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/thread.hpp"
74 #include "runtime/threadSMR.hpp"
75 #include "runtime/vframe.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 G1CollectedHeap* g1h = G1CollectedHeap::heap();
467 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
468 g1h->collect(GCCause::_wb_conc_mark);
469 return true;
470 }
471 return false;
472 }
473 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
474 WB_END
475
476 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
477 if (UseG1GC) {
478 return (jint)HeapRegion::GrainBytes;
479 }
480 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
481 WB_END
482
483 #endif // INCLUDE_G1GC
484
485 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
486 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o))
487 #if INCLUDE_G1GC
488 if (UseG1GC) {
489 G1CollectedHeap* g1h = G1CollectedHeap::heap();
490 if (g1h->is_heterogeneous_heap()) {
491 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram();
492 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
493 } else {
494 return (jlong)g1h->base();
495 }
496 }
497 #endif // INCLUDE_G1GC
498 #if INCLUDE_PARALLELGC
499 if (UseParallelGC) {
500 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
501 if (AllocateOldGenAt != NULL) {
502 MemRegion reserved = ps_heap->young_gen()->reserved();
503 return (jlong)reserved.start();
504 } else {
505 return (jlong)ps_heap->base();
506 }
507 }
508 #endif // INCLUDE_PARALLELGC
509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC");
510 WB_END
511
512 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o))
513 #if INCLUDE_G1GC
514 if (UseG1GC) {
515 G1CollectedHeap* g1h = G1CollectedHeap::heap();
516 if (g1h->is_heterogeneous_heap()) {
517 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram();
518 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
519 } else {
520 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes();
521 }
522 }
523 #endif // INCLUDE_G1GC
524 #if INCLUDE_PARALLELGC
525 if (UseParallelGC) {
526 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
527 if (AllocateOldGenAt != NULL) {
528 MemRegion reserved = ps_heap->young_gen()->reserved();
529 return (jlong)reserved.end();
530 } else {
531 return (jlong)ps_heap->reserved_region().end();
532 }
533 }
534 #endif // INCLUDE_PARALLELGC
535 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC");
536 WB_END
537
538 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o))
539 #if INCLUDE_G1GC
540 if (UseG1GC) {
541 G1CollectedHeap* g1h = G1CollectedHeap::heap();
542 if (g1h->is_heterogeneous_heap()) {
543 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
544 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
545 } else {
546 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
547 }
548 }
549 #endif // INCLUDE_G1GC
550 #if INCLUDE_PARALLELGC
551 if (UseParallelGC) {
552 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
553 if (AllocateOldGenAt != NULL) {
554 MemRegion reserved = ps_heap->old_gen()->reserved();
555 return (jlong)reserved.start();
556 } else {
557 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
558 }
559 }
560 #endif // INCLUDE_PARALLELGC
561 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC");
562 WB_END
563
564 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o))
565 #if INCLUDE_G1GC
566 if (UseG1GC) {
567 G1CollectedHeap* g1h = G1CollectedHeap::heap();
568 if (g1h->is_heterogeneous_heap()) {
569 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
570 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
571 } else {
572 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
573 }
574 }
575 #endif // INCLUDE_G1GC
576 #if INCLUDE_PARALLELGC
577 if (UseParallelGC) {
578 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
579 if (AllocateOldGenAt != NULL) {
580 MemRegion reserved = ps_heap->old_gen()->reserved();
581 return (jlong)reserved.end();
582 } else {
583 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
584 }
585 }
586 #endif // INCLUDE_PARALLELGC
587 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC");
588 WB_END
589
590 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
591
592 #if INCLUDE_PARALLELGC
593
594 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
595 if (UseParallelGC) {
596 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
597 }
598 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
599 WB_END
600
601 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
602 if (UseParallelGC) {
603 return GenAlignment;
604 }
605 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
606 WB_END
607
608 #endif // INCLUDE_PARALLELGC
609
610 #if INCLUDE_G1GC
611
612 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
613 if (UseG1GC) {
614 ResourceMark rm(THREAD);
615 G1CollectedHeap* g1h = G1CollectedHeap::heap();
616 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
617 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
618 return JNIHandles::make_local(env, h());
619 }
620 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
621 WB_END
622
623 class OldRegionsLivenessClosure: public HeapRegionClosure {
624
625 private:
626 const int _liveness;
627 size_t _total_count;
628 size_t _total_memory;
629 size_t _total_memory_to_free;
630
631 public:
632 OldRegionsLivenessClosure(int liveness) :
633 _liveness(liveness),
634 _total_count(0),
635 _total_memory(0),
636 _total_memory_to_free(0) { }
637
638 size_t total_count() { return _total_count; }
639 size_t total_memory() { return _total_memory; }
640 size_t total_memory_to_free() { return _total_memory_to_free; }
641
642 bool do_heap_region(HeapRegion* r) {
643 if (r->is_old()) {
644 size_t prev_live = r->marked_bytes();
645 size_t live = r->live_bytes();
646 size_t size = r->used();
647 size_t reg_size = HeapRegion::GrainBytes;
648 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
649 _total_memory += size;
650 ++_total_count;
651 if (size == reg_size) {
652 // we don't include non-full regions since they are unlikely included in mixed gc
653 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
654 _total_memory_to_free += size - prev_live;
655 }
656 }
657 }
658 return false;
659 }
660 };
661
662
663 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
664 if (!UseG1GC) {
665 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
666 }
667 if (liveness < 0) {
668 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
669 }
670
671 G1CollectedHeap* g1h = G1CollectedHeap::heap();
672 OldRegionsLivenessClosure rli(liveness);
673 g1h->heap_region_iterate(&rli);
674
675 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
676 result->long_at_put(0, rli.total_count());
677 result->long_at_put(1, rli.total_memory());
678 result->long_at_put(2, rli.total_memory_to_free());
679 return (jlongArray) JNIHandles::make_local(env, result);
680 WB_END
681
682 #endif // INCLUDE_G1GC
683
684 #if INCLUDE_NMT
685 // Alloc memory using the test memory type so that we can use that to see if
686 // NMT picks it up correctly
687 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
688 jlong addr = 0;
689 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
690 return addr;
691 WB_END
692
693 // Alloc memory with pseudo call stack. The test can create psudo malloc
694 // allocation site to stress the malloc tracking.
