1 /*
2 * Copyright (c) 2012, 2018, 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 "code/codeCache.hpp"
34 #include "compiler/methodMatcher.hpp"
35 #include "compiler/directivesParser.hpp"
36 #include "gc/shared/gcConfig.hpp"
37 #include "gc/shared/genCollectedHeap.hpp"
38 #include "jvmtifiles/jvmtiEnv.hpp"
39 #include "memory/heapShared.inline.hpp"
40 #include "memory/metaspaceShared.hpp"
41 #include "memory/metadataFactory.hpp"
42 #include "memory/iterator.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "memory/universe.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/array.hpp"
47 #include "oops/constantPool.inline.hpp"
48 #include "oops/method.inline.hpp"
49 #include "oops/objArrayKlass.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "oops/typeArrayOop.inline.hpp"
53 #include "prims/resolvedMethodTable.hpp"
54 #include "prims/wbtestmethods/parserTests.hpp"
55 #include "prims/whitebox.inline.hpp"
56 #include "runtime/arguments.hpp"
57 #include "runtime/compilationPolicy.hpp"
58 #include "runtime/deoptimization.hpp"
59 #include "runtime/fieldDescriptor.inline.hpp"
60 #include "runtime/flags/jvmFlag.hpp"
61 #include "runtime/frame.inline.hpp"
62 #include "runtime/handshake.hpp"
63 #include "runtime/interfaceSupport.inline.hpp"
64 #include "runtime/javaCalls.hpp"
65 #include "runtime/jniHandles.inline.hpp"
66 #include "runtime/os.hpp"
67 #include "runtime/sweeper.hpp"
68 #include "runtime/thread.hpp"
69 #include "runtime/threadSMR.hpp"
70 #include "runtime/vm_version.hpp"
71 #include "services/memoryService.hpp"
72 #include "utilities/align.hpp"
73 #include "utilities/debug.hpp"
74 #include "utilities/elfFile.hpp"
75 #include "utilities/exceptions.hpp"
76 #include "utilities/macros.hpp"
77 #if INCLUDE_CDS
78 #include "prims/cdsoffsets.hpp"
79 #endif // INCLUDE_CDS
80 #if INCLUDE_G1GC
81 #include "gc/g1/g1CollectedHeap.inline.hpp"
82 #include "gc/g1/g1ConcurrentMark.hpp"
83 #include "gc/g1/g1ConcurrentMarkThread.hpp"
84 #include "gc/g1/heapRegionRemSet.hpp"
85 #include "gc/g1/heterogeneousHeapRegionManager.hpp"
86 #endif // INCLUDE_G1GC
87 #if INCLUDE_PARALLELGC
88 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
89 #include "gc/parallel/adjoiningGenerations.hpp"
90 #endif // INCLUDE_PARALLELGC
91 #if INCLUDE_NMT
92 #include "services/mallocSiteTable.hpp"
93 #include "services/memTracker.hpp"
94 #include "utilities/nativeCallStack.hpp"
95 #endif // INCLUDE_NMT
96
97 #ifdef LINUX
98 #include "osContainer_linux.hpp"
99 #endif
100
101 #define SIZE_T_MAX_VALUE ((size_t) -1)
102
103 #define CHECK_JNI_EXCEPTION_(env, value) \
104 do { \
105 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
106 THREAD->clear_pending_jni_exception_check(); \
107 if (HAS_PENDING_EXCEPTION) { \
108 return(value); \
109 } \
110 } while (0)
111
112 #define CHECK_JNI_EXCEPTION(env) \
113 do { \
114 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
115 THREAD->clear_pending_jni_exception_check(); \
116 if (HAS_PENDING_EXCEPTION) { \
117 return; \
118 } \
119 } while (0)
120
121 bool WhiteBox::_used = false;
122 volatile bool WhiteBox::compilation_locked = false;
123
124 class VM_WhiteBoxOperation : public VM_Operation {
125 public:
126 VM_WhiteBoxOperation() { }
127 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
128 bool allow_nested_vm_operations() const { return true; }
129 };
130
131
132 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
133 return (jlong)(void*)JNIHandles::resolve(obj);
134 WB_END
135
136 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
137 return heapOopSize;
138 WB_END
139
140 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
141 return os::vm_page_size();
142 WB_END
143
144 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
145 return os::vm_allocation_granularity();
146 WB_END
147
148 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
149 return os::large_page_size();
150 WB_END
151
152 class WBIsKlassAliveClosure : public LockedClassesDo {
153 Symbol* _name;
154 bool _found;
155 public:
156 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
157
158 void do_klass(Klass* k) {
159 if (_found) return;
160 Symbol* ksym = k->name();
161 if (ksym->fast_compare(_name) == 0) {
162 _found = true;
163 }
164 }
165
166 bool found() const {
167 return _found;
168 }
169 };
170
171 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
172 oop h_name = JNIHandles::resolve(name);
173 if (h_name == NULL) return false;
174 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
175 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
176
177 WBIsKlassAliveClosure closure(sym);
178 ClassLoaderDataGraph::classes_do(&closure);
179
180 return closure.found();
181 WB_END
182
183 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
184 oop h_name = JNIHandles::resolve(name);
185 if (h_name == NULL) return false;
186 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_0);
187 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
188 return (jint)sym->refcount();
189 WB_END
190
191
192 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
193 #if INCLUDE_JVMTI
194 ResourceMark rm;
195 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
196 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
197 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
198 assert(err == JVMTI_ERROR_NONE, "must not fail");
199 #endif
200 }
201 WB_END
202
203 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
204 #if INCLUDE_JVMTI
205 ResourceMark rm;
206 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
207 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
208 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
209 assert(err == JVMTI_ERROR_NONE, "must not fail");
210 #endif
211 }
212 WB_END
213
214
215 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
216 return (jlong)Arguments::max_heap_for_compressed_oops();
217 }
218 WB_END
219
220 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
221 CollectorPolicy * p = Universe::heap()->collector_policy();
222 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
223 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
224 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
225 p->space_alignment(), p->heap_alignment());
226 }
227 WB_END
228
229 #ifndef PRODUCT
230 // Forward declaration
231 void TestReservedSpace_test();
232 void TestReserveMemorySpecial_test();
233 void TestVirtualSpace_test();
234 void TestMetaspaceUtils_test();
235 #endif
236
237 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
238 #ifndef PRODUCT
239 TestReservedSpace_test();
240 TestReserveMemorySpecial_test();
241 TestVirtualSpace_test();
242 TestMetaspaceUtils_test();
243 #endif
244 WB_END
245
246 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
247 size_t granularity = os::vm_allocation_granularity();
248 ReservedHeapSpace rhs(100 * granularity, granularity, false);
249 VirtualSpace vs;
250 vs.initialize(rhs, 50 * granularity);
251
252 // Check if constraints are complied
253 if (!( UseCompressedOops && rhs.base() != NULL &&
254 Universe::narrow_oop_base() != NULL &&
255 Universe::narrow_oop_use_implicit_null_checks() )) {
256 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
257 "\tUseCompressedOops is %d\n"
258 "\trhs.base() is " PTR_FORMAT "\n"
259 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
260 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
261 UseCompressedOops,
262 p2i(rhs.base()),
263 p2i(Universe::narrow_oop_base()),
264 Universe::narrow_oop_use_implicit_null_checks());
265 return;
266 }
267 tty->print_cr("Reading from no access area... ");
268 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
269 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
270 WB_END
271
272 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
273 size_t magnitude, size_t iterations) {
274 size_t granularity = os::vm_allocation_granularity();
275 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
276 VirtualSpace vs;
277 if (!vs.initialize(rhs, 0)) {
278 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
279 return 3;
280 }
281
282 int seed = os::random();
283 tty->print_cr("Random seed is %d", seed);
284 os::init_random(seed);
285
286 for (size_t i = 0; i < iterations; i++) {
287
288 // Whether we will shrink or grow
289 bool shrink = os::random() % 2L == 0;
290
291 // Get random delta to resize virtual space
292 size_t delta = (size_t)os::random() % magnitude;
293
294 // If we are about to shrink virtual space below zero, then expand instead
295 if (shrink && vs.committed_size() < delta) {
296 shrink = false;
297 }
298
299 // Resizing by delta
300 if (shrink) {
301 vs.shrink_by(delta);
302 } else {
303 // If expanding fails expand_by will silently return false
304 vs.expand_by(delta, true);
305 }
306 }
307 return 0;
308 }
309
310 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
311 jlong reserved_space_size, jlong magnitude, jlong iterations))
312 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
313 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
314 iterations);
315 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
316 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
317 return 1;
318 }
319
320 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
321 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
322 if (sizeof(size_t) < sizeof(jlong)) {
323 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
324 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
