1 /*
2 * Copyright (c) 2012, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/classLoaderDataGraph.hpp"
30 #include "classfile/javaClasses.inline.hpp"
31 #include "classfile/modules.hpp"
32 #include "classfile/protectionDomainCache.hpp"
33 #include "classfile/stringTable.hpp"
34 #include "classfile/symbolTable.hpp"
35 #include "code/codeCache.hpp"
36 #include "compiler/compilationPolicy.hpp"
37 #include "compiler/methodMatcher.hpp"
38 #include "compiler/directivesParser.hpp"
39 #include "gc/shared/concurrentGCBreakpoints.hpp"
40 #include "gc/shared/gcConfig.hpp"
41 #include "gc/shared/genArguments.hpp"
42 #include "gc/shared/genCollectedHeap.hpp"
43 #include "jvmtifiles/jvmtiEnv.hpp"
44 #include "memory/filemap.hpp"
45 #include "memory/heapShared.inline.hpp"
46 #include "memory/metaspaceShared.hpp"
47 #include "memory/metadataFactory.hpp"
48 #include "memory/iterator.hpp"
49 #include "memory/resourceArea.hpp"
50 #include "memory/universe.hpp"
51 #include "memory/oopFactory.hpp"
52 #include "oops/array.hpp"
53 #include "oops/compressedOops.hpp"
54 #include "oops/constantPool.inline.hpp"
55 #include "oops/method.inline.hpp"
56 #include "oops/objArrayKlass.hpp"
57 #include "oops/objArrayOop.inline.hpp"
58 #include "oops/oop.inline.hpp"
59 #include "oops/typeArrayOop.inline.hpp"
60 #include "prims/resolvedMethodTable.hpp"
61 #include "prims/wbtestmethods/parserTests.hpp"
62 #include "prims/whitebox.inline.hpp"
63 #include "runtime/arguments.hpp"
64 #include "runtime/atomic.hpp"
65 #include "runtime/deoptimization.hpp"
66 #include "runtime/fieldDescriptor.inline.hpp"
67 #include "runtime/flags/jvmFlag.hpp"
68 #include "runtime/frame.inline.hpp"
69 #include "runtime/handles.inline.hpp"
70 #include "runtime/handshake.hpp"
71 #include "runtime/interfaceSupport.inline.hpp"
72 #include "runtime/javaCalls.hpp"
73 #include "runtime/jniHandles.inline.hpp"
74 #include "runtime/os.hpp"
75 #include "runtime/sweeper.hpp"
76 #include "runtime/synchronizer.hpp"
77 #include "runtime/thread.hpp"
78 #include "runtime/threadSMR.hpp"
79 #include "runtime/vm_version.hpp"
80 #include "services/memoryService.hpp"
81 #include "utilities/align.hpp"
82 #include "utilities/debug.hpp"
83 #include "utilities/elfFile.hpp"
84 #include "utilities/exceptions.hpp"
85 #include "utilities/macros.hpp"
86 #if INCLUDE_CDS
87 #include "prims/cdsoffsets.hpp"
88 #endif // INCLUDE_CDS
89 #if INCLUDE_G1GC
90 #include "gc/g1/g1Arguments.hpp"
91 #include "gc/g1/g1CollectedHeap.inline.hpp"
92 #include "gc/g1/g1ConcurrentMark.hpp"
93 #include "gc/g1/g1ConcurrentMarkThread.hpp"
94 #include "gc/g1/heapRegionRemSet.hpp"
95 #include "gc/g1/heterogeneousHeapRegionManager.hpp"
96 #endif // INCLUDE_G1GC
97 #if INCLUDE_PARALLELGC
98 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
99 #endif // INCLUDE_PARALLELGC
100 #if INCLUDE_NMT
101 #include "services/mallocSiteTable.hpp"
102 #include "services/memTracker.hpp"
103 #include "utilities/nativeCallStack.hpp"
104 #endif // INCLUDE_NMT
105 #if INCLUDE_AOT
106 #include "aot/aotLoader.hpp"
107 #endif // INCLUDE_AOT
108
109 #ifdef LINUX
110 #include "osContainer_linux.hpp"
111 #include "cgroupSubsystem_linux.hpp"
112 #endif
113
114 #define SIZE_T_MAX_VALUE ((size_t) -1)
115
116 #define CHECK_JNI_EXCEPTION_(env, value) \
117 do { \
118 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
119 THREAD->clear_pending_jni_exception_check(); \
120 if (HAS_PENDING_EXCEPTION) { \
121 return(value); \
122 } \
123 } while (0)
124
125 #define CHECK_JNI_EXCEPTION(env) \
126 do { \
127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
128 THREAD->clear_pending_jni_exception_check(); \
129 if (HAS_PENDING_EXCEPTION) { \
130 return; \
131 } \
132 } while (0)
133
134 bool WhiteBox::_used = false;
135 volatile bool WhiteBox::compilation_locked = false;
136
137 class VM_WhiteBoxOperation : public VM_Operation {
138 public:
139 VM_WhiteBoxOperation() { }
140 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
141 bool allow_nested_vm_operations() const { return true; }
142 };
143
144
145 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
146 return (jlong)(void*)JNIHandles::resolve(obj);
147 WB_END
148
149 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
150 return heapOopSize;
151 WB_END
152
153 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
154 return os::vm_page_size();
155 WB_END
156
157 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
158 return os::vm_allocation_granularity();
159 WB_END
160
161 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
162 return os::large_page_size();
163 WB_END
164
165 class WBIsKlassAliveClosure : public LockedClassesDo {
166 Symbol* _name;
167 int _count;
168 public:
169 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
170
171 void do_klass(Klass* k) {
172 Symbol* ksym = k->name();
173 if (ksym->fast_compare(_name) == 0) {
174 _count++;
175 }
176 }
177
178 int count() const {
179 return _count;
180 }
181 };
182
183 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
184 oop h_name = JNIHandles::resolve(name);
185 if (h_name == NULL) return false;
186 Symbol* sym = java_lang_String::as_symbol(h_name);
187 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
188
189 WBIsKlassAliveClosure closure(sym);
190 ClassLoaderDataGraph::classes_do(&closure);
191
192 // Return the count of alive classes with this name.
