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 "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/handshake.hpp"
53 #include "runtime/interfaceSupport.hpp"
54 #include "runtime/javaCalls.hpp"
55 #include "runtime/os.hpp"
56 #include "runtime/sweeper.hpp"
57 #include "runtime/thread.hpp"
58 #include "runtime/threadSMR.hpp"
59 #include "runtime/vm_version.hpp"
60 #include "utilities/align.hpp"
61 #include "utilities/debug.hpp"
62 #include "utilities/exceptions.hpp"
63 #include "utilities/elfFile.hpp"
64 #include "utilities/macros.hpp"
65 #if INCLUDE_CDS
66 #include "prims/cdsoffsets.hpp"
67 #endif // INCLUDE_CDS
68 #if INCLUDE_ALL_GCS
69 #include "gc/g1/concurrentMarkThread.hpp"
70 #include "gc/g1/g1CollectedHeap.inline.hpp"
71 #include "gc/g1/g1ConcurrentMark.hpp"
72 #include "gc/g1/heapRegionRemSet.hpp"
73 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
74 #include "gc/parallel/adjoiningGenerations.hpp"
75 #endif // INCLUDE_ALL_GCS
76 #if INCLUDE_NMT
77 #include "services/mallocSiteTable.hpp"
78 #include "services/memTracker.hpp"
79 #include "utilities/nativeCallStack.hpp"
80 #endif // INCLUDE_NMT
81
82 #ifdef LINUX
83 #include "utilities/elfFile.hpp"
84 #include "osContainer_linux.hpp"
85 #endif
86
87 #define SIZE_T_MAX_VALUE ((size_t) -1)
88
89 bool WhiteBox::_used = false;
90 volatile bool WhiteBox::compilation_locked = false;
91
92 class VM_WhiteBoxOperation : public VM_Operation {
93 public:
94 VM_WhiteBoxOperation() { }
95 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
96 bool allow_nested_vm_operations() const { return true; }
97 };
98
99
100 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
101 return (jlong)(void*)JNIHandles::resolve(obj);
102 WB_END
103
104 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
105 return heapOopSize;
106 WB_END
107
108 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
109 return os::vm_page_size();
110 WB_END
111
112 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
113 return os::vm_allocation_granularity();
114 WB_END
115
116 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
117 return os::large_page_size();
118 WB_END
119
120 class WBIsKlassAliveClosure : public KlassClosure {
121 Symbol* _name;
122 bool _found;
123 public:
124 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
125
126 void do_klass(Klass* k) {
127 if (_found) return;
128 Symbol* ksym = k->name();
129 if (ksym->fast_compare(_name) == 0) {
130 _found = true;
131 }
132 }
133
134 bool found() const {
135 return _found;
136 }
137 };
138
139 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
140 oop h_name = JNIHandles::resolve(name);
141 if (h_name == NULL) return false;
142 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
143 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
144
145 WBIsKlassAliveClosure closure(sym);
146 ClassLoaderDataGraph::classes_do(&closure);
147
148 return closure.found();
149 WB_END
150
151 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(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->AddToBootstrapClassLoaderSearch(seg);
157 assert(err == JVMTI_ERROR_NONE, "must not fail");
158 #endif
159 }
160 WB_END
161
162 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
163 #if INCLUDE_JVMTI
164 ResourceMark rm;
165 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
166 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
167 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
168 assert(err == JVMTI_ERROR_NONE, "must not fail");
169 #endif
170 }
171 WB_END
172
173
174 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
175 return (jlong)Arguments::max_heap_for_compressed_oops();
176 }
177 WB_END
178
179 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
180 CollectorPolicy * p = Universe::heap()->collector_policy();
181 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
182 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
183 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
184 p->space_alignment(), p->heap_alignment());
185 }
186 WB_END
187
188 #ifndef PRODUCT
189 // Forward declaration
190 void TestReservedSpace_test();
191 void TestReserveMemorySpecial_test();
192 void TestVirtualSpace_test();
193 void TestMetaspaceAux_test();
194 #endif
195
196 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
197 #ifndef PRODUCT
198 TestReservedSpace_test();
199 TestReserveMemorySpecial_test();
200 TestVirtualSpace_test();
201 TestMetaspaceAux_test();
202 #endif
203 WB_END
204
205 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
206 size_t granularity = os::vm_allocation_granularity();
207 ReservedHeapSpace rhs(100 * granularity, granularity, false);
208 VirtualSpace vs;
209 vs.initialize(rhs, 50 * granularity);
210
211 // Check if constraints are complied
212 if (!( UseCompressedOops && rhs.base() != NULL &&
213 Universe::narrow_oop_base() != NULL &&
214 Universe::narrow_oop_use_implicit_null_checks() )) {
215 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
216 "\tUseCompressedOops is %d\n"
217 "\trhs.base() is " PTR_FORMAT "\n"
218 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
219 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
220 UseCompressedOops,
221 p2i(rhs.base()),
222 p2i(Universe::narrow_oop_base()),
223 Universe::narrow_oop_use_implicit_null_checks());
224 return;
225 }
226 tty->print_cr("Reading from no access area... ");
227 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
228 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
229 WB_END
230
231 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
232 size_t magnitude, size_t iterations) {
233 size_t granularity = os::vm_allocation_granularity();
234 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
235 VirtualSpace vs;
236 if (!vs.initialize(rhs, 0)) {
237 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
238 return 3;
239 }
240
241 int seed = os::random();
242 tty->print_cr("Random seed is %d", seed);
243 os::init_random(seed);
244
245 for (size_t i = 0; i < iterations; i++) {
246
247 // Whether we will shrink or grow
248 bool shrink = os::random() % 2L == 0;
249
250 // Get random delta to resize virtual space
251 size_t delta = (size_t)os::random() % magnitude;
252
253 // If we are about to shrink virtual space below zero, then expand instead
254 if (shrink && vs.committed_size() < delta) {
255 shrink = false;
256 }
257
258 // Resizing by delta
259 if (shrink) {
260 vs.shrink_by(delta);
261 } else {
262 // If expanding fails expand_by will silently return false
263 vs.expand_by(delta, true);
264 }
265 }
266 return 0;
267 }
268
269 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
270 jlong reserved_space_size, jlong magnitude, jlong iterations))
271 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
272 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
273 iterations);
274 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
275 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
276 return 1;
277 }
278
279 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
280 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
281 if (sizeof(size_t) < sizeof(jlong)) {
282 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
283 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
284 || iterations > size_t_max_value) {
285 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
286 return 2;
287 }
288 }
289
290 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
291 (size_t) magnitude, (size_t) iterations);
292 WB_END
293
294 static const jint serial_code = 1;
295 static const jint parallel_code = 2;
296 static const jint cms_code = 4;
297 static const jint g1_code = 8;
298
299 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
300 if (UseSerialGC) {
301 return serial_code;
302 } else if (UseParallelGC || UseParallelOldGC) {
303 return parallel_code;
304 } if (UseConcMarkSweepGC) {
305 return cms_code;
306 } else if (UseG1GC) {
307 return g1_code;
308 }
309 ShouldNotReachHere();
310 return 0;
311 WB_END
312
313 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
314 #if INCLUDE_ALL_GCS
315 return serial_code | parallel_code | cms_code | g1_code;
316 #else
317 return serial_code;
318 #endif // INCLUDE_ALL_GCS
319 WB_END
