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 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
69
70 #define SIZE_T_MAX_VALUE ((size_t) -1)
71
72 bool WhiteBox::_used = false;
73 volatile bool WhiteBox::compilation_locked = false;
74
75 class VM_WhiteBoxOperation : public VM_Operation {
76 public:
77 VM_WhiteBoxOperation() { }
78 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
79 bool allow_nested_vm_operations() const { return true; }
80 };
81
82
83 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
84 return (jlong)(void*)JNIHandles::resolve(obj);
85 WB_END
86
87 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
88 return heapOopSize;
89 WB_END
90
91 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
92 return os::vm_page_size();
93 WB_END
94
95 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
96 return os::vm_allocation_granularity();
97 WB_END
98
99 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
100 return os::large_page_size();
101 WB_END
102
103 class WBIsKlassAliveClosure : public KlassClosure {
104 Symbol* _name;
105 bool _found;
106 public:
107 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
108
109 void do_klass(Klass* k) {
110 if (_found) return;
111 Symbol* ksym = k->name();
112 if (ksym->fast_compare(_name) == 0) {
113 _found = true;
114 }
115 }
116
117 bool found() const {
118 return _found;
119 }
120 };
121
122 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
123 Handle h_name = JNIHandles::resolve(name);
124 if (h_name.is_null()) return false;
125 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
126 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
127
128 WBIsKlassAliveClosure closure(sym);
129 ClassLoaderDataGraph::classes_do(&closure);
130
131 return closure.found();
132 WB_END
133
134 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
135 #if INCLUDE_JVMTI
136 ResourceMark rm;
137 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
138 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
139 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
140 assert(err == JVMTI_ERROR_NONE, "must not fail");
141 #endif
142 }
143 WB_END
144
145 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
146 #if INCLUDE_JVMTI
147 ResourceMark rm;
148 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
149 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
150 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
151 assert(err == JVMTI_ERROR_NONE, "must not fail");
152 #endif
153 }
154 WB_END
155
156
157 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
158 return (jlong)Arguments::max_heap_for_compressed_oops();
159 }
160 WB_END
161
162 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
163 CollectorPolicy * p = Universe::heap()->collector_policy();
164 gclog_or_tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
165 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
166 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
167 p->space_alignment(), p->heap_alignment());
168 }
169 WB_END
170
171 #ifndef PRODUCT
172 // Forward declaration
173 void TestReservedSpace_test();
174 void TestReserveMemorySpecial_test();
175 void TestVirtualSpace_test();
176 void TestMetaspaceAux_test();
177 #endif
178
179 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
180 #ifndef PRODUCT
181 TestReservedSpace_test();
182 TestReserveMemorySpecial_test();
183 TestVirtualSpace_test();
184 TestMetaspaceAux_test();
185 #endif
186 WB_END
187
188 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
189 size_t granularity = os::vm_allocation_granularity();
190 ReservedHeapSpace rhs(100 * granularity, granularity, false);
191 VirtualSpace vs;
192 vs.initialize(rhs, 50 * granularity);
193
194 // Check if constraints are complied
195 if (!( UseCompressedOops && rhs.base() != NULL &&
196 Universe::narrow_oop_base() != NULL &&
197 Universe::narrow_oop_use_implicit_null_checks() )) {
198 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
199 "\tUseCompressedOops is %d\n"
200 "\trhs.base() is " PTR_FORMAT "\n"
201 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
202 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
203 UseCompressedOops,
204 rhs.base(),
205 Universe::narrow_oop_base(),
206 Universe::narrow_oop_use_implicit_null_checks());
207 return;
208 }
209 tty->print_cr("Reading from no access area... ");
210 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
211 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
212 WB_END
213
214 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
215 size_t magnitude, size_t iterations) {
216 size_t granularity = os::vm_allocation_granularity();
217 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
218 VirtualSpace vs;
219 if (!vs.initialize(rhs, 0)) {
220 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
221 return 3;
222 }
223
224 long seed = os::random();
