1 /*
2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/classLoaderData.hpp"
30 #include "classfile/modules.hpp"
31 #include "classfile/stringTable.hpp"
32 #include "code/codeCache.hpp"
33 #include "compiler/methodMatcher.hpp"
34 #include "compiler/directivesParser.hpp"
35 #include "jvmtifiles/jvmtiEnv.hpp"
36 #include "memory/metadataFactory.hpp"
37 #include "memory/metaspaceShared.hpp"
38 #include "memory/iterator.hpp"
39 #include "memory/resourceArea.hpp"
40 #include "memory/universe.hpp"
41 #include "memory/oopFactory.hpp"
42 #include "oops/array.hpp"
43 #include "oops/constantPool.hpp"
44 #include "oops/objArrayKlass.hpp"
45 #include "oops/objArrayOop.inline.hpp"
46 #include "oops/oop.inline.hpp"
47 #include "oops/typeArrayOop.inline.hpp"
48 #include "prims/wbtestmethods/parserTests.hpp"
49 #include "prims/whitebox.hpp"
50 #include "runtime/arguments.hpp"
51 #include "runtime/compilationPolicy.hpp"
52 #include "runtime/deoptimization.hpp"
53 #include "runtime/handshake.hpp"
54 #include "runtime/interfaceSupport.hpp"
55 #include "runtime/javaCalls.hpp"
56 #include "runtime/jniHandles.inline.hpp"
57 #include "runtime/os.hpp"
58 #include "runtime/sweeper.hpp"
59 #include "runtime/thread.hpp"
60 #include "runtime/threadSMR.hpp"
61 #include "runtime/vm_version.hpp"
62 #include "utilities/align.hpp"
63 #include "utilities/debug.hpp"
64 #include "utilities/elfFile.hpp"
65 #include "utilities/exceptions.hpp"
66 #include "utilities/macros.hpp"
67 #if INCLUDE_CDS
68 #include "prims/cdsoffsets.hpp"
69 #endif // INCLUDE_CDS
70 #if INCLUDE_ALL_GCS
71 #include "gc/g1/concurrentMarkThread.hpp"
72 #include "gc/g1/g1CollectedHeap.inline.hpp"
73 #include "gc/g1/g1ConcurrentMark.hpp"
74 #include "gc/g1/heapRegionRemSet.hpp"
75 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
76 #include "gc/parallel/adjoiningGenerations.hpp"
77 #endif // INCLUDE_ALL_GCS
78 #if INCLUDE_NMT
79 #include "services/mallocSiteTable.hpp"
80 #include "services/memTracker.hpp"
81 #include "utilities/nativeCallStack.hpp"
82 #endif // INCLUDE_NMT
83
84 #ifdef LINUX
85 #include "osContainer_linux.hpp"
86 #endif
87
88 #define SIZE_T_MAX_VALUE ((size_t) -1)
89
90 bool WhiteBox::_used = false;
91 volatile bool WhiteBox::compilation_locked = false;
92
93 class VM_WhiteBoxOperation : public VM_Operation {
94 public:
95 VM_WhiteBoxOperation() { }
96 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
97 bool allow_nested_vm_operations() const { return true; }
98 };
99
100
101 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
102 return (jlong)(void*)JNIHandles::resolve(obj);
103 WB_END
104
105 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
106 return heapOopSize;
107 WB_END
108
109 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
110 return os::vm_page_size();
111 WB_END
112
113 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
114 return os::vm_allocation_granularity();
115 WB_END
116
117 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
118 return os::large_page_size();
119 WB_END
120
121 class WBIsKlassAliveClosure : public KlassClosure {
122 Symbol* _name;
123 bool _found;
124 public:
125 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
126
127 void do_klass(Klass* k) {
128 if (_found) return;
129 Symbol* ksym = k->name();
130 if (ksym->fast_compare(_name) == 0) {
131 _found = true;
132 }
133 }
134
135 bool found() const {
136 return _found;
137 }
138 };
139
140 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
141 oop h_name = JNIHandles::resolve(name);
142 if (h_name == NULL) return false;
143 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
144 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
145
146 WBIsKlassAliveClosure closure(sym);
147 ClassLoaderDataGraph::classes_do(&closure);
148
149 return closure.found();
150 WB_END
151
152 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
153 #if INCLUDE_JVMTI
154 ResourceMark rm;
155 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
156 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
157 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
158 assert(err == JVMTI_ERROR_NONE, "must not fail");
159 #endif
160 }
161 WB_END
162
163 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
164 #if INCLUDE_JVMTI
165 ResourceMark rm;
166 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
167 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
168 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
169 assert(err == JVMTI_ERROR_NONE, "must not fail");
170 #endif
171 }
172 WB_END
173
174
175 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
176 return (jlong)Arguments::max_heap_for_compressed_oops();
177 }
178 WB_END
179
180 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
181 CollectorPolicy * p = Universe::heap()->collector_policy();
182 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
183 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
184 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
185 p->space_alignment(), p->heap_alignment());
186 }
187 WB_END
188
189 #ifndef PRODUCT
190 // Forward declaration
191 void TestReservedSpace_test();
192 void TestReserveMemorySpecial_test();
193 void TestVirtualSpace_test();
194 void TestMetaspaceAux_test();
195 #endif
196
197 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
198 #ifndef PRODUCT
199 TestReservedSpace_test();
200 TestReserveMemorySpecial_test();
201 TestVirtualSpace_test();
202 TestMetaspaceAux_test();
203 #endif
204 WB_END
205
206 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
207 size_t granularity = os::vm_allocation_granularity();
208 ReservedHeapSpace rhs(100 * granularity, granularity, false);
209 VirtualSpace vs;
210 vs.initialize(rhs, 50 * granularity);
211
212 // Check if constraints are complied
213 if (!( UseCompressedOops && rhs.base() != NULL &&
214 Universe::narrow_oop_base() != NULL &&
215 Universe::narrow_oop_use_implicit_null_checks() )) {
216 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
217 "\tUseCompressedOops is %d\n"
218 "\trhs.base() is " PTR_FORMAT "\n"
219 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
220 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
221 UseCompressedOops,
222 p2i(rhs.base()),
223 p2i(Universe::narrow_oop_base()),
224 Universe::narrow_oop_use_implicit_null_checks());
225 return;
226 }
227 tty->print_cr("Reading from no access area... ");
228 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
229 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
230 WB_END
231
232 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
233 size_t magnitude, size_t iterations) {
234 size_t granularity = os::vm_allocation_granularity();
235 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
236 VirtualSpace vs;
237 if (!vs.initialize(rhs, 0)) {
238 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
239 return 3;
240 }
241
242 int seed = os::random();
243 tty->print_cr("Random seed is %d", seed);
244 os::init_random(seed);
245
246 for (size_t i = 0; i < iterations; i++) {
247
248 // Whether we will shrink or grow
249 bool shrink = os::random() % 2L == 0;
250
251 // Get random delta to resize virtual space
252 size_t delta = (size_t)os::random() % magnitude;
253
254 // If we are about to shrink virtual space below zero, then expand instead
255 if (shrink && vs.committed_size() < delta) {
256 shrink = false;
257 }
258
259 // Resizing by delta
260 if (shrink) {
261 vs.shrink_by(delta);
262 } else {
263 // If expanding fails expand_by will silently return false
264 vs.expand_by(delta, true);
265 }
266 }
267 return 0;
268 }
269
270 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
271 jlong reserved_space_size, jlong magnitude, jlong iterations))
272 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
273 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
274 iterations);
275 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
276 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
277 return 1;
278 }
279
280 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
281 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
282 if (sizeof(size_t) < sizeof(jlong)) {
283 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
284 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
285 || iterations > size_t_max_value) {
286 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
287 return 2;
288 }
289 }
290
291 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
292 (size_t) magnitude, (size_t) iterations);
293 WB_END
294
295 static const jint serial_code = 1;
296 static const jint parallel_code = 2;
297 static const jint cms_code = 4;
298 static const jint g1_code = 8;
299
300 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
301 if (UseSerialGC) {