320
321 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
322 if (UseSerialGC) {
323 return FLAG_IS_ERGO(UseSerialGC);
324 } else if (UseParallelGC) {
325 return FLAG_IS_ERGO(UseParallelGC);
326 } else if (UseParallelOldGC) {
327 return FLAG_IS_ERGO(UseParallelOldGC);
328 } else if (UseConcMarkSweepGC) {
329 return FLAG_IS_ERGO(UseConcMarkSweepGC);
330 } else if (UseG1GC) {
331 return FLAG_IS_ERGO(UseG1GC);
332 }
333 ShouldNotReachHere();
334 return false;
335 WB_END
336
337 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
338 oop p = JNIHandles::resolve(obj);
339 #if INCLUDE_ALL_GCS
340 if (UseG1GC) {
341 G1CollectedHeap* g1 = G1CollectedHeap::heap();
342 const HeapRegion* hr = g1->heap_region_containing(p);
343 if (hr == NULL) {
344 return false;
345 }
346 return !(hr->is_young());
347 } else if (UseParallelGC) {
348 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
349 return !psh->is_in_young(p);
350 }
351 #endif // INCLUDE_ALL_GCS
352 GenCollectedHeap* gch = GenCollectedHeap::heap();
353 return !gch->is_in_young(p);
354 WB_END
355
356 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
357 oop p = JNIHandles::resolve(obj);
358 return p->size() * HeapWordSize;
359 WB_END
360
361 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
362 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
363 return (jlong)alignment;
364 WB_END
365
366 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
367 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
368 return (jlong)alignment;
369 WB_END
370
371 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
372 return Universe::heap()->supports_concurrent_phase_control();
373 WB_END
374
375 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
376 const char* const* phases = Universe::heap()->concurrent_phases();
377 jint nphases = 0;
378 for ( ; phases[nphases] != NULL; ++nphases) ;
379
380 ResourceMark rm(thread);
381 ThreadToNativeFromVM ttn(thread);
382 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
383 CHECK_JNI_EXCEPTION_(env, NULL);
384
385 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
386 CHECK_JNI_EXCEPTION_(env, NULL);
387
388 // If push fails, return with pending exception.
389 if (env->PushLocalFrame(nphases) < 0) return NULL;
390 for (jint i = 0; i < nphases; ++i) {
391 jstring phase = env->NewStringUTF(phases[i]);
392 CHECK_JNI_EXCEPTION_(env, NULL);
393 env->SetObjectArrayElement(result, i, phase);
394 CHECK_JNI_EXCEPTION_(env, NULL);
395 }
396 env->PopLocalFrame(NULL);
397
398 return result;
399 WB_END
400
401 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
402 Handle h_name(THREAD, JNIHandles::resolve(name));
403 ResourceMark rm;
404 const char* c_name = java_lang_String::as_utf8_string(h_name());
405 return Universe::heap()->request_concurrent_phase(c_name);
406 WB_END
407
408 #if INCLUDE_ALL_GCS
409 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
410 if (UseG1GC) {
411 G1CollectedHeap* g1 = G1CollectedHeap::heap();
412 oop result = JNIHandles::resolve(obj);
413 const HeapRegion* hr = g1->heap_region_containing(result);
414 return hr->is_humongous();
415 }
416 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
417 WB_END
418
419 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(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_humongous();
424 }
425 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
426 WB_END
427
428 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
429 if (UseG1GC) {
430 G1CollectedHeap* g1 = G1CollectedHeap::heap();
431 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
432 return hr->is_free();
433 }
434 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
435 WB_END
436
437 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
438 if (UseG1GC) {
439 G1CollectedHeap* g1 = G1CollectedHeap::heap();
440 size_t nr = g1->max_regions();
441 return (jlong)nr;
442 }
443 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
444 WB_END
445
446 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
447 if (UseG1GC) {
448 G1CollectedHeap* g1 = G1CollectedHeap::heap();
449 size_t nr = g1->num_free_regions();
450 return (jlong)nr;
451 }
452 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
453 WB_END
454
455 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
456 if (UseG1GC) {
457 G1CollectedHeap* g1h = G1CollectedHeap::heap();
458 return g1h->concurrent_mark()->cm_thread()->during_cycle();
459 }
460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
461 WB_END
462
463 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
464 if (UseG1GC) {
465 G1CollectedHeap* g1h = G1CollectedHeap::heap();
466 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
467 g1h->collect(GCCause::_wb_conc_mark);
468 return true;
469 }
470 return false;
471 }
472 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
473 WB_END
474
475 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
476 if (UseG1GC) {
477 return (jint)HeapRegion::GrainBytes;
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
483 #if INCLUDE_ALL_GCS
484 if (UseParallelGC) {
485 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
486 }
487 #endif // INCLUDE_ALL_GCS
488 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
489 WB_END
490
491 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
492 #if INCLUDE_ALL_GCS
493 if (UseParallelGC) {
494 return ParallelScavengeHeap::heap()->generation_alignment();
495 }
496 #endif // INCLUDE_ALL_GCS
497 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
498 WB_END
499
500 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
501 #if INCLUDE_ALL_GCS
502 if (UseG1GC) {
503 ResourceMark rm(THREAD);
504 G1CollectedHeap* g1h = G1CollectedHeap::heap();
505 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
506 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
507 return JNIHandles::make_local(env, h());
508 }
509 #endif // INCLUDE_ALL_GCS
510 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
511 WB_END
512
513 class OldRegionsLivenessClosure: public HeapRegionClosure {
514
515 private:
516 const int _liveness;
517 size_t _total_count;
518 size_t _total_memory;
519 size_t _total_memory_to_free;
520
521 public:
522 OldRegionsLivenessClosure(int liveness) :
523 _liveness(liveness),
524 _total_count(0),
525 _total_memory(0),
526 _total_memory_to_free(0) { }
527
528 size_t total_count() { return _total_count; }
529 size_t total_memory() { return _total_memory; }
530 size_t total_memory_to_free() { return _total_memory_to_free; }
531
532 bool do_heap_region(HeapRegion* r) {
533 if (r->is_old()) {
534 size_t prev_live = r->marked_bytes();
535 size_t live = r->live_bytes();
536 size_t size = r->used();
537 size_t reg_size = HeapRegion::GrainBytes;
538 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
539 _total_memory += size;
540 ++_total_count;
541 if (size == reg_size) {
542 // we don't include non-full regions since they are unlikely included in mixed gc
543 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
544 _total_memory_to_free += size - prev_live;
545 }
546 }
547 }
548 return false;
549 }
550 };
551
552
553 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
554 if (!UseG1GC) {
555 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
556 }
557 if (liveness < 0) {
558 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
559 }
560
561 G1CollectedHeap* g1h = G1CollectedHeap::heap();
562 OldRegionsLivenessClosure rli(liveness);
563 g1h->heap_region_iterate(&rli);
564
565 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
566 result->long_at_put(0, rli.total_count());
567 result->long_at_put(1, rli.total_memory());
568 result->long_at_put(2, rli.total_memory_to_free());
569 return (jlongArray) JNIHandles::make_local(env, result);
570 WB_END
571
572 #endif // INCLUDE_ALL_GCS
573
574 #if INCLUDE_NMT
575 // Alloc memory using the test memory type so that we can use that to see if
576 // NMT picks it up correctly
577 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
578 jlong addr = 0;
579 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
580 return addr;
581 WB_END
582
583 // Alloc memory with pseudo call stack. The test can create psudo malloc
584 // allocation site to stress the malloc tracking.
