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.inline.hpp"
51 #include "runtime/arguments.hpp"
52 #include "runtime/compilationPolicy.hpp"
53 #include "runtime/deoptimization.hpp"
54 #include "runtime/frame.inline.hpp"
55 #include "runtime/handshake.hpp"
56 #include "runtime/interfaceSupport.inline.hpp"
57 #include "runtime/javaCalls.hpp"
58 #include "runtime/jniHandles.inline.hpp"
59 #include "runtime/os.hpp"
60 #include "runtime/sweeper.hpp"
61 #include "runtime/thread.hpp"
62 #include "runtime/threadSMR.hpp"
63 #include "runtime/vm_version.hpp"
64 #include "utilities/align.hpp"
65 #include "utilities/debug.hpp"
66 #include "utilities/elfFile.hpp"
67 #include "utilities/exceptions.hpp"
68 #include "utilities/macros.hpp"
69 #if INCLUDE_CDS
70 #include "prims/cdsoffsets.hpp"
71 #endif // INCLUDE_CDS
72 #if INCLUDE_ALL_GCS
73 #include "gc/g1/concurrentMarkThread.hpp"
74 #include "gc/g1/g1CollectedHeap.inline.hpp"
75 #include "gc/g1/g1ConcurrentMark.hpp"
76 #include "gc/g1/heapRegionRemSet.hpp"
77 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
78 #include "gc/parallel/adjoiningGenerations.hpp"
79 #endif // INCLUDE_ALL_GCS
80 #if INCLUDE_NMT
81 #include "services/mallocSiteTable.hpp"
82 #include "services/memTracker.hpp"
83 #include "utilities/nativeCallStack.hpp"
84 #endif // INCLUDE_NMT
85
86 #ifdef LINUX
87 #include "osContainer_linux.hpp"
88 #endif
89
90 #define SIZE_T_MAX_VALUE ((size_t) -1)
91
92 #define CHECK_JNI_EXCEPTION_(env, value) \
93 do { \
94 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
95 if (HAS_PENDING_EXCEPTION) { \
96 return(value); \
97 } \
98 } while (0)
99
100 #define CHECK_JNI_EXCEPTION(env) \
101 do { \
102 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
103 if (HAS_PENDING_EXCEPTION) { \
104 return; \
105 } \
106 } while (0)
107
108 bool WhiteBox::_used = false;
109 volatile bool WhiteBox::compilation_locked = false;
110
111 class VM_WhiteBoxOperation : public VM_Operation {
112 public:
113 VM_WhiteBoxOperation() { }
114 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
115 bool allow_nested_vm_operations() const { return true; }
116 };
117
118
119 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
120 return (jlong)(void*)JNIHandles::resolve(obj);
121 WB_END
122
123 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
124 return heapOopSize;
125 WB_END
126
127 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
128 return os::vm_page_size();
129 WB_END
130
131 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
132 return os::vm_allocation_granularity();
133 WB_END
134
135 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
136 return os::large_page_size();
137 WB_END
138
139 class WBIsKlassAliveClosure : public KlassClosure {
140 Symbol* _name;
141 bool _found;
142 public:
143 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
144
145 void do_klass(Klass* k) {
146 if (_found) return;
147 Symbol* ksym = k->name();
148 if (ksym->fast_compare(_name) == 0) {
149 _found = true;
150 }
151 }
152
153 bool found() const {
154 return _found;
155 }
156 };
157
158 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
159 oop h_name = JNIHandles::resolve(name);
160 if (h_name == NULL) return false;
161 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
162 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
163
164 WBIsKlassAliveClosure closure(sym);
165 ClassLoaderDataGraph::classes_do(&closure);
166
167 return closure.found();
168 WB_END
169
170 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
171 #if INCLUDE_JVMTI
172 ResourceMark rm;
173 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
174 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
175 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
176 assert(err == JVMTI_ERROR_NONE, "must not fail");
177 #endif
178 }
179 WB_END
180
181 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
182 #if INCLUDE_JVMTI
183 ResourceMark rm;
184 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
185 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
186 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
187 assert(err == JVMTI_ERROR_NONE, "must not fail");
188 #endif
189 }
190 WB_END
191
192
193 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
194 return (jlong)Arguments::max_heap_for_compressed_oops();
195 }
196 WB_END
197
198 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
199 CollectorPolicy * p = Universe::heap()->collector_policy();
200 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
201 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
202 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
203 p->space_alignment(), p->heap_alignment());
204 }
205 WB_END
206
207 #ifndef PRODUCT
208 // Forward declaration
209 void TestReservedSpace_test();
210 void TestReserveMemorySpecial_test();
211 void TestVirtualSpace_test();
212 void TestMetaspaceUtils_test();
213 #endif
214
215 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
216 #ifndef PRODUCT
217 TestReservedSpace_test();
218 TestReserveMemorySpecial_test();
219 TestVirtualSpace_test();
220 TestMetaspaceUtils_test();
221 #endif
222 WB_END
223
224 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
225 size_t granularity = os::vm_allocation_granularity();
226 ReservedHeapSpace rhs(100 * granularity, granularity, false);
227 VirtualSpace vs;
228 vs.initialize(rhs, 50 * granularity);
229
230 // Check if constraints are complied
231 if (!( UseCompressedOops && rhs.base() != NULL &&
232 Universe::narrow_oop_base() != NULL &&
233 Universe::narrow_oop_use_implicit_null_checks() )) {
234 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
235 "\tUseCompressedOops is %d\n"
236 "\trhs.base() is " PTR_FORMAT "\n"
237 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
238 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
239 UseCompressedOops,
240 p2i(rhs.base()),
241 p2i(Universe::narrow_oop_base()),
242 Universe::narrow_oop_use_implicit_null_checks());
243 return;
244 }
245 tty->print_cr("Reading from no access area... ");
246 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
247 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
248 WB_END
249
250 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
251 size_t magnitude, size_t iterations) {
252 size_t granularity = os::vm_allocation_granularity();
253 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
254 VirtualSpace vs;
255 if (!vs.initialize(rhs, 0)) {
256 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
257 return 3;
258 }
259
260 int seed = os::random();
261 tty->print_cr("Random seed is %d", seed);
262 os::init_random(seed);
263
264 for (size_t i = 0; i < iterations; i++) {
265
266 // Whether we will shrink or grow
267 bool shrink = os::random() % 2L == 0;
268
269 // Get random delta to resize virtual space
270 size_t delta = (size_t)os::random() % magnitude;
271
272 // If we are about to shrink virtual space below zero, then expand instead
273 if (shrink && vs.committed_size() < delta) {
274 shrink = false;
275 }
276
277 // Resizing by delta
278 if (shrink) {
279 vs.shrink_by(delta);
280 } else {
281 // If expanding fails expand_by will silently return false
282 vs.expand_by(delta, true);
283 }
284 }
285 return 0;
286 }
287
288 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
289 jlong reserved_space_size, jlong magnitude, jlong iterations))
290 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
291 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
292 iterations);
293 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
294 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
295 return 1;
296 }
297
298 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
299 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
300 if (sizeof(size_t) < sizeof(jlong)) {
301 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
302 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
303 || iterations > size_t_max_value) {
304 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
305 return 2;
306 }
307 }
308
309 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
310 (size_t) magnitude, (size_t) iterations);
311 WB_END
312
313 static const jint serial_code = 1;
314 static const jint parallel_code = 2;
315 static const jint cms_code = 4;
316 static const jint g1_code = 8;
317
318 WB_ENTRY(jint, WB_CurrentGC(JNIEnv* env, jobject o, jobject obj))
319 if (UseSerialGC) {
320 return serial_code;
321 } else if (UseParallelGC || UseParallelOldGC) {
322 return parallel_code;
323 } if (UseConcMarkSweepGC) {
324 return cms_code;
325 } else if (UseG1GC) {
326 return g1_code;
327 }
328 ShouldNotReachHere();
329 return 0;
