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.inline.hpp"
44 #include "oops/method.inline.hpp"
45 #include "oops/objArrayKlass.hpp"
46 #include "oops/objArrayOop.inline.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "oops/typeArrayOop.inline.hpp"
49 #include "prims/wbtestmethods/parserTests.hpp"
50 #include "prims/whitebox.hpp"
51 #include "runtime/arguments.hpp"
52 #include "runtime/compilationPolicy.hpp"
53 #include "runtime/deoptimization.hpp"
54 #include "runtime/handshake.hpp"
55 #include "runtime/interfaceSupport.hpp"
56 #include "runtime/javaCalls.hpp"
57 #include "runtime/jniHandles.inline.hpp"
58 #include "runtime/os.hpp"
59 #include "runtime/sweeper.hpp"
60 #include "runtime/thread.hpp"
61 #include "runtime/threadSMR.hpp"
62 #include "runtime/vm_version.hpp"
63 #include "utilities/align.hpp"
64 #include "utilities/debug.hpp"
65 #include "utilities/elfFile.hpp"
66 #include "utilities/exceptions.hpp"
67 #include "utilities/macros.hpp"
68 #if INCLUDE_CDS
69 #include "prims/cdsoffsets.hpp"
70 #endif // INCLUDE_CDS
71 #if INCLUDE_ALL_GCS
72 #include "gc/g1/concurrentMarkThread.hpp"
73 #include "gc/g1/g1CollectedHeap.inline.hpp"
74 #include "gc/g1/g1ConcurrentMark.hpp"
75 #include "gc/g1/heapRegionRemSet.hpp"
76 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
77 #include "gc/parallel/adjoiningGenerations.hpp"
78 #endif // INCLUDE_ALL_GCS
79 #if INCLUDE_NMT
80 #include "services/mallocSiteTable.hpp"
81 #include "services/memTracker.hpp"
82 #include "utilities/nativeCallStack.hpp"
83 #endif // INCLUDE_NMT
84
85 #ifdef LINUX
86 #include "osContainer_linux.hpp"
87 #endif
88
89 #define SIZE_T_MAX_VALUE ((size_t) -1)
90
91 bool WhiteBox::_used = false;
92 volatile bool WhiteBox::compilation_locked = false;
93
94 class VM_WhiteBoxOperation : public VM_Operation {
95 public:
96 VM_WhiteBoxOperation() { }
97 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
98 bool allow_nested_vm_operations() const { return true; }
99 };
100
101
102 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
103 return (jlong)(void*)JNIHandles::resolve(obj);
104 WB_END
105
106 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
107 return heapOopSize;
108 WB_END
109
110 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
111 return os::vm_page_size();
112 WB_END
113
114 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
115 return os::vm_allocation_granularity();
116 WB_END
117
118 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
119 return os::large_page_size();
120 WB_END
121
122 class WBIsKlassAliveClosure : public KlassClosure {
123 Symbol* _name;
124 bool _found;
125 public:
126 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
127
128 void do_klass(Klass* k) {
129 if (_found) return;
130 Symbol* ksym = k->name();
131 if (ksym->fast_compare(_name) == 0) {
132 _found = true;
133 }
134 }
135
136 bool found() const {
137 return _found;
138 }
139 };
140
141 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
142 oop h_name = JNIHandles::resolve(name);
143 if (h_name == NULL) return false;
144 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
145 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
146
147 WBIsKlassAliveClosure closure(sym);
148 ClassLoaderDataGraph::classes_do(&closure);
149
150 return closure.found();
151 WB_END
152
153 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
154 #if INCLUDE_JVMTI
155 ResourceMark rm;
156 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
157 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
158 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
159 assert(err == JVMTI_ERROR_NONE, "must not fail");
160 #endif
161 }
162 WB_END
163
164 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
165 #if INCLUDE_JVMTI
166 ResourceMark rm;
167 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
168 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
169 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
170 assert(err == JVMTI_ERROR_NONE, "must not fail");
171 #endif
172 }
173 WB_END
174
175
176 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
177 return (jlong)Arguments::max_heap_for_compressed_oops();
178 }
179 WB_END
180
181 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
182 CollectorPolicy * p = Universe::heap()->collector_policy();
183 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
184 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
185 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
186 p->space_alignment(), p->heap_alignment());
187 }
188 WB_END
189
190 #ifndef PRODUCT
191 // Forward declaration
192 void TestReservedSpace_test();
193 void TestReserveMemorySpecial_test();
194 void TestVirtualSpace_test();
195 void TestMetaspaceAux_test();
196 #endif
197
198 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
199 #ifndef PRODUCT
200 TestReservedSpace_test();
201 TestReserveMemorySpecial_test();
202 TestVirtualSpace_test();
203 TestMetaspaceAux_test();
204 #endif
205 WB_END
206
207 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
208 size_t granularity = os::vm_allocation_granularity();
209 ReservedHeapSpace rhs(100 * granularity, granularity, false);
210 VirtualSpace vs;
211 vs.initialize(rhs, 50 * granularity);
212
213 // Check if constraints are complied
214 if (!( UseCompressedOops && rhs.base() != NULL &&
215 Universe::narrow_oop_base() != NULL &&
216 Universe::narrow_oop_use_implicit_null_checks() )) {
217 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
218 "\tUseCompressedOops is %d\n"
219 "\trhs.base() is " PTR_FORMAT "\n"
220 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
221 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
222 UseCompressedOops,
223 p2i(rhs.base()),
224 p2i(Universe::narrow_oop_base()),
225 Universe::narrow_oop_use_implicit_null_checks());
226 return;
227 }
228 tty->print_cr("Reading from no access area... ");
229 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
230 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
231 WB_END
232
233 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
234 size_t magnitude, size_t iterations) {
235 size_t granularity = os::vm_allocation_granularity();
236 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
237 VirtualSpace vs;
238 if (!vs.initialize(rhs, 0)) {
239 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
240 return 3;
241 }
242
243 int seed = os::random();
244 tty->print_cr("Random seed is %d", seed);
245 os::init_random(seed);
246
247 for (size_t i = 0; i < iterations; i++) {
248
249 // Whether we will shrink or grow
250 bool shrink = os::random() % 2L == 0;
251
252 // Get random delta to resize virtual space
253 size_t delta = (size_t)os::random() % magnitude;
254
255 // If we are about to shrink virtual space below zero, then expand instead
256 if (shrink && vs.committed_size() < delta) {
257 shrink = false;
258 }
259
260 // Resizing by delta
261 if (shrink) {
262 vs.shrink_by(delta);
263 } else {
264 // If expanding fails expand_by will silently return false
265 vs.expand_by(delta, true);
266 }
267 }
268 return 0;
269 }
270
271 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
272 jlong reserved_space_size, jlong magnitude, jlong iterations))
273 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
274 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
275 iterations);
276 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
277 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
278 return 1;
279 }
280
281 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
282 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
283 if (sizeof(size_t) < sizeof(jlong)) {
284 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
285 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
286 || iterations > size_t_max_value) {
287 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
288 return 2;
289 }
290 }
291
292 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
293 (size_t) magnitude, (size_t) iterations);
294 WB_END
295
296 static const jint serial_code = 1;
297 static const jint parallel_code = 2;
298 static const jint cms_code = 4;
299 static const jint g1_code = 8;
300
301 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
302 if (UseSerialGC) {
303 return serial_code;
304 } else if (UseParallelGC || UseParallelOldGC) {
305 return parallel_code;
306 } if (UseConcMarkSweepGC) {
307 return cms_code;
308 } else if (UseG1GC) {
309 return g1_code;
310 }
311 ShouldNotReachHere();
312 return 0;
313 WB_END
314
315 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
