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/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 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
361 return Universe::heap()->supports_concurrent_phase_control();
362 WB_END
363
364 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
365 const char* const* phases = Universe::heap()->concurrent_phases();
366 jint nphases = 0;
367 for ( ; phases[nphases] != NULL; ++nphases) ;
368
369 ResourceMark rm(thread);
370 ThreadToNativeFromVM ttn(thread);
371 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
372 CHECK_JNI_EXCEPTION_(env, NULL);
373
374 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
375 CHECK_JNI_EXCEPTION_(env, NULL);
376
377 // If push fails, return with pending exception.
378 if (env->PushLocalFrame(nphases) < 0) return NULL;
379 for (jint i = 0; i < nphases; ++i) {
380 jstring phase = env->NewStringUTF(phases[i]);
381 CHECK_JNI_EXCEPTION_(env, NULL);
382 env->SetObjectArrayElement(result, i, phase);
383 CHECK_JNI_EXCEPTION_(env, NULL);
384 }
385 env->PopLocalFrame(NULL);
386
387 return result;
388 WB_END
389
390 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
391 Handle h_name(THREAD, JNIHandles::resolve(name));
392 ResourceMark rm;
393 const char* c_name = java_lang_String::as_utf8_string(h_name());
394 return Universe::heap()->request_concurrent_phase(c_name);
395 WB_END
396
397 #if INCLUDE_ALL_GCS
398 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
399 if (UseG1GC) {
400 G1CollectedHeap* g1 = G1CollectedHeap::heap();
401 oop result = JNIHandles::resolve(obj);
402 const HeapRegion* hr = g1->heap_region_containing(result);
403 return hr->is_humongous();
404 }
405 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
406 WB_END
407
408 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
409 if (UseG1GC) {
410 G1CollectedHeap* g1 = G1CollectedHeap::heap();
411 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
412 return hr->is_humongous();
413 }
414 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
415 WB_END
416
417 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
418 if (UseG1GC) {
419 G1CollectedHeap* g1 = G1CollectedHeap::heap();
420 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
421 return hr->is_free();
422 }
423 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
424 WB_END
425
426 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
427 if (UseG1GC) {
428 G1CollectedHeap* g1 = G1CollectedHeap::heap();
429 size_t nr = g1->max_regions();
430 return (jlong)nr;
431 }
432 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
433 WB_END
434
435 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
436 if (UseG1GC) {
437 G1CollectedHeap* g1 = G1CollectedHeap::heap();
438 size_t nr = g1->num_free_regions();
439 return (jlong)nr;
440 }
441 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
442 WB_END
443
444 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
445 if (UseG1GC) {
446 G1CollectedHeap* g1h = G1CollectedHeap::heap();
447 return g1h->concurrent_mark()->cmThread()->during_cycle();
448 }
449 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
450 WB_END
451
452 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
453 if (UseG1GC) {
454 G1CollectedHeap* g1h = G1CollectedHeap::heap();
455 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
456 g1h->collect(GCCause::_wb_conc_mark);
457 return true;
458 }
459 return false;
460 }
461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
462 WB_END
463
464 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
465 if (UseG1GC) {
466 return (jint)HeapRegion::GrainBytes;
467 }
468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
469 WB_END
470
471 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
472 #if INCLUDE_ALL_GCS
473 if (UseParallelGC) {
474 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
475 }
476 #endif // INCLUDE_ALL_GCS
477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
478 WB_END
479
480 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
481 #if INCLUDE_ALL_GCS
482 if (UseParallelGC) {
483 return ParallelScavengeHeap::heap()->generation_alignment();
484 }
485 #endif // INCLUDE_ALL_GCS
486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
487 WB_END
488
489 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
490 #if INCLUDE_ALL_GCS
491 if (UseG1GC) {
492 ResourceMark rm(THREAD);
493 G1CollectedHeap* g1h = G1CollectedHeap::heap();
494 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
495 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
496 return JNIHandles::make_local(env, h());
497 }
498 #endif // INCLUDE_ALL_GCS
499 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
500 WB_END
501
502 class OldRegionsLivenessClosure: public HeapRegionClosure {
503
504 private:
505 const int _liveness;
506 size_t _total_count;
507 size_t _total_memory;
508 size_t _total_memory_to_free;
509
510 public:
511 OldRegionsLivenessClosure(int liveness) :
512 _liveness(liveness),
513 _total_count(0),
514 _total_memory(0),
515 _total_memory_to_free(0) { }
516
517 size_t total_count() { return _total_count; }
518 size_t total_memory() { return _total_memory; }
519 size_t total_memory_to_free() { return _total_memory_to_free; }
520
521 bool doHeapRegion(HeapRegion* r) {
522 if (r->is_old()) {
523 size_t prev_live = r->marked_bytes();
524 size_t live = r->live_bytes();
525 size_t size = r->used();
526 size_t reg_size = HeapRegion::GrainBytes;
527 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
528 _total_memory += size;
529 ++_total_count;
530 if (size == reg_size) {
531 // we don't include non-full regions since they are unlikely included in mixed gc
532 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
533 _total_memory_to_free += size - prev_live;
534 }
535 }
536 }
537 return false;
538 }
539 };
540
541
542 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
543 if (!UseG1GC) {
544 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
545 }
546 if (liveness < 0) {
547 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
548 }
549
550 G1CollectedHeap* g1h = G1CollectedHeap::heap();
551 OldRegionsLivenessClosure rli(liveness);
552 g1h->heap_region_iterate(&rli);
553
554 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
555 result->long_at_put(0, rli.total_count());
556 result->long_at_put(1, rli.total_memory());
557 result->long_at_put(2, rli.total_memory_to_free());
558 return (jlongArray) JNIHandles::make_local(env, result);
559 WB_END
560
561 #endif // INCLUDE_ALL_GCS
562
563 #if INCLUDE_NMT
564 // Alloc memory using the test memory type so that we can use that to see if
565 // NMT picks it up correctly
566 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
567 jlong addr = 0;
568 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
569 return addr;
570 WB_END
571
572 // Alloc memory with pseudo call stack. The test can create psudo malloc
573 // allocation site to stress the malloc tracking.
