1 /*
2 * Copyright (c) 2012, 2021, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include <new>
27 #include "cds/cdsConstants.hpp"
28 #include "cds/filemap.hpp"
29 #include "cds/heapShared.inline.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/classLoaderDataGraph.hpp"
32 #include "classfile/javaClasses.inline.hpp"
33 #include "classfile/modules.hpp"
34 #include "classfile/protectionDomainCache.hpp"
35 #include "classfile/stringTable.hpp"
36 #include "classfile/symbolTable.hpp"
37 #include "classfile/systemDictionary.hpp"
38 #include "classfile/vmSymbols.hpp"
39 #include "code/codeCache.hpp"
40 #include "compiler/compilationPolicy.hpp"
41 #include "compiler/directivesParser.hpp"
42 #include "compiler/methodMatcher.hpp"
43 #include "gc/shared/concurrentGCBreakpoints.hpp"
44 #include "gc/shared/gcConfig.hpp"
45 #include "gc/shared/gcLocker.inline.hpp"
46 #include "gc/shared/genArguments.hpp"
47 #include "gc/shared/genCollectedHeap.hpp"
48 #include "jvmtifiles/jvmtiEnv.hpp"
49 #include "logging/log.hpp"
50 #include "memory/iterator.hpp"
51 #include "memory/metadataFactory.hpp"
52 #include "memory/iterator.inline.hpp"
53 #include "memory/metaspace/testHelpers.hpp"
54 #include "memory/metaspaceUtils.hpp"
55 #include "memory/oopFactory.hpp"
56 #include "memory/resourceArea.hpp"
57 #include "memory/universe.hpp"
58 #include "oops/array.hpp"
59 #include "oops/compressedOops.hpp"
60 #include "oops/compressedOops.inline.hpp"
61 #include "oops/constantPool.inline.hpp"
62 #include "oops/klass.inline.hpp"
63 #include "oops/method.inline.hpp"
64 #include "oops/objArrayKlass.hpp"
65 #include "oops/objArrayOop.inline.hpp"
66 #include "oops/oop.inline.hpp"
67 #include "oops/objArrayOop.inline.hpp"
68 #include "oops/typeArrayOop.inline.hpp"
69 #include "prims/resolvedMethodTable.hpp"
70 #include "prims/wbtestmethods/parserTests.hpp"
71 #include "prims/whitebox.inline.hpp"
72 #include "runtime/arguments.hpp"
73 #include "runtime/atomic.hpp"
74 #include "runtime/deoptimization.hpp"
75 #include "runtime/fieldDescriptor.inline.hpp"
76 #include "runtime/flags/jvmFlag.hpp"
77 #include "runtime/flags/jvmFlagAccess.hpp"
78 #include "runtime/frame.inline.hpp"
79 #include "runtime/handles.inline.hpp"
80 #include "runtime/handshake.hpp"
81 #include "runtime/interfaceSupport.inline.hpp"
82 #include "runtime/javaCalls.hpp"
83 #include "runtime/jniHandles.inline.hpp"
84 #include "runtime/os.hpp"
85 #include "runtime/stackFrameStream.inline.hpp"
86 #include "runtime/sweeper.hpp"
87 #include "runtime/synchronizer.hpp"
88 #include "runtime/thread.hpp"
89 #include "runtime/threadSMR.hpp"
90 #include "runtime/vframe.hpp"
91 #include "runtime/vm_version.hpp"
92 #include "services/memoryService.hpp"
93 #include "utilities/align.hpp"
94 #include "utilities/debug.hpp"
95 #include "utilities/elfFile.hpp"
96 #include "utilities/exceptions.hpp"
97 #include "utilities/macros.hpp"
98 #include "utilities/ostream.hpp"
99 #if INCLUDE_G1GC
100 #include "gc/g1/g1Arguments.hpp"
101 #include "gc/g1/g1CollectedHeap.inline.hpp"
102 #include "gc/g1/g1ConcurrentMark.hpp"
103 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
104 #include "gc/g1/heapRegionManager.hpp"
105 #include "gc/g1/heapRegionRemSet.inline.hpp"
106 #endif // INCLUDE_G1GC
107 #if INCLUDE_PARALLELGC
108 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
109 #endif // INCLUDE_PARALLELGC
110 #if INCLUDE_NMT
111 #include "services/mallocSiteTable.hpp"
112 #include "services/memTracker.hpp"
113 #include "utilities/nativeCallStack.hpp"
114 #endif // INCLUDE_NMT
115 #if INCLUDE_JVMCI
116 #include "jvmci/jvmciEnv.hpp"
117 #include "jvmci/jvmciRuntime.hpp"
118 #endif
119
120 #ifdef LINUX
121 #include "osContainer_linux.hpp"
122 #include "cgroupSubsystem_linux.hpp"
123 #endif
124
125 #define SIZE_T_MAX_VALUE ((size_t) -1)
126
127 #define CHECK_JNI_EXCEPTION_(env, value) \
128 do { \
129 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
130 THREAD->clear_pending_jni_exception_check(); \
131 if (HAS_PENDING_EXCEPTION) { \
132 return(value); \
133 } \
134 } while (0)
135
136 #define CHECK_JNI_EXCEPTION(env) \
137 do { \
138 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
139 THREAD->clear_pending_jni_exception_check(); \
140 if (HAS_PENDING_EXCEPTION) { \
141 return; \
142 } \
143 } while (0)
144
145 bool WhiteBox::_used = false;
146 volatile bool WhiteBox::compilation_locked = false;
147
148 class VM_WhiteBoxOperation : public VM_Operation {
149 public:
150 VM_WhiteBoxOperation() { }
151 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
152 bool allow_nested_vm_operations() const { return true; }
153 };
154
155
156 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
157 return (jlong)(void*)JNIHandles::resolve(obj);
158 WB_END
159
160 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
161 return heapOopSize;
162 WB_END
163
164 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
165 return os::vm_page_size();
166 WB_END
167
168 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
169 return os::vm_allocation_granularity();
170 WB_END
171
172 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
173 return os::large_page_size();
174 WB_END
175
176 class WBIsKlassAliveClosure : public LockedClassesDo {
177 Symbol* _name;
178 int _count;
179 public:
180 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
181
182 void do_klass(Klass* k) {
183 Symbol* ksym = k->name();
184 if (ksym->fast_compare(_name) == 0) {
185 _count++;
186 } else if (k->is_instance_klass()) {
187 // Need special handling for hidden classes because the JVM
188 // appends "+<hex-address>" to hidden class names.
189 InstanceKlass *ik = InstanceKlass::cast(k);
190 if (ik->is_hidden()) {
191 ResourceMark rm;
192 char* k_name = ksym->as_C_string();
193 // Find the first '+' char and truncate the string at that point.
194 // NOTE: This will not work correctly if the original hidden class
195 // name contains a '+'.
196 char* plus_char = strchr(k_name, '+');
197 if (plus_char != NULL) {
198 *plus_char = 0;
199 char* c_name = _name->as_C_string();
200 if (strcmp(c_name, k_name) == 0) {
201 _count++;
202 }
203 }
204 }
205 }
206 }
207
208 int count() const {
209 return _count;
210 }
211 };
212
213 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
214 oop h_name = JNIHandles::resolve(name);
215 if (h_name == NULL) return false;
216 Symbol* sym = java_lang_String::as_symbol(h_name);
217 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
218
219 WBIsKlassAliveClosure closure(sym);
220 ClassLoaderDataGraph::classes_do(&closure);
221
222 // Return the count of alive classes with this name.