325 || iterations > size_t_max_value) {
326 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
327 return 2;
328 }
329 }
330
331 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
332 (size_t) magnitude, (size_t) iterations);
333 WB_END
334
335 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
336 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
337 WB_END
338
339 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
340 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
341 WB_END
342
343 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
344 return GCConfig::is_gc_selected_ergonomically();
345 WB_END
346
347 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
348 oop p = JNIHandles::resolve(obj);
349 #if INCLUDE_G1GC
350 if (UseG1GC) {
351 G1CollectedHeap* g1h = G1CollectedHeap::heap();
352 const HeapRegion* hr = g1h->heap_region_containing(p);
353 if (hr == NULL) {
354 return false;
355 }
356 return !(hr->is_young());
357 }
358 #endif
359 #if INCLUDE_PARALLELGC
360 if (UseParallelGC) {
361 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
362 return !psh->is_in_young(p);
363 }
364 #endif
365 #if INCLUDE_ZGC
366 if (UseZGC) {
367 return Universe::heap()->is_in(p);
368 }
369 #endif
370 GenCollectedHeap* gch = GenCollectedHeap::heap();
371 return !gch->is_in_young(p);
372 WB_END
373
374 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
375 oop p = JNIHandles::resolve(obj);
376 return Universe::heap()->obj_size(p) * HeapWordSize;
377 WB_END
378
379 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
380 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
381 return (jlong)alignment;
382 WB_END
383
384 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
385 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
386 return (jlong)alignment;
387 WB_END
388
389 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
390 return Universe::heap()->supports_concurrent_phase_control();
391 WB_END
392
393 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
394 const char* const* phases = Universe::heap()->concurrent_phases();
395 jint nphases = 0;
396 for ( ; phases[nphases] != NULL; ++nphases) ;
397
398 ResourceMark rm(thread);
399 ThreadToNativeFromVM ttn(thread);
400 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
401 CHECK_JNI_EXCEPTION_(env, NULL);
402
403 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
404 CHECK_JNI_EXCEPTION_(env, NULL);
405
406 // If push fails, return with pending exception.
407 if (env->PushLocalFrame(nphases) < 0) return NULL;
408 for (jint i = 0; i < nphases; ++i) {
409 jstring phase = env->NewStringUTF(phases[i]);
410 CHECK_JNI_EXCEPTION_(env, NULL);
411 env->SetObjectArrayElement(result, i, phase);
412 CHECK_JNI_EXCEPTION_(env, NULL);
413 }
414 env->PopLocalFrame(NULL);
415
416 return result;
417 WB_END
418
419 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
420 Handle h_name(THREAD, JNIHandles::resolve(name));
421 ResourceMark rm;
422 const char* c_name = java_lang_String::as_utf8_string(h_name());
423 return Universe::heap()->request_concurrent_phase(c_name);
424 WB_END
425
426 #if INCLUDE_G1GC
427
428 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
429 if (UseG1GC) {
430 G1CollectedHeap* g1h = G1CollectedHeap::heap();
431 oop result = JNIHandles::resolve(obj);
432 const HeapRegion* hr = g1h->heap_region_containing(result);
433 return hr->is_humongous();
434 }
435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
436 WB_END
437
438 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
439 if (UseG1GC) {
440 G1CollectedHeap* g1h = G1CollectedHeap::heap();
441 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
442 return hr->is_humongous();
443 }
444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
445 WB_END
446
447 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
448 if (UseG1GC) {
449 G1CollectedHeap* g1h = G1CollectedHeap::heap();
450 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
451 return hr->is_free();
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1h = G1CollectedHeap::heap();
459 size_t nr = g1h->max_regions();
460 return (jlong)nr;
461 }
462 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
463 WB_END
464
465 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
466 if (UseG1GC) {
467 G1CollectedHeap* g1h = G1CollectedHeap::heap();
468 size_t nr = g1h->num_free_regions();
469 return (jlong)nr;
470 }
471 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
472 WB_END
473
474 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
475 if (UseG1GC) {
476 G1CollectedHeap* g1h = G1CollectedHeap::heap();
477 return g1h->concurrent_mark()->cm_thread()->during_cycle();
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
483 if (UseG1GC) {
484 G1CollectedHeap* g1h = G1CollectedHeap::heap();
485 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
486 g1h->collect(GCCause::_wb_conc_mark);
487 return true;
488 }
489 return false;
490 }
491 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
492 WB_END
493
494 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
495 if (UseG1GC) {
496 return (jint)HeapRegion::GrainBytes;
497 }
498 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
499 WB_END
500
501 #endif // INCLUDE_G1GC
502
503 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
504 WB_ENTRY(jlong, WB_DramReservedStart(JNIEnv* env, jobject o))
505 #if INCLUDE_G1GC
506 if (UseG1GC) {
507 G1CollectedHeap* g1h = G1CollectedHeap::heap();
508 if (g1h->g1_collector_policy()->is_hetero_heap()) {
509 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_dram();
510 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
511 } else {
512 return (jlong)g1h->base();
513 }
514 }
515 #endif // INCLUDE_G1GC
516 #if INCLUDE_PARALLELGC
517 if (UseParallelGC) {
518 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
519 if (AllocateOldGenAt != NULL) {
520 MemRegion reserved = ps_heap->young_gen()->reserved();
521 return (jlong)reserved.start();
522 } else {
523 return (jlong)ps_heap->base();
524 }
525 }
526 #endif // INCLUDE_PARALLELGC
527 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedStart: enabled only for G1 and Parallel GC");
528 WB_END
529
530 WB_ENTRY(jlong, WB_DramReservedEnd(JNIEnv* env, jobject o))
531 #if INCLUDE_G1GC
532 if (UseG1GC) {
533 G1CollectedHeap* g1h = G1CollectedHeap::heap();
534 if (g1h->g1_collector_policy()->is_hetero_heap()) {
535 uint end_region = HeterogeneousHeapRegionManager::manager()->end_index_of_dram();
536 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
537 } else {
538 return (jlong)g1h->base() + g1h->collector_policy()->max_heap_byte_size();
539 }
540 }
541 #endif // INCLUDE_G1GC
542 #if INCLUDE_PARALLELGC
543 if (UseParallelGC) {
544 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
545 if (AllocateOldGenAt != NULL) {
546 MemRegion reserved = ps_heap->young_gen()->reserved();
547 return (jlong)reserved.end();
548 } else {
549 return (jlong)ps_heap->reserved_region().end();
550 }
551 }
552 #endif // INCLUDE_PARALLELGC
553 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_DramReservedEnd: enabled only for G1 and Parallel GC");
554 WB_END
555
556 WB_ENTRY(jlong, WB_NvdimmReservedStart(JNIEnv* env, jobject o))
557 #if INCLUDE_G1GC
558 if (UseG1GC) {
559 G1CollectedHeap* g1h = G1CollectedHeap::heap();
560 if (g1h->g1_collector_policy()->is_hetero_heap()) {
561 uint start_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
562 return (jlong)(g1h->base() + start_region * HeapRegion::GrainBytes);
563 } else {
564 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
565 }
566 }
567 #endif // INCLUDE_G1GC
568 #if INCLUDE_PARALLELGC
569 if (UseParallelGC) {
570 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
571 if (AllocateOldGenAt != NULL) {
572 MemRegion reserved = ps_heap->old_gen()->reserved();
573 return (jlong)reserved.start();
574 } else {
575 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
576 }
577 }
578 #endif // INCLUDE_PARALLELGC
579 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedStart: enabled only for G1 and Parallel GC");
580 WB_END
581
582 WB_ENTRY(jlong, WB_NvdimmReservedEnd(JNIEnv* env, jobject o))
583 #if INCLUDE_G1GC
584 if (UseG1GC) {
585 G1CollectedHeap* g1h = G1CollectedHeap::heap();
586 if (g1h->g1_collector_policy()->is_hetero_heap()) {
587 uint end_region = HeterogeneousHeapRegionManager::manager()->start_index_of_nvdimm();
588 return (jlong)(g1h->base() + (end_region + 1) * HeapRegion::GrainBytes - 1);
589 } else {
590 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
591 }
592 }
593 #endif // INCLUDE_G1GC
594 #if INCLUDE_PARALLELGC
595 if (UseParallelGC) {
596 ParallelScavengeHeap* ps_heap = ParallelScavengeHeap::heap();
597 if (AllocateOldGenAt != NULL) {
598 MemRegion reserved = ps_heap->old_gen()->reserved();
599 return (jlong)reserved.end();
600 } else {
601 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: Old gen is not allocated on NV-DIMM using AllocateOldGenAt flag");
602 }
603 }
604 #endif // INCLUDE_PARALLELGC
605 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_NvdimmReservedEnd: enabled only for G1 and Parallel GC");
606 WB_END
607
608 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
609
610 #if INCLUDE_PARALLELGC
611
612 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
613 if (UseParallelGC) {
614 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
615 }
616 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
617 WB_END
