1 /*
2 * Copyright (c) 2012, 2023, 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/cdsoffsets.hpp"
28 #include "cds/filemap.hpp"
29 #include "cds/heapShared.inline.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/classLoaderDataGraph.hpp"
32 #include "classfile/javaClasses.inline.hpp"
33 #include "classfile/modules.hpp"
34 #include "classfile/protectionDomainCache.hpp"
35 #include "classfile/stringTable.hpp"
36 #include "classfile/symbolTable.hpp"
37 #include "classfile/systemDictionary.hpp"
38 #include "classfile/vmSymbols.hpp"
39 #include "code/codeCache.hpp"
40 #include "compiler/compilationPolicy.hpp"
41 #include "compiler/directivesParser.hpp"
42 #include "compiler/methodMatcher.hpp"
43 #include "gc/shared/concurrentGCBreakpoints.hpp"
44 #include "gc/shared/gcConfig.hpp"
45 #include "gc/shared/gcLocker.inline.hpp"
46 #include "gc/shared/genArguments.hpp"
47 #include "gc/shared/genCollectedHeap.hpp"
48 #include "jvmtifiles/jvmtiEnv.hpp"
49 #include "logging/log.hpp"
50 #include "memory/iterator.hpp"
51 #include "memory/metadataFactory.hpp"
52 #include "memory/metaspace/testHelpers.hpp"
53 #include "memory/metaspaceUtils.hpp"
54 #include "memory/oopFactory.hpp"
55 #include "memory/resourceArea.hpp"
56 #include "memory/universe.hpp"
57 #include "oops/array.hpp"
58 #include "oops/compressedOops.hpp"
59 #include "oops/constantPool.inline.hpp"
60 #include "oops/klass.inline.hpp"
61 #include "oops/method.inline.hpp"
62 #include "oops/objArrayKlass.hpp"
63 #include "oops/objArrayOop.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "oops/typeArrayOop.inline.hpp"
66 #include "prims/resolvedMethodTable.hpp"
67 #include "prims/wbtestmethods/parserTests.hpp"
68 #include "prims/whitebox.inline.hpp"
69 #include "runtime/arguments.hpp"
70 #include "runtime/atomic.hpp"
71 #include "runtime/deoptimization.hpp"
72 #include "runtime/fieldDescriptor.inline.hpp"
73 #include "runtime/flags/jvmFlag.hpp"
74 #include "runtime/flags/jvmFlagAccess.hpp"
75 #include "runtime/frame.inline.hpp"
76 #include "runtime/handles.inline.hpp"
77 #include "runtime/handshake.hpp"
78 #include "runtime/interfaceSupport.inline.hpp"
79 #include "runtime/javaCalls.hpp"
80 #include "runtime/jniHandles.inline.hpp"
81 #include "runtime/lockStack.hpp"
82 #include "runtime/os.hpp"
83 #include "runtime/stackFrameStream.inline.hpp"
84 #include "runtime/sweeper.hpp"
85 #include "runtime/synchronizer.hpp"
86 #include "runtime/thread.hpp"
87 #include "runtime/threadSMR.hpp"
88 #include "runtime/vframe.hpp"
89 #include "runtime/vm_version.hpp"
90 #include "services/memoryService.hpp"
91 #include "utilities/align.hpp"
92 #include "utilities/debug.hpp"
93 #include "utilities/elfFile.hpp"
94 #include "utilities/exceptions.hpp"
95 #include "utilities/macros.hpp"
96 #include "utilities/ostream.hpp"
97 #if INCLUDE_G1GC
98 #include "gc/g1/g1Arguments.hpp"
99 #include "gc/g1/g1CollectedHeap.inline.hpp"
100 #include "gc/g1/g1ConcurrentMark.hpp"
101 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
102 #include "gc/g1/heapRegionManager.hpp"
103 #include "gc/g1/heapRegionRemSet.hpp"
104 #endif // INCLUDE_G1GC
105 #if INCLUDE_PARALLELGC
106 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
107 #endif // INCLUDE_PARALLELGC
108 #if INCLUDE_NMT
109 #include "services/mallocSiteTable.hpp"
110 #include "services/memTracker.hpp"
111 #include "utilities/nativeCallStack.hpp"
112 #endif // INCLUDE_NMT
113 #if INCLUDE_JVMCI
114 #include "jvmci/jvmciEnv.hpp"
115 #include "jvmci/jvmciRuntime.hpp"
116 #endif
117
118 #ifdef LINUX
119 #include "os_linux.hpp"
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 #if INCLUDE_NMT
651 // Alloc memory using the test memory type so that we can use that to see if
652 // NMT picks it up correctly
653 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
654 jlong addr = 0;
655 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
656 return addr;
657 WB_END
658
659 // Alloc memory with pseudo call stack. The test can create psudo malloc
660 // allocation site to stress the malloc tracking.
661 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
662 address pc = (address)(size_t)pseudo_stack;
663 NativeCallStack stack(&pc, 1);
664 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
665 WB_END
666
667 // Alloc memory with pseudo call stack and specific memory type.
