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 "compiler/methodMatcher.hpp"
33 #include "jvmtifiles/jvmtiEnv.hpp"
34 #include "memory/metadataFactory.hpp"
35 #include "memory/metaspaceShared.hpp"
36 #include "memory/universe.hpp"
37 #include "oops/oop.inline.hpp"
38 #include "prims/wbtestmethods/parserTests.hpp"
39 #include "prims/whitebox.hpp"
40 #include "runtime/arguments.hpp"
41 #include "runtime/compilationPolicy.hpp"
42 #include "runtime/deoptimization.hpp"
43 #include "runtime/interfaceSupport.hpp"
44 #include "runtime/javaCalls.hpp"
45 #include "runtime/os.hpp"
46 #include "runtime/sweeper.hpp"
47 #include "runtime/thread.hpp"
48 #include "runtime/vm_version.hpp"
49 #include "utilities/array.hpp"
50 #include "utilities/debug.hpp"
51 #include "utilities/exceptions.hpp"
52 #include "utilities/macros.hpp"
53 #if INCLUDE_ALL_GCS
54 #include "gc/g1/concurrentMark.hpp"
55 #include "gc/g1/concurrentMarkThread.hpp"
56 #include "gc/g1/g1CollectedHeap.inline.hpp"
57 #include "gc/g1/heapRegionRemSet.hpp"
58 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
59 #include "gc/parallel/adjoiningGenerations.hpp"
60 #endif // INCLUDE_ALL_GCS
61 #if INCLUDE_NMT
62 #include "services/mallocSiteTable.hpp"
63 #include "services/memTracker.hpp"
64 #include "utilities/nativeCallStack.hpp"
65 #endif // INCLUDE_NMT
66
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 p2i(rhs.base()),
203 p2i(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 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
300 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
301 return (jlong)alignment;
302 WB_END
303
304 #if INCLUDE_ALL_GCS
305 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
306 G1CollectedHeap* g1 = G1CollectedHeap::heap();
307 oop result = JNIHandles::resolve(obj);
308 const HeapRegion* hr = g1->heap_region_containing(result);
309 return hr->is_humongous();
310 WB_END
311
312 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
313 G1CollectedHeap* g1 = G1CollectedHeap::heap();
314 size_t nr = g1->max_regions();
315 return (jlong)nr;
316 WB_END
317
318 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
319 G1CollectedHeap* g1 = G1CollectedHeap::heap();
320 size_t nr = g1->num_free_regions();
321 return (jlong)nr;
322 WB_END
323
324 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
325 G1CollectedHeap* g1 = G1CollectedHeap::heap();
326 return g1->concurrent_mark()->cmThread()->during_cycle();
327 WB_END
328
329 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
330 G1CollectedHeap* g1h = G1CollectedHeap::heap();
331 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
332 g1h->collect(GCCause::_wb_conc_mark);
333 return true;
334 }
335 return false;
336 WB_END
337
338 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
339 return (jint)HeapRegion::GrainBytes;
340 WB_END
341
342 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
343 ParallelScavengeHeap* ps = ParallelScavengeHeap::heap();
344 size_t alignment = ps->gens()->virtual_spaces()->alignment();
345 return (jlong)alignment;
346 WB_END
347
348 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
349 size_t alignment = ParallelScavengeHeap::heap()->generation_alignment();
350 return (jlong)alignment;
351 WB_END
352
353 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
354 ResourceMark rm(THREAD);
355 G1CollectedHeap* g1h = G1CollectedHeap::heap();
356 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
357 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
358 return JNIHandles::make_local(env, h());
359 WB_END
360 #endif // INCLUDE_ALL_GCS
361
362 #if INCLUDE_NMT
363 // Alloc memory using the test memory type so that we can use that to see if
364 // NMT picks it up correctly
365 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
366 jlong addr = 0;
367 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
368 return addr;
369 WB_END
370
371 // Alloc memory with pseudo call stack. The test can create psudo malloc
372 // allocation site to stress the malloc tracking.
