1 /*
2 * Copyright (c) 2012, 2020, 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/javaClasses.inline.hpp"
31 #include "classfile/modules.hpp"
32 #include "classfile/protectionDomainCache.hpp"
33 #include "classfile/stringTable.hpp"
34 #include "classfile/symbolTable.hpp"
35 #include "code/codeCache.hpp"
36 #include "compiler/compilationPolicy.hpp"
37 #include "compiler/methodMatcher.hpp"
38 #include "compiler/directivesParser.hpp"
39 #include "gc/shared/concurrentGCBreakpoints.hpp"
40 #include "gc/shared/gcConfig.hpp"
41 #include "gc/shared/genArguments.hpp"
42 #include "gc/shared/genCollectedHeap.hpp"
43 #include "jvmtifiles/jvmtiEnv.hpp"
44 #include "logging/log.hpp"
45 #include "memory/filemap.hpp"
46 #include "memory/heapShared.inline.hpp"
47 #include "memory/metaspaceShared.hpp"
48 #include "memory/metadataFactory.hpp"
49 #include "memory/metaspace/metaspace_test.hpp"
50 #include "memory/iterator.hpp"
51 #include "memory/resourceArea.hpp"
52 #include "memory/universe.hpp"
53 #include "memory/oopFactory.hpp"
54 #include "oops/array.hpp"
55 #include "oops/compressedOops.hpp"
56 #include "oops/constantPool.inline.hpp"
57 #include "oops/method.inline.hpp"
58 #include "oops/objArrayKlass.hpp"
59 #include "oops/objArrayOop.inline.hpp"
60 #include "oops/oop.inline.hpp"
61 #include "oops/typeArrayOop.inline.hpp"
62 #include "prims/resolvedMethodTable.hpp"
63 #include "prims/wbtestmethods/parserTests.hpp"
64 #include "prims/whitebox.inline.hpp"
65 #include "runtime/arguments.hpp"
66 #include "runtime/atomic.hpp"
67 #include "runtime/deoptimization.hpp"
68 #include "runtime/fieldDescriptor.inline.hpp"
69 #include "runtime/flags/jvmFlag.hpp"
70 #include "runtime/frame.inline.hpp"
71 #include "runtime/handles.inline.hpp"
72 #include "runtime/handshake.hpp"
73 #include "runtime/interfaceSupport.inline.hpp"
74 #include "runtime/javaCalls.hpp"
75 #include "runtime/jniHandles.inline.hpp"
76 #include "runtime/os.hpp"
77 #include "runtime/sweeper.hpp"
78 #include "runtime/synchronizer.hpp"
79 #include "runtime/thread.hpp"
80 #include "runtime/threadSMR.hpp"
81 #include "runtime/vm_version.hpp"
82 #include "services/memoryService.hpp"
83 #include "utilities/align.hpp"
84 #include "utilities/debug.hpp"
85 #include "utilities/elfFile.hpp"
86 #include "utilities/exceptions.hpp"
87 #include "utilities/macros.hpp"
88 #include "utilities/ostream.hpp"
89 #if INCLUDE_CDS
90 #include "prims/cdsoffsets.hpp"
91 #endif // INCLUDE_CDS
92 #if INCLUDE_G1GC
93 #include "gc/g1/g1Arguments.hpp"
94 #include "gc/g1/g1CollectedHeap.inline.hpp"
95 #include "gc/g1/g1ConcurrentMark.hpp"
96 #include "gc/g1/g1ConcurrentMarkThread.hpp"
97 #include "gc/g1/heapRegionRemSet.hpp"
98 #include "gc/g1/heterogeneousHeapRegionManager.hpp"
99 #endif // INCLUDE_G1GC
100 #if INCLUDE_PARALLELGC
101 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
102 #endif // INCLUDE_PARALLELGC
103 #if INCLUDE_NMT
104 #include "services/mallocSiteTable.hpp"
105 #include "services/memTracker.hpp"
106 #include "utilities/nativeCallStack.hpp"
107 #endif // INCLUDE_NMT
108 #if INCLUDE_AOT
109 #include "aot/aotLoader.hpp"
110 #endif // INCLUDE_AOT
111
112 #ifdef LINUX
113 #include "osContainer_linux.hpp"
114 #include "cgroupSubsystem_linux.hpp"
115 #endif
116
117 #define SIZE_T_MAX_VALUE ((size_t) -1)
118
119 #define CHECK_JNI_EXCEPTION_(env, value) \
120 do { \
121 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
122 THREAD->clear_pending_jni_exception_check(); \
123 if (HAS_PENDING_EXCEPTION) { \
124 return(value); \
125 } \
126 } while (0)
127
128 #define CHECK_JNI_EXCEPTION(env) \
129 do { \
130 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
131 THREAD->clear_pending_jni_exception_check(); \
132 if (HAS_PENDING_EXCEPTION) { \
133 return; \
134 } \
135 } while (0)
136
137 bool WhiteBox::_used = false;
138 volatile bool WhiteBox::compilation_locked = false;
139
140 class VM_WhiteBoxOperation : public VM_Operation {
141 public:
142 VM_WhiteBoxOperation() { }
143 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
144 bool allow_nested_vm_operations() const { return true; }
145 };
146
147
148 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
149 return (jlong)(void*)JNIHandles::resolve(obj);
150 WB_END
151
152 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
153 return heapOopSize;
154 WB_END
155
156 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
157 return os::vm_page_size();
158 WB_END
159
160 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
161 return os::vm_allocation_granularity();
162 WB_END
163
164 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
165 return os::large_page_size();
166 WB_END
167
168 class WBIsKlassAliveClosure : public LockedClassesDo {
169 Symbol* _name;
170 int _count;
171 public:
172 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
173
174 void do_klass(Klass* k) {
175 Symbol* ksym = k->name();
176 if (ksym->fast_compare(_name) == 0) {
177 _count++;
178 }
179 }
180
181 int count() const {
182 return _count;
183 }
184 };
185
186 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
187 oop h_name = JNIHandles::resolve(name);
188 if (h_name == NULL) return false;
189 Symbol* sym = java_lang_String::as_symbol(h_name);
190 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
191
192 WBIsKlassAliveClosure closure(sym);
193 ClassLoaderDataGraph::classes_do(&closure);
194
195 // Return the count of alive classes with this name.
