1 /*
2 * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/classLoaderDataGraph.hpp"
30 #include "classfile/modules.hpp"
31 #include "classfile/protectionDomainCache.hpp"
32 #include "classfile/stringTable.hpp"
33 #include "classfile/symbolTable.hpp"
34 #include "code/codeCache.hpp"
35 #include "compiler/methodMatcher.hpp"
36 #include "compiler/directivesParser.hpp"
37 #include "gc/shared/gcConfig.hpp"
38 #include "gc/shared/genArguments.hpp"
39 #include "gc/shared/genCollectedHeap.hpp"
40 #include "jvmtifiles/jvmtiEnv.hpp"
41 #include "memory/filemap.hpp"
42 #include "memory/heapShared.inline.hpp"
43 #include "memory/metaspaceShared.hpp"
44 #include "memory/metadataFactory.hpp"
45 #include "memory/iterator.hpp"
46 #include "memory/resourceArea.hpp"
47 #include "memory/universe.hpp"
48 #include "memory/oopFactory.hpp"
49 #include "oops/array.hpp"
50 #include "oops/compressedOops.hpp"
51 #include "oops/constantPool.inline.hpp"
52 #include "oops/method.inline.hpp"
53 #include "oops/objArrayKlass.hpp"
54 #include "oops/objArrayOop.inline.hpp"
55 #include "oops/oop.inline.hpp"
56 #include "oops/typeArrayOop.inline.hpp"
57 #include "prims/resolvedMethodTable.hpp"
58 #include "prims/wbtestmethods/parserTests.hpp"
59 #include "prims/whitebox.inline.hpp"
60 #include "runtime/arguments.hpp"
61 #include "runtime/compilationPolicy.hpp"
62 #include "runtime/deoptimization.hpp"
63 #include "runtime/fieldDescriptor.inline.hpp"
64 #include "runtime/flags/jvmFlag.hpp"
65 #include "runtime/frame.inline.hpp"
66 #include "runtime/handles.inline.hpp"
67 #include "runtime/handshake.hpp"
68 #include "runtime/interfaceSupport.inline.hpp"
69 #include "runtime/javaCalls.hpp"
70 #include "runtime/jniHandles.inline.hpp"
71 #include "runtime/os.hpp"
72 #include "runtime/sweeper.hpp"
73 #include "runtime/synchronizer.hpp"
74 #include "runtime/thread.hpp"
75 #include "runtime/threadSMR.hpp"
76 #include "runtime/vm_version.hpp"
77 #include "services/memoryService.hpp"
78 #include "utilities/align.hpp"
79 #include "utilities/debug.hpp"
80 #include "utilities/elfFile.hpp"
81 #include "utilities/exceptions.hpp"
82 #include "utilities/macros.hpp"
83 #if INCLUDE_CDS
84 #include "prims/cdsoffsets.hpp"
85 #endif // INCLUDE_CDS
86 #if INCLUDE_G1GC
87 #include "gc/g1/g1Arguments.hpp"
88 #include "gc/g1/g1CollectedHeap.inline.hpp"
89 #include "gc/g1/g1ConcurrentMark.hpp"
90 #include "gc/g1/g1ConcurrentMarkThread.hpp"
91 #include "gc/g1/heapRegionRemSet.hpp"
92 #include "gc/g1/heterogeneousHeapRegionManager.hpp"
93 #endif // INCLUDE_G1GC
94 #if INCLUDE_PARALLELGC
95 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
96 #include "gc/parallel/adjoiningGenerations.hpp"
97 #endif // INCLUDE_PARALLELGC
98 #if INCLUDE_NMT
99 #include "services/mallocSiteTable.hpp"
100 #include "services/memTracker.hpp"
101 #include "utilities/nativeCallStack.hpp"
102 #endif // INCLUDE_NMT
103 #if INCLUDE_AOT
104 #include "aot/aotLoader.hpp"
105 #endif // INCLUDE_AOT
106
107 #ifdef LINUX
108 #include "osContainer_linux.hpp"
109 #endif
110
111 #define SIZE_T_MAX_VALUE ((size_t) -1)
112
113 #define CHECK_JNI_EXCEPTION_(env, value) \
114 do { \
115 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
116 THREAD->clear_pending_jni_exception_check(); \
117 if (HAS_PENDING_EXCEPTION) { \
118 return(value); \
119 } \
120 } while (0)
121
122 #define CHECK_JNI_EXCEPTION(env) \
123 do { \
124 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
125 THREAD->clear_pending_jni_exception_check(); \
126 if (HAS_PENDING_EXCEPTION) { \
127 return; \
128 } \
129 } while (0)
130
131 bool WhiteBox::_used = false;
132 volatile bool WhiteBox::compilation_locked = false;
133
134 class VM_WhiteBoxOperation : public VM_Operation {
135 public:
136 VM_WhiteBoxOperation() { }
137 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
138 bool allow_nested_vm_operations() const { return true; }
139 };
140
141
142 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
143 return (jlong)(void*)JNIHandles::resolve(obj);
144 WB_END
145
146 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
147 return heapOopSize;
148 WB_END
149
150 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
151 return os::vm_page_size();
152 WB_END
153
154 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
155 return os::vm_allocation_granularity();
156 WB_END
157
158 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
159 return os::large_page_size();
160 WB_END
161
162 class WBIsKlassAliveClosure : public LockedClassesDo {
163 Symbol* _name;
164 bool _found;
165 public:
166 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
167
168 void do_klass(Klass* k) {
169 if (_found) return;
170 Symbol* ksym = k->name();
171 if (ksym->fast_compare(_name) == 0) {
172 _found = true;
173 }
174 }
175
176 bool found() const {
177 return _found;
178 }
179 };
180
181 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
182 oop h_name = JNIHandles::resolve(name);
183 if (h_name == NULL) return false;
184 Symbol* sym = java_lang_String::as_symbol(h_name);
185 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
186
187 WBIsKlassAliveClosure closure(sym);
188 ClassLoaderDataGraph::classes_do(&closure);
189
190 return closure.found();
191 WB_END
192
193 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
194 oop h_name = JNIHandles::resolve(name);
195 if (h_name == NULL) return false;
196 Symbol* sym = java_lang_String::as_symbol(h_name);
197 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
198 return (jint)sym->refcount();
199 WB_END
200
201
202 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
203 #if INCLUDE_JVMTI
204 ResourceMark rm;
205 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
206 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
207 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
208 assert(err == JVMTI_ERROR_NONE, "must not fail");
209 #endif
210 }
211 WB_END
212
213 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
214 #if INCLUDE_JVMTI
215 ResourceMark rm;
216 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
217 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
218 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
219 assert(err == JVMTI_ERROR_NONE, "must not fail");
220 #endif
221 }
222 WB_END
223
224
225 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
226 return (jlong)Arguments::max_heap_for_compressed_oops();
227 }
228 WB_END
229
230 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
231 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
232 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
233 MinHeapSize,
234 InitialHeapSize,
235 MaxHeapSize,
236 SpaceAlignment,
237 HeapAlignment);
238 }
239 WB_END
240
241 #ifndef PRODUCT
242 // Forward declaration
243 void TestReservedSpace_test();
244 void TestReserveMemorySpecial_test();
245 void TestVirtualSpace_test();
246 #endif
247
248 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
249 #ifndef PRODUCT
250 TestReservedSpace_test();
251 TestReserveMemorySpecial_test();
252 TestVirtualSpace_test();
253 #endif
254 WB_END
255
256 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
257 size_t granularity = os::vm_allocation_granularity();
258 ReservedHeapSpace rhs(100 * granularity, granularity, false);
259 VirtualSpace vs;
260 vs.initialize(rhs, 50 * granularity);
261
262 // Check if constraints are complied
263 if (!( UseCompressedOops && rhs.base() != NULL &&
264 CompressedOops::base() != NULL &&
265 CompressedOops::use_implicit_null_checks() )) {
266 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
267 "\tUseCompressedOops is %d\n"
268 "\trhs.base() is " PTR_FORMAT "\n"
269 "\tCompressedOops::base() is " PTR_FORMAT "\n"
270 "\tCompressedOops::use_implicit_null_checks() is %d",
271 UseCompressedOops,
272 p2i(rhs.base()),
273 p2i(CompressedOops::base()),
274 CompressedOops::use_implicit_null_checks());
275 return;
276 }
277 tty->print_cr("Reading from no access area... ");
278 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
279 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
280 WB_END
281
282 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
283 size_t magnitude, size_t iterations) {
284 size_t granularity = os::vm_allocation_granularity();
285 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
286 VirtualSpace vs;
287 if (!vs.initialize(rhs, 0)) {
288 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
289 return 3;
290 }
291
292 int seed = os::random();
293 tty->print_cr("Random seed is %d", seed);
294 os::init_random(seed);
295
296 for (size_t i = 0; i < iterations; i++) {
297
298 // Whether we will shrink or grow
299 bool shrink = os::random() % 2L == 0;
300
301 // Get random delta to resize virtual space
302 size_t delta = (size_t)os::random() % magnitude;
303
304 // If we are about to shrink virtual space below zero, then expand instead
305 if (shrink && vs.committed_size() < delta) {
306 shrink = false;
307 }
308
309 // Resizing by delta
310 if (shrink) {
311 vs.shrink_by(delta);
312 } else {
313 // If expanding fails expand_by will silently return false
314 vs.expand_by(delta, true);
315 }
316 }
317 return 0;
318 }
319
320 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
321 jlong reserved_space_size, jlong magnitude, jlong iterations))