223 return closure.count();
224 WB_END
225
226 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
227 oop h_name = JNIHandles::resolve(name);
228 if (h_name == NULL) return false;
229 Symbol* sym = java_lang_String::as_symbol(h_name);
230 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
231 return (jint)sym->refcount();
232 WB_END
233
234
235 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
236 #if INCLUDE_JVMTI
237 ResourceMark rm;
238 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
239 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
240 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
241 assert(err == JVMTI_ERROR_NONE, "must not fail");
242 #endif
243 }
244 WB_END
245
246 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
247 #if INCLUDE_JVMTI
248 ResourceMark rm;
249 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
250 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
251 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
252 assert(err == JVMTI_ERROR_NONE, "must not fail");
253 #endif
254 }
255 WB_END
256
257
258 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
259 return (jlong)Arguments::max_heap_for_compressed_oops();
260 }
261 WB_END
262
263 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
264 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
265 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
266 MinHeapSize,
267 InitialHeapSize,
268 MaxHeapSize,
269 SpaceAlignment,
270 HeapAlignment);
271 }
272 WB_END
273
274 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
275 size_t granularity = os::vm_allocation_granularity();
276 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
277 VirtualSpace vs;
278 vs.initialize(rhs, 50 * granularity);
279
280 // Check if constraints are complied
281 if (!( UseCompressedOops && rhs.base() != NULL &&
282 CompressedOops::base() != NULL &&
283 CompressedOops::use_implicit_null_checks() )) {
284 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
285 "\tUseCompressedOops is %d\n"
286 "\trhs.base() is " PTR_FORMAT "\n"
287 "\tCompressedOops::base() is " PTR_FORMAT "\n"
288 "\tCompressedOops::use_implicit_null_checks() is %d",
289 UseCompressedOops,
290 p2i(rhs.base()),
291 p2i(CompressedOops::base()),
292 CompressedOops::use_implicit_null_checks());
293 return;
294 }
295 tty->print_cr("Reading from no access area... ");
296 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
297 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
298 WB_END
299
300 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
301 size_t magnitude, size_t iterations) {
302 size_t granularity = os::vm_allocation_granularity();
303 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
304 VirtualSpace vs;
305 if (!vs.initialize(rhs, 0)) {
306 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
307 return 3;
308 }
309
310 int seed = os::random();
311 tty->print_cr("Random seed is %d", seed);
312
313 for (size_t i = 0; i < iterations; i++) {
314
315 // Whether we will shrink or grow
316 bool shrink = os::random() % 2L == 0;
317
318 // Get random delta to resize virtual space
319 size_t delta = (size_t)os::random() % magnitude;
320
321 // If we are about to shrink virtual space below zero, then expand instead
322 if (shrink && vs.committed_size() < delta) {
323 shrink = false;
324 }
325
326 // Resizing by delta
327 if (shrink) {
328 vs.shrink_by(delta);
329 } else {
330 // If expanding fails expand_by will silently return false
331 vs.expand_by(delta, true);
332 }
333 }
334 return 0;
335 }
336
337 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
338 jlong reserved_space_size, jlong magnitude, jlong iterations))
339 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
340 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
341 iterations);
342 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
343 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
344 return 1;
345 }
346
347 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
348 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
349 if (sizeof(size_t) < sizeof(jlong)) {
350 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
351 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
352 || iterations > size_t_max_value) {
353 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
354 return 2;
355 }
356 }
357
358 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
359 (size_t) magnitude, (size_t) iterations);
360 WB_END
361
362 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
363 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
364 WB_END
365
366 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
367 #if INCLUDE_JVMCI
368 if (EnableJVMCI) {
369 JVMCIEnv jvmciEnv(thread, env, __FILE__, __LINE__);
370 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
371 }
372 #endif
373 return false;
374 WB_END
375
376 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
377 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
378 WB_END
379
380 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
381 return GCConfig::is_gc_selected_ergonomically();
382 WB_END
383
384 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
385 oop p = JNIHandles::resolve(obj);
386 #if INCLUDE_G1GC
387 if (UseG1GC) {
388 G1CollectedHeap* g1h = G1CollectedHeap::heap();
389 const HeapRegion* hr = g1h->heap_region_containing(p);
390 if (hr == NULL) {
391 return false;
392 }
393 return !(hr->is_young());
394 }
395 #endif
396 #if INCLUDE_PARALLELGC
397 if (UseParallelGC) {
398 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
399 return !psh->is_in_young(p);
400 }
401 #endif
402 #if INCLUDE_ZGC
403 if (UseZGC) {
404 return Universe::heap()->is_in(p);
405 }
406 #endif
407 #if INCLUDE_SHENANDOAHGC
408 if (UseShenandoahGC) {
409 return Universe::heap()->is_in(p);
410 }
411 #endif
412 GenCollectedHeap* gch = GenCollectedHeap::heap();
413 return !gch->is_in_young(p);
414 WB_END
415
416 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
417 oop p = JNIHandles::resolve(obj);
418 return p->size() * HeapWordSize;
419 WB_END
420
421 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
422 return (jlong)SpaceAlignment;
423 WB_END
424
425 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
426 return (jlong)HeapAlignment;
427 WB_END
428
429 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
430 return Universe::heap()->supports_concurrent_gc_breakpoints();
431 WB_END
432
433 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
434 ConcurrentGCBreakpoints::acquire_control();
435 WB_END
436
437 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
438 ConcurrentGCBreakpoints::release_control();
439 WB_END
440
441 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
442 ConcurrentGCBreakpoints::run_to_idle();
443 WB_END
444
445 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
446 Handle h_name(THREAD, JNIHandles::resolve(at));
447 ResourceMark rm;
448 const char* c_name = java_lang_String::as_utf8_string(h_name());
449 return ConcurrentGCBreakpoints::run_to(c_name);
450 WB_END
451
452 #if INCLUDE_G1GC
453
454 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
455 if (UseG1GC) {
456 G1CollectedHeap* g1h = G1CollectedHeap::heap();
457 oop result = JNIHandles::resolve(obj);
458 const HeapRegion* hr = g1h->heap_region_containing(result);
459 return hr->is_humongous();
460 }
461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
462 WB_END
463
464 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
465 if (UseG1GC) {
466 G1CollectedHeap* g1h = G1CollectedHeap::heap();
467 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
468 return hr->is_humongous();
469 }
470 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
471 WB_END
472
473 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
474 if (UseG1GC) {
475 G1CollectedHeap* g1h = G1CollectedHeap::heap();
476 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
477 return hr->is_free();
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
483 if (UseG1GC) {
484 G1CollectedHeap* g1h = G1CollectedHeap::heap();
485 size_t nr = g1h->max_regions();
486 return (jlong)nr;
487 }
488 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
489 WB_END
490
491 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
492 if (UseG1GC) {
493 G1CollectedHeap* g1h = G1CollectedHeap::heap();
494 size_t nr = g1h->num_free_regions();
495 return (jlong)nr;
496 }
497 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
498 WB_END
499
500 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
501 if (UseG1GC) {
502 G1CollectedHeap* g1h = G1CollectedHeap::heap();
503 return g1h->concurrent_mark()->cm_thread()->in_progress();
504 }
505 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
506 WB_END
507
508 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
509 if (UseG1GC) {
510 G1CollectedHeap* g1h = G1CollectedHeap::heap();
511 if (!g1h->concurrent_mark()->cm_thread()->in_progress()) {
512 g1h->collect(GCCause::_wb_conc_mark);
513 return true;
514 }
515 return false;
516 }
517 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
518 WB_END
519
520 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
521 if (UseG1GC) {
522 return (jint)HeapRegion::GrainBytes;
523 }
524 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
525 WB_END
526
527 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
528 if (UseG1GC) {
529 return G1CollectedHeap::heap()->has_uncommittable_regions();
530 }
531 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
532 WB_END
533
534 #endif // INCLUDE_G1GC
535
536 #if INCLUDE_PARALLELGC
537
538 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
539 if (UseParallelGC) {
540 return GenAlignment;
541 }
542 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
543 WB_END
544
545 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
546 if (UseParallelGC) {
547 return GenAlignment;
548 }
549 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
550 WB_END
551
552 #endif // INCLUDE_PARALLELGC
553
554 #if INCLUDE_G1GC
555
556 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
557 if (UseG1GC) {
558 ResourceMark rm(THREAD);
559 G1CollectedHeap* g1h = G1CollectedHeap::heap();
560 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
561 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
562 return JNIHandles::make_local(THREAD, h());
563 }
564 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
565 WB_END
566
567 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
568 if (UseG1GC) {
569 G1NUMA* numa = G1NUMA::numa();
570 return (jint)numa->num_active_nodes();
571 }
572 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
573 WB_END
574
575 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
576 if (UseG1GC) {
577 G1NUMA* numa = G1NUMA::numa();
578 int num_node_ids = (int)numa->num_active_nodes();
579 const int* node_ids = numa->node_ids();
580
581 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
582 for (int i = 0; i < num_node_ids; i++) {
583 result->int_at_put(i, (jint)node_ids[i]);
584 }
585 return (jintArray) JNIHandles::make_local(THREAD, result);
586 }
587 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
588 WB_END
589
590 class OldRegionsLivenessClosure: public HeapRegionClosure {
591
592 private:
593 const int _liveness;
594 size_t _total_count;
595 size_t _total_memory;
596 size_t _total_memory_to_free;
597
598 public:
599 OldRegionsLivenessClosure(int liveness) :
600 _liveness(liveness),
601 _total_count(0),
602 _total_memory(0),
603 _total_memory_to_free(0) { }
604
605 size_t total_count() { return _total_count; }
606 size_t total_memory() { return _total_memory; }
607 size_t total_memory_to_free() { return _total_memory_to_free; }
608
609 bool do_heap_region(HeapRegion* r) {
610 if (r->is_old()) {
611 size_t prev_live = r->marked_bytes();
612 size_t live = r->live_bytes();
613 size_t size = r->used();
614 size_t reg_size = HeapRegion::GrainBytes;
615 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
616 _total_memory += size;
617 ++_total_count;
618 if (size == reg_size) {
619 // we don't include non-full regions since they are unlikely included in mixed gc
620 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
621 _total_memory_to_free += size - prev_live;
622 }
623 }
624 }
625 return false;
626 }
627 };
628
629
630 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
631 if (!UseG1GC) {
632 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
633 }
634 if (liveness < 0) {
635 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
636 }
637
638 G1CollectedHeap* g1h = G1CollectedHeap::heap();
639 OldRegionsLivenessClosure rli(liveness);
640 g1h->heap_region_iterate(&rli);
641
642 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
643 result->long_at_put(0, rli.total_count());
644 result->long_at_put(1, rli.total_memory());
645 result->long_at_put(2, rli.total_memory_to_free());
646 return (jlongArray) JNIHandles::make_local(THREAD, result);
647 WB_END
648
649 #endif // INCLUDE_G1GC
650
651 #if INCLUDE_NMT
652 // Alloc memory using the test memory type so that we can use that to see if
653 // NMT picks it up correctly
654 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
655 jlong addr = 0;
656 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
657 return addr;
658 WB_END
659
660 // Alloc memory with pseudo call stack. The test can create psudo malloc
661 // allocation site to stress the malloc tracking.