196 return closure.count();
197 WB_END
198
199 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
200 oop h_name = JNIHandles::resolve(name);
201 if (h_name == NULL) return false;
202 Symbol* sym = java_lang_String::as_symbol(h_name);
203 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
204 return (jint)sym->refcount();
205 WB_END
206
207
208 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
209 #if INCLUDE_JVMTI
210 ResourceMark rm;
211 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
212 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
213 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
214 assert(err == JVMTI_ERROR_NONE, "must not fail");
215 #endif
216 }
217 WB_END
218
219 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
220 #if INCLUDE_JVMTI
221 ResourceMark rm;
222 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
223 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
224 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
225 assert(err == JVMTI_ERROR_NONE, "must not fail");
226 #endif
227 }
228 WB_END
229
230
231 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
232 return (jlong)Arguments::max_heap_for_compressed_oops();
233 }
234 WB_END
235
236 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
237 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
238 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
239 MinHeapSize,
240 InitialHeapSize,
241 MaxHeapSize,
242 SpaceAlignment,
243 HeapAlignment);
244 }
245 WB_END
246
247 #ifndef PRODUCT
248 // Forward declaration
249 void TestReservedSpace_test();
250 void TestReserveMemorySpecial_test();
251 void TestVirtualSpace_test();
252 #endif
253
254 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
255 #ifndef PRODUCT
256 TestReservedSpace_test();
257 TestReserveMemorySpecial_test();
258 TestVirtualSpace_test();
259 #endif
260 WB_END
261
262 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
263 size_t granularity = os::vm_allocation_granularity();
264 ReservedHeapSpace rhs(100 * granularity, granularity, false);
265 VirtualSpace vs;
266 vs.initialize(rhs, 50 * granularity);
267
268 // Check if constraints are complied
269 if (!( UseCompressedOops && rhs.base() != NULL &&
270 CompressedOops::base() != NULL &&
271 CompressedOops::use_implicit_null_checks() )) {
272 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
273 "\tUseCompressedOops is %d\n"
274 "\trhs.base() is " PTR_FORMAT "\n"
275 "\tCompressedOops::base() is " PTR_FORMAT "\n"
276 "\tCompressedOops::use_implicit_null_checks() is %d",
277 UseCompressedOops,
278 p2i(rhs.base()),
279 p2i(CompressedOops::base()),
280 CompressedOops::use_implicit_null_checks());
281 return;
282 }
283 tty->print_cr("Reading from no access area... ");
284 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
285 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
286 WB_END
287
288 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
289 size_t magnitude, size_t iterations) {
290 size_t granularity = os::vm_allocation_granularity();
291 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
292 VirtualSpace vs;
293 if (!vs.initialize(rhs, 0)) {
294 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
295 return 3;
296 }
297
298 int seed = os::random();
299 tty->print_cr("Random seed is %d", seed);
300 os::init_random(seed);
301
302 for (size_t i = 0; i < iterations; i++) {
303
304 // Whether we will shrink or grow
305 bool shrink = os::random() % 2L == 0;
306
307 // Get random delta to resize virtual space
308 size_t delta = (size_t)os::random() % magnitude;
309
310 // If we are about to shrink virtual space below zero, then expand instead
311 if (shrink && vs.committed_size() < delta) {
312 shrink = false;
313 }
314
315 // Resizing by delta
316 if (shrink) {
317 vs.shrink_by(delta);
318 } else {
319 // If expanding fails expand_by will silently return false
320 vs.expand_by(delta, true);
321 }
322 }
323 return 0;
324 }
325
326 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
327 jlong reserved_space_size, jlong magnitude, jlong iterations))
328 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
329 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
330 iterations);
331 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
332 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
333 return 1;
334 }
335
336 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
337 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
338 if (sizeof(size_t) < sizeof(jlong)) {
339 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
340 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
341 || iterations > size_t_max_value) {
342 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
343 return 2;
344 }
345 }
346
347 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
348 (size_t) magnitude, (size_t) iterations);
349 WB_END
350
351 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
352 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
353 WB_END
354
355 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
356 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
357 WB_END
358
359 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
360 return GCConfig::is_gc_selected_ergonomically();
361 WB_END
362
363 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
364 oop p = JNIHandles::resolve(obj);
365 #if INCLUDE_G1GC
366 if (UseG1GC) {
367 G1CollectedHeap* g1h = G1CollectedHeap::heap();
368 const HeapRegion* hr = g1h->heap_region_containing(p);
369 if (hr == NULL) {
370 return false;
371 }
372 return !(hr->is_young());
373 }
374 #endif
375 #if INCLUDE_PARALLELGC
376 if (UseParallelGC) {
377 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
378 return !psh->is_in_young(p);
379 }
380 #endif
381 #if INCLUDE_ZGC
382 if (UseZGC) {
383 return Universe::heap()->is_in(p);
384 }
385 #endif
386 GenCollectedHeap* gch = GenCollectedHeap::heap();
387 return !gch->is_in_young(p);
388 WB_END
389
390 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
391 oop p = JNIHandles::resolve(obj);
392 return p->size() * HeapWordSize;
393 WB_END
394
395 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
396 return (jlong)SpaceAlignment;
397 WB_END
398
399 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
400 return (jlong)HeapAlignment;
401 WB_END
402
403 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
404 return Universe::heap()->supports_concurrent_gc_breakpoints();
405 WB_END
406
407 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
408 ConcurrentGCBreakpoints::acquire_control();
409 WB_END
410
411 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
412 ConcurrentGCBreakpoints::release_control();
413 WB_END
414
415 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
416 ConcurrentGCBreakpoints::run_to_idle();
417 WB_END
418
419 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
420 Handle h_name(THREAD, JNIHandles::resolve(at));
421 ResourceMark rm;
422 const char* c_name = java_lang_String::as_utf8_string(h_name());
423 return ConcurrentGCBreakpoints::run_to(c_name);
424 WB_END
425
426 #if INCLUDE_G1GC
427
428 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
429 if (UseG1GC) {
430 G1CollectedHeap* g1h = G1CollectedHeap::heap();
431 oop result = JNIHandles::resolve(obj);
432 const HeapRegion* hr = g1h->heap_region_containing(result);
433 return hr->is_humongous();
434 }
435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
436 WB_END
437
438 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
439 if (UseG1GC) {
440 G1CollectedHeap* g1h = G1CollectedHeap::heap();
441 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
442 return hr->is_humongous();
443 }
444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
445 WB_END
446
447 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
448 if (UseG1GC) {
449 G1CollectedHeap* g1h = G1CollectedHeap::heap();
450 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
451 return hr->is_free();
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1h = G1CollectedHeap::heap();
459 size_t nr = g1h->max_regions();
460 return (jlong)nr;
461 }
462 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
463 WB_END
464
465 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
466 if (UseG1GC) {
467 G1CollectedHeap* g1h = G1CollectedHeap::heap();
468 size_t nr = g1h->num_free_regions();
469 return (jlong)nr;
470 }
471 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
472 WB_END
473
474 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
475 if (UseG1GC) {
476 G1CollectedHeap* g1h = G1CollectedHeap::heap();
477 return g1h->concurrent_mark()->cm_thread()->during_cycle();
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
483 if (UseG1GC) {
484 G1CollectedHeap* g1h = G1CollectedHeap::heap();
485 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
486 g1h->collect(GCCause::_wb_conc_mark);
487 return true;
488 }
489 return false;
490 }
491 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
492 WB_END
493
494 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
495 if (UseG1GC) {
496 return (jint)HeapRegion::GrainBytes;
497 }
498 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
499 WB_END
500
501 #endif // INCLUDE_G1GC
502
503 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
504 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o))
505 #if INCLUDE_G1GC
506 if (UseG1GC) {
507 G1CollectedHeap* g1h = G1CollectedHeap::heap();
508 if (g1h->is_heterogeneous_heap()) {
509 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram();
510 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
511 } else {
512 return (jlong)g1h->base();
513 }
514 }
515 #endif // INCLUDE_G1GC
516 #if INCLUDE_PARALLELGC
517 if (UseParallelGC) {
518 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
519 if (AllocateOldGenAt != NULL) {
520 MemRegion reserved = ps_heap->young_gen()->reserved();
521 return (jlong)reserved.start();
522 } else {
523 return (jlong)ps_heap->base();
524 }
525 }
526 #endif // INCLUDE_PARALLELGC
527 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC");
528 WB_END
529
530 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o))
531 #if INCLUDE_G1GC
532 if (UseG1GC) {
533 G1CollectedHeap* g1h = G1CollectedHeap::heap();
534 if (g1h->is_heterogeneous_heap()) {
535 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram();
536 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
537 } else {
538 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes();
539 }
540 }
541 #endif // INCLUDE_G1GC
542 #if INCLUDE_PARALLELGC
543 if (UseParallelGC) {
544 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
545 if (AllocateOldGenAt != NULL) {
546 MemRegion reserved = ps_heap->young_gen()->reserved();
547 return (jlong)reserved.end();
548 } else {
549 return (jlong)ps_heap->reserved_region().end();
550 }
551 }
552 #endif // INCLUDE_PARALLELGC
553 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC");
554 WB_END
555
556 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o))
557 #if INCLUDE_G1GC
558 if (UseG1GC) {
559 G1CollectedHeap* g1h = G1CollectedHeap::heap();
560 if (g1h->is_heterogeneous_heap()) {
561 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
562 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
563 } else {
564 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
565 }
566 }
567 #endif // INCLUDE_G1GC
568 #if INCLUDE_PARALLELGC
569 if (UseParallelGC) {
570 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
571 if (AllocateOldGenAt != NULL) {
572 MemRegion reserved = ps_heap->old_gen()->reserved();
573 return (jlong)reserved.start();
574 } else {
575 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
576 }
577 }
578 #endif // INCLUDE_PARALLELGC
579 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC");
580 WB_END
581
582 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o))
583 #if INCLUDE_G1GC
584 if (UseG1GC) {
585 G1CollectedHeap* g1h = G1CollectedHeap::heap();
