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 "classfile/symbolTable.hpp"
34 #include "code/codeCache.hpp"
35 #include "compiler/methodMatcher.hpp"
36 #include "compiler/directivesParser.hpp"
37 #include "gc/shared/gcConfig.hpp"
38 #include "gc/shared/genArguments.hpp"
39 #include "gc/shared/genCollectedHeap.hpp"
40 #include "jvmtifiles/jvmtiEnv.hpp"
41 #include "memory/heapShared.inline.hpp"
42 #include "memory/metaspaceShared.hpp"
43 #include "memory/metadataFactory.hpp"
44 #include "memory/iterator.hpp"
45 #include "memory/resourceArea.hpp"
46 #include "memory/universe.hpp"
47 #include "memory/oopFactory.hpp"
48 #include "oops/array.hpp"
49 #include "oops/compressedOops.hpp"
50 #include "oops/constantPool.inline.hpp"
51 #include "oops/method.inline.hpp"
52 #include "oops/objArrayKlass.hpp"
53 #include "oops/objArrayOop.inline.hpp"
54 #include "oops/oop.inline.hpp"
55 #include "oops/typeArrayOop.inline.hpp"
56 #include "prims/resolvedMethodTable.hpp"
57 #include "prims/wbtestmethods/parserTests.hpp"
58 #include "prims/whitebox.inline.hpp"
59 #include "runtime/arguments.hpp"
60 #include "runtime/compilationPolicy.hpp"
61 #include "runtime/deoptimization.hpp"
62 #include "runtime/fieldDescriptor.inline.hpp"
63 #include "runtime/flags/jvmFlag.hpp"
64 #include "runtime/frame.inline.hpp"
65 #include "runtime/handles.inline.hpp"
66 #include "runtime/handshake.hpp"
67 #include "runtime/interfaceSupport.inline.hpp"
68 #include "runtime/javaCalls.hpp"
69 #include "runtime/jniHandles.inline.hpp"
70 #include "runtime/os.hpp"
71 #include "runtime/sweeper.hpp"
72 #include "runtime/thread.hpp"
73 #include "runtime/threadSMR.hpp"
74 #include "runtime/vm_version.hpp"
75 #include "services/memoryService.hpp"
76 #include "utilities/align.hpp"
77 #include "utilities/debug.hpp"
78 #include "utilities/elfFile.hpp"
79 #include "utilities/exceptions.hpp"
80 #include "utilities/macros.hpp"
81 #if INCLUDE_CDS
82 #include "prims/cdsoffsets.hpp"
83 #endif // INCLUDE_CDS
84 #if INCLUDE_G1GC
85 #include "gc/g1/g1Arguments.hpp"
86 #include "gc/g1/g1CollectedHeap.inline.hpp"
87 #include "gc/g1/g1ConcurrentMark.hpp"
88 #include "gc/g1/g1ConcurrentMarkThread.hpp"
89 #include "gc/g1/heapRegionRemSet.hpp"
90 #include "gc/g1/heterogeneousHeapRegionManager.hpp"
91 #endif // INCLUDE_G1GC
92 #if INCLUDE_PARALLELGC
93 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
94 #include "gc/parallel/adjoiningGenerations.hpp"
95 #endif // INCLUDE_PARALLELGC
96 #if INCLUDE_NMT
97 #include "services/mallocSiteTable.hpp"
98 #include "services/memTracker.hpp"
99 #include "utilities/nativeCallStack.hpp"
100 #endif // INCLUDE_NMT
101 #if INCLUDE_AOT
102 #include "aot/aotLoader.hpp"
103 #endif // INCLUDE_AOT
104
105 #ifdef LINUX
106 #include "osContainer_linux.hpp"
107 #endif
108
109 #define SIZE_T_MAX_VALUE ((size_t) -1)
110
111 #define CHECK_JNI_EXCEPTION_(env, value) \
112 do { \
113 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
114 THREAD->clear_pending_jni_exception_check(); \
115 if (HAS_PENDING_EXCEPTION) { \
116 return(value); \
117 } \
118 } while (0)
119
120 #define CHECK_JNI_EXCEPTION(env) \
121 do { \
122 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
123 THREAD->clear_pending_jni_exception_check(); \
124 if (HAS_PENDING_EXCEPTION) { \
125 return; \
126 } \
127 } while (0)
128
129 bool WhiteBox::_used = false;
130 volatile bool WhiteBox::compilation_locked = false;
131
132 class VM_WhiteBoxOperation : public VM_Operation {
133 public:
134 VM_WhiteBoxOperation() { }
135 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
136 bool allow_nested_vm_operations() const { return true; }
137 };
138
139
140 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
141 return (jlong)(void*)JNIHandles::resolve(obj);
142 WB_END
143
144 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
145 return heapOopSize;
146 WB_END
147
148 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
149 return os::vm_page_size();
150 WB_END
151
152 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
153 return os::vm_allocation_granularity();
154 WB_END
155
156 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
157 return os::large_page_size();
158 WB_END
159
160 class WBIsKlassAliveClosure : public LockedClassesDo {
161 Symbol* _name;
162 bool _found;
163 public:
164 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
165
166 void do_klass(Klass* k) {
167 if (_found) return;
168 Symbol* ksym = k->name();
169 if (ksym->fast_compare(_name) == 0) {
170 _found = true;
171 }
172 }
173
174 bool found() const {
175 return _found;
176 }
177 };
178
179 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
180 oop h_name = JNIHandles::resolve(name);
181 if (h_name == NULL) return false;
182 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
183 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
184
185 WBIsKlassAliveClosure closure(sym);
186 ClassLoaderDataGraph::classes_do(&closure);
187
188 return closure.found();
189 WB_END
190
191 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
192 oop h_name = JNIHandles::resolve(name);
193 if (h_name == NULL) return false;
194 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_0);
195 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
196 return (jint)sym->refcount();
197 WB_END
198
199
200 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
201 #if INCLUDE_JVMTI
202 ResourceMark rm;
203 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
204 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
205 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
206 assert(err == JVMTI_ERROR_NONE, "must not fail");
207 #endif
208 }
209 WB_END
210
211 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
212 #if INCLUDE_JVMTI
213 ResourceMark rm;
214 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
215 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
216 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
217 assert(err == JVMTI_ERROR_NONE, "must not fail");
218 #endif
219 }
220 WB_END
221
222
223 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
224 return (jlong)Arguments::max_heap_for_compressed_oops();
225 }
226 WB_END
227
228 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
229 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
230 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
231 MinHeapSize,
232 InitialHeapSize,
233 MaxHeapSize,
234 SpaceAlignment,
235 HeapAlignment);
236 }
237 WB_END
238
239 #ifndef PRODUCT
240 // Forward declaration
241 void TestReservedSpace_test();
242 void TestReserveMemorySpecial_test();
243 void TestVirtualSpace_test();
244 void TestMetaspaceUtils_test();
245 #endif
246
247 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
248 #ifndef PRODUCT
249 TestReservedSpace_test();
250 TestReserveMemorySpecial_test();
251 TestVirtualSpace_test();
252 TestMetaspaceUtils_test();
253 #endif
254 WB_END
255
256 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
257 size_t granularity = os::vm_allocation_granularity();
258 ReservedHeapSpace rhs(100 * granularity, granularity, false);
259 VirtualSpace vs;
260 vs.initialize(rhs, 50 * granularity);
261
262 // Check if constraints are complied
263 if (!( UseCompressedOops && rhs.base() != NULL &&
264 CompressedOops::base() != NULL &&
265 CompressedOops::use_implicit_null_checks() )) {
266 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
267 "\tUseCompressedOops is %d\n"
268 "\trhs.base() is " PTR_FORMAT "\n"
269 "\tCompressedOops::base() is " PTR_FORMAT "\n"
270 "\tCompressedOops::use_implicit_null_checks() is %d",
271 UseCompressedOops,
272 p2i(rhs.base()),
273 p2i(CompressedOops::base()),
274 CompressedOops::use_implicit_null_checks());
275 return;
276 }
277 tty->print_cr("Reading from no access area... ");
278 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
279 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
280 WB_END
281
282 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
283 size_t magnitude, size_t iterations) {
284 size_t granularity = os::vm_allocation_granularity();
285 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
286 VirtualSpace vs;
287 if (!vs.initialize(rhs, 0)) {
288 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
289 return 3;
290 }
291
292 int seed = os::random();
293 tty->print_cr("Random seed is %d", seed);
294 os::init_random(seed);
295
296 for (size_t i = 0; i < iterations; i++) {
297
298 // Whether we will shrink or grow
299 bool shrink = os::random() % 2L == 0;
300
301 // Get random delta to resize virtual space
302 size_t delta = (size_t)os::random() % magnitude;
303
304 // If we are about to shrink virtual space below zero, then expand instead
305 if (shrink && vs.committed_size() < delta) {
306 shrink = false;
307 }
308
309 // Resizing by delta
310 if (shrink) {
311 vs.shrink_by(delta);
312 } else {
313 // If expanding fails expand_by will silently return false
314 vs.expand_by(delta, true);
315 }
316 }
317 return 0;
318 }
319
320 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
321 jlong reserved_space_size, jlong magnitude, jlong iterations))
322 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