695 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
696 address pc = (address)(size_t)pseudo_stack;
697 NativeCallStack stack(&pc, 1);
698 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
699 WB_END
700
701 // Alloc memory with pseudo call stack and specific memory type.
702 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
703 address pc = (address)(size_t)pseudo_stack;
704 NativeCallStack stack(&pc, 1);
705 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
706 WB_END
707
708 // Free the memory allocated by NMTAllocTest
709 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
710 os::free((void*)(uintptr_t)mem);
711 WB_END
712
713 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
714 jlong addr = 0;
715
716 addr = (jlong)(uintptr_t)os::reserve_memory(size);
717 MemTracker::record_virtual_memory_type((address)addr, mtTest);
718
719 return addr;
720 WB_END
721
722 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
723 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
724 MemTracker::record_virtual_memory_type((address)addr, mtTest);
725
726 return addr;
727 WB_END
728
729 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
730 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
731 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
732 WB_END
733
734 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
735 os::uncommit_memory((char *)(uintptr_t)addr, size);
736 WB_END
737
738 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
739 os::release_memory((char *)(uintptr_t)addr, size);
740 WB_END
741
742 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
743 // Test that we can downgrade NMT levels but not upgrade them.
744 if (MemTracker::tracking_level() == NMT_off) {
745 MemTracker::transition_to(NMT_off);
746 return MemTracker::tracking_level() == NMT_off;
747 } else {
748 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
749 MemTracker::transition_to(NMT_summary);
750 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
751
752 // Can't go to detail once NMT is set to summary.
753 MemTracker::transition_to(NMT_detail);
754 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
755
756 // Shutdown sets tracking level to minimal.
757 MemTracker::shutdown();
758 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
759
760 // Once the tracking level is minimal, we cannot increase to summary.
761 // The code ignores this request instead of asserting because if the malloc site
762 // table overflows in another thread, it tries to change the code to summary.
763 MemTracker::transition_to(NMT_summary);
764 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
765
766 // Really can never go up to detail, verify that the code would never do this.
767 MemTracker::transition_to(NMT_detail);
768 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
769 return MemTracker::tracking_level() == NMT_minimal;
770 }
771 WB_END
772
773 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
774 int hash_size = MallocSiteTable::hash_buckets();
775 assert(hash_size > 0, "NMT hash_size should be > 0");
776 return (jint)hash_size;
777 WB_END
778 #endif // INCLUDE_NMT
779
780 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
781 assert(method != NULL, "method should not be null");
782 ThreadToNativeFromVM ttn(thread);
783 return env->FromReflectedMethod(method);
784 }
785
786 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
787 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
788 private:
789 int _result;
790 const bool _make_not_entrant;
791 public:
792 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
793 _result(0), _make_not_entrant(make_not_entrant) { }
794 int result() const { return _result; }
795
796 void doit() {
797 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
798 if (t->has_last_Java_frame()) {
799 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
800 frame* f = fst.current();
801 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
802 RegisterMap* reg_map = fst.register_map();
803 Deoptimization::deoptimize(t, *f, reg_map);
804 if (_make_not_entrant) {
805 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
806 assert(cm != NULL, "sanity check");
807 cm->make_not_entrant();
808 }
809 ++_result;
810 }
811 }
812 }
813 }
814 }
815 };
816
817 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
818 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
819 VMThread::execute(&op);
820 return op.result();
821 WB_END
822
823 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
824 JavaThread* t = JavaThread::current();
825 bool result = false;
826 if (t->has_last_Java_frame()) {
827 RegisterMap reg_map(t);
828 javaVFrame *jvf = t->last_java_vframe(®_map);
829 for (jint d = 0; d < depth && jvf != NULL; d++ ) {
830 jvf = jvf->java_sender();
831 }
832 result = jvf != NULL && jvf->fr().is_deoptimized_frame();
833 }
834 return result;
835 WB_END
836
837 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
838 MutexLocker mu(Compile_lock);
839 CodeCache::mark_all_nmethods_for_deoptimization();
840 VM_Deoptimize op;
841 VMThread::execute(&op);
842 WB_END
843
844 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
845 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
846 int result = 0;
847 CHECK_JNI_EXCEPTION_(env, result);
848 MutexLocker mu(Compile_lock);
849 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
850 if (is_osr) {
851 result += mh->mark_osr_nmethods();
852 } else if (mh->code() != NULL) {
853 mh->code()->mark_for_deoptimization();
854 ++result;
855 }
856 result += CodeCache::mark_for_deoptimization(mh());
857 if (result > 0) {
858 VM_Deoptimize op;
859 VMThread::execute(&op);
860 }
861 return result;
862 WB_END
863
864 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
865 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
866 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
867 MutexLocker mu(Compile_lock);
868 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
869 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
870 if (code == NULL) {
871 return JNI_FALSE;
872 }
873 return (code->is_alive() && !code->is_marked_for_deoptimization());
874 WB_END
875
876 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
877 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
878 return false;
879 }
880 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
881 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
882 MutexLocker mu(Compile_lock);
883 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
884 if (is_osr) {
885 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
886 } else {
887 return CompilationPolicy::can_be_compiled(mh, comp_level);
888 }
889 WB_END
890
891 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
892 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
893 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
894 MutexLocker mu(Compile_lock);
895 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
896 return mh->queued_for_compilation();
897 WB_END
898
899 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
900 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
901 return false; // Intrinsic is not available on a non-existent compilation level.