618
619 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
620 if (UseParallelGC) {
621 return ParallelScavengeHeap::heap()->generation_alignment();
622 }
623 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
624 WB_END
625
626 #endif // INCLUDE_PARALLELGC
627
628 #if INCLUDE_G1GC
629
630 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
631 if (UseG1GC) {
632 ResourceMark rm(THREAD);
633 G1CollectedHeap* g1h = G1CollectedHeap::heap();
634 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
635 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
636 return JNIHandles::make_local(env, h());
637 }
638 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
639 WB_END
640
641 class OldRegionsLivenessClosure: public HeapRegionClosure {
642
643 private:
644 const int _liveness;
645 size_t _total_count;
646 size_t _total_memory;
647 size_t _total_memory_to_free;
648
649 public:
650 OldRegionsLivenessClosure(int liveness) :
651 _liveness(liveness),
652 _total_count(0),
653 _total_memory(0),
654 _total_memory_to_free(0) { }
655
656 size_t total_count() { return _total_count; }
657 size_t total_memory() { return _total_memory; }
658 size_t total_memory_to_free() { return _total_memory_to_free; }
659
660 bool do_heap_region(HeapRegion* r) {
661 if (r->is_old()) {
662 size_t prev_live = r->marked_bytes();
663 size_t live = r->live_bytes();
664 size_t size = r->used();
665 size_t reg_size = HeapRegion::GrainBytes;
666 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
667 _total_memory += size;
668 ++_total_count;
669 if (size == reg_size) {
670 // we don't include non-full regions since they are unlikely included in mixed gc
671 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
672 _total_memory_to_free += size - prev_live;
673 }
674 }
675 }
676 return false;
677 }
678 };
679
680
681 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
682 if (!UseG1GC) {
683 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
684 }
685 if (liveness < 0) {
686 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
687 }
688
689 G1CollectedHeap* g1h = G1CollectedHeap::heap();
690 OldRegionsLivenessClosure rli(liveness);
691 g1h->heap_region_iterate(&rli);
692
693 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
694 result->long_at_put(0, rli.total_count());
695 result->long_at_put(1, rli.total_memory());
696 result->long_at_put(2, rli.total_memory_to_free());
697 return (jlongArray) JNIHandles::make_local(env, result);
698 WB_END
699
700 #endif // INCLUDE_G1GC
701
702 #if INCLUDE_NMT
703 // Alloc memory using the test memory type so that we can use that to see if
704 // NMT picks it up correctly
705 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
706 jlong addr = 0;
707 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
708 return addr;
709 WB_END
710
711 // Alloc memory with pseudo call stack. The test can create psudo malloc
712 // allocation site to stress the malloc tracking.
713 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
714 address pc = (address)(size_t)pseudo_stack;
715 NativeCallStack stack(&pc, 1);
716 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
717 WB_END
718
719 // Free the memory allocated by NMTAllocTest
720 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
721 os::free((void*)(uintptr_t)mem);
722 WB_END
723
724 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
725 jlong addr = 0;
726
727 addr = (jlong)(uintptr_t)os::reserve_memory(size);
728 MemTracker::record_virtual_memory_type((address)addr, mtTest);
729
730 return addr;
731 WB_END
732
733 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
734 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
735 MemTracker::record_virtual_memory_type((address)addr, mtTest);
736
737 return addr;
738 WB_END
739
740 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
741 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
742 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
743 WB_END
744
745 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
746 os::uncommit_memory((char *)(uintptr_t)addr, size);
747 WB_END
748
749 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
750 os::release_memory((char *)(uintptr_t)addr, size);
751 WB_END
752
753 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
754 // Test that we can downgrade NMT levels but not upgrade them.
755 if (MemTracker::tracking_level() == NMT_off) {
756 MemTracker::transition_to(NMT_off);
757 return MemTracker::tracking_level() == NMT_off;
758 } else {
759 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
760 MemTracker::transition_to(NMT_summary);
761 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
762
763 // Can't go to detail once NMT is set to summary.
764 MemTracker::transition_to(NMT_detail);
765 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
766
767 // Shutdown sets tracking level to minimal.
768 MemTracker::shutdown();
769 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
770
771 // Once the tracking level is minimal, we cannot increase to summary.
772 // The code ignores this request instead of asserting because if the malloc site
773 // table overflows in another thread, it tries to change the code to summary.
774 MemTracker::transition_to(NMT_summary);
775 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
776
777 // Really can never go up to detail, verify that the code would never do this.
778 MemTracker::transition_to(NMT_detail);
779 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
780 return MemTracker::tracking_level() == NMT_minimal;
781 }
782 WB_END
783
784 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
785 int hash_size = MallocSiteTable::hash_buckets();
786 assert(hash_size > 0, "NMT hash_size should be > 0");
787 return (jint)hash_size;
788 WB_END
789 #endif // INCLUDE_NMT
790
791 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
792 assert(method != NULL, "method should not be null");
793 ThreadToNativeFromVM ttn(thread);
794 return env->FromReflectedMethod(method);
795 }
796
797 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
798 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
799 private:
800 int _result;
801 const bool _make_not_entrant;
802 public:
803 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
804 _result(0), _make_not_entrant(make_not_entrant) { }
805 int result() const { return _result; }
806
807 void doit() {
808 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
809 if (t->has_last_Java_frame()) {
810 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
811 frame* f = fst.current();
812 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
813 RegisterMap* reg_map = fst.register_map();
814 Deoptimization::deoptimize(t, *f, reg_map);
815 if (_make_not_entrant) {
816 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
817 assert(cm != NULL, "sanity check");
818 cm->make_not_entrant();
819 }
820 ++_result;
821 }
822 }
823 }
824 }
825 }
826 };
827
828 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
829 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
830 VMThread::execute(&op);
831 return op.result();
832 WB_END
833
834 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
835 MutexLockerEx mu(Compile_lock);
836 CodeCache::mark_all_nmethods_for_deoptimization();
837 VM_Deoptimize op;
838 VMThread::execute(&op);
839 WB_END
840
841 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
842 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
843 int result = 0;
844 CHECK_JNI_EXCEPTION_(env, result);
845 MutexLockerEx mu(Compile_lock);
846 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
847 if (is_osr) {
848 result += mh->mark_osr_nmethods();
849 } else if (mh->code() != NULL) {
850 mh->code()->mark_for_deoptimization();
851 ++result;
852 }
853 result += CodeCache::mark_for_deoptimization(mh());
854 if (result > 0) {
855 VM_Deoptimize op;
856 VMThread::execute(&op);
857 }
858 return result;
859 WB_END
860
861 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
862 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
863 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
864 MutexLockerEx mu(Compile_lock);
865 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
866 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
867 if (code == NULL) {
868 return JNI_FALSE;
869 }
870 return (code->is_alive() && !code->is_marked_for_deoptimization());
871 WB_END
872
873 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
874 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
875 return false;
876 }
877 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
878 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
879 MutexLockerEx mu(Compile_lock);
880 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
881 if (is_osr) {
882 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
883 } else {
884 return CompilationPolicy::can_be_compiled(mh, comp_level);
885 }
886 WB_END
887
888 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
889 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
890 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
891 MutexLockerEx mu(Compile_lock);
892 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
893 return mh->queued_for_compilation();
894 WB_END
895
896 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
897 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
898 return false; // Intrinsic is not available on a non-existent compilation level.
