1 /*
2 * Copyright (c) 2012, 2022, 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 #include "cds.h"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.hpp"
31 #include "cds/metaspaceShared.hpp"
32 #include "classfile/classLoaderDataGraph.hpp"
33 #include "classfile/classLoaderStats.hpp"
34 #include "classfile/javaClasses.inline.hpp"
35 #include "classfile/modules.hpp"
36 #include "classfile/protectionDomainCache.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/codeCache.hpp"
42 #include "compiler/compilationPolicy.hpp"
43 #include "compiler/directivesParser.hpp"
44 #include "compiler/methodMatcher.hpp"
45 #include "gc/shared/concurrentGCBreakpoints.hpp"
46 #include "gc/shared/gcConfig.hpp"
47 #include "gc/shared/gcLocker.inline.hpp"
48 #include "gc/shared/genArguments.hpp"
49 #include "gc/shared/genCollectedHeap.hpp"
50 #include "jvmtifiles/jvmtiEnv.hpp"
51 #include "logging/log.hpp"
52 #include "memory/iterator.hpp"
53 #include "memory/metadataFactory.hpp"
54 #include "memory/iterator.inline.hpp"
55 #include "memory/metaspace/testHelpers.hpp"
56 #include "memory/metaspaceUtils.hpp"
57 #include "memory/oopFactory.hpp"
58 #include "memory/resourceArea.hpp"
59 #include "memory/universe.hpp"
60 #include "oops/array.hpp"
61 #include "oops/compressedOops.hpp"
62 #include "oops/compressedOops.inline.hpp"
63 #include "oops/constantPool.inline.hpp"
64 #include "oops/klass.inline.hpp"
65 #include "oops/method.inline.hpp"
66 #include "oops/objArrayKlass.hpp"
67 #include "oops/objArrayOop.inline.hpp"
68 #include "oops/oop.inline.hpp"
69 #include "oops/objArrayOop.inline.hpp"
70 #include "oops/typeArrayOop.inline.hpp"
71 #include "prims/resolvedMethodTable.hpp"
72 #include "prims/wbtestmethods/parserTests.hpp"
73 #include "prims/whitebox.inline.hpp"
74 #include "runtime/arguments.hpp"
75 #include "runtime/atomic.hpp"
76 #include "runtime/deoptimization.hpp"
77 #include "runtime/fieldDescriptor.inline.hpp"
78 #include "runtime/flags/jvmFlag.hpp"
79 #include "runtime/flags/jvmFlagAccess.hpp"
80 #include "runtime/frame.inline.hpp"
81 #include "runtime/handles.inline.hpp"
82 #include "runtime/handshake.hpp"
83 #include "runtime/interfaceSupport.inline.hpp"
84 #include "runtime/javaCalls.hpp"
85 #include "runtime/javaThread.inline.hpp"
86 #include "runtime/jniHandles.inline.hpp"
87 #include "runtime/os.hpp"
88 #include "runtime/stackFrameStream.inline.hpp"
89 #include "runtime/synchronizer.hpp"
90 #include "runtime/threadSMR.hpp"
91 #include "runtime/vframe.hpp"
92 #include "runtime/vm_version.hpp"
93 #include "services/mallocSiteTable.hpp"
94 #include "services/memoryService.hpp"
95 #include "services/memTracker.hpp"
96 #include "utilities/align.hpp"
97 #include "utilities/debug.hpp"
98 #include "utilities/elfFile.hpp"
99 #include "utilities/exceptions.hpp"
100 #include "utilities/macros.hpp"
101 #include "utilities/nativeCallStack.hpp"
102 #include "utilities/ostream.hpp"
103 #if INCLUDE_G1GC
104 #include "gc/g1/g1Arguments.hpp"
105 #include "gc/g1/g1CollectedHeap.inline.hpp"
106 #include "gc/g1/g1ConcurrentMark.hpp"
107 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
108 #include "gc/g1/heapRegionManager.hpp"
109 #include "gc/g1/heapRegionRemSet.inline.hpp"
110 #endif // INCLUDE_G1GC
111 #if INCLUDE_PARALLELGC
112 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
113 #endif // INCLUDE_PARALLELGC
114 #if INCLUDE_JVMCI
115 #include "jvmci/jvmciEnv.hpp"
116 #include "jvmci/jvmciRuntime.hpp"
117 #endif
118 #ifdef LINUX
119 #include "osContainer_linux.hpp"
120 #include "cgroupSubsystem_linux.hpp"
121 #endif
122
123 #define SIZE_T_MAX_VALUE ((size_t) -1)
124
125 #define CHECK_JNI_EXCEPTION_(env, value) \
126 do { \
127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
128 THREAD->clear_pending_jni_exception_check(); \
129 if (HAS_PENDING_EXCEPTION) { \
130 return(value); \
131 } \
132 } while (0)
133
134 #define CHECK_JNI_EXCEPTION(env) \
135 do { \
136 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
137 THREAD->clear_pending_jni_exception_check(); \
138 if (HAS_PENDING_EXCEPTION) { \
139 return; \
140 } \
141 } while (0)
142
143 bool WhiteBox::_used = false;
144 volatile bool WhiteBox::compilation_locked = false;
145
146 class VM_WhiteBoxOperation : public VM_Operation {
147 public:
148 VM_WhiteBoxOperation() { }
149 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
150 bool allow_nested_vm_operations() const { return true; }
151 };
152
153
154 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
155 return (jlong)(void*)JNIHandles::resolve(obj);
156 WB_END
157
158 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
159 return heapOopSize;
160 WB_END
161
162 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
163 return os::vm_page_size();
164 WB_END
165
166 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
167 return os::vm_allocation_granularity();
168 WB_END
169
170 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
171 return os::large_page_size();
172 WB_END
173
174 class WBIsKlassAliveClosure : public LockedClassesDo {
175 Symbol* _name;
176 int _count;
177 public:
178 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
179
180 void do_klass(Klass* k) {
181 Symbol* ksym = k->name();
182 if (ksym->fast_compare(_name) == 0) {
183 _count++;
184 } else if (k->is_instance_klass()) {
185 // Need special handling for hidden classes because the JVM
186 // appends "+<hex-address>" to hidden class names.
187 InstanceKlass *ik = InstanceKlass::cast(k);
188 if (ik->is_hidden()) {
189 ResourceMark rm;
190 char* k_name = ksym->as_C_string();
191 // Find the first '+' char and truncate the string at that point.
192 // NOTE: This will not work correctly if the original hidden class
193 // name contains a '+'.
194 char* plus_char = strchr(k_name, '+');
195 if (plus_char != NULL) {
196 *plus_char = 0;
197 char* c_name = _name->as_C_string();
198 if (strcmp(c_name, k_name) == 0) {
199 _count++;
200 }
201 }
202 }
203 }
204 }
205
206 int count() const {
207 return _count;
208 }
209 };
210
211 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
212 oop h_name = JNIHandles::resolve(name);
213 if (h_name == NULL) return false;
214 Symbol* sym = java_lang_String::as_symbol(h_name);
215 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
216
217 WBIsKlassAliveClosure closure(sym);
218 ClassLoaderDataGraph::classes_do(&closure);
219
220 // Return the count of alive classes with this name.