574 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
575 address pc = (address)(size_t)pseudo_stack;
576 NativeCallStack stack(&pc, 1);
577 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
578 WB_END
579
580 // Free the memory allocated by NMTAllocTest
581 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
582 os::free((void*)(uintptr_t)mem);
583 WB_END
584
585 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
586 jlong addr = 0;
587
588 addr = (jlong)(uintptr_t)os::reserve_memory(size);
589 MemTracker::record_virtual_memory_type((address)addr, mtTest);
590
591 return addr;
592 WB_END
593
594 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
595 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
596 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
597 WB_END
598
599 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
600 os::uncommit_memory((char *)(uintptr_t)addr, size);
601 WB_END
602
603 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
604 os::release_memory((char *)(uintptr_t)addr, size);
605 WB_END
606
607 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
608 // Test that we can downgrade NMT levels but not upgrade them.
609 if (MemTracker::tracking_level() == NMT_off) {
610 MemTracker::transition_to(NMT_off);
611 return MemTracker::tracking_level() == NMT_off;
612 } else {
613 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
614 MemTracker::transition_to(NMT_summary);
615 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
616
617 // Can't go to detail once NMT is set to summary.
618 MemTracker::transition_to(NMT_detail);
619 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
620
621 // Shutdown sets tracking level to minimal.
622 MemTracker::shutdown();
623 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
624
625 // Once the tracking level is minimal, we cannot increase to summary.
626 // The code ignores this request instead of asserting because if the malloc site
627 // table overflows in another thread, it tries to change the code to summary.
628 MemTracker::transition_to(NMT_summary);
629 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
630
631 // Really can never go up to detail, verify that the code would never do this.
632 MemTracker::transition_to(NMT_detail);
633 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
634 return MemTracker::tracking_level() == NMT_minimal;
635 }
636 WB_END
637
638 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
639 int hash_size = MallocSiteTable::hash_buckets();
640 assert(hash_size > 0, "NMT hash_size should be > 0");
641 return (jint)hash_size;
642 WB_END
643 #endif // INCLUDE_NMT
644
645 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
646 assert(method != NULL, "method should not be null");
647 ThreadToNativeFromVM ttn(thread);
648 return env->FromReflectedMethod(method);
649 }
650
651 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
652 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
653 private:
654 int _result;
655 const bool _make_not_entrant;
656 public:
657 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
658 _result(0), _make_not_entrant(make_not_entrant) { }
659 int result() const { return _result; }
660
661 void doit() {
662 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
663 if (t->has_last_Java_frame()) {
664 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
665 frame* f = fst.current();
666 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
667 RegisterMap* reg_map = fst.register_map();
668 Deoptimization::deoptimize(t, *f, reg_map);
669 if (_make_not_entrant) {
670 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
671 assert(cm != NULL, "sanity check");
672 cm->make_not_entrant();
673 }
674 ++_result;
675 }
676 }
677 }
678 }
679 }
680 };
681
682 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
683 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
684 VMThread::execute(&op);
685 return op.result();
686 WB_END
687
688 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
689 MutexLockerEx mu(Compile_lock);
690 CodeCache::mark_all_nmethods_for_deoptimization();
691 VM_Deoptimize op;
692 VMThread::execute(&op);
693 WB_END
694
695 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
696 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
697 int result = 0;
698 CHECK_JNI_EXCEPTION_(env, result);
699 MutexLockerEx mu(Compile_lock);
700 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
701 if (is_osr) {
702 result += mh->mark_osr_nmethods();
703 } else if (mh->code() != NULL) {
704 mh->code()->mark_for_deoptimization();
705 ++result;
706 }
707 result += CodeCache::mark_for_deoptimization(mh());
708 if (result > 0) {
709 VM_Deoptimize op;
710 VMThread::execute(&op);
711 }
712 return result;
713 WB_END
714
715 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
716 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
717 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
718 MutexLockerEx mu(Compile_lock);
719 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
720 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
721 if (code == NULL) {
722 return JNI_FALSE;
723 }
724 return (code->is_alive() && !code->is_marked_for_deoptimization());
725 WB_END
726
727 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
728 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
729 return false;
730 }
731 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
732 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
733 MutexLockerEx mu(Compile_lock);
734 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
735 if (is_osr) {
736 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
737 } else {
738 return CompilationPolicy::can_be_compiled(mh, comp_level);
739 }
740 WB_END
741
742 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
743 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
744 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
745 MutexLockerEx mu(Compile_lock);
746 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
747 return mh->queued_for_compilation();
748 WB_END
749
750 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
751 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
752 return false; // Intrinsic is not available on a non-existent compilation level.