899 }
900 jmethodID method_id, compilation_context_id;
901 method_id = reflected_method_to_jmid(thread, env, method);
902 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
903 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
904
905 DirectiveSet* directive;
906 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
907 assert(comp != NULL, "compiler not available");
908 if (compilation_context != NULL) {
909 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
910 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
911 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
912 directive = DirectivesStack::getMatchingDirective(cch, comp);
913 } else {
914 // Calling with NULL matches default directive
915 directive = DirectivesStack::getDefaultDirective(comp);
916 }
917 bool result = comp->is_intrinsic_available(mh, directive);
918 DirectivesStack::release(directive);
919 return result;
920 WB_END
921
922 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
923 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
924 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
925 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
926 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
927 return (code != NULL ? code->comp_level() : CompLevel_none);
928 WB_END
929
930 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
931 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
932 CHECK_JNI_EXCEPTION(env);
933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
934 if (is_osr) {
935 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
936 } else {
937 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
938 }
939 WB_END
940
941 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
942 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
943 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
945 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
946 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
947 WB_END
948
949 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
950 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
951 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
952 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
953 bool result = mh->dont_inline();
954 mh->set_dont_inline(value == JNI_TRUE);
955 return result;
956 WB_END
957
958 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
959 if (comp_level == CompLevel_any) {
960 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
961 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
962 } else {
963 return CompileBroker::queue_size(comp_level);
964 }
965 WB_END
966
967 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
968 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
969 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
970 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
971 bool result = mh->force_inline();
972 mh->set_force_inline(value == JNI_TRUE);
973 return result;
974 WB_END
975
976 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
977 // Screen for unavailable/bad comp level or null method
978 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
979 if (method == NULL) {
980 tty->print_cr("WB error: request to compile NULL method");
981 return false;
982 }
983 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
984 tty->print_cr("WB error: invalid compilation level %d", comp_level);
985 return false;
986 }
987 if (comp == NULL) {
988 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
989 return false;
990 }
991
992 // Check if compilation is blocking
993 methodHandle mh(THREAD, method);
994 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
995 bool is_blocking = !directive->BackgroundCompilationOption;
996 DirectivesStack::release(directive);
997
998 // Compile method and check result
999 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
1000 MutexLockerEx mu(Compile_lock);
1001 bool is_queued = mh->queued_for_compilation();
1002 if ((!is_blocking && is_queued) || nm != NULL) {
1003 return true;
1004 }
1005 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1006 mh->print_short_name(tty);
1007 tty->cr();
1008 if (is_blocking && is_queued) {
1009 tty->print_cr("WB error: blocking compilation is still in queue!");
1010 }
1011 return false;
1012 }
1013
1014 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1015 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1016 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1017 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1018 WB_END
1019
1020 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1021 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1022 Method* clinit = ik->class_initializer();
1023 if (clinit == NULL) {
1024 return false;
1025 }
1026 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1027 WB_END
1028
1029 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1030 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1031 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1032
1033 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1034 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1035 bool result = directive->PrintAssemblyOption;
1036 DirectivesStack::release(directive);
1037
1038 return result;
1039 WB_END
1040
1041 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1042 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1043 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1044
1045 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1046
1047 ResourceMark rm;
1048 const char* error_msg = NULL;
1049 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1050 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1051
1052 if (m == NULL) {
1053 assert(error_msg != NULL, "Always have an error message");
1054 tty->print_cr("Got error: %s", error_msg);
1055 return -1; // Pattern failed
1056 }
1057
1058 // Pattern works - now check if it matches
1059 int result;
1060 if (m->match(mh, InlineMatcher::force_inline)) {
1061 result = 2; // Force inline match
1062 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1063 result = 1; // Dont inline match
1064 } else {
1065 result = 0; // No match
1066 }
1067 delete m;
1068 return result;
1069 WB_END
1070
1071 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1072 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1073 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1074
1075 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1076
1077 ResourceMark rm;
1078 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1079
1080 const char* error_msg = NULL;
1081
1082 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
1083 if (m == NULL) {
1084 assert(error_msg != NULL, "Must have error_msg");
1085 tty->print_cr("Got error: %s", error_msg);
1086 return -1;
1087 }
1088
1089 // Pattern works - now check if it matches
1090 int result = m->matches(mh);
1091 delete m;
1092 assert(result == 0 || result == 1, "Result out of range");
1093 return result;
1094 WB_END
1095
1096 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1097 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1098 CHECK_JNI_EXCEPTION(env);
1099 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1100 MutexLockerEx mu(Compile_lock);
1101 MethodData* mdo = mh->method_data();
1102 MethodCounters* mcs = mh->method_counters();
1103
1104 if (mdo != NULL) {
1105 mdo->init();
1106 ResourceMark rm;
1107 int arg_count = mdo->method()->size_of_parameters();
1108 for (int i = 0; i < arg_count; i++) {
1109 mdo->set_arg_modified(i, 0);
1110 }
1111 MutexLockerEx mu(mdo->extra_data_lock());
1112 mdo->clean_method_data(/*always_clean*/true);
1113 }
1114
1115 mh->clear_not_c1_compilable();
1116 mh->clear_not_c2_compilable();
1117 mh->clear_not_c2_osr_compilable();
1118 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1119 if (mcs != NULL) {
1120 mcs->backedge_counter()->init();
1121 mcs->invocation_counter()->init();
1122 mcs->set_interpreter_invocation_count(0);
1123 mcs->set_interpreter_throwout_count(0);
1124
1125 #ifdef TIERED
1126 mcs->set_rate(0.0F);
1127 mh->set_prev_event_count(0);
1128 mh->set_prev_time(0);
1129 #endif
1130 }
1131 WB_END
1132
1133 template <typename T>
1134 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1135 if (name == NULL) {
1136 return false;
1137 }
1138 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1139 const char* flag_name = env->GetStringUTFChars(name, NULL);
1140 CHECK_JNI_EXCEPTION_(env, false);
1141 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1142 env->ReleaseStringUTFChars(name, flag_name);
1143 return (result == JVMFlag::SUCCESS);
1144 }
1145
1146 template <typename T>
1147 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1148 if (name == NULL) {
1149 return false;
1150 }
1151 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1152 const char* flag_name = env->GetStringUTFChars(name, NULL);
1153 CHECK_JNI_EXCEPTION_(env, false);
1154 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1155 env->ReleaseStringUTFChars(name, flag_name);
1156 return (result == JVMFlag::SUCCESS);
1157 }
1158
1159 template <typename T>
1160 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1161 ResourceMark rm(thread);
1162 jclass clazz = env->FindClass(name->as_C_string());
1163 CHECK_JNI_EXCEPTION_(env, NULL);
1164 jmethodID methodID = env->GetStaticMethodID(clazz,
1165 vmSymbols::valueOf_name()->as_C_string(),
1166 sig->as_C_string());
1167 CHECK_JNI_EXCEPTION_(env, NULL);
1168 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1169 CHECK_JNI_EXCEPTION_(env, NULL);
1170 return result;
1171 }
1172
1173 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1174 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1175 }
