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/genCollectedHeap.hpp"
36 #include "jvmtifiles/jvmtiEnv.hpp"
37 #include "memory/metadataFactory.hpp"
38 #include "memory/metaspaceShared.hpp"
39 #include "memory/iterator.hpp"
40 #include "memory/resourceArea.hpp"
41 #include "memory/universe.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "oops/array.hpp"
44 #include "oops/constantPool.inline.hpp"
45 #include "oops/method.inline.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/objArrayOop.inline.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/typeArrayOop.inline.hpp"
50 #include "prims/wbtestmethods/parserTests.hpp"
51 #include "prims/whitebox.inline.hpp"
52 #include "runtime/arguments.hpp"
53 #include "runtime/compilationPolicy.hpp"
54 #include "runtime/deoptimization.hpp"
55 #include "runtime/frame.inline.hpp"
56 #include "runtime/handshake.hpp"
57 #include "runtime/interfaceSupport.inline.hpp"
58 #include "runtime/javaCalls.hpp"
59 #include "runtime/jniHandles.inline.hpp"
60 #include "runtime/os.hpp"
61 #include "runtime/sweeper.hpp"
62 #include "runtime/thread.hpp"
63 #include "runtime/threadSMR.hpp"
64 #include "runtime/vm_version.hpp"
65 #include "services/memoryService.hpp"
66 #include "utilities/align.hpp"
67 #include "utilities/debug.hpp"
68 #include "utilities/elfFile.hpp"
69 #include "utilities/exceptions.hpp"
70 #include "utilities/macros.hpp"
71 #if INCLUDE_CDS
72 #include "prims/cdsoffsets.hpp"
73 #endif // INCLUDE_CDS
74 #if INCLUDE_ALL_GCS
75 #include "gc/g1/concurrentMarkThread.hpp"
76 #include "gc/g1/g1CollectedHeap.inline.hpp"
77 #include "gc/g1/g1ConcurrentMark.hpp"
78 #include "gc/g1/heapRegionRemSet.hpp"
79 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
80 #include "gc/parallel/adjoiningGenerations.hpp"
81 #endif // INCLUDE_ALL_GCS
82 #if INCLUDE_NMT
83 #include "services/mallocSiteTable.hpp"
84 #include "services/memTracker.hpp"
85 #include "utilities/nativeCallStack.hpp"
86 #endif // INCLUDE_NMT
87
88 #ifdef LINUX
89 #include "osContainer_linux.hpp"
90 #endif
91
92 #define SIZE_T_MAX_VALUE ((size_t) -1)
93
94 #define CHECK_JNI_EXCEPTION_(env, value) \
95 do { \
96 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
97 if (HAS_PENDING_EXCEPTION) { \
98 return(value); \
99 } \
100 } while (0)
101
102 #define CHECK_JNI_EXCEPTION(env) \
103 do { \
104 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
105 if (HAS_PENDING_EXCEPTION) { \
106 return; \
107 } \
108 } while (0)
109
110 bool WhiteBox::_used = false;
111 volatile bool WhiteBox::compilation_locked = false;
112
113 class VM_WhiteBoxOperation : public VM_Operation {
114 public:
115 VM_WhiteBoxOperation() { }
116 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
117 bool allow_nested_vm_operations() const { return true; }
118 };
119
120
121 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
122 return (jlong)(void*)JNIHandles::resolve(obj);
123 WB_END
124
125 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
126 return heapOopSize;
127 WB_END
128
129 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
130 return os::vm_page_size();
131 WB_END
132
133 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
134 return os::vm_allocation_granularity();
135 WB_END
136
137 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
138 return os::large_page_size();
139 WB_END
140
141 class WBIsKlassAliveClosure : public KlassClosure {
142 Symbol* _name;
143 bool _found;
144 public:
145 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
146
147 void do_klass(Klass* k) {
148 if (_found) return;
149 Symbol* ksym = k->name();
150 if (ksym->fast_compare(_name) == 0) {
151 _found = true;
152 }
153 }
154
155 bool found() const {
156 return _found;
157 }
158 };
159
160 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
161 oop h_name = JNIHandles::resolve(name);
162 if (h_name == NULL) return false;
163 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
164 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
165
166 WBIsKlassAliveClosure closure(sym);
167 ClassLoaderDataGraph::classes_do(&closure);
168
169 return closure.found();
170 WB_END
171
172 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
173 #if INCLUDE_JVMTI
174 ResourceMark rm;
175 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
176 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
177 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
178 assert(err == JVMTI_ERROR_NONE, "must not fail");
179 #endif
180 }
181 WB_END
182
183 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
184 #if INCLUDE_JVMTI
185 ResourceMark rm;
186 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
187 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
188 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
189 assert(err == JVMTI_ERROR_NONE, "must not fail");
190 #endif
191 }
192 WB_END
193
194
195 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
196 return (jlong)Arguments::max_heap_for_compressed_oops();
197 }
198 WB_END
199
200 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
201 CollectorPolicy * p = Universe::heap()->collector_policy();
202 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
203 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
204 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
205 p->space_alignment(), p->heap_alignment());
206 }
207 WB_END
208
209 #ifndef PRODUCT
210 // Forward declaration
211 void TestReservedSpace_test();
212 void TestReserveMemorySpecial_test();
213 void TestVirtualSpace_test();
214 void TestMetaspaceUtils_test();
215 #endif
216
217 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
218 #ifndef PRODUCT
219 TestReservedSpace_test();
220 TestReserveMemorySpecial_test();
221 TestVirtualSpace_test();
222 TestMetaspaceUtils_test();
223 #endif
224 WB_END
225
226 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
227 size_t granularity = os::vm_allocation_granularity();
228 ReservedHeapSpace rhs(100 * granularity, granularity, false);
229 VirtualSpace vs;
230 vs.initialize(rhs, 50 * granularity);
231
232 // Check if constraints are complied
233 if (!( UseCompressedOops && rhs.base() != NULL &&
234 Universe::narrow_oop_base() != NULL &&
235 Universe::narrow_oop_use_implicit_null_checks() )) {
236 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
237 "\tUseCompressedOops is %d\n"
238 "\trhs.base() is " PTR_FORMAT "\n"
239 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
240 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
241 UseCompressedOops,
242 p2i(rhs.base()),
243 p2i(Universe::narrow_oop_base()),
244 Universe::narrow_oop_use_implicit_null_checks());
245 return;
246 }
247 tty->print_cr("Reading from no access area... ");
248 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
249 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
250 WB_END
251
252 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
253 size_t magnitude, size_t iterations) {
254 size_t granularity = os::vm_allocation_granularity();
255 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
256 VirtualSpace vs;
257 if (!vs.initialize(rhs, 0)) {
258 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
259 return 3;
260 }
261
262 int seed = os::random();
263 tty->print_cr("Random seed is %d", seed);
264 os::init_random(seed);
265
266 for (size_t i = 0; i < iterations; i++) {
267
268 // Whether we will shrink or grow
269 bool shrink = os::random() % 2L == 0;
270
271 // Get random delta to resize virtual space
272 size_t delta = (size_t)os::random() % magnitude;
273
274 // If we are about to shrink virtual space below zero, then expand instead
275 if (shrink && vs.committed_size() < delta) {
276 shrink = false;
277 }
278
279 // Resizing by delta
280 if (shrink) {
281 vs.shrink_by(delta);
282 } else {
283 // If expanding fails expand_by will silently return false
284 vs.expand_by(delta, true);
285 }
286 }
287 return 0;
288 }
289
290 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
291 jlong reserved_space_size, jlong magnitude, jlong iterations))
292 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
293 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
