1 /*
2 * Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include <new>
27 #include "cds/cdsoffsets.hpp"
28 #include "cds/filemap.hpp"
29 #include "cds/heapShared.inline.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/classLoaderDataGraph.hpp"
32 #include "classfile/javaClasses.inline.hpp"
33 #include "classfile/modules.hpp"
34 #include "classfile/protectionDomainCache.hpp"
35 #include "classfile/stringTable.hpp"
36 #include "classfile/symbolTable.hpp"
37 #include "classfile/systemDictionary.hpp"
38 #include "classfile/vmSymbols.hpp"
39 #include "code/codeCache.hpp"
40 #include "compiler/compilationPolicy.hpp"
41 #include "compiler/directivesParser.hpp"
42 #include "compiler/methodMatcher.hpp"
43 #include "gc/shared/concurrentGCBreakpoints.hpp"
44 #include "gc/shared/gcConfig.hpp"
45 #include "gc/shared/gcLocker.inline.hpp"
46 #include "gc/shared/genArguments.hpp"
47 #include "gc/shared/genCollectedHeap.hpp"
48 #include "jvmtifiles/jvmtiEnv.hpp"
49 #include "logging/log.hpp"
50 #include "memory/iterator.hpp"
51 #include "memory/metadataFactory.hpp"
52 #include "memory/metaspace/testHelpers.hpp"
53 #include "memory/metaspaceUtils.hpp"
54 #include "memory/oopFactory.hpp"
55 #include "memory/resourceArea.hpp"
56 #include "memory/universe.hpp"
57 #include "oops/array.hpp"
58 #include "oops/compressedOops.hpp"
59 #include "oops/constantPool.inline.hpp"
60 #include "oops/klass.inline.hpp"
61 #include "oops/method.inline.hpp"
62 #include "oops/objArrayKlass.hpp"
63 #include "oops/objArrayOop.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "oops/typeArrayOop.inline.hpp"
66 #include "prims/resolvedMethodTable.hpp"
67 #include "prims/wbtestmethods/parserTests.hpp"
68 #include "prims/whitebox.inline.hpp"
69 #include "runtime/arguments.hpp"
70 #include "runtime/atomic.hpp"
71 #include "runtime/deoptimization.hpp"
72 #include "runtime/fieldDescriptor.inline.hpp"
73 #include "runtime/flags/jvmFlag.hpp"
74 #include "runtime/flags/jvmFlagAccess.hpp"
75 #include "runtime/frame.inline.hpp"
76 #include "runtime/handles.inline.hpp"
77 #include "runtime/handshake.hpp"
78 #include "runtime/interfaceSupport.inline.hpp"
79 #include "runtime/javaCalls.hpp"
80 #include "runtime/jniHandles.inline.hpp"
81 #include "runtime/os.hpp"
82 #include "runtime/stackFrameStream.inline.hpp"
83 #include "runtime/sweeper.hpp"
84 #include "runtime/synchronizer.hpp"
85 #include "runtime/thread.hpp"
86 #include "runtime/threadSMR.hpp"
87 #include "runtime/vframe.hpp"
88 #include "runtime/vm_version.hpp"
89 #include "services/memoryService.hpp"
90 #include "utilities/align.hpp"
91 #include "utilities/debug.hpp"
92 #include "utilities/elfFile.hpp"
93 #include "utilities/exceptions.hpp"
94 #include "utilities/macros.hpp"
95 #include "utilities/ostream.hpp"
96 #if INCLUDE_G1GC
97 #include "gc/g1/g1Arguments.hpp"
98 #include "gc/g1/g1CollectedHeap.inline.hpp"
99 #include "gc/g1/g1ConcurrentMark.hpp"
100 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
101 #include "gc/g1/heapRegionManager.hpp"
102 #include "gc/g1/heapRegionRemSet.hpp"
103 #endif // INCLUDE_G1GC
104 #if INCLUDE_PARALLELGC
105 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
106 #endif // INCLUDE_PARALLELGC
107 #if INCLUDE_NMT
108 #include "services/mallocSiteTable.hpp"
109 #include "services/memTracker.hpp"
110 #include "utilities/nativeCallStack.hpp"
111 #endif // INCLUDE_NMT
112 #if INCLUDE_JVMCI
113 #include "jvmci/jvmciEnv.hpp"
114 #include "jvmci/jvmciRuntime.hpp"
115 #endif
116
117 #ifdef LINUX
118 #include "os_linux.hpp"
119 #include "osContainer_linux.hpp"
120 #include "cgroupSubsystem_linux.hpp"
121 #endif
122
123 #define SIZE_T_MAX_VALUE ((size_t) -1)
124
125 #define CHECK_JNI_EXCEPTION_(env, value) \
126 do { \
127 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
128 THREAD->clear_pending_jni_exception_check(); \
129 if (HAS_PENDING_EXCEPTION) { \
130 return(value); \
131 } \
132 } while (0)
133
134 #define CHECK_JNI_EXCEPTION(env) \
135 do { \
136 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
137 THREAD->clear_pending_jni_exception_check(); \
138 if (HAS_PENDING_EXCEPTION) { \
139 return; \
140 } \
141 } while (0)
142
143 bool WhiteBox::_used = false;
144 volatile bool WhiteBox::compilation_locked = false;
145
146 class VM_WhiteBoxOperation : public VM_Operation {
147 public:
148 VM_WhiteBoxOperation() { }
149 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
150 bool allow_nested_vm_operations() const { return true; }
151 };
152
153
154 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
155 return (jlong)(void*)JNIHandles::resolve(obj);
156 WB_END
157
158 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
159 return heapOopSize;
160 WB_END
161
162 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
163 return os::vm_page_size();
164 WB_END
165
166 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
167 return os::vm_allocation_granularity();
168 WB_END
169
170 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
171 return os::large_page_size();
172 WB_END
173
174 class WBIsKlassAliveClosure : public LockedClassesDo {
175 Symbol* _name;
176 int _count;
177 public:
178 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
179
180 void do_klass(Klass* k) {
181 Symbol* ksym = k->name();
182 if (ksym->fast_compare(_name) == 0) {
183 _count++;
184 } else if (k->is_instance_klass()) {
185 // Need special handling for hidden classes because the JVM
186 // appends "+<hex-address>" to hidden class names.
187 InstanceKlass *ik = InstanceKlass::cast(k);
188 if (ik->is_hidden()) {
189 ResourceMark rm;
190 char* k_name = ksym->as_C_string();
191 // Find the first '+' char and truncate the string at that point.
192 // NOTE: This will not work correctly if the original hidden class
193 // name contains a '+'.
194 char* plus_char = strchr(k_name, '+');
195 if (plus_char != NULL) {
196 *plus_char = 0;
197 char* c_name = _name->as_C_string();
198 if (strcmp(c_name, k_name) == 0) {
199 _count++;
200 }
201 }
202 }
203 }
204 }
205
206 int count() const {
207 return _count;
208 }
209 };
210
211 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
212 oop h_name = JNIHandles::resolve(name);
213 if (h_name == NULL) return false;
214 Symbol* sym = java_lang_String::as_symbol(h_name);
215 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
216
217 WBIsKlassAliveClosure closure(sym);
218 ClassLoaderDataGraph::classes_do(&closure);
219
220 // Return the count of alive classes with this name.