322 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
323 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
324 iterations);
325 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
326 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
327 return 1;
328 }
329
330 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
331 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
332 if (sizeof(size_t) < sizeof(jlong)) {
333 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
334 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
335 || iterations > size_t_max_value) {
336 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
337 return 2;
338 }
339 }
340
341 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
342 (size_t) magnitude, (size_t) iterations);
343 WB_END
344
345 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
346 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
347 WB_END
348
349 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
350 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
351 WB_END
352
353 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
354 return GCConfig::is_gc_selected_ergonomically();
355 WB_END
356
357 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
358 oop p = JNIHandles::resolve(obj);
359 #if INCLUDE_G1GC
360 if (UseG1GC) {
361 G1CollectedHeap* g1h = G1CollectedHeap::heap();
362 const HeapRegion* hr = g1h->heap_region_containing(p);
363 if (hr == NULL) {
364 return false;
365 }
366 return !(hr->is_young());
367 }
368 #endif
369 #if INCLUDE_PARALLELGC
370 if (UseParallelGC) {
371 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
372 return !psh->is_in_young(p);
373 }
374 #endif
375 #if INCLUDE_ZGC
376 if (UseZGC) {
377 return Universe::heap()->is_in(p);
378 }
379 #endif
380 GenCollectedHeap* gch = GenCollectedHeap::heap();
381 return !gch->is_in_young(p);
382 WB_END
383
384 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
385 oop p = JNIHandles::resolve(obj);
386 return Universe::heap()->obj_size(p) * HeapWordSize;
387 WB_END
388
389 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
390 return (jlong)SpaceAlignment;
391 WB_END
392
393 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
394 return (jlong)HeapAlignment;
395 WB_END
396
397 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
398 return Universe::heap()->supports_concurrent_phase_control();
399 WB_END
400
401 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
402 Handle h_name(THREAD, JNIHandles::resolve(name));
403 ResourceMark rm;
404 const char* c_name = java_lang_String::as_utf8_string(h_name());
405 return Universe::heap()->request_concurrent_phase(c_name);
406 WB_END
407
408 #if INCLUDE_G1GC
409
410 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
411 if (UseG1GC) {
412 G1CollectedHeap* g1h = G1CollectedHeap::heap();
413 oop result = JNIHandles::resolve(obj);
414 const HeapRegion* hr = g1h->heap_region_containing(result);
415 return hr->is_humongous();
416 }
417 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
418 WB_END
419
420 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
421 if (UseG1GC) {
422 G1CollectedHeap* g1h = G1CollectedHeap::heap();
423 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
424 return hr->is_humongous();
425 }
426 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
427 WB_END
428
429 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
430 if (UseG1GC) {
431 G1CollectedHeap* g1h = G1CollectedHeap::heap();
432 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
433 return hr->is_free();
434 }
435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
436 WB_END
437
438 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
439 if (UseG1GC) {
440 G1CollectedHeap* g1h = G1CollectedHeap::heap();
441 size_t nr = g1h->max_regions();
442 return (jlong)nr;
443 }
444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
445 WB_END
446
447 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
448 if (UseG1GC) {
449 G1CollectedHeap* g1h = G1CollectedHeap::heap();
450 size_t nr = g1h->num_free_regions();
451 return (jlong)nr;
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1h = G1CollectedHeap::heap();
459 return g1h->concurrent_mark()->cm_thread()->during_cycle();
460 }
461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
462 WB_END
463
464 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
465 if (UseG1GC) {
466 if (AsyncDeflateIdleMonitors) {
467 // AsyncDeflateIdleMonitors needs to know when System.gc() or
468 // the equivalent is called so any special clean up can be done
469 // at a safepoint, e.g., TestHumongousClassLoader.java.
470 ObjectSynchronizer::set_is_special_deflation_requested(true);
471 }
472 G1CollectedHeap* g1h = G1CollectedHeap::heap();
473 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
474 g1h->collect(GCCause::_wb_conc_mark);
475 return true;
476 }
477 return false;
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
483 if (UseG1GC) {
484 return (jint)HeapRegion::GrainBytes;
485 }
486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
487 WB_END
488
489 #endif // INCLUDE_G1GC
490
491 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
492 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o))
493 #if INCLUDE_G1GC
494 if (UseG1GC) {
495 G1CollectedHeap* g1h = G1CollectedHeap::heap();
496 if (g1h->is_heterogeneous_heap()) {
497 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram();
498 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
499 } else {
500 return (jlong)g1h->base();
501 }
502 }
503 #endif // INCLUDE_G1GC
504 #if INCLUDE_PARALLELGC
505 if (UseParallelGC) {
506 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
507 if (AllocateOldGenAt != NULL) {
508 MemRegion reserved = ps_heap->young_gen()->reserved();
509 return (jlong)reserved.start();
510 } else {
511 return (jlong)ps_heap->base();
512 }
513 }
514 #endif // INCLUDE_PARALLELGC
515 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC");
516 WB_END
517
518 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o))
519 #if INCLUDE_G1GC
520 if (UseG1GC) {
521 G1CollectedHeap* g1h = G1CollectedHeap::heap();
522 if (g1h->is_heterogeneous_heap()) {
523 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram();
524 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
525 } else {
526 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes();
527 }
528 }
529 #endif // INCLUDE_G1GC
530 #if INCLUDE_PARALLELGC
531 if (UseParallelGC) {
532 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
533 if (AllocateOldGenAt != NULL) {
534 MemRegion reserved = ps_heap->young_gen()->reserved();
535 return (jlong)reserved.end();
536 } else {
537 return (jlong)ps_heap->reserved_region().end();
538 }
539 }
540 #endif // INCLUDE_PARALLELGC
541 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC");
542 WB_END
543
544 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o))
545 #if INCLUDE_G1GC
546 if (UseG1GC) {
547 G1CollectedHeap* g1h = G1CollectedHeap::heap();
548 if (g1h->is_heterogeneous_heap()) {
549 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
550 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
551 } else {
552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
553 }
554 }
555 #endif // INCLUDE_G1GC
556 #if INCLUDE_PARALLELGC
557 if (UseParallelGC) {
558 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
559 if (AllocateOldGenAt != NULL) {
560 MemRegion reserved = ps_heap->old_gen()->reserved();
561 return (jlong)reserved.start();
562 } else {
563 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
564 }
565 }
566 #endif // INCLUDE_PARALLELGC
567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC");
568 WB_END
569
570 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o))
571 #if INCLUDE_G1GC
572 if (UseG1GC) {
573 G1CollectedHeap* g1h = G1CollectedHeap::heap();
574 if (g1h->is_heterogeneous_heap()) {
575 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
576 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
577 } else {
578 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
579 }
580 }
581 #endif // INCLUDE_G1GC
582 #if INCLUDE_PARALLELGC
583 if (UseParallelGC) {
584 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
585 if (AllocateOldGenAt != NULL) {
586 MemRegion reserved = ps_heap->old_gen()->reserved();
587 return (jlong)reserved.end();
588 } else {
589 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
590 }
591 }
592 #endif // INCLUDE_PARALLELGC
593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC");
594 WB_END
595
596 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
597
598 #if INCLUDE_PARALLELGC
599
600 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
601 if (UseParallelGC) {
602 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
603 }
604 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
605 WB_END
606
607 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
608 if (UseParallelGC) {
609 return GenAlignment;
610 }
611 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
612 WB_END
613
614 #endif // INCLUDE_PARALLELGC
615
616 #if INCLUDE_G1GC
617
618 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
619 if (UseG1GC) {
620 ResourceMark rm(THREAD);
621 G1CollectedHeap* g1h = G1CollectedHeap::heap();