586 if (g1h->is_heterogeneous_heap()) {
587 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
588 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
589 } else {
590 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
591 }
592 }
593 #endif // INCLUDE_G1GC
594 #if INCLUDE_PARALLELGC
595 if (UseParallelGC) {
596 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
597 if (AllocateOldGenAt != NULL) {
598 MemRegion reserved = ps_heap->old_gen()->reserved();
599 return (jlong)reserved.end();
600 } else {
601 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
602 }
603 }
604 #endif // INCLUDE_PARALLELGC
605 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC");
606 WB_END
607
608 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
609
610 #if INCLUDE_PARALLELGC
611
612 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
613 if (UseParallelGC) {
614 return GenAlignment;
615 }
616 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
617 WB_END
618
619 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
620 if (UseParallelGC) {
621 return GenAlignment;
622 }
623 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
624 WB_END
625
626 #endif // INCLUDE_PARALLELGC
627
628 #if INCLUDE_G1GC
629
630 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
631 if (UseG1GC) {
632 ResourceMark rm(THREAD);
633 G1CollectedHeap* g1h = G1CollectedHeap::heap();
634 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
635 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
636 return JNIHandles::make_local(THREAD, h());
637 }
638 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
639 WB_END
640
641 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
642 if (UseG1GC) {
643 G1NUMA* numa = G1NUMA::numa();
644 return (jint)numa->num_active_nodes();
645 }
646 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
647 WB_END
648
649 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
650 if (UseG1GC) {
651 G1NUMA* numa = G1NUMA::numa();
652 int num_node_ids = (int)numa->num_active_nodes();
653 const int* node_ids = numa->node_ids();
654
655 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
656 for (int i = 0; i < num_node_ids; i++) {
657 result->int_at_put(i, (jint)node_ids[i]);
658 }
659 return (jintArray) JNIHandles::make_local(THREAD, result);
660 }
661 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
662 WB_END
663
664 class OldRegionsLivenessClosure: public HeapRegionClosure {
665
666 private:
667 const int _liveness;
668 size_t _total_count;
669 size_t _total_memory;
670 size_t _total_memory_to_free;
671
672 public:
673 OldRegionsLivenessClosure(int liveness) :
674 _liveness(liveness),
675 _total_count(0),
676 _total_memory(0),
677 _total_memory_to_free(0) { }
678
679 size_t total_count() { return _total_count; }
680 size_t total_memory() { return _total_memory; }
681 size_t total_memory_to_free() { return _total_memory_to_free; }
682
683 bool do_heap_region(HeapRegion* r) {
684 if (r->is_old()) {
685 size_t prev_live = r->marked_bytes();
686 size_t live = r->live_bytes();
687 size_t size = r->used();
688 size_t reg_size = HeapRegion::GrainBytes;
689 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
690 _total_memory += size;
691 ++_total_count;
692 if (size == reg_size) {
693 // we don't include non-full regions since they are unlikely included in mixed gc
694 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
695 _total_memory_to_free += size - prev_live;
696 }
697 }
698 }
699 return false;
700 }
701 };
702
703
704 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
705 if (!UseG1GC) {
706 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
707 }
708 if (liveness < 0) {
709 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
710 }
711
712 G1CollectedHeap* g1h = G1CollectedHeap::heap();
713 OldRegionsLivenessClosure rli(liveness);
714 g1h->heap_region_iterate(&rli);
715
716 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
717 result->long_at_put(0, rli.total_count());
718 result->long_at_put(1, rli.total_memory());
719 result->long_at_put(2, rli.total_memory_to_free());
720 return (jlongArray) JNIHandles::make_local(THREAD, result);
721 WB_END
722
723 #endif // INCLUDE_G1GC
724
725 #if INCLUDE_NMT
726 // Alloc memory using the test memory type so that we can use that to see if
727 // NMT picks it up correctly
728 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
729 jlong addr = 0;
730 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
731 return addr;
732 WB_END
733
734 // Alloc memory with pseudo call stack. The test can create psudo malloc
735 // allocation site to stress the malloc tracking.
736 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
737 address pc = (address)(size_t)pseudo_stack;
738 NativeCallStack stack(&pc, 1);
739 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
740 WB_END
741
742 // Alloc memory with pseudo call stack and specific memory type.
743 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
744 address pc = (address)(size_t)pseudo_stack;
745 NativeCallStack stack(&pc, 1);
746 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
747 WB_END
748
749 // Free the memory allocated by NMTAllocTest
750 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
751 os::free((void*)(uintptr_t)mem);
752 WB_END
753
754 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
755 jlong addr = 0;
756
757 addr = (jlong)(uintptr_t)os::reserve_memory(size);
758 MemTracker::record_virtual_memory_type((address)addr, mtTest);
759
760 return addr;
761 WB_END
762
763 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
764 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
765 MemTracker::record_virtual_memory_type((address)addr, mtTest);
766
767 return addr;
768 WB_END
769
770 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
771 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
772 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
773 WB_END
774
775 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
776 os::uncommit_memory((char *)(uintptr_t)addr, size);
777 WB_END
778
779 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
780 os::release_memory((char *)(uintptr_t)addr, size);
781 WB_END
782
783 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
784 // Test that we can downgrade NMT levels but not upgrade them.
785 if (MemTracker::tracking_level() == NMT_off) {
786 MemTracker::transition_to(NMT_off);
787 return MemTracker::tracking_level() == NMT_off;
788 } else {
789 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
790 MemTracker::transition_to(NMT_summary);
791 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
792
793 // Can't go to detail once NMT is set to summary.
794 MemTracker::transition_to(NMT_detail);
795 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
796
797 // Shutdown sets tracking level to minimal.
798 MemTracker::shutdown();
799 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
800
801 // Once the tracking level is minimal, we cannot increase to summary.
802 // The code ignores this request instead of asserting because if the malloc site
803 // table overflows in another thread, it tries to change the code to summary.
804 MemTracker::transition_to(NMT_summary);
805 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
806
807 // Really can never go up to detail, verify that the code would never do this.
808 MemTracker::transition_to(NMT_detail);
809 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
810 return MemTracker::tracking_level() == NMT_minimal;
811 }
812 WB_END
813
814 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
815 int hash_size = MallocSiteTable::hash_buckets();
816 assert(hash_size > 0, "NMT hash_size should be > 0");
817 return (jint)hash_size;
818 WB_END
819
820 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
821 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
822 return (jlong)arena;
823 WB_END
824
825 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
826 Arena* a = (Arena*)arena;
827 delete a;
828 WB_END
829
830 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
831 Arena* a = (Arena*)arena;
832 a->Amalloc(size_t(size));
833 WB_END
834 #endif // INCLUDE_NMT
835
836 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
837 assert(method != NULL, "method should not be null");
838 ThreadToNativeFromVM ttn(thread);
839 return env->FromReflectedMethod(method);
840 }
841
842 static CompLevel highestCompLevel() {
843 return TieredCompilation ? MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) : CompLevel_highest_tier;
844 }
845
846 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
847 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
848 private:
849 int _result;
850 const bool _make_not_entrant;
851 public:
852 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
853 _result(0), _make_not_entrant(make_not_entrant) { }
854 int result() const { return _result; }
855
856 void doit() {
857 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
858 if (t->has_last_Java_frame()) {
859 for (StackFrameStream fst(t, false); !fst.is_done(); fst.next()) {
860 frame* f = fst.current();
861 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
862 Deoptimization::deoptimize(t, *f);
863 if (_make_not_entrant) {
864 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
865 assert(cm != NULL, "sanity check");
866 cm->make_not_entrant();
867 }
868 ++_result;
869 }
870 }
871 }
872 }
873 }
874 };
875
876 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
877 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
878 VMThread::execute(&op);
879 return op.result();
880 WB_END
881
882 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
883 CodeCache::mark_all_nmethods_for_deoptimization();
884 Deoptimization::deoptimize_all_marked();
885 WB_END
886
887 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
888 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
889 int result = 0;
890 CHECK_JNI_EXCEPTION_(env, result);
891 MutexLocker mu(Compile_lock);
892 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
893 if (is_osr) {
894 result += mh->mark_osr_nmethods();
895 } else if (mh->code() != NULL) {
896 mh->code()->mark_for_deoptimization();
897 ++result;
898 }
899 result += CodeCache::mark_for_deoptimization(mh());
900 if (result > 0) {
901 Deoptimization::deoptimize_all_marked();
902 }
903 return result;
904 WB_END
905
906 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
907 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
908 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
909 MutexLocker mu(Compile_lock);
910 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
911 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
912 if (code == NULL) {
913 return JNI_FALSE;
914 }
915 return (code->is_alive() && !code->is_marked_for_deoptimization());
916 WB_END
917
918 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
919 if (method == NULL || comp_level > highestCompLevel()) {
920 return false;
921 }
922 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
923 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
924 MutexLocker mu(Compile_lock);
925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
926 if (is_osr) {
927 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
928 } else {
929 return CompilationPolicy::can_be_compiled(mh, comp_level);
930 }
931 WB_END
932
933 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
934 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
935 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
936 MutexLocker mu(Compile_lock);
937 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
938 return mh->queued_for_compilation();
939 WB_END
940
941 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
942 if (compLevel < CompLevel_none || compLevel > highestCompLevel()) {
943 return false; // Intrinsic is not available on a non-existent compilation level.