662 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
663 address pc = (address)(size_t)pseudo_stack;
664 NativeCallStack stack(&pc, 1);
665 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
666 WB_END
667
668 // Alloc memory with pseudo call stack and specific memory type.
669 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
670 address pc = (address)(size_t)pseudo_stack;
671 NativeCallStack stack(&pc, 1);
672 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
673 WB_END
674
675 // Free the memory allocated by NMTAllocTest
676 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
677 os::free((void*)(uintptr_t)mem);
678 WB_END
679
680 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
681 jlong addr = 0;
682
683 addr = (jlong)(uintptr_t)os::reserve_memory(size);
684 MemTracker::record_virtual_memory_type((address)addr, mtTest);
685
686 return addr;
687 WB_END
688
689 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
690 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
691 MemTracker::record_virtual_memory_type((address)addr, mtTest);
692
693 return addr;
694 WB_END
695
696 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
697 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
698 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
699 WB_END
700
701 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
702 os::uncommit_memory((char *)(uintptr_t)addr, size);
703 WB_END
704
705 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
706 os::release_memory((char *)(uintptr_t)addr, size);
707 WB_END
708
709 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
710 // Test that we can downgrade NMT levels but not upgrade them.
711 if (MemTracker::tracking_level() == NMT_off) {
712 MemTracker::transition_to(NMT_off);
713 return MemTracker::tracking_level() == NMT_off;
714 } else {
715 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
716 MemTracker::transition_to(NMT_summary);
717 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
718
719 // Can't go to detail once NMT is set to summary.
720 MemTracker::transition_to(NMT_detail);
721 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
722
723 // Shutdown sets tracking level to minimal.
724 MemTracker::shutdown();
725 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
726
727 // Once the tracking level is minimal, we cannot increase to summary.
728 // The code ignores this request instead of asserting because if the malloc site
729 // table overflows in another thread, it tries to change the code to summary.
730 MemTracker::transition_to(NMT_summary);
731 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
732
733 // Really can never go up to detail, verify that the code would never do this.
734 MemTracker::transition_to(NMT_detail);
735 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
736 return MemTracker::tracking_level() == NMT_minimal;
737 }
738 WB_END
739
740 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
741 int hash_size = MallocSiteTable::hash_buckets();
742 assert(hash_size > 0, "NMT hash_size should be > 0");
743 return (jint)hash_size;
744 WB_END
745
746 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
747 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
748 return (jlong)arena;
749 WB_END
750
751 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
752 Arena* a = (Arena*)arena;
753 delete a;
754 WB_END
755
756 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
757 Arena* a = (Arena*)arena;
758 a->Amalloc(size_t(size));
759 WB_END
760 #endif // INCLUDE_NMT
761
762 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
763 assert(method != NULL, "method should not be null");
764 ThreadToNativeFromVM ttn(thread);
765 return env->FromReflectedMethod(method);
766 }
767
768 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
769 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
770 private:
771 int _result;
772 const bool _make_not_entrant;
773 public:
774 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
775 _result(0), _make_not_entrant(make_not_entrant) { }
776 int result() const { return _result; }
777
778 void doit() {
779 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
780 if (t->has_last_Java_frame()) {
781 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
782 frame* f = fst.current();
783 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
784 Deoptimization::deoptimize(t, *f);
785 if (_make_not_entrant) {
786 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
787 assert(cm != NULL, "sanity check");
788 cm->make_not_entrant();
789 }
790 ++_result;
791 }
792 }
793 }
794 }
795 }
796 };
797
798 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
799 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
800 VMThread::execute(&op);
801 return op.result();
802 WB_END
803
804 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
805 bool result = false;
806 if (thread->has_last_Java_frame()) {
807 RegisterMap reg_map(thread);
808 javaVFrame *jvf = thread->last_java_vframe(®_map);
809 for (jint d = 0; d < depth && jvf != NULL; d++) {
810 jvf = jvf->java_sender();
811 }
812 result = jvf != NULL && jvf->fr().is_deoptimized_frame();
813 }
814 return result;
815 WB_END
816
817 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
818 CodeCache::mark_all_nmethods_for_deoptimization();
819 Deoptimization::deoptimize_all_marked();
820 WB_END
821
822 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
823 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
824 int result = 0;
825 CHECK_JNI_EXCEPTION_(env, result);
826 MutexLocker mu(Compile_lock);
827 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
828 if (is_osr) {
829 result += mh->mark_osr_nmethods();
830 } else if (mh->code() != NULL) {
831 mh->code()->mark_for_deoptimization();
832 ++result;
833 }
834 result += CodeCache::mark_for_deoptimization(mh());
835 if (result > 0) {
836 Deoptimization::deoptimize_all_marked();
837 }
838 return result;
839 WB_END
840
841 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
842 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
843 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
844 MutexLocker mu(Compile_lock);
845 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
846 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
847 if (code == NULL) {
848 return JNI_FALSE;
849 }
850 return (code->is_alive() && !code->is_marked_for_deoptimization());
851 WB_END
852
853 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
854 if (comp == NULL) {
855 return true;
856 }
857 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
858 if (directive->ExcludeOption) {
859 return true;
860 }
861 return false;
862 }
863
864 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
865 if (is_osr) {
866 return CompilationPolicy::can_be_osr_compiled(mh, level);
867 } else {
868 return CompilationPolicy::can_be_compiled(mh, level);
869 }
870 }
871
872 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
873 if (method == NULL || comp_level > CompilationPolicy::highest_compile_level()) {
874 return false;
875 }
876 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
877 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
878 MutexLocker mu(Compile_lock);
879 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
880
881 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
882 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
883 // to exclude a compilation of 'method'.
884 if (comp_level == CompLevel_any) {
885 // Both compilers could have ExcludeOption set. Check all combinations.
886 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
887 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
888 if (excluded_c1 && excluded_c2) {
889 // Compilation of 'method' excluded by both compilers.
890 return false;
891 }
892
893 if (excluded_c1) {
894 // C1 only has ExcludeOption set: Check if compilable with C2.
895 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
896 } else if (excluded_c2) {
897 // C2 only has ExcludeOption set: Check if compilable with C1.
898 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
899 }
900 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
901 // Compilation of 'method' excluded by compiler used for 'comp_level'.
902 return false;
903 }
904
905 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
906 WB_END
907
908 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
909 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
910 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
911 MutexLocker mu(Compile_lock);
912 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
913 return mh->queued_for_compilation();
914 WB_END
915
916 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
917 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
918 return false; // Intrinsic is not available on a non-existent compilation level.
919 }
920 jmethodID method_id, compilation_context_id;
921 method_id = reflected_method_to_jmid(thread, env, method);
922 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
923 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
924
925 DirectiveSet* directive;
926 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
927 assert(comp != NULL, "compiler not available");
928 if (compilation_context != NULL) {
929 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
930 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
931 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
932 directive = DirectivesStack::getMatchingDirective(cch, comp);
933 } else {
934 // Calling with NULL matches default directive
935 directive = DirectivesStack::getDefaultDirective(comp);
936 }
937 bool result = comp->is_intrinsic_available(mh, directive);
938 DirectivesStack::release(directive);
939 return result;
940 WB_END
941
942 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
943 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
944 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
945 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
946 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
947 return (code != NULL ? code->comp_level() : CompLevel_none);
948 WB_END
949
950 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
951 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
952 CHECK_JNI_EXCEPTION(env);
953 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
954 if (is_osr) {
955 mh->set_not_osr_compilable("WhiteBox", comp_level);
956 } else {
957 mh->set_not_compilable("WhiteBox", comp_level);
958 }
959 WB_END
960
961 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
962 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
963 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
964 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
965 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
966 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
967 WB_END
968
969 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
970 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
971 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
972 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
973 bool result = mh->dont_inline();
974 mh->set_dont_inline(value == JNI_TRUE);
975 return result;
976 WB_END
977
978 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
979 if (comp_level == CompLevel_any) {
980 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
981 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
982 } else {
983 return CompileBroker::queue_size(comp_level);
984 }
985 WB_END
986
987 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
988 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
989 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
990 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
991 bool result = mh->force_inline();
992 mh->set_force_inline(value == JNI_TRUE);
993 return result;
994 WB_END
995
996 #ifdef LINUX
997 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
998 const char* proc_self_cgroup,
999 const char* proc_self_mountinfo,
1000 u1* cg_flags) {
1001 CgroupInfo cg_infos[CG_INFO_LENGTH];
1002 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1003 proc_self_cgroup,
1004 proc_self_mountinfo, cg_flags);
1005 }
1006 #endif
1007
1008 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1009 // Screen for unavailable/bad comp level or null method
1010 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1011 if (method == NULL) {
1012 tty->print_cr("WB error: request to compile NULL method");
1013 return false;
1014 }
1015 if (comp_level > CompilationPolicy::highest_compile_level()) {
1016 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1017 return false;
1018 }
1019 if (comp == NULL) {
1020 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1021 return false;
1022 }
1023
1024 // Check if compilation is blocking
1025 methodHandle mh(THREAD, method);
1026 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1027 bool is_blocking = !directive->BackgroundCompilationOption;
1028 DirectivesStack::release(directive);
1029
1030 // Compile method and check result
1031 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
1032 MutexLocker mu(THREAD, Compile_lock);
1033 bool is_queued = mh->queued_for_compilation();
1034 if ((!is_blocking && is_queued) || nm != NULL) {
1035 return true;
1036 }
1037 // Check code again because compilation may be finished before Compile_lock is acquired.
