1 /*
2 * Copyright (c) 2012, 2015, 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/stringTable.hpp"
31 #include "code/codeCache.hpp"
32 #include "jvmtifiles/jvmtiEnv.hpp"
33 #include "memory/metadataFactory.hpp"
34 #include "memory/metaspaceShared.hpp"
35 #include "memory/universe.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "prims/wbtestmethods/parserTests.hpp"
38 #include "prims/whitebox.hpp"
39 #include "runtime/arguments.hpp"
40 #include "runtime/compilationPolicy.hpp"
41 #include "runtime/deoptimization.hpp"
42 #include "runtime/interfaceSupport.hpp"
43 #include "runtime/javaCalls.hpp"
44 #include "runtime/os.hpp"
45 #include "runtime/sweeper.hpp"
46 #include "runtime/thread.hpp"
47 #include "runtime/vm_version.hpp"
48 #include "utilities/array.hpp"
49 #include "utilities/debug.hpp"
50 #include "utilities/exceptions.hpp"
51 #include "utilities/macros.hpp"
52 #if INCLUDE_ALL_GCS
53 #include "gc/g1/concurrentMark.hpp"
54 #include "gc/g1/concurrentMarkThread.hpp"
55 #include "gc/g1/g1CollectedHeap.inline.hpp"
56 #include "gc/g1/heapRegionRemSet.hpp"
57 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
58 #endif // INCLUDE_ALL_GCS
59 #if INCLUDE_NMT
60 #include "services/mallocSiteTable.hpp"
61 #include "services/memTracker.hpp"
62 #include "utilities/nativeCallStack.hpp"
63 #endif // INCLUDE_NMT
64
65
66 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
67
68 #define SIZE_T_MAX_VALUE ((size_t) -1)
69
70 bool WhiteBox::_used = false;
71 volatile bool WhiteBox::compilation_locked = false;
72
73 class VM_WhiteBoxOperation : public VM_Operation {
74 public:
75 VM_WhiteBoxOperation() { }
76 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
77 bool allow_nested_vm_operations() const { return true; }
78 };
79
80
81 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
82 return (jlong)(void*)JNIHandles::resolve(obj);
83 WB_END
84
85 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
86 return heapOopSize;
87 WB_END
88
89 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
90 return os::vm_page_size();
91 WB_END
92
93 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
94 return os::vm_allocation_granularity();
95 WB_END
96
97 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
98 return os::large_page_size();
99 WB_END
100
101 class WBIsKlassAliveClosure : public KlassClosure {
102 Symbol* _name;
103 bool _found;
104 public:
105 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
106
107 void do_klass(Klass* k) {
108 if (_found) return;
109 Symbol* ksym = k->name();
110 if (ksym->fast_compare(_name) == 0) {
111 _found = true;
112 }
113 }
114
115 bool found() const {
116 return _found;
117 }
118 };
119
120 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
121 Handle h_name = JNIHandles::resolve(name);
122 if (h_name.is_null()) return false;
123 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
124 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
125
126 WBIsKlassAliveClosure closure(sym);
127 ClassLoaderDataGraph::classes_do(&closure);
128
129 return closure.found();
130 WB_END
131
132 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
133 #if INCLUDE_JVMTI
134 ResourceMark rm;
135 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
136 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
137 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
138 assert(err == JVMTI_ERROR_NONE, "must not fail");
139 #endif
140 }
141 WB_END
142
143 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
144 #if INCLUDE_JVMTI
145 ResourceMark rm;
146 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
147 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
148 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
149 assert(err == JVMTI_ERROR_NONE, "must not fail");
150 #endif
151 }
152 WB_END
153
154
155 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
156 return (jlong)Arguments::max_heap_for_compressed_oops();
157 }
158 WB_END
159
160 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
161 CollectorPolicy * p = Universe::heap()->collector_policy();
162 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
163 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Space alignment "SIZE_FORMAT" Heap alignment "SIZE_FORMAT,
164 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
165 p->space_alignment(), p->heap_alignment());
166 }
167 WB_END
168
169 #ifndef PRODUCT
170 // Forward declaration
171 void TestReservedSpace_test();
172 void TestReserveMemorySpecial_test();
173 void TestVirtualSpace_test();
174 void TestMetaspaceAux_test();
175 #endif
176
177 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
178 #ifndef PRODUCT
179 TestReservedSpace_test();
180 TestReserveMemorySpecial_test();
181 TestVirtualSpace_test();
182 TestMetaspaceAux_test();
183 #endif
184 WB_END
185
186 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
187 size_t granularity = os::vm_allocation_granularity();
188 ReservedHeapSpace rhs(100 * granularity, granularity, false);
189 VirtualSpace vs;
190 vs.initialize(rhs, 50 * granularity);
191
192 // Check if constraints are complied
193 if (!( UseCompressedOops && rhs.base() != NULL &&
194 Universe::narrow_oop_base() != NULL &&
195 Universe::narrow_oop_use_implicit_null_checks() )) {