330 WB_END
331
332 WB_ENTRY(jint, WB_AllSupportedGC(JNIEnv* env, jobject o, jobject obj))
333 #if INCLUDE_ALL_GCS
334 return serial_code | parallel_code | cms_code | g1_code;
335 #else
336 return serial_code;
337 #endif // INCLUDE_ALL_GCS
338 WB_END
339
340 WB_ENTRY(jboolean, WB_GCSelectedByErgo(JNIEnv* env, jobject o, jobject obj))
341 if (UseSerialGC) {
342 return FLAG_IS_ERGO(UseSerialGC);
343 } else if (UseParallelGC) {
344 return FLAG_IS_ERGO(UseParallelGC);
345 } else if (UseParallelOldGC) {
346 return FLAG_IS_ERGO(UseParallelOldGC);
347 } else if (UseConcMarkSweepGC) {
348 return FLAG_IS_ERGO(UseConcMarkSweepGC);
349 } else if (UseG1GC) {
350 return FLAG_IS_ERGO(UseG1GC);
351 }
352 ShouldNotReachHere();
353 return false;
354 WB_END
355
356 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
357 oop p = JNIHandles::resolve(obj);
358 #if INCLUDE_ALL_GCS
359 if (UseG1GC) {
360 G1CollectedHeap* g1 = G1CollectedHeap::heap();
361 const HeapRegion* hr = g1->heap_region_containing(p);
362 if (hr == NULL) {
363 return false;
364 }
365 return !(hr->is_young());
366 } else if (UseParallelGC) {
367 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
368 return !psh->is_in_young(p);
369 }
370 #endif // INCLUDE_ALL_GCS
371 GenCollectedHeap* gch = GenCollectedHeap::heap();
372 return !gch->is_in_young(p);
373 WB_END
374
375 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
376 oop p = JNIHandles::resolve(obj);
377 return p->size() * HeapWordSize;
378 WB_END
379
380 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
381 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
382 return (jlong)alignment;
383 WB_END
384
385 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
386 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
387 return (jlong)alignment;
388 WB_END
389
390 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
391 return Universe::heap()->supports_concurrent_phase_control();
392 WB_END
393
394 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
395 const char* const* phases = Universe::heap()->concurrent_phases();
396 jint nphases = 0;
397 for ( ; phases[nphases] != NULL; ++nphases) ;
398
399 ResourceMark rm(thread);
400 ThreadToNativeFromVM ttn(thread);
401 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
402 CHECK_JNI_EXCEPTION_(env, NULL);
403
404 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
405 CHECK_JNI_EXCEPTION_(env, NULL);
406
407 // If push fails, return with pending exception.
408 if (env->PushLocalFrame(nphases) < 0) return NULL;
409 for (jint i = 0; i < nphases; ++i) {
410 jstring phase = env->NewStringUTF(phases[i]);
411 CHECK_JNI_EXCEPTION_(env, NULL);
412 env->SetObjectArrayElement(result, i, phase);
413 CHECK_JNI_EXCEPTION_(env, NULL);
414 }
415 env->PopLocalFrame(NULL);
416
417 return result;
418 WB_END
419
420 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
421 Handle h_name(THREAD, JNIHandles::resolve(name));
422 ResourceMark rm;
423 const char* c_name = java_lang_String::as_utf8_string(h_name());
424 return Universe::heap()->request_concurrent_phase(c_name);
425 WB_END
426
427 #if INCLUDE_ALL_GCS
428 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
429 if (UseG1GC) {
430 G1CollectedHeap* g1 = G1CollectedHeap::heap();
431 oop result = JNIHandles::resolve(obj);
432 const HeapRegion* hr = g1->heap_region_containing(result);
433 return hr->is_humongous();
434 }
435 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
436 WB_END
437
438 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
439 if (UseG1GC) {
440 G1CollectedHeap* g1 = G1CollectedHeap::heap();
441 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
442 return hr->is_humongous();
443 }
444 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
445 WB_END
446
447 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
448 if (UseG1GC) {
449 G1CollectedHeap* g1 = G1CollectedHeap::heap();
450 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
451 return hr->is_free();
452 }
453 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
454 WB_END
455
456 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
457 if (UseG1GC) {
458 G1CollectedHeap* g1 = G1CollectedHeap::heap();
459 size_t nr = g1->max_regions();
460 return (jlong)nr;
461 }
462 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
463 WB_END
464
465 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
466 if (UseG1GC) {
467 G1CollectedHeap* g1 = G1CollectedHeap::heap();
468 size_t nr = g1->num_free_regions();
469 return (jlong)nr;
470 }
471 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
472 WB_END
473
474 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
475 if (UseG1GC) {
476 G1CollectedHeap* g1h = G1CollectedHeap::heap();
477 return g1h->concurrent_mark()->cm_thread()->during_cycle();
478 }
479 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
480 WB_END
481
482 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
483 if (UseG1GC) {
484 G1CollectedHeap* g1h = G1CollectedHeap::heap();
485 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
486 g1h->collect(GCCause::_wb_conc_mark);
487 return true;
488 }
489 return false;
490 }
491 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
492 WB_END
493
494 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
495 if (UseG1GC) {
496 return (jint)HeapRegion::GrainBytes;
497 }
498 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
499 WB_END
500
501 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
502 #if INCLUDE_ALL_GCS
503 if (UseParallelGC) {
504 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
505 }
506 #endif // INCLUDE_ALL_GCS
507 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
508 WB_END
509
510 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
511 #if INCLUDE_ALL_GCS
512 if (UseParallelGC) {
513 return ParallelScavengeHeap::heap()->generation_alignment();
514 }
515 #endif // INCLUDE_ALL_GCS
516 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
517 WB_END
518
519 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
520 #if INCLUDE_ALL_GCS
521 if (UseG1GC) {
522 ResourceMark rm(THREAD);
523 G1CollectedHeap* g1h = G1CollectedHeap::heap();
524 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
525 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
526 return JNIHandles::make_local(env, h());
527 }
528 #endif // INCLUDE_ALL_GCS
529 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
530 WB_END
531
532 class OldRegionsLivenessClosure: public HeapRegionClosure {
533
534 private:
535 const int _liveness;
536 size_t _total_count;
537 size_t _total_memory;
538 size_t _total_memory_to_free;
539
540 public:
541 OldRegionsLivenessClosure(int liveness) :
542 _liveness(liveness),
543 _total_count(0),
544 _total_memory(0),
545 _total_memory_to_free(0) { }
546
547 size_t total_count() { return _total_count; }
548 size_t total_memory() { return _total_memory; }
549 size_t total_memory_to_free() { return _total_memory_to_free; }
550
551 bool do_heap_region(HeapRegion* r) {
552 if (r->is_old()) {
553 size_t prev_live = r->marked_bytes();
554 size_t live = r->live_bytes();
555 size_t size = r->used();
556 size_t reg_size = HeapRegion::GrainBytes;
557 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
558 _total_memory += size;
559 ++_total_count;
560 if (size == reg_size) {
561 // we don't include non-full regions since they are unlikely included in mixed gc
562 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
563 _total_memory_to_free += size - prev_live;
564 }
565 }
566 }
567 return false;
568 }
569 };
570
571
572 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
573 if (!UseG1GC) {
574 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
575 }
576 if (liveness < 0) {
577 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
578 }
579
580 G1CollectedHeap* g1h = G1CollectedHeap::heap();
581 OldRegionsLivenessClosure rli(liveness);
582 g1h->heap_region_iterate(&rli);
583
584 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
585 result->long_at_put(0, rli.total_count());
586 result->long_at_put(1, rli.total_memory());
587 result->long_at_put(2, rli.total_memory_to_free());
588 return (jlongArray) JNIHandles::make_local(env, result);
589 WB_END
590
591 #endif // INCLUDE_ALL_GCS
592
593 #if INCLUDE_NMT
594 // Alloc memory using the test memory type so that we can use that to see if
595 // NMT picks it up correctly
596 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
597 jlong addr = 0;
598 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
599 return addr;
600 WB_END
601
602 // Alloc memory with pseudo call stack. The test can create psudo malloc
603 // allocation site to stress the malloc tracking.