902 }
903 jmethodID method_id, compilation_context_id;
904 method_id = reflected_method_to_jmid(thread, env, method);
905 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
906 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
907
908 DirectiveSet* directive;
909 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
910 assert(comp != NULL, "compiler not available");
911 if (compilation_context != NULL) {
912 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
913 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
914 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
915 directive = DirectivesStack::getMatchingDirective(cch, comp);
916 } else {
917 // Calling with NULL matches default directive
918 directive = DirectivesStack::getDefaultDirective(comp);
919 }
920 bool result = comp->is_intrinsic_available(mh, directive);
921 DirectivesStack::release(directive);
922 return result;
923 WB_END
924
925 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
926 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
927 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
928 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
929 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
930 return (code != NULL ? code->comp_level() : CompLevel_none);
931 WB_END
932
933 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
934 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
935 CHECK_JNI_EXCEPTION(env);
936 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
937 if (is_osr) {
938 mh->set_not_osr_compilable("WhiteBox", comp_level);
939 } else {
940 mh->set_not_compilable("WhiteBox", comp_level);
941 }
942 WB_END
943
944 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
945 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
946 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
947 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
948 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
949 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
950 WB_END
951
952 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
953 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
954 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
955 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
956 bool result = mh->dont_inline();
957 mh->set_dont_inline(value == JNI_TRUE);
958 return result;
959 WB_END
960
961 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
962 if (comp_level == CompLevel_any) {
963 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
964 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
965 } else {
966 return CompileBroker::queue_size(comp_level);
967 }
968 WB_END
969
970 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
971 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
972 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
973 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
974 bool result = mh->force_inline();
975 mh->set_force_inline(value == JNI_TRUE);
976 return result;
977 WB_END
978
979 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
980 // Screen for unavailable/bad comp level or null method
981 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
982 if (method == NULL) {
983 tty->print_cr("WB error: request to compile NULL method");
984 return false;
985 }
986 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
987 tty->print_cr("WB error: invalid compilation level %d", comp_level);
988 return false;
989 }
990 if (comp == NULL) {
991 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
992 return false;
993 }
994
995 // Check if compilation is blocking
996 methodHandle mh(THREAD, method);
997 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
998 bool is_blocking = !directive->BackgroundCompilationOption;
999 DirectivesStack::release(directive);
1000
1001 // Compile method and check result
1002 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
1003 MutexLocker mu(Compile_lock);
1004 bool is_queued = mh->queued_for_compilation();
1005 if ((!is_blocking && is_queued) || nm != NULL) {
1006 return true;
1007 }
1008 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1009 mh->print_short_name(tty);
1010 tty->cr();
1011 if (is_blocking && is_queued) {
1012 tty->print_cr("WB error: blocking compilation is still in queue!");
1013 }
1014 return false;
1015 }
1016
1017 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1018 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1019 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1020 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1021 WB_END
1022
1023 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1024 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1025 Method* clinit = ik->class_initializer();
1026 if (clinit == NULL) {
1027 return false;
1028 }
1029 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1030 WB_END
1031
1032 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1033 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1034 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1035
1036 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1037 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1038 bool result = directive->PrintAssemblyOption;
1039 DirectivesStack::release(directive);
1040
1041 return result;
1042 WB_END
1043
1044 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1045 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1046 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1047
1048 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1049
1050 ResourceMark rm;
1051 const char* error_msg = NULL;
1052 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1053 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1054
1055 if (m == NULL) {
1056 assert(error_msg != NULL, "Always have an error message");
1057 tty->print_cr("Got error: %s", error_msg);
1058 return -1; // Pattern failed
1059 }
1060
1061 // Pattern works - now check if it matches
1062 int result;
1063 if (m->match(mh, InlineMatcher::force_inline)) {
1064 result = 2; // Force inline match
1065 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1066 result = 1; // Dont inline match
1067 } else {
1068 result = 0; // No match
1069 }
1070 delete m;
1071 return result;
1072 WB_END
1073
1074 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1075 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1076 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1077
1078 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1079
1080 ResourceMark rm;
1081 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1082
1083 const char* error_msg = NULL;
1084
1085 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
1086 if (m == NULL) {
1087 assert(error_msg != NULL, "Must have error_msg");
1088 tty->print_cr("Got error: %s", error_msg);
1089 return -1;
1090 }
1091
1092 // Pattern works - now check if it matches
1093 int result = m->matches(mh);
1094 delete m;
1095 assert(result == 0 || result == 1, "Result out of range");
1096 return result;
1097 WB_END
1098
1099 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1100 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1101 CHECK_JNI_EXCEPTION(env);
1102 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1103
1104 MethodData* mdo = mh->method_data();
1105 if (mdo == NULL) {
1106 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1107 mdo = mh->method_data();
1108 }
1109 mdo->init();
1110 InvocationCounter* icnt = mdo->invocation_counter();
1111 InvocationCounter* bcnt = mdo->backedge_counter();
1112 // set i-counter according to TieredThresholdPolicy::is_method_profiled
1113 icnt->set(InvocationCounter::wait_for_compile, Tier4MinInvocationThreshold);
1114 bcnt->set(InvocationCounter::wait_for_compile, Tier4CompileThreshold);
1115 WB_END
1116
1117 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1118 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1119 CHECK_JNI_EXCEPTION(env);
1120 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1121 MutexLocker mu(Compile_lock);
1122 MethodData* mdo = mh->method_data();
1123 MethodCounters* mcs = mh->method_counters();
1124
1125 if (mdo != NULL) {
1126 mdo->init();