196 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
197 "\tUseCompressedOops is %d\n"
198 "\trhs.base() is "PTR_FORMAT"\n"
199 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
200 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
201 UseCompressedOops,
202 rhs.base(),
203 Universe::narrow_oop_base(),
204 Universe::narrow_oop_use_implicit_null_checks());
205 return;
206 }
207 tty->print_cr("Reading from no access area... ");
208 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
209 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
210 WB_END
211
212 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
213 size_t magnitude, size_t iterations) {
214 size_t granularity = os::vm_allocation_granularity();
215 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
216 VirtualSpace vs;
217 if (!vs.initialize(rhs, 0)) {
218 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
219 return 3;
220 }
221
222 long seed = os::random();
223 tty->print_cr("Random seed is %ld", seed);
224 os::init_random(seed);
225
226 for (size_t i = 0; i < iterations; i++) {
227
228 // Whether we will shrink or grow
229 bool shrink = os::random() % 2L == 0;
230
231 // Get random delta to resize virtual space
232 size_t delta = (size_t)os::random() % magnitude;
233
234 // If we are about to shrink virtual space below zero, then expand instead
235 if (shrink && vs.committed_size() < delta) {
236 shrink = false;
237 }
238
239 // Resizing by delta
240 if (shrink) {
241 vs.shrink_by(delta);
242 } else {
243 // If expanding fails expand_by will silently return false
244 vs.expand_by(delta, true);
245 }
246 }
247 return 0;
248 }
249
250 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
251 jlong reserved_space_size, jlong magnitude, jlong iterations))
252 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
253 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
254 iterations);
255 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
256 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
257 return 1;
258 }
259
260 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
261 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
262 if (sizeof(size_t) < sizeof(jlong)) {
263 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
264 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
265 || iterations > size_t_max_value) {
266 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
267 return 2;
268 }
269 }
270
271 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
272 (size_t) magnitude, (size_t) iterations);
273 WB_END
274
275 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
276 oop p = JNIHandles::resolve(obj);
277 #if INCLUDE_ALL_GCS
278 if (UseG1GC) {
279 G1CollectedHeap* g1 = G1CollectedHeap::heap();
280 const HeapRegion* hr = g1->heap_region_containing(p);
281 if (hr == NULL) {
282 return false;
283 }
284 return !(hr->is_young());
285 } else if (UseParallelGC) {
286 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
287 return !psh->is_in_young(p);
288 }
289 #endif // INCLUDE_ALL_GCS
290 GenCollectedHeap* gch = GenCollectedHeap::heap();
291 return !gch->is_in_young(p);
292 WB_END
293
294 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
295 oop p = JNIHandles::resolve(obj);
296 return p->size() * HeapWordSize;
297 WB_END
298
299 #if INCLUDE_ALL_GCS
300 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
301 G1CollectedHeap* g1 = G1CollectedHeap::heap();
302 oop result = JNIHandles::resolve(obj);
303 const HeapRegion* hr = g1->heap_region_containing(result);
304 return hr->is_humongous();
305 WB_END
306
307 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
308 G1CollectedHeap* g1 = G1CollectedHeap::heap();
309 size_t nr = g1->max_regions();
310 return (jlong)nr;
311 WB_END
312
313 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
314 G1CollectedHeap* g1 = G1CollectedHeap::heap();
315 size_t nr = g1->num_free_regions();
316 return (jlong)nr;
317 WB_END
318
319 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
320 G1CollectedHeap* g1 = G1CollectedHeap::heap();
321 return g1->concurrent_mark()->cmThread()->during_cycle();
322 WB_END
323
324 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
325 G1CollectedHeap* g1h = G1CollectedHeap::heap();
326 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
327 g1h->collect(GCCause::_wb_conc_mark);
328 return true;
329 }
330 return false;
331 WB_END
332
333 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
334 return (jint)HeapRegion::GrainBytes;
335 WB_END
336
337 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
338 ResourceMark rm(THREAD);
339 G1CollectedHeap* g1h = G1CollectedHeap::heap();
340 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
341 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
342 return JNIHandles::make_local(env, h());
343 WB_END
344 #endif // INCLUDE_ALL_GCS
345
346 #if INCLUDE_NMT
347 // Alloc memory using the test memory type so that we can use that to see if
348 // NMT picks it up correctly
349 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
350 jlong addr = 0;
351 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
352 return addr;
353 WB_END
354
355 // Alloc memory with pseudo call stack. The test can create psudo malloc
356 // allocation site to stress the malloc tracking.