323 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
324 iterations);
325 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
326 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
327 return 1;
328 }
329
330 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
331 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
332 if (sizeof(size_t) < sizeof(jlong)) {
333 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
334 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
335 || iterations > size_t_max_value) {
336 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
337 return 2;
338 }
339 }
340
341 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
342 (size_t) magnitude, (size_t) iterations);
343 WB_END
344
345 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
346 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
347 WB_END
348
349 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
350 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
351 WB_END
352
353 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
354 return GCConfig::is_gc_selected_ergonomically();
355 WB_END
356
357 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
358 oop p = JNIHandles::resolve(obj);
359 #if INCLUDE_G1GC
360 if (UseG1GC) {
361 G1CollectedHeap* g1h = G1CollectedHeap::heap();
362 const HeapRegion* hr = g1h->heap_region_containing(p);
363 if (hr == NULL) {
364 return false;
365 }
366 return !(hr->is_young());
367 }
368 #endif
369 #if INCLUDE_PARALLELGC
370 if (UseParallelGC) {
371 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
372 return !psh->is_in_young(p);
373 }
374 #endif
375 #if INCLUDE_ZGC
376 if (UseZGC) {
377 return Universe::heap()->is_in(p);
378 }
379 #endif
380 GenCollectedHeap* gch = GenCollectedHeap::heap();
381 return !gch->is_in_young(p);
382 WB_END
383
384 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
385 oop p = JNIHandles::resolve(obj);
386 return Universe::heap()->obj_size(p) * HeapWordSize;
387 WB_END
388
389 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
390 return (jlong)SpaceAlignment;
391 WB_END
392
393 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
394 return (jlong)HeapAlignment;
395 WB_END
396
397 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
398 return Universe::heap()->supports_concurrent_phase_control();
399 WB_END
400
401 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
402 Handle h_name(THREAD, JNIHandles::resolve(name));
403 ResourceMark rm;
404 const char* c_name = java_lang_String::as_utf8_string(h_name());
405 return Universe::heap()->request_concurrent_phase(c_name);
406 WB_END
407
408 #if INCLUDE_G1GC
409
410 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
411 if (UseG1GC) {
412 G1CollectedHeap* g1h = G1CollectedHeap::heap();
413 oop result = JNIHandles::resolve(obj);
414 const HeapRegion* hr = g1h->heap_region_containing(result);
415 return hr->is_humongous();
416 }
417 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
418 WB_END
419
420 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
421 if (UseG1GC) {
422 G1CollectedHeap* g1h = G1CollectedHeap::heap();
423 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
424 return hr->is_humongous();
425 }
426 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
427 WB_END
428
429 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
430 if (UseG1GC) {
431 G1CollectedHeap* g1h = G1CollectedHeap::heap();
432 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
433 return hr->is_free();
434 }
435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
436 WB_END
437
438 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
439 if (UseG1GC) {
440 G1CollectedHeap* g1h = G1CollectedHeap::heap();
441 size_t nr = g1h->max_regions();
442 return (jlong)nr;
443 }
444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
445 WB_END
446
447 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
448 if (UseG1GC) {
449 G1CollectedHeap* g1h = G1CollectedHeap::heap();
450 size_t nr = g1h->num_free_regions();
451 return (jlong)nr;
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1h = G1CollectedHeap::heap();
459 return g1h->concurrent_mark()->cm_thread()->during_cycle();
460 }
461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
462 WB_END
463
464 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
465 if (UseG1GC) {
466 G1CollectedHeap* g1h = G1CollectedHeap::heap();
467 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
468 g1h->collect(GCCause::_wb_conc_mark);
469 return true;
470 }
471 return false;
472 }
473 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
474 WB_END
475
476 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
477 if (UseG1GC) {
478 return (jint)HeapRegion::GrainBytes;
479 }
480 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
481 WB_END
482
483 #endif // INCLUDE_G1GC
484
485 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
486 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o))
487 #if INCLUDE_G1GC
488 if (UseG1GC) {
489 G1CollectedHeap* g1h = G1CollectedHeap::heap();
490 if (g1h->is_heterogeneous_heap()) {
491 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram();
492 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
493 } else {
494 return (jlong)g1h->base();
495 }
496 }
497 #endif // INCLUDE_G1GC
498 #if INCLUDE_PARALLELGC
499 if (UseParallelGC) {
500 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
501 if (AllocateOldGenAt != NULL) {
502 MemRegion reserved = ps_heap->young_gen()->reserved();
503 return (jlong)reserved.start();
504 } else {
505 return (jlong)ps_heap->base();
506 }
507 }
508 #endif // INCLUDE_PARALLELGC
509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC");
510 WB_END
511
512 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o))
513 #if INCLUDE_G1GC
514 if (UseG1GC) {
515 G1CollectedHeap* g1h = G1CollectedHeap::heap();
516 if (g1h->is_heterogeneous_heap()) {
517 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram();
518 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
519 } else {
520 return (jlong)g1h->base() + G1Arguments::heap_reserved_size_bytes();
521 }
522 }
523 #endif // INCLUDE_G1GC
524 #if INCLUDE_PARALLELGC
525 if (UseParallelGC) {
526 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
527 if (AllocateOldGenAt != NULL) {
528 MemRegion reserved = ps_heap->young_gen()->reserved();
529 return (jlong)reserved.end();
530 } else {
531 return (jlong)ps_heap->reserved_region().end();
532 }
533 }
534 #endif // INCLUDE_PARALLELGC
535 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC");
536 WB_END
537
538 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o))
539 #if INCLUDE_G1GC
540 if (UseG1GC) {
541 G1CollectedHeap* g1h = G1CollectedHeap::heap();
542 if (g1h->is_heterogeneous_heap()) {
543 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
544 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
545 } else {
546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
547 }
548 }
549 #endif // INCLUDE_G1GC
550 #if INCLUDE_PARALLELGC
551 if (UseParallelGC) {
552 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
553 if (AllocateOldGenAt != NULL) {
554 MemRegion reserved = ps_heap->old_gen()->reserved();
555 return (jlong)reserved.start();
556 } else {
557 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
558 }
559 }
560 #endif // INCLUDE_PARALLELGC
561 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC");
562 WB_END
563
564 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o))
565 #if INCLUDE_G1GC
566 if (UseG1GC) {
567 G1CollectedHeap* g1h = G1CollectedHeap::heap();
568 if (g1h->is_heterogeneous_heap()) {
569 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
570 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
571 } else {
572 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
573 }
574 }
575 #endif // INCLUDE_G1GC
576 #if INCLUDE_PARALLELGC
577 if (UseParallelGC) {
578 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
579 if (AllocateOldGenAt != NULL) {
580 MemRegion reserved = ps_heap->old_gen()->reserved();
581 return (jlong)reserved.end();
582 } else {
583 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
584 }
585 }
586 #endif // INCLUDE_PARALLELGC
587 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC");
588 WB_END
589
590 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
591
592 #if INCLUDE_PARALLELGC
593
594 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
595 if (UseParallelGC) {
596 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
597 }
598 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
599 WB_END
600
601 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
602 if (UseParallelGC) {
603 return GenAlignment;
604 }
605 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
606 WB_END
607
608 #endif // INCLUDE_PARALLELGC
609
610 #if INCLUDE_G1GC
611
612 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
613 if (UseG1GC) {
614 ResourceMark rm(THREAD);
615 G1CollectedHeap* g1h = G1CollectedHeap::heap();
616 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
617 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