668 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
669 address pc = (address)(size_t)pseudo_stack;
670 NativeCallStack stack(&pc, 1);
671 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
672 WB_END
673
674 // Free the memory allocated by NMTAllocTest
675 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
676 os::free((void*)(uintptr_t)mem);
677 WB_END
678
679 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
680 jlong addr = 0;
681
682 addr = (jlong)(uintptr_t)os::reserve_memory(size);
683 MemTracker::record_virtual_memory_type((address)addr, mtTest);
684
685 return addr;
686 WB_END
687
688 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
689 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
690 MemTracker::record_virtual_memory_type((address)addr, mtTest);
691
692 return addr;
693 WB_END
694
695 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
696 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
697 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
698 WB_END
699
700 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
701 os::uncommit_memory((char *)(uintptr_t)addr, size);
702 WB_END
703
704 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
705 os::release_memory((char *)(uintptr_t)addr, size);
706 WB_END
707
708 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
709 int hash_size = MallocSiteTable::hash_buckets();
710 assert(hash_size > 0, "NMT hash_size should be > 0");
711 return (jint)hash_size;
712 WB_END
713
714 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
715 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
716 return (jlong)arena;
717 WB_END
718
719 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
720 Arena* a = (Arena*)arena;
721 delete a;
722 WB_END
723
724 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
725 Arena* a = (Arena*)arena;
726 a->Amalloc(size_t(size));
727 WB_END
728 #endif // INCLUDE_NMT
729
730 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
731 assert(method != NULL, "method should not be null");
732 ThreadToNativeFromVM ttn(thread);
733 return env->FromReflectedMethod(method);
734 }
735
736 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
737 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
738 private:
739 int _result;
740 const bool _make_not_entrant;
741 public:
742 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
743 _result(0), _make_not_entrant(make_not_entrant) { }
744 int result() const { return _result; }
745
746 void doit() {
747 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
748 if (t->has_last_Java_frame()) {
749 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
750 frame* f = fst.current();
751 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
752 Deoptimization::deoptimize(t, *f);
753 if (_make_not_entrant) {
754 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
755 assert(cm != NULL, "sanity check");
756 cm->make_not_entrant();
757 }
758 ++_result;
759 }
760 }
761 }
762 }
763 }
764 };
765
766 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
767 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
768 VMThread::execute(&op);
769 return op.result();
770 WB_END
771
772 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
773 bool result = false;
774 if (thread->has_last_Java_frame()) {
775 RegisterMap reg_map(thread);
776 javaVFrame *jvf = thread->last_java_vframe(®_map);
777 for (jint d = 0; d < depth && jvf != NULL; d++) {
778 jvf = jvf->java_sender();
779 }
780 result = jvf != NULL && jvf->fr().is_deoptimized_frame();
781 }
782 return result;
783 WB_END
784
785 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
786 CodeCache::mark_all_nmethods_for_deoptimization();
787 Deoptimization::deoptimize_all_marked();
788 WB_END
789
790 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
791 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
792 int result = 0;
793 CHECK_JNI_EXCEPTION_(env, result);
794 MutexLocker mu(Compile_lock);
795 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
796 if (is_osr) {
797 result += mh->mark_osr_nmethods();
798 } else if (mh->code() != NULL) {
799 mh->code()->mark_for_deoptimization();
800 ++result;
801 }
802 result += CodeCache::mark_for_deoptimization(mh());
803 if (result > 0) {
804 Deoptimization::deoptimize_all_marked();
805 }
806 return result;
807 WB_END
808
809 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
810 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
811 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
812 MutexLocker mu(Compile_lock);
813 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
814 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
815 if (code == NULL) {
816 return JNI_FALSE;
817 }
818 return (code->is_alive() && !code->is_marked_for_deoptimization());
819 WB_END
820
821 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
822 if (comp == NULL) {
823 return true;
824 }
825 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
826 bool exclude = directive->ExcludeOption;
827 DirectivesStack::release(directive);
828 return exclude;
829 }
830
831 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
832 if (is_osr) {
833 return CompilationPolicy::can_be_osr_compiled(mh, level);
834 } else {
835 return CompilationPolicy::can_be_compiled(mh, level);
836 }
837 }
838
839 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
840 if (method == NULL || comp_level > CompilationPolicy::highest_compile_level()) {
841 return false;
842 }
843 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
844 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
845 MutexLocker mu(Compile_lock);
846 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
847
848 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
849 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
850 // to exclude a compilation of 'method'.
851 if (comp_level == CompLevel_any) {
852 // Both compilers could have ExcludeOption set. Check all combinations.
853 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
854 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
855 if (excluded_c1 && excluded_c2) {
856 // Compilation of 'method' excluded by both compilers.
857 return false;
858 }
859
860 if (excluded_c1) {
861 // C1 only has ExcludeOption set: Check if compilable with C2.
862 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
863 } else if (excluded_c2) {
864 // C2 only has ExcludeOption set: Check if compilable with C1.
865 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
866 }
867 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
868 // Compilation of 'method' excluded by compiler used for 'comp_level'.
869 return false;
870 }
871
872 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
873 WB_END
874
875 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
876 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
877 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
878 MutexLocker mu(Compile_lock);
879 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
880 return mh->queued_for_compilation();
881 WB_END
882
883 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
884 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
885 return false; // Intrinsic is not available on a non-existent compilation level.
886 }
887 jmethodID method_id, compilation_context_id;
888 method_id = reflected_method_to_jmid(thread, env, method);
889 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
890 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
891
892 DirectiveSet* directive;
893 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
894 assert(comp != NULL, "compiler not available");
895 if (compilation_context != NULL) {
896 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
897 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
898 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
899 directive = DirectivesStack::getMatchingDirective(cch, comp);
900 } else {
901 // Calling with NULL matches default directive
902 directive = DirectivesStack::getDefaultDirective(comp);
903 }
904 bool result = comp->is_intrinsic_available(mh, directive);
905 DirectivesStack::release(directive);
906 return result;
907 WB_END
908
909 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
910 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
911 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
912 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
913 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
914 return (code != NULL ? code->comp_level() : CompLevel_none);
915 WB_END
916
917 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
918 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
919 CHECK_JNI_EXCEPTION(env);
920 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
921 if (is_osr) {
922 mh->set_not_osr_compilable("WhiteBox", comp_level);
923 } else {
924 mh->set_not_compilable("WhiteBox", comp_level);
925 }
926 WB_END
927
928 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
929 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
931 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
932 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
933 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
934 WB_END
935
936 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
937 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
938 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
939 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
940 bool result = mh->dont_inline();
941 mh->set_dont_inline(value == JNI_TRUE);
942 return result;
943 WB_END
944
945 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
946 if (comp_level == CompLevel_any) {
947 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
948 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
949 } else {
950 return CompileBroker::queue_size(comp_level);
951 }
952 WB_END
953
954 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
955 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
956 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
957 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
958 bool result = mh->force_inline();
959 mh->set_force_inline(value == JNI_TRUE);
960 return result;
961 WB_END
962
963 #ifdef LINUX
964 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
965 const char* proc_self_cgroup,
966 const char* proc_self_mountinfo,
967 u1* cg_flags) {
968 CgroupInfo cg_infos[CG_INFO_LENGTH];
969 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
970 proc_self_cgroup,
971 proc_self_mountinfo, cg_flags);
972 }
973 #endif
974
975 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
976 // Screen for unavailable/bad comp level or null method
977 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
978 if (method == NULL) {
979 tty->print_cr("WB error: request to compile NULL method");
980 return false;
981 }
982 if (comp_level > CompilationPolicy::highest_compile_level()) {
983 tty->print_cr("WB error: invalid compilation level %d", comp_level);
984 return false;
985 }
986 if (comp == NULL) {
987 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
988 return false;
989 }
990
991 // Check if compilation is blocking
992 methodHandle mh(THREAD, method);
993 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
994 bool is_blocking = !directive->BackgroundCompilationOption;
995 DirectivesStack::release(directive);
996
997 // Compile method and check result
998 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
999 MutexLocker mu(THREAD, Compile_lock);
1000 bool is_queued = mh->queued_for_compilation();
1001 if ((!is_blocking && is_queued) || nm != NULL) {
1002 return true;
1003 }
1004 // Check code again because compilation may be finished before Compile_lock is acquired.