302 return serial_code;
303 } else if (UseParallelGC || UseParallelOldGC) {
304 return parallel_code;
305 } if (UseConcMarkSweepGC) {
306 return cms_code;
307 } else if (UseG1GC) {
308 return g1_code;
309 }
310 ShouldNotReachHere();
311 return 0;
312 WB_END
313
314 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
315 #if INCLUDE_ALL_GCS
316 return serial_code | parallel_code | cms_code | g1_code;
317 #else
318 return serial_code;
319 #endif // INCLUDE_ALL_GCS
320 WB_END
321
322 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
323 if (UseSerialGC) {
324 return FLAG_IS_ERGO(UseSerialGC);
325 } else if (UseParallelGC) {
326 return FLAG_IS_ERGO(UseParallelGC);
327 } else if (UseParallelOldGC) {
328 return FLAG_IS_ERGO(UseParallelOldGC);
329 } else if (UseConcMarkSweepGC) {
330 return FLAG_IS_ERGO(UseConcMarkSweepGC);
331 } else if (UseG1GC) {
332 return FLAG_IS_ERGO(UseG1GC);
333 }
334 ShouldNotReachHere();
335 return false;
336 WB_END
337
338 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
339 oop p = JNIHandles::resolve(obj);
340 #if INCLUDE_ALL_GCS
341 if (UseG1GC) {
342 G1CollectedHeap* g1 = G1CollectedHeap::heap();
343 const HeapRegion* hr = g1->heap_region_containing(p);
344 if (hr == NULL) {
345 return false;
346 }
347 return !(hr->is_young());
348 } else if (UseParallelGC) {
349 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
350 return !psh->is_in_young(p);
351 }
352 #endif // INCLUDE_ALL_GCS
353 GenCollectedHeap* gch = GenCollectedHeap::heap();
354 return !gch->is_in_young(p);
355 WB_END
356
357 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
358 oop p = JNIHandles::resolve(obj);
359 return p->size() * HeapWordSize;
360 WB_END
361
362 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
363 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
364 return (jlong)alignment;
365 WB_END
366
367 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
368 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
369 return (jlong)alignment;
370 WB_END
371
372 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
373 return Universe::heap()->supports_concurrent_phase_control();
374 WB_END
375
376 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
377 const char* const* phases = Universe::heap()->concurrent_phases();
378 jint nphases = 0;
379 for ( ; phases[nphases] != NULL; ++nphases) ;
380
381 ResourceMark rm(thread);
382 ThreadToNativeFromVM ttn(thread);
383 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
384 CHECK_JNI_EXCEPTION_(env, NULL);
385
386 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
387 CHECK_JNI_EXCEPTION_(env, NULL);
388
389 // If push fails, return with pending exception.
390 if (env->PushLocalFrame(nphases) < 0) return NULL;
391 for (jint i = 0; i < nphases; ++i) {
392 jstring phase = env->NewStringUTF(phases[i]);
393 CHECK_JNI_EXCEPTION_(env, NULL);
394 env->SetObjectArrayElement(result, i, phase);
395 CHECK_JNI_EXCEPTION_(env, NULL);
396 }
397 env->PopLocalFrame(NULL);
398
399 return result;
400 WB_END
401
402 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
403 Handle h_name(THREAD, JNIHandles::resolve(name));
404 ResourceMark rm;
405 const char* c_name = java_lang_String::as_utf8_string(h_name());
406 return Universe::heap()->request_concurrent_phase(c_name);
407 WB_END
408
409 #if INCLUDE_ALL_GCS
410 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
411 if (UseG1GC) {
412 G1CollectedHeap* g1 = G1CollectedHeap::heap();
413 oop result = JNIHandles::resolve(obj);
414 const HeapRegion* hr = g1->heap_region_containing(result);
415 return hr->is_humongous();
416 }
417 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
418 WB_END
419
420 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
421 if (UseG1GC) {
422 G1CollectedHeap* g1 = G1CollectedHeap::heap();
423 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
424 return hr->is_humongous();
425 }
426 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
427 WB_END
428
429 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
430 if (UseG1GC) {
431 G1CollectedHeap* g1 = G1CollectedHeap::heap();
432 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
433 return hr->is_free();
434 }
435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
436 WB_END
437
438 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
439 if (UseG1GC) {
440 G1CollectedHeap* g1 = G1CollectedHeap::heap();
441 size_t nr = g1->max_regions();
442 return (jlong)nr;
443 }
444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
445 WB_END
446
447 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
448 if (UseG1GC) {
449 G1CollectedHeap* g1 = G1CollectedHeap::heap();
450 size_t nr = g1->num_free_regions();
451 return (jlong)nr;
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1h = G1CollectedHeap::heap();
459 return g1h->concurrent_mark()->cm_thread()->during_cycle();
460 }
461 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
462 WB_END
463
464 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
465 if (UseG1GC) {
466 G1CollectedHeap* g1h = G1CollectedHeap::heap();
467 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
468 g1h->collect(GCCause::_wb_conc_mark);
469 return true;
470 }
471 return false;
472 }
473 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
474 WB_END
475
476 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
477 if (UseG1GC) {
478 return (jint)HeapRegion::GrainBytes;
479 }
480 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
481 WB_END
482
483 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
484 #if INCLUDE_ALL_GCS
485 if (UseParallelGC) {
486 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
487 }
488 #endif // INCLUDE_ALL_GCS
489 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
490 WB_END
491
492 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
493 #if INCLUDE_ALL_GCS
494 if (UseParallelGC) {
495 return ParallelScavengeHeap::heap()->generation_alignment();
496 }
497 #endif // INCLUDE_ALL_GCS
498 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
499 WB_END
500
501 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
502 #if INCLUDE_ALL_GCS
503 if (UseG1GC) {
504 ResourceMark rm(THREAD);
505 G1CollectedHeap* g1h = G1CollectedHeap::heap();
506 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
507 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
508 return JNIHandles::make_local(env, h());
509 }
510 #endif // INCLUDE_ALL_GCS
511 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
512 WB_END
513
514 class OldRegionsLivenessClosure: public HeapRegionClosure {
515
516 private:
517 const int _liveness;
518 size_t _total_count;
519 size_t _total_memory;
520 size_t _total_memory_to_free;
521
522 public:
523 OldRegionsLivenessClosure(int liveness) :
524 _liveness(liveness),
525 _total_count(0),
526 _total_memory(0),
527 _total_memory_to_free(0) { }
528
529 size_t total_count() { return _total_count; }
530 size_t total_memory() { return _total_memory; }
531 size_t total_memory_to_free() { return _total_memory_to_free; }
532
533 bool do_heap_region(HeapRegion* r) {
534 if (r->is_old()) {
535 size_t prev_live = r->marked_bytes();
536 size_t live = r->live_bytes();
537 size_t size = r->used();
538 size_t reg_size = HeapRegion::GrainBytes;
539 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
540 _total_memory += size;
541 ++_total_count;
542 if (size == reg_size) {
543 // we don't include non-full regions since they are unlikely included in mixed gc
544 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
545 _total_memory_to_free += size - prev_live;
546 }
547 }
548 }
549 return false;
550 }
551 };
552
553
554 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
555 if (!UseG1GC) {
556 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
557 }
558 if (liveness < 0) {
559 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
560 }
561
562 G1CollectedHeap* g1h = G1CollectedHeap::heap();
563 OldRegionsLivenessClosure rli(liveness);
564 g1h->heap_region_iterate(&rli);
565
566 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
567 result->long_at_put(0, rli.total_count());
568 result->long_at_put(1, rli.total_memory());
569 result->long_at_put(2, rli.total_memory_to_free());
570 return (jlongArray) JNIHandles::make_local(env, result);
571 WB_END
572
573 #endif // INCLUDE_ALL_GCS
574
575 #if INCLUDE_NMT
576 // Alloc memory using the test memory type so that we can use that to see if
577 // NMT picks it up correctly
578 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
579 jlong addr = 0;
580 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
581 return addr;
582 WB_END
583
584 // Alloc memory with pseudo call stack. The test can create psudo malloc
585 // allocation site to stress the malloc tracking.