294 iterations);
295 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
296 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
297 return 1;
298 }
299
300 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
301 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
302 if (sizeof(size_t) < sizeof(jlong)) {
303 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
304 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
305 || iterations > size_t_max_value) {
306 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
307 return 2;
308 }
309 }
310
311 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
312 (size_t) magnitude, (size_t) iterations);
313 WB_END
314
315 static const jint serial_code = 1;
316 static const jint parallel_code = 2;
317 static const jint cms_code = 4;
318 static const jint g1_code = 8;
319
320 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
321 if (UseSerialGC) {
322 return serial_code;
323 } else if (UseParallelGC || UseParallelOldGC) {
324 return parallel_code;
325 } if (UseConcMarkSweepGC) {
326 return cms_code;
327 } else if (UseG1GC) {
328 return g1_code;
329 }
330 ShouldNotReachHere();
331 return 0;
332 WB_END
333
334 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
335 #if INCLUDE_ALL_GCS
336 return serial_code | parallel_code | cms_code | g1_code;
337 #else
338 return serial_code;
339 #endif // INCLUDE_ALL_GCS
340 WB_END
341
342 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
343 if (UseSerialGC) {
344 return FLAG_IS_ERGO(UseSerialGC);
345 } else if (UseParallelGC) {
346 return FLAG_IS_ERGO(UseParallelGC);
347 } else if (UseParallelOldGC) {
348 return FLAG_IS_ERGO(UseParallelOldGC);
349 } else if (UseConcMarkSweepGC) {
350 return FLAG_IS_ERGO(UseConcMarkSweepGC);
351 } else if (UseG1GC) {
352 return FLAG_IS_ERGO(UseG1GC);
353 }
354 ShouldNotReachHere();
355 return false;
356 WB_END
357
358 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
359 oop p = JNIHandles::resolve(obj);
360 #if INCLUDE_ALL_GCS
361 if (UseG1GC) {
362 G1CollectedHeap* g1 = G1CollectedHeap::heap();
363 const HeapRegion* hr = g1->heap_region_containing(p);
364 if (hr == NULL) {
365 return false;
366 }
367 return !(hr->is_young());
368 } else if (UseParallelGC) {
369 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
370 return !psh->is_in_young(p);
371 }
372 #endif // INCLUDE_ALL_GCS
373 GenCollectedHeap* gch = GenCollectedHeap::heap();
374 return !gch->is_in_young(p);
375 WB_END
376
377 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
378 oop p = JNIHandles::resolve(obj);
379 return p->size() * HeapWordSize;
380 WB_END
381
382 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
383 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
384 return (jlong)alignment;
385 WB_END
386
387 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
388 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
389 return (jlong)alignment;
390 WB_END
391
392 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
393 return Universe::heap()->supports_concurrent_phase_control();
394 WB_END
395
396 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
397 const char* const* phases = Universe::heap()->concurrent_phases();
398 jint nphases = 0;
399 for ( ; phases[nphases] != NULL; ++nphases) ;
400
401 ResourceMark rm(thread);
402 ThreadToNativeFromVM ttn(thread);
403 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
404 CHECK_JNI_EXCEPTION_(env, NULL);
405
406 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
407 CHECK_JNI_EXCEPTION_(env, NULL);
408
409 // If push fails, return with pending exception.
410 if (env->PushLocalFrame(nphases) < 0) return NULL;
411 for (jint i = 0; i < nphases; ++i) {
412 jstring phase = env->NewStringUTF(phases[i]);
413 CHECK_JNI_EXCEPTION_(env, NULL);
414 env->SetObjectArrayElement(result, i, phase);
415 CHECK_JNI_EXCEPTION_(env, NULL);
416 }
417 env->PopLocalFrame(NULL);
418
419 return result;
420 WB_END
421
422 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
423 Handle h_name(THREAD, JNIHandles::resolve(name));
424 ResourceMark rm;
425 const char* c_name = java_lang_String::as_utf8_string(h_name());
426 return Universe::heap()->request_concurrent_phase(c_name);
427 WB_END
428
429 #if INCLUDE_ALL_GCS
430 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
431 if (UseG1GC) {
432 G1CollectedHeap* g1 = G1CollectedHeap::heap();
433 oop result = JNIHandles::resolve(obj);
434 const HeapRegion* hr = g1->heap_region_containing(result);
435 return hr->is_humongous();
436 }
437 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
438 WB_END
439
440 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
441 if (UseG1GC) {
442 G1CollectedHeap* g1 = G1CollectedHeap::heap();
443 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
444 return hr->is_humongous();
445 }
446 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
447 WB_END
448
449 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
450 if (UseG1GC) {
451 G1CollectedHeap* g1 = G1CollectedHeap::heap();
452 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
453 return hr->is_free();
454 }
455 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
456 WB_END
457
458 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
459 if (UseG1GC) {
460 G1CollectedHeap* g1 = G1CollectedHeap::heap();
461 size_t nr = g1->max_regions();
462 return (jlong)nr;
463 }
464 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
465 WB_END
466
467 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
468 if (UseG1GC) {
469 G1CollectedHeap* g1 = G1CollectedHeap::heap();
470 size_t nr = g1->num_free_regions();
471 return (jlong)nr;
472 }
473 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
474 WB_END
475
476 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
477 if (UseG1GC) {
478 G1CollectedHeap* g1h = G1CollectedHeap::heap();
479 return g1h->concurrent_mark()->cm_thread()->during_cycle();
480 }
481 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
482 WB_END
483
484 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
485 if (UseG1GC) {
486 G1CollectedHeap* g1h = G1CollectedHeap::heap();
487 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
488 g1h->collect(GCCause::_wb_conc_mark);
489 return true;
490 }
491 return false;
492 }
493 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
494 WB_END
495
496 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
497 if (UseG1GC) {
498 return (jint)HeapRegion::GrainBytes;
499 }
500 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
501 WB_END
502
503 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
504 #if INCLUDE_ALL_GCS
505 if (UseParallelGC) {
506 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
507 }
508 #endif // INCLUDE_ALL_GCS
509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
510 WB_END
511
512 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
513 #if INCLUDE_ALL_GCS
514 if (UseParallelGC) {
515 return ParallelScavengeHeap::heap()->generation_alignment();
516 }
517 #endif // INCLUDE_ALL_GCS
518 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
519 WB_END
520
521 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
522 #if INCLUDE_ALL_GCS
523 if (UseG1GC) {
524 ResourceMark rm(THREAD);
525 G1CollectedHeap* g1h = G1CollectedHeap::heap();
526 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
527 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
528 return JNIHandles::make_local(env, h());
529 }
530 #endif // INCLUDE_ALL_GCS
531 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
532 WB_END
533
534 class OldRegionsLivenessClosure: public HeapRegionClosure {
535
536 private:
537 const int _liveness;
538 size_t _total_count;
539 size_t _total_memory;
540 size_t _total_memory_to_free;
541
542 public:
543 OldRegionsLivenessClosure(int liveness) :
544 _liveness(liveness),
545 _total_count(0),
546 _total_memory(0),
547 _total_memory_to_free(0) { }
548
549 size_t total_count() { return _total_count; }
550 size_t total_memory() { return _total_memory; }
551 size_t total_memory_to_free() { return _total_memory_to_free; }
552
553 bool do_heap_region(HeapRegion* r) {
554 if (r->is_old()) {