1005 if (bci == InvocationEntryBci) {
1006 CompiledMethod* code = mh->code();
1007 if (code != NULL && code->as_nmethod_or_null() != NULL) {
1008 return true;
1009 }
1010 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != NULL) {
1011 return true;
1012 }
1013 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1014 mh->print_short_name(tty);
1015 tty->cr();
1016 if (is_blocking && is_queued) {
1017 tty->print_cr("WB error: blocking compilation is still in queue!");
1018 }
1019 return false;
1020 }
1021
1022 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1023 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1024 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1025 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1026 WB_END
1027
1028 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1029 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1030 Method* clinit = ik->class_initializer();
1031 if (clinit == NULL || clinit->method_holder()->is_not_initialized()) {
1032 return false;
1033 }
1034 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1035 WB_END
1036
1037 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1038 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1039 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1040
1041 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1042 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1043 bool result = directive->PrintAssemblyOption;
1044 DirectivesStack::release(directive);
1045
1046 return result;
1047 WB_END
1048
1049 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1050 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1051 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1052
1053 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1054
1055 ResourceMark rm(THREAD);
1056 const char* error_msg = NULL;
1057 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1058 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1059
1060 if (m == NULL) {
1061 assert(error_msg != NULL, "Always have an error message");
1062 tty->print_cr("Got error: %s", error_msg);
1063 return -1; // Pattern failed
1064 }
1065
1066 // Pattern works - now check if it matches
1067 int result;
1068 if (m->match(mh, InlineMatcher::force_inline)) {
1069 result = 2; // Force inline match
1070 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1071 result = 1; // Dont inline match
1072 } else {
1073 result = 0; // No match
1074 }
1075 delete m;
1076 return result;
1077 WB_END
1078
1079 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1080 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1081 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1082
1083 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1084
1085 ResourceMark rm;
1086 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1087
1088 const char* error_msg = NULL;
1089
1090 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1091 if (m == NULL) {
1092 assert(error_msg != NULL, "Must have error_msg");
1093 tty->print_cr("Got error: %s", error_msg);
1094 return -1;
1095 }
1096
1097 // Pattern works - now check if it matches
1098 int result = m->matches(mh);
1099 delete m;
1100 assert(result == 0 || result == 1, "Result out of range");
1101 return result;
1102 WB_END
1103
1104 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1105 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1106 CHECK_JNI_EXCEPTION(env);
1107 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1108
1109 MethodData* mdo = mh->method_data();
1110 if (mdo == NULL) {
1111 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1112 mdo = mh->method_data();
1113 }
1114 mdo->init();
1115 InvocationCounter* icnt = mdo->invocation_counter();
1116 InvocationCounter* bcnt = mdo->backedge_counter();
1117 // set i-counter according to CompilationPolicy::is_method_profiled
1118 icnt->set(Tier4MinInvocationThreshold);
1119 bcnt->set(Tier4CompileThreshold);
1120 WB_END
1121
1122 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1123 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1124 CHECK_JNI_EXCEPTION(env);
1125 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1126 MutexLocker mu(THREAD, Compile_lock);
1127 MethodData* mdo = mh->method_data();
1128 MethodCounters* mcs = mh->method_counters();
1129
1130 if (mdo != NULL) {
1131 mdo->init();
1132 ResourceMark rm(THREAD);
1133 int arg_count = mdo->method()->size_of_parameters();
1134 for (int i = 0; i < arg_count; i++) {
1135 mdo->set_arg_modified(i, 0);
1136 }
1137 MutexLocker mu(THREAD, mdo->extra_data_lock());
1138 mdo->clean_method_data(/*always_clean*/true);
1139 }
1140
1141 mh->clear_not_c1_compilable();
1142 mh->clear_not_c2_compilable();
1143 mh->clear_not_c2_osr_compilable();
1144 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1145 if (mcs != NULL) {
1146 mcs->clear_counters();
1147 }
1148 WB_END
1149
1150 template <typename T, int type_enum>
1151 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1152 if (name == NULL) {
1153 return false;
1154 }
1155 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1156 const char* flag_name = env->GetStringUTFChars(name, NULL);
1157 CHECK_JNI_EXCEPTION_(env, false);
1158 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1159 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1160 env->ReleaseStringUTFChars(name, flag_name);
1161 return (result == JVMFlag::SUCCESS);
1162 }
1163
1164 template <typename T, int type_enum>
1165 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1166 if (name == NULL) {
1167 return false;
1168 }
1169 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1170 const char* flag_name = env->GetStringUTFChars(name, NULL);
1171 CHECK_JNI_EXCEPTION_(env, false);
1172 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1173 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1174 env->ReleaseStringUTFChars(name, flag_name);
1175 return (result == JVMFlag::SUCCESS);
1176 }
1177
1178 template <typename T>
1179 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1180 ResourceMark rm(thread);
1181 jclass clazz = env->FindClass(name->as_C_string());
1182 CHECK_JNI_EXCEPTION_(env, NULL);
1183 jmethodID methodID = env->GetStaticMethodID(clazz,
1184 vmSymbols::valueOf_name()->as_C_string(),
1185 sig->as_C_string());
1186 CHECK_JNI_EXCEPTION_(env, NULL);
1187 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1188 CHECK_JNI_EXCEPTION_(env, NULL);
1189 return result;
1190 }
1191
1192 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1193 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1194 }
1195 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1196 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1197 }
1198 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1199 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1200 }
1201 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1202 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1203 }*/
1204 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1205 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1206 }
1207
1208 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1209 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1210 const char* flag_name = env->GetStringUTFChars(name, NULL);
1211 CHECK_JNI_EXCEPTION_(env, NULL);
1212 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1213 env->ReleaseStringUTFChars(name, flag_name);
1214 return result;
1215 }
1216
1217 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1218 const JVMFlag* flag = getVMFlag(thread, env, name);
1219 return (flag != NULL) && flag->is_constant_in_binary();
1220 WB_END
1221
1222 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1223 const JVMFlag* flag = getVMFlag(thread, env, name);
1224 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1225 WB_END
1226
1227 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1228 bool result;
1229 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1230 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1231 return booleanBox(thread, env, result);
1232 }
1233 return NULL;
1234 WB_END
1235
1236 template <typename T, int type_enum>
1237 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1238 T result;
1239 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1240 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1241 return longBox(thread, env, result);
1242 }
1243 return NULL;
1244 }
1245
1246 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1247 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1248 WB_END
1249
1250 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1251 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1252 WB_END
1253
1254 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1255 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1256 WB_END
1257
1258 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1259 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1260 WB_END
1261