585 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
586 address pc = (address)(size_t)pseudo_stack;
587 NativeCallStack stack(&pc, 1);
588 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
589 WB_END
590
591 // Free the memory allocated by NMTAllocTest
592 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
593 os::free((void*)(uintptr_t)mem);
594 WB_END
595
596 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
597 jlong addr = 0;
598
599 addr = (jlong)(uintptr_t)os::reserve_memory(size);
600 MemTracker::record_virtual_memory_type((address)addr, mtTest);
601
602 return addr;
603 WB_END
604
605 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
606 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
607 MemTracker::record_virtual_memory_type((address)addr, mtTest);
608
609 return addr;
610 WB_END
611
612 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
613 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
614 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
615 WB_END
616
617 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
618 os::uncommit_memory((char *)(uintptr_t)addr, size);
619 WB_END
620
621 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
622 os::release_memory((char *)(uintptr_t)addr, size);
623 WB_END
624
625 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
626 // Test that we can downgrade NMT levels but not upgrade them.
627 if (MemTracker::tracking_level() == NMT_off) {
628 MemTracker::transition_to(NMT_off);
629 return MemTracker::tracking_level() == NMT_off;
630 } else {
631 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
632 MemTracker::transition_to(NMT_summary);
633 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
634
635 // Can't go to detail once NMT is set to summary.
636 MemTracker::transition_to(NMT_detail);
637 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
638
639 // Shutdown sets tracking level to minimal.
640 MemTracker::shutdown();
641 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
642
643 // Once the tracking level is minimal, we cannot increase to summary.
644 // The code ignores this request instead of asserting because if the malloc site
645 // table overflows in another thread, it tries to change the code to summary.
646 MemTracker::transition_to(NMT_summary);
647 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
648
649 // Really can never go up to detail, verify that the code would never do this.
650 MemTracker::transition_to(NMT_detail);
651 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
652 return MemTracker::tracking_level() == NMT_minimal;
653 }
654 WB_END
655
656 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
657 int hash_size = MallocSiteTable::hash_buckets();
658 assert(hash_size > 0, "NMT hash_size should be > 0");
659 return (jint)hash_size;
660 WB_END
661 #endif // INCLUDE_NMT
662
663 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
664 assert(method != NULL, "method should not be null");
665 ThreadToNativeFromVM ttn(thread);
666 return env->FromReflectedMethod(method);
667 }
668
669 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
670 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
671 private:
672 int _result;
673 const bool _make_not_entrant;
674 public:
675 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
676 _result(0), _make_not_entrant(make_not_entrant) { }
677 int result() const { return _result; }
678
679 void doit() {
680 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
681 if (t->has_last_Java_frame()) {
682 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
683 frame* f = fst.current();
684 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
685 RegisterMap* reg_map = fst.register_map();
686 Deoptimization::deoptimize(t, *f, reg_map);
687 if (_make_not_entrant) {
688 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
689 assert(cm != NULL, "sanity check");
690 cm->make_not_entrant();
691 }
692 ++_result;
693 }
694 }
695 }
696 }
697 }
698 };
699
700 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
701 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
702 VMThread::execute(&op);
703 return op.result();
704 WB_END
705
706 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
707 MutexLockerEx mu(Compile_lock);
708 CodeCache::mark_all_nmethods_for_deoptimization();
709 VM_Deoptimize op;
710 VMThread::execute(&op);
711 WB_END
712
713 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
714 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
715 int result = 0;
716 CHECK_JNI_EXCEPTION_(env, result);
717 MutexLockerEx mu(Compile_lock);
718 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
719 if (is_osr) {
720 result += mh->mark_osr_nmethods();
721 } else if (mh->code() != NULL) {
722 mh->code()->mark_for_deoptimization();
723 ++result;
724 }
725 result += CodeCache::mark_for_deoptimization(mh());
726 if (result > 0) {
727 VM_Deoptimize op;
728 VMThread::execute(&op);
729 }
730 return result;
731 WB_END
732
733 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
734 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
735 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
736 MutexLockerEx mu(Compile_lock);
737 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
738 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
739 if (code == NULL) {
740 return JNI_FALSE;
741 }
742 return (code->is_alive() && !code->is_marked_for_deoptimization());
743 WB_END
744
745 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
746 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
747 return false;
748 }
749 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
750 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
751 MutexLockerEx mu(Compile_lock);
752 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
753 if (is_osr) {
754 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
755 } else {
756 return CompilationPolicy::can_be_compiled(mh, comp_level);
757 }
758 WB_END
759
760 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
761 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
762 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
763 MutexLockerEx mu(Compile_lock);
764 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
765 return mh->queued_for_compilation();
766 WB_END
767
768 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
769 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
770 return false; // Intrinsic is not available on a non-existent compilation level.