622 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
623 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
624 return JNIHandles::make_local(env, h());
625 }
626 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
627 WB_END
628
629 class OldRegionsLivenessClosure: public HeapRegionClosure {
630
631 private:
632 const int _liveness;
633 size_t _total_count;
634 size_t _total_memory;
635 size_t _total_memory_to_free;
636
637 public:
638 OldRegionsLivenessClosure(int liveness) :
639 _liveness(liveness),
640 _total_count(0),
641 _total_memory(0),
642 _total_memory_to_free(0) { }
643
644 size_t total_count() { return _total_count; }
645 size_t total_memory() { return _total_memory; }
646 size_t total_memory_to_free() { return _total_memory_to_free; }
647
648 bool do_heap_region(HeapRegion* r) {
649 if (r->is_old()) {
650 size_t prev_live = r->marked_bytes();
651 size_t live = r->live_bytes();
652 size_t size = r->used();
653 size_t reg_size = HeapRegion::GrainBytes;
654 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
655 _total_memory += size;
656 ++_total_count;
657 if (size == reg_size) {
658 // we don't include non-full regions since they are unlikely included in mixed gc
659 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
660 _total_memory_to_free += size - prev_live;
661 }
662 }
663 }
664 return false;
665 }
666 };
667
668
669 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
670 if (!UseG1GC) {
671 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
672 }
673 if (liveness < 0) {
674 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
675 }
676
677 G1CollectedHeap* g1h = G1CollectedHeap::heap();
678 OldRegionsLivenessClosure rli(liveness);
679 g1h->heap_region_iterate(&rli);
680
681 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
682 result->long_at_put(0, rli.total_count());
683 result->long_at_put(1, rli.total_memory());
684 result->long_at_put(2, rli.total_memory_to_free());
685 return (jlongArray) JNIHandles::make_local(env, result);
686 WB_END
687
688 #endif // INCLUDE_G1GC
689
690 #if INCLUDE_NMT
691 // Alloc memory using the test memory type so that we can use that to see if
692 // NMT picks it up correctly
693 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
694 jlong addr = 0;
695 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
696 return addr;
697 WB_END
698
699 // Alloc memory with pseudo call stack. The test can create psudo malloc
700 // allocation site to stress the malloc tracking.
701 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
702 address pc = (address)(size_t)pseudo_stack;
703 NativeCallStack stack(&pc, 1);
704 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
705 WB_END
706
707 // Alloc memory with pseudo call stack and specific memory type.
708 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
709 address pc = (address)(size_t)pseudo_stack;
710 NativeCallStack stack(&pc, 1);
711 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
712 WB_END
713
714 // Free the memory allocated by NMTAllocTest
715 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
716 os::free((void*)(uintptr_t)mem);
717 WB_END
718
719 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
720 jlong addr = 0;
721
722 addr = (jlong)(uintptr_t)os::reserve_memory(size);
723 MemTracker::record_virtual_memory_type((address)addr, mtTest);
724
725 return addr;
726 WB_END
727
728 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
729 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
730 MemTracker::record_virtual_memory_type((address)addr, mtTest);
731
732 return addr;
733 WB_END
734
735 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
736 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
737 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
738 WB_END
739
740 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
741 os::uncommit_memory((char *)(uintptr_t)addr, size);
742 WB_END
743
744 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
745 os::release_memory((char *)(uintptr_t)addr, size);
746 WB_END
747
748 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
749 // Test that we can downgrade NMT levels but not upgrade them.
750 if (MemTracker::tracking_level() == NMT_off) {
751 MemTracker::transition_to(NMT_off);
752 return MemTracker::tracking_level() == NMT_off;
753 } else {
754 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
755 MemTracker::transition_to(NMT_summary);
756 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
757
758 // Can't go to detail once NMT is set to summary.
759 MemTracker::transition_to(NMT_detail);
760 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
761
762 // Shutdown sets tracking level to minimal.
763 MemTracker::shutdown();
764 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
765
766 // Once the tracking level is minimal, we cannot increase to summary.
767 // The code ignores this request instead of asserting because if the malloc site
768 // table overflows in another thread, it tries to change the code to summary.
769 MemTracker::transition_to(NMT_summary);
770 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
771
772 // Really can never go up to detail, verify that the code would never do this.
773 MemTracker::transition_to(NMT_detail);
774 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
775 return MemTracker::tracking_level() == NMT_minimal;
776 }
777 WB_END
778
779 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
780 int hash_size = MallocSiteTable::hash_buckets();
781 assert(hash_size > 0, "NMT hash_size should be > 0");
782 return (jint)hash_size;
783 WB_END
784 #endif // INCLUDE_NMT
785
786 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
787 assert(method != NULL, "method should not be null");
788 ThreadToNativeFromVM ttn(thread);
789 return env->FromReflectedMethod(method);
790 }
791
792 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
793 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
794 private:
795 int _result;
796 const bool _make_not_entrant;
797 public:
798 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
799 _result(0), _make_not_entrant(make_not_entrant) { }
800 int result() const { return _result; }
801
802 void doit() {
803 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
804 if (t->has_last_Java_frame()) {
805 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
806 frame* f = fst.current();
807 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
808 RegisterMap* reg_map = fst.register_map();
809 Deoptimization::deoptimize(t, *f, reg_map);
810 if (_make_not_entrant) {
811 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
812 assert(cm != NULL, "sanity check");
813 cm->make_not_entrant();
814 }
815 ++_result;
816 }
817 }
818 }
819 }
820 }
821 };
822
823 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
824 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
825 VMThread::execute(&op);
826 return op.result();
827 WB_END
828
829 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
830 MutexLocker mu(Compile_lock);
831 CodeCache::mark_all_nmethods_for_deoptimization();
832 VM_Deoptimize op;
833 VMThread::execute(&op);
834 WB_END
835
836 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
837 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
838 int result = 0;
839 CHECK_JNI_EXCEPTION_(env, result);
840 MutexLocker mu(Compile_lock);
841 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
842 if (is_osr) {
843 result += mh->mark_osr_nmethods();
844 } else if (mh->code() != NULL) {
845 mh->code()->mark_for_deoptimization();
846 ++result;
847 }
848 result += CodeCache::mark_for_deoptimization(mh());
849 if (result > 0) {
850 VM_Deoptimize op;
851 VMThread::execute(&op);
852 }
853 return result;
854 WB_END
855
856 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
857 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
858 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
859 MutexLocker mu(Compile_lock);
860 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
861 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
862 if (code == NULL) {
863 return JNI_FALSE;
864 }
865 return (code->is_alive() && !code->is_marked_for_deoptimization());
866 WB_END
867
868 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
869 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
870 return false;
871 }
872 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
873 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
874 MutexLocker mu(Compile_lock);
875 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
876 if (is_osr) {
877 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
878 } else {
879 return CompilationPolicy::can_be_compiled(mh, comp_level);
880 }
881 WB_END
882
883 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
884 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
885 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
886 MutexLocker mu(Compile_lock);
887 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
888 return mh->queued_for_compilation();
889 WB_END
890
891 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
892 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
893 return false; // Intrinsic is not available on a non-existent compilation level.