1127 ResourceMark rm;
1128 int arg_count = mdo->method()->size_of_parameters();
1129 for (int i = 0; i < arg_count; i++) {
1130 mdo->set_arg_modified(i, 0);
1131 }
1132 MutexLocker mu(mdo->extra_data_lock());
1133 mdo->clean_method_data(/*always_clean*/true);
1134 }
1135
1136 mh->clear_not_c1_compilable();
1137 mh->clear_not_c2_compilable();
1138 mh->clear_not_c2_osr_compilable();
1139 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1140 if (mcs != NULL) {
1141 mcs->backedge_counter()->init();
1142 mcs->invocation_counter()->init();
1143 mcs->set_interpreter_invocation_count(0);
1144 mcs->set_interpreter_throwout_count(0);
1145
1146 #ifdef TIERED
1147 mcs->set_rate(0.0F);
1148 mh->set_prev_event_count(0);
1149 mh->set_prev_time(0);
1150 #endif
1151 }
1152 WB_END
1153
1154 template <typename T>
1155 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) {
1156 if (name == NULL) {
1157 return false;
1158 }
1159 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1160 const char* flag_name = env->GetStringUTFChars(name, NULL);
1161 CHECK_JNI_EXCEPTION_(env, false);
1162 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1163 JVMFlag::Error result = (*TAt)(flag, value);
1164 env->ReleaseStringUTFChars(name, flag_name);
1165 return (result == JVMFlag::SUCCESS);
1166 }
1167
1168 template <typename T>
1169 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) {
1170 if (name == NULL) {
1171 return false;
1172 }
1173 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1174 const char* flag_name = env->GetStringUTFChars(name, NULL);
1175 CHECK_JNI_EXCEPTION_(env, false);
1176 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1177 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL);
1178 env->ReleaseStringUTFChars(name, flag_name);
1179 return (result == JVMFlag::SUCCESS);
1180 }
1181
1182 template <typename T>
1183 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1184 ResourceMark rm(thread);
1185 jclass clazz = env->FindClass(name->as_C_string());
1186 CHECK_JNI_EXCEPTION_(env, NULL);
1187 jmethodID methodID = env->GetStaticMethodID(clazz,
1188 vmSymbols::valueOf_name()->as_C_string(),
1189 sig->as_C_string());
1190 CHECK_JNI_EXCEPTION_(env, NULL);
1191 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1192 CHECK_JNI_EXCEPTION_(env, NULL);
1193 return result;
1194 }
1195
1196 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1197 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1198 }
1199 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1200 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1201 }
1202 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1203 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1204 }
1205 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1206 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1207 }*/
1208 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1209 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1210 }
1211
1212 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1213 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1214 const char* flag_name = env->GetStringUTFChars(name, NULL);
1215 CHECK_JNI_EXCEPTION_(env, NULL);
1216 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1217 env->ReleaseStringUTFChars(name, flag_name);
1218 return result;
1219 }
1220
1221 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1222 const JVMFlag* flag = getVMFlag(thread, env, name);
1223 return (flag != NULL) && flag->is_constant_in_binary();
1224 WB_END
1225
1226 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1227 const JVMFlag* flag = getVMFlag(thread, env, name);
1228 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1229 WB_END
1230
1231 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1232 bool result;
1233 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1234 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1235 return booleanBox(thread, env, result);
1236 }
1237 return NULL;
1238 WB_END
1239
1240 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1241 int result;
1242 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1243 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1244 return longBox(thread, env, result);
1245 }
1246 return NULL;
1247 WB_END
1248
1249 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1250 uint result;
1251 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1252 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1253 return longBox(thread, env, result);
1254 }
1255 return NULL;
1256 WB_END
1257
1258 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1259 intx result;
1260 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1261 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1262 return longBox(thread, env, result);
1263 }
1264 return NULL;
1265 WB_END
1266
1267 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1268 uintx result;
1269 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1270 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1271 return longBox(thread, env, result);
1272 }
1273 return NULL;
1274 WB_END
1275
1276 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1277 uint64_t result;
1278 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1279 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1280 return longBox(thread, env, result);
1281 }
1282 return NULL;
1283 WB_END
1284
1285 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1286 size_t result;
1287 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1288 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1289 return longBox(thread, env, result);
1290 }
1291 return NULL;
1292 WB_END
1293
1294 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1295 double result;
1296 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1297 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1298 return doubleBox(thread, env, result);
1299 }
1300 return NULL;
1301 WB_END
1302
1303 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1304 ccstr ccstrResult;
1305 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1306 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1307 jstring result = env->NewStringUTF(ccstrResult);
1308 CHECK_JNI_EXCEPTION_(env, NULL);
1309 return result;
1310 }
1311 return NULL;
1312 WB_END
1313
1314 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1315 bool result = value == JNI_TRUE ? true : false;
1316 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1317 WB_END
1318
1319 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1320 int result = value;
1321 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1322 WB_END
1323
1324 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1325 uint result = value;
1326 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1327 WB_END
1328
1329 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1330 intx result = value;
1331 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1332 WB_END
1333
1334 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1335 uintx result = value;
1336 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1337 WB_END
1338
1339 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1340 uint64_t result = value;
1341 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1342 WB_END
1343
1344 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1345 size_t result = value;
1346 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1347 WB_END
1348
1349 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1350 double result = value;
1351 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1352 WB_END
1353
1354 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1355 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1356 const char* ccstrValue;
1357 if (value == NULL) {
1358 ccstrValue = NULL;
1359 }
1360 else {
1361 ccstrValue = env->GetStringUTFChars(value, NULL);
1362 CHECK_JNI_EXCEPTION(env);
1363 }
1364 ccstr ccstrResult = ccstrValue;
1365 bool needFree;
1366 {
1367 ThreadInVMfromNative ttvfn(thread); // back to VM
1368 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1369 }
1370 if (value != NULL) {
1371 env->ReleaseStringUTFChars(value, ccstrValue);
1372 }
