1 /*
2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/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 "gc/shared/gcConfig.hpp"
36 #include "gc/shared/genCollectedHeap.hpp"
37 #include "jvmtifiles/jvmtiEnv.hpp"
38 #include "memory/metadataFactory.hpp"
39 #include "memory/metaspaceShared.hpp"
40 #include "memory/iterator.hpp"
41 #include "memory/resourceArea.hpp"
42 #include "memory/universe.hpp"
43 #include "memory/oopFactory.hpp"
44 #include "oops/array.hpp"
45 #include "oops/constantPool.inline.hpp"
46 #include "oops/method.inline.hpp"
47 #include "oops/objArrayKlass.hpp"
48 #include "oops/objArrayOop.inline.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/typeArrayOop.inline.hpp"
51 #include "prims/wbtestmethods/parserTests.hpp"
52 #include "prims/whitebox.inline.hpp"
53 #include "runtime/arguments.hpp"
54 #include "runtime/compilationPolicy.hpp"
55 #include "runtime/deoptimization.hpp"
56 #include "runtime/frame.inline.hpp"
57 #include "runtime/handshake.hpp"
58 #include "runtime/interfaceSupport.inline.hpp"
59 #include "runtime/javaCalls.hpp"
60 #include "runtime/jniHandles.inline.hpp"
61 #include "runtime/os.hpp"
62 #include "runtime/sweeper.hpp"
63 #include "runtime/thread.hpp"
64 #include "runtime/threadSMR.hpp"
65 #include "runtime/vm_version.hpp"
66 #include "services/memoryService.hpp"
67 #include "utilities/align.hpp"
68 #include "utilities/debug.hpp"
69 #include "utilities/elfFile.hpp"
70 #include "utilities/exceptions.hpp"
71 #include "utilities/macros.hpp"
72 #if INCLUDE_CDS
73 #include "prims/cdsoffsets.hpp"
74 #endif // INCLUDE_CDS
75 #if INCLUDE_ALL_GCS
76 #include "gc/g1/g1CollectedHeap.inline.hpp"
77 #include "gc/g1/g1ConcurrentMark.hpp"
78 #include "gc/g1/g1ConcurrentMarkThread.hpp"
79 #include "gc/g1/heapRegionRemSet.hpp"
80 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
81 #include "gc/parallel/adjoiningGenerations.hpp"
82 #endif // INCLUDE_ALL_GCS
83 #if INCLUDE_NMT
84 #include "services/mallocSiteTable.hpp"
85 #include "services/memTracker.hpp"
86 #include "utilities/nativeCallStack.hpp"
87 #endif // INCLUDE_NMT
88
89 #ifdef LINUX
90 #include "osContainer_linux.hpp"
91 #endif
92
93 #define SIZE_T_MAX_VALUE ((size_t) -1)
94
95 #define CHECK_JNI_EXCEPTION_(env, value) \
96 do { \
97 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
98 if (HAS_PENDING_EXCEPTION) { \
99 return(value); \
100 } \
101 } while (0)
102
103 #define CHECK_JNI_EXCEPTION(env) \
104 do { \
105 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
106 if (HAS_PENDING_EXCEPTION) { \
107 return; \
108 } \
109 } while (0)
110
111 bool WhiteBox::_used = false;
112 volatile bool WhiteBox::compilation_locked = false;
113
114 class VM_WhiteBoxOperation : public VM_Operation {
115 public:
116 VM_WhiteBoxOperation() { }
117 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
118 bool allow_nested_vm_operations() const { return true; }
119 };
120
121
122 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
123 return (jlong)(void*)JNIHandles::resolve(obj);
124 WB_END
125
126 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
127 return heapOopSize;
128 WB_END
129
130 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
131 return os::vm_page_size();
132 WB_END
133
134 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
135 return os::vm_allocation_granularity();
136 WB_END
137
138 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
139 return os::large_page_size();
140 WB_END
141
142 class WBIsKlassAliveClosure : public KlassClosure {
143 Symbol* _name;
144 bool _found;
145 public:
146 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
147
148 void do_klass(Klass* k) {
149 if (_found) return;
150 Symbol* ksym = k->name();
151 if (ksym->fast_compare(_name) == 0) {
152 _found = true;
153 }
154 }
155
156 bool found() const {
157 return _found;
158 }
159 };
160
161 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
162 oop h_name = JNIHandles::resolve(name);
163 if (h_name == NULL) return false;
164 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
165 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
166
167 WBIsKlassAliveClosure closure(sym);
168 ClassLoaderDataGraph::classes_do(&closure);
169
170 return closure.found();
171 WB_END
172
173 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
174 #if INCLUDE_JVMTI
175 ResourceMark rm;
176 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
177 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
178 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
179 assert(err == JVMTI_ERROR_NONE, "must not fail");
180 #endif
181 }
182 WB_END
183
184 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
185 #if INCLUDE_JVMTI
186 ResourceMark rm;
187 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
188 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
189 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
190 assert(err == JVMTI_ERROR_NONE, "must not fail");
191 #endif
192 }
193 WB_END
194
195
196 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
197 return (jlong)Arguments::max_heap_for_compressed_oops();
198 }
199 WB_END
200
201 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
202 CollectorPolicy * p = Universe::heap()->collector_policy();
203 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
204 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
205 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
206 p->space_alignment(), p->heap_alignment());
207 }
208 WB_END
209
210 #ifndef PRODUCT
211 // Forward declaration
212 void TestReservedSpace_test();
213 void TestReserveMemorySpecial_test();
214 void TestVirtualSpace_test();
215 void TestMetaspaceUtils_test();
216 #endif
217
218 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
219 #ifndef PRODUCT
220 TestReservedSpace_test();
221 TestReserveMemorySpecial_test();
222 TestVirtualSpace_test();
223 TestMetaspaceUtils_test();
224 #endif
225 WB_END
226
227 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
228 size_t granularity = os::vm_allocation_granularity();
229 ReservedHeapSpace rhs(100 * granularity, granularity, false);
230 VirtualSpace vs;
231 vs.initialize(rhs, 50 * granularity);
232
233 // Check if constraints are complied
234 if (!( UseCompressedOops && rhs.base() != NULL &&
235 Universe::narrow_oop_base() != NULL &&
236 Universe::narrow_oop_use_implicit_null_checks() )) {
237 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
238 "\tUseCompressedOops is %d\n"
239 "\trhs.base() is " PTR_FORMAT "\n"
240 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
241 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
242 UseCompressedOops,
243 p2i(rhs.base()),
244 p2i(Universe::narrow_oop_base()),
245 Universe::narrow_oop_use_implicit_null_checks());
246 return;
247 }
248 tty->print_cr("Reading from no access area... ");
249 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
250 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
251 WB_END
252
253 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
254 size_t magnitude, size_t iterations) {
255 size_t granularity = os::vm_allocation_granularity();
256 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
257 VirtualSpace vs;
258 if (!vs.initialize(rhs, 0)) {
259 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
260 return 3;
261 }
262
263 int seed = os::random();
264 tty->print_cr("Random seed is %d", seed);
265 os::init_random(seed);
266
267 for (size_t i = 0; i < iterations; i++) {
268
269 // Whether we will shrink or grow
270 bool shrink = os::random() % 2L == 0;
271
272 // Get random delta to resize virtual space
273 size_t delta = (size_t)os::random() % magnitude;
274
275 // If we are about to shrink virtual space below zero, then expand instead
276 if (shrink && vs.committed_size() < delta) {
277 shrink = false;
278 }
279
280 // Resizing by delta
281 if (shrink) {
282 vs.shrink_by(delta);
283 } else {
284 // If expanding fails expand_by will silently return false
285 vs.expand_by(delta, true);
286 }
287 }
288 return 0;
289 }
290
291 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
292 jlong reserved_space_size, jlong magnitude, jlong iterations))
293 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
294 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
295 iterations);
296 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
297 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
298 return 1;
299 }
300
301 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
302 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
303 if (sizeof(size_t) < sizeof(jlong)) {