753 }
754 jmethodID method_id, compilation_context_id;
755 method_id = reflected_method_to_jmid(thread, env, method);
756 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
757 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
758
759 DirectiveSet* directive;
760 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
761 assert(comp != NULL, "compiler not available");
762 if (compilation_context != NULL) {
763 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
764 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
765 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
766 directive = DirectivesStack::getMatchingDirective(cch, comp);
767 } else {
768 // Calling with NULL matches default directive
769 directive = DirectivesStack::getDefaultDirective(comp);
770 }
771 bool result = comp->is_intrinsic_available(mh, directive);
772 DirectivesStack::release(directive);
773 return result;
774 WB_END
775
776 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
777 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
778 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
779 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
780 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
781 return (code != NULL ? code->comp_level() : CompLevel_none);
782 WB_END
783
784 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
785 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
786 CHECK_JNI_EXCEPTION(env);
787 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
788 if (is_osr) {
789 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
790 } else {
791 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
792 }
793 WB_END
794
795 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
796 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
797 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
798 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
799 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
800 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
801 WB_END
802
803 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
804 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
805 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
806 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
807 bool result = mh->dont_inline();
808 mh->set_dont_inline(value == JNI_TRUE);
809 return result;
810 WB_END
811
812 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
813 if (comp_level == CompLevel_any) {
814 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
815 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
816 } else {
817 return CompileBroker::queue_size(comp_level);
818 }
819 WB_END
820
821 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
822 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
823 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
825 bool result = mh->force_inline();
826 mh->set_force_inline(value == JNI_TRUE);
827 return result;
828 WB_END
829
830 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
831 // Screen for unavailable/bad comp level or null method
832 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) ||
833 CompileBroker::compiler(comp_level) == NULL) {
834 return false;
835 }
836 methodHandle mh(THREAD, method);
837 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
838 MutexLockerEx mu(Compile_lock);
839 return (mh->queued_for_compilation() || nm != NULL);
840 }
841
842 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
843 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
844 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
845 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
846 WB_END
847
848 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
849 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
850 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
851 WB_END
852
853 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
854 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
855 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
856
857 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
858 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
859 bool result = directive->PrintAssemblyOption;
860 DirectivesStack::release(directive);
861
862 return result;
863 WB_END
864
865 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
866 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
867 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
868
869 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
870
871 ResourceMark rm;
872 const char* error_msg = NULL;
873 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
874 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
875
876 if (m == NULL) {
877 assert(error_msg != NULL, "Always have an error message");
878 tty->print_cr("Got error: %s", error_msg);
879 return -1; // Pattern failed
880 }
881
882 // Pattern works - now check if it matches
883 int result;
884 if (m->match(mh, InlineMatcher::force_inline)) {
885 result = 2; // Force inline match
886 } else if (m->match(mh, InlineMatcher::dont_inline)) {
887 result = 1; // Dont inline match
888 } else {
889 result = 0; // No match
890 }
891 delete m;
892 return result;
893 WB_END
894
895 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
896 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
898
899 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
900
901 ResourceMark rm;
902 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
903
904 const char* error_msg = NULL;
905
906 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
907 if (m == NULL) {
908 assert(error_msg != NULL, "Must have error_msg");
909 tty->print_cr("Got error: %s", error_msg);
910 return -1;
911 }
912
913 // Pattern works - now check if it matches
914 int result = m->matches(mh);
915 delete m;
916 assert(result == 0 || result == 1, "Result out of range");
917 return result;
918 WB_END
919
920 static AlwaysFalseClosure always_false;
921
922 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
923 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
924 CHECK_JNI_EXCEPTION(env);
925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
926 MutexLockerEx mu(Compile_lock);
927 MethodData* mdo = mh->method_data();
928 MethodCounters* mcs = mh->method_counters();
929
930 if (mdo != NULL) {
931 mdo->init();
932 ResourceMark rm;
933 int arg_count = mdo->method()->size_of_parameters();
934 for (int i = 0; i < arg_count; i++) {
935 mdo->set_arg_modified(i, 0);
936 }
937 MutexLockerEx mu(mdo->extra_data_lock());
938 mdo->clean_method_data(&always_false);
939 }
940
941 mh->clear_not_c1_compilable();
942 mh->clear_not_c2_compilable();
943 mh->clear_not_c2_osr_compilable();
944 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
945 if (mcs != NULL) {
946 mcs->backedge_counter()->init();
947 mcs->invocation_counter()->init();
948 mcs->set_interpreter_invocation_count(0);
949 mcs->set_interpreter_throwout_count(0);
950
951 #ifdef TIERED
952 mcs->set_rate(0.0F);
953 mh->set_prev_event_count(0);
954 mh->set_prev_time(0);