604 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
605 address pc = (address)(size_t)pseudo_stack;
606 NativeCallStack stack(&pc, 1);
607 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
608 WB_END
609
610 // Free the memory allocated by NMTAllocTest
611 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
612 os::free((void*)(uintptr_t)mem);
613 WB_END
614
615 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
616 jlong addr = 0;
617
618 addr = (jlong)(uintptr_t)os::reserve_memory(size);
619 MemTracker::record_virtual_memory_type((address)addr, mtTest);
620
621 return addr;
622 WB_END
623
624 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
625 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
626 MemTracker::record_virtual_memory_type((address)addr, mtTest);
627
628 return addr;
629 WB_END
630
631 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
632 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
633 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
634 WB_END
635
636 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
637 os::uncommit_memory((char *)(uintptr_t)addr, size);
638 WB_END
639
640 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
641 os::release_memory((char *)(uintptr_t)addr, size);
642 WB_END
643
644 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
645 // Test that we can downgrade NMT levels but not upgrade them.
646 if (MemTracker::tracking_level() == NMT_off) {
647 MemTracker::transition_to(NMT_off);
648 return MemTracker::tracking_level() == NMT_off;
649 } else {
650 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
651 MemTracker::transition_to(NMT_summary);
652 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
653
654 // Can't go to detail once NMT is set to summary.
655 MemTracker::transition_to(NMT_detail);
656 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
657
658 // Shutdown sets tracking level to minimal.
659 MemTracker::shutdown();
660 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
661
662 // Once the tracking level is minimal, we cannot increase to summary.
663 // The code ignores this request instead of asserting because if the malloc site
664 // table overflows in another thread, it tries to change the code to summary.
665 MemTracker::transition_to(NMT_summary);
666 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
667
668 // Really can never go up to detail, verify that the code would never do this.
669 MemTracker::transition_to(NMT_detail);
670 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
671 return MemTracker::tracking_level() == NMT_minimal;
672 }
673 WB_END
674
675 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
676 int hash_size = MallocSiteTable::hash_buckets();
677 assert(hash_size > 0, "NMT hash_size should be > 0");
678 return (jint)hash_size;
679 WB_END
680 #endif // INCLUDE_NMT
681
682 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
683 assert(method != NULL, "method should not be null");
684 ThreadToNativeFromVM ttn(thread);
685 return env->FromReflectedMethod(method);
686 }
687
688 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
689 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
690 private:
691 int _result;
692 const bool _make_not_entrant;
693 public:
694 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
695 _result(0), _make_not_entrant(make_not_entrant) { }
696 int result() const { return _result; }
697
698 void doit() {
699 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
700 if (t->has_last_Java_frame()) {
701 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
702 frame* f = fst.current();
703 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
704 RegisterMap* reg_map = fst.register_map();
705 Deoptimization::deoptimize(t, *f, reg_map);
706 if (_make_not_entrant) {
707 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
708 assert(cm != NULL, "sanity check");
709 cm->make_not_entrant();
710 }
711 ++_result;
712 }
713 }
714 }
715 }
716 }
717 };
718
719 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
720 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
721 VMThread::execute(&op);
722 return op.result();
723 WB_END
724
725 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
726 MutexLockerEx mu(Compile_lock);
727 CodeCache::mark_all_nmethods_for_deoptimization();
728 VM_Deoptimize op;
729 VMThread::execute(&op);
730 WB_END
731
732 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
733 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
734 int result = 0;
735 CHECK_JNI_EXCEPTION_(env, result);
736 MutexLockerEx mu(Compile_lock);
737 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
738 if (is_osr) {
739 result += mh->mark_osr_nmethods();
740 } else if (mh->code() != NULL) {
741 mh->code()->mark_for_deoptimization();
742 ++result;
743 }
744 result += CodeCache::mark_for_deoptimization(mh());
745 if (result > 0) {
746 VM_Deoptimize op;
747 VMThread::execute(&op);
748 }
749 return result;
750 WB_END
751
752 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
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 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
758 if (code == NULL) {
759 return JNI_FALSE;
760 }
761 return (code->is_alive() && !code->is_marked_for_deoptimization());
762 WB_END
763
764 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
765 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
766 return false;
767 }
768 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
769 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
770 MutexLockerEx mu(Compile_lock);
771 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
772 if (is_osr) {
773 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
774 } else {
775 return CompilationPolicy::can_be_compiled(mh, comp_level);
776 }
777 WB_END
778
779 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
780 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
781 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
782 MutexLockerEx mu(Compile_lock);
783 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
784 return mh->queued_for_compilation();
785 WB_END
786
787 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
788 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
789 return false; // Intrinsic is not available on a non-existent compilation level.