771 }
772 jmethodID method_id, compilation_context_id;
773 method_id = reflected_method_to_jmid(thread, env, method);
774 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
775 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
776
777 DirectiveSet* directive;
778 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
779 assert(comp != NULL, "compiler not available");
780 if (compilation_context != NULL) {
781 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
782 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
783 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
784 directive = DirectivesStack::getMatchingDirective(cch, comp);
785 } else {
786 // Calling with NULL matches default directive
787 directive = DirectivesStack::getDefaultDirective(comp);
788 }
789 bool result = comp->is_intrinsic_available(mh, directive);
790 DirectivesStack::release(directive);
791 return result;
792 WB_END
793
794 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
795 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
796 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
797 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
798 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
799 return (code != NULL ? code->comp_level() : CompLevel_none);
800 WB_END
801
802 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
803 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
804 CHECK_JNI_EXCEPTION(env);
805 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
806 if (is_osr) {
807 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
808 } else {
809 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
810 }
811 WB_END
812
813 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
814 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
815 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
816 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
817 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
818 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
819 WB_END
820
821 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(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->dont_inline();
826 mh->set_dont_inline(value == JNI_TRUE);
827 return result;
828 WB_END
829
830 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
831 if (comp_level == CompLevel_any) {
832 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
833 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
834 } else {
835 return CompileBroker::queue_size(comp_level);
836 }
837 WB_END
838
839 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
840 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
841 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
842 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
843 bool result = mh->force_inline();
844 mh->set_force_inline(value == JNI_TRUE);
845 return result;
846 WB_END
847
848 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
849 // Screen for unavailable/bad comp level or null method
850 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) ||
851 CompileBroker::compiler(comp_level) == NULL) {
852 return false;
853 }
854 methodHandle mh(THREAD, method);
855 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
856 MutexLockerEx mu(Compile_lock);
857 return (mh->queued_for_compilation() || nm != NULL);
858 }
859
860 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
861 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
862 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
863 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
864 WB_END
865
866 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
867 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
868 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
869 WB_END
870
871 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
872 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
873 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
874
875 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
876 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
877 bool result = directive->PrintAssemblyOption;
878 DirectivesStack::release(directive);
879
880 return result;
881 WB_END
882
883 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
884 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
885 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
886
887 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
888
889 ResourceMark rm;
890 const char* error_msg = NULL;
891 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
892 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
893
894 if (m == NULL) {
895 assert(error_msg != NULL, "Always have an error message");
896 tty->print_cr("Got error: %s", error_msg);
897 return -1; // Pattern failed
898 }
899
900 // Pattern works - now check if it matches
901 int result;
902 if (m->match(mh, InlineMatcher::force_inline)) {
903 result = 2; // Force inline match
904 } else if (m->match(mh, InlineMatcher::dont_inline)) {
905 result = 1; // Dont inline match
906 } else {
907 result = 0; // No match
908 }
909 delete m;
910 return result;
911 WB_END
912
913 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
914 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
915 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
916
917 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
918
919 ResourceMark rm;
920 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
921
922 const char* error_msg = NULL;
923
924 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
925 if (m == NULL) {
926 assert(error_msg != NULL, "Must have error_msg");
927 tty->print_cr("Got error: %s", error_msg);
928 return -1;
929 }
930
931 // Pattern works - now check if it matches
932 int result = m->matches(mh);
933 delete m;
934 assert(result == 0 || result == 1, "Result out of range");
935 return result;
936 WB_END
937
938 static AlwaysFalseClosure always_false;
939
940 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
941 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
942 CHECK_JNI_EXCEPTION(env);
943 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
944 MutexLockerEx mu(Compile_lock);
945 MethodData* mdo = mh->method_data();
946 MethodCounters* mcs = mh->method_counters();
947
948 if (mdo != NULL) {
949 mdo->init();
950 ResourceMark rm;
951 int arg_count = mdo->method()->size_of_parameters();
952 for (int i = 0; i < arg_count; i++) {
953 mdo->set_arg_modified(i, 0);
954 }
955 MutexLockerEx mu(mdo->extra_data_lock());
956 mdo->clean_method_data(&always_false);
957 }
958
959 mh->clear_not_c1_compilable();
960 mh->clear_not_c2_compilable();
961 mh->clear_not_c2_osr_compilable();
962 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
963 if (mcs != NULL) {
964 mcs->backedge_counter()->init();
965 mcs->invocation_counter()->init();
966 mcs->set_interpreter_invocation_count(0);
967 mcs->set_interpreter_throwout_count(0);
968
969 #ifdef TIERED
970 mcs->set_rate(0.0F);
971 mh->set_prev_event_count(0);
972 mh->set_prev_time(0);
973 #endif
974 }
975 WB_END
976
977 template <typename T>
978 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
979 if (name == NULL) {
980 return false;
981 }
982 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
983 const char* flag_name = env->GetStringUTFChars(name, NULL);
984 CHECK_JNI_EXCEPTION_(env, false);
985 Flag::Error result = (*TAt)(flag_name, value, true, true);
986 env->ReleaseStringUTFChars(name, flag_name);
987 return (result == Flag::SUCCESS);
988 }
989
990 template <typename T>
991 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
992 if (name == NULL) {
993 return false;
994 }
995 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
996 const char* flag_name = env->GetStringUTFChars(name, NULL);
997 CHECK_JNI_EXCEPTION_(env, false);
998 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
999 env->ReleaseStringUTFChars(name, flag_name);
1000 return (result == Flag::SUCCESS);
1001 }
1002
1003 template <typename T>
1004 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1005 ResourceMark rm(thread);
1006 jclass clazz = env->FindClass(name->as_C_string());
1007 CHECK_JNI_EXCEPTION_(env, NULL);
1008 jmethodID methodID = env->GetStaticMethodID(clazz,
1009 vmSymbols::valueOf_name()->as_C_string(),
1010 sig->as_C_string());
1011 CHECK_JNI_EXCEPTION_(env, NULL);
1012 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1013 CHECK_JNI_EXCEPTION_(env, NULL);
1014 return result;
1015 }
1016
1017 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1018 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1019 }
1020 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1021 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1022 }
1023 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1024 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1025 }
1026 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1027 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1028 }*/
1029 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1030 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1031 }
1032
1033 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1034 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1035 const char* flag_name = env->GetStringUTFChars(name, NULL);