555 size_t prev_live = r->marked_bytes();
556 size_t live = r->live_bytes();
557 size_t size = r->used();
558 size_t reg_size = HeapRegion::GrainBytes;
559 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
560 _total_memory += size;
561 ++_total_count;
562 if (size == reg_size) {
563 // we don't include non-full regions since they are unlikely included in mixed gc
564 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
565 _total_memory_to_free += size - prev_live;
566 }
567 }
568 }
569 return false;
570 }
571 };
572
573
574 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
575 if (!UseG1GC) {
576 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
577 }
578 if (liveness < 0) {
579 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
580 }
581
582 G1CollectedHeap* g1h = G1CollectedHeap::heap();
583 OldRegionsLivenessClosure rli(liveness);
584 g1h->heap_region_iterate(&rli);
585
586 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
587 result->long_at_put(0, rli.total_count());
588 result->long_at_put(1, rli.total_memory());
589 result->long_at_put(2, rli.total_memory_to_free());
590 return (jlongArray) JNIHandles::make_local(env, result);
591 WB_END
592
593 #endif // INCLUDE_ALL_GCS
594
595 #if INCLUDE_NMT
596 // Alloc memory using the test memory type so that we can use that to see if
597 // NMT picks it up correctly
598 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
599 jlong addr = 0;
600 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
601 return addr;
602 WB_END
603
604 // Alloc memory with pseudo call stack. The test can create psudo malloc
605 // allocation site to stress the malloc tracking.
606 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
607 address pc = (address)(size_t)pseudo_stack;
608 NativeCallStack stack(&pc, 1);
609 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
610 WB_END
611
612 // Free the memory allocated by NMTAllocTest
613 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
614 os::free((void*)(uintptr_t)mem);
615 WB_END
616
617 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
618 jlong addr = 0;
619
620 addr = (jlong)(uintptr_t)os::reserve_memory(size);
621 MemTracker::record_virtual_memory_type((address)addr, mtTest);
622
623 return addr;
624 WB_END
625
626 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
627 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
628 MemTracker::record_virtual_memory_type((address)addr, mtTest);
629
630 return addr;
631 WB_END
632
633 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
634 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
635 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
636 WB_END
637
638 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
639 os::uncommit_memory((char *)(uintptr_t)addr, size);
640 WB_END
641
642 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
643 os::release_memory((char *)(uintptr_t)addr, size);
644 WB_END
645
646 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
647 // Test that we can downgrade NMT levels but not upgrade them.
648 if (MemTracker::tracking_level() == NMT_off) {
649 MemTracker::transition_to(NMT_off);
650 return MemTracker::tracking_level() == NMT_off;
651 } else {
652 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
653 MemTracker::transition_to(NMT_summary);
654 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
655
656 // Can't go to detail once NMT is set to summary.
657 MemTracker::transition_to(NMT_detail);
658 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
659
660 // Shutdown sets tracking level to minimal.
661 MemTracker::shutdown();
662 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
663
664 // Once the tracking level is minimal, we cannot increase to summary.
665 // The code ignores this request instead of asserting because if the malloc site
666 // table overflows in another thread, it tries to change the code to summary.
667 MemTracker::transition_to(NMT_summary);
668 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
669
670 // Really can never go up to detail, verify that the code would never do this.
671 MemTracker::transition_to(NMT_detail);
672 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
673 return MemTracker::tracking_level() == NMT_minimal;
674 }
675 WB_END
676
677 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
678 int hash_size = MallocSiteTable::hash_buckets();
679 assert(hash_size > 0, "NMT hash_size should be > 0");
680 return (jint)hash_size;
681 WB_END
682 #endif // INCLUDE_NMT
683
684 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
685 assert(method != NULL, "method should not be null");
686 ThreadToNativeFromVM ttn(thread);
687 return env->FromReflectedMethod(method);
688 }
689
690 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
691 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
692 private:
693 int _result;
694 const bool _make_not_entrant;
695 public:
696 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
697 _result(0), _make_not_entrant(make_not_entrant) { }
698 int result() const { return _result; }
699
700 void doit() {
701 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
702 if (t->has_last_Java_frame()) {
703 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
704 frame* f = fst.current();
705 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
706 RegisterMap* reg_map = fst.register_map();
707 Deoptimization::deoptimize(t, *f, reg_map);
708 if (_make_not_entrant) {
709 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
710 assert(cm != NULL, "sanity check");
711 cm->make_not_entrant();
712 }
713 ++_result;
714 }
715 }
716 }
717 }
718 }
719 };
720
721 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
722 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
723 VMThread::execute(&op);
724 return op.result();
725 WB_END
726
727 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
728 MutexLockerEx mu(Compile_lock);
729 CodeCache::mark_all_nmethods_for_deoptimization();
730 VM_Deoptimize op;
731 VMThread::execute(&op);
732 WB_END
733
734 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
735 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
736 int result = 0;
737 CHECK_JNI_EXCEPTION_(env, result);
738 MutexLockerEx mu(Compile_lock);
739 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
740 if (is_osr) {
741 result += mh->mark_osr_nmethods();
742 } else if (mh->code() != NULL) {
743 mh->code()->mark_for_deoptimization();
744 ++result;
745 }
746 result += CodeCache::mark_for_deoptimization(mh());
747 if (result > 0) {
748 VM_Deoptimize op;
749 VMThread::execute(&op);
750 }
751 return result;
752 WB_END
753
754 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
755 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
756 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
757 MutexLockerEx mu(Compile_lock);
758 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
759 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
760 if (code == NULL) {
761 return JNI_FALSE;
762 }
763 return (code->is_alive() && !code->is_marked_for_deoptimization());
764 WB_END
765
766 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
767 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
768 return false;
769 }
770 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
771 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
772 MutexLockerEx mu(Compile_lock);
773 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
774 if (is_osr) {
775 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
776 } else {
777 return CompilationPolicy::can_be_compiled(mh, comp_level);
778 }
779 WB_END
780
781 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
782 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
783 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
784 MutexLockerEx mu(Compile_lock);
785 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
786 return mh->queued_for_compilation();
787 WB_END
788
789 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
790 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
791 return false; // Intrinsic is not available on a non-existent compilation level.