790 }
791 jmethodID method_id, compilation_context_id;
792 method_id = reflected_method_to_jmid(thread, env, method);
793 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
794 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
795
796 DirectiveSet* directive;
797 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
798 assert(comp != NULL, "compiler not available");
799 if (compilation_context != NULL) {
800 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
801 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
802 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
803 directive = DirectivesStack::getMatchingDirective(cch, comp);
804 } else {
805 // Calling with NULL matches default directive
806 directive = DirectivesStack::getDefaultDirective(comp);
807 }
808 bool result = comp->is_intrinsic_available(mh, directive);
809 DirectivesStack::release(directive);
810 return result;
811 WB_END
812
813 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
814 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
815 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
816 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
817 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
818 return (code != NULL ? code->comp_level() : CompLevel_none);
819 WB_END
820
821 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
822 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
823 CHECK_JNI_EXCEPTION(env);
824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
825 if (is_osr) {
826 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
827 } else {
828 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
829 }
830 WB_END
831
832 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
833 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
834 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
835 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
836 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
837 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
838 WB_END
839
840 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
841 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
842 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
843 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
844 bool result = mh->dont_inline();
845 mh->set_dont_inline(value == JNI_TRUE);
846 return result;
847 WB_END
848
849 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
850 if (comp_level == CompLevel_any) {
851 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
852 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
853 } else {
854 return CompileBroker::queue_size(comp_level);
855 }
856 WB_END
857
858 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
859 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
860 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
861 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
862 bool result = mh->force_inline();
863 mh->set_force_inline(value == JNI_TRUE);
864 return result;
865 WB_END
866
867 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
868 // Screen for unavailable/bad comp level or null method
869 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
870 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier) || comp == NULL) {
871 return false;
872 }
873
874 // Check if compilation is blocking
875 methodHandle mh(THREAD, method);
876 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
877 bool is_blocking = !directive->BackgroundCompilationOption;
878 DirectivesStack::release(directive);
879
880 // Compile method and check result
881 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
882 MutexLockerEx mu(Compile_lock);
883 return ((!is_blocking && mh->queued_for_compilation()) || nm != NULL);
884 }
885
886 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
887 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
888 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
889 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
890 WB_END
891
892 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
893 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
894 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
895 WB_END
896
897 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
898 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
899 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
900
901 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
902 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
903 bool result = directive->PrintAssemblyOption;
904 DirectivesStack::release(directive);
905
906 return result;
907 WB_END
908
909 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
910 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
911 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
912
913 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
914
915 ResourceMark rm;
916 const char* error_msg = NULL;
917 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
918 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
919
920 if (m == NULL) {
921 assert(error_msg != NULL, "Always have an error message");
922 tty->print_cr("Got error: %s", error_msg);
923 return -1; // Pattern failed
924 }
925
926 // Pattern works - now check if it matches
927 int result;
928 if (m->match(mh, InlineMatcher::force_inline)) {
929 result = 2; // Force inline match
930 } else if (m->match(mh, InlineMatcher::dont_inline)) {
931 result = 1; // Dont inline match
932 } else {
933 result = 0; // No match
934 }
935 delete m;
936 return result;
937 WB_END
938
939 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
940 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
941 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
942
943 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
944
945 ResourceMark rm;
946 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
947
948 const char* error_msg = NULL;
949
950 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
951 if (m == NULL) {
952 assert(error_msg != NULL, "Must have error_msg");
953 tty->print_cr("Got error: %s", error_msg);
954 return -1;
955 }
956
957 // Pattern works - now check if it matches
958 int result = m->matches(mh);
959 delete m;
960 assert(result == 0 || result == 1, "Result out of range");
961 return result;
962 WB_END
963
964 static AlwaysFalseClosure always_false;
965
966 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
967 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
968 CHECK_JNI_EXCEPTION(env);
969 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
970 MutexLockerEx mu(Compile_lock);
971 MethodData* mdo = mh->method_data();
972 MethodCounters* mcs = mh->method_counters();
973
974 if (mdo != NULL) {
975 mdo->init();
976 ResourceMark rm;
977 int arg_count = mdo->method()->size_of_parameters();
978 for (int i = 0; i < arg_count; i++) {
979 mdo->set_arg_modified(i, 0);
980 }
981 MutexLockerEx mu(mdo->extra_data_lock());
982 mdo->clean_method_data(&always_false);
983 }
984
985 mh->clear_not_c1_compilable();
986 mh->clear_not_c2_compilable();
987 mh->clear_not_c2_osr_compilable();
988 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
989 if (mcs != NULL) {
990 mcs->backedge_counter()->init();
991 mcs->invocation_counter()->init();
992 mcs->set_interpreter_invocation_count(0);
993 mcs->set_interpreter_throwout_count(0);
994
995 #ifdef TIERED
996 mcs->set_rate(0.0F);
997 mh->set_prev_event_count(0);
998 mh->set_prev_time(0);
999 #endif
1000 }
1001 WB_END
1002
1003 template <typename T>
1004 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
1005 if (name == NULL) {
1006 return false;
1007 }
1008 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1009 const char* flag_name = env->GetStringUTFChars(name, NULL);
1010 CHECK_JNI_EXCEPTION_(env, false);
1011 Flag::Error result = (*TAt)(flag_name, value, true, true);
1012 env->ReleaseStringUTFChars(name, flag_name);
1013 return (result == Flag::SUCCESS);
1014 }
1015
1016 template <typename T>
1017 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
1018 if (name == NULL) {
1019 return false;
1020 }
1021 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1022 const char* flag_name = env->GetStringUTFChars(name, NULL);
1023 CHECK_JNI_EXCEPTION_(env, false);
1024 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
1025 env->ReleaseStringUTFChars(name, flag_name);
1026 return (result == Flag::SUCCESS);
1027 }
1028
1029 template <typename T>
1030 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1031 ResourceMark rm(thread);
1032 jclass clazz = env->FindClass(name->as_C_string());
1033 CHECK_JNI_EXCEPTION_(env, NULL);
1034 jmethodID methodID = env->GetStaticMethodID(clazz,
1035 vmSymbols::valueOf_name()->as_C_string(),
1036 sig->as_C_string());
1037 CHECK_JNI_EXCEPTION_(env, NULL);
1038 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1039 CHECK_JNI_EXCEPTION_(env, NULL);
1040 return result;
1041 }
1042
1043 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1044 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1045 }
1046 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1047 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1048 }
1049 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1050 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1051 }
1052 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1053 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1054 }*/