304 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
305 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
306 || iterations > size_t_max_value) {
307 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
308 return 2;
309 }
310 }
311
312 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
313 (size_t) magnitude, (size_t) iterations);
314 WB_END
315
316 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
317 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
318 WB_END
319
320 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
321 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
322 WB_END
323
324 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
325 return GCConfig::is_gc_selected_ergonomically();
326 WB_END
327
328 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
329 oop p = JNIHandles::resolve(obj);
330 #if INCLUDE_ALL_GCS
331 if (UseG1GC) {
332 G1CollectedHeap* g1 = G1CollectedHeap::heap();
333 const HeapRegion* hr = g1->heap_region_containing(p);
334 if (hr == NULL) {
335 return false;
336 }
337 return !(hr->is_young());
338 } else if (UseParallelGC) {
339 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
340 return !psh->is_in_young(p);
341 }
342 #endif // INCLUDE_ALL_GCS
343 GenCollectedHeap* gch = GenCollectedHeap::heap();
344 return !gch->is_in_young(p);
345 WB_END
346
347 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
348 oop p = JNIHandles::resolve(obj);
349 return p->size() * HeapWordSize;
350 WB_END
351
352 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
353 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
354 return (jlong)alignment;
355 WB_END
356
357 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
358 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
359 return (jlong)alignment;
360 WB_END
361
362 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
363 return Universe::heap()->supports_concurrent_phase_control();
364 WB_END
365
366 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
367 const char* const* phases = Universe::heap()->concurrent_phases();
368 jint nphases = 0;
369 for ( ; phases[nphases] != NULL; ++nphases) ;
370
371 ResourceMark rm(thread);
372 ThreadToNativeFromVM ttn(thread);
373 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
374 CHECK_JNI_EXCEPTION_(env, NULL);
375
376 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
377 CHECK_JNI_EXCEPTION_(env, NULL);
378
379 // If push fails, return with pending exception.
380 if (env->PushLocalFrame(nphases) < 0) return NULL;
381 for (jint i = 0; i < nphases; ++i) {
382 jstring phase = env->NewStringUTF(phases[i]);
383 CHECK_JNI_EXCEPTION_(env, NULL);
384 env->SetObjectArrayElement(result, i, phase);
385 CHECK_JNI_EXCEPTION_(env, NULL);
386 }
387 env->PopLocalFrame(NULL);
388
389 return result;
390 WB_END
391
392 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
393 Handle h_name(THREAD, JNIHandles::resolve(name));
394 ResourceMark rm;
395 const char* c_name = java_lang_String::as_utf8_string(h_name());
396 return Universe::heap()->request_concurrent_phase(c_name);
397 WB_END
398
399 #if INCLUDE_ALL_GCS
400 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
401 if (UseG1GC) {
402 G1CollectedHeap* g1 = G1CollectedHeap::heap();
403 oop result = JNIHandles::resolve(obj);
404 const HeapRegion* hr = g1->heap_region_containing(result);
405 return hr->is_humongous();
406 }
407 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
408 WB_END
409
410 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
411 if (UseG1GC) {
412 G1CollectedHeap* g1 = G1CollectedHeap::heap();
413 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
414 return hr->is_humongous();
415 }
416 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
417 WB_END
418
419 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
420 if (UseG1GC) {
421 G1CollectedHeap* g1 = G1CollectedHeap::heap();
422 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
423 return hr->is_free();
424 }
425 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
426 WB_END
427
428 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
429 if (UseG1GC) {
430 G1CollectedHeap* g1 = G1CollectedHeap::heap();
431 size_t nr = g1->max_regions();
432 return (jlong)nr;
433 }
434 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
435 WB_END
436
437 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
438 if (UseG1GC) {
439 G1CollectedHeap* g1 = G1CollectedHeap::heap();
440 size_t nr = g1->num_free_regions();
441 return (jlong)nr;
442 }
443 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
444 WB_END
445
446 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
447 if (UseG1GC) {
448 G1CollectedHeap* g1h = G1CollectedHeap::heap();
449 return g1h->concurrent_mark()->cm_thread()->during_cycle();
450 }
451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
452 WB_END
453
454 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
455 if (UseG1GC) {
456 G1CollectedHeap* g1h = G1CollectedHeap::heap();
457 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
458 g1h->collect(GCCause::_wb_conc_mark);
459 return true;
460 }
461 return false;
462 }
463 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
464 WB_END
465
466 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
467 if (UseG1GC) {
468 return (jint)HeapRegion::GrainBytes;
469 }
470 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
471 WB_END
472
473 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
474 #if INCLUDE_ALL_GCS
475 if (UseParallelGC) {
476 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
477 }
478 #endif // INCLUDE_ALL_GCS
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
483 #if INCLUDE_ALL_GCS
484 if (UseParallelGC) {
485 return ParallelScavengeHeap::heap()->generation_alignment();
486 }
487 #endif // INCLUDE_ALL_GCS
488 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
489 WB_END
490
491 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
492 #if INCLUDE_ALL_GCS
493 if (UseG1GC) {
494 ResourceMark rm(THREAD);
495 G1CollectedHeap* g1h = G1CollectedHeap::heap();
496 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
497 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
498 return JNIHandles::make_local(env, h());
499 }
500 #endif // INCLUDE_ALL_GCS
501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
502 WB_END
503
504 class OldRegionsLivenessClosure: public HeapRegionClosure {
505
506 private:
507 const int _liveness;
508 size_t _total_count;
509 size_t _total_memory;
510 size_t _total_memory_to_free;
511
512 public:
513 OldRegionsLivenessClosure(int liveness) :
514 _liveness(liveness),
515 _total_count(0),
516 _total_memory(0),
517 _total_memory_to_free(0) { }
518
519 size_t total_count() { return _total_count; }
520 size_t total_memory() { return _total_memory; }
521 size_t total_memory_to_free() { return _total_memory_to_free; }
522
523 bool do_heap_region(HeapRegion* r) {
524 if (r->is_old()) {
525 size_t prev_live = r->marked_bytes();
526 size_t live = r->live_bytes();
527 size_t size = r->used();
528 size_t reg_size = HeapRegion::GrainBytes;
529 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
530 _total_memory += size;
531 ++_total_count;
532 if (size == reg_size) {
533 // we don't include non-full regions since they are unlikely included in mixed gc
534 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
535 _total_memory_to_free += size - prev_live;
536 }
537 }
538 }
539 return false;
540 }
541 };
542
543
544 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
545 if (!UseG1GC) {
546 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
547 }
548 if (liveness < 0) {
549 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
550 }
551
552 G1CollectedHeap* g1h = G1CollectedHeap::heap();
553 OldRegionsLivenessClosure rli(liveness);
554 g1h->heap_region_iterate(&rli);
555
556 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
557 result->long_at_put(0, rli.total_count());
558 result->long_at_put(1, rli.total_memory());
559 result->long_at_put(2, rli.total_memory_to_free());
560 return (jlongArray) JNIHandles::make_local(env, result);
561 WB_END
562
563 #endif // INCLUDE_ALL_GCS
564
565 #if INCLUDE_NMT
566 // Alloc memory using the test memory type so that we can use that to see if
567 // NMT picks it up correctly
568 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
569 jlong addr = 0;
570 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
571 return addr;
572 WB_END
573
574 // Alloc memory with pseudo call stack. The test can create psudo malloc
575 // allocation site to stress the malloc tracking.