373 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
374 address pc = (address)(size_t)pseudo_stack;
375 NativeCallStack stack(&pc, 1);
376 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
377 WB_END
378
379 // Free the memory allocated by NMTAllocTest
380 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
381 os::free((void*)(uintptr_t)mem);
382 WB_END
383
384 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
385 jlong addr = 0;
386
387 addr = (jlong)(uintptr_t)os::reserve_memory(size);
388 MemTracker::record_virtual_memory_type((address)addr, mtTest);
389
390 return addr;
391 WB_END
392
393 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
394 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
395 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
396 WB_END
397
398 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
399 os::uncommit_memory((char *)(uintptr_t)addr, size);
400 WB_END
401
402 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
403 os::release_memory((char *)(uintptr_t)addr, size);
404 WB_END
405
406 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
407 // Test that we can downgrade NMT levels but not upgrade them.
408 if (MemTracker::tracking_level() == NMT_off) {
409 MemTracker::transition_to(NMT_off);
410 return MemTracker::tracking_level() == NMT_off;
411 } else {
412 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
413 MemTracker::transition_to(NMT_summary);
414 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
415
416 // Can't go to detail once NMT is set to summary.
417 MemTracker::transition_to(NMT_detail);
418 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
419
420 // Shutdown sets tracking level to minimal.
421 MemTracker::shutdown();
422 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
423
424 // Once the tracking level is minimal, we cannot increase to summary.
425 // The code ignores this request instead of asserting because if the malloc site
426 // table overflows in another thread, it tries to change the code to summary.
427 MemTracker::transition_to(NMT_summary);
428 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
429
430 // Really can never go up to detail, verify that the code would never do this.
431 MemTracker::transition_to(NMT_detail);
432 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
433 return MemTracker::tracking_level() == NMT_minimal;
434 }
435 WB_END
436
437 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
438 int hash_size = MallocSiteTable::hash_buckets();
439 assert(hash_size > 0, "NMT hash_size should be > 0");
440 return (jint)hash_size;
441 WB_END
442 #endif // INCLUDE_NMT
443
444 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
445 assert(method != NULL, "method should not be null");
446 ThreadToNativeFromVM ttn(thread);
447 return env->FromReflectedMethod(method);
448 }
449
450 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
451 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
452 private:
453 int _result;
454 const bool _make_not_entrant;
455 public:
456 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
457 _result(0), _make_not_entrant(make_not_entrant) { }
458 int result() const { return _result; }
459
460 void doit() {
461 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
462 if (t->has_last_Java_frame()) {
463 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
464 frame* f = fst.current();
465 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
466 RegisterMap* reg_map = fst.register_map();
467 Deoptimization::deoptimize(t, *f, reg_map);
468 if (_make_not_entrant) {
469 nmethod* nm = CodeCache::find_nmethod(f->pc());
470 assert(nm != NULL, "sanity check");
471 nm->make_not_entrant();
472 }
473 ++_result;
474 }
475 }
476 }
477 }
478 }
479 };
480
481 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
482 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
483 VMThread::execute(&op);
484 return op.result();
485 WB_END
486
487 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
488 MutexLockerEx mu(Compile_lock);
489 CodeCache::mark_all_nmethods_for_deoptimization();
490 VM_Deoptimize op;
491 VMThread::execute(&op);
492 WB_END
493
494 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
495 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
496 int result = 0;
497 CHECK_JNI_EXCEPTION_(env, result);
498 MutexLockerEx mu(Compile_lock);
499 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
500 if (is_osr) {
501 result += mh->mark_osr_nmethods();
502 } else if (mh->code() != NULL) {
503 mh->code()->mark_for_deoptimization();
504 ++result;
505 }
506 result += CodeCache::mark_for_deoptimization(mh());
507 if (result > 0) {
508 VM_Deoptimize op;
509 VMThread::execute(&op);
510 }
511 return result;
512 WB_END
513
514 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
515 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
516 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
517 MutexLockerEx mu(Compile_lock);
518 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
519 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
520 if (code == NULL) {
521 return JNI_FALSE;
522 }
523 return (code->is_alive() && !code->is_marked_for_deoptimization());
524 WB_END
525
526 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
527 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
528 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
529 MutexLockerEx mu(Compile_lock);
530 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
531 if (is_osr) {
532 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
533 } else {
534 return CompilationPolicy::can_be_compiled(mh, comp_level);
535 }
536 WB_END
537
538 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
539 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
540 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
541 MutexLockerEx mu(Compile_lock);
542 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
543 return mh->queued_for_compilation();
544 WB_END
545
546 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
547 if (compLevel < CompLevel_none || compLevel > CompLevel_highest_tier) {
548 return false; // Intrinsic is not available on a non-existent compilation level.