193 return closure.count();
194 WB_END
195
196 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
197 oop h_name = JNIHandles::resolve(name);
198 if (h_name == NULL) return false;
199 Symbol* sym = java_lang_String::as_symbol(h_name);
200 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
201 return (jint)sym->refcount();
202 WB_END
203
204
205 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
206 #if INCLUDE_JVMTI
207 ResourceMark rm;
208 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
209 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
210 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
211 assert(err == JVMTI_ERROR_NONE, "must not fail");
212 #endif
213 }
214 WB_END
215
216 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
217 #if INCLUDE_JVMTI
218 ResourceMark rm;
219 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
220 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
221 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
222 assert(err == JVMTI_ERROR_NONE, "must not fail");
223 #endif
224 }
225 WB_END
226
227
228 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
229 return (jlong)Arguments::max_heap_for_compressed_oops();
230 }
231 WB_END
232
233 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
234 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
235 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
236 MinHeapSize,
237 InitialHeapSize,
238 MaxHeapSize,
239 SpaceAlignment,
240 HeapAlignment);
241 }
242 WB_END
243
244 #ifndef PRODUCT
245 // Forward declaration
246 void TestReservedSpace_test();
247 void TestReserveMemorySpecial_test();
248 void TestVirtualSpace_test();
249 #endif
250
251 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
252 #ifndef PRODUCT
253 TestReservedSpace_test();
254 TestReserveMemorySpecial_test();
255 TestVirtualSpace_test();
256 #endif
257 WB_END
258
259 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
260 size_t granularity = os::vm_allocation_granularity();
261 ReservedHeapSpace rhs(100 * granularity, granularity, false);
262 VirtualSpace vs;
263 vs.initialize(rhs, 50 * granularity);
264
265 // Check if constraints are complied
266 if (!( UseCompressedOops && rhs.base() != NULL &&
267 CompressedOops::base() != NULL &&
268 CompressedOops::use_implicit_null_checks() )) {
269 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
270 "\tUseCompressedOops is %d\n"
271 "\trhs.base() is " PTR_FORMAT "\n"
272 "\tCompressedOops::base() is " PTR_FORMAT "\n"
273 "\tCompressedOops::use_implicit_null_checks() is %d",
274 UseCompressedOops,
275 p2i(rhs.base()),
276 p2i(CompressedOops::base()),
277 CompressedOops::use_implicit_null_checks());
278 return;
279 }
280 tty->print_cr("Reading from no access area... ");
281 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
282 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
283 WB_END
284
285 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
286 size_t magnitude, size_t iterations) {
287 size_t granularity = os::vm_allocation_granularity();
288 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
289 VirtualSpace vs;
290 if (!vs.initialize(rhs, 0)) {
291 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
292 return 3;
293 }
294
295 int seed = os::random();
296 tty->print_cr("Random seed is %d", seed);
297 os::init_random(seed);
298
299 for (size_t i = 0; i < iterations; i++) {
300
301 // Whether we will shrink or grow
302 bool shrink = os::random() % 2L == 0;
303
304 // Get random delta to resize virtual space
305 size_t delta = (size_t)os::random() % magnitude;
306
307 // If we are about to shrink virtual space below zero, then expand instead
308 if (shrink && vs.committed_size() < delta) {
309 shrink = false;
310 }
311
312 // Resizing by delta
313 if (shrink) {
314 vs.shrink_by(delta);
315 } else {
316 // If expanding fails expand_by will silently return false
317 vs.expand_by(delta, true);
318 }
319 }
320 return 0;
321 }
322
323 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
324 jlong reserved_space_size, jlong magnitude, jlong iterations))
325 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
326 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
327 iterations);
328 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
329 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
330 return 1;
331 }
332
333 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
334 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
335 if (sizeof(size_t) < sizeof(jlong)) {
336 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
337 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
338 || iterations > size_t_max_value) {
339 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
340 return 2;
341 }
342 }
343
344 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
345 (size_t) magnitude, (size_t) iterations);
346 WB_END
347
348 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
349 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
350 WB_END
351
352 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
353 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
354 WB_END
355
356 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
357 return GCConfig::is_gc_selected_ergonomically();
358 WB_END
359
360 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
361 oop p = JNIHandles::resolve(obj);
362 #if INCLUDE_G1GC
363 if (UseG1GC) {
364 G1CollectedHeap* g1h = G1CollectedHeap::heap();
365 const HeapRegion* hr = g1h->heap_region_containing(p);
366 if (hr == NULL) {
367 return false;
368 }
369 return !(hr->is_young());
370 }
371 #endif
372 #if INCLUDE_PARALLELGC
373 if (UseParallelGC) {
374 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
375 return !psh->is_in_young(p);
376 }
377 #endif
378 #if INCLUDE_ZGC
379 if (UseZGC) {
380 return Universe::heap()->is_in(p);
381 }
382 #endif
383 GenCollectedHeap* gch = GenCollectedHeap::heap();
384 return !gch->is_in_young(p);
385 WB_END
386
387 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
388 oop p = JNIHandles::resolve(obj);
389 return Universe::heap()->obj_size(p) * HeapWordSize;
390 WB_END
391
392 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
393 return (jlong)SpaceAlignment;
394 WB_END
395
396 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
397 return (jlong)HeapAlignment;
398 WB_END
399
400 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
401 return Universe::heap()->supports_concurrent_gc_breakpoints();
402 WB_END
403
404 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
405 ConcurrentGCBreakpoints::acquire_control();
406 WB_END
407
408 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
409 ConcurrentGCBreakpoints::release_control();
410 WB_END
411
412 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
413 ConcurrentGCBreakpoints::run_to_idle();
414 WB_END
415
416 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
417 Handle h_name(THREAD, JNIHandles::resolve(at));
418 ResourceMark rm;
419 const char* c_name = java_lang_String::as_utf8_string(h_name());
420 return ConcurrentGCBreakpoints::run_to(c_name);
421 WB_END
422
423 #if INCLUDE_G1GC
424
425 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
426 if (UseG1GC) {
427 G1CollectedHeap* g1h = G1CollectedHeap::heap();
428 oop result = JNIHandles::resolve(obj);
429 const HeapRegion* hr = g1h->heap_region_containing(result);
430 return hr->is_humongous();
431 }
432 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
433 WB_END
434
435 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
436 if (UseG1GC) {
437 G1CollectedHeap* g1h = G1CollectedHeap::heap();
438 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
439 return hr->is_humongous();
440 }
441 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
442 WB_END
443
444 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
445 if (UseG1GC) {
446 G1CollectedHeap* g1h = G1CollectedHeap::heap();
447 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
448 return hr->is_free();
449 }
450 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
451 WB_END
452
453 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
454 if (UseG1GC) {
455 G1CollectedHeap* g1h = G1CollectedHeap::heap();
456 size_t nr = g1h->max_regions();
457 return (jlong)nr;
458 }
459 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
460 WB_END
461
462 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
463 if (UseG1GC) {
464 G1CollectedHeap* g1h = G1CollectedHeap::heap();
465 size_t nr = g1h->num_free_regions();
466 return (jlong)nr;
467 }
468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
469 WB_END
470
471 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
472 if (UseG1GC) {
473 G1CollectedHeap* g1h = G1CollectedHeap::heap();
474 return g1h->concurrent_mark()->cm_thread()->during_cycle();
475 }
476 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
477 WB_END
478
479 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
480 if (UseG1GC) {
481 if (AsyncDeflateIdleMonitors) {
482 // AsyncDeflateIdleMonitors needs to know when System.gc() or
483 // the equivalent is called so any special clean up can be done
484 // at a safepoint, e.g., TestHumongousClassLoader.java.
485 ObjectSynchronizer::set_is_special_deflation_requested(true);
486 }
487 G1CollectedHeap* g1h = G1CollectedHeap::heap();
488 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
489 g1h->collect(GCCause::_wb_conc_mark);
490 return true;
491 }
492 return false;
493 }
494 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
495 WB_END
496
497 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
498 if (UseG1GC) {
499 return (jint)HeapRegion::GrainBytes;
500 }
501 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
502 WB_END
503
504 #endif // INCLUDE_G1GC
505
506 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
507 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o))
508 #if INCLUDE_G1GC
509 if (UseG1GC) {
510 G1CollectedHeap* g1h = G1CollectedHeap::heap();
511 if (g1h->is_heterogeneous_heap()) {
512 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram();
513 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
514 } else {
515 return (jlong)g1h->base();
516 }
517 }
518 #endif // INCLUDE_G1GC
519 #if INCLUDE_PARALLELGC
520 if (UseParallelGC) {
521 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
522 if (AllocateOldGenAt != NULL) {
523 MemRegion reserved = ps_heap->young_gen()->reserved();
524 return (jlong)reserved.start();
525 } else {
526 return (jlong)ps_heap->base();
527 }
528 }
529 #endif // INCLUDE_PARALLELGC
530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC");
531 WB_END
532
533 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o))
534 #if INCLUDE_G1GC
535 if (UseG1GC) {
536 G1CollectedHeap* g1h = G1CollectedHeap::heap();
537 if (g1h->is_heterogeneous_heap()) {
538 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram();
539 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
540 } else {
541 return (jlong)g1h->base() + G1Arguments::heap_max_size_bytes();
542 }
543 }
544 #endif // INCLUDE_G1GC
545 #if INCLUDE_PARALLELGC
546 if (UseParallelGC) {
547 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
548 if (AllocateOldGenAt != NULL) {
549 MemRegion reserved = ps_heap->young_gen()->reserved();
550 return (jlong)reserved.end();
551 } else {
552 return (jlong)ps_heap->reserved_region().end();
553 }
554 }
555 #endif // INCLUDE_PARALLELGC
556 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC");
557 WB_END
558
559 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o))
560 #if INCLUDE_G1GC
561 if (UseG1GC) {
562 G1CollectedHeap* g1h = G1CollectedHeap::heap();
563 if (g1h->is_heterogeneous_heap()) {
564 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
565 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
566 } else {
567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
568 }
569 }
570 #endif // INCLUDE_G1GC
571 #if INCLUDE_PARALLELGC
572 if (UseParallelGC) {
573 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
574 if (AllocateOldGenAt != NULL) {
575 MemRegion reserved = ps_heap->old_gen()->reserved();
576 return (jlong)reserved.start();
577 } else {
578 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