1262 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1263 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1264 WB_END
1265
1266 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1267 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1268 WB_END
1269
1270 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1271 double result;
1272 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1273 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1274 return doubleBox(thread, env, result);
1275 }
1276 return NULL;
1277 WB_END
1278
1279 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1280 ccstr ccstrResult;
1281 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1282 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1283 jstring result = env->NewStringUTF(ccstrResult);
1284 CHECK_JNI_EXCEPTION_(env, NULL);
1285 return result;
1286 }
1287 return NULL;
1288 WB_END
1289
1290 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1291 bool result = value == JNI_TRUE ? true : false;
1292 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1293 WB_END
1294
1295 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1296 int result = value;
1297 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1298 WB_END
1299
1300 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1301 uint result = value;
1302 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1303 WB_END
1304
1305 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1306 intx result = value;
1307 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1308 WB_END
1309
1310 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1311 uintx result = value;
1312 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1313 WB_END
1314
1315 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1316 uint64_t result = value;
1317 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1318 WB_END
1319
1320 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1321 size_t result = value;
1322 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1323 WB_END
1324
1325 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1326 double result = value;
1327 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1328 WB_END
1329
1330 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1331 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1332 const char* ccstrValue;
1333 if (value == NULL) {
1334 ccstrValue = NULL;
1335 }
1336 else {
1337 ccstrValue = env->GetStringUTFChars(value, NULL);
1338 CHECK_JNI_EXCEPTION(env);
1339 }
1340 {
1341 ccstr param = ccstrValue;
1342 ThreadInVMfromNative ttvfn(thread); // back to VM
1343 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1344 assert(param == NULL, "old value is freed automatically and not returned");
1345 }
1346 }
1347 if (value != NULL) {
1348 env->ReleaseStringUTFChars(value, ccstrValue);
1349 }
1350 WB_END
1351
1352 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1353 WhiteBox::compilation_locked = true;
1354 WB_END
1355
1356 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1357 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1358 WhiteBox::compilation_locked = false;
1359 mo.notify_all();
1360 WB_END
1361
1362 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1363 // Force a code cache sweep and block until it finished
1364 NMethodSweeper::force_sweep();
1365 WB_END
1366
1367 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1368 ResourceMark rm(THREAD);
1369 int len;
1370 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1371 return (StringTable::lookup(name, len) != NULL);
1372 WB_END
1373
1374 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1375 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1376 Universe::heap()->collect(GCCause::_wb_full_gc);
1377 #if INCLUDE_G1GC
1378 if (UseG1GC) {
1379 // Needs to be cleared explicitly for G1
1380 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1381 }
1382 #endif // INCLUDE_G1GC
1383 WB_END
1384
1385 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1386 Universe::heap()->collect(GCCause::_wb_young_gc);
1387 WB_END
1388
1389 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1390 // static+volatile in order to force the read to happen
1391 // (not be eliminated by the compiler)
1392 static char c;
1393 static volatile char* p;
1394
1395 p = os::reserve_memory(os::vm_allocation_granularity());
1396 if (p == NULL) {
1397 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1398 }
1399
1400 c = *p;
1401 WB_END
1402
1403 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1404 const char* features = VM_Version::features_string();
1405 ThreadToNativeFromVM ttn(thread);
1406 jstring features_string = env->NewStringUTF(features);
1407
1408 CHECK_JNI_EXCEPTION_(env, NULL);
1409
1410 return features_string;
1411 WB_END
1412
1413 int WhiteBox::get_blob_type(const CodeBlob* code) {
1414 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1415 return CodeCache::get_code_heap(code)->code_blob_type();
1416 }
1417
1418 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1419 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1420 return CodeCache::get_code_heap(blob_type);
1421 }
1422
1423 struct CodeBlobStub {
1424 CodeBlobStub(const CodeBlob* blob) :
1425 name(os::strdup(blob->name())),
1426 size(blob->size()),
1427 blob_type(WhiteBox::get_blob_type(blob)),
1428 address((jlong) blob) { }
1429 ~CodeBlobStub() { os::free((void*) name); }
1430 const char* const name;
1431 const jint size;
1432 const jint blob_type;
1433 const jlong address;
1434 };
1435
1436 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1437 ResourceMark rm;
1438 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1439 CHECK_JNI_EXCEPTION_(env, NULL);
1440 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1441
1442 jstring name = env->NewStringUTF(cb->name);
1443 CHECK_JNI_EXCEPTION_(env, NULL);
1444 env->SetObjectArrayElement(result, 0, name);
1445
1446 jobject obj = integerBox(thread, env, cb->size);
1447 CHECK_JNI_EXCEPTION_(env, NULL);
1448 env->SetObjectArrayElement(result, 1, obj);
1449
1450 obj = integerBox(thread, env, cb->blob_type);
1451 CHECK_JNI_EXCEPTION_(env, NULL);
1452 env->SetObjectArrayElement(result, 2, obj);
1453
1454 obj = longBox(thread, env, cb->address);
1455 CHECK_JNI_EXCEPTION_(env, NULL);
1456 env->SetObjectArrayElement(result, 3, obj);
1457
1458 return result;
1459 }
1460
1461 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1462 ResourceMark rm(THREAD);
1463 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1464 CHECK_JNI_EXCEPTION_(env, NULL);
1465 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1466 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1467 jobjectArray result = NULL;
1468 if (code == NULL) {
1469 return result;
1470 }
1471 int comp_level = code->comp_level();
1472 int insts_size = code->insts_size();
1473
1474 ThreadToNativeFromVM ttn(thread);
1475 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1476 CHECK_JNI_EXCEPTION_(env, NULL);
1477 result = env->NewObjectArray(5, clazz, NULL);
1478 if (result == NULL) {
1479 return result;
1480 }
1481
1482 CodeBlobStub stub(code);
1483 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1484 CHECK_JNI_EXCEPTION_(env, NULL);
1485 env->SetObjectArrayElement(result, 0, codeBlob);
1486
1487 jobject level = integerBox(thread, env, comp_level);
1488 CHECK_JNI_EXCEPTION_(env, NULL);
1489 env->SetObjectArrayElement(result, 1, level);
1490
1491 jbyteArray insts = env->NewByteArray(insts_size);
1492 CHECK_JNI_EXCEPTION_(env, NULL);
1493 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1494 env->SetObjectArrayElement(result, 2, insts);
1495
1496 jobject id = integerBox(thread, env, code->compile_id());
1497 CHECK_JNI_EXCEPTION_(env, NULL);
1498 env->SetObjectArrayElement(result, 3, id);
1499
1500 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1501 CHECK_JNI_EXCEPTION_(env, NULL);
1502 env->SetObjectArrayElement(result, 4, entry_point);
1503
1504 return result;
1505 WB_END
1506
1507 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1508 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1509 BufferBlob* blob;
1510 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1511 if (full_size < size) {
1512 full_size += align_up(size - full_size, oopSize);
1513 }
1514 {
1515 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1516 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1517 if (blob != NULL) {
1518 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1519 }
1520 }
1521 // Track memory usage statistic after releasing CodeCache_lock
1522 MemoryService::track_code_cache_memory_usage();
1523 return blob;
1524 }
1525
1526 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1527 if (size < 0) {
1528 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1529 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1530 }
1531 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1532 WB_END
1533