549 }
550 jmethodID method_id, compilation_context_id;
551 method_id = reflected_method_to_jmid(thread, env, method);
552 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
553 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
554 if (compilation_context != NULL) {
555 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
556 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
557 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
558 return CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, cch);
559 } else {
560 return CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, NULL);
561 }
562 WB_END
563
564 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
565 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
566 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
567 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
568 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
569 return (code != NULL ? code->comp_level() : CompLevel_none);
570 WB_END
571
572 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
573 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
574 CHECK_JNI_EXCEPTION(env);
575 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
576 if (is_osr) {
577 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
578 } else {
579 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
580 }
581 WB_END
582
583 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
584 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
585 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
586 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
587 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
588 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
589 WB_END
590
591 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
592 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
593 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
594 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
595 bool result = mh->dont_inline();
596 mh->set_dont_inline(value == JNI_TRUE);
597 return result;
598 WB_END
599
600 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
601 if (comp_level == CompLevel_any) {
602 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
603 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
604 } else {
605 return CompileBroker::queue_size(comp_level);
606 }
607 WB_END
608
609 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
610 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
611 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
612 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
613 bool result = mh->force_inline();
614 mh->set_force_inline(value == JNI_TRUE);
615 return result;
616 WB_END
617
618 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
619 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
620 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
621 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
622 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
623 MutexLockerEx mu(Compile_lock);
624 return (mh->queued_for_compilation() || nm != NULL);
625 WB_END
626
627
628 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
629 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
630 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
631
632 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
633
634 ResourceMark rm;
635 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
636
637 const char* error_msg = NULL;
638
639 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
640 if (m == NULL) {
641 assert(error_msg != NULL, "Must have error_msg");
642 tty->print_cr("Got error: %s", error_msg);
643 return -1;
644 }
645
646 // Pattern works - now check if it matches
647 int result = m->matches(mh);
648 delete m;
649 assert(result == 0 || result == 1, "Result out of range");
650 return result;
651 WB_END
652
653 class AlwaysFalseClosure : public BoolObjectClosure {
654 public:
655 bool do_object_b(oop p) { return false; }
656 };
657
658 static AlwaysFalseClosure always_false;
659
660 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
661 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
662 CHECK_JNI_EXCEPTION(env);
663 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
664 MutexLockerEx mu(Compile_lock);
665 MethodData* mdo = mh->method_data();
666 MethodCounters* mcs = mh->method_counters();
667
668 if (mdo != NULL) {
669 mdo->init();
670 ResourceMark rm;
671 int arg_count = mdo->method()->size_of_parameters();
672 for (int i = 0; i < arg_count; i++) {
673 mdo->set_arg_modified(i, 0);
674 }
675 MutexLockerEx mu(mdo->extra_data_lock());
676 mdo->clean_method_data(&always_false);
677 }
678
679 mh->clear_not_c1_compilable();
680 mh->clear_not_c2_compilable();
681 mh->clear_not_c2_osr_compilable();
682 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
683 if (mcs != NULL) {
684 mcs->backedge_counter()->init();
685 mcs->invocation_counter()->init();
686 mcs->set_interpreter_invocation_count(0);
687 mcs->set_interpreter_throwout_count(0);
688
689 #ifdef TIERED
690 mcs->set_rate(0.0F);
691 mh->set_prev_event_count(0);
692 mh->set_prev_time(0);
693 #endif
694 }
695 WB_END
696
697 template <typename T>
698 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
699 if (name == NULL) {
700 return false;
701 }
702 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
703 const char* flag_name = env->GetStringUTFChars(name, NULL);
704 Flag::Error result = (*TAt)(flag_name, value, true, true);
705 env->ReleaseStringUTFChars(name, flag_name);
706 return (result == Flag::SUCCESS);
707 }
708
709 template <typename T>
