1 /*
2 * Copyright (c) 2012, 2014, 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 "code/codeCache.hpp"
28 #include "memory/metadataFactory.hpp"
29 #include "memory/universe.hpp"
30 #include "oops/oop.inline.hpp"
31
32 #include "classfile/stringTable.hpp"
33 #include "classfile/classLoaderData.hpp"
34
35 #include "prims/whitebox.hpp"
36 #include "prims/wbtestmethods/parserTests.hpp"
37
38 #include "runtime/thread.hpp"
39 #include "runtime/arguments.hpp"
40 #include "runtime/interfaceSupport.hpp"
41 #include "runtime/os.hpp"
42 #include "runtime/vm_version.hpp"
43
44 #include "utilities/array.hpp"
45 #include "utilities/debug.hpp"
46 #include "utilities/macros.hpp"
47 #include "utilities/exceptions.hpp"
48
49 #if INCLUDE_ALL_GCS
50 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp"
51 #include "gc_implementation/g1/concurrentMark.hpp"
52 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
53 #include "gc_implementation/g1/heapRegionRemSet.hpp"
54 #endif // INCLUDE_ALL_GCS
55
56 #if INCLUDE_NMT
57 #include "services/mallocSiteTable.hpp"
58 #include "services/memTracker.hpp"
59 #include "utilities/nativeCallStack.hpp"
60 #endif // INCLUDE_NMT
61
62 #include "compiler/compileBroker.hpp"
63 #include "runtime/compilationPolicy.hpp"
64
65 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
66
67 #define SIZE_T_MAX_VALUE ((size_t) -1)
68
69 bool WhiteBox::_used = false;
70
71 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
72 return (jlong)(void*)JNIHandles::resolve(obj);
73 WB_END
74
75 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
76 return heapOopSize;
77 WB_END
78
79
80 class WBIsKlassAliveClosure : public KlassClosure {
81 Symbol* _name;
82 bool _found;
83 public:
84 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
85
86 void do_klass(Klass* k) {
87 if (_found) return;
88 Symbol* ksym = k->name();
89 if (ksym->fast_compare(_name) == 0) {
90 _found = true;
91 }
92 }
93
94 bool found() const {
95 return _found;
96 }
97 };
98
99 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
100 Handle h_name = JNIHandles::resolve(name);
101 if (h_name.is_null()) return false;
102 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
103 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
104
105 WBIsKlassAliveClosure closure(sym);
106 ClassLoaderDataGraph::classes_do(&closure);
107
108 return closure.found();
109 WB_END
110
111 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
112 return (jlong)Arguments::max_heap_for_compressed_oops();
113 }
114 WB_END
115
116 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
117 CollectorPolicy * p = Universe::heap()->collector_policy();
118 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
119 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Space alignment "SIZE_FORMAT" Heap alignment "SIZE_FORMAT,
120 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
121 p->space_alignment(), p->heap_alignment());
122 }
123 WB_END
124
125 #ifndef PRODUCT
126 // Forward declaration
127 void TestReservedSpace_test();
128 void TestReserveMemorySpecial_test();
129 void TestVirtualSpace_test();
130 void TestMetaspaceAux_test();
131 #endif
132
133 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
134 #ifndef PRODUCT
135 TestReservedSpace_test();
136 TestReserveMemorySpecial_test();
137 TestVirtualSpace_test();
138 TestMetaspaceAux_test();
139 #endif
140 WB_END
141
142 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
143 size_t granularity = os::vm_allocation_granularity();
144 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
145 VirtualSpace vs;
146 vs.initialize(rhs, 50 * granularity);
147
148 //Check if constraints are complied
149 if (!( UseCompressedOops && rhs.base() != NULL &&
150 Universe::narrow_oop_base() != NULL &&
151 Universe::narrow_oop_use_implicit_null_checks() )) {
152 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
153 "\tUseCompressedOops is %d\n"
154 "\trhs.base() is "PTR_FORMAT"\n"
155 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
156 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
157 UseCompressedOops,
158 rhs.base(),
159 Universe::narrow_oop_base(),
160 Universe::narrow_oop_use_implicit_null_checks());