618 return JNIHandles::make_local(env, h());
619 }
620 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
621 WB_END
622
623 class OldRegionsLivenessClosure: public HeapRegionClosure {
624
625 private:
626 const int _liveness;
627 size_t _total_count;
628 size_t _total_memory;
629 size_t _total_memory_to_free;
630
631 public:
632 OldRegionsLivenessClosure(int liveness) :
633 _liveness(liveness),
634 _total_count(0),
635 _total_memory(0),
636 _total_memory_to_free(0) { }
637
638 size_t total_count() { return _total_count; }
639 size_t total_memory() { return _total_memory; }
640 size_t total_memory_to_free() { return _total_memory_to_free; }
641
642 bool do_heap_region(HeapRegion* r) {
643 if (r->is_old()) {
644 size_t prev_live = r->marked_bytes();
645 size_t live = r->live_bytes();
646 size_t size = r->used();
647 size_t reg_size = HeapRegion::GrainBytes;
648 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
649 _total_memory += size;
650 ++_total_count;
651 if (size == reg_size) {
652 // we don't include non-full regions since they are unlikely included in mixed gc
653 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
654 _total_memory_to_free += size - prev_live;
655 }
656 }
657 }
658 return false;
659 }
660 };
661
662
663 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
664 if (!UseG1GC) {
665 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
666 }
667 if (liveness < 0) {
668 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
669 }
670
671 G1CollectedHeap* g1h = G1CollectedHeap::heap();
672 OldRegionsLivenessClosure rli(liveness);
673 g1h->heap_region_iterate(&rli);
674
675 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
676 result->long_at_put(0, rli.total_count());
677 result->long_at_put(1, rli.total_memory());
678 result->long_at_put(2, rli.total_memory_to_free());
679 return (jlongArray) JNIHandles::make_local(env, result);
680 WB_END
681
682 #endif // INCLUDE_G1GC
683
684 #if INCLUDE_NMT
685 // Alloc memory using the test memory type so that we can use that to see if
686 // NMT picks it up correctly
687 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
688 jlong addr = 0;
689 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
690 return addr;
691 WB_END
692
693 // Alloc memory with pseudo call stack. The test can create psudo malloc
694 // allocation site to stress the malloc tracking.
695 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
696 address pc = (address)(size_t)pseudo_stack;
697 NativeCallStack stack(&pc, 1);
698 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
699 WB_END
700
701 // Alloc memory with pseudo call stack and specific memory type.
702 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
703 address pc = (address)(size_t)pseudo_stack;
704 NativeCallStack stack(&pc, 1);
705 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
706 WB_END
707
708 // Free the memory allocated by NMTAllocTest
709 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
710 os::free((void*)(uintptr_t)mem);
711 WB_END
712
713 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
714 jlong addr = 0;
715
716 addr = (jlong)(uintptr_t)os::reserve_memory(size);
717 MemTracker::record_virtual_memory_type((address)addr, mtTest);
718
719 return addr;
720 WB_END
721
722 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
723 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
724 MemTracker::record_virtual_memory_type((address)addr, mtTest);
725
726 return addr;
727 WB_END
728
729 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
730 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
731 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
732 WB_END
733
734 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
735 os::uncommit_memory((char *)(uintptr_t)addr, size);
736 WB_END
737
738 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
739 os::release_memory((char *)(uintptr_t)addr, size);
740 WB_END
741
742 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
743 // Test that we can downgrade NMT levels but not upgrade them.
744 if (MemTracker::tracking_level() == NMT_off) {
745 MemTracker::transition_to(NMT_off);
746 return MemTracker::tracking_level() == NMT_off;
747 } else {
748 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
749 MemTracker::transition_to(NMT_summary);
750 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
751
752 // Can't go to detail once NMT is set to summary.
753 MemTracker::transition_to(NMT_detail);
754 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
755
756 // Shutdown sets tracking level to minimal.
757 MemTracker::shutdown();
758 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
759
760 // Once the tracking level is minimal, we cannot increase to summary.
761 // The code ignores this request instead of asserting because if the malloc site
762 // table overflows in another thread, it tries to change the code to summary.
763 MemTracker::transition_to(NMT_summary);
764 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
765
766 // Really can never go up to detail, verify that the code would never do this.
767 MemTracker::transition_to(NMT_detail);
768 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
769 return MemTracker::tracking_level() == NMT_minimal;
770 }
771 WB_END
772
773 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
774 int hash_size = MallocSiteTable::hash_buckets();
775 assert(hash_size > 0, "NMT hash_size should be > 0");
776 return (jint)hash_size;
777 WB_END
778 #endif // INCLUDE_NMT
779
780 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
781 assert(method != NULL, "method should not be null");
782 ThreadToNativeFromVM ttn(thread);
783 return env->FromReflectedMethod(method);
784 }
785
786 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
787 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
788 private:
789 int _result;
790 const bool _make_not_entrant;
791 public:
792 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
793 _result(0), _make_not_entrant(make_not_entrant) { }
794 int result() const { return _result; }
795
796 void doit() {
797 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
798 if (t->has_last_Java_frame()) {
799 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
800 frame* f = fst.current();
801 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
802 RegisterMap* reg_map = fst.register_map();
803 Deoptimization::deoptimize(t, *f, reg_map);
804 if (_make_not_entrant) {
805 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
806 assert(cm != NULL, "sanity check");
807 cm->make_not_entrant();
808 }
809 ++_result;
810 }
811 }
812 }
813 }
814 }
815 };
816
817 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
818 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
819 VMThread::execute(&op);
820 return op.result();
821 WB_END
822
823 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
824 MutexLocker mu(Compile_lock);
825 CodeCache::mark_all_nmethods_for_deoptimization();
826 VM_Deoptimize op;
827 VMThread::execute(&op);
828 WB_END
829
830 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
831 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
832 int result = 0;
833 CHECK_JNI_EXCEPTION_(env, result);
834 MutexLocker mu(Compile_lock);
835 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
836 if (is_osr) {
837 result += mh->mark_osr_nmethods();
838 } else if (mh->code() != NULL) {
839 mh->code()->mark_for_deoptimization();
840 ++result;
841 }
842 result += CodeCache::mark_for_deoptimization(mh());
843 if (result > 0) {
844 VM_Deoptimize op;
845 VMThread::execute(&op);
846 }
847 return result;
848 WB_END
849
850 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
851 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
852 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
853 MutexLocker mu(Compile_lock);
854 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
855 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
856 if (code == NULL) {
857 return JNI_FALSE;
858 }
859 return (code->is_alive() && !code->is_marked_for_deoptimization());
860 WB_END
861
862 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
863 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
864 return false;
865 }
866 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
867 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
868 MutexLocker mu(Compile_lock);
869 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
870 if (is_osr) {
871 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
872 } else {
873 return CompilationPolicy::can_be_compiled(mh, comp_level);
874 }
875 WB_END
876
877 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
878 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
879 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
880 MutexLocker mu(Compile_lock);
881 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
882 return mh->queued_for_compilation();
883 WB_END
884
885 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
886 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
887 return false; // Intrinsic is not available on a non-existent compilation level.