1373 if (needFree) {
1374 FREE_C_HEAP_ARRAY(char, ccstrResult);
1375 }
1376 WB_END
1377
1378 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1379 WhiteBox::compilation_locked = true;
1380 WB_END
1381
1382 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1383 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1384 WhiteBox::compilation_locked = false;
1385 mo.notify_all();
1386 WB_END
1387
1388 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1389 // Force a code cache sweep and block until it finished
1390 NMethodSweeper::force_sweep();
1391 WB_END
1392
1393 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1394 ResourceMark rm(THREAD);
1395 int len;
1396 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1397 return (StringTable::lookup(name, len) != NULL);
1398 WB_END
1399
1400 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1401 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1402 Universe::heap()->collect(GCCause::_wb_full_gc);
1403 #if INCLUDE_G1GC
1404 if (UseG1GC) {
1405 // Needs to be cleared explicitly for G1
1406 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1407 }
1408 #endif // INCLUDE_G1GC
1409 WB_END
1410
1411 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1412 Universe::heap()->collect(GCCause::_wb_young_gc);
1413 WB_END
1414
1415 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1416 // static+volatile in order to force the read to happen
1417 // (not be eliminated by the compiler)
1418 static char c;
1419 static volatile char* p;
1420
1421 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1422 if (p == NULL) {
1423 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1424 }
1425
1426 c = *p;
1427 WB_END
1428
1429 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1430 const char* features = VM_Version::features_string();
1431 ThreadToNativeFromVM ttn(thread);
1432 jstring features_string = env->NewStringUTF(features);
1433
1434 CHECK_JNI_EXCEPTION_(env, NULL);
1435
1436 return features_string;
1437 WB_END
1438
1439 int WhiteBox::get_blob_type(const CodeBlob* code) {
1440 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1441 if (code->is_aot()) {
1442 return -1;
1443 }
1444 return CodeCache::get_code_heap(code)->code_blob_type();
1445 }
1446
1447 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1448 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1449 return CodeCache::get_code_heap(blob_type);
1450 }
1451
1452 struct CodeBlobStub {
1453 CodeBlobStub(const CodeBlob* blob) :
1454 name(os::strdup(blob->name())),
1455 size(blob->size()),
1456 blob_type(WhiteBox::get_blob_type(blob)),
1457 address((jlong) blob) { }
1458 ~CodeBlobStub() { os::free((void*) name); }
1459 const char* const name;
1460 const jint size;
1461 const jint blob_type;
1462 const jlong address;
1463 };
1464
1465 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1466 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1467 CHECK_JNI_EXCEPTION_(env, NULL);
1468 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1469
1470 jstring name = env->NewStringUTF(cb->name);
1471 CHECK_JNI_EXCEPTION_(env, NULL);
1472 env->SetObjectArrayElement(result, 0, name);
1473
1474 jobject obj = integerBox(thread, env, cb->size);
1475 CHECK_JNI_EXCEPTION_(env, NULL);
1476 env->SetObjectArrayElement(result, 1, obj);
1477
1478 obj = integerBox(thread, env, cb->blob_type);
1479 CHECK_JNI_EXCEPTION_(env, NULL);
1480 env->SetObjectArrayElement(result, 2, obj);
1481
1482 obj = longBox(thread, env, cb->address);
1483 CHECK_JNI_EXCEPTION_(env, NULL);
1484 env->SetObjectArrayElement(result, 3, obj);
1485
1486 return result;
1487 }
1488
1489 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1490 ResourceMark rm(THREAD);
1491 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1492 CHECK_JNI_EXCEPTION_(env, NULL);
1493 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1494 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1495 jobjectArray result = NULL;
1496 if (code == NULL) {
1497 return result;
1498 }
1499 int comp_level = code->comp_level();
1500 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1501
1502 ThreadToNativeFromVM ttn(thread);
1503 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1504 CHECK_JNI_EXCEPTION_(env, NULL);
1505 result = env->NewObjectArray(5, clazz, NULL);
1506 if (result == NULL) {
1507 return result;
1508 }
1509
1510 CodeBlobStub stub(code);
1511 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1512 CHECK_JNI_EXCEPTION_(env, NULL);
1513 env->SetObjectArrayElement(result, 0, codeBlob);
1514
1515 jobject level = integerBox(thread, env, comp_level);
1516 CHECK_JNI_EXCEPTION_(env, NULL);
1517 env->SetObjectArrayElement(result, 1, level);
1518
1519 jbyteArray insts = env->NewByteArray(insts_size);
1520 CHECK_JNI_EXCEPTION_(env, NULL);
1521 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1522 env->SetObjectArrayElement(result, 2, insts);
1523
1524 jobject id = integerBox(thread, env, code->compile_id());
1525 CHECK_JNI_EXCEPTION_(env, NULL);
1526 env->SetObjectArrayElement(result, 3, id);
1527
1528 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1529 CHECK_JNI_EXCEPTION_(env, NULL);
1530 env->SetObjectArrayElement(result, 4, entry_point);
1531
1532 return result;
1533 WB_END
1534
1535 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1536 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1537 BufferBlob* blob;
1538 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1539 if (full_size < size) {
1540 full_size += align_up(size - full_size, oopSize);
1541 }
1542 {
1543 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1544 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1545 if (blob != NULL) {
1546 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1547 }
1548 }
1549 // Track memory usage statistic after releasing CodeCache_lock
1550 MemoryService::track_code_cache_memory_usage();
1551 return blob;
1552 }
1553
1554 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1555 if (size < 0) {
1556 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1557 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1558 }
1559 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1560 WB_END
1561
1562 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1563 if (addr == 0) {
1564 return;
1565 }
1566 BufferBlob::free((BufferBlob*) addr);
1567 WB_END
1568
1569 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1570 ResourceMark rm;
1571 GrowableArray<CodeBlobStub*> blobs;
1572 {
1573 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1574 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1575 if (heap == NULL) {
1576 return NULL;
1577 }
1578 for (CodeBlob* cb = (CodeBlob*) heap->first();
1579 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1580 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1581 new (stub) CodeBlobStub(cb);
1582 blobs.append(stub);
1583 }
1584 }
1585 ThreadToNativeFromVM ttn(thread);
1586 jobjectArray result = NULL;
1587 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1588 CHECK_JNI_EXCEPTION_(env, NULL);
1589 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1590 CHECK_JNI_EXCEPTION_(env, NULL);
1591 if (result == NULL) {
1592 return result;
1593 }
1594 int i = 0;
1595 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1596 it != blobs.end(); ++it) {
1597 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1598 CHECK_JNI_EXCEPTION_(env, NULL);
1599 env->SetObjectArrayElement(result, i, obj);
1600 CHECK_JNI_EXCEPTION_(env, NULL);
1601 ++i;
1602 }
1603 return result;
1604 WB_END
1605
1606 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1607 return CompileBroker::get_compilation_activity_mode();
1608 WB_END
1609
1610 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1611 if (addr == 0) {
1612 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1613 "WB_GetCodeBlob: addr is null");
1614 }
1615 ThreadToNativeFromVM ttn(thread);
1616 CodeBlobStub stub((CodeBlob*) addr);
1617 return codeBlob2objectArray(thread, env, &stub);
1618 WB_END
1619
1620 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1621 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1622 CHECK_JNI_EXCEPTION_(env, 0);