579 }
580 }
581 #endif // INCLUDE_PARALLELGC
582 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC");
583 WB_END
584
585 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o))
586 #if INCLUDE_G1GC
587 if (UseG1GC) {
588 G1CollectedHeap* g1h = G1CollectedHeap::heap();
589 if (g1h->is_heterogeneous_heap()) {
590 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
591 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
592 } else {
593 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
594 }
595 }
596 #endif // INCLUDE_G1GC
597 #if INCLUDE_PARALLELGC
598 if (UseParallelGC) {
599 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
600 if (AllocateOldGenAt != NULL) {
601 MemRegion reserved = ps_heap->old_gen()->reserved();
602 return (jlong)reserved.end();
603 } else {
604 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
605 }
606 }
607 #endif // INCLUDE_PARALLELGC
608 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC");
609 WB_END
610
611 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
612
613 #if INCLUDE_PARALLELGC
614
615 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
616 if (UseParallelGC) {
617 return GenAlignment;
618 }
619 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
620 WB_END
621
622 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
623 if (UseParallelGC) {
624 return GenAlignment;
625 }
626 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
627 WB_END
628
629 #endif // INCLUDE_PARALLELGC
630
631 #if INCLUDE_G1GC
632
633 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
634 if (UseG1GC) {
635 ResourceMark rm(THREAD);
636 G1CollectedHeap* g1h = G1CollectedHeap::heap();
637 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
638 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
639 return JNIHandles::make_local(env, h());
640 }
641 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
642 WB_END
643
644 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
645 if (UseG1GC) {
646 G1NUMA* numa = G1NUMA::numa();
647 return (jint)numa->num_active_nodes();
648 }
649 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
650 WB_END
651
652 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
653 if (UseG1GC) {
654 G1NUMA* numa = G1NUMA::numa();
655 int num_node_ids = (int)numa->num_active_nodes();
656 const int* node_ids = numa->node_ids();
657
658 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
659 for (int i = 0; i < num_node_ids; i++) {
660 result->int_at_put(i, (jint)node_ids[i]);
661 }
662 return (jintArray) JNIHandles::make_local(env, result);
663 }
664 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
665 WB_END
666
667 class OldRegionsLivenessClosure: public HeapRegionClosure {
668
669 private:
670 const int _liveness;
671 size_t _total_count;
672 size_t _total_memory;
673 size_t _total_memory_to_free;
674
675 public:
676 OldRegionsLivenessClosure(int liveness) :
677 _liveness(liveness),
678 _total_count(0),
679 _total_memory(0),
680 _total_memory_to_free(0) { }
681
682 size_t total_count() { return _total_count; }
683 size_t total_memory() { return _total_memory; }
684 size_t total_memory_to_free() { return _total_memory_to_free; }
685
686 bool do_heap_region(HeapRegion* r) {
687 if (r->is_old()) {
688 size_t prev_live = r->marked_bytes();
689 size_t live = r->live_bytes();
690 size_t size = r->used();
691 size_t reg_size = HeapRegion::GrainBytes;
692 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
693 _total_memory += size;
694 ++_total_count;
695 if (size == reg_size) {
696 // we don't include non-full regions since they are unlikely included in mixed gc
697 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
698 _total_memory_to_free += size - prev_live;
699 }
700 }
701 }
702 return false;
703 }
704 };
705
706
707 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
708 if (!UseG1GC) {
709 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
710 }
711 if (liveness < 0) {
712 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
713 }
714
715 G1CollectedHeap* g1h = G1CollectedHeap::heap();
716 OldRegionsLivenessClosure rli(liveness);
717 g1h->heap_region_iterate(&rli);
718
719 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
720 result->long_at_put(0, rli.total_count());
721 result->long_at_put(1, rli.total_memory());
722 result->long_at_put(2, rli.total_memory_to_free());
723 return (jlongArray) JNIHandles::make_local(env, result);
724 WB_END
725
726 #endif // INCLUDE_G1GC
727
728 #if INCLUDE_NMT
729 // Alloc memory using the test memory type so that we can use that to see if
730 // NMT picks it up correctly
731 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
732 jlong addr = 0;
733 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
734 return addr;
735 WB_END
736
737 // Alloc memory with pseudo call stack. The test can create psudo malloc
738 // allocation site to stress the malloc tracking.
739 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
740 address pc = (address)(size_t)pseudo_stack;
741 NativeCallStack stack(&pc, 1);
742 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
743 WB_END
744
745 // Alloc memory with pseudo call stack and specific memory type.
746 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
747 address pc = (address)(size_t)pseudo_stack;
748 NativeCallStack stack(&pc, 1);
749 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
750 WB_END
751
752 // Free the memory allocated by NMTAllocTest
753 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
754 os::free((void*)(uintptr_t)mem);
755 WB_END
756
757 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
758 jlong addr = 0;
759
760 addr = (jlong)(uintptr_t)os::reserve_memory(size);
761 MemTracker::record_virtual_memory_type((address)addr, mtTest);
762
763 return addr;
764 WB_END
765
766 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
767 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
768 MemTracker::record_virtual_memory_type((address)addr, mtTest);
769
770 return addr;
771 WB_END
772
773 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
774 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
775 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
776 WB_END
777
778 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
779 os::uncommit_memory((char *)(uintptr_t)addr, size);
780 WB_END
781
782 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
783 os::release_memory((char *)(uintptr_t)addr, size);
784 WB_END
785
786 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
787 // Test that we can downgrade NMT levels but not upgrade them.
788 if (MemTracker::tracking_level() == NMT_off) {
789 MemTracker::transition_to(NMT_off);
790 return MemTracker::tracking_level() == NMT_off;
791 } else {
792 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
793 MemTracker::transition_to(NMT_summary);
794 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
795
796 // Can't go to detail once NMT is set to summary.
797 MemTracker::transition_to(NMT_detail);
798 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
799
800 // Shutdown sets tracking level to minimal.
801 MemTracker::shutdown();
802 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
803
804 // Once the tracking level is minimal, we cannot increase to summary.
805 // The code ignores this request instead of asserting because if the malloc site
806 // table overflows in another thread, it tries to change the code to summary.
807 MemTracker::transition_to(NMT_summary);
808 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
809
810 // Really can never go up to detail, verify that the code would never do this.
811 MemTracker::transition_to(NMT_detail);
812 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
813 return MemTracker::tracking_level() == NMT_minimal;
814 }
815 WB_END
816
817 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
818 int hash_size = MallocSiteTable::hash_buckets();
819 assert(hash_size > 0, "NMT hash_size should be > 0");
820 return (jint)hash_size;
821 WB_END
822
823 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
824 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
825 return (jlong)arena;
826 WB_END
827
828 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
829 Arena* a = (Arena*)arena;
830 delete a;
831 WB_END
832
833 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
834 Arena* a = (Arena*)arena;
835 a->Amalloc(size_t(size));
836 WB_END
837 #endif // INCLUDE_NMT
838
839 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
840 assert(method != NULL, "method should not be null");
841 ThreadToNativeFromVM ttn(thread);
842 return env->FromReflectedMethod(method);
843 }
844
845 static CompLevel highestCompLevel() {
846 return TieredCompilation ? MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) : CompLevel_highest_tier;
847 }
848
849 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
850 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
851 private:
852 int _result;
853 const bool _make_not_entrant;
854 public:
855 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
856 _result(0), _make_not_entrant(make_not_entrant) { }
857 int result() const { return _result; }
858
859 void doit() {
860 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
861 if (t->has_last_Java_frame()) {
862 for (StackFrameStream fst(t, false); !fst.is_done(); fst.next()) {
863 frame* f = fst.current();
864 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
865 Deoptimization::deoptimize(t, *f);
866 if (_make_not_entrant) {
867 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
868 assert(cm != NULL, "sanity check");
869 cm->make_not_entrant();
870 }
871 ++_result;
872 }
873 }
874 }
875 }
876 }
877 };
878
879 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
880 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
881 VMThread::execute(&op);
882 return op.result();
883 WB_END
884
885 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
886 CodeCache::mark_all_nmethods_for_deoptimization();
887 Deoptimization::deoptimize_all_marked();
888 WB_END
889
890 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
891 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
892 int result = 0;
893 CHECK_JNI_EXCEPTION_(env, result);
894 MutexLocker mu(Compile_lock);
895 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
896 if (is_osr) {
897 result += mh->mark_osr_nmethods();
898 } else if (mh->code() != NULL) {
899 mh->code()->mark_for_deoptimization();
900 ++result;
901 }
902 result += CodeCache::mark_for_deoptimization(mh());
903 if (result > 0) {
904 Deoptimization::deoptimize_all_marked();
905 }
906 return result;
907 WB_END
908
909 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
910 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
911 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
912 MutexLocker mu(Compile_lock);
913 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
914 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
915 if (code == NULL) {
916 return JNI_FALSE;
917 }
918 return (code->is_alive() && !code->is_marked_for_deoptimization());
919 WB_END
920
921 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
922 if (method == NULL || comp_level > highestCompLevel()) {
923 return false;
924 }
925 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
926 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
927 MutexLocker mu(Compile_lock);
928 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
929 if (is_osr) {
930 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
931 } else {
932 return CompilationPolicy::can_be_compiled(mh, comp_level);
933 }
934 WB_END
935
936 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
937 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
938 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
939 MutexLocker mu(Compile_lock);
940 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
941 return mh->queued_for_compilation();
942 WB_END
943
944 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
945 if (compLevel < CompLevel_none || compLevel > highestCompLevel()) {
946 return false; // Intrinsic is not available on a non-existent compilation level.