316 #if INCLUDE_ALL_GCS
317 return serial_code | parallel_code | cms_code | g1_code;
318 #else
319 return serial_code;
320 #endif // INCLUDE_ALL_GCS
321 WB_END
322
323 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
324 if (UseSerialGC) {
325 return FLAG_IS_ERGO(UseSerialGC);
326 } else if (UseParallelGC) {
327 return FLAG_IS_ERGO(UseParallelGC);
328 } else if (UseParallelOldGC) {
329 return FLAG_IS_ERGO(UseParallelOldGC);
330 } else if (UseConcMarkSweepGC) {
331 return FLAG_IS_ERGO(UseConcMarkSweepGC);
332 } else if (UseG1GC) {
333 return FLAG_IS_ERGO(UseG1GC);
334 }
335 ShouldNotReachHere();
336 return false;
337 WB_END
338
339 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
340 oop p = JNIHandles::resolve(obj);
341 #if INCLUDE_ALL_GCS
342 if (UseG1GC) {
343 G1CollectedHeap* g1 = G1CollectedHeap::heap();
344 const HeapRegion* hr = g1->heap_region_containing(p);
345 if (hr == NULL) {
346 return false;
347 }
348 return !(hr->is_young());
349 } else if (UseParallelGC) {
350 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
351 return !psh->is_in_young(p);
352 }
353 #endif // INCLUDE_ALL_GCS
354 GenCollectedHeap* gch = GenCollectedHeap::heap();
355 return !gch->is_in_young(p);
356 WB_END
357
358 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
359 oop p = JNIHandles::resolve(obj);
360 return p->size() * HeapWordSize;
361 WB_END
362
363 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
364 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
365 return (jlong)alignment;
366 WB_END
367
368 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
369 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
370 return (jlong)alignment;
371 WB_END
372
373 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
374 return Universe::heap()->supports_concurrent_phase_control();
375 WB_END
376
377 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
378 const char* const* phases = Universe::heap()->concurrent_phases();
379 jint nphases = 0;
380 for ( ; phases[nphases] != NULL; ++nphases) ;
381
382 ResourceMark rm(thread);
383 ThreadToNativeFromVM ttn(thread);
384 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
385 CHECK_JNI_EXCEPTION_(env, NULL);
386
387 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
388 CHECK_JNI_EXCEPTION_(env, NULL);
389
390 // If push fails, return with pending exception.
391 if (env->PushLocalFrame(nphases) < 0) return NULL;
392 for (jint i = 0; i < nphases; ++i) {
393 jstring phase = env->NewStringUTF(phases[i]);
394 CHECK_JNI_EXCEPTION_(env, NULL);
395 env->SetObjectArrayElement(result, i, phase);
396 CHECK_JNI_EXCEPTION_(env, NULL);
397 }
398 env->PopLocalFrame(NULL);
399
400 return result;
401 WB_END
402
403 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
404 Handle h_name(THREAD, JNIHandles::resolve(name));
405 ResourceMark rm;
406 const char* c_name = java_lang_String::as_utf8_string(h_name());
407 return Universe::heap()->request_concurrent_phase(c_name);
408 WB_END
409
410 #if INCLUDE_ALL_GCS
411 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
412 if (UseG1GC) {
413 G1CollectedHeap* g1 = G1CollectedHeap::heap();
414 oop result = JNIHandles::resolve(obj);
415 const HeapRegion* hr = g1->heap_region_containing(result);
416 return hr->is_humongous();
417 }
418 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
419 WB_END
420
421 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
422 if (UseG1GC) {
423 G1CollectedHeap* g1 = G1CollectedHeap::heap();
424 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
425 return hr->is_humongous();
426 }
427 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
428 WB_END
429
430 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
431 if (UseG1GC) {
432 G1CollectedHeap* g1 = G1CollectedHeap::heap();
433 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
434 return hr->is_free();
435 }
436 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
437 WB_END
438
439 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
440 if (UseG1GC) {
441 G1CollectedHeap* g1 = G1CollectedHeap::heap();
442 size_t nr = g1->max_regions();
443 return (jlong)nr;
444 }
445 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
446 WB_END
447
448 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
449 if (UseG1GC) {
450 G1CollectedHeap* g1 = G1CollectedHeap::heap();
451 size_t nr = g1->num_free_regions();
452 return (jlong)nr;
453 }
454 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
455 WB_END
456
457 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
458 if (UseG1GC) {
459 G1CollectedHeap* g1h = G1CollectedHeap::heap();
460 return g1h->concurrent_mark()->cm_thread()->during_cycle();
461 }
462 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
463 WB_END
464
465 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
466 if (UseG1GC) {
467 G1CollectedHeap* g1h = G1CollectedHeap::heap();
468 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
469 g1h->collect(GCCause::_wb_conc_mark);
470 return true;
471 }
472 return false;
473 }
474 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
475 WB_END
476
477 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
478 if (UseG1GC) {
479 return (jint)HeapRegion::GrainBytes;
480 }
481 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
482 WB_END
483
484 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
485 #if INCLUDE_ALL_GCS
486 if (UseParallelGC) {
487 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
488 }
489 #endif // INCLUDE_ALL_GCS
490 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
491 WB_END
492
493 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
494 #if INCLUDE_ALL_GCS
495 if (UseParallelGC) {
496 return ParallelScavengeHeap::heap()->generation_alignment();
497 }
498 #endif // INCLUDE_ALL_GCS
499 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
500 WB_END
501
502 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
503 #if INCLUDE_ALL_GCS
504 if (UseG1GC) {
505 ResourceMark rm(THREAD);
506 G1CollectedHeap* g1h = G1CollectedHeap::heap();
507 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
508 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
509 return JNIHandles::make_local(env, h());
510 }
511 #endif // INCLUDE_ALL_GCS
512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
513 WB_END
514
515 class OldRegionsLivenessClosure: public HeapRegionClosure {
516
517 private:
518 const int _liveness;
519 size_t _total_count;
520 size_t _total_memory;
521 size_t _total_memory_to_free;
522
523 public:
524 OldRegionsLivenessClosure(int liveness) :
525 _liveness(liveness),
526 _total_count(0),
527 _total_memory(0),
528 _total_memory_to_free(0) { }
529
530 size_t total_count() { return _total_count; }
531 size_t total_memory() { return _total_memory; }
532 size_t total_memory_to_free() { return _total_memory_to_free; }
533
534 bool do_heap_region(HeapRegion* r) {
535 if (r->is_old()) {
536 size_t prev_live = r->marked_bytes();
537 size_t live = r->live_bytes();
538 size_t size = r->used();
539 size_t reg_size = HeapRegion::GrainBytes;
540 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
541 _total_memory += size;
542 ++_total_count;
543 if (size == reg_size) {
544 // we don't include non-full regions since they are unlikely included in mixed gc
545 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
546 _total_memory_to_free += size - prev_live;
547 }
548 }
549 }
550 return false;
551 }
552 };
553
554
555 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
556 if (!UseG1GC) {
557 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
558 }
559 if (liveness < 0) {
560 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
561 }
562
563 G1CollectedHeap* g1h = G1CollectedHeap::heap();
564 OldRegionsLivenessClosure rli(liveness);
565 g1h->heap_region_iterate(&rli);
566
567 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
568 result->long_at_put(0, rli.total_count());
569 result->long_at_put(1, rli.total_memory());
570 result->long_at_put(2, rli.total_memory_to_free());
571 return (jlongArray) JNIHandles::make_local(env, result);
572 WB_END
573
574 #endif // INCLUDE_ALL_GCS
575
576 #if INCLUDE_NMT
577 // Alloc memory using the test memory type so that we can use that to see if
578 // NMT picks it up correctly
579 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
580 jlong addr = 0;
581 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
582 return addr;
583 WB_END
584
585 // Alloc memory with pseudo call stack. The test can create psudo malloc
586 // allocation site to stress the malloc tracking.