944 }
945 jmethodID method_id, compilation_context_id;
946 method_id = reflected_method_to_jmid(thread, env, method);
947 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
948 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
949
950 DirectiveSet* directive;
951 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
952 assert(comp != NULL, "compiler not available");
953 if (compilation_context != NULL) {
954 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
955 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
956 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
957 directive = DirectivesStack::getMatchingDirective(cch, comp);
958 } else {
959 // Calling with NULL matches default directive
960 directive = DirectivesStack::getDefaultDirective(comp);
961 }
962 bool result = comp->is_intrinsic_available(mh, directive);
963 DirectivesStack::release(directive);
964 return result;
965 WB_END
966
967 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
968 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
969 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
970 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
971 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
972 return (code != NULL ? code->comp_level() : CompLevel_none);
973 WB_END
974
975 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
976 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
977 CHECK_JNI_EXCEPTION(env);
978 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
979 if (is_osr) {
980 mh->set_not_osr_compilable("WhiteBox", comp_level);
981 } else {
982 mh->set_not_compilable("WhiteBox", comp_level);
983 }
984 WB_END
985
986 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
987 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
988 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
989 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
990 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
991 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
992 WB_END
993
994 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
995 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
996 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
997 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
998 bool result = mh->dont_inline();
999 mh->set_dont_inline(value == JNI_TRUE);
1000 return result;
1001 WB_END
1002
1003 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1004 if (comp_level == CompLevel_any) {
1005 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1006 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1007 } else {
1008 return CompileBroker::queue_size(comp_level);
1009 }
1010 WB_END
1011
1012 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1013 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1014 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1015 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1016 bool result = mh->force_inline();
1017 mh->set_force_inline(value == JNI_TRUE);
1018 return result;
1019 WB_END
1020
1021 #ifdef LINUX
1022 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1023 const char* proc_self_cgroup,
1024 const char* proc_self_mountinfo,
1025 u1* cg_flags) {
1026 CgroupInfo cg_infos[4];
1027 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1028 proc_self_cgroup,
1029 proc_self_mountinfo, cg_flags);
1030 }
1031 #endif
1032
1033 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
1034 // Screen for unavailable/bad comp level or null method
1035 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1036 if (method == NULL) {
1037 tty->print_cr("WB error: request to compile NULL method");
1038 return false;
1039 }
1040 if (comp_level > highestCompLevel()) {
1041 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1042 return false;
1043 }
1044 if (comp == NULL) {
1045 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1046 return false;
1047 }
1048
1049 // Check if compilation is blocking
1050 methodHandle mh(THREAD, method);
1051 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1052 bool is_blocking = !directive->BackgroundCompilationOption;
1053 DirectivesStack::release(directive);
1054
1055 // Compile method and check result
1056 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
1057 MutexLocker mu(THREAD, Compile_lock);
1058 bool is_queued = mh->queued_for_compilation();
1059 if ((!is_blocking && is_queued) || nm != NULL) {
1060 return true;
1061 }
1062 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1063 mh->print_short_name(tty);
1064 tty->cr();
1065 if (is_blocking && is_queued) {
1066 tty->print_cr("WB error: blocking compilation is still in queue!");
1067 }
1068 return false;
1069 }
1070
1071 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1072 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1073 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1074 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1075 WB_END
1076
1077 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1078 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1079 Method* clinit = ik->class_initializer();
1080 if (clinit == NULL) {
1081 return false;
1082 }
1083 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1084 WB_END
1085
1086 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1087 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1088 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1089
1090 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1091 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1092 bool result = directive->PrintAssemblyOption;
1093 DirectivesStack::release(directive);
1094
1095 return result;
1096 WB_END
1097
1098 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1099 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1100 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1101
1102 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1103
1104 ResourceMark rm(THREAD);
1105 const char* error_msg = NULL;
1106 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1107 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1108
1109 if (m == NULL) {
1110 assert(error_msg != NULL, "Always have an error message");
1111 tty->print_cr("Got error: %s", error_msg);
1112 return -1; // Pattern failed
1113 }
1114
1115 // Pattern works - now check if it matches
1116 int result;
1117 if (m->match(mh, InlineMatcher::force_inline)) {
1118 result = 2; // Force inline match
1119 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1120 result = 1; // Dont inline match
1121 } else {
1122 result = 0; // No match
1123 }
1124 delete m;
1125 return result;
1126 WB_END
1127
1128 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1129 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1130 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1131
1132 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1133
1134 ResourceMark rm;
1135 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1136
1137 const char* error_msg = NULL;
1138
1139 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
1140 if (m == NULL) {
1141 assert(error_msg != NULL, "Must have error_msg");
1142 tty->print_cr("Got error: %s", error_msg);
1143 return -1;
1144 }
1145
1146 // Pattern works - now check if it matches
1147 int result = m->matches(mh);
1148 delete m;
1149 assert(result == 0 || result == 1, "Result out of range");
1150 return result;
1151 WB_END
1152
1153 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1154 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1155 CHECK_JNI_EXCEPTION(env);
1156 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1157
1158 MethodData* mdo = mh->method_data();
1159 if (mdo == NULL) {
1160 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1161 mdo = mh->method_data();
1162 }
1163 mdo->init();
1164 InvocationCounter* icnt = mdo->invocation_counter();
1165 InvocationCounter* bcnt = mdo->backedge_counter();
1166 // set i-counter according to TieredThresholdPolicy::is_method_profiled
1167 icnt->set(Tier4MinInvocationThreshold);
1168 bcnt->set(Tier4CompileThreshold);
1169 WB_END
1170
1171 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1172 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1173 CHECK_JNI_EXCEPTION(env);
1174 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1175 MutexLocker mu(THREAD, Compile_lock);
1176 MethodData* mdo = mh->method_data();
1177 MethodCounters* mcs = mh->method_counters();
1178
1179 if (mdo != NULL) {
1180 mdo->init();
1181 ResourceMark rm(THREAD);
1182 int arg_count = mdo->method()->size_of_parameters();
1183 for (int i = 0; i < arg_count; i++) {
1184 mdo->set_arg_modified(i, 0);
1185 }
1186 MutexLocker mu(THREAD, mdo->extra_data_lock());
1187 mdo->clean_method_data(/*always_clean*/true);
1188 }
1189
1190 mh->clear_not_c1_compilable();
1191 mh->clear_not_c2_compilable();
1192 mh->clear_not_c2_osr_compilable();
1193 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1194 if (mcs != NULL) {
1195 mcs->backedge_counter()->init();
1196 mcs->invocation_counter()->init();
1197 mcs->set_interpreter_invocation_count(0);
1198 mcs->set_interpreter_throwout_count(0);
1199
1200 #ifdef TIERED
1201 mcs->set_rate(0.0F);
1202 mh->set_prev_event_count(0);
1203 mh->set_prev_time(0);
1204 #endif
1205 }
1206 WB_END
1207
1208 template <typename T>
1209 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) {
1210 if (name == NULL) {
1211 return false;
1212 }
1213 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1214 const char* flag_name = env->GetStringUTFChars(name, NULL);
1215 CHECK_JNI_EXCEPTION_(env, false);
1216 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1217 JVMFlag::Error result = (*TAt)(flag, value);
1218 env->ReleaseStringUTFChars(name, flag_name);
1219 return (result == JVMFlag::SUCCESS);
1220 }
1221
1222 template <typename T>
1223 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) {
1224 if (name == NULL) {
1225 return false;
1226 }
1227 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1228 const char* flag_name = env->GetStringUTFChars(name, NULL);
1229 CHECK_JNI_EXCEPTION_(env, false);
1230 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1231 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL);
1232 env->ReleaseStringUTFChars(name, flag_name);
1233 return (result == JVMFlag::SUCCESS);
1234 }
1235
1236 template <typename T>
1237 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1238 ResourceMark rm(thread);
1239 jclass clazz = env->FindClass(name->as_C_string());
1240 CHECK_JNI_EXCEPTION_(env, NULL);
1241 jmethodID methodID = env->GetStaticMethodID(clazz,
1242 vmSymbols::valueOf_name()->as_C_string(),
1243 sig->as_C_string());
1244 CHECK_JNI_EXCEPTION_(env, NULL);
1245 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1246 CHECK_JNI_EXCEPTION_(env, NULL);
1247 return result;
1248 }
1249
1250 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1251 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1252 }
1253 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1254 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1255 }
1256 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1257 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1258 }