576 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
577 address pc = (address)(size_t)pseudo_stack;
578 NativeCallStack stack(&pc, 1);
579 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
580 WB_END
581
582 // Free the memory allocated by NMTAllocTest
583 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
584 os::free((void*)(uintptr_t)mem);
585 WB_END
586
587 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
588 jlong addr = 0;
589
590 addr = (jlong)(uintptr_t)os::reserve_memory(size);
591 MemTracker::record_virtual_memory_type((address)addr, mtTest);
592
593 return addr;
594 WB_END
595
596 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
597 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
598 MemTracker::record_virtual_memory_type((address)addr, mtTest);
599
600 return addr;
601 WB_END
602
603 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
604 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
605 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
606 WB_END
607
608 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
609 os::uncommit_memory((char *)(uintptr_t)addr, size);
610 WB_END
611
612 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
613 os::release_memory((char *)(uintptr_t)addr, size);
614 WB_END
615
616 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
617 // Test that we can downgrade NMT levels but not upgrade them.
618 if (MemTracker::tracking_level() == NMT_off) {
619 MemTracker::transition_to(NMT_off);
620 return MemTracker::tracking_level() == NMT_off;
621 } else {
622 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
623 MemTracker::transition_to(NMT_summary);
624 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
625
626 // Can't go to detail once NMT is set to summary.
627 MemTracker::transition_to(NMT_detail);
628 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
629
630 // Shutdown sets tracking level to minimal.
631 MemTracker::shutdown();
632 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
633
634 // Once the tracking level is minimal, we cannot increase to summary.
635 // The code ignores this request instead of asserting because if the malloc site
636 // table overflows in another thread, it tries to change the code to summary.
637 MemTracker::transition_to(NMT_summary);
638 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
639
640 // Really can never go up to detail, verify that the code would never do this.
641 MemTracker::transition_to(NMT_detail);
642 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
643 return MemTracker::tracking_level() == NMT_minimal;
644 }
645 WB_END
646
647 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
648 int hash_size = MallocSiteTable::hash_buckets();
649 assert(hash_size > 0, "NMT hash_size should be > 0");
650 return (jint)hash_size;
651 WB_END
652 #endif // INCLUDE_NMT
653
654 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
655 assert(method != NULL, "method should not be null");
656 ThreadToNativeFromVM ttn(thread);
657 return env->FromReflectedMethod(method);
658 }
659
660 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
661 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
662 private:
663 int _result;
664 const bool _make_not_entrant;
665 public:
666 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
667 _result(0), _make_not_entrant(make_not_entrant) { }
668 int result() const { return _result; }
669
670 void doit() {
671 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
672 if (t->has_last_Java_frame()) {
673 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
674 frame* f = fst.current();
675 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
676 RegisterMap* reg_map = fst.register_map();
677 Deoptimization::deoptimize(t, *f, reg_map);
678 if (_make_not_entrant) {
679 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
680 assert(cm != NULL, "sanity check");
681 cm->make_not_entrant();
682 }
683 ++_result;
684 }
685 }
686 }
687 }
688 }
689 };
690
691 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
692 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
693 VMThread::execute(&op);
694 return op.result();
695 WB_END
696
697 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
698 MutexLockerEx mu(Compile_lock);
699 CodeCache::mark_all_nmethods_for_deoptimization();
700 VM_Deoptimize op;
701 VMThread::execute(&op);
702 WB_END
703
704 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
705 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
706 int result = 0;
707 CHECK_JNI_EXCEPTION_(env, result);
708 MutexLockerEx mu(Compile_lock);
709 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
710 if (is_osr) {
711 result += mh->mark_osr_nmethods();
712 } else if (mh->code() != NULL) {
713 mh->code()->mark_for_deoptimization();
714 ++result;
715 }
716 result += CodeCache::mark_for_deoptimization(mh());
717 if (result > 0) {
718 VM_Deoptimize op;
719 VMThread::execute(&op);
720 }
721 return result;
722 WB_END
723
724 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
725 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
726 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
727 MutexLockerEx mu(Compile_lock);
728 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
729 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
730 if (code == NULL) {
731 return JNI_FALSE;
732 }
733 return (code->is_alive() && !code->is_marked_for_deoptimization());
734 WB_END
735
736 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
737 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
738 return false;
739 }
740 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
741 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
742 MutexLockerEx mu(Compile_lock);
743 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
744 if (is_osr) {
745 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
746 } else {
747 return CompilationPolicy::can_be_compiled(mh, comp_level);
748 }
749 WB_END
750
751 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
752 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
753 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
754 MutexLockerEx mu(Compile_lock);
755 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
756 return mh->queued_for_compilation();
757 WB_END
758
759 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
760 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
761 return false; // Intrinsic is not available on a non-existent compilation level.