955 #endif
956 }
957 WB_END
958
959 template <typename T>
960 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
961 if (name == NULL) {
962 return false;
963 }
964 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
965 const char* flag_name = env->GetStringUTFChars(name, NULL);
966 CHECK_JNI_EXCEPTION_(env, false);
967 Flag::Error result = (*TAt)(flag_name, value, true, true);
968 env->ReleaseStringUTFChars(name, flag_name);
969 return (result == Flag::SUCCESS);
970 }
971
972 template <typename T>
973 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
974 if (name == NULL) {
975 return false;
976 }
977 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
978 const char* flag_name = env->GetStringUTFChars(name, NULL);
979 CHECK_JNI_EXCEPTION_(env, false);
980 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
981 env->ReleaseStringUTFChars(name, flag_name);
982 return (result == Flag::SUCCESS);
983 }
984
985 template <typename T>
986 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
987 ResourceMark rm(thread);
988 jclass clazz = env->FindClass(name->as_C_string());
989 CHECK_JNI_EXCEPTION_(env, NULL);
990 jmethodID methodID = env->GetStaticMethodID(clazz,
991 vmSymbols::valueOf_name()->as_C_string(),
992 sig->as_C_string());
993 CHECK_JNI_EXCEPTION_(env, NULL);
994 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
995 CHECK_JNI_EXCEPTION_(env, NULL);
996 return result;
997 }
998
999 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1000 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1001 }
1002 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1003 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1004 }
1005 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1006 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1007 }
1008 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1009 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1010 }*/
1011 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1012 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1013 }
1014
1015 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1016 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1017 const char* flag_name = env->GetStringUTFChars(name, NULL);
1018 CHECK_JNI_EXCEPTION_(env, NULL);
1019 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1020 env->ReleaseStringUTFChars(name, flag_name);
1021 return result;
1022 }
1023
1024 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1025 Flag* flag = getVMFlag(thread, env, name);
1026 return (flag != NULL) && flag->is_constant_in_binary();
1027 WB_END
1028
1029 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1030 Flag* flag = getVMFlag(thread, env, name);
1031 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1032 WB_END
1033
1034 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1035 bool result;
1036 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1037 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1038 return booleanBox(thread, env, result);
1039 }
1040 return NULL;
1041 WB_END
1042
1043 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1044 int result;
1045 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1046 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1047 return longBox(thread, env, result);
1048 }
1049 return NULL;
1050 WB_END
1051
1052 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1053 uint result;
1054 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1055 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1056 return longBox(thread, env, result);
1057 }
1058 return NULL;
1059 WB_END
1060
1061 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1062 intx result;
1063 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1064 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1065 return longBox(thread, env, result);
1066 }
1067 return NULL;
1068 WB_END
1069
1070 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1071 uintx result;
1072 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1073 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1074 return longBox(thread, env, result);
1075 }
1076 return NULL;
1077 WB_END
1078
1079 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1080 uint64_t result;
1081 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1082 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1083 return longBox(thread, env, result);
1084 }
1085 return NULL;
1086 WB_END
1087
1088 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1089 uintx result;
1090 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1091 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1092 return longBox(thread, env, result);
1093 }
1094 return NULL;
1095 WB_END
1096
1097 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1098 double result;
1099 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1100 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1101 return doubleBox(thread, env, result);
1102 }
1103 return NULL;
1104 WB_END
1105
1106 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1107 ccstr ccstrResult;
1108 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1109 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1110 jstring result = env->NewStringUTF(ccstrResult);
1111 CHECK_JNI_EXCEPTION_(env, NULL);
1112 return result;
1113 }
1114 return NULL;
1115 WB_END
1116
1117 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1118 bool result = value == JNI_TRUE ? true : false;
1119 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1120 WB_END
1121
1122 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1123 int result = value;
1124 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1125 WB_END
1126
1127 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1128 uint result = value;
1129 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1130 WB_END
1131
1132 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1133 intx result = value;
1134 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1135 WB_END
1136
1137 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1138 uintx result = value;
1139 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1140 WB_END
1141
1142 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1143 uint64_t result = value;
1144 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1145 WB_END
1146
1147 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1148 size_t result = value;
1149 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1150 WB_END
1151
1152 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1153 double result = value;
1154 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1155 WB_END
1156
1157 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1158 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1159 const char* ccstrValue;
1160 if (value == NULL) {
1161 ccstrValue = NULL;
1162 }
1163 else {
1164 ccstrValue = env->GetStringUTFChars(value, NULL);
1165 CHECK_JNI_EXCEPTION(env);
1166 }
1167 ccstr ccstrResult = ccstrValue;
1168 bool needFree;
1169 {