1259 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1260 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1261 }*/
1262 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1263 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1264 }
1265
1266 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1267 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1268 const char* flag_name = env->GetStringUTFChars(name, NULL);
1269 CHECK_JNI_EXCEPTION_(env, NULL);
1270 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1271 env->ReleaseStringUTFChars(name, flag_name);
1272 return result;
1273 }
1274
1275 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1276 const JVMFlag* flag = getVMFlag(thread, env, name);
1277 return (flag != NULL) && flag->is_constant_in_binary();
1278 WB_END
1279
1280 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1281 const JVMFlag* flag = getVMFlag(thread, env, name);
1282 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1283 WB_END
1284
1285 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1286 bool result;
1287 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1288 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1289 return booleanBox(thread, env, result);
1290 }
1291 return NULL;
1292 WB_END
1293
1294 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1295 int result;
1296 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1297 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1298 return longBox(thread, env, result);
1299 }
1300 return NULL;
1301 WB_END
1302
1303 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1304 uint result;
1305 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1306 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1307 return longBox(thread, env, result);
1308 }
1309 return NULL;
1310 WB_END
1311
1312 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1313 intx result;
1314 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1315 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1316 return longBox(thread, env, result);
1317 }
1318 return NULL;
1319 WB_END
1320
1321 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1322 uintx result;
1323 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1324 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1325 return longBox(thread, env, result);
1326 }
1327 return NULL;
1328 WB_END
1329
1330 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1331 uint64_t result;
1332 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1333 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1334 return longBox(thread, env, result);
1335 }
1336 return NULL;
1337 WB_END
1338
1339 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1340 size_t result;
1341 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1342 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1343 return longBox(thread, env, result);
1344 }
1345 return NULL;
1346 WB_END
1347
1348 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1349 double result;
1350 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1351 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1352 return doubleBox(thread, env, result);
1353 }
1354 return NULL;
1355 WB_END
1356
1357 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1358 ccstr ccstrResult;
1359 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1360 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1361 jstring result = env->NewStringUTF(ccstrResult);
1362 CHECK_JNI_EXCEPTION_(env, NULL);
1363 return result;
1364 }
1365 return NULL;
1366 WB_END
1367
1368 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1369 bool result = value == JNI_TRUE ? true : false;
1370 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1371 WB_END
1372
1373 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1374 int result = value;
1375 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1376 WB_END
1377
1378 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1379 uint result = value;
1380 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1381 WB_END
1382
1383 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1384 intx result = value;
1385 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1386 WB_END
1387
1388 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1389 uintx result = value;
1390 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1391 WB_END
1392
1393 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1394 uint64_t result = value;
1395 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1396 WB_END
1397
1398 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1399 size_t result = value;
1400 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1401 WB_END
1402
1403 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1404 double result = value;
1405 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1406 WB_END
1407
1408 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1409 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1410 const char* ccstrValue;
1411 if (value == NULL) {
1412 ccstrValue = NULL;
1413 }
1414 else {
1415 ccstrValue = env->GetStringUTFChars(value, NULL);
1416 CHECK_JNI_EXCEPTION(env);
1417 }
1418 ccstr ccstrResult = ccstrValue;
1419 bool needFree;
1420 {
1421 ThreadInVMfromNative ttvfn(thread); // back to VM
1422 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1423 }
1424 if (value != NULL) {
1425 env->ReleaseStringUTFChars(value, ccstrValue);
1426 }
1427 if (needFree) {
1428 FREE_C_HEAP_ARRAY(char, ccstrResult);
1429 }
1430 WB_END
1431
1432 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1433 WhiteBox::compilation_locked = true;
1434 WB_END
1435
1436 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1437 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1438 WhiteBox::compilation_locked = false;
1439 mo.notify_all();
1440 WB_END
1441
1442 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1443 // Force a code cache sweep and block until it finished
1444 NMethodSweeper::force_sweep();
1445 WB_END
1446
1447 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1448 ResourceMark rm(THREAD);
1449 int len;
1450 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1451 return (StringTable::lookup(name, len) != NULL);
1452 WB_END
1453
1454 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1455 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1456 Universe::heap()->collect(GCCause::_wb_full_gc);
1457 #if INCLUDE_G1GC
1458 if (UseG1GC) {
1459 // Needs to be cleared explicitly for G1
1460 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1461 }
1462 #endif // INCLUDE_G1GC
1463 WB_END
1464
1465 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1466 Universe::heap()->collect(GCCause::_wb_young_gc);
1467 WB_END
1468
1469 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1470 // static+volatile in order to force the read to happen
1471 // (not be eliminated by the compiler)
1472 static char c;
1473 static volatile char* p;
1474
1475 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1476 if (p == NULL) {
1477 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1478 }
1479
1480 c = *p;
1481 WB_END
1482
1483 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1484 const char* features = VM_Version::features_string();
1485 ThreadToNativeFromVM ttn(thread);
1486 jstring features_string = env->NewStringUTF(features);
1487
1488 CHECK_JNI_EXCEPTION_(env, NULL);
1489
1490 return features_string;
1491 WB_END
1492
1493 int WhiteBox::get_blob_type(const CodeBlob* code) {
1494 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1495 if (code->is_aot()) {
1496 return -1;
1497 }
1498 return CodeCache::get_code_heap(code)->code_blob_type();
1499 }
1500
1501 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1502 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1503 return CodeCache::get_code_heap(blob_type);
1504 }
1505
1506 struct CodeBlobStub {
1507 CodeBlobStub(const CodeBlob* blob) :
1508 name(os::strdup(blob->name())),
1509 size(blob->size()),
1510 blob_type(WhiteBox::get_blob_type(blob)),
1511 address((jlong) blob) { }
1512 ~CodeBlobStub() { os::free((void*) name); }
1513 const char* const name;
1514 const jint size;
1515 const jint blob_type;
1516 const jlong address;
1517 };
1518
1519 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1520 ResourceMark rm;
1521 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1522 CHECK_JNI_EXCEPTION_(env, NULL);
1523 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1524
1525 jstring name = env->NewStringUTF(cb->name);
1526 CHECK_JNI_EXCEPTION_(env, NULL);
1527 env->SetObjectArrayElement(result, 0, name);
1528
1529 jobject obj = integerBox(thread, env, cb->size);
1530 CHECK_JNI_EXCEPTION_(env, NULL);
1531 env->SetObjectArrayElement(result, 1, obj);
1532
1533 obj = integerBox(thread, env, cb->blob_type);
1534 CHECK_JNI_EXCEPTION_(env, NULL);
1535 env->SetObjectArrayElement(result, 2, obj);
1536
1537 obj = longBox(thread, env, cb->address);
1538 CHECK_JNI_EXCEPTION_(env, NULL);
1539 env->SetObjectArrayElement(result, 3, obj);
1540
1541 return result;
1542 }
1543
1544 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1545 ResourceMark rm(THREAD);
1546 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1547 CHECK_JNI_EXCEPTION_(env, NULL);
1548 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1549 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1550 jobjectArray result = NULL;
1551 if (code == NULL) {
1552 return result;
1553 }
1554 int comp_level = code->comp_level();
1555 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1556
1557 ThreadToNativeFromVM ttn(thread);
1558 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1559 CHECK_JNI_EXCEPTION_(env, NULL);
1560 result = env->NewObjectArray(5, clazz, NULL);
1561 if (result == NULL) {
1562 return result;
1563 }
1564
1565 CodeBlobStub stub(code);
1566 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1567 CHECK_JNI_EXCEPTION_(env, NULL);
1568 env->SetObjectArrayElement(result, 0, codeBlob);
1569
1570 jobject level = integerBox(thread, env, comp_level);
1571 CHECK_JNI_EXCEPTION_(env, NULL);
1572 env->SetObjectArrayElement(result, 1, level);
1573
1574 jbyteArray insts = env->NewByteArray(insts_size);
1575 CHECK_JNI_EXCEPTION_(env, NULL);
1576 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1577 env->SetObjectArrayElement(result, 2, insts);
1578
1579 jobject id = integerBox(thread, env, code->compile_id());
1580 CHECK_JNI_EXCEPTION_(env, NULL);
1581 env->SetObjectArrayElement(result, 3, id);
1582
1583 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1584 CHECK_JNI_EXCEPTION_(env, NULL);
1585 env->SetObjectArrayElement(result, 4, entry_point);
1586
1587 return result;
1588 WB_END
1589
1590 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1591 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1592 BufferBlob* blob;
1593 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1594 if (full_size < size) {
1595 full_size += align_up(size - full_size, oopSize);
1596 }
1597 {
1598 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1599 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1600 if (blob != NULL) {
1601 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1602 }
1603 }