1038 if (bci == InvocationEntryBci) {
1039 CompiledMethod* code = mh->code();
1040 if (code != NULL && code->as_nmethod_or_null() != NULL) {
1041 return true;
1042 }
1043 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != NULL) {
1044 return true;
1045 }
1046 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1047 mh->print_short_name(tty);
1048 tty->cr();
1049 if (is_blocking && is_queued) {
1050 tty->print_cr("WB error: blocking compilation is still in queue!");
1051 }
1052 return false;
1053 }
1054
1055 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1056 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1057 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1058 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1059 WB_END
1060
1061 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1062 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1063 Method* clinit = ik->class_initializer();
1064 if (clinit == NULL || clinit->method_holder()->is_not_initialized()) {
1065 return false;
1066 }
1067 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1068 WB_END
1069
1070 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1071 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1072 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1073
1074 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1075 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1076 bool result = directive->PrintAssemblyOption;
1077 DirectivesStack::release(directive);
1078
1079 return result;
1080 WB_END
1081
1082 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1083 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1084 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1085
1086 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1087
1088 ResourceMark rm(THREAD);
1089 const char* error_msg = NULL;
1090 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1091 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1092
1093 if (m == NULL) {
1094 assert(error_msg != NULL, "Always have an error message");
1095 tty->print_cr("Got error: %s", error_msg);
1096 return -1; // Pattern failed
1097 }
1098
1099 // Pattern works - now check if it matches
1100 int result;
1101 if (m->match(mh, InlineMatcher::force_inline)) {
1102 result = 2; // Force inline match
1103 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1104 result = 1; // Dont inline match
1105 } else {
1106 result = 0; // No match
1107 }
1108 delete m;
1109 return result;
1110 WB_END
1111
1112 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1113 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1114 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1115
1116 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1117
1118 ResourceMark rm;
1119 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1120
1121 const char* error_msg = NULL;
1122
1123 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1124 if (m == NULL) {
1125 assert(error_msg != NULL, "Must have error_msg");
1126 tty->print_cr("Got error: %s", error_msg);
1127 return -1;
1128 }
1129
1130 // Pattern works - now check if it matches
1131 int result = m->matches(mh);
1132 delete m;
1133 assert(result == 0 || result == 1, "Result out of range");
1134 return result;
1135 WB_END
1136
1137 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1138 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1139 CHECK_JNI_EXCEPTION(env);
1140 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1141
1142 MethodData* mdo = mh->method_data();
1143 if (mdo == NULL) {
1144 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1145 mdo = mh->method_data();
1146 }
1147 mdo->init();
1148 InvocationCounter* icnt = mdo->invocation_counter();
1149 InvocationCounter* bcnt = mdo->backedge_counter();
1150 // set i-counter according to CompilationPolicy::is_method_profiled
1151 icnt->set(Tier4MinInvocationThreshold);
1152 bcnt->set(Tier4CompileThreshold);
1153 WB_END
1154
1155 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1156 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1157 CHECK_JNI_EXCEPTION(env);
1158 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1159 MutexLocker mu(THREAD, Compile_lock);
1160 MethodData* mdo = mh->method_data();
1161 MethodCounters* mcs = mh->method_counters();
1162
1163 if (mdo != NULL) {
1164 mdo->init();
1165 ResourceMark rm(THREAD);
1166 int arg_count = mdo->method()->size_of_parameters();
1167 for (int i = 0; i < arg_count; i++) {
1168 mdo->set_arg_modified(i, 0);
1169 }
1170 MutexLocker mu(THREAD, mdo->extra_data_lock());
1171 mdo->clean_method_data(/*always_clean*/true);
1172 }
1173
1174 mh->clear_not_c1_compilable();
1175 mh->clear_not_c2_compilable();
1176 mh->clear_not_c2_osr_compilable();
1177 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1178 if (mcs != NULL) {
1179 mcs->clear_counters();
1180 }
1181 WB_END
1182
1183 template <typename T, int type_enum>
1184 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1185 if (name == NULL) {
1186 return false;
1187 }
1188 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1189 const char* flag_name = env->GetStringUTFChars(name, NULL);
1190 CHECK_JNI_EXCEPTION_(env, false);
1191 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1192 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1193 env->ReleaseStringUTFChars(name, flag_name);
1194 return (result == JVMFlag::SUCCESS);
1195 }
1196
1197 template <typename T, int type_enum>
1198 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1199 if (name == NULL) {
1200 return false;
1201 }
1202 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1203 const char* flag_name = env->GetStringUTFChars(name, NULL);
1204 CHECK_JNI_EXCEPTION_(env, false);
1205 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1206 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1207 env->ReleaseStringUTFChars(name, flag_name);
1208 return (result == JVMFlag::SUCCESS);
1209 }
1210
1211 template <typename T>
1212 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1213 ResourceMark rm(thread);
1214 jclass clazz = env->FindClass(name->as_C_string());
1215 CHECK_JNI_EXCEPTION_(env, NULL);
1216 jmethodID methodID = env->GetStaticMethodID(clazz,
1217 vmSymbols::valueOf_name()->as_C_string(),
1218 sig->as_C_string());
1219 CHECK_JNI_EXCEPTION_(env, NULL);
1220 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1221 CHECK_JNI_EXCEPTION_(env, NULL);
1222 return result;
1223 }
1224
1225 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1226 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1227 }
1228 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1229 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1230 }
1231 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1232 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1233 }
1234 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1235 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1236 }*/
1237 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1238 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1239 }
1240
1241 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1242 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1243 const char* flag_name = env->GetStringUTFChars(name, NULL);
1244 CHECK_JNI_EXCEPTION_(env, NULL);
1245 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1246 env->ReleaseStringUTFChars(name, flag_name);
1247 return result;
1248 }
1249
1250 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1251 const JVMFlag* flag = getVMFlag(thread, env, name);
1252 return (flag != NULL) && flag->is_constant_in_binary();
1253 WB_END
1254
1255 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1256 const JVMFlag* flag = getVMFlag(thread, env, name);
1257 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1258 WB_END
1259
1260 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1261 bool result;
1262 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1263 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1264 return booleanBox(thread, env, result);
1265 }
1266 return NULL;
1267 WB_END
1268
1269 template <typename T, int type_enum>
1270 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1271 T result;
1272 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1273 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1274 return longBox(thread, env, result);
1275 }
1276 return NULL;
1277 }
1278
1279 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1280 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1281 WB_END
1282
1283 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1284 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1285 WB_END
1286
1287 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1288 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1289 WB_END
1290
1291 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1292 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1293 WB_END
1294
1295 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1296 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1297 WB_END
1298
1299 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1300 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1301 WB_END
1302
1303 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1304 double result;
1305 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1306 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1307 return doubleBox(thread, env, result);
1308 }
1309 return NULL;
1310 WB_END
1311
1312 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1313 ccstr ccstrResult;
1314 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1315 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1316 jstring result = env->NewStringUTF(ccstrResult);
1317 CHECK_JNI_EXCEPTION_(env, NULL);
1318 return result;
1319 }
1320 return NULL;
1321 WB_END
1322
1323 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1324 bool result = value == JNI_TRUE ? true : false;
1325 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1326 WB_END
1327
1328 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1329 int result = value;
1330 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1331 WB_END
1332
1333 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1334 uint result = value;
1335 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1336 WB_END
1337
1338 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1339 intx result = value;
1340 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1341 WB_END
1342
1343 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1344 uintx result = value;
1345 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1346 WB_END
1347
1348 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1349 uint64_t result = value;
1350 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1351 WB_END
1352
1353 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1354 size_t result = value;
1355 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1356 WB_END
1357
1358 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1359 double result = value;
1360 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1361 WB_END
1362
1363 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1364 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1365 const char* ccstrValue;
1366 if (value == NULL) {
1367 ccstrValue = NULL;
1368 }
1369 else {
1370 ccstrValue = env->GetStringUTFChars(value, NULL);
1371 CHECK_JNI_EXCEPTION(env);
1372 }
1373 {
1374 ccstr param = ccstrValue;
1375 ThreadInVMfromNative ttvfn(thread); // back to VM
1376 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1377 assert(param == NULL, "old value is freed automatically and not returned");
1378 }
1379 }
1380 if (value != NULL) {
1381 env->ReleaseStringUTFChars(value, ccstrValue);
1382 }
1383 WB_END
1384
1385 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1386 WhiteBox::compilation_locked = true;
1387 WB_END
1388
1389 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1390 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1391 WhiteBox::compilation_locked = false;
1392 mo.notify_all();
1393 WB_END
1394
1395 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1396 // Force a code cache sweep and block until it finished
1397 NMethodSweeper::force_sweep();
1398 WB_END
1399
1400 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1401 ResourceMark rm(THREAD);
1402 int len;
1403 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1404 return (StringTable::lookup(name, len) != NULL);
1405 WB_END
1406