1055 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1056 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1057 }
1058
1059 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1060 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1061 const char* flag_name = env->GetStringUTFChars(name, NULL);
1062 CHECK_JNI_EXCEPTION_(env, NULL);
1063 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
1064 env->ReleaseStringUTFChars(name, flag_name);
1065 return result;
1066 }
1067
1068 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1069 Flag* flag = getVMFlag(thread, env, name);
1070 return (flag != NULL) && flag->is_constant_in_binary();
1071 WB_END
1072
1073 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1074 Flag* flag = getVMFlag(thread, env, name);
1075 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1076 WB_END
1077
1078 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1079 bool result;
1080 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
1081 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1082 return booleanBox(thread, env, result);
1083 }
1084 return NULL;
1085 WB_END
1086
1087 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1088 int result;
1089 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
1090 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1091 return longBox(thread, env, result);
1092 }
1093 return NULL;
1094 WB_END
1095
1096 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1097 uint result;
1098 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
1099 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1100 return longBox(thread, env, result);
1101 }
1102 return NULL;
1103 WB_END
1104
1105 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1106 intx result;
1107 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
1108 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1109 return longBox(thread, env, result);
1110 }
1111 return NULL;
1112 WB_END
1113
1114 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1115 uintx result;
1116 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
1117 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1118 return longBox(thread, env, result);
1119 }
1120 return NULL;
1121 WB_END
1122
1123 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1124 uint64_t result;
1125 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
1126 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1127 return longBox(thread, env, result);
1128 }
1129 return NULL;
1130 WB_END
1131
1132 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1133 uintx result;
1134 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
1135 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1136 return longBox(thread, env, result);
1137 }
1138 return NULL;
1139 WB_END
1140
1141 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1142 double result;
1143 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
1144 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1145 return doubleBox(thread, env, result);
1146 }
1147 return NULL;
1148 WB_END
1149
1150 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1151 ccstr ccstrResult;
1152 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
1153 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1154 jstring result = env->NewStringUTF(ccstrResult);
1155 CHECK_JNI_EXCEPTION_(env, NULL);
1156 return result;
1157 }
1158 return NULL;
1159 WB_END
1160
1161 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1162 bool result = value == JNI_TRUE ? true : false;
1163 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
1164 WB_END
1165
1166 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1167 int result = value;
1168 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
1169 WB_END
1170
1171 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1172 uint result = value;
1173 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
1174 WB_END
1175
1176 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1177 intx result = value;
1178 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
1179 WB_END
1180
1181 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1182 uintx result = value;
1183 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
1184 WB_END
1185
1186 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1187 uint64_t result = value;
1188 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
1189 WB_END
1190
1191 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1192 size_t result = value;
1193 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
1194 WB_END
1195
1196 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1197 double result = value;
1198 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
1199 WB_END
1200
1201 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1202 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1203 const char* ccstrValue;
1204 if (value == NULL) {
1205 ccstrValue = NULL;
1206 }
1207 else {
1208 ccstrValue = env->GetStringUTFChars(value, NULL);
1209 CHECK_JNI_EXCEPTION(env);
1210 }
1211 ccstr ccstrResult = ccstrValue;
1212 bool needFree;
1213 {
1214 ThreadInVMfromNative ttvfn(thread); // back to VM
1215 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
1216 }
1217 if (value != NULL) {
1218 env->ReleaseStringUTFChars(value, ccstrValue);
1219 }
1220 if (needFree) {
1221 FREE_C_HEAP_ARRAY(char, ccstrResult);
1222 }
1223 WB_END
1224
1225 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1226 WhiteBox::compilation_locked = true;
1227 WB_END
1228
1229 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1230 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1231 WhiteBox::compilation_locked = false;
1232 mo.notify_all();
1233 WB_END
1234
1235 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1236 // Force a code cache sweep and block until it finished
1237 NMethodSweeper::force_sweep();
1238 WB_END
1239
1240 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1241 ResourceMark rm(THREAD);
1242 int len;
1243 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1244 return (StringTable::lookup(name, len) != NULL);
1245 WB_END
1246
1247 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1248 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1249 Universe::heap()->collect(GCCause::_wb_full_gc);
1250 #if INCLUDE_ALL_GCS
1251 if (UseG1GC) {
1252 // Needs to be cleared explicitly for G1
1253 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1254 }
1255 #endif // INCLUDE_ALL_GCS
1256 WB_END
1257
1258 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1259 Universe::heap()->collect(GCCause::_wb_young_gc);
1260 WB_END
1261
1262 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1263 // static+volatile in order to force the read to happen
1264 // (not be eliminated by the compiler)
1265 static char c;
1266 static volatile char* p;
1267
1268 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1269 if (p == NULL) {
1270 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1271 }
1272
1273 c = *p;
1274 WB_END
1275
1276 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1277 const char* features = VM_Version::features_string();
1278 ThreadToNativeFromVM ttn(thread);
1279 jstring features_string = env->NewStringUTF(features);
1280
1281 CHECK_JNI_EXCEPTION_(env, NULL);
1282
1283 return features_string;
1284 WB_END
1285
1286 int WhiteBox::get_blob_type(const CodeBlob* code) {
1287 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1288 if (code->is_aot()) {
1289 return -1;
1290 }
1291 return CodeCache::get_code_heap(code)->code_blob_type();
1292 }
1293
1294 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1295 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1296 return CodeCache::get_code_heap(blob_type);
1297 }
1298
1299 struct CodeBlobStub {
1300 CodeBlobStub(const CodeBlob* blob) :
1301 name(os::strdup(blob->name())),
1302 size(blob->size()),
1303 blob_type(WhiteBox::get_blob_type(blob)),
1304 address((jlong) blob) { }
1305 ~CodeBlobStub() { os::free((void*) name); }
1306 const char* const name;
1307 const jint size;
1308 const jint blob_type;
1309 const jlong address;
1310 };
1311
1312 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1313 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1314 CHECK_JNI_EXCEPTION_(env, NULL);
1315 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1316
1317 jstring name = env->NewStringUTF(cb->name);
1318 CHECK_JNI_EXCEPTION_(env, NULL);
1319 env->SetObjectArrayElement(result, 0, name);
1320
1321 jobject obj = integerBox(thread, env, cb->size);
1322 CHECK_JNI_EXCEPTION_(env, NULL);
1323 env->SetObjectArrayElement(result, 1, obj);
1324
1325 obj = integerBox(thread, env, cb->blob_type);
1326 CHECK_JNI_EXCEPTION_(env, NULL);
1327 env->SetObjectArrayElement(result, 2, obj);
1328
1329 obj = longBox(thread, env, cb->address);
1330 CHECK_JNI_EXCEPTION_(env, NULL);
1331 env->SetObjectArrayElement(result, 3, obj);
1332
1333 return result;
1334 }
1335
1336 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1337 ResourceMark rm(THREAD);
1338 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1339 CHECK_JNI_EXCEPTION_(env, NULL);
1340 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1341 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1342 jobjectArray result = NULL;
1343 if (code == NULL) {
1344 return result;
1345 }
1346 int comp_level = code->comp_level();
1347 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1348