1534 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1535 if (addr == 0) {
1536 return;
1537 }
1538 BufferBlob::free((BufferBlob*) addr);
1539 WB_END
1540
1541 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1542 ResourceMark rm;
1543 GrowableArray<CodeBlobStub*> blobs;
1544 {
1545 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1546 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1547 if (heap == NULL) {
1548 return NULL;
1549 }
1550 for (CodeBlob* cb = (CodeBlob*) heap->first();
1551 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1552 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1553 new (stub) CodeBlobStub(cb);
1554 blobs.append(stub);
1555 }
1556 }
1557 ThreadToNativeFromVM ttn(thread);
1558 jobjectArray result = NULL;
1559 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1560 CHECK_JNI_EXCEPTION_(env, NULL);
1561 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1562 CHECK_JNI_EXCEPTION_(env, NULL);
1563 if (result == NULL) {
1564 return result;
1565 }
1566 int i = 0;
1567 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1568 it != blobs.end(); ++it) {
1569 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1570 CHECK_JNI_EXCEPTION_(env, NULL);
1571 env->SetObjectArrayElement(result, i, obj);
1572 CHECK_JNI_EXCEPTION_(env, NULL);
1573 ++i;
1574 }
1575 return result;
1576 WB_END
1577
1578 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1579 return CompileBroker::get_compilation_activity_mode();
1580 WB_END
1581
1582 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1583 if (addr == 0) {
1584 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1585 "WB_GetCodeBlob: addr is null");
1586 }
1587 ThreadToNativeFromVM ttn(thread);
1588 CodeBlobStub stub((CodeBlob*) addr);
1589 return codeBlob2objectArray(thread, env, &stub);
1590 WB_END
1591
1592 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1593 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1594 CHECK_JNI_EXCEPTION_(env, 0);
1595 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1596 return (jlong) mh->method_data();
1597 WB_END
1598
1599 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1600 return (jlong) thread->stack_size();
1601 WB_END
1602
1603 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1604 return (jlong) thread->stack_overflow_state()->stack_available(
1605 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1606 WB_END
1607
1608
1609 int WhiteBox::array_bytes_to_length(size_t bytes) {
1610 return Array<u1>::bytes_to_length(bytes);
1611 }
1612
1613 ///////////////
1614 // MetaspaceTestContext and MetaspaceTestArena
1615 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1616 metaspace::MetaspaceTestContext* context =
1617 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1618 return (jlong)p2i(context);
1619 WB_END
1620
1621 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1622 delete (metaspace::MetaspaceTestContext*) context;
1623 WB_END
1624
1625 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1626 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1627 context0->purge_area();
1628 WB_END
1629
1630 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1631 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1632 context0->print_on(tty);
1633 WB_END
1634
1635 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1636 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1637 return context0->committed_words();
1638 WB_END
1639
1640 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1641 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1642 return context0->used_words();
1643 WB_END
1644
1645 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1646 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1647 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1648 return (jlong)p2i(context0->create_arena(type));
1649 WB_END
1650
1651 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1652 delete (metaspace::MetaspaceTestArena*) arena;
1653 WB_END
1654
1655 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1656 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1657 MetaWord* p = arena0->allocate((size_t) word_size);
1658 return (jlong)p2i(p);
1659 WB_END
1660
1661 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1662 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1663 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1664 WB_END
1665
1666 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1667 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1668 WB_END
1669
1670 //////////////
1671
1672 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1673 if (size < 0) {
1674 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1675 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1676 }
1677
1678 oop class_loader_oop = JNIHandles::resolve(class_loader);
1679 ClassLoaderData* cld = class_loader_oop != NULL
1680 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1681 : ClassLoaderData::the_null_class_loader_data();
1682
1683 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1684
1685 return (jlong)(uintptr_t)metadata;
1686 WB_END
1687
1688 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1689 jstring version, jstring location, jobjectArray packages))
1690 Handle h_module (THREAD, JNIHandles::resolve(module));
1691 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1692 WB_END
1693
1694 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1695 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1696 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1697 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1698 WB_END
1699
1700 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1701 Handle h_module (THREAD, JNIHandles::resolve(module));
1702 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1703 WB_END
1704
1705 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1706 Handle h_module (THREAD, JNIHandles::resolve(module));
1707 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1708 WB_END
1709
1710 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1711 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1712 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1713 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1714 WB_END
1715
1716 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1717 if (inc < 0) {
1718 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1719 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1720 }
1721
1722 jlong max_size_t = (jlong) ((size_t) -1);
1723 if (inc > max_size_t) {
1724 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1725 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1726 }
1727
1728 size_t new_cap_until_GC = 0;
1729 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1730 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1731 if (!success) {
1732 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1733 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1734 "due to contention with another thread");
1735 }
1736 return (jlong) new_cap_until_GC;
1737 WB_END
1738
1739 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1740 return (jlong) MetaspaceGC::capacity_until_GC();
1741 WB_END
1742
1743 // The function is only valid when CDS is available.
1744 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1745 #if INCLUDE_CDS
1746 return (jlong)MetaspaceShared::core_region_alignment();
1747 #else
1748 ShouldNotReachHere();
1749 return 0L;
1750 #endif
1751 WB_END
1752
1753 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1754 oop obj_oop = JNIHandles::resolve(obj);
1755 return (jboolean) obj_oop->mark().has_monitor();
1756 WB_END
1757
1758 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1759 return (jint) LockStack::CAPACITY;
1760 WB_END
1761
1762 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1763 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1764 WB_END
1765
1766 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1767 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1768 return ObjectSynchronizer::request_deflate_idle_monitors();
1769 WB_END
1770
1771 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1772 VM_ForceSafepoint force_safepoint_op;
1773 VMThread::execute(&force_safepoint_op);
1774 WB_END
1775
1776 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1777 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1778 return (jlong) ik->constants();
1779 WB_END
1780
1781 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1782 return ConstantPool::CPCACHE_INDEX_TAG;
1783 WB_END
1784
1785 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1786 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1787 ConstantPool* cp = ik->constants();
1788 if (cp->cache() == NULL) {
1789 return -1;
1790 }
1791 return cp->cache()->length();
1792 WB_END
1793
1794 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1795 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1796 ConstantPool* cp = ik->constants();