1176 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1177 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1178 }
1179 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1180 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1181 }
1182 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1183 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1184 }*/
1185 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1186 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1187 }
1188
1189 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1190 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1191 const char* flag_name = env->GetStringUTFChars(name, NULL);
1192 CHECK_JNI_EXCEPTION_(env, NULL);
1193 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1194 env->ReleaseStringUTFChars(name, flag_name);
1195 return result;
1196 }
1197
1198 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1199 JVMFlag* flag = getVMFlag(thread, env, name);
1200 return (flag != NULL) && flag->is_constant_in_binary();
1201 WB_END
1202
1203 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1204 JVMFlag* flag = getVMFlag(thread, env, name);
1205 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1206 WB_END
1207
1208 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1209 bool result;
1210 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1211 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1212 return booleanBox(thread, env, result);
1213 }
1214 return NULL;
1215 WB_END
1216
1217 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1218 int result;
1219 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1220 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1221 return longBox(thread, env, result);
1222 }
1223 return NULL;
1224 WB_END
1225
1226 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1227 uint result;
1228 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1229 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1230 return longBox(thread, env, result);
1231 }
1232 return NULL;
1233 WB_END
1234
1235 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1236 intx result;
1237 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1238 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1239 return longBox(thread, env, result);
1240 }
1241 return NULL;
1242 WB_END
1243
1244 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1245 uintx result;
1246 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1247 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1248 return longBox(thread, env, result);
1249 }
1250 return NULL;
1251 WB_END
1252
1253 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1254 uint64_t result;
1255 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1256 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1257 return longBox(thread, env, result);
1258 }
1259 return NULL;
1260 WB_END
1261
1262 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1263 size_t result;
1264 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1265 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1266 return longBox(thread, env, result);
1267 }
1268 return NULL;
1269 WB_END
1270
1271 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1272 double result;
1273 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1274 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1275 return doubleBox(thread, env, result);
1276 }
1277 return NULL;
1278 WB_END
1279
1280 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1281 ccstr ccstrResult;
1282 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1283 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1284 jstring result = env->NewStringUTF(ccstrResult);
1285 CHECK_JNI_EXCEPTION_(env, NULL);
1286 return result;
1287 }
1288 return NULL;
1289 WB_END
1290
1291 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1292 bool result = value == JNI_TRUE ? true : false;
1293 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1294 WB_END
1295
1296 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1297 int result = value;
1298 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1299 WB_END
1300
1301 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1302 uint result = value;
1303 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1304 WB_END
1305
1306 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1307 intx result = value;
1308 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1309 WB_END
1310
1311 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1312 uintx result = value;
1313 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1314 WB_END
1315
1316 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1317 uint64_t result = value;
1318 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1319 WB_END
1320
1321 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1322 size_t result = value;
1323 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1324 WB_END
1325
1326 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1327 double result = value;
1328 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1329 WB_END
1330
1331 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1332 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1333 const char* ccstrValue;
1334 if (value == NULL) {
1335 ccstrValue = NULL;
1336 }
1337 else {
1338 ccstrValue = env->GetStringUTFChars(value, NULL);
1339 CHECK_JNI_EXCEPTION(env);
1340 }
1341 ccstr ccstrResult = ccstrValue;
1342 bool needFree;
1343 {
1344 ThreadInVMfromNative ttvfn(thread); // back to VM
1345 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1346 }
1347 if (value != NULL) {
1348 env->ReleaseStringUTFChars(value, ccstrValue);
1349 }
1350 if (needFree) {
1351 FREE_C_HEAP_ARRAY(char, ccstrResult);
1352 }
1353 WB_END
1354
1355 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1356 WhiteBox::compilation_locked = true;
1357 WB_END
1358
1359 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1360 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1361 WhiteBox::compilation_locked = false;
1362 mo.notify_all();
1363 WB_END
1364
1365 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1366 // Force a code cache sweep and block until it finished
1367 NMethodSweeper::force_sweep();
1368 WB_END
1369
1370 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1371 ResourceMark rm(THREAD);
1372 int len;
1373 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1374 return (StringTable::lookup(name, len) != NULL);
1375 WB_END
1376
1377 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1378 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1379 Universe::heap()->collect(GCCause::_wb_full_gc);
1380 #if INCLUDE_G1GC
1381 if (UseG1GC) {
1382 // Needs to be cleared explicitly for G1
1383 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1384 }
1385 #endif // INCLUDE_G1GC
1386 WB_END
1387
1388 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1389 Universe::heap()->collect(GCCause::_wb_young_gc);
1390 WB_END
1391
1392 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1393 // static+volatile in order to force the read to happen
1394 // (not be eliminated by the compiler)
1395 static char c;
1396 static volatile char* p;
1397
1398 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1399 if (p == NULL) {
1400 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1401 }
1402
1403 c = *p;
1404 WB_END
1405
1406 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1407 const char* features = VM_Version::features_string();
1408 ThreadToNativeFromVM ttn(thread);
1409 jstring features_string = env->NewStringUTF(features);
1410
1411 CHECK_JNI_EXCEPTION_(env, NULL);
1412
1413 return features_string;
1414 WB_END
1415
1416 int WhiteBox::get_blob_type(const CodeBlob* code) {
1417 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1418 if (code->is_aot()) {
1419 return -1;
1420 }
1421 return CodeCache::get_code_heap(code)->code_blob_type();
1422 }
1423
1424 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1425 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1426 return CodeCache::get_code_heap(blob_type);
1427 }
1428
1429 struct CodeBlobStub {
1430 CodeBlobStub(const CodeBlob* blob) :
1431 name(os::strdup(blob->name())),
1432 size(blob->size()),
1433 blob_type(WhiteBox::get_blob_type(blob)),
1434 address((jlong) blob) { }
1435 ~CodeBlobStub() { os::free((void*) name); }
1436 const char* const name;
1437 const jint size;
1438 const jint blob_type;
1439 const jlong address;
1440 };
1441
1442 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1443 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1444 CHECK_JNI_EXCEPTION_(env, NULL);
1445 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1446
1447 jstring name = env->NewStringUTF(cb->name);
1448 CHECK_JNI_EXCEPTION_(env, NULL);
1449 env->SetObjectArrayElement(result, 0, name);
1450
1451 jobject obj = integerBox(thread, env, cb->size);
1452 CHECK_JNI_EXCEPTION_(env, NULL);
1453 env->SetObjectArrayElement(result, 1, obj);
1454
1455 obj = integerBox(thread, env, cb->blob_type);
1456 CHECK_JNI_EXCEPTION_(env, NULL);
1457 env->SetObjectArrayElement(result, 2, obj);
1458
1459 obj = longBox(thread, env, cb->address);
1460 CHECK_JNI_EXCEPTION_(env, NULL);
1461 env->SetObjectArrayElement(result, 3, obj);
1462
1463 return result;
1464 }
1465
1466 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1467 ResourceMark rm(THREAD);
1468 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1469 CHECK_JNI_EXCEPTION_(env, NULL);
1470 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1471 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1472 jobjectArray result = NULL;
1473 if (code == NULL) {
1474 return result;
1475 }
1476 int comp_level = code->comp_level();
1477 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1478