1349 ThreadToNativeFromVM ttn(thread);
1350 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1351 CHECK_JNI_EXCEPTION_(env, NULL);
1352 result = env->NewObjectArray(5, clazz, NULL);
1353 if (result == NULL) {
1354 return result;
1355 }
1356
1357 CodeBlobStub stub(code);
1358 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1359 CHECK_JNI_EXCEPTION_(env, NULL);
1360 env->SetObjectArrayElement(result, 0, codeBlob);
1361
1362 jobject level = integerBox(thread, env, comp_level);
1363 CHECK_JNI_EXCEPTION_(env, NULL);
1364 env->SetObjectArrayElement(result, 1, level);
1365
1366 jbyteArray insts = env->NewByteArray(insts_size);
1367 CHECK_JNI_EXCEPTION_(env, NULL);
1368 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1369 env->SetObjectArrayElement(result, 2, insts);
1370
1371 jobject id = integerBox(thread, env, code->compile_id());
1372 CHECK_JNI_EXCEPTION_(env, NULL);
1373 env->SetObjectArrayElement(result, 3, id);
1374
1375 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1376 CHECK_JNI_EXCEPTION_(env, NULL);
1377 env->SetObjectArrayElement(result, 4, entry_point);
1378
1379 return result;
1380 WB_END
1381
1382 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1383 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1384 BufferBlob* blob;
1385 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1386 if (full_size < size) {
1387 full_size += align_up(size - full_size, oopSize);
1388 }
1389 {
1390 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1391 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1392 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1393 }
1394 // Track memory usage statistic after releasing CodeCache_lock
1395 MemoryService::track_code_cache_memory_usage();
1396 return blob;
1397 }
1398
1399 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1400 if (size < 0) {
1401 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1402 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1403 }
1404 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1405 WB_END
1406
1407 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1408 if (addr == 0) {
1409 return;
1410 }
1411 BufferBlob::free((BufferBlob*) addr);
1412 WB_END
1413
1414 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1415 ResourceMark rm;
1416 GrowableArray<CodeBlobStub*> blobs;
1417 {
1418 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1419 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1420 if (heap == NULL) {
1421 return NULL;
1422 }
1423 for (CodeBlob* cb = (CodeBlob*) heap->first();
1424 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1425 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1426 new (stub) CodeBlobStub(cb);
1427 blobs.append(stub);
1428 }
1429 }
1430 if (blobs.length() == 0) {
1431 return NULL;
1432 }
1433 ThreadToNativeFromVM ttn(thread);
1434 jobjectArray result = NULL;
1435 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1436 CHECK_JNI_EXCEPTION_(env, NULL);
1437 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1438 CHECK_JNI_EXCEPTION_(env, NULL);
1439 if (result == NULL) {
1440 return result;
1441 }
1442 int i = 0;
1443 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1444 it != blobs.end(); ++it) {
1445 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1446 CHECK_JNI_EXCEPTION_(env, NULL);
1447 env->SetObjectArrayElement(result, i, obj);
1448 CHECK_JNI_EXCEPTION_(env, NULL);
1449 ++i;
1450 }
1451 return result;
1452 WB_END
1453
1454 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1455 return CompileBroker::get_compilation_activity_mode();
1456 WB_END
1457
1458 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1459 if (addr == 0) {
1460 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1461 "WB_GetCodeBlob: addr is null");
1462 }
1463 ThreadToNativeFromVM ttn(thread);
1464 CodeBlobStub stub((CodeBlob*) addr);
1465 return codeBlob2objectArray(thread, env, &stub);
1466 WB_END
1467
1468 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1469 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1470 CHECK_JNI_EXCEPTION_(env, 0);
1471 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1472 return (jlong) mh->method_data();
1473 WB_END
1474
1475 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1476 return (jlong) Thread::current()->stack_size();
1477 WB_END
1478
1479 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1480 JavaThread* t = JavaThread::current();
1481 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1482 WB_END
1483
1484
1485 int WhiteBox::array_bytes_to_length(size_t bytes) {
1486 return Array<u1>::bytes_to_length(bytes);
1487 }
1488
1489 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1490 if (size < 0) {
1491 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1492 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1493 }
1494
1495 oop class_loader_oop = JNIHandles::resolve(class_loader);
1496 ClassLoaderData* cld = class_loader_oop != NULL
1497 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1498 : ClassLoaderData::the_null_class_loader_data();
1499
1500 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1501
1502 return (jlong)(uintptr_t)metadata;
1503 WB_END
1504
1505 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1506 oop class_loader_oop = JNIHandles::resolve(class_loader);
1507 ClassLoaderData* cld = class_loader_oop != NULL
1508 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1509 : ClassLoaderData::the_null_class_loader_data();
1510
1511 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1512 WB_END
1513
1514 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1515 jstring version, jstring location, jobjectArray packages))
1516 ResourceMark rm(THREAD);
1517
1518 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1519 objArrayHandle packages_h(THREAD, packages_oop);
1520 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1521
1522 char** pkgs = NULL;
1523 if (num_packages > 0) {
1524 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1525 for (int x = 0; x < num_packages; x++) {
1526 oop pkg_str = packages_h->obj_at(x);
1527 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1528 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1529 err_msg("Bad package name"));
1530 }
1531 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1532 }
1533 }
1534 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1535 WB_END
1536
1537 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1538 ResourceMark rm(THREAD);
1539 char* package_name = NULL;
1540 if (package != NULL) {
1541 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1542 }
1543 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1544 WB_END
1545
1546 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1547 ResourceMark rm(THREAD);
1548 char* package_name = NULL;
1549 if (package != NULL) {
1550 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1551 }
1552 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1553 WB_END
1554
1555 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1556 ResourceMark rm(THREAD);
1557 char* package_name = NULL;
1558 if (package != NULL) {
1559 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1560 }
1561 Modules::add_module_exports(module, package_name, NULL, CHECK);
1562 WB_END
1563
1564 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1565 Modules::add_reads_module(from_module, source_module, CHECK);
1566 WB_END
1567
1568 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1569 if (inc < 0) {
1570 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1571 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1572 }
1573
1574 jlong max_size_t = (jlong) ((size_t) -1);
1575 if (inc > max_size_t) {
1576 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1577 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1578 }
1579
1580 size_t new_cap_until_GC = 0;
1581 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1582 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1583 if (!success) {
1584 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1585 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1586 "due to contention with another thread");
1587 }
1588 return (jlong) new_cap_until_GC;
1589 WB_END
1590
1591 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1592 return (jlong) MetaspaceGC::capacity_until_GC();
1593 WB_END
1594
1595 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1596 return MetaspaceGC::should_concurrent_collect();
1597 WB_END
1598
1599 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1600 return (jlong)Metaspace::reserve_alignment();
1601 WB_END
1602
1603 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1604 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1605 Monitor::_safepoint_check_always :
1606 Monitor::_safepoint_check_never;
1607 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1608 attemptedNoSafepointValue == JNI_TRUE);
1609 WB_END
1610
1611 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1612 oop obj_oop = JNIHandles::resolve(obj);
1613 return (jboolean) obj_oop->mark()->has_monitor();
1614 WB_END
1615
1616 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1617 VM_ForceSafepoint force_safepoint_op;
1618 VMThread::execute(&force_safepoint_op);
1619 WB_END
1620
1621 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1622 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1623 return (jlong) ik->constants();
1624 WB_END
1625
