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 "prims/wbtestmethods/parserTests.hpp"
48 #include "prims/whitebox.hpp"
49 #include "runtime/arguments.hpp"
50 #include "runtime/compilationPolicy.hpp"
51 #include "runtime/deoptimization.hpp"
52 #include "runtime/handshake.hpp"
53 #include "runtime/interfaceSupport.hpp"
54 #include "runtime/javaCalls.hpp"
55 #include "runtime/os.hpp"
56 #include "runtime/sweeper.hpp"
57 #include "runtime/thread.hpp"
58 #include "runtime/threadSMR.hpp"
59 #include "runtime/vm_version.hpp"
60 #include "utilities/align.hpp"
61 #include "utilities/debug.hpp"
62 #include "utilities/exceptions.hpp"
63 #include "utilities/macros.hpp"
64 #if INCLUDE_CDS
65 #include "prims/cdsoffsets.hpp"
66 #endif // INCLUDE_CDS
67 #if INCLUDE_ALL_GCS
68 #include "gc/g1/concurrentMarkThread.hpp"
69 #include "gc/g1/g1CollectedHeap.inline.hpp"
70 #include "gc/g1/g1ConcurrentMark.hpp"
71 #include "gc/g1/heapRegionRemSet.hpp"
72 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
73 #include "gc/parallel/adjoiningGenerations.hpp"
74 #endif // INCLUDE_ALL_GCS
75 #if INCLUDE_NMT
76 #include "services/mallocSiteTable.hpp"
77 #include "services/memTracker.hpp"
78 #include "utilities/nativeCallStack.hpp"
79 #endif // INCLUDE_NMT
80
81 #ifdef LINUX
82 #include "utilities/elfFile.hpp"
83 #include "osContainer_linux.hpp"
84 #endif
85
86 #define SIZE_T_MAX_VALUE ((size_t) -1)
87
88 bool WhiteBox::_used = false;
89 volatile bool WhiteBox::compilation_locked = false;
90
91 class VM_WhiteBoxOperation : public VM_Operation {
92 public:
93 VM_WhiteBoxOperation() { }
94 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
95 bool allow_nested_vm_operations() const { return true; }
96 };
97
98
99 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
100 return (jlong)(void*)JNIHandles::resolve(obj);
101 WB_END
102
103 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
104 return heapOopSize;
105 WB_END
106
107 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
108 return os::vm_page_size();
109 WB_END
110
111 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
112 return os::vm_allocation_granularity();
113 WB_END
114
115 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
116 return os::large_page_size();
117 WB_END
118
119 class WBIsKlassAliveClosure : public KlassClosure {
120 Symbol* _name;
121 bool _found;
122 public:
123 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
124
125 void do_klass(Klass* k) {
126 if (_found) return;
127 Symbol* ksym = k->name();
128 if (ksym->fast_compare(_name) == 0) {
129 _found = true;
130 }
131 }
132
133 bool found() const {
134 return _found;
135 }
136 };
137
138 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
139 oop h_name = JNIHandles::resolve(name);
140 if (h_name == NULL) return false;
141 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
142 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
143
144 WBIsKlassAliveClosure closure(sym);
145 ClassLoaderDataGraph::classes_do(&closure);
146
147 return closure.found();
148 WB_END
149
150 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
151 #if INCLUDE_JVMTI
152 ResourceMark rm;
153 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
154 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
155 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
156 assert(err == JVMTI_ERROR_NONE, "must not fail");
157 #endif
158 }
159 WB_END
160
161 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
162 #if INCLUDE_JVMTI
163 ResourceMark rm;
164 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
165 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
166 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
167 assert(err == JVMTI_ERROR_NONE, "must not fail");
168 #endif
169 }
170 WB_END
171
172
173 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
174 return (jlong)Arguments::max_heap_for_compressed_oops();
175 }
176 WB_END
177
178 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
179 CollectorPolicy * p = Universe::heap()->collector_policy();
180 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
181 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
182 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
183 p->space_alignment(), p->heap_alignment());
184 }
185 WB_END
186
187 #ifndef PRODUCT
188 // Forward declaration
189 void TestReservedSpace_test();
190 void TestReserveMemorySpecial_test();
191 void TestVirtualSpace_test();
192 void TestMetaspaceAux_test();
193 #endif
194
195 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
196 #ifndef PRODUCT
197 TestReservedSpace_test();
198 TestReserveMemorySpecial_test();
199 TestVirtualSpace_test();
200 TestMetaspaceAux_test();
201 #endif
202 WB_END
203
204 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
205 size_t granularity = os::vm_allocation_granularity();
206 ReservedHeapSpace rhs(100 * granularity, granularity, false);
207 VirtualSpace vs;
208 vs.initialize(rhs, 50 * granularity);
209
210 // Check if constraints are complied
211 if (!( UseCompressedOops && rhs.base() != NULL &&
212 Universe::narrow_oop_base() != NULL &&
213 Universe::narrow_oop_use_implicit_null_checks() )) {
214 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
215 "\tUseCompressedOops is %d\n"
216 "\trhs.base() is " PTR_FORMAT "\n"
217 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
218 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
219 UseCompressedOops,
220 p2i(rhs.base()),
221 p2i(Universe::narrow_oop_base()),
222 Universe::narrow_oop_use_implicit_null_checks());
223 return;
224 }
225 tty->print_cr("Reading from no access area... ");
226 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
227 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
228 WB_END
229
230 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
231 size_t magnitude, size_t iterations) {
232 size_t granularity = os::vm_allocation_granularity();
233 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
234 VirtualSpace vs;
235 if (!vs.initialize(rhs, 0)) {
236 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
237 return 3;
238 }
239
240 int seed = os::random();
241 tty->print_cr("Random seed is %d", seed);
242 os::init_random(seed);
243
244 for (size_t i = 0; i < iterations; i++) {
245
246 // Whether we will shrink or grow
247 bool shrink = os::random() % 2L == 0;
248
249 // Get random delta to resize virtual space
250 size_t delta = (size_t)os::random() % magnitude;
251
252 // If we are about to shrink virtual space below zero, then expand instead
253 if (shrink && vs.committed_size() < delta) {
254 shrink = false;
255 }
256
257 // Resizing by delta
258 if (shrink) {
259 vs.shrink_by(delta);
260 } else {
261 // If expanding fails expand_by will silently return false
262 vs.expand_by(delta, true);
263 }
264 }
265 return 0;
266 }
267
268 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
269 jlong reserved_space_size, jlong magnitude, jlong iterations))
270 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
271 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
272 iterations);
273 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
274 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
275 return 1;
276 }
277
278 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
279 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
280 if (sizeof(size_t) < sizeof(jlong)) {
281 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
282 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
283 || iterations > size_t_max_value) {
284 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
285 return 2;
286 }
287 }
288
289 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
290 (size_t) magnitude, (size_t) iterations);
291 WB_END
292
293 static const jint serial_code = 1;
294 static const jint parallel_code = 2;
295 static const jint cms_code = 4;
296 static const jint g1_code = 8;
297
298 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
299 if (UseSerialGC) {
300 return serial_code;
301 } else if (UseParallelGC || UseParallelOldGC) {
302 return parallel_code;
303 } if (UseConcMarkSweepGC) {
304 return cms_code;
305 } else if (UseG1GC) {
306 return g1_code;
307 }
308 ShouldNotReachHere();
309 return 0;
310 WB_END
311
312 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
313 #if INCLUDE_ALL_GCS
314 return serial_code | parallel_code | cms_code | g1_code;
315 #else
316 return serial_code;