894 }
895 jmethodID method_id, compilation_context_id;
896 method_id = reflected_method_to_jmid(thread, env, method);
897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
898 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
899
900 DirectiveSet* directive;
901 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
902 assert(comp != NULL, "compiler not available");
903 if (compilation_context != NULL) {
904 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
905 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
906 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
907 directive = DirectivesStack::getMatchingDirective(cch, comp);
908 } else {
909 // Calling with NULL matches default directive
910 directive = DirectivesStack::getDefaultDirective(comp);
911 }
912 bool result = comp->is_intrinsic_available(mh, directive);
913 DirectivesStack::release(directive);
914 return result;
915 WB_END
916
917 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
918 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
919 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
920 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
921 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
922 return (code != NULL ? code->comp_level() : CompLevel_none);
923 WB_END
924
925 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
926 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
927 CHECK_JNI_EXCEPTION(env);
928 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
929 if (is_osr) {
930 mh->set_not_osr_compilable("WhiteBox", comp_level);
931 } else {
932 mh->set_not_compilable("WhiteBox", comp_level);
933 }
934 WB_END
935
936 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
937 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
938 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
939 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
940 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
941 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
942 WB_END
943
944 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
945 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
946 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
947 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
948 bool result = mh->dont_inline();
949 mh->set_dont_inline(value == JNI_TRUE);
950 return result;
951 WB_END
952
953 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
954 if (comp_level == CompLevel_any) {
955 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
956 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
957 } else {
958 return CompileBroker::queue_size(comp_level);
959 }
960 WB_END
961
962 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
963 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
964 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
965 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
966 bool result = mh->force_inline();
967 mh->set_force_inline(value == JNI_TRUE);
968 return result;
969 WB_END
970
971 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
972 // Screen for unavailable/bad comp level or null method
973 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
974 if (method == NULL) {
975 tty->print_cr("WB error: request to compile NULL method");
976 return false;
977 }
978 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
979 tty->print_cr("WB error: invalid compilation level %d", comp_level);
980 return false;
981 }
982 if (comp == NULL) {
983 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
984 return false;
985 }
986
987 // Check if compilation is blocking
988 methodHandle mh(THREAD, method);
989 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
990 bool is_blocking = !directive->BackgroundCompilationOption;
991 DirectivesStack::release(directive);
992
993 // Compile method and check result
994 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
995 MutexLocker mu(Compile_lock);
996 bool is_queued = mh->queued_for_compilation();
997 if ((!is_blocking && is_queued) || nm != NULL) {
998 return true;
999 }
1000 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1001 mh->print_short_name(tty);
1002 tty->cr();
1003 if (is_blocking && is_queued) {
1004 tty->print_cr("WB error: blocking compilation is still in queue!");
1005 }
1006 return false;
1007 }
1008
1009 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1010 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1011 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1012 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1013 WB_END
1014
1015 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1016 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1017 Method* clinit = ik->class_initializer();
1018 if (clinit == NULL) {
1019 return false;
1020 }
1021 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1022 WB_END
1023
1024 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1025 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1026 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1027
1028 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1029 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1030 bool result = directive->PrintAssemblyOption;
1031 DirectivesStack::release(directive);
1032
1033 return result;
1034 WB_END
1035
1036 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1037 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1038 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1039
1040 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1041
1042 ResourceMark rm;
1043 const char* error_msg = NULL;
1044 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1045 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1046
1047 if (m == NULL) {
1048 assert(error_msg != NULL, "Always have an error message");
1049 tty->print_cr("Got error: %s", error_msg);
1050 return -1; // Pattern failed
1051 }
1052
1053 // Pattern works - now check if it matches
1054 int result;
1055 if (m->match(mh, InlineMatcher::force_inline)) {
1056 result = 2; // Force inline match
1057 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1058 result = 1; // Dont inline match
1059 } else {
1060 result = 0; // No match
1061 }
1062 delete m;
1063 return result;
1064 WB_END
1065
1066 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1067 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1068 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1069
1070 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1071
1072 ResourceMark rm;
1073 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1074
1075 const char* error_msg = NULL;
1076
1077 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
1078 if (m == NULL) {
1079 assert(error_msg != NULL, "Must have error_msg");
1080 tty->print_cr("Got error: %s", error_msg);
1081 return -1;
1082 }
1083
1084 // Pattern works - now check if it matches
1085 int result = m->matches(mh);
1086 delete m;
1087 assert(result == 0 || result == 1, "Result out of range");
1088 return result;
1089 WB_END
1090
1091 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1092 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1093 CHECK_JNI_EXCEPTION(env);
1094 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1095
1096 MethodData* mdo = mh->method_data();
1097 if (mdo == NULL) {
1098 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1099 mdo = mh->method_data();
1100 }
1101 mdo->init();
1102 InvocationCounter* icnt = mdo->invocation_counter();
1103 InvocationCounter* bcnt = mdo->backedge_counter();
1104 // set i-counter according to TieredThresholdPolicy::is_method_profiled
1105 icnt->set(InvocationCounter::wait_for_compile, Tier4MinInvocationThreshold);
1106 bcnt->set(InvocationCounter::wait_for_compile, Tier4CompileThreshold);
1107 WB_END
1108
1109 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1110 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1111 CHECK_JNI_EXCEPTION(env);
1112 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1113 MutexLocker mu(Compile_lock);
1114 MethodData* mdo = mh->method_data();
1115 MethodCounters* mcs = mh->method_counters();
1116
1117 if (mdo != NULL) {
1118 mdo->init();
1119 ResourceMark rm;
1120 int arg_count = mdo->method()->size_of_parameters();
1121 for (int i = 0; i < arg_count; i++) {
1122 mdo->set_arg_modified(i, 0);
1123 }
1124 MutexLocker mu(mdo->extra_data_lock());
1125 mdo->clean_method_data(/*always_clean*/true);
1126 }
1127
1128 mh->clear_not_c1_compilable();
1129 mh->clear_not_c2_compilable();
1130 mh->clear_not_c2_osr_compilable();
1131 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1132 if (mcs != NULL) {
1133 mcs->backedge_counter()->init();
1134 mcs->invocation_counter()->init();
1135 mcs->set_interpreter_invocation_count(0);
1136 mcs->set_interpreter_throwout_count(0);
1137
1138 #ifdef TIERED
1139 mcs->set_rate(0.0F);
1140 mh->set_prev_event_count(0);
1141 mh->set_prev_time(0);
1142 #endif
1143 }
1144 WB_END
1145
1146 template <typename T>
1147 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1148 if (name == NULL) {
1149 return false;
1150 }
1151 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1152 const char* flag_name = env->GetStringUTFChars(name, NULL);
1153 CHECK_JNI_EXCEPTION_(env, false);
1154 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1155 env->ReleaseStringUTFChars(name, flag_name);
1156 return (result == JVMFlag::SUCCESS);
1157 }
1158
1159 template <typename T>
1160 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1161 if (name == NULL) {
1162 return false;
1163 }
1164 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1165 const char* flag_name = env->GetStringUTFChars(name, NULL);
1166 CHECK_JNI_EXCEPTION_(env, false);
1167 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1168 env->ReleaseStringUTFChars(name, flag_name);