221 return closure.count();
222 WB_END
223
224 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
225 oop h_name = JNIHandles::resolve(name);
226 if (h_name == NULL) return false;
227 Symbol* sym = java_lang_String::as_symbol(h_name);
228 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
229 return (jint)sym->refcount();
230 WB_END
231
232
233 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
234 #if INCLUDE_JVMTI
235 ResourceMark rm;
236 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
237 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
238 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
239 assert(err == JVMTI_ERROR_NONE, "must not fail");
240 #endif
241 }
242 WB_END
243
244 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
245 #if INCLUDE_JVMTI
246 ResourceMark rm;
247 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
248 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
249 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
250 assert(err == JVMTI_ERROR_NONE, "must not fail");
251 #endif
252 }
253 WB_END
254
255
256 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
257 return (jlong)Arguments::max_heap_for_compressed_oops();
258 }
259 WB_END
260
261 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
262 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
263 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
264 MinHeapSize,
265 InitialHeapSize,
266 MaxHeapSize,
267 SpaceAlignment,
268 HeapAlignment);
269 }
270 WB_END
271
272 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
273 size_t granularity = os::vm_allocation_granularity();
274 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
275 VirtualSpace vs;
276 vs.initialize(rhs, 50 * granularity);
277
278 // Check if constraints are complied
279 if (!( UseCompressedOops && rhs.base() != NULL &&
280 CompressedOops::base() != NULL &&
281 CompressedOops::use_implicit_null_checks() )) {
282 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
283 "\tUseCompressedOops is %d\n"
284 "\trhs.base() is " PTR_FORMAT "\n"
285 "\tCompressedOops::base() is " PTR_FORMAT "\n"
286 "\tCompressedOops::use_implicit_null_checks() is %d",
287 UseCompressedOops,
288 p2i(rhs.base()),
289 p2i(CompressedOops::base()),
290 CompressedOops::use_implicit_null_checks());
291 return;
292 }
293 tty->print_cr("Reading from no access area... ");
294 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
295 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
296 WB_END
297
298 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
299 size_t magnitude, size_t iterations) {
300 size_t granularity = os::vm_allocation_granularity();
301 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
302 VirtualSpace vs;
303 if (!vs.initialize(rhs, 0)) {
304 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
305 return 3;
306 }
307
308 int seed = os::random();
309 tty->print_cr("Random seed is %d", seed);
310
311 for (size_t i = 0; i < iterations; i++) {
312
313 // Whether we will shrink or grow
314 bool shrink = os::random() % 2L == 0;
315
316 // Get random delta to resize virtual space
317 size_t delta = (size_t)os::random() % magnitude;
318
319 // If we are about to shrink virtual space below zero, then expand instead
320 if (shrink && vs.committed_size() < delta) {
321 shrink = false;
322 }
323
324 // Resizing by delta
325 if (shrink) {
326 vs.shrink_by(delta);
327 } else {
328 // If expanding fails expand_by will silently return false
329 vs.expand_by(delta, true);
330 }
331 }
332 return 0;
333 }
334
335 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
336 jlong reserved_space_size, jlong magnitude, jlong iterations))
337 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
338 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
339 iterations);
340 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
341 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
342 return 1;
343 }
344
345 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
346 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
347 if (sizeof(size_t) < sizeof(jlong)) {
348 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
349 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
350 || iterations > size_t_max_value) {
351 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
352 return 2;
353 }
354 }
355
356 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
357 (size_t) magnitude, (size_t) iterations);
358 WB_END
359
360 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
361 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
362 WB_END
363
364 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
365 #if INCLUDE_JVMCI
366 if (EnableJVMCI) {
367 JVMCIEnv jvmciEnv(thread, env, __FILE__, __LINE__);
368 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
369 }
370 #endif
371 return false;
372 WB_END
373
374 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
375 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
376 WB_END
377
378 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
379 return GCConfig::is_gc_selected_ergonomically();
380 WB_END
381
382 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
383 oop p = JNIHandles::resolve(obj);
384 #if INCLUDE_G1GC
385 if (UseG1GC) {
386 G1CollectedHeap* g1h = G1CollectedHeap::heap();
387 const HeapRegion* hr = g1h->heap_region_containing(p);
388 return !(hr->is_young());
389 }
390 #endif
391 #if INCLUDE_PARALLELGC
392 if (UseParallelGC) {
393 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
394 return !psh->is_in_young(p);
395 }
396 #endif
397 #if INCLUDE_ZGC
398 if (UseZGC) {
399 return Universe::heap()->is_in(p);
400 }
401 #endif
402 #if INCLUDE_SHENANDOAHGC
403 if (UseShenandoahGC) {
404 return Universe::heap()->is_in(p);
405 }
406 #endif
407 GenCollectedHeap* gch = GenCollectedHeap::heap();
408 return !gch->is_in_young(p);
409 WB_END
410
411 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
412 oop p = JNIHandles::resolve(obj);
413 return p->size() * HeapWordSize;
414 WB_END
415
416 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
417 return (jlong)SpaceAlignment;
418 WB_END
419
420 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
421 return (jlong)HeapAlignment;
422 WB_END
423
424 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
425 return Universe::heap()->supports_concurrent_gc_breakpoints();
426 WB_END
427
428 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
429 ConcurrentGCBreakpoints::acquire_control();
430 WB_END
431
432 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
433 ConcurrentGCBreakpoints::release_control();
434 WB_END
435
436 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
437 ConcurrentGCBreakpoints::run_to_idle();
438 WB_END
439
440 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
441 Handle h_name(THREAD, JNIHandles::resolve(at));
442 ResourceMark rm;
443 const char* c_name = java_lang_String::as_utf8_string(h_name());
444 return ConcurrentGCBreakpoints::run_to(c_name);
445 WB_END
446
447 #if INCLUDE_G1GC
448
449 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
450 if (UseG1GC) {
451 G1CollectedHeap* g1h = G1CollectedHeap::heap();
452 oop result = JNIHandles::resolve(obj);
453 const HeapRegion* hr = g1h->heap_region_containing(result);
454 return hr->is_humongous();
455 }
456 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
457 WB_END
458
459 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
460 if (UseG1GC) {
461 G1CollectedHeap* g1h = G1CollectedHeap::heap();
462 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
463 return hr->is_humongous();
464 }
465 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
466 WB_END
467
468 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
469 if (UseG1GC) {
470 G1CollectedHeap* g1h = G1CollectedHeap::heap();
471 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
472 return hr->is_free();
473 }
474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
475 WB_END
476
477 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
478 if (UseG1GC) {
479 G1CollectedHeap* g1h = G1CollectedHeap::heap();
480 size_t nr = g1h->max_regions();
481 return (jlong)nr;
482 }
483 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
484 WB_END
485
486 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
487 if (UseG1GC) {
488 G1CollectedHeap* g1h = G1CollectedHeap::heap();
489 size_t nr = g1h->num_free_regions();
490 return (jlong)nr;
491 }
492 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
493 WB_END
494
495 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
496 if (UseG1GC) {
497 G1CollectedHeap* g1h = G1CollectedHeap::heap();
498 return g1h->concurrent_mark()->cm_thread()->in_progress();
499 }
500 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
501 WB_END
502
503 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
504 if (UseG1GC) {
505 G1CollectedHeap* g1h = G1CollectedHeap::heap();
506 if (!g1h->concurrent_mark()->cm_thread()->in_progress()) {
507 g1h->collect(GCCause::_wb_conc_mark);
508 return true;
509 }
510 return false;
511 }
512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
513 WB_END
514
515 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
516 if (UseG1GC) {
517 return (jint)HeapRegion::GrainBytes;
518 }
519 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
520 WB_END
521
522 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
523 if (UseG1GC) {
524 return G1CollectedHeap::heap()->has_uncommittable_regions();
525 }
526 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
527 WB_END
528
529 #endif // INCLUDE_G1GC
530
531 #if INCLUDE_PARALLELGC
532
533 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
534 if (UseParallelGC) {
535 return GenAlignment;
536 }
537 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
538 WB_END
539
540 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
541 if (UseParallelGC) {
542 return GenAlignment;
543 }
544 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
545 WB_END
546
547 #endif // INCLUDE_PARALLELGC
548
549 #if INCLUDE_G1GC
550
551 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
552 if (UseG1GC) {
553 ResourceMark rm(THREAD);
554 G1CollectedHeap* g1h = G1CollectedHeap::heap();
555 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
556 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
557 return JNIHandles::make_local(THREAD, h());
558 }
559 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
560 WB_END
561
562 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
563 if (UseG1GC) {
564 G1NUMA* numa = G1NUMA::numa();
565 return (jint)numa->num_active_nodes();
566 }
567 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
568 WB_END
569
570 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
571 if (UseG1GC) {
572 G1NUMA* numa = G1NUMA::numa();
573 int num_node_ids = (int)numa->num_active_nodes();
574 const int* node_ids = numa->node_ids();
575
576 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
577 for (int i = 0; i < num_node_ids; i++) {
578 result->int_at_put(i, (jint)node_ids[i]);
579 }
580 return (jintArray) JNIHandles::make_local(THREAD, result);
581 }
582 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
583 WB_END
584
585 class OldRegionsLivenessClosure: public HeapRegionClosure {
586
587 private:
588 const int _liveness;
589 size_t _total_count;
590 size_t _total_memory;
591 size_t _total_memory_to_free;
592
593 public:
594 OldRegionsLivenessClosure(int liveness) :
595 _liveness(liveness),
596 _total_count(0),
597 _total_memory(0),
598 _total_memory_to_free(0) { }
599
600 size_t total_count() { return _total_count; }
601 size_t total_memory() { return _total_memory; }
602 size_t total_memory_to_free() { return _total_memory_to_free; }
603
604 bool do_heap_region(HeapRegion* r) {
605 if (r->is_old()) {
606 size_t live = r->live_bytes();
607 size_t size = r->used();
608 size_t reg_size = HeapRegion::GrainBytes;
609 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
610 _total_memory += size;
611 ++_total_count;
612 if (size == reg_size) {
613 // We don't include non-full regions since they are unlikely included in mixed gc
614 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
615 _total_memory_to_free += size - live;
616 }
617 }
618 }
619 return false;
620 }
621 };
622
623
624 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
625 if (!UseG1GC) {
626 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
627 }
628 if (liveness < 0) {
629 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
630 }
631
632 G1CollectedHeap* g1h = G1CollectedHeap::heap();
633 OldRegionsLivenessClosure rli(liveness);
634 g1h->heap_region_iterate(&rli);
635
636 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
637 result->long_at_put(0, rli.total_count());
638 result->long_at_put(1, rli.total_memory());
639 result->long_at_put(2, rli.total_memory_to_free());
640 return (jlongArray) JNIHandles::make_local(THREAD, result);
641 WB_END
642
643 #endif // INCLUDE_G1GC
644
645 // Alloc memory using the test memory type so that we can use that to see if
646 // NMT picks it up correctly
647 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
648 jlong addr = 0;
649 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
650 return addr;
651 WB_END
652
653 // Alloc memory with pseudo call stack. The test can create pseudo malloc
654 // allocation site to stress the malloc tracking.
655 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
656 address pc = (address)(size_t)pseudo_stack;
657 NativeCallStack stack(&pc, 1);
658 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
659 WB_END
660
661 // Alloc memory with pseudo call stack and specific memory type.
