108 WB_END
1109
1110 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1111 ccstr ccstrResult;
1112 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1113 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1114 jstring result = env->NewStringUTF(ccstrResult);
1115 CHECK_JNI_EXCEPTION_(env, NULL);
1116 return result;
1117 }
1118 return NULL;
1119 WB_END
1120
1121 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1122 bool result = value == JNI_TRUE ? true : false;
1123 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1124 WB_END
1125
1126 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1127 int result = value;
1128 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1129 WB_END
1130
1131 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1132 uint result = value;
1133 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1134 WB_END
1135
1136 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1137 intx result = value;
1138 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1139 WB_END
1140
1141 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1142 uintx result = value;
1143 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1144 WB_END
1145
1146 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1147 uint64_t result = value;
1148 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1149 WB_END
1150
1151 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1152 size_t result = value;
1153 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1154 WB_END
1155
1156 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1157 double result = value;
1158 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1159 WB_END
1160
1161 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1162 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1163 const char* ccstrValue;
1164 if (value == NULL) {
1165 ccstrValue = NULL;
1166 }
1167 else {
1168 ccstrValue = env->GetStringUTFChars(value, NULL);
1169 CHECK_JNI_EXCEPTION(env);
1170 }
1171 ccstr ccstrResult = ccstrValue;
1172 bool needFree;
1173 {
1174 ThreadInVMfromNative ttvfn(thread); // back to VM
1175 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1176 }
1177 if (value != NULL) {
1178 env->ReleaseStringUTFChars(value, ccstrValue);
1179 }
1180 if (needFree) {
1181 FREE_C_HEAP_ARRAY(char, ccstrResult);
1182 }
1183 WB_END
1184
1185 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1186 WhiteBox::compilation_locked = true;
1187 WB_END
1188
1189 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1190 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1191 WhiteBox::compilation_locked = false;
1192 mo.notify_all();
1193 WB_END
1194
1195 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1196 // Force a code cache sweep and block until it finished
1197 NMethodSweeper::force_sweep();
1198 WB_END
1199
1200 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1201 ResourceMark rm(THREAD);
1202 int len;
1203 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1204 return (StringTable::lookup(name, len) != NULL);
1205 WB_END
1206
1207 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1208 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
1209 Universe::heap()->collect(GCCause::_wb_full_gc);
1210 #if INCLUDE_ALL_GCS
1211 if (UseG1GC) {
1212 // Needs to be cleared explicitly for G1
1213 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
1214 }
1215 #endif // INCLUDE_ALL_GCS
1216 WB_END
1217
1218 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1219 Universe::heap()->collect(GCCause::_wb_young_gc);
1220 WB_END
1221
1222 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1223 // static+volatile in order to force the read to happen
1224 // (not be eliminated by the compiler)
1225 static char c;
1226 static volatile char* p;
1227
1228 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1229 if (p == NULL) {
1230 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1231 }
1232
1233 c = *p;
1234 WB_END
1235
1236 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1237 const char* features = VM_Version::features_string();
1238 ThreadToNativeFromVM ttn(thread);
1239 jstring features_string = env->NewStringUTF(features);
1240
1241 CHECK_JNI_EXCEPTION_(env, NULL);
1242
1243 return features_string;
1244 WB_END
1245
1246 int WhiteBox::get_blob_type(const CodeBlob* code) {
1247 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1248 if (code->is_aot()) {
1249 return -1;
1250 }
1251 return CodeCache::get_code_heap(code)->code_blob_type();
1252 }
1253
1254 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1255 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1256 return CodeCache::get_code_heap(blob_type);
1257 }
1258
1259 struct CodeBlobStub {
1260 CodeBlobStub(const CodeBlob* blob) :
1261 name(os::strdup(blob->name())),
1262 size(blob->size()),
1263 blob_type(WhiteBox::get_blob_type(blob)),
1264 address((jlong) blob) { }
1265 ~CodeBlobStub() { os::free((void*) name); }
1266 const char* const name;
1267 const jint size;
1268 const jint blob_type;
1269 const jlong address;
1270 };
1271
1272 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1273 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1274 CHECK_JNI_EXCEPTION_(env, NULL);
1275 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1276
1277 jstring name = env->NewStringUTF(cb->name);
1278 CHECK_JNI_EXCEPTION_(env, NULL);
1279 env->SetObjectArrayElement(result, 0, name);
1280
1281 jobject obj = integerBox(thread, env, cb->size);
1282 CHECK_JNI_EXCEPTION_(env, NULL);
1283 env->SetObjectArrayElement(result, 1, obj);
1284
1285 obj = integerBox(thread, env, cb->blob_type);
1286 CHECK_JNI_EXCEPTION_(env, NULL);
1287 env->SetObjectArrayElement(result, 2, obj);
1288
1289 obj = longBox(thread, env, cb->address);
1290 CHECK_JNI_EXCEPTION_(env, NULL);
1291 env->SetObjectArrayElement(result, 3, obj);