792 }
793 jmethodID method_id, compilation_context_id;
794 method_id = reflected_method_to_jmid(thread, env, method);
795 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
796 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
797
798 DirectiveSet* directive;
799 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
800 assert(comp != NULL, "compiler not available");
801 if (compilation_context != NULL) {
802 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
803 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
804 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
805 directive = DirectivesStack::getMatchingDirective(cch, comp);
806 } else {
807 // Calling with NULL matches default directive
808 directive = DirectivesStack::getDefaultDirective(comp);
809 }
810 bool result = comp->is_intrinsic_available(mh, directive);
811 DirectivesStack::release(directive);
812 return result;
813 WB_END
814
815 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
816 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
817 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
818 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
819 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
820 return (code != NULL ? code->comp_level() : CompLevel_none);
821 WB_END
822
823 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
825 CHECK_JNI_EXCEPTION(env);
826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
827 if (is_osr) {
828 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
829 } else {
830 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
831 }
832 WB_END
833
834 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
835 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
836 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
837 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
838 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
839 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
840 WB_END
841
842 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
843 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
844 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
845 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
846 bool result = mh->dont_inline();
847 mh->set_dont_inline(value == JNI_TRUE);
848 return result;
849 WB_END
850
851 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
852 if (comp_level == CompLevel_any) {
853 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
854 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
855 } else {
856 return CompileBroker::queue_size(comp_level);
857 }
858 WB_END
859
860 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
861 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
862 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
863 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
864 bool result = mh->force_inline();
865 mh->set_force_inline(value == JNI_TRUE);
866 return result;
867 WB_END
868
869 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
870 // Screen for unavailable/bad comp level or null method
871 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
872 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) {
873 return false;
874 }
875
876 // Check if compilation is blocking
877 methodHandle mh(THREAD, method);
878 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
879 bool is_blocking = !directive->BackgroundCompilationOption;
880 DirectivesStack::release(directive);
881
882 // Compile method and check result
883 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
884 MutexLockerEx mu(Compile_lock);
885 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL);
886 }
887
888 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
889 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
890 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
891 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
892 WB_END
893
894 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
895 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
896 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
897 WB_END
898
899 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
900 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
901 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
902
903 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
904 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
905 bool result = directive->PrintAssemblyOption;
906 DirectivesStack::release(directive);
907
908 return result;
909 WB_END
910
911 WB_ENTRY(jint, WB_MatchesInline(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 const char* error_msg = NULL;
919 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
920 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
921
922 if (m == NULL) {
923 assert(error_msg != NULL, "Always have an error message");
924 tty->print_cr("Got error: %s", error_msg);
925 return -1; // Pattern failed
926 }
927
928 // Pattern works - now check if it matches
929 int result;
930 if (m->match(mh, InlineMatcher::force_inline)) {
931 result = 2; // Force inline match
932 } else if (m->match(mh, InlineMatcher::dont_inline)) {
933 result = 1; // Dont inline match
934 } else {
935 result = 0; // No match
936 }
937 delete m;
938 return result;
939 WB_END
940
941 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
942 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
943 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
944
945 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
946
947 ResourceMark rm;
948 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
949
950 const char* error_msg = NULL;
951
952 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
953 if (m == NULL) {
954 assert(error_msg != NULL, "Must have error_msg");
955 tty->print_cr("Got error: %s", error_msg);
956 return -1;
957 }
958
959 // Pattern works - now check if it matches
960 int result = m->matches(mh);
961 delete m;
962 assert(result == 0 || result == 1, "Result out of range");
963 return result;
964 WB_END
965
966 static AlwaysFalseClosure always_false;
967
968 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
969 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
970 CHECK_JNI_EXCEPTION(env);
971 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
972 MutexLockerEx mu(Compile_lock);
973 MethodData* mdo = mh->method_data();
974 MethodCounters* mcs = mh->method_counters();
975
976 if (mdo != NULL) {
977 mdo->init();
978 ResourceMark rm;
979 int arg_count = mdo->method()->size_of_parameters();
980 for (int i = 0; i < arg_count; i++) {
981 mdo->set_arg_modified(i, 0);
982 }
983 MutexLockerEx mu(mdo->extra_data_lock());
984 mdo->clean_method_data(&always_false);
985 }
986
987 mh->clear_not_c1_compilable();
988 mh->clear_not_c2_compilable();
989 mh->clear_not_c2_osr_compilable();
990 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
991 if (mcs != NULL) {
992 mcs->backedge_counter()->init();
993 mcs->invocation_counter()->init();
994 mcs->set_interpreter_invocation_count(0);
995 mcs->set_interpreter_throwout_count(0);
996
997 #ifdef TIERED
998 mcs->set_rate(0.0F);
999 mh->set_prev_event_count(0);
1000 mh->set_prev_time(0);
1001 #endif
1002 }
1003 WB_END
1004
1005 template <typename T>
1006 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
1007 if (name == NULL) {
1008 return false;
1009 }
1010 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1011 const char* flag_name = env->GetStringUTFChars(name, NULL);
1012 CHECK_JNI_EXCEPTION_(env, false);
1013 Flag::Error result = (*TAt)(flag_name, value, true, true);
1014 env->ReleaseStringUTFChars(name, flag_name);
1015 return (result == Flag::SUCCESS);
1016 }
1017
1018 template <typename T>
1019 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
1020 if (name == NULL) {
1021 return false;
1022 }
1023 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1024 const char* flag_name = env->GetStringUTFChars(name, NULL);
1025 CHECK_JNI_EXCEPTION_(env, false);
1026 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
1027 env->ReleaseStringUTFChars(name, flag_name);
1028 return (result == Flag::SUCCESS);
1029 }
1030
1031 template <typename T>
1032 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1033 ResourceMark rm(thread);
1034 jclass clazz = env->FindClass(name->as_C_string());
1035 CHECK_JNI_EXCEPTION_(env, NULL);
1036 jmethodID methodID = env->GetStaticMethodID(clazz,
1037 vmSymbols::valueOf_name()->as_C_string(),
1038 sig->as_C_string());
1039 CHECK_JNI_EXCEPTION_(env, NULL);
1040 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1041 CHECK_JNI_EXCEPTION_(env, NULL);
1042 return result;
1043 }
1044
1045 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1046 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1047 }
1048 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1049 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1050 }
1051 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1052 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1053 }
1054 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1055 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1056 }*/
1057 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1058 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1059 }
1060