225 tty->print_cr("Random seed is %ld", seed);
226 os::init_random(seed);
227
228 for (size_t i = 0; i < iterations; i++) {
229
230 // Whether we will shrink or grow
231 bool shrink = os::random() % 2L == 0;
232
233 // Get random delta to resize virtual space
234 size_t delta = (size_t)os::random() % magnitude;
235
236 // If we are about to shrink virtual space below zero, then expand instead
237 if (shrink && vs.committed_size() < delta) {
238 shrink = false;
239 }
240
241 // Resizing by delta
242 if (shrink) {
243 vs.shrink_by(delta);
244 } else {
245 // If expanding fails expand_by will silently return false
246 vs.expand_by(delta, true);
247 }
248 }
249 return 0;
250 }
251
252 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
253 jlong reserved_space_size, jlong magnitude, jlong iterations))
254 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
255 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
256 iterations);
257 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
258 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
259 return 1;
260 }
261
262 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
263 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
264 if (sizeof(size_t) < sizeof(jlong)) {
265 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
266 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
267 || iterations > size_t_max_value) {
268 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
269 return 2;
270 }
271 }
272
273 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
274 (size_t) magnitude, (size_t) iterations);
275 WB_END
276
277 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
278 oop p = JNIHandles::resolve(obj);
279 #if INCLUDE_ALL_GCS
280 if (UseG1GC) {
281 G1CollectedHeap* g1 = G1CollectedHeap::heap();
282 const HeapRegion* hr = g1->heap_region_containing(p);
283 if (hr == NULL) {
284 return false;
285 }
286 return !(hr->is_young());
287 } else if (UseParallelGC) {
288 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
289 return !psh->is_in_young(p);
290 }
291 #endif // INCLUDE_ALL_GCS
292 GenCollectedHeap* gch = GenCollectedHeap::heap();
293 return !gch->is_in_young(p);
294 WB_END
295
296 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
297 oop p = JNIHandles::resolve(obj);
298 return p->size() * HeapWordSize;
299 WB_END
300
301 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
302 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
303 return (jlong)alignment;
304 WB_END
305
306 #if INCLUDE_ALL_GCS
307 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
308 G1CollectedHeap* g1 = G1CollectedHeap::heap();
309 oop result = JNIHandles::resolve(obj);
310 const HeapRegion* hr = g1->heap_region_containing(result);
311 return hr->is_humongous();
312 WB_END
313
314 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
315 G1CollectedHeap* g1 = G1CollectedHeap::heap();
316 size_t nr = g1->max_regions();
317 return (jlong)nr;
318 WB_END
319
320 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
321 G1CollectedHeap* g1 = G1CollectedHeap::heap();
322 size_t nr = g1->num_free_regions();
323 return (jlong)nr;
324 WB_END
325
326 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
327 G1CollectedHeap* g1 = G1CollectedHeap::heap();
328 return g1->concurrent_mark()->cmThread()->during_cycle();
329 WB_END
330
331 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
332 G1CollectedHeap* g1h = G1CollectedHeap::heap();
333 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
334 g1h->collect(GCCause::_wb_conc_mark);
335 return true;
336 }
337 return false;
338 WB_END
339
340 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
341 return (jint)HeapRegion::GrainBytes;
342 WB_END
343
344 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
345 ParallelScavengeHeap* ps = ParallelScavengeHeap::heap();
346 size_t alignment = ps->gens()->virtual_spaces()->alignment();
347 return (jlong)alignment;
348 WB_END
349
350 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
351 size_t alignment = ParallelScavengeHeap::heap()->generation_alignment();
352 return (jlong)alignment;
353 WB_END
354
355 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
356 ResourceMark rm(THREAD);
357 G1CollectedHeap* g1h = G1CollectedHeap::heap();
358 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
359 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
360 return JNIHandles::make_local(env, h());
361 WB_END
362 #endif // INCLUDE_ALL_GCS
363
364 #if INCLUDE_NMT
365 // Alloc memory using the test memory type so that we can use that to see if
366 // NMT picks it up correctly
367 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
368 jlong addr = 0;
369 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
370 return addr;
371 WB_END
372
373 // Alloc memory with pseudo call stack. The test can create psudo malloc
374 // allocation site to stress the malloc tracking.