221 return closure.count();
222 WB_END
223
224 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
225 oop h_name = JNIHandles::resolve(name);
226 if (h_name == NULL) return false;
227 Symbol* sym = java_lang_String::as_symbol(h_name);
228 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
229 return (jint)sym->refcount();
230 WB_END
231
232
233 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
234 #if INCLUDE_JVMTI
235 ResourceMark rm;
236 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
237 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
238 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
239 assert(err == JVMTI_ERROR_NONE, "must not fail");
240 #endif
241 }
242 WB_END
243
244 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
245 #if INCLUDE_JVMTI
246 ResourceMark rm;
247 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
248 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
249 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
250 assert(err == JVMTI_ERROR_NONE, "must not fail");
251 #endif
252 }
253 WB_END
254
255
256 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
257 return (jlong)Arguments::max_heap_for_compressed_oops();
258 }
259 WB_END
260
261 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
262 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
263 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
264 MinHeapSize,
265 InitialHeapSize,
266 MaxHeapSize,
267 SpaceAlignment,
268 HeapAlignment);
269 }
270 WB_END
271
272 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
273 size_t granularity = os::vm_allocation_granularity();
274 ReservedHeapSpace rhs(100 * granularity, granularity, os::vm_page_size());
275 VirtualSpace vs;
276 vs.initialize(rhs, 50 * granularity);
277
278 // Check if constraints are complied
279 if (!( UseCompressedOops && rhs.base() != NULL &&
280 CompressedOops::base() != NULL &&
281 CompressedOops::use_implicit_null_checks() )) {
282 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
283 "\tUseCompressedOops is %d\n"
284 "\trhs.base() is " PTR_FORMAT "\n"
285 "\tCompressedOops::base() is " PTR_FORMAT "\n"
286 "\tCompressedOops::use_implicit_null_checks() is %d",
287 UseCompressedOops,
288 p2i(rhs.base()),
289 p2i(CompressedOops::base()),
290 CompressedOops::use_implicit_null_checks());
291 return;
292 }
293 tty->print_cr("Reading from no access area... ");
294 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
295 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
296 WB_END
297
298 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
299 size_t magnitude, size_t iterations) {
300 size_t granularity = os::vm_allocation_granularity();
301 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, os::vm_page_size());
302 VirtualSpace vs;
303 if (!vs.initialize(rhs, 0)) {
304 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
305 return 3;
306 }
307
308 int seed = os::random();
309 tty->print_cr("Random seed is %d", seed);
310
311 for (size_t i = 0; i < iterations; i++) {
312
313 // Whether we will shrink or grow
314 bool shrink = os::random() % 2L == 0;
315
316 // Get random delta to resize virtual space
317 size_t delta = (size_t)os::random() % magnitude;
318
319 // If we are about to shrink virtual space below zero, then expand instead
320 if (shrink && vs.committed_size() < delta) {
321 shrink = false;
322 }
323
324 // Resizing by delta
325 if (shrink) {
326 vs.shrink_by(delta);
327 } else {
328 // If expanding fails expand_by will silently return false
329 vs.expand_by(delta, true);
330 }
331 }
332 return 0;
333 }
334
335 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
336 jlong reserved_space_size, jlong magnitude, jlong iterations))
337 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
338 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
339 iterations);
340 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
341 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
342 return 1;
343 }
344
345 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
346 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
347 if (sizeof(size_t) < sizeof(jlong)) {
348 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
349 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
350 || iterations > size_t_max_value) {
351 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
352 return 2;
353 }
354 }
355
356 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
357 (size_t) magnitude, (size_t) iterations);
358 WB_END
359
360 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
361 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
362 WB_END
363
364 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
365 #if INCLUDE_JVMCI
366 if (EnableJVMCI) {
367 JVMCIEnv jvmciEnv(thread, env, __FILE__, __LINE__);
368 return jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
369 }
370 #endif
371 return false;
372 WB_END
373
374 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
375 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
376 WB_END
377
378 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
379 return GCConfig::is_gc_selected_ergonomically();
380 WB_END
381
382 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
383 oop p = JNIHandles::resolve(obj);
384 #if INCLUDE_G1GC
385 if (UseG1GC) {
386 G1CollectedHeap* g1h = G1CollectedHeap::heap();
387 const HeapRegion* hr = g1h->heap_region_containing(p);
388 if (hr == NULL) {
389 return false;
390 }
391 return !(hr->is_young());
392 }
393 #endif
394 #if INCLUDE_PARALLELGC
395 if (UseParallelGC) {
396 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
397 return !psh->is_in_young(p);
398 }
399 #endif
400 #if INCLUDE_ZGC
401 if (UseZGC) {
402 return Universe::heap()->is_in(p);
403 }
404 #endif
405 #if INCLUDE_SHENANDOAHGC
406 if (UseShenandoahGC) {
407 return Universe::heap()->is_in(p);
408 }
409 #endif
410 GenCollectedHeap* gch = GenCollectedHeap::heap();
411 return !gch->is_in_young(p);
412 WB_END
413
414 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
415 oop p = JNIHandles::resolve(obj);
416 return p->size() * HeapWordSize;
417 WB_END
418
419 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
420 return (jlong)SpaceAlignment;
421 WB_END
422
423 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
424 return (jlong)HeapAlignment;
425 WB_END
426
427 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
428 return Universe::heap()->supports_concurrent_gc_breakpoints();
429 WB_END
430
431 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
432 ConcurrentGCBreakpoints::acquire_control();
433 WB_END
434
435 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
436 ConcurrentGCBreakpoints::release_control();
437 WB_END
438
439 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
440 ConcurrentGCBreakpoints::run_to_idle();
441 WB_END
442
443 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
444 Handle h_name(THREAD, JNIHandles::resolve(at));
445 ResourceMark rm;
446 const char* c_name = java_lang_String::as_utf8_string(h_name());
447 return ConcurrentGCBreakpoints::run_to(c_name);
448 WB_END
449
450 #if INCLUDE_G1GC
451
452 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
453 if (UseG1GC) {
454 G1CollectedHeap* g1h = G1CollectedHeap::heap();
455 oop result = JNIHandles::resolve(obj);
456 const HeapRegion* hr = g1h->heap_region_containing(result);
457 return hr->is_humongous();
458 }
459 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
460 WB_END
461
462 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
463 if (UseG1GC) {
464 G1CollectedHeap* g1h = G1CollectedHeap::heap();
465 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
466 return hr->is_humongous();
467 }
468 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
469 WB_END
470
471 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
472 if (UseG1GC) {
473 G1CollectedHeap* g1h = G1CollectedHeap::heap();
474 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
475 return hr->is_free();
476 }
477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
478 WB_END
479
480 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
481 if (UseG1GC) {
482 G1CollectedHeap* g1h = G1CollectedHeap::heap();
483 size_t nr = g1h->max_regions();
484 return (jlong)nr;
485 }
486 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
487 WB_END
488
489 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
490 if (UseG1GC) {
491 G1CollectedHeap* g1h = G1CollectedHeap::heap();
492 size_t nr = g1h->num_free_regions();
493 return (jlong)nr;
494 }
495 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
496 WB_END
497
498 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
499 if (UseG1GC) {
500 G1CollectedHeap* g1h = G1CollectedHeap::heap();
501 return g1h->concurrent_mark()->cm_thread()->in_progress();
502 }
503 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
504 WB_END
505
506 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
507 if (UseG1GC) {
508 G1CollectedHeap* g1h = G1CollectedHeap::heap();
509 if (!g1h->concurrent_mark()->cm_thread()->in_progress()) {
510 g1h->collect(GCCause::_wb_conc_mark);
511 return true;
512 }
513 return false;
514 }
515 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
516 WB_END
517
518 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
519 if (UseG1GC) {
520 return (jint)HeapRegion::GrainBytes;
521 }
522 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
523 WB_END
524
525 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
526 if (UseG1GC) {
527 return G1CollectedHeap::heap()->has_uncommittable_regions();
528 }
529 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
530 WB_END
531
532 #endif // INCLUDE_G1GC
533
534 #if INCLUDE_PARALLELGC
535
536 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
537 if (UseParallelGC) {
538 return GenAlignment;
539 }
540 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
541 WB_END
542
543 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
544 if (UseParallelGC) {
545 return GenAlignment;
546 }
547 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
548 WB_END
549
550 #endif // INCLUDE_PARALLELGC
551
552 #if INCLUDE_G1GC
553
554 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
555 if (UseG1GC) {
556 ResourceMark rm(THREAD);
557 G1CollectedHeap* g1h = G1CollectedHeap::heap();
558 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
559 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
560 return JNIHandles::make_local(THREAD, h());
561 }
562 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
563 WB_END
564
565 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
566 if (UseG1GC) {
567 G1NUMA* numa = G1NUMA::numa();
568 return (jint)numa->num_active_nodes();
569 }
570 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
571 WB_END
572
573 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
574 if (UseG1GC) {
575 G1NUMA* numa = G1NUMA::numa();
576 int num_node_ids = (int)numa->num_active_nodes();
577 const int* node_ids = numa->node_ids();
578
579 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
580 for (int i = 0; i < num_node_ids; i++) {
581 result->int_at_put(i, (jint)node_ids[i]);
582 }
583 return (jintArray) JNIHandles::make_local(THREAD, result);
584 }
585 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
586 WB_END
587
588 class OldRegionsLivenessClosure: public HeapRegionClosure {
589
590 private:
591 const int _liveness;
592 size_t _total_count;
593 size_t _total_memory;
594 size_t _total_memory_to_free;
595
596 public:
597 OldRegionsLivenessClosure(int liveness) :
598 _liveness(liveness),
599 _total_count(0),
600 _total_memory(0),
601 _total_memory_to_free(0) { }
602
603 size_t total_count() { return _total_count; }
604 size_t total_memory() { return _total_memory; }
605 size_t total_memory_to_free() { return _total_memory_to_free; }
606
607 bool do_heap_region(HeapRegion* r) {
608 if (r->is_old()) {
609 size_t prev_live = r->marked_bytes();
610 size_t live = r->live_bytes();
611 size_t size = r->used();
612 size_t reg_size = HeapRegion::GrainBytes;
613 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
614 _total_memory += size;
615 ++_total_count;
616 if (size == reg_size) {
617 // we don't include non-full regions since they are unlikely included in mixed gc
618 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
619 _total_memory_to_free += size - prev_live;
620 }
621 }
622 }
623 return false;
624 }
625 };
626
627
628 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
629 if (!UseG1GC) {
630 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
631 }
632 if (liveness < 0) {
633 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
634 }
635
636 G1CollectedHeap* g1h = G1CollectedHeap::heap();
637 OldRegionsLivenessClosure rli(liveness);
638 g1h->heap_region_iterate(&rli);
639
640 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
641 result->long_at_put(0, rli.total_count());
642 result->long_at_put(1, rli.total_memory());
643 result->long_at_put(2, rli.total_memory_to_free());
644 return (jlongArray) JNIHandles::make_local(THREAD, result);
645 WB_END
646
647 #endif // INCLUDE_G1GC
648
649 #if INCLUDE_NMT
650 // Alloc memory using the test memory type so that we can use that to see if
651 // NMT picks it up correctly
652 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
653 jlong addr = 0;
654 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
655 return addr;
656 WB_END
657
658 // Alloc memory with pseudo call stack. The test can create psudo malloc
659 // allocation site to stress the malloc tracking.
