1 /*
2 * Copyright (c) 2012, 2019, 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/classLoaderDataGraph.hpp"
30 #include "classfile/modules.hpp"
31 #include "classfile/protectionDomainCache.hpp"
32 #include "classfile/stringTable.hpp"
33 #include "code/codeCache.hpp"
34 #include "compiler/methodMatcher.hpp"
35 #include "compiler/directivesParser.hpp"
36 #include "gc/shared/gcConfig.hpp"
37 #include "gc/shared/genCollectedHeap.hpp"
38 #include "jvmtifiles/jvmtiEnv.hpp"
39 #include "memory/heapShared.inline.hpp"
40 #include "memory/metaspaceShared.hpp"
41 #include "memory/metadataFactory.hpp"
42 #include "memory/iterator.inline.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "memory/universe.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/array.hpp"
47 #include "oops/compressedOops.inline.hpp"
48 #include "oops/constantPool.inline.hpp"
49 #include "oops/method.inline.hpp"
50 #include "oops/objArrayKlass.hpp"
51 #include "oops/objArrayOop.inline.hpp"
52 #include "oops/oop.inline.hpp"
53 #include "oops/objArrayOop.inline.hpp"
54 #include "oops/typeArrayOop.inline.hpp"
55 #include "prims/resolvedMethodTable.hpp"
56 #include "prims/wbtestmethods/parserTests.hpp"
57 #include "prims/whitebox.inline.hpp"
58 #include "runtime/arguments.hpp"
59 #include "runtime/compilationPolicy.hpp"
60 #include "runtime/deoptimization.hpp"
61 #include "runtime/fieldDescriptor.inline.hpp"
62 #include "runtime/flags/jvmFlag.hpp"
63 #include "runtime/frame.inline.hpp"
64 #include "runtime/handles.inline.hpp"
65 #include "runtime/handshake.hpp"
66 #include "runtime/interfaceSupport.inline.hpp"
67 #include "runtime/javaCalls.hpp"
68 #include "runtime/jniHandles.inline.hpp"
69 #include "runtime/os.hpp"
70 #include "runtime/sweeper.hpp"
71 #include "runtime/thread.hpp"
72 #include "runtime/threadSMR.hpp"
73 #include "runtime/vm_version.hpp"
74 #include "services/memoryService.hpp"
75 #include "utilities/align.hpp"
76 #include "utilities/debug.hpp"
77 #include "utilities/elfFile.hpp"
78 #include "utilities/exceptions.hpp"
79 #include "utilities/macros.hpp"
80 #if INCLUDE_CDS
81 #include "prims/cdsoffsets.hpp"
82 #endif // INCLUDE_CDS
83 #if INCLUDE_G1GC
84 #include "gc/g1/g1CollectedHeap.inline.hpp"
85 #include "gc/g1/g1ConcurrentMark.hpp"
86 #include "gc/g1/g1ConcurrentMarkThread.hpp"
87 #include "gc/g1/heapRegionRemSet.hpp"
88 #include "gc/g1/heterogeneousHeapRegionManager.hpp"
89 #endif // INCLUDE_G1GC
90 #if INCLUDE_PARALLELGC
91 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
92 #include "gc/parallel/adjoiningGenerations.hpp"
93 #endif // INCLUDE_PARALLELGC
94 #if INCLUDE_NMT
95 #include "services/mallocSiteTable.hpp"
96 #include "services/memTracker.hpp"
97 #include "utilities/nativeCallStack.hpp"
98 #endif // INCLUDE_NMT
99 #if INCLUDE_AOT
100 #include "aot/aotLoader.hpp"
101 #endif // INCLUDE_AOT
102
103 #ifdef LINUX
104 #include "osContainer_linux.hpp"
105 #endif
106
107 #define SIZE_T_MAX_VALUE ((size_t) -1)
108
109 #define CHECK_JNI_EXCEPTION_(env, value) \
110 do { \
111 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
112 THREAD->clear_pending_jni_exception_check(); \
113 if (HAS_PENDING_EXCEPTION) { \
114 return(value); \
115 } \
116 } while (0)
117
118 #define CHECK_JNI_EXCEPTION(env) \
119 do { \
120 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
121 THREAD->clear_pending_jni_exception_check(); \
122 if (HAS_PENDING_EXCEPTION) { \
123 return; \
124 } \
125 } while (0)
126
127 bool WhiteBox::_used = false;
128 volatile bool WhiteBox::compilation_locked = false;
129
130 class VM_WhiteBoxOperation : public VM_Operation {
131 public:
132 VM_WhiteBoxOperation() { }
133 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
134 bool allow_nested_vm_operations() const { return true; }
135 };
136
137
138 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
139 return (jlong)(void*)JNIHandles::resolve(obj);
140 WB_END
141
142 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
143 return heapOopSize;
144 WB_END
145
146 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
147 return os::vm_page_size();
148 WB_END
149
150 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
151 return os::vm_allocation_granularity();
152 WB_END
153
154 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
155 return os::large_page_size();
156 WB_END
157
158 class WBIsKlassAliveClosure : public LockedClassesDo {
159 Symbol* _name;
160 bool _found;
161 public:
162 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
163
164 void do_klass(Klass* k) {
165 if (_found) return;
166 Symbol* ksym = k->name();
167 if (ksym->fast_compare(_name) == 0) {
168 _found = true;
169 }
170 }
171
172 bool found() const {
173 return _found;
174 }
175 };
176
177 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
178 oop h_name = JNIHandles::resolve(name);
179 if (h_name == NULL) return false;
180 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
181 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
182
183 WBIsKlassAliveClosure closure(sym);
184 ClassLoaderDataGraph::classes_do(&closure);
185
186 return closure.found();
187 WB_END
188
189 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
190 oop h_name = JNIHandles::resolve(name);
191 if (h_name == NULL) return false;
192 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_0);
193 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
194 return (jint)sym->refcount();
195 WB_END
196
197
198 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
199 #if INCLUDE_JVMTI
200 ResourceMark rm;
201 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
202 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
203 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
204 assert(err == JVMTI_ERROR_NONE, "must not fail");
205 #endif
206 }
207 WB_END
208
209 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
210 #if INCLUDE_JVMTI
211 ResourceMark rm;
212 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
213 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
214 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
215 assert(err == JVMTI_ERROR_NONE, "must not fail");
216 #endif
217 }
218 WB_END
219
220
221 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
222 return (jlong)Arguments::max_heap_for_compressed_oops();
223 }
224 WB_END
225
226 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
227 CollectorPolicy * p = Universe::heap()->collector_policy();
228 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
229 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
230 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
231 p->space_alignment(), p->heap_alignment());
232 }
233 WB_END
234
235 #ifndef PRODUCT
236 // Forward declaration
237 void TestReservedSpace_test();
238 void TestReserveMemorySpecial_test();
239 void TestVirtualSpace_test();
240 void TestMetaspaceUtils_test();
241 #endif
242
243 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
244 #ifndef PRODUCT
245 TestReservedSpace_test();
246 TestReserveMemorySpecial_test();
247 TestVirtualSpace_test();
248 TestMetaspaceUtils_test();
249 #endif
250 WB_END
251
252 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
253 size_t granularity = os::vm_allocation_granularity();
254 ReservedHeapSpace rhs(100 * granularity, granularity, false);
255 VirtualSpace vs;
256 vs.initialize(rhs, 50 * granularity);
257
258 // Check if constraints are complied
259 if (!( UseCompressedOops && rhs.base() != NULL &&
260 Universe::narrow_oop_base() != NULL &&
261 Universe::narrow_oop_use_implicit_null_checks() )) {
262 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
263 "\tUseCompressedOops is %d\n"
264 "\trhs.base() is " PTR_FORMAT "\n"
265 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
266 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
267 UseCompressedOops,
268 p2i(rhs.base()),
269 p2i(Universe::narrow_oop_base()),
270 Universe::narrow_oop_use_implicit_null_checks());
271 return;
272 }
273 tty->print_cr("Reading from no access area... ");
274 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
275 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
276 WB_END
277
278 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
279 size_t magnitude, size_t iterations) {
280 size_t granularity = os::vm_allocation_granularity();
281 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
282 VirtualSpace vs;
283 if (!vs.initialize(rhs, 0)) {
284 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
285 return 3;
286 }
287
288 int seed = os::random();
289 tty->print_cr("Random seed is %d", seed);
290 os::init_random(seed);
291
292 for (size_t i = 0; i < iterations; i++) {
293
294 // Whether we will shrink or grow
295 bool shrink = os::random() % 2L == 0;
296
297 // Get random delta to resize virtual space
298 size_t delta = (size_t)os::random() % magnitude;
299
300 // If we are about to shrink virtual space below zero, then expand instead
301 if (shrink && vs.committed_size() < delta) {
302 shrink = false;
303 }
304
305 // Resizing by delta
306 if (shrink) {
307 vs.shrink_by(delta);
308 } else {
309 // If expanding fails expand_by will silently return false
310 vs.expand_by(delta, true);
311 }
312 }
313 return 0;
314 }
315
316 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
317 jlong reserved_space_size, jlong magnitude, jlong iterations))