161 return;
162 }
163 tty->print_cr("Reading from no access area... ");
164 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
165 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
166 WB_END
167
168 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
169 size_t magnitude, size_t iterations) {
170 size_t granularity = os::vm_allocation_granularity();
171 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
172 VirtualSpace vs;
173 if (!vs.initialize(rhs, 0)) {
174 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
175 return 3;
176 }
177
178 long seed = os::random();
179 tty->print_cr("Random seed is %ld", seed);
180 os::init_random(seed);
181
182 for (size_t i = 0; i < iterations; i++) {
183
184 // Whether we will shrink or grow
185 bool shrink = os::random() % 2L == 0;
186
187 // Get random delta to resize virtual space
188 size_t delta = (size_t)os::random() % magnitude;
189
190 // If we are about to shrink virtual space below zero, then expand instead
191 if (shrink && vs.committed_size() < delta) {
192 shrink = false;
193 }
194
195 // Resizing by delta
196 if (shrink) {
197 vs.shrink_by(delta);
198 } else {
199 // If expanding fails expand_by will silently return false
200 vs.expand_by(delta, true);
201 }
202 }
203 return 0;
204 }
205
206 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
207 jlong reserved_space_size, jlong magnitude, jlong iterations))
208 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
209 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
210 iterations);
211 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
212 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
213 return 1;
214 }
215
216 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
217 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
218 if (sizeof(size_t) < sizeof(jlong)) {
219 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
220 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
221 || iterations > size_t_max_value) {
222 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
223 return 2;
224 }
225 }
226
227 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
228 (size_t) magnitude, (size_t) iterations);
229 WB_END
230
231 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
232 oop p = JNIHandles::resolve(obj);
233 #if INCLUDE_ALL_GCS
234 if (UseG1GC) {
235 G1CollectedHeap* g1 = G1CollectedHeap::heap();
236 const HeapRegion* hr = g1->heap_region_containing(p);
237 if (hr == NULL) {
238 return false;
239 }
240 return !(hr->is_young());
241 } else if (UseParallelGC) {
242 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
243 return !psh->is_in_young(p);
244 }
245 #endif // INCLUDE_ALL_GCS
246 GenCollectedHeap* gch = GenCollectedHeap::heap();
247 return !gch->is_in_young(p);
248 WB_END
249
250 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
251 oop p = JNIHandles::resolve(obj);
252 return p->size() * HeapWordSize;
253 WB_END
254
255 #if INCLUDE_ALL_GCS
256 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
257 G1CollectedHeap* g1 = G1CollectedHeap::heap();
258 oop result = JNIHandles::resolve(obj);
259 const HeapRegion* hr = g1->heap_region_containing(result);
260 return hr->is_humongous();
261 WB_END
262
263 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
264 G1CollectedHeap* g1 = G1CollectedHeap::heap();
265 size_t nr = g1->num_free_regions();
266 return (jlong)nr;
267 WB_END
268
269 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
270 G1CollectedHeap* g1 = G1CollectedHeap::heap();
271 ConcurrentMark* cm = g1->concurrent_mark();
272 return cm->concurrent_marking_in_progress();
273 WB_END
274
275 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
276 return (jint)HeapRegion::GrainBytes;
277 WB_END
278 #endif // INCLUDE_ALL_GCS
279
280 #if INCLUDE_NMT
281 // Alloc memory using the test memory type so that we can use that to see if
282 // NMT picks it up correctly
283 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
284 jlong addr = 0;
285 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
286 return addr;
287 WB_END
288
289 // Alloc memory with pseudo call stack. The test can create psudo malloc
290 // allocation site to stress the malloc tracking.