1479 ThreadToNativeFromVM ttn(thread);
1480 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1481 CHECK_JNI_EXCEPTION_(env, NULL);
1482 result = env->NewObjectArray(5, clazz, NULL);
1483 if (result == NULL) {
1484 return result;
1485 }
1486
1487 CodeBlobStub stub(code);
1488 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1489 CHECK_JNI_EXCEPTION_(env, NULL);
1490 env->SetObjectArrayElement(result, 0, codeBlob);
1491
1492 jobject level = integerBox(thread, env, comp_level);
1493 CHECK_JNI_EXCEPTION_(env, NULL);
1494 env->SetObjectArrayElement(result, 1, level);
1495
1496 jbyteArray insts = env->NewByteArray(insts_size);
1497 CHECK_JNI_EXCEPTION_(env, NULL);
1498 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1499 env->SetObjectArrayElement(result, 2, insts);
1500
1501 jobject id = integerBox(thread, env, code->compile_id());
1502 CHECK_JNI_EXCEPTION_(env, NULL);
1503 env->SetObjectArrayElement(result, 3, id);
1504
1505 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1506 CHECK_JNI_EXCEPTION_(env, NULL);
1507 env->SetObjectArrayElement(result, 4, entry_point);
1508
1509 return result;
1510 WB_END
1511
1512 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1513 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1514 BufferBlob* blob;
1515 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1516 if (full_size < size) {
1517 full_size += align_up(size - full_size, oopSize);
1518 }
1519 {
1520 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1521 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1522 if (blob != NULL) {
1523 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1524 }
1525 }
1526 // Track memory usage statistic after releasing CodeCache_lock
1527 MemoryService::track_code_cache_memory_usage();
1528 return blob;
1529 }
1530
1531 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1532 if (size < 0) {
1533 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1534 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1535 }
1536 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1537 WB_END
1538
1539 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1540 if (addr == 0) {
1541 return;
1542 }
1543 BufferBlob::free((BufferBlob*) addr);
1544 WB_END
1545
1546 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1547 ResourceMark rm;
1548 GrowableArray<CodeBlobStub*> blobs;
1549 {
1550 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1551 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1552 if (heap == NULL) {
1553 return NULL;
1554 }
1555 for (CodeBlob* cb = (CodeBlob*) heap->first();
1556 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1557 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1558 new (stub) CodeBlobStub(cb);
1559 blobs.append(stub);
1560 }
1561 }
1562 if (blobs.length() == 0) {
1563 return NULL;
1564 }
1565 ThreadToNativeFromVM ttn(thread);
1566 jobjectArray result = NULL;
1567 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1568 CHECK_JNI_EXCEPTION_(env, NULL);
1569 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1570 CHECK_JNI_EXCEPTION_(env, NULL);
1571 if (result == NULL) {
1572 return result;
1573 }
1574 int i = 0;
1575 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1576 it != blobs.end(); ++it) {
1577 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1578 CHECK_JNI_EXCEPTION_(env, NULL);
1579 env->SetObjectArrayElement(result, i, obj);
1580 CHECK_JNI_EXCEPTION_(env, NULL);
1581 ++i;
1582 }
1583 return result;
1584 WB_END
1585
1586 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1587 return CompileBroker::get_compilation_activity_mode();
1588 WB_END
1589
1590 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1591 if (addr == 0) {
1592 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1593 "WB_GetCodeBlob: addr is null");
1594 }
1595 ThreadToNativeFromVM ttn(thread);
1596 CodeBlobStub stub((CodeBlob*) addr);
1597 return codeBlob2objectArray(thread, env, &stub);
1598 WB_END
1599
1600 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1601 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1602 CHECK_JNI_EXCEPTION_(env, 0);
1603 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1604 return (jlong) mh->method_data();
1605 WB_END
1606
1607 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1608 return (jlong) Thread::current()->stack_size();
1609 WB_END
1610
1611 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1612 JavaThread* t = JavaThread::current();
1613 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1614 WB_END
1615
1616
1617 int WhiteBox::array_bytes_to_length(size_t bytes) {
1618 return Array<u1>::bytes_to_length(bytes);
1619 }
1620
1621 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1622 if (size < 0) {
1623 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1624 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1625 }
1626
1627 oop class_loader_oop = JNIHandles::resolve(class_loader);
1628 ClassLoaderData* cld = class_loader_oop != NULL
1629 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1630 : ClassLoaderData::the_null_class_loader_data();
1631
1632 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1633
1634 return (jlong)(uintptr_t)metadata;
1635 WB_END
1636
1637 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1638 oop class_loader_oop = JNIHandles::resolve(class_loader);
1639 ClassLoaderData* cld = class_loader_oop != NULL
1640 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1641 : ClassLoaderData::the_null_class_loader_data();
1642
1643 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1644 WB_END
1645
1646 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1647 jstring version, jstring location, jobjectArray packages))
1648 ResourceMark rm(THREAD);
1649
1650 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1651 objArrayHandle packages_h(THREAD, packages_oop);
1652 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1653
1654 char** pkgs = NULL;
1655 if (num_packages > 0) {
1656 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1657 for (int x = 0; x < num_packages; x++) {
1658 oop pkg_str = packages_h->obj_at(x);
1659 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1660 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1661 err_msg("Bad package name"));
1662 }
1663 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1664 }
1665 }
1666 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1667 WB_END
1668
1669 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1670 ResourceMark rm(THREAD);
1671 char* package_name = NULL;
1672 if (package != NULL) {
1673 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1674 }
1675 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1676 WB_END
1677
1678 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1679 ResourceMark rm(THREAD);
1680 char* package_name = NULL;
1681 if (package != NULL) {
1682 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1683 }
1684 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1685 WB_END
1686
1687 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1688 ResourceMark rm(THREAD);
1689 char* package_name = NULL;
1690 if (package != NULL) {
1691 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1692 }
1693 Modules::add_module_exports(module, package_name, NULL, CHECK);
1694 WB_END
1695
1696 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1697 Modules::add_reads_module(from_module, source_module, CHECK);
1698 WB_END
1699
1700 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1701 if (inc < 0) {
1702 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1703 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1704 }
1705
1706 jlong max_size_t = (jlong) ((size_t) -1);
1707 if (inc > max_size_t) {
1708 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1709 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1710 }
1711
1712 size_t new_cap_until_GC = 0;
1713 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1714 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1715 if (!success) {
1716 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1717 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1718 "due to contention with another thread");
1719 }
1720 return (jlong) new_cap_until_GC;
1721 WB_END
1722
1723 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1724 return (jlong) MetaspaceGC::capacity_until_GC();
1725 WB_END
1726
1727 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1728 return MetaspaceGC::should_concurrent_collect();
1729 WB_END
1730
1731 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1732 return (jlong)Metaspace::reserve_alignment();
1733 WB_END
1734
1735 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1736 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1737 Monitor::_safepoint_check_always :
1738 Monitor::_safepoint_check_never;
1739 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1740 attemptedNoSafepointValue == JNI_TRUE);
1741 WB_END
1742
1743 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1744 oop obj_oop = JNIHandles::resolve(obj);
1745 return (jboolean) obj_oop->mark()->has_monitor();
1746 WB_END
1747
1748 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1749 VM_ForceSafepoint force_safepoint_op;
1750 VMThread::execute(&force_safepoint_op);
1751 WB_END
1752
1753 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1754 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1755 return (jlong) ik->constants();
1756 WB_END
1757
1758 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1759 return ConstantPool::CPCACHE_INDEX_TAG;
1760 WB_END
1761
1762 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1763 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1764 ConstantPool* cp = ik->constants();
1765 if (cp->cache() == NULL) {
