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