375 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
376 address pc = (address)(size_t)pseudo_stack;
377 NativeCallStack stack(&pc, 1);
378 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
379 WB_END
380
381 // Free the memory allocated by NMTAllocTest
382 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
383 os::free((void*)(uintptr_t)mem);
384 WB_END
385
386 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
387 jlong addr = 0;
388
389 addr = (jlong)(uintptr_t)os::reserve_memory(size);
390 MemTracker::record_virtual_memory_type((address)addr, mtTest);
391
392 return addr;
393 WB_END
394
395 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
396 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
397 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
398 WB_END
399
400 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
401 os::uncommit_memory((char *)(uintptr_t)addr, size);
402 WB_END
403
404 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
405 os::release_memory((char *)(uintptr_t)addr, size);
406 WB_END
407
408 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
409 // Test that we can downgrade NMT levels but not upgrade them.
410 if (MemTracker::tracking_level() == NMT_off) {
411 MemTracker::transition_to(NMT_off);
412 return MemTracker::tracking_level() == NMT_off;
413 } else {
414 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
415 MemTracker::transition_to(NMT_summary);
416 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
417
418 // Can't go to detail once NMT is set to summary.
419 MemTracker::transition_to(NMT_detail);
420 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
421
422 // Shutdown sets tracking level to minimal.
423 MemTracker::shutdown();
424 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
425
426 // Once the tracking level is minimal, we cannot increase to summary.
427 // The code ignores this request instead of asserting because if the malloc site
428 // table overflows in another thread, it tries to change the code to summary.
429 MemTracker::transition_to(NMT_summary);
430 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
431
432 // Really can never go up to detail, verify that the code would never do this.
433 MemTracker::transition_to(NMT_detail);
434 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
435 return MemTracker::tracking_level() == NMT_minimal;
436 }
437 WB_END
438
439 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
440 int hash_size = MallocSiteTable::hash_buckets();
441 assert(hash_size > 0, "NMT hash_size should be > 0");
442 return (jint)hash_size;
443 WB_END
444 #endif // INCLUDE_NMT
445
446 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
447 assert(method != NULL, "method should not be null");
448 ThreadToNativeFromVM ttn(thread);
449 return env->FromReflectedMethod(method);
450 }
451
452 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
453 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
454 private:
455 int _result;
456 const bool _make_not_entrant;
457 public:
458 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
459 _result(0), _make_not_entrant(make_not_entrant) { }
460 int result() const { return _result; }
461
462 void doit() {
463 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
464 if (t->has_last_Java_frame()) {
465 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
466 frame* f = fst.current();
467 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
468 RegisterMap* reg_map = fst.register_map();
469 Deoptimization::deoptimize(t, *f, reg_map);
470 if (_make_not_entrant) {
471 nmethod* nm = CodeCache::find_nmethod(f->pc());
472 assert(nm != NULL, "sanity check");
473 nm->make_not_entrant();
474 }
475 ++_result;
476 }
477 }
478 }
479 }
480 }
481 };
482
483 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
484 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
485 VMThread::execute(&op);
486 return op.result();
487 WB_END
488
489 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
490 MutexLockerEx mu(Compile_lock);
491 CodeCache::mark_all_nmethods_for_deoptimization();
492 VM_Deoptimize op;
493 VMThread::execute(&op);
494 WB_END
495
496 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
497 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
498 int result = 0;
499 CHECK_JNI_EXCEPTION_(env, result);
500 MutexLockerEx mu(Compile_lock);
501 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
502 if (is_osr) {
503 result += mh->mark_osr_nmethods();
504 } else if (mh->code() != NULL) {
505 mh->code()->mark_for_deoptimization();
506 ++result;
507 }
508 result += CodeCache::mark_for_deoptimization(mh());
509 if (result > 0) {
510 VM_Deoptimize op;
511 VMThread::execute(&op);
512 }
513 return result;
514 WB_END
515
516 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
517 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
518 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
519 MutexLockerEx mu(Compile_lock);
520 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
521 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
522 if (code == NULL) {
523 return JNI_FALSE;
524 }
525 return (code->is_alive() && !code->is_marked_for_deoptimization());
526 WB_END
527
528 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
529 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
530 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
531 MutexLockerEx mu(Compile_lock);
532 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
533 if (is_osr) {
534 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
535 } else {
536 return CompilationPolicy::can_be_compiled(mh, comp_level);
537 }
538 WB_END
539
540 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
541 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
542 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
543 MutexLockerEx mu(Compile_lock);
544 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
545 return mh->queued_for_compilation();
546 WB_END
547
548 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
549 if (compLevel < CompLevel_none || compLevel > CompLevel_highest_tier) {
550 return false; // Intrinsic is not available on a non-existent compilation level.