587 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
588 address pc = (address)(size_t)pseudo_stack;
589 NativeCallStack stack(&pc, 1);
590 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
591 WB_END
592
593 // Free the memory allocated by NMTAllocTest
594 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
595 os::free((void*)(uintptr_t)mem);
596 WB_END
597
598 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
599 jlong addr = 0;
600
601 addr = (jlong)(uintptr_t)os::reserve_memory(size);
602 MemTracker::record_virtual_memory_type((address)addr, mtTest);
603
604 return addr;
605 WB_END
606
607 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
608 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
609 MemTracker::record_virtual_memory_type((address)addr, mtTest);
610
611 return addr;
612 WB_END
613
614 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
615 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
616 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
617 WB_END
618
619 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
620 os::uncommit_memory((char *)(uintptr_t)addr, size);
621 WB_END
622
623 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
624 os::release_memory((char *)(uintptr_t)addr, size);
625 WB_END
626
627 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
628 // Test that we can downgrade NMT levels but not upgrade them.
629 if (MemTracker::tracking_level() == NMT_off) {
630 MemTracker::transition_to(NMT_off);
631 return MemTracker::tracking_level() == NMT_off;
632 } else {
633 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
634 MemTracker::transition_to(NMT_summary);
635 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
636
637 // Can't go to detail once NMT is set to summary.
638 MemTracker::transition_to(NMT_detail);
639 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
640
641 // Shutdown sets tracking level to minimal.
642 MemTracker::shutdown();
643 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
644
645 // Once the tracking level is minimal, we cannot increase to summary.
646 // The code ignores this request instead of asserting because if the malloc site
647 // table overflows in another thread, it tries to change the code to summary.
648 MemTracker::transition_to(NMT_summary);
649 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
650
651 // Really can never go up to detail, verify that the code would never do this.
652 MemTracker::transition_to(NMT_detail);
653 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
654 return MemTracker::tracking_level() == NMT_minimal;
655 }
656 WB_END
657
658 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
659 int hash_size = MallocSiteTable::hash_buckets();
660 assert(hash_size > 0, "NMT hash_size should be > 0");
661 return (jint)hash_size;
662 WB_END
663 #endif // INCLUDE_NMT
664
665 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
666 assert(method != NULL, "method should not be null");
667 ThreadToNativeFromVM ttn(thread);
668 return env->FromReflectedMethod(method);
669 }
670
671 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
672 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
673 private:
674 int _result;
675 const bool _make_not_entrant;
676 public:
677 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
678 _result(0), _make_not_entrant(make_not_entrant) { }
679 int result() const { return _result; }
680
681 void doit() {
682 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
683 if (t->has_last_Java_frame()) {
684 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
685 frame* f = fst.current();
686 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
687 RegisterMap* reg_map = fst.register_map();
688 Deoptimization::deoptimize(t, *f, reg_map);
689 if (_make_not_entrant) {
690 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
691 assert(cm != NULL, "sanity check");
692 cm->make_not_entrant();
693 }
694 ++_result;
695 }
696 }
697 }
698 }
699 }
700 };
701
702 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
703 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
704 VMThread::execute(&op);
705 return op.result();
706 WB_END
707
708 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
709 MutexLockerEx mu(Compile_lock);
710 CodeCache::mark_all_nmethods_for_deoptimization();
711 VM_Deoptimize op;
712 VMThread::execute(&op);
713 WB_END
714
715 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
716 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
717 int result = 0;
718 CHECK_JNI_EXCEPTION_(env, result);
719 MutexLockerEx mu(Compile_lock);
720 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
721 if (is_osr) {
722 result += mh->mark_osr_nmethods();
723 } else if (mh->code() != NULL) {
724 mh->code()->mark_for_deoptimization();
725 ++result;
726 }
727 result += CodeCache::mark_for_deoptimization(mh());
728 if (result > 0) {
729 VM_Deoptimize op;
730 VMThread::execute(&op);
731 }
732 return result;
733 WB_END
734
735 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
736 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
737 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
738 MutexLockerEx mu(Compile_lock);
739 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
740 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
741 if (code == NULL) {
742 return JNI_FALSE;
743 }
744 return (code->is_alive() && !code->is_marked_for_deoptimization());
745 WB_END
746
747 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
748 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
749 return false;
750 }
751 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
752 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
753 MutexLockerEx mu(Compile_lock);
754 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
755 if (is_osr) {
756 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
757 } else {
758 return CompilationPolicy::can_be_compiled(mh, comp_level);
759 }
760 WB_END
761
762 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
763 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
764 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
765 MutexLockerEx mu(Compile_lock);
766 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
767 return mh->queued_for_compilation();
768 WB_END
769
770 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
771 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
772 return false; // Intrinsic is not available on a non-existent compilation level.