586 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
587 address pc = (address)(size_t)pseudo_stack;
588 NativeCallStack stack(&pc, 1);
589 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
590 WB_END
591
592 // Free the memory allocated by NMTAllocTest
593 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
594 os::free((void*)(uintptr_t)mem);
595 WB_END
596
597 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
598 jlong addr = 0;
599
600 addr = (jlong)(uintptr_t)os::reserve_memory(size);
601 MemTracker::record_virtual_memory_type((address)addr, mtTest);
602
603 return addr;
604 WB_END
605
606 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
607 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
608 MemTracker::record_virtual_memory_type((address)addr, mtTest);
609
610 return addr;
611 WB_END
612
613 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
614 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
615 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
616 WB_END
617
618 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
619 os::uncommit_memory((char *)(uintptr_t)addr, size);
620 WB_END
621
622 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
623 os::release_memory((char *)(uintptr_t)addr, size);
624 WB_END
625
626 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
627 // Test that we can downgrade NMT levels but not upgrade them.
628 if (MemTracker::tracking_level() == NMT_off) {
629 MemTracker::transition_to(NMT_off);
630 return MemTracker::tracking_level() == NMT_off;
631 } else {
632 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
633 MemTracker::transition_to(NMT_summary);
634 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
635
636 // Can't go to detail once NMT is set to summary.
637 MemTracker::transition_to(NMT_detail);
638 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
639
640 // Shutdown sets tracking level to minimal.
641 MemTracker::shutdown();
642 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
643
644 // Once the tracking level is minimal, we cannot increase to summary.
645 // The code ignores this request instead of asserting because if the malloc site
646 // table overflows in another thread, it tries to change the code to summary.
647 MemTracker::transition_to(NMT_summary);
648 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
649
650 // Really can never go up to detail, verify that the code would never do this.
651 MemTracker::transition_to(NMT_detail);
652 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
653 return MemTracker::tracking_level() == NMT_minimal;
654 }
655 WB_END
656
657 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
658 int hash_size = MallocSiteTable::hash_buckets();
659 assert(hash_size > 0, "NMT hash_size should be > 0");
660 return (jint)hash_size;
661 WB_END
662 #endif // INCLUDE_NMT
663
664 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
665 assert(method != NULL, "method should not be null");
666 ThreadToNativeFromVM ttn(thread);
667 return env->FromReflectedMethod(method);
668 }
669
670 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
671 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
672 private:
673 int _result;
674 const bool _make_not_entrant;
675 public:
676 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
677 _result(0), _make_not_entrant(make_not_entrant) { }
678 int result() const { return _result; }
679
680 void doit() {
681 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
682 if (t->has_last_Java_frame()) {
683 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
684 frame* f = fst.current();
685 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
686 RegisterMap* reg_map = fst.register_map();
687 Deoptimization::deoptimize(t, *f, reg_map);
688 if (_make_not_entrant) {
689 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
690 assert(cm != NULL, "sanity check");
691 cm->make_not_entrant();
692 }
693 ++_result;
694 }
695 }
696 }
697 }
698 }
699 };
700
701 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
702 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
703 VMThread::execute(&op);
704 return op.result();
705 WB_END
706
707 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
708 MutexLockerEx mu(Compile_lock);
709 CodeCache::mark_all_nmethods_for_deoptimization();
710 VM_Deoptimize op;
711 VMThread::execute(&op);
712 WB_END
713
714 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
715 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
716 int result = 0;
717 CHECK_JNI_EXCEPTION_(env, result);
718 MutexLockerEx mu(Compile_lock);
719 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
720 if (is_osr) {
721 result += mh->mark_osr_nmethods();
722 } else if (mh->code() != NULL) {
723 mh->code()->mark_for_deoptimization();
724 ++result;
725 }
726 result += CodeCache::mark_for_deoptimization(mh());
727 if (result > 0) {
728 VM_Deoptimize op;
729 VMThread::execute(&op);
730 }
731 return result;
732 WB_END
733
734 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
735 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
736 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
737 MutexLockerEx mu(Compile_lock);
738 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
739 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
740 if (code == NULL) {
741 return JNI_FALSE;
742 }
743 return (code->is_alive() && !code->is_marked_for_deoptimization());
744 WB_END
745
746 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
747 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
748 return false;
749 }
750 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
751 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
752 MutexLockerEx mu(Compile_lock);
753 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
754 if (is_osr) {
755 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
756 } else {
757 return CompilationPolicy::can_be_compiled(mh, comp_level);
758 }
759 WB_END
760
761 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
762 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
763 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
764 MutexLockerEx mu(Compile_lock);
765 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
766 return mh->queued_for_compilation();
767 WB_END
768
769 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
770 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
771 return false; // Intrinsic is not available on a non-existent compilation level.