551 }
552 jmethodID method_id, compilation_context_id;
553 method_id = reflected_method_to_jmid(thread, env, method);
554 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
555 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
556 if (compilation_context != NULL) {
557 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
558 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
559 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
560 return CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, cch);
561 } else {
562 return CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, NULL);
563 }
564 WB_END
565
566 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
567 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
568 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
569 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
570 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
571 return (code != NULL ? code->comp_level() : CompLevel_none);
572 WB_END
573
574 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
575 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
576 CHECK_JNI_EXCEPTION(env);
577 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
578 if (is_osr) {
579 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
580 } else {
581 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
582 }
583 WB_END
584
585 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
586 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
587 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
588 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
589 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
590 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
591 WB_END
592
593 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(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->dont_inline();
598 mh->set_dont_inline(value == JNI_TRUE);
599 return result;
600 WB_END
601
602 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
603 if (comp_level == CompLevel_any) {
604 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
605 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
606 } else {
607 return CompileBroker::queue_size(comp_level);
608 }
609 WB_END
610
611 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
612 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
613 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
614 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
615 bool result = mh->force_inline();
616 mh->set_force_inline(value == JNI_TRUE);
617 return result;
618 WB_END
619
620 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
621 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
622 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
623 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
624 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
625 MutexLockerEx mu(Compile_lock);
626 return (mh->queued_for_compilation() || nm != NULL);
627 WB_END
628
629
630 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
631 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
632 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
633
634 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
635
636 ResourceMark rm;
637 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
638
639 const char* error_msg = NULL;
640
641 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
642 if (m == NULL) {
643 assert(error_msg != NULL, "Must have error_msg");
644 tty->print_cr("Got error: %s", error_msg);
645 return -1;
646 }
647
648 // Pattern works - now check if it matches
649 int result = m->matches(mh);
650 delete m;
651 assert(result == 0 || result == 1, "Result out of range");
652 return result;
653 WB_END
654
655 class AlwaysFalseClosure : public BoolObjectClosure {
656 public:
657 bool do_object_b(oop p) { return false; }
658 };
659
660 static AlwaysFalseClosure always_false;
661
662 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
663 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
664 CHECK_JNI_EXCEPTION(env);
665 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
666 MutexLockerEx mu(Compile_lock);
667 MethodData* mdo = mh->method_data();
668 MethodCounters* mcs = mh->method_counters();
669
670 if (mdo != NULL) {
671 mdo->init();
672 ResourceMark rm;
673 int arg_count = mdo->method()->size_of_parameters();
674 for (int i = 0; i < arg_count; i++) {
675 mdo->set_arg_modified(i, 0);
676 }
677 MutexLockerEx mu(mdo->extra_data_lock());
678 mdo->clean_method_data(&always_false);
679 }
680
681 mh->clear_not_c1_compilable();
682 mh->clear_not_c2_compilable();
683 mh->clear_not_c2_osr_compilable();
684 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
685 if (mcs != NULL) {
686 mcs->backedge_counter()->init();
687 mcs->invocation_counter()->init();
688 mcs->set_interpreter_invocation_count(0);
689 mcs->set_interpreter_throwout_count(0);
690
691 #ifdef TIERED
692 mcs->set_rate(0.0F);
693 mh->set_prev_event_count(0);
694 mh->set_prev_time(0);
695 #endif
696 }
697 WB_END
698
699 template <typename T>
700 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
701 if (name == NULL) {
702 return false;
703 }
704 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
705 const char* flag_name = env->GetStringUTFChars(name, NULL);
706 Flag::Error result = (*TAt)(flag_name, value, true, true);
707 env->ReleaseStringUTFChars(name, flag_name);
708 return (result == Flag::SUCCESS);
709 }
710
711 template <typename T>
712 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
713 if (name == NULL) {
714 return false;
715 }
716 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
717 const char* flag_name = env->GetStringUTFChars(name, NULL);
718 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
719 env->ReleaseStringUTFChars(name, flag_name);
720 return (result == Flag::SUCCESS);
721 }
722
723 template <typename T>
724 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
725 ResourceMark rm(thread);