318 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
319 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
320 iterations);
321 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
322 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
323 return 1;
324 }
325
326 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
327 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
328 if (sizeof(size_t) < sizeof(jlong)) {
329 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
330 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
331 || iterations > size_t_max_value) {
332 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
333 return 2;
334 }
335 }
336
337 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
338 (size_t) magnitude, (size_t) iterations);
339 WB_END
340
341 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
342 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
343 WB_END
344
345 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
346 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
347 WB_END
348
349 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
350 return GCConfig::is_gc_selected_ergonomically();
351 WB_END
352
353 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
354 oop p = JNIHandles::resolve(obj);
355 #if INCLUDE_G1GC
356 if (UseG1GC) {
357 G1CollectedHeap* g1h = G1CollectedHeap::heap();
358 const HeapRegion* hr = g1h->heap_region_containing(p);
359 if (hr == NULL) {
360 return false;
361 }
362 return !(hr->is_young());
363 }
364 #endif
365 #if INCLUDE_PARALLELGC
366 if (UseParallelGC) {
367 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
368 return !psh->is_in_young(p);
369 }
370 #endif
371 #if INCLUDE_ZGC
372 if (UseZGC) {
373 return Universe::heap()->is_in(p);
374 }
375 #endif
376 GenCollectedHeap* gch = GenCollectedHeap::heap();
377 return !gch->is_in_young(p);
378 WB_END
379
380 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
381 oop p = JNIHandles::resolve(obj);
382 return Universe::heap()->obj_size(p) * HeapWordSize;
383 WB_END
384
385 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
386 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
387 return (jlong)alignment;
388 WB_END
389
390 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
391 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
392 return (jlong)alignment;
393 WB_END
394
395 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
396 return Universe::heap()->supports_concurrent_phase_control();
397 WB_END
398
399 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
400 Handle h_name(THREAD, JNIHandles::resolve(name));
401 ResourceMark rm;
402 const char* c_name = java_lang_String::as_utf8_string(h_name());
403 return Universe::heap()->request_concurrent_phase(c_name);
404 WB_END
405
406 #if INCLUDE_G1GC
407
408 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
409 if (UseG1GC) {
410 G1CollectedHeap* g1h = G1CollectedHeap::heap();
411 oop result = JNIHandles::resolve(obj);
412 const HeapRegion* hr = g1h->heap_region_containing(result);
413 return hr->is_humongous();
414 }
415 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
416 WB_END
417
418 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
419 if (UseG1GC) {
420 G1CollectedHeap* g1h = G1CollectedHeap::heap();
421 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
422 return hr->is_humongous();
423 }
424 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
425 WB_END
426
427 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
428 if (UseG1GC) {
429 G1CollectedHeap* g1h = G1CollectedHeap::heap();
430 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
431 return hr->is_free();
432 }
433 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
434 WB_END
435
436 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
437 if (UseG1GC) {
438 G1CollectedHeap* g1h = G1CollectedHeap::heap();
439 size_t nr = g1h->max_regions();
440 return (jlong)nr;
441 }
442 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
443 WB_END
444
445 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
446 if (UseG1GC) {
447 G1CollectedHeap* g1h = G1CollectedHeap::heap();
448 size_t nr = g1h->num_free_regions();
449 return (jlong)nr;
450 }
451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
452 WB_END
453
454 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
455 if (UseG1GC) {
456 G1CollectedHeap* g1h = G1CollectedHeap::heap();
457 return g1h->concurrent_mark()->cm_thread()->during_cycle();
458 }
459 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
460 WB_END
461
462 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
463 if (UseG1GC) {
464 G1CollectedHeap* g1h = G1CollectedHeap::heap();
465 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
466 g1h->collect(GCCause::_wb_conc_mark);
467 return true;
468 }
469 return false;
470 }
471 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
472 WB_END
473
474 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
475 if (UseG1GC) {
476 return (jint)HeapRegion::GrainBytes;
477 }
478 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
479 WB_END
480
481 #endif // INCLUDE_G1GC
482
483 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
484 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o))
485 #if INCLUDE_G1GC
486 if (UseG1GC) {
487 G1CollectedHeap* g1h = G1CollectedHeap::heap();
488 if (g1h->g1_collector_policy()->is_hetero_heap()) {
489 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram();
490 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
491 } else {
492 return (jlong)g1h->base();
493 }
494 }
495 #endif // INCLUDE_G1GC
496 #if INCLUDE_PARALLELGC
497 if (UseParallelGC) {
498 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
499 if (AllocateOldGenAt != NULL) {
500 MemRegion reserved = ps_heap->young_gen()->reserved();
501 return (jlong)reserved.start();
502 } else {
503 return (jlong)ps_heap->base();
504 }
505 }
506 #endif // INCLUDE_PARALLELGC
507 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC");
508 WB_END
509
510 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o))
511 #if INCLUDE_G1GC
512 if (UseG1GC) {
513 G1CollectedHeap* g1h = G1CollectedHeap::heap();
514 if (g1h->g1_collector_policy()->is_hetero_heap()) {
515 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram();
516 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
517 } else {
518 return (jlong)g1h->base() + g1h->collector_policy()->max_heap_byte_size();
519 }
520 }
521 #endif // INCLUDE_G1GC
522 #if INCLUDE_PARALLELGC
523 if (UseParallelGC) {
524 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
525 if (AllocateOldGenAt != NULL) {
526 MemRegion reserved = ps_heap->young_gen()->reserved();
527 return (jlong)reserved.end();
528 } else {
529 return (jlong)ps_heap->reserved_region().end();
530 }
531 }
532 #endif // INCLUDE_PARALLELGC
533 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC");
534 WB_END
535
536 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o))
537 #if INCLUDE_G1GC
538 if (UseG1GC) {
539 G1CollectedHeap* g1h = G1CollectedHeap::heap();
540 if (g1h->g1_collector_policy()->is_hetero_heap()) {
541 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
542 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
543 } else {
544 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
545 }
546 }
547 #endif // INCLUDE_G1GC
548 #if INCLUDE_PARALLELGC
549 if (UseParallelGC) {
550 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
551 if (AllocateOldGenAt != NULL) {
552 MemRegion reserved = ps_heap->old_gen()->reserved();
553 return (jlong)reserved.start();
554 } else {
555 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
556 }
557 }
558 #endif // INCLUDE_PARALLELGC
559 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC");
560 WB_END
561
562 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o))
563 #if INCLUDE_G1GC
564 if (UseG1GC) {
565 G1CollectedHeap* g1h = G1CollectedHeap::heap();
566 if (g1h->g1_collector_policy()->is_hetero_heap()) {
567 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
568 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
569 } else {
570 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
571 }
572 }
573 #endif // INCLUDE_G1GC
574 #if INCLUDE_PARALLELGC
575 if (UseParallelGC) {
576 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
577 if (AllocateOldGenAt != NULL) {
578 MemRegion reserved = ps_heap->old_gen()->reserved();
579 return (jlong)reserved.end();
580 } else {
581 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
582 }
583 }
584 #endif // INCLUDE_PARALLELGC
585 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC");
586 WB_END
587
588 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
589
590 #if INCLUDE_PARALLELGC
591
592 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
593 if (UseParallelGC) {
594 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
595 }
596 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
597 WB_END
598
599 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
600 if (UseParallelGC) {
601 return ParallelScavengeHeap::heap()->generation_alignment();
602 }
603 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
604 WB_END
605
606 #endif // INCLUDE_PARALLELGC
607
608 #if INCLUDE_G1GC
609
610 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
611 if (UseG1GC) {
612 ResourceMark rm(THREAD);