1061 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1062 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1063 const char* flag_name = env->GetStringUTFChars(name, NULL);
1064 CHECK_JNI_EXCEPTION_(env, NULL);
1065 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1066 env->ReleaseStringUTFChars(name, flag_name);
1067 return result;
1068 }
1069
1070 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1071 Flag* flag = getVMFlag(thread, env, name);
1072 return (flag != NULL) && flag->is_constant_in_binary();
1073 WB_END
1074
1075 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1076 Flag* flag = getVMFlag(thread, env, name);
1077 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1078 WB_END
1079
1080 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1081 bool result;
1082 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1083 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1084 return booleanBox(thread, env, result);
1085 }
1086 return NULL;
1087 WB_END
1088
1089 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1090 int result;
1091 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1092 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1093 return longBox(thread, env, result);
1094 }
1095 return NULL;
1096 WB_END
1097
1098 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1099 uint result;
1100 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1101 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1102 return longBox(thread, env, result);
1103 }
1104 return NULL;
1105 WB_END
1106
1107 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1108 intx result;
1109 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1110 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1111 return longBox(thread, env, result);
1112 }
1113 return NULL;
1114 WB_END
1115
1116 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1117 uintx result;
1118 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1119 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1120 return longBox(thread, env, result);
1121 }
1122 return NULL;
1123 WB_END
1124
1125 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1126 uint64_t result;
1127 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1128 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1129 return longBox(thread, env, result);
1130 }
1131 return NULL;
1132 WB_END
1133
1134 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1135 uintx result;
1136 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1137 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1138 return longBox(thread, env, result);
1139 }
1140 return NULL;
1141 WB_END
1142
1143 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1144 double result;
1145 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1146 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1147 return doubleBox(thread, env, result);
1148 }
1149 return NULL;
1150 WB_END
1151
1152 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1153 ccstr ccstrResult;
1154 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1155 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1156 jstring result = env->NewStringUTF(ccstrResult);
1157 CHECK_JNI_EXCEPTION_(env, NULL);
1158 return result;
1159 }
1160 return NULL;
1161 WB_END
1162
1163 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1164 bool result = value == JNI_TRUE ? true : false;
1165 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1166 WB_END
1167
1168 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1169 int result = value;
1170 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1171 WB_END
1172
1173 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1174 uint result = value;
1175 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1176 WB_END
1177
1178 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1179 intx result = value;
1180 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1181 WB_END
1182
1183 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1184 uintx result = value;
1185 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1186 WB_END
1187
1188 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1189 uint64_t result = value;
1190 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1191 WB_END
1192
1193 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1194 size_t result = value;
1195 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1196 WB_END
1197
1198 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1199 double result = value;
1200 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1201 WB_END
1202
1203 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1204 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1205 const char* ccstrValue;
1206 if (value == NULL) {
1207 ccstrValue = NULL;
1208 }
1209 else {
1210 ccstrValue = env->GetStringUTFChars(value, NULL);
1211 CHECK_JNI_EXCEPTION(env);
1212 }
1213 ccstr ccstrResult = ccstrValue;
1214 bool needFree;
1215 {
1216 ThreadInVMfromNative ttvfn(thread); // back to VM
1217 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1218 }
1219 if (value != NULL) {
1220 env->ReleaseStringUTFChars(value, ccstrValue);
1221 }
1222 if (needFree) {
1223 FREE_C_HEAP_ARRAY(char, ccstrResult);
1224 }
1225 WB_END
1226
1227 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1228 WhiteBox::compilation_locked = true;
1229 WB_END
1230
1231 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1232 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1233 WhiteBox::compilation_locked = false;
1234 mo.notify_all();
1235 WB_END
1236
1237 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1238 // Force a code cache sweep and block until it finished
1239 NMethodSweeper::force_sweep();
1240 WB_END
1241
1242 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1243 ResourceMark rm(THREAD);
1244 int len;
1245 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1246 return (StringTable::lookup(name, len) != NULL);
1247 WB_END
1248
1249 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1250 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1251 Universe::heap()->collect(GCCause::_wb_full_gc);
1252 #if INCLUDE_ALL_GCS
1253 if (UseG1GC) {
1254 // Needs to be cleared explicitly for G1
1255 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1256 }
1257 #endif // INCLUDE_ALL_GCS
1258 WB_END
1259
1260 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1261 Universe::heap()->collect(GCCause::_wb_young_gc);
1262 WB_END
1263
1264 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1265 // static+volatile in order to force the read to happen
1266 // (not be eliminated by the compiler)
1267 static char c;
1268 static volatile char* p;
1269
1270 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1271 if (p == NULL) {
1272 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1273 }
1274
1275 c = *p;
1276 WB_END
1277
1278 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1279 const char* features = VM_Version::features_string();
1280 ThreadToNativeFromVM ttn(thread);
1281 jstring features_string = env->NewStringUTF(features);
1282
1283 CHECK_JNI_EXCEPTION_(env, NULL);
1284
1285 return features_string;
1286 WB_END
1287
1288 int WhiteBox::get_blob_type(const CodeBlob* code) {
1289 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1290 if (code->is_aot()) {
1291 return -1;
1292 }
1293 return CodeCache::get_code_heap(code)->code_blob_type();
1294 }
1295
1296 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1297 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1298 return CodeCache::get_code_heap(blob_type);
1299 }
1300
1301 struct CodeBlobStub {
1302 CodeBlobStub(const CodeBlob* blob) :
1303 name(os::strdup(blob->name())),
1304 size(blob->size()),
1305 blob_type(WhiteBox::get_blob_type(blob)),
1306 address((jlong) blob) { }
1307 ~CodeBlobStub() { os::free((void*) name); }
1308 const char* const name;
1309 const jint size;
1310 const jint blob_type;
1311 const jlong address;
1312 };
1313
1314 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1315 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1316 CHECK_JNI_EXCEPTION_(env, NULL);
1317 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1318
1319 jstring name = env->NewStringUTF(cb->name);
1320 CHECK_JNI_EXCEPTION_(env, NULL);
1321 env->SetObjectArrayElement(result, 0, name);
1322
1323 jobject obj = integerBox(thread, env, cb->size);
1324 CHECK_JNI_EXCEPTION_(env, NULL);
1325 env->SetObjectArrayElement(result, 1, obj);
1326
1327 obj = integerBox(thread, env, cb->blob_type);
1328 CHECK_JNI_EXCEPTION_(env, NULL);
1329 env->SetObjectArrayElement(result, 2, obj);
1330
1331 obj = longBox(thread, env, cb->address);
1332 CHECK_JNI_EXCEPTION_(env, NULL);
1333 env->SetObjectArrayElement(result, 3, obj);
1334
1335 return result;
1336 }
1337
1338 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1339 ResourceMark rm(THREAD);
1340 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1341 CHECK_JNI_EXCEPTION_(env, NULL);
1342 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1343 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1344 jobjectArray result = NULL;
1345 if (code == NULL) {
1346 return result;
1347 }
1348 int comp_level = code->comp_level();
1349 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1350
1351 ThreadToNativeFromVM ttn(thread);
1352 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1353 CHECK_JNI_EXCEPTION_(env, NULL);