726 jclass clazz = env->FindClass(name->as_C_string());
727 CHECK_JNI_EXCEPTION_(env, NULL);
728 jmethodID methodID = env->GetStaticMethodID(clazz,
729 vmSymbols::valueOf_name()->as_C_string(),
730 sig->as_C_string());
731 CHECK_JNI_EXCEPTION_(env, NULL);
732 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
733 CHECK_JNI_EXCEPTION_(env, NULL);
734 return result;
735 }
736
737 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
738 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
739 }
740 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
741 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
742 }
743 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
744 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
745 }
746 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
747 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
748 }*/
749 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
750 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
751 }
752
753 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
754 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
755 const char* flag_name = env->GetStringUTFChars(name, NULL);
756 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
757 env->ReleaseStringUTFChars(name, flag_name);
758 return result;
759 }
760
761 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
762 Flag* flag = getVMFlag(thread, env, name);
763 return (flag != NULL) && flag->is_constant_in_binary();
764 WB_END
765
766 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
767 Flag* flag = getVMFlag(thread, env, name);
768 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
769 WB_END
770
771 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
772 bool result;
773 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
774 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
775 return booleanBox(thread, env, result);
776 }
777 return NULL;
778 WB_END
779
780 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
781 int result;
782 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
783 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
784 return longBox(thread, env, result);
785 }
786 return NULL;
787 WB_END
788
789 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
790 uint result;
791 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
792 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
793 return longBox(thread, env, result);
794 }
795 return NULL;
796 WB_END
797
798 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
799 intx result;
800 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
801 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
802 return longBox(thread, env, result);
803 }
804 return NULL;
805 WB_END
806
807 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
808 uintx result;
809 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
810 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
811 return longBox(thread, env, result);
812 }
813 return NULL;
814 WB_END
815
816 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
817 uint64_t result;
818 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
819 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
820 return longBox(thread, env, result);
821 }
822 return NULL;
823 WB_END
824
825 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
826 uintx result;
827 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
828 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
829 return longBox(thread, env, result);
830 }
831 return NULL;
832 WB_END
833
834 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
835 double result;
836 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
837 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
838 return doubleBox(thread, env, result);
839 }
840 return NULL;
841 WB_END
842
843 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
844 ccstr ccstrResult;
845 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
846 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
847 jstring result = env->NewStringUTF(ccstrResult);
848 CHECK_JNI_EXCEPTION_(env, NULL);
849 return result;
850 }
851 return NULL;
852 WB_END
853
854 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
855 bool result = value == JNI_TRUE ? true : false;
856 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
857 WB_END
858
859 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
860 int result = value;
861 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
862 WB_END
863
864 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
865 uint result = value;
866 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
867 WB_END
868
869 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
870 intx result = value;
871 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
872 WB_END
873
874 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
875 uintx result = value;
876 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
877 WB_END
878
879 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
880 uint64_t result = value;
881 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
882 WB_END
883
884 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
885 size_t result = value;
886 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
887 WB_END
888
889 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
890 double result = value;
891 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
892 WB_END
893
894 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
895 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
896 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
897 ccstr ccstrResult = ccstrValue;
898 bool needFree;
899 {
900 ThreadInVMfromNative ttvfn(thread); // back to VM
901 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
902 }
903 if (value != NULL) {
904 env->ReleaseStringUTFChars(value, ccstrValue);
905 }
906 if (needFree) {
907 FREE_C_HEAP_ARRAY(char, ccstrResult);
908 }
909 WB_END
910