613 G1CollectedHeap* g1h = G1CollectedHeap::heap();
614 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
615 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
616 return JNIHandles::make_local(env, h());
617 }
618 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
619 WB_END
620
621 class OldRegionsLivenessClosure: public HeapRegionClosure {
622
623 private:
624 const int _liveness;
625 size_t _total_count;
626 size_t _total_memory;
627 size_t _total_memory_to_free;
628
629 public:
630 OldRegionsLivenessClosure(int liveness) :
631 _liveness(liveness),
632 _total_count(0),
633 _total_memory(0),
634 _total_memory_to_free(0) { }
635
636 size_t total_count() { return _total_count; }
637 size_t total_memory() { return _total_memory; }
638 size_t total_memory_to_free() { return _total_memory_to_free; }
639
640 bool do_heap_region(HeapRegion* r) {
641 if (r->is_old()) {
642 size_t prev_live = r->marked_bytes();
643 size_t live = r->live_bytes();
644 size_t size = r->used();
645 size_t reg_size = HeapRegion::GrainBytes;
646 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
647 _total_memory += size;
648 ++_total_count;
649 if (size == reg_size) {
650 // we don't include non-full regions since they are unlikely included in mixed gc
651 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
652 _total_memory_to_free += size - prev_live;
653 }
654 }
655 }
656 return false;
657 }
658 };
659
660
661 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
662 if (!UseG1GC) {
663 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
664 }
665 if (liveness < 0) {
666 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
667 }
668
669 G1CollectedHeap* g1h = G1CollectedHeap::heap();
670 OldRegionsLivenessClosure rli(liveness);
671 g1h->heap_region_iterate(&rli);
672
673 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
674 result->long_at_put(0, rli.total_count());
675 result->long_at_put(1, rli.total_memory());
676 result->long_at_put(2, rli.total_memory_to_free());
677 return (jlongArray) JNIHandles::make_local(env, result);
678 WB_END
679
680 #endif // INCLUDE_G1GC
681
682 #if INCLUDE_NMT
683 // Alloc memory using the test memory type so that we can use that to see if
684 // NMT picks it up correctly
685 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
686 jlong addr = 0;
687 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
688 return addr;
689 WB_END
690
691 // Alloc memory with pseudo call stack. The test can create psudo malloc
692 // allocation site to stress the malloc tracking.
693 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
694 address pc = (address)(size_t)pseudo_stack;
695 NativeCallStack stack(&pc, 1);
696 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
697 WB_END
698
699 // Alloc memory with pseudo call stack and specific memory type.
700 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
701 address pc = (address)(size_t)pseudo_stack;
702 NativeCallStack stack(&pc, 1);
703 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
704 WB_END
705
706 // Free the memory allocated by NMTAllocTest
707 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
708 os::free((void*)(uintptr_t)mem);
709 WB_END
710
711 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
712 jlong addr = 0;
713
714 addr = (jlong)(uintptr_t)os::reserve_memory(size);
715 MemTracker::record_virtual_memory_type((address)addr, mtTest);
716
717 return addr;
718 WB_END
719
720 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
721 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
722 MemTracker::record_virtual_memory_type((address)addr, mtTest);
723
724 return addr;
725 WB_END
726
727 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
728 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
729 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
730 WB_END
731
732 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
733 os::uncommit_memory((char *)(uintptr_t)addr, size);
734 WB_END
735
736 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
737 os::release_memory((char *)(uintptr_t)addr, size);
738 WB_END
739
740 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
741 // Test that we can downgrade NMT levels but not upgrade them.
742 if (MemTracker::tracking_level() == NMT_off) {
743 MemTracker::transition_to(NMT_off);
744 return MemTracker::tracking_level() == NMT_off;
745 } else {
746 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
747 MemTracker::transition_to(NMT_summary);
748 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
749
750 // Can't go to detail once NMT is set to summary.
751 MemTracker::transition_to(NMT_detail);
752 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
753
754 // Shutdown sets tracking level to minimal.
755 MemTracker::shutdown();
756 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
757
758 // Once the tracking level is minimal, we cannot increase to summary.
759 // The code ignores this request instead of asserting because if the malloc site
760 // table overflows in another thread, it tries to change the code to summary.
761 MemTracker::transition_to(NMT_summary);
762 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
763
764 // Really can never go up to detail, verify that the code would never do this.
765 MemTracker::transition_to(NMT_detail);
766 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
767 return MemTracker::tracking_level() == NMT_minimal;
768 }
769 WB_END
770
771 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
772 int hash_size = MallocSiteTable::hash_buckets();
773 assert(hash_size > 0, "NMT hash_size should be > 0");
774 return (jint)hash_size;
775 WB_END
776 #endif // INCLUDE_NMT
777
778 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
779 assert(method != NULL, "method should not be null");
780 ThreadToNativeFromVM ttn(thread);
781 return env->FromReflectedMethod(method);
782 }
783
784 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
785 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
786 private:
787 int _result;
788 const bool _make_not_entrant;
789 public:
790 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
791 _result(0), _make_not_entrant(make_not_entrant) { }
792 int result() const { return _result; }
793
794 void doit() {
795 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
796 if (t->has_last_Java_frame()) {
797 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
798 frame* f = fst.current();
799 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
800 RegisterMap* reg_map = fst.register_map();
801 Deoptimization::deoptimize(t, *f, reg_map);
802 if (_make_not_entrant) {
803 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
804 assert(cm != NULL, "sanity check");
805 cm->make_not_entrant();
806 }
807 ++_result;
808 }
809 }
810 }
811 }
812 }
813 };
814
815 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
816 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
817 VMThread::execute(&op);
818 return op.result();
819 WB_END
820
821 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
822 MutexLockerEx mu(Compile_lock);
823 CodeCache::mark_all_nmethods_for_deoptimization();
824 VM_Deoptimize op;
825 VMThread::execute(&op);
826 WB_END
827
828 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
829 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
830 int result = 0;
831 CHECK_JNI_EXCEPTION_(env, result);
832 MutexLockerEx mu(Compile_lock);
833 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
834 if (is_osr) {
835 result += mh->mark_osr_nmethods();
836 } else if (mh->code() != NULL) {
837 mh->code()->mark_for_deoptimization();
838 ++result;
839 }
840 result += CodeCache::mark_for_deoptimization(mh());
841 if (result > 0) {
842 VM_Deoptimize op;
843 VMThread::execute(&op);
844 }
845 return result;
846 WB_END
847
848 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
849 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
850 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
851 MutexLockerEx mu(Compile_lock);
852 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
853 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
854 if (code == NULL) {
855 return JNI_FALSE;
856 }
857 return (code->is_alive() && !code->is_marked_for_deoptimization());
858 WB_END
859
860 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
861 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
862 return false;
863 }
864 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
865 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
866 MutexLockerEx mu(Compile_lock);
867 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
868 if (is_osr) {
869 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
870 } else {
871 return CompilationPolicy::can_be_compiled(mh, comp_level);
872 }
873 WB_END
874
875 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
876 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
877 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
878 MutexLockerEx mu(Compile_lock);
879 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
880 return mh->queued_for_compilation();
881 WB_END
882
883 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
884 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
885 return false; // Intrinsic is not available on a non-existent compilation level.