1170 ThreadInVMfromNative ttvfn(thread); // back to VM
1171 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1172 }
1173 if (value != NULL) {
1174 env->ReleaseStringUTFChars(value, ccstrValue);
1175 }
1176 if (needFree) {
1177 FREE_C_HEAP_ARRAY(char, ccstrResult);
1178 }
1179 WB_END
1180
1181 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1182 WhiteBox::compilation_locked = true;
1183 WB_END
1184
1185 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1186 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1187 WhiteBox::compilation_locked = false;
1188 mo.notify_all();
1189 WB_END
1190
1191 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1192 // Force a code cache sweep and block until it finished
1193 NMethodSweeper::force_sweep();
1194 WB_END
1195
1196 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1197 ResourceMark rm(THREAD);
1198 int len;
1199 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1200 return (StringTable::lookup(name, len) != NULL);
1201 WB_END
1202
1203 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1204 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
1205 Universe::heap()->collect(GCCause::_wb_full_gc);
1206 #if INCLUDE_ALL_GCS
1207 if (UseG1GC) {
1208 // Needs to be cleared explicitly for G1
1209 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
1210 }
1211 #endif // INCLUDE_ALL_GCS
1212 WB_END
1213
1214 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1215 Universe::heap()->collect(GCCause::_wb_young_gc);
1216 WB_END
1217
1218 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1219 // static+volatile in order to force the read to happen
1220 // (not be eliminated by the compiler)
1221 static char c;
1222 static volatile char* p;
1223
1224 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1225 if (p == NULL) {
1226 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1227 }
1228
1229 c = *p;
1230 WB_END
1231
1232 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1233 const char* features = VM_Version::features_string();
1234 ThreadToNativeFromVM ttn(thread);
1235 jstring features_string = env->NewStringUTF(features);
1236
1237 CHECK_JNI_EXCEPTION_(env, NULL);
1238
1239 return features_string;
1240 WB_END
1241
1242 int WhiteBox::get_blob_type(const CodeBlob* code) {
1243 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1244 if (code->is_aot()) {
1245 return -1;
1246 }
1247 return CodeCache::get_code_heap(code)->code_blob_type();
1248 }
1249
1250 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1251 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1252 return CodeCache::get_code_heap(blob_type);
1253 }
1254
1255 struct CodeBlobStub {
1256 CodeBlobStub(const CodeBlob* blob) :
1257 name(os::strdup(blob->name())),
1258 size(blob->size()),
1259 blob_type(WhiteBox::get_blob_type(blob)),
1260 address((jlong) blob) { }
1261 ~CodeBlobStub() { os::free((void*) name); }
1262 const char* const name;
1263 const jint size;
1264 const jint blob_type;
1265 const jlong address;
1266 };
1267
1268 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1269 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1270 CHECK_JNI_EXCEPTION_(env, NULL);
1271 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1272
1273 jstring name = env->NewStringUTF(cb->name);
1274 CHECK_JNI_EXCEPTION_(env, NULL);
1275 env->SetObjectArrayElement(result, 0, name);
1276
1277 jobject obj = integerBox(thread, env, cb->size);
1278 CHECK_JNI_EXCEPTION_(env, NULL);
1279 env->SetObjectArrayElement(result, 1, obj);
1280
1281 obj = integerBox(thread, env, cb->blob_type);
1282 CHECK_JNI_EXCEPTION_(env, NULL);
1283 env->SetObjectArrayElement(result, 2, obj);
1284
1285 obj = longBox(thread, env, cb->address);
1286 CHECK_JNI_EXCEPTION_(env, NULL);
1287 env->SetObjectArrayElement(result, 3, obj);
1288
1289 return result;
1290 }
1291
1292 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1293 ResourceMark rm(THREAD);
1294 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1295 CHECK_JNI_EXCEPTION_(env, NULL);
1296 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1297 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1298 jobjectArray result = NULL;
1299 if (code == NULL) {
1300 return result;
1301 }
1302 int comp_level = code->comp_level();
1303 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1304
1305 ThreadToNativeFromVM ttn(thread);
1306 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1307 CHECK_JNI_EXCEPTION_(env, NULL);
1308 result = env->NewObjectArray(5, clazz, NULL);
1309 if (result == NULL) {
1310 return result;
1311 }
1312
1313 CodeBlobStub stub(code);
1314 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1315 CHECK_JNI_EXCEPTION_(env, NULL);
1316 env->SetObjectArrayElement(result, 0, codeBlob);
1317
1318 jobject level = integerBox(thread, env, comp_level);
1319 CHECK_JNI_EXCEPTION_(env, NULL);
1320 env->SetObjectArrayElement(result, 1, level);
1321
1322 jbyteArray insts = env->NewByteArray(insts_size);
1323 CHECK_JNI_EXCEPTION_(env, NULL);
1324 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1325 env->SetObjectArrayElement(result, 2, insts);
1326
1327 jobject id = integerBox(thread, env, code->compile_id());
1328 CHECK_JNI_EXCEPTION_(env, NULL);
1329 env->SetObjectArrayElement(result, 3, id);
1330
1331 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1332 CHECK_JNI_EXCEPTION_(env, NULL);
1333 env->SetObjectArrayElement(result, 4, entry_point);
1334
1335 return result;
1336 WB_END
1337
1338 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1339 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1340 BufferBlob* blob;
1341 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1342 if (full_size < size) {
1343 full_size += round_to(size - full_size, oopSize);
1344 }
1345 {
1346 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1347 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1348 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1349 }
1350 // Track memory usage statistic after releasing CodeCache_lock
1351 MemoryService::track_code_cache_memory_usage();
1352 return blob;
1353 }
1354
1355 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1356 if (size < 0) {
1357 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1358 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1359 }
1360 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1361 WB_END
1362
1363 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1364 if (addr == 0) {
1365 return;
1366 }
1367 BufferBlob::free((BufferBlob*) addr);
1368 WB_END
1369
1370 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1371 ResourceMark rm;
1372 GrowableArray<CodeBlobStub*> blobs;
1373 {
1374 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1375 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1376 if (heap == NULL) {
1377 return NULL;
1378 }
1379 for (CodeBlob* cb = (CodeBlob*) heap->first();
1380 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1381 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1382 new (stub) CodeBlobStub(cb);
1383 blobs.append(stub);
1384 }