1623 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1624 return (jlong) mh->method_data();
1625 WB_END
1626
1627 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1628 return (jlong) Thread::current()->stack_size();
1629 WB_END
1630
1631 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1632 JavaThread* t = JavaThread::current();
1633 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1634 WB_END
1635
1636
1637 int WhiteBox::array_bytes_to_length(size_t bytes) {
1638 return Array<u1>::bytes_to_length(bytes);
1639 }
1640
1641 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1642 if (size < 0) {
1643 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1644 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1645 }
1646
1647 oop class_loader_oop = JNIHandles::resolve(class_loader);
1648 ClassLoaderData* cld = class_loader_oop != NULL
1649 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1650 : ClassLoaderData::the_null_class_loader_data();
1651
1652 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1653
1654 return (jlong)(uintptr_t)metadata;
1655 WB_END
1656
1657 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1658 oop class_loader_oop = JNIHandles::resolve(class_loader);
1659 ClassLoaderData* cld = class_loader_oop != NULL
1660 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1661 : ClassLoaderData::the_null_class_loader_data();
1662
1663 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1664 WB_END
1665
1666 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1667 jstring version, jstring location, jobjectArray packages))
1668 ResourceMark rm(THREAD);
1669
1670 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1671 objArrayHandle packages_h(THREAD, packages_oop);
1672 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1673
1674 char** pkgs = NULL;
1675 if (num_packages > 0) {
1676 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1677 for (int x = 0; x < num_packages; x++) {
1678 oop pkg_str = packages_h->obj_at(x);
1679 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1680 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1681 err_msg("Bad package name"));
1682 }
1683 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1684 }
1685 }
1686 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1687 WB_END
1688
1689 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1690 ResourceMark rm(THREAD);
1691 char* package_name = NULL;
1692 if (package != NULL) {
1693 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1694 }
1695 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1696 WB_END
1697
1698 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1699 ResourceMark rm(THREAD);
1700 char* package_name = NULL;
1701 if (package != NULL) {
1702 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1703 }
1704 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1705 WB_END
1706
1707 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1708 ResourceMark rm(THREAD);
1709 char* package_name = NULL;
1710 if (package != NULL) {
1711 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1712 }
1713 Modules::add_module_exports(module, package_name, NULL, CHECK);
1714 WB_END
1715
1716 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1717 Modules::add_reads_module(from_module, source_module, CHECK);
1718 WB_END
1719
1720 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1721 if (inc < 0) {
1722 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1723 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1724 }
1725
1726 jlong max_size_t = (jlong) ((size_t) -1);
1727 if (inc > max_size_t) {
1728 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1729 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1730 }
1731
1732 size_t new_cap_until_GC = 0;
1733 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1734 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1735 if (!success) {
1736 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1737 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1738 "due to contention with another thread");
1739 }
1740 return (jlong) new_cap_until_GC;
1741 WB_END
1742
1743 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1744 return (jlong) MetaspaceGC::capacity_until_GC();
1745 WB_END
1746
1747 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1748 return MetaspaceGC::should_concurrent_collect();
1749 WB_END
1750
1751 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1752 return (jlong)Metaspace::reserve_alignment();
1753 WB_END
1754
1755 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1756 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1757 Monitor::_safepoint_check_always :
1758 Monitor::_safepoint_check_never;
1759 Monitor::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ?
1760 Monitor::_no_safepoint_check_flag :
1761 Monitor::_safepoint_check_flag;
1762 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1763 sfpt_check_attempted);
1764 WB_END
1765
1766 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1767 oop obj_oop = JNIHandles::resolve(obj);
1768 return (jboolean) obj_oop->mark().has_monitor();
1769 WB_END
1770
1771 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1772 VM_ForceSafepoint force_safepoint_op;
1773 VMThread::execute(&force_safepoint_op);
1774 WB_END
1775
1776 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1777 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1778 return (jlong) ik->constants();
1779 WB_END
1780
1781 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1782 return ConstantPool::CPCACHE_INDEX_TAG;
1783 WB_END
1784
1785 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1786 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1787 ConstantPool* cp = ik->constants();
1788 if (cp->cache() == NULL) {
1789 return -1;
1790 }
1791 return cp->cache()->length();
1792 WB_END
1793
1794 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1795 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1796 ConstantPool* cp = ik->constants();
1797 if (cp->cache() == NULL) {
1798 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1799 }
1800 jint cpci = index;
1801 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1802 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1803 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1804 }
1805 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1806 return cpi;
1807 WB_END
1808
1809 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1810 return ConstantPool::encode_invokedynamic_index(index);
1811 WB_END
1812
1813 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1814 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1815 VMThread::execute(&clear_ics);
1816 WB_END
1817
1818 template <typename T>
1819 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1820 assert(value != NULL, "sanity");
1821 if (method == NULL || name == NULL) {
1822 return false;
1823 }
1824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1825 CHECK_JNI_EXCEPTION_(env, false);
1826 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1827 // can't be in VM when we call JNI
1828 ThreadToNativeFromVM ttnfv(thread);
1829 const char* flag_name = env->GetStringUTFChars(name, NULL);
1830 CHECK_JNI_EXCEPTION_(env, false);
1831 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1832 env->ReleaseStringUTFChars(name, flag_name);
1833 return result;
1834 }
1835
1836 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1837 bool result;
1838 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1839 // can't be in VM when we call JNI
1840 ThreadToNativeFromVM ttnfv(thread);
1841 return booleanBox(thread, env, result);
1842 }
1843 return NULL;
1844 WB_END
1845
1846 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1847 intx result;
1848 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1849 // can't be in VM when we call JNI
1850 ThreadToNativeFromVM ttnfv(thread);
1851 return longBox(thread, env, result);
1852 }
1853 return NULL;
1854 WB_END
1855
1856 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1857 uintx result;
1858 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1859 // can't be in VM when we call JNI