357 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
358 address pc = (address)(size_t)pseudo_stack;
359 NativeCallStack stack(&pc, 1);
360 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
361 WB_END
362
363 // Free the memory allocated by NMTAllocTest
364 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
365 os::free((void*)(uintptr_t)mem);
366 WB_END
367
368 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
369 jlong addr = 0;
370
371 addr = (jlong)(uintptr_t)os::reserve_memory(size);
372 MemTracker::record_virtual_memory_type((address)addr, mtTest);
373
374 return addr;
375 WB_END
376
377 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
378 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
379 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
380 WB_END
381
382 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
383 os::uncommit_memory((char *)(uintptr_t)addr, size);
384 WB_END
385
386 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
387 os::release_memory((char *)(uintptr_t)addr, size);
388 WB_END
389
390 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
391 // Test that we can downgrade NMT levels but not upgrade them.
392 if (MemTracker::tracking_level() == NMT_off) {
393 MemTracker::transition_to(NMT_off);
394 return MemTracker::tracking_level() == NMT_off;
395 } else {
396 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
397 MemTracker::transition_to(NMT_summary);
398 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
399
400 // Can't go to detail once NMT is set to summary.
401 MemTracker::transition_to(NMT_detail);
402 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
403
404 // Shutdown sets tracking level to minimal.
405 MemTracker::shutdown();
406 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
407
408 // Once the tracking level is minimal, we cannot increase to summary.
409 // The code ignores this request instead of asserting because if the malloc site
410 // table overflows in another thread, it tries to change the code to summary.
411 MemTracker::transition_to(NMT_summary);
412 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
413
414 // Really can never go up to detail, verify that the code would never do this.
415 MemTracker::transition_to(NMT_detail);
416 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
417 return MemTracker::tracking_level() == NMT_minimal;
418 }
419 WB_END
420
421 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
422 int hash_size = MallocSiteTable::hash_buckets();
423 assert(hash_size > 0, "NMT hash_size should be > 0");
424 return (jint)hash_size;
425 WB_END
426 #endif // INCLUDE_NMT
427
428 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
429 assert(method != NULL, "method should not be null");
430 ThreadToNativeFromVM ttn(thread);
431 return env->FromReflectedMethod(method);
432 }
433
434 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
435 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
436 private:
437 int _result;
438 const bool _make_not_entrant;
439 public:
440 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
441 _result(0), _make_not_entrant(make_not_entrant) { }
442 int result() const { return _result; }
443
444 void doit() {
445 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
446 if (t->has_last_Java_frame()) {
447 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
448 frame* f = fst.current();
449 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
450 RegisterMap* reg_map = fst.register_map();
451 Deoptimization::deoptimize(t, *f, reg_map);
452 if (_make_not_entrant) {
453 nmethod* nm = CodeCache::find_nmethod(f->pc());
454 assert(nm != NULL, "sanity check");
455 nm->make_not_entrant();
456 }
457 ++_result;
458 }
459 }
460 }
461 }
462 }
463 };
464
465 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
466 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
467 VMThread::execute(&op);
468 return op.result();
469 WB_END
470
471 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
472 MutexLockerEx mu(Compile_lock);
473 CodeCache::mark_all_nmethods_for_deoptimization();
474 VM_Deoptimize op;
475 VMThread::execute(&op);
476 WB_END
477
478 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
479 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
480 int result = 0;
481 CHECK_JNI_EXCEPTION_(env, result);
482 MutexLockerEx mu(Compile_lock);
483 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
484 if (is_osr) {
485 result += mh->mark_osr_nmethods();
486 } else if (mh->code() != NULL) {
487 mh->code()->mark_for_deoptimization();
488 ++result;
489 }
490 result += CodeCache::mark_for_deoptimization(mh());
491 if (result > 0) {
492 VM_Deoptimize op;
493 VMThread::execute(&op);
494 }
495 return result;
496 WB_END
497
498 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
499 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
500 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
501 MutexLockerEx mu(Compile_lock);
502 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
503 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
504 if (code == NULL) {
505 return JNI_FALSE;
506 }
507 return (code->is_alive() && !code->is_marked_for_deoptimization());
508 WB_END
509
510 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
511 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
512 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
513 MutexLockerEx mu(Compile_lock);
514 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
515 if (is_osr) {
516 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
517 } else {
518 return CompilationPolicy::can_be_compiled(mh, comp_level);
519 }
520 WB_END
521
522 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
523 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
524 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
525 MutexLockerEx mu(Compile_lock);
526 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
527 return mh->queued_for_compilation();
528 WB_END
529
530 WB_ENTRY(jboolean, WB_IsIntrinsicAvailableForMethod(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
531 if (compLevel < CompLevel_none || compLevel > CompLevel_highest_tier) {
532 return false; // Intrinsic is not available on a non-existent compilation level.