660 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
661 address pc = (address)(size_t)pseudo_stack;
662 NativeCallStack stack(&pc, 1);
663 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
664 WB_END
665
666 // Alloc memory with pseudo call stack and specific memory type.
667 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint type))
668 address pc = (address)(size_t)pseudo_stack;
669 NativeCallStack stack(&pc, 1);
670 return (jlong)(uintptr_t)os::malloc(size, (MEMFLAGS)type, stack);
671 WB_END
672
673 // Free the memory allocated by NMTAllocTest
674 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
675 os::free((void*)(uintptr_t)mem);
676 WB_END
677
678 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
679 jlong addr = 0;
680
681 addr = (jlong)(uintptr_t)os::reserve_memory(size);
682 MemTracker::record_virtual_memory_type((address)addr, mtTest);
683
684 return addr;
685 WB_END
686
687 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
688 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
689 MemTracker::record_virtual_memory_type((address)addr, mtTest);
690
691 return addr;
692 WB_END
693
694 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
695 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
696 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
697 WB_END
698
699 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
700 os::uncommit_memory((char *)(uintptr_t)addr, size);
701 WB_END
702
703 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
704 os::release_memory((char *)(uintptr_t)addr, size);
705 WB_END
706
707 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
708 int hash_size = MallocSiteTable::hash_buckets();
709 assert(hash_size > 0, "NMT hash_size should be > 0");
710 return (jint)hash_size;
711 WB_END
712
713 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
714 Arena* arena = new (mtTest) Arena(mtTest, size_t(init_size));
715 return (jlong)arena;
716 WB_END
717
718 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
719 Arena* a = (Arena*)arena;
720 delete a;
721 WB_END
722
723 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
724 Arena* a = (Arena*)arena;
725 a->Amalloc(size_t(size));
726 WB_END
727 #endif // INCLUDE_NMT
728
729 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
730 assert(method != NULL, "method should not be null");
731 ThreadToNativeFromVM ttn(thread);
732 return env->FromReflectedMethod(method);
733 }
734
735 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
736 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
737 private:
738 int _result;
739 const bool _make_not_entrant;
740 public:
741 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
742 _result(0), _make_not_entrant(make_not_entrant) { }
743 int result() const { return _result; }
744
745 void doit() {
746 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
747 if (t->has_last_Java_frame()) {
748 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
749 frame* f = fst.current();
750 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
751 Deoptimization::deoptimize(t, *f);
752 if (_make_not_entrant) {
753 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
754 assert(cm != NULL, "sanity check");
755 cm->make_not_entrant();
756 }
757 ++_result;
758 }
759 }
760 }
761 }
762 }
763 };
764
765 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
766 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
767 VMThread::execute(&op);
768 return op.result();
769 WB_END
770
771 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
772 bool result = false;
773 if (thread->has_last_Java_frame()) {
774 RegisterMap reg_map(thread);
775 javaVFrame *jvf = thread->last_java_vframe(®_map);
776 for (jint d = 0; d < depth && jvf != NULL; d++) {
777 jvf = jvf->java_sender();
778 }
779 result = jvf != NULL && jvf->fr().is_deoptimized_frame();
780 }
781 return result;
782 WB_END
783
784 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
785 CodeCache::mark_all_nmethods_for_deoptimization();
786 Deoptimization::deoptimize_all_marked();
787 WB_END
788
789 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
790 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
791 int result = 0;
792 CHECK_JNI_EXCEPTION_(env, result);
793 MutexLocker mu(Compile_lock);
794 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
795 if (is_osr) {
796 result += mh->mark_osr_nmethods();
797 } else if (mh->code() != NULL) {
798 mh->code()->mark_for_deoptimization();
799 ++result;
800 }
801 result += CodeCache::mark_for_deoptimization(mh());
802 if (result > 0) {
803 Deoptimization::deoptimize_all_marked();
804 }
805 return result;
806 WB_END
807
808 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
809 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
810 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
811 MutexLocker mu(Compile_lock);
812 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
813 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
814 if (code == NULL) {
815 return JNI_FALSE;
816 }
817 return (code->is_alive() && !code->is_marked_for_deoptimization());
818 WB_END
819
820 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
821 if (comp == NULL) {
822 return true;
823 }
824 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
825 bool exclude = directive->ExcludeOption;
826 DirectivesStack::release(directive);
827 return exclude;
828 }
829
830 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
831 if (is_osr) {
832 return CompilationPolicy::can_be_osr_compiled(mh, level);
833 } else {
834 return CompilationPolicy::can_be_compiled(mh, level);
835 }
836 }
837
838 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
839 if (method == NULL || comp_level > CompilationPolicy::highest_compile_level()) {
840 return false;
841 }
842 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
843 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
844 MutexLocker mu(Compile_lock);
845 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
846
847 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
848 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
849 // to exclude a compilation of 'method'.
850 if (comp_level == CompLevel_any) {
851 // Both compilers could have ExcludeOption set. Check all combinations.
852 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
853 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
854 if (excluded_c1 && excluded_c2) {
855 // Compilation of 'method' excluded by both compilers.
856 return false;
857 }
858
859 if (excluded_c1) {
860 // C1 only has ExcludeOption set: Check if compilable with C2.
861 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
862 } else if (excluded_c2) {
863 // C2 only has ExcludeOption set: Check if compilable with C1.
864 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
865 }
866 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
867 // Compilation of 'method' excluded by compiler used for 'comp_level'.
868 return false;
869 }
870
871 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
872 WB_END
873
874 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
875 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
876 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
877 MutexLocker mu(Compile_lock);
878 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
879 return mh->queued_for_compilation();
880 WB_END
881
882 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
883 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
884 return false; // Intrinsic is not available on a non-existent compilation level.
885 }
886 jmethodID method_id, compilation_context_id;
887 method_id = reflected_method_to_jmid(thread, env, method);
888 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
889 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
890
891 DirectiveSet* directive;
892 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
893 assert(comp != NULL, "compiler not available");
894 if (compilation_context != NULL) {
895 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
896 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
897 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
898 directive = DirectivesStack::getMatchingDirective(cch, comp);
899 } else {
900 // Calling with NULL matches default directive
901 directive = DirectivesStack::getDefaultDirective(comp);
902 }
903 bool result = comp->is_intrinsic_available(mh, directive);
904 DirectivesStack::release(directive);
905 return result;
906 WB_END
907
908 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
909 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
910 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
911 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
912 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
913 return (code != NULL ? code->comp_level() : CompLevel_none);
914 WB_END
915
916 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
917 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
918 CHECK_JNI_EXCEPTION(env);
919 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
920 if (is_osr) {
921 mh->set_not_osr_compilable("WhiteBox", comp_level);
922 } else {
923 mh->set_not_compilable("WhiteBox", comp_level);
924 }
925 WB_END
926
927 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
928 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
929 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
930 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
931 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
932 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
933 WB_END
934
935 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
936 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
937 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
938 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
939 bool result = mh->dont_inline();
940 mh->set_dont_inline(value == JNI_TRUE);
941 return result;
942 WB_END
943
944 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
945 if (comp_level == CompLevel_any) {
946 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
947 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
948 } else {
949 return CompileBroker::queue_size(comp_level);
950 }
951 WB_END
952
953 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
954 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
955 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
956 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
957 bool result = mh->force_inline();
958 mh->set_force_inline(value == JNI_TRUE);
959 return result;
960 WB_END
961
962 #ifdef LINUX
963 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
964 const char* proc_self_cgroup,
965 const char* proc_self_mountinfo,
966 u1* cg_flags) {
967 CgroupInfo cg_infos[CG_INFO_LENGTH];
968 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
969 proc_self_cgroup,
970 proc_self_mountinfo, cg_flags);
971 }
972 #endif
973
974 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
975 // Screen for unavailable/bad comp level or null method
976 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
977 if (method == NULL) {
978 tty->print_cr("WB error: request to compile NULL method");
979 return false;
980 }
981 if (comp_level > CompilationPolicy::highest_compile_level()) {
982 tty->print_cr("WB error: invalid compilation level %d", comp_level);
983 return false;
984 }
985 if (comp == NULL) {
986 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
987 return false;
988 }
989
990 // Check if compilation is blocking
991 methodHandle mh(THREAD, method);
992 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
993 bool is_blocking = !directive->BackgroundCompilationOption;
994 DirectivesStack::release(directive);
995
996 // Compile method and check result
997 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, CHECK_false);
998 MutexLocker mu(THREAD, Compile_lock);
999 bool is_queued = mh->queued_for_compilation();
1000 if ((!is_blocking && is_queued) || nm != NULL) {
1001 return true;
1002 }
1003 // Check code again because compilation may be finished before Compile_lock is acquired.