317 #endif // INCLUDE_ALL_GCS
318 WB_END
319
320 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
321 if (UseSerialGC) {
322 return FLAG_IS_ERGO(UseSerialGC);
323 } else if (UseParallelGC) {
324 return FLAG_IS_ERGO(UseParallelGC);
325 } else if (UseParallelOldGC) {
326 return FLAG_IS_ERGO(UseParallelOldGC);
327 } else if (UseConcMarkSweepGC) {
328 return FLAG_IS_ERGO(UseConcMarkSweepGC);
329 } else if (UseG1GC) {
330 return FLAG_IS_ERGO(UseG1GC);
331 }
332 ShouldNotReachHere();
333 return false;
334 WB_END
335
336 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
337 oop p = JNIHandles::resolve(obj);
338 #if INCLUDE_ALL_GCS
339 if (UseG1GC) {
340 G1CollectedHeap* g1 = G1CollectedHeap::heap();
341 const HeapRegion* hr = g1->heap_region_containing(p);
342 if (hr == NULL) {
343 return false;
344 }
345 return !(hr->is_young());
346 } else if (UseParallelGC) {
347 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
348 return !psh->is_in_young(p);
349 }
350 #endif // INCLUDE_ALL_GCS
351 GenCollectedHeap* gch = GenCollectedHeap::heap();
352 return !gch->is_in_young(p);
353 WB_END
354
355 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
356 oop p = JNIHandles::resolve(obj);
357 return p->size() * HeapWordSize;
358 WB_END
359
360 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
361 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
362 return (jlong)alignment;
363 WB_END
364
365 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
366 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
367 return (jlong)alignment;
368 WB_END
369
370 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
371 return Universe::heap()->supports_concurrent_phase_control();
372 WB_END
373
374 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
375 const char* const* phases = Universe::heap()->concurrent_phases();
376 jint nphases = 0;
377 for ( ; phases[nphases] != NULL; ++nphases) ;
378
379 ResourceMark rm(thread);
380 ThreadToNativeFromVM ttn(thread);
381 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
382 CHECK_JNI_EXCEPTION_(env, NULL);
383
384 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
385 CHECK_JNI_EXCEPTION_(env, NULL);
386
387 // If push fails, return with pending exception.
388 if (env->PushLocalFrame(nphases) < 0) return NULL;
389 for (jint i = 0; i < nphases; ++i) {
390 jstring phase = env->NewStringUTF(phases[i]);
391 CHECK_JNI_EXCEPTION_(env, NULL);
392 env->SetObjectArrayElement(result, i, phase);
393 CHECK_JNI_EXCEPTION_(env, NULL);
394 }
395 env->PopLocalFrame(NULL);
396
397 return result;
398 WB_END
399
400 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
401 Handle h_name(THREAD, JNIHandles::resolve(name));
402 ResourceMark rm;
403 const char* c_name = java_lang_String::as_utf8_string(h_name());
404 return Universe::heap()->request_concurrent_phase(c_name);
405 WB_END
406
407 #if INCLUDE_ALL_GCS
408 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
409 if (UseG1GC) {
410 G1CollectedHeap* g1 = G1CollectedHeap::heap();
411 oop result = JNIHandles::resolve(obj);
412 const HeapRegion* hr = g1->heap_region_containing(result);
413 return hr->is_humongous();
414 }
415 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
416 WB_END
417
418 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
419 if (UseG1GC) {
420 G1CollectedHeap* g1 = G1CollectedHeap::heap();
421 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
422 return hr->is_humongous();
423 }
424 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
425 WB_END
426
427 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
428 if (UseG1GC) {
429 G1CollectedHeap* g1 = G1CollectedHeap::heap();
430 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
431 return hr->is_free();
432 }
433 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
434 WB_END
435
436 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
437 if (UseG1GC) {
438 G1CollectedHeap* g1 = G1CollectedHeap::heap();
439 size_t nr = g1->max_regions();
440 return (jlong)nr;
441 }
442 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
443 WB_END
444
445 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
446 if (UseG1GC) {
447 G1CollectedHeap* g1 = G1CollectedHeap::heap();
448 size_t nr = g1->num_free_regions();
449 return (jlong)nr;
450 }
451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
452 WB_END
453
454 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
455 if (UseG1GC) {
456 G1CollectedHeap* g1h = G1CollectedHeap::heap();
457 return g1h->concurrent_mark()->cm_thread()->during_cycle();
458 }
459 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
460 WB_END
461
462 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
463 if (UseG1GC) {
464 G1CollectedHeap* g1h = G1CollectedHeap::heap();
465 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
466 g1h->collect(GCCause::_wb_conc_mark);
467 return true;
468 }
469 return false;
470 }
471 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
472 WB_END
473
474 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
475 if (UseG1GC) {
476 return (jint)HeapRegion::GrainBytes;
477 }
478 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
479 WB_END
480
481 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
482 #if INCLUDE_ALL_GCS
483 if (UseParallelGC) {
484 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
485 }
486 #endif // INCLUDE_ALL_GCS
487 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
488 WB_END
489
490 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
491 #if INCLUDE_ALL_GCS
492 if (UseParallelGC) {
493 return ParallelScavengeHeap::heap()->generation_alignment();
494 }
495 #endif // INCLUDE_ALL_GCS
496 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
497 WB_END
498
499 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
500 #if INCLUDE_ALL_GCS
501 if (UseG1GC) {
502 ResourceMark rm(THREAD);
503 G1CollectedHeap* g1h = G1CollectedHeap::heap();
504 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
505 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
506 return JNIHandles::make_local(env, h());
507 }
508 #endif // INCLUDE_ALL_GCS
509 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
510 WB_END
511
512 class OldRegionsLivenessClosure: public HeapRegionClosure {
513
514 private:
515 const int _liveness;
516 size_t _total_count;
517 size_t _total_memory;
518 size_t _total_memory_to_free;
519
520 public:
521 OldRegionsLivenessClosure(int liveness) :
522 _liveness(liveness),
523 _total_count(0),
524 _total_memory(0),
525 _total_memory_to_free(0) { }
526
527 size_t total_count() { return _total_count; }
528 size_t total_memory() { return _total_memory; }
529 size_t total_memory_to_free() { return _total_memory_to_free; }
530
531 bool doHeapRegion(HeapRegion* r) {
532 if (r->is_old()) {
533 size_t prev_live = r->marked_bytes();
534 size_t live = r->live_bytes();
535 size_t size = r->used();
536 size_t reg_size = HeapRegion::GrainBytes;
537 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
538 _total_memory += size;
539 ++_total_count;
540 if (size == reg_size) {
541 // we don't include non-full regions since they are unlikely included in mixed gc
542 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
543 _total_memory_to_free += size - prev_live;
544 }
545 }
546 }
547 return false;
548 }
549 };
550
551
552 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
553 if (!UseG1GC) {
554 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
555 }
556 if (liveness < 0) {
557 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
558 }
559
560 G1CollectedHeap* g1h = G1CollectedHeap::heap();
561 OldRegionsLivenessClosure rli(liveness);
562 g1h->heap_region_iterate(&rli);
563
564 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
565 result->long_at_put(0, rli.total_count());
566 result->long_at_put(1, rli.total_memory());
567 result->long_at_put(2, rli.total_memory_to_free());
568 return (jlongArray) JNIHandles::make_local(env, result);
569 WB_END
570
571 #endif // INCLUDE_ALL_GCS
572
573 #if INCLUDE_NMT
574 // Alloc memory using the test memory type so that we can use that to see if
575 // NMT picks it up correctly
576 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
577 jlong addr = 0;
578 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
579 return addr;
580 WB_END
581
582 // Alloc memory with pseudo call stack. The test can create psudo malloc
583 // allocation site to stress the malloc tracking.