888 }
889 jmethodID method_id, compilation_context_id;
890 method_id = reflected_method_to_jmid(thread, env, method);
891 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
892 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
893
894 DirectiveSet* directive;
895 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
896 assert(comp != NULL, "compiler not available");
897 if (compilation_context != NULL) {
898 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
899 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
900 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
901 directive = DirectivesStack::getMatchingDirective(cch, comp);
902 } else {
903 // Calling with NULL matches default directive
904 directive = DirectivesStack::getDefaultDirective(comp);
905 }
906 bool result = comp->is_intrinsic_available(mh, directive);
907 DirectivesStack::release(directive);
908 return result;
909 WB_END
910
911 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
912 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
913 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
914 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
915 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
916 return (code != NULL ? code->comp_level() : CompLevel_none);
917 WB_END
918
919 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
920 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
921 CHECK_JNI_EXCEPTION(env);
922 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
923 if (is_osr) {
924 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
925 } else {
926 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
927 }
928 WB_END
929
930 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
931 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
932 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
934 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
935 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
936 WB_END
937
938 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
939 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
940 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
941 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
942 bool result = mh->dont_inline();
943 mh->set_dont_inline(value == JNI_TRUE);
944 return result;
945 WB_END
946
947 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
948 if (comp_level == CompLevel_any) {
949 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
950 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
951 } else {
952 return CompileBroker::queue_size(comp_level);
953 }
954 WB_END
955
956 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
957 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
958 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
959 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
960 bool result = mh->force_inline();
961 mh->set_force_inline(value == JNI_TRUE);
962 return result;
963 WB_END
964
965 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
966 // Screen for unavailable/bad comp level or null method
967 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
968 if (method == NULL) {
969 tty->print_cr("WB error: request to compile NULL method");
970 return false;
971 }
972 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
973 tty->print_cr("WB error: invalid compilation level %d", comp_level);
974 return false;
975 }
976 if (comp == NULL) {
977 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
978 return false;
979 }
980
981 // Check if compilation is blocking
982 methodHandle mh(THREAD, method);
983 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
984 bool is_blocking = !directive->BackgroundCompilationOption;
985 DirectivesStack::release(directive);
986
987 // Compile method and check result
988 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
989 MutexLocker mu(Compile_lock);
990 bool is_queued = mh->queued_for_compilation();
991 if ((!is_blocking && is_queued) || nm != NULL) {
992 return true;
993 }
994 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
995 mh->print_short_name(tty);
996 tty->cr();
997 if (is_blocking && is_queued) {
998 tty->print_cr("WB error: blocking compilation is still in queue!");
999 }
1000 return false;
1001 }
1002
1003 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1004 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1005 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1006 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1007 WB_END
1008
1009 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1010 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1011 Method* clinit = ik->class_initializer();
1012 if (clinit == NULL) {
1013 return false;
1014 }
1015 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1016 WB_END
1017
1018 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1019 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1020 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1021
1022 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1023 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1024 bool result = directive->PrintAssemblyOption;
1025 DirectivesStack::release(directive);
1026
1027 return result;
1028 WB_END
1029
1030 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1031 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1032 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1033
1034 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1035
1036 ResourceMark rm;
1037 const char* error_msg = NULL;
1038 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1039 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1040
1041 if (m == NULL) {
1042 assert(error_msg != NULL, "Always have an error message");
1043 tty->print_cr("Got error: %s", error_msg);
1044 return -1; // Pattern failed
1045 }
1046
1047 // Pattern works - now check if it matches
1048 int result;
1049 if (m->match(mh, InlineMatcher::force_inline)) {
1050 result = 2; // Force inline match
1051 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1052 result = 1; // Dont inline match
1053 } else {
1054 result = 0; // No match
1055 }
1056 delete m;
1057 return result;
1058 WB_END
1059
1060 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1061 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1062 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1063
1064 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1065
1066 ResourceMark rm;
1067 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1068
1069 const char* error_msg = NULL;
1070
1071 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
1072 if (m == NULL) {
1073 assert(error_msg != NULL, "Must have error_msg");
1074 tty->print_cr("Got error: %s", error_msg);
1075 return -1;
1076 }
1077
1078 // Pattern works - now check if it matches
1079 int result = m->matches(mh);
1080 delete m;
1081 assert(result == 0 || result == 1, "Result out of range");
1082 return result;
1083 WB_END
1084
1085 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1086 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1087 CHECK_JNI_EXCEPTION(env);
1088 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1089
1090 MethodData* mdo = mh->method_data();
1091 if (mdo == NULL) {
1092 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1093 mdo = mh->method_data();
1094 }
1095 mdo->init();
1096 InvocationCounter* icnt = mdo->invocation_counter();
1097 InvocationCounter* bcnt = mdo->backedge_counter();
1098 // set i-counter according to TieredThresholdPolicy::is_method_profiled
1099 icnt->set(InvocationCounter::wait_for_compile, Tier4MinInvocationThreshold);
1100 bcnt->set(InvocationCounter::wait_for_compile, Tier4CompileThreshold);
1101 WB_END
1102
1103 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1104 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1105 CHECK_JNI_EXCEPTION(env);
1106 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1107 MutexLocker mu(Compile_lock);
1108 MethodData* mdo = mh->method_data();
1109 MethodCounters* mcs = mh->method_counters();
1110
1111 if (mdo != NULL) {
1112 mdo->init();
1113 ResourceMark rm;
1114 int arg_count = mdo->method()->size_of_parameters();
1115 for (int i = 0; i < arg_count; i++) {
1116 mdo->set_arg_modified(i, 0);
1117 }
1118 MutexLocker mu(mdo->extra_data_lock());
1119 mdo->clean_method_data(/*always_clean*/true);
1120 }
1121
1122 mh->clear_not_c1_compilable();
1123 mh->clear_not_c2_compilable();
1124 mh->clear_not_c2_osr_compilable();
1125 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1126 if (mcs != NULL) {
1127 mcs->backedge_counter()->init();
1128 mcs->invocation_counter()->init();
1129 mcs->set_interpreter_invocation_count(0);
1130 mcs->set_interpreter_throwout_count(0);
1131
1132 #ifdef TIERED
1133 mcs->set_rate(0.0F);
1134 mh->set_prev_event_count(0);
1135 mh->set_prev_time(0);
1136 #endif
1137 }
1138 WB_END
1139
1140 template <typename T>
1141 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1142 if (name == NULL) {
1143 return false;
1144 }
1145 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1146 const char* flag_name = env->GetStringUTFChars(name, NULL);
1147 CHECK_JNI_EXCEPTION_(env, false);
1148 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1149 env->ReleaseStringUTFChars(name, flag_name);
1150 return (result == JVMFlag::SUCCESS);
1151 }
1152
1153 template <typename T>
1154 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1155 if (name == NULL) {
1156 return false;
1157 }
1158 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1159 const char* flag_name = env->GetStringUTFChars(name, NULL);
1160 CHECK_JNI_EXCEPTION_(env, false);