1626 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1627 return ConstantPool::CPCACHE_INDEX_TAG;
1628 WB_END
1629
1630 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1631 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1632 ConstantPool* cp = ik->constants();
1633 if (cp->cache() == NULL) {
1634 return -1;
1635 }
1636 return cp->cache()->length();
1637 WB_END
1638
1639 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1640 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1641 ConstantPool* cp = ik->constants();
1642 if (cp->cache() == NULL) {
1643 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1644 }
1645 jint cpci = index;
1646 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1647 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1648 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1649 }
1650 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1651 return cpi;
1652 WB_END
1653
1654 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1655 return ConstantPool::encode_invokedynamic_index(index);
1656 WB_END
1657
1658 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1659 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1660 VMThread::execute(&clear_ics);
1661 WB_END
1662
1663 template <typename T>
1664 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1665 assert(value != NULL, "sanity");
1666 if (method == NULL || name == NULL) {
1667 return false;
1668 }
1669 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1670 CHECK_JNI_EXCEPTION_(env, false);
1671 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1672 // can't be in VM when we call JNI
1673 ThreadToNativeFromVM ttnfv(thread);
1674 const char* flag_name = env->GetStringUTFChars(name, NULL);
1675 CHECK_JNI_EXCEPTION_(env, false);
1676 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1677 env->ReleaseStringUTFChars(name, flag_name);
1678 return result;
1679 }
1680
1681 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1682 bool result;
1683 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1684 // can't be in VM when we call JNI
1685 ThreadToNativeFromVM ttnfv(thread);
1686 return booleanBox(thread, env, result);
1687 }
1688 return NULL;
1689 WB_END
1690
1691 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1692 intx result;
1693 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1694 // can't be in VM when we call JNI
1695 ThreadToNativeFromVM ttnfv(thread);
1696 return longBox(thread, env, result);
1697 }
1698 return NULL;
1699 WB_END
1700
1701 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1702 uintx result;
1703 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1704 // can't be in VM when we call JNI
1705 ThreadToNativeFromVM ttnfv(thread);
1706 return longBox(thread, env, result);
1707 }
1708 return NULL;
1709 WB_END
1710
1711 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1712 double result;
1713 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1714 // can't be in VM when we call JNI
1715 ThreadToNativeFromVM ttnfv(thread);
1716 return doubleBox(thread, env, result);
1717 }
1718 return NULL;
1719 WB_END
1720
1721 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1722 ccstr ccstrResult;
1723 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1724 // can't be in VM when we call JNI
1725 ThreadToNativeFromVM ttnfv(thread);
1726 jstring result = env->NewStringUTF(ccstrResult);
1727 CHECK_JNI_EXCEPTION_(env, NULL);
1728 return result;
1729 }
1730 return NULL;
1731 WB_END
1732
1733 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1734 oop obj_oop = JNIHandles::resolve(obj);
1735 return oopDesc::is_archive_object(obj_oop);
1736 WB_END
1737
1738 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1739 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1740 WB_END
1741
1742 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1743 return !StringTable::shared_string_mapped();
1744 WB_END
1745
1746 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1747 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1748 if (k->is_instance_klass()) {
1749 InstanceKlass *ik = InstanceKlass::cast(k);
1750 ConstantPool *cp = ik->constants();
1751 objArrayOop refs = cp->resolved_references();
1752 return (jobject)JNIHandles::make_local(env, refs);
1753 } else {
1754 return NULL;
1755 }
1756 WB_END
1757
1758 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1759 return MetaspaceShared::open_archive_heap_region_mapped();
1760 WB_END
1761
1762 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1763 #if INCLUDE_CDS
1764 # ifdef _LP64
1765 if (!UseCompressedOops || !UseCompressedClassPointers) {
1766 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1767 return false;
1768 }
1769 # endif // _LP64
1770 return true;
1771 #else
1772 return false;
1773 #endif // INCLUDE_CDS
1774 WB_END
1775
1776 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1777 return MetaspaceShared::is_heap_object_archiving_allowed();
1778 WB_END
1779
1780
1781 #if INCLUDE_CDS
1782
1783 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1784 ResourceMark rm;
1785 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1786 int result = CDSOffsets::find_offset(c_name);
1787 return (jint)result;
1788 WB_END
1789
1790 #endif // INCLUDE_CDS
1791
1792 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1793 class TraceSelfClosure : public ThreadClosure {
1794 jint _num_threads_completed;
1795
1796 void do_thread(Thread* th) {
1797 assert(th->is_Java_thread(), "sanity");
1798 JavaThread* jt = (JavaThread*)th;
1799 ResourceMark rm;
1800
1801 jt->print_on(tty);
1802 jt->print_stack_on(tty);
1803 tty->cr();
1804 Atomic::inc(&_num_threads_completed);
1805 }
1806
1807 public:
1808 TraceSelfClosure() : _num_threads_completed(0) {}
1809
1810 jint num_threads_completed() const { return _num_threads_completed; }
1811 };
1812 TraceSelfClosure tsc;
1813
1814 if (all_threads) {
1815 Handshake::execute(&tsc);
1816 } else {
1817 oop thread_oop = JNIHandles::resolve(thread_handle);
1818 if (thread_oop != NULL) {
1819 JavaThread* target = java_lang_Thread::thread(thread_oop);
1820 Handshake::execute(&tsc, target);
1821 }
1822 }
1823 return tsc.num_threads_completed();
1824 WB_END
1825
1826 //Some convenience methods to deal with objects from java
1827 int WhiteBox::offset_for_field(const char* field_name, oop object,
1828 Symbol* signature_symbol) {
1829 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1830 Thread* THREAD = Thread::current();
1831
1832 //Get the class of our object
1833 Klass* arg_klass = object->klass();
1834 //Turn it into an instance-klass
1835 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1836
1837 //Create symbols to look for in the class
1838 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1839 THREAD);
1840
1841 //To be filled in with an offset of the field we're looking for
1842 fieldDescriptor fd;
1843
1844 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1845 if (res == NULL) {
1846 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1847 name_symbol->as_C_string());
1848 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1849 }
1850
1851 //fetch the field at the offset we've found
1852 int dest_offset = fd.offset();
1853
1854 return dest_offset;
1855 }
1856
1857
1858 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1859 int offset = offset_for_field(field_name, object,
1860 vmSymbols::string_signature());
1861 oop string = object->obj_field(offset);
1862 if (string == NULL) {
1863 return NULL;
1864 }
1865 const char* ret = java_lang_String::as_utf8_string(string);
1866 return ret;
1867 }
1868
1869 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1870 int offset =
1871 offset_for_field(field_name, object, vmSymbols::bool_signature());
1872 bool ret = (object->bool_field(offset) == JNI_TRUE);
1873 return ret;
1874 }
1875
1876 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1877 ResourceMark rm;
1878 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1879
1880 // one by one registration natives for exception catching
1881 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1882 CHECK_JNI_EXCEPTION(env);
1883 for (int i = 0, n = method_count; i < n; ++i) {
1884 // Skip dummy entries
1885 if (method_array[i].fnPtr == NULL) continue;
1886 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1887 jthrowable throwable_obj = env->ExceptionOccurred();
1888 if (throwable_obj != NULL) {
1889 env->ExceptionClear();
1890 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1891 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1892 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1893 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1894 method_array[i].name, method_array[i].signature);
1895 }
1896 } else {
1897 // Registration failed unexpectedly.
1898 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1899 method_array[i].name, method_array[i].signature);
1900 env->UnregisterNatives(wbclass);
1901 break;
1902 }
1903 }
1904 }
1905 }
1906
1907 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1908 // can't be in VM when we call JNI
1909 ThreadToNativeFromVM ttnfv(thread);
1910 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1911 CHECK_JNI_EXCEPTION_(env, 0);
1912 int ret;
1913 {
1914 ThreadInVMfromNative ttvfn(thread); // back to VM
1915 ret = DirectivesParser::parse_string(dir, tty);
1916 }
1917 env->ReleaseStringUTFChars(compDirect, dir);
1918 // -1 for error parsing directive. Return 0 as number of directives added.