1385 }
1386 if (blobs.length() == 0) {
1387 return NULL;
1388 }
1389 ThreadToNativeFromVM ttn(thread);
1390 jobjectArray result = NULL;
1391 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1392 CHECK_JNI_EXCEPTION_(env, NULL);
1393 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1394 CHECK_JNI_EXCEPTION_(env, NULL);
1395 if (result == NULL) {
1396 return result;
1397 }
1398 int i = 0;
1399 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1400 it != blobs.end(); ++it) {
1401 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1402 CHECK_JNI_EXCEPTION_(env, NULL);
1403 env->SetObjectArrayElement(result, i, obj);
1404 CHECK_JNI_EXCEPTION_(env, NULL);
1405 ++i;
1406 }
1407 return result;
1408 WB_END
1409
1410 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1411 return CompileBroker::get_compilation_activity_mode();
1412 WB_END
1413
1414 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1415 if (addr == 0) {
1416 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1417 "WB_GetCodeBlob: addr is null");
1418 }
1419 ThreadToNativeFromVM ttn(thread);
1420 CodeBlobStub stub((CodeBlob*) addr);
1421 return codeBlob2objectArray(thread, env, &stub);
1422 WB_END
1423
1424 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1425 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1426 CHECK_JNI_EXCEPTION_(env, 0);
1427 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1428 return (jlong) mh->method_data();
1429 WB_END
1430
1431 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1432 return (jlong) Thread::current()->stack_size();
1433 WB_END
1434
1435 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1436 JavaThread* t = JavaThread::current();
1437 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1438 WB_END
1439
1440
1441 int WhiteBox::array_bytes_to_length(size_t bytes) {
1442 return Array<u1>::bytes_to_length(bytes);
1443 }
1444
1445 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1446 if (size < 0) {
1447 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1448 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1449 }
1450
1451 oop class_loader_oop = JNIHandles::resolve(class_loader);
1452 ClassLoaderData* cld = class_loader_oop != NULL
1453 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1454 : ClassLoaderData::the_null_class_loader_data();
1455
1456 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1457
1458 return (jlong)(uintptr_t)metadata;
1459 WB_END
1460
1461 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1462 oop class_loader_oop = JNIHandles::resolve(class_loader);
1463 ClassLoaderData* cld = class_loader_oop != NULL
1464 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1465 : ClassLoaderData::the_null_class_loader_data();
1466
1467 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1468 WB_END
1469
1470 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1471 jstring version, jstring location, jobjectArray packages))
1472 ResourceMark rm(THREAD);
1473
1474 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1475 objArrayHandle packages_h(THREAD, packages_oop);
1476 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1477
1478 char** pkgs = NULL;
1479 if (num_packages > 0) {
1480 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1481 for (int x = 0; x < num_packages; x++) {
1482 oop pkg_str = packages_h->obj_at(x);
1483 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1484 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1485 err_msg("Bad package name"));
1486 }
1487 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1488 }
1489 }
1490 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1491 WB_END
1492
1493 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1494 ResourceMark rm(THREAD);
1495 char* package_name = NULL;
1496 if (package != NULL) {
1497 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1498 }
1499 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1500 WB_END
1501
1502 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1503 ResourceMark rm(THREAD);
1504 char* package_name = NULL;
1505 if (package != NULL) {
1506 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1507 }
1508 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1509 WB_END
1510
1511 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1512 ResourceMark rm(THREAD);
1513 char* package_name = NULL;
1514 if (package != NULL) {
1515 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1516 }
1517 Modules::add_module_exports(module, package_name, NULL, CHECK);
1518 WB_END
1519
1520 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1521 Modules::add_reads_module(from_module, source_module, CHECK);
1522 WB_END
1523
1524 WB_ENTRY(void, WB_AddModulePackage(JNIEnv* env, jobject o, jclass module, jstring package))
1525 ResourceMark rm(THREAD);
1526 char* package_name = NULL;
1527 if (package != NULL) {
1528 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1529 }
1530 Modules::add_module_package(module, package_name, CHECK);
1531 WB_END
1532
1533 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1534 if (inc < 0) {
1535 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1536 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1537 }
1538
1539 jlong max_size_t = (jlong) ((size_t) -1);
1540 if (inc > max_size_t) {
1541 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1542 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1543 }
1544
1545 size_t new_cap_until_GC = 0;
1546 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1547 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1548 if (!success) {
1549 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1550 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1551 "due to contention with another thread");
1552 }
1553 return (jlong) new_cap_until_GC;
1554 WB_END
1555
1556 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1557 return (jlong) MetaspaceGC::capacity_until_GC();
1558 WB_END
1559
1560 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1561 return MetaspaceGC::should_concurrent_collect();
1562 WB_END
1563
1564
1565 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1566 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1567 Monitor::_safepoint_check_always :
1568 Monitor::_safepoint_check_never;
1569 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1570 attemptedNoSafepointValue == JNI_TRUE);
1571 WB_END
1572
1573 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1574 oop obj_oop = JNIHandles::resolve(obj);
1575 return (jboolean) obj_oop->mark()->has_monitor();
1576 WB_END
1577
1578 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1579 VM_ForceSafepoint force_safepoint_op;
1580 VMThread::execute(&force_safepoint_op);
1581 WB_END
1582
1583 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1584 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1585 return (jlong) ik->constants();
1586 WB_END
1587
1588 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1589 return ConstantPool::CPCACHE_INDEX_TAG;
1590 WB_END
1591