762 }
763 jmethodID method_id, compilation_context_id;
764 method_id = reflected_method_to_jmid(thread, env, method);
765 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
766 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
767
768 DirectiveSet* directive;
769 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
770 assert(comp != NULL, "compiler not available");
771 if (compilation_context != NULL) {
772 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
773 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
774 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
775 directive = DirectivesStack::getMatchingDirective(cch, comp);
776 } else {
777 // Calling with NULL matches default directive
778 directive = DirectivesStack::getDefaultDirective(comp);
779 }
780 bool result = comp->is_intrinsic_available(mh, directive);
781 DirectivesStack::release(directive);
782 return result;
783 WB_END
784
785 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
786 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
787 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
788 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
789 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
790 return (code != NULL ? code->comp_level() : CompLevel_none);
791 WB_END
792
793 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
794 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
795 CHECK_JNI_EXCEPTION(env);
796 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
797 if (is_osr) {
798 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
799 } else {
800 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
801 }
802 WB_END
803
804 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
805 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
806 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
807 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
808 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
809 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
810 WB_END
811
812 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
813 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
814 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
815 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
816 bool result = mh->dont_inline();
817 mh->set_dont_inline(value == JNI_TRUE);
818 return result;
819 WB_END
820
821 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
822 if (comp_level == CompLevel_any) {
823 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
824 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
825 } else {
826 return CompileBroker::queue_size(comp_level);
827 }
828 WB_END
829
830 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
831 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
832 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
833 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
834 bool result = mh->force_inline();
835 mh->set_force_inline(value == JNI_TRUE);
836 return result;
837 WB_END
838
839 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
840 // Screen for unavailable/bad comp level or null method
841 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
842 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) {
843 return false;
844 }
845
846 // Check if compilation is blocking
847 methodHandle mh(THREAD, method);
848 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
849 bool is_blocking = !directive->BackgroundCompilationOption;
850 DirectivesStack::release(directive);
851
852 // Compile method and check result
853 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
854 MutexLockerEx mu(Compile_lock);
855 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL);
856 }
857
858 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
859 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
860 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
861 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
862 WB_END
863
864 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
865 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
866 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
867 WB_END
868
869 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
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 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
875 bool result = directive->PrintAssemblyOption;
876 DirectivesStack::release(directive);
877
878 return result;
879 WB_END
880
881 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
882 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
883 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
884
885 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
886
887 ResourceMark rm;
888 const char* error_msg = NULL;
889 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
890 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
891
892 if (m == NULL) {
893 assert(error_msg != NULL, "Always have an error message");
894 tty->print_cr("Got error: %s", error_msg);
895 return -1; // Pattern failed
896 }
897
898 // Pattern works - now check if it matches
899 int result;
900 if (m->match(mh, InlineMatcher::force_inline)) {
901 result = 2; // Force inline match
902 } else if (m->match(mh, InlineMatcher::dont_inline)) {
903 result = 1; // Dont inline match
904 } else {
905 result = 0; // No match
906 }
907 delete m;
908 return result;
909 WB_END
910
911 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
912 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
913 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
914
915 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
916
917 ResourceMark rm;
918 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
919
920 const char* error_msg = NULL;
921
922 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
923 if (m == NULL) {
924 assert(error_msg != NULL, "Must have error_msg");
925 tty->print_cr("Got error: %s", error_msg);
926 return -1;
927 }
928
929 // Pattern works - now check if it matches
930 int result = m->matches(mh);
931 delete m;
932 assert(result == 0 || result == 1, "Result out of range");
933 return result;
934 WB_END
935
936 static AlwaysFalseClosure always_false;
937
938 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
939 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
940 CHECK_JNI_EXCEPTION(env);
941 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
942 MutexLockerEx mu(Compile_lock);
943 MethodData* mdo = mh->method_data();
944 MethodCounters* mcs = mh->method_counters();
945
946 if (mdo != NULL) {
947 mdo->init();
948 ResourceMark rm;
949 int arg_count = mdo->method()->size_of_parameters();
950 for (int i = 0; i < arg_count; i++) {
951 mdo->set_arg_modified(i, 0);
952 }
953 MutexLockerEx mu(mdo->extra_data_lock());
954 mdo->clean_method_data(&always_false);
955 }
956
957 mh->clear_not_c1_compilable();
958 mh->clear_not_c2_compilable();
959 mh->clear_not_c2_osr_compilable();
960 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
961 if (mcs != NULL) {
962 mcs->backedge_counter()->init();
963 mcs->invocation_counter()->init();
964 mcs->set_interpreter_invocation_count(0);
965 mcs->set_interpreter_throwout_count(0);
966
967 #ifdef TIERED
968 mcs->set_rate(0.0F);
969 mh->set_prev_event_count(0);
970 mh->set_prev_time(0);
971 #endif
972 }
973 WB_END
974
975 template <typename T>
976 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
977 if (name == NULL) {
978 return false;
979 }
980 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
981 const char* flag_name = env->GetStringUTFChars(name, NULL);
982 CHECK_JNI_EXCEPTION_(env, false);
983 Flag::Error result = (*TAt)(flag_name, value, true, true);
984 env->ReleaseStringUTFChars(name, flag_name);
985 return (result == Flag::SUCCESS);
986 }
987
988 template <typename T>
989 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
990 if (name == NULL) {
991 return false;
992 }
993 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
994 const char* flag_name = env->GetStringUTFChars(name, NULL);
995 CHECK_JNI_EXCEPTION_(env, false);
996 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
997 env->ReleaseStringUTFChars(name, flag_name);
998 return (result == Flag::SUCCESS);
999 }
1000
1001 template <typename T>
1002 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1003 ResourceMark rm(thread);
1004 jclass clazz = env->FindClass(name->as_C_string());
1005 CHECK_JNI_EXCEPTION_(env, NULL);
1006 jmethodID methodID = env->GetStaticMethodID(clazz,
1007 vmSymbols::valueOf_name()->as_C_string(),
1008 sig->as_C_string());
1009 CHECK_JNI_EXCEPTION_(env, NULL);
1010 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1011 CHECK_JNI_EXCEPTION_(env, NULL);
1012 return result;
1013 }
1014
1015 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1016 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1017 }
1018 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1019 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1020 }
1021 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1022 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1023 }
1024 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1025 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1026 }*/
1027 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1028 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1029 }