886 }
887 jmethodID method_id, compilation_context_id;
888 method_id = reflected_method_to_jmid(thread, env, method);
889 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
890 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
891
892 DirectiveSet* directive;
893 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
894 assert(comp != NULL, "compiler not available");
895 if (compilation_context != NULL) {
896 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
898 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
899 directive = DirectivesStack::getMatchingDirective(cch, comp);
900 } else {
901 // Calling with NULL matches default directive
902 directive = DirectivesStack::getDefaultDirective(comp);
903 }
904 bool result = comp->is_intrinsic_available(mh, directive);
905 DirectivesStack::release(directive);
906 return result;
907 WB_END
908
909 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
910 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
911 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
912 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
913 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
914 return (code != NULL ? code->comp_level() : CompLevel_none);
915 WB_END
916
917 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
918 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
919 CHECK_JNI_EXCEPTION(env);
920 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
921 if (is_osr) {
922 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
923 } else {
924 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
925 }
926 WB_END
927
928 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
929 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
932 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
933 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
934 WB_END
935
936 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
937 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
938 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
939 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
940 bool result = mh->dont_inline();
941 mh->set_dont_inline(value == JNI_TRUE);
942 return result;
943 WB_END
944
945 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
946 if (comp_level == CompLevel_any) {
947 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
948 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
949 } else {
950 return CompileBroker::queue_size(comp_level);
951 }
952 WB_END
953
954 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
955 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
956 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
957 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
958 bool result = mh->force_inline();
959 mh->set_force_inline(value == JNI_TRUE);
960 return result;
961 WB_END
962
963 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
964 // Screen for unavailable/bad comp level or null method
965 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
966 if (method == NULL) {
967 tty->print_cr("WB error: request to compile NULL method");
968 return false;
969 }
970 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
971 tty->print_cr("WB error: invalid compilation level %d", comp_level);
972 return false;
973 }
974 if (comp == NULL) {
975 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
976 return false;
977 }
978
979 // Check if compilation is blocking
980 methodHandle mh(THREAD, method);
981 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
982 bool is_blocking = !directive->BackgroundCompilationOption;
983 DirectivesStack::release(directive);
984
985 // Compile method and check result
986 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
987 MutexLockerEx mu(Compile_lock);
988 bool is_queued = mh->queued_for_compilation();
989 if ((!is_blocking && is_queued) || nm != NULL) {
990 return true;
991 }
992 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
993 mh->print_short_name(tty);
994 tty->cr();
995 if (is_blocking && is_queued) {
996 tty->print_cr("WB error: blocking compilation is still in queue!");
997 }
998 return false;
999 }
1000
1001 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1002 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1003 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1004 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1005 WB_END
1006
1007 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1008 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1009 Method* clinit = ik->class_initializer();
1010 if (clinit == NULL) {
1011 return false;
1012 }
1013 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1014 WB_END
1015
1016 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1017 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1018 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1019
1020 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1021 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1022 bool result = directive->PrintAssemblyOption;
1023 DirectivesStack::release(directive);
1024
1025 return result;
1026 WB_END
1027
1028 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1029 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1030 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1031
1032 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1033
1034 ResourceMark rm;
1035 const char* error_msg = NULL;
1036 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1037 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1038
1039 if (m == NULL) {
1040 assert(error_msg != NULL, "Always have an error message");
1041 tty->print_cr("Got error: %s", error_msg);
1042 return -1; // Pattern failed
1043 }
1044
1045 // Pattern works - now check if it matches
1046 int result;
1047 if (m->match(mh, InlineMatcher::force_inline)) {
1048 result = 2; // Force inline match
1049 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1050 result = 1; // Dont inline match
1051 } else {
1052 result = 0; // No match
1053 }
1054 delete m;
1055 return result;
1056 WB_END
1057
1058 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1059 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1060 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1061
1062 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1063
1064 ResourceMark rm;
1065 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1066
1067 const char* error_msg = NULL;
1068
1069 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
1070 if (m == NULL) {
1071 assert(error_msg != NULL, "Must have error_msg");
1072 tty->print_cr("Got error: %s", error_msg);
1073 return -1;
1074 }
1075
1076 // Pattern works - now check if it matches
1077 int result = m->matches(mh);
1078 delete m;
1079 assert(result == 0 || result == 1, "Result out of range");
1080 return result;
1081 WB_END
1082
1083 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1084 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1085 CHECK_JNI_EXCEPTION(env);
1086 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1087 MutexLockerEx mu(Compile_lock);
1088 MethodData* mdo = mh->method_data();
1089 MethodCounters* mcs = mh->method_counters();
1090
1091 if (mdo != NULL) {
1092 mdo->init();
1093 ResourceMark rm;
1094 int arg_count = mdo->method()->size_of_parameters();
1095 for (int i = 0; i < arg_count; i++) {
1096 mdo->set_arg_modified(i, 0);
1097 }
1098 MutexLockerEx mu(mdo->extra_data_lock());
1099 mdo->clean_method_data(/*always_clean*/true);
1100 }
1101
1102 mh->clear_not_c1_compilable();
1103 mh->clear_not_c2_compilable();
1104 mh->clear_not_c2_osr_compilable();
1105 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1106 if (mcs != NULL) {
1107 mcs->backedge_counter()->init();
1108 mcs->invocation_counter()->init();
1109 mcs->set_interpreter_invocation_count(0);
1110 mcs->set_interpreter_throwout_count(0);
1111
1112 #ifdef TIERED
1113 mcs->set_rate(0.0F);
1114 mh->set_prev_event_count(0);
1115 mh->set_prev_time(0);
1116 #endif
1117 }
1118 WB_END
1119
1120 template <typename T>
1121 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1122 if (name == NULL) {
1123 return false;
1124 }
1125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1126 const char* flag_name = env->GetStringUTFChars(name, NULL);
1127 CHECK_JNI_EXCEPTION_(env, false);
1128 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1129 env->ReleaseStringUTFChars(name, flag_name);
1130 return (result == JVMFlag::SUCCESS);
1131 }
1132
1133 template <typename T>
1134 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1135 if (name == NULL) {
1136 return false;
1137 }
1138 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1139 const char* flag_name = env->GetStringUTFChars(name, NULL);
1140 CHECK_JNI_EXCEPTION_(env, false);
1141 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1142 env->ReleaseStringUTFChars(name, flag_name);
1143 return (result == JVMFlag::SUCCESS);
1144 }
1145
1146 template <typename T>
1147 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1148 ResourceMark rm(thread);
1149 jclass clazz = env->FindClass(name->as_C_string());
1150 CHECK_JNI_EXCEPTION_(env, NULL);
1151 jmethodID methodID = env->GetStaticMethodID(clazz,
1152 vmSymbols::valueOf_name()->as_C_string(),
1153 sig->as_C_string());
1154 CHECK_JNI_EXCEPTION_(env, NULL);
1155 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1156 CHECK_JNI_EXCEPTION_(env, NULL);
1157 return result;
1158 }
1159
1160 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1161 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1162 }
1163 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1164 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1165 }
1166 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1167 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1168 }
1169 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1170 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1171 }*/
1172 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1173 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1174 }
1175
1176 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1177 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1178 const char* flag_name = env->GetStringUTFChars(name, NULL);
1179 CHECK_JNI_EXCEPTION_(env, NULL);
1180 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1181 env->ReleaseStringUTFChars(name, flag_name);
1182 return result;
1183 }
1184
1185 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1186 JVMFlag* flag = getVMFlag(thread, env, name);