1161 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1162 env->ReleaseStringUTFChars(name, flag_name);
1163 return (result == JVMFlag::SUCCESS);
1164 }
1165
1166 template <typename T>
1167 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1168 ResourceMark rm(thread);
1169 jclass clazz = env->FindClass(name->as_C_string());
1170 CHECK_JNI_EXCEPTION_(env, NULL);
1171 jmethodID methodID = env->GetStaticMethodID(clazz,
1172 vmSymbols::valueOf_name()->as_C_string(),
1173 sig->as_C_string());
1174 CHECK_JNI_EXCEPTION_(env, NULL);
1175 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1176 CHECK_JNI_EXCEPTION_(env, NULL);
1177 return result;
1178 }
1179
1180 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1181 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1182 }
1183 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1184 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1185 }
1186 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1187 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1188 }
1189 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1190 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1191 }*/
1192 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1193 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1194 }
1195
1196 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1197 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1198 const char* flag_name = env->GetStringUTFChars(name, NULL);
1199 CHECK_JNI_EXCEPTION_(env, NULL);
1200 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1201 env->ReleaseStringUTFChars(name, flag_name);
1202 return result;
1203 }
1204
1205 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1206 JVMFlag* flag = getVMFlag(thread, env, name);
1207 return (flag != NULL) && flag->is_constant_in_binary();
1208 WB_END
1209
1210 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1211 JVMFlag* flag = getVMFlag(thread, env, name);
1212 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1213 WB_END
1214
1215 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1216 bool result;
1217 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1218 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1219 return booleanBox(thread, env, result);
1220 }
1221 return NULL;
1222 WB_END
1223
1224 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1225 int result;
1226 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1227 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1228 return longBox(thread, env, result);
1229 }
1230 return NULL;
1231 WB_END
1232
1233 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1234 uint result;
1235 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1236 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1237 return longBox(thread, env, result);
1238 }
1239 return NULL;
1240 WB_END
1241
1242 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1243 intx result;
1244 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1245 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1246 return longBox(thread, env, result);
1247 }
1248 return NULL;
1249 WB_END
1250
1251 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1252 uintx result;
1253 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1254 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1255 return longBox(thread, env, result);
1256 }
1257 return NULL;
1258 WB_END
1259
1260 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1261 uint64_t result;
1262 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1263 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1264 return longBox(thread, env, result);
1265 }
1266 return NULL;
1267 WB_END
1268
1269 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1270 size_t result;
1271 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1272 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1273 return longBox(thread, env, result);
1274 }
1275 return NULL;
1276 WB_END
1277
1278 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1279 double result;
1280 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1281 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1282 return doubleBox(thread, env, result);
1283 }
1284 return NULL;
1285 WB_END
1286
1287 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1288 ccstr ccstrResult;
1289 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1290 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1291 jstring result = env->NewStringUTF(ccstrResult);
1292 CHECK_JNI_EXCEPTION_(env, NULL);
1293 return result;
1294 }
1295 return NULL;
1296 WB_END
1297
1298 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1299 bool result = value == JNI_TRUE ? true : false;
1300 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1301 WB_END
1302
1303 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1304 int result = value;
1305 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1306 WB_END
1307
1308 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1309 uint result = value;
1310 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1311 WB_END
1312
1313 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1314 intx result = value;
1315 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1316 WB_END
1317
1318 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1319 uintx result = value;
1320 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1321 WB_END
1322
1323 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1324 uint64_t result = value;
1325 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1326 WB_END
1327
1328 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1329 size_t result = value;
1330 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1331 WB_END
1332
1333 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1334 double result = value;
1335 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1336 WB_END
1337
1338 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1339 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1340 const char* ccstrValue;
1341 if (value == NULL) {
1342 ccstrValue = NULL;
1343 }
1344 else {
1345 ccstrValue = env->GetStringUTFChars(value, NULL);
1346 CHECK_JNI_EXCEPTION(env);
1347 }
1348 ccstr ccstrResult = ccstrValue;
1349 bool needFree;
1350 {
1351 ThreadInVMfromNative ttvfn(thread); // back to VM
1352 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1353 }
1354 if (value != NULL) {
1355 env->ReleaseStringUTFChars(value, ccstrValue);
1356 }
1357 if (needFree) {
1358 FREE_C_HEAP_ARRAY(char, ccstrResult);
1359 }
1360 WB_END
1361
1362 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1363 WhiteBox::compilation_locked = true;
1364 WB_END
1365
1366 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1367 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1368 WhiteBox::compilation_locked = false;
1369 mo.notify_all();
1370 WB_END
1371
1372 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1373 // Force a code cache sweep and block until it finished
1374 NMethodSweeper::force_sweep();
1375 WB_END
1376
1377 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1378 ResourceMark rm(THREAD);
1379 int len;
1380 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1381 return (StringTable::lookup(name, len) != NULL);
1382 WB_END
1383
1384 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1385 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1386 Universe::heap()->collect(GCCause::_wb_full_gc);
1387 #if INCLUDE_G1GC
1388 if (UseG1GC) {
1389 // Needs to be cleared explicitly for G1
1390 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1391 }
1392 #endif // INCLUDE_G1GC
1393 WB_END
1394
1395 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1396 Universe::heap()->collect(GCCause::_wb_young_gc);
1397 WB_END
1398
1399 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1400 // static+volatile in order to force the read to happen
1401 // (not be eliminated by the compiler)
1402 static char c;
1403 static volatile char* p;
1404
1405 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1406 if (p == NULL) {
1407 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1408 }
1409
1410 c = *p;
1411 WB_END
1412
1413 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1414 const char* features = VM_Version::features_string();
1415 ThreadToNativeFromVM ttn(thread);
1416 jstring features_string = env->NewStringUTF(features);
1417
1418 CHECK_JNI_EXCEPTION_(env, NULL);
1419
1420 return features_string;
1421 WB_END
1422
1423 int WhiteBox::get_blob_type(const CodeBlob* code) {
1424 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1425 if (code->is_aot()) {
1426 return -1;
1427 }
1428 return CodeCache::get_code_heap(code)->code_blob_type();
1429 }
1430
1431 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1432 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1433 return CodeCache::get_code_heap(blob_type);
1434 }
1435
1436 struct CodeBlobStub {
1437 CodeBlobStub(const CodeBlob* blob) :
1438 name(os::strdup(blob->name())),
1439 size(blob->size()),
1440 blob_type(WhiteBox::get_blob_type(blob)),
1441 address((jlong) blob) { }
1442 ~CodeBlobStub() { os::free((void*) name); }
1443 const char* const name;
1444 const jint size;
1445 const jint blob_type;
1446 const jlong address;
1447 };
1448
1449 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1450 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1451 CHECK_JNI_EXCEPTION_(env, NULL);
1452 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1453
1454 jstring name = env->NewStringUTF(cb->name);
1455 CHECK_JNI_EXCEPTION_(env, NULL);
1456 env->SetObjectArrayElement(result, 0, name);
1457