1860 ThreadToNativeFromVM ttnfv(thread);
1861 return longBox(thread, env, result);
1862 }
1863 return NULL;
1864 WB_END
1865
1866 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1867 double result;
1868 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1869 // can't be in VM when we call JNI
1870 ThreadToNativeFromVM ttnfv(thread);
1871 return doubleBox(thread, env, result);
1872 }
1873 return NULL;
1874 WB_END
1875
1876 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1877 ccstr ccstrResult;
1878 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1879 // can't be in VM when we call JNI
1880 ThreadToNativeFromVM ttnfv(thread);
1881 jstring result = env->NewStringUTF(ccstrResult);
1882 CHECK_JNI_EXCEPTION_(env, NULL);
1883 return result;
1884 }
1885 return NULL;
1886 WB_END
1887
1888 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1889 const char* p = Arguments::get_default_shared_archive_path();
1890 ThreadToNativeFromVM ttn(thread);
1891 jstring path_string = env->NewStringUTF(p);
1892
1893 CHECK_JNI_EXCEPTION_(env, NULL);
1894
1895 return path_string;
1896 WB_END
1897
1898 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1899 return UseSharedSpaces;
1900 WB_END
1901
1902 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
1903 return FileMapInfo::memory_mapping_failed();
1904 WB_END
1905
1906 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1907 oop obj_oop = JNIHandles::resolve(obj);
1908 return HeapShared::is_archived_object(obj_oop);
1909 WB_END
1910
1911 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1912 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1913 WB_END
1914
1915 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1916 return !HeapShared::closed_archive_heap_region_mapped();
1917 WB_END
1918
1919 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1920 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1921 if (k->is_instance_klass()) {
1922 InstanceKlass *ik = InstanceKlass::cast(k);
1923 ConstantPool *cp = ik->constants();
1924 objArrayOop refs = cp->resolved_references();
1925 return (jobject)JNIHandles::make_local(env, refs);
1926 } else {
1927 return NULL;
1928 }
1929 WB_END
1930
1931 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
1932 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1933 if (!k->is_instance_klass()) {
1934 return;
1935 }
1936 InstanceKlass *ik = InstanceKlass::cast(k);
1937 ik->link_class(THREAD); // may throw verification error
1938 WB_END
1939
1940 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1941 return HeapShared::open_archive_heap_region_mapped();
1942 WB_END
1943
1944 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1945 #if INCLUDE_CDS
1946 # ifdef _LP64
1947 if (!UseCompressedOops || !UseCompressedClassPointers) {
1948 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1949 return false;
1950 }
1951 # endif // _LP64
1952 return true;
1953 #else
1954 return false;
1955 #endif // INCLUDE_CDS
1956 WB_END
1957
1958 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1959 return HeapShared::is_heap_object_archiving_allowed();
1960 WB_END
1961
1962
1963 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1964 #if INCLUDE_JFR
1965 return true;
1966 #else
1967 return false;
1968 #endif // INCLUDE_JFR
1969 WB_END
1970
1971 #if INCLUDE_CDS
1972
1973 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1974 ResourceMark rm;
1975 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1976 int result = CDSOffsets::find_offset(c_name);
1977 return (jint)result;
1978 WB_END
1979
1980 #endif // INCLUDE_CDS
1981
1982 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1983 class TraceSelfClosure : public ThreadClosure {
1984 jint _num_threads_completed;
1985
1986 void do_thread(Thread* th) {
1987 assert(th->is_Java_thread(), "sanity");
1988 JavaThread* jt = (JavaThread*)th;
1989 ResourceMark rm;
1990
1991 jt->print_on(tty);
1992 jt->print_stack_on(tty);
1993 tty->cr();
1994 Atomic::inc(&_num_threads_completed);
1995 }
1996
1997 public:
1998 TraceSelfClosure() : _num_threads_completed(0) {}
1999
2000 jint num_threads_completed() const { return _num_threads_completed; }
2001 };
2002 TraceSelfClosure tsc;
2003
2004 if (all_threads) {
2005 Handshake::execute(&tsc);
2006 } else {
2007 oop thread_oop = JNIHandles::resolve(thread_handle);
2008 if (thread_oop != NULL) {
2009 JavaThread* target = java_lang_Thread::thread(thread_oop);
2010 Handshake::execute(&tsc, target);
2011 }
2012 }
2013 return tsc.num_threads_completed();
2014 WB_END
2015
2016 //Some convenience methods to deal with objects from java
2017 int WhiteBox::offset_for_field(const char* field_name, oop object,
2018 Symbol* signature_symbol) {
2019 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2020 Thread* THREAD = Thread::current();
2021
2022 //Get the class of our object
2023 Klass* arg_klass = object->klass();
2024 //Turn it into an instance-klass
2025 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2026
2027 //Create symbols to look for in the class
2028 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2029
2030 //To be filled in with an offset of the field we're looking for
2031 fieldDescriptor fd;
2032
2033 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2034 if (res == NULL) {
2035 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2036 name_symbol->as_C_string());
2037 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2038 }
2039
2040 //fetch the field at the offset we've found
2041 int dest_offset = fd.offset();
2042
2043 return dest_offset;
2044 }
2045
2046
2047 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2048 int offset = offset_for_field(field_name, object,
2049 vmSymbols::string_signature());
2050 oop string = object->obj_field(offset);
2051 if (string == NULL) {
2052 return NULL;
2053 }
2054 const char* ret = java_lang_String::as_utf8_string(string);
2055 return ret;
2056 }
2057
2058 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2059 int offset =
2060 offset_for_field(field_name, object, vmSymbols::bool_signature());
2061 bool ret = (object->bool_field(offset) == JNI_TRUE);
2062 return ret;
2063 }
2064
2065 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2066 ResourceMark rm;
2067 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2068
2069 // one by one registration natives for exception catching
2070 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2071 CHECK_JNI_EXCEPTION(env);
2072 for (int i = 0, n = method_count; i < n; ++i) {
2073 // Skip dummy entries
2074 if (method_array[i].fnPtr == NULL) continue;
2075 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2076 jthrowable throwable_obj = env->ExceptionOccurred();
2077 if (throwable_obj != NULL) {
2078 env->ExceptionClear();
2079 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2080 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2081 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2082 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
2083 method_array[i].name, method_array[i].signature);
2084 }
2085 } else {
2086 // Registration failed unexpectedly.
2087 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
2088 method_array[i].name, method_array[i].signature);
2089 env->UnregisterNatives(wbclass);
2090 break;
2091 }
2092 }
2093 }
2094 }
2095
2096 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2097 // can't be in VM when we call JNI
2098 ThreadToNativeFromVM ttnfv(thread);
2099 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2100 CHECK_JNI_EXCEPTION_(env, 0);
2101 int ret;
2102 {
2103 ThreadInVMfromNative ttvfn(thread); // back to VM
2104 ret = DirectivesParser::parse_string(dir, tty);
2105 }
2106 env->ReleaseStringUTFChars(compDirect, dir);
2107 // -1 for error parsing directive. Return 0 as number of directives added.
2108 if (ret == -1) {
2109 ret = 0;
2110 }
2111 return (jint) ret;
2112 WB_END
2113
2114 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2115 DirectivesStack::pop(count);
2116 WB_END
2117
2118 // Checks that the library libfile has the noexecstack bit set.
2119 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2120 jboolean ret = false;
2121 #ifdef LINUX
2122 // Can't be in VM when we call JNI.