1004 if (bci == InvocationEntryBci) {
1005 CompiledMethod* code = mh->code();
1006 if (code != NULL && code->as_nmethod_or_null() != NULL) {
1007 return true;
1008 }
1009 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != NULL) {
1010 return true;
1011 }
1012 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1013 mh->print_short_name(tty);
1014 tty->cr();
1015 if (is_blocking && is_queued) {
1016 tty->print_cr("WB error: blocking compilation is still in queue!");
1017 }
1018 return false;
1019 }
1020
1021 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1022 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1023 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1024 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1025 WB_END
1026
1027 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1028 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1029 Method* clinit = ik->class_initializer();
1030 if (clinit == NULL || clinit->method_holder()->is_not_initialized()) {
1031 return false;
1032 }
1033 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1034 WB_END
1035
1036 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1037 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1038 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1039
1040 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1041 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1042 bool result = directive->PrintAssemblyOption;
1043 DirectivesStack::release(directive);
1044
1045 return result;
1046 WB_END
1047
1048 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1049 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1050 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1051
1052 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1053
1054 ResourceMark rm(THREAD);
1055 const char* error_msg = NULL;
1056 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1057 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1058
1059 if (m == NULL) {
1060 assert(error_msg != NULL, "Always have an error message");
1061 tty->print_cr("Got error: %s", error_msg);
1062 return -1; // Pattern failed
1063 }
1064
1065 // Pattern works - now check if it matches
1066 int result;
1067 if (m->match(mh, InlineMatcher::force_inline)) {
1068 result = 2; // Force inline match
1069 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1070 result = 1; // Dont inline match
1071 } else {
1072 result = 0; // No match
1073 }
1074 delete m;
1075 return result;
1076 WB_END
1077
1078 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1079 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1080 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1081
1082 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1083
1084 ResourceMark rm;
1085 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1086
1087 const char* error_msg = NULL;
1088
1089 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1090 if (m == NULL) {
1091 assert(error_msg != NULL, "Must have error_msg");
1092 tty->print_cr("Got error: %s", error_msg);
1093 return -1;
1094 }
1095
1096 // Pattern works - now check if it matches
1097 int result = m->matches(mh);
1098 delete m;
1099 assert(result == 0 || result == 1, "Result out of range");
1100 return result;
1101 WB_END
1102
1103 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1104 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1105 CHECK_JNI_EXCEPTION(env);
1106 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1107
1108 MethodData* mdo = mh->method_data();
1109 if (mdo == NULL) {
1110 Method::build_interpreter_method_data(mh, CHECK_AND_CLEAR);
1111 mdo = mh->method_data();
1112 }
1113 mdo->init();
1114 InvocationCounter* icnt = mdo->invocation_counter();
1115 InvocationCounter* bcnt = mdo->backedge_counter();
1116 // set i-counter according to CompilationPolicy::is_method_profiled
1117 icnt->set(Tier4MinInvocationThreshold);
1118 bcnt->set(Tier4CompileThreshold);
1119 WB_END
1120
1121 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1122 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1123 CHECK_JNI_EXCEPTION(env);
1124 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1125 MutexLocker mu(THREAD, Compile_lock);
1126 MethodData* mdo = mh->method_data();
1127 MethodCounters* mcs = mh->method_counters();
1128
1129 if (mdo != NULL) {
1130 mdo->init();
1131 ResourceMark rm(THREAD);
1132 int arg_count = mdo->method()->size_of_parameters();
1133 for (int i = 0; i < arg_count; i++) {
1134 mdo->set_arg_modified(i, 0);
1135 }
1136 MutexLocker mu(THREAD, mdo->extra_data_lock());
1137 mdo->clean_method_data(/*always_clean*/true);
1138 }
1139
1140 mh->clear_not_c1_compilable();
1141 mh->clear_not_c2_compilable();
1142 mh->clear_not_c2_osr_compilable();
1143 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1144 if (mcs != NULL) {
1145 mcs->clear_counters();
1146 }
1147 WB_END
1148
1149 template <typename T, int type_enum>
1150 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1151 if (name == NULL) {
1152 return false;
1153 }
1154 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1155 const char* flag_name = env->GetStringUTFChars(name, NULL);
1156 CHECK_JNI_EXCEPTION_(env, false);
1157 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1158 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1159 env->ReleaseStringUTFChars(name, flag_name);
1160 return (result == JVMFlag::SUCCESS);
1161 }
1162
1163 template <typename T, int type_enum>
1164 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1165 if (name == NULL) {
1166 return false;
1167 }
1168 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1169 const char* flag_name = env->GetStringUTFChars(name, NULL);
1170 CHECK_JNI_EXCEPTION_(env, false);
1171 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1172 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1173 env->ReleaseStringUTFChars(name, flag_name);
1174 return (result == JVMFlag::SUCCESS);
1175 }
1176
1177 template <typename T>
1178 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1179 ResourceMark rm(thread);
1180 jclass clazz = env->FindClass(name->as_C_string());
1181 CHECK_JNI_EXCEPTION_(env, NULL);
1182 jmethodID methodID = env->GetStaticMethodID(clazz,
1183 vmSymbols::valueOf_name()->as_C_string(),
1184 sig->as_C_string());
1185 CHECK_JNI_EXCEPTION_(env, NULL);
1186 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1187 CHECK_JNI_EXCEPTION_(env, NULL);
1188 return result;
1189 }
1190
1191 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1192 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1193 }
1194 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1195 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1196 }
1197 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1198 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1199 }
1200 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1201 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1202 }*/
1203 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1204 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1205 }
1206
1207 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1208 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1209 const char* flag_name = env->GetStringUTFChars(name, NULL);
1210 CHECK_JNI_EXCEPTION_(env, NULL);
1211 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1212 env->ReleaseStringUTFChars(name, flag_name);
1213 return result;
1214 }
1215
1216 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1217 const JVMFlag* flag = getVMFlag(thread, env, name);
1218 return (flag != NULL) && flag->is_constant_in_binary();
1219 WB_END
1220
1221 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1222 const JVMFlag* flag = getVMFlag(thread, env, name);
1223 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1224 WB_END
1225
1226 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1227 bool result;
1228 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1229 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1230 return booleanBox(thread, env, result);
1231 }
1232 return NULL;
1233 WB_END
1234
1235 template <typename T, int type_enum>
1236 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1237 T result;
1238 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1239 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1240 return longBox(thread, env, result);
1241 }
1242 return NULL;
1243 }
1244
1245 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1246 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1247 WB_END
1248
1249 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1250 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1251 WB_END
1252
1253 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1254 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1255 WB_END
1256
1257 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1258 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1259 WB_END
1260
1261 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1262 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1263 WB_END
1264
1265 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1266 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1267 WB_END
1268
1269 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1270 double result;
1271 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1272 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1273 return doubleBox(thread, env, result);
1274 }
1275 return NULL;
1276 WB_END
1277
1278 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1279 ccstr ccstrResult;
1280 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1281 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1282 jstring result = env->NewStringUTF(ccstrResult);
1283 CHECK_JNI_EXCEPTION_(env, NULL);
1284 return result;
1285 }
1286 return NULL;
1287 WB_END
1288
1289 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1290 bool result = value == JNI_TRUE ? true : false;
1291 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1292 WB_END
1293
1294 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1295 int result = value;
1296 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1297 WB_END
1298
1299 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1300 uint result = value;
1301 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1302 WB_END
1303
1304 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1305 intx result = value;
1306 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1307 WB_END
1308
1309 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1310 uintx result = value;
1311 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1312 WB_END
1313
1314 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1315 uint64_t result = value;
1316 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1317 WB_END
1318
1319 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1320 size_t result = value;
1321 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1322 WB_END
1323
1324 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1325 double result = value;
1326 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1327 WB_END
1328
1329 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1330 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1331 const char* ccstrValue;
1332 if (value == NULL) {
1333 ccstrValue = NULL;
1334 }
1335 else {
1336 ccstrValue = env->GetStringUTFChars(value, NULL);
1337 CHECK_JNI_EXCEPTION(env);
1338 }
1339 {
1340 ccstr param = ccstrValue;
1341 ThreadInVMfromNative ttvfn(thread); // back to VM
1342 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1343 assert(param == NULL, "old value is freed automatically and not returned");
1344 }
1345 }
1346 if (value != NULL) {
1347 env->ReleaseStringUTFChars(value, ccstrValue);
1348 }
1349 WB_END
1350
1351 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1352 WhiteBox::compilation_locked = true;
1353 WB_END
1354
1355 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1356 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1357 WhiteBox::compilation_locked = false;
1358 mo.notify_all();
1359 WB_END
1360
1361 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1362 // Force a code cache sweep and block until it finished
1363 NMethodSweeper::force_sweep();
1364 WB_END
1365
1366 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1367 ResourceMark rm(THREAD);
1368 int len;
1369 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1370 return (StringTable::lookup(name, len) != NULL);
1371 WB_END
1372