1592 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1593 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1594 ConstantPool* cp = ik->constants();
1595 if (cp->cache() == NULL) {
1596 return -1;
1597 }
1598 return cp->cache()->length();
1599 WB_END
1600
1601 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1602 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1603 ConstantPool* cp = ik->constants();
1604 if (cp->cache() == NULL) {
1605 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1606 }
1607 jint cpci = index;
1608 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1609 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1610 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1611 }
1612 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1613 return cpi;
1614 WB_END
1615
1616 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1617 return ConstantPool::encode_invokedynamic_index(index);
1618 WB_END
1619
1620 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1621 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1622 VMThread::execute(&clear_ics);
1623 WB_END
1624
1625 template <typename T>
1626 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1627 assert(value != NULL, "sanity");
1628 if (method == NULL || name == NULL) {
1629 return false;
1630 }
1631 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1632 CHECK_JNI_EXCEPTION_(env, false);
1633 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1634 // can't be in VM when we call JNI
1635 ThreadToNativeFromVM ttnfv(thread);
1636 const char* flag_name = env->GetStringUTFChars(name, NULL);
1637 CHECK_JNI_EXCEPTION_(env, false);
1638 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1639 env->ReleaseStringUTFChars(name, flag_name);
1640 return result;
1641 }
1642
1643 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1644 bool result;
1645 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1646 // can't be in VM when we call JNI
1647 ThreadToNativeFromVM ttnfv(thread);
1648 return booleanBox(thread, env, result);
1649 }
1650 return NULL;
1651 WB_END
1652
1653 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1654 intx result;
1655 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1656 // can't be in VM when we call JNI
1657 ThreadToNativeFromVM ttnfv(thread);
1658 return longBox(thread, env, result);
1659 }
1660 return NULL;
1661 WB_END
1662
1663 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1664 uintx result;
1665 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1666 // can't be in VM when we call JNI
1667 ThreadToNativeFromVM ttnfv(thread);
1668 return longBox(thread, env, result);
1669 }
1670 return NULL;
1671 WB_END
1672
1673 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1674 double result;
1675 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1676 // can't be in VM when we call JNI
1677 ThreadToNativeFromVM ttnfv(thread);
1678 return doubleBox(thread, env, result);
1679 }
1680 return NULL;
1681 WB_END
1682
1683 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1684 ccstr ccstrResult;
1685 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1686 // can't be in VM when we call JNI
1687 ThreadToNativeFromVM ttnfv(thread);
1688 jstring result = env->NewStringUTF(ccstrResult);
1689 CHECK_JNI_EXCEPTION_(env, NULL);
1690 return result;
1691 }
1692 return NULL;
1693 WB_END
1694
1695 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1696 oop obj_oop = JNIHandles::resolve(obj);
1697 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1698 WB_END
1699
1700 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1701 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1702 WB_END
1703
1704 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1705 return StringTable::shared_string_ignored();
1706 WB_END
1707
1708 //Some convenience methods to deal with objects from java
1709 int WhiteBox::offset_for_field(const char* field_name, oop object,
1710 Symbol* signature_symbol) {
1711 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1712 Thread* THREAD = Thread::current();
1713
1714 //Get the class of our object
1715 Klass* arg_klass = object->klass();
1716 //Turn it into an instance-klass
1717 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1718
1719 //Create symbols to look for in the class
1720 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1721 THREAD);
1722
1723 //To be filled in with an offset of the field we're looking for
1724 fieldDescriptor fd;
1725
1726 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1727 if (res == NULL) {
1728 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1729 name_symbol->as_C_string());
1730 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1731 }
1732
1733 //fetch the field at the offset we've found
1734 int dest_offset = fd.offset();
1735
1736 return dest_offset;
1737 }
1738
1739
1740 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1741 int offset = offset_for_field(field_name, object,
1742 vmSymbols::string_signature());
1743 oop string = object->obj_field(offset);
1744 if (string == NULL) {
1745 return NULL;
1746 }
1747 const char* ret = java_lang_String::as_utf8_string(string);
1748 return ret;
1749 }
1750
1751 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1752 int offset =
1753 offset_for_field(field_name, object, vmSymbols::bool_signature());
1754 bool ret = (object->bool_field(offset) == JNI_TRUE);
1755 return ret;
1756 }
1757
1758 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1759 ResourceMark rm;
1760 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1761
1762 // one by one registration natives for exception catching
1763 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1764 CHECK_JNI_EXCEPTION(env);
1765 for (int i = 0, n = method_count; i < n; ++i) {
1766 // Skip dummy entries
1767 if (method_array[i].fnPtr == NULL) continue;
1768 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1769 jthrowable throwable_obj = env->ExceptionOccurred();
1770 if (throwable_obj != NULL) {
1771 env->ExceptionClear();
1772 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1773 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1774 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1775 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1776 method_array[i].name, method_array[i].signature);
1777 }
1778 } else {
1779 // Registration failed unexpectedly.
1780 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1781 method_array[i].name, method_array[i].signature);
1782 env->UnregisterNatives(wbclass);
1783 break;
1784 }
1785 }
1786 }
1787 }
1788
1789 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1790 // can't be in VM when we call JNI
1791 ThreadToNativeFromVM ttnfv(thread);
1792 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1793 CHECK_JNI_EXCEPTION_(env, 0);
1794 int ret;
1795 {
1796 ThreadInVMfromNative ttvfn(thread); // back to VM
1797 ret = DirectivesParser::parse_string(dir, tty);
1798 }
1799 env->ReleaseStringUTFChars(compDirect, dir);
1800 // -1 for error parsing directive. Return 0 as number of directives added.