1187 return (flag != NULL) && flag->is_constant_in_binary();
1188 WB_END
1189
1190 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1191 JVMFlag* flag = getVMFlag(thread, env, name);
1192 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1193 WB_END
1194
1195 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1196 bool result;
1197 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1198 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1199 return booleanBox(thread, env, result);
1200 }
1201 return NULL;
1202 WB_END
1203
1204 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1205 int result;
1206 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1207 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1208 return longBox(thread, env, result);
1209 }
1210 return NULL;
1211 WB_END
1212
1213 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1214 uint result;
1215 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1216 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1217 return longBox(thread, env, result);
1218 }
1219 return NULL;
1220 WB_END
1221
1222 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1223 intx result;
1224 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1225 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1226 return longBox(thread, env, result);
1227 }
1228 return NULL;
1229 WB_END
1230
1231 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1232 uintx result;
1233 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1234 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1235 return longBox(thread, env, result);
1236 }
1237 return NULL;
1238 WB_END
1239
1240 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1241 uint64_t result;
1242 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1243 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1244 return longBox(thread, env, result);
1245 }
1246 return NULL;
1247 WB_END
1248
1249 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1250 size_t result;
1251 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1252 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1253 return longBox(thread, env, result);
1254 }
1255 return NULL;
1256 WB_END
1257
1258 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1259 double result;
1260 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1261 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1262 return doubleBox(thread, env, result);
1263 }
1264 return NULL;
1265 WB_END
1266
1267 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1268 ccstr ccstrResult;
1269 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1270 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1271 jstring result = env->NewStringUTF(ccstrResult);
1272 CHECK_JNI_EXCEPTION_(env, NULL);
1273 return result;
1274 }
1275 return NULL;
1276 WB_END
1277
1278 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1279 bool result = value == JNI_TRUE ? true : false;
1280 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1281 WB_END
1282
1283 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1284 int result = value;
1285 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1286 WB_END
1287
1288 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1289 uint result = value;
1290 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1291 WB_END
1292
1293 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1294 intx result = value;
1295 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1296 WB_END
1297
1298 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1299 uintx result = value;
1300 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1301 WB_END
1302
1303 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1304 uint64_t result = value;
1305 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1306 WB_END
1307
1308 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1309 size_t result = value;
1310 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1311 WB_END
1312
1313 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1314 double result = value;
1315 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1316 WB_END
1317
1318 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1319 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1320 const char* ccstrValue;
1321 if (value == NULL) {
1322 ccstrValue = NULL;
1323 }
1324 else {
1325 ccstrValue = env->GetStringUTFChars(value, NULL);
1326 CHECK_JNI_EXCEPTION(env);
1327 }
1328 ccstr ccstrResult = ccstrValue;
1329 bool needFree;
1330 {
1331 ThreadInVMfromNative ttvfn(thread); // back to VM
1332 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1333 }
1334 if (value != NULL) {
1335 env->ReleaseStringUTFChars(value, ccstrValue);
1336 }
1337 if (needFree) {
1338 FREE_C_HEAP_ARRAY(char, ccstrResult);
1339 }
1340 WB_END
1341
1342 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1343 WhiteBox::compilation_locked = true;
1344 WB_END
1345
1346 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1347 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1348 WhiteBox::compilation_locked = false;
1349 mo.notify_all();
1350 WB_END
1351
1352 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1353 // Force a code cache sweep and block until it finished
1354 NMethodSweeper::force_sweep();
1355 WB_END
1356
1357 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1358 ResourceMark rm(THREAD);
1359 int len;
1360 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1361 return (StringTable::lookup(name, len) != NULL);
1362 WB_END
1363
1364 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1365 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1366 Universe::heap()->collect(GCCause::_wb_full_gc);
1367 #if INCLUDE_G1GC
1368 if (UseG1GC) {
1369 // Needs to be cleared explicitly for G1
1370 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1371 }
1372 #endif // INCLUDE_G1GC
1373 WB_END
1374
1375 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1376 Universe::heap()->collect(GCCause::_wb_young_gc);
1377 WB_END
1378
1379 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1380 // static+volatile in order to force the read to happen
1381 // (not be eliminated by the compiler)
1382 static char c;
1383 static volatile char* p;
1384
1385 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1386 if (p == NULL) {
1387 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1388 }
1389
1390 c = *p;
1391 WB_END
1392
1393 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1394 const char* features = VM_Version::features_string();
1395 ThreadToNativeFromVM ttn(thread);
1396 jstring features_string = env->NewStringUTF(features);
1397
1398 CHECK_JNI_EXCEPTION_(env, NULL);
1399
1400 return features_string;
1401 WB_END
1402
1403 int WhiteBox::get_blob_type(const CodeBlob* code) {
1404 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1405 if (code->is_aot()) {
1406 return -1;
1407 }
1408 return CodeCache::get_code_heap(code)->code_blob_type();
1409 }
1410
1411 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1412 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1413 return CodeCache::get_code_heap(blob_type);
1414 }
1415
1416 struct CodeBlobStub {
1417 CodeBlobStub(const CodeBlob* blob) :
1418 name(os::strdup(blob->name())),
1419 size(blob->size()),
1420 blob_type(WhiteBox::get_blob_type(blob)),
1421 address((jlong) blob) { }
1422 ~CodeBlobStub() { os::free((void*) name); }
1423 const char* const name;
1424 const jint size;
1425 const jint blob_type;
1426 const jlong address;
1427 };
1428
1429 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1430 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1431 CHECK_JNI_EXCEPTION_(env, NULL);
1432 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1433
1434 jstring name = env->NewStringUTF(cb->name);
1435 CHECK_JNI_EXCEPTION_(env, NULL);
1436 env->SetObjectArrayElement(result, 0, name);
1437
1438 jobject obj = integerBox(thread, env, cb->size);
1439 CHECK_JNI_EXCEPTION_(env, NULL);
1440 env->SetObjectArrayElement(result, 1, obj);
1441
1442 obj = integerBox(thread, env, cb->blob_type);
1443 CHECK_JNI_EXCEPTION_(env, NULL);
1444 env->SetObjectArrayElement(result, 2, obj);
1445
1446 obj = longBox(thread, env, cb->address);
1447 CHECK_JNI_EXCEPTION_(env, NULL);
1448 env->SetObjectArrayElement(result, 3, obj);
1449
1450 return result;
1451 }
1452
1453 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1454 ResourceMark rm(THREAD);
1455 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1456 CHECK_JNI_EXCEPTION_(env, NULL);
1457 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1458 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1459 jobjectArray result = NULL;
1460 if (code == NULL) {
1461 return result;
1462 }
1463 int comp_level = code->comp_level();
1464 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1465
1466 ThreadToNativeFromVM ttn(thread);
1467 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1468 CHECK_JNI_EXCEPTION_(env, NULL);
1469 result = env->NewObjectArray(5, clazz, NULL);
1470 if (result == NULL) {
1471 return result;
1472 }
1473
1474 CodeBlobStub stub(code);
1475 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1476 CHECK_JNI_EXCEPTION_(env, NULL);
1477 env->SetObjectArrayElement(result, 0, codeBlob);
1478
1479 jobject level = integerBox(thread, env, comp_level);
1480 CHECK_JNI_EXCEPTION_(env, NULL);
1481 env->SetObjectArrayElement(result, 1, level);
1482
1483 jbyteArray insts = env->NewByteArray(insts_size);
1484 CHECK_JNI_EXCEPTION_(env, NULL);
1485 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1486 env->SetObjectArrayElement(result, 2, insts);
1487
1488 jobject id = integerBox(thread, env, code->compile_id());
1489 CHECK_JNI_EXCEPTION_(env, NULL);
1490 env->SetObjectArrayElement(result, 3, id);
1491
1492 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1493 CHECK_JNI_EXCEPTION_(env, NULL);
1494 env->SetObjectArrayElement(result, 4, entry_point);
1495
1496 return result;
1497 WB_END
1498
1499 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1500 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1501 BufferBlob* blob;
1502 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1503 if (full_size < size) {
1504 full_size += align_up(size - full_size, oopSize);
1505 }
1506 {
1507 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1508 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1509 if (blob != NULL) {
1510 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1511 }
1512 }
1513 // Track memory usage statistic after releasing CodeCache_lock