584 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
585 address pc = (address)(size_t)pseudo_stack;
586 NativeCallStack stack(&pc, 1);
587 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
588 WB_END
589
590 // Free the memory allocated by NMTAllocTest
591 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
592 os::free((void*)(uintptr_t)mem);
593 WB_END
594
595 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
596 jlong addr = 0;
597
598 addr = (jlong)(uintptr_t)os::reserve_memory(size);
599 MemTracker::record_virtual_memory_type((address)addr, mtTest);
600
601 return addr;
602 WB_END
603
604 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
605 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
606 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
607 WB_END
608
609 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
610 os::uncommit_memory((char *)(uintptr_t)addr, size);
611 WB_END
612
613 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
614 os::release_memory((char *)(uintptr_t)addr, size);
615 WB_END
616
617 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
618 // Test that we can downgrade NMT levels but not upgrade them.
619 if (MemTracker::tracking_level() == NMT_off) {
620 MemTracker::transition_to(NMT_off);
621 return MemTracker::tracking_level() == NMT_off;
622 } else {
623 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
624 MemTracker::transition_to(NMT_summary);
625 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
626
627 // Can't go to detail once NMT is set to summary.
628 MemTracker::transition_to(NMT_detail);
629 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
630
631 // Shutdown sets tracking level to minimal.
632 MemTracker::shutdown();
633 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
634
635 // Once the tracking level is minimal, we cannot increase to summary.
636 // The code ignores this request instead of asserting because if the malloc site
637 // table overflows in another thread, it tries to change the code to summary.
638 MemTracker::transition_to(NMT_summary);
639 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
640
641 // Really can never go up to detail, verify that the code would never do this.
642 MemTracker::transition_to(NMT_detail);
643 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
644 return MemTracker::tracking_level() == NMT_minimal;
645 }
646 WB_END
647
648 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
649 int hash_size = MallocSiteTable::hash_buckets();
650 assert(hash_size > 0, "NMT hash_size should be > 0");
651 return (jint)hash_size;
652 WB_END
653 #endif // INCLUDE_NMT
654
655 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
656 assert(method != NULL, "method should not be null");
657 ThreadToNativeFromVM ttn(thread);
658 return env->FromReflectedMethod(method);
659 }
660
661 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
662 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
663 private:
664 int _result;
665 const bool _make_not_entrant;
666 public:
667 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
668 _result(0), _make_not_entrant(make_not_entrant) { }
669 int result() const { return _result; }
670
671 void doit() {
672 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
673 if (t->has_last_Java_frame()) {
674 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
675 frame* f = fst.current();
676 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
677 RegisterMap* reg_map = fst.register_map();
678 Deoptimization::deoptimize(t, *f, reg_map);
679 if (_make_not_entrant) {
680 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
681 assert(cm != NULL, "sanity check");
682 cm->make_not_entrant();
683 }
684 ++_result;
685 }
686 }
687 }
688 }
689 }
690 };
691
692 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
693 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
694 VMThread::execute(&op);
695 return op.result();
696 WB_END
697
698 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
699 MutexLockerEx mu(Compile_lock);
700 CodeCache::mark_all_nmethods_for_deoptimization();
701 VM_Deoptimize op;
702 VMThread::execute(&op);
703 WB_END
704
705 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
706 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
707 int result = 0;
708 CHECK_JNI_EXCEPTION_(env, result);
709 MutexLockerEx mu(Compile_lock);
710 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
711 if (is_osr) {
712 result += mh->mark_osr_nmethods();
713 } else if (mh->code() != NULL) {
714 mh->code()->mark_for_deoptimization();
715 ++result;
716 }
717 result += CodeCache::mark_for_deoptimization(mh());
718 if (result > 0) {
719 VM_Deoptimize op;
720 VMThread::execute(&op);
721 }
722 return result;
723 WB_END
724
725 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
726 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
727 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
728 MutexLockerEx mu(Compile_lock);
729 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
730 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
731 if (code == NULL) {
732 return JNI_FALSE;
733 }
734 return (code->is_alive() && !code->is_marked_for_deoptimization());
735 WB_END
736
737 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
738 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
739 return false;
740 }
741 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
742 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
743 MutexLockerEx mu(Compile_lock);
744 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
745 if (is_osr) {
746 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
747 } else {
748 return CompilationPolicy::can_be_compiled(mh, comp_level);
749 }
750 WB_END
751
752 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
753 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
754 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
755 MutexLockerEx mu(Compile_lock);
756 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
757 return mh->queued_for_compilation();
758 WB_END
759
760 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
761 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
762 return false; // Intrinsic is not available on a non-existent compilation level.