533 }
534 jmethodID method_id, compilation_context_id;
535 method_id = reflected_method_to_jmid(thread, env, method);
536 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
537 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
538 if (compilation_context != NULL) {
539 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
540 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
541 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
542 return CompileBroker::compiler(compLevel)->is_intrinsic_available_for(mh, cch);
543 } else {
544 return CompileBroker::compiler(compLevel)->is_intrinsic_available_for(mh);
545 }
546 WB_END
547
548 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
549 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
550 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
551 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
552 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
553 return (code != NULL ? code->comp_level() : CompLevel_none);
554 WB_END
555
556 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
557 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
558 CHECK_JNI_EXCEPTION(env);
559 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
560 if (is_osr) {
561 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
562 } else {
563 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
564 }
565 WB_END
566
567 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
568 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
569 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
570 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
571 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
572 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
573 WB_END
574
575 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
576 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
577 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
578 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
579 bool result = mh->dont_inline();
580 mh->set_dont_inline(value == JNI_TRUE);
581 return result;
582 WB_END
583
584 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
585 if (comp_level == CompLevel_any) {
586 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
587 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
588 } else {
589 return CompileBroker::queue_size(comp_level);
590 }
591 WB_END
592
593 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
594 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
595 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
596 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
597 bool result = mh->force_inline();
598 mh->set_force_inline(value == JNI_TRUE);
599 return result;
600 WB_END
601
602 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
603 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
604 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
605 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
606 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
607 MutexLockerEx mu(Compile_lock);
608 return (mh->queued_for_compilation() || nm != NULL);
609 WB_END
610
611 class AlwaysFalseClosure : public BoolObjectClosure {
612 public:
613 bool do_object_b(oop p) { return false; }
614 };
615
616 static AlwaysFalseClosure always_false;
617
618 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
619 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
620 CHECK_JNI_EXCEPTION(env);
621 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
622 MutexLockerEx mu(Compile_lock);
623 MethodData* mdo = mh->method_data();
624 MethodCounters* mcs = mh->method_counters();
625
626 if (mdo != NULL) {
627 mdo->init();
628 ResourceMark rm;
629 int arg_count = mdo->method()->size_of_parameters();
630 for (int i = 0; i < arg_count; i++) {
631 mdo->set_arg_modified(i, 0);
632 }
633 MutexLockerEx mu(mdo->extra_data_lock());
634 mdo->clean_method_data(&always_false);
635 }
636
637 mh->clear_not_c1_compilable();
638 mh->clear_not_c2_compilable();
639 mh->clear_not_c2_osr_compilable();
640 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
641 if (mcs != NULL) {
642 mcs->backedge_counter()->init();
643 mcs->invocation_counter()->init();
644 mcs->set_interpreter_invocation_count(0);
645 mcs->set_interpreter_throwout_count(0);
646
647 #ifdef TIERED
648 mcs->set_rate(0.0F);
649 mh->set_prev_event_count(0);
650 mh->set_prev_time(0);
651 #endif
652 }
653 WB_END
654
655 template <typename T>
656 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
657 if (name == NULL) {
658 return false;
659 }
660 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
661 const char* flag_name = env->GetStringUTFChars(name, NULL);
662 Flag::Error result = (*TAt)(flag_name, value, true, true);
663 env->ReleaseStringUTFChars(name, flag_name);
664 return (result == Flag::SUCCESS);
665 }
666
667 template <typename T>
668 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
669 if (name == NULL) {
670 return false;
671 }
672 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
673 const char* flag_name = env->GetStringUTFChars(name, NULL);
674 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
675 env->ReleaseStringUTFChars(name, flag_name);
676 return (result == Flag::SUCCESS);
677 }
678
679 template <typename T>
680 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
681 ResourceMark rm(thread);
682 jclass clazz = env->FindClass(name->as_C_string());
683 CHECK_JNI_EXCEPTION_(env, NULL);
684 jmethodID methodID = env->GetStaticMethodID(clazz,
685 vmSymbols::valueOf_name()->as_C_string(),
686 sig->as_C_string());
687 CHECK_JNI_EXCEPTION_(env, NULL);
688 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
689 CHECK_JNI_EXCEPTION_(env, NULL);
690 return result;
691 }
692
693 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
694 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
695 }
696 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
697 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
698 }
699 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
700 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
701 }
702 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
703 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
704 }*/
705 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
706 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
707 }
708
709 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
710 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
711 const char* flag_name = env->GetStringUTFChars(name, NULL);
712 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