1514 MemoryService::track_code_cache_memory_usage();
1515 return blob;
1516 }
1517
1518 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1519 if (size < 0) {
1520 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1521 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1522 }
1523 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1524 WB_END
1525
1526 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1527 if (addr == 0) {
1528 return;
1529 }
1530 BufferBlob::free((BufferBlob*) addr);
1531 WB_END
1532
1533 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1534 ResourceMark rm;
1535 GrowableArray<CodeBlobStub*> blobs;
1536 {
1537 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1538 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1539 if (heap == NULL) {
1540 return NULL;
1541 }
1542 for (CodeBlob* cb = (CodeBlob*) heap->first();
1543 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1544 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1545 new (stub) CodeBlobStub(cb);
1546 blobs.append(stub);
1547 }
1548 }
1549 ThreadToNativeFromVM ttn(thread);
1550 jobjectArray result = NULL;
1551 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1552 CHECK_JNI_EXCEPTION_(env, NULL);
1553 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1554 CHECK_JNI_EXCEPTION_(env, NULL);
1555 if (result == NULL) {
1556 return result;
1557 }
1558 int i = 0;
1559 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1560 it != blobs.end(); ++it) {
1561 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1562 CHECK_JNI_EXCEPTION_(env, NULL);
1563 env->SetObjectArrayElement(result, i, obj);
1564 CHECK_JNI_EXCEPTION_(env, NULL);
1565 ++i;
1566 }
1567 return result;
1568 WB_END
1569
1570 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1571 return CompileBroker::get_compilation_activity_mode();
1572 WB_END
1573
1574 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1575 if (addr == 0) {
1576 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1577 "WB_GetCodeBlob: addr is null");
1578 }
1579 ThreadToNativeFromVM ttn(thread);
1580 CodeBlobStub stub((CodeBlob*) addr);
1581 return codeBlob2objectArray(thread, env, &stub);
1582 WB_END
1583
1584 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1585 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1586 CHECK_JNI_EXCEPTION_(env, 0);
1587 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1588 return (jlong) mh->method_data();
1589 WB_END
1590
1591 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1592 return (jlong) Thread::current()->stack_size();
1593 WB_END
1594
1595 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1596 JavaThread* t = JavaThread::current();
1597 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1598 WB_END
1599
1600
1601 int WhiteBox::array_bytes_to_length(size_t bytes) {
1602 return Array<u1>::bytes_to_length(bytes);
1603 }
1604
1605 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1606 if (size < 0) {
1607 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1608 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1609 }
1610
1611 oop class_loader_oop = JNIHandles::resolve(class_loader);
1612 ClassLoaderData* cld = class_loader_oop != NULL
1613 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1614 : ClassLoaderData::the_null_class_loader_data();
1615
1616 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1617
1618 return (jlong)(uintptr_t)metadata;
1619 WB_END
1620
1621 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1622 oop class_loader_oop = JNIHandles::resolve(class_loader);
1623 ClassLoaderData* cld = class_loader_oop != NULL
1624 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1625 : ClassLoaderData::the_null_class_loader_data();
1626
1627 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1628 WB_END
1629
1630 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1631 jstring version, jstring location, jobjectArray packages))
1632 ResourceMark rm(THREAD);
1633
1634 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1635 objArrayHandle packages_h(THREAD, packages_oop);
1636 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1637
1638 char** pkgs = NULL;
1639 if (num_packages > 0) {
1640 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1641 for (int x = 0; x < num_packages; x++) {
1642 oop pkg_str = packages_h->obj_at(x);
1643 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1644 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1645 err_msg("Bad package name"));
1646 }
1647 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1648 }
1649 }
1650 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1651 WB_END
1652
1653 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1654 ResourceMark rm(THREAD);
1655 char* package_name = NULL;
1656 if (package != NULL) {
1657 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1658 }
1659 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1660 WB_END
1661
1662 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1663 ResourceMark rm(THREAD);
1664 char* package_name = NULL;
1665 if (package != NULL) {
1666 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1667 }
1668 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1669 WB_END
1670
1671 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1672 ResourceMark rm(THREAD);
1673 char* package_name = NULL;
1674 if (package != NULL) {
1675 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1676 }
1677 Modules::add_module_exports(module, package_name, NULL, CHECK);
1678 WB_END
1679
1680 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1681 Modules::add_reads_module(from_module, source_module, CHECK);
1682 WB_END
1683
1684 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1685 if (inc < 0) {
1686 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1687 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1688 }
1689
1690 jlong max_size_t = (jlong) ((size_t) -1);
1691 if (inc > max_size_t) {
1692 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1693 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1694 }
1695
1696 size_t new_cap_until_GC = 0;
1697 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1698 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1699 if (!success) {
1700 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1701 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1702 "due to contention with another thread");
1703 }
1704 return (jlong) new_cap_until_GC;
1705 WB_END
1706
1707 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1708 return (jlong) MetaspaceGC::capacity_until_GC();
1709 WB_END
1710
1711 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1712 return MetaspaceGC::should_concurrent_collect();
1713 WB_END
1714
1715 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1716 return (jlong)Metaspace::reserve_alignment();
1717 WB_END
1718
1719 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1720 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1721 Monitor::_safepoint_check_always :
1722 Monitor::_safepoint_check_never;
1723 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1724 attemptedNoSafepointValue == JNI_TRUE);
1725 WB_END
1726
1727 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1728 oop obj_oop = JNIHandles::resolve(obj);
1729 return (jboolean) obj_oop->mark()->has_monitor();
1730 WB_END
1731
1732 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1733 VM_ForceSafepoint force_safepoint_op;
1734 VMThread::execute(&force_safepoint_op);
1735 WB_END
1736
1737 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1738 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1739 return (jlong) ik->constants();
1740 WB_END
1741
1742 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1743 return ConstantPool::CPCACHE_INDEX_TAG;
1744 WB_END
1745
1746 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1747 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1748 ConstantPool* cp = ik->constants();
1749 if (cp->cache() == NULL) {
1750 return -1;
1751 }
1752 return cp->cache()->length();
1753 WB_END
1754
1755 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1756 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1757 ConstantPool* cp = ik->constants();
1758 if (cp->cache() == NULL) {
1759 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1760 }
1761 jint cpci = index;
1762 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1763 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1764 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1765 }
1766 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1767 return cpi;
1768 WB_END
1769
1770 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1771 return ConstantPool::encode_invokedynamic_index(index);
1772 WB_END
1773
1774 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
1775 oop aoop = JNIHandles::resolve(thing);
1776 if (!aoop->is_instance()) {
1777 return NULL;
1778 }
1779 instanceHandle ih(THREAD, (instanceOop) aoop);
1780 InstanceKlass* klass = InstanceKlass::cast(aoop->klass());
1781 if (klass->nonstatic_oop_map_count() == 0) {
1782 return NULL;
1783 }
1784 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
1785 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
1786 int oop_count = 0;
1787 while (map < end) {
1788 oop_count += map->count();
1789 map++;
1790 }
1791
1792 objArrayOop result_array =
1793 oopFactory::new_objArray(SystemDictionary::Object_klass(), oop_count, CHECK_NULL);
1794 map = klass->start_of_nonstatic_oop_maps();
1795 instanceOop ioop = ih();
1796 int index = 0;
1797 while (map < end) {
1798 int offset = map->offset();
1799 for (unsigned int j = 0; j < map->count(); j++) {
1800 result_array->obj_at_put(index++, ioop->obj_field(offset));
1801 offset += heapOopSize;
1802 }
1803 map++;
1804 }
1805 return (jobjectArray)JNIHandles::make_local(env, result_array);
1806 WB_END
1807
1808 class CollectOops : public BasicOopIterateClosure {
1809 public:
1810 GrowableArray<Handle>* array;
1811
1812 objArrayOop create_results(TRAPS) {
1813 objArrayOop result_array =
1814 oopFactory::new_objArray(SystemDictionary::Object_klass(), array->length(), CHECK_NULL);
1815 for (int i = 0 ; i < array->length(); i++) {
1816 result_array->obj_at_put(i, array->at(i)());
1817 }
1818 return result_array;
1819 }
1820
1821 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
1822 return (jobjectArray)JNIHandles::make_local(env, create_results(THREAD));
1823 }
1824
1825 void add_oop(oop o) {
1826 // Value might be oop, but JLS can't see as Object, just iterate through it...