2123 ThreadToNativeFromVM ttnfv(thread);
2124 const char* lf = env->GetStringUTFChars(libfile, NULL);
2125 CHECK_JNI_EXCEPTION_(env, 0);
2126 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2127 env->ReleaseStringUTFChars(libfile, lf);
2128 #endif
2129 return ret;
2130 WB_END
2131
2132 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2133 LINUX_ONLY(return OSContainer::is_containerized();)
2134 return false;
2135 WB_END
2136
2137 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2138 os::print_os_info(tty);
2139 WB_END
2140
2141 // Elf decoder
2142 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2143 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2144 ElfFile::_do_not_cache_elf_section = true;
2145 #endif
2146 WB_END
2147
2148 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2149 return (jlong) ResolvedMethodTable::items_count();
2150 WB_END
2151
2152 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2153 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2154 WB_END
2155
2156 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o))
2157 jint result = 0;
2158 #if INCLUDE_AOT
2159 result = (jint) AOTLoader::heaps_count();
2160 #endif
2161 return result;
2162 WB_END
2163
2164 #define CC (char*)
2165
2166 static JNINativeMethod methods[] = {
2167 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2168 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2169 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2170 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2171 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2172 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2173 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2174 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2175 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2176 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2177 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2178 {CC"parseCommandLine0",
2179 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2180 (void*) &WB_ParseCommandLine
2181 },
2182 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2183 (void*)&WB_AddToBootstrapClassLoaderSearch},
2184 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2185 (void*)&WB_AddToSystemClassLoaderSearch},
2186 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2187 (void*)&WB_GetCompressedOopsMaxHeapSize},
2188 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2189 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2190 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2191 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2192 #if INCLUDE_CDS
2193 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2194 #endif
2195 #if INCLUDE_G1GC
2196 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2197 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2198 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2199 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2200 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2201 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2202 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2203 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2204 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2205 (void*)&WB_G1AuxiliaryMemoryUsage },
2206 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2207 #endif // INCLUDE_G1GC
2208 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
2209 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart },
2210 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd },
2211 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart },
2212 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd },
2213 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
2214 #if INCLUDE_PARALLELGC
2215 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2216 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2217 #endif
2218 #if INCLUDE_NMT
2219 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2220 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2221 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2222 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2223 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2224 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2225 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2226 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2227 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2228 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2229 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2230 #endif // INCLUDE_NMT
2231 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2232 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2233 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2234 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2235 (void*)&WB_DeoptimizeMethod },
2236 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2237 (void*)&WB_IsMethodCompiled },
2238 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2239 (void*)&WB_IsMethodCompilable},
2240 {CC"isMethodQueuedForCompilation0",
2241 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2242 {CC"isIntrinsicAvailable0",
2243 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2244 (void*)&WB_IsIntrinsicAvailable},
2245 {CC"makeMethodNotCompilable0",
2246 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2247 {CC"testSetDontInlineMethod0",
2248 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2249 {CC"getMethodCompilationLevel0",
2250 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2251 {CC"getMethodEntryBci0",
2252 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2253 {CC"getCompileQueueSize",
2254 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2255 {CC"testSetForceInlineMethod0",
2256 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2257 {CC"enqueueMethodForCompilation0",
2258 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2259 {CC"enqueueInitializerForCompilation0",
2260 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2261 {CC"markMethodProfiled",
2262 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2263 {CC"clearMethodState0",
2264 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2265 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2266 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2267 {CC"matchesMethod",
2268 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2269 (void*)&WB_MatchesMethod},
2270 {CC"matchesInline",
2271 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2272 (void*)&WB_MatchesInline},
2273 {CC"shouldPrintAssembly",
2274 CC"(Ljava/lang/reflect/Executable;I)Z",
2275 (void*)&WB_ShouldPrintAssembly},
2276
2277 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2278 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2279 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2280 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2281 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2282 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2283 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2284 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2285 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2286 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2287 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2288 (void*)&WB_SetStringVMFlag},
2289 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2290 (void*)&WB_GetBooleanVMFlag},
2291 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2292 (void*)&WB_GetIntVMFlag},
2293 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2294 (void*)&WB_GetUintVMFlag},
2295 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2296 (void*)&WB_GetIntxVMFlag},
2297 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2298 (void*)&WB_GetUintxVMFlag},
2299 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2300 (void*)&WB_GetUint64VMFlag},
2301 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2302 (void*)&WB_GetSizeTVMFlag},
2303 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2304 (void*)&WB_GetDoubleVMFlag},
2305 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2306 (void*)&WB_GetStringVMFlag},
2307 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2308 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2309 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2310 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2311 {CC"allocateMetaspace",
2312 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2313 {CC"freeMetaspace",
2314 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2315 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2316 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2317 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2318 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2319 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2320 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2321 (void*)&WB_GetNMethod },
2322 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2323 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2324 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2325 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2326 {CC"getCompilationActivityMode",
2327 CC"()I", (void*)&WB_GetCompilationActivityMode},
2328 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2329 (void*)&WB_GetMethodData },
2330 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2331 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2332 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2333 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2334 (void*)&WB_DefineModule },
2335 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2336 (void*)&WB_AddModuleExports },
2337 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2338 (void*)&WB_AddReadsModule },
2339 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2340 (void*)&WB_AddModuleExportsToAllUnnamed },
2341 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2342 (void*)&WB_AddModuleExportsToAll },
2343 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2344 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2345 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2346 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2347 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2348 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2349 {CC"remapInstructionOperandFromCPCache0",
2350 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2351 {CC"encodeConstantPoolIndyIndex0",
2352 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2353 {CC"getMethodBooleanOption",
2354 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2355 (void*)&WB_GetMethodBooleaneOption},
2356 {CC"getMethodIntxOption",
2357 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2358 (void*)&WB_GetMethodIntxOption},
2359 {CC"getMethodUintxOption",
2360 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2361 (void*)&WB_GetMethodUintxOption},
2362 {CC"getMethodDoubleOption",
2363 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2364 (void*)&WB_GetMethodDoubleOption},
2365 {CC"getMethodStringOption",
2366 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2367 (void*)&WB_GetMethodStringOption},
2368 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2369 (void*)&WB_GetDefaultArchivePath},
2370 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2371 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2372 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2373 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2374 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2375 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2376 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2377 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2378 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2379 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2380 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2381
2382 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2383 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2384 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2385 (void*)&WB_AddCompilerDirective },
2386 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2387 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2388 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2389 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2390 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2391 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2392 (void*)&WB_RequestConcurrentGCPhase},
2393 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2394 (void*)&WB_CheckLibSpecifiesNoexecstack},
2395 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2396 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2397 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2398 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2399 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2400 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount },
2401 };
2402
2403
2404 #undef CC
2405
2406 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2407 {
2408 if (WhiteBoxAPI) {
2409 // Make sure that wbclass is loaded by the null classloader
2410 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2411 Handle loader(THREAD, ik->class_loader());
2412 if (loader.is_null()) {
2413 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2414 WhiteBox::set_used();
2415 }
2416 }
2417 }
2418 JVM_END