773 }
774 jmethodID method_id, compilation_context_id;
775 method_id = reflected_method_to_jmid(thread, env, method);
776 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
777 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
778
779 DirectiveSet* directive;
780 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
781 assert(comp != NULL, "compiler not available");
782 if (compilation_context != NULL) {
783 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
784 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
785 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
786 directive = DirectivesStack::getMatchingDirective(cch, comp);
787 } else {
788 // Calling with NULL matches default directive
789 directive = DirectivesStack::getDefaultDirective(comp);
790 }
791 bool result = comp->is_intrinsic_available(mh, directive);
792 DirectivesStack::release(directive);
793 return result;
794 WB_END
795
796 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
797 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
798 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
799 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
800 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
801 return (code != NULL ? code->comp_level() : CompLevel_none);
802 WB_END
803
804 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
805 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
806 CHECK_JNI_EXCEPTION(env);
807 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
808 if (is_osr) {
809 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
810 } else {
811 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
812 }
813 WB_END
814
815 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
816 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
817 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
818 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
819 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
820 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
821 WB_END
822
823 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
825 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
826 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
827 bool result = mh->dont_inline();
828 mh->set_dont_inline(value == JNI_TRUE);
829 return result;
830 WB_END
831
832 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
833 if (comp_level == CompLevel_any) {
834 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
835 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
836 } else {
837 return CompileBroker::queue_size(comp_level);
838 }
839 WB_END
840
841 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
842 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
843 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
844 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
845 bool result = mh->force_inline();
846 mh->set_force_inline(value == JNI_TRUE);
847 return result;
848 WB_END
849
850 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
851 // Screen for unavailable/bad comp level or null method
852 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) ||
853 CompileBroker::compiler(comp_level) == NULL) {
854 return false;
855 }
856 methodHandle mh(THREAD, method);
857 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
858 MutexLockerEx mu(Compile_lock);
859 return (mh->queued_for_compilation() || nm != NULL);
860 }
861
862 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
863 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
864 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
865 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
866 WB_END
867
868 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
869 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
870 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
871 WB_END
872
873 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
874 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
875 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
876
877 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
878 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
879 bool result = directive->PrintAssemblyOption;
880 DirectivesStack::release(directive);
881
882 return result;
883 WB_END
884
885 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
886 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
887 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
888
889 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
890
891 ResourceMark rm;
892 const char* error_msg = NULL;
893 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
894 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
895
896 if (m == NULL) {
897 assert(error_msg != NULL, "Always have an error message");
898 tty->print_cr("Got error: %s", error_msg);
899 return -1; // Pattern failed
900 }
901
902 // Pattern works - now check if it matches
903 int result;
904 if (m->match(mh, InlineMatcher::force_inline)) {
905 result = 2; // Force inline match
906 } else if (m->match(mh, InlineMatcher::dont_inline)) {
907 result = 1; // Dont inline match
908 } else {
909 result = 0; // No match
910 }
911 delete m;
912 return result;
913 WB_END
914
915 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
916 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
917 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
918
919 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
920
921 ResourceMark rm;
922 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
923
924 const char* error_msg = NULL;
925
926 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
927 if (m == NULL) {
928 assert(error_msg != NULL, "Must have error_msg");
929 tty->print_cr("Got error: %s", error_msg);
930 return -1;
931 }
932
933 // Pattern works - now check if it matches
934 int result = m->matches(mh);
935 delete m;
936 assert(result == 0 || result == 1, "Result out of range");
937 return result;
938 WB_END
939
940 static AlwaysFalseClosure always_false;
941
942 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
943 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
944 CHECK_JNI_EXCEPTION(env);
945 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
946 MutexLockerEx mu(Compile_lock);
947 MethodData* mdo = mh->method_data();
948 MethodCounters* mcs = mh->method_counters();
949
950 if (mdo != NULL) {
951 mdo->init();
952 ResourceMark rm;
953 int arg_count = mdo->method()->size_of_parameters();
954 for (int i = 0; i < arg_count; i++) {
955 mdo->set_arg_modified(i, 0);
956 }
957 MutexLockerEx mu(mdo->extra_data_lock());
958 mdo->clean_method_data(&always_false);
959 }
960
961 mh->clear_not_c1_compilable();
962 mh->clear_not_c2_compilable();
963 mh->clear_not_c2_osr_compilable();
964 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
965 if (mcs != NULL) {
966 mcs->backedge_counter()->init();
967 mcs->invocation_counter()->init();
968 mcs->set_interpreter_invocation_count(0);
969 mcs->set_interpreter_throwout_count(0);
970
971 #ifdef TIERED
972 mcs->set_rate(0.0F);
973 mh->set_prev_event_count(0);
974 mh->set_prev_time(0);
975 #endif
976 }
977 WB_END
978
979 template <typename T>
980 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
981 if (name == NULL) {
982 return false;
983 }
984 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
985 const char* flag_name = env->GetStringUTFChars(name, NULL);
986 CHECK_JNI_EXCEPTION_(env, false);
987 Flag::Error result = (*TAt)(flag_name, value, true, true);
988 env->ReleaseStringUTFChars(name, flag_name);
989 return (result == Flag::SUCCESS);
990 }
991
992 template <typename T>
993 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
994 if (name == NULL) {
995 return false;
996 }
997 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
998 const char* flag_name = env->GetStringUTFChars(name, NULL);
999 CHECK_JNI_EXCEPTION_(env, false);
1000 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
1001 env->ReleaseStringUTFChars(name, flag_name);
1002 return (result == Flag::SUCCESS);
1003 }
1004
1005 template <typename T>
1006 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1007 ResourceMark rm(thread);
1008 jclass clazz = env->FindClass(name->as_C_string());
1009 CHECK_JNI_EXCEPTION_(env, NULL);
1010 jmethodID methodID = env->GetStaticMethodID(clazz,
1011 vmSymbols::valueOf_name()->as_C_string(),
1012 sig->as_C_string());
1013 CHECK_JNI_EXCEPTION_(env, NULL);
1014 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1015 CHECK_JNI_EXCEPTION_(env, NULL);
1016 return result;
1017 }
1018
1019 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1020 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1021 }
1022 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1023 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1024 }
1025 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1026 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1027 }
1028 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1029 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1030 }*/
1031 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1032 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1033 }
1034
1035 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1036 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1037 const char* flag_name = env->GetStringUTFChars(name, NULL);