713 env->ReleaseStringUTFChars(name, flag_name);
714 return result;
715 }
716
717 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
718 Flag* flag = getVMFlag(thread, env, name);
719 return (flag != NULL) && flag->is_constant_in_binary();
720 WB_END
721
722 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
723 Flag* flag = getVMFlag(thread, env, name);
724 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
725 WB_END
726
727 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
728 bool result;
729 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
730 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
731 return booleanBox(thread, env, result);
732 }
733 return NULL;
734 WB_END
735
736 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
737 int result;
738 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
739 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
740 return longBox(thread, env, result);
741 }
742 return NULL;
743 WB_END
744
745 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
746 uint result;
747 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
748 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
749 return longBox(thread, env, result);
750 }
751 return NULL;
752 WB_END
753
754 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
755 intx result;
756 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
757 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
758 return longBox(thread, env, result);
759 }
760 return NULL;
761 WB_END
762
763 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
764 uintx result;
765 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
766 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
767 return longBox(thread, env, result);
768 }
769 return NULL;
770 WB_END
771
772 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
773 uint64_t result;
774 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
775 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
776 return longBox(thread, env, result);
777 }
778 return NULL;
779 WB_END
780
781 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
782 uintx result;
783 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
784 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
785 return longBox(thread, env, result);
786 }
787 return NULL;
788 WB_END
789
790 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
791 double result;
792 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
793 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
794 return doubleBox(thread, env, result);
795 }
796 return NULL;
797 WB_END
798
799 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
800 ccstr ccstrResult;
801 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
802 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
803 jstring result = env->NewStringUTF(ccstrResult);
804 CHECK_JNI_EXCEPTION_(env, NULL);
805 return result;
806 }
807 return NULL;
808 WB_END
809
810 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
811 bool result = value == JNI_TRUE ? true : false;
812 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
813 WB_END
814
815 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
816 int result = value;
817 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
818 WB_END
819
820 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
821 uint result = value;
822 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
823 WB_END
824
825 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
826 intx result = value;
827 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
828 WB_END
829
830 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
831 uintx result = value;
832 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
833 WB_END
834
835 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
836 uint64_t result = value;
837 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
838 WB_END
839
840 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
841 size_t result = value;
842 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
843 WB_END
844
845 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
846 double result = value;
847 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
848 WB_END
849
850 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
851 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
852 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
853 ccstr ccstrResult = ccstrValue;
854 bool needFree;
855 {
856 ThreadInVMfromNative ttvfn(thread); // back to VM
857 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
858 }
859 if (value != NULL) {
860 env->ReleaseStringUTFChars(value, ccstrValue);
861 }
862 if (needFree) {
863 FREE_C_HEAP_ARRAY(char, ccstrResult);
864 }
865 WB_END
866
867 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
868 WhiteBox::compilation_locked = true;
869 WB_END
870
871 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
872 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
873 WhiteBox::compilation_locked = false;
874 mo.notify_all();
875 WB_END
876
877 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
878 // Force a code cache sweep and block until it finished
879 NMethodSweeper::force_sweep();
880 WB_END
881
882 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
883 ResourceMark rm(THREAD);
884 int len;
885 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
886 return (StringTable::lookup(name, len) != NULL);
887 WB_END
888
889 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
890 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
891 Universe::heap()->collect(GCCause::_last_ditch_collection);
892 #if INCLUDE_ALL_GCS
893 if (UseG1GC) {
894 // Needs to be cleared explicitly for G1
895 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
896 }
897 #endif // INCLUDE_ALL_GCS
898 WB_END
899
900 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
901 Universe::heap()->collect(GCCause::_wb_young_gc);
902 WB_END
903
904 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
905 // static+volatile in order to force the read to happen
906 // (not be eliminated by the compiler)
907 static char c;
908 static volatile char* p;
909
910 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
911 if (p == NULL) {
912 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
913 }
914
915 c = *p;
916 WB_END
917
918 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
919 const char* cpu_features = VM_Version::cpu_features();
920 ThreadToNativeFromVM ttn(thread);
921 jstring features_string = env->NewStringUTF(cpu_features);
922