947 }
948 jmethodID method_id, compilation_context_id;
949 method_id = reflected_method_to_jmid(thread, env, method);
950 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
951 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
952
953 DirectiveSet* directive;
954 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
955 assert(comp != NULL, "compiler not available");
956 if (compilation_context != NULL) {
957 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
958 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
959 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
960 directive = DirectivesStack::getMatchingDirective(cch, comp);
961 } else {
962 // Calling with NULL matches default directive
963 directive = DirectivesStack::getDefaultDirective(comp);
964 }
965 bool result = comp->is_intrinsic_available(mh, directive);
966 DirectivesStack::release(directive);
967 return result;
968 WB_END
969
970 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
971 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
972 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
973 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
974 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
975 return (code != NULL ? code->comp_level() : CompLevel_none);
976 WB_END
977
978 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
979 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
980 CHECK_JNI_EXCEPTION(env);
981 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
982 if (is_osr) {
983 mh->set_not_osr_compilable("WhiteBox", comp_level);
984 } else {
985 mh->set_not_compilable("WhiteBox", comp_level);
986 }
987 WB_END
988
989 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
990 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
991 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
992 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
993 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
994 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
995 WB_END
996
997 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
998 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
999 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1000 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1001 bool result = mh->dont_inline();
1002 mh->set_dont_inline(value == JNI_TRUE);
1003 return result;
1004 WB_END
1005
1006 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1007 if (comp_level == CompLevel_any) {
1008 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1009 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1010 } else {
1011 return CompileBroker::queue_size(comp_level);
1012 }
1013 WB_END
1014
1015 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1016 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1017 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1018 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1019 bool result = mh->force_inline();
1020 mh->set_force_inline(value == JNI_TRUE);
1021 return result;
1022 WB_END
1023
1024 #ifdef LINUX
1025 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1026 const char* proc_self_cgroup,
1027 const char* proc_self_mountinfo,
1028 u1* cg_flags) {
1029 CgroupInfo cg_infos[4];
1030 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1031 proc_self_cgroup,
1032 proc_self_mountinfo, cg_flags);
1033 }
1034 #endif
1035
1036 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
1037 // Screen for unavailable/bad comp level or null method
1038 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1039 if (method == NULL) {
1040 tty->print_cr("WB error: request to compile NULL method");
1041 return false;
1042 }
1043 if (comp_level > highestCompLevel()) {
1044 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1045 return false;
1046 }
1047 if (comp == NULL) {
1048 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1049 return false;
1050 }
1051
1052 // Check if compilation is blocking
1053 methodHandle mh(THREAD, method);
1054 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1055 bool is_blocking = !directive->BackgroundCompilationOption;
1056 DirectivesStack::release(directive);
1057
1058 // Compile method and check result
1059 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
1060 MutexLocker mu(THREAD, Compile_lock);
1061 bool is_queued = mh->queued_for_compilation();
1062 if ((!is_blocking && is_queued) || nm != NULL) {
1063 return true;
1064 }
1065 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1066 mh->print_short_name(tty);
1067 tty->cr();
1068 if (is_blocking && is_queued) {
1069 tty->print_cr("WB error: blocking compilation is still in queue!");
1070 }
1071 return false;
1072 }
1073
1074 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1075 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1076 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1077 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1078 WB_END
1079
1080 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1081 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1082 Method* clinit = ik->class_initializer();
1083 if (clinit == NULL) {
1084 return false;
1085 }
1086 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1087 WB_END
1088
1089 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1090 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1091 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1092
1093 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1094 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1095 bool result = directive->PrintAssemblyOption;
1096 DirectivesStack::release(directive);
1097
1098 return result;
1099 WB_END
1100
1101 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1102 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1103 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1104
1105 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1106
1107 ResourceMark rm(THREAD);
1108 const char* error_msg = NULL;
1109 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1110 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1111
1112 if (m == NULL) {
1113 assert(error_msg != NULL, "Always have an error message");
1114 tty->print_cr("Got error: %s", error_msg);
1115 return -1; // Pattern failed
1116 }
1117
1118 // Pattern works - now check if it matches
1119 int result;
1120 if (m->match(mh, InlineMatcher::force_inline)) {
1121 result = 2; // Force inline match
1122 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1123 result = 1; // Dont inline match
1124 } else {
1125 result = 0; // No match
1126 }
1127 delete m;
1128 return result;
1129 WB_END
1130
1131 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1132 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1133 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1134
1135 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1136
1137 ResourceMark rm;
1138 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1139
1140 const char* error_msg = NULL;
1141
1142 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
1143 if (m == NULL) {
1144 assert(error_msg != NULL, "Must have error_msg");
1145 tty->print_cr("Got error: %s", error_msg);
1146 return -1;
1147 }
1148
1149 // Pattern works - now check if it matches
1150 int result = m->matches(mh);
1151 delete m;
1152 assert(result == 0 || result == 1, "Result out of range");
1153 return result;
1154 WB_END
1155
1156 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1157 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1158 CHECK_JNI_EXCEPTION(env);
1159 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1160
1161 MethodData* mdo = mh->method_data();
1162 if (mdo == NULL) {
1163 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1164 mdo = mh->method_data();
1165 }
1166 mdo->init();
1167 InvocationCounter* icnt = mdo->invocation_counter();
1168 InvocationCounter* bcnt = mdo->backedge_counter();
1169 // set i-counter according to TieredThresholdPolicy::is_method_profiled
1170 icnt->set(Tier4MinInvocationThreshold);
1171 bcnt->set(Tier4CompileThreshold);
1172 WB_END
1173
1174 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1175 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1176 CHECK_JNI_EXCEPTION(env);
1177 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1178 MutexLocker mu(THREAD, Compile_lock);
1179 MethodData* mdo = mh->method_data();
1180 MethodCounters* mcs = mh->method_counters();
1181
1182 if (mdo != NULL) {
1183 mdo->init();
1184 ResourceMark rm(THREAD);
1185 int arg_count = mdo->method()->size_of_parameters();
1186 for (int i = 0; i < arg_count; i++) {
1187 mdo->set_arg_modified(i, 0);
1188 }
1189 MutexLocker mu(THREAD, mdo->extra_data_lock());
1190 mdo->clean_method_data(/*always_clean*/true);
1191 }
1192
1193 mh->clear_not_c1_compilable();
1194 mh->clear_not_c2_compilable();
1195 mh->clear_not_c2_osr_compilable();
1196 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1197 if (mcs != NULL) {
1198 mcs->backedge_counter()->init();
1199 mcs->invocation_counter()->init();
1200 mcs->set_interpreter_invocation_count(0);
1201 mcs->set_interpreter_throwout_count(0);
1202
1203 #ifdef TIERED
1204 mcs->set_rate(0.0F);
1205 mh->set_prev_event_count(0);
1206 mh->set_prev_time(0);
1207 #endif
1208 }
1209 WB_END
1210
1211 template <typename T>
1212 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const JVMFlag*, T*)) {
1213 if (name == NULL) {
1214 return false;
1215 }
1216 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1217 const char* flag_name = env->GetStringUTFChars(name, NULL);
1218 CHECK_JNI_EXCEPTION_(env, false);
1219 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1220 JVMFlag::Error result = (*TAt)(flag, value);
1221 env->ReleaseStringUTFChars(name, flag_name);
1222 return (result == JVMFlag::SUCCESS);
1223 }
1224
1225 template <typename T>
1226 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(JVMFlag* flag, T*, JVMFlag::Flags)) {
1227 if (name == NULL) {
1228 return false;
1229 }
1230 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1231 const char* flag_name = env->GetStringUTFChars(name, NULL);