1797 if (cp->cache() == NULL) {
1798 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1799 }
1800 jint cpci = index;
1801 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1802 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1803 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1804 }
1805 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1806 return cpi;
1807 WB_END
1808
1809 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1810 return ConstantPool::encode_invokedynamic_index(index);
1811 WB_END
1812
1813 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1814 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1815 VMThread::execute(&clear_ics);
1816 WB_END
1817
1818 template <typename T>
1819 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1820 assert(value != NULL, "sanity");
1821 if (method == NULL || name == NULL) {
1822 return false;
1823 }
1824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1825 CHECK_JNI_EXCEPTION_(env, false);
1826 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1827 // can't be in VM when we call JNI
1828 ThreadToNativeFromVM ttnfv(thread);
1829 const char* flag_name = env->GetStringUTFChars(name, NULL);
1830 CHECK_JNI_EXCEPTION_(env, false);
1831 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1832 env->ReleaseStringUTFChars(name, flag_name);
1833 if (option == CompileCommand::Unknown) {
1834 return false;
1835 }
1836 if (!CompilerOracle::option_matches_type(option, *value)) {
1837 return false;
1838 }
1839 return CompilerOracle::has_option_value(mh, option, *value);
1840 }
1841
1842 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1843 bool result;
1844 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1845 // can't be in VM when we call JNI
1846 ThreadToNativeFromVM ttnfv(thread);
1847 return booleanBox(thread, env, result);
1848 }
1849 return NULL;
1850 WB_END
1851
1852 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1853 intx result;
1854 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1855 // can't be in VM when we call JNI
1856 ThreadToNativeFromVM ttnfv(thread);
1857 return longBox(thread, env, result);
1858 }
1859 return NULL;
1860 WB_END
1861
1862 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1863 uintx result;
1864 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1865 // can't be in VM when we call JNI
1866 ThreadToNativeFromVM ttnfv(thread);
1867 return longBox(thread, env, result);
1868 }
1869 return NULL;
1870 WB_END
1871
1872 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1873 double result;
1874 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1875 // can't be in VM when we call JNI
1876 ThreadToNativeFromVM ttnfv(thread);
1877 return doubleBox(thread, env, result);
1878 }
1879 return NULL;
1880 WB_END
1881
1882 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1883 ccstr ccstrResult;
1884 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1885 // can't be in VM when we call JNI
1886 ThreadToNativeFromVM ttnfv(thread);
1887 jstring result = env->NewStringUTF(ccstrResult);
1888 CHECK_JNI_EXCEPTION_(env, NULL);
1889 return result;
1890 }
1891 return NULL;
1892 WB_END
1893
1894 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1895 const char* p = Arguments::get_default_shared_archive_path();
1896 ThreadToNativeFromVM ttn(thread);
1897 jstring path_string = env->NewStringUTF(p);
1898
1899 CHECK_JNI_EXCEPTION_(env, NULL);
1900
1901 return path_string;
1902 WB_END
1903
1904 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1905 return UseSharedSpaces;
1906 WB_END
1907
1908 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
1909 return FileMapInfo::memory_mapping_failed();
1910 WB_END
1911
1912 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1913 oop obj_oop = JNIHandles::resolve(obj);
1914 return HeapShared::is_archived_object(obj_oop);
1915 WB_END
1916
1917 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1918 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1919 WB_END
1920
1921 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1922 return !HeapShared::closed_archive_heap_region_mapped();
1923 WB_END
1924
1925 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1926 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1927 if (k->is_instance_klass()) {
1928 InstanceKlass *ik = InstanceKlass::cast(k);
1929 ConstantPool *cp = ik->constants();
1930 objArrayOop refs = cp->resolved_references();
1931 return (jobject)JNIHandles::make_local(THREAD, refs);
1932 } else {
1933 return NULL;
1934 }
1935 WB_END
1936
1937 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
1938 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1939 if (!k->is_instance_klass()) {
1940 return;
1941 }
1942 InstanceKlass *ik = InstanceKlass::cast(k);
1943 ik->link_class(THREAD); // may throw verification error
1944 WB_END
1945
1946 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1947 return HeapShared::open_archive_heap_region_mapped();
1948 WB_END
1949
1950 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
1951 #if INCLUDE_CDS
1952 return true;
1953 #else
1954 return false;
1955 #endif // INCLUDE_CDS
1956 WB_END
1957
1958 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
1959 #if COMPILER2_OR_JVMCI
1960 return true;
1961 #else
1962 return false;
1963 #endif
1964 WB_END
1965
1966 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
1967 #if INCLUDE_JVMCI
1968 return JVMCIGlobals::gc_supports_jvmci();
1969 #else
1970 return false;
1971 #endif
1972 WB_END
1973
1974 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
1975 return HeapShared::is_heap_object_archiving_allowed();
1976 WB_END
1977
1978
1979 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
1980 #if INCLUDE_JFR
1981 return true;
1982 #else
1983 return false;
1984 #endif // INCLUDE_JFR
1985 WB_END
1986
1987 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
1988 #if defined(DTRACE_ENABLED)
1989 return true;
1990 #else
1991 return false;
1992 #endif // DTRACE_ENABLED
1993 WB_END
1994
1995 #if INCLUDE_CDS
1996
1997 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1998 ResourceMark rm;
1999 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2000 int result = CDSOffsets::find_offset(c_name);
2001 return (jint)result;
2002 WB_END
2003
2004 #endif // INCLUDE_CDS
2005
2006 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2007 class TraceSelfClosure : public HandshakeClosure {
2008 jint _num_threads_completed;
2009
2010 void do_thread(Thread* th) {
2011 JavaThread* jt = th->as_Java_thread();
2012 ResourceMark rm;
2013
2014 jt->print_on(tty);
2015 jt->print_stack_on(tty);
2016 tty->cr();
2017 Atomic::inc(&_num_threads_completed);
2018 }
2019
2020 public:
2021 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2022
2023 jint num_threads_completed() const { return _num_threads_completed; }
2024 };
2025 TraceSelfClosure tsc(Thread::current());
2026
2027 if (all_threads) {
2028 Handshake::execute(&tsc);
2029 } else {
2030 oop thread_oop = JNIHandles::resolve(thread_handle);
2031 if (thread_oop != NULL) {
2032 JavaThread* target = java_lang_Thread::thread(thread_oop);
2033 Handshake::execute(&tsc, target);
2034 }
2035 }
2036 return tsc.num_threads_completed();
2037 WB_END
2038
2039 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2040 class TraceSelfClosure : public AsyncHandshakeClosure {
2041 JavaThread* _self;
2042 void do_thread(Thread* th) {
2043 assert(th->is_Java_thread(), "sanity");
2044 // AsynchHandshake handshakes are only executed by target.
2045 assert(_self == th, "Must be");
2046 assert(Thread::current() == th, "Must be");
2047 JavaThread* jt = th->as_Java_thread();
2048 ResourceMark rm;
2049 jt->print_on(tty);
2050 jt->print_stack_on(tty);
2051 tty->cr();
2052 }
2053
2054 public:
2055 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2056 };
2057 oop thread_oop = JNIHandles::resolve(thread_handle);
2058 if (thread_oop != NULL) {
2059 JavaThread* target = java_lang_Thread::thread(thread_oop);
2060 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2061 Handshake::execute(tsc, target);
2062 }
2063 WB_END
2064
2065 static volatile int _emulated_lock = 0;
2066
2067 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2068 JavaThread* self = JavaThread::current();
2069
2070 {
2071 // Before trying to acquire the lock transition into a safepoint safe state.
2072 // Otherwise if either suspender or suspendee blocks for a safepoint
2073 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2074 // the lock without allowing the safepoint to progress.
2075 ThreadBlockInVM tbivm(self);
2076
2077 // We will deadlock here if we are 'suspender' and 'suspendee'
2078 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2079 // at the right place.
2080 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2081 assert(_emulated_lock == 1, "Must be locked");
2082
2083 // Sleep much longer in suspendee to force situation where
2084 // 'suspender' is waiting above to acquire lock.