1407 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1408 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1409 Universe::heap()->collect(GCCause::_wb_full_gc);
1410 #if INCLUDE_G1GC
1411 if (UseG1GC) {
1412 // Needs to be cleared explicitly for G1
1413 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1414 }
1415 #endif // INCLUDE_G1GC
1416 WB_END
1417
1418 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1419 Universe::heap()->collect(GCCause::_wb_young_gc);
1420 WB_END
1421
1422 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1423 // static+volatile in order to force the read to happen
1424 // (not be eliminated by the compiler)
1425 static char c;
1426 static volatile char* p;
1427
1428 p = os::reserve_memory(os::vm_allocation_granularity());
1429 if (p == NULL) {
1430 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1431 }
1432
1433 c = *p;
1434 WB_END
1435
1436 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1437 const char* features = VM_Version::features_string();
1438 ThreadToNativeFromVM ttn(thread);
1439 jstring features_string = env->NewStringUTF(features);
1440
1441 CHECK_JNI_EXCEPTION_(env, NULL);
1442
1443 return features_string;
1444 WB_END
1445
1446 int WhiteBox::get_blob_type(const CodeBlob* code) {
1447 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1448 return CodeCache::get_code_heap(code)->code_blob_type();
1449 }
1450
1451 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1452 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1453 return CodeCache::get_code_heap(blob_type);
1454 }
1455
1456 struct CodeBlobStub {
1457 CodeBlobStub(const CodeBlob* blob) :
1458 name(os::strdup(blob->name())),
1459 size(blob->size()),
1460 blob_type(WhiteBox::get_blob_type(blob)),
1461 address((jlong) blob) { }
1462 ~CodeBlobStub() { os::free((void*) name); }
1463 const char* const name;
1464 const jint size;
1465 const jint blob_type;
1466 const jlong address;
1467 };
1468
1469 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1470 ResourceMark rm;
1471 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1472 CHECK_JNI_EXCEPTION_(env, NULL);
1473 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1474
1475 jstring name = env->NewStringUTF(cb->name);
1476 CHECK_JNI_EXCEPTION_(env, NULL);
1477 env->SetObjectArrayElement(result, 0, name);
1478
1479 jobject obj = integerBox(thread, env, cb->size);
1480 CHECK_JNI_EXCEPTION_(env, NULL);
1481 env->SetObjectArrayElement(result, 1, obj);
1482
1483 obj = integerBox(thread, env, cb->blob_type);
1484 CHECK_JNI_EXCEPTION_(env, NULL);
1485 env->SetObjectArrayElement(result, 2, obj);
1486
1487 obj = longBox(thread, env, cb->address);
1488 CHECK_JNI_EXCEPTION_(env, NULL);
1489 env->SetObjectArrayElement(result, 3, obj);
1490
1491 return result;
1492 }
1493
1494 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1495 ResourceMark rm(THREAD);
1496 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1497 CHECK_JNI_EXCEPTION_(env, NULL);
1498 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1499 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1500 jobjectArray result = NULL;
1501 if (code == NULL) {
1502 return result;
1503 }
1504 int comp_level = code->comp_level();
1505 int insts_size = code->insts_size();
1506
1507 ThreadToNativeFromVM ttn(thread);
1508 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1509 CHECK_JNI_EXCEPTION_(env, NULL);
1510 result = env->NewObjectArray(5, clazz, NULL);
1511 if (result == NULL) {
1512 return result;
1513 }
1514
1515 CodeBlobStub stub(code);
1516 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1517 CHECK_JNI_EXCEPTION_(env, NULL);
1518 env->SetObjectArrayElement(result, 0, codeBlob);
1519
1520 jobject level = integerBox(thread, env, comp_level);
1521 CHECK_JNI_EXCEPTION_(env, NULL);
1522 env->SetObjectArrayElement(result, 1, level);
1523
1524 jbyteArray insts = env->NewByteArray(insts_size);
1525 CHECK_JNI_EXCEPTION_(env, NULL);
1526 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1527 env->SetObjectArrayElement(result, 2, insts);
1528
1529 jobject id = integerBox(thread, env, code->compile_id());
1530 CHECK_JNI_EXCEPTION_(env, NULL);
1531 env->SetObjectArrayElement(result, 3, id);
1532
1533 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1534 CHECK_JNI_EXCEPTION_(env, NULL);
1535 env->SetObjectArrayElement(result, 4, entry_point);
1536
1537 return result;
1538 WB_END
1539
1540 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1541 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1542 BufferBlob* blob;
1543 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1544 if (full_size < size) {
1545 full_size += align_up(size - full_size, oopSize);
1546 }
1547 {
1548 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1549 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1550 if (blob != NULL) {
1551 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1552 }
1553 }
1554 // Track memory usage statistic after releasing CodeCache_lock
1555 MemoryService::track_code_cache_memory_usage();
1556 return blob;
1557 }
1558
1559 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1560 if (size < 0) {
1561 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1562 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1563 }
1564 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1565 WB_END
1566
1567 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1568 if (addr == 0) {
1569 return;
1570 }
1571 BufferBlob::free((BufferBlob*) addr);
1572 WB_END
1573
1574 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1575 ResourceMark rm;
1576 GrowableArray<CodeBlobStub*> blobs;
1577 {
1578 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1579 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1580 if (heap == NULL) {
1581 return NULL;
1582 }
1583 for (CodeBlob* cb = (CodeBlob*) heap->first();
1584 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1585 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1586 new (stub) CodeBlobStub(cb);
1587 blobs.append(stub);
1588 }
1589 }
1590 ThreadToNativeFromVM ttn(thread);
1591 jobjectArray result = NULL;
1592 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1593 CHECK_JNI_EXCEPTION_(env, NULL);
1594 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1595 CHECK_JNI_EXCEPTION_(env, NULL);
1596 if (result == NULL) {
1597 return result;
1598 }
1599 int i = 0;
1600 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1601 it != blobs.end(); ++it) {
1602 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1603 CHECK_JNI_EXCEPTION_(env, NULL);
1604 env->SetObjectArrayElement(result, i, obj);
1605 CHECK_JNI_EXCEPTION_(env, NULL);
1606 ++i;
1607 }
1608 return result;
1609 WB_END
1610
1611 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1612 return CompileBroker::get_compilation_activity_mode();
1613 WB_END
1614
1615 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1616 if (addr == 0) {
1617 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1618 "WB_GetCodeBlob: addr is null");
1619 }
1620 ThreadToNativeFromVM ttn(thread);
1621 CodeBlobStub stub((CodeBlob*) addr);
1622 return codeBlob2objectArray(thread, env, &stub);
1623 WB_END
1624
1625 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1626 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1627 CHECK_JNI_EXCEPTION_(env, 0);
1628 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1629 return (jlong) mh->method_data();
1630 WB_END
1631
1632 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1633 return (jlong) thread->stack_size();
1634 WB_END
1635
1636 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1637 return (jlong) thread->stack_overflow_state()->stack_available(
1638 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1639 WB_END
1640
1641
1642 int WhiteBox::array_bytes_to_length(size_t bytes) {
1643 return Array<u1>::bytes_to_length(bytes);
1644 }
1645
1646 ///////////////
1647 // MetaspaceTestContext and MetaspaceTestArena
1648 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1649 metaspace::MetaspaceTestContext* context =
1650 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1651 return (jlong)p2i(context);
1652 WB_END
1653
1654 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1655 delete (metaspace::MetaspaceTestContext*) context;
1656 WB_END
1657
1658 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1659 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1660 context0->purge_area();
1661 WB_END
1662
1663 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1664 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1665 context0->print_on(tty);
1666 WB_END
1667
1668 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1669 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1670 return context0->committed_words();
1671 WB_END
1672
1673 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1674 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1675 return context0->used_words();
1676 WB_END
1677
1678 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1679 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1680 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1681 return (jlong)p2i(context0->create_arena(type));
1682 WB_END
1683
1684 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1685 delete (metaspace::MetaspaceTestArena*) arena;
1686 WB_END
1687
1688 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1689 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1690 MetaWord* p = arena0->allocate((size_t) word_size);
1691 return (jlong)p2i(p);
1692 WB_END
1693
1694 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1695 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1696 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1697 WB_END
1698
1699 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1700 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1701 WB_END
1702
1703 //////////////
1704
1705 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1706 if (size < 0) {
1707 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1708 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1709 }
1710
1711 oop class_loader_oop = JNIHandles::resolve(class_loader);
1712 ClassLoaderData* cld = class_loader_oop != NULL
1713 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1714 : ClassLoaderData::the_null_class_loader_data();
1715
1716 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1717
1718 return (jlong)(uintptr_t)metadata;
1719 WB_END
1720
1721 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1722 jstring version, jstring location, jobjectArray packages))
1723 Handle h_module (THREAD, JNIHandles::resolve(module));
1724 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1725 WB_END
1726
1727 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1728 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1729 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1730 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1731 WB_END
1732
1733 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1734 Handle h_module (THREAD, JNIHandles::resolve(module));
1735 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1736 WB_END
1737
1738 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1739 Handle h_module (THREAD, JNIHandles::resolve(module));
1740 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1741 WB_END
1742
1743 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1744 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1745 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1746 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1747 WB_END
1748
1749 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1750 if (inc < 0) {
1751 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1752 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1753 }
1754
1755 jlong max_size_t = (jlong) ((size_t) -1);
1756 if (inc > max_size_t) {
1757 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1758 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1759 }
1760
1761 size_t new_cap_until_GC = 0;
1762 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1763 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1764 if (!success) {
1765 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1766 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1767 "due to contention with another thread");
1768 }
1769 return (jlong) new_cap_until_GC;
1770 WB_END
1771
1772 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1773 return (jlong) MetaspaceGC::capacity_until_GC();
1774 WB_END
1775
1776 // The function is only valid when CDS is available.
