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