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