1777 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1778 #if INCLUDE_CDS
1779 return (jlong)MetaspaceShared::core_region_alignment();
1780 #else
1781 ShouldNotReachHere();
1782 return 0L;
1783 #endif
1784 WB_END
1785
1786 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1787 oop obj_oop = JNIHandles::resolve(obj);
1788 return (jboolean) obj_oop->mark().has_monitor();
1789 WB_END
1790
1791 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1792 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1793 return ObjectSynchronizer::request_deflate_idle_monitors();
1794 WB_END
1795
1796 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1797 VM_ForceSafepoint force_safepoint_op;
1798 VMThread::execute(&force_safepoint_op);
1799 WB_END
1800
1801 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1802 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1803 return (jlong) ik->constants();
1804 WB_END
1805
1806 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1807 return ConstantPool::CPCACHE_INDEX_TAG;
1808 WB_END
1809
1810 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1811 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1812 ConstantPool* cp = ik->constants();
1813 if (cp->cache() == NULL) {
1814 return -1;
1815 }
1816 return cp->cache()->length();
1817 WB_END
1818
1819 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1820 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1821 ConstantPool* cp = ik->constants();
1822 if (cp->cache() == NULL) {
1823 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1824 }
1825 jint cpci = index;
1826 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1827 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1828 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1829 }
1830 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1831 return cpi;
1832 WB_END
1833
1834 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1835 return ConstantPool::encode_invokedynamic_index(index);
1836 WB_END
1837
1838 WB_ENTRY(jobjectArray, WB_getObjectsViaKlassOopMaps(JNIEnv* env, jobject wb, jobject thing))
1839 oop aoop = JNIHandles::resolve(thing);
1840 if (!aoop->is_instance()) {
1841 return NULL;
1842 }
1843 instanceHandle ih(THREAD, (instanceOop) aoop);
1844 InstanceKlass* klass = InstanceKlass::cast(ih->klass());
1845 if (klass->nonstatic_oop_map_count() == 0) {
1846 return NULL;
1847 }
1848 const OopMapBlock* map = klass->start_of_nonstatic_oop_maps();
1849 const OopMapBlock* const end = map + klass->nonstatic_oop_map_count();
1850 int oop_count = 0;
1851 while (map < end) {
1852 oop_count += map->count();
1853 map++;
1854 }
1855
1856 objArrayHandle result_array =
1857 oopFactory::new_objArray_handle(vmClasses::Object_klass(), oop_count, CHECK_NULL);
1858 map = klass->start_of_nonstatic_oop_maps();
1859 int index = 0;
1860 while (map < end) {
1861 int offset = map->offset();
1862 for (unsigned int j = 0; j < map->count(); j++) {
1863 result_array->obj_at_put(index++, ih->obj_field(offset));
1864 offset += heapOopSize;
1865 }
1866 map++;
1867 }
1868 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1869 WB_END
1870
1871 class CollectOops : public BasicOopIterateClosure {
1872 public:
1873 GrowableArray<Handle>* array;
1874
1875 jobjectArray create_jni_result(JNIEnv* env, TRAPS) {
1876 objArrayHandle result_array =
1877 oopFactory::new_objArray_handle(vmClasses::Object_klass(), array->length(), CHECK_NULL);
1878 for (int i = 0 ; i < array->length(); i++) {
1879 result_array->obj_at_put(i, array->at(i)());
1880 }
1881 return (jobjectArray)JNIHandles::make_local(THREAD, result_array());
1882 }
1883
1884 void add_oop(oop o) {
1885 Handle oh = Handle(Thread::current(), o);
1886 // Value might be oop, but JLS can't see as Object, just iterate through it...
1887 if (oh != NULL && oh->is_inline_type()) {
1888 oh->oop_iterate(this);
1889 } else {
1890 array->append(oh);
1891 }
1892 }
1893
1894 void do_oop(oop* o) { add_oop(HeapAccess<>::oop_load(o)); }
1895 void do_oop(narrowOop* v) { add_oop(HeapAccess<>::oop_load(v)); }
1896 };
1897
1898
1899 WB_ENTRY(jobjectArray, WB_getObjectsViaOopIterator(JNIEnv* env, jobject wb, jobject thing))
1900 ResourceMark rm(thread);
1901 Handle objh(thread, JNIHandles::resolve(thing));
1902 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1903 CollectOops collectOops;
1904 collectOops.array = array;
1905 objh->oop_iterate(&collectOops);
1906 return collectOops.create_jni_result(env, THREAD);
1907 WB_END
1908
1909 WB_ENTRY(jobjectArray, WB_getObjectsViaFrameOopIterator(JNIEnv* env, jobject wb, jint depth))
1910 ResourceMark rm(THREAD);
1911 GrowableArray<Handle>* array = new GrowableArray<Handle>(128);
1912 CollectOops collectOops;
1913 collectOops.array = array;
1914 StackFrameStream sfs(thread, false /* update */, true /* process_frames */);
1915 while (depth > 0) { // Skip the native WB API frame
1916 sfs.next();
1917 frame* f = sfs.current();
1918 f->oops_do(&collectOops, NULL, sfs.register_map());
1919 depth--;
1920 }
1921 return collectOops.create_jni_result(env, THREAD);
1922 WB_END
1923
1924
1925 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1926 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1927 VMThread::execute(&clear_ics);
1928 WB_END
1929
1930 template <typename T>
1931 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1932 assert(value != NULL, "sanity");
1933 if (method == NULL || name == NULL) {
1934 return false;
1935 }
1936 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1937 CHECK_JNI_EXCEPTION_(env, false);
1938 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1939 // can't be in VM when we call JNI
1940 ThreadToNativeFromVM ttnfv(thread);
1941 const char* flag_name = env->GetStringUTFChars(name, NULL);
1942 CHECK_JNI_EXCEPTION_(env, false);
1943 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1944 env->ReleaseStringUTFChars(name, flag_name);
1945 if (option == CompileCommand::Unknown) {
1946 return false;
1947 }
1948 if (!CompilerOracle::option_matches_type(option, *value)) {
1949 return false;
1950 }
1951 return CompilerOracle::has_option_value(mh, option, *value);
1952 }
1953
1954 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1955 bool result;
1956 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1957 // can't be in VM when we call JNI
1958 ThreadToNativeFromVM ttnfv(thread);
1959 return booleanBox(thread, env, result);
1960 }
1961 return NULL;
1962 WB_END
1963
1964 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1965 intx result;
1966 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1967 // can't be in VM when we call JNI
1968 ThreadToNativeFromVM ttnfv(thread);
1969 return longBox(thread, env, result);
1970 }
1971 return NULL;
1972 WB_END
1973
1974 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1975 uintx result;
1976 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1977 // can't be in VM when we call JNI
1978 ThreadToNativeFromVM ttnfv(thread);
1979 return longBox(thread, env, result);
1980 }
1981 return NULL;
1982 WB_END
1983
1984 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1985 double result;
1986 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1987 // can't be in VM when we call JNI
1988 ThreadToNativeFromVM ttnfv(thread);
1989 return doubleBox(thread, env, result);
1990 }
1991 return NULL;
1992 WB_END
1993
1994 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1995 ccstr ccstrResult;
1996 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1997 // can't be in VM when we call JNI
1998 ThreadToNativeFromVM ttnfv(thread);
1999 jstring result = env->NewStringUTF(ccstrResult);
2000 CHECK_JNI_EXCEPTION_(env, NULL);
2001 return result;
2002 }
2003 return NULL;
2004 WB_END
2005
2006 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2007 const char* p = Arguments::get_default_shared_archive_path();
2008 ThreadToNativeFromVM ttn(thread);
2009 jstring path_string = env->NewStringUTF(p);
2010
2011 CHECK_JNI_EXCEPTION_(env, NULL);
2012
2013 return path_string;
2014 WB_END
2015
2016 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2017 return UseSharedSpaces;
2018 WB_END
2019
2020 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2021 return FileMapInfo::memory_mapping_failed();
2022 WB_END
2023
2024 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
2025 oop obj_oop = JNIHandles::resolve(obj);
2026 return Universe::heap()->is_archived_object(obj_oop);
2027 WB_END
2028
2029 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2030 ResourceMark rm(THREAD);
2031 oop str_oop = JNIHandles::resolve(str);
2032 int length;
2033 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2034 return StringTable::lookup_shared(chars, length) == str_oop;
2035 WB_END
2036
2037 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2038 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2039 WB_END
2040
2041 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2042 return HeapShared::closed_regions_mapped();
2043 WB_END
2044
2045 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
2046 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2047 if (k->is_instance_klass()) {
2048 InstanceKlass *ik = InstanceKlass::cast(k);
2049 ConstantPool *cp = ik->constants();
2050 objArrayOop refs = cp->resolved_references();
2051 return (jobject)JNIHandles::make_local(THREAD, refs);
2052 } else {
2053 return NULL;
2054 }
2055 WB_END
2056
2057 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2058 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2059 if (!k->is_instance_klass()) {
2060 return;
2061 }
2062 InstanceKlass *ik = InstanceKlass::cast(k);
2063 ik->link_class(THREAD); // may throw verification error
2064 WB_END
2065
2066 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2067 return HeapShared::open_regions_mapped();
2068 WB_END
2069
2070 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2071 #if INCLUDE_CDS
2072 return true;
2073 #else
2074 return false;
2075 #endif // INCLUDE_CDS
2076 WB_END
2077
2078 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2079 #if COMPILER2_OR_JVMCI
2080 return true;
2081 #else
2082 return false;
2083 #endif
2084 WB_END
2085
2086 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2087 #if INCLUDE_JVMCI
2088 return JVMCIGlobals::gc_supports_jvmci();
2089 #else
2090 return false;
2091 #endif
2092 WB_END
2093
2094 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2095 return HeapShared::can_write();
2096 WB_END
2097
2098
2099 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2100 #if INCLUDE_JFR
2101 return true;
2102 #else