1354 result = env->NewObjectArray(5, clazz, NULL);
1355 if (result == NULL) {
1356 return result;
1357 }
1358
1359 CodeBlobStub stub(code);
1360 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1361 CHECK_JNI_EXCEPTION_(env, NULL);
1362 env->SetObjectArrayElement(result, 0, codeBlob);
1363
1364 jobject level = integerBox(thread, env, comp_level);
1365 CHECK_JNI_EXCEPTION_(env, NULL);
1366 env->SetObjectArrayElement(result, 1, level);
1367
1368 jbyteArray insts = env->NewByteArray(insts_size);
1369 CHECK_JNI_EXCEPTION_(env, NULL);
1370 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1371 env->SetObjectArrayElement(result, 2, insts);
1372
1373 jobject id = integerBox(thread, env, code->compile_id());
1374 CHECK_JNI_EXCEPTION_(env, NULL);
1375 env->SetObjectArrayElement(result, 3, id);
1376
1377 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1378 CHECK_JNI_EXCEPTION_(env, NULL);
1379 env->SetObjectArrayElement(result, 4, entry_point);
1380
1381 return result;
1382 WB_END
1383
1384 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1385 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1386 BufferBlob* blob;
1387 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1388 if (full_size < size) {
1389 full_size += align_up(size - full_size, oopSize);
1390 }
1391 {
1392 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1393 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1394 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1395 }
1396 // Track memory usage statistic after releasing CodeCache_lock
1397 MemoryService::track_code_cache_memory_usage();
1398 return blob;
1399 }
1400
1401 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1402 if (size < 0) {
1403 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1404 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1405 }
1406 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1407 WB_END
1408
1409 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1410 if (addr == 0) {
1411 return;
1412 }
1413 BufferBlob::free((BufferBlob*) addr);
1414 WB_END
1415
1416 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1417 ResourceMark rm;
1418 GrowableArray<CodeBlobStub*> blobs;
1419 {
1420 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1421 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1422 if (heap == NULL) {
1423 return NULL;
1424 }
1425 for (CodeBlob* cb = (CodeBlob*) heap->first();
1426 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1427 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1428 new (stub) CodeBlobStub(cb);
1429 blobs.append(stub);
1430 }
1431 }
1432 if (blobs.length() == 0) {
1433 return NULL;
1434 }
1435 ThreadToNativeFromVM ttn(thread);
1436 jobjectArray result = NULL;
1437 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1438 CHECK_JNI_EXCEPTION_(env, NULL);
1439 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1440 CHECK_JNI_EXCEPTION_(env, NULL);
1441 if (result == NULL) {
1442 return result;
1443 }
1444 int i = 0;
1445 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1446 it != blobs.end(); ++it) {
1447 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1448 CHECK_JNI_EXCEPTION_(env, NULL);
1449 env->SetObjectArrayElement(result, i, obj);
1450 CHECK_JNI_EXCEPTION_(env, NULL);
1451 ++i;
1452 }
1453 return result;
1454 WB_END
1455
1456 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1457 return CompileBroker::get_compilation_activity_mode();
1458 WB_END
1459
1460 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1461 if (addr == 0) {
1462 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1463 "WB_GetCodeBlob: addr is null");
1464 }
1465 ThreadToNativeFromVM ttn(thread);
1466 CodeBlobStub stub((CodeBlob*) addr);
1467 return codeBlob2objectArray(thread, env, &stub);
1468 WB_END
1469
1470 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1471 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1472 CHECK_JNI_EXCEPTION_(env, 0);
1473 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1474 return (jlong) mh->method_data();
1475 WB_END
1476
1477 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1478 return (jlong) Thread::current()->stack_size();
1479 WB_END
1480
1481 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1482 JavaThread* t = JavaThread::current();
1483 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1484 WB_END
1485
1486
1487 int WhiteBox::array_bytes_to_length(size_t bytes) {
1488 return Array<u1>::bytes_to_length(bytes);
1489 }
1490
1491 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1492 if (size < 0) {
1493 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1494 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1495 }
1496
1497 oop class_loader_oop = JNIHandles::resolve(class_loader);
1498 ClassLoaderData* cld = class_loader_oop != NULL
1499 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1500 : ClassLoaderData::the_null_class_loader_data();
1501
1502 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1503
1504 return (jlong)(uintptr_t)metadata;
1505 WB_END
1506
1507 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1508 oop class_loader_oop = JNIHandles::resolve(class_loader);
1509 ClassLoaderData* cld = class_loader_oop != NULL
1510 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1511 : ClassLoaderData::the_null_class_loader_data();
1512
1513 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1514 WB_END
1515
1516 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1517 jstring version, jstring location, jobjectArray packages))
1518 ResourceMark rm(THREAD);
1519
1520 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1521 objArrayHandle packages_h(THREAD, packages_oop);
1522 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1523
1524 char** pkgs = NULL;
1525 if (num_packages > 0) {
1526 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1527 for (int x = 0; x < num_packages; x++) {
1528 oop pkg_str = packages_h->obj_at(x);
1529 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1530 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1531 err_msg("Bad package name"));
1532 }
1533 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1534 }
1535 }
1536 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1537 WB_END
1538
1539 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1540 ResourceMark rm(THREAD);
1541 char* package_name = NULL;
1542 if (package != NULL) {
1543 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1544 }
1545 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1546 WB_END
1547
1548 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1549 ResourceMark rm(THREAD);
1550 char* package_name = NULL;
1551 if (package != NULL) {
1552 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1553 }
1554 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1555 WB_END
1556
1557 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1558 ResourceMark rm(THREAD);
1559 char* package_name = NULL;
1560 if (package != NULL) {
1561 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1562 }
1563 Modules::add_module_exports(module, package_name, NULL, CHECK);
1564 WB_END
1565
1566 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1567 Modules::add_reads_module(from_module, source_module, CHECK);
1568 WB_END
1569
1570 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1571 if (inc < 0) {
1572 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1573 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1574 }
1575
1576 jlong max_size_t = (jlong) ((size_t) -1);
1577 if (inc > max_size_t) {
1578 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1579 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1580 }
1581
1582 size_t new_cap_until_GC = 0;
1583 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1584 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1585 if (!success) {
1586 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1587 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1588 "due to contention with another thread");
1589 }
1590 return (jlong) new_cap_until_GC;
1591 WB_END
1592
1593 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1594 return (jlong) MetaspaceGC::capacity_until_GC();
1595 WB_END
1596
1597 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1598 return MetaspaceGC::should_concurrent_collect();
1599 WB_END
1600
1601 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1602 return (jlong)Metaspace::reserve_alignment();
1603 WB_END
1604
1605 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1606 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1607 Monitor::_safepoint_check_always :
1608 Monitor::_safepoint_check_never;
1609 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1610 attemptedNoSafepointValue == JNI_TRUE);
1611 WB_END
1612
1613 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1614 oop obj_oop = JNIHandles::resolve(obj);
1615 return (jboolean) obj_oop->mark()->has_monitor();
1616 WB_END
1617
1618 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1619 VM_ForceSafepoint force_safepoint_op;
1620 VMThread::execute(&force_safepoint_op);
1621 WB_END
1622
1623 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1624 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1625 return (jlong) ik->constants();
1626 WB_END
1627
1628 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1629 return ConstantPool::CPCACHE_INDEX_TAG;