772 }
773 jmethodID method_id, compilation_context_id;
774 method_id = reflected_method_to_jmid(thread, env, method);
775 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
776 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
777
778 DirectiveSet* directive;
779 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
780 assert(comp != NULL, "compiler not available");
781 if (compilation_context != NULL) {
782 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
783 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
784 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
785 directive = DirectivesStack::getMatchingDirective(cch, comp);
786 } else {
787 // Calling with NULL matches default directive
788 directive = DirectivesStack::getDefaultDirective(comp);
789 }
790 bool result = comp->is_intrinsic_available(mh, directive);
791 DirectivesStack::release(directive);
792 return result;
793 WB_END
794
795 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
796 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
797 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
798 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
799 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
800 return (code != NULL ? code->comp_level() : CompLevel_none);
801 WB_END
802
803 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
804 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
805 CHECK_JNI_EXCEPTION(env);
806 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
807 if (is_osr) {
808 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
809 } else {
810 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
811 }
812 WB_END
813
814 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
815 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
816 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
817 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
818 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
819 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
820 WB_END
821
822 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
823 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
824 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
825 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
826 bool result = mh->dont_inline();
827 mh->set_dont_inline(value == JNI_TRUE);
828 return result;
829 WB_END
830
831 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
832 if (comp_level == CompLevel_any) {
833 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
834 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
835 } else {
836 return CompileBroker::queue_size(comp_level);
837 }
838 WB_END
839
840 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
841 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
842 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
843 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
844 bool result = mh->force_inline();
845 mh->set_force_inline(value == JNI_TRUE);
846 return result;
847 WB_END
848
849 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
850 // Screen for unavailable/bad comp level or null method
851 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) ||
852 CompileBroker::compiler(comp_level) == NULL) {
853 return false;
854 }
855 methodHandle mh(THREAD, method);
856 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
857 MutexLockerEx mu(Compile_lock);
858 return (mh->queued_for_compilation() || nm != NULL);
859 }
860
861 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
862 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
863 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
864 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
865 WB_END
866
867 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
868 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
869 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
870 WB_END
871
872 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
873 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
874 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
875
876 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
877 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
878 bool result = directive->PrintAssemblyOption;
879 DirectivesStack::release(directive);
880
881 return result;
882 WB_END
883
884 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
885 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
886 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
887
888 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
889
890 ResourceMark rm;
891 const char* error_msg = NULL;
892 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
893 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
894
895 if (m == NULL) {
896 assert(error_msg != NULL, "Always have an error message");
897 tty->print_cr("Got error: %s", error_msg);
898 return -1; // Pattern failed
899 }
900
901 // Pattern works - now check if it matches
902 int result;
903 if (m->match(mh, InlineMatcher::force_inline)) {
904 result = 2; // Force inline match
905 } else if (m->match(mh, InlineMatcher::dont_inline)) {
906 result = 1; // Dont inline match
907 } else {
908 result = 0; // No match
909 }
910 delete m;
911 return result;
912 WB_END
913
914 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
915 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
916 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
917
918 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
919
920 ResourceMark rm;
921 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
922
923 const char* error_msg = NULL;
924
925 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
926 if (m == NULL) {
927 assert(error_msg != NULL, "Must have error_msg");
928 tty->print_cr("Got error: %s", error_msg);
929 return -1;
930 }
931
932 // Pattern works - now check if it matches
933 int result = m->matches(mh);
934 delete m;
935 assert(result == 0 || result == 1, "Result out of range");
936 return result;
937 WB_END
938
939 static AlwaysFalseClosure always_false;
940
941 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
942 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
943 CHECK_JNI_EXCEPTION(env);
944 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
945 MutexLockerEx mu(Compile_lock);
946 MethodData* mdo = mh->method_data();
947 MethodCounters* mcs = mh->method_counters();
948
949 if (mdo != NULL) {
950 mdo->init();
951 ResourceMark rm;
952 int arg_count = mdo->method()->size_of_parameters();
953 for (int i = 0; i < arg_count; i++) {
954 mdo->set_arg_modified(i, 0);
955 }
956 MutexLockerEx mu(mdo->extra_data_lock());
957 mdo->clean_method_data(&always_false);
958 }
959
960 mh->clear_not_c1_compilable();
961 mh->clear_not_c2_compilable();
962 mh->clear_not_c2_osr_compilable();
963 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
964 if (mcs != NULL) {
965 mcs->backedge_counter()->init();
966 mcs->invocation_counter()->init();
967 mcs->set_interpreter_invocation_count(0);
968 mcs->set_interpreter_throwout_count(0);
969
970 #ifdef TIERED
971 mcs->set_rate(0.0F);
972 mh->set_prev_event_count(0);
973 mh->set_prev_time(0);
974 #endif
975 }
976 WB_END
977
978 template <typename T>
979 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
980 if (name == NULL) {
981 return false;
982 }
983 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
984 const char* flag_name = env->GetStringUTFChars(name, NULL);
985 CHECK_JNI_EXCEPTION_(env, false);
986 Flag::Error result = (*TAt)(flag_name, value, true, true);
987 env->ReleaseStringUTFChars(name, flag_name);
988 return (result == Flag::SUCCESS);
989 }
990
991 template <typename T>
992 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
993 if (name == NULL) {
994 return false;
995 }
996 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
997 const char* flag_name = env->GetStringUTFChars(name, NULL);
998 CHECK_JNI_EXCEPTION_(env, false);
999 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
1000 env->ReleaseStringUTFChars(name, flag_name);
1001 return (result == Flag::SUCCESS);
1002 }
1003
1004 template <typename T>
1005 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1006 ResourceMark rm(thread);
1007 jclass clazz = env->FindClass(name->as_C_string());
1008 CHECK_JNI_EXCEPTION_(env, NULL);
1009 jmethodID methodID = env->GetStaticMethodID(clazz,
1010 vmSymbols::valueOf_name()->as_C_string(),
1011 sig->as_C_string());
1012 CHECK_JNI_EXCEPTION_(env, NULL);
1013 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1014 CHECK_JNI_EXCEPTION_(env, NULL);
1015 return result;
1016 }
1017
1018 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1019 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1020 }
1021 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1022 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1023 }
1024 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1025 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1026 }
1027 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1028 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1029 }*/
1030 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1031 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1032 }
1033
1034 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1035 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1036 const char* flag_name = env->GetStringUTFChars(name, NULL);