710 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
711 if (name == NULL) {
712 return false;
713 }
714 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
715 const char* flag_name = env->GetStringUTFChars(name, NULL);
716 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
717 env->ReleaseStringUTFChars(name, flag_name);
718 return (result == Flag::SUCCESS);
719 }
720
721 template <typename T>
722 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
723 ResourceMark rm(thread);
724 jclass clazz = env->FindClass(name->as_C_string());
725 CHECK_JNI_EXCEPTION_(env, NULL);
726 jmethodID methodID = env->GetStaticMethodID(clazz,
727 vmSymbols::valueOf_name()->as_C_string(),
728 sig->as_C_string());
729 CHECK_JNI_EXCEPTION_(env, NULL);
730 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
731 CHECK_JNI_EXCEPTION_(env, NULL);
732 return result;
733 }
734
735 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
736 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
737 }
738 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
739 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
740 }
741 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
742 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
743 }
744 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
745 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
746 }*/
747 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
748 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
749 }
750
751 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
752 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
753 const char* flag_name = env->GetStringUTFChars(name, NULL);
754 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
755 env->ReleaseStringUTFChars(name, flag_name);
756 return result;
757 }
758
759 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
760 Flag* flag = getVMFlag(thread, env, name);
761 return (flag != NULL) && flag->is_constant_in_binary();
762 WB_END
763
764 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
765 Flag* flag = getVMFlag(thread, env, name);
766 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
767 WB_END
768
769 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
770 bool result;
771 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
772 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
773 return booleanBox(thread, env, result);
774 }
775 return NULL;
776 WB_END
777
778 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
779 int result;
780 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
781 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
782 return longBox(thread, env, result);
783 }
784 return NULL;
785 WB_END
786
787 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
788 uint result;
789 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
790 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
791 return longBox(thread, env, result);
792 }
793 return NULL;
794 WB_END
795
796 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
797 intx result;
798 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
799 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
800 return longBox(thread, env, result);
801 }
802 return NULL;
803 WB_END
804
805 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
806 uintx result;
807 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
808 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
809 return longBox(thread, env, result);
810 }
811 return NULL;
812 WB_END
813
814 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
815 uint64_t result;
816 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
817 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
818 return longBox(thread, env, result);
819 }
820 return NULL;
821 WB_END
822
823 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
824 uintx result;
825 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
826 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
827 return longBox(thread, env, result);
828 }
829 return NULL;
830 WB_END
831
832 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
833 double result;
834 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
835 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
836 return doubleBox(thread, env, result);
837 }
838 return NULL;
839 WB_END
840
841 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
842 ccstr ccstrResult;
843 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
844 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
845 jstring result = env->NewStringUTF(ccstrResult);
846 CHECK_JNI_EXCEPTION_(env, NULL);
847 return result;
848 }
849 return NULL;
850 WB_END
851
852 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
853 bool result = value == JNI_TRUE ? true : false;
854 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
855 WB_END
856
857 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
858 int result = value;
859 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
860 WB_END
861
862 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
863 uint result = value;
864 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
865 WB_END
866
867 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
868 intx result = value;
869 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
870 WB_END
871
872 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
873 uintx result = value;
874 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
875 WB_END
876
877 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
878 uint64_t result = value;
879 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