1169 return (result == JVMFlag::SUCCESS);
1170 }
1171
1172 template <typename T>
1173 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1174 ResourceMark rm(thread);
1175 jclass clazz = env->FindClass(name->as_C_string());
1176 CHECK_JNI_EXCEPTION_(env, NULL);
1177 jmethodID methodID = env->GetStaticMethodID(clazz,
1178 vmSymbols::valueOf_name()->as_C_string(),
1179 sig->as_C_string());
1180 CHECK_JNI_EXCEPTION_(env, NULL);
1181 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1182 CHECK_JNI_EXCEPTION_(env, NULL);
1183 return result;
1184 }
1185
1186 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1187 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1188 }
1189 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1190 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1191 }
1192 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1193 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1194 }
1195 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1196 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1197 }*/
1198 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1199 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1200 }
1201
1202 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1203 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1204 const char* flag_name = env->GetStringUTFChars(name, NULL);
1205 CHECK_JNI_EXCEPTION_(env, NULL);
1206 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1207 env->ReleaseStringUTFChars(name, flag_name);
1208 return result;
1209 }
1210
1211 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1212 JVMFlag* flag = getVMFlag(thread, env, name);
1213 return (flag != NULL) && flag->is_constant_in_binary();
1214 WB_END
1215
1216 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1217 JVMFlag* flag = getVMFlag(thread, env, name);
1218 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1219 WB_END
1220
1221 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1222 bool result;
1223 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1224 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1225 return booleanBox(thread, env, result);
1226 }
1227 return NULL;
1228 WB_END
1229
1230 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1231 int result;
1232 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1233 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1234 return longBox(thread, env, result);
1235 }
1236 return NULL;
1237 WB_END
1238
1239 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1240 uint result;
1241 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1242 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1243 return longBox(thread, env, result);
1244 }
1245 return NULL;
1246 WB_END
1247
1248 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1249 intx result;
1250 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1251 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1252 return longBox(thread, env, result);
1253 }
1254 return NULL;
1255 WB_END
1256
1257 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1258 uintx result;
1259 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1260 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1261 return longBox(thread, env, result);
1262 }
1263 return NULL;
1264 WB_END
1265
1266 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1267 uint64_t result;
1268 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1269 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1270 return longBox(thread, env, result);
1271 }
1272 return NULL;
1273 WB_END
1274
1275 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1276 size_t result;
1277 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1278 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1279 return longBox(thread, env, result);
1280 }
1281 return NULL;
1282 WB_END
1283
1284 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1285 double result;
1286 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1287 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1288 return doubleBox(thread, env, result);
1289 }
1290 return NULL;
1291 WB_END
1292
1293 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1294 ccstr ccstrResult;
1295 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1296 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1297 jstring result = env->NewStringUTF(ccstrResult);
1298 CHECK_JNI_EXCEPTION_(env, NULL);
1299 return result;
1300 }
1301 return NULL;
1302 WB_END
1303
1304 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1305 bool result = value == JNI_TRUE ? true : false;
1306 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1307 WB_END
1308
1309 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1310 int result = value;
1311 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1312 WB_END
1313
1314 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1315 uint result = value;
1316 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1317 WB_END
1318
1319 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1320 intx result = value;
1321 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1322 WB_END
1323
1324 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1325 uintx result = value;
1326 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1327 WB_END
1328
1329 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1330 uint64_t result = value;
1331 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1332 WB_END
1333
1334 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1335 size_t result = value;
1336 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1337 WB_END
1338
1339 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1340 double result = value;
1341 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1342 WB_END
1343
1344 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1345 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1346 const char* ccstrValue;
1347 if (value == NULL) {
1348 ccstrValue = NULL;
1349 }
1350 else {
1351 ccstrValue = env->GetStringUTFChars(value, NULL);
1352 CHECK_JNI_EXCEPTION(env);
1353 }
1354 ccstr ccstrResult = ccstrValue;
1355 bool needFree;
1356 {
1357 ThreadInVMfromNative ttvfn(thread); // back to VM
1358 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1359 }
1360 if (value != NULL) {
1361 env->ReleaseStringUTFChars(value, ccstrValue);
1362 }
1363 if (needFree) {
1364 FREE_C_HEAP_ARRAY(char, ccstrResult);
1365 }
1366 WB_END
1367
1368 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1369 WhiteBox::compilation_locked = true;
1370 WB_END
1371
1372 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1373 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1374 WhiteBox::compilation_locked = false;
1375 mo.notify_all();
1376 WB_END
1377
1378 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1379 // Force a code cache sweep and block until it finished
1380 NMethodSweeper::force_sweep();
1381 WB_END
1382
1383 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1384 ResourceMark rm(THREAD);
1385 int len;
1386 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1387 return (StringTable::lookup(name, len) != NULL);
1388 WB_END
1389
1390 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1391 if (AsyncDeflateIdleMonitors) {
1392 // AsyncDeflateIdleMonitors needs to know when System.gc() or
1393 // the equivalent is called so any special clean up can be done
1394 // at a safepoint, e.g., TestHumongousClassLoader.java.
1395 ObjectSynchronizer::set_is_special_deflation_requested(true);
1396 }
1397 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1398 Universe::heap()->collect(GCCause::_wb_full_gc);
1399 #if INCLUDE_G1GC
1400 if (UseG1GC) {
1401 // Needs to be cleared explicitly for G1
1402 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1403 }
1404 #endif // INCLUDE_G1GC
1405 WB_END
1406
1407 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1408 Universe::heap()->collect(GCCause::_wb_young_gc);
1409 WB_END
1410
1411 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1412 // static+volatile in order to force the read to happen
1413 // (not be eliminated by the compiler)
1414 static char c;
1415 static volatile char* p;
1416
1417 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1418 if (p == NULL) {
1419 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1420 }
1421
1422 c = *p;
1423 WB_END
1424
1425 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1426 const char* features = VM_Version::features_string();
1427 ThreadToNativeFromVM ttn(thread);
1428 jstring features_string = env->NewStringUTF(features);
1429
1430 CHECK_JNI_EXCEPTION_(env, NULL);
1431
1432 return features_string;
1433 WB_END
1434
1435 int WhiteBox::get_blob_type(const CodeBlob* code) {
1436 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1437 if (code->is_aot()) {
1438 return -1;
1439 }
1440 return CodeCache::get_code_heap(code)->code_blob_type();
1441 }
1442
1443 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1444 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1445 return CodeCache::get_code_heap(blob_type);
1446 }
1447
1448 struct CodeBlobStub {
1449 CodeBlobStub(const CodeBlob* blob) :
1450 name(os::strdup(blob->name())),
1451 size(blob->size()),
1452 blob_type(WhiteBox::get_blob_type(blob)),
1453 address((jlong) blob) { }
1454 ~CodeBlobStub() { os::free((void*) name); }
1455 const char* const name;
1456 const jint size;
1457 const jint blob_type;
1458 const jlong address;
1459 };
1460
1461 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1462 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1463 CHECK_JNI_EXCEPTION_(env, NULL);
1464 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1465
1466 jstring name = env->NewStringUTF(cb->name);