1037 CHECK_JNI_EXCEPTION_(env, NULL);
1038 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1039 env->ReleaseStringUTFChars(name, flag_name);
1040 return result;
1041 }
1042
1043 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1044 Flag* flag = getVMFlag(thread, env, name);
1045 return (flag != NULL) && flag->is_constant_in_binary();
1046 WB_END
1047
1048 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1049 Flag* flag = getVMFlag(thread, env, name);
1050 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1051 WB_END
1052
1053 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1054 bool result;
1055 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1056 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1057 return booleanBox(thread, env, result);
1058 }
1059 return NULL;
1060 WB_END
1061
1062 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1063 int result;
1064 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1065 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1066 return longBox(thread, env, result);
1067 }
1068 return NULL;
1069 WB_END
1070
1071 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1072 uint result;
1073 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1074 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1075 return longBox(thread, env, result);
1076 }
1077 return NULL;
1078 WB_END
1079
1080 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1081 intx result;
1082 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1083 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1084 return longBox(thread, env, result);
1085 }
1086 return NULL;
1087 WB_END
1088
1089 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1090 uintx result;
1091 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1092 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1093 return longBox(thread, env, result);
1094 }
1095 return NULL;
1096 WB_END
1097
1098 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1099 uint64_t result;
1100 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1101 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1102 return longBox(thread, env, result);
1103 }
1104 return NULL;
1105 WB_END
1106
1107 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1108 uintx result;
1109 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1110 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1111 return longBox(thread, env, result);
1112 }
1113 return NULL;
1114 WB_END
1115
1116 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1117 double result;
1118 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1119 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1120 return doubleBox(thread, env, result);
1121 }
1122 return NULL;
1123 WB_END
1124
1125 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1126 ccstr ccstrResult;
1127 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1128 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1129 jstring result = env->NewStringUTF(ccstrResult);
1130 CHECK_JNI_EXCEPTION_(env, NULL);
1131 return result;
1132 }
1133 return NULL;
1134 WB_END
1135
1136 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1137 bool result = value == JNI_TRUE ? true : false;
1138 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1139 WB_END
1140
1141 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1142 int result = value;
1143 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1144 WB_END
1145
1146 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1147 uint result = value;
1148 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1149 WB_END
1150
1151 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1152 intx result = value;
1153 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1154 WB_END
1155
1156 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1157 uintx result = value;
1158 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1159 WB_END
1160
1161 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1162 uint64_t result = value;
1163 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1164 WB_END
1165
1166 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1167 size_t result = value;
1168 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1169 WB_END
1170
1171 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1172 double result = value;
1173 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1174 WB_END
1175
1176 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1177 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1178 const char* ccstrValue;
1179 if (value == NULL) {
1180 ccstrValue = NULL;
1181 }
1182 else {
1183 ccstrValue = env->GetStringUTFChars(value, NULL);
1184 CHECK_JNI_EXCEPTION(env);
1185 }
1186 ccstr ccstrResult = ccstrValue;
1187 bool needFree;
1188 {
1189 ThreadInVMfromNative ttvfn(thread); // back to VM
1190 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1191 }
1192 if (value != NULL) {
1193 env->ReleaseStringUTFChars(value, ccstrValue);
1194 }
1195 if (needFree) {
1196 FREE_C_HEAP_ARRAY(char, ccstrResult);
1197 }
1198 WB_END
1199
1200 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1201 WhiteBox::compilation_locked = true;
1202 WB_END
1203
1204 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1205 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1206 WhiteBox::compilation_locked = false;
1207 mo.notify_all();
1208 WB_END
1209
1210 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1211 // Force a code cache sweep and block until it finished
1212 NMethodSweeper::force_sweep();
1213 WB_END
1214
1215 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1216 ResourceMark rm(THREAD);
1217 int len;
1218 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1219 return (StringTable::lookup(name, len) != NULL);
1220 WB_END
1221
1222 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1223 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1224 Universe::heap()->collect(GCCause::_wb_full_gc);
1225 #if INCLUDE_ALL_GCS
1226 if (UseG1GC) {
1227 // Needs to be cleared explicitly for G1
1228 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1229 }
1230 #endif // INCLUDE_ALL_GCS
1231 WB_END
1232
1233 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1234 Universe::heap()->collect(GCCause::_wb_young_gc);
1235 WB_END
1236
1237 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1238 // static+volatile in order to force the read to happen
1239 // (not be eliminated by the compiler)
1240 static char c;
1241 static volatile char* p;
1242
1243 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1244 if (p == NULL) {
1245 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1246 }
1247
1248 c = *p;
1249 WB_END
1250
1251 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1252 const char* features = VM_Version::features_string();
1253 ThreadToNativeFromVM ttn(thread);
1254 jstring features_string = env->NewStringUTF(features);
1255
1256 CHECK_JNI_EXCEPTION_(env, NULL);
1257
1258 return features_string;
1259 WB_END
1260
1261 int WhiteBox::get_blob_type(const CodeBlob* code) {
1262 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1263 if (code->is_aot()) {
1264 return -1;
1265 }
1266 return CodeCache::get_code_heap(code)->code_blob_type();
1267 }
1268
1269 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1270 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1271 return CodeCache::get_code_heap(blob_type);
1272 }
1273
1274 struct CodeBlobStub {
1275 CodeBlobStub(const CodeBlob* blob) :
1276 name(os::strdup(blob->name())),
1277 size(blob->size()),
1278 blob_type(WhiteBox::get_blob_type(blob)),
1279 address((jlong) blob) { }
1280 ~CodeBlobStub() { os::free((void*) name); }
1281 const char* const name;
1282 const jint size;
1283 const jint blob_type;
1284 const jlong address;
1285 };
1286
1287 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1288 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1289 CHECK_JNI_EXCEPTION_(env, NULL);
1290 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1291
1292 jstring name = env->NewStringUTF(cb->name);
1293 CHECK_JNI_EXCEPTION_(env, NULL);
1294 env->SetObjectArrayElement(result, 0, name);
1295
1296 jobject obj = integerBox(thread, env, cb->size);
1297 CHECK_JNI_EXCEPTION_(env, NULL);
1298 env->SetObjectArrayElement(result, 1, obj);
1299
1300 obj = integerBox(thread, env, cb->blob_type);
1301 CHECK_JNI_EXCEPTION_(env, NULL);
1302 env->SetObjectArrayElement(result, 2, obj);
1303
1304 obj = longBox(thread, env, cb->address);
1305 CHECK_JNI_EXCEPTION_(env, NULL);
1306 env->SetObjectArrayElement(result, 3, obj);
1307
1308 return result;
1309 }
1310
1311 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1312 ResourceMark rm(THREAD);
1313 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1314 CHECK_JNI_EXCEPTION_(env, NULL);
1315 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1316 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1317 jobjectArray result = NULL;
1318 if (code == NULL) {
1319 return result;
1320 }
1321 int comp_level = code->comp_level();
1322 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1323
1324 ThreadToNativeFromVM ttn(thread);
1325 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1326 CHECK_JNI_EXCEPTION_(env, NULL);
1327 result = env->NewObjectArray(5, clazz, NULL);