1038 CHECK_JNI_EXCEPTION_(env, NULL);
1039 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1040 env->ReleaseStringUTFChars(name, flag_name);
1041 return result;
1042 }
1043
1044 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1045 Flag* flag = getVMFlag(thread, env, name);
1046 return (flag != NULL) && flag->is_constant_in_binary();
1047 WB_END
1048
1049 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1050 Flag* flag = getVMFlag(thread, env, name);
1051 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1052 WB_END
1053
1054 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1055 bool result;
1056 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1057 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1058 return booleanBox(thread, env, result);
1059 }
1060 return NULL;
1061 WB_END
1062
1063 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1064 int result;
1065 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1066 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1067 return longBox(thread, env, result);
1068 }
1069 return NULL;
1070 WB_END
1071
1072 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1073 uint result;
1074 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1075 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1076 return longBox(thread, env, result);
1077 }
1078 return NULL;
1079 WB_END
1080
1081 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1082 intx result;
1083 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1084 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1085 return longBox(thread, env, result);
1086 }
1087 return NULL;
1088 WB_END
1089
1090 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1091 uintx result;
1092 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1093 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1094 return longBox(thread, env, result);
1095 }
1096 return NULL;
1097 WB_END
1098
1099 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1100 uint64_t result;
1101 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1102 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1103 return longBox(thread, env, result);
1104 }
1105 return NULL;
1106 WB_END
1107
1108 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1109 uintx result;
1110 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1111 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1112 return longBox(thread, env, result);
1113 }
1114 return NULL;
1115 WB_END
1116
1117 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1118 double result;
1119 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1120 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1121 return doubleBox(thread, env, result);
1122 }
1123 return NULL;
1124 WB_END
1125
1126 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1127 ccstr ccstrResult;
1128 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1129 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1130 jstring result = env->NewStringUTF(ccstrResult);
1131 CHECK_JNI_EXCEPTION_(env, NULL);
1132 return result;
1133 }
1134 return NULL;
1135 WB_END
1136
1137 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1138 bool result = value == JNI_TRUE ? true : false;
1139 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1140 WB_END
1141
1142 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1143 int result = value;
1144 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1145 WB_END
1146
1147 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1148 uint result = value;
1149 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1150 WB_END
1151
1152 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1153 intx result = value;
1154 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1155 WB_END
1156
1157 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1158 uintx result = value;
1159 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1160 WB_END
1161
1162 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1163 uint64_t result = value;
1164 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1165 WB_END
1166
1167 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1168 size_t result = value;
1169 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1170 WB_END
1171
1172 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1173 double result = value;
1174 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1175 WB_END
1176
1177 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1178 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1179 const char* ccstrValue;
1180 if (value == NULL) {
1181 ccstrValue = NULL;
1182 }
1183 else {
1184 ccstrValue = env->GetStringUTFChars(value, NULL);
1185 CHECK_JNI_EXCEPTION(env);
1186 }
1187 ccstr ccstrResult = ccstrValue;
1188 bool needFree;
1189 {
1190 ThreadInVMfromNative ttvfn(thread); // back to VM
1191 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1192 }
1193 if (value != NULL) {
1194 env->ReleaseStringUTFChars(value, ccstrValue);
1195 }
1196 if (needFree) {
1197 FREE_C_HEAP_ARRAY(char, ccstrResult);
1198 }
1199 WB_END
1200
1201 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1202 WhiteBox::compilation_locked = true;
1203 WB_END
1204
1205 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1206 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1207 WhiteBox::compilation_locked = false;
1208 mo.notify_all();
1209 WB_END
1210
1211 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1212 // Force a code cache sweep and block until it finished
1213 NMethodSweeper::force_sweep();
1214 WB_END
1215
1216 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1217 ResourceMark rm(THREAD);
1218 int len;
1219 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1220 return (StringTable::lookup(name, len) != NULL);
1221 WB_END
1222
1223 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1224 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1225 Universe::heap()->collect(GCCause::_wb_full_gc);
1226 #if INCLUDE_ALL_GCS
1227 if (UseG1GC) {
1228 // Needs to be cleared explicitly for G1
1229 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1230 }
1231 #endif // INCLUDE_ALL_GCS
1232 WB_END
1233
1234 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1235 Universe::heap()->collect(GCCause::_wb_young_gc);
1236 WB_END
1237
1238 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1239 // static+volatile in order to force the read to happen
1240 // (not be eliminated by the compiler)
1241 static char c;
1242 static volatile char* p;
1243
1244 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1245 if (p == NULL) {
1246 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1247 }
1248
1249 c = *p;
1250 WB_END
1251
1252 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1253 const char* features = VM_Version::features_string();
1254 ThreadToNativeFromVM ttn(thread);
1255 jstring features_string = env->NewStringUTF(features);
1256
1257 CHECK_JNI_EXCEPTION_(env, NULL);
1258
1259 return features_string;
1260 WB_END
1261
1262 int WhiteBox::get_blob_type(const CodeBlob* code) {
1263 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1264 if (code->is_aot()) {
1265 return -1;
1266 }
1267 return CodeCache::get_code_heap(code)->code_blob_type();
1268 }
1269
1270 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1271 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1272 return CodeCache::get_code_heap(blob_type);
1273 }
1274
1275 struct CodeBlobStub {
1276 CodeBlobStub(const CodeBlob* blob) :
1277 name(os::strdup(blob->name())),
1278 size(blob->size()),
1279 blob_type(WhiteBox::get_blob_type(blob)),
1280 address((jlong) blob) { }
1281 ~CodeBlobStub() { os::free((void*) name); }
1282 const char* const name;
1283 const jint size;
1284 const jint blob_type;
1285 const jlong address;
1286 };
1287
1288 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1289 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1290 CHECK_JNI_EXCEPTION_(env, NULL);
1291 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1292
1293 jstring name = env->NewStringUTF(cb->name);
1294 CHECK_JNI_EXCEPTION_(env, NULL);
1295 env->SetObjectArrayElement(result, 0, name);
1296
1297 jobject obj = integerBox(thread, env, cb->size);
1298 CHECK_JNI_EXCEPTION_(env, NULL);
1299 env->SetObjectArrayElement(result, 1, obj);
1300
1301 obj = integerBox(thread, env, cb->blob_type);
1302 CHECK_JNI_EXCEPTION_(env, NULL);
1303 env->SetObjectArrayElement(result, 2, obj);
1304
1305 obj = longBox(thread, env, cb->address);
1306 CHECK_JNI_EXCEPTION_(env, NULL);
1307 env->SetObjectArrayElement(result, 3, obj);
1308
1309 return result;
1310 }
1311
1312 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1313 ResourceMark rm(THREAD);
1314 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1315 CHECK_JNI_EXCEPTION_(env, NULL);
1316 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1317 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1318 jobjectArray result = NULL;
1319 if (code == NULL) {
1320 return result;
1321 }
1322 int comp_level = code->comp_level();
1323 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1324
1325 ThreadToNativeFromVM ttn(thread);
1326 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1327 CHECK_JNI_EXCEPTION_(env, NULL);