1292
1293 return result;
1294 }
1295
1296 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1297 ResourceMark rm(THREAD);
1298 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1299 CHECK_JNI_EXCEPTION_(env, NULL);
1300 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1301 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1302 jobjectArray result = NULL;
1303 if (code == NULL) {
1304 return result;
1305 }
1306 int comp_level = code->comp_level();
1307 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1308
1309 ThreadToNativeFromVM ttn(thread);
1310 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1311 CHECK_JNI_EXCEPTION_(env, NULL);
1312 result = env->NewObjectArray(5, clazz, NULL);
1313 if (result == NULL) {
1314 return result;
1315 }
1316
1317 CodeBlobStub stub(code);
1318 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1319 CHECK_JNI_EXCEPTION_(env, NULL);
1320 env->SetObjectArrayElement(result, 0, codeBlob);
1321
1322 jobject level = integerBox(thread, env, comp_level);
1323 CHECK_JNI_EXCEPTION_(env, NULL);
1324 env->SetObjectArrayElement(result, 1, level);
1325
1326 jbyteArray insts = env->NewByteArray(insts_size);
1327 CHECK_JNI_EXCEPTION_(env, NULL);
1328 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1329 env->SetObjectArrayElement(result, 2, insts);
1330
1331 jobject id = integerBox(thread, env, code->compile_id());
1332 CHECK_JNI_EXCEPTION_(env, NULL);
1333 env->SetObjectArrayElement(result, 3, id);
1334
1335 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1336 CHECK_JNI_EXCEPTION_(env, NULL);
1337 env->SetObjectArrayElement(result, 4, entry_point);
1338
1339 return result;
1340 WB_END
1341
1342 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1343 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1344 BufferBlob* blob;
1345 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1346 if (full_size < size) {
1347 full_size += align_up(size - full_size, oopSize);
1348 }
1349 {
1350 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1351 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1352 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1353 }
1354 // Track memory usage statistic after releasing CodeCache_lock
1355 MemoryService::track_code_cache_memory_usage();
1356 return blob;
1357 }
1358
1359 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1360 if (size < 0) {
1361 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1362 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1363 }
1364 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1365 WB_END
1366
1367 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1368 if (addr == 0) {
1369 return;
1370 }
1371 BufferBlob::free((BufferBlob*) addr);
1372 WB_END
1373
1374 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1375 ResourceMark rm;
1376 GrowableArray<CodeBlobStub*> blobs;
1377 {
1378 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1379 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1380 if (heap == NULL) {
1381 return NULL;
1382 }
1383 for (CodeBlob* cb = (CodeBlob*) heap->first();
1384 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1385 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1386 new (stub) CodeBlobStub(cb);
1387 blobs.append(stub);
1388 }
1389 }
1390 if (blobs.length() == 0) {
1391 return NULL;
1392 }
1393 ThreadToNativeFromVM ttn(thread);
1394 jobjectArray result = NULL;
1395 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1396 CHECK_JNI_EXCEPTION_(env, NULL);
1397 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1398 CHECK_JNI_EXCEPTION_(env, NULL);
1399 if (result == NULL) {
1400 return result;
1401 }
1402 int i = 0;
1403 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1404 it != blobs.end(); ++it) {
1405 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1406 CHECK_JNI_EXCEPTION_(env, NULL);
1407 env->SetObjectArrayElement(result, i, obj);
1408 CHECK_JNI_EXCEPTION_(env, NULL);
1409 ++i;
1410 }
1411 return result;
1412 WB_END
1413
1414 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1415 return CompileBroker::get_compilation_activity_mode();
1416 WB_END
1417
1418 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1419 if (addr == 0) {
1420 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1421 "WB_GetCodeBlob: addr is null");
1422 }
1423 ThreadToNativeFromVM ttn(thread);
1424 CodeBlobStub stub((CodeBlob*) addr);
1425 return codeBlob2objectArray(thread, env, &stub);
1426 WB_END
1427
1428 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1429 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1430 CHECK_JNI_EXCEPTION_(env, 0);
1431 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1432 return (jlong) mh->method_data();
1433 WB_END
1434
1435 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1436 return (jlong) Thread::current()->stack_size();
1437 WB_END
1438
1439 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1440 JavaThread* t = JavaThread::current();
1441 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1442 WB_END
1443
1444
1445 int WhiteBox::array_bytes_to_length(size_t bytes) {
1446 return Array<u1>::bytes_to_length(bytes);
1447 }
1448
1449 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1450 if (size < 0) {
1451 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1452 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1453 }
1454
1455 oop class_loader_oop = JNIHandles::resolve(class_loader);
1456 ClassLoaderData* cld = class_loader_oop != NULL
1457 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1458 : ClassLoaderData::the_null_class_loader_data();
1459
1460 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1461
1462 return (jlong)(uintptr_t)metadata;
1463 WB_END
1464
1465 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1466 oop class_loader_oop = JNIHandles::resolve(class_loader);