1328 if (result == NULL) {
1329 return result;
1330 }
1331
1332 CodeBlobStub stub(code);
1333 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1334 CHECK_JNI_EXCEPTION_(env, NULL);
1335 env->SetObjectArrayElement(result, 0, codeBlob);
1336
1337 jobject level = integerBox(thread, env, comp_level);
1338 CHECK_JNI_EXCEPTION_(env, NULL);
1339 env->SetObjectArrayElement(result, 1, level);
1340
1341 jbyteArray insts = env->NewByteArray(insts_size);
1342 CHECK_JNI_EXCEPTION_(env, NULL);
1343 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1344 env->SetObjectArrayElement(result, 2, insts);
1345
1346 jobject id = integerBox(thread, env, code->compile_id());
1347 CHECK_JNI_EXCEPTION_(env, NULL);
1348 env->SetObjectArrayElement(result, 3, id);
1349
1350 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1351 CHECK_JNI_EXCEPTION_(env, NULL);
1352 env->SetObjectArrayElement(result, 4, entry_point);
1353
1354 return result;
1355 WB_END
1356
1357 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1358 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1359 BufferBlob* blob;
1360 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1361 if (full_size < size) {
1362 full_size += align_up(size - full_size, oopSize);
1363 }
1364 {
1365 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1366 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1367 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1368 }
1369 // Track memory usage statistic after releasing CodeCache_lock
1370 MemoryService::track_code_cache_memory_usage();
1371 return blob;
1372 }
1373
1374 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1375 if (size < 0) {
1376 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1377 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1378 }
1379 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1380 WB_END
1381
1382 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1383 if (addr == 0) {
1384 return;
1385 }
1386 BufferBlob::free((BufferBlob*) addr);
1387 WB_END
1388
1389 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1390 ResourceMark rm;
1391 GrowableArray<CodeBlobStub*> blobs;
1392 {
1393 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1394 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1395 if (heap == NULL) {
1396 return NULL;
1397 }
1398 for (CodeBlob* cb = (CodeBlob*) heap->first();
1399 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1400 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1401 new (stub) CodeBlobStub(cb);
1402 blobs.append(stub);
1403 }
1404 }
1405 if (blobs.length() == 0) {
1406 return NULL;
1407 }
1408 ThreadToNativeFromVM ttn(thread);
1409 jobjectArray result = NULL;
1410 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1411 CHECK_JNI_EXCEPTION_(env, NULL);
1412 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1413 CHECK_JNI_EXCEPTION_(env, NULL);
1414 if (result == NULL) {
1415 return result;
1416 }
1417 int i = 0;
1418 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1419 it != blobs.end(); ++it) {
1420 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1421 CHECK_JNI_EXCEPTION_(env, NULL);
1422 env->SetObjectArrayElement(result, i, obj);
1423 CHECK_JNI_EXCEPTION_(env, NULL);
1424 ++i;
1425 }
1426 return result;
1427 WB_END
1428
1429 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1430 return CompileBroker::get_compilation_activity_mode();
1431 WB_END
1432
1433 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1434 if (addr == 0) {
1435 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1436 "WB_GetCodeBlob: addr is null");
1437 }
1438 ThreadToNativeFromVM ttn(thread);
1439 CodeBlobStub stub((CodeBlob*) addr);
1440 return codeBlob2objectArray(thread, env, &stub);
1441 WB_END
1442
1443 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1444 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1445 CHECK_JNI_EXCEPTION_(env, 0);
1446 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1447 return (jlong) mh->method_data();
1448 WB_END
1449
1450 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1451 return (jlong) Thread::current()->stack_size();
1452 WB_END
1453
1454 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1455 JavaThread* t = JavaThread::current();
1456 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1457 WB_END
1458
1459
1460 int WhiteBox::array_bytes_to_length(size_t bytes) {
1461 return Array<u1>::bytes_to_length(bytes);
1462 }
1463
1464 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1465 if (size < 0) {
1466 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1467 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1468 }
1469
1470 oop class_loader_oop = JNIHandles::resolve(class_loader);
1471 ClassLoaderData* cld = class_loader_oop != NULL
1472 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1473 : ClassLoaderData::the_null_class_loader_data();
1474
1475 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1476
1477 return (jlong)(uintptr_t)metadata;
1478 WB_END
1479
1480 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1481 oop class_loader_oop = JNIHandles::resolve(class_loader);
1482 ClassLoaderData* cld = class_loader_oop != NULL
1483 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1484 : ClassLoaderData::the_null_class_loader_data();
1485
1486 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1487 WB_END
1488
1489 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1490 jstring version, jstring location, jobjectArray packages))
1491 ResourceMark rm(THREAD);
1492
1493 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1494 objArrayHandle packages_h(THREAD, packages_oop);
1495 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1496
1497 char** pkgs = NULL;
1498 if (num_packages > 0) {
1499 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1500 for (int x = 0; x < num_packages; x++) {
1501 oop pkg_str = packages_h->obj_at(x);
1502 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1503 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1504 err_msg("Bad package name"));
1505 }
1506 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1507 }
1508 }
1509 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1510 WB_END
1511
1512 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1513 ResourceMark rm(THREAD);
1514 char* package_name = NULL;
1515 if (package != NULL) {
1516 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1517 }
1518 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1519 WB_END
1520
1521 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1522 ResourceMark rm(THREAD);
1523 char* package_name = NULL;
1524 if (package != NULL) {
1525 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1526 }
1527 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1528 WB_END
1529
1530 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1531 ResourceMark rm(THREAD);
1532 char* package_name = NULL;
1533 if (package != NULL) {
1534 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1535 }
1536 Modules::add_module_exports(module, package_name, NULL, CHECK);
1537 WB_END
1538
1539 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1540 Modules::add_reads_module(from_module, source_module, CHECK);
1541 WB_END
1542
1543 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1544 if (inc < 0) {
1545 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1546 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1547 }
1548
1549 jlong max_size_t = (jlong) ((size_t) -1);
1550 if (inc > max_size_t) {
1551 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1552 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1553 }
1554
1555 size_t new_cap_until_GC = 0;
1556 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1557 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1558 if (!success) {
1559 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1560 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1561 "due to contention with another thread");
1562 }
1563 return (jlong) new_cap_until_GC;
1564 WB_END
1565
1566 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1567 return (jlong) MetaspaceGC::capacity_until_GC();
1568 WB_END
1569
1570 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1571 return MetaspaceGC::should_concurrent_collect();
1572 WB_END
1573
1574 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1575 return (jlong)Metaspace::reserve_alignment();
1576 WB_END
1577
1578 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1579 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1580 Monitor::_safepoint_check_always :
1581 Monitor::_safepoint_check_never;
1582 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1583 attemptedNoSafepointValue == JNI_TRUE);
1584 WB_END
1585
1586 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1587 oop obj_oop = JNIHandles::resolve(obj);
1588 return (jboolean) obj_oop->mark()->has_monitor();
1589 WB_END
1590
1591 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1592 VM_ForceSafepoint force_safepoint_op;
1593 VMThread::execute(&force_safepoint_op);
1594 WB_END
1595
1596 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1597 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1598 return (jlong) ik->constants();
1599 WB_END
1600
1601 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1602 return ConstantPool::CPCACHE_INDEX_TAG;
1603 WB_END