1766 return -1;
1767 }
1768 return cp->cache()->length();
1769 WB_END
1770
1771 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1772 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1773 ConstantPool* cp = ik->constants();
1774 if (cp->cache() == NULL) {
1775 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1776 }
1777 jint cpci = index;
1778 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1779 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1780 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1781 }
1782 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1783 return cpi;
1784 WB_END
1785
1786 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1787 return ConstantPool::encode_invokedynamic_index(index);
1788 WB_END
1789
1790 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1791 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1792 VMThread::execute(&clear_ics);
1793 WB_END
1794
1795 template <typename T>
1796 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1797 assert(value != NULL, "sanity");
1798 if (method == NULL || name == NULL) {
1799 return false;
1800 }
1801 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1802 CHECK_JNI_EXCEPTION_(env, false);
1803 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1804 // can't be in VM when we call JNI
1805 ThreadToNativeFromVM ttnfv(thread);
1806 const char* flag_name = env->GetStringUTFChars(name, NULL);
1807 CHECK_JNI_EXCEPTION_(env, false);
1808 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1809 env->ReleaseStringUTFChars(name, flag_name);
1810 return result;
1811 }
1812
1813 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1814 bool result;
1815 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1816 // can't be in VM when we call JNI
1817 ThreadToNativeFromVM ttnfv(thread);
1818 return booleanBox(thread, env, result);
1819 }
1820 return NULL;
1821 WB_END
1822
1823 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1824 intx result;
1825 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1826 // can't be in VM when we call JNI
1827 ThreadToNativeFromVM ttnfv(thread);
1828 return longBox(thread, env, result);
1829 }
1830 return NULL;
1831 WB_END
1832
1833 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1834 uintx result;
1835 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1836 // can't be in VM when we call JNI
1837 ThreadToNativeFromVM ttnfv(thread);
1838 return longBox(thread, env, result);
1839 }
1840 return NULL;
1841 WB_END
1842
1843 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1844 double result;
1845 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1846 // can't be in VM when we call JNI
1847 ThreadToNativeFromVM ttnfv(thread);
1848 return doubleBox(thread, env, result);
1849 }
1850 return NULL;
1851 WB_END
1852
1853 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1854 ccstr ccstrResult;
1855 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1856 // can't be in VM when we call JNI
1857 ThreadToNativeFromVM ttnfv(thread);
1858 jstring result = env->NewStringUTF(ccstrResult);
1859 CHECK_JNI_EXCEPTION_(env, NULL);
1860 return result;
1861 }
1862 return NULL;
1863 WB_END
1864
1865 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1866 const char* p = Arguments::get_default_shared_archive_path();
1867 ThreadToNativeFromVM ttn(thread);
1868 jstring path_string = env->NewStringUTF(p);
1869
1870 CHECK_JNI_EXCEPTION_(env, NULL);
1871
1872 return path_string;
1873 WB_END
1874
1875 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1876 return UseSharedSpaces;
1877 WB_END
1878
1879 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1880 oop obj_oop = JNIHandles::resolve(obj);
1881 return HeapShared::is_archived_object(obj_oop);
1882 WB_END
1883
1884 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1885 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1886 WB_END
1887
1888 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1889 return !HeapShared::closed_archive_heap_region_mapped();
1890 WB_END
1891
1892 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1893 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1894 if (k->is_instance_klass()) {
1895 InstanceKlass *ik = InstanceKlass::cast(k);
1896 ConstantPool *cp = ik->constants();
1897 objArrayOop refs = cp->resolved_references();
1898 return (jobject)JNIHandles::make_local(env, refs);
1899 } else {
1900 return NULL;
1901 }
1902 WB_END
1903
1904 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1905 return HeapShared::open_archive_heap_region_mapped();
1906 WB_END
1907
1908 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1909 #if INCLUDE_CDS
1910 # ifdef _LP64
1911 if (!UseCompressedOops || !UseCompressedClassPointers) {
1912 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1913 return false;
1914 }
1915 # endif // _LP64
1916 return true;
1917 #else
1918 return false;
1919 #endif // INCLUDE_CDS
1920 WB_END
1921
1922 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1923 return HeapShared::is_heap_object_archiving_allowed();
1924 WB_END
1925
1926
1927 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1928 #if INCLUDE_JFR
1929 return true;
1930 #else
1931 return false;
1932 #endif // INCLUDE_JFR
1933 WB_END
1934
1935 #if INCLUDE_CDS
1936
1937 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1938 ResourceMark rm;
1939 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1940 int result = CDSOffsets::find_offset(c_name);
1941 return (jint)result;
1942 WB_END
1943
1944 #endif // INCLUDE_CDS
1945
1946 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1947 class TraceSelfClosure : public ThreadClosure {
1948 jint _num_threads_completed;
1949
1950 void do_thread(Thread* th) {
1951 assert(th->is_Java_thread(), "sanity");
1952 JavaThread* jt = (JavaThread*)th;
1953 ResourceMark rm;
1954
1955 jt->print_on(tty);
1956 jt->print_stack_on(tty);
1957 tty->cr();
1958 Atomic::inc(&_num_threads_completed);
1959 }
1960
1961 public:
1962 TraceSelfClosure() : _num_threads_completed(0) {}
1963
1964 jint num_threads_completed() const { return _num_threads_completed; }
1965 };
1966 TraceSelfClosure tsc;
1967
1968 if (all_threads) {
1969 Handshake::execute(&tsc);
1970 } else {
1971 oop thread_oop = JNIHandles::resolve(thread_handle);
1972 if (thread_oop != NULL) {
1973 JavaThread* target = java_lang_Thread::thread(thread_oop);
1974 Handshake::execute(&tsc, target);
1975 }
1976 }
1977 return tsc.num_threads_completed();
1978 WB_END
1979
1980 //Some convenience methods to deal with objects from java
1981 int WhiteBox::offset_for_field(const char* field_name, oop object,
1982 Symbol* signature_symbol) {
1983 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1984 Thread* THREAD = Thread::current();
1985
1986 //Get the class of our object
1987 Klass* arg_klass = object->klass();
1988 //Turn it into an instance-klass
1989 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1990
1991 //Create symbols to look for in the class
1992 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1993 THREAD);
1994
1995 //To be filled in with an offset of the field we're looking for
1996 fieldDescriptor fd;
1997
1998 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1999 if (res == NULL) {
2000 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2001 name_symbol->as_C_string());
2002 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2003 }
2004
2005 //fetch the field at the offset we've found
2006 int dest_offset = fd.offset();
2007
2008 return dest_offset;
2009 }
2010
2011
2012 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2013 int offset = offset_for_field(field_name, object,
2014 vmSymbols::string_signature());
2015 oop string = object->obj_field(offset);
2016 if (string == NULL) {
2017 return NULL;
2018 }
2019 const char* ret = java_lang_String::as_utf8_string(string);
2020 return ret;
2021 }
2022
2023 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2024 int offset =
2025 offset_for_field(field_name, object, vmSymbols::bool_signature());
2026 bool ret = (object->bool_field(offset) == JNI_TRUE);
2027 return ret;
2028 }
2029
2030 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2031 ResourceMark rm;
2032 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2033
2034 // one by one registration natives for exception catching
2035 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2036 CHECK_JNI_EXCEPTION(env);
2037 for (int i = 0, n = method_count; i < n; ++i) {
2038 // Skip dummy entries
2039 if (method_array[i].fnPtr == NULL) continue;
2040 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2041 jthrowable throwable_obj = env->ExceptionOccurred();
2042 if (throwable_obj != NULL) {
2043 env->ExceptionClear();
2044 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2045 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2046 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2047 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
2048 method_array[i].name, method_array[i].signature);
2049 }
2050 } else {
2051 // Registration failed unexpectedly.
2052 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
2053 method_array[i].name, method_array[i].signature);
2054 env->UnregisterNatives(wbclass);
2055 break;
2056 }
2057 }
2058 }
2059 }
2060
2061 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2062 // can't be in VM when we call JNI
2063 ThreadToNativeFromVM ttnfv(thread);
2064 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2065 CHECK_JNI_EXCEPTION_(env, 0);
2066 int ret;
2067 {
2068 ThreadInVMfromNative ttvfn(thread); // back to VM
2069 ret = DirectivesParser::parse_string(dir, tty);
2070 }
2071 env->ReleaseStringUTFChars(compDirect, dir);
2072 // -1 for error parsing directive. Return 0 as number of directives added.