1630 WB_END
1631
1632 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1633 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1634 ConstantPool* cp = ik->constants();
1635 if (cp->cache() == NULL) {
1636 return -1;
1637 }
1638 return cp->cache()->length();
1639 WB_END
1640
1641 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1642 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1643 ConstantPool* cp = ik->constants();
1644 if (cp->cache() == NULL) {
1645 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1646 }
1647 jint cpci = index;
1648 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1649 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1650 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1651 }
1652 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1653 return cpi;
1654 WB_END
1655
1656 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1657 return ConstantPool::encode_invokedynamic_index(index);
1658 WB_END
1659
1660 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1661 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1662 VMThread::execute(&clear_ics);
1663 WB_END
1664
1665 template <typename T>
1666 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1667 assert(value != NULL, "sanity");
1668 if (method == NULL || name == NULL) {
1669 return false;
1670 }
1671 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1672 CHECK_JNI_EXCEPTION_(env, false);
1673 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1674 // can't be in VM when we call JNI
1675 ThreadToNativeFromVM ttnfv(thread);
1676 const char* flag_name = env->GetStringUTFChars(name, NULL);
1677 CHECK_JNI_EXCEPTION_(env, false);
1678 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1679 env->ReleaseStringUTFChars(name, flag_name);
1680 return result;
1681 }
1682
1683 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1684 bool result;
1685 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1686 // can't be in VM when we call JNI
1687 ThreadToNativeFromVM ttnfv(thread);
1688 return booleanBox(thread, env, result);
1689 }
1690 return NULL;
1691 WB_END
1692
1693 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1694 intx result;
1695 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1696 // can't be in VM when we call JNI
1697 ThreadToNativeFromVM ttnfv(thread);
1698 return longBox(thread, env, result);
1699 }
1700 return NULL;
1701 WB_END
1702
1703 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1704 uintx result;
1705 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1706 // can't be in VM when we call JNI
1707 ThreadToNativeFromVM ttnfv(thread);
1708 return longBox(thread, env, result);
1709 }
1710 return NULL;
1711 WB_END
1712
1713 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1714 double result;
1715 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1716 // can't be in VM when we call JNI
1717 ThreadToNativeFromVM ttnfv(thread);
1718 return doubleBox(thread, env, result);
1719 }
1720 return NULL;
1721 WB_END
1722
1723 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1724 ccstr ccstrResult;
1725 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1726 // can't be in VM when we call JNI
1727 ThreadToNativeFromVM ttnfv(thread);
1728 jstring result = env->NewStringUTF(ccstrResult);
1729 CHECK_JNI_EXCEPTION_(env, NULL);
1730 return result;
1731 }
1732 return NULL;
1733 WB_END
1734
1735 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1736 oop obj_oop = JNIHandles::resolve(obj);
1737 return oopDesc::is_archive_object(obj_oop);
1738 WB_END
1739
1740 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1741 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1742 WB_END
1743
1744 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1745 return !StringTable::shared_string_mapped();
1746 WB_END
1747
1748 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1749 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1750 if (k->is_instance_klass()) {
1751 InstanceKlass *ik = InstanceKlass::cast(k);
1752 ConstantPool *cp = ik->constants();
1753 objArrayOop refs = cp->resolved_references();
1754 return (jobject)JNIHandles::make_local(env, refs);
1755 } else {
1756 return NULL;
1757 }
1758 WB_END
1759
1760 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1761 return MetaspaceShared::open_archive_heap_region_mapped();
1762 WB_END
1763
1764 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1765 #if INCLUDE_CDS
1766 # ifdef _LP64
1767 if (!UseCompressedOops || !UseCompressedClassPointers) {
1768 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1769 return false;
1770 }
1771 # endif // _LP64
1772 return true;
1773 #else
1774 return false;
1775 #endif // INCLUDE_CDS
1776 WB_END
1777
1778 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1779 return MetaspaceShared::is_heap_object_archiving_allowed();
1780 WB_END
1781
1782
1783 #if INCLUDE_CDS
1784
1785 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1786 ResourceMark rm;
1787 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1788 int result = CDSOffsets::find_offset(c_name);
1789 return (jint)result;
1790 WB_END
1791
1792 #endif // INCLUDE_CDS
1793
1794 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1795 class TraceSelfClosure : public ThreadClosure {
1796 jint _num_threads_completed;
1797
1798 void do_thread(Thread* th) {
1799 assert(th->is_Java_thread(), "sanity");
1800 JavaThread* jt = (JavaThread*)th;
1801 ResourceMark rm;
1802
1803 jt->print_on(tty);
1804 jt->print_stack_on(tty);
1805 tty->cr();
1806 Atomic::inc(&_num_threads_completed);
1807 }
1808
1809 public:
1810 TraceSelfClosure() : _num_threads_completed(0) {}
1811
1812 jint num_threads_completed() const { return _num_threads_completed; }
1813 };
1814 TraceSelfClosure tsc;
1815
1816 if (all_threads) {
1817 Handshake::execute(&tsc);
1818 } else {
1819 oop thread_oop = JNIHandles::resolve(thread_handle);
1820 if (thread_oop != NULL) {
1821 JavaThread* target = java_lang_Thread::thread(thread_oop);
1822 Handshake::execute(&tsc, target);
1823 }
1824 }
1825 return tsc.num_threads_completed();
1826 WB_END
1827
1828 //Some convenience methods to deal with objects from java
1829 int WhiteBox::offset_for_field(const char* field_name, oop object,
1830 Symbol* signature_symbol) {
1831 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1832 Thread* THREAD = Thread::current();
1833
1834 //Get the class of our object
1835 Klass* arg_klass = object->klass();
1836 //Turn it into an instance-klass
1837 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1838
1839 //Create symbols to look for in the class
1840 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1841 THREAD);
1842
1843 //To be filled in with an offset of the field we're looking for
1844 fieldDescriptor fd;
1845
1846 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1847 if (res == NULL) {
1848 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1849 name_symbol->as_C_string());
1850 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1851 }
1852
1853 //fetch the field at the offset we've found
1854 int dest_offset = fd.offset();
1855
1856 return dest_offset;
1857 }
1858
1859
1860 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1861 int offset = offset_for_field(field_name, object,
1862 vmSymbols::string_signature());
1863 oop string = object->obj_field(offset);
1864 if (string == NULL) {
1865 return NULL;
1866 }
1867 const char* ret = java_lang_String::as_utf8_string(string);
1868 return ret;
1869 }
1870
1871 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1872 int offset =
1873 offset_for_field(field_name, object, vmSymbols::bool_signature());
1874 bool ret = (object->bool_field(offset) == JNI_TRUE);
1875 return ret;
1876 }
1877
1878 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1879 ResourceMark rm;
1880 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1881
1882 // one by one registration natives for exception catching
1883 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1884 CHECK_JNI_EXCEPTION(env);
1885 for (int i = 0, n = method_count; i < n; ++i) {
1886 // Skip dummy entries
1887 if (method_array[i].fnPtr == NULL) continue;
1888 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1889 jthrowable throwable_obj = env->ExceptionOccurred();
1890 if (throwable_obj != NULL) {
1891 env->ExceptionClear();
1892 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1893 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1894 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1895 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1896 method_array[i].name, method_array[i].signature);
1897 }
1898 } else {
1899 // Registration failed unexpectedly.
1900 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1901 method_array[i].name, method_array[i].signature);
1902 env->UnregisterNatives(wbclass);
1903 break;
1904 }
1905 }
1906 }
1907 }
1908
1909 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1910 // can't be in VM when we call JNI
1911 ThreadToNativeFromVM ttnfv(thread);
1912 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1913 CHECK_JNI_EXCEPTION_(env, 0);
1914 int ret;
1915 {
1916 ThreadInVMfromNative ttvfn(thread); // back to VM
1917 ret = DirectivesParser::parse_string(dir, tty);
1918 }
1919 env->ReleaseStringUTFChars(compDirect, dir);
1920 // -1 for error parsing directive. Return 0 as number of directives added.