1036 CHECK_JNI_EXCEPTION_(env, NULL);
1037 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1038 env->ReleaseStringUTFChars(name, flag_name);
1039 return result;
1040 }
1041
1042 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1043 Flag* flag = getVMFlag(thread, env, name);
1044 return (flag != NULL) && flag->is_constant_in_binary();
1045 WB_END
1046
1047 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1048 Flag* flag = getVMFlag(thread, env, name);
1049 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1050 WB_END
1051
1052 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1053 bool result;
1054 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1055 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1056 return booleanBox(thread, env, result);
1057 }
1058 return NULL;
1059 WB_END
1060
1061 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1062 int result;
1063 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
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_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1071 uint result;
1072 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
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_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1080 intx result;
1081 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
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_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1089 uintx result;
1090 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
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_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1098 uint64_t result;
1099 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1100 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1101 return longBox(thread, env, result);
1102 }
1103 return NULL;
1104 WB_END
1105
1106 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1107 uintx result;
1108 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1109 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1110 return longBox(thread, env, result);
1111 }
1112 return NULL;
1113 WB_END
1114
1115 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1116 double result;
1117 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1118 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1119 return doubleBox(thread, env, result);
1120 }
1121 return NULL;
1122 WB_END
1123
1124 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1125 ccstr ccstrResult;
1126 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1127 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1128 jstring result = env->NewStringUTF(ccstrResult);
1129 CHECK_JNI_EXCEPTION_(env, NULL);
1130 return result;
1131 }
1132 return NULL;
1133 WB_END
1134
1135 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1136 bool result = value == JNI_TRUE ? true : false;
1137 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1138 WB_END
1139
1140 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1141 int result = value;
1142 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1143 WB_END
1144
1145 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1146 uint result = value;
1147 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1148 WB_END
1149
1150 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1151 intx result = value;
1152 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1153 WB_END
1154
1155 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1156 uintx result = value;
1157 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1158 WB_END
1159
1160 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1161 uint64_t result = value;
1162 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1163 WB_END
1164
1165 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1166 size_t result = value;
1167 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1168 WB_END
1169
1170 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1171 double result = value;
1172 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1173 WB_END
1174
1175 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1176 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1177 const char* ccstrValue;
1178 if (value == NULL) {
1179 ccstrValue = NULL;
1180 }
1181 else {
1182 ccstrValue = env->GetStringUTFChars(value, NULL);
1183 CHECK_JNI_EXCEPTION(env);
1184 }
1185 ccstr ccstrResult = ccstrValue;
1186 bool needFree;
1187 {
1188 ThreadInVMfromNative ttvfn(thread); // back to VM
1189 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1190 }
1191 if (value != NULL) {
1192 env->ReleaseStringUTFChars(value, ccstrValue);
1193 }
1194 if (needFree) {
1195 FREE_C_HEAP_ARRAY(char, ccstrResult);
1196 }
1197 WB_END
1198
1199 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1200 WhiteBox::compilation_locked = true;
1201 WB_END
1202
1203 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1204 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1205 WhiteBox::compilation_locked = false;
1206 mo.notify_all();
1207 WB_END
1208
1209 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1210 // Force a code cache sweep and block until it finished
1211 NMethodSweeper::force_sweep();
1212 WB_END
1213
1214 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1215 ResourceMark rm(THREAD);
1216 int len;
1217 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1218 return (StringTable::lookup(name, len) != NULL);
1219 WB_END
1220
1221 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1222 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
1223 Universe::heap()->collect(GCCause::_wb_full_gc);
1224 #if INCLUDE_ALL_GCS
1225 if (UseG1GC) {
1226 // Needs to be cleared explicitly for G1
1227 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
1228 }
1229 #endif // INCLUDE_ALL_GCS
1230 WB_END
1231
1232 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1233 Universe::heap()->collect(GCCause::_wb_young_gc);
1234 WB_END
1235
1236 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1237 // static+volatile in order to force the read to happen
1238 // (not be eliminated by the compiler)
1239 static char c;
1240 static volatile char* p;
1241
1242 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1243 if (p == NULL) {
1244 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1245 }
1246
1247 c = *p;
1248 WB_END
1249
1250 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1251 const char* features = VM_Version::features_string();
1252 ThreadToNativeFromVM ttn(thread);
1253 jstring features_string = env->NewStringUTF(features);
1254
1255 CHECK_JNI_EXCEPTION_(env, NULL);
1256
1257 return features_string;
1258 WB_END
1259
1260 int WhiteBox::get_blob_type(const CodeBlob* code) {
1261 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1262 if (code->is_aot()) {
1263 return -1;
1264 }
1265 return CodeCache::get_code_heap(code)->code_blob_type();
1266 }
1267
1268 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1269 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1270 return CodeCache::get_code_heap(blob_type);
1271 }
1272
1273 struct CodeBlobStub {
1274 CodeBlobStub(const CodeBlob* blob) :
1275 name(os::strdup(blob->name())),
1276 size(blob->size()),
1277 blob_type(WhiteBox::get_blob_type(blob)),
1278 address((jlong) blob) { }
1279 ~CodeBlobStub() { os::free((void*) name); }
1280 const char* const name;
1281 const jint size;
1282 const jint blob_type;
1283 const jlong address;
1284 };
1285
1286 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1287 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1288 CHECK_JNI_EXCEPTION_(env, NULL);
1289 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1290
1291 jstring name = env->NewStringUTF(cb->name);
1292 CHECK_JNI_EXCEPTION_(env, NULL);
1293 env->SetObjectArrayElement(result, 0, name);
1294
1295 jobject obj = integerBox(thread, env, cb->size);
1296 CHECK_JNI_EXCEPTION_(env, NULL);
1297 env->SetObjectArrayElement(result, 1, obj);
1298
1299 obj = integerBox(thread, env, cb->blob_type);
1300 CHECK_JNI_EXCEPTION_(env, NULL);
1301 env->SetObjectArrayElement(result, 2, obj);
1302
1303 obj = longBox(thread, env, cb->address);
1304 CHECK_JNI_EXCEPTION_(env, NULL);
1305 env->SetObjectArrayElement(result, 3, obj);
1306
1307 return result;
1308 }
1309
1310 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1311 ResourceMark rm(THREAD);
1312 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1313 CHECK_JNI_EXCEPTION_(env, NULL);
1314 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1315 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1316 jobjectArray result = NULL;
1317 if (code == NULL) {
1318 return result;
1319 }
1320 int comp_level = code->comp_level();
1321 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1322
1323 ThreadToNativeFromVM ttn(thread);
1324 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1325 CHECK_JNI_EXCEPTION_(env, NULL);
1326 result = env->NewObjectArray(5, clazz, NULL);
1327 if (result == NULL) {
1328 return result;
1329 }
1330
1331 CodeBlobStub stub(code);
1332 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1333 CHECK_JNI_EXCEPTION_(env, NULL);