1604 // Track memory usage statistic after releasing CodeCache_lock
1605 MemoryService::track_code_cache_memory_usage();
1606 return blob;
1607 }
1608
1609 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1610 if (size < 0) {
1611 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1612 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1613 }
1614 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1615 WB_END
1616
1617 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1618 if (addr == 0) {
1619 return;
1620 }
1621 BufferBlob::free((BufferBlob*) addr);
1622 WB_END
1623
1624 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1625 ResourceMark rm;
1626 GrowableArray<CodeBlobStub*> blobs;
1627 {
1628 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1629 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1630 if (heap == NULL) {
1631 return NULL;
1632 }
1633 for (CodeBlob* cb = (CodeBlob*) heap->first();
1634 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1635 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1636 new (stub) CodeBlobStub(cb);
1637 blobs.append(stub);
1638 }
1639 }
1640 ThreadToNativeFromVM ttn(thread);
1641 jobjectArray result = NULL;
1642 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1643 CHECK_JNI_EXCEPTION_(env, NULL);
1644 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1645 CHECK_JNI_EXCEPTION_(env, NULL);
1646 if (result == NULL) {
1647 return result;
1648 }
1649 int i = 0;
1650 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1651 it != blobs.end(); ++it) {
1652 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1653 CHECK_JNI_EXCEPTION_(env, NULL);
1654 env->SetObjectArrayElement(result, i, obj);
1655 CHECK_JNI_EXCEPTION_(env, NULL);
1656 ++i;
1657 }
1658 return result;
1659 WB_END
1660
1661 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1662 return CompileBroker::get_compilation_activity_mode();
1663 WB_END
1664
1665 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1666 if (addr == 0) {
1667 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1668 "WB_GetCodeBlob: addr is null");
1669 }
1670 ThreadToNativeFromVM ttn(thread);
1671 CodeBlobStub stub((CodeBlob*) addr);
1672 return codeBlob2objectArray(thread, env, &stub);
1673 WB_END
1674
1675 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1676 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1677 CHECK_JNI_EXCEPTION_(env, 0);
1678 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1679 return (jlong) mh->method_data();
1680 WB_END
1681
1682 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1683 return (jlong) thread->stack_size();
1684 WB_END
1685
1686 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1687 return (jlong) thread->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1688 WB_END
1689
1690
1691 int WhiteBox::array_bytes_to_length(size_t bytes) {
1692 return Array<u1>::bytes_to_length(bytes);
1693 }
1694
1695 ///////////////
1696 // MetaspaceTestContext and MetaspaceTestArena
1697 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1698 metaspace::MetaspaceTestContext* context =
1699 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1700 return (jlong)p2i(context);
1701 WB_END
1702
1703 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1704 delete (metaspace::MetaspaceTestContext*) context;
1705 WB_END
1706
1707 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1708 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1709 context0->purge_area();
1710 WB_END
1711
1712 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1713 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1714 context0->print_on(tty);
1715 WB_END
1716
1717 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1718 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1719 return context0->committed_words();
1720 WB_END
1721
1722 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1723 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1724 return context0->used_words();
1725 WB_END
1726
1727 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1728 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1729 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1730 return (jlong)p2i(context0->create_arena(type));
1731 WB_END
1732
1733 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1734 delete (metaspace::MetaspaceTestArena*) arena;
1735 WB_END
1736
1737 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1738 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1739 MetaWord* p = arena0->allocate((size_t) word_size);
1740 return (jlong)p2i(p);
1741 WB_END
1742
1743 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1744 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1745 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1746 WB_END
1747
1748 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1749 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1750 WB_END
1751
1752 //////////////
1753
1754 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1755 if (size < 0) {
1756 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1757 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1758 }
1759
1760 oop class_loader_oop = JNIHandles::resolve(class_loader);
1761 ClassLoaderData* cld = class_loader_oop != NULL
1762 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1763 : ClassLoaderData::the_null_class_loader_data();
1764
1765 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1766
1767 return (jlong)(uintptr_t)metadata;
1768 WB_END
1769
1770 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1771 jstring version, jstring location, jobjectArray packages))
1772 Modules::define_module(module, is_open, version, location, packages, CHECK);
1773 WB_END
1774
1775 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1776 Modules::add_module_exports_qualified(from_module, package, to_module, CHECK);
1777 WB_END
1778
1779 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1780 Modules::add_module_exports_to_all_unnamed(module, package, CHECK);
1781 WB_END
1782
1783 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1784 Modules::add_module_exports(module, package, NULL, CHECK);
1785 WB_END
1786
1787 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1788 Modules::add_reads_module(from_module, source_module, CHECK);
1789 WB_END
1790
1791 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1792 if (inc < 0) {
1793 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1794 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1795 }
1796
1797 jlong max_size_t = (jlong) ((size_t) -1);
1798 if (inc > max_size_t) {
1799 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1800 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1801 }
1802
1803 size_t new_cap_until_GC = 0;
1804 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1805 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1806 if (!success) {
1807 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1808 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1809 "due to contention with another thread");
1810 }
1811 return (jlong) new_cap_until_GC;
1812 WB_END
1813
1814 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1815 return (jlong) MetaspaceGC::capacity_until_GC();
1816 WB_END
1817
1818 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1819 return (jlong)Metaspace::reserve_alignment();
1820 WB_END
1821
1822 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1823 Mutex::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1824 Mutex::_safepoint_check_always :
1825 Mutex::_safepoint_check_never;
1826 Mutex::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ?
1827 Mutex::_no_safepoint_check_flag :
1828 Mutex::_safepoint_check_flag;
1829 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1830 sfpt_check_attempted);
1831 WB_END
1832
1833 WB_ENTRY(void, WB_AssertSpecialLock(JNIEnv* env, jobject o, jboolean allowVMBlock, jboolean safepointCheck))
1834 // Create a special lock violating condition in value
1835 Mutex::SafepointCheckRequired sfpt_check_required = safepointCheck ?
1836 Mutex::_safepoint_check_always :
1837 Mutex::_safepoint_check_never;
1838 Mutex::SafepointCheckFlag safepoint_check = safepointCheck ?
1839 Monitor::_safepoint_check_flag :
1840 Monitor::_no_safepoint_check_flag;
1841
1842 MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", allowVMBlock, sfpt_check_required), safepoint_check);
1843 // If the lock above succeeds, try to safepoint to test the NSV implied with this special lock.
1844 ThreadBlockInVM tbivm(thread);
1845 WB_END
1846
1847 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1848 oop obj_oop = JNIHandles::resolve(obj);
1849 return (jboolean) obj_oop->mark().has_monitor();
1850 WB_END
1851
1852 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1853 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1854 return ObjectSynchronizer::request_deflate_idle_monitors();
1855 WB_END
1856
1857 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1858 VM_ForceSafepoint force_safepoint_op;
1859 VMThread::execute(&force_safepoint_op);
1860 WB_END
1861
1862 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1863 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1864 return (jlong) ik->constants();
1865 WB_END
1866
1867 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1868 return ConstantPool::CPCACHE_INDEX_TAG;
1869 WB_END
1870
1871 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1872 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1873 ConstantPool* cp = ik->constants();
1874 if (cp->cache() == NULL) {
1875 return -1;
1876 }
1877 return cp->cache()->length();
1878 WB_END
1879
1880 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1881 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1882 ConstantPool* cp = ik->constants();
1883 if (cp->cache() == NULL) {
1884 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1885 }
1886 jint cpci = index;
1887 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1888 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1889 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1890 }
1891 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1892 return cpi;
1893 WB_END
1894
1895 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1896 return ConstantPool::encode_invokedynamic_index(index);
1897 WB_END
1898
1899 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1900 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1901 VMThread::execute(&clear_ics);
1902 WB_END
1903
1904 template <typename T>
1905 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1906 assert(value != NULL, "sanity");
1907 if (method == NULL || name == NULL) {
1908 return false;
1909 }
1910 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1911 CHECK_JNI_EXCEPTION_(env, false);
1912 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1913 // can't be in VM when we call JNI
1914 ThreadToNativeFromVM ttnfv(thread);
1915 const char* flag_name = env->GetStringUTFChars(name, NULL);
1916 CHECK_JNI_EXCEPTION_(env, false);
1917 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1918 env->ReleaseStringUTFChars(name, flag_name);
1919 return result;
1920 }
1921
1922 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1923 bool result;