1373 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1374 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1375 Universe::heap()->collect(GCCause::_wb_full_gc);
1376 #if INCLUDE_G1GC
1377 if (UseG1GC) {
1378 // Needs to be cleared explicitly for G1
1379 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1380 }
1381 #endif // INCLUDE_G1GC
1382 WB_END
1383
1384 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1385 Universe::heap()->collect(GCCause::_wb_young_gc);
1386 WB_END
1387
1388 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1389 // static+volatile in order to force the read to happen
1390 // (not be eliminated by the compiler)
1391 static char c;
1392 static volatile char* p;
1393
1394 p = os::reserve_memory(os::vm_allocation_granularity());
1395 if (p == NULL) {
1396 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1397 }
1398
1399 c = *p;
1400 WB_END
1401
1402 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1403 const char* features = VM_Version::features_string();
1404 ThreadToNativeFromVM ttn(thread);
1405 jstring features_string = env->NewStringUTF(features);
1406
1407 CHECK_JNI_EXCEPTION_(env, NULL);
1408
1409 return features_string;
1410 WB_END
1411
1412 int WhiteBox::get_blob_type(const CodeBlob* code) {
1413 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1414 return CodeCache::get_code_heap(code)->code_blob_type();
1415 }
1416
1417 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1418 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1419 return CodeCache::get_code_heap(blob_type);
1420 }
1421
1422 struct CodeBlobStub {
1423 CodeBlobStub(const CodeBlob* blob) :
1424 name(os::strdup(blob->name())),
1425 size(blob->size()),
1426 blob_type(WhiteBox::get_blob_type(blob)),
1427 address((jlong) blob) { }
1428 ~CodeBlobStub() { os::free((void*) name); }
1429 const char* const name;
1430 const jint size;
1431 const jint blob_type;
1432 const jlong address;
1433 };
1434
1435 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1436 ResourceMark rm;
1437 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1438 CHECK_JNI_EXCEPTION_(env, NULL);
1439 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1440
1441 jstring name = env->NewStringUTF(cb->name);
1442 CHECK_JNI_EXCEPTION_(env, NULL);
1443 env->SetObjectArrayElement(result, 0, name);
1444
1445 jobject obj = integerBox(thread, env, cb->size);
1446 CHECK_JNI_EXCEPTION_(env, NULL);
1447 env->SetObjectArrayElement(result, 1, obj);
1448
1449 obj = integerBox(thread, env, cb->blob_type);
1450 CHECK_JNI_EXCEPTION_(env, NULL);
1451 env->SetObjectArrayElement(result, 2, obj);
1452
1453 obj = longBox(thread, env, cb->address);
1454 CHECK_JNI_EXCEPTION_(env, NULL);
1455 env->SetObjectArrayElement(result, 3, obj);
1456
1457 return result;
1458 }
1459
1460 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1461 ResourceMark rm(THREAD);
1462 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1463 CHECK_JNI_EXCEPTION_(env, NULL);
1464 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1465 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1466 jobjectArray result = NULL;
1467 if (code == NULL) {
1468 return result;
1469 }
1470 int comp_level = code->comp_level();
1471 int insts_size = code->insts_size();
1472
1473 ThreadToNativeFromVM ttn(thread);
1474 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1475 CHECK_JNI_EXCEPTION_(env, NULL);
1476 result = env->NewObjectArray(5, clazz, NULL);
1477 if (result == NULL) {
1478 return result;
1479 }
1480
1481 CodeBlobStub stub(code);
1482 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1483 CHECK_JNI_EXCEPTION_(env, NULL);
1484 env->SetObjectArrayElement(result, 0, codeBlob);
1485
1486 jobject level = integerBox(thread, env, comp_level);
1487 CHECK_JNI_EXCEPTION_(env, NULL);
1488 env->SetObjectArrayElement(result, 1, level);
1489
1490 jbyteArray insts = env->NewByteArray(insts_size);
1491 CHECK_JNI_EXCEPTION_(env, NULL);
1492 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1493 env->SetObjectArrayElement(result, 2, insts);
1494
1495 jobject id = integerBox(thread, env, code->compile_id());
1496 CHECK_JNI_EXCEPTION_(env, NULL);
1497 env->SetObjectArrayElement(result, 3, id);
1498
1499 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1500 CHECK_JNI_EXCEPTION_(env, NULL);
1501 env->SetObjectArrayElement(result, 4, entry_point);
1502
1503 return result;
1504 WB_END
1505
1506 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1507 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1508 BufferBlob* blob;
1509 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1510 if (full_size < size) {
1511 full_size += align_up(size - full_size, oopSize);
1512 }
1513 {
1514 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1515 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1516 if (blob != NULL) {
1517 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1518 }
1519 }
1520 // Track memory usage statistic after releasing CodeCache_lock
1521 MemoryService::track_code_cache_memory_usage();
1522 return blob;
1523 }
1524
1525 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1526 if (size < 0) {
1527 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1528 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1529 }
1530 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1531 WB_END
1532
1533 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1534 if (addr == 0) {
1535 return;
1536 }
1537 BufferBlob::free((BufferBlob*) addr);
1538 WB_END
1539
1540 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1541 ResourceMark rm;
1542 GrowableArray<CodeBlobStub*> blobs;
1543 {
1544 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1545 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1546 if (heap == NULL) {
1547 return NULL;
1548 }
1549 for (CodeBlob* cb = (CodeBlob*) heap->first();
1550 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1551 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1552 new (stub) CodeBlobStub(cb);
1553 blobs.append(stub);
1554 }
1555 }
1556 ThreadToNativeFromVM ttn(thread);
1557 jobjectArray result = NULL;
1558 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1559 CHECK_JNI_EXCEPTION_(env, NULL);
1560 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1561 CHECK_JNI_EXCEPTION_(env, NULL);
1562 if (result == NULL) {
1563 return result;
1564 }
1565 int i = 0;
1566 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1567 it != blobs.end(); ++it) {
1568 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1569 CHECK_JNI_EXCEPTION_(env, NULL);
1570 env->SetObjectArrayElement(result, i, obj);
1571 CHECK_JNI_EXCEPTION_(env, NULL);
1572 ++i;
1573 }
1574 return result;
1575 WB_END
1576
1577 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1578 return CompileBroker::get_compilation_activity_mode();
1579 WB_END
1580
1581 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1582 if (addr == 0) {
1583 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1584 "WB_GetCodeBlob: addr is null");
1585 }
1586 ThreadToNativeFromVM ttn(thread);
1587 CodeBlobStub stub((CodeBlob*) addr);
1588 return codeBlob2objectArray(thread, env, &stub);
1589 WB_END
1590
1591 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1592 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1593 CHECK_JNI_EXCEPTION_(env, 0);
1594 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1595 return (jlong) mh->method_data();
1596 WB_END
1597
1598 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1599 return (jlong) thread->stack_size();
1600 WB_END
1601
1602 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1603 return (jlong) thread->stack_overflow_state()->stack_available(
1604 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1605 WB_END
1606
1607
1608 int WhiteBox::array_bytes_to_length(size_t bytes) {
1609 return Array<u1>::bytes_to_length(bytes);
1610 }
1611
1612 ///////////////
1613 // MetaspaceTestContext and MetaspaceTestArena
1614 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1615 metaspace::MetaspaceTestContext* context =
1616 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1617 return (jlong)p2i(context);
1618 WB_END
1619
1620 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1621 delete (metaspace::MetaspaceTestContext*) context;
1622 WB_END
1623
1624 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1625 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1626 context0->purge_area();
1627 WB_END
1628
1629 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1630 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1631 context0->print_on(tty);
1632 WB_END
1633
1634 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1635 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1636 return context0->committed_words();
1637 WB_END
1638
1639 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1640 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1641 return context0->used_words();
1642 WB_END
1643
1644 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1645 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1646 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1647 return (jlong)p2i(context0->create_arena(type));
1648 WB_END
1649
1650 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1651 delete (metaspace::MetaspaceTestArena*) arena;
1652 WB_END
1653
1654 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1655 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1656 MetaWord* p = arena0->allocate((size_t) word_size);
1657 return (jlong)p2i(p);
1658 WB_END
1659
1660 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1661 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1662 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1663 WB_END
1664
1665 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1666 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1667 WB_END
1668
1669 //////////////
1670
1671 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1672 if (size < 0) {
1673 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1674 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1675 }
1676
1677 oop class_loader_oop = JNIHandles::resolve(class_loader);
1678 ClassLoaderData* cld = class_loader_oop != NULL
1679 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1680 : ClassLoaderData::the_null_class_loader_data();
1681
1682 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1683
1684 return (jlong)(uintptr_t)metadata;
1685 WB_END
1686
1687 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1688 jstring version, jstring location, jobjectArray packages))
1689 Handle h_module (THREAD, JNIHandles::resolve(module));
1690 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1691 WB_END
1692
1693 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1694 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1695 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1696 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1697 WB_END
1698
1699 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1700 Handle h_module (THREAD, JNIHandles::resolve(module));
1701 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1702 WB_END
1703
1704 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1705 Handle h_module (THREAD, JNIHandles::resolve(module));
1706 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1707 WB_END
1708
1709 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1710 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1711 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1712 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1713 WB_END
1714
1715 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1716 if (inc < 0) {
1717 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1718 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1719 }
1720
1721 jlong max_size_t = (jlong) ((size_t) -1);
1722 if (inc > max_size_t) {
1723 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1724 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1725 }
1726
1727 size_t new_cap_until_GC = 0;
1728 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1729 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1730 if (!success) {
1731 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1732 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1733 "due to contention with another thread");
1734 }
1735 return (jlong) new_cap_until_GC;
1736 WB_END
1737
1738 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1739 return (jlong) MetaspaceGC::capacity_until_GC();
1740 WB_END
1741
1742 // The function is only valid when CDS is available.