880 WB_END
881
882 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
883 size_t result = value;
884 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
885 WB_END
886
887 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
888 double result = value;
889 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
890 WB_END
891
892 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
893 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
894 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
895 ccstr ccstrResult = ccstrValue;
896 bool needFree;
897 {
898 ThreadInVMfromNative ttvfn(thread); // back to VM
899 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
900 }
901 if (value != NULL) {
902 env->ReleaseStringUTFChars(value, ccstrValue);
903 }
904 if (needFree) {
905 FREE_C_HEAP_ARRAY(char, ccstrResult);
906 }
907 WB_END
908
909 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
910 WhiteBox::compilation_locked = true;
911 WB_END
912
913 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
914 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
915 WhiteBox::compilation_locked = false;
916 mo.notify_all();
917 WB_END
918
919 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
920 // Force a code cache sweep and block until it finished
921 NMethodSweeper::force_sweep();
922 WB_END
923
924 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
925 ResourceMark rm(THREAD);
926 int len;
927 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
928 return (StringTable::lookup(name, len) != NULL);
929 WB_END
930
931 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
932 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
933 Universe::heap()->collect(GCCause::_last_ditch_collection);
934 #if INCLUDE_ALL_GCS
935 if (UseG1GC) {
936 // Needs to be cleared explicitly for G1
937 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
938 }
939 #endif // INCLUDE_ALL_GCS
940 WB_END
941
942 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
943 Universe::heap()->collect(GCCause::_wb_young_gc);
944 WB_END
945
946 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
947 // static+volatile in order to force the read to happen
948 // (not be eliminated by the compiler)
949 static char c;
950 static volatile char* p;
951
952 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
953 if (p == NULL) {
954 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
955 }
956
957 c = *p;
958 WB_END
959
960 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
961 const char* cpu_features = VM_Version::cpu_features();
962 ThreadToNativeFromVM ttn(thread);
963 jstring features_string = env->NewStringUTF(cpu_features);
964
965 CHECK_JNI_EXCEPTION_(env, NULL);
966
967 return features_string;
968 WB_END
969
970 int WhiteBox::get_blob_type(const CodeBlob* code) {
971 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
972 return CodeCache::get_code_heap(code)->code_blob_type();
973 }
974
975 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
976 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
977 return CodeCache::get_code_heap(blob_type);
978 }
979
980 struct CodeBlobStub {
981 CodeBlobStub(const CodeBlob* blob) :
982 name(os::strdup(blob->name())),
983 size(blob->size()),
984 blob_type(WhiteBox::get_blob_type(blob)) { }
985 ~CodeBlobStub() { os::free((void*) name); }
986 const char* const name;
987 const int size;
988 const int blob_type;
989 };
990
991 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
992 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
993 CHECK_JNI_EXCEPTION_(env, NULL);
994 jobjectArray result = env->NewObjectArray(3, clazz, NULL);
995
996 jstring name = env->NewStringUTF(cb->name);
997 CHECK_JNI_EXCEPTION_(env, NULL);
998 env->SetObjectArrayElement(result, 0, name);
999
1000 jobject obj = integerBox(thread, env, cb->size);
1001 CHECK_JNI_EXCEPTION_(env, NULL);
1002 env->SetObjectArrayElement(result, 1, obj);
1003
1004 obj = integerBox(thread, env, cb->blob_type);
1005 CHECK_JNI_EXCEPTION_(env, NULL);
1006 env->SetObjectArrayElement(result, 2, obj);
1007
1008 return result;
1009 }
1010
1011 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1012 ResourceMark rm(THREAD);
1013 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1014 CHECK_JNI_EXCEPTION_(env, NULL);
1015 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1016 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1017 jobjectArray result = NULL;
1018 if (code == NULL) {
1019 return result;
1020 }
1021 int insts_size = code->insts_size();
1022
1023 ThreadToNativeFromVM ttn(thread);
1024 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1025 CHECK_JNI_EXCEPTION_(env, NULL);
1026 result = env->NewObjectArray(5, clazz, NULL);
1027 if (result == NULL) {
1028 return result;
1029 }
1030
1031 CodeBlobStub stub(code);
1032 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1033 env->SetObjectArrayElement(result, 0, codeBlob);
1034
1035 jobject level = integerBox(thread, env, code->comp_level());
1036 CHECK_JNI_EXCEPTION_(env, NULL);
1037 env->SetObjectArrayElement(result, 1, level);
1038
1039 jbyteArray insts = env->NewByteArray(insts_size);
1040 CHECK_JNI_EXCEPTION_(env, NULL);
1041 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1042 env->SetObjectArrayElement(result, 2, insts);
1043
1044 jobject id = integerBox(thread, env, code->compile_id());
1045 CHECK_JNI_EXCEPTION_(env, NULL);
1046 env->SetObjectArrayElement(result, 3, id);
1047
1048 jobject address = longBox(thread, env, (jlong) code);
1049 CHECK_JNI_EXCEPTION_(env, NULL);
1050 env->SetObjectArrayElement(result, 4, address);
1051