1801 if (ret == -1) {
1802 ret = 0;
1803 }
1804 return (jint) ret;
1805 WB_END
1806
1807 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1808 DirectivesStack::pop(count);
1809 WB_END
1810
1811 #define CC (char*)
1812
1813 static JNINativeMethod methods[] = {
1814 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1815 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1816 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1817 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1818 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1819 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1820 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1821 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1822 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1823 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1824 {CC"parseCommandLine0",
1825 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1826 (void*) &WB_ParseCommandLine
1827 },
1828 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1829 (void*)&WB_AddToBootstrapClassLoaderSearch},
1830 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1831 (void*)&WB_AddToSystemClassLoaderSearch},
1832 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1833 (void*)&WB_GetCompressedOopsMaxHeapSize},
1834 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1835 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1836 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1837 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1838 #if INCLUDE_ALL_GCS
1839 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1840 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1841 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1842 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1843 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1844 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1845 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1846 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1847 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1848 (void*)&WB_G1AuxiliaryMemoryUsage },
1849 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1850 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1851 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1852 #endif // INCLUDE_ALL_GCS
1853 #if INCLUDE_NMT
1854 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1855 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1856 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1857 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1858 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1859 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1860 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1861 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1862 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1863 #endif // INCLUDE_NMT
1864 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1865 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1866 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1867 (void*)&WB_DeoptimizeMethod },
1868 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1869 (void*)&WB_IsMethodCompiled },
1870 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1871 (void*)&WB_IsMethodCompilable},
1872 {CC"isMethodQueuedForCompilation0",
1873 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1874 {CC"isIntrinsicAvailable0",
1875 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1876 (void*)&WB_IsIntrinsicAvailable},
1877 {CC"makeMethodNotCompilable0",
1878 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1879 {CC"testSetDontInlineMethod0",
1880 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1881 {CC"getMethodCompilationLevel0",
1882 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1883 {CC"getMethodEntryBci0",
1884 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1885 {CC"getCompileQueueSize",
1886 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1887 {CC"testSetForceInlineMethod0",
1888 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1889 {CC"enqueueMethodForCompilation0",
1890 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1891 {CC"enqueueInitializerForCompilation0",
1892 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
1893 {CC"clearMethodState0",
1894 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1895 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1896 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1897 {CC"matchesMethod",
1898 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1899 (void*)&WB_MatchesMethod},
1900 {CC"matchesInline",
1901 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1902 (void*)&WB_MatchesInline},
1903 {CC"shouldPrintAssembly",
1904 CC"(Ljava/lang/reflect/Executable;I)Z",
1905 (void*)&WB_ShouldPrintAssembly},
1906
1907 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1908 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1909 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1910 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1911 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1912 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1913 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1914 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1915 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1916 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1917 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1918 (void*)&WB_SetStringVMFlag},
1919 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1920 (void*)&WB_GetBooleanVMFlag},
1921 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1922 (void*)&WB_GetIntVMFlag},
1923 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1924 (void*)&WB_GetUintVMFlag},
1925 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1926 (void*)&WB_GetIntxVMFlag},
1927 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1928 (void*)&WB_GetUintxVMFlag},
1929 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1930 (void*)&WB_GetUint64VMFlag},
1931 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1932 (void*)&WB_GetSizeTVMFlag},
1933 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1934 (void*)&WB_GetDoubleVMFlag},
1935 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1936 (void*)&WB_GetStringVMFlag},
1937 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1938 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1939 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1940 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1941 {CC"allocateMetaspace",
1942 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1943 {CC"freeMetaspace",
1944 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1945 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1946 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1947 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
1948 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1949 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1950 (void*)&WB_GetNMethod },
1951 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1952 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1953 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1954 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1955 {CC"getCompilationActivityMode",
1956 CC"()I", (void*)&WB_GetCompilationActivityMode},
1957 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1958 (void*)&WB_GetMethodData },
1959 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1960 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1961 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1962 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
1963 (void*)&WB_DefineModule },
1964 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
1965 (void*)&WB_AddModuleExports },
1966 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
1967 (void*)&WB_AddReadsModule },
1968 {CC"AddModulePackage", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1969 (void*)&WB_AddModulePackage },
1970 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1971 (void*)&WB_AddModuleExportsToAllUnnamed },
1972 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
1973 (void*)&WB_AddModuleExportsToAll },
1974 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1975 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1976 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1977 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
1978 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
1979 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
1980 {CC"remapInstructionOperandFromCPCache0",
1981 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
1982 {CC"encodeConstantPoolIndyIndex0",
1983 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
1984 {CC"getMethodBooleanOption",
1985 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1986 (void*)&WB_GetMethodBooleaneOption},
1987 {CC"getMethodIntxOption",
1988 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1989 (void*)&WB_GetMethodIntxOption},
1990 {CC"getMethodUintxOption",
1991 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1992 (void*)&WB_GetMethodUintxOption},
1993 {CC"getMethodDoubleOption",
1994 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1995 (void*)&WB_GetMethodDoubleOption},
1996 {CC"getMethodStringOption",
1997 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1998 (void*)&WB_GetMethodStringOption},
1999 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2000 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2001 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2002 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2003 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2004 (void*)&WB_AddCompilerDirective },
2005 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2006 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2007 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2008 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2009 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2010 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2011 (void*)&WB_GetConcurrentGCPhases},
2012 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2013 (void*)&WB_RequestConcurrentGCPhase},
2014 };
2015
2016 #undef CC
2017
2018 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2019 {
2020 if (WhiteBoxAPI) {
2021 // Make sure that wbclass is loaded by the null classloader
2022 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2023 Handle loader(THREAD, ik->class_loader());
2024 if (loader.is_null()) {
2025 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2026 WhiteBox::register_extended(env, wbclass, thread);
2027 WhiteBox::set_used();
2028 }
2029 }
2030 }
2031 JVM_END