1328 result = env->NewObjectArray(5, clazz, NULL);
1329 if (result == NULL) {
1330 return result;
1331 }
1332
1333 CodeBlobStub stub(code);
1334 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1335 CHECK_JNI_EXCEPTION_(env, NULL);
1336 env->SetObjectArrayElement(result, 0, codeBlob);
1337
1338 jobject level = integerBox(thread, env, comp_level);
1339 CHECK_JNI_EXCEPTION_(env, NULL);
1340 env->SetObjectArrayElement(result, 1, level);
1341
1342 jbyteArray insts = env->NewByteArray(insts_size);
1343 CHECK_JNI_EXCEPTION_(env, NULL);
1344 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1345 env->SetObjectArrayElement(result, 2, insts);
1346
1347 jobject id = integerBox(thread, env, code->compile_id());
1348 CHECK_JNI_EXCEPTION_(env, NULL);
1349 env->SetObjectArrayElement(result, 3, id);
1350
1351 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1352 CHECK_JNI_EXCEPTION_(env, NULL);
1353 env->SetObjectArrayElement(result, 4, entry_point);
1354
1355 return result;
1356 WB_END
1357
1358 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1359 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1360 BufferBlob* blob;
1361 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1362 if (full_size < size) {
1363 full_size += align_up(size - full_size, oopSize);
1364 }
1365 {
1366 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1367 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1368 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1369 }
1370 // Track memory usage statistic after releasing CodeCache_lock
1371 MemoryService::track_code_cache_memory_usage();
1372 return blob;
1373 }
1374
1375 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1376 if (size < 0) {
1377 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1378 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1379 }
1380 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1381 WB_END
1382
1383 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1384 if (addr == 0) {
1385 return;
1386 }
1387 BufferBlob::free((BufferBlob*) addr);
1388 WB_END
1389
1390 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1391 ResourceMark rm;
1392 GrowableArray<CodeBlobStub*> blobs;
1393 {
1394 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1395 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1396 if (heap == NULL) {
1397 return NULL;
1398 }
1399 for (CodeBlob* cb = (CodeBlob*) heap->first();
1400 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1401 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1402 new (stub) CodeBlobStub(cb);
1403 blobs.append(stub);
1404 }
1405 }
1406 if (blobs.length() == 0) {
1407 return NULL;
1408 }
1409 ThreadToNativeFromVM ttn(thread);
1410 jobjectArray result = NULL;
1411 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1412 CHECK_JNI_EXCEPTION_(env, NULL);
1413 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1414 CHECK_JNI_EXCEPTION_(env, NULL);
1415 if (result == NULL) {
1416 return result;
1417 }
1418 int i = 0;
1419 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1420 it != blobs.end(); ++it) {
1421 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1422 CHECK_JNI_EXCEPTION_(env, NULL);
1423 env->SetObjectArrayElement(result, i, obj);
1424 CHECK_JNI_EXCEPTION_(env, NULL);
1425 ++i;
1426 }
1427 return result;
1428 WB_END
1429
1430 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1431 return CompileBroker::get_compilation_activity_mode();
1432 WB_END
1433
1434 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1435 if (addr == 0) {
1436 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1437 "WB_GetCodeBlob: addr is null");
1438 }
1439 ThreadToNativeFromVM ttn(thread);
1440 CodeBlobStub stub((CodeBlob*) addr);
1441 return codeBlob2objectArray(thread, env, &stub);
1442 WB_END
1443
1444 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1445 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1446 CHECK_JNI_EXCEPTION_(env, 0);
1447 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1448 return (jlong) mh->method_data();
1449 WB_END
1450
1451 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1452 return (jlong) Thread::current()->stack_size();
1453 WB_END
1454
1455 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1456 JavaThread* t = JavaThread::current();
1457 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1458 WB_END
1459
1460
1461 int WhiteBox::array_bytes_to_length(size_t bytes) {
1462 return Array<u1>::bytes_to_length(bytes);
1463 }
1464
1465 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1466 if (size < 0) {
1467 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1468 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1469 }
1470
1471 oop class_loader_oop = JNIHandles::resolve(class_loader);
1472 ClassLoaderData* cld = class_loader_oop != NULL
1473 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1474 : ClassLoaderData::the_null_class_loader_data();
1475
1476 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1477
1478 return (jlong)(uintptr_t)metadata;
1479 WB_END
1480
1481 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1482 oop class_loader_oop = JNIHandles::resolve(class_loader);
1483 ClassLoaderData* cld = class_loader_oop != NULL
1484 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1485 : ClassLoaderData::the_null_class_loader_data();
1486
1487 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1488 WB_END
1489
1490 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1491 jstring version, jstring location, jobjectArray packages))
1492 ResourceMark rm(THREAD);
1493
1494 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1495 objArrayHandle packages_h(THREAD, packages_oop);
1496 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1497
1498 char** pkgs = NULL;
1499 if (num_packages > 0) {
1500 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1501 for (int x = 0; x < num_packages; x++) {
1502 oop pkg_str = packages_h->obj_at(x);
1503 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1504 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1505 err_msg("Bad package name"));
1506 }
1507 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1508 }
1509 }
1510 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1511 WB_END
1512
1513 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1514 ResourceMark rm(THREAD);
1515 char* package_name = NULL;
1516 if (package != NULL) {
1517 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1518 }
1519 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1520 WB_END
1521
1522 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1523 ResourceMark rm(THREAD);
1524 char* package_name = NULL;
1525 if (package != NULL) {
1526 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1527 }
1528 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1529 WB_END
1530
1531 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1532 ResourceMark rm(THREAD);
1533 char* package_name = NULL;
1534 if (package != NULL) {
1535 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1536 }
1537 Modules::add_module_exports(module, package_name, NULL, CHECK);
1538 WB_END
1539
1540 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1541 Modules::add_reads_module(from_module, source_module, CHECK);
1542 WB_END
1543
1544 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1545 if (inc < 0) {
1546 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1547 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1548 }
1549
1550 jlong max_size_t = (jlong) ((size_t) -1);
1551 if (inc > max_size_t) {
1552 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1553 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1554 }
1555
1556 size_t new_cap_until_GC = 0;
1557 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1558 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1559 if (!success) {
1560 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1561 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1562 "due to contention with another thread");
1563 }
1564 return (jlong) new_cap_until_GC;
1565 WB_END
1566
1567 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1568 return (jlong) MetaspaceGC::capacity_until_GC();
1569 WB_END
1570
1571 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1572 return MetaspaceGC::should_concurrent_collect();
1573 WB_END
1574
1575 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1576 return (jlong)Metaspace::reserve_alignment();
1577 WB_END
1578
1579 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1580 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1581 Monitor::_safepoint_check_always :
1582 Monitor::_safepoint_check_never;
1583 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1584 attemptedNoSafepointValue == JNI_TRUE);
1585 WB_END
1586
1587 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1588 oop obj_oop = JNIHandles::resolve(obj);
1589 return (jboolean) obj_oop->mark()->has_monitor();
1590 WB_END
1591
1592 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1593 VM_ForceSafepoint force_safepoint_op;
1594 VMThread::execute(&force_safepoint_op);
1595 WB_END
1596
1597 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1598 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1599 return (jlong) ik->constants();
1600 WB_END
1601