923 CHECK_JNI_EXCEPTION_(env, NULL);
924
925 return features_string;
926 WB_END
927
928 int WhiteBox::get_blob_type(const CodeBlob* code) {
929 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
930 return CodeCache::get_code_heap(code)->code_blob_type();
931 }
932
933 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
934 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
935 return CodeCache::get_code_heap(blob_type);
936 }
937
938 struct CodeBlobStub {
939 CodeBlobStub(const CodeBlob* blob) :
940 name(os::strdup(blob->name())),
941 size(blob->size()),
942 blob_type(WhiteBox::get_blob_type(blob)) { }
943 ~CodeBlobStub() { os::free((void*) name); }
944 const char* const name;
945 const int size;
946 const int blob_type;
947 };
948
949 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
950 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
951 CHECK_JNI_EXCEPTION_(env, NULL);
952 jobjectArray result = env->NewObjectArray(3, clazz, NULL);
953
954 jstring name = env->NewStringUTF(cb->name);
955 CHECK_JNI_EXCEPTION_(env, NULL);
956 env->SetObjectArrayElement(result, 0, name);
957
958 jobject obj = integerBox(thread, env, cb->size);
959 CHECK_JNI_EXCEPTION_(env, NULL);
960 env->SetObjectArrayElement(result, 1, obj);
961
962 obj = integerBox(thread, env, cb->blob_type);
963 CHECK_JNI_EXCEPTION_(env, NULL);
964 env->SetObjectArrayElement(result, 2, obj);
965
966 return result;
967 }
968
969 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
970 ResourceMark rm(THREAD);
971 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
972 CHECK_JNI_EXCEPTION_(env, NULL);
973 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
974 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
975 jobjectArray result = NULL;
976 if (code == NULL) {
977 return result;
978 }
979 int insts_size = code->insts_size();
980
981 ThreadToNativeFromVM ttn(thread);
982 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
983 CHECK_JNI_EXCEPTION_(env, NULL);
984 result = env->NewObjectArray(4, clazz, NULL);
985 if (result == NULL) {
986 return result;
987 }
988
989 CodeBlobStub stub(code);
990 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
991 env->SetObjectArrayElement(result, 0, codeBlob);
992
993 jobject level = integerBox(thread, env, code->comp_level());
994 CHECK_JNI_EXCEPTION_(env, NULL);
995 env->SetObjectArrayElement(result, 1, level);
996
997 jbyteArray insts = env->NewByteArray(insts_size);
998 CHECK_JNI_EXCEPTION_(env, NULL);
999 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1000 env->SetObjectArrayElement(result, 2, insts);
1001
1002 jobject id = integerBox(thread, env, code->compile_id());
1003 CHECK_JNI_EXCEPTION_(env, NULL);
1004 env->SetObjectArrayElement(result, 3, id);
1005
1006 return result;
1007 WB_END
1008
1009 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1010 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1011 BufferBlob* blob;
1012 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1013 if (full_size < size) {
1014 full_size += round_to(size - full_size, oopSize);
1015 }
1016 {
1017 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1018 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1019 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1020 }
1021 // Track memory usage statistic after releasing CodeCache_lock
1022 MemoryService::track_code_cache_memory_usage();
1023 return blob;
1024 }
1025
1026 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1027 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1028 WB_END
1029
1030 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1031 BufferBlob::free((BufferBlob*) addr);
1032 WB_END
1033
1034 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1035 ResourceMark rm;
1036 GrowableArray<CodeBlobStub*> blobs;
1037 {
1038 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1039 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1040 if (heap == NULL) {
1041 return NULL;
1042 }
1043 for (CodeBlob* cb = (CodeBlob*) heap->first();
1044 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1045 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1046 new (stub) CodeBlobStub(cb);
1047 blobs.append(stub);
1048 }
1049 }
1050 if (blobs.length() == 0) {
1051 return NULL;
1052 }
1053 ThreadToNativeFromVM ttn(thread);
1054 jobjectArray result = NULL;
1055 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1056 CHECK_JNI_EXCEPTION_(env, NULL);
1057 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1058 if (result == NULL) {
1059 return result;
1060 }
1061 int i = 0;
1062 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1063 it != blobs.end(); ++it) {
1064 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1065 env->SetObjectArrayElement(result, i, obj);
1066 ++i;
1067 }
1068 return result;
1069 WB_END
1070
1071 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1072 return CompileBroker::get_compilation_activity_mode();
1073 WB_END
1074
1075 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1076 ThreadToNativeFromVM ttn(thread);
1077 CodeBlobStub stub((CodeBlob*) addr);
1078 return codeBlob2objectArray(thread, env, &stub);
1079 WB_END
1080
1081 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1082 return (jlong) Thread::current()->stack_size();
1083 WB_END
1084
1085 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1086 JavaThread* t = JavaThread::current();
1087 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong) StackShadowPages * os::vm_page_size();
1088 WB_END
1089
1090 int WhiteBox::array_bytes_to_length(size_t bytes) {
1091 return Array<u1>::bytes_to_length(bytes);
1092 }
1093
1094 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1095 if (size < 0) {
1096 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1097 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1098 }
1099
1100 oop class_loader_oop = JNIHandles::resolve(class_loader);
1101 ClassLoaderData* cld = class_loader_oop != NULL
1102 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1103 : ClassLoaderData::the_null_class_loader_data();
1104
1105 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1106
1107 return (jlong)(uintptr_t)metadata;
1108 WB_END
1109
1110 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1111 oop class_loader_oop = JNIHandles::resolve(class_loader);
1112 ClassLoaderData* cld = class_loader_oop != NULL
1113 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1114 : ClassLoaderData::the_null_class_loader_data();
1115
1116 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1117 WB_END
1118
1119 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1120 if (inc < 0) {