662 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
663 address pc = (address)(size_t)pseudo_stack;
664 NativeCallStack stack(&pc, 1);
665 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
666 WB_END
667
668 // Free the memory allocated by NMTAllocTest
669 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
670 os::free((void*)(uintptr_t)mem);
671 WB_END
672
673 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
674 jlong addr = 0;
675
676 addr = (jlong)(uintptr_t)os::reserve_memory(size);
677 MemTracker::record_virtual_memory_type((address)addr, mtTest);
678
679 return addr;
680 WB_END
681
682 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
683 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
684 MemTracker::record_virtual_memory_type((address)addr, mtTest);
685
686 return addr;
687 WB_END
688
689 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
690 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
691 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
692 WB_END
693
694 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
695 os::uncommit_memory((char *)(uintptr_t)addr, size);
696 WB_END
697
698 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
699 os::release_memory((char *)(uintptr_t)addr, size);
700 WB_END
701
702 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
703 int hash_size = MallocSiteTable::hash_buckets();
704 assert(hash_size > 0, "NMT hash_size should be > 0");
705 return (jint)hash_size;
706 WB_END
707
708 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
709 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
710 return (jlong)arena;
711 WB_END
712
713 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
714 Arena* a = (Arena*)arena;
715 delete a;
716 WB_END
717
718 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
719 Arena* a = (Arena*)arena;
720 a->Amalloc(size_t(size));
721 WB_END
722
723 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
724 assert(method != NULL, "method should not be null");
725 ThreadToNativeFromVM ttn(thread);
726 return env->FromReflectedMethod(method);
727 }
728
729 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
730 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
731 private:
732 int _result;
733 const bool _make_not_entrant;
734 public:
735 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
736 _result(0), _make_not_entrant(make_not_entrant) { }
737 int result() const { return _result; }
738
739 void doit() {
740 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
741 if (t->has_last_Java_frame()) {
742 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
743 frame* f = fst.current();
744 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
745 Deoptimization::deoptimize(t, *f);
746 if (_make_not_entrant) {
747 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
748 assert(cm != NULL, "sanity check");
749 cm->make_not_entrant();
750 }
751 ++_result;
752 }
753 }
754 }
755 }
756 }
757 };
758
759 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
760 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
761 VMThread::execute(&op);
762 return op.result();
763 WB_END
764
765 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
766 bool result = false;
767 if (thread->has_last_Java_frame()) {
768 RegisterMap reg_map(thread,
769 RegisterMap::UpdateMap::include,
770 RegisterMap::ProcessFrames::include,
771 RegisterMap::WalkContinuation::skip);
772 javaVFrame *jvf = thread->last_java_vframe(®_map);
773 for (jint d = 0; d < depth && jvf != NULL; d++) {
774 jvf = jvf->java_sender();
775 }
776 result = jvf != NULL && jvf->fr().is_deoptimized_frame();
777 }
778 return result;
779 WB_END
780
781 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
782 CodeCache::mark_all_nmethods_for_deoptimization();
783 Deoptimization::deoptimize_all_marked();
784 WB_END
785
786 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
787 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
788 int result = 0;
789 CHECK_JNI_EXCEPTION_(env, result);
790 MutexLocker mu(Compile_lock);
791 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
792 if (is_osr) {
793 result += mh->mark_osr_nmethods();
794 } else if (mh->code() != NULL) {
795 mh->code()->mark_for_deoptimization();
796 ++result;
797 }
798 result += CodeCache::mark_for_deoptimization(mh());
799 if (result > 0) {
800 Deoptimization::deoptimize_all_marked();
801 }
802 return result;
803 WB_END
804
805 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
806 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
807 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
808 MutexLocker mu(Compile_lock);
809 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
810 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
811 if (code == NULL) {
812 return JNI_FALSE;
813 }
814 return !code->is_marked_for_deoptimization();
815 WB_END
816
817 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
818 if (comp == NULL) {
819 return true;
820 }
821 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
822 if (directive->ExcludeOption) {
823 return true;
824 }
825 return false;
826 }
827
828 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
829 if (is_osr) {
830 return CompilationPolicy::can_be_osr_compiled(mh, level);
831 } else {
832 return CompilationPolicy::can_be_compiled(mh, level);
833 }
834 }
835
836 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
837 if (method == NULL || comp_level > CompilationPolicy::highest_compile_level()) {
838 return false;
839 }
840 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
841 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
842 MutexLocker mu(Compile_lock);
843 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
844
845 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
846 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
847 // to exclude a compilation of 'method'.
848 if (comp_level == CompLevel_any) {
849 // Both compilers could have ExcludeOption set. Check all combinations.
850 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
851 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
852 if (excluded_c1 && excluded_c2) {
853 // Compilation of 'method' excluded by both compilers.
854 return false;
855 }
856
857 if (excluded_c1) {
858 // C1 only has ExcludeOption set: Check if compilable with C2.
859 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
860 } else if (excluded_c2) {
861 // C2 only has ExcludeOption set: Check if compilable with C1.
862 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
863 }
864 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
865 // Compilation of 'method' excluded by compiler used for 'comp_level'.
866 return false;
867 }
868
869 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
870 WB_END
871
872 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
873 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
874 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
875 MutexLocker mu(Compile_lock);
876 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
877 return mh->queued_for_compilation();
878 WB_END
879
880 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
881 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
882 return false; // Intrinsic is not available on a non-existent compilation level.
883 }
884 jmethodID method_id, compilation_context_id;
885 method_id = reflected_method_to_jmid(thread, env, method);
886 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
887 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
888
889 DirectiveSet* directive;
890 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
891 assert(comp != NULL, "compiler not available");
892 if (compilation_context != NULL) {
893 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
894 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
895 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
896 directive = DirectivesStack::getMatchingDirective(cch, comp);
897 } else {
898 // Calling with NULL matches default directive
899 directive = DirectivesStack::getDefaultDirective(comp);
900 }
901 bool result = comp->is_intrinsic_available(mh, directive);
902 DirectivesStack::release(directive);
903 return result;
904 WB_END
905
906 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
907 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
908 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
910 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
911 return (code != NULL ? code->comp_level() : CompLevel_none);
912 WB_END
913
914 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
915 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
916 CHECK_JNI_EXCEPTION(env);
917 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
918 if (is_osr) {
919 mh->set_not_osr_compilable("WhiteBox", comp_level);
920 } else {
921 mh->set_not_compilable("WhiteBox", comp_level);
922 }
923 WB_END
924
925 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
926 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
927 CHECK_JNI_EXCEPTION_(env, 0);
928 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
929 uint cnt = 0;
930 MethodData* mdo = mh->method_data();
931 if (mdo != NULL) {
932 cnt = mdo->decompile_count();
933 }
934 return cnt;
935 WB_END
936
937 // Get the trap count of a method for a specific reason. If the trap count for
938 // that reason did overflow, this includes the overflow trap count of the method.
939 // If 'reason' is NULL, the sum of the traps for all reasons will be returned.
940 // This number includes the overflow trap count if the trap count for any reason
941 // did overflow.
942 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
943 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
944 CHECK_JNI_EXCEPTION_(env, 0);
945 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
946 uint cnt = 0;
947 MethodData* mdo = mh->method_data();
948 if (mdo != NULL) {
949 ResourceMark rm(THREAD);
950 char* reason_str = (reason_obj == NULL) ?
951 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
952 bool overflow = false;
953 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
954 if (reason_str != NULL && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
955 cnt = mdo->trap_count(reason);
956 // Count in the overflow trap count on overflow
957 if (cnt == (uint)-1) {
958 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
959 }
960 break;
961 } else if (reason_str == NULL) {
962 uint c = mdo->trap_count(reason);
963 if (c == (uint)-1) {
964 c = mdo->trap_count_limit();
965 if (!overflow) {
966 // Count overflow trap count just once
967 overflow = true;
968 c += mdo->overflow_trap_count();
969 }
970 }
971 cnt += c;
972 }
973 }
974 }
975 return cnt;
976 WB_END
977
978 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
979 if (reason_obj == NULL && action_obj == NULL) {
980 return Deoptimization::total_deoptimization_count();
981 }
982 ResourceMark rm(THREAD);
983 const char *reason_str = (reason_obj == NULL) ?
984 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
985 const char *action_str = (action_obj == NULL) ?
986 NULL : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
987
988 return Deoptimization::deoptimization_count(reason_str, action_str);
989 WB_END
990
991 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
992 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
993 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
994 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
995 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
996 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
997 WB_END
998
999 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1000 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1001 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1002 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1003 bool result = mh->dont_inline();
1004 mh->set_dont_inline(value == JNI_TRUE);
1005 return result;
1006 WB_END
1007
1008 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1009 if (comp_level == CompLevel_any) {
1010 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1011 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1012 } else {
1013 return CompileBroker::queue_size(comp_level);
1014 }
1015 WB_END
1016
1017 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1018 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1019 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1020 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1021 bool result = mh->force_inline();
1022 mh->set_force_inline(value == JNI_TRUE);
1023 return result;
1024 WB_END
1025
1026 #ifdef LINUX
1027 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1028 const char* proc_self_cgroup,
1029 const char* proc_self_mountinfo,
1030 u1* cg_flags) {
1031 CgroupInfo cg_infos[CG_INFO_LENGTH];
1032 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1033 proc_self_cgroup,
1034 proc_self_mountinfo, cg_flags);
1035 }
1036 #endif
1037
1038 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1039 // Screen for unavailable/bad comp level or null method
1040 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1041 if (method == NULL) {
1042 tty->print_cr("WB error: request to compile NULL method");
1043 return false;
1044 }
1045 if (comp_level > CompilationPolicy::highest_compile_level()) {
1046 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1047 return false;
1048 }
1049 if (comp == NULL) {
1050 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1051 return false;
1052 }
1053
1054 // Check if compilation is blocking
1055 methodHandle mh(THREAD, method);
1056 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1057 bool is_blocking = !directive->BackgroundCompilationOption;
1058 DirectivesStack::release(directive);
1059
1060 // Compile method and check result
1061 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1062 MutexLocker mu(THREAD, Compile_lock);
1063 bool is_queued = mh->queued_for_compilation();
1064 if ((!is_blocking && is_queued) || nm != NULL) {
1065 return true;
1066 }
1067 // Check code again because compilation may be finished before Compile_lock is acquired.