1924 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1925 // can't be in VM when we call JNI
1926 ThreadToNativeFromVM ttnfv(thread);
1927 return booleanBox(thread, env, result);
1928 }
1929 return NULL;
1930 WB_END
1931
1932 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1933 intx result;
1934 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1935 // can't be in VM when we call JNI
1936 ThreadToNativeFromVM ttnfv(thread);
1937 return longBox(thread, env, result);
1938 }
1939 return NULL;
1940 WB_END
1941
1942 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1943 uintx result;
1944 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1945 // can't be in VM when we call JNI
1946 ThreadToNativeFromVM ttnfv(thread);
1947 return longBox(thread, env, result);
1948 }
1949 return NULL;
1950 WB_END
1951
1952 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1953 double result;
1954 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1955 // can't be in VM when we call JNI
1956 ThreadToNativeFromVM ttnfv(thread);
1957 return doubleBox(thread, env, result);
1958 }
1959 return NULL;
1960 WB_END
1961
1962 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1963 ccstr ccstrResult;
1964 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1965 // can't be in VM when we call JNI
1966 ThreadToNativeFromVM ttnfv(thread);
1967 jstring result = env->NewStringUTF(ccstrResult);
1968 CHECK_JNI_EXCEPTION_(env, NULL);
1969 return result;
1970 }
1971 return NULL;
1972 WB_END
1973
1974 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1975 const char* p = Arguments::get_default_shared_archive_path();
1976 ThreadToNativeFromVM ttn(thread);
1977 jstring path_string = env->NewStringUTF(p);
1978
1979 CHECK_JNI_EXCEPTION_(env, NULL);
1980
1981 return path_string;
1982 WB_END
1983
1984 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1985 return UseSharedSpaces;
1986 WB_END
1987
1988 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
1989 return FileMapInfo::memory_mapping_failed();
1990 WB_END
1991
1992 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1993 oop obj_oop = JNIHandles::resolve(obj);
1994 return HeapShared::is_archived_object(obj_oop);
1995 WB_END
1996
1997 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1998 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1999 WB_END
2000
2001 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
2002 return !HeapShared::closed_archive_heap_region_mapped();
2003 WB_END
2004
2005 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
2006 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2007 if (k->is_instance_klass()) {
2008 InstanceKlass *ik = InstanceKlass::cast(k);
2009 ConstantPool *cp = ik->constants();
2010 objArrayOop refs = cp->resolved_references();
2011 return (jobject)JNIHandles::make_local(THREAD, refs);
2012 } else {
2013 return NULL;
2014 }
2015 WB_END
2016
2017 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2018 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2019 if (!k->is_instance_klass()) {
2020 return;
2021 }
2022 InstanceKlass *ik = InstanceKlass::cast(k);
2023 ik->link_class(THREAD); // may throw verification error
2024 WB_END
2025
2026 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2027 return HeapShared::open_archive_heap_region_mapped();
2028 WB_END
2029
2030 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
2031 #if INCLUDE_CDS
2032 return true;
2033 #else
2034 return false;
2035 #endif // INCLUDE_CDS
2036 WB_END
2037
2038 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncludedInVmBuild(JNIEnv* env))
2039 #if COMPILER2_OR_JVMCI
2040 return true;
2041 #else
2042 return false;
2043 #endif
2044 WB_END
2045
2046 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
2047 return HeapShared::is_heap_object_archiving_allowed();
2048 WB_END
2049
2050
2051 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
2052 #if INCLUDE_JFR
2053 return true;
2054 #else
2055 return false;
2056 #endif // INCLUDE_JFR
2057 WB_END
2058
2059 #if INCLUDE_CDS
2060
2061 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
2062 ResourceMark rm;
2063 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2064 int result = CDSOffsets::find_offset(c_name);
2065 return (jint)result;
2066 WB_END
2067
2068 #endif // INCLUDE_CDS
2069
2070 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2071 class TraceSelfClosure : public HandshakeClosure {
2072 jint _num_threads_completed;
2073
2074 void do_thread(Thread* th) {
2075 assert(th->is_Java_thread(), "sanity");
2076 JavaThread* jt = (JavaThread*)th;
2077 ResourceMark rm;
2078
2079 jt->print_on(tty);
2080 jt->print_stack_on(tty);
2081 tty->cr();
2082 Atomic::inc(&_num_threads_completed);
2083 }
2084
2085 public:
2086 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2087
2088 jint num_threads_completed() const { return _num_threads_completed; }
2089 };
2090 TraceSelfClosure tsc(Thread::current());
2091
2092 if (all_threads) {
2093 Handshake::execute(&tsc);
2094 } else {
2095 oop thread_oop = JNIHandles::resolve(thread_handle);
2096 if (thread_oop != NULL) {
2097 JavaThread* target = java_lang_Thread::thread(thread_oop);
2098 Handshake::execute(&tsc, target);
2099 }
2100 }
2101 return tsc.num_threads_completed();
2102 WB_END
2103
2104 //Some convenience methods to deal with objects from java
2105 int WhiteBox::offset_for_field(const char* field_name, oop object,
2106 Symbol* signature_symbol) {
2107 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2108 Thread* THREAD = Thread::current();
2109
2110 //Get the class of our object
2111 Klass* arg_klass = object->klass();
2112 //Turn it into an instance-klass
2113 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2114
2115 //Create symbols to look for in the class
2116 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2117
2118 //To be filled in with an offset of the field we're looking for
2119 fieldDescriptor fd;
2120
2121 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2122 if (res == NULL) {
2123 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2124 name_symbol->as_C_string());
2125 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2126 }
2127
2128 //fetch the field at the offset we've found
2129 int dest_offset = fd.offset();
2130
2131 return dest_offset;
2132 }
2133
2134
2135 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2136 int offset = offset_for_field(field_name, object,
2137 vmSymbols::string_signature());
2138 oop string = object->obj_field(offset);
2139 if (string == NULL) {
2140 return NULL;
2141 }
2142 const char* ret = java_lang_String::as_utf8_string(string);
2143 return ret;
2144 }
2145
2146 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2147 int offset =
2148 offset_for_field(field_name, object, vmSymbols::bool_signature());
2149 bool ret = (object->bool_field(offset) == JNI_TRUE);
2150 return ret;
2151 }
2152
2153 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2154 ResourceMark rm;
2155 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2156
2157 // one by one registration natives for exception catching
2158 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2159 CHECK_JNI_EXCEPTION(env);
2160 for (int i = 0, n = method_count; i < n; ++i) {
2161 // Skip dummy entries
2162 if (method_array[i].fnPtr == NULL) continue;
2163 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2164 jthrowable throwable_obj = env->ExceptionOccurred();
2165 if (throwable_obj != NULL) {
2166 env->ExceptionClear();
2167 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2168 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2169 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2170 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
2171 method_array[i].name, method_array[i].signature);
2172 }
2173 } else {
2174 // Registration failed unexpectedly.
2175 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
2176 method_array[i].name, method_array[i].signature);
2177 env->UnregisterNatives(wbclass);
2178 break;
2179 }
2180 }
2181 }
2182 }
2183
2184 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2185 // can't be in VM when we call JNI
2186 ThreadToNativeFromVM ttnfv(thread);
2187 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2188 CHECK_JNI_EXCEPTION_(env, 0);
2189 int ret;
2190 {
2191 ThreadInVMfromNative ttvfn(thread); // back to VM
2192 ret = DirectivesParser::parse_string(dir, tty);
2193 }
2194 env->ReleaseStringUTFChars(compDirect, dir);
2195 // -1 for error parsing directive. Return 0 as number of directives added.
2196 if (ret == -1) {
2197 ret = 0;
2198 }
2199 return (jint) ret;
2200 WB_END
2201
2202 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2203 DirectivesStack::pop(count);
2204 WB_END
2205
2206 // Checks that the library libfile has the noexecstack bit set.
2207 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2208 jboolean ret = false;
2209 #ifdef LINUX
2210 // Can't be in VM when we call JNI.
2211 ThreadToNativeFromVM ttnfv(thread);
2212 const char* lf = env->GetStringUTFChars(libfile, NULL);
2213 CHECK_JNI_EXCEPTION_(env, 0);
2214 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2215 env->ReleaseStringUTFChars(libfile, lf);
2216 #endif
2217 return ret;
2218 WB_END
2219
2220 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2221 LINUX_ONLY(return OSContainer::is_containerized();)
2222 return false;
2223 WB_END
2224
2225 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2226 jobject o,
2227 jstring proc_cgroups,
2228 jstring proc_self_cgroup,
2229 jstring proc_self_mountinfo))
2230 jint ret = 0;
2231 #ifdef LINUX
2232 ThreadToNativeFromVM ttnfv(thread);
2233 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL);
2234 CHECK_JNI_EXCEPTION_(env, 0);
2235 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL);
2236 CHECK_JNI_EXCEPTION_(env, 0);
2237 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL);
2238 CHECK_JNI_EXCEPTION_(env, 0);
2239 u1 cg_type_flags = 0;
2240 // This sets cg_type_flags
2241 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2242 ret = (jint)cg_type_flags;
2243 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2244 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2245 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2246 #endif
2247 return ret;
2248 WB_END
2249
2250 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2251 os::print_os_info(tty);
2252 WB_END
2253
2254 // Elf decoder
2255 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2256 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2257 ElfFile::_do_not_cache_elf_section = true;
2258 #endif
2259 WB_END
2260
2261 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2262 return (jlong) ResolvedMethodTable::items_count();
2263 WB_END
2264
2265 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2266 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2267 WB_END
2268
2269 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o))
2270 jint result = 0;
2271 #if INCLUDE_AOT
2272 result = (jint) AOTLoader::heaps_count();
2273 #endif
2274 return result;
2275 WB_END
2276
2277 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2278 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2279 // Return size in bytes.