763 }
764 jmethodID method_id, compilation_context_id;
765 method_id = reflected_method_to_jmid(thread, env, method);
766 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
767 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
768
769 DirectiveSet* directive;
770 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
771 assert(comp != NULL, "compiler not available");
772 if (compilation_context != NULL) {
773 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
774 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
775 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
776 directive = DirectivesStack::getMatchingDirective(cch, comp);
777 } else {
778 // Calling with NULL matches default directive
779 directive = DirectivesStack::getDefaultDirective(comp);
780 }
781 bool result = comp->is_intrinsic_available(mh, directive);
782 DirectivesStack::release(directive);
783 return result;
784 WB_END
785
786 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
787 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
788 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
789 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
790 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
791 return (code != NULL ? code->comp_level() : CompLevel_none);
792 WB_END
793
794 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
795 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
796 CHECK_JNI_EXCEPTION(env);
797 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
798 if (is_osr) {
799 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
800 } else {
801 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
802 }
803 WB_END
804
805 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
806 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
807 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
808 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
809 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
810 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
811 WB_END
812
813 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
814 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
815 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
816 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
817 bool result = mh->dont_inline();
818 mh->set_dont_inline(value == JNI_TRUE);
819 return result;
820 WB_END
821
822 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
823 if (comp_level == CompLevel_any) {
824 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
825 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
826 } else {
827 return CompileBroker::queue_size(comp_level);
828 }
829 WB_END
830
831 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
832 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
833 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
834 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
835 bool result = mh->force_inline();
836 mh->set_force_inline(value == JNI_TRUE);
837 return result;
838 WB_END
839
840 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
841 // Screen for unavailable/bad comp level or null method
842 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) ||
843 CompileBroker::compiler(comp_level) == NULL) {
844 return false;
845 }
846 methodHandle mh(THREAD, method);
847 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
848 MutexLockerEx mu(Compile_lock);
849 return (mh->queued_for_compilation() || nm != NULL);
850 }
851
852 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
853 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
854 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
855 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
856 WB_END
857
858 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
859 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
860 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
861 WB_END
862
863 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
864 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
865 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
866
867 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
868 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
869 bool result = directive->PrintAssemblyOption;
870 DirectivesStack::release(directive);
871
872 return result;
873 WB_END
874
875 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
876 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
877 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
878
879 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
880
881 ResourceMark rm;
882 const char* error_msg = NULL;
883 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
884 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
885
886 if (m == NULL) {
887 assert(error_msg != NULL, "Always have an error message");
888 tty->print_cr("Got error: %s", error_msg);
889 return -1; // Pattern failed
890 }
891
892 // Pattern works - now check if it matches
893 int result;
894 if (m->match(mh, InlineMatcher::force_inline)) {
895 result = 2; // Force inline match
896 } else if (m->match(mh, InlineMatcher::dont_inline)) {
897 result = 1; // Dont inline match
898 } else {
899 result = 0; // No match
900 }
901 delete m;
902 return result;
903 WB_END
904
905 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
906 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
907 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
908
909 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
910
911 ResourceMark rm;
912 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
913
914 const char* error_msg = NULL;
915
916 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
917 if (m == NULL) {
918 assert(error_msg != NULL, "Must have error_msg");
919 tty->print_cr("Got error: %s", error_msg);
920 return -1;
921 }
922
923 // Pattern works - now check if it matches
924 int result = m->matches(mh);
925 delete m;
926 assert(result == 0 || result == 1, "Result out of range");
927 return result;
928 WB_END
929
930 static AlwaysFalseClosure always_false;
931
932 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
933 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
934 CHECK_JNI_EXCEPTION(env);
935 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
936 MutexLockerEx mu(Compile_lock);
937 MethodData* mdo = mh->method_data();
938 MethodCounters* mcs = mh->method_counters();
939
940 if (mdo != NULL) {
941 mdo->init();
942 ResourceMark rm;
943 int arg_count = mdo->method()->size_of_parameters();
944 for (int i = 0; i < arg_count; i++) {
945 mdo->set_arg_modified(i, 0);
946 }
947 MutexLockerEx mu(mdo->extra_data_lock());
948 mdo->clean_method_data(&always_false);
949 }
950
951 mh->clear_not_c1_compilable();
952 mh->clear_not_c2_compilable();
953 mh->clear_not_c2_osr_compilable();
954 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
955 if (mcs != NULL) {
956 mcs->backedge_counter()->init();
957 mcs->invocation_counter()->init();
958 mcs->set_interpreter_invocation_count(0);
959 mcs->set_interpreter_throwout_count(0);
960
961 #ifdef TIERED
962 mcs->set_rate(0.0F);
963 mh->set_prev_event_count(0);
964 mh->set_prev_time(0);
965 #endif
966 }
967 WB_END
968
969 template <typename T>
970 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
971 if (name == NULL) {
972 return false;
973 }
974 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
975 const char* flag_name = env->GetStringUTFChars(name, NULL);
976 CHECK_JNI_EXCEPTION_(env, false);
977 Flag::Error result = (*TAt)(flag_name, value, true, true);
978 env->ReleaseStringUTFChars(name, flag_name);
979 return (result == Flag::SUCCESS);
980 }
981
982 template <typename T>
983 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
984 if (name == NULL) {
985 return false;
986 }
987 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
988 const char* flag_name = env->GetStringUTFChars(name, NULL);
989 CHECK_JNI_EXCEPTION_(env, false);
990 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
991 env->ReleaseStringUTFChars(name, flag_name);
992 return (result == Flag::SUCCESS);
993 }
994
995 template <typename T>
996 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
997 ResourceMark rm(thread);
998 jclass clazz = env->FindClass(name->as_C_string());
999 CHECK_JNI_EXCEPTION_(env, NULL);
1000 jmethodID methodID = env->GetStaticMethodID(clazz,
1001 vmSymbols::valueOf_name()->as_C_string(),
1002 sig->as_C_string());
1003 CHECK_JNI_EXCEPTION_(env, NULL);
1004 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1005 CHECK_JNI_EXCEPTION_(env, NULL);
1006 return result;
1007 }
1008
1009 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1010 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1011 }
1012 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1013 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1014 }
1015 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1016 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1017 }
1018 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1019 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1020 }*/