1068 if (bci == InvocationEntryBci) {
1069 CompiledMethod* code = mh->code();
1070 if (code != NULL && code->as_nmethod_or_null() != NULL) {
1071 return true;
1072 }
1073 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != NULL) {
1074 return true;
1075 }
1076 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1077 mh->print_short_name(tty);
1078 tty->cr();
1079 if (is_blocking && is_queued) {
1080 tty->print_cr("WB error: blocking compilation is still in queue!");
1081 }
1082 return false;
1083 }
1084
1085 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1086 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1087 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1088 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1089 WB_END
1090
1091 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1092 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1093 Method* clinit = ik->class_initializer();
1094 if (clinit == NULL || clinit->method_holder()->is_not_initialized()) {
1095 return false;
1096 }
1097 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1098 WB_END
1099
1100 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1101 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1102 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1103
1104 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1105 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1106 bool result = directive->PrintAssemblyOption;
1107 DirectivesStack::release(directive);
1108
1109 return result;
1110 WB_END
1111
1112 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1113 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1114 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1115
1116 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1117
1118 ResourceMark rm(THREAD);
1119 const char* error_msg = NULL;
1120 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1121 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1122
1123 if (m == NULL) {
1124 assert(error_msg != NULL, "Always have an error message");
1125 tty->print_cr("Got error: %s", error_msg);
1126 return -1; // Pattern failed
1127 }
1128
1129 // Pattern works - now check if it matches
1130 int result;
1131 if (m->match(mh, InlineMatcher::force_inline)) {
1132 result = 2; // Force inline match
1133 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1134 result = 1; // Dont inline match
1135 } else {
1136 result = 0; // No match
1137 }
1138 delete m;
1139 return result;
1140 WB_END
1141
1142 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1143 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1144 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1145
1146 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1147
1148 ResourceMark rm;
1149 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1150
1151 const char* error_msg = NULL;
1152
1153 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1154 if (m == NULL) {
1155 assert(error_msg != NULL, "Must have error_msg");
1156 tty->print_cr("Got error: %s", error_msg);
1157 return -1;
1158 }
1159
1160 // Pattern works - now check if it matches
1161 int result = m->matches(mh);
1162 delete m;
1163 assert(result == 0 || result == 1, "Result out of range");
1164 return result;
1165 WB_END
1166
1167 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1168 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1169 CHECK_JNI_EXCEPTION(env);
1170 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1171
1172 MethodData* mdo = mh->method_data();
1173 if (mdo == NULL) {
1174 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1175 mdo = mh->method_data();
1176 }
1177 mdo->init();
1178 InvocationCounter* icnt = mdo->invocation_counter();
1179 InvocationCounter* bcnt = mdo->backedge_counter();
1180 // set i-counter according to CompilationPolicy::is_method_profiled
1181 icnt->set(Tier4MinInvocationThreshold);
1182 bcnt->set(Tier4CompileThreshold);
1183 WB_END
1184
1185 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1186 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1187 CHECK_JNI_EXCEPTION(env);
1188 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1189 MutexLocker mu(THREAD, Compile_lock);
1190 MethodData* mdo = mh->method_data();
1191 MethodCounters* mcs = mh->method_counters();
1192
1193 if (mdo != NULL) {
1194 mdo->init();
1195 ResourceMark rm(THREAD);
1196 int arg_count = mdo->method()->size_of_parameters();
1197 for (int i = 0; i < arg_count; i++) {
1198 mdo->set_arg_modified(i, 0);
1199 }
1200 MutexLocker mu(THREAD, mdo->extra_data_lock());
1201 mdo->clean_method_data(/*always_clean*/true);
1202 }
1203
1204 mh->clear_not_c1_compilable();
1205 mh->clear_not_c2_compilable();
1206 mh->clear_not_c2_osr_compilable();
1207 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1208 if (mcs != NULL) {
1209 mcs->clear_counters();
1210 }
1211 WB_END
1212
1213 template <typename T, int type_enum>
1214 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1215 if (name == NULL) {
1216 return false;
1217 }
1218 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1219 const char* flag_name = env->GetStringUTFChars(name, NULL);
1220 CHECK_JNI_EXCEPTION_(env, false);
1221 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1222 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1223 env->ReleaseStringUTFChars(name, flag_name);
1224 return (result == JVMFlag::SUCCESS);
1225 }
1226
1227 template <typename T, int type_enum>
1228 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1229 if (name == NULL) {
1230 return false;
1231 }
1232 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1233 const char* flag_name = env->GetStringUTFChars(name, NULL);
1234 CHECK_JNI_EXCEPTION_(env, false);
1235 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1236 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1237 env->ReleaseStringUTFChars(name, flag_name);
1238 return (result == JVMFlag::SUCCESS);
1239 }
1240
1241 template <typename T>
1242 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1243 ResourceMark rm(thread);
1244 jclass clazz = env->FindClass(name->as_C_string());
1245 CHECK_JNI_EXCEPTION_(env, NULL);
1246 jmethodID methodID = env->GetStaticMethodID(clazz,
1247 vmSymbols::valueOf_name()->as_C_string(),
1248 sig->as_C_string());
1249 CHECK_JNI_EXCEPTION_(env, NULL);
1250 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1251 CHECK_JNI_EXCEPTION_(env, NULL);
1252 return result;
1253 }
1254
1255 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1256 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1257 }
1258 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1259 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1260 }
1261 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1262 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1263 }
1264 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1265 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1266 }*/
1267 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1268 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1269 }
1270
1271 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1272 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1273 const char* flag_name = env->GetStringUTFChars(name, NULL);
1274 CHECK_JNI_EXCEPTION_(env, NULL);
1275 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1276 env->ReleaseStringUTFChars(name, flag_name);
1277 return result;
1278 }
1279
1280 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1281 const JVMFlag* flag = getVMFlag(thread, env, name);
1282 return (flag != NULL) && flag->is_constant_in_binary();
1283 WB_END
1284
1285 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1286 const JVMFlag* flag = getVMFlag(thread, env, name);
1287 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1288 WB_END
1289
1290 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1291 bool result;
1292 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1293 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1294 return booleanBox(thread, env, result);
1295 }
1296 return NULL;
1297 WB_END
1298
1299 template <typename T, int type_enum>
1300 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1301 T result;
1302 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1303 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1304 return longBox(thread, env, result);
1305 }
1306 return NULL;
1307 }
1308
1309 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1310 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1311 WB_END
1312
1313 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1314 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1315 WB_END
1316
1317 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1318 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1319 WB_END
1320
1321 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1322 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1323 WB_END
1324
1325 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1326 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1327 WB_END
1328
1329 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1330 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1331 WB_END
1332
1333 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1334 double result;
1335 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1336 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1337 return doubleBox(thread, env, result);
1338 }
1339 return NULL;
1340 WB_END
1341
1342 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1343 ccstr ccstrResult;
1344 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1345 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1346 jstring result = env->NewStringUTF(ccstrResult);
1347 CHECK_JNI_EXCEPTION_(env, NULL);
1348 return result;
1349 }
1350 return NULL;
1351 WB_END
1352
1353 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1354 bool result = value == JNI_TRUE ? true : false;
1355 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1356 WB_END
1357
1358 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1359 int result = value;
1360 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1361 WB_END
1362
1363 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1364 uint result = value;
1365 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1366 WB_END
1367
1368 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1369 intx result = value;
1370 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1371 WB_END
1372
1373 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1374 uintx result = value;
1375 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1376 WB_END
1377
1378 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1379 uint64_t result = value;
1380 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1381 WB_END
1382
1383 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1384 size_t result = value;
1385 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1386 WB_END
1387
1388 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1389 double result = value;
1390 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1391 WB_END
1392
1393 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1394 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1395 const char* ccstrValue;
1396 if (value == NULL) {
1397 ccstrValue = NULL;
1398 }
1399 else {
1400 ccstrValue = env->GetStringUTFChars(value, NULL);
1401 CHECK_JNI_EXCEPTION(env);
1402 }
1403 {
1404 ccstr param = ccstrValue;
1405 ThreadInVMfromNative ttvfn(thread); // back to VM
1406 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1407 assert(param == NULL, "old value is freed automatically and not returned");
1408 }
1409 }
1410 if (value != NULL) {
1411 env->ReleaseStringUTFChars(value, ccstrValue);
1412 }
1413 WB_END
1414
1415 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1416 WhiteBox::compilation_locked = true;
1417 WB_END
1418
1419 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1420 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1421 WhiteBox::compilation_locked = false;
1422 mo.notify_all();
1423 WB_END
1424
1425 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1426 ResourceMark rm(THREAD);
1427 int len;
1428 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1429 return (StringTable::lookup(name, len) != NULL);
1430 WB_END
1431
1432 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1433 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1434 Universe::heap()->collect(GCCause::_wb_full_gc);