1232 CHECK_JNI_EXCEPTION_(env, false);
1233 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1234 JVMFlag::Error result = (*TAtPut)(flag, value, JVMFlag::INTERNAL);
1235 env->ReleaseStringUTFChars(name, flag_name);
1236 return (result == JVMFlag::SUCCESS);
1237 }
1238
1239 template <typename T>
1240 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1241 ResourceMark rm(thread);
1242 jclass clazz = env->FindClass(name->as_C_string());
1243 CHECK_JNI_EXCEPTION_(env, NULL);
1244 jmethodID methodID = env->GetStaticMethodID(clazz,
1245 vmSymbols::valueOf_name()->as_C_string(),
1246 sig->as_C_string());
1247 CHECK_JNI_EXCEPTION_(env, NULL);
1248 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1249 CHECK_JNI_EXCEPTION_(env, NULL);
1250 return result;
1251 }
1252
1253 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1254 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1255 }
1256 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1257 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1258 }
1259 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1260 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1261 }
1262 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1263 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1264 }*/
1265 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1266 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1267 }
1268
1269 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1270 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1271 const char* flag_name = env->GetStringUTFChars(name, NULL);
1272 CHECK_JNI_EXCEPTION_(env, NULL);
1273 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1274 env->ReleaseStringUTFChars(name, flag_name);
1275 return result;
1276 }
1277
1278 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1279 const JVMFlag* flag = getVMFlag(thread, env, name);
1280 return (flag != NULL) && flag->is_constant_in_binary();
1281 WB_END
1282
1283 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1284 const JVMFlag* flag = getVMFlag(thread, env, name);
1285 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1286 WB_END
1287
1288 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1289 bool result;
1290 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1291 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1292 return booleanBox(thread, env, result);
1293 }
1294 return NULL;
1295 WB_END
1296
1297 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1298 int result;
1299 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1300 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1301 return longBox(thread, env, result);
1302 }
1303 return NULL;
1304 WB_END
1305
1306 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1307 uint result;
1308 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1309 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1310 return longBox(thread, env, result);
1311 }
1312 return NULL;
1313 WB_END
1314
1315 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1316 intx result;
1317 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1318 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1319 return longBox(thread, env, result);
1320 }
1321 return NULL;
1322 WB_END
1323
1324 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1325 uintx result;
1326 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1327 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1328 return longBox(thread, env, result);
1329 }
1330 return NULL;
1331 WB_END
1332
1333 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1334 uint64_t result;
1335 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1336 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1337 return longBox(thread, env, result);
1338 }
1339 return NULL;
1340 WB_END
1341
1342 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1343 size_t result;
1344 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1345 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1346 return longBox(thread, env, result);
1347 }
1348 return NULL;
1349 WB_END
1350
1351 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1352 double result;
1353 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1354 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1355 return doubleBox(thread, env, result);
1356 }
1357 return NULL;
1358 WB_END
1359
1360 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1361 ccstr ccstrResult;
1362 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1363 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1364 jstring result = env->NewStringUTF(ccstrResult);
1365 CHECK_JNI_EXCEPTION_(env, NULL);
1366 return result;
1367 }
1368 return NULL;
1369 WB_END
1370
1371 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1372 bool result = value == JNI_TRUE ? true : false;
1373 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1374 WB_END
1375
1376 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1377 int result = value;
1378 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1379 WB_END
1380
1381 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1382 uint result = value;
1383 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1384 WB_END
1385
1386 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1387 intx result = value;
1388 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1389 WB_END
1390
1391 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1392 uintx result = value;
1393 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1394 WB_END
1395
1396 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1397 uint64_t result = value;
1398 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1399 WB_END
1400
1401 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1402 size_t result = value;
1403 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1404 WB_END
1405
1406 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1407 double result = value;
1408 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1409 WB_END
1410
1411 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1412 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1413 const char* ccstrValue;
1414 if (value == NULL) {
1415 ccstrValue = NULL;
1416 }
1417 else {
1418 ccstrValue = env->GetStringUTFChars(value, NULL);
1419 CHECK_JNI_EXCEPTION(env);
1420 }
1421 ccstr ccstrResult = ccstrValue;
1422 bool needFree;
1423 {
1424 ThreadInVMfromNative ttvfn(thread); // back to VM
1425 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1426 }
1427 if (value != NULL) {
1428 env->ReleaseStringUTFChars(value, ccstrValue);
1429 }
1430 if (needFree) {
1431 FREE_C_HEAP_ARRAY(char, ccstrResult);
1432 }
1433 WB_END
1434
1435 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1436 WhiteBox::compilation_locked = true;
1437 WB_END
1438
1439 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1440 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1441 WhiteBox::compilation_locked = false;
1442 mo.notify_all();
1443 WB_END
1444
1445 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1446 // Force a code cache sweep and block until it finished
1447 NMethodSweeper::force_sweep();
1448 WB_END
1449
1450 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1451 ResourceMark rm(THREAD);
1452 int len;
1453 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1454 return (StringTable::lookup(name, len) != NULL);
1455 WB_END
1456
1457 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1458 if (AsyncDeflateIdleMonitors) {
1459 // AsyncDeflateIdleMonitors needs to know when System.gc() or
1460 // the equivalent is called so any special clean up can be done
1461 // at a safepoint, e.g., TestHumongousClassLoader.java.
1462 ObjectSynchronizer::set_is_special_deflation_requested(true);
1463 }
1464 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1465 Universe::heap()->collect(GCCause::_wb_full_gc);
1466 #if INCLUDE_G1GC
1467 if (UseG1GC) {
1468 // Needs to be cleared explicitly for G1
1469 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1470 }
1471 #endif // INCLUDE_G1GC
1472 WB_END
1473
1474 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1475 Universe::heap()->collect(GCCause::_wb_young_gc);
1476 WB_END
1477
1478 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1479 // static+volatile in order to force the read to happen
1480 // (not be eliminated by the compiler)
1481 static char c;
1482 static volatile char* p;
1483
1484 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1485 if (p == NULL) {
1486 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1487 }
1488
1489 c = *p;
1490 WB_END
1491
1492 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1493 const char* features = VM_Version::features_string();
1494 ThreadToNativeFromVM ttn(thread);
1495 jstring features_string = env->NewStringUTF(features);
1496
1497 CHECK_JNI_EXCEPTION_(env, NULL);
1498
1499 return features_string;
1500 WB_END
1501
1502 int WhiteBox::get_blob_type(const CodeBlob* code) {
1503 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1504 if (code->is_aot()) {
1505 return -1;
1506 }
1507 return CodeCache::get_code_heap(code)->code_blob_type();
1508 }
1509
1510 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1511 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1512 return CodeCache::get_code_heap(blob_type);
1513 }
1514
1515 struct CodeBlobStub {
1516 CodeBlobStub(const CodeBlob* blob) :
1517 name(os::strdup(blob->name())),
1518 size(blob->size()),
1519 blob_type(WhiteBox::get_blob_type(blob)),
1520 address((jlong) blob) { }
1521 ~CodeBlobStub() { os::free((void*) name); }
1522 const char* const name;
1523 const jint size;
1524 const jint blob_type;
1525 const jlong address;
1526 };
1527
1528 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1529 ResourceMark rm;
1530 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1531 CHECK_JNI_EXCEPTION_(env, NULL);
1532 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1533
1534 jstring name = env->NewStringUTF(cb->name);
1535 CHECK_JNI_EXCEPTION_(env, NULL);
1536 env->SetObjectArrayElement(result, 0, name);