1121 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1122 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1123 }
1124
1125 jlong max_size_t = (jlong) ((size_t) -1);
1126 if (inc > max_size_t) {
1127 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1128 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1129 }
1130
1131 size_t new_cap_until_GC = 0;
1132 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1133 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1134 if (!success) {
1135 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1136 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1137 "due to contention with another thread");
1138 }
1139 return (jlong) new_cap_until_GC;
1140 WB_END
1141
1142 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1143 return (jlong) MetaspaceGC::capacity_until_GC();
1144 WB_END
1145
1146 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1147 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1148 Monitor::_safepoint_check_always :
1149 Monitor::_safepoint_check_never;
1150 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1151 attemptedNoSafepointValue == JNI_TRUE);
1152 WB_END
1153
1154 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1155 oop obj_oop = JNIHandles::resolve(obj);
1156 return (jboolean) obj_oop->mark()->has_monitor();
1157 WB_END
1158
1159 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1160 VM_ForceSafepoint force_safepoint_op;
1161 VMThread::execute(&force_safepoint_op);
1162 WB_END
1163
1164 template <typename T>
1165 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1166 assert(value != NULL, "sanity");
1167 if (method == NULL || name == NULL) {
1168 return false;
1169 }
1170 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1171 CHECK_JNI_EXCEPTION_(env, false);
1172 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1173 // can't be in VM when we call JNI
1174 ThreadToNativeFromVM ttnfv(thread);
1175 const char* flag_name = env->GetStringUTFChars(name, NULL);
1176 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1177 env->ReleaseStringUTFChars(name, flag_name);
1178 return result;
1179 }
1180
1181 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1182 bool result;
1183 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1184 // can't be in VM when we call JNI
1185 ThreadToNativeFromVM ttnfv(thread);
1186 return booleanBox(thread, env, result);
1187 }
1188 return NULL;
1189 WB_END
1190
1191 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1192 intx result;
1193 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1194 // can't be in VM when we call JNI
1195 ThreadToNativeFromVM ttnfv(thread);
1196 return longBox(thread, env, result);
1197 }
1198 return NULL;
1199 WB_END
1200
1201 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1202 uintx result;
1203 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1204 // can't be in VM when we call JNI
1205 ThreadToNativeFromVM ttnfv(thread);
1206 return longBox(thread, env, result);
1207 }
1208 return NULL;
1209 WB_END
1210
1211 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1212 double result;
1213 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1214 // can't be in VM when we call JNI
1215 ThreadToNativeFromVM ttnfv(thread);
1216 return doubleBox(thread, env, result);
1217 }
1218 return NULL;
1219 WB_END
1220
1221 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1222 ccstr ccstrResult;
1223 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1224 // can't be in VM when we call JNI
1225 ThreadToNativeFromVM ttnfv(thread);
1226 jstring result = env->NewStringUTF(ccstrResult);
1227 CHECK_JNI_EXCEPTION_(env, NULL);
1228 return result;
1229 }
1230 return NULL;
1231 WB_END
1232
1233 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1234 oop obj_oop = JNIHandles::resolve(obj);
1235 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1236 WB_END
1237
1238 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1239 return StringTable::shared_string_ignored();
1240 WB_END
1241
1242 //Some convenience methods to deal with objects from java
1243 int WhiteBox::offset_for_field(const char* field_name, oop object,
1244 Symbol* signature_symbol) {
1245 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1246 Thread* THREAD = Thread::current();
1247
1248 //Get the class of our object
1249 Klass* arg_klass = object->klass();
1250 //Turn it into an instance-klass
1251 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1252
1253 //Create symbols to look for in the class
1254 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1255 THREAD);
1256
1257 //To be filled in with an offset of the field we're looking for
1258 fieldDescriptor fd;
1259
1260 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1261 if (res == NULL) {
1262 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1263 name_symbol->as_C_string());
1264 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
1265 }
1266
1267 //fetch the field at the offset we've found
1268 int dest_offset = fd.offset();
1269
1270 return dest_offset;
1271 }
1272
1273
1274 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1275 int offset = offset_for_field(field_name, object,
1276 vmSymbols::string_signature());
1277 oop string = object->obj_field(offset);
1278 if (string == NULL) {
1279 return NULL;
1280 }
1281 const char* ret = java_lang_String::as_utf8_string(string);
1282 return ret;
1283 }
1284
1285 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1286 int offset =
1287 offset_for_field(field_name, object, vmSymbols::bool_signature());
1288 bool ret = (object->bool_field(offset) == JNI_TRUE);
1289 return ret;
1290 }
1291
1292 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1293 ResourceMark rm;
1294 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1295
1296 // one by one registration natives for exception catching
1297 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1298 CHECK_JNI_EXCEPTION(env);
1299 for (int i = 0, n = method_count; i < n; ++i) {
1300 // Skip dummy entries
1301 if (method_array[i].fnPtr == NULL) continue;
1302 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1303 jthrowable throwable_obj = env->ExceptionOccurred();
1304 if (throwable_obj != NULL) {
1305 env->ExceptionClear();
1306 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1307 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1308 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1309 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1310 method_array[i].name, method_array[i].signature);
1311 }
1312 } else {
1313 // Registration failed unexpectedly.