1467 ClassLoaderData* cld = class_loader_oop != NULL
1468 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1469 : ClassLoaderData::the_null_class_loader_data();
1470
1471 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1472 WB_END
1473
1474 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1475 jstring version, jstring location, jobjectArray packages))
1476 ResourceMark rm(THREAD);
1477
1478 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1479 objArrayHandle packages_h(THREAD, packages_oop);
1480 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1481
1482 char** pkgs = NULL;
1483 if (num_packages > 0) {
1484 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1485 for (int x = 0; x < num_packages; x++) {
1486 oop pkg_str = packages_h->obj_at(x);
1487 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1488 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1489 err_msg("Bad package name"));
1490 }
1491 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1492 }
1493 }
1494 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1495 WB_END
1496
1497 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1498 ResourceMark rm(THREAD);
1499 char* package_name = NULL;
1500 if (package != NULL) {
1501 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1502 }
1503 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1504 WB_END
1505
1506 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1507 ResourceMark rm(THREAD);
1508 char* package_name = NULL;
1509 if (package != NULL) {
1510 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1511 }
1512 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1513 WB_END
1514
1515 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1516 ResourceMark rm(THREAD);
1517 char* package_name = NULL;
1518 if (package != NULL) {
1519 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1520 }
1521 Modules::add_module_exports(module, package_name, NULL, CHECK);
1522 WB_END
1523
1524 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1525 Modules::add_reads_module(from_module, source_module, CHECK);
1526 WB_END
1527
1528 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1529 if (inc < 0) {
1530 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1531 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1532 }
1533
1534 jlong max_size_t = (jlong) ((size_t) -1);
1535 if (inc > max_size_t) {
1536 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1537 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1538 }
1539
1540 size_t new_cap_until_GC = 0;
1541 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1542 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1543 if (!success) {
1544 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1545 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1546 "due to contention with another thread");
1547 }
1548 return (jlong) new_cap_until_GC;
1549 WB_END
1550
1551 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1552 return (jlong) MetaspaceGC::capacity_until_GC();
1553 WB_END
1554
1555 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1556 return MetaspaceGC::should_concurrent_collect();
1557 WB_END
1558
1559 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1560 return (jlong)Metaspace::reserve_alignment();
1561 WB_END
1562
1563 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1564 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1565 Monitor::_safepoint_check_always :
1566 Monitor::_safepoint_check_never;
1567 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1568 attemptedNoSafepointValue == JNI_TRUE);
1569 WB_END
1570
1571 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1572 oop obj_oop = JNIHandles::resolve(obj);
1573 return (jboolean) obj_oop->mark()->has_monitor();
1574 WB_END
1575
1576 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1577 VM_ForceSafepoint force_safepoint_op;
1578 VMThread::execute(&force_safepoint_op);
1579 WB_END
1580
1581 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1582 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1583 return (jlong) ik->constants();
1584 WB_END
1585
1586 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1587 return ConstantPool::CPCACHE_INDEX_TAG;
1588 WB_END
1589
1590 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1591 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1592 ConstantPool* cp = ik->constants();
1593 if (cp->cache() == NULL) {
1594 return -1;
1595 }
1596 return cp->cache()->length();
1597 WB_END
1598
1599 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1600 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1601 ConstantPool* cp = ik->constants();
1602 if (cp->cache() == NULL) {
1603 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1604 }
1605 jint cpci = index;
1606 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1607 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1608 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1609 }
1610 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1611 return cpi;
1612 WB_END
1613
1614 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1615 return ConstantPool::encode_invokedynamic_index(index);
1616 WB_END
1617
1618 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1619 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1620 VMThread::execute(&clear_ics);
1621 WB_END
1622
1623 template <typename T>
1624 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1625 assert(value != NULL, "sanity");
1626 if (method == NULL || name == NULL) {
1627 return false;
1628 }
1629 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1630 CHECK_JNI_EXCEPTION_(env, false);
1631 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1632 // can't be in VM when we call JNI
1633 ThreadToNativeFromVM ttnfv(thread);