1021 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1022 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1023 }
1024
1025 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1026 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1027 const char* flag_name = env->GetStringUTFChars(name, NULL);
1028 CHECK_JNI_EXCEPTION_(env, NULL);
1029 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1030 env->ReleaseStringUTFChars(name, flag_name);
1031 return result;
1032 }
1033
1034 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1035 Flag* flag = getVMFlag(thread, env, name);
1036 return (flag != NULL) && flag->is_constant_in_binary();
1037 WB_END
1038
1039 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1040 Flag* flag = getVMFlag(thread, env, name);
1041 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1042 WB_END
1043
1044 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1045 bool result;
1046 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1047 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1048 return booleanBox(thread, env, result);
1049 }
1050 return NULL;
1051 WB_END
1052
1053 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1054 int result;
1055 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1056 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1057 return longBox(thread, env, result);
1058 }
1059 return NULL;
1060 WB_END
1061
1062 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1063 uint result;
1064 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
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_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1072 intx result;
1073 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
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_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1081 uintx result;
1082 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
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_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1090 uint64_t result;
1091 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
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_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1099 uintx result;
1100 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_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_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1108 double result;
1109 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1110 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1111 return doubleBox(thread, env, result);
1112 }
1113 return NULL;
1114 WB_END
1115
1116 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1117 ccstr ccstrResult;
1118 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1119 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1120 jstring result = env->NewStringUTF(ccstrResult);
1121 CHECK_JNI_EXCEPTION_(env, NULL);
1122 return result;
1123 }
1124 return NULL;
1125 WB_END
1126
1127 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1128 bool result = value == JNI_TRUE ? true : false;
1129 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1130 WB_END
1131
1132 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1133 int result = value;
1134 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1135 WB_END
1136
1137 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1138 uint result = value;
1139 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1140 WB_END
1141
1142 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1143 intx result = value;
1144 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1145 WB_END
1146
1147 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1148 uintx result = value;
1149 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1150 WB_END
1151
1152 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1153 uint64_t result = value;
1154 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1155 WB_END
1156
1157 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1158 size_t result = value;
1159 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1160 WB_END
1161
1162 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1163 double result = value;
1164 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1165 WB_END
1166
1167 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1168 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1169 const char* ccstrValue;
1170 if (value == NULL) {
1171 ccstrValue = NULL;
1172 }
1173 else {
1174 ccstrValue = env->GetStringUTFChars(value, NULL);
1175 CHECK_JNI_EXCEPTION(env);
1176 }
1177 ccstr ccstrResult = ccstrValue;
1178 bool needFree;
1179 {
1180 ThreadInVMfromNative ttvfn(thread); // back to VM
1181 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1182 }
1183 if (value != NULL) {
1184 env->ReleaseStringUTFChars(value, ccstrValue);
1185 }
1186 if (needFree) {
1187 FREE_C_HEAP_ARRAY(char, ccstrResult);
1188 }
1189 WB_END
1190
1191 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1192 WhiteBox::compilation_locked = true;
1193 WB_END
1194
1195 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1196 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1197 WhiteBox::compilation_locked = false;
1198 mo.notify_all();
1199 WB_END
1200
1201 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1202 // Force a code cache sweep and block until it finished
1203 NMethodSweeper::force_sweep();
1204 WB_END
1205
1206 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1207 ResourceMark rm(THREAD);
1208 int len;
1209 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1210 return (StringTable::lookup(name, len) != NULL);
1211 WB_END
1212
1213 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1214 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
1215 Universe::heap()->collect(GCCause::_wb_full_gc);
1216 #if INCLUDE_ALL_GCS
1217 if (UseG1GC) {
1218 // Needs to be cleared explicitly for G1
1219 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
1220 }
1221 #endif // INCLUDE_ALL_GCS
1222 WB_END
1223
1224 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1225 Universe::heap()->collect(GCCause::_wb_young_gc);
1226 WB_END
1227
1228 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1229 // static+volatile in order to force the read to happen
1230 // (not be eliminated by the compiler)
1231 static char c;
1232 static volatile char* p;
1233
1234 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1235 if (p == NULL) {
1236 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1237 }
1238
1239 c = *p;
1240 WB_END
1241
1242 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1243 const char* features = VM_Version::features_string();
1244 ThreadToNativeFromVM ttn(thread);
1245 jstring features_string = env->NewStringUTF(features);
1246
1247 CHECK_JNI_EXCEPTION_(env, NULL);
1248
1249 return features_string;
1250 WB_END
1251
1252 int WhiteBox::get_blob_type(const CodeBlob* code) {
1253 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1254 if (code->is_aot()) {
1255 return -1;
1256 }
1257 return CodeCache::get_code_heap(code)->code_blob_type();
1258 }
1259
1260 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1261 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1262 return CodeCache::get_code_heap(blob_type);
1263 }
1264
1265 struct CodeBlobStub {
1266 CodeBlobStub(const CodeBlob* blob) :
1267 name(os::strdup(blob->name())),
1268 size(blob->size()),
1269 blob_type(WhiteBox::get_blob_type(blob)),
1270 address((jlong) blob) { }
1271 ~CodeBlobStub() { os::free((void*) name); }
1272 const char* const name;
1273 const jint size;
1274 const jint blob_type;
1275 const jlong address;
1276 };
1277
1278 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1279 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1280 CHECK_JNI_EXCEPTION_(env, NULL);
1281 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1282
1283 jstring name = env->NewStringUTF(cb->name);
1284 CHECK_JNI_EXCEPTION_(env, NULL);
1285 env->SetObjectArrayElement(result, 0, name);
1286
1287 jobject obj = integerBox(thread, env, cb->size);
1288 CHECK_JNI_EXCEPTION_(env, NULL);
1289 env->SetObjectArrayElement(result, 1, obj);
1290
1291 obj = integerBox(thread, env, cb->blob_type);
1292 CHECK_JNI_EXCEPTION_(env, NULL);
1293 env->SetObjectArrayElement(result, 2, obj);
1294
1295 obj = longBox(thread, env, cb->address);
1296 CHECK_JNI_EXCEPTION_(env, NULL);
1297 env->SetObjectArrayElement(result, 3, obj);
1298
1299 return result;
1300 }
1301
1302 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1303 ResourceMark rm(THREAD);
1304 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1305 CHECK_JNI_EXCEPTION_(env, NULL);
1306 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1307 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1308 jobjectArray result = NULL;
1309 if (code == NULL) {
1310 return result;
1311 }
1312 int comp_level = code->comp_level();
1313 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1314
1315 ThreadToNativeFromVM ttn(thread);
1316 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1317 CHECK_JNI_EXCEPTION_(env, NULL);
1318 result = env->NewObjectArray(5, clazz, NULL);
1319 if (result == NULL) {