1743 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1744 #if INCLUDE_CDS
1745 return (jlong)MetaspaceShared::core_region_alignment();
1746 #else
1747 ShouldNotReachHere();
1748 return 0L;
1749 #endif
1750 WB_END
1751
1752 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1753 oop obj_oop = JNIHandles::resolve(obj);
1754 return (jboolean) obj_oop->mark().has_monitor();
1755 WB_END
1756
1757 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1758 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1759 return ObjectSynchronizer::request_deflate_idle_monitors();
1760 WB_END
1761
1762 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1763 VM_ForceSafepoint force_safepoint_op;
1764 VMThread::execute(&force_safepoint_op);
1765 WB_END
1766
1767 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1768 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1769 return (jlong) ik->constants();
1770 WB_END
1771
1772 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1773 return ConstantPool::CPCACHE_INDEX_TAG;
1774 WB_END
1775
1776 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1777 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1778 ConstantPool* cp = ik->constants();
1779 if (cp->cache() == NULL) {
1780 return -1;
1781 }
1782 return cp->cache()->length();
1783 WB_END
1784
1785 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1786 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1787 ConstantPool* cp = ik->constants();
1788 if (cp->cache() == NULL) {
1789 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1790 }
1791 jint cpci = index;
1792 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1793 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1794 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1795 }
1796 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1797 return cpi;
1798 WB_END
1799
1800 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1801 return ConstantPool::encode_invokedynamic_index(index);
1802 WB_END
1803
1804 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1805 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1806 VMThread::execute(&clear_ics);
1807 WB_END
1808
1809 template <typename T>
1810 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1811 assert(value != NULL, "sanity");
1812 if (method == NULL || name == NULL) {
1813 return false;
1814 }
1815 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1816 CHECK_JNI_EXCEPTION_(env, false);
1817 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1818 // can't be in VM when we call JNI
1819 ThreadToNativeFromVM ttnfv(thread);
1820 const char* flag_name = env->GetStringUTFChars(name, NULL);
1821 CHECK_JNI_EXCEPTION_(env, false);
1822 enum CompileCommand option = CompilerOracle::string_to_option(flag_name);
1823 env->ReleaseStringUTFChars(name, flag_name);
1824 if (option == CompileCommand::Unknown) {
1825 return false;
1826 }
1827 if (!CompilerOracle::option_matches_type(option, *value)) {
1828 return false;
1829 }
1830 return CompilerOracle::has_option_value(mh, option, *value);
1831 }
1832
1833 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1834 bool result;
1835 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1836 // can't be in VM when we call JNI
1837 ThreadToNativeFromVM ttnfv(thread);
1838 return booleanBox(thread, env, result);
1839 }
1840 return NULL;
1841 WB_END
1842
1843 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1844 intx result;
1845 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1846 // can't be in VM when we call JNI
1847 ThreadToNativeFromVM ttnfv(thread);
1848 return longBox(thread, env, result);
1849 }
1850 return NULL;
1851 WB_END
1852
1853 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1854 uintx result;
1855 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1856 // can't be in VM when we call JNI
1857 ThreadToNativeFromVM ttnfv(thread);
1858 return longBox(thread, env, result);
1859 }
1860 return NULL;
1861 WB_END
1862
1863 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1864 double result;
1865 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1866 // can't be in VM when we call JNI
1867 ThreadToNativeFromVM ttnfv(thread);
1868 return doubleBox(thread, env, result);
1869 }
1870 return NULL;
1871 WB_END
1872
1873 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1874 ccstr ccstrResult;
1875 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1876 // can't be in VM when we call JNI
1877 ThreadToNativeFromVM ttnfv(thread);
1878 jstring result = env->NewStringUTF(ccstrResult);
1879 CHECK_JNI_EXCEPTION_(env, NULL);
1880 return result;
1881 }
1882 return NULL;
1883 WB_END
1884
1885 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
1886 const char* p = Arguments::get_default_shared_archive_path();
1887 ThreadToNativeFromVM ttn(thread);
1888 jstring path_string = env->NewStringUTF(p);
1889
1890 CHECK_JNI_EXCEPTION_(env, NULL);
1891
1892 return path_string;
1893 WB_END
1894
1895 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
1896 return UseSharedSpaces;
1897 WB_END
1898
1899 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
1900 return FileMapInfo::memory_mapping_failed();
1901 WB_END
1902
1903 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1904 oop obj_oop = JNIHandles::resolve(obj);
1905 return HeapShared::is_archived_object(obj_oop);
1906 WB_END
1907
1908 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1909 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1910 WB_END
1911
1912 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1913 return !HeapShared::closed_archive_heap_region_mapped();
1914 WB_END
1915
1916 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1917 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1918 if (k->is_instance_klass()) {
1919 InstanceKlass *ik = InstanceKlass::cast(k);
1920 ConstantPool *cp = ik->constants();
1921 objArrayOop refs = cp->resolved_references();
1922 return (jobject)JNIHandles::make_local(THREAD, refs);
1923 } else {
1924 return NULL;
1925 }
1926 WB_END
1927
1928 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
1929 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1930 if (!k->is_instance_klass()) {
1931 return;
1932 }
1933 InstanceKlass *ik = InstanceKlass::cast(k);
1934 ik->link_class(THREAD); // may throw verification error
1935 WB_END
1936
1937 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1938 return HeapShared::open_archive_heap_region_mapped();
1939 WB_END
1940
1941 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
1942 #if INCLUDE_CDS
1943 return true;
1944 #else
1945 return false;
1946 #endif // INCLUDE_CDS
1947 WB_END
1948
1949 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
1950 #if COMPILER2_OR_JVMCI
1951 return true;
1952 #else
1953 return false;
1954 #endif
1955 WB_END
1956
1957 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
1958 #if INCLUDE_JVMCI
1959 return JVMCIGlobals::gc_supports_jvmci();
1960 #else
1961 return false;
1962 #endif
1963 WB_END
1964
1965 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
1966 return HeapShared::is_heap_object_archiving_allowed();
1967 WB_END
1968
1969
1970 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
1971 #if INCLUDE_JFR
1972 return true;
1973 #else
1974 return false;
1975 #endif // INCLUDE_JFR
1976 WB_END
1977
1978 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
1979 #if defined(DTRACE_ENABLED)
1980 return true;
1981 #else
1982 return false;
1983 #endif // DTRACE_ENABLED
1984 WB_END
1985
1986 #if INCLUDE_CDS
1987
1988 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1989 ResourceMark rm;
1990 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1991 int result = CDSOffsets::find_offset(c_name);
1992 return (jint)result;
1993 WB_END
1994
1995 #endif // INCLUDE_CDS
1996
1997 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1998 class TraceSelfClosure : public HandshakeClosure {
1999 jint _num_threads_completed;
2000
2001 void do_thread(Thread* th) {
2002 JavaThread* jt = th->as_Java_thread();
2003 ResourceMark rm;
2004
2005 jt->print_on(tty);
2006 jt->print_stack_on(tty);
2007 tty->cr();
2008 Atomic::inc(&_num_threads_completed);
2009 }
2010
2011 public:
2012 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2013
2014 jint num_threads_completed() const { return _num_threads_completed; }
2015 };
2016 TraceSelfClosure tsc(Thread::current());
2017
2018 if (all_threads) {
2019 Handshake::execute(&tsc);
2020 } else {
2021 oop thread_oop = JNIHandles::resolve(thread_handle);
2022 if (thread_oop != NULL) {
2023 JavaThread* target = java_lang_Thread::thread(thread_oop);
2024 Handshake::execute(&tsc, target);
2025 }
2026 }
2027 return tsc.num_threads_completed();
2028 WB_END
2029
2030 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2031 class TraceSelfClosure : public AsyncHandshakeClosure {
2032 JavaThread* _self;
2033 void do_thread(Thread* th) {
2034 assert(th->is_Java_thread(), "sanity");
2035 // AsynchHandshake handshakes are only executed by target.