2280 return k->size() * wordSize;
2281 WB_END
2282
2283 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2284 // It explains how the thread's priority field is used for test state coordination.
2285 //
2286 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2287 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2288 jlong tid = java_lang_Thread::thread_id(target_oop);
2289 JavaThread* target = java_lang_Thread::thread(target_oop);
2290
2291 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2292 ThreadsListHandle tlh;
2293
2294 // Look up the target thread by tid to ensure it is present
2295 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2296 if (t == NULL) {
2297 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2298 }
2299
2300 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2301 // Allow target to terminate by boosting priority
2302 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2303
2304 // Now wait for the target to terminate
2305 while (!target->is_terminated()) {
2306 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2307 os::naked_short_sleep(0);
2308 }
2309
2310 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2311
2312 // Now release the GC inducing thread - we have to re-resolve the external oop that
2313 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2314 oop original = JNIHandles::resolve_non_null(target_handle);
2315 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2316
2317 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2318
2319 // The Java code should be creating garbage and triggering GC, which would potentially move
2320 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2321 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2322 // kick in.
2323 for (int i = 0; i < 5; i++) {
2324 oop original = JNIHandles::resolve_non_null(target_handle);
2325 oop current = t->threadObj();
2326 if (original != current) {
2327 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2328 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2329 } else {
2330 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2331 ThreadBlockInVM tbivm(thread);
2332 os::naked_short_sleep(50);
2333 }
2334 }
2335 WB_END
2336
2337 #define CC (char*)
2338
2339 static JNINativeMethod methods[] = {
2340 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2341 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2342 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2343 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2344 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2345 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2346 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2347 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2348 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2349 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2350 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2351 {CC"parseCommandLine0",
2352 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2353 (void*) &WB_ParseCommandLine
2354 },
2355 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2356 (void*)&WB_AddToBootstrapClassLoaderSearch},
2357 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2358 (void*)&WB_AddToSystemClassLoaderSearch},
2359 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2360 (void*)&WB_GetCompressedOopsMaxHeapSize},
2361 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2362 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2363 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2364 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2365 #if INCLUDE_CDS
2366 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2367 #endif
2368 #if INCLUDE_G1GC
2369 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2370 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2371 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2372 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2373 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2374 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2375 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2376 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2377 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2378 (void*)&WB_G1AuxiliaryMemoryUsage },
2379 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2380 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2381 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2382 #endif // INCLUDE_G1GC
2383 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
2384 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart },
2385 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd },
2386 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart },
2387 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd },
2388 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
2389 #if INCLUDE_PARALLELGC
2390 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2391 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2392 #endif
2393 #if INCLUDE_NMT
2394 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2395 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2396 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2397 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2398 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2399 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2400 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2401 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2402 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2403 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2404 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2405 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2406 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2407 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2408 #endif // INCLUDE_NMT
2409 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2410 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2411 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2412 (void*)&WB_DeoptimizeMethod },
2413 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2414 (void*)&WB_IsMethodCompiled },
2415 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2416 (void*)&WB_IsMethodCompilable},
2417 {CC"isMethodQueuedForCompilation0",
2418 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2419 {CC"isIntrinsicAvailable0",
2420 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2421 (void*)&WB_IsIntrinsicAvailable},
2422 {CC"makeMethodNotCompilable0",
2423 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2424 {CC"testSetDontInlineMethod0",
2425 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2426 {CC"getMethodCompilationLevel0",
2427 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2428 {CC"getMethodEntryBci0",
2429 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2430 {CC"getCompileQueueSize",
2431 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2432 {CC"testSetForceInlineMethod0",
2433 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2434 {CC"enqueueMethodForCompilation0",
2435 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2436 {CC"enqueueInitializerForCompilation0",
2437 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2438 {CC"markMethodProfiled",
2439 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2440 {CC"clearMethodState0",
2441 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2442 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2443 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2444 {CC"matchesMethod",
2445 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2446 (void*)&WB_MatchesMethod},
2447 {CC"matchesInline",
2448 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2449 (void*)&WB_MatchesInline},
2450 {CC"shouldPrintAssembly",
2451 CC"(Ljava/lang/reflect/Executable;I)Z",
2452 (void*)&WB_ShouldPrintAssembly},
2453
2454 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2455 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2456 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2457 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2458 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2459 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2460 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2461 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2462 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2463 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2464 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2465 (void*)&WB_SetStringVMFlag},
2466 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2467 (void*)&WB_GetBooleanVMFlag},
2468 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2469 (void*)&WB_GetIntVMFlag},
2470 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2471 (void*)&WB_GetUintVMFlag},
2472 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2473 (void*)&WB_GetIntxVMFlag},
2474 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2475 (void*)&WB_GetUintxVMFlag},
2476 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2477 (void*)&WB_GetUint64VMFlag},
2478 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2479 (void*)&WB_GetSizeTVMFlag},
2480 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2481 (void*)&WB_GetDoubleVMFlag},
2482 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2483 (void*)&WB_GetStringVMFlag},
2484 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2485 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2486 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2487 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2488 {CC"allocateMetaspace",
2489 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2490 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2491 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2492 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2493 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2494 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2495 (void*)&WB_GetNMethod },
2496 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2497 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2498 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2499 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2500 {CC"getCompilationActivityMode",
2501 CC"()I", (void*)&WB_GetCompilationActivityMode},
2502 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2503 (void*)&WB_GetMethodData },
2504 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2505 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2506 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2507 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2508 (void*)&WB_DefineModule },
2509 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2510 (void*)&WB_AddModuleExports },
2511 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2512 (void*)&WB_AddReadsModule },
2513 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2514 (void*)&WB_AddModuleExportsToAllUnnamed },
2515 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2516 (void*)&WB_AddModuleExportsToAll },
2517 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2518 {CC"assertSpecialLock", CC"(ZZ)V", (void*)&WB_AssertSpecialLock },
2519 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2520 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2521 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2522 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2523 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2524 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2525 {CC"remapInstructionOperandFromCPCache0",
2526 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2527 {CC"encodeConstantPoolIndyIndex0",
2528 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2529 {CC"getMethodBooleanOption",
2530 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2531 (void*)&WB_GetMethodBooleaneOption},
2532 {CC"getMethodIntxOption",
2533 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2534 (void*)&WB_GetMethodIntxOption},
2535 {CC"getMethodUintxOption",
2536 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2537 (void*)&WB_GetMethodUintxOption},
2538 {CC"getMethodDoubleOption",
2539 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2540 (void*)&WB_GetMethodDoubleOption},
2541 {CC"getMethodStringOption",
2542 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2543 (void*)&WB_GetMethodStringOption},
2544 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2545 (void*)&WB_GetDefaultArchivePath},
2546 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2547 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2548 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2549 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2550 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2551 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2552 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2553 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2554 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2555 {CC"isC2OrJVMCIIncludedInVmBuild", CC"()Z", (void*)&WB_isC2OrJVMCIIncludedInVmBuild },
2556 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2557 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2558
2559 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2560 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2561 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2562 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2563 (void*)&WB_AddCompilerDirective },
2564 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2565 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2566 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2567 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2568 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2569 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2570 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2571 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2572 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2573 (void*)&WB_ConcurrentGCRunTo},
2574 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2575 (void*)&WB_CheckLibSpecifiesNoexecstack},
2576 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2577 {CC"validateCgroup",
2578 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2579 (void*)&WB_ValidateCgroup },
2580 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2581 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2582 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2583 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2584 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount },
2585 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2586
2587 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2588 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2589 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2590 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2591 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2592 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2593 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2594 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2595 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2596 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2597 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2598
2599 };
2600
2601
2602 #undef CC
2603
2604 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2605 {
2606 if (WhiteBoxAPI) {
2607 // Make sure that wbclass is loaded by the null classloader
2608 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2609 Handle loader(THREAD, ik->class_loader());
2610 if (loader.is_null()) {
2611 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2612 WhiteBox::set_used();
2613 }
2614 }
2615 }
2616 JVM_END