291 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
292 address pc = (address)(size_t)pseudo_stack;
293 NativeCallStack stack(&pc, 1);
294 return (jlong)os::malloc(size, mtTest, stack);
295 WB_END
296
297 // Free the memory allocated by NMTAllocTest
298 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
299 os::free((void*)(uintptr_t)mem, mtTest);
300 WB_END
301
302 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
303 jlong addr = 0;
304
305 addr = (jlong)(uintptr_t)os::reserve_memory(size);
306 MemTracker::record_virtual_memory_type((address)addr, mtTest);
307
308 return addr;
309 WB_END
310
311
312 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
313 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
314 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
315 WB_END
316
317 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
318 os::uncommit_memory((char *)(uintptr_t)addr, size);
319 WB_END
320
321 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
322 os::release_memory((char *)(uintptr_t)addr, size);
323 WB_END
324
325 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
326 return MemTracker::tracking_level() == NMT_detail;
327 WB_END
328
329 WB_ENTRY(void, WB_NMTOverflowHashBucket(JNIEnv* env, jobject o, jlong num))
330 address pc = (address)1;
331 for (jlong index = 0; index < num; index ++) {
332 NativeCallStack stack(&pc, 1);
333 os::malloc(0, mtTest, stack);
334 pc += MallocSiteTable::hash_buckets();
335 }
336 WB_END
337
338 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
339 // Test that we can downgrade NMT levels but not upgrade them.
340 if (MemTracker::tracking_level() == NMT_off) {
341 MemTracker::transition_to(NMT_off);
342 return MemTracker::tracking_level() == NMT_off;
343 } else {
344 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
345 MemTracker::transition_to(NMT_summary);
346 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
347
348 // Can't go to detail once NMT is set to summary.
349 MemTracker::transition_to(NMT_detail);
350 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
351
352 // Shutdown sets tracking level to minimal.
353 MemTracker::shutdown();
354 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
355
356 // Once the tracking level is minimal, we cannot increase to summary.
357 // The code ignores this request instead of asserting because if the malloc site
358 // table overflows in another thread, it tries to change the code to summary.
359 MemTracker::transition_to(NMT_summary);
360 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
361
362 // Really can never go up to detail, verify that the code would never do this.
363 MemTracker::transition_to(NMT_detail);
364 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
365 return MemTracker::tracking_level() == NMT_minimal;
366 }
367 WB_END
368 #endif // INCLUDE_NMT
369
370 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
371 assert(method != NULL, "method should not be null");
372 ThreadToNativeFromVM ttn(thread);
373 return env->FromReflectedMethod(method);
374 }
375
376 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
377 MutexLockerEx mu(Compile_lock);
378 CodeCache::mark_all_nmethods_for_deoptimization();
379 VM_Deoptimize op;
380 VMThread::execute(&op);
381 WB_END
382
383 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
384 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
385 int result = 0;
386 CHECK_JNI_EXCEPTION_(env, result);
387 MutexLockerEx mu(Compile_lock);
388 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
389 nmethod* code;
390 if (is_osr) {
391 int bci = InvocationEntryBci;
392 while ((code = mh->lookup_osr_nmethod_for(bci, CompLevel_none, false)) != NULL) {
393 code->mark_for_deoptimization();
394 ++result;
395 bci = code->osr_entry_bci() + 1;
396 }
397 } else {
398 code = mh->code();
399 }
400 if (code != NULL) {
401 code->mark_for_deoptimization();
402 ++result;
403 }
404 result += CodeCache::mark_for_deoptimization(mh());
405 if (result > 0) {
406 VM_Deoptimize op;
407 VMThread::execute(&op);
408 }
409 return result;
410 WB_END
411
412 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
413 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
414 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
415 MutexLockerEx mu(Compile_lock);
416 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
417 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
418 if (code == NULL) {
419 return JNI_FALSE;
420 }
421 return (code->is_alive() && !code->is_marked_for_deoptimization());
422 WB_END
423
424 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
425 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
426 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
427 MutexLockerEx mu(Compile_lock);
428 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
429 if (is_osr) {
430 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
431 } else {
432 return CompilationPolicy::can_be_compiled(mh, comp_level);
433 }
434 WB_END
435
436 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
437 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
438 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
439 MutexLockerEx mu(Compile_lock);
440 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
441 return mh->queued_for_compilation();
442 WB_END
443
444 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
445 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
446 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
447 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