1634 const char* flag_name = env->GetStringUTFChars(name, NULL);
1635 CHECK_JNI_EXCEPTION_(env, false);
1636 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1637 env->ReleaseStringUTFChars(name, flag_name);
1638 return result;
1639 }
1640
1641 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1642 bool result;
1643 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1644 // can't be in VM when we call JNI
1645 ThreadToNativeFromVM ttnfv(thread);
1646 return booleanBox(thread, env, result);
1647 }
1648 return NULL;
1649 WB_END
1650
1651 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1652 intx result;
1653 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1654 // can't be in VM when we call JNI
1655 ThreadToNativeFromVM ttnfv(thread);
1656 return longBox(thread, env, result);
1657 }
1658 return NULL;
1659 WB_END
1660
1661 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1662 uintx result;
1663 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1664 // can't be in VM when we call JNI
1665 ThreadToNativeFromVM ttnfv(thread);
1666 return longBox(thread, env, result);
1667 }
1668 return NULL;
1669 WB_END
1670
1671 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1672 double result;
1673 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1674 // can't be in VM when we call JNI
1675 ThreadToNativeFromVM ttnfv(thread);
1676 return doubleBox(thread, env, result);
1677 }
1678 return NULL;
1679 WB_END
1680
1681 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1682 ccstr ccstrResult;
1683 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1684 // can't be in VM when we call JNI
1685 ThreadToNativeFromVM ttnfv(thread);
1686 jstring result = env->NewStringUTF(ccstrResult);
1687 CHECK_JNI_EXCEPTION_(env, NULL);
1688 return result;
1689 }
1690 return NULL;
1691 WB_END
1692
1693 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1694 oop obj_oop = JNIHandles::resolve(obj);
1695 return oopDesc::is_archive_object(obj_oop);
1696 WB_END
1697
1698 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1699 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1700 WB_END
1701
1702 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1703 return !StringTable::shared_string_mapped();
1704 WB_END
1705
1706 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1707 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1708 if (k->is_instance_klass()) {
1709 InstanceKlass *ik = InstanceKlass::cast(k);
1710 ConstantPool *cp = ik->constants();
1711 objArrayOop refs = cp->resolved_references();
1712 return (jobject)JNIHandles::make_local(env, refs);
1713 } else {
1714 return NULL;
1715 }
1716 WB_END
1717
1718 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1719 #if INCLUDE_CDS
1720 return true;
1721 #else
1722 return false;
1723 #endif
1724 WB_END
1725
1726 //Some convenience methods to deal with objects from java
1727 int WhiteBox::offset_for_field(const char* field_name, oop object,
1728 Symbol* signature_symbol) {
1729 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1730 Thread* THREAD = Thread::current();
1731
1732 //Get the class of our object
1733 Klass* arg_klass = object->klass();
1734 //Turn it into an instance-klass
1735 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1736
1737 //Create symbols to look for in the class
1738 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1739 THREAD);
1740
1741 //To be filled in with an offset of the field we're looking for
1742 fieldDescriptor fd;
1743
1744 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1745 if (res == NULL) {
1746 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1747 name_symbol->as_C_string());
1748 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1749 }
1750
1751 //fetch the field at the offset we've found
1752 int dest_offset = fd.offset();
1753
1754 return dest_offset;
1755 }
1756
1757
1758 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1759 int offset = offset_for_field(field_name, object,
1760 vmSymbols::string_signature());
1761 oop string = object->obj_field(offset);
1762 if (string == NULL) {
1763 return NULL;
1764 }
1765 const char* ret = java_lang_String::as_utf8_string(string);
1766 return ret;
1767 }
1768
1769 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1770 int offset =
1771 offset_for_field(field_name, object, vmSymbols::bool_signature());
1772 bool ret = (object->bool_field(offset) == JNI_TRUE);
1773 return ret;
1774 }
1775
1776 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1777 ResourceMark rm;
1778 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1779
1780 // one by one registration natives for exception catching
1781 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1782 CHECK_JNI_EXCEPTION(env);
1783 for (int i = 0, n = method_count; i < n; ++i) {
1784 // Skip dummy entries
1785 if (method_array[i].fnPtr == NULL) continue;
1786 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1787 jthrowable throwable_obj = env->ExceptionOccurred();
1788 if (throwable_obj != NULL) {
1789 env->ExceptionClear();
1790 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1791 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1792 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1793 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1794 method_array[i].name, method_array[i].signature);
1795 }
1796 } else {
1797 // Registration failed unexpectedly.
1798 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1799 method_array[i].name, method_array[i].signature);
1800 env->UnregisterNatives(wbclass);
1801 break;
1802 }
1803 }
1804 }
1805 }
1806
1807 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1808 // can't be in VM when we call JNI
1809 ThreadToNativeFromVM ttnfv(thread);
1810 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1811 CHECK_JNI_EXCEPTION_(env, 0);
1812 int ret;
1813 {