1314 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1315 method_array[i].name, method_array[i].signature);
1316 env->UnregisterNatives(wbclass);
1317 break;
1318 }
1319 }
1320 }
1321 }
1322
1323 #define CC (char*)
1324
1325 static JNINativeMethod methods[] = {
1326 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1327 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1328 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1329 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1330 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1331 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1332 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1333 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1334 {CC"parseCommandLine0",
1335 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1336 (void*) &WB_ParseCommandLine
1337 },
1338 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1339 (void*)&WB_AddToBootstrapClassLoaderSearch},
1340 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1341 (void*)&WB_AddToSystemClassLoaderSearch},
1342 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1343 (void*)&WB_GetCompressedOopsMaxHeapSize},
1344 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1345 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1346 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1347 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1348 #if INCLUDE_ALL_GCS
1349 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1350 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1351 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1352 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1353 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1354 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1355 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1356 (void*)&WB_G1AuxiliaryMemoryUsage },
1357 #endif // INCLUDE_ALL_GCS
1358 #if INCLUDE_NMT
1359 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1360 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1361 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1362 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1363 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1364 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1365 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1366 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1367 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1368 #endif // INCLUDE_NMT
1369 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1370 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1371 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1372 (void*)&WB_DeoptimizeMethod },
1373 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1374 (void*)&WB_IsMethodCompiled },
1375 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1376 (void*)&WB_IsMethodCompilable},
1377 {CC"isMethodQueuedForCompilation0",
1378 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1379 {CC"isIntrinsicAvailableForMethod0",
1380 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1381 (void*)&WB_IsIntrinsicAvailableForMethod},
1382 {CC"makeMethodNotCompilable0",
1383 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1384 {CC"testSetDontInlineMethod0",
1385 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1386 {CC"getMethodCompilationLevel0",
1387 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1388 {CC"getMethodEntryBci0",
1389 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1390 {CC"getCompileQueueSize",
1391 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1392 {CC"testSetForceInlineMethod0",
1393 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1394 {CC"enqueueMethodForCompilation0",
1395 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1396 {CC"clearMethodState0",
1397 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1398 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1399 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1400 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1401 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1402 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1403 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1404 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1405 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1406 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1407 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1408 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1409 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1410 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1411 (void*)&WB_SetStringVMFlag},
1412 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1413 (void*)&WB_GetBooleanVMFlag},
1414 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1415 (void*)&WB_GetIntVMFlag},
1416 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1417 (void*)&WB_GetUintVMFlag},
1418 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1419 (void*)&WB_GetIntxVMFlag},
1420 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1421 (void*)&WB_GetUintxVMFlag},
1422 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1423 (void*)&WB_GetUint64VMFlag},
1424 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1425 (void*)&WB_GetSizeTVMFlag},
1426 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1427 (void*)&WB_GetDoubleVMFlag},
1428 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1429 (void*)&WB_GetStringVMFlag},
1430 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1431 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1432 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1433 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1434 {CC"allocateMetaspace",
1435 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1436 {CC"freeMetaspace",
1437 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1438 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1439 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1440 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1441 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1442 (void*)&WB_GetNMethod },
1443 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1444 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1445 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1446 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1447 {CC"getCompilationActivityMode",
1448 CC"()I", (void*)&WB_GetCompilationActivityMode},
1449 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1450 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1451 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1452 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1453 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1454 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1455 {CC"getMethodBooleanOption",
1456 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1457 (void*)&WB_GetMethodBooleaneOption},
1458 {CC"getMethodIntxOption",
1459 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1460 (void*)&WB_GetMethodIntxOption},
1461 {CC"getMethodUintxOption",
1462 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1463 (void*)&WB_GetMethodUintxOption},
1464 {CC"getMethodDoubleOption",
1465 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1466 (void*)&WB_GetMethodDoubleOption},
1467 {CC"getMethodStringOption",
1468 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1469 (void*)&WB_GetMethodStringOption},
1470 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1471 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1472 };
1473
1474 #undef CC
1475
1476 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1477 {
1478 if (WhiteBoxAPI) {
1479 // Make sure that wbclass is loaded by the null classloader
1480 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1481 Handle loader(ikh->class_loader());
1482 if (loader.is_null()) {
1483 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1484 WhiteBox::register_extended(env, wbclass, thread);
1485 WhiteBox::set_used();
1486 }
1487 }
1488 }
1489 JVM_END