1827 if (o != NULL && o->is_value()) {
1828 o->oop_iterate(this);
1829 } else {
1830 array->append(Handle(Thread::current(), o));
1831 }
1832 }
1833
1834 void do_oop(oop* o) { add_oop(*o); }
1835 void do_oop(narrowOop* v) { add_oop(CompressedOops::decode(*v)); }
1836 };
1837
1838
1839 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
1840 ResourceMark rm(THREAD);
1841 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1842 CollectOops collectOops;
1843 collectOops.array = array;
1844
1845 JNIHandles::resolve(thing)->oop_iterate(&collectOops);
1846
1847 return collectOops.create_jni_result(env, THREAD);
1848 WB_END
1849
1850 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
1851 ResourceMark rm(THREAD);
1852 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1853 CollectOops collectOops;
1854 collectOops.array = array;
1855 StackFrameStream sfs(thread);
1856 while (depth > 0) { // Skip the native WB API frame
1857 sfs.next();
1858 frame* f = sfs.current();
1859 f->oops_do(&collectOops, NULL, sfs.register_map());
1860 depth--;
1861 }
1862 return collectOops.create_jni_result(env, THREAD);
1863 WB_END
1864
1865
1866 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1867 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1868 VMThread::execute(&clear_ics);
1869 WB_END
1870
1871 template <typename T>
1872 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1873 assert(value != NULL, "sanity");
1874 if (method == NULL || name == NULL) {
1875 return false;
1876 }
1877 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1878 CHECK_JNI_EXCEPTION_(env, false);
1879 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1880 // can't be in VM when we call JNI
1881 ThreadToNativeFromVM ttnfv(thread);
1882 const char* flag_name = env->GetStringUTFChars(name, NULL);
1883 CHECK_JNI_EXCEPTION_(env, false);
1884 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1885 env->ReleaseStringUTFChars(name, flag_name);
1886 return result;
1887 }
1888
1889 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1890 bool result;
1891 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1892 // can't be in VM when we call JNI
1893 ThreadToNativeFromVM ttnfv(thread);
1894 return booleanBox(thread, env, result);
1895 }
1896 return NULL;
1897 WB_END
1898
1899 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1900 intx result;
1901 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1902 // can't be in VM when we call JNI
1903 ThreadToNativeFromVM ttnfv(thread);
1904 return longBox(thread, env, result);
1905 }
1906 return NULL;
1907 WB_END
1908
1909 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1910 uintx result;
1911 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1912 // can't be in VM when we call JNI
1913 ThreadToNativeFromVM ttnfv(thread);
1914 return longBox(thread, env, result);
1915 }
1916 return NULL;
1917 WB_END
1918
1919 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1920 double result;
1921 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1922 // can't be in VM when we call JNI
1923 ThreadToNativeFromVM ttnfv(thread);
1924 return doubleBox(thread, env, result);
1925 }
1926 return NULL;
1927 WB_END
1928
1929 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1930 ccstr ccstrResult;
1931 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1932 // can't be in VM when we call JNI
1933 ThreadToNativeFromVM ttnfv(thread);
1934 jstring result = env->NewStringUTF(ccstrResult);
1935 CHECK_JNI_EXCEPTION_(env, NULL);
1936 return result;
1937 }
1938 return NULL;
1939 WB_END
1940
1941 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1942 const char* p = Arguments::get_default_shared_archive_path();
1943 ThreadToNativeFromVM ttn(thread);
1944 jstring path_string = env->NewStringUTF(p);
1945
1946 CHECK_JNI_EXCEPTION_(env, NULL);
1947
1948 return path_string;
1949 WB_END
1950
1951 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1952 return UseSharedSpaces;
1953 WB_END
1954
1955 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1956 oop obj_oop = JNIHandles::resolve(obj);
1957 return HeapShared::is_archived_object(obj_oop);
1958 WB_END
1959
1960 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1961 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1962 WB_END
1963
1964 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1965 return !HeapShared::closed_archive_heap_region_mapped();
1966 WB_END
1967
1968 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1969 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1970 if (k->is_instance_klass()) {
1971 InstanceKlass *ik = InstanceKlass::cast(k);
1972 ConstantPool *cp = ik->constants();
1973 objArrayOop refs = cp->resolved_references();
1974 return (jobject)JNIHandles::make_local(env, refs);
1975 } else {
1976 return NULL;
1977 }
1978 WB_END
1979
1980 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1981 return HeapShared::open_archive_heap_region_mapped();
1982 WB_END
1983
1984 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1985 #if INCLUDE_CDS
1986 # ifdef _LP64
1987 if (!UseCompressedOops || !UseCompressedClassPointers) {
1988 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1989 return false;
1990 }
1991 # endif // _LP64
1992 return true;
1993 #else
1994 return false;
1995 #endif // INCLUDE_CDS
1996 WB_END
1997
1998 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1999 return HeapShared::is_heap_object_archiving_allowed();
2000 WB_END
2001
2002
2003 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
2004 #if INCLUDE_JFR
2005 return true;
2006 #else
2007 return false;
2008 #endif // INCLUDE_JFR
2009 WB_END
2010
2011 #if INCLUDE_CDS
2012
2013 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
2014 ResourceMark rm;
2015 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2016 int result = CDSOffsets::find_offset(c_name);
2017 return (jint)result;
2018 WB_END
2019
2020 #endif // INCLUDE_CDS
2021
2022 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2023 class TraceSelfClosure : public ThreadClosure {
2024 jint _num_threads_completed;
2025
2026 void do_thread(Thread* th) {
2027 assert(th->is_Java_thread(), "sanity");
2028 JavaThread* jt = (JavaThread*)th;
2029 ResourceMark rm;
2030
2031 jt->print_on(tty);
2032 jt->print_stack_on(tty);
2033 tty->cr();
2034 Atomic::inc(&_num_threads_completed);
2035 }
2036
2037 public:
2038 TraceSelfClosure() : _num_threads_completed(0) {}
2039
2040 jint num_threads_completed() const { return _num_threads_completed; }
2041 };
2042 TraceSelfClosure tsc;
2043
2044 if (all_threads) {
2045 Handshake::execute(&tsc);
2046 } else {
2047 oop thread_oop = JNIHandles::resolve(thread_handle);
2048 if (thread_oop != NULL) {
2049 JavaThread* target = java_lang_Thread::thread(thread_oop);
2050 Handshake::execute(&tsc, target);
2051 }
2052 }
2053 return tsc.num_threads_completed();
2054 WB_END
2055
2056 //Some convenience methods to deal with objects from java
2057 int WhiteBox::offset_for_field(const char* field_name, oop object,
2058 Symbol* signature_symbol) {
2059 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2060 Thread* THREAD = Thread::current();
2061
2062 //Get the class of our object
2063 Klass* arg_klass = object->klass();
2064 //Turn it into an instance-klass
2065 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2066
2067 //Create symbols to look for in the class
2068 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
2069 THREAD);
2070
2071 //To be filled in with an offset of the field we're looking for
2072 fieldDescriptor fd;
2073
2074 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2075 if (res == NULL) {
2076 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2077 name_symbol->as_C_string());
2078 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2079 }
2080
2081 //fetch the field at the offset we've found
2082 int dest_offset = fd.offset();
2083
2084 return dest_offset;
2085 }
2086
2087
2088 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2089 int offset = offset_for_field(field_name, object,
2090 vmSymbols::string_signature());
2091 oop string = object->obj_field(offset);
2092 if (string == NULL) {
2093 return NULL;
2094 }
2095 const char* ret = java_lang_String::as_utf8_string(string);
2096 return ret;
2097 }
2098
2099 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2100 int offset =
2101 offset_for_field(field_name, object, vmSymbols::bool_signature());
2102 bool ret = (object->bool_field(offset) == JNI_TRUE);
2103 return ret;
2104 }
2105
2106 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2107 ResourceMark rm;
2108 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2109
2110 // one by one registration natives for exception catching
2111 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2112 CHECK_JNI_EXCEPTION(env);
2113 for (int i = 0, n = method_count; i < n; ++i) {
2114 // Skip dummy entries
2115 if (method_array[i].fnPtr == NULL) continue;
2116 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2117 jthrowable throwable_obj = env->ExceptionOccurred();
2118 if (throwable_obj != NULL) {
2119 env->ExceptionClear();
2120 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2121 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2122 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2123 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
2124 method_array[i].name, method_array[i].signature);
2125 }
2126 } else {
2127 // Registration failed unexpectedly.
