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