1458 jobject obj = integerBox(thread, env, cb->size);
1459 CHECK_JNI_EXCEPTION_(env, NULL);
1460 env->SetObjectArrayElement(result, 1, obj);
1461
1462 obj = integerBox(thread, env, cb->blob_type);
1463 CHECK_JNI_EXCEPTION_(env, NULL);
1464 env->SetObjectArrayElement(result, 2, obj);
1465
1466 obj = longBox(thread, env, cb->address);
1467 CHECK_JNI_EXCEPTION_(env, NULL);
1468 env->SetObjectArrayElement(result, 3, obj);
1469
1470 return result;
1471 }
1472
1473 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1474 ResourceMark rm(THREAD);
1475 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1476 CHECK_JNI_EXCEPTION_(env, NULL);
1477 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1478 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1479 jobjectArray result = NULL;
1480 if (code == NULL) {
1481 return result;
1482 }
1483 int comp_level = code->comp_level();
1484 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1485
1486 ThreadToNativeFromVM ttn(thread);
1487 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1488 CHECK_JNI_EXCEPTION_(env, NULL);
1489 result = env->NewObjectArray(5, clazz, NULL);
1490 if (result == NULL) {
1491 return result;
1492 }
1493
1494 CodeBlobStub stub(code);
1495 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1496 CHECK_JNI_EXCEPTION_(env, NULL);
1497 env->SetObjectArrayElement(result, 0, codeBlob);
1498
1499 jobject level = integerBox(thread, env, comp_level);
1500 CHECK_JNI_EXCEPTION_(env, NULL);
1501 env->SetObjectArrayElement(result, 1, level);
1502
1503 jbyteArray insts = env->NewByteArray(insts_size);
1504 CHECK_JNI_EXCEPTION_(env, NULL);
1505 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1506 env->SetObjectArrayElement(result, 2, insts);
1507
1508 jobject id = integerBox(thread, env, code->compile_id());
1509 CHECK_JNI_EXCEPTION_(env, NULL);
1510 env->SetObjectArrayElement(result, 3, id);
1511
1512 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1513 CHECK_JNI_EXCEPTION_(env, NULL);
1514 env->SetObjectArrayElement(result, 4, entry_point);
1515
1516 return result;
1517 WB_END
1518
1519 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1520 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1521 BufferBlob* blob;
1522 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1523 if (full_size < size) {
1524 full_size += align_up(size - full_size, oopSize);
1525 }
1526 {
1527 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1528 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1529 if (blob != NULL) {
1530 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1531 }
1532 }
1533 // Track memory usage statistic after releasing CodeCache_lock
1534 MemoryService::track_code_cache_memory_usage();
1535 return blob;
1536 }
1537
1538 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1539 if (size < 0) {
1540 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1541 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1542 }
1543 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1544 WB_END
1545
1546 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1547 if (addr == 0) {
1548 return;
1549 }
1550 BufferBlob::free((BufferBlob*) addr);
1551 WB_END
1552
1553 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1554 ResourceMark rm;
1555 GrowableArray<CodeBlobStub*> blobs;
1556 {
1557 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1558 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1559 if (heap == NULL) {
1560 return NULL;
1561 }
1562 for (CodeBlob* cb = (CodeBlob*) heap->first();
1563 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1564 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1565 new (stub) CodeBlobStub(cb);
1566 blobs.append(stub);
1567 }
1568 }
1569 ThreadToNativeFromVM ttn(thread);
1570 jobjectArray result = NULL;
1571 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1572 CHECK_JNI_EXCEPTION_(env, NULL);
1573 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1574 CHECK_JNI_EXCEPTION_(env, NULL);
1575 if (result == NULL) {
1576 return result;
1577 }
1578 int i = 0;
1579 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1580 it != blobs.end(); ++it) {
1581 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1582 CHECK_JNI_EXCEPTION_(env, NULL);
1583 env->SetObjectArrayElement(result, i, obj);
1584 CHECK_JNI_EXCEPTION_(env, NULL);
1585 ++i;
1586 }
1587 return result;
1588 WB_END
1589
1590 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1591 return CompileBroker::get_compilation_activity_mode();
1592 WB_END
1593
1594 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1595 if (addr == 0) {
1596 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1597 "WB_GetCodeBlob: addr is null");
1598 }
1599 ThreadToNativeFromVM ttn(thread);
1600 CodeBlobStub stub((CodeBlob*) addr);
1601 return codeBlob2objectArray(thread, env, &stub);
1602 WB_END
1603
1604 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1605 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1606 CHECK_JNI_EXCEPTION_(env, 0);
1607 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1608 return (jlong) mh->method_data();
1609 WB_END
1610
1611 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1612 return (jlong) Thread::current()->stack_size();
1613 WB_END
1614
1615 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1616 JavaThread* t = JavaThread::current();
1617 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1618 WB_END
1619
1620
1621 int WhiteBox::array_bytes_to_length(size_t bytes) {
1622 return Array<u1>::bytes_to_length(bytes);
1623 }
1624
1625 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1626 if (size < 0) {
1627 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1628 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1629 }
1630
1631 oop class_loader_oop = JNIHandles::resolve(class_loader);
1632 ClassLoaderData* cld = class_loader_oop != NULL
1633 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1634 : ClassLoaderData::the_null_class_loader_data();
1635
1636 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1637
1638 return (jlong)(uintptr_t)metadata;
1639 WB_END
1640
1641 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1642 oop class_loader_oop = JNIHandles::resolve(class_loader);
1643 ClassLoaderData* cld = class_loader_oop != NULL
1644 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1645 : ClassLoaderData::the_null_class_loader_data();
1646
1647 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1648 WB_END
1649
1650 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1651 jstring version, jstring location, jobjectArray packages))
1652 ResourceMark rm(THREAD);
1653
1654 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1655 objArrayHandle packages_h(THREAD, packages_oop);
1656 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1657
1658 char** pkgs = NULL;
1659 if (num_packages > 0) {
1660 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1661 for (int x = 0; x < num_packages; x++) {
1662 oop pkg_str = packages_h->obj_at(x);
1663 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1664 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1665 err_msg("Bad package name"));
1666 }
1667 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1668 }
1669 }
1670 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1671 WB_END
1672
1673 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1674 ResourceMark rm(THREAD);
1675 char* package_name = NULL;
1676 if (package != NULL) {
1677 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1678 }
1679 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1680 WB_END
1681
1682 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1683 ResourceMark rm(THREAD);
1684 char* package_name = NULL;
1685 if (package != NULL) {
1686 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1687 }
1688 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1689 WB_END
1690
1691 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1692 ResourceMark rm(THREAD);
1693 char* package_name = NULL;
1694 if (package != NULL) {
1695 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1696 }
1697 Modules::add_module_exports(module, package_name, NULL, CHECK);
1698 WB_END
1699
1700 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1701 Modules::add_reads_module(from_module, source_module, CHECK);
1702 WB_END
1703
1704 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1705 if (inc < 0) {
1706 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1707 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1708 }
1709
1710 jlong max_size_t = (jlong) ((size_t) -1);
1711 if (inc > max_size_t) {
1712 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1713 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1714 }
1715
1716 size_t new_cap_until_GC = 0;
1717 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1718 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1719 if (!success) {
1720 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1721 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1722 "due to contention with another thread");
1723 }
1724 return (jlong) new_cap_until_GC;
1725 WB_END
1726
1727 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1728 return (jlong) MetaspaceGC::capacity_until_GC();
1729 WB_END
1730
1731 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1732 return MetaspaceGC::should_concurrent_collect();
1733 WB_END
1734
1735 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1736 return (jlong)Metaspace::reserve_alignment();
1737 WB_END
1738
1739 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1740 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1741 Monitor::_safepoint_check_always :