1537
1538 jobject obj = integerBox(thread, env, cb->size);
1539 CHECK_JNI_EXCEPTION_(env, NULL);
1540 env->SetObjectArrayElement(result, 1, obj);
1541
1542 obj = integerBox(thread, env, cb->blob_type);
1543 CHECK_JNI_EXCEPTION_(env, NULL);
1544 env->SetObjectArrayElement(result, 2, obj);
1545
1546 obj = longBox(thread, env, cb->address);
1547 CHECK_JNI_EXCEPTION_(env, NULL);
1548 env->SetObjectArrayElement(result, 3, obj);
1549
1550 return result;
1551 }
1552
1553 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1554 ResourceMark rm(THREAD);
1555 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1556 CHECK_JNI_EXCEPTION_(env, NULL);
1557 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1558 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1559 jobjectArray result = NULL;
1560 if (code == NULL) {
1561 return result;
1562 }
1563 int comp_level = code->comp_level();
1564 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1565
1566 ThreadToNativeFromVM ttn(thread);
1567 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1568 CHECK_JNI_EXCEPTION_(env, NULL);
1569 result = env->NewObjectArray(5, clazz, NULL);
1570 if (result == NULL) {
1571 return result;
1572 }
1573
1574 CodeBlobStub stub(code);
1575 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1576 CHECK_JNI_EXCEPTION_(env, NULL);
1577 env->SetObjectArrayElement(result, 0, codeBlob);
1578
1579 jobject level = integerBox(thread, env, comp_level);
1580 CHECK_JNI_EXCEPTION_(env, NULL);
1581 env->SetObjectArrayElement(result, 1, level);
1582
1583 jbyteArray insts = env->NewByteArray(insts_size);
1584 CHECK_JNI_EXCEPTION_(env, NULL);
1585 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1586 env->SetObjectArrayElement(result, 2, insts);
1587
1588 jobject id = integerBox(thread, env, code->compile_id());
1589 CHECK_JNI_EXCEPTION_(env, NULL);
1590 env->SetObjectArrayElement(result, 3, id);
1591
1592 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1593 CHECK_JNI_EXCEPTION_(env, NULL);
1594 env->SetObjectArrayElement(result, 4, entry_point);
1595
1596 return result;
1597 WB_END
1598
1599 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1600 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1601 BufferBlob* blob;
1602 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1603 if (full_size < size) {
1604 full_size += align_up(size - full_size, oopSize);
1605 }
1606 {
1607 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1608 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1609 if (blob != NULL) {
1610 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1611 }
1612 }
1613 // Track memory usage statistic after releasing CodeCache_lock
1614 MemoryService::track_code_cache_memory_usage();
1615 return blob;
1616 }
1617
1618 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1619 if (size < 0) {
1620 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1621 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1622 }
1623 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1624 WB_END
1625
1626 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1627 if (addr == 0) {
1628 return;
1629 }
1630 BufferBlob::free((BufferBlob*) addr);
1631 WB_END
1632
1633 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1634 ResourceMark rm;
1635 GrowableArray<CodeBlobStub*> blobs;
1636 {
1637 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1638 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1639 if (heap == NULL) {
1640 return NULL;
1641 }
1642 for (CodeBlob* cb = (CodeBlob*) heap->first();
1643 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1644 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1645 new (stub) CodeBlobStub(cb);
1646 blobs.append(stub);
1647 }
1648 }
1649 ThreadToNativeFromVM ttn(thread);
1650 jobjectArray result = NULL;
1651 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1652 CHECK_JNI_EXCEPTION_(env, NULL);
1653 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1654 CHECK_JNI_EXCEPTION_(env, NULL);
1655 if (result == NULL) {
1656 return result;
1657 }
1658 int i = 0;
1659 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1660 it != blobs.end(); ++it) {
1661 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1662 CHECK_JNI_EXCEPTION_(env, NULL);
1663 env->SetObjectArrayElement(result, i, obj);
1664 CHECK_JNI_EXCEPTION_(env, NULL);
1665 ++i;
1666 }
1667 return result;
1668 WB_END
1669
1670 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1671 return CompileBroker::get_compilation_activity_mode();
1672 WB_END
1673
1674 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1675 if (addr == 0) {
1676 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1677 "WB_GetCodeBlob: addr is null");
1678 }
1679 ThreadToNativeFromVM ttn(thread);
1680 CodeBlobStub stub((CodeBlob*) addr);
1681 return codeBlob2objectArray(thread, env, &stub);
1682 WB_END
1683
1684 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1685 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1686 CHECK_JNI_EXCEPTION_(env, 0);
1687 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1688 return (jlong) mh->method_data();
1689 WB_END
1690
1691 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1692 return (jlong) Thread::current()->stack_size();
1693 WB_END
1694
1695 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1696 JavaThread* t = JavaThread::current();
1697 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1698 WB_END
1699
1700
1701 int WhiteBox::array_bytes_to_length(size_t bytes) {
1702 return Array<u1>::bytes_to_length(bytes);
1703 }
1704
1705 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1706 if (size < 0) {
1707 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1708 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1709 }
1710
1711 oop class_loader_oop = JNIHandles::resolve(class_loader);
1712 ClassLoaderData* cld = class_loader_oop != NULL
1713 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1714 : ClassLoaderData::the_null_class_loader_data();
1715
1716 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1717
1718 return (jlong)(uintptr_t)metadata;
1719 WB_END
1720
1721 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1722 oop class_loader_oop = JNIHandles::resolve(class_loader);
1723 ClassLoaderData* cld = class_loader_oop != NULL
1724 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1725 : ClassLoaderData::the_null_class_loader_data();
1726
1727 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1728 WB_END
1729
1730 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1731 jstring version, jstring location, jobjectArray packages))
1732 Modules::define_module(module, is_open, version, location, packages, CHECK);
1733 WB_END
1734
1735 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1736 Modules::add_module_exports_qualified(from_module, package, to_module, CHECK);
1737 WB_END
1738
1739 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1740 Modules::add_module_exports_to_all_unnamed(module, package, CHECK);
1741 WB_END
1742
1743 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1744 Modules::add_module_exports(module, package, NULL, CHECK);
1745 WB_END
1746
1747 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1748 Modules::add_reads_module(from_module, source_module, CHECK);
1749 WB_END
1750
1751 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1752 if (inc < 0) {
1753 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1754 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1755 }
1756
1757 jlong max_size_t = (jlong) ((size_t) -1);
1758 if (inc > max_size_t) {
1759 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1760 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1761 }
1762
1763 size_t new_cap_until_GC = 0;
1764 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1765 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1766 if (!success) {
1767 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1768 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1769 "due to contention with another thread");
1770 }
1771 return (jlong) new_cap_until_GC;
1772 WB_END
1773
1774 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1775 return (jlong) MetaspaceGC::capacity_until_GC();
1776 WB_END
1777
1778 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1779 return (jlong)Metaspace::reserve_alignment();
1780 WB_END
1781
1782 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1783 Mutex::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1784 Mutex::_safepoint_check_always :
1785 Mutex::_safepoint_check_never;
1786 Mutex::SafepointCheckFlag sfpt_check_attempted = attemptedNoSafepointValue ?
1787 Mutex::_no_safepoint_check_flag :
1788 Mutex::_safepoint_check_flag;
1789 MutexLocker ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1790 sfpt_check_attempted);
1791 WB_END
1792
1793 WB_ENTRY(void, WB_AssertSpecialLock(JNIEnv* env, jobject o, jboolean allowVMBlock, jboolean safepointCheck))
1794 // Create a special lock violating condition in value
1795 Mutex::SafepointCheckRequired sfpt_check_required = safepointCheck ?
1796 Mutex::_safepoint_check_always :
1797 Mutex::_safepoint_check_never;
1798 Mutex::SafepointCheckFlag safepoint_check = safepointCheck ?
1799 Monitor::_safepoint_check_flag :
1800 Monitor::_no_safepoint_check_flag;
1801
1802 MutexLocker ml(new Mutex(Mutex::special, "SpecialTest_lock", allowVMBlock, sfpt_check_required), safepoint_check);
1803 // If the lock above succeeds, try to safepoint to test the NSV implied with this special lock.
1804 ThreadBlockInVM tbivm(JavaThread::current());
1805 WB_END
1806
1807 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1808 oop obj_oop = JNIHandles::resolve(obj);
1809 return (jboolean) obj_oop->mark().has_monitor();
1810 WB_END
1811
1812 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1813 if (AsyncDeflateIdleMonitors) {
1814 // AsyncDeflateIdleMonitors needs to know when System.gc() or
1815 // the equivalent is called so any special clean up can be done
1816 // at a safepoint, e.g., TestRTMTotalCountIncrRate.java or
1817 // TestUseRTMForStackLocks.java.