1030
1031 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1032 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1033 const char* flag_name = env->GetStringUTFChars(name, NULL);
1034 CHECK_JNI_EXCEPTION_(env, NULL);
1035 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1036 env->ReleaseStringUTFChars(name, flag_name);
1037 return result;
1038 }
1039
1040 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1041 Flag* flag = getVMFlag(thread, env, name);
1042 return (flag != NULL) && flag->is_constant_in_binary();
1043 WB_END
1044
1045 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1046 Flag* flag = getVMFlag(thread, env, name);
1047 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1048 WB_END
1049
1050 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1051 bool result;
1052 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1053 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1054 return booleanBox(thread, env, result);
1055 }
1056 return NULL;
1057 WB_END
1058
1059 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1060 int result;
1061 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1062 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1063 return longBox(thread, env, result);
1064 }
1065 return NULL;
1066 WB_END
1067
1068 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1069 uint result;
1070 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1071 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1072 return longBox(thread, env, result);
1073 }
1074 return NULL;
1075 WB_END
1076
1077 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1078 intx result;
1079 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1080 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1081 return longBox(thread, env, result);
1082 }
1083 return NULL;
1084 WB_END
1085
1086 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1087 uintx result;
1088 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1089 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1090 return longBox(thread, env, result);
1091 }
1092 return NULL;
1093 WB_END
1094
1095 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1096 uint64_t result;
1097 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1098 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1099 return longBox(thread, env, result);
1100 }
1101 return NULL;
1102 WB_END
1103
1104 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1105 uintx result;
1106 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1107 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1108 return longBox(thread, env, result);
1109 }
1110 return NULL;
1111 WB_END
1112
1113 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1114 double result;
1115 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1117 return doubleBox(thread, env, result);
1118 }
1119 return NULL;
1120 WB_END
1121
1122 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1123 ccstr ccstrResult;
1124 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1126 jstring result = env->NewStringUTF(ccstrResult);
1127 CHECK_JNI_EXCEPTION_(env, NULL);
1128 return result;
1129 }
1130 return NULL;
1131 WB_END
1132
1133 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1134 bool result = value == JNI_TRUE ? true : false;
1135 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1136 WB_END
1137
1138 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1139 int result = value;
1140 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1141 WB_END
1142
1143 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1144 uint result = value;
1145 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1146 WB_END
1147
1148 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1149 intx result = value;
1150 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1151 WB_END
1152
1153 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1154 uintx result = value;
1155 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1156 WB_END
1157
1158 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1159 uint64_t result = value;
1160 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1161 WB_END
1162
1163 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1164 size_t result = value;
1165 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1166 WB_END
1167
1168 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1169 double result = value;
1170 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1171 WB_END
1172
1173 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1174 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1175 const char* ccstrValue;
1176 if (value == NULL) {
1177 ccstrValue = NULL;
1178 }
1179 else {
1180 ccstrValue = env->GetStringUTFChars(value, NULL);
1181 CHECK_JNI_EXCEPTION(env);
1182 }
1183 ccstr ccstrResult = ccstrValue;
1184 bool needFree;
1185 {
1186 ThreadInVMfromNative ttvfn(thread); // back to VM
1187 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1188 }
1189 if (value != NULL) {
1190 env->ReleaseStringUTFChars(value, ccstrValue);
1191 }
1192 if (needFree) {
1193 FREE_C_HEAP_ARRAY(char, ccstrResult);
1194 }
1195 WB_END
1196
1197 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1198 WhiteBox::compilation_locked = true;
1199 WB_END
1200
1201 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1202 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1203 WhiteBox::compilation_locked = false;
1204 mo.notify_all();
1205 WB_END
1206
1207 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1208 // Force a code cache sweep and block until it finished
1209 NMethodSweeper::force_sweep();
1210 WB_END
1211
1212 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1213 ResourceMark rm(THREAD);
1214 int len;
1215 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1216 return (StringTable::lookup(name, len) != NULL);
1217 WB_END
1218
1219 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1220 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1221 Universe::heap()->collect(GCCause::_wb_full_gc);
1222 #if INCLUDE_ALL_GCS
1223 if (UseG1GC) {
1224 // Needs to be cleared explicitly for G1
1225 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1226 }
1227 #endif // INCLUDE_ALL_GCS
1228 WB_END
1229
1230 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1231 Universe::heap()->collect(GCCause::_wb_young_gc);
1232 WB_END
1233
1234 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1235 // static+volatile in order to force the read to happen
1236 // (not be eliminated by the compiler)
1237 static char c;
1238 static volatile char* p;
1239
1240 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1241 if (p == NULL) {
1242 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1243 }
1244
1245 c = *p;
1246 WB_END
1247
1248 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1249 const char* features = VM_Version::features_string();
1250 ThreadToNativeFromVM ttn(thread);
1251 jstring features_string = env->NewStringUTF(features);
1252
1253 CHECK_JNI_EXCEPTION_(env, NULL);
1254
1255 return features_string;
1256 WB_END
1257
1258 int WhiteBox::get_blob_type(const CodeBlob* code) {
1259 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1260 if (code->is_aot()) {
1261 return -1;
1262 }
1263 return CodeCache::get_code_heap(code)->code_blob_type();
1264 }
1265
1266 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1267 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1268 return CodeCache::get_code_heap(blob_type);
1269 }
1270
1271 struct CodeBlobStub {
1272 CodeBlobStub(const CodeBlob* blob) :
1273 name(os::strdup(blob->name())),
1274 size(blob->size()),
1275 blob_type(WhiteBox::get_blob_type(blob)),
1276 address((jlong) blob) { }
1277 ~CodeBlobStub() { os::free((void*) name); }
1278 const char* const name;
1279 const jint size;
1280 const jint blob_type;
1281 const jlong address;
1282 };
1283
1284 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1285 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1286 CHECK_JNI_EXCEPTION_(env, NULL);
1287 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1288
1289 jstring name = env->NewStringUTF(cb->name);
1290 CHECK_JNI_EXCEPTION_(env, NULL);
1291 env->SetObjectArrayElement(result, 0, name);
1292
1293 jobject obj = integerBox(thread, env, cb->size);
1294 CHECK_JNI_EXCEPTION_(env, NULL);
1295 env->SetObjectArrayElement(result, 1, obj);
1296
1297 obj = integerBox(thread, env, cb->blob_type);
1298 CHECK_JNI_EXCEPTION_(env, NULL);
1299 env->SetObjectArrayElement(result, 2, obj);
1300
1301 obj = longBox(thread, env, cb->address);
1302 CHECK_JNI_EXCEPTION_(env, NULL);
1303 env->SetObjectArrayElement(result, 3, obj);
1304
1305 return result;
1306 }
1307
1308 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1309 ResourceMark rm(THREAD);
1310 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1311 CHECK_JNI_EXCEPTION_(env, NULL);
1312 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1313 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1314 jobjectArray result = NULL;
1315 if (code == NULL) {
1316 return result;
1317 }
1318 int comp_level = code->comp_level();
1319 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1320
1321 ThreadToNativeFromVM ttn(thread);
1322 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1323 CHECK_JNI_EXCEPTION_(env, NULL);