2085 os::naked_short_sleep(suspender ? 1 : 10);
2086 }
2087 Atomic::store(&_emulated_lock, 0);
2088 WB_END
2089
2090 // Some convenience methods to deal with objects from java
2091 int WhiteBox::offset_for_field(const char* field_name, oop object,
2092 Symbol* signature_symbol) {
2093 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2094
2095 //Get the class of our object
2096 Klass* arg_klass = object->klass();
2097 //Turn it into an instance-klass
2098 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2099
2100 //Create symbols to look for in the class
2101 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2102
2103 //To be filled in with an offset of the field we're looking for
2104 fieldDescriptor fd;
2105
2106 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2107 if (res == NULL) {
2108 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2109 name_symbol->as_C_string());
2110 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2111 }
2112
2113 //fetch the field at the offset we've found
2114 int dest_offset = fd.offset();
2115
2116 return dest_offset;
2117 }
2118
2119
2120 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2121 int offset = offset_for_field(field_name, object,
2122 vmSymbols::string_signature());
2123 oop string = object->obj_field(offset);
2124 if (string == NULL) {
2125 return NULL;
2126 }
2127 const char* ret = java_lang_String::as_utf8_string(string);
2128 return ret;
2129 }
2130
2131 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2132 int offset =
2133 offset_for_field(field_name, object, vmSymbols::bool_signature());
2134 bool ret = (object->bool_field(offset) == JNI_TRUE);
2135 return ret;
2136 }
2137
2138 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2139 ResourceMark rm;
2140 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2141 const char* klass_name = klass->external_name();
2142
2143 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2144
2145 // one by one registration natives for exception catching
2146 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2147 CHECK_JNI_EXCEPTION(env);
2148 for (int i = 0, n = method_count; i < n; ++i) {
2149 // Skip dummy entries
2150 if (method_array[i].fnPtr == NULL) continue;
2151 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2152 jthrowable throwable_obj = env->ExceptionOccurred();
2153 if (throwable_obj != NULL) {
2154 env->ExceptionClear();
2155 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2156 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2157 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2158 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2159 klass_name, method_array[i].name, method_array[i].signature);
2160 }
2161 } else {
2162 // Registration failed unexpectedly.
2163 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2164 klass_name, method_array[i].name, method_array[i].signature);
2165 env->UnregisterNatives(wbclass);
2166 break;
2167 }
2168 }
2169 }
2170 }
2171
2172 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2173 // can't be in VM when we call JNI
2174 ThreadToNativeFromVM ttnfv(thread);
2175 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2176 CHECK_JNI_EXCEPTION_(env, 0);
2177 int ret;
2178 {
2179 ThreadInVMfromNative ttvfn(thread); // back to VM
2180 ret = DirectivesParser::parse_string(dir, tty);
2181 }
2182 env->ReleaseStringUTFChars(compDirect, dir);
2183 // -1 for error parsing directive. Return 0 as number of directives added.
2184 if (ret == -1) {
2185 ret = 0;
2186 }
2187 return (jint) ret;
2188 WB_END
2189
2190 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2191 DirectivesStack::pop(count);
2192 WB_END
2193
2194 // Checks that the library libfile has the noexecstack bit set.
2195 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2196 jboolean ret = false;
2197 #ifdef LINUX
2198 // Can't be in VM when we call JNI.
2199 ThreadToNativeFromVM ttnfv(thread);
2200 const char* lf = env->GetStringUTFChars(libfile, NULL);
2201 CHECK_JNI_EXCEPTION_(env, 0);
2202 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2203 env->ReleaseStringUTFChars(libfile, lf);
2204 #endif
2205 return ret;
2206 WB_END
2207
2208 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2209 LINUX_ONLY(return OSContainer::is_containerized();)
2210 return false;
2211 WB_END
2212
2213 // Physical memory of the host machine (including containers)
2214 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2215 LINUX_ONLY(return os::Linux::physical_memory();)
2216 return os::physical_memory();
2217 WB_END
2218
2219 // Physical swap of the host machine (including containers), Linux only.
2220 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2221 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2222 return -1; // Not used/implemented on other platforms
2223 WB_END
2224
2225 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2226 jobject o,
2227 jstring proc_cgroups,
2228 jstring proc_self_cgroup,
2229 jstring proc_self_mountinfo))
2230 jint ret = 0;
2231 #ifdef LINUX
2232 ThreadToNativeFromVM ttnfv(thread);
2233 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL);
2234 CHECK_JNI_EXCEPTION_(env, 0);
2235 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL);
2236 CHECK_JNI_EXCEPTION_(env, 0);
2237 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL);
2238 CHECK_JNI_EXCEPTION_(env, 0);
2239 u1 cg_type_flags = 0;
2240 // This sets cg_type_flags
2241 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2242 ret = (jint)cg_type_flags;
2243 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2244 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2245 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2246 #endif
2247 return ret;
2248 WB_END
2249
2250 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2251 os::print_os_info(tty);
2252 WB_END
2253
2254 // Elf decoder
2255 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2256 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2257 ElfFile::_do_not_cache_elf_section = true;
2258 #endif
2259 WB_END
2260
2261 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2262 return (jlong) ResolvedMethodTable::items_count();
2263 WB_END
2264
2265 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2266 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2267 WB_END
2268
2269 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2270 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2271 // Return size in bytes.
2272 return k->size() * wordSize;
2273 WB_END
2274
2275 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2276 // It explains how the thread's priority field is used for test state coordination.
2277 //
2278 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2279 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2280 jlong tid = java_lang_Thread::thread_id(target_oop);
2281 JavaThread* target = java_lang_Thread::thread(target_oop);
2282
2283 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2284 ThreadsListHandle tlh;
2285
2286 // Look up the target thread by tid to ensure it is present
2287 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2288 if (t == NULL) {
2289 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2290 }
2291
2292 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2293 // Allow target to terminate by boosting priority
2294 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2295
2296 // Now wait for the target to terminate
2297 while (!target->is_terminated()) {
2298 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2299 os::naked_short_sleep(0);
2300 }
2301
2302 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2303
2304 // Now release the GC inducing thread - we have to re-resolve the external oop that
2305 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2306 oop original = JNIHandles::resolve_non_null(target_handle);
2307 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2308
2309 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2310
2311 // The Java code should be creating garbage and triggering GC, which would potentially move
2312 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2313 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2314 // kick in.