1814 ThreadInVMfromNative ttvfn(thread); // back to VM
1815 ret = DirectivesParser::parse_string(dir, tty);
1816 }
1817 env->ReleaseStringUTFChars(compDirect, dir);
1818 // -1 for error parsing directive. Return 0 as number of directives added.
1819 if (ret == -1) {
1820 ret = 0;
1821 }
1822 return (jint) ret;
1823 WB_END
1824
1825 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1826 DirectivesStack::pop(count);
1827 WB_END
1828
1829 // Checks that the library libfile has the noexecstack bit set.
1830 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1831 jboolean ret = false;
1832 #ifdef LINUX
1833 // Can't be in VM when we call JNI.
1834 ThreadToNativeFromVM ttnfv(thread);
1835 const char* lf = env->GetStringUTFChars(libfile, NULL);
1836 CHECK_JNI_EXCEPTION_(env, 0);
1837 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1838 env->ReleaseStringUTFChars(libfile, lf);
1839 #endif
1840 return ret;
1841 WB_END
1842
1843 #define CC (char*)
1844
1845 static JNINativeMethod methods[] = {
1846 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1847 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1848 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1849 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1850 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1851 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1852 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1853 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1854 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1855 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1856 {CC"parseCommandLine0",
1857 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1858 (void*) &WB_ParseCommandLine
1859 },
1860 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1861 (void*)&WB_AddToBootstrapClassLoaderSearch},
1862 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1863 (void*)&WB_AddToSystemClassLoaderSearch},
1864 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1865 (void*)&WB_GetCompressedOopsMaxHeapSize},
1866 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1867 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1868 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1869 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1870 #if INCLUDE_ALL_GCS
1871 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1872 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1873 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1874 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1875 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1876 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1877 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1878 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1879 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1880 (void*)&WB_G1AuxiliaryMemoryUsage },
1881 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1882 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1883 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1884 #endif // INCLUDE_ALL_GCS
1885 #if INCLUDE_NMT
1886 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1887 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1888 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1889 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1890 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1891 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1892 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1893 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1894 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1895 #endif // INCLUDE_NMT
1896 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1897 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1898 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1899 (void*)&WB_DeoptimizeMethod },
1900 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1901 (void*)&WB_IsMethodCompiled },
1902 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1903 (void*)&WB_IsMethodCompilable},
1904 {CC"isMethodQueuedForCompilation0",
1905 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1906 {CC"isIntrinsicAvailable0",
1907 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1908 (void*)&WB_IsIntrinsicAvailable},
1909 {CC"makeMethodNotCompilable0",
1910 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1911 {CC"testSetDontInlineMethod0",
1912 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1913 {CC"getMethodCompilationLevel0",
1914 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1915 {CC"getMethodEntryBci0",
1916 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1917 {CC"getCompileQueueSize",
1918 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1919 {CC"testSetForceInlineMethod0",
1920 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1921 {CC"enqueueMethodForCompilation0",
1922 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1923 {CC"enqueueInitializerForCompilation0",
1924 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
1925 {CC"clearMethodState0",
1926 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1927 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1928 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1929 {CC"matchesMethod",
1930 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1931 (void*)&WB_MatchesMethod},
1932 {CC"matchesInline",
1933 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1934 (void*)&WB_MatchesInline},
1935 {CC"shouldPrintAssembly",
1936 CC"(Ljava/lang/reflect/Executable;I)Z",
1937 (void*)&WB_ShouldPrintAssembly},
1938