1052 return result;
1053 WB_END
1054
1055 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1056 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1057 BufferBlob* blob;
1058 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1059 if (full_size < size) {
1060 full_size += round_to(size - full_size, oopSize);
1061 }
1062 {
1063 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1064 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1065 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1066 }
1067 // Track memory usage statistic after releasing CodeCache_lock
1068 MemoryService::track_code_cache_memory_usage();
1069 return blob;
1070 }
1071
1072 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1073 if (size < 0) {
1074 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1075 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1076 }
1077 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1078 WB_END
1079
1080 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1081 if (addr == 0) {
1082 return;
1083 }
1084 BufferBlob::free((BufferBlob*) addr);
1085 WB_END
1086
1087 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1088 ResourceMark rm;
1089 GrowableArray<CodeBlobStub*> blobs;
1090 {
1091 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1092 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1093 if (heap == NULL) {
1094 return NULL;
1095 }
1096 for (CodeBlob* cb = (CodeBlob*) heap->first();
1097 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1098 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1099 new (stub) CodeBlobStub(cb);
1100 blobs.append(stub);
1101 }
1102 }
1103 if (blobs.length() == 0) {
1104 return NULL;
1105 }
1106 ThreadToNativeFromVM ttn(thread);
1107 jobjectArray result = NULL;
1108 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1109 CHECK_JNI_EXCEPTION_(env, NULL);
1110 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1111 if (result == NULL) {
1112 return result;
1113 }
1114 int i = 0;
1115 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1116 it != blobs.end(); ++it) {
1117 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1118 env->SetObjectArrayElement(result, i, obj);
1119 ++i;
1120 }
1121 return result;
1122 WB_END
1123
1124 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1125 return CompileBroker::get_compilation_activity_mode();
1126 WB_END
1127
1128 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1129 if (addr == 0) {
1130 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1131 "WB_GetCodeBlob: addr is null");
1132 }
1133 ThreadToNativeFromVM ttn(thread);
1134 CodeBlobStub stub((CodeBlob*) addr);
1135 return codeBlob2objectArray(thread, env, &stub);
1136 WB_END
1137
1138 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1139 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1140 CHECK_JNI_EXCEPTION_(env, 0);
1141 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1142 return (jlong) mh->method_data();
1143 WB_END
1144
1145 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1146 return (jlong) Thread::current()->stack_size();
1147 WB_END
1148
1149 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1150 JavaThread* t = JavaThread::current();
1151 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong) StackShadowPages * os::vm_page_size();
1152 WB_END
1153
1154
1155 int WhiteBox::array_bytes_to_length(size_t bytes) {
1156 return Array<u1>::bytes_to_length(bytes);
1157 }
1158
1159 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1160 if (size < 0) {
1161 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1162 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1163 }
1164
1165 oop class_loader_oop = JNIHandles::resolve(class_loader);
1166 ClassLoaderData* cld = class_loader_oop != NULL
1167 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1168 : ClassLoaderData::the_null_class_loader_data();
1169
1170 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1171
1172 return (jlong)(uintptr_t)metadata;
1173 WB_END
1174
1175 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1176 oop class_loader_oop = JNIHandles::resolve(class_loader);
1177 ClassLoaderData* cld = class_loader_oop != NULL
1178 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1179 : ClassLoaderData::the_null_class_loader_data();
1180
1181 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1182 WB_END
1183
1184 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1185 if (inc < 0) {
1186 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1187 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1188 }
1189
1190 jlong max_size_t = (jlong) ((size_t) -1);
1191 if (inc > max_size_t) {
1192 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1193 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1194 }
1195
1196 size_t new_cap_until_GC = 0;
1197 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1198 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1199 if (!success) {
1200 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1201 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1202 "due to contention with another thread");
1203 }
1204 return (jlong) new_cap_until_GC;
1205 WB_END
1206
1207 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1208 return (jlong) MetaspaceGC::capacity_until_GC();
1209 WB_END
1210
1211
1212
1213 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1214 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1215 Monitor::_safepoint_check_always :
1216 Monitor::_safepoint_check_never;
1217 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1218 attemptedNoSafepointValue == JNI_TRUE);
1219 WB_END