1818 ObjectSynchronizer::set_is_special_deflation_requested(true);
1819 }
1820 VM_ForceSafepoint force_safepoint_op;
1821 VMThread::execute(&force_safepoint_op);
1822 WB_END
1823
1824 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1825 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1826 return (jlong) ik->constants();
1827 WB_END
1828
1829 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1830 return ConstantPool::CPCACHE_INDEX_TAG;
1831 WB_END
1832
1833 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1834 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1835 ConstantPool* cp = ik->constants();
1836 if (cp->cache() == NULL) {
1837 return -1;
1838 }
1839 return cp->cache()->length();
1840 WB_END
1841
1842 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1843 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1844 ConstantPool* cp = ik->constants();
1845 if (cp->cache() == NULL) {
1846 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1847 }
1848 jint cpci = index;
1849 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1850 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1851 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1852 }
1853 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1854 return cpi;
1855 WB_END
1856
1857 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1858 return ConstantPool::encode_invokedynamic_index(index);
1859 WB_END
1860
1861 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1862 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1863 VMThread::execute(&clear_ics);
1864 WB_END
1865
1866 template <typename T>
1867 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1868 assert(value != NULL, "sanity");
1869 if (method == NULL || name == NULL) {
1870 return false;
1871 }
1872 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1873 CHECK_JNI_EXCEPTION_(env, false);
1874 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1875 // can't be in VM when we call JNI
1876 ThreadToNativeFromVM ttnfv(thread);
1877 const char* flag_name = env->GetStringUTFChars(name, NULL);
1878 CHECK_JNI_EXCEPTION_(env, false);
1879 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1880 env->ReleaseStringUTFChars(name, flag_name);
1881 return result;
1882 }
1883
1884 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1885 bool result;
1886 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1887 // can't be in VM when we call JNI
1888 ThreadToNativeFromVM ttnfv(thread);
1889 return booleanBox(thread, env, result);
1890 }
1891 return NULL;
1892 WB_END
1893
1894 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1895 intx result;
1896 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1897 // can't be in VM when we call JNI
1898 ThreadToNativeFromVM ttnfv(thread);
1899 return longBox(thread, env, result);
1900 }
1901 return NULL;
1902 WB_END
1903
1904 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1905 uintx result;
1906 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1907 // can't be in VM when we call JNI
1908 ThreadToNativeFromVM ttnfv(thread);
1909 return longBox(thread, env, result);
1910 }
1911 return NULL;
1912 WB_END
1913
1914 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1915 double result;
1916 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1917 // can't be in VM when we call JNI
1918 ThreadToNativeFromVM ttnfv(thread);
1919 return doubleBox(thread, env, result);
1920 }
1921 return NULL;
1922 WB_END
1923
1924 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1925 ccstr ccstrResult;
1926 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1927 // can't be in VM when we call JNI
1928 ThreadToNativeFromVM ttnfv(thread);
1929 jstring result = env->NewStringUTF(ccstrResult);
1930 CHECK_JNI_EXCEPTION_(env, NULL);
1931 return result;
1932 }
1933 return NULL;
1934 WB_END
1935
1936 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1937 const char* p = Arguments::get_default_shared_archive_path();
1938 ThreadToNativeFromVM ttn(thread);
1939 jstring path_string = env->NewStringUTF(p);
1940
1941 CHECK_JNI_EXCEPTION_(env, NULL);
1942
1943 return path_string;
1944 WB_END
1945
1946 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1947 return UseSharedSpaces;
1948 WB_END
1949
1950 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
1951 return FileMapInfo::memory_mapping_failed();
1952 WB_END
1953
1954 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1955 oop obj_oop = JNIHandles::resolve(obj);
1956 return HeapShared::is_archived_object(obj_oop);
1957 WB_END
1958
1959 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1960 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1961 WB_END
1962
1963 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1964 return !HeapShared::closed_archive_heap_region_mapped();
1965 WB_END
1966
1967 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1968 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1969 if (k->is_instance_klass()) {
1970 InstanceKlass *ik = InstanceKlass::cast(k);
1971 ConstantPool *cp = ik->constants();
1972 objArrayOop refs = cp->resolved_references();
1973 return (jobject)JNIHandles::make_local(env, refs);
1974 } else {
1975 return NULL;
1976 }
1977 WB_END
1978
1979 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
1980 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1981 if (!k->is_instance_klass()) {
1982 return;
1983 }
1984 InstanceKlass *ik = InstanceKlass::cast(k);
1985 ik->link_class(THREAD); // may throw verification error
1986 WB_END
1987
1988 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1989 return HeapShared::open_archive_heap_region_mapped();
1990 WB_END
1991
1992 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1993 #if INCLUDE_CDS
1994 return true;
1995 #else
1996 return false;
1997 #endif // INCLUDE_CDS
1998 WB_END
1999
2000 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncludedInVmBuild(JNIEnv* env))
2001 #if COMPILER2_OR_JVMCI
2002 return true;
2003 #else
2004 return false;
2005 #endif
2006 WB_END
2007
2008 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
2009 return HeapShared::is_heap_object_archiving_allowed();
2010 WB_END
2011
2012
2013 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
2014 #if INCLUDE_JFR
2015 return true;
2016 #else
2017 return false;
2018 #endif // INCLUDE_JFR
2019 WB_END
2020
2021 #if INCLUDE_CDS
2022
2023 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
2024 ResourceMark rm;
2025 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2026 int result = CDSOffsets::find_offset(c_name);
2027 return (jint)result;
2028 WB_END
2029
2030 #endif // INCLUDE_CDS
2031
2032 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2033 class TraceSelfClosure : public HandshakeClosure {
2034 jint _num_threads_completed;
2035
2036 void do_thread(Thread* th) {
2037 assert(th->is_Java_thread(), "sanity");
2038 JavaThread* jt = (JavaThread*)th;
2039 ResourceMark rm;
2040
2041 jt->print_on(tty);
2042 jt->print_stack_on(tty);
2043 tty->cr();
2044 Atomic::inc(&_num_threads_completed);
2045 }
2046
2047 public:
2048 TraceSelfClosure() : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2049
2050 jint num_threads_completed() const { return _num_threads_completed; }
2051 };
2052 TraceSelfClosure tsc;
2053
2054 if (all_threads) {
2055 Handshake::execute(&tsc);
2056 } else {
2057 oop thread_oop = JNIHandles::resolve(thread_handle);
2058 if (thread_oop != NULL) {
2059 JavaThread* target = java_lang_Thread::thread(thread_oop);
2060 Handshake::execute(&tsc, target);
2061 }
2062 }
2063 return tsc.num_threads_completed();
2064 WB_END
2065
2066 //Some convenience methods to deal with objects from java
2067 int WhiteBox::offset_for_field(const char* field_name, oop object,
2068 Symbol* signature_symbol) {
2069 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2070 Thread* THREAD = Thread::current();
2071
2072 //Get the class of our object
2073 Klass* arg_klass = object->klass();
2074 //Turn it into an instance-klass
2075 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2076
2077 //Create symbols to look for in the class
2078 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2079
2080 //To be filled in with an offset of the field we're looking for
2081 fieldDescriptor fd;
2082
2083 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2084 if (res == NULL) {
2085 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2086 name_symbol->as_C_string());
2087 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2088 }
2089
2090 //fetch the field at the offset we've found
2091 int dest_offset = fd.offset();
2092
2093 return dest_offset;
2094 }
2095
2096
2097 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2098 int offset = offset_for_field(field_name, object,
2099 vmSymbols::string_signature());
2100 oop string = object->obj_field(offset);
2101 if (string == NULL) {
2102 return NULL;
2103 }
2104 const char* ret = java_lang_String::as_utf8_string(string);
2105 return ret;
2106 }
2107
2108 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2109 int offset =
2110 offset_for_field(field_name, object, vmSymbols::bool_signature());
2111 bool ret = (object->bool_field(offset) == JNI_TRUE);
2112 return ret;
2113 }
2114
2115 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2116 ResourceMark rm;
2117 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2118
2119 // one by one registration natives for exception catching
2120 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2121 CHECK_JNI_EXCEPTION(env);
2122 for (int i = 0, n = method_count; i < n; ++i) {
2123 // Skip dummy entries
2124 if (method_array[i].fnPtr == NULL) continue;
2125 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2126 jthrowable throwable_obj = env->ExceptionOccurred();
2127 if (throwable_obj != NULL) {
2128 env->ExceptionClear();
2129 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2130 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2131 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2132 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
2133 method_array[i].name, method_array[i].signature);
2134 }
2135 } else {
2136 // Registration failed unexpectedly.
2137 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
2138 method_array[i].name, method_array[i].signature);
2139 env->UnregisterNatives(wbclass);
2140 break;
2141 }
2142 }
2143 }
2144 }
2145
2146 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2147 // can't be in VM when we call JNI
2148 ThreadToNativeFromVM ttnfv(thread);
2149 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2150 CHECK_JNI_EXCEPTION_(env, 0);
2151 int ret;
2152 {
2153 ThreadInVMfromNative ttvfn(thread); // back to VM
2154 ret = DirectivesParser::parse_string(dir, tty);
2155 }
2156 env->ReleaseStringUTFChars(compDirect, dir);
2157 // -1 for error parsing directive. Return 0 as number of directives added.
2158 if (ret == -1) {
2159 ret = 0;
2160 }
2161 return (jint) ret;
2162 WB_END
2163
2164 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2165 DirectivesStack::pop(count);
2166 WB_END
2167
2168 // Checks that the library libfile has the noexecstack bit set.
2169 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2170 jboolean ret = false;
2171 #ifdef LINUX
2172 // Can't be in VM when we call JNI.
2173 ThreadToNativeFromVM ttnfv(thread);
2174 const char* lf = env->GetStringUTFChars(libfile, NULL);
2175 CHECK_JNI_EXCEPTION_(env, 0);
2176 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2177 env->ReleaseStringUTFChars(libfile, lf);
2178 #endif
2179 return ret;
2180 WB_END
2181
2182 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2183 LINUX_ONLY(return OSContainer::is_containerized();)
2184 return false;
2185 WB_END
2186
2187 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2188 jobject o,
2189 jstring proc_cgroups,
2190 jstring proc_self_cgroup,
2191 jstring proc_self_mountinfo))
2192 jint ret = 0;
2193 #ifdef LINUX
2194 ThreadToNativeFromVM ttnfv(thread);
2195 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL);
2196 CHECK_JNI_EXCEPTION_(env, 0);
2197 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL);
2198 CHECK_JNI_EXCEPTION_(env, 0);
2199 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL);
2200 CHECK_JNI_EXCEPTION_(env, 0);
2201 u1 cg_type_flags = 0;
2202 // This sets cg_type_flags
2203 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2204 ret = (jint)cg_type_flags;
2205 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2206 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2207 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2208 #endif
2209 return ret;
2210 WB_END
2211
2212 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2213 os::print_os_info(tty);
2214 WB_END
2215
2216 // Elf decoder
2217 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2218 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2219 ElfFile::_do_not_cache_elf_section = true;
2220 #endif
2221 WB_END
2222
2223 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2224 return (jlong) ResolvedMethodTable::items_count();
2225 WB_END
2226
2227 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2228 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2229 WB_END
2230
2231 WB_ENTRY(jint, WB_AotLibrariesCount(JNIEnv* env, jobject o))
2232 jint result = 0;
2233 #if INCLUDE_AOT
2234 result = (jint) AOTLoader::heaps_count();
2235 #endif
2236 return result;
2237 WB_END
2238
2239 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2240 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2241 // Return size in bytes.