1742 Monitor::_safepoint_check_never;
1743 Monitor::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ?
1744 Monitor::_no_safepoint_check_flag :
1745 Monitor::_safepoint_check_flag;
1746 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1747 sfpt_check_attempted);
1748 WB_END
1749
1750 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1751 oop obj_oop = JNIHandles::resolve(obj);
1752 return (jboolean) obj_oop->mark()->has_monitor();
1753 WB_END
1754
1755 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1756 VM_ForceSafepoint force_safepoint_op;
1757 VMThread::execute(&force_safepoint_op);
1758 WB_END
1759
1760 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1761 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1762 return (jlong) ik->constants();
1763 WB_END
1764
1765 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1766 return ConstantPool::CPCACHE_INDEX_TAG;
1767 WB_END
1768
1769 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1770 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1771 ConstantPool* cp = ik->constants();
1772 if (cp->cache() == NULL) {
1773 return -1;
1774 }
1775 return cp->cache()->length();
1776 WB_END
1777
1778 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1779 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1780 ConstantPool* cp = ik->constants();
1781 if (cp->cache() == NULL) {
1782 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1783 }
1784 jint cpci = index;
1785 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1786 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1787 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1788 }
1789 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1790 return cpi;
1791 WB_END
1792
1793 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1794 return ConstantPool::encode_invokedynamic_index(index);
1795 WB_END
1796
1797 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1798 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1799 VMThread::execute(&clear_ics);
1800 WB_END
1801
1802 template <typename T>
1803 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1804 assert(value != NULL, "sanity");
1805 if (method == NULL || name == NULL) {
1806 return false;
1807 }
1808 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1809 CHECK_JNI_EXCEPTION_(env, false);
1810 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1811 // can't be in VM when we call JNI
1812 ThreadToNativeFromVM ttnfv(thread);
1813 const char* flag_name = env->GetStringUTFChars(name, NULL);
1814 CHECK_JNI_EXCEPTION_(env, false);
1815 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1816 env->ReleaseStringUTFChars(name, flag_name);
1817 return result;
1818 }
1819
1820 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1821 bool result;
1822 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1823 // can't be in VM when we call JNI
1824 ThreadToNativeFromVM ttnfv(thread);
1825 return booleanBox(thread, env, result);
1826 }
1827 return NULL;
1828 WB_END
1829
1830 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1831 intx result;
1832 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1833 // can't be in VM when we call JNI
1834 ThreadToNativeFromVM ttnfv(thread);
1835 return longBox(thread, env, result);
1836 }
1837 return NULL;
1838 WB_END
1839
1840 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1841 uintx result;
1842 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1843 // can't be in VM when we call JNI
1844 ThreadToNativeFromVM ttnfv(thread);
1845 return longBox(thread, env, result);
1846 }
1847 return NULL;
1848 WB_END
1849
1850 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1851 double result;
1852 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1853 // can't be in VM when we call JNI
1854 ThreadToNativeFromVM ttnfv(thread);
1855 return doubleBox(thread, env, result);
1856 }
1857 return NULL;
1858 WB_END
1859
1860 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1861 ccstr ccstrResult;
1862 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1863 // can't be in VM when we call JNI
1864 ThreadToNativeFromVM ttnfv(thread);
1865 jstring result = env->NewStringUTF(ccstrResult);
1866 CHECK_JNI_EXCEPTION_(env, NULL);
1867 return result;
1868 }
1869 return NULL;
1870 WB_END
1871
1872 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1873 const char* p = Arguments::get_default_shared_archive_path();
1874 ThreadToNativeFromVM ttn(thread);
1875 jstring path_string = env->NewStringUTF(p);
1876
1877 CHECK_JNI_EXCEPTION_(env, NULL);
1878
1879 return path_string;
1880 WB_END
1881
1882 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1883 return UseSharedSpaces;
1884 WB_END
1885
1886 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1887 oop obj_oop = JNIHandles::resolve(obj);
1888 return HeapShared::is_archived_object(obj_oop);
1889 WB_END
1890
1891 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1892 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1893 WB_END
1894
1895 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1896 return !HeapShared::closed_archive_heap_region_mapped();
1897 WB_END
1898
1899 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1900 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1901 if (k->is_instance_klass()) {
1902 InstanceKlass *ik = InstanceKlass::cast(k);
1903 ConstantPool *cp = ik->constants();
1904 objArrayOop refs = cp->resolved_references();
1905 return (jobject)JNIHandles::make_local(env, refs);
1906 } else {
1907 return NULL;
1908 }
1909 WB_END
1910
1911 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1912 return HeapShared::open_archive_heap_region_mapped();
1913 WB_END
1914
1915 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1916 #if INCLUDE_CDS
1917 # ifdef _LP64
1918 if (!UseCompressedOops || !UseCompressedClassPointers) {
1919 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1920 return false;
1921 }
1922 # endif // _LP64
1923 return true;
1924 #else
1925 return false;
1926 #endif // INCLUDE_CDS
1927 WB_END
1928
1929 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1930 return HeapShared::is_heap_object_archiving_allowed();
1931 WB_END
1932
1933
1934 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1935 #if INCLUDE_JFR
1936 return true;
1937 #else
1938 return false;
1939 #endif // INCLUDE_JFR
1940 WB_END
1941
1942 #if INCLUDE_CDS
1943
1944 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1945 ResourceMark rm;
1946 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1947 int result = CDSOffsets::find_offset(c_name);
1948 return (jint)result;
1949 WB_END
1950
1951 #endif // INCLUDE_CDS
1952
1953 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1954 class TraceSelfClosure : public ThreadClosure {
1955 jint _num_threads_completed;
1956
1957 void do_thread(Thread* th) {
1958 assert(th->is_Java_thread(), "sanity");
1959 JavaThread* jt = (JavaThread*)th;
1960 ResourceMark rm;
1961
1962 jt->print_on(tty);
1963 jt->print_stack_on(tty);
1964 tty->cr();
1965 Atomic::inc(&_num_threads_completed);
1966 }
1967
1968 public:
1969 TraceSelfClosure() : _num_threads_completed(0) {}
1970
1971 jint num_threads_completed() const { return _num_threads_completed; }
1972 };
1973 TraceSelfClosure tsc;
1974
1975 if (all_threads) {
1976 Handshake::execute(&tsc);
1977 } else {
1978 oop thread_oop = JNIHandles::resolve(thread_handle);
1979 if (thread_oop != NULL) {
1980 JavaThread* target = java_lang_Thread::thread(thread_oop);
1981 Handshake::execute(&tsc, target);
1982 }
1983 }
1984 return tsc.num_threads_completed();
1985 WB_END
1986
1987 //Some convenience methods to deal with objects from java
1988 int WhiteBox::offset_for_field(const char* field_name, oop object,
1989 Symbol* signature_symbol) {
1990 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1991 Thread* THREAD = Thread::current();
1992
1993 //Get the class of our object
1994 Klass* arg_klass = object->klass();
1995 //Turn it into an instance-klass
1996 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1997
1998 //Create symbols to look for in the class
1999 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
2000 THREAD);
2001
2002 //To be filled in with an offset of the field we're looking for
2003 fieldDescriptor fd;
2004
2005 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2006 if (res == NULL) {
2007 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2008 name_symbol->as_C_string());
2009 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2010 }
2011
2012 //fetch the field at the offset we've found
2013 int dest_offset = fd.offset();
2014
2015 return dest_offset;
2016 }
2017
2018
2019 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2020 int offset = offset_for_field(field_name, object,
2021 vmSymbols::string_signature());
2022 oop string = object->obj_field(offset);
2023 if (string == NULL) {
2024 return NULL;
2025 }
2026 const char* ret = java_lang_String::as_utf8_string(string);
2027 return ret;
2028 }
2029
2030 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2031 int offset =
2032 offset_for_field(field_name, object, vmSymbols::bool_signature());
2033 bool ret = (object->bool_field(offset) == JNI_TRUE);
2034 return ret;
2035 }
2036
2037 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2038 ResourceMark rm;
2039 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2040
2041 // one by one registration natives for exception catching
2042 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2043 CHECK_JNI_EXCEPTION(env);
2044 for (int i = 0, n = method_count; i < n; ++i) {
2045 // Skip dummy entries
2046 if (method_array[i].fnPtr == NULL) continue;
2047 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2048 jthrowable throwable_obj = env->ExceptionOccurred();
2049 if (throwable_obj != NULL) {
2050 env->ExceptionClear();
2051 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2052 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2053 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2054 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
2055 method_array[i].name, method_array[i].signature);
2056 }
2057 } else {
2058 // Registration failed unexpectedly.
