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