1435 #if INCLUDE_G1GC
1436 if (UseG1GC) {
1437 // Needs to be cleared explicitly for G1
1438 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1439 }
1440 #endif // INCLUDE_G1GC
1441 WB_END
1442
1443 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1444 Universe::heap()->collect(GCCause::_wb_young_gc);
1445 WB_END
1446
1447 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1448 // static+volatile in order to force the read to happen
1449 // (not be eliminated by the compiler)
1450 static char c;
1451 static volatile char* p;
1452
1453 p = os::reserve_memory(os::vm_allocation_granularity());
1454 if (p == NULL) {
1455 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1456 }
1457
1458 c = *p;
1459 WB_END
1460
1461 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1462 const char* features = VM_Version::features_string();
1463 ThreadToNativeFromVM ttn(thread);
1464 jstring features_string = env->NewStringUTF(features);
1465
1466 CHECK_JNI_EXCEPTION_(env, NULL);
1467
1468 return features_string;
1469 WB_END
1470
1471 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1472 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1473 return CodeCache::get_code_heap(code)->code_blob_type();
1474 }
1475
1476 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1477 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1478 return CodeCache::get_code_heap(blob_type);
1479 }
1480
1481 struct CodeBlobStub {
1482 CodeBlobStub(const CodeBlob* blob) :
1483 name(os::strdup(blob->name())),
1484 size(blob->size()),
1485 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1486 address((jlong) blob) { }
1487 ~CodeBlobStub() { os::free((void*) name); }
1488 const char* const name;
1489 const jint size;
1490 const jint blob_type;
1491 const jlong address;
1492 };
1493
1494 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1495 ResourceMark rm;
1496 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1497 CHECK_JNI_EXCEPTION_(env, NULL);
1498 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1499
1500 jstring name = env->NewStringUTF(cb->name);
1501 CHECK_JNI_EXCEPTION_(env, NULL);
1502 env->SetObjectArrayElement(result, 0, name);
1503
1504 jobject obj = integerBox(thread, env, cb->size);
1505 CHECK_JNI_EXCEPTION_(env, NULL);
1506 env->SetObjectArrayElement(result, 1, obj);
1507
1508 obj = integerBox(thread, env, cb->blob_type);
1509 CHECK_JNI_EXCEPTION_(env, NULL);
1510 env->SetObjectArrayElement(result, 2, obj);
1511
1512 obj = longBox(thread, env, cb->address);
1513 CHECK_JNI_EXCEPTION_(env, NULL);
1514 env->SetObjectArrayElement(result, 3, obj);
1515
1516 return result;
1517 }
1518
1519 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1520 ResourceMark rm(THREAD);
1521 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1522 CHECK_JNI_EXCEPTION_(env, NULL);
1523 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1524 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1525 jobjectArray result = NULL;
1526 if (code == NULL) {
1527 return result;
1528 }
1529 int comp_level = code->comp_level();
1530 int insts_size = code->insts_size();
1531
1532 ThreadToNativeFromVM ttn(thread);
1533 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1534 CHECK_JNI_EXCEPTION_(env, NULL);
1535 result = env->NewObjectArray(5, clazz, NULL);
1536 if (result == NULL) {
1537 return result;
1538 }
1539
1540 CodeBlobStub stub(code);
1541 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1542 CHECK_JNI_EXCEPTION_(env, NULL);
1543 env->SetObjectArrayElement(result, 0, codeBlob);
1544
1545 jobject level = integerBox(thread, env, comp_level);
1546 CHECK_JNI_EXCEPTION_(env, NULL);
1547 env->SetObjectArrayElement(result, 1, level);
1548
1549 jbyteArray insts = env->NewByteArray(insts_size);
1550 CHECK_JNI_EXCEPTION_(env, NULL);
1551 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1552 env->SetObjectArrayElement(result, 2, insts);
1553
1554 jobject id = integerBox(thread, env, code->compile_id());
1555 CHECK_JNI_EXCEPTION_(env, NULL);
1556 env->SetObjectArrayElement(result, 3, id);
1557
1558 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1559 CHECK_JNI_EXCEPTION_(env, NULL);
1560 env->SetObjectArrayElement(result, 4, entry_point);
1561
1562 return result;
1563 WB_END
1564
1565 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1566 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1567 BufferBlob* blob;
1568 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1569 if (full_size < size) {
1570 full_size += align_up(size - full_size, oopSize);
1571 }
1572 {
1573 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1574 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1575 if (blob != NULL) {
1576 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1577 }
1578 }
1579 // Track memory usage statistic after releasing CodeCache_lock
1580 MemoryService::track_code_cache_memory_usage();
1581 return blob;
1582 }
1583
1584 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1585 if (size < 0) {
1586 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1587 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1588 }
1589 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1590 WB_END
1591
1592 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1593 if (addr == 0) {
1594 return;
1595 }
1596 BufferBlob::free((BufferBlob*) addr);
1597 WB_END
1598
1599 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1600 ResourceMark rm;
1601 GrowableArray<CodeBlobStub*> blobs;
1602 {
1603 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1604 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1605 if (heap == NULL) {
1606 return NULL;
1607 }
1608 for (CodeBlob* cb = (CodeBlob*) heap->first();
1609 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1610 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1611 new (stub) CodeBlobStub(cb);
1612 blobs.append(stub);
1613 }
1614 }
1615 ThreadToNativeFromVM ttn(thread);
1616 jobjectArray result = NULL;
1617 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1618 CHECK_JNI_EXCEPTION_(env, NULL);
1619 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1620 CHECK_JNI_EXCEPTION_(env, NULL);
1621 if (result == NULL) {
1622 return result;
1623 }
1624 int i = 0;
1625 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1626 it != blobs.end(); ++it) {
1627 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1628 CHECK_JNI_EXCEPTION_(env, NULL);
1629 env->SetObjectArrayElement(result, i, obj);
1630 CHECK_JNI_EXCEPTION_(env, NULL);
1631 ++i;
1632 }
1633 return result;
1634 WB_END
1635
1636 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1637 return CompileBroker::get_compilation_activity_mode();
1638 WB_END
1639
1640 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1641 if (addr == 0) {
1642 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1643 "WB_GetCodeBlob: addr is null");
1644 }
1645 ThreadToNativeFromVM ttn(thread);
1646 CodeBlobStub stub((CodeBlob*) addr);
1647 return codeBlob2objectArray(thread, env, &stub);
1648 WB_END
1649
1650 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1651 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1652 CHECK_JNI_EXCEPTION_(env, 0);
1653 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1654 return (jlong) mh->method_data();
1655 WB_END
1656
1657 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1658 return (jlong) thread->stack_size();
1659 WB_END
1660
1661 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1662 return (jlong) thread->stack_overflow_state()->stack_available(
1663 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1664 WB_END
1665
1666
1667 int WhiteBox::array_bytes_to_length(size_t bytes) {
1668 return Array<u1>::bytes_to_length(bytes);
1669 }
1670
1671 ///////////////
1672 // MetaspaceTestContext and MetaspaceTestArena
1673 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1674 metaspace::MetaspaceTestContext* context =
1675 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1676 return (jlong)p2i(context);
1677 WB_END
1678
1679 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1680 delete (metaspace::MetaspaceTestContext*) context;
1681 WB_END
1682
1683 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1684 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1685 context0->purge_area();
1686 WB_END
1687
1688 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1689 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1690 context0->print_on(tty);
1691 WB_END
1692
1693 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1694 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1695 return context0->committed_words();
1696 WB_END
1697
1698 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1699 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1700 return context0->used_words();
1701 WB_END
1702
1703 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1704 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1705 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1706 return (jlong)p2i(context0->create_arena(type));
1707 WB_END
1708
1709 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1710 delete (metaspace::MetaspaceTestArena*) arena;
1711 WB_END
1712
1713 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1714 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1715 MetaWord* p = arena0->allocate((size_t) word_size);
1716 return (jlong)p2i(p);
1717 WB_END
1718
1719 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1720 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1721 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1722 WB_END
1723
1724 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1725 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1726 WB_END
1727
1728 //////////////
1729
1730 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1731 if (size < 0) {
1732 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1733 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1734 }
1735
1736 oop class_loader_oop = JNIHandles::resolve(class_loader);
1737 ClassLoaderData* cld = class_loader_oop != NULL
1738 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1739 : ClassLoaderData::the_null_class_loader_data();
1740
1741 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1742
1743 return (jlong)(uintptr_t)metadata;
1744 WB_END
1745
1746 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1747 jstring version, jstring location, jobjectArray packages))
1748 Handle h_module (THREAD, JNIHandles::resolve(module));
1749 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1750 WB_END
1751
1752 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1753 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1754 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1755 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1756 WB_END
1757
1758 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1759 Handle h_module (THREAD, JNIHandles::resolve(module));
1760 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1761 WB_END
1762
1763 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1764 Handle h_module (THREAD, JNIHandles::resolve(module));
1765 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1766 WB_END
1767
1768 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1769 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1770 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1771 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1772 WB_END
1773
1774 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1775 if (inc < 0) {
1776 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1777 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1778 }
1779
1780 jlong max_size_t = (jlong) ((size_t) -1);
1781 if (inc > max_size_t) {
1782 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1783 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1784 }
1785
1786 size_t new_cap_until_GC = 0;
1787 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1788 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1789 if (!success) {
1790 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1791 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1792 "due to contention with another thread");
1793 }
1794 return (jlong) new_cap_until_GC;
1795 WB_END
1796
1797 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1798 return (jlong) MetaspaceGC::capacity_until_GC();
1799 WB_END
1800
1801 // The function is only valid when CDS is available.