1324 result = env->NewObjectArray(5, clazz, NULL);
1325 if (result == NULL) {
1326 return result;
1327 }
1328
1329 CodeBlobStub stub(code);
1330 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1331 CHECK_JNI_EXCEPTION_(env, NULL);
1332 env->SetObjectArrayElement(result, 0, codeBlob);
1333
1334 jobject level = integerBox(thread, env, comp_level);
1335 CHECK_JNI_EXCEPTION_(env, NULL);
1336 env->SetObjectArrayElement(result, 1, level);
1337
1338 jbyteArray insts = env->NewByteArray(insts_size);
1339 CHECK_JNI_EXCEPTION_(env, NULL);
1340 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1341 env->SetObjectArrayElement(result, 2, insts);
1342
1343 jobject id = integerBox(thread, env, code->compile_id());
1344 CHECK_JNI_EXCEPTION_(env, NULL);
1345 env->SetObjectArrayElement(result, 3, id);
1346
1347 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1348 CHECK_JNI_EXCEPTION_(env, NULL);
1349 env->SetObjectArrayElement(result, 4, entry_point);
1350
1351 return result;
1352 WB_END
1353
1354 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1355 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1356 BufferBlob* blob;
1357 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1358 if (full_size < size) {
1359 full_size += align_up(size - full_size, oopSize);
1360 }
1361 {
1362 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1363 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1364 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1365 }
1366 // Track memory usage statistic after releasing CodeCache_lock
1367 MemoryService::track_code_cache_memory_usage();
1368 return blob;
1369 }
1370
1371 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1372 if (size < 0) {
1373 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1374 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1375 }
1376 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1377 WB_END
1378
1379 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1380 if (addr == 0) {
1381 return;
1382 }
1383 BufferBlob::free((BufferBlob*) addr);
1384 WB_END
1385
1386 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1387 ResourceMark rm;
1388 GrowableArray<CodeBlobStub*> blobs;
1389 {
1390 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1391 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1392 if (heap == NULL) {
1393 return NULL;
1394 }
1395 for (CodeBlob* cb = (CodeBlob*) heap->first();
1396 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1397 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1398 new (stub) CodeBlobStub(cb);
1399 blobs.append(stub);
1400 }
1401 }
1402 if (blobs.length() == 0) {
1403 return NULL;
1404 }
1405 ThreadToNativeFromVM ttn(thread);
1406 jobjectArray result = NULL;
1407 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1408 CHECK_JNI_EXCEPTION_(env, NULL);
1409 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1410 CHECK_JNI_EXCEPTION_(env, NULL);
1411 if (result == NULL) {
1412 return result;
1413 }
1414 int i = 0;
1415 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1416 it != blobs.end(); ++it) {
1417 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1418 CHECK_JNI_EXCEPTION_(env, NULL);
1419 env->SetObjectArrayElement(result, i, obj);
1420 CHECK_JNI_EXCEPTION_(env, NULL);
1421 ++i;
1422 }
1423 return result;
1424 WB_END
1425
1426 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1427 return CompileBroker::get_compilation_activity_mode();
1428 WB_END
1429
1430 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1431 if (addr == 0) {
1432 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1433 "WB_GetCodeBlob: addr is null");
1434 }
1435 ThreadToNativeFromVM ttn(thread);
1436 CodeBlobStub stub((CodeBlob*) addr);
1437 return codeBlob2objectArray(thread, env, &stub);
1438 WB_END
1439
1440 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1441 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1442 CHECK_JNI_EXCEPTION_(env, 0);
1443 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1444 return (jlong) mh->method_data();
1445 WB_END
1446
1447 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1448 return (jlong) Thread::current()->stack_size();
1449 WB_END
1450
1451 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1452 JavaThread* t = JavaThread::current();
1453 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1454 WB_END
1455
1456
1457 int WhiteBox::array_bytes_to_length(size_t bytes) {
1458 return Array<u1>::bytes_to_length(bytes);
1459 }
1460
1461 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1462 if (size < 0) {
1463 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1464 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1465 }
1466
1467 oop class_loader_oop = JNIHandles::resolve(class_loader);
1468 ClassLoaderData* cld = class_loader_oop != NULL
1469 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1470 : ClassLoaderData::the_null_class_loader_data();
1471
1472 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1473
1474 return (jlong)(uintptr_t)metadata;
1475 WB_END
1476
1477 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1478 oop class_loader_oop = JNIHandles::resolve(class_loader);
1479 ClassLoaderData* cld = class_loader_oop != NULL
1480 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1481 : ClassLoaderData::the_null_class_loader_data();
1482
1483 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1484 WB_END
1485
1486 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1487 jstring version, jstring location, jobjectArray packages))
1488 ResourceMark rm(THREAD);
1489
1490 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1491 objArrayHandle packages_h(THREAD, packages_oop);
1492 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1493
1494 char** pkgs = NULL;
1495 if (num_packages > 0) {
1496 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1497 for (int x = 0; x < num_packages; x++) {
1498 oop pkg_str = packages_h->obj_at(x);
1499 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1500 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1501 err_msg("Bad package name"));
1502 }
1503 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1504 }
1505 }
1506 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1507 WB_END
1508
1509 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1510 ResourceMark rm(THREAD);
1511 char* package_name = NULL;
1512 if (package != NULL) {
1513 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1514 }
1515 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1516 WB_END
1517
1518 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1519 ResourceMark rm(THREAD);
1520 char* package_name = NULL;
1521 if (package != NULL) {
1522 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1523 }
1524 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1525 WB_END
1526
1527 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1528 ResourceMark rm(THREAD);
1529 char* package_name = NULL;
1530 if (package != NULL) {
1531 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1532 }
1533 Modules::add_module_exports(module, package_name, NULL, CHECK);
1534 WB_END
1535
1536 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1537 Modules::add_reads_module(from_module, source_module, CHECK);
1538 WB_END
1539
1540 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1541 if (inc < 0) {
1542 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1543 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1544 }
1545
1546 jlong max_size_t = (jlong) ((size_t) -1);
1547 if (inc > max_size_t) {
1548 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1549 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1550 }
1551
1552 size_t new_cap_until_GC = 0;
1553 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1554 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1555 if (!success) {
1556 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1557 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1558 "due to contention with another thread");
1559 }
1560 return (jlong) new_cap_until_GC;
1561 WB_END
1562
1563 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1564 return (jlong) MetaspaceGC::capacity_until_GC();
1565 WB_END
1566
1567 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1568 return MetaspaceGC::should_concurrent_collect();
1569 WB_END
1570
1571 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1572 return (jlong)Metaspace::reserve_alignment();
1573 WB_END
1574
1575 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1576 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1577 Monitor::_safepoint_check_always :
1578 Monitor::_safepoint_check_never;
1579 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1580 attemptedNoSafepointValue == JNI_TRUE);
1581 WB_END
1582
1583 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1584 oop obj_oop = JNIHandles::resolve(obj);
1585 return (jboolean) obj_oop->mark()->has_monitor();
1586 WB_END
1587
1588 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1589 VM_ForceSafepoint force_safepoint_op;
1590 VMThread::execute(&force_safepoint_op);
1591 WB_END
1592
1593 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1594 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1595 return (jlong) ik->constants();
1596 WB_END
1597