2103 return false;
2104 #endif // INCLUDE_JFR
2105 WB_END
2106
2107 #if INCLUDE_CDS
2108
2109 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2110 ResourceMark rm;
2111 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2112 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2113 return result;
2114 WB_END
2115
2116 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2117 ResourceMark rm;
2118 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2119 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2120 return result;
2121 WB_END
2122
2123 #endif // INCLUDE_CDS
2124
2125 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2126 class ReadMonitorsClosure : public HandshakeClosure {
2127 jboolean _executed;
2128
2129 void do_thread(Thread* th) {
2130 JavaThread* jt = JavaThread::cast(th);
2131 ResourceMark rm;
2132
2133 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2134
2135 if (!jt->has_last_Java_frame()) {
2136 return;
2137 }
2138 RegisterMap rmap(jt);
2139 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != NULL; vf = vf->java_sender()) {
2140 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2141 if (monitors != NULL) {
2142 int len = monitors->length();
2143 // Walk monitors youngest to oldest
2144 for (int i = len - 1; i >= 0; i--) {
2145 MonitorInfo* mon_info = monitors->at(i);
2146 if (mon_info->eliminated()) continue;
2147 oop owner = mon_info->owner();
2148 if (owner != NULL) {
2149 info->append(mon_info);
2150 }
2151 }
2152 }
2153 }
2154 _executed = true;
2155 }
2156
2157 public:
2158 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2159 jboolean executed() const { return _executed; }
2160 };
2161
2162 ReadMonitorsClosure rmc;
2163 oop thread_oop = JNIHandles::resolve(thread_handle);
2164 if (thread_oop != NULL) {
2165 JavaThread* target = java_lang_Thread::thread(thread_oop);
2166 Handshake::execute(&rmc, target);
2167 }
2168 return rmc.executed();
2169 WB_END
2170
2171 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2172 class TraceSelfClosure : public HandshakeClosure {
2173 jint _num_threads_completed;
2174
2175 void do_thread(Thread* th) {
2176 JavaThread* jt = JavaThread::cast(th);
2177 ResourceMark rm;
2178
2179 jt->print_on(tty);
2180 jt->print_stack_on(tty);
2181 tty->cr();
2182 Atomic::inc(&_num_threads_completed);
2183 }
2184
2185 public:
2186 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2187
2188 jint num_threads_completed() const { return _num_threads_completed; }
2189 };
2190 TraceSelfClosure tsc(Thread::current());
2191
2192 if (all_threads) {
2193 Handshake::execute(&tsc);
2194 } else {
2195 oop thread_oop = JNIHandles::resolve(thread_handle);
2196 if (thread_oop != NULL) {
2197 JavaThread* target = java_lang_Thread::thread(thread_oop);
2198 Handshake::execute(&tsc, target);
2199 }
2200 }
2201 return tsc.num_threads_completed();
2202 WB_END
2203
2204 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2205 class TraceSelfClosure : public AsyncHandshakeClosure {
2206 JavaThread* _self;
2207 void do_thread(Thread* th) {
2208 assert(th->is_Java_thread(), "sanity");
2209 // AsynchHandshake handshakes are only executed by target.
2210 assert(_self == th, "Must be");
2211 assert(Thread::current() == th, "Must be");
2212 JavaThread* jt = JavaThread::cast(th);
2213 ResourceMark rm;
2214 jt->print_on(tty);
2215 jt->print_stack_on(tty);
2216 tty->cr();
2217 }
2218
2219 public:
2220 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2221 };
2222 oop thread_oop = JNIHandles::resolve(thread_handle);
2223 if (thread_oop != NULL) {
2224 JavaThread* target = java_lang_Thread::thread(thread_oop);
2225 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2226 Handshake::execute(tsc, target);
2227 }
2228 WB_END
2229
2230 static volatile int _emulated_lock = 0;
2231
2232 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2233 JavaThread* self = JavaThread::current();
2234
2235 {
2236 // Before trying to acquire the lock transition into a safepoint safe state.
2237 // Otherwise if either suspender or suspendee blocks for a safepoint
2238 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2239 // the lock without allowing the safepoint to progress.
2240 ThreadBlockInVM tbivm(self);
2241
2242 // We will deadlock here if we are 'suspender' and 'suspendee'
2243 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2244 // at the right place.
2245 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2246 assert(_emulated_lock == 1, "Must be locked");
2247
2248 // Sleep much longer in suspendee to force situation where
2249 // 'suspender' is waiting above to acquire lock.
2250 os::naked_short_sleep(suspender ? 1 : 10);
2251 }
2252 Atomic::store(&_emulated_lock, 0);
2253 WB_END
2254
2255 // Some convenience methods to deal with objects from java
2256 int WhiteBox::offset_for_field(const char* field_name, oop object,
2257 Symbol* signature_symbol) {
2258 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2259
2260 //Get the class of our object
2261 Klass* arg_klass = object->klass();
2262 //Turn it into an instance-klass
2263 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2264
2265 //Create symbols to look for in the class
2266 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2267
2268 //To be filled in with an offset of the field we're looking for
2269 fieldDescriptor fd;
2270
2271 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2272 if (res == NULL) {
2273 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2274 name_symbol->as_C_string());
2275 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2276 }
2277
2278 //fetch the field at the offset we've found
2279 int dest_offset = fd.offset();
2280
2281 return dest_offset;
2282 }
2283
2284
2285 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2286 int offset = offset_for_field(field_name, object,
2287 vmSymbols::string_signature());
2288 oop string = object->obj_field(offset);
2289 if (string == NULL) {
2290 return NULL;
2291 }
2292 const char* ret = java_lang_String::as_utf8_string(string);
2293 return ret;
2294 }
2295
2296 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2297 int offset =
2298 offset_for_field(field_name, object, vmSymbols::bool_signature());
2299 bool ret = (object->bool_field(offset) == JNI_TRUE);
2300 return ret;
2301 }
2302
2303 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2304 ResourceMark rm;
2305 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2306 const char* klass_name = klass->external_name();
2307
2308 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2309
2310 // one by one registration natives for exception catching
2311 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2312 CHECK_JNI_EXCEPTION(env);
2313 for (int i = 0, n = method_count; i < n; ++i) {
2314 // Skip dummy entries
2315 if (method_array[i].fnPtr == NULL) continue;
2316 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2317 jthrowable throwable_obj = env->ExceptionOccurred();
2318 if (throwable_obj != NULL) {
2319 env->ExceptionClear();
2320 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2321 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2322 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2323 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2324 klass_name, method_array[i].name, method_array[i].signature);
2325 }
2326 } else {
2327 // Registration failed unexpectedly.
2328 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2329 klass_name, method_array[i].name, method_array[i].signature);
2330 env->UnregisterNatives(wbclass);
2331 break;
2332 }
2333 }
2334 }
2335 }
2336
2337 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2338 // can't be in VM when we call JNI
2339 ThreadToNativeFromVM ttnfv(thread);
2340 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2341 CHECK_JNI_EXCEPTION_(env, 0);
2342 int ret;
2343 {
2344 ThreadInVMfromNative ttvfn(thread); // back to VM
2345 ret = DirectivesParser::parse_string(dir, tty);
2346 }
2347 env->ReleaseStringUTFChars(compDirect, dir);
2348 // -1 for error parsing directive. Return 0 as number of directives added.
2349 if (ret == -1) {
2350 ret = 0;
2351 }
2352 return (jint) ret;
2353 WB_END
2354
2355 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2356 DirectivesStack::pop(count);
2357 WB_END
2358
2359 // Checks that the library libfile has the noexecstack bit set.
2360 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2361 jboolean ret = false;
2362 #ifdef LINUX
2363 // Can't be in VM when we call JNI.
2364 ThreadToNativeFromVM ttnfv(thread);
2365 const char* lf = env->GetStringUTFChars(libfile, NULL);
2366 CHECK_JNI_EXCEPTION_(env, 0);
2367 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2368 env->ReleaseStringUTFChars(libfile, lf);
2369 #endif
2370 return ret;
2371 WB_END
2372
2373 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2374 LINUX_ONLY(return OSContainer::is_containerized();)
2375 return false;
2376 WB_END
2377
2378 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2379 jobject o,
2380 jstring proc_cgroups,
2381 jstring proc_self_cgroup,
2382 jstring proc_self_mountinfo))
2383 jint ret = 0;
2384 #ifdef LINUX
2385 ThreadToNativeFromVM ttnfv(thread);
2386 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL);
2387 CHECK_JNI_EXCEPTION_(env, 0);
2388 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL);
2389 CHECK_JNI_EXCEPTION_(env, 0);
2390 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL);
2391 CHECK_JNI_EXCEPTION_(env, 0);
2392 u1 cg_type_flags = 0;
2393 // This sets cg_type_flags
2394 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2395 ret = (jint)cg_type_flags;
2396 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2397 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2398 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2399 #endif
2400 return ret;
2401 WB_END
2402
2403 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2404 os::print_os_info(tty);
2405 WB_END
2406
2407 // Elf decoder
2408 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2409 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2410 ElfFile::_do_not_cache_elf_section = true;
2411 #endif
2412 WB_END
2413
2414 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2415 return (jlong) ResolvedMethodTable::items_count();
2416 WB_END
2417
2418 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2419 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2420 WB_END
2421
2422 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2423 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2424 // Return size in bytes.