2242 return k->size() * wordSize;
2243 WB_END
2244
2245 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2246 // It explains how the thread's priority field is used for test state coordination.
2247 //
2248 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2249 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2250 jlong tid = java_lang_Thread::thread_id(target_oop);
2251 JavaThread* target = java_lang_Thread::thread(target_oop);
2252
2253 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2254 ThreadsListHandle tlh;
2255
2256 // Look up the target thread by tid to ensure it is present
2257 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2258 if (t == NULL) {
2259 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2260 }
2261
2262 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2263 // Allow target to terminate by boosting priority
2264 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2265
2266 // Now wait for the target to terminate
2267 while (!target->is_terminated()) {
2268 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2269 os::naked_short_sleep(0);
2270 }
2271
2272 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2273
2274 // Now release the GC inducing thread - we have to re-resolve the external oop that
2275 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2276 oop original = JNIHandles::resolve_non_null(target_handle);
2277 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2278
2279 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2280
2281 // The Java code should be creating garbage and triggering GC, which would potentially move
2282 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2283 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2284 // kick in.
2285 for (int i = 0; i < 5; i++) {
2286 oop original = JNIHandles::resolve_non_null(target_handle);
2287 oop current = t->threadObj();
2288 if (original != current) {
2289 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2290 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2291 } else {
2292 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2293 ThreadBlockInVM tbivm(thread);
2294 os::naked_short_sleep(50);
2295 }
2296 }
2297 WB_END
2298
2299 #define CC (char*)
2300
2301 static JNINativeMethod methods[] = {
2302 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2303 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2304 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2305 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2306 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2307 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2308 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2309 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2310 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2311 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2312 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2313 {CC"parseCommandLine0",
2314 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2315 (void*) &WB_ParseCommandLine
2316 },
2317 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2318 (void*)&WB_AddToBootstrapClassLoaderSearch},
2319 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2320 (void*)&WB_AddToSystemClassLoaderSearch},
2321 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2322 (void*)&WB_GetCompressedOopsMaxHeapSize},
2323 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2324 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2325 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2326 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2327 #if INCLUDE_CDS
2328 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2329 #endif
2330 #if INCLUDE_G1GC
2331 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2332 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2333 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2334 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2335 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2336 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2337 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2338 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2339 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2340 (void*)&WB_G1AuxiliaryMemoryUsage },
2341 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2342 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2343 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2344 #endif // INCLUDE_G1GC
2345 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
2346 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart },
2347 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd },
2348 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart },
2349 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd },
2350 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
2351 #if INCLUDE_PARALLELGC
2352 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2353 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2354 #endif
2355 #if INCLUDE_NMT
2356 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2357 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2358 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2359 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2360 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2361 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2362 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2363 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2364 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2365 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2366 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2367 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2368 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2369 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2370 #endif // INCLUDE_NMT
2371 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2372 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2373 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2374 (void*)&WB_DeoptimizeMethod },
2375 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2376 (void*)&WB_IsMethodCompiled },
2377 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2378 (void*)&WB_IsMethodCompilable},
2379 {CC"isMethodQueuedForCompilation0",
2380 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2381 {CC"isIntrinsicAvailable0",
2382 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2383 (void*)&WB_IsIntrinsicAvailable},
2384 {CC"makeMethodNotCompilable0",
2385 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2386 {CC"testSetDontInlineMethod0",
2387 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2388 {CC"getMethodCompilationLevel0",
2389 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2390 {CC"getMethodEntryBci0",
2391 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2392 {CC"getCompileQueueSize",
2393 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2394 {CC"testSetForceInlineMethod0",
2395 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2396 {CC"enqueueMethodForCompilation0",
2397 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2398 {CC"enqueueInitializerForCompilation0",
2399 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2400 {CC"markMethodProfiled",
2401 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2402 {CC"clearMethodState0",
2403 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2404 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2405 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2406 {CC"matchesMethod",
2407 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2408 (void*)&WB_MatchesMethod},
2409 {CC"matchesInline",
2410 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2411 (void*)&WB_MatchesInline},
2412 {CC"shouldPrintAssembly",
2413 CC"(Ljava/lang/reflect/Executable;I)Z",
2414 (void*)&WB_ShouldPrintAssembly},
2415
2416 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2417 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2418 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2419 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2420 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2421 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2422 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2423 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2424 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2425 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2426 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2427 (void*)&WB_SetStringVMFlag},
2428 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2429 (void*)&WB_GetBooleanVMFlag},
2430 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2431 (void*)&WB_GetIntVMFlag},
2432 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2433 (void*)&WB_GetUintVMFlag},
2434 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2435 (void*)&WB_GetIntxVMFlag},
2436 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2437 (void*)&WB_GetUintxVMFlag},
2438 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2439 (void*)&WB_GetUint64VMFlag},
2440 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2441 (void*)&WB_GetSizeTVMFlag},
2442 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2443 (void*)&WB_GetDoubleVMFlag},
2444 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2445 (void*)&WB_GetStringVMFlag},
2446 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2447 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2448 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2449 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2450 {CC"allocateMetaspace",
2451 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2452 {CC"freeMetaspace",
2453 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2454 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2455 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2456 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2457 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2458 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2459 (void*)&WB_GetNMethod },
2460 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2461 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2462 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2463 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2464 {CC"getCompilationActivityMode",
2465 CC"()I", (void*)&WB_GetCompilationActivityMode},
2466 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2467 (void*)&WB_GetMethodData },
2468 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2469 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2470 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2471 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2472 (void*)&WB_DefineModule },
2473 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2474 (void*)&WB_AddModuleExports },
2475 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2476 (void*)&WB_AddReadsModule },
2477 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2478 (void*)&WB_AddModuleExportsToAllUnnamed },
2479 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2480 (void*)&WB_AddModuleExportsToAll },
2481 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2482 {CC"assertSpecialLock", CC"(ZZ)V", (void*)&WB_AssertSpecialLock },
2483 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2484 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2485 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2486 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2487 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2488 {CC"remapInstructionOperandFromCPCache0",
2489 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2490 {CC"encodeConstantPoolIndyIndex0",
2491 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2492 {CC"getMethodBooleanOption",
2493 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2494 (void*)&WB_GetMethodBooleaneOption},
2495 {CC"getMethodIntxOption",
2496 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2497 (void*)&WB_GetMethodIntxOption},
2498 {CC"getMethodUintxOption",
2499 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2500 (void*)&WB_GetMethodUintxOption},
2501 {CC"getMethodDoubleOption",
2502 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2503 (void*)&WB_GetMethodDoubleOption},
2504 {CC"getMethodStringOption",
2505 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2506 (void*)&WB_GetMethodStringOption},
2507 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2508 (void*)&WB_GetDefaultArchivePath},
2509 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2510 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2511 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2512 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2513 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2514 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2515 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2516 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2517 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2518 {CC"isC2OrJVMCIIncludedInVmBuild", CC"()Z", (void*)&WB_isC2OrJVMCIIncludedInVmBuild },
2519 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2520 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2521
2522 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2523 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2524 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2525 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2526 (void*)&WB_AddCompilerDirective },
2527 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2528 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2529 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2530 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2531 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2532 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2533 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2534 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2535 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2536 (void*)&WB_ConcurrentGCRunTo},
2537 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2538 (void*)&WB_CheckLibSpecifiesNoexecstack},
2539 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2540 {CC"validateCgroup",
2541 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2542 (void*)&WB_ValidateCgroup },
2543 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2544 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2545 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2546 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2547 {CC"aotLibrariesCount", CC"()I", (void*)&WB_AotLibrariesCount },
2548 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2549 };
2550
2551
2552 #undef CC
2553
2554 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2555 {
2556 if (WhiteBoxAPI) {
2557 // Make sure that wbclass is loaded by the null classloader
2558 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2559 Handle loader(THREAD, ik->class_loader());
2560 if (loader.is_null()) {
2561 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2562 WhiteBox::set_used();
2563 }
2564 }
2565 }
2566 JVM_END