2036 assert(_self == th, "Must be");
2037 assert(Thread::current() == th, "Must be");
2038 JavaThread* jt = th->as_Java_thread();
2039 ResourceMark rm;
2040 jt->print_on(tty);
2041 jt->print_stack_on(tty);
2042 tty->cr();
2043 }
2044
2045 public:
2046 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2047 };
2048 oop thread_oop = JNIHandles::resolve(thread_handle);
2049 if (thread_oop != NULL) {
2050 JavaThread* target = java_lang_Thread::thread(thread_oop);
2051 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2052 Handshake::execute(tsc, target);
2053 }
2054 WB_END
2055
2056 static volatile int _emulated_lock = 0;
2057
2058 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2059 JavaThread* self = JavaThread::current();
2060
2061 {
2062 // Before trying to acquire the lock transition into a safepoint safe state.
2063 // Otherwise if either suspender or suspendee blocks for a safepoint
2064 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2065 // the lock without allowing the safepoint to progress.
2066 ThreadBlockInVM tbivm(self);
2067
2068 // We will deadlock here if we are 'suspender' and 'suspendee'
2069 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2070 // at the right place.
2071 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2072 assert(_emulated_lock == 1, "Must be locked");
2073
2074 // Sleep much longer in suspendee to force situation where
2075 // 'suspender' is waiting above to acquire lock.
2076 os::naked_short_sleep(suspender ? 1 : 10);
2077 }
2078 Atomic::store(&_emulated_lock, 0);
2079 WB_END
2080
2081 // Some convenience methods to deal with objects from java
2082 int WhiteBox::offset_for_field(const char* field_name, oop object,
2083 Symbol* signature_symbol) {
2084 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
2085
2086 //Get the class of our object
2087 Klass* arg_klass = object->klass();
2088 //Turn it into an instance-klass
2089 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2090
2091 //Create symbols to look for in the class
2092 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2093
2094 //To be filled in with an offset of the field we're looking for
2095 fieldDescriptor fd;
2096
2097 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2098 if (res == NULL) {
2099 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2100 name_symbol->as_C_string());
2101 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2102 }
2103
2104 //fetch the field at the offset we've found
2105 int dest_offset = fd.offset();
2106
2107 return dest_offset;
2108 }
2109
2110
2111 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2112 int offset = offset_for_field(field_name, object,
2113 vmSymbols::string_signature());
2114 oop string = object->obj_field(offset);
2115 if (string == NULL) {
2116 return NULL;
2117 }
2118 const char* ret = java_lang_String::as_utf8_string(string);
2119 return ret;
2120 }
2121
2122 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2123 int offset =
2124 offset_for_field(field_name, object, vmSymbols::bool_signature());
2125 bool ret = (object->bool_field(offset) == JNI_TRUE);
2126 return ret;
2127 }
2128
2129 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2130 ResourceMark rm;
2131 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2132 const char* klass_name = klass->external_name();
2133
2134 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2135
2136 // one by one registration natives for exception catching
2137 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2138 CHECK_JNI_EXCEPTION(env);
2139 for (int i = 0, n = method_count; i < n; ++i) {
2140 // Skip dummy entries
2141 if (method_array[i].fnPtr == NULL) continue;
2142 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2143 jthrowable throwable_obj = env->ExceptionOccurred();
2144 if (throwable_obj != NULL) {
2145 env->ExceptionClear();
2146 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2147 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2148 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2149 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2150 klass_name, method_array[i].name, method_array[i].signature);
2151 }
2152 } else {
2153 // Registration failed unexpectedly.
2154 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2155 klass_name, method_array[i].name, method_array[i].signature);
2156 env->UnregisterNatives(wbclass);
2157 break;
2158 }
2159 }
2160 }
2161 }
2162
2163 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2164 // can't be in VM when we call JNI
2165 ThreadToNativeFromVM ttnfv(thread);
2166 const char* dir = env->GetStringUTFChars(compDirect, NULL);
2167 CHECK_JNI_EXCEPTION_(env, 0);
2168 int ret;
2169 {
2170 ThreadInVMfromNative ttvfn(thread); // back to VM
2171 ret = DirectivesParser::parse_string(dir, tty);
2172 }
2173 env->ReleaseStringUTFChars(compDirect, dir);
2174 // -1 for error parsing directive. Return 0 as number of directives added.
2175 if (ret == -1) {
2176 ret = 0;
2177 }
2178 return (jint) ret;
2179 WB_END
2180
2181 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2182 DirectivesStack::pop(count);
2183 WB_END
2184
2185 // Checks that the library libfile has the noexecstack bit set.
2186 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2187 jboolean ret = false;
2188 #ifdef LINUX
2189 // Can't be in VM when we call JNI.
2190 ThreadToNativeFromVM ttnfv(thread);
2191 const char* lf = env->GetStringUTFChars(libfile, NULL);
2192 CHECK_JNI_EXCEPTION_(env, 0);
2193 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2194 env->ReleaseStringUTFChars(libfile, lf);
2195 #endif
2196 return ret;
2197 WB_END
2198
2199 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2200 LINUX_ONLY(return OSContainer::is_containerized();)
2201 return false;
2202 WB_END
2203
2204 // Physical memory of the host machine (including containers)
2205 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2206 LINUX_ONLY(return os::Linux::physical_memory();)
2207 return os::physical_memory();
2208 WB_END
2209
2210 // Physical swap of the host machine (including containers), Linux only.
2211 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2212 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2213 return -1; // Not used/implemented on other platforms
2214 WB_END
2215
2216 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2217 jobject o,
2218 jstring proc_cgroups,
2219 jstring proc_self_cgroup,
2220 jstring proc_self_mountinfo))
2221 jint ret = 0;
2222 #ifdef LINUX
2223 ThreadToNativeFromVM ttnfv(thread);
2224 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, NULL);
2225 CHECK_JNI_EXCEPTION_(env, 0);
2226 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, NULL);
2227 CHECK_JNI_EXCEPTION_(env, 0);
2228 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, NULL);
2229 CHECK_JNI_EXCEPTION_(env, 0);
2230 u1 cg_type_flags = 0;
2231 // This sets cg_type_flags
2232 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2233 ret = (jint)cg_type_flags;
2234 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2235 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2236 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2237 #endif
2238 return ret;
2239 WB_END
2240
2241 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2242 os::print_os_info(tty);
2243 WB_END
2244
2245 // Elf decoder
2246 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2247 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2248 ElfFile::_do_not_cache_elf_section = true;
2249 #endif
2250 WB_END
2251
2252 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2253 return (jlong) ResolvedMethodTable::items_count();
2254 WB_END
2255
2256 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2257 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
2258 WB_END
2259
2260 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2261 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2262 // Return size in bytes.
2263 return k->size() * wordSize;
2264 WB_END
2265
2266 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2267 // It explains how the thread's priority field is used for test state coordination.