1598 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1599 return ConstantPool::CPCACHE_INDEX_TAG;
1600 WB_END
1601
1602 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1603 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1604 ConstantPool* cp = ik->constants();
1605 if (cp->cache() == NULL) {
1606 return -1;
1607 }
1608 return cp->cache()->length();
1609 WB_END
1610
1611 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1612 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1613 ConstantPool* cp = ik->constants();
1614 if (cp->cache() == NULL) {
1615 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1616 }
1617 jint cpci = index;
1618 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1619 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1620 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1621 }
1622 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1623 return cpi;
1624 WB_END
1625
1626 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1627 return ConstantPool::encode_invokedynamic_index(index);
1628 WB_END
1629
1630 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1631 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1632 VMThread::execute(&clear_ics);
1633 WB_END
1634
1635 template <typename T>
1636 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1637 assert(value != NULL, "sanity");
1638 if (method == NULL || name == NULL) {
1639 return false;
1640 }
1641 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1642 CHECK_JNI_EXCEPTION_(env, false);
1643 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1644 // can't be in VM when we call JNI
1645 ThreadToNativeFromVM ttnfv(thread);
1646 const char* flag_name = env->GetStringUTFChars(name, NULL);
1647 CHECK_JNI_EXCEPTION_(env, false);
1648 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1649 env->ReleaseStringUTFChars(name, flag_name);
1650 return result;
1651 }
1652
1653 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1654 bool result;
1655 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1656 // can't be in VM when we call JNI
1657 ThreadToNativeFromVM ttnfv(thread);
1658 return booleanBox(thread, env, result);
1659 }
1660 return NULL;
1661 WB_END
1662
1663 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1664 intx result;
1665 if (GetMethodOption <intx> (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_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1674 uintx result;
1675 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1676 // can't be in VM when we call JNI
1677 ThreadToNativeFromVM ttnfv(thread);
1678 return longBox(thread, env, result);
1679 }
1680 return NULL;
1681 WB_END
1682
1683 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1684 double result;
1685 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1686 // can't be in VM when we call JNI
1687 ThreadToNativeFromVM ttnfv(thread);
1688 return doubleBox(thread, env, result);
1689 }
1690 return NULL;
1691 WB_END
1692
1693 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1694 ccstr ccstrResult;
1695 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1696 // can't be in VM when we call JNI
1697 ThreadToNativeFromVM ttnfv(thread);
1698 jstring result = env->NewStringUTF(ccstrResult);
1699 CHECK_JNI_EXCEPTION_(env, NULL);
1700 return result;
1701 }
1702 return NULL;
1703 WB_END
1704
1705 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1706 oop obj_oop = JNIHandles::resolve(obj);
1707 return oopDesc::is_archive_object(obj_oop);
1708 WB_END
1709
1710 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1711 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1712 WB_END
1713
1714 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1715 return !StringTable::shared_string_mapped();
1716 WB_END
1717
1718 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1719 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1720 if (k->is_instance_klass()) {
1721 InstanceKlass *ik = InstanceKlass::cast(k);
1722 ConstantPool *cp = ik->constants();
1723 objArrayOop refs = cp->resolved_references();
1724 return (jobject)JNIHandles::make_local(env, refs);
1725 } else {
1726 return NULL;
1727 }
1728 WB_END
1729
1730 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1731 return MetaspaceShared::open_archive_heap_region_mapped();
1732 WB_END
1733
1734 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1735 #if INCLUDE_CDS
1736 # ifdef _LP64
1737 if (!UseCompressedOops || !UseCompressedClassPointers) {
1738 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1739 return false;
1740 }
1741 # endif // _LP64
1742 return true;
1743 #else
1744 return false;
1745 #endif // INCLUDE_CDS
1746 WB_END
1747
1748 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1749 return MetaspaceShared::is_heap_object_archiving_allowed();
1750 WB_END
1751
1752
1753 #if INCLUDE_CDS
1754
1755 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1756 ResourceMark rm;
1757 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1758 int result = CDSOffsets::find_offset(c_name);
1759 return (jint)result;
1760 WB_END
1761
1762 #endif // INCLUDE_CDS
1763
1764 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1765 class TraceSelfClosure : public ThreadClosure {
1766 jint _num_threads_completed;
1767
1768 void do_thread(Thread* th) {
1769 assert(th->is_Java_thread(), "sanity");
1770 JavaThread* jt = (JavaThread*)th;
1771 ResourceMark rm;
1772
1773 jt->print_on(tty);
1774 jt->print_stack_on(tty);
1775 tty->cr();
1776 Atomic::inc(&_num_threads_completed);
1777 }
1778
1779 public:
1780 TraceSelfClosure() : _num_threads_completed(0) {}
1781
1782 jint num_threads_completed() const { return _num_threads_completed; }
1783 };
1784 TraceSelfClosure tsc;
1785
1786 if (all_threads) {
1787 Handshake::execute(&tsc);
1788 } else {
1789 oop thread_oop = JNIHandles::resolve(thread_handle);
1790 if (thread_oop != NULL) {
1791 JavaThread* target = java_lang_Thread::thread(thread_oop);
1792 Handshake::execute(&tsc, target);
1793 }
1794 }
1795 return tsc.num_threads_completed();
1796 WB_END
1797
1798 //Some convenience methods to deal with objects from java
1799 int WhiteBox::offset_for_field(const char* field_name, oop object,
1800 Symbol* signature_symbol) {
1801 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1802 Thread* THREAD = Thread::current();
1803
1804 //Get the class of our object
1805 Klass* arg_klass = object->klass();
1806 //Turn it into an instance-klass
1807 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1808
1809 //Create symbols to look for in the class
1810 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1811 THREAD);
1812
1813 //To be filled in with an offset of the field we're looking for
1814 fieldDescriptor fd;
1815
1816 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1817 if (res == NULL) {
1818 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1819 name_symbol->as_C_string());
1820 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1821 }
1822
1823 //fetch the field at the offset we've found
1824 int dest_offset = fd.offset();
1825
1826 return dest_offset;
1827 }
1828
1829
1830 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1831 int offset = offset_for_field(field_name, object,
1832 vmSymbols::string_signature());
1833 oop string = object->obj_field(offset);
1834 if (string == NULL) {
1835 return NULL;
1836 }
1837 const char* ret = java_lang_String::as_utf8_string(string);
1838 return ret;
1839 }
1840
1841 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1842 int offset =
1843 offset_for_field(field_name, object, vmSymbols::bool_signature());
1844 bool ret = (object->bool_field(offset) == JNI_TRUE);
1845 return ret;
1846 }
1847
1848 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1849 ResourceMark rm;
1850 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1851
1852 // one by one registration natives for exception catching
1853 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1854 CHECK_JNI_EXCEPTION(env);
1855 for (int i = 0, n = method_count; i < n; ++i) {
1856 // Skip dummy entries
1857 if (method_array[i].fnPtr == NULL) continue;
1858 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1859 jthrowable throwable_obj = env->ExceptionOccurred();
1860 if (throwable_obj != NULL) {
1861 env->ExceptionClear();
1862 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1863 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1864 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1865 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1866 method_array[i].name, method_array[i].signature);
1867 }
1868 } else {
1869 // Registration failed unexpectedly.
1870 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1871 method_array[i].name, method_array[i].signature);
1872 env->UnregisterNatives(wbclass);
1873 break;
1874 }
1875 }
1876 }
1877 }
1878
1879 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1880 // can't be in VM when we call JNI
1881 ThreadToNativeFromVM ttnfv(thread);
1882 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1883 CHECK_JNI_EXCEPTION_(env, 0);
1884 int ret;
1885 {
1886 ThreadInVMfromNative ttvfn(thread); // back to VM
1887 ret = DirectivesParser::parse_string(dir, tty);
1888 }
1889 env->ReleaseStringUTFChars(compDirect, dir);
1890 // -1 for error parsing directive. Return 0 as number of directives added.