1802 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1803 #if INCLUDE_CDS
1804 return (jlong)MetaspaceShared::core_region_alignment();
1805 #else
1806 ShouldNotReachHere();
1807 return 0L;
1808 #endif
1809 WB_END
1810
1811 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1812 oop obj_oop = JNIHandles::resolve(obj);
1813 return (jboolean) obj_oop->mark().has_monitor();
1814 WB_END
1815
1816 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1817 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1818 return ObjectSynchronizer::request_deflate_idle_monitors();
1819 WB_END
1820
1821 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1822 VM_ForceSafepoint force_safepoint_op;
1823 VMThread::execute(&force_safepoint_op);
1824 WB_END
1825
1826 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1827 nullStream dev_null;
1828 ClassLoaderStatsVMOperation force_op(&dev_null);
1829 VMThread::execute(&force_op);
1830 WB_END
1831
1832 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1833 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1834 return (jlong) ik->constants();
1835 WB_END
1836
1837 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1838 return ConstantPool::CPCACHE_INDEX_TAG;
1839 WB_END
1840
1841 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1842 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1843 ConstantPool* cp = ik->constants();
1844 if (cp->cache() == NULL) {
1845 return -1;
1846 }
1847 return cp->cache()->length();
1848 WB_END
1849
1850 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1851 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1852 ConstantPool* cp = ik->constants();
1853 if (cp->cache() == NULL) {
1854 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1855 }
1856 jint cpci = index;
1857 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1858 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1859 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1860 }
1861 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1862 return cpi;
1863 WB_END
1864
1865 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1866 return ConstantPool::encode_invokedynamic_index(index);
1867 WB_END
1868
1869 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
1870 oop aoop = JNIHandles::resolve(thing);
1871 if (!aoop->is_instance()) {
1872 return NULL;
1873 }
1874 instanceHandle ih(THREAD, (instanceOop) aoop);
1875 InstanceKlass* klass = InstanceKlass::cast(ih->klass());
1876 if (klass->nonstatic_oop_map_count() == 0) {
1877 return NULL;
1878 }
1879 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
1880 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
1881 int oop_count = 0;
1882 while (map < end) {
1883 oop_count += map->count();
1884 map++;
1885 }
1886
1887 objArrayHandle result_array =
1888 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL);
1889 map = klass->start_of_nonstatic_oop_maps();
1890 int index = 0;
1891 while (map < end) {
1892 int offset = map->offset();
1893 for (unsigned int j = 0; j < map->count(); j++) {
1894 result_array->obj_at_put(index++, ih->obj_field(offset));
1895 offset += heapOopSize;
1896 }
1897 map++;
1898 }
1899 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1900 WB_END
1901
1902 class CollectOops : public BasicOopIterateClosure {
1903 public:
1904 GrowableArray<Handle>* array;
1905
1906 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
1907 objArrayHandle result_array =
1908 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL);
1909 for (int i = 0 ; i < array->length(); i++) {
1910 result_array->obj_at_put(i, array->at(i)());
1911 }
1912 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1913 }
1914
1915 void add_oop(oop o) {
1916 Handle oh = Handle(Thread::current(), o);
1917 // Value might be oop, but JLS can't see as Object, just iterate through it...
1918 if (oh != NULL && oh->is_inline_type()) {
1919 oh->oop_iterate(this);
1920 } else {
1921 array->append(oh);
1922 }
1923 }
1924
1925 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); }
1926 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); }
1927 };
1928
1929
1930 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
1931 ResourceMark rm(thread);
1932 Handle objh(thread, JNIHandles::resolve(thing));
1933 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1934 CollectOops collectOops;
1935 collectOops.array = array;
1936 objh->oop_iterate(&collectOops);
1937 return collectOops.create_jni_result(env, THREAD);
1938 WB_END
1939
1940 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
1941 ResourceMark rm(THREAD);
1942 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1943 CollectOops collectOops;
1944 collectOops.array = array;
1945 StackFrameStream sfs(thread, false /* update */, true /* process_frames */);
1946 while (depth > 0) { // Skip the native WB API frame
1947 sfs.next();
1948 frame* f = sfs.current();
1949 f->oops_do(&collectOops, NULL, sfs.register_map());
1950 depth--;
1951 }
1952 return collectOops.create_jni_result(env, THREAD);
1953 WB_END
1954
1955
1956 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1957 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1958 VMThread::execute(&clear_ics);
1959 WB_END
1960
1961 template <typename T>
1962 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1963 assert(value != NULL, "sanity");
1964 if (method == NULL || name == NULL) {
1965 return false;
1966 }
1967 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1968 CHECK_JNI_EXCEPTION_(env, false);
1969 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1970 // can't be in VM when we call JNI
1971 ThreadToNativeFromVM ttnfv(thread);
1972 const char* flag_name = env->GetStringUTFChars(name, NULL);
1973 CHECK_JNI_EXCEPTION_(env, false);
1974 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1975 env->ReleaseStringUTFChars(name, flag_name);
1976 if (option == CompileCommand::Unknown) {
1977 return false;
1978 }
1979 if (!CompilerOracle::option_matches_type(option, *value)) {
1980 return false;
1981 }
1982 return CompilerOracle::has_option_value(mh, option, *value);
1983 }
1984
1985 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1986 bool result;
1987 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1988 // can't be in VM when we call JNI
1989 ThreadToNativeFromVM ttnfv(thread);
1990 return booleanBox(thread, env, result);
1991 }
1992 return NULL;
1993 WB_END
1994
1995 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1996 intx result;
1997 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1998 // can't be in VM when we call JNI
1999 ThreadToNativeFromVM ttnfv(thread);
2000 return longBox(thread, env, result);
2001 }
2002 return NULL;
2003 WB_END
2004
2005 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2006 uintx result;
2007 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2008 // can't be in VM when we call JNI
2009 ThreadToNativeFromVM ttnfv(thread);
2010 return longBox(thread, env, result);
2011 }
2012 return NULL;
2013 WB_END
2014
2015 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2016 double result;
2017 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2018 // can't be in VM when we call JNI
2019 ThreadToNativeFromVM ttnfv(thread);
2020 return doubleBox(thread, env, result);
2021 }
2022 return NULL;
2023 WB_END
2024
2025 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2026 ccstr ccstrResult;
2027 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2028 // can't be in VM when we call JNI
2029 ThreadToNativeFromVM ttnfv(thread);
2030 jstring result = env->NewStringUTF(ccstrResult);
2031 CHECK_JNI_EXCEPTION_(env, NULL);
2032 return result;
2033 }
2034 return NULL;
2035 WB_END
2036
2037 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2038 const char* p = Arguments::get_default_shared_archive_path();
2039 ThreadToNativeFromVM ttn(thread);
2040 jstring path_string = env->NewStringUTF(p);
2041
2042 CHECK_JNI_EXCEPTION_(env, NULL);
2043
2044 return path_string;
2045 WB_END
2046
2047 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2048 return UseSharedSpaces;
2049 WB_END
2050
2051 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2052 #if INCLUDE_CDS
2053 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2054 #else
2055 ShouldNotReachHere();
2056 return (jint)-1;
2057 #endif
2058 WB_END
2059
2060 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2061 #if INCLUDE_CDS
2062 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2063 #else
2064 ShouldNotReachHere();
2065 return (jint)-1;
2066 #endif
2067 WB_END
2068
2069 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2070 return FileMapInfo::memory_mapping_failed();
2071 WB_END
2072
2073 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
2074 oop obj_oop = JNIHandles::resolve(obj);
2075 return Universe::heap()->is_archived_object(obj_oop);
2076 WB_END
2077
2078 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2079 ResourceMark rm(THREAD);
2080 oop str_oop = JNIHandles::resolve(str);
2081 int length;
2082 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2083 return StringTable::lookup_shared(chars, length) == str_oop;
2084 WB_END
2085
2086 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2087 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2088 WB_END
2089
2090 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2091 return ArchiveHeapLoader::closed_regions_mapped();
2092 WB_END
2093
2094 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
2095 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2096 if (k->is_instance_klass()) {
2097 InstanceKlass *ik = InstanceKlass::cast(k);
2098 ConstantPool *cp = ik->constants();
2099 objArrayOop refs = cp->resolved_references();
2100 return (jobject)JNIHandles::make_local(THREAD, refs);
2101 } else {
2102 return NULL;
2103 }
2104 WB_END
2105
2106 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2107 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2108 if (!k->is_instance_klass()) {
2109 return;
2110 }
2111 InstanceKlass *ik = InstanceKlass::cast(k);
2112 ik->link_class(THREAD); // may throw verification error
2113 WB_END
2114
2115 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2116 return ArchiveHeapLoader::open_regions_mapped();
2117 WB_END
2118
2119 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2120 #if INCLUDE_CDS
2121 return true;
2122 #else
2123 return false;
2124 #endif // INCLUDE_CDS
2125 WB_END
2126
2127 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2128 #if COMPILER2_OR_JVMCI
2129 return true;
2130 #else
2131 return false;
2132 #endif
2133 WB_END
2134
2135 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2136 #if INCLUDE_JVMCI
2137 return JVMCIGlobals::gc_supports_jvmci();
2138 #else
2139 return false;
2140 #endif
2141 WB_END
2142
2143 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2144 return HeapShared::can_write();
2145 WB_END
2146
2147
2148 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2149 #if INCLUDE_JFR
2150 return true;
2151 #else