1604
1605 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1606 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1607 ConstantPool* cp = ik->constants();
1608 if (cp->cache() == NULL) {
1609 return -1;
1610 }
1611 return cp->cache()->length();
1612 WB_END
1613
1614 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1615 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1616 ConstantPool* cp = ik->constants();
1617 if (cp->cache() == NULL) {
1618 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1619 }
1620 jint cpci = index;
1621 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1622 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1623 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1624 }
1625 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1626 return cpi;
1627 WB_END
1628
1629 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1630 return ConstantPool::encode_invokedynamic_index(index);
1631 WB_END
1632
1633 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1634 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1635 VMThread::execute(&clear_ics);
1636 WB_END
1637
1638 template <typename T>
1639 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1640 assert(value != NULL, "sanity");
1641 if (method == NULL || name == NULL) {
1642 return false;
1643 }
1644 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1645 CHECK_JNI_EXCEPTION_(env, false);
1646 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1647 // can't be in VM when we call JNI
1648 ThreadToNativeFromVM ttnfv(thread);
1649 const char* flag_name = env->GetStringUTFChars(name, NULL);
1650 CHECK_JNI_EXCEPTION_(env, false);
1651 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1652 env->ReleaseStringUTFChars(name, flag_name);
1653 return result;
1654 }
1655
1656 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1657 bool result;
1658 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1659 // can't be in VM when we call JNI
1660 ThreadToNativeFromVM ttnfv(thread);
1661 return booleanBox(thread, env, result);
1662 }
1663 return NULL;
1664 WB_END
1665
1666 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1667 intx result;
1668 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1669 // can't be in VM when we call JNI
1670 ThreadToNativeFromVM ttnfv(thread);
1671 return longBox(thread, env, result);
1672 }
1673 return NULL;
1674 WB_END
1675
1676 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1677 uintx result;
1678 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1679 // can't be in VM when we call JNI
1680 ThreadToNativeFromVM ttnfv(thread);
1681 return longBox(thread, env, result);
1682 }
1683 return NULL;
1684 WB_END
1685
1686 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1687 double result;
1688 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1689 // can't be in VM when we call JNI
1690 ThreadToNativeFromVM ttnfv(thread);
1691 return doubleBox(thread, env, result);
1692 }
1693 return NULL;
1694 WB_END
1695
1696 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1697 ccstr ccstrResult;
1698 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1699 // can't be in VM when we call JNI
1700 ThreadToNativeFromVM ttnfv(thread);
1701 jstring result = env->NewStringUTF(ccstrResult);
1702 CHECK_JNI_EXCEPTION_(env, NULL);
1703 return result;
1704 }
1705 return NULL;
1706 WB_END
1707
1708 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1709 oop obj_oop = JNIHandles::resolve(obj);
1710 return oopDesc::is_archive_object(obj_oop);
1711 WB_END
1712
1713 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1714 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1715 WB_END
1716
1717 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1718 return !StringTable::shared_string_mapped();
1719 WB_END
1720
1721 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1722 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1723 if (k->is_instance_klass()) {
1724 InstanceKlass *ik = InstanceKlass::cast(k);
1725 ConstantPool *cp = ik->constants();
1726 objArrayOop refs = cp->resolved_references();
1727 return (jobject)JNIHandles::make_local(env, refs);
1728 } else {
1729 return NULL;
1730 }
1731 WB_END
1732
1733 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1734 return MetaspaceShared::open_archive_heap_region_mapped();
1735 WB_END
1736
1737 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1738 #if INCLUDE_CDS
1739 # ifdef _LP64
1740 if (!UseCompressedOops || !UseCompressedClassPointers) {
1741 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1742 return false;
1743 }
1744 # endif // _LP64
1745 return true;
1746 #else
1747 return false;
1748 #endif // INCLUDE_CDS
1749 WB_END
1750
1751 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1752 return MetaspaceShared::is_heap_object_archiving_allowed();
1753 WB_END
1754
1755
1756 #if INCLUDE_CDS
1757
1758 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1759 ResourceMark rm;
1760 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1761 int result = CDSOffsets::find_offset(c_name);
1762 return (jint)result;
1763 WB_END
1764
1765 #endif // INCLUDE_CDS
1766
1767 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1768 class TraceSelfClosure : public ThreadClosure {
1769 jint _num_threads_completed;
1770
1771 void do_thread(Thread* th) {
1772 assert(th->is_Java_thread(), "sanity");
1773 JavaThread* jt = (JavaThread*)th;
1774 ResourceMark rm;
1775
1776 jt->print_on(tty);
1777 jt->print_stack_on(tty);
1778 tty->cr();
1779 Atomic::inc(&_num_threads_completed);
1780 }
1781
1782 public:
1783 TraceSelfClosure() : _num_threads_completed(0) {}
1784
1785 jint num_threads_completed() const { return _num_threads_completed; }
1786 };
1787 TraceSelfClosure tsc;
1788
1789 if (all_threads) {
1790 Handshake::execute(&tsc);
1791 } else {
1792 oop thread_oop = JNIHandles::resolve(thread_handle);
1793 if (thread_oop != NULL) {
1794 JavaThread* target = java_lang_Thread::thread(thread_oop);
1795 Handshake::execute(&tsc, target);
1796 }
1797 }
1798 return tsc.num_threads_completed();
1799 WB_END
1800
1801 //Some convenience methods to deal with objects from java
1802 int WhiteBox::offset_for_field(const char* field_name, oop object,
1803 Symbol* signature_symbol) {
1804 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1805 Thread* THREAD = Thread::current();
1806
1807 //Get the class of our object
1808 Klass* arg_klass = object->klass();
1809 //Turn it into an instance-klass
1810 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1811
1812 //Create symbols to look for in the class
1813 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1814 THREAD);
1815
1816 //To be filled in with an offset of the field we're looking for
1817 fieldDescriptor fd;
1818
1819 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1820 if (res == NULL) {
1821 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1822 name_symbol->as_C_string());
1823 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1824 }
1825
1826 //fetch the field at the offset we've found
1827 int dest_offset = fd.offset();
1828
1829 return dest_offset;
1830 }
1831
1832
1833 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1834 int offset = offset_for_field(field_name, object,
1835 vmSymbols::string_signature());
1836 oop string = object->obj_field(offset);
1837 if (string == NULL) {
1838 return NULL;
1839 }
1840 const char* ret = java_lang_String::as_utf8_string(string);
1841 return ret;
1842 }
1843
1844 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1845 int offset =
1846 offset_for_field(field_name, object, vmSymbols::bool_signature());
1847 bool ret = (object->bool_field(offset) == JNI_TRUE);
1848 return ret;
1849 }
1850
1851 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1852 ResourceMark rm;
1853 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1854
1855 // one by one registration natives for exception catching
1856 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1857 CHECK_JNI_EXCEPTION(env);
1858 for (int i = 0, n = method_count; i < n; ++i) {
1859 // Skip dummy entries
1860 if (method_array[i].fnPtr == NULL) continue;
1861 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1862 jthrowable throwable_obj = env->ExceptionOccurred();
1863 if (throwable_obj != NULL) {
1864 env->ExceptionClear();
1865 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1866 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1867 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1868 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1869 method_array[i].name, method_array[i].signature);
1870 }
1871 } else {
1872 // Registration failed unexpectedly.
1873 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1874 method_array[i].name, method_array[i].signature);
1875 env->UnregisterNatives(wbclass);
1876 break;
1877 }
1878 }
1879 }
1880 }
1881
1882 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1883 // can't be in VM when we call JNI
1884 ThreadToNativeFromVM ttnfv(thread);
1885 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1886 CHECK_JNI_EXCEPTION_(env, 0);
1887 int ret;
1888 {
1889 ThreadInVMfromNative ttvfn(thread); // back to VM
1890 ret = DirectivesParser::parse_string(dir, tty);
1891 }
1892 env->ReleaseStringUTFChars(compDirect, dir);
1893 // -1 for error parsing directive. Return 0 as number of directives added.