1919 if (ret == -1) {
1920 ret = 0;
1921 }
1922 return (jint) ret;
1923 WB_END
1924
1925 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1926 DirectivesStack::pop(count);
1927 WB_END
1928
1929 // Checks that the library libfile has the noexecstack bit set.
1930 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1931 jboolean ret = false;
1932 #ifdef LINUX
1933 // Can't be in VM when we call JNI.
1934 ThreadToNativeFromVM ttnfv(thread);
1935 const char* lf = env->GetStringUTFChars(libfile, NULL);
1936 CHECK_JNI_EXCEPTION_(env, 0);
1937 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1938 env->ReleaseStringUTFChars(libfile, lf);
1939 #endif
1940 return ret;
1941 WB_END
1942
1943 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1944 LINUX_ONLY(return OSContainer::is_containerized();)
1945 return false;
1946 WB_END
1947
1948 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1949 os::print_os_info(tty);
1950 WB_END
1951
1952 // Elf decoder
1953 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1954 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1955 ElfFile::_do_not_cache_elf_section = true;
1956 #endif
1957 WB_END
1958
1959
1960 #define CC (char*)
1961
1962 static JNINativeMethod methods[] = {
1963 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1964 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1965 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1966 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1967 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1968 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1969 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1970 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1971 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
1972 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1973 {CC"parseCommandLine0",
1974 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1975 (void*) &WB_ParseCommandLine
1976 },
1977 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1978 (void*)&WB_AddToBootstrapClassLoaderSearch},
1979 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1980 (void*)&WB_AddToSystemClassLoaderSearch},
1981 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1982 (void*)&WB_GetCompressedOopsMaxHeapSize},
1983 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1984 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1985 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1986 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1987 #if INCLUDE_CDS
1988 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
1989 #endif
1990 #if INCLUDE_ALL_GCS
1991 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1992 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1993 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1994 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1995 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1996 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1997 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1998 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1999 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2000 (void*)&WB_G1AuxiliaryMemoryUsage },
2001 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2002 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2003 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2004 #endif // INCLUDE_ALL_GCS
2005 #if INCLUDE_NMT
2006 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2007 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2008 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2009 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2010 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2011 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2012 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2013 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2014 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2015 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2016 #endif // INCLUDE_NMT
2017 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2018 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2019 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2020 (void*)&WB_DeoptimizeMethod },
2021 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2022 (void*)&WB_IsMethodCompiled },
2023 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2024 (void*)&WB_IsMethodCompilable},
2025 {CC"isMethodQueuedForCompilation0",
2026 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2027 {CC"isIntrinsicAvailable0",
2028 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2029 (void*)&WB_IsIntrinsicAvailable},
2030 {CC"makeMethodNotCompilable0",
2031 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2032 {CC"testSetDontInlineMethod0",
2033 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2034 {CC"getMethodCompilationLevel0",
2035 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2036 {CC"getMethodEntryBci0",
2037 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2038 {CC"getCompileQueueSize",
2039 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2040 {CC"testSetForceInlineMethod0",
2041 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2042 {CC"enqueueMethodForCompilation0",
2043 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2044 {CC"enqueueInitializerForCompilation0",
2045 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2046 {CC"clearMethodState0",
2047 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2048 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2049 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2050 {CC"matchesMethod",
2051 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2052 (void*)&WB_MatchesMethod},
2053 {CC"matchesInline",
2054 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2055 (void*)&WB_MatchesInline},
2056 {CC"shouldPrintAssembly",
2057 CC"(Ljava/lang/reflect/Executable;I)Z",
2058 (void*)&WB_ShouldPrintAssembly},
2059
2060 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2061 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2062 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2063 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2064 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2065 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2066 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2067 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2068 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2069 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2070 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2071 (void*)&WB_SetStringVMFlag},
2072 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2073 (void*)&WB_GetBooleanVMFlag},
2074 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2075 (void*)&WB_GetIntVMFlag},
2076 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2077 (void*)&WB_GetUintVMFlag},
2078 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2079 (void*)&WB_GetIntxVMFlag},
2080 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2081 (void*)&WB_GetUintxVMFlag},
2082 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2083 (void*)&WB_GetUint64VMFlag},
2084 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2085 (void*)&WB_GetSizeTVMFlag},
2086 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2087 (void*)&WB_GetDoubleVMFlag},
2088 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2089 (void*)&WB_GetStringVMFlag},
2090 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2091 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2092 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2093 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2094 {CC"allocateMetaspace",
2095 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2096 {CC"freeMetaspace",
2097 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2098 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2099 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2100 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2101 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2102 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2103 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2104 (void*)&WB_GetNMethod },
2105 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2106 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2107 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2108 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2109 {CC"getCompilationActivityMode",
2110 CC"()I", (void*)&WB_GetCompilationActivityMode},
2111 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2112 (void*)&WB_GetMethodData },
2113 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2114 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2115 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2116 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2117 (void*)&WB_DefineModule },
2118 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2119 (void*)&WB_AddModuleExports },
2120 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2121 (void*)&WB_AddReadsModule },
2122 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2123 (void*)&WB_AddModuleExportsToAllUnnamed },
2124 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2125 (void*)&WB_AddModuleExportsToAll },
2126 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2127 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2128 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2129 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2130 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2131 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2132 {CC"remapInstructionOperandFromCPCache0",
2133 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2134 {CC"encodeConstantPoolIndyIndex0",
2135 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2136 {CC"getMethodBooleanOption",
2137 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2138 (void*)&WB_GetMethodBooleaneOption},
2139 {CC"getMethodIntxOption",
2140 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2141 (void*)&WB_GetMethodIntxOption},
2142 {CC"getMethodUintxOption",
2143 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2144 (void*)&WB_GetMethodUintxOption},
2145 {CC"getMethodDoubleOption",
2146 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2147 (void*)&WB_GetMethodDoubleOption},
2148 {CC"getMethodStringOption",
2149 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2150 (void*)&WB_GetMethodStringOption},
2151 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2152 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2153 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2154 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2155 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2156 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2157 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2158
2159 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2160 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2161 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2162 (void*)&WB_AddCompilerDirective },
2163 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2164 {CC"currentGC", CC"()I", (void*)&WB_CurrentGC},
2165 {CC"allSupportedGC", CC"()I", (void*)&WB_AllSupportedGC},
2166 {CC"gcSelectedByErgo", CC"()Z", (void*)&WB_GCSelectedByErgo},
2167 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2168 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2169 (void*)&WB_GetConcurrentGCPhases},
2170 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2171 (void*)&WB_RequestConcurrentGCPhase},
2172 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2173 (void*)&WB_CheckLibSpecifiesNoexecstack},
2174 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2175 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2176 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2177 };
2178
2179
2180 #undef CC
2181
2182 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2183 {
2184 if (WhiteBoxAPI) {
2185 // Make sure that wbclass is loaded by the null classloader
2186 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2187 Handle loader(THREAD, ik->class_loader());
2188 if (loader.is_null()) {
2189 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2190 WhiteBox::set_used();
2191 }
2192 }
2193 }
2194 JVM_END