1921 if (ret == -1) {
1922 ret = 0;
1923 }
1924 return (jint) ret;
1925 WB_END
1926
1927 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1928 DirectivesStack::pop(count);
1929 WB_END
1930
1931 // Checks that the library libfile has the noexecstack bit set.
1932 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1933 jboolean ret = false;
1934 #ifdef LINUX
1935 // Can't be in VM when we call JNI.
1936 ThreadToNativeFromVM ttnfv(thread);
1937 const char* lf = env->GetStringUTFChars(libfile, NULL);
1938 CHECK_JNI_EXCEPTION_(env, 0);
1939 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1940 env->ReleaseStringUTFChars(libfile, lf);
1941 #endif
1942 return ret;
1943 WB_END
1944
1945 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1946 LINUX_ONLY(return OSContainer::is_containerized();)
1947 return false;
1948 WB_END
1949
1950 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1951 os::print_os_info(tty);
1952 WB_END
1953
1954 // Elf decoder
1955 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1956 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1957 ElfFile::_do_not_cache_elf_section = true;
1958 #endif
1959 WB_END
1960
1961
1962 #define CC (char*)
1963
1964 static JNINativeMethod methods[] = {
1965 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1966 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1967 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1968 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1969 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1970 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1971 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1972 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1973 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1974 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1975 {CC"parseCommandLine0",
1976 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1977 (void*) &WB_ParseCommandLine
1978 },
1979 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1980 (void*)&WB_AddToBootstrapClassLoaderSearch},
1981 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1982 (void*)&WB_AddToSystemClassLoaderSearch},
1983 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1984 (void*)&WB_GetCompressedOopsMaxHeapSize},
1985 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1986 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1987 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1988 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1989 #if INCLUDE_CDS
1990 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1991 #endif
1992 #if INCLUDE_ALL_GCS
1993 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1994 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1995 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1996 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1997 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1998 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1999 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2000 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2001 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2002 (void*)&WB_G1AuxiliaryMemoryUsage },
2003 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2004 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2005 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2006 #endif // INCLUDE_ALL_GCS
2007 #if INCLUDE_NMT
2008 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2009 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2010 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2011 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2012 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2013 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2014 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2015 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2016 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2017 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2018 #endif // INCLUDE_NMT
2019 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2020 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2021 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2022 (void*)&WB_DeoptimizeMethod },
2023 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2024 (void*)&WB_IsMethodCompiled },
2025 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2026 (void*)&WB_IsMethodCompilable},
2027 {CC"isMethodQueuedForCompilation0",
2028 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2029 {CC"isIntrinsicAvailable0",
2030 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2031 (void*)&WB_IsIntrinsicAvailable},
2032 {CC"makeMethodNotCompilable0",
2033 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2034 {CC"testSetDontInlineMethod0",
2035 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2036 {CC"getMethodCompilationLevel0",
2037 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2038 {CC"getMethodEntryBci0",
2039 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2040 {CC"getCompileQueueSize",
2041 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2042 {CC"testSetForceInlineMethod0",
2043 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2044 {CC"enqueueMethodForCompilation0",
2045 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2046 {CC"enqueueInitializerForCompilation0",
2047 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2048 {CC"clearMethodState0",
2049 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2050 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2051 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2052 {CC"matchesMethod",
2053 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2054 (void*)&WB_MatchesMethod},
2055 {CC"matchesInline",
2056 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2057 (void*)&WB_MatchesInline},
2058 {CC"shouldPrintAssembly",
2059 CC"(Ljava/lang/reflect/Executable;I)Z",
2060 (void*)&WB_ShouldPrintAssembly},
2061
2062 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2063 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2064 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2065 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2066 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2067 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2068 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2069 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2070 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2071 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2072 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2073 (void*)&WB_SetStringVMFlag},
2074 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2075 (void*)&WB_GetBooleanVMFlag},
2076 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2077 (void*)&WB_GetIntVMFlag},
2078 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2079 (void*)&WB_GetUintVMFlag},
2080 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2081 (void*)&WB_GetIntxVMFlag},
2082 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2083 (void*)&WB_GetUintxVMFlag},
2084 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2085 (void*)&WB_GetUint64VMFlag},
2086 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2087 (void*)&WB_GetSizeTVMFlag},
2088 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2089 (void*)&WB_GetDoubleVMFlag},
2090 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2091 (void*)&WB_GetStringVMFlag},
2092 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2093 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2094 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2095 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2096 {CC"allocateMetaspace",
2097 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2098 {CC"freeMetaspace",
2099 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2100 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2101 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2102 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2103 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2104 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2105 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2106 (void*)&WB_GetNMethod },
2107 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2108 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2109 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2110 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2111 {CC"getCompilationActivityMode",
2112 CC"()I", (void*)&WB_GetCompilationActivityMode},
2113 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2114 (void*)&WB_GetMethodData },
2115 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2116 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2117 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2118 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2119 (void*)&WB_DefineModule },
2120 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2121 (void*)&WB_AddModuleExports },
2122 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2123 (void*)&WB_AddReadsModule },
2124 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2125 (void*)&WB_AddModuleExportsToAllUnnamed },
2126 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2127 (void*)&WB_AddModuleExportsToAll },
2128 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2129 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2130 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2131 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2132 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2133 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2134 {CC"remapInstructionOperandFromCPCache0",
2135 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2136 {CC"encodeConstantPoolIndyIndex0",
2137 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2138 {CC"getMethodBooleanOption",
2139 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2140 (void*)&WB_GetMethodBooleaneOption},
2141 {CC"getMethodIntxOption",
2142 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2143 (void*)&WB_GetMethodIntxOption},
2144 {CC"getMethodUintxOption",
2145 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2146 (void*)&WB_GetMethodUintxOption},
2147 {CC"getMethodDoubleOption",
2148 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2149 (void*)&WB_GetMethodDoubleOption},
2150 {CC"getMethodStringOption",
2151 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2152 (void*)&WB_GetMethodStringOption},
2153 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2154 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2155 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2156 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2157 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2158 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2159 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2160
2161 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2162 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2163 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2164 (void*)&WB_AddCompilerDirective },
2165 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2166 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2167 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2168 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2169 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2170 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2171 (void*)&WB_GetConcurrentGCPhases},
2172 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2173 (void*)&WB_RequestConcurrentGCPhase},
2174 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2175 (void*)&WB_CheckLibSpecifiesNoexecstack},
2176 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2177 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2178 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2179 };
2180
2181
2182 #undef CC
2183
2184 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2185 {
2186 if (WhiteBoxAPI) {
2187 // Make sure that wbclass is loaded by the null classloader
2188 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2189 Handle loader(THREAD, ik->class_loader());
2190 if (loader.is_null()) {
2191 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2192 WhiteBox::set_used();
2193 }
2194 }
2195 }
2196 JVM_END