2128 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
2129 method_array[i].name, method_array[i].signature);
2130 env->UnregisterNatives(wbclass);
2131 break;
2132 }
2133 }
2134 }
2135 }
2136
2137 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2138 // can't be in VM when we call JNI
2139 ThreadToNativeFromVM ttnfv(thread);
2140 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2141 CHECK_JNI_EXCEPTION_(env, 0);
2142 int ret;
2143 {
2144 ThreadInVMfromNative ttvfn(thread); // back to VM
2145 ret = DirectivesParser::parse_string(dir, tty);
2146 }
2147 env->ReleaseStringUTFChars(compDirect, dir);
2148 // -1 for error parsing directive. Return 0 as number of directives added.
2149 if (ret == -1) {
2150 ret = 0;
2151 }
2152 return (jint) ret;
2153 WB_END
2154
2155 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2156 DirectivesStack::pop(count);
2157 WB_END
2158
2159 // Checks that the library libfile has the noexecstack bit set.
2160 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2161 jboolean ret = false;
2162 #ifdef LINUX
2163 // Can't be in VM when we call JNI.
2164 ThreadToNativeFromVM ttnfv(thread);
2165 const char* lf = env->GetStringUTFChars(libfile, NULL);
2166 CHECK_JNI_EXCEPTION_(env, 0);
2167 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2168 env->ReleaseStringUTFChars(libfile, lf);
2169 #endif
2170 return ret;
2171 WB_END
2172
2173 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2174 LINUX_ONLY(return OSContainer::is_containerized();)
2175 return false;
2176 WB_END
2177
2178 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2179 os::print_os_info(tty);
2180 WB_END
2181
2182 // Elf decoder
2183 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2184 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2185 ElfFile::_do_not_cache_elf_section = true;
2186 #endif
2187 WB_END
2188
2189 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o))
2190 return (jint) ResolvedMethodTable::removed_entries_count();
2191 WB_END
2192
2193 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2194 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2195 WB_END
2196
2197 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o))
2198 jint result = 0;
2199 #if INCLUDE_AOT
2200 result = (jint) AOTLoader::heaps_count();
2201 #endif
2202 return result;
2203 WB_END
2204
2205 #define CC (char*)
2206
2207 static JNINativeMethod methods[] = {
2208 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2209 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2210 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2211 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2212 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2213 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2214 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2215 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2216 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2217 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2218 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2219 {CC"parseCommandLine0",
2220 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2221 (void*) &WB_ParseCommandLine
2222 },
2223 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2224 (void*)&WB_AddToBootstrapClassLoaderSearch},
2225 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2226 (void*)&WB_AddToSystemClassLoaderSearch},
2227 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2228 (void*)&WB_GetCompressedOopsMaxHeapSize},
2229 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2230 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2231 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2232 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2233 #if INCLUDE_CDS
2234 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2235 #endif
2236 #if INCLUDE_G1GC
2237 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2238 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2239 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2240 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2241 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2242 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2243 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2244 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2245 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2246 (void*)&WB_G1AuxiliaryMemoryUsage },
2247 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2248 #endif // INCLUDE_G1GC
2249 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
2250 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart },
2251 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd },
2252 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart },
2253 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd },
2254 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
2255 #if INCLUDE_PARALLELGC
2256 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2257 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2258 #endif
2259 #if INCLUDE_NMT
2260 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2261 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2262 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2263 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2264 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2265 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2266 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2267 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2268 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2269 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2270 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2271 #endif // INCLUDE_NMT
2272 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2273 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2274 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2275 (void*)&WB_DeoptimizeMethod },
2276 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2277 (void*)&WB_IsMethodCompiled },
2278 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2279 (void*)&WB_IsMethodCompilable},
2280 {CC"isMethodQueuedForCompilation0",
2281 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2282 {CC"isIntrinsicAvailable0",
2283 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2284 (void*)&WB_IsIntrinsicAvailable},
2285 {CC"makeMethodNotCompilable0",
2286 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2287 {CC"testSetDontInlineMethod0",
2288 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2289 {CC"getMethodCompilationLevel0",
2290 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2291 {CC"getMethodEntryBci0",
2292 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2293 {CC"getCompileQueueSize",
2294 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2295 {CC"testSetForceInlineMethod0",
2296 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2297 {CC"enqueueMethodForCompilation0",
2298 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2299 {CC"enqueueInitializerForCompilation0",
2300 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2301 {CC"clearMethodState0",
2302 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2303 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2304 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2305 {CC"matchesMethod",
2306 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2307 (void*)&WB_MatchesMethod},
2308 {CC"matchesInline",
2309 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2310 (void*)&WB_MatchesInline},
2311 {CC"shouldPrintAssembly",
2312 CC"(Ljava/lang/reflect/Executable;I)Z",
2313 (void*)&WB_ShouldPrintAssembly},
2314
2315 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2316 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2317 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2318 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2319 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2320 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2321 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2322 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2323 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2324 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2325 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2326 (void*)&WB_SetStringVMFlag},
2327 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2328 (void*)&WB_GetBooleanVMFlag},
2329 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2330 (void*)&WB_GetIntVMFlag},
2331 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2332 (void*)&WB_GetUintVMFlag},
2333 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2334 (void*)&WB_GetIntxVMFlag},
2335 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2336 (void*)&WB_GetUintxVMFlag},
2337 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2338 (void*)&WB_GetUint64VMFlag},
2339 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2340 (void*)&WB_GetSizeTVMFlag},
2341 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2342 (void*)&WB_GetDoubleVMFlag},
2343 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2344 (void*)&WB_GetStringVMFlag},
2345 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2346 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2347 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2348 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2349 {CC"allocateMetaspace",
2350 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2351 {CC"freeMetaspace",
2352 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2353 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2354 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2355 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2356 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2357 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2358 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2359 (void*)&WB_GetNMethod },
2360 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2361 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2362 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2363 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2364 {CC"getCompilationActivityMode",
2365 CC"()I", (void*)&WB_GetCompilationActivityMode},
2366 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2367 (void*)&WB_GetMethodData },
2368 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2369 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2370 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2371 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2372 (void*)&WB_DefineModule },
2373 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2374 (void*)&WB_AddModuleExports },
2375 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2376 (void*)&WB_AddReadsModule },
2377 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2378 (void*)&WB_AddModuleExportsToAllUnnamed },
2379 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2380 (void*)&WB_AddModuleExportsToAll },
2381 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2382 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2383 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2384 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2385 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2386 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2387 {CC"remapInstructionOperandFromCPCache0",
2388 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2389 {CC"encodeConstantPoolIndyIndex0",
2390 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2391 {CC"getObjectsViaKlassOopMaps0",
2392 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
2393 {CC"getObjectsViaOopIterator0",
2394 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
2395 {CC"getObjectsViaFrameOopIterator",
2396 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
2397 {CC"getMethodBooleanOption",
2398 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2399 (void*)&WB_GetMethodBooleaneOption},
2400 {CC"getMethodIntxOption",
2401 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2402 (void*)&WB_GetMethodIntxOption},
2403 {CC"getMethodUintxOption",
2404 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2405 (void*)&WB_GetMethodUintxOption},
2406 {CC"getMethodDoubleOption",
2407 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2408 (void*)&WB_GetMethodDoubleOption},
2409 {CC"getMethodStringOption",
2410 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2411 (void*)&WB_GetMethodStringOption},
2412 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2413 (void*)&WB_GetDefaultArchivePath},
2414 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2415 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2416 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2417 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2418 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2419 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2420 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2421 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2422 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2423
2424 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2425 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2426 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2427 (void*)&WB_AddCompilerDirective },
2428 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2429 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2430 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2431 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2432 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2433 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2434 (void*)&WB_RequestConcurrentGCPhase},
2435 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2436 (void*)&WB_CheckLibSpecifiesNoexecstack},
2437 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2438 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2439 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2440 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount },
2441 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2442 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount },
2443 };
2444
2445
2446 #undef CC
2447
2448 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2449 {
2450 if (WhiteBoxAPI) {
2451 // Make sure that wbclass is loaded by the null classloader
2452 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2453 Handle loader(THREAD, ik->class_loader());
2454 if (loader.is_null()) {
2455 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2456 WhiteBox::set_used();
2457 }
2458 }
2459 }
2460 JVM_END