2073 if (ret == -1) {
2074 ret = 0;
2075 }
2076 return (jint) ret;
2077 WB_END
2078
2079 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2080 DirectivesStack::pop(count);
2081 WB_END
2082
2083 // Checks that the library libfile has the noexecstack bit set.
2084 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2085 jboolean ret = false;
2086 #ifdef LINUX
2087 // Can't be in VM when we call JNI.
2088 ThreadToNativeFromVM ttnfv(thread);
2089 const char* lf = env->GetStringUTFChars(libfile, NULL);
2090 CHECK_JNI_EXCEPTION_(env, 0);
2091 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2092 env->ReleaseStringUTFChars(libfile, lf);
2093 #endif
2094 return ret;
2095 WB_END
2096
2097 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2098 LINUX_ONLY(return OSContainer::is_containerized();)
2099 return false;
2100 WB_END
2101
2102 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2103 os::print_os_info(tty);
2104 WB_END
2105
2106 // Elf decoder
2107 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2108 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2109 ElfFile::_do_not_cache_elf_section = true;
2110 #endif
2111 WB_END
2112
2113 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o))
2114 return (jint) ResolvedMethodTable::removed_entries_count();
2115 WB_END
2116
2117 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2118 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2119 WB_END
2120
2121 #define CC (char*)
2122
2123 static JNINativeMethod methods[] = {
2124 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2125 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2126 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2127 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2128 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2129 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2130 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2131 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2132 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2133 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2134 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2135 {CC"parseCommandLine0",
2136 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2137 (void*) &WB_ParseCommandLine
2138 },
2139 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2140 (void*)&WB_AddToBootstrapClassLoaderSearch},
2141 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2142 (void*)&WB_AddToSystemClassLoaderSearch},
2143 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2144 (void*)&WB_GetCompressedOopsMaxHeapSize},
2145 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2146 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2147 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2148 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2149 #if INCLUDE_CDS
2150 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2151 #endif
2152 #if INCLUDE_G1GC
2153 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2154 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2155 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2156 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2157 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2158 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2159 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2160 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2161 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2162 (void*)&WB_G1AuxiliaryMemoryUsage },
2163 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2164 #endif // INCLUDE_G1GC
2165 #if INCLUDE_G1GC || INCLUDE_PARALLELGC
2166 {CC"dramReservedStart", CC"()J", (void*)&WB_DramReservedStart },
2167 {CC"dramReservedEnd", CC"()J", (void*)&WB_DramReservedEnd },
2168 {CC"nvdimmReservedStart", CC"()J", (void*)&WB_NvdimmReservedStart },
2169 {CC"nvdimmReservedEnd", CC"()J", (void*)&WB_NvdimmReservedEnd },
2170 #endif // INCLUDE_G1GC || INCLUDE_PARALLELGC
2171 #if INCLUDE_PARALLELGC
2172 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2173 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2174 #endif
2175 #if INCLUDE_NMT
2176 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2177 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2178 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2179 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2180 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2181 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2182 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2183 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2184 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2185 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2186 #endif // INCLUDE_NMT
2187 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2188 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2189 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2190 (void*)&WB_DeoptimizeMethod },
2191 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2192 (void*)&WB_IsMethodCompiled },
2193 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2194 (void*)&WB_IsMethodCompilable},
2195 {CC"isMethodQueuedForCompilation0",
2196 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2197 {CC"isIntrinsicAvailable0",
2198 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2199 (void*)&WB_IsIntrinsicAvailable},
2200 {CC"makeMethodNotCompilable0",
2201 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2202 {CC"testSetDontInlineMethod0",
2203 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2204 {CC"getMethodCompilationLevel0",
2205 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2206 {CC"getMethodEntryBci0",
2207 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2208 {CC"getCompileQueueSize",
2209 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2210 {CC"testSetForceInlineMethod0",
2211 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2212 {CC"enqueueMethodForCompilation0",
2213 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2214 {CC"enqueueInitializerForCompilation0",
2215 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2216 {CC"clearMethodState0",
2217 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2218 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2219 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2220 {CC"matchesMethod",
2221 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2222 (void*)&WB_MatchesMethod},
2223 {CC"matchesInline",
2224 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2225 (void*)&WB_MatchesInline},
2226 {CC"shouldPrintAssembly",
2227 CC"(Ljava/lang/reflect/Executable;I)Z",
2228 (void*)&WB_ShouldPrintAssembly},
2229
2230 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2231 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2232 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2233 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2234 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2235 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2236 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2237 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2238 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2239 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2240 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2241 (void*)&WB_SetStringVMFlag},
2242 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2243 (void*)&WB_GetBooleanVMFlag},
2244 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2245 (void*)&WB_GetIntVMFlag},
2246 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2247 (void*)&WB_GetUintVMFlag},
2248 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2249 (void*)&WB_GetIntxVMFlag},
2250 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2251 (void*)&WB_GetUintxVMFlag},
2252 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2253 (void*)&WB_GetUint64VMFlag},
2254 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2255 (void*)&WB_GetSizeTVMFlag},
2256 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2257 (void*)&WB_GetDoubleVMFlag},
2258 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2259 (void*)&WB_GetStringVMFlag},
2260 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2261 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2262 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2263 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2264 {CC"allocateMetaspace",
2265 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2266 {CC"freeMetaspace",
2267 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2268 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2269 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2270 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2271 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2272 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2273 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2274 (void*)&WB_GetNMethod },
2275 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2276 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2277 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2278 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2279 {CC"getCompilationActivityMode",
2280 CC"()I", (void*)&WB_GetCompilationActivityMode},
2281 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2282 (void*)&WB_GetMethodData },
2283 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2284 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2285 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2286 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2287 (void*)&WB_DefineModule },
2288 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2289 (void*)&WB_AddModuleExports },
2290 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2291 (void*)&WB_AddReadsModule },
2292 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2293 (void*)&WB_AddModuleExportsToAllUnnamed },
2294 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2295 (void*)&WB_AddModuleExportsToAll },
2296 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2297 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2298 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2299 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2300 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2301 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2302 {CC"remapInstructionOperandFromCPCache0",
2303 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2304 {CC"encodeConstantPoolIndyIndex0",
2305 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2306 {CC"getMethodBooleanOption",
2307 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2308 (void*)&WB_GetMethodBooleaneOption},
2309 {CC"getMethodIntxOption",
2310 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2311 (void*)&WB_GetMethodIntxOption},
2312 {CC"getMethodUintxOption",
2313 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2314 (void*)&WB_GetMethodUintxOption},
2315 {CC"getMethodDoubleOption",
2316 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2317 (void*)&WB_GetMethodDoubleOption},
2318 {CC"getMethodStringOption",
2319 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2320 (void*)&WB_GetMethodStringOption},
2321 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2322 (void*)&WB_GetDefaultArchivePath},
2323 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2324 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2325 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2326 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2327 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2328 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2329 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2330 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2331 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2332
2333 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2334 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2335 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2336 (void*)&WB_AddCompilerDirective },
2337 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2338 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2339 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2340 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2341 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2342 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2343 (void*)&WB_GetConcurrentGCPhases},
2344 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2345 (void*)&WB_RequestConcurrentGCPhase},
2346 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2347 (void*)&WB_CheckLibSpecifiesNoexecstack},
2348 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2349 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2350 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2351 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount },
2352 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2353 };
2354
2355
2356 #undef CC
2357
2358 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2359 {
2360 if (WhiteBoxAPI) {
2361 // Make sure that wbclass is loaded by the null classloader
2362 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2363 Handle loader(THREAD, ik->class_loader());
2364 if (loader.is_null()) {
2365 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2366 WhiteBox::set_used();
2367 }
2368 }
2369 }
2370 JVM_END