2315 for (int i = 0; i < 5; i++) {
2316 oop original = JNIHandles::resolve_non_null(target_handle);
2317 oop current = t->threadObj();
2318 if (original != current) {
2319 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2320 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2321 } else {
2322 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2323 ThreadBlockInVM tbivm(thread);
2324 os::naked_short_sleep(50);
2325 }
2326 }
2327 WB_END
2328
2329 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2330 ResourceMark rm; // for verify
2331 stringStream st;
2332 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2333 frame* current_frame = fst.current();
2334 if (log) {
2335 current_frame->print_value_on(&st, NULL);
2336 }
2337 current_frame->verify(fst.register_map());
2338 }
2339 if (log) {
2340 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2341 tty->print_raw(st.as_string());
2342 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2343 }
2344 WB_END
2345
2346 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2347 #if INCLUDE_JVMTI
2348 return JNI_TRUE;
2349 #else
2350 return JNI_FALSE;
2351 #endif
2352 WB_END
2353
2354 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2355 os::naked_short_sleep(time);
2356 WB_END
2357
2358 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2359 ThreadToNativeFromVM ttn(thread);
2360 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2361 CHECK_JNI_EXCEPTION_(env, NULL);
2362 return info_string;
2363 WB_END
2364
2365 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2366 GCLocker::lock_critical(thread);
2367 WB_END
2368
2369 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2370 GCLocker::unlock_critical(thread);
2371 WB_END
2372
2373 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2374 void* const from = (void*)addr;
2375 void* const to = (void*)(addr + size);
2376 if (from > to) {
2377 os::pretouch_memory(from, to, os::vm_page_size());
2378 }
2379 WB_END
2380
2381 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2382 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2383 WB_END
2384
2385 #define CC (char*)
2386
2387 static JNINativeMethod methods[] = {
2388 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2389 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2390 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2391 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2392 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2393 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2394 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2395 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2396 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2397 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2398 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2399 {CC"parseCommandLine0",
2400 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2401 (void*) &WB_ParseCommandLine
2402 },
2403 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2404 (void*)&WB_AddToBootstrapClassLoaderSearch},
2405 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2406 (void*)&WB_AddToSystemClassLoaderSearch},
2407 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2408 (void*)&WB_GetCompressedOopsMaxHeapSize},
2409 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2410 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2411 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2412 #if INCLUDE_CDS
2413 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2414 #endif
2415 #if INCLUDE_G1GC
2416 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2417 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2418 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2419 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2420 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2421 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2422 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2423 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2424 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2425 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2426 (void*)&WB_G1AuxiliaryMemoryUsage },
2427 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2428 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2429 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2430 #endif // INCLUDE_G1GC
2431 #if INCLUDE_PARALLELGC
2432 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2433 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2434 #endif
2435 #if INCLUDE_NMT
2436 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2437 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2438 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2439 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2440 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2441 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2442 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2443 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2444 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2445 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2446 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2447 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2448 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2449 #endif // INCLUDE_NMT
2450 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2451 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2452 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2453 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2454 (void*)&WB_DeoptimizeMethod },
2455 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2456 (void*)&WB_IsMethodCompiled },
2457 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2458 (void*)&WB_IsMethodCompilable},
2459 {CC"isMethodQueuedForCompilation0",
2460 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2461 {CC"isIntrinsicAvailable0",
2462 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2463 (void*)&WB_IsIntrinsicAvailable},
2464 {CC"makeMethodNotCompilable0",
2465 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2466 {CC"testSetDontInlineMethod0",
2467 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2468 {CC"getMethodCompilationLevel0",
2469 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2470 {CC"getMethodEntryBci0",
2471 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2472 {CC"getCompileQueueSize",
2473 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2474 {CC"testSetForceInlineMethod0",
2475 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2476 {CC"enqueueMethodForCompilation0",
2477 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2478 {CC"enqueueInitializerForCompilation0",
2479 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2480 {CC"markMethodProfiled",
2481 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2482 {CC"clearMethodState0",
2483 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2484 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2485 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2486 {CC"matchesMethod",
2487 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2488 (void*)&WB_MatchesMethod},
2489 {CC"matchesInline",
2490 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2491 (void*)&WB_MatchesInline},
2492 {CC"shouldPrintAssembly",
2493 CC"(Ljava/lang/reflect/Executable;I)Z",
2494 (void*)&WB_ShouldPrintAssembly},
2495
2496 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2497 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2498 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2499 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2500 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2501 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2502 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2503 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2504 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2505 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2506 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2507 (void*)&WB_SetStringVMFlag},
2508 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2509 (void*)&WB_GetBooleanVMFlag},
2510 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2511 (void*)&WB_GetIntVMFlag},
2512 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2513 (void*)&WB_GetUintVMFlag},
2514 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2515 (void*)&WB_GetIntxVMFlag},
2516 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2517 (void*)&WB_GetUintxVMFlag},
2518 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2519 (void*)&WB_GetUint64VMFlag},
2520 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2521 (void*)&WB_GetSizeTVMFlag},
2522 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2523 (void*)&WB_GetDoubleVMFlag},
2524 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2525 (void*)&WB_GetStringVMFlag},
2526 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2527 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2528 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2529 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2530 {CC"allocateMetaspace",
2531 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2532 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2533 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2534 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2535 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2536 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2537 (void*)&WB_GetNMethod },
2538 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2539 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2540 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2541 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2542 {CC"getCompilationActivityMode",
2543 CC"()I", (void*)&WB_GetCompilationActivityMode},
2544 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2545 (void*)&WB_GetMethodData },
2546 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2547 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2548 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2549 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2550 (void*)&WB_DefineModule },
2551 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2552 (void*)&WB_AddModuleExports },
2553 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2554 (void*)&WB_AddReadsModule },
2555 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2556 (void*)&WB_AddModuleExportsToAllUnnamed },
2557 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2558 (void*)&WB_AddModuleExportsToAll },
2559 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2560 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2561 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2562 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2563 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2564 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2565 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2566 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2567 {CC"remapInstructionOperandFromCPCache0",
2568 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2569 {CC"encodeConstantPoolIndyIndex0",
2570 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2571 {CC"getMethodBooleanOption",
2572 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2573 (void*)&WB_GetMethodBooleaneOption},
2574 {CC"getMethodIntxOption",
2575 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2576 (void*)&WB_GetMethodIntxOption},
2577 {CC"getMethodUintxOption",
2578 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2579 (void*)&WB_GetMethodUintxOption},
2580 {CC"getMethodDoubleOption",
2581 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2582 (void*)&WB_GetMethodDoubleOption},
2583 {CC"getMethodStringOption",
2584 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2585 (void*)&WB_GetMethodStringOption},
2586 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2587 (void*)&WB_GetDefaultArchivePath},
2588 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2589 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2590 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2591 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2592 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2593 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2594 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2595 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2596 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2597 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2598 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2599 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2600 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2601 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2602
2603 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2604 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2605 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2606 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2607 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2608 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2609 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2610 (void*)&WB_AddCompilerDirective },
2611 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2612 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2613 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2614 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2615 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2616 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2617 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2618 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2619 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2620 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2621 (void*)&WB_ConcurrentGCRunTo},
2622 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2623 (void*)&WB_CheckLibSpecifiesNoexecstack},
2624 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2625 {CC"validateCgroup",
2626 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2627 (void*)&WB_ValidateCgroup },
2628 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2629 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2630 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2631 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2632 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2633 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2634 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2635
2636 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2637 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2638 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2639 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2640 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2641 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2642 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2643 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2644 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2645 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2646 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2647
2648 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2649 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2650 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2651
2652 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2653 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2654 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2655 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2656 };
2657
2658
2659 #undef CC
2660
2661 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2662 {
2663 if (WhiteBoxAPI) {
2664 // Make sure that wbclass is loaded by the null classloader
2665 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2666 Handle loader(THREAD, ik->class_loader());
2667 if (loader.is_null()) {
2668 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2669 WhiteBox::set_used();
2670 }
2671 }
2672 }
2673 JVM_END