1320 return result;
1321 }
1322
1323 CodeBlobStub stub(code);
1324 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1325 CHECK_JNI_EXCEPTION_(env, NULL);
1326 env->SetObjectArrayElement(result, 0, codeBlob);
1327
1328 jobject level = integerBox(thread, env, comp_level);
1329 CHECK_JNI_EXCEPTION_(env, NULL);
1330 env->SetObjectArrayElement(result, 1, level);
1331
1332 jbyteArray insts = env->NewByteArray(insts_size);
1333 CHECK_JNI_EXCEPTION_(env, NULL);
1334 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1335 env->SetObjectArrayElement(result, 2, insts);
1336
1337 jobject id = integerBox(thread, env, code->compile_id());
1338 CHECK_JNI_EXCEPTION_(env, NULL);
1339 env->SetObjectArrayElement(result, 3, id);
1340
1341 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1342 CHECK_JNI_EXCEPTION_(env, NULL);
1343 env->SetObjectArrayElement(result, 4, entry_point);
1344
1345 return result;
1346 WB_END
1347
1348 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1349 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1350 BufferBlob* blob;
1351 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1352 if (full_size < size) {
1353 full_size += align_up(size - full_size, oopSize);
1354 }
1355 {
1356 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1357 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1358 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1359 }
1360 // Track memory usage statistic after releasing CodeCache_lock
1361 MemoryService::track_code_cache_memory_usage();
1362 return blob;
1363 }
1364
1365 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1366 if (size < 0) {
1367 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1368 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1369 }
1370 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1371 WB_END
1372
1373 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1374 if (addr == 0) {
1375 return;
1376 }
1377 BufferBlob::free((BufferBlob*) addr);
1378 WB_END
1379
1380 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1381 ResourceMark rm;
1382 GrowableArray<CodeBlobStub*> blobs;
1383 {
1384 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1385 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1386 if (heap == NULL) {
1387 return NULL;
1388 }
1389 for (CodeBlob* cb = (CodeBlob*) heap->first();
1390 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1391 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1392 new (stub) CodeBlobStub(cb);
1393 blobs.append(stub);
1394 }
1395 }
1396 if (blobs.length() == 0) {
1397 return NULL;
1398 }
1399 ThreadToNativeFromVM ttn(thread);
1400 jobjectArray result = NULL;
1401 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1402 CHECK_JNI_EXCEPTION_(env, NULL);
1403 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1404 CHECK_JNI_EXCEPTION_(env, NULL);
1405 if (result == NULL) {
1406 return result;
1407 }
1408 int i = 0;
1409 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1410 it != blobs.end(); ++it) {
1411 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1412 CHECK_JNI_EXCEPTION_(env, NULL);
1413 env->SetObjectArrayElement(result, i, obj);
1414 CHECK_JNI_EXCEPTION_(env, NULL);
1415 ++i;
1416 }
1417 return result;
1418 WB_END
1419
1420 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1421 return CompileBroker::get_compilation_activity_mode();
1422 WB_END
1423
1424 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1425 if (addr == 0) {
1426 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1427 "WB_GetCodeBlob: addr is null");
1428 }
1429 ThreadToNativeFromVM ttn(thread);
1430 CodeBlobStub stub((CodeBlob*) addr);
1431 return codeBlob2objectArray(thread, env, &stub);
1432 WB_END
1433
1434 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1435 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1436 CHECK_JNI_EXCEPTION_(env, 0);
1437 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1438 return (jlong) mh->method_data();
1439 WB_END
1440
1441 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1442 return (jlong) Thread::current()->stack_size();
1443 WB_END
1444
1445 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1446 JavaThread* t = JavaThread::current();
1447 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1448 WB_END
1449
1450
1451 int WhiteBox::array_bytes_to_length(size_t bytes) {
1452 return Array<u1>::bytes_to_length(bytes);
1453 }
1454
1455 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1456 if (size < 0) {
1457 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1458 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1459 }
1460
1461 oop class_loader_oop = JNIHandles::resolve(class_loader);
1462 ClassLoaderData* cld = class_loader_oop != NULL
1463 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1464 : ClassLoaderData::the_null_class_loader_data();
1465
1466 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1467
1468 return (jlong)(uintptr_t)metadata;
1469 WB_END
1470
1471 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1472 oop class_loader_oop = JNIHandles::resolve(class_loader);
1473 ClassLoaderData* cld = class_loader_oop != NULL
1474 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1475 : ClassLoaderData::the_null_class_loader_data();
1476
1477 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1478 WB_END
1479
1480 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1481 jstring version, jstring location, jobjectArray packages))
1482 ResourceMark rm(THREAD);
1483
1484 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1485 objArrayHandle packages_h(THREAD, packages_oop);
1486 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1487
1488 char** pkgs = NULL;
1489 if (num_packages > 0) {
1490 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1491 for (int x = 0; x < num_packages; x++) {
1492 oop pkg_str = packages_h->obj_at(x);
1493 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1494 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1495 err_msg("Bad package name"));
1496 }
1497 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1498 }
1499 }
1500 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1501 WB_END
1502
1503 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1504 ResourceMark rm(THREAD);
1505 char* package_name = NULL;
1506 if (package != NULL) {
1507 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1508 }
1509 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1510 WB_END
1511
1512 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
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_to_all_unnamed(module, package_name, CHECK);
1519 WB_END
1520
1521 WB_ENTRY(void, WB_AddModuleExportsToAll(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(module, package_name, NULL, CHECK);
1528 WB_END
1529
1530 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1531 Modules::add_reads_module(from_module, source_module, CHECK);
1532 WB_END
1533
1534 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1535 if (inc < 0) {
1536 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1537 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1538 }
1539
1540 jlong max_size_t = (jlong) ((size_t) -1);
1541 if (inc > max_size_t) {
1542 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1543 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1544 }
1545
1546 size_t new_cap_until_GC = 0;
1547 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1548 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1549 if (!success) {
1550 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1551 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1552 "due to contention with another thread");
1553 }
1554 return (jlong) new_cap_until_GC;
1555 WB_END
1556
1557 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1558 return (jlong) MetaspaceGC::capacity_until_GC();
1559 WB_END
1560
1561 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1562 return MetaspaceGC::should_concurrent_collect();
1563 WB_END
1564
1565 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1566 return (jlong)Metaspace::reserve_alignment();
1567 WB_END
1568
1569 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1570 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1571 Monitor::_safepoint_check_always :
1572 Monitor::_safepoint_check_never;
1573 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1574 attemptedNoSafepointValue == JNI_TRUE);
1575 WB_END
1576
1577 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1578 oop obj_oop = JNIHandles::resolve(obj);
1579 return (jboolean) obj_oop->mark()->has_monitor();
1580 WB_END
1581
1582 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1583 VM_ForceSafepoint force_safepoint_op;
1584 VMThread::execute(&force_safepoint_op);
1585 WB_END
1586
1587 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1588 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1589 return (jlong) ik->constants();
1590 WB_END
1591
1592 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1593 return ConstantPool::CPCACHE_INDEX_TAG;
1594 WB_END
1595