2268 //
2269 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2270 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2271 jlong tid = java_lang_Thread::thread_id(target_oop);
2272 JavaThread* target = java_lang_Thread::thread(target_oop);
2273
2274 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2275 ThreadsListHandle tlh;
2276
2277 // Look up the target thread by tid to ensure it is present
2278 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2279 if (t == NULL) {
2280 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2281 }
2282
2283 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2284 // Allow target to terminate by boosting priority
2285 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2286
2287 // Now wait for the target to terminate
2288 while (!target->is_terminated()) {
2289 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2290 os::naked_short_sleep(0);
2291 }
2292
2293 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2294
2295 // Now release the GC inducing thread - we have to re-resolve the external oop that
2296 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2297 oop original = JNIHandles::resolve_non_null(target_handle);
2298 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2299
2300 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2301
2302 // The Java code should be creating garbage and triggering GC, which would potentially move
2303 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2304 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2305 // kick in.
2306 for (int i = 0; i < 5; i++) {
2307 oop original = JNIHandles::resolve_non_null(target_handle);
2308 oop current = t->threadObj();
2309 if (original != current) {
2310 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2311 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2312 } else {
2313 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2314 ThreadBlockInVM tbivm(thread);
2315 os::naked_short_sleep(50);
2316 }
2317 }
2318 WB_END
2319
2320 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2321 ResourceMark rm; // for verify
2322 stringStream st;
2323 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2324 frame* current_frame = fst.current();
2325 if (log) {
2326 current_frame->print_value_on(&st, NULL);
2327 }
2328 current_frame->verify(fst.register_map());
2329 }
2330 if (log) {
2331 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2332 tty->print_raw(st.as_string());
2333 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2334 }
2335 WB_END
2336
2337 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2338 #if INCLUDE_JVMTI
2339 return JNI_TRUE;
2340 #else
2341 return JNI_FALSE;
2342 #endif
2343 WB_END
2344
2345 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2346 os::naked_short_sleep(time);
2347 WB_END
2348
2349 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2350 ThreadToNativeFromVM ttn(thread);
2351 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2352 CHECK_JNI_EXCEPTION_(env, NULL);
2353 return info_string;
2354 WB_END
2355
2356 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2357 GCLocker::lock_critical(thread);
2358 WB_END
2359
2360 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2361 GCLocker::unlock_critical(thread);
2362 WB_END
2363
2364 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2365 void* const from = (void*)addr;
2366 void* const to = (void*)(addr + size);
2367 if (from > to) {
2368 os::pretouch_memory(from, to, os::vm_page_size());
2369 }
2370 WB_END
2371
2372 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2373 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2374 WB_END
2375
2376 #define CC (char*)
2377
2378 static JNINativeMethod methods[] = {
2379 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2380 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2381 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2382 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2383 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2384 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2385 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2386 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2387 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2388 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2389 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2390 {CC"parseCommandLine0",
2391 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2392 (void*) &WB_ParseCommandLine
2393 },
2394 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2395 (void*)&WB_AddToBootstrapClassLoaderSearch},
2396 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2397 (void*)&WB_AddToSystemClassLoaderSearch},
2398 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2399 (void*)&WB_GetCompressedOopsMaxHeapSize},
2400 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2401 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2402 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2403 #if INCLUDE_CDS
2404 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2405 #endif
2406 #if INCLUDE_G1GC
2407 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2408 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2409 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2410 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2411 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2412 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2413 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2414 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2415 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2416 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2417 (void*)&WB_G1AuxiliaryMemoryUsage },
2418 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2419 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2420 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2421 #endif // INCLUDE_G1GC
2422 #if INCLUDE_PARALLELGC
2423 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2424 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2425 #endif
2426 #if INCLUDE_NMT
2427 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2428 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2429 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2430 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2431 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2432 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2433 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2434 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2435 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2436 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2437 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2438 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2439 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2440 #endif // INCLUDE_NMT
2441 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2442 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2443 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2444 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2445 (void*)&WB_DeoptimizeMethod },
2446 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2447 (void*)&WB_IsMethodCompiled },
2448 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2449 (void*)&WB_IsMethodCompilable},
2450 {CC"isMethodQueuedForCompilation0",
2451 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2452 {CC"isIntrinsicAvailable0",
2453 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2454 (void*)&WB_IsIntrinsicAvailable},
2455 {CC"makeMethodNotCompilable0",
2456 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2457 {CC"testSetDontInlineMethod0",
2458 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2459 {CC"getMethodCompilationLevel0",
2460 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2461 {CC"getMethodEntryBci0",
2462 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2463 {CC"getCompileQueueSize",
2464 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2465 {CC"testSetForceInlineMethod0",
2466 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2467 {CC"enqueueMethodForCompilation0",
2468 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2469 {CC"enqueueInitializerForCompilation0",
2470 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2471 {CC"markMethodProfiled",
2472 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2473 {CC"clearMethodState0",
2474 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2475 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2476 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2477 {CC"matchesMethod",
2478 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2479 (void*)&WB_MatchesMethod},
2480 {CC"matchesInline",
2481 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2482 (void*)&WB_MatchesInline},
2483 {CC"shouldPrintAssembly",
2484 CC"(Ljava/lang/reflect/Executable;I)Z",
2485 (void*)&WB_ShouldPrintAssembly},
2486
2487 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2488 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2489 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2490 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2491 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2492 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2493 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2494 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2495 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2496 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2497 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2498 (void*)&WB_SetStringVMFlag},
2499 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2500 (void*)&WB_GetBooleanVMFlag},
2501 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2502 (void*)&WB_GetIntVMFlag},
2503 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2504 (void*)&WB_GetUintVMFlag},
2505 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2506 (void*)&WB_GetIntxVMFlag},
2507 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2508 (void*)&WB_GetUintxVMFlag},
2509 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2510 (void*)&WB_GetUint64VMFlag},
2511 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2512 (void*)&WB_GetSizeTVMFlag},
2513 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2514 (void*)&WB_GetDoubleVMFlag},
2515 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2516 (void*)&WB_GetStringVMFlag},
2517 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2518 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2519 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2520 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2521 {CC"allocateMetaspace",
2522 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2523 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2524 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2525 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2526 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2527 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2528 (void*)&WB_GetNMethod },
2529 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2530 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2531 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2532 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2533 {CC"getCompilationActivityMode",
2534 CC"()I", (void*)&WB_GetCompilationActivityMode},
2535 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2536 (void*)&WB_GetMethodData },
2537 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2538 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2539 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2540 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2541 (void*)&WB_DefineModule },
2542 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2543 (void*)&WB_AddModuleExports },
2544 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2545 (void*)&WB_AddReadsModule },
2546 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2547 (void*)&WB_AddModuleExportsToAllUnnamed },
2548 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2549 (void*)&WB_AddModuleExportsToAll },
2550 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2551 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2552 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2553 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2554 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2555 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2556 {CC"remapInstructionOperandFromCPCache0",
2557 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2558 {CC"encodeConstantPoolIndyIndex0",
2559 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2560 {CC"getMethodBooleanOption",
2561 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2562 (void*)&WB_GetMethodBooleaneOption},
2563 {CC"getMethodIntxOption",
2564 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2565 (void*)&WB_GetMethodIntxOption},
2566 {CC"getMethodUintxOption",
2567 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2568 (void*)&WB_GetMethodUintxOption},
2569 {CC"getMethodDoubleOption",
2570 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2571 (void*)&WB_GetMethodDoubleOption},
2572 {CC"getMethodStringOption",
2573 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2574 (void*)&WB_GetMethodStringOption},
2575 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2576 (void*)&WB_GetDefaultArchivePath},
2577 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2578 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2579 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2580 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2581 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2582 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2583 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2584 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2585 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2586 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2587 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2588 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2589 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2590 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2591
2592 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2593 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2594 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2595 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2596 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2597 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2598 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2599 (void*)&WB_AddCompilerDirective },
2600 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2601 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2602 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2603 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2604 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2605 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2606 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2607 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2608 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2609 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2610 (void*)&WB_ConcurrentGCRunTo},
2611 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2612 (void*)&WB_CheckLibSpecifiesNoexecstack},
2613 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2614 {CC"validateCgroup",
2615 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2616 (void*)&WB_ValidateCgroup },
2617 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2618 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2619 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2620 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2621 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2622 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2623 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2624
2625 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2626 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2627 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2628 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2629 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2630 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2631 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2632 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2633 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2634 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2635 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2636
2637 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2638 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2639 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2640
2641 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2642 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2643 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2644 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2645 };
2646
2647
2648 #undef CC
2649
2650 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2651 {
2652 if (WhiteBoxAPI) {
2653 // Make sure that wbclass is loaded by the null classloader
2654 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2655 Handle loader(THREAD, ik->class_loader());
2656 if (loader.is_null()) {
2657 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2658 WhiteBox::set_used();
2659 }
2660 }
2661 }
2662 JVM_END