1220
1221 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1222 oop obj_oop = JNIHandles::resolve(obj);
1223 return (jboolean) obj_oop->mark()->has_monitor();
1224 WB_END
1225
1226 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1227 VM_ForceSafepoint force_safepoint_op;
1228 VMThread::execute(&force_safepoint_op);
1229 WB_END
1230
1231 WB_ENTRY(long, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1232 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1233 return (long) ikh->constants();
1234 WB_END
1235
1236 template <typename T>
1237 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1238 assert(value != NULL, "sanity");
1239 if (method == NULL || name == NULL) {
1240 return false;
1241 }
1242 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1243 CHECK_JNI_EXCEPTION_(env, false);
1244 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1245 // can't be in VM when we call JNI
1246 ThreadToNativeFromVM ttnfv(thread);
1247 const char* flag_name = env->GetStringUTFChars(name, NULL);
1248 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1249 env->ReleaseStringUTFChars(name, flag_name);
1250 return result;
1251 }
1252
1253 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1254 bool result;
1255 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1256 // can't be in VM when we call JNI
1257 ThreadToNativeFromVM ttnfv(thread);
1258 return booleanBox(thread, env, result);
1259 }
1260 return NULL;
1261 WB_END
1262
1263 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1264 intx result;
1265 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1266 // can't be in VM when we call JNI
1267 ThreadToNativeFromVM ttnfv(thread);
1268 return longBox(thread, env, result);
1269 }
1270 return NULL;
1271 WB_END
1272
1273 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1274 uintx result;
1275 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1276 // can't be in VM when we call JNI
1277 ThreadToNativeFromVM ttnfv(thread);
1278 return longBox(thread, env, result);
1279 }
1280 return NULL;
1281 WB_END
1282
1283 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1284 double result;
1285 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1286 // can't be in VM when we call JNI
1287 ThreadToNativeFromVM ttnfv(thread);
1288 return doubleBox(thread, env, result);
1289 }
1290 return NULL;
1291 WB_END
1292
1293 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1294 ccstr ccstrResult;
1295 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1296 // can't be in VM when we call JNI
1297 ThreadToNativeFromVM ttnfv(thread);
1298 jstring result = env->NewStringUTF(ccstrResult);
1299 CHECK_JNI_EXCEPTION_(env, NULL);
1300 return result;
1301 }
1302 return NULL;
1303 WB_END
1304
1305 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1306 oop obj_oop = JNIHandles::resolve(obj);
1307 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1308 WB_END
1309
1310 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1311 return StringTable::shared_string_ignored();
1312 WB_END
1313
1314 //Some convenience methods to deal with objects from java
1315 int WhiteBox::offset_for_field(const char* field_name, oop object,
1316 Symbol* signature_symbol) {
1317 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1318 Thread* THREAD = Thread::current();
1319
1320 //Get the class of our object
1321 Klass* arg_klass = object->klass();
1322 //Turn it into an instance-klass
1323 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1324
1325 //Create symbols to look for in the class
1326 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1327 THREAD);
1328
1329 //To be filled in with an offset of the field we're looking for
1330 fieldDescriptor fd;
1331
1332 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1333 if (res == NULL) {
1334 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1335 name_symbol->as_C_string());
1336 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
1337 }
1338
1339 //fetch the field at the offset we've found
1340 int dest_offset = fd.offset();
1341
1342 return dest_offset;
1343 }
1344
1345
1346 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1347 int offset = offset_for_field(field_name, object,
1348 vmSymbols::string_signature());
1349 oop string = object->obj_field(offset);
1350 if (string == NULL) {
1351 return NULL;
1352 }
1353 const char* ret = java_lang_String::as_utf8_string(string);
1354 return ret;
1355 }
1356
1357 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1358 int offset =
1359 offset_for_field(field_name, object, vmSymbols::bool_signature());
1360 bool ret = (object->bool_field(offset) == JNI_TRUE);
1361 return ret;
1362 }
1363
1364 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1365 ResourceMark rm;
1366 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1367
1368 // one by one registration natives for exception catching
1369 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1370 CHECK_JNI_EXCEPTION(env);
1371 for (int i = 0, n = method_count; i < n; ++i) {
1372 // Skip dummy entries
1373 if (method_array[i].fnPtr == NULL) continue;
1374 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1375 jthrowable throwable_obj = env->ExceptionOccurred();
1376 if (throwable_obj != NULL) {
1377 env->ExceptionClear();
1378 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1379 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1380 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1381 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1382 method_array[i].name, method_array[i].signature);
1383 }
1384 } else {
1385 // Registration failed unexpectedly.