2152 return false;
2153 #endif // INCLUDE_JFR
2154 WB_END
2155
2156 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2157 #if defined(DTRACE_ENABLED)
2158 return true;
2159 #else
2160 return false;
2161 #endif // DTRACE_ENABLED
2162 WB_END
2163
2164 #if INCLUDE_CDS
2165
2166 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2167 ResourceMark rm;
2168 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2169 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2170 return result;
2171 WB_END
2172
2173 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2174 ResourceMark rm;
2175 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2176 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2177 return result;
2178 WB_END
2179
2180 #endif // INCLUDE_CDS
2181
2182 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2183 class ReadMonitorsClosure : public HandshakeClosure {
2184 jboolean _executed;
2185
2186 void do_thread(Thread* th) {
2187 JavaThread* jt = JavaThread::cast(th);
2188 ResourceMark rm;
2189
2190 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2191
2192 if (!jt->has_last_Java_frame()) {
2193 return;
2194 }
2195 RegisterMap rmap(jt,
2196 RegisterMap::UpdateMap::include,
2197 RegisterMap::ProcessFrames::include,
2198 RegisterMap::WalkContinuation::skip);
2199 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != NULL; vf = vf->java_sender()) {
2200 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2201 if (monitors != NULL) {
2202 int len = monitors->length();
2203 // Walk monitors youngest to oldest
2204 for (int i = len - 1; i >= 0; i--) {
2205 MonitorInfo* mon_info = monitors->at(i);
2206 if (mon_info->eliminated()) continue;
2207 oop owner = mon_info->owner();
2208 if (owner != NULL) {
2209 info->append(mon_info);
2210 }
2211 }
2212 }
2213 }
2214 _executed = true;
2215 }
2216
2217 public:
2218 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2219 jboolean executed() const { return _executed; }
2220 };
2221
2222 ReadMonitorsClosure rmc;
2223 if (thread_handle != NULL) {
2224 ThreadsListHandle tlh;
2225 JavaThread* target = nullptr;
2226 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL);
2227 if (is_alive) {
2228 Handshake::execute(&rmc, &tlh, target);
2229 }
2230 }
2231 return rmc.executed();
2232 WB_END
2233
2234 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2235 class TraceSelfClosure : public HandshakeClosure {
2236 jint _num_threads_completed;
2237
2238 void do_thread(Thread* th) {
2239 JavaThread* jt = JavaThread::cast(th);
2240 ResourceMark rm;
2241
2242 jt->print_on(tty);
2243 jt->print_stack_on(tty);
2244 tty->cr();
2245 Atomic::inc(&_num_threads_completed);
2246 }
2247
2248 public:
2249 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2250
2251 jint num_threads_completed() const { return _num_threads_completed; }
2252 };
2253 TraceSelfClosure tsc(Thread::current());
2254
2255 if (all_threads) {
2256 Handshake::execute(&tsc);
2257 } else if (thread_handle != NULL) {
2258 ThreadsListHandle tlh;
2259 JavaThread* target = nullptr;
2260 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL);
2261 if (is_alive) {
2262 Handshake::execute(&tsc, &tlh, target);
2263 }
2264 }
2265 return tsc.num_threads_completed();
2266 WB_END
2267
2268 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2269 class TraceSelfClosure : public AsyncHandshakeClosure {
2270 JavaThread* _self;
2271 void do_thread(Thread* th) {
2272 assert(th->is_Java_thread(), "sanity");
2273 // AsynchHandshake handshakes are only executed by target.
2274 assert(_self == th, "Must be");
2275 assert(Thread::current() == th, "Must be");
2276 JavaThread* jt = JavaThread::cast(th);
2277 ResourceMark rm;
2278 jt->print_on(tty);
2279 jt->print_stack_on(tty);
2280 tty->cr();
2281 }
2282
2283 public:
2284 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2285 };
2286 if (thread_handle != NULL) {
2287 ThreadsListHandle tlh;
2288 JavaThread* target = nullptr;
2289 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, NULL);
2290 if (is_alive) {
2291 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2292 Handshake::execute(tsc, target);
2293 }
2294 }
2295 WB_END
2296
2297 static volatile int _emulated_lock = 0;
2298
2299 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2300 JavaThread* self = JavaThread::current();
2301
2302 {
2303 // Before trying to acquire the lock transition into a safepoint safe state.
2304 // Otherwise if either suspender or suspendee blocks for a safepoint
2305 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2306 // the lock without allowing the safepoint to progress.
2307 ThreadBlockInVM tbivm(self);
2308
2309 // We will deadlock here if we are 'suspender' and 'suspendee'
2310 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2311 // at the right place.
2312 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2313 assert(_emulated_lock == 1, "Must be locked");
2314
2315 // Sleep much longer in suspendee to force situation where
2316 // 'suspender' is waiting above to acquire lock.
2317 os::naked_short_sleep(suspender ? 1 : 10);
2318 }
2319 Atomic::store(&_emulated_lock, 0);
2320 WB_END
2321
2322 // Some convenience methods to deal with objects from java
2323 int WhiteBox::offset_for_field(const char* field_name, oop object,
2324 Symbol* signature_symbol) {
2325 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2326
2327 //Get the class of our object
2328 Klass* arg_klass = object->klass();
2329 //Turn it into an instance-klass
2330 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2331
2332 //Create symbols to look for in the class
2333 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2334
2335 //To be filled in with an offset of the field we're looking for
2336 fieldDescriptor fd;
2337
2338 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2339 if (res == NULL) {
2340 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2341 name_symbol->as_C_string());
2342 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2343 }
2344
2345 //fetch the field at the offset we've found
2346 int dest_offset = fd.offset();
2347
2348 return dest_offset;
2349 }
2350
2351
2352 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2353 int offset = offset_for_field(field_name, object,
2354 vmSymbols::string_signature());
2355 oop string = object->obj_field(offset);
2356 if (string == NULL) {
2357 return NULL;
2358 }
2359 const char* ret = java_lang_String::as_utf8_string(string);
2360 return ret;
2361 }
2362
2363 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2364 int offset =
2365 offset_for_field(field_name, object, vmSymbols::bool_signature());
2366 bool ret = (object->bool_field(offset) == JNI_TRUE);
2367 return ret;
2368 }
2369
2370 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2371 ResourceMark rm;
2372 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2373 const char* klass_name = klass->external_name();
2374
2375 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2376
2377 // one by one registration natives for exception catching
2378 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2379 CHECK_JNI_EXCEPTION(env);
2380 for (int i = 0, n = method_count; i < n; ++i) {
2381 // Skip dummy entries
2382 if (method_array[i].fnPtr == NULL) continue;
2383 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2384 jthrowable throwable_obj = env->ExceptionOccurred();
2385 if (throwable_obj != NULL) {
2386 env->ExceptionClear();
2387 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2388 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2389 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2390 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2391 klass_name, method_array[i].name, method_array[i].signature);
2392 }
2393 } else {
2394 // Registration failed unexpectedly.
2395 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2396 klass_name, method_array[i].name, method_array[i].signature);
2397 env->UnregisterNatives(wbclass);
2398 break;
2399 }
2400 }
2401 }
2402 }
2403
2404 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2405 // can't be in VM when we call JNI
2406 ThreadToNativeFromVM ttnfv(thread);
2407 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2408 CHECK_JNI_EXCEPTION_(env, 0);
2409 int ret;
2410 {
2411 ThreadInVMfromNative ttvfn(thread); // back to VM
2412 ret = DirectivesParser::parse_string(dir, tty);
2413 }
2414 env->ReleaseStringUTFChars(compDirect, dir);
2415 // -1 for error parsing directive. Return 0 as number of directives added.
2416 if (ret == -1) {
2417 ret = 0;
2418 }
2419 return (jint) ret;
2420 WB_END
2421
2422 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2423 DirectivesStack::pop(count);
2424 WB_END
2425
2426 // Checks that the library libfile has the noexecstack bit set.
2427 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2428 jboolean ret = false;
2429 #ifdef LINUX
2430 // Can't be in VM when we call JNI.
2431 ThreadToNativeFromVM ttnfv(thread);
2432 const char* lf = env->GetStringUTFChars(libfile, NULL);
2433 CHECK_JNI_EXCEPTION_(env, 0);
2434 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2435 env->ReleaseStringUTFChars(libfile, lf);
2436 #endif
2437 return ret;
2438 WB_END
2439
2440 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2441 LINUX_ONLY(return OSContainer::is_containerized();)
2442 return false;
2443 WB_END
2444
2445 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2446 jobject o,
2447 jstring proc_cgroups,
2448 jstring proc_self_cgroup,
2449 jstring proc_self_mountinfo))
2450 jint ret = 0;
2451 #ifdef LINUX
2452 ThreadToNativeFromVM ttnfv(thread);
2453 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL);
2454 CHECK_JNI_EXCEPTION_(env, 0);
2455 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL);
2456 CHECK_JNI_EXCEPTION_(env, 0);
2457 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL);
2458 CHECK_JNI_EXCEPTION_(env, 0);
2459 u1 cg_type_flags = 0;
2460 // This sets cg_type_flags
2461 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2462 ret = (jint)cg_type_flags;
2463 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2464 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2465 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2466 #endif
2467 return ret;
2468 WB_END
2469
2470 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2471 os::print_os_info(tty);
2472 WB_END
2473
2474 // Elf decoder
2475 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2476 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2477 ElfFile::_do_not_cache_elf_section = true;
2478 #endif
2479 WB_END
2480
2481 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2482 return (jlong) ResolvedMethodTable::items_count();
2483 WB_END
2484
2485 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2486 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2487 WB_END
2488
2489 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2490 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2491 // Return size in bytes.