448 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
449 return (code != NULL ? code->comp_level() : CompLevel_none);
450 WB_END
451
452 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
453 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
454 CHECK_JNI_EXCEPTION(env);
455 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
456 if (is_osr) {
457 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
458 } else {
459 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
460 }
461 WB_END
462
463 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
464 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
465 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
466 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
467 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
468 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
469 WB_END
470
471 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
472 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
473 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
474 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
475 bool result = mh->dont_inline();
476 mh->set_dont_inline(value == JNI_TRUE);
477 return result;
478 WB_END
479
480 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
481 if (comp_level == CompLevel_any) {
482 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
483 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
484 } else {
485 return CompileBroker::queue_size(comp_level);
486 }
487 WB_END
488
489 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
490 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
491 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
492 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
493 bool result = mh->force_inline();
494 mh->set_force_inline(value == JNI_TRUE);
495 return result;
496 WB_END
497
498 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
499 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
500 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
501 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
502 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
503 MutexLockerEx mu(Compile_lock);
504 return (mh->queued_for_compilation() || nm != NULL);
505 WB_END
506
507 class VM_WhiteBoxOperation : public VM_Operation {
508 public:
509 VM_WhiteBoxOperation() { }
510 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
511 bool allow_nested_vm_operations() const { return true; }
512 };
513
514 class AlwaysFalseClosure : public BoolObjectClosure {
515 public:
516 bool do_object_b(oop p) { return false; }
517 };
518
519 static AlwaysFalseClosure always_false;
520
521 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
522 public:
523 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
524 void doit() {
525 _mdo->clean_method_data(&always_false);
526 }
527 private:
528 MethodData* _mdo;
529 };
530
531 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
532 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
533 CHECK_JNI_EXCEPTION(env);
534 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
535 MutexLockerEx mu(Compile_lock);
536 MethodData* mdo = mh->method_data();
537 MethodCounters* mcs = mh->method_counters();
538
539 if (mdo != NULL) {
540 mdo->init();
541 ResourceMark rm;
542 int arg_count = mdo->method()->size_of_parameters();
543 for (int i = 0; i < arg_count; i++) {
544 mdo->set_arg_modified(i, 0);
545 }
546 VM_WhiteBoxCleanMethodData op(mdo);
547 VMThread::execute(&op);
548 }
549
550 mh->clear_not_c1_compilable();
551 mh->clear_not_c2_compilable();
552 mh->clear_not_c2_osr_compilable();
553 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
554 if (mcs != NULL) {
555 mcs->backedge_counter()->init();
556 mcs->invocation_counter()->init();
557 mcs->set_interpreter_invocation_count(0);
558 mcs->set_interpreter_throwout_count(0);
559
560 #ifdef TIERED
561 mcs->set_rate(0.0F);
562 mh->set_prev_event_count(0);
563 mh->set_prev_time(0);
564 #endif
565 }
566 WB_END
567
568 template <typename T>
569 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
570 if (name == NULL) {
571 return false;
572 }
573 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
574 const char* flag_name = env->GetStringUTFChars(name, NULL);
575 bool result = (*TAt)(flag_name, value);
576 env->ReleaseStringUTFChars(name, flag_name);
577 return result;
578 }
579
580 template <typename T>
581 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
582 if (name == NULL) {
583 return false;
584 }
585 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
586 const char* flag_name = env->GetStringUTFChars(name, NULL);
587 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
588 env->ReleaseStringUTFChars(name, flag_name);
589 return result;
590 }
591
592 template <typename T>
593 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
594 ResourceMark rm(thread);
595 jclass clazz = env->FindClass(name->as_C_string());
596 CHECK_JNI_EXCEPTION_(env, NULL);
597 jmethodID methodID = env->GetStaticMethodID(clazz,
598 vmSymbols::valueOf_name()->as_C_string(),
599 sig->as_C_string());
600 CHECK_JNI_EXCEPTION_(env, NULL);
601 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
602 CHECK_JNI_EXCEPTION_(env, NULL);
603 return result;
604 }
605
606 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
607 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
608 }
609 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
610 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
611 }