1894 if (ret == -1) {
1895 ret = 0;
1896 }
1897 return (jint) ret;
1898 WB_END
1899
1900 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1901 DirectivesStack::pop(count);
1902 WB_END
1903
1904 // Checks that the library libfile has the noexecstack bit set.
1905 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1906 jboolean ret = false;
1907 #ifdef LINUX
1908 // Can't be in VM when we call JNI.
1909 ThreadToNativeFromVM ttnfv(thread);
1910 const char* lf = env->GetStringUTFChars(libfile, NULL);
1911 CHECK_JNI_EXCEPTION_(env, 0);
1912 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1913 env->ReleaseStringUTFChars(libfile, lf);
1914 #endif
1915 return ret;
1916 WB_END
1917
1918 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1919 LINUX_ONLY(return OSContainer::is_containerized();)
1920 return false;
1921 WB_END
1922
1923 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1924 os::print_os_info(tty);
1925 WB_END
1926
1927 // Elf decoder
1928 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1929 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1930 ElfFile::_do_not_cache_elf_section = true;
1931 #endif
1932 WB_END
1933
1934
1935 #define CC (char*)
1936
1937 static JNINativeMethod methods[] = {
1938 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1939 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1940 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1941 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1942 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1943 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1944 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1945 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1946 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1947 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1948 {CC"parseCommandLine0",
1949 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1950 (void*) &WB_ParseCommandLine
1951 },
1952 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1953 (void*)&WB_AddToBootstrapClassLoaderSearch},
1954 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1955 (void*)&WB_AddToSystemClassLoaderSearch},
1956 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1957 (void*)&WB_GetCompressedOopsMaxHeapSize},
1958 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1959 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1960 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1961 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1962 #if INCLUDE_CDS
1963 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1964 #endif
1965 #if INCLUDE_ALL_GCS
1966 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1967 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1968 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1969 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1970 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1971 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1972 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1973 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1974 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1975 (void*)&WB_G1AuxiliaryMemoryUsage },
1976 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1977 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1978 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1979 #endif // INCLUDE_ALL_GCS
1980 #if INCLUDE_NMT
1981 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1982 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1983 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1984 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1985 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
1986 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1987 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1988 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1989 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1990 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1991 #endif // INCLUDE_NMT
1992 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1993 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1994 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1995 (void*)&WB_DeoptimizeMethod },
1996 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1997 (void*)&WB_IsMethodCompiled },
1998 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1999 (void*)&WB_IsMethodCompilable},
2000 {CC"isMethodQueuedForCompilation0",
2001 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2002 {CC"isIntrinsicAvailable0",
2003 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2004 (void*)&WB_IsIntrinsicAvailable},
2005 {CC"makeMethodNotCompilable0",
2006 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2007 {CC"testSetDontInlineMethod0",
2008 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2009 {CC"getMethodCompilationLevel0",
2010 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2011 {CC"getMethodEntryBci0",
2012 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2013 {CC"getCompileQueueSize",
2014 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2015 {CC"testSetForceInlineMethod0",
2016 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2017 {CC"enqueueMethodForCompilation0",
2018 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2019 {CC"enqueueInitializerForCompilation0",
2020 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2021 {CC"clearMethodState0",
2022 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2023 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2024 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2025 {CC"matchesMethod",
2026 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2027 (void*)&WB_MatchesMethod},
2028 {CC"matchesInline",
2029 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2030 (void*)&WB_MatchesInline},
2031 {CC"shouldPrintAssembly",
2032 CC"(Ljava/lang/reflect/Executable;I)Z",
2033 (void*)&WB_ShouldPrintAssembly},
2034
2035 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2036 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2037 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2038 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2039 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2040 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2041 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2042 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2043 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2044 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2045 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2046 (void*)&WB_SetStringVMFlag},
2047 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2048 (void*)&WB_GetBooleanVMFlag},
2049 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2050 (void*)&WB_GetIntVMFlag},
2051 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2052 (void*)&WB_GetUintVMFlag},
2053 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2054 (void*)&WB_GetIntxVMFlag},
2055 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2056 (void*)&WB_GetUintxVMFlag},
2057 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2058 (void*)&WB_GetUint64VMFlag},
2059 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2060 (void*)&WB_GetSizeTVMFlag},
2061 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2062 (void*)&WB_GetDoubleVMFlag},
2063 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2064 (void*)&WB_GetStringVMFlag},
2065 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2066 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2067 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2068 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2069 {CC"allocateMetaspace",
2070 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2071 {CC"freeMetaspace",
2072 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2073 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2074 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2075 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2076 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2077 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2078 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2079 (void*)&WB_GetNMethod },
2080 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2081 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2082 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2083 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2084 {CC"getCompilationActivityMode",
2085 CC"()I", (void*)&WB_GetCompilationActivityMode},
2086 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2087 (void*)&WB_GetMethodData },
2088 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2089 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2090 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2091 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2092 (void*)&WB_DefineModule },
2093 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2094 (void*)&WB_AddModuleExports },
2095 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2096 (void*)&WB_AddReadsModule },
2097 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2098 (void*)&WB_AddModuleExportsToAllUnnamed },
2099 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2100 (void*)&WB_AddModuleExportsToAll },
2101 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2102 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2103 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2104 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2105 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2106 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2107 {CC"remapInstructionOperandFromCPCache0",
2108 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2109 {CC"encodeConstantPoolIndyIndex0",
2110 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2111 {CC"getMethodBooleanOption",
2112 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2113 (void*)&WB_GetMethodBooleaneOption},
2114 {CC"getMethodIntxOption",
2115 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2116 (void*)&WB_GetMethodIntxOption},
2117 {CC"getMethodUintxOption",
2118 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2119 (void*)&WB_GetMethodUintxOption},
2120 {CC"getMethodDoubleOption",
2121 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2122 (void*)&WB_GetMethodDoubleOption},
2123 {CC"getMethodStringOption",
2124 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2125 (void*)&WB_GetMethodStringOption},
2126 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2127 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2128 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2129 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2130 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2131 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2132 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2133
2134 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2135 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2136 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2137 (void*)&WB_AddCompilerDirective },
2138 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2139 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2140 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2141 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2142 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2143 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2144 (void*)&WB_GetConcurrentGCPhases},
2145 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2146 (void*)&WB_RequestConcurrentGCPhase},
2147 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2148 (void*)&WB_CheckLibSpecifiesNoexecstack},
2149 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2150 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2151 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2152 };
2153
2154
2155 #undef CC
2156
2157 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2158 {
2159 if (WhiteBoxAPI) {
2160 // Make sure that wbclass is loaded by the null classloader
2161 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2162 Handle loader(THREAD, ik->class_loader());
2163 if (loader.is_null()) {
2164 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2165 WhiteBox::set_used();
2166 }
2167 }
2168 }
2169 JVM_END