1467 CHECK_JNI_EXCEPTION_(env, NULL);
1468 env->SetObjectArrayElement(result, 0, name);
1469
1470 jobject obj = integerBox(thread, env, cb->size);
1471 CHECK_JNI_EXCEPTION_(env, NULL);
1472 env->SetObjectArrayElement(result, 1, obj);
1473
1474 obj = integerBox(thread, env, cb->blob_type);
1475 CHECK_JNI_EXCEPTION_(env, NULL);
1476 env->SetObjectArrayElement(result, 2, obj);
1477
1478 obj = longBox(thread, env, cb->address);
1479 CHECK_JNI_EXCEPTION_(env, NULL);
1480 env->SetObjectArrayElement(result, 3, obj);
1481
1482 return result;
1483 }
1484
1485 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1486 ResourceMark rm(THREAD);
1487 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1488 CHECK_JNI_EXCEPTION_(env, NULL);
1489 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1490 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1491 jobjectArray result = NULL;
1492 if (code == NULL) {
1493 return result;
1494 }
1495 int comp_level = code->comp_level();
1496 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1497
1498 ThreadToNativeFromVM ttn(thread);
1499 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1500 CHECK_JNI_EXCEPTION_(env, NULL);
1501 result = env->NewObjectArray(5, clazz, NULL);
1502 if (result == NULL) {
1503 return result;
1504 }
1505
1506 CodeBlobStub stub(code);
1507 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1508 CHECK_JNI_EXCEPTION_(env, NULL);
1509 env->SetObjectArrayElement(result, 0, codeBlob);
1510
1511 jobject level = integerBox(thread, env, comp_level);
1512 CHECK_JNI_EXCEPTION_(env, NULL);
1513 env->SetObjectArrayElement(result, 1, level);
1514
1515 jbyteArray insts = env->NewByteArray(insts_size);
1516 CHECK_JNI_EXCEPTION_(env, NULL);
1517 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1518 env->SetObjectArrayElement(result, 2, insts);
1519
1520 jobject id = integerBox(thread, env, code->compile_id());
1521 CHECK_JNI_EXCEPTION_(env, NULL);
1522 env->SetObjectArrayElement(result, 3, id);
1523
1524 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1525 CHECK_JNI_EXCEPTION_(env, NULL);
1526 env->SetObjectArrayElement(result, 4, entry_point);
1527
1528 return result;
1529 WB_END
1530
1531 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1532 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1533 BufferBlob* blob;
1534 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1535 if (full_size < size) {
1536 full_size += align_up(size - full_size, oopSize);
1537 }
1538 {
1539 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1540 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1541 if (blob != NULL) {
1542 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1543 }
1544 }
1545 // Track memory usage statistic after releasing CodeCache_lock
1546 MemoryService::track_code_cache_memory_usage();
1547 return blob;
1548 }
1549
1550 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1551 if (size < 0) {
1552 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1553 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1554 }
1555 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1556 WB_END
1557
1558 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1559 if (addr == 0) {
1560 return;
1561 }
1562 BufferBlob::free((BufferBlob*) addr);
1563 WB_END
1564
1565 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1566 ResourceMark rm;
1567 GrowableArray<CodeBlobStub*> blobs;
1568 {
1569 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1570 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1571 if (heap == NULL) {
1572 return NULL;
1573 }
1574 for (CodeBlob* cb = (CodeBlob*) heap->first();
1575 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1576 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1577 new (stub) CodeBlobStub(cb);
1578 blobs.append(stub);
1579 }
1580 }
1581 ThreadToNativeFromVM ttn(thread);
1582 jobjectArray result = NULL;
1583 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1584 CHECK_JNI_EXCEPTION_(env, NULL);
1585 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1586 CHECK_JNI_EXCEPTION_(env, NULL);
1587 if (result == NULL) {
1588 return result;
1589 }
1590 int i = 0;
1591 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1592 it != blobs.end(); ++it) {
1593 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1594 CHECK_JNI_EXCEPTION_(env, NULL);
1595 env->SetObjectArrayElement(result, i, obj);
1596 CHECK_JNI_EXCEPTION_(env, NULL);
1597 ++i;
1598 }
1599 return result;
1600 WB_END
1601
1602 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1603 return CompileBroker::get_compilation_activity_mode();
1604 WB_END
1605
1606 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1607 if (addr == 0) {
1608 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1609 "WB_GetCodeBlob: addr is null");
1610 }
1611 ThreadToNativeFromVM ttn(thread);
1612 CodeBlobStub stub((CodeBlob*) addr);
1613 return codeBlob2objectArray(thread, env, &stub);
1614 WB_END
1615
1616 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1617 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1618 CHECK_JNI_EXCEPTION_(env, 0);
1619 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1620 return (jlong) mh->method_data();
1621 WB_END
1622
1623 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1624 return (jlong) Thread::current()->stack_size();
1625 WB_END
1626
1627 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1628 JavaThread* t = JavaThread::current();
1629 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1630 WB_END
1631
1632
1633 int WhiteBox::array_bytes_to_length(size_t bytes) {
1634 return Array<u1>::bytes_to_length(bytes);
1635 }
1636
1637 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1638 if (size < 0) {
1639 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1640 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1641 }
1642
1643 oop class_loader_oop = JNIHandles::resolve(class_loader);
1644 ClassLoaderData* cld = class_loader_oop != NULL
1645 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1646 : ClassLoaderData::the_null_class_loader_data();
1647
1648 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1649
1650 return (jlong)(uintptr_t)metadata;
1651 WB_END
1652
1653 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1654 oop class_loader_oop = JNIHandles::resolve(class_loader);
1655 ClassLoaderData* cld = class_loader_oop != NULL
1656 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1657 : ClassLoaderData::the_null_class_loader_data();
1658
1659 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1660 WB_END
1661
1662 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1663 jstring version, jstring location, jobjectArray packages))
1664 ResourceMark rm(THREAD);
1665
1666 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1667 objArrayHandle packages_h(THREAD, packages_oop);
1668 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1669
1670 char** pkgs = NULL;
1671 if (num_packages > 0) {
1672 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1673 for (int x = 0; x < num_packages; x++) {
1674 oop pkg_str = packages_h->obj_at(x);
1675 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1676 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1677 err_msg("Bad package name"));
1678 }
1679 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1680 }
1681 }
1682 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1683 WB_END
1684
1685 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1686 ResourceMark rm(THREAD);
1687 char* package_name = NULL;
1688 if (package != NULL) {
1689 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1690 }
1691 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1692 WB_END
1693
1694 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1695 ResourceMark rm(THREAD);
1696 char* package_name = NULL;
1697 if (package != NULL) {
1698 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1699 }
1700 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1701 WB_END
1702
1703 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1704 ResourceMark rm(THREAD);
1705 char* package_name = NULL;
1706 if (package != NULL) {
1707 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1708 }
1709 Modules::add_module_exports(module, package_name, NULL, CHECK);
1710 WB_END
1711
1712 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1713 Modules::add_reads_module(from_module, source_module, CHECK);
1714 WB_END
1715
1716 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1717 if (inc < 0) {
1718 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1719 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1720 }
1721
1722 jlong max_size_t = (jlong) ((size_t) -1);
1723 if (inc > max_size_t) {
1724 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1725 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1726 }
1727
1728 size_t new_cap_until_GC = 0;
1729 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1730 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1731 if (!success) {
1732 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1733 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1734 "due to contention with another thread");
1735 }
1736 return (jlong) new_cap_until_GC;
1737 WB_END
1738
1739 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1740 return (jlong) MetaspaceGC::capacity_until_GC();
1741 WB_END
1742
1743 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1744 return MetaspaceGC::should_concurrent_collect();
1745 WB_END
1746
1747 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1748 return (jlong)Metaspace::reserve_alignment();
1749 WB_END
1750
1751 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1752 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1753 Monitor::_safepoint_check_always :