1602 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1603 return ConstantPool::CPCACHE_INDEX_TAG;
1604 WB_END
1605
1606 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1607 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1608 ConstantPool* cp = ik->constants();
1609 if (cp->cache() == NULL) {
1610 return -1;
1611 }
1612 return cp->cache()->length();
1613 WB_END
1614
1615 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1616 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1617 ConstantPool* cp = ik->constants();
1618 if (cp->cache() == NULL) {
1619 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1620 }
1621 jint cpci = index;
1622 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1623 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1624 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1625 }
1626 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1627 return cpi;
1628 WB_END
1629
1630 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1631 return ConstantPool::encode_invokedynamic_index(index);
1632 WB_END
1633
1634 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1635 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1636 VMThread::execute(&clear_ics);
1637 WB_END
1638
1639 template <typename T>
1640 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1641 assert(value != NULL, "sanity");
1642 if (method == NULL || name == NULL) {
1643 return false;
1644 }
1645 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1646 CHECK_JNI_EXCEPTION_(env, false);
1647 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1648 // can't be in VM when we call JNI
1649 ThreadToNativeFromVM ttnfv(thread);
1650 const char* flag_name = env->GetStringUTFChars(name, NULL);
1651 CHECK_JNI_EXCEPTION_(env, false);
1652 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1653 env->ReleaseStringUTFChars(name, flag_name);
1654 return result;
1655 }
1656
1657 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1658 bool result;
1659 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1660 // can't be in VM when we call JNI
1661 ThreadToNativeFromVM ttnfv(thread);
1662 return booleanBox(thread, env, result);
1663 }
1664 return NULL;
1665 WB_END
1666
1667 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1668 intx result;
1669 if (GetMethodOption <intx> (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_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1678 uintx result;
1679 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1680 // can't be in VM when we call JNI
1681 ThreadToNativeFromVM ttnfv(thread);
1682 return longBox(thread, env, result);
1683 }
1684 return NULL;
1685 WB_END
1686
1687 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1688 double result;
1689 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1690 // can't be in VM when we call JNI
1691 ThreadToNativeFromVM ttnfv(thread);
1692 return doubleBox(thread, env, result);
1693 }
1694 return NULL;
1695 WB_END
1696
1697 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1698 ccstr ccstrResult;
1699 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1700 // can't be in VM when we call JNI
1701 ThreadToNativeFromVM ttnfv(thread);
1702 jstring result = env->NewStringUTF(ccstrResult);
1703 CHECK_JNI_EXCEPTION_(env, NULL);
1704 return result;
1705 }
1706 return NULL;
1707 WB_END
1708
1709 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1710 oop obj_oop = JNIHandles::resolve(obj);
1711 return oopDesc::is_archive_object(obj_oop);
1712 WB_END
1713
1714 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1715 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1716 WB_END
1717
1718 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1719 return !StringTable::shared_string_mapped();
1720 WB_END
1721
1722 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1723 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1724 if (k->is_instance_klass()) {
1725 InstanceKlass *ik = InstanceKlass::cast(k);
1726 ConstantPool *cp = ik->constants();
1727 objArrayOop refs = cp->resolved_references();
1728 return (jobject)JNIHandles::make_local(env, refs);
1729 } else {
1730 return NULL;
1731 }
1732 WB_END
1733
1734 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1735 return MetaspaceShared::open_archive_heap_region_mapped();
1736 WB_END
1737
1738 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1739 #if INCLUDE_CDS
1740 # ifdef _LP64
1741 if (!UseCompressedOops || !UseCompressedClassPointers) {
1742 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1743 return false;
1744 }
1745 # endif // _LP64
1746 return true;
1747 #else
1748 return false;
1749 #endif // INCLUDE_CDS
1750 WB_END
1751
1752 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1753 return MetaspaceShared::is_heap_object_archiving_allowed();
1754 WB_END
1755
1756
1757 #if INCLUDE_CDS
1758
1759 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1760 ResourceMark rm;
1761 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1762 int result = CDSOffsets::find_offset(c_name);
1763 return (jint)result;
1764 WB_END
1765
1766 #endif // INCLUDE_CDS
1767
1768 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1769 class TraceSelfClosure : public ThreadClosure {
1770 jint _num_threads_completed;
1771
1772 void do_thread(Thread* th) {
1773 assert(th->is_Java_thread(), "sanity");
1774 JavaThread* jt = (JavaThread*)th;
1775 ResourceMark rm;
1776
1777 jt->print_on(tty);
1778 jt->print_stack_on(tty);
1779 tty->cr();
1780 Atomic::inc(&_num_threads_completed);
1781 }
1782
1783 public:
1784 TraceSelfClosure() : _num_threads_completed(0) {}
1785
1786 jint num_threads_completed() const { return _num_threads_completed; }
1787 };
1788 TraceSelfClosure tsc;
1789
1790 if (all_threads) {
1791 Handshake::execute(&tsc);
1792 } else {
1793 oop thread_oop = JNIHandles::resolve(thread_handle);
1794 if (thread_oop != NULL) {
1795 JavaThread* target = java_lang_Thread::thread(thread_oop);
1796 Handshake::execute(&tsc, target);
1797 }
1798 }
1799 return tsc.num_threads_completed();
1800 WB_END
1801
1802 //Some convenience methods to deal with objects from java
1803 int WhiteBox::offset_for_field(const char* field_name, oop object,
1804 Symbol* signature_symbol) {
1805 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1806 Thread* THREAD = Thread::current();
1807
1808 //Get the class of our object
1809 Klass* arg_klass = object->klass();
1810 //Turn it into an instance-klass
1811 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1812
1813 //Create symbols to look for in the class
1814 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1815 THREAD);
1816
1817 //To be filled in with an offset of the field we're looking for
1818 fieldDescriptor fd;
1819
1820 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1821 if (res == NULL) {
1822 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1823 name_symbol->as_C_string());
1824 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1825 }
1826
1827 //fetch the field at the offset we've found
1828 int dest_offset = fd.offset();
1829
1830 return dest_offset;
1831 }
1832
1833
1834 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1835 int offset = offset_for_field(field_name, object,
1836 vmSymbols::string_signature());
1837 oop string = object->obj_field(offset);
1838 if (string == NULL) {
1839 return NULL;
1840 }
1841 const char* ret = java_lang_String::as_utf8_string(string);
1842 return ret;
1843 }
1844
1845 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1846 int offset =
1847 offset_for_field(field_name, object, vmSymbols::bool_signature());
1848 bool ret = (object->bool_field(offset) == JNI_TRUE);
1849 return ret;
1850 }
1851
1852 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1853 ResourceMark rm;
1854 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1855
1856 // one by one registration natives for exception catching
1857 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1858 CHECK_JNI_EXCEPTION(env);
1859 for (int i = 0, n = method_count; i < n; ++i) {
1860 // Skip dummy entries
1861 if (method_array[i].fnPtr == NULL) continue;
1862 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1863 jthrowable throwable_obj = env->ExceptionOccurred();
1864 if (throwable_obj != NULL) {
1865 env->ExceptionClear();
1866 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1867 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1868 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1869 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1870 method_array[i].name, method_array[i].signature);
1871 }
1872 } else {
1873 // Registration failed unexpectedly.
1874 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1875 method_array[i].name, method_array[i].signature);
1876 env->UnregisterNatives(wbclass);
1877 break;
1878 }
1879 }
1880 }
1881 }
1882
1883 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1884 // can't be in VM when we call JNI
1885 ThreadToNativeFromVM ttnfv(thread);
1886 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1887 CHECK_JNI_EXCEPTION_(env, 0);
1888 int ret;
1889 {
1890 ThreadInVMfromNative ttvfn(thread); // back to VM
1891 ret = DirectivesParser::parse_string(dir, tty);
1892 }
1893 env->ReleaseStringUTFChars(compDirect, dir);
1894 // -1 for error parsing directive. Return 0 as number of directives added.