1596 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1597 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1598 ConstantPool* cp = ik->constants();
1599 if (cp->cache() == NULL) {
1600 return -1;
1601 }
1602 return cp->cache()->length();
1603 WB_END
1604
1605 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1606 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1607 ConstantPool* cp = ik->constants();
1608 if (cp->cache() == NULL) {
1609 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1610 }
1611 jint cpci = index;
1612 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1613 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1614 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1615 }
1616 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1617 return cpi;
1618 WB_END
1619
1620 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1621 return ConstantPool::encode_invokedynamic_index(index);
1622 WB_END
1623
1624 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1625 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1626 VMThread::execute(&clear_ics);
1627 WB_END
1628
1629 template <typename T>
1630 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1631 assert(value != NULL, "sanity");
1632 if (method == NULL || name == NULL) {
1633 return false;
1634 }
1635 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1636 CHECK_JNI_EXCEPTION_(env, false);
1637 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1638 // can't be in VM when we call JNI
1639 ThreadToNativeFromVM ttnfv(thread);
1640 const char* flag_name = env->GetStringUTFChars(name, NULL);
1641 CHECK_JNI_EXCEPTION_(env, false);
1642 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1643 env->ReleaseStringUTFChars(name, flag_name);
1644 return result;
1645 }
1646
1647 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1648 bool result;
1649 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1650 // can't be in VM when we call JNI
1651 ThreadToNativeFromVM ttnfv(thread);
1652 return booleanBox(thread, env, result);
1653 }
1654 return NULL;
1655 WB_END
1656
1657 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1658 intx result;
1659 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1660 // can't be in VM when we call JNI
1661 ThreadToNativeFromVM ttnfv(thread);
1662 return longBox(thread, env, result);
1663 }
1664 return NULL;
1665 WB_END
1666
1667 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1668 uintx result;
1669 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1670 // can't be in VM when we call JNI
1671 ThreadToNativeFromVM ttnfv(thread);
1672 return longBox(thread, env, result);
1673 }
1674 return NULL;
1675 WB_END
1676
1677 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1678 double result;
1679 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1680 // can't be in VM when we call JNI
1681 ThreadToNativeFromVM ttnfv(thread);
1682 return doubleBox(thread, env, result);
1683 }
1684 return NULL;
1685 WB_END
1686
1687 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1688 ccstr ccstrResult;
1689 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1690 // can't be in VM when we call JNI
1691 ThreadToNativeFromVM ttnfv(thread);
1692 jstring result = env->NewStringUTF(ccstrResult);
1693 CHECK_JNI_EXCEPTION_(env, NULL);
1694 return result;
1695 }
1696 return NULL;
1697 WB_END
1698
1699 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1700 oop obj_oop = JNIHandles::resolve(obj);
1701 return oopDesc::is_archive_object(obj_oop);
1702 WB_END
1703
1704 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1705 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1706 WB_END
1707
1708 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1709 return !StringTable::shared_string_mapped();
1710 WB_END
1711
1712 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1713 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1714 if (k->is_instance_klass()) {
1715 InstanceKlass *ik = InstanceKlass::cast(k);
1716 ConstantPool *cp = ik->constants();
1717 objArrayOop refs = cp->resolved_references();
1718 return (jobject)JNIHandles::make_local(env, refs);
1719 } else {
1720 return NULL;
1721 }
1722 WB_END
1723
1724 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1725 return MetaspaceShared::open_archive_heap_region_mapped();
1726 WB_END
1727
1728 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1729 #if INCLUDE_CDS
1730 # ifdef _LP64
1731 if (!UseCompressedOops || !UseCompressedClassPointers) {
1732 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1733 return false;
1734 }
1735 # endif // _LP64
1736 return true;
1737 #else
1738 return false;
1739 #endif // INCLUDE_CDS
1740 WB_END
1741
1742
1743 #if INCLUDE_CDS
1744
1745 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1746 ResourceMark rm;
1747 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1748 int result = CDSOffsets::find_offset(c_name);
1749 return (jint)result;
1750 WB_END
1751
1752 #endif // INCLUDE_CDS
1753
1754 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1755 class TraceSelfClosure : public ThreadClosure {
1756 jint _num_threads_completed;
1757
1758 void do_thread(Thread* th) {
1759 assert(th->is_Java_thread(), "sanity");
1760 JavaThread* jt = (JavaThread*)th;
1761 ResourceMark rm;
1762
1763 jt->print_on(tty);
1764 jt->print_stack_on(tty);
1765 tty->cr();
1766 Atomic::inc(&_num_threads_completed);
1767 }
1768
1769 public:
1770 TraceSelfClosure() : _num_threads_completed(0) {}
1771
1772 jint num_threads_completed() const { return _num_threads_completed; }
1773 };
1774 TraceSelfClosure tsc;
1775
1776 if (all_threads) {
1777 Handshake::execute(&tsc);
1778 } else {
1779 oop thread_oop = JNIHandles::resolve(thread_handle);
1780 if (thread_oop != NULL) {
1781 JavaThread* target = java_lang_Thread::thread(thread_oop);
1782 Handshake::execute(&tsc, target);
1783 }
1784 }
1785 return tsc.num_threads_completed();
1786 WB_END
1787
1788 //Some convenience methods to deal with objects from java
1789 int WhiteBox::offset_for_field(const char* field_name, oop object,
1790 Symbol* signature_symbol) {
1791 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1792 Thread* THREAD = Thread::current();
1793
1794 //Get the class of our object
1795 Klass* arg_klass = object->klass();
1796 //Turn it into an instance-klass
1797 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1798
1799 //Create symbols to look for in the class
1800 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1801 THREAD);
1802
1803 //To be filled in with an offset of the field we're looking for
1804 fieldDescriptor fd;
1805
1806 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1807 if (res == NULL) {
1808 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1809 name_symbol->as_C_string());
1810 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1811 }
1812
1813 //fetch the field at the offset we've found
1814 int dest_offset = fd.offset();
1815
1816 return dest_offset;
1817 }
1818
1819
1820 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1821 int offset = offset_for_field(field_name, object,
1822 vmSymbols::string_signature());
1823 oop string = object->obj_field(offset);
1824 if (string == NULL) {
1825 return NULL;
1826 }
1827 const char* ret = java_lang_String::as_utf8_string(string);
1828 return ret;
1829 }
1830
1831 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1832 int offset =
1833 offset_for_field(field_name, object, vmSymbols::bool_signature());
1834 bool ret = (object->bool_field(offset) == JNI_TRUE);
1835 return ret;
1836 }
1837
1838 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1839 ResourceMark rm;
1840 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1841
1842 // one by one registration natives for exception catching
1843 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1844 CHECK_JNI_EXCEPTION(env);
1845 for (int i = 0, n = method_count; i < n; ++i) {
1846 // Skip dummy entries
1847 if (method_array[i].fnPtr == NULL) continue;
1848 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1849 jthrowable throwable_obj = env->ExceptionOccurred();
1850 if (throwable_obj != NULL) {
1851 env->ExceptionClear();
1852 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1853 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1854 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1855 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1856 method_array[i].name, method_array[i].signature);
1857 }
1858 } else {
1859 // Registration failed unexpectedly.
1860 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1861 method_array[i].name, method_array[i].signature);
1862 env->UnregisterNatives(wbclass);
1863 break;
1864 }
1865 }
1866 }
1867 }
1868
1869 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1870 // can't be in VM when we call JNI
1871 ThreadToNativeFromVM ttnfv(thread);
1872 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1873 CHECK_JNI_EXCEPTION_(env, 0);
1874 int ret;
1875 {
1876 ThreadInVMfromNative ttvfn(thread); // back to VM
1877 ret = DirectivesParser::parse_string(dir, tty);
1878 }
1879 env->ReleaseStringUTFChars(compDirect, dir);
1880 // -1 for error parsing directive. Return 0 as number of directives added.