612 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
613 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
614 }
615 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
616 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
617 }*/
618 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
619 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
620 }
621
622 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
623 bool result;
624 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
625 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
626 return booleanBox(thread, env, result);
627 }
628 return NULL;
629 WB_END
630
631 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
632 intx result;
633 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
634 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
635 return longBox(thread, env, result);
636 }
637 return NULL;
638 WB_END
639
640 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
641 uintx result;
642 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
643 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
644 return longBox(thread, env, result);
645 }
646 return NULL;
647 WB_END
648
649 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
650 uint64_t result;
651 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
652 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
653 return longBox(thread, env, result);
654 }
655 return NULL;
656 WB_END
657
658 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
659 uintx result;
660 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
661 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
662 return longBox(thread, env, result);
663 }
664 return NULL;
665 WB_END
666
667 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
668 double result;
669 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
670 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
671 return doubleBox(thread, env, result);
672 }
673 return NULL;
674 WB_END
675
676 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
677 ccstr ccstrResult;
678 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
679 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
680 jstring result = env->NewStringUTF(ccstrResult);
681 CHECK_JNI_EXCEPTION_(env, NULL);
682 return result;
683 }
684 return NULL;
685 WB_END
686
687 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
688 bool result = value == JNI_TRUE ? true : false;
689 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
690 WB_END
691
692 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
693 intx result = value;
694 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
695 WB_END
696
697 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
698 uintx result = value;
699 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
700 WB_END
701
702 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
703 uint64_t result = value;
704 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
705 WB_END
706
707 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
708 size_t result = value;
709 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
710 WB_END
711
712 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
713 double result = value;
714 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
715 WB_END
716
717 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
718 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
719 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
720 ccstr ccstrResult = ccstrValue;
721 bool needFree;
722 {
723 ThreadInVMfromNative ttvfn(thread); // back to VM
724 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
725 }
726 if (value != NULL) {
727 env->ReleaseStringUTFChars(value, ccstrValue);
728 }
729 if (needFree) {
730 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
731 }
732 WB_END
733
734
735 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
736 ResourceMark rm(THREAD);
737 int len;
738 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
739 return (StringTable::lookup(name, len) != NULL);
740 WB_END
741
742 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
743 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
744 Universe::heap()->collect(GCCause::_last_ditch_collection);
745 #if INCLUDE_ALL_GCS
746 if (UseG1GC) {
747 // Needs to be cleared explicitly for G1
748 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
749 }
750 #endif // INCLUDE_ALL_GCS
751 WB_END
752
753 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
754 Universe::heap()->collect(GCCause::_wb_young_gc);
755 WB_END
756
757 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
758 // static+volatile in order to force the read to happen
759 // (not be eliminated by the compiler)
760 static char c;
761 static volatile char* p;
762
763 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
764 if (p == NULL) {
765 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
766 }
767
768 c = *p;
769 WB_END
770
771 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
772 const char* cpu_features = VM_Version::cpu_features();
773 ThreadToNativeFromVM ttn(thread);
774 jstring features_string = env->NewStringUTF(cpu_features);
775
776 CHECK_JNI_EXCEPTION_(env, NULL);
777
778 return features_string;
779 WB_END
780
781
782 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
783 ResourceMark rm(THREAD);
784 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
785 CHECK_JNI_EXCEPTION_(env, NULL);
786 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
787 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