1334 env->SetObjectArrayElement(result, 0, codeBlob);
1335
1336 jobject level = integerBox(thread, env, comp_level);
1337 CHECK_JNI_EXCEPTION_(env, NULL);
1338 env->SetObjectArrayElement(result, 1, level);
1339
1340 jbyteArray insts = env->NewByteArray(insts_size);
1341 CHECK_JNI_EXCEPTION_(env, NULL);
1342 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1343 env->SetObjectArrayElement(result, 2, insts);
1344
1345 jobject id = integerBox(thread, env, code->compile_id());
1346 CHECK_JNI_EXCEPTION_(env, NULL);
1347 env->SetObjectArrayElement(result, 3, id);
1348
1349 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1350 CHECK_JNI_EXCEPTION_(env, NULL);
1351 env->SetObjectArrayElement(result, 4, entry_point);
1352
1353 return result;
1354 WB_END
1355
1356 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1357 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1358 BufferBlob* blob;
1359 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1360 if (full_size < size) {
1361 full_size += align_up(size - full_size, oopSize);
1362 }
1363 {
1364 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1365 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1366 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1367 }
1368 // Track memory usage statistic after releasing CodeCache_lock
1369 MemoryService::track_code_cache_memory_usage();
1370 return blob;
1371 }
1372
1373 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1374 if (size < 0) {
1375 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1376 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1377 }
1378 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1379 WB_END
1380
1381 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1382 if (addr == 0) {
1383 return;
1384 }
1385 BufferBlob::free((BufferBlob*) addr);
1386 WB_END
1387
1388 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1389 ResourceMark rm;
1390 GrowableArray<CodeBlobStub*> blobs;
1391 {
1392 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1393 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1394 if (heap == NULL) {
1395 return NULL;
1396 }
1397 for (CodeBlob* cb = (CodeBlob*) heap->first();
1398 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1399 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1400 new (stub) CodeBlobStub(cb);
1401 blobs.append(stub);
1402 }
1403 }
1404 if (blobs.length() == 0) {
1405 return NULL;
1406 }
1407 ThreadToNativeFromVM ttn(thread);
1408 jobjectArray result = NULL;
1409 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1410 CHECK_JNI_EXCEPTION_(env, NULL);
1411 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1412 CHECK_JNI_EXCEPTION_(env, NULL);
1413 if (result == NULL) {
1414 return result;
1415 }
1416 int i = 0;
1417 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1418 it != blobs.end(); ++it) {
1419 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1420 CHECK_JNI_EXCEPTION_(env, NULL);
1421 env->SetObjectArrayElement(result, i, obj);
1422 CHECK_JNI_EXCEPTION_(env, NULL);
1423 ++i;
1424 }
1425 return result;
1426 WB_END
1427
1428 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1429 return CompileBroker::get_compilation_activity_mode();
1430 WB_END
1431
1432 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1433 if (addr == 0) {
1434 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1435 "WB_GetCodeBlob: addr is null");
1436 }
1437 ThreadToNativeFromVM ttn(thread);
1438 CodeBlobStub stub((CodeBlob*) addr);
1439 return codeBlob2objectArray(thread, env, &stub);
1440 WB_END
1441
1442 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1443 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1444 CHECK_JNI_EXCEPTION_(env, 0);
1445 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1446 return (jlong) mh->method_data();
1447 WB_END
1448
1449 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1450 return (jlong) Thread::current()->stack_size();
1451 WB_END
1452
1453 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1454 JavaThread* t = JavaThread::current();
1455 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1456 WB_END
1457
1458
1459 int WhiteBox::array_bytes_to_length(size_t bytes) {
1460 return Array<u1>::bytes_to_length(bytes);
1461 }
1462
1463 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1464 if (size < 0) {
1465 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1466 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1467 }
1468
1469 oop class_loader_oop = JNIHandles::resolve(class_loader);
1470 ClassLoaderData* cld = class_loader_oop != NULL
1471 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1472 : ClassLoaderData::the_null_class_loader_data();
1473
1474 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1475
1476 return (jlong)(uintptr_t)metadata;
1477 WB_END
1478
1479 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1480 oop class_loader_oop = JNIHandles::resolve(class_loader);
1481 ClassLoaderData* cld = class_loader_oop != NULL
1482 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1483 : ClassLoaderData::the_null_class_loader_data();
1484
1485 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1486 WB_END
1487
1488 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1489 jstring version, jstring location, jobjectArray packages))
1490 ResourceMark rm(THREAD);
1491
1492 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1493 objArrayHandle packages_h(THREAD, packages_oop);
1494 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1495
1496 char** pkgs = NULL;
1497 if (num_packages > 0) {
1498 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1499 for (int x = 0; x < num_packages; x++) {
1500 oop pkg_str = packages_h->obj_at(x);
1501 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1502 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1503 err_msg("Bad package name"));
1504 }
1505 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1506 }
1507 }
1508 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1509 WB_END
1510
1511 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
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_qualified(from_module, package_name, to_module, CHECK);
1518 WB_END
1519
1520 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1521 ResourceMark rm(THREAD);
1522 char* package_name = NULL;
1523 if (package != NULL) {
1524 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1525 }
1526 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1527 WB_END
1528
1529 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1530 ResourceMark rm(THREAD);
1531 char* package_name = NULL;
1532 if (package != NULL) {
1533 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1534 }
1535 Modules::add_module_exports(module, package_name, NULL, CHECK);
1536 WB_END
1537
1538 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1539 Modules::add_reads_module(from_module, source_module, CHECK);
1540 WB_END
1541
1542 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1543 if (inc < 0) {
1544 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1545 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1546 }
1547
1548 jlong max_size_t = (jlong) ((size_t) -1);
1549 if (inc > max_size_t) {
1550 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1551 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1552 }
1553
1554 size_t new_cap_until_GC = 0;
1555 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1556 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1557 if (!success) {
1558 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1559 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1560 "due to contention with another thread");
1561 }
1562 return (jlong) new_cap_until_GC;
1563 WB_END
1564
1565 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1566 return (jlong) MetaspaceGC::capacity_until_GC();
1567 WB_END
1568
1569 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1570 return MetaspaceGC::should_concurrent_collect();
1571 WB_END
1572
1573 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1574 return (jlong)Metaspace::reserve_alignment();
1575 WB_END
1576
1577 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1578 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1579 Monitor::_safepoint_check_always :
1580 Monitor::_safepoint_check_never;
1581 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1582 attemptedNoSafepointValue == JNI_TRUE);
1583 WB_END
1584
1585 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1586 oop obj_oop = JNIHandles::resolve(obj);
1587 return (jboolean) obj_oop->mark()->has_monitor();
1588 WB_END
1589
1590 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1591 VM_ForceSafepoint force_safepoint_op;
1592 VMThread::execute(&force_safepoint_op);
1593 WB_END
1594
1595 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1596 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1597 return (jlong) ik->constants();
1598 WB_END
1599
1600 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1601 return ConstantPool::CPCACHE_INDEX_TAG;
1602 WB_END
1603
1604 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1605 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1606 ConstantPool* cp = ik->constants();