2059 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
2060 method_array[i].name, method_array[i].signature);
2061 env->UnregisterNatives(wbclass);
2062 break;
2063 }
2064 }
2065 }
2066 }
2067
2068 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2069 // can't be in VM when we call JNI
2070 ThreadToNativeFromVM ttnfv(thread);
2071 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2072 CHECK_JNI_EXCEPTION_(env, 0);
2073 int ret;
2074 {
2075 ThreadInVMfromNative ttvfn(thread); // back to VM
2076 ret = DirectivesParser::parse_string(dir, tty);
2077 }
2078 env->ReleaseStringUTFChars(compDirect, dir);
2079 // -1 for error parsing directive. Return 0 as number of directives added.
2080 if (ret == -1) {
2081 ret = 0;
2082 }
2083 return (jint) ret;
2084 WB_END
2085
2086 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2087 DirectivesStack::pop(count);
2088 WB_END
2089
2090 // Checks that the library libfile has the noexecstack bit set.
2091 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2092 jboolean ret = false;
2093 #ifdef LINUX
2094 // Can't be in VM when we call JNI.
2095 ThreadToNativeFromVM ttnfv(thread);
2096 const char* lf = env->GetStringUTFChars(libfile, NULL);
2097 CHECK_JNI_EXCEPTION_(env, 0);
2098 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2099 env->ReleaseStringUTFChars(libfile, lf);
2100 #endif
2101 return ret;
2102 WB_END
2103
2104 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2105 LINUX_ONLY(return OSContainer::is_containerized();)
2106 return false;
2107 WB_END
2108
2109 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2110 os::print_os_info(tty);
2111 WB_END
2112
2113 // Elf decoder
2114 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2115 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2116 ElfFile::_do_not_cache_elf_section = true;
2117 #endif
2118 WB_END
2119
2120 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2121 return (jlong) ResolvedMethodTable::items_count();
2122 WB_END
2123
2124 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2125 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2126 WB_END
2127
2128 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o))
2129 jint result = 0;
2130 #if INCLUDE_AOT
2131 result = (jint) AOTLoader::heaps_count();
2132 #endif
2133 return result;
2134 WB_END
2135
2136 #define CC (char*)
2137
2138 static JNINativeMethod methods[] = {
2139 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2140 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2141 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2142 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2143 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2144 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2145 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2146 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2147 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2148 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2149 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2150 {CC"parseCommandLine0",
2151 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2152 (void*) &WB_ParseCommandLine
2153 },
2154 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2155 (void*)&WB_AddToBootstrapClassLoaderSearch},
2156 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2157 (void*)&WB_AddToSystemClassLoaderSearch},
2158 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2159 (void*)&WB_GetCompressedOopsMaxHeapSize},
2160 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2161 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2162 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2163 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2164 #if INCLUDE_CDS
2165 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2166 #endif
2167 #if INCLUDE_G1GC
2168 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2169 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2170 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2171 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2172 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2173 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2174 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2175 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2176 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2177 (void*)&WB_G1AuxiliaryMemoryUsage },
2178 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2179 #endif // INCLUDE_G1GC
2180 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
2181 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart },
2182 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd },
2183 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart },
2184 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd },
2185 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
2186 #if INCLUDE_PARALLELGC
2187 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2188 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2189 #endif
2190 #if INCLUDE_NMT
2191 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2192 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2193 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2194 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2195 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2196 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2197 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2198 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2199 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2200 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2201 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2202 #endif // INCLUDE_NMT
2203 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2204 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2205 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2206 (void*)&WB_DeoptimizeMethod },
2207 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2208 (void*)&WB_IsMethodCompiled },
2209 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2210 (void*)&WB_IsMethodCompilable},
2211 {CC"isMethodQueuedForCompilation0",
2212 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2213 {CC"isIntrinsicAvailable0",
2214 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2215 (void*)&WB_IsIntrinsicAvailable},
2216 {CC"makeMethodNotCompilable0",
2217 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2218 {CC"testSetDontInlineMethod0",
2219 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2220 {CC"getMethodCompilationLevel0",
2221 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2222 {CC"getMethodEntryBci0",
2223 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2224 {CC"getCompileQueueSize",
2225 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2226 {CC"testSetForceInlineMethod0",
2227 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2228 {CC"enqueueMethodForCompilation0",
2229 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2230 {CC"enqueueInitializerForCompilation0",
2231 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2232 {CC"markMethodProfiled",
2233 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2234 {CC"clearMethodState0",
2235 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2236 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2237 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2238 {CC"matchesMethod",
2239 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2240 (void*)&WB_MatchesMethod},
2241 {CC"matchesInline",
2242 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2243 (void*)&WB_MatchesInline},
2244 {CC"shouldPrintAssembly",
2245 CC"(Ljava/lang/reflect/Executable;I)Z",
2246 (void*)&WB_ShouldPrintAssembly},
2247
2248 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2249 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2250 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2251 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2252 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2253 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2254 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2255 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2256 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2257 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2258 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2259 (void*)&WB_SetStringVMFlag},
2260 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2261 (void*)&WB_GetBooleanVMFlag},
2262 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2263 (void*)&WB_GetIntVMFlag},
2264 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2265 (void*)&WB_GetUintVMFlag},
2266 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2267 (void*)&WB_GetIntxVMFlag},
2268 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2269 (void*)&WB_GetUintxVMFlag},
2270 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2271 (void*)&WB_GetUint64VMFlag},
2272 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2273 (void*)&WB_GetSizeTVMFlag},
2274 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2275 (void*)&WB_GetDoubleVMFlag},
2276 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2277 (void*)&WB_GetStringVMFlag},
2278 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2279 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2280 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2281 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2282 {CC"allocateMetaspace",
2283 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2284 {CC"freeMetaspace",
2285 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2286 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2287 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2288 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2289 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2290 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2291 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2292 (void*)&WB_GetNMethod },
2293 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2294 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2295 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2296 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2297 {CC"getCompilationActivityMode",
2298 CC"()I", (void*)&WB_GetCompilationActivityMode},
2299 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2300 (void*)&WB_GetMethodData },
2301 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2302 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2303 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2304 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2305 (void*)&WB_DefineModule },
2306 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2307 (void*)&WB_AddModuleExports },
2308 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2309 (void*)&WB_AddReadsModule },
2310 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2311 (void*)&WB_AddModuleExportsToAllUnnamed },
2312 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2313 (void*)&WB_AddModuleExportsToAll },
2314 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2315 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2316 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2317 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2318 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2319 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2320 {CC"remapInstructionOperandFromCPCache0",
2321 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2322 {CC"encodeConstantPoolIndyIndex0",
2323 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2324 {CC"getMethodBooleanOption",
2325 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2326 (void*)&WB_GetMethodBooleaneOption},
2327 {CC"getMethodIntxOption",
2328 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2329 (void*)&WB_GetMethodIntxOption},
2330 {CC"getMethodUintxOption",
2331 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2332 (void*)&WB_GetMethodUintxOption},
2333 {CC"getMethodDoubleOption",
2334 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2335 (void*)&WB_GetMethodDoubleOption},
2336 {CC"getMethodStringOption",
2337 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2338 (void*)&WB_GetMethodStringOption},
2339 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2340 (void*)&WB_GetDefaultArchivePath},
2341 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2342 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2343 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2344 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2345 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2346 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2347 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2348 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2349 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2350
2351 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2352 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2353 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2354 (void*)&WB_AddCompilerDirective },
2355 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2356 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2357 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2358 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2359 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2360 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2361 (void*)&WB_RequestConcurrentGCPhase},
2362 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2363 (void*)&WB_CheckLibSpecifiesNoexecstack},
2364 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2365 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2366 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2367 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2368 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2369 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount },
2370 };
2371
2372
2373 #undef CC
2374
2375 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2376 {
2377 if (WhiteBoxAPI) {
2378 // Make sure that wbclass is loaded by the null classloader
2379 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2380 Handle loader(THREAD, ik->class_loader());
2381 if (loader.is_null()) {
2382 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2383 WhiteBox::set_used();
2384 }
2385 }
2386 }
2387 JVM_END