788 jobjectArray result = NULL;
789 if (code == NULL) {
790 return result;
791 }
792 int insts_size = code->insts_size();
793
794 ThreadToNativeFromVM ttn(thread);
795 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
796 CHECK_JNI_EXCEPTION_(env, NULL);
797 result = env->NewObjectArray(2, clazz, NULL);
798 if (result == NULL) {
799 return result;
800 }
801
802 jobject obj = integerBox(thread, env, code->comp_level());
803 CHECK_JNI_EXCEPTION_(env, NULL);
804 env->SetObjectArrayElement(result, 0, obj);
805
806 jbyteArray insts = env->NewByteArray(insts_size);
807 CHECK_JNI_EXCEPTION_(env, NULL);
808 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
809 env->SetObjectArrayElement(result, 1, insts);
810
811 return result;
812 WB_END
813
814 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
815 return (jlong) Thread::current()->stack_size();
816 WB_END
817
818 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
819 JavaThread* t = JavaThread::current();
820 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong) StackShadowPages * os::vm_page_size();
821 WB_END
822
823 int WhiteBox::array_bytes_to_length(size_t bytes) {
824 return Array<u1>::bytes_to_length(bytes);
825 }
826
827 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
828 if (size < 0) {
829 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
830 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
831 }
832
833 oop class_loader_oop = JNIHandles::resolve(class_loader);
834 ClassLoaderData* cld = class_loader_oop != NULL
835 ? java_lang_ClassLoader::loader_data(class_loader_oop)
836 : ClassLoaderData::the_null_class_loader_data();
837
838 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
839
840 return (jlong)(uintptr_t)metadata;
841 WB_END
842
843 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
844 oop class_loader_oop = JNIHandles::resolve(class_loader);
845 ClassLoaderData* cld = class_loader_oop != NULL
846 ? java_lang_ClassLoader::loader_data(class_loader_oop)
847 : ClassLoaderData::the_null_class_loader_data();
848
849 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
850 WB_END
851
852 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
853 if (inc < 0) {
854 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
855 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
856 }
857
858 jlong max_size_t = (jlong) ((size_t) -1);
859 if (inc > max_size_t) {
860 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
861 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
862 }
863
864 size_t new_cap_until_GC = 0;
865 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
866 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
867 if (!success) {
868 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
869 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
870 "due to contention with another thread");
871 }
872 return (jlong) new_cap_until_GC;
873 WB_END
874
875 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
876 return (jlong) MetaspaceGC::capacity_until_GC();
877 WB_END
878
879 //Some convenience methods to deal with objects from java
880 int WhiteBox::offset_for_field(const char* field_name, oop object,
881 Symbol* signature_symbol) {
882 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
883 Thread* THREAD = Thread::current();
884
885 //Get the class of our object
886 Klass* arg_klass = object->klass();
887 //Turn it into an instance-klass
888 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
889
890 //Create symbols to look for in the class
891 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
892 THREAD);
893
894 //To be filled in with an offset of the field we're looking for
895 fieldDescriptor fd;
896
897 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
898 if (res == NULL) {
899 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
900 name_symbol->as_C_string());
901 fatal("Invalid layout of preloaded class");
902 }
903
904 //fetch the field at the offset we've found
905 int dest_offset = fd.offset();
906
907 return dest_offset;
908 }
909
910
911 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
912 int offset = offset_for_field(field_name, object,
913 vmSymbols::string_signature());
914 oop string = object->obj_field(offset);
915 if (string == NULL) {
916 return NULL;
917 }
918 const char* ret = java_lang_String::as_utf8_string(string);
919 return ret;
920 }
921
922 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
923 int offset =
924 offset_for_field(field_name, object, vmSymbols::bool_signature());
925 bool ret = (object->bool_field(offset) == JNI_TRUE);
926 return ret;
927 }
928
929 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
930 ResourceMark rm;
931 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
932
933 // one by one registration natives for exception catching
934 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
935 CHECK_JNI_EXCEPTION(env);
936 for (int i = 0, n = method_count; i < n; ++i) {
937 // Skip dummy entries
938 if (method_array[i].fnPtr == NULL) continue;
939 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
940 jthrowable throwable_obj = env->ExceptionOccurred();
941 if (throwable_obj != NULL) {
942 env->ExceptionClear();
943 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
944 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
945 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
946 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
947 method_array[i].name, method_array[i].signature);
948 }
949 } else {
950 // Registration failed unexpectedly.