1895 if (ret == -1) {
1896 ret = 0;
1897 }
1898 return (jint) ret;
1899 WB_END
1900
1901 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1902 DirectivesStack::pop(count);
1903 WB_END
1904
1905 // Checks that the library libfile has the noexecstack bit set.
1906 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1907 jboolean ret = false;
1908 #ifdef LINUX
1909 // Can't be in VM when we call JNI.
1910 ThreadToNativeFromVM ttnfv(thread);
1911 const char* lf = env->GetStringUTFChars(libfile, NULL);
1912 CHECK_JNI_EXCEPTION_(env, 0);
1913 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1914 env->ReleaseStringUTFChars(libfile, lf);
1915 #endif
1916 return ret;
1917 WB_END
1918
1919 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1920 LINUX_ONLY(return OSContainer::is_containerized();)
1921 return false;
1922 WB_END
1923
1924 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1925 os::print_os_info(tty);
1926 WB_END
1927
1928 // Elf decoder
1929 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1930 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1931 ElfFile::_do_not_cache_elf_section = true;
1932 #endif
1933 WB_END
1934
1935
1936 #define CC (char*)
1937
1938 static JNINativeMethod methods[] = {
1939 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1940 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1941 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1942 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1943 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1944 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1945 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1946 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1947 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1948 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1949 {CC"parseCommandLine0",
1950 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1951 (void*) &WB_ParseCommandLine
1952 },
1953 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1954 (void*)&WB_AddToBootstrapClassLoaderSearch},
1955 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1956 (void*)&WB_AddToSystemClassLoaderSearch},
1957 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1958 (void*)&WB_GetCompressedOopsMaxHeapSize},
1959 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1960 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1961 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1962 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1963 #if INCLUDE_CDS
1964 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1965 #endif
1966 #if INCLUDE_ALL_GCS
1967 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1968 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1969 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1970 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1971 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1972 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1973 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1974 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1975 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1976 (void*)&WB_G1AuxiliaryMemoryUsage },
1977 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1978 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1979 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
1980 #endif // INCLUDE_ALL_GCS
1981 #if INCLUDE_NMT
1982 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1983 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1984 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1985 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1986 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
1987 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1988 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1989 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1990 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1991 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1992 #endif // INCLUDE_NMT
1993 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1994 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1995 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1996 (void*)&WB_DeoptimizeMethod },
1997 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1998 (void*)&WB_IsMethodCompiled },
1999 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2000 (void*)&WB_IsMethodCompilable},
2001 {CC"isMethodQueuedForCompilation0",
2002 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2003 {CC"isIntrinsicAvailable0",
2004 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2005 (void*)&WB_IsIntrinsicAvailable},
2006 {CC"makeMethodNotCompilable0",
2007 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2008 {CC"testSetDontInlineMethod0",
2009 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2010 {CC"getMethodCompilationLevel0",
2011 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2012 {CC"getMethodEntryBci0",
2013 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2014 {CC"getCompileQueueSize",
2015 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2016 {CC"testSetForceInlineMethod0",
2017 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2018 {CC"enqueueMethodForCompilation0",
2019 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2020 {CC"enqueueInitializerForCompilation0",
2021 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2022 {CC"clearMethodState0",
2023 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2024 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2025 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2026 {CC"matchesMethod",
2027 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2028 (void*)&WB_MatchesMethod},
2029 {CC"matchesInline",
2030 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2031 (void*)&WB_MatchesInline},
2032 {CC"shouldPrintAssembly",
2033 CC"(Ljava/lang/reflect/Executable;I)Z",
2034 (void*)&WB_ShouldPrintAssembly},
2035
2036 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2037 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2038 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2039 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2040 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2041 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2042 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2043 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2044 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2045 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2046 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2047 (void*)&WB_SetStringVMFlag},
2048 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2049 (void*)&WB_GetBooleanVMFlag},
2050 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2051 (void*)&WB_GetIntVMFlag},
2052 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2053 (void*)&WB_GetUintVMFlag},
2054 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2055 (void*)&WB_GetIntxVMFlag},
2056 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2057 (void*)&WB_GetUintxVMFlag},
2058 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2059 (void*)&WB_GetUint64VMFlag},
2060 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2061 (void*)&WB_GetSizeTVMFlag},
2062 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2063 (void*)&WB_GetDoubleVMFlag},
2064 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2065 (void*)&WB_GetStringVMFlag},
2066 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2067 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2068 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2069 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2070 {CC"allocateMetaspace",
2071 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2072 {CC"freeMetaspace",
2073 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2074 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2075 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2076 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2077 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2078 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2079 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2080 (void*)&WB_GetNMethod },
2081 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2082 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2083 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2084 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2085 {CC"getCompilationActivityMode",
2086 CC"()I", (void*)&WB_GetCompilationActivityMode},
2087 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2088 (void*)&WB_GetMethodData },
2089 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2090 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2091 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2092 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2093 (void*)&WB_DefineModule },
2094 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2095 (void*)&WB_AddModuleExports },
2096 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2097 (void*)&WB_AddReadsModule },
2098 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2099 (void*)&WB_AddModuleExportsToAllUnnamed },
2100 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2101 (void*)&WB_AddModuleExportsToAll },
2102 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2103 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2104 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2105 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2106 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2107 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2108 {CC"remapInstructionOperandFromCPCache0",
2109 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2110 {CC"encodeConstantPoolIndyIndex0",
2111 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2112 {CC"getMethodBooleanOption",
2113 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2114 (void*)&WB_GetMethodBooleaneOption},
2115 {CC"getMethodIntxOption",
2116 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2117 (void*)&WB_GetMethodIntxOption},
2118 {CC"getMethodUintxOption",
2119 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2120 (void*)&WB_GetMethodUintxOption},
2121 {CC"getMethodDoubleOption",
2122 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2123 (void*)&WB_GetMethodDoubleOption},
2124 {CC"getMethodStringOption",
2125 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2126 (void*)&WB_GetMethodStringOption},
2127 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2128 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2129 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2130 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2131 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2132 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2133 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2134
2135 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2136 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2137 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2138 (void*)&WB_AddCompilerDirective },
2139 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2140 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2141 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2142 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2143 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2144 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2145 (void*)&WB_GetConcurrentGCPhases},
2146 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2147 (void*)&WB_RequestConcurrentGCPhase},
2148 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2149 (void*)&WB_CheckLibSpecifiesNoexecstack},
2150 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2151 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2152 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2153 };
2154
2155
2156 #undef CC
2157
2158 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2159 {
2160 if (WhiteBoxAPI) {
2161 // Make sure that wbclass is loaded by the null classloader
2162 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2163 Handle loader(THREAD, ik->class_loader());
2164 if (loader.is_null()) {
2165 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2166 WhiteBox::set_used();
2167 }
2168 }
2169 }
2170 JVM_END