2492 return k->size() * wordSize;
2493 WB_END
2494
2495 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2496 // It explains how the thread's priority field is used for test state coordination.
2497 //
2498 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2499 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2500 jlong tid = java_lang_Thread::thread_id(target_oop);
2501 JavaThread* target = java_lang_Thread::thread(target_oop);
2502
2503 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2504 ThreadsListHandle tlh;
2505
2506 // Look up the target thread by tid to ensure it is present
2507 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2508 if (t == NULL) {
2509 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2510 }
2511
2512 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2513 // Allow target to terminate by boosting priority
2514 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2515
2516 // Now wait for the target to terminate
2517 while (!target->is_terminated()) {
2518 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2519 os::naked_short_sleep(0);
2520 }
2521
2522 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2523
2524 // Now release the GC inducing thread - we have to re-resolve the external oop that
2525 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2526 oop original = JNIHandles::resolve_non_null(target_handle);
2527 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2528
2529 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2530
2531 // The Java code should be creating garbage and triggering GC, which would potentially move
2532 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2533 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2534 // kick in.
2535 for (int i = 0; i < 5; i++) {
2536 oop original = JNIHandles::resolve_non_null(target_handle);
2537 oop current = t->threadObj();
2538 if (original != current) {
2539 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2540 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2541 } else {
2542 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2543 ThreadBlockInVM tbivm(thread);
2544 os::naked_short_sleep(50);
2545 }
2546 }
2547 WB_END
2548
2549 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2550 ResourceMark rm; // for verify
2551 stringStream st;
2552 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2553 frame* current_frame = fst.current();
2554 if (log) {
2555 current_frame->print_value_on(&st, NULL);
2556 }
2557 current_frame->verify(fst.register_map());
2558 }
2559 if (log) {
2560 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2561 tty->print_raw(st.freeze());
2562 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2563 }
2564 WB_END
2565
2566 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2567 #if INCLUDE_JVMTI
2568 return JNI_TRUE;
2569 #else
2570 return JNI_FALSE;
2571 #endif
2572 WB_END
2573
2574 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2575 os::naked_short_sleep(time);
2576 WB_END
2577
2578 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2579 ThreadToNativeFromVM ttn(thread);
2580 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2581 CHECK_JNI_EXCEPTION_(env, NULL);
2582 return info_string;
2583 WB_END
2584
2585 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2586 GCLocker::lock_critical(thread);
2587 WB_END
2588
2589 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2590 GCLocker::unlock_critical(thread);
2591 WB_END
2592
2593 #define CC (char*)
2594
2595 static JNINativeMethod methods[] = {
2596 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2597 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2598 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2599 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2600 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2601 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2602 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2603 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2604 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2605 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2606 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2607 {CC"parseCommandLine0",
2608 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2609 (void*) &WB_ParseCommandLine
2610 },
2611 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2612 (void*)&WB_AddToBootstrapClassLoaderSearch},
2613 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2614 (void*)&WB_AddToSystemClassLoaderSearch},
2615 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2616 (void*)&WB_GetCompressedOopsMaxHeapSize},
2617 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2618 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2619 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2620 #if INCLUDE_CDS
2621 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2622 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2623 #endif
2624 #if INCLUDE_G1GC
2625 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2626 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2627 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2628 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2629 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2630 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2631 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2632 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2633 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2634 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2635 (void*)&WB_G1AuxiliaryMemoryUsage },
2636 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2637 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2638 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2639 #endif // INCLUDE_G1GC
2640 #if INCLUDE_PARALLELGC
2641 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2642 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2643 #endif
2644 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2645 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2646 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2647 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2648 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2649 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2650 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2651 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2652 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2653 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2654 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2655 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2656 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2657 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2658 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2659 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2660 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2661 (void*)&WB_DeoptimizeMethod },
2662 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2663 (void*)&WB_IsMethodCompiled },
2664 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2665 (void*)&WB_IsMethodCompilable},
2666 {CC"isMethodQueuedForCompilation0",
2667 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2668 {CC"isIntrinsicAvailable0",
2669 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2670 (void*)&WB_IsIntrinsicAvailable},
2671 {CC"makeMethodNotCompilable0",
2672 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2673 {CC"testSetDontInlineMethod0",
2674 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2675 {CC"getMethodCompilationLevel0",
2676 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2677 {CC"getMethodDecompileCount0",
2678 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2679 {CC"getMethodTrapCount0",
2680 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2681 (void*)&WB_GetMethodTrapCount},
2682 {CC"getDeoptCount0",
2683 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2684 {CC"getMethodEntryBci0",
2685 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2686 {CC"getCompileQueueSize",
2687 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2688 {CC"testSetForceInlineMethod0",
2689 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2690 {CC"enqueueMethodForCompilation0",
2691 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2692 {CC"enqueueInitializerForCompilation0",
2693 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2694 {CC"markMethodProfiled",
2695 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2696 {CC"clearMethodState0",
2697 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2698 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2699 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2700 {CC"matchesMethod",
2701 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2702 (void*)&WB_MatchesMethod},
2703 {CC"matchesInline",
2704 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2705 (void*)&WB_MatchesInline},
2706 {CC"shouldPrintAssembly",
2707 CC"(Ljava/lang/reflect/Executable;I)Z",
2708 (void*)&WB_ShouldPrintAssembly},
2709
2710 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2711 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2712 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2713 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2714 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2715 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2716 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2717 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2718 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2719 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2720 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2721 (void*)&WB_SetStringVMFlag},
2722 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2723 (void*)&WB_GetBooleanVMFlag},
2724 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2725 (void*)&WB_GetIntVMFlag},
2726 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2727 (void*)&WB_GetUintVMFlag},
2728 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2729 (void*)&WB_GetIntxVMFlag},
2730 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2731 (void*)&WB_GetUintxVMFlag},
2732 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2733 (void*)&WB_GetUint64VMFlag},
2734 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2735 (void*)&WB_GetSizeTVMFlag},
2736 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2737 (void*)&WB_GetDoubleVMFlag},
2738 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2739 (void*)&WB_GetStringVMFlag},
2740 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2741 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2742 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2743 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2744 {CC"allocateMetaspace",
2745 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2746 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2747 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2748 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2749 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2750 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2751 (void*)&WB_GetNMethod },
2752 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2753 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2754 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2755 {CC"getCompilationActivityMode",
2756 CC"()I", (void*)&WB_GetCompilationActivityMode},
2757 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2758 (void*)&WB_GetMethodData },
2759 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2760 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2761 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2762 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2763 (void*)&WB_DefineModule },
2764 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2765 (void*)&WB_AddModuleExports },
2766 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2767 (void*)&WB_AddReadsModule },
2768 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2769 (void*)&WB_AddModuleExportsToAllUnnamed },
2770 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2771 (void*)&WB_AddModuleExportsToAll },
2772 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2773 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2774 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2775 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2776 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2777 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2778 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2779 {CC"remapInstructionOperandFromCPCache0",
2780 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2781 {CC"encodeConstantPoolIndyIndex0",
2782 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2783 {CC"getObjectsViaKlassOopMaps0",
2784 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
2785 {CC"getObjectsViaOopIterator0",
2786 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
2787 {CC"getObjectsViaFrameOopIterator",
2788 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
2789 {CC"getMethodBooleanOption",
2790 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2791 (void*)&WB_GetMethodBooleaneOption},
2792 {CC"getMethodIntxOption",
2793 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2794 (void*)&WB_GetMethodIntxOption},
2795 {CC"getMethodUintxOption",
2796 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2797 (void*)&WB_GetMethodUintxOption},
2798 {CC"getMethodDoubleOption",
2799 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2800 (void*)&WB_GetMethodDoubleOption},
2801 {CC"getMethodStringOption",
2802 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2803 (void*)&WB_GetMethodStringOption},
2804 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2805 (void*)&WB_GetDefaultArchivePath},
2806 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2807 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2808 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2809 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2810 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2811 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2812 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2813 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2814 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2815 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2816 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2817 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2818 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2819 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2820 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2821 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2822 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2823
2824 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2825 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2826 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2827 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2828 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2829 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2830 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2831 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2832 (void*)&WB_AddCompilerDirective },
2833 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2834 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2835 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2836 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2837 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2838 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2839 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2840 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2841 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2842 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2843 (void*)&WB_ConcurrentGCRunTo},
2844 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2845 (void*)&WB_CheckLibSpecifiesNoexecstack},
2846 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2847 {CC"validateCgroup",
2848 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2849 (void*)&WB_ValidateCgroup },
2850 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2851 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2852 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2853 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2854 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2855
2856 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2857 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2858 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2859 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2860 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2861 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2862 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2863 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2864 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2865 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2866 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2867
2868 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2869 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2870 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2871
2872 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2873 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2874 };
2875
2876
2877 #undef CC
2878
2879 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2880 {
2881 if (WhiteBoxAPI) {
2882 // Make sure that wbclass is loaded by the null classloader
2883 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2884 Handle loader(THREAD, ik->class_loader());
2885 if (loader.is_null()) {
2886 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2887 WhiteBox::set_used();
2888 }
2889 }
2890 }
2891 JVM_END