1881 if (ret == -1) {
1882 ret = 0;
1883 }
1884 return (jint) ret;
1885 WB_END
1886
1887 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1888 DirectivesStack::pop(count);
1889 WB_END
1890
1891 // Checks that the library libfile has the noexecstack bit set.
1892 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1893 jboolean ret = false;
1894 #ifdef LINUX
1895 // Can't be in VM when we call JNI.
1896 ThreadToNativeFromVM ttnfv(thread);
1897 const char* lf = env->GetStringUTFChars(libfile, NULL);
1898 CHECK_JNI_EXCEPTION_(env, 0);
1899 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1900 env->ReleaseStringUTFChars(libfile, lf);
1901 #endif
1902 return ret;
1903 WB_END
1904
1905 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1906 LINUX_ONLY(return OSContainer::is_containerized();)
1907 return false;
1908 WB_END
1909
1910 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1911 os::print_os_info(tty);
1912 WB_END
1913
1914
1915 #define CC (char*)
1916
1917 static JNINativeMethod methods[] = {
1918 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1919 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1920 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1921 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1922 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1923 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1924 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1925 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1926 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1927 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1928 {CC"parseCommandLine0",
1929 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1930 (void*) &WB_ParseCommandLine
1931 },
1932 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1933 (void*)&WB_AddToBootstrapClassLoaderSearch},
1934 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1935 (void*)&WB_AddToSystemClassLoaderSearch},
1936 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1937 (void*)&WB_GetCompressedOopsMaxHeapSize},
1938 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1939 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1940 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1941 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1942 #if INCLUDE_CDS
1943 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1944 #endif
1945 #if INCLUDE_ALL_GCS
1946 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1947 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1948 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1949 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1950 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1951 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1952 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1953 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1954 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1955 (void*)&WB_G1AuxiliaryMemoryUsage },
1956 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1957 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1958 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1959 #endif // INCLUDE_ALL_GCS
1960 #if INCLUDE_NMT
1961 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1962 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1963 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1964 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1965 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1966 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1967 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1968 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1969 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1970 #endif // INCLUDE_NMT
1971 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1972 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1973 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1974 (void*)&WB_DeoptimizeMethod },
1975 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1976 (void*)&WB_IsMethodCompiled },
1977 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1978 (void*)&WB_IsMethodCompilable},
1979 {CC"isMethodQueuedForCompilation0",
1980 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1981 {CC"isIntrinsicAvailable0",
1982 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1983 (void*)&WB_IsIntrinsicAvailable},
1984 {CC"makeMethodNotCompilable0",
1985 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1986 {CC"testSetDontInlineMethod0",
1987 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1988 {CC"getMethodCompilationLevel0",
1989 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1990 {CC"getMethodEntryBci0",
1991 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1992 {CC"getCompileQueueSize",
1993 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1994 {CC"testSetForceInlineMethod0",
1995 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1996 {CC"enqueueMethodForCompilation0",
1997 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1998 {CC"enqueueInitializerForCompilation0",
1999 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2000 {CC"clearMethodState0",
2001 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2002 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2003 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2004 {CC"matchesMethod",
2005 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2006 (void*)&WB_MatchesMethod},
2007 {CC"matchesInline",
2008 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2009 (void*)&WB_MatchesInline},
2010 {CC"shouldPrintAssembly",
2011 CC"(Ljava/lang/reflect/Executable;I)Z",
2012 (void*)&WB_ShouldPrintAssembly},
2013
2014 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2015 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2016 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2017 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2018 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2019 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2020 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2021 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2022 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2023 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2024 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2025 (void*)&WB_SetStringVMFlag},
2026 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2027 (void*)&WB_GetBooleanVMFlag},
2028 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2029 (void*)&WB_GetIntVMFlag},
2030 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2031 (void*)&WB_GetUintVMFlag},
2032 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2033 (void*)&WB_GetIntxVMFlag},
2034 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2035 (void*)&WB_GetUintxVMFlag},
2036 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2037 (void*)&WB_GetUint64VMFlag},
2038 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2039 (void*)&WB_GetSizeTVMFlag},
2040 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2041 (void*)&WB_GetDoubleVMFlag},
2042 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2043 (void*)&WB_GetStringVMFlag},
2044 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2045 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2046 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2047 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2048 {CC"allocateMetaspace",
2049 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2050 {CC"freeMetaspace",
2051 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2052 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2053 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2054 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2055 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2056 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2057 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2058 (void*)&WB_GetNMethod },
2059 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2060 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2061 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2062 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2063 {CC"getCompilationActivityMode",
2064 CC"()I", (void*)&WB_GetCompilationActivityMode},
2065 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2066 (void*)&WB_GetMethodData },
2067 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2068 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2069 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2070 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2071 (void*)&WB_DefineModule },
2072 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2073 (void*)&WB_AddModuleExports },
2074 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2075 (void*)&WB_AddReadsModule },
2076 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2077 (void*)&WB_AddModuleExportsToAllUnnamed },
2078 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2079 (void*)&WB_AddModuleExportsToAll },
2080 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2081 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2082 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2083 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2084 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2085 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2086 {CC"remapInstructionOperandFromCPCache0",
2087 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2088 {CC"encodeConstantPoolIndyIndex0",
2089 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2090 {CC"getMethodBooleanOption",
2091 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2092 (void*)&WB_GetMethodBooleaneOption},
2093 {CC"getMethodIntxOption",
2094 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2095 (void*)&WB_GetMethodIntxOption},
2096 {CC"getMethodUintxOption",
2097 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2098 (void*)&WB_GetMethodUintxOption},
2099 {CC"getMethodDoubleOption",
2100 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2101 (void*)&WB_GetMethodDoubleOption},
2102 {CC"getMethodStringOption",
2103 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2104 (void*)&WB_GetMethodStringOption},
2105 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2106 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2107 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2108 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2109 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2110 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2111 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2112 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2113 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2114 (void*)&WB_AddCompilerDirective },
2115 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2116 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2117 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2118 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2119 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2120 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2121 (void*)&WB_GetConcurrentGCPhases},
2122 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2123 (void*)&WB_RequestConcurrentGCPhase},
2124 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2125 (void*)&WB_CheckLibSpecifiesNoexecstack},
2126 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2127 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2128 };
2129
2130
2131 #undef CC
2132
2133 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2134 {
2135 if (WhiteBoxAPI) {
2136 // Make sure that wbclass is loaded by the null classloader
2137 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2138 Handle loader(THREAD, ik->class_loader());
2139 if (loader.is_null()) {
2140 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2141 WhiteBox::register_extended(env, wbclass, thread);
2142 WhiteBox::set_used();
2143 }
2144 }
2145 }
2146 JVM_END