1754 Monitor::_safepoint_check_never;
1755 Monitor::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ?
1756 Monitor::_no_safepoint_check_flag :
1757 Monitor::_safepoint_check_flag;
1758 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1759 sfpt_check_attempted);
1760 WB_END
1761
1762 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1763 oop obj_oop = JNIHandles::resolve(obj);
1764 return (jboolean) obj_oop->mark().has_monitor();
1765 WB_END
1766
1767 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1768 VM_ForceSafepoint force_safepoint_op;
1769 VMThread::execute(&force_safepoint_op);
1770 WB_END
1771
1772 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1773 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1774 return (jlong) ik->constants();
1775 WB_END
1776
1777 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1778 return ConstantPool::CPCACHE_INDEX_TAG;
1779 WB_END
1780
1781 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1782 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1783 ConstantPool* cp = ik->constants();
1784 if (cp->cache() == NULL) {
1785 return -1;
1786 }
1787 return cp->cache()->length();
1788 WB_END
1789
1790 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1791 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1792 ConstantPool* cp = ik->constants();
1793 if (cp->cache() == NULL) {
1794 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1795 }
1796 jint cpci = index;
1797 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1798 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1799 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1800 }
1801 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1802 return cpi;
1803 WB_END
1804
1805 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1806 return ConstantPool::encode_invokedynamic_index(index);
1807 WB_END
1808
1809 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1810 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1811 VMThread::execute(&clear_ics);
1812 WB_END
1813
1814 template <typename T>
1815 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1816 assert(value != NULL, "sanity");
1817 if (method == NULL || name == NULL) {
1818 return false;
1819 }
1820 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1821 CHECK_JNI_EXCEPTION_(env, false);
1822 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1823 // can't be in VM when we call JNI
1824 ThreadToNativeFromVM ttnfv(thread);
1825 const char* flag_name = env->GetStringUTFChars(name, NULL);
1826 CHECK_JNI_EXCEPTION_(env, false);
1827 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1828 env->ReleaseStringUTFChars(name, flag_name);
1829 return result;
1830 }
1831
1832 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1833 bool result;
1834 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1835 // can't be in VM when we call JNI
1836 ThreadToNativeFromVM ttnfv(thread);
1837 return booleanBox(thread, env, result);
1838 }
1839 return NULL;
1840 WB_END
1841
1842 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1843 intx result;
1844 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1845 // can't be in VM when we call JNI
1846 ThreadToNativeFromVM ttnfv(thread);
1847 return longBox(thread, env, result);
1848 }
1849 return NULL;
1850 WB_END
1851
1852 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1853 uintx result;
1854 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1855 // can't be in VM when we call JNI
1856 ThreadToNativeFromVM ttnfv(thread);
1857 return longBox(thread, env, result);
1858 }
1859 return NULL;
1860 WB_END
1861
1862 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1863 double result;
1864 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1865 // can't be in VM when we call JNI
1866 ThreadToNativeFromVM ttnfv(thread);
1867 return doubleBox(thread, env, result);
1868 }
1869 return NULL;
1870 WB_END
1871
1872 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1873 ccstr ccstrResult;
1874 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1875 // can't be in VM when we call JNI
1876 ThreadToNativeFromVM ttnfv(thread);
1877 jstring result = env->NewStringUTF(ccstrResult);
1878 CHECK_JNI_EXCEPTION_(env, NULL);
1879 return result;
1880 }
1881 return NULL;
1882 WB_END
1883
1884 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1885 const char* p = Arguments::get_default_shared_archive_path();
1886 ThreadToNativeFromVM ttn(thread);
1887 jstring path_string = env->NewStringUTF(p);
1888
1889 CHECK_JNI_EXCEPTION_(env, NULL);
1890
1891 return path_string;
1892 WB_END
1893
1894 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1895 return UseSharedSpaces;
1896 WB_END
1897
1898 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
1899 return FileMapInfo::memory_mapping_failed();
1900 WB_END
1901
1902 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1903 oop obj_oop = JNIHandles::resolve(obj);
1904 return HeapShared::is_archived_object(obj_oop);
1905 WB_END
1906
1907 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1908 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1909 WB_END
1910
1911 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1912 return !HeapShared::closed_archive_heap_region_mapped();
1913 WB_END
1914
1915 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1916 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1917 if (k->is_instance_klass()) {
1918 InstanceKlass *ik = InstanceKlass::cast(k);
1919 ConstantPool *cp = ik->constants();
1920 objArrayOop refs = cp->resolved_references();
1921 return (jobject)JNIHandles::make_local(env, refs);
1922 } else {
1923 return NULL;
1924 }
1925 WB_END
1926
1927 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
1928 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1929 if (!k->is_instance_klass()) {
1930 return;
1931 }
1932 InstanceKlass *ik = InstanceKlass::cast(k);
1933 ik->link_class(THREAD); // may throw verification error
1934 WB_END
1935
1936 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1937 return HeapShared::open_archive_heap_region_mapped();
1938 WB_END
1939
1940 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1941 #if INCLUDE_CDS
1942 # ifdef _LP64
1943 if (!UseCompressedOops || !UseCompressedClassPointers) {
1944 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1945 return false;
1946 }
1947 # endif // _LP64
1948 return true;
1949 #else
1950 return false;
1951 #endif // INCLUDE_CDS
1952 WB_END
1953
1954 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1955 return HeapShared::is_heap_object_archiving_allowed();
1956 WB_END
1957
1958
1959 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1960 #if INCLUDE_JFR
1961 return true;
1962 #else
1963 return false;
1964 #endif // INCLUDE_JFR
1965 WB_END
1966
1967 #if INCLUDE_CDS
1968
1969 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1970 ResourceMark rm;
1971 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1972 int result = CDSOffsets::find_offset(c_name);
1973 return (jint)result;
1974 WB_END
1975
1976 #endif // INCLUDE_CDS
1977
1978 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1979 class TraceSelfClosure : public ThreadClosure {
1980 jint _num_threads_completed;
1981
1982 void do_thread(Thread* th) {
1983 assert(th->is_Java_thread(), "sanity");
1984 JavaThread* jt = (JavaThread*)th;
1985 ResourceMark rm;
1986
1987 jt->print_on(tty);
1988 jt->print_stack_on(tty);
1989 tty->cr();
1990 Atomic::inc(&_num_threads_completed);
1991 }
1992
1993 public:
1994 TraceSelfClosure() : _num_threads_completed(0) {}
1995
1996 jint num_threads_completed() const { return _num_threads_completed; }
1997 };
1998 TraceSelfClosure tsc;
1999
2000 if (all_threads) {
2001 Handshake::execute(&tsc);
2002 } else {
2003 oop thread_oop = JNIHandles::resolve(thread_handle);
2004 if (thread_oop != NULL) {
2005 JavaThread* target = java_lang_Thread::thread(thread_oop);
2006 Handshake::execute(&tsc, target);
2007 }
2008 }
2009 return tsc.num_threads_completed();
2010 WB_END
2011
2012 //Some convenience methods to deal with objects from java
2013 int WhiteBox::offset_for_field(const char* field_name, oop object,
2014 Symbol* signature_symbol) {
2015 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2016 Thread* THREAD = Thread::current();
2017
2018 //Get the class of our object
2019 Klass* arg_klass = object->klass();
2020 //Turn it into an instance-klass
2021 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2022
2023 //Create symbols to look for in the class
2024 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2025
2026 //To be filled in with an offset of the field we're looking for
2027 fieldDescriptor fd;
2028
2029 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2030 if (res == NULL) {
2031 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2032 name_symbol->as_C_string());
2033 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2034 }
2035
2036 //fetch the field at the offset we've found
2037 int dest_offset = fd.offset();
2038
2039 return dest_offset;
2040 }
2041
2042
2043 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2044 int offset = offset_for_field(field_name, object,
2045 vmSymbols::string_signature());
2046 oop string = object->obj_field(offset);
2047 if (string == NULL) {
2048 return NULL;
2049 }
2050 const char* ret = java_lang_String::as_utf8_string(string);
2051 return ret;
2052 }
2053
2054 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2055 int offset =
2056 offset_for_field(field_name, object, vmSymbols::bool_signature());
2057 bool ret = (object->bool_field(offset) == JNI_TRUE);
2058 return ret;
2059 }
2060
2061 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2062 ResourceMark rm;
2063 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2064
2065 // one by one registration natives for exception catching
2066 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2067 CHECK_JNI_EXCEPTION(env);
2068 for (int i = 0, n = method_count; i < n; ++i) {
2069 // Skip dummy entries
2070 if (method_array[i].fnPtr == NULL) continue;
2071 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2072 jthrowable throwable_obj = env->ExceptionOccurred();
2073 if (throwable_obj != NULL) {
2074 env->ExceptionClear();
2075 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2076 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2077 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2078 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
2079 method_array[i].name, method_array[i].signature);
2080 }
2081 } else {
2082 // Registration failed unexpectedly.