1607 if (cp->cache() == NULL) {
1608 return -1;
1609 }
1610 return cp->cache()->length();
1611 WB_END
1612
1613 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1614 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1615 ConstantPool* cp = ik->constants();
1616 if (cp->cache() == NULL) {
1617 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1618 }
1619 jint cpci = index;
1620 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1621 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1622 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1623 }
1624 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1625 return cpi;
1626 WB_END
1627
1628 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1629 return ConstantPool::encode_invokedynamic_index(index);
1630 WB_END
1631
1632 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1633 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1634 VMThread::execute(&clear_ics);
1635 WB_END
1636
1637 template <typename T>
1638 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1639 assert(value != NULL, "sanity");
1640 if (method == NULL || name == NULL) {
1641 return false;
1642 }
1643 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1644 CHECK_JNI_EXCEPTION_(env, false);
1645 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1646 // can't be in VM when we call JNI
1647 ThreadToNativeFromVM ttnfv(thread);
1648 const char* flag_name = env->GetStringUTFChars(name, NULL);
1649 CHECK_JNI_EXCEPTION_(env, false);
1650 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1651 env->ReleaseStringUTFChars(name, flag_name);
1652 return result;
1653 }
1654
1655 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1656 bool result;
1657 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1658 // can't be in VM when we call JNI
1659 ThreadToNativeFromVM ttnfv(thread);
1660 return booleanBox(thread, env, result);
1661 }
1662 return NULL;
1663 WB_END
1664
1665 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1666 intx result;
1667 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1668 // can't be in VM when we call JNI
1669 ThreadToNativeFromVM ttnfv(thread);
1670 return longBox(thread, env, result);
1671 }
1672 return NULL;
1673 WB_END
1674
1675 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1676 uintx result;
1677 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1678 // can't be in VM when we call JNI
1679 ThreadToNativeFromVM ttnfv(thread);
1680 return longBox(thread, env, result);
1681 }
1682 return NULL;
1683 WB_END
1684
1685 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1686 double result;
1687 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1688 // can't be in VM when we call JNI
1689 ThreadToNativeFromVM ttnfv(thread);
1690 return doubleBox(thread, env, result);
1691 }
1692 return NULL;
1693 WB_END
1694
1695 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1696 ccstr ccstrResult;
1697 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1698 // can't be in VM when we call JNI
1699 ThreadToNativeFromVM ttnfv(thread);
1700 jstring result = env->NewStringUTF(ccstrResult);
1701 CHECK_JNI_EXCEPTION_(env, NULL);
1702 return result;
1703 }
1704 return NULL;
1705 WB_END
1706
1707 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1708 oop obj_oop = JNIHandles::resolve(obj);
1709 return oopDesc::is_archive_object(obj_oop);
1710 WB_END
1711
1712 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1713 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1714 WB_END
1715
1716 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1717 return !StringTable::shared_string_mapped();
1718 WB_END
1719
1720 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1721 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1722 if (k->is_instance_klass()) {
1723 InstanceKlass *ik = InstanceKlass::cast(k);
1724 ConstantPool *cp = ik->constants();
1725 objArrayOop refs = cp->resolved_references();
1726 return (jobject)JNIHandles::make_local(env, refs);
1727 } else {
1728 return NULL;
1729 }
1730 WB_END
1731
1732 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1733 return MetaspaceShared::open_archive_heap_region_mapped();
1734 WB_END
1735
1736 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1737 #if INCLUDE_CDS
1738 # ifdef _LP64
1739 if (!UseCompressedOops || !UseCompressedClassPointers) {
1740 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1741 return false;
1742 }
1743 # endif // _LP64
1744 return true;
1745 #else
1746 return false;
1747 #endif // INCLUDE_CDS
1748 WB_END
1749
1750 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1751 return MetaspaceShared::is_heap_object_archiving_allowed();
1752 WB_END
1753
1754
1755 #if INCLUDE_CDS
1756
1757 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1758 ResourceMark rm;
1759 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1760 int result = CDSOffsets::find_offset(c_name);
1761 return (jint)result;
1762 WB_END
1763
1764 #endif // INCLUDE_CDS
1765
1766 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1767 class TraceSelfClosure : public ThreadClosure {
1768 jint _num_threads_completed;
1769
1770 void do_thread(Thread* th) {
1771 assert(th->is_Java_thread(), "sanity");
1772 JavaThread* jt = (JavaThread*)th;
1773 ResourceMark rm;
1774
1775 jt->print_on(tty);
1776 jt->print_stack_on(tty);
1777 tty->cr();
1778 Atomic::inc(&_num_threads_completed);
1779 }
1780
1781 public:
1782 TraceSelfClosure() : _num_threads_completed(0) {}
1783
1784 jint num_threads_completed() const { return _num_threads_completed; }
1785 };
1786 TraceSelfClosure tsc;
1787
1788 if (all_threads) {
1789 Handshake::execute(&tsc);
1790 } else {
1791 oop thread_oop = JNIHandles::resolve(thread_handle);
1792 if (thread_oop != NULL) {
1793 JavaThread* target = java_lang_Thread::thread(thread_oop);
1794 Handshake::execute(&tsc, target);
1795 }
1796 }
1797 return tsc.num_threads_completed();
1798 WB_END
1799
1800 //Some convenience methods to deal with objects from java
1801 int WhiteBox::offset_for_field(const char* field_name, oop object,
1802 Symbol* signature_symbol) {
1803 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1804 Thread* THREAD = Thread::current();
1805
1806 //Get the class of our object
1807 Klass* arg_klass = object->klass();
1808 //Turn it into an instance-klass
1809 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1810
1811 //Create symbols to look for in the class
1812 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1813 THREAD);
1814
1815 //To be filled in with an offset of the field we're looking for
1816 fieldDescriptor fd;
1817
1818 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1819 if (res == NULL) {
1820 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1821 name_symbol->as_C_string());
1822 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1823 }
1824
1825 //fetch the field at the offset we've found
1826 int dest_offset = fd.offset();
1827
1828 return dest_offset;
1829 }
1830
1831
1832 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1833 int offset = offset_for_field(field_name, object,
1834 vmSymbols::string_signature());
1835 oop string = object->obj_field(offset);
1836 if (string == NULL) {
1837 return NULL;
1838 }
1839 const char* ret = java_lang_String::as_utf8_string(string);
1840 return ret;
1841 }
1842
1843 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1844 int offset =
1845 offset_for_field(field_name, object, vmSymbols::bool_signature());
1846 bool ret = (object->bool_field(offset) == JNI_TRUE);
1847 return ret;
1848 }
1849
1850 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1851 ResourceMark rm;
1852 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1853
1854 // one by one registration natives for exception catching
1855 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1856 CHECK_JNI_EXCEPTION(env);
1857 for (int i = 0, n = method_count; i < n; ++i) {
1858 // Skip dummy entries
1859 if (method_array[i].fnPtr == NULL) continue;
1860 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1861 jthrowable throwable_obj = env->ExceptionOccurred();
1862 if (throwable_obj != NULL) {
1863 env->ExceptionClear();
1864 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1865 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1866 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1867 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1868 method_array[i].name, method_array[i].signature);
1869 }
1870 } else {
1871 // Registration failed unexpectedly.
1872 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1873 method_array[i].name, method_array[i].signature);
1874 env->UnregisterNatives(wbclass);
1875 break;
1876 }
1877 }
1878 }
1879 }
1880
1881 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1882 // can't be in VM when we call JNI
1883 ThreadToNativeFromVM ttnfv(thread);
1884 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1885 CHECK_JNI_EXCEPTION_(env, 0);
1886 int ret;
1887 {
1888 ThreadInVMfromNative ttvfn(thread); // back to VM
1889 ret = DirectivesParser::parse_string(dir, tty);
1890 }
1891 env->ReleaseStringUTFChars(compDirect, dir);
1892 // -1 for error parsing directive. Return 0 as number of directives added.