1386 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1387 method_array[i].name, method_array[i].signature);
1388 env->UnregisterNatives(wbclass);
1389 break;
1390 }
1391 }
1392 }
1393 }
1394
1395 #define CC (char*)
1396
1397 static JNINativeMethod methods[] = {
1398 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1399 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1400 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1401 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1402 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1403 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1404 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1405 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1406 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1407 {CC"parseCommandLine0",
1408 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1409 (void*) &WB_ParseCommandLine
1410 },
1411 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1412 (void*)&WB_AddToBootstrapClassLoaderSearch},
1413 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1414 (void*)&WB_AddToSystemClassLoaderSearch},
1415 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1416 (void*)&WB_GetCompressedOopsMaxHeapSize},
1417 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1418 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1419 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1420 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1421 #if INCLUDE_ALL_GCS
1422 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1423 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1424 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1425 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1426 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1427 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1428 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1429 (void*)&WB_G1AuxiliaryMemoryUsage },
1430 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1431 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1432 #endif // INCLUDE_ALL_GCS
1433 #if INCLUDE_NMT
1434 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1435 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1436 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1437 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1438 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1439 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1440 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1441 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1442 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1443 #endif // INCLUDE_NMT
1444 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1445 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1446 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1447 (void*)&WB_DeoptimizeMethod },
1448 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1449 (void*)&WB_IsMethodCompiled },
1450 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1451 (void*)&WB_IsMethodCompilable},
1452 {CC"isMethodQueuedForCompilation0",
1453 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1454 {CC"isIntrinsicAvailable0",
1455 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1456 (void*)&WB_IsIntrinsicAvailable},
1457 {CC"makeMethodNotCompilable0",
1458 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1459 {CC"testSetDontInlineMethod0",
1460 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1461 {CC"getMethodCompilationLevel0",
1462 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1463 {CC"getMethodEntryBci0",
1464 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1465 {CC"getCompileQueueSize",
1466 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1467 {CC"testSetForceInlineMethod0",
1468 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1469 {CC"enqueueMethodForCompilation0",
1470 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1471 {CC"clearMethodState0",
1472 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1473 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1474 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1475 {CC"matchesMethod",
1476 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1477 (void*)&WB_MatchesMethod},
1478 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1479 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1480 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1481 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1482 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1483 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1484 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1485 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1486 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1487 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1488 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1489 (void*)&WB_SetStringVMFlag},
1490 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1491 (void*)&WB_GetBooleanVMFlag},
1492 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1493 (void*)&WB_GetIntVMFlag},
1494 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1495 (void*)&WB_GetUintVMFlag},
1496 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1497 (void*)&WB_GetIntxVMFlag},
1498 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1499 (void*)&WB_GetUintxVMFlag},
1500 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1501 (void*)&WB_GetUint64VMFlag},
1502 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1503 (void*)&WB_GetSizeTVMFlag},
1504 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1505 (void*)&WB_GetDoubleVMFlag},
1506 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1507 (void*)&WB_GetStringVMFlag},
1508 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1509 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1510 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1511 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1512 {CC"allocateMetaspace",
1513 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1514 {CC"freeMetaspace",
1515 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1516 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1517 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1518 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1519 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1520 (void*)&WB_GetNMethod },
1521 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1522 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1523 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1524 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1525 {CC"getCompilationActivityMode",
1526 CC"()I", (void*)&WB_GetCompilationActivityMode},
1527 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1528 (void*)&WB_GetMethodData },
1529 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1530 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1531 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1532 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1533 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1534 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1535 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
1536 {CC"getMethodBooleanOption",
1537 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1538 (void*)&WB_GetMethodBooleaneOption},
1539 {CC"getMethodIntxOption",
1540 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1541 (void*)&WB_GetMethodIntxOption},
1542 {CC"getMethodUintxOption",
1543 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1544 (void*)&WB_GetMethodUintxOption},
1545 {CC"getMethodDoubleOption",
1546 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1547 (void*)&WB_GetMethodDoubleOption},
1548 {CC"getMethodStringOption",
1549 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1550 (void*)&WB_GetMethodStringOption},
1551 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1552 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1553 };
1554
1555 #undef CC
1556
1557 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1558 {
1559 if (WhiteBoxAPI) {
1560 // Make sure that wbclass is loaded by the null classloader
1561 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1562 Handle loader(ikh->class_loader());
1563 if (loader.is_null()) {
1564 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1565 WhiteBox::register_extended(env, wbclass, thread);
1566 WhiteBox::set_used();
1567 }
1568 }
1569 }
1570 JVM_END