951 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
952 method_array[i].name, method_array[i].signature);
953 env->UnregisterNatives(wbclass);
954 break;
955 }
956 }
957 }
958 }
959
960 #define CC (char*)
961
962 static JNINativeMethod methods[] = {
963 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
964 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
965 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
966 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
967 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
968 {CC"parseCommandLine",
969 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
970 (void*) &WB_ParseCommandLine
971 },
972 {CC"getCompressedOopsMaxHeapSize", CC"()J",
973 (void*)&WB_GetCompressedOopsMaxHeapSize},
974 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
975 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
976 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
977 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
978 #if INCLUDE_ALL_GCS
979 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
980 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
981 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
982 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
983 #endif // INCLUDE_ALL_GCS
984 #if INCLUDE_NMT
985 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
986 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
987 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
988 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
989 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
990 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
991 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
992 {CC"NMTOverflowHashBucket", CC"(J)V", (void*)&WB_NMTOverflowHashBucket},
993 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported},
994 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
995 #endif // INCLUDE_NMT
996 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
997 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
998 (void*)&WB_DeoptimizeMethod },
999 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z",
1000 (void*)&WB_IsMethodCompiled },
1001 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1002 (void*)&WB_IsMethodCompilable},
1003 {CC"isMethodQueuedForCompilation",
1004 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1005 {CC"makeMethodNotCompilable",
1006 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1007 {CC"testSetDontInlineMethod",
1008 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1009 {CC"getMethodCompilationLevel",
1010 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1011 {CC"getMethodEntryBci",
1012 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1013 {CC"getCompileQueueSize",
1014 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1015 {CC"testSetForceInlineMethod",
1016 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1017 {CC"enqueueMethodForCompilation",
1018 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1019 {CC"clearMethodState",
1020 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1021 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1022 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1023 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1024 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1025 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1026 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1027 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1028 (void*)&WB_SetStringVMFlag},
1029 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1030 (void*)&WB_GetBooleanVMFlag},
1031 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1032 (void*)&WB_GetIntxVMFlag},
1033 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1034 (void*)&WB_GetUintxVMFlag},
1035 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1036 (void*)&WB_GetUint64VMFlag},
1037 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1038 (void*)&WB_GetSizeTVMFlag},
1039 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1040 (void*)&WB_GetDoubleVMFlag},
1041 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1042 (void*)&WB_GetStringVMFlag},
1043 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1044 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1045 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1046 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1047 {CC"allocateMetaspace",
1048 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1049 {CC"freeMetaspace",
1050 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1051 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1052 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1053 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1054 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1055 (void*)&WB_GetNMethod },
1056 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1057 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1058 };
1059
1060 #undef CC
1061
1062 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1063 {
1064 if (WhiteBoxAPI) {
1065 // Make sure that wbclass is loaded by the null classloader
1066 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1067 Handle loader(ikh->class_loader());
1068 if (loader.is_null()) {
1069 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1070 WhiteBox::register_extended(env, wbclass, thread);
1071 WhiteBox::set_used();
1072 }
1073 }
1074 }
1075 JVM_END