1891 if (ret == -1) {
1892 ret = 0;
1893 }
1894 return (jint) ret;
1895 WB_END
1896
1897 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1898 DirectivesStack::pop(count);
1899 WB_END
1900
1901 // Checks that the library libfile has the noexecstack bit set.
1902 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1903 jboolean ret = false;
1904 #ifdef LINUX
1905 // Can't be in VM when we call JNI.
1906 ThreadToNativeFromVM ttnfv(thread);
1907 const char* lf = env->GetStringUTFChars(libfile, NULL);
1908 CHECK_JNI_EXCEPTION_(env, 0);
1909 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1910 env->ReleaseStringUTFChars(libfile, lf);
1911 #endif
1912 return ret;
1913 WB_END
1914
1915 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1916 LINUX_ONLY(return OSContainer::is_containerized();)
1917 return false;
1918 WB_END
1919
1920 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1921 os::print_os_info(tty);
1922 WB_END
1923
1924 // Elf decoder
1925 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1926 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1927 ElfFile::_do_not_cache_elf_section = true;
1928 #endif
1929 WB_END
1930
1931
1932 #define CC (char*)
1933
1934 static JNINativeMethod methods[] = {
1935 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1936 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1937 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1938 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1939 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1940 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1941 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1942 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1943 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1944 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1945 {CC"parseCommandLine0",
1946 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1947 (void*) &WB_ParseCommandLine
1948 },
1949 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1950 (void*)&WB_AddToBootstrapClassLoaderSearch},
1951 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1952 (void*)&WB_AddToSystemClassLoaderSearch},
1953 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1954 (void*)&WB_GetCompressedOopsMaxHeapSize},
1955 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1956 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1957 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1958 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1959 #if INCLUDE_CDS
1960 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1961 #endif
1962 #if INCLUDE_ALL_GCS
1963 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1964 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1965 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1966 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1967 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1968 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1969 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1970 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1971 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1972 (void*)&WB_G1AuxiliaryMemoryUsage },
1973 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1974 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1975 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1976 #endif // INCLUDE_ALL_GCS
1977 #if INCLUDE_NMT
1978 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1979 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1980 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1981 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1982 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
1983 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1984 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1985 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1986 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1987 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1988 #endif // INCLUDE_NMT
1989 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1990 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1991 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1992 (void*)&WB_DeoptimizeMethod },
1993 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1994 (void*)&WB_IsMethodCompiled },
1995 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1996 (void*)&WB_IsMethodCompilable},
1997 {CC"isMethodQueuedForCompilation0",
1998 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1999 {CC"isIntrinsicAvailable0",
2000 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2001 (void*)&WB_IsIntrinsicAvailable},
2002 {CC"makeMethodNotCompilable0",
2003 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2004 {CC"testSetDontInlineMethod0",
2005 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2006 {CC"getMethodCompilationLevel0",
2007 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2008 {CC"getMethodEntryBci0",
2009 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2010 {CC"getCompileQueueSize",
2011 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2012 {CC"testSetForceInlineMethod0",
2013 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2014 {CC"enqueueMethodForCompilation0",
2015 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2016 {CC"enqueueInitializerForCompilation0",
2017 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2018 {CC"clearMethodState0",
2019 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2020 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2021 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2022 {CC"matchesMethod",
2023 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2024 (void*)&WB_MatchesMethod},
2025 {CC"matchesInline",
2026 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2027 (void*)&WB_MatchesInline},
2028 {CC"shouldPrintAssembly",
2029 CC"(Ljava/lang/reflect/Executable;I)Z",
2030 (void*)&WB_ShouldPrintAssembly},
2031
2032 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2033 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2034 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2035 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2036 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2037 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2038 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2039 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2040 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2041 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2042 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2043 (void*)&WB_SetStringVMFlag},
2044 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2045 (void*)&WB_GetBooleanVMFlag},
2046 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2047 (void*)&WB_GetIntVMFlag},
2048 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2049 (void*)&WB_GetUintVMFlag},
2050 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2051 (void*)&WB_GetIntxVMFlag},
2052 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2053 (void*)&WB_GetUintxVMFlag},
2054 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2055 (void*)&WB_GetUint64VMFlag},
2056 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2057 (void*)&WB_GetSizeTVMFlag},
2058 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2059 (void*)&WB_GetDoubleVMFlag},
2060 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2061 (void*)&WB_GetStringVMFlag},
2062 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2063 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2064 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2065 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2066 {CC"allocateMetaspace",
2067 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2068 {CC"freeMetaspace",
2069 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2070 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2071 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2072 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2073 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2074 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2075 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2076 (void*)&WB_GetNMethod },
2077 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2078 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2079 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2080 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2081 {CC"getCompilationActivityMode",
2082 CC"()I", (void*)&WB_GetCompilationActivityMode},
2083 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2084 (void*)&WB_GetMethodData },
2085 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2086 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2087 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2088 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2089 (void*)&WB_DefineModule },
2090 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2091 (void*)&WB_AddModuleExports },
2092 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2093 (void*)&WB_AddReadsModule },
2094 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2095 (void*)&WB_AddModuleExportsToAllUnnamed },
2096 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2097 (void*)&WB_AddModuleExportsToAll },
2098 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2099 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2100 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2101 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2102 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2103 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2104 {CC"remapInstructionOperandFromCPCache0",
2105 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2106 {CC"encodeConstantPoolIndyIndex0",
2107 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2108 {CC"getMethodBooleanOption",
2109 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2110 (void*)&WB_GetMethodBooleaneOption},
2111 {CC"getMethodIntxOption",
2112 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2113 (void*)&WB_GetMethodIntxOption},
2114 {CC"getMethodUintxOption",
2115 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2116 (void*)&WB_GetMethodUintxOption},
2117 {CC"getMethodDoubleOption",
2118 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2119 (void*)&WB_GetMethodDoubleOption},
2120 {CC"getMethodStringOption",
2121 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2122 (void*)&WB_GetMethodStringOption},
2123 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2124 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2125 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2126 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2127 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2128 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2129 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2130
2131 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2132 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2133 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2134 (void*)&WB_AddCompilerDirective },
2135 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2136 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2137 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2138 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2139 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2140 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2141 (void*)&WB_GetConcurrentGCPhases},
2142 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2143 (void*)&WB_RequestConcurrentGCPhase},
2144 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2145 (void*)&WB_CheckLibSpecifiesNoexecstack},
2146 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2147 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2148 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2149 };
2150
2151
2152 #undef CC
2153
2154 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2155 {
2156 if (WhiteBoxAPI) {
2157 // Make sure that wbclass is loaded by the null classloader
2158 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2159 Handle loader(THREAD, ik->class_loader());
2160 if (loader.is_null()) {
2161 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2162 WhiteBox::set_used();
2163 }
2164 }
2165 }
2166 JVM_END