1893 if (ret == -1) {
1894 ret = 0;
1895 }
1896 return (jint) ret;
1897 WB_END
1898
1899 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1900 DirectivesStack::pop(count);
1901 WB_END
1902
1903 // Checks that the library libfile has the noexecstack bit set.
1904 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1905 jboolean ret = false;
1906 #ifdef LINUX
1907 // Can't be in VM when we call JNI.
1908 ThreadToNativeFromVM ttnfv(thread);
1909 const char* lf = env->GetStringUTFChars(libfile, NULL);
1910 CHECK_JNI_EXCEPTION_(env, 0);
1911 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1912 env->ReleaseStringUTFChars(libfile, lf);
1913 #endif
1914 return ret;
1915 WB_END
1916
1917 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1918 LINUX_ONLY(return OSContainer::is_containerized();)
1919 return false;
1920 WB_END
1921
1922 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1923 os::print_os_info(tty);
1924 WB_END
1925
1926 // Elf decoder
1927 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1928 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1929 ElfFile::_do_not_cache_elf_section = true;
1930 #endif
1931 WB_END
1932
1933
1934 #define CC (char*)
1935
1936 static JNINativeMethod methods[] = {
1937 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1938 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1939 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1940 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1941 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1942 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1943 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1944 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1945 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1946 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1947 {CC"parseCommandLine0",
1948 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1949 (void*) &WB_ParseCommandLine
1950 },
1951 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1952 (void*)&WB_AddToBootstrapClassLoaderSearch},
1953 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1954 (void*)&WB_AddToSystemClassLoaderSearch},
1955 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1956 (void*)&WB_GetCompressedOopsMaxHeapSize},
1957 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1958 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1959 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1960 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1961 #if INCLUDE_CDS
1962 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1963 #endif
1964 #if INCLUDE_ALL_GCS
1965 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1966 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1967 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1968 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1969 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1970 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1971 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1972 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1973 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1974 (void*)&WB_G1AuxiliaryMemoryUsage },
1975 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1976 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1977 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1978 #endif // INCLUDE_ALL_GCS
1979 #if INCLUDE_NMT
1980 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1981 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1982 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1983 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1984 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
1985 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1986 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1987 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1988 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1989 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1990 #endif // INCLUDE_NMT
1991 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1992 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1993 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1994 (void*)&WB_DeoptimizeMethod },
1995 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1996 (void*)&WB_IsMethodCompiled },
1997 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1998 (void*)&WB_IsMethodCompilable},
1999 {CC"isMethodQueuedForCompilation0",
2000 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2001 {CC"isIntrinsicAvailable0",
2002 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2003 (void*)&WB_IsIntrinsicAvailable},
2004 {CC"makeMethodNotCompilable0",
2005 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2006 {CC"testSetDontInlineMethod0",
2007 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2008 {CC"getMethodCompilationLevel0",
2009 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2010 {CC"getMethodEntryBci0",
2011 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2012 {CC"getCompileQueueSize",
2013 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2014 {CC"testSetForceInlineMethod0",
2015 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2016 {CC"enqueueMethodForCompilation0",
2017 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2018 {CC"enqueueInitializerForCompilation0",
2019 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2020 {CC"clearMethodState0",
2021 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2022 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2023 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2024 {CC"matchesMethod",
2025 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2026 (void*)&WB_MatchesMethod},
2027 {CC"matchesInline",
2028 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2029 (void*)&WB_MatchesInline},
2030 {CC"shouldPrintAssembly",
2031 CC"(Ljava/lang/reflect/Executable;I)Z",
2032 (void*)&WB_ShouldPrintAssembly},
2033
2034 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2035 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2036 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2037 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2038 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2039 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2040 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2041 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2042 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2043 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2044 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2045 (void*)&WB_SetStringVMFlag},
2046 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2047 (void*)&WB_GetBooleanVMFlag},
2048 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2049 (void*)&WB_GetIntVMFlag},
2050 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2051 (void*)&WB_GetUintVMFlag},
2052 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2053 (void*)&WB_GetIntxVMFlag},
2054 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2055 (void*)&WB_GetUintxVMFlag},
2056 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2057 (void*)&WB_GetUint64VMFlag},
2058 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2059 (void*)&WB_GetSizeTVMFlag},
2060 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2061 (void*)&WB_GetDoubleVMFlag},
2062 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2063 (void*)&WB_GetStringVMFlag},
2064 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2065 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2066 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2067 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2068 {CC"allocateMetaspace",
2069 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2070 {CC"freeMetaspace",
2071 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2072 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2073 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2074 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2075 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2076 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2077 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2078 (void*)&WB_GetNMethod },
2079 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2080 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2081 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2082 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2083 {CC"getCompilationActivityMode",
2084 CC"()I", (void*)&WB_GetCompilationActivityMode},
2085 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2086 (void*)&WB_GetMethodData },
2087 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2088 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2089 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2090 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2091 (void*)&WB_DefineModule },
2092 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2093 (void*)&WB_AddModuleExports },
2094 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2095 (void*)&WB_AddReadsModule },
2096 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2097 (void*)&WB_AddModuleExportsToAllUnnamed },
2098 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2099 (void*)&WB_AddModuleExportsToAll },
2100 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2101 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2102 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2103 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2104 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2105 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2106 {CC"remapInstructionOperandFromCPCache0",
2107 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2108 {CC"encodeConstantPoolIndyIndex0",
2109 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2110 {CC"getMethodBooleanOption",
2111 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2112 (void*)&WB_GetMethodBooleaneOption},
2113 {CC"getMethodIntxOption",
2114 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2115 (void*)&WB_GetMethodIntxOption},
2116 {CC"getMethodUintxOption",
2117 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2118 (void*)&WB_GetMethodUintxOption},
2119 {CC"getMethodDoubleOption",
2120 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2121 (void*)&WB_GetMethodDoubleOption},
2122 {CC"getMethodStringOption",
2123 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2124 (void*)&WB_GetMethodStringOption},
2125 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2126 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2127 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2128 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2129 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2130 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2131 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2132
2133 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2134 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2135 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2136 (void*)&WB_AddCompilerDirective },
2137 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2138 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2139 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2140 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2141 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2142 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2143 (void*)&WB_GetConcurrentGCPhases},
2144 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2145 (void*)&WB_RequestConcurrentGCPhase},
2146 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2147 (void*)&WB_CheckLibSpecifiesNoexecstack},
2148 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2149 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2150 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2151 };
2152
2153
2154 #undef CC
2155
2156 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2157 {
2158 if (WhiteBoxAPI) {
2159 // Make sure that wbclass is loaded by the null classloader
2160 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2161 Handle loader(THREAD, ik->class_loader());
2162 if (loader.is_null()) {
2163 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2164 WhiteBox::register_extended(env, wbclass, thread);
2165 WhiteBox::set_used();
2166 }
2167 }
2168 }
2169 JVM_END