1939 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1940 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1941 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1942 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1943 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1944 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1945 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1946 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1947 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1948 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1949 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1950 (void*)&WB_SetStringVMFlag},
1951 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1952 (void*)&WB_GetBooleanVMFlag},
1953 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1954 (void*)&WB_GetIntVMFlag},
1955 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1956 (void*)&WB_GetUintVMFlag},
1957 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1958 (void*)&WB_GetIntxVMFlag},
1959 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1960 (void*)&WB_GetUintxVMFlag},
1961 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1962 (void*)&WB_GetUint64VMFlag},
1963 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1964 (void*)&WB_GetSizeTVMFlag},
1965 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1966 (void*)&WB_GetDoubleVMFlag},
1967 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1968 (void*)&WB_GetStringVMFlag},
1969 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1970 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1971 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1972 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1973 {CC"allocateMetaspace",
1974 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1975 {CC"freeMetaspace",
1976 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1977 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1978 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1979 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
1980 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
1981 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1982 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1983 (void*)&WB_GetNMethod },
1984 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1985 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1986 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1987 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1988 {CC"getCompilationActivityMode",
1989 CC"()I", (void*)&WB_GetCompilationActivityMode},
1990 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1991 (void*)&WB_GetMethodData },
1992 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1993 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1994 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1995 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
1996 (void*)&WB_DefineModule },
1997 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
1998 (void*)&WB_AddModuleExports },
1999 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2000 (void*)&WB_AddReadsModule },
2001 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2002 (void*)&WB_AddModuleExportsToAllUnnamed },
2003 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2004 (void*)&WB_AddModuleExportsToAll },
2005 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2006 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2007 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2008 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2009 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2010 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2011 {CC"remapInstructionOperandFromCPCache0",
2012 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2013 {CC"encodeConstantPoolIndyIndex0",
2014 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2015 {CC"getMethodBooleanOption",
2016 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2017 (void*)&WB_GetMethodBooleaneOption},
2018 {CC"getMethodIntxOption",
2019 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2020 (void*)&WB_GetMethodIntxOption},
2021 {CC"getMethodUintxOption",
2022 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2023 (void*)&WB_GetMethodUintxOption},
2024 {CC"getMethodDoubleOption",
2025 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2026 (void*)&WB_GetMethodDoubleOption},
2027 {CC"getMethodStringOption",
2028 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2029 (void*)&WB_GetMethodStringOption},
2030 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2031 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2032 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2033 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2034 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2035 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2036 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2037 (void*)&WB_AddCompilerDirective },
2038 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2039 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2040 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2041 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2042 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2043 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2044 (void*)&WB_GetConcurrentGCPhases},
2045 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2046 (void*)&WB_RequestConcurrentGCPhase},
2047 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2048 (void*)&WB_CheckLibSpecifiesNoexecstack},
2049 };
2050
2051 #undef CC
2052
2053 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2054 {
2055 if (WhiteBoxAPI) {
2056 // Make sure that wbclass is loaded by the null classloader
2057 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2058 Handle loader(THREAD, ik->class_loader());
2059 if (loader.is_null()) {
2060 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2061 WhiteBox::register_extended(env, wbclass, thread);
2062 WhiteBox::set_used();
2063 }
2064 }
2065 }
2066 JVM_END