2083 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
2084 method_array[i].name, method_array[i].signature);
2085 env->UnregisterNatives(wbclass);
2086 break;
2087 }
2088 }
2089 }
2090 }
2091
2092 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2093 // can't be in VM when we call JNI
2094 ThreadToNativeFromVM ttnfv(thread);
2095 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2096 CHECK_JNI_EXCEPTION_(env, 0);
2097 int ret;
2098 {
2099 ThreadInVMfromNative ttvfn(thread); // back to VM
2100 ret = DirectivesParser::parse_string(dir, tty);
2101 }
2102 env->ReleaseStringUTFChars(compDirect, dir);
2103 // -1 for error parsing directive. Return 0 as number of directives added.
2104 if (ret == -1) {
2105 ret = 0;
2106 }
2107 return (jint) ret;
2108 WB_END
2109
2110 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2111 DirectivesStack::pop(count);
2112 WB_END
2113
2114 // Checks that the library libfile has the noexecstack bit set.
2115 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2116 jboolean ret = false;
2117 #ifdef LINUX
2118 // Can't be in VM when we call JNI.
2119 ThreadToNativeFromVM ttnfv(thread);
2120 const char* lf = env->GetStringUTFChars(libfile, NULL);
2121 CHECK_JNI_EXCEPTION_(env, 0);
2122 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2123 env->ReleaseStringUTFChars(libfile, lf);
2124 #endif
2125 return ret;
2126 WB_END
2127
2128 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2129 LINUX_ONLY(return OSContainer::is_containerized();)
2130 return false;
2131 WB_END
2132
2133 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2134 os::print_os_info(tty);
2135 WB_END
2136
2137 // Elf decoder
2138 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2139 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2140 ElfFile::_do_not_cache_elf_section = true;
2141 #endif
2142 WB_END
2143
2144 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2145 return (jlong) ResolvedMethodTable::items_count();
2146 WB_END
2147
2148 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2149 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2150 WB_END
2151
2152 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o))
2153 jint result = 0;
2154 #if INCLUDE_AOT
2155 result = (jint) AOTLoader::heaps_count();
2156 #endif
2157 return result;
2158 WB_END
2159
2160 #define CC (char*)
2161
2162 static JNINativeMethod methods[] = {
2163 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2164 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2165 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2166 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2167 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2168 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2169 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2170 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2171 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2172 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2173 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2174 {CC"parseCommandLine0",
2175 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2176 (void*) &WB_ParseCommandLine
2177 },
2178 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2179 (void*)&WB_AddToBootstrapClassLoaderSearch},
2180 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2181 (void*)&WB_AddToSystemClassLoaderSearch},
2182 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2183 (void*)&WB_GetCompressedOopsMaxHeapSize},
2184 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2185 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2186 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2187 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2188 #if INCLUDE_CDS
2189 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2190 #endif
2191 #if INCLUDE_G1GC
2192 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2193 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2194 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2195 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2196 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2197 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2198 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2199 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2200 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2201 (void*)&WB_G1AuxiliaryMemoryUsage },
2202 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2203 #endif // INCLUDE_G1GC
2204 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
2205 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart },
2206 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd },
2207 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart },
2208 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd },
2209 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
2210 #if INCLUDE_PARALLELGC
2211 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2212 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2213 #endif
2214 #if INCLUDE_NMT
2215 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2216 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2217 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2218 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2219 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2220 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2221 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2222 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2223 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2224 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2225 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2226 #endif // INCLUDE_NMT
2227 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2228 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2229 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2230 (void*)&WB_DeoptimizeMethod },
2231 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2232 (void*)&WB_IsMethodCompiled },
2233 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2234 (void*)&WB_IsMethodCompilable},
2235 {CC"isMethodQueuedForCompilation0",
2236 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2237 {CC"isIntrinsicAvailable0",
2238 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2239 (void*)&WB_IsIntrinsicAvailable},
2240 {CC"makeMethodNotCompilable0",
2241 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2242 {CC"testSetDontInlineMethod0",
2243 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2244 {CC"getMethodCompilationLevel0",
2245 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2246 {CC"getMethodEntryBci0",
2247 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2248 {CC"getCompileQueueSize",
2249 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2250 {CC"testSetForceInlineMethod0",
2251 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2252 {CC"enqueueMethodForCompilation0",
2253 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2254 {CC"enqueueInitializerForCompilation0",
2255 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2256 {CC"markMethodProfiled",
2257 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2258 {CC"clearMethodState0",
2259 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2260 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2261 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2262 {CC"matchesMethod",
2263 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2264 (void*)&WB_MatchesMethod},
2265 {CC"matchesInline",
2266 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2267 (void*)&WB_MatchesInline},
2268 {CC"shouldPrintAssembly",
2269 CC"(Ljava/lang/reflect/Executable;I)Z",
2270 (void*)&WB_ShouldPrintAssembly},
2271
2272 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2273 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2274 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2275 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2276 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2277 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2278 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2279 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2280 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2281 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2282 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2283 (void*)&WB_SetStringVMFlag},
2284 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2285 (void*)&WB_GetBooleanVMFlag},
2286 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2287 (void*)&WB_GetIntVMFlag},
2288 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2289 (void*)&WB_GetUintVMFlag},
2290 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2291 (void*)&WB_GetIntxVMFlag},
2292 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2293 (void*)&WB_GetUintxVMFlag},
2294 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2295 (void*)&WB_GetUint64VMFlag},
2296 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2297 (void*)&WB_GetSizeTVMFlag},
2298 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2299 (void*)&WB_GetDoubleVMFlag},
2300 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2301 (void*)&WB_GetStringVMFlag},
2302 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2303 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2304 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2305 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2306 {CC"allocateMetaspace",
2307 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2308 {CC"freeMetaspace",
2309 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2310 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2311 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2312 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2313 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2314 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2315 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2316 (void*)&WB_GetNMethod },
2317 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2318 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2319 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2320 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2321 {CC"getCompilationActivityMode",
2322 CC"()I", (void*)&WB_GetCompilationActivityMode},
2323 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2324 (void*)&WB_GetMethodData },
2325 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2326 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2327 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2328 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2329 (void*)&WB_DefineModule },
2330 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2331 (void*)&WB_AddModuleExports },
2332 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2333 (void*)&WB_AddReadsModule },
2334 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2335 (void*)&WB_AddModuleExportsToAllUnnamed },
2336 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2337 (void*)&WB_AddModuleExportsToAll },
2338 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2339 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2340 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2341 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2342 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2343 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2344 {CC"remapInstructionOperandFromCPCache0",
2345 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2346 {CC"encodeConstantPoolIndyIndex0",
2347 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2348 {CC"getMethodBooleanOption",
2349 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2350 (void*)&WB_GetMethodBooleaneOption},
2351 {CC"getMethodIntxOption",
2352 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2353 (void*)&WB_GetMethodIntxOption},
2354 {CC"getMethodUintxOption",
2355 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2356 (void*)&WB_GetMethodUintxOption},
2357 {CC"getMethodDoubleOption",
2358 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2359 (void*)&WB_GetMethodDoubleOption},
2360 {CC"getMethodStringOption",
2361 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2362 (void*)&WB_GetMethodStringOption},
2363 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2364 (void*)&WB_GetDefaultArchivePath},
2365 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2366 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2367 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2368 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2369 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2370 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2371 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2372 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2373 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2374 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2375 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2376
2377 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2378 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2379 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2380 (void*)&WB_AddCompilerDirective },
2381 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2382 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2383 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2384 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2385 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2386 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2387 (void*)&WB_RequestConcurrentGCPhase},
2388 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2389 (void*)&WB_CheckLibSpecifiesNoexecstack},
2390 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2391 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2392 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2393 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2394 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2395 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount },
2396 };
2397
2398
2399 #undef CC
2400
2401 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2402 {
2403 if (WhiteBoxAPI) {
2404 // Make sure that wbclass is loaded by the null classloader
2405 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2406 Handle loader(THREAD, ik->class_loader());
2407 if (loader.is_null()) {
2408 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2409 WhiteBox::set_used();
2410 }
2411 }
2412 }
2413 JVM_END