2425 return k->size() * wordSize;
2426 WB_END
2427
2428 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2429 // It explains how the thread's priority field is used for test state coordination.
2430 //
2431 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2432 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2433 jlong tid = java_lang_Thread::thread_id(target_oop);
2434 JavaThread* target = java_lang_Thread::thread(target_oop);
2435
2436 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2437 ThreadsListHandle tlh;
2438
2439 // Look up the target thread by tid to ensure it is present
2440 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2441 if (t == NULL) {
2442 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2443 }
2444
2445 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2446 // Allow target to terminate by boosting priority
2447 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2448
2449 // Now wait for the target to terminate
2450 while (!target->is_terminated()) {
2451 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2452 os::naked_short_sleep(0);
2453 }
2454
2455 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2456
2457 // Now release the GC inducing thread - we have to re-resolve the external oop that
2458 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2459 oop original = JNIHandles::resolve_non_null(target_handle);
2460 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2461
2462 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2463
2464 // The Java code should be creating garbage and triggering GC, which would potentially move
2465 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2466 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2467 // kick in.
2468 for (int i = 0; i < 5; i++) {
2469 oop original = JNIHandles::resolve_non_null(target_handle);
2470 oop current = t->threadObj();
2471 if (original != current) {
2472 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2473 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2474 } else {
2475 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2476 ThreadBlockInVM tbivm(thread);
2477 os::naked_short_sleep(50);
2478 }
2479 }
2480 WB_END
2481
2482 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2483 ResourceMark rm; // for verify
2484 stringStream st;
2485 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2486 frame* current_frame = fst.current();
2487 if (log) {
2488 current_frame->print_value_on(&st, NULL);
2489 }
2490 current_frame->verify(fst.register_map());
2491 }
2492 if (log) {
2493 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2494 tty->print_raw(st.as_string());
2495 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2496 }
2497 WB_END
2498
2499 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2500 #if INCLUDE_JVMTI
2501 return JNI_TRUE;
2502 #else
2503 return JNI_FALSE;
2504 #endif
2505 WB_END
2506
2507 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2508 os::naked_short_sleep(time);
2509 WB_END
2510
2511 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2512 ThreadToNativeFromVM ttn(thread);
2513 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2514 CHECK_JNI_EXCEPTION_(env, NULL);
2515 return info_string;
2516 WB_END
2517
2518 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2519 GCLocker::lock_critical(thread);
2520 WB_END
2521
2522 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2523 GCLocker::unlock_critical(thread);
2524 WB_END
2525
2526 #define CC (char*)
2527
2528 static JNINativeMethod methods[] = {
2529 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2530 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2531 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2532 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2533 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2534 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2535 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2536 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2537 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2538 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2539 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2540 {CC"parseCommandLine0",
2541 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2542 (void*) &WB_ParseCommandLine
2543 },
2544 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2545 (void*)&WB_AddToBootstrapClassLoaderSearch},
2546 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2547 (void*)&WB_AddToSystemClassLoaderSearch},
2548 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2549 (void*)&WB_GetCompressedOopsMaxHeapSize},
2550 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2551 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2552 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2553 #if INCLUDE_CDS
2554 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2555 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2556 #endif
2557 #if INCLUDE_G1GC
2558 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2559 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2560 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2561 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2562 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2563 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2564 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2565 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2566 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2567 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2568 (void*)&WB_G1AuxiliaryMemoryUsage },
2569 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2570 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2571 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2572 #endif // INCLUDE_G1GC
2573 #if INCLUDE_PARALLELGC
2574 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2575 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2576 #endif
2577 #if INCLUDE_NMT
2578 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2579 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2580 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2581 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2582 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2583 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2584 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2585 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2586 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2587 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2588 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2589 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2590 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2591 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2592 #endif // INCLUDE_NMT
2593 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2594 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2595 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2596 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2597 (void*)&WB_DeoptimizeMethod },
2598 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2599 (void*)&WB_IsMethodCompiled },
2600 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2601 (void*)&WB_IsMethodCompilable},
2602 {CC"isMethodQueuedForCompilation0",
2603 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2604 {CC"isIntrinsicAvailable0",
2605 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2606 (void*)&WB_IsIntrinsicAvailable},
2607 {CC"makeMethodNotCompilable0",
2608 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2609 {CC"testSetDontInlineMethod0",
2610 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2611 {CC"getMethodCompilationLevel0",
2612 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2613 {CC"getMethodEntryBci0",
2614 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2615 {CC"getCompileQueueSize",
2616 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2617 {CC"testSetForceInlineMethod0",
2618 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2619 {CC"enqueueMethodForCompilation0",
2620 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2621 {CC"enqueueInitializerForCompilation0",
2622 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2623 {CC"markMethodProfiled",
2624 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2625 {CC"clearMethodState0",
2626 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2627 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2628 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2629 {CC"matchesMethod",
2630 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2631 (void*)&WB_MatchesMethod},
2632 {CC"matchesInline",
2633 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2634 (void*)&WB_MatchesInline},
2635 {CC"shouldPrintAssembly",
2636 CC"(Ljava/lang/reflect/Executable;I)Z",
2637 (void*)&WB_ShouldPrintAssembly},
2638
2639 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2640 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2641 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2642 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2643 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2644 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2645 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2646 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2647 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2648 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2649 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2650 (void*)&WB_SetStringVMFlag},
2651 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2652 (void*)&WB_GetBooleanVMFlag},
2653 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2654 (void*)&WB_GetIntVMFlag},
2655 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2656 (void*)&WB_GetUintVMFlag},
2657 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2658 (void*)&WB_GetIntxVMFlag},
2659 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2660 (void*)&WB_GetUintxVMFlag},
2661 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2662 (void*)&WB_GetUint64VMFlag},
2663 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2664 (void*)&WB_GetSizeTVMFlag},
2665 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2666 (void*)&WB_GetDoubleVMFlag},
2667 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2668 (void*)&WB_GetStringVMFlag},
2669 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2670 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2671 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2672 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2673 {CC"allocateMetaspace",
2674 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2675 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2676 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2677 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2678 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2679 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2680 (void*)&WB_GetNMethod },
2681 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2682 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2683 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2684 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2685 {CC"getCompilationActivityMode",
2686 CC"()I", (void*)&WB_GetCompilationActivityMode},
2687 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2688 (void*)&WB_GetMethodData },
2689 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2690 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2691 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2692 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2693 (void*)&WB_DefineModule },
2694 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2695 (void*)&WB_AddModuleExports },
2696 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2697 (void*)&WB_AddReadsModule },
2698 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2699 (void*)&WB_AddModuleExportsToAllUnnamed },
2700 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2701 (void*)&WB_AddModuleExportsToAll },
2702 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2703 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2704 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2705 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2706 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2707 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2708 {CC"remapInstructionOperandFromCPCache0",
2709 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2710 {CC"encodeConstantPoolIndyIndex0",
2711 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2712 {CC"getObjectsViaKlassOopMaps0",
2713 CC"(Ljava/lang/Object;)[Ljava/lang/Object;", (void*)&WB_getObjectsViaKlassOopMaps},
2714 {CC"getObjectsViaOopIterator0",
2715 CC"(Ljava/lang/Object;)[Ljava/lang/Object;",(void*)&WB_getObjectsViaOopIterator},
2716 {CC"getObjectsViaFrameOopIterator",
2717 CC"(I)[Ljava/lang/Object;", (void*)&WB_getObjectsViaFrameOopIterator},
2718 {CC"getMethodBooleanOption",
2719 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2720 (void*)&WB_GetMethodBooleaneOption},
2721 {CC"getMethodIntxOption",
2722 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2723 (void*)&WB_GetMethodIntxOption},
2724 {CC"getMethodUintxOption",
2725 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2726 (void*)&WB_GetMethodUintxOption},
2727 {CC"getMethodDoubleOption",
2728 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2729 (void*)&WB_GetMethodDoubleOption},
2730 {CC"getMethodStringOption",
2731 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2732 (void*)&WB_GetMethodStringOption},
2733 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2734 (void*)&WB_GetDefaultArchivePath},
2735 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2736 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2737 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2738 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2739 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2740 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2741 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2742 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2743 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2744 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2745 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2746 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2747 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2748 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2749
2750 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2751 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2752 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2753 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2754 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2755 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2756 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2757 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2758 (void*)&WB_AddCompilerDirective },
2759 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2760 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2761 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2762 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2763 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2764 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2765 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2766 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2767 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2768 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2769 (void*)&WB_ConcurrentGCRunTo},
2770 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2771 (void*)&WB_CheckLibSpecifiesNoexecstack},
2772 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2773 {CC"validateCgroup",
2774 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2775 (void*)&WB_ValidateCgroup },
2776 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2777 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2778 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2779 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2780 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2781
2782 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2783 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2784 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2785 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2786 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2787 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2788 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2789 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2790 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2791 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2792 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2793
2794 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2795 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2796 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2797
2798 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2799 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2800 };
2801
2802
2803 #undef CC
2804
2805 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2806 {
2807 if (WhiteBoxAPI) {
2808 // Make sure that wbclass is loaded by the null classloader
2809 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2810 Handle loader(THREAD, ik->class_loader());
2811 if (loader.is_null()) {
2812 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2813 WhiteBox::set_used();
2814 }
2815 }
2816 }
2817 JVM_END