911 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
912 WhiteBox::compilation_locked = true;
913 WB_END
914
915 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
916 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
917 WhiteBox::compilation_locked = false;
918 mo.notify_all();
919 WB_END
920
921 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
922 // Force a code cache sweep and block until it finished
923 NMethodSweeper::force_sweep();
924 WB_END
925
926 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
927 ResourceMark rm(THREAD);
928 int len;
929 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
930 return (StringTable::lookup(name, len) != NULL);
931 WB_END
932
933 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
934 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
935 Universe::heap()->collect(GCCause::_last_ditch_collection);
936 #if INCLUDE_ALL_GCS
937 if (UseG1GC) {
938 // Needs to be cleared explicitly for G1
939 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
940 }
941 #endif // INCLUDE_ALL_GCS
942 WB_END
943
944 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
945 Universe::heap()->collect(GCCause::_wb_young_gc);
946 WB_END
947
948 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
949 // static+volatile in order to force the read to happen
950 // (not be eliminated by the compiler)
951 static char c;
952 static volatile char* p;
953
954 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
955 if (p == NULL) {
956 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
957 }
958
959 c = *p;
960 WB_END
961
962 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
963 const char* cpu_features = VM_Version::cpu_features();
964 ThreadToNativeFromVM ttn(thread);
965 jstring features_string = env->NewStringUTF(cpu_features);
966
967 CHECK_JNI_EXCEPTION_(env, NULL);
968
969 return features_string;
970 WB_END
971
972 int WhiteBox::get_blob_type(const CodeBlob* code) {
973 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
974 return CodeCache::get_code_heap(code)->code_blob_type();
975 }
976
977 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
978 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
979 return CodeCache::get_code_heap(blob_type);
980 }
981
982 struct CodeBlobStub {
983 CodeBlobStub(const CodeBlob* blob) :
984 name(os::strdup(blob->name())),
985 size(blob->size()),
986 blob_type(WhiteBox::get_blob_type(blob)) { }
987 ~CodeBlobStub() { os::free((void*) name); }
988 const char* const name;
989 const int size;
990 const int blob_type;
991 };
992
993 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
994 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
995 CHECK_JNI_EXCEPTION_(env, NULL);
996 jobjectArray result = env->NewObjectArray(3, clazz, NULL);
997
998 jstring name = env->NewStringUTF(cb->name);
999 CHECK_JNI_EXCEPTION_(env, NULL);
1000 env->SetObjectArrayElement(result, 0, name);
1001
1002 jobject obj = integerBox(thread, env, cb->size);
1003 CHECK_JNI_EXCEPTION_(env, NULL);
1004 env->SetObjectArrayElement(result, 1, obj);
1005
1006 obj = integerBox(thread, env, cb->blob_type);
1007 CHECK_JNI_EXCEPTION_(env, NULL);
1008 env->SetObjectArrayElement(result, 2, obj);
1009
1010 return result;
1011 }
1012
1013 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1014 ResourceMark rm(THREAD);
1015 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1016 CHECK_JNI_EXCEPTION_(env, NULL);
1017 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1018 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1019 jobjectArray result = NULL;
1020 if (code == NULL) {
1021 return result;
1022 }
1023 int insts_size = code->insts_size();
1024
1025 ThreadToNativeFromVM ttn(thread);
1026 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1027 CHECK_JNI_EXCEPTION_(env, NULL);
1028 result = env->NewObjectArray(4, clazz, NULL);
1029 if (result == NULL) {
1030 return result;
1031 }
1032
1033 CodeBlobStub stub(code);
1034 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1035 env->SetObjectArrayElement(result, 0, codeBlob);
1036
1037 jobject level = integerBox(thread, env, code->comp_level());
1038 CHECK_JNI_EXCEPTION_(env, NULL);
1039 env->SetObjectArrayElement(result, 1, level);
1040
1041 jbyteArray insts = env->NewByteArray(insts_size);
1042 CHECK_JNI_EXCEPTION_(env, NULL);
1043 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1044 env->SetObjectArrayElement(result, 2, insts);
1045
1046 jobject id = integerBox(thread, env, code->compile_id());
1047 CHECK_JNI_EXCEPTION_(env, NULL);
1048 env->SetObjectArrayElement(result, 3, id);
1049
1050 return result;
1051 WB_END
1052
1053 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1054 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1055 BufferBlob* blob;
1056 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1057 if (full_size < size) {
1058 full_size += round_to(size - full_size, oopSize);
1059 }
1060 {
1061 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1062 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1063 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1064 }
1065 // Track memory usage statistic after releasing CodeCache_lock
1066 MemoryService::track_code_cache_memory_usage();
1067 return blob;
1068 }
1069
1070 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1071 if (size < 0) {
1072 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1073 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1074 }
1075 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1076 WB_END
1077
1078 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1079 if (addr == 0) {
1080 return;
1081 }
1082 BufferBlob::free((BufferBlob*) addr);
1083 WB_END
1084
1085 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1086 ResourceMark rm;
1087 GrowableArray<CodeBlobStub*> blobs;
1088 {
1089 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1090 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1091 if (heap == NULL) {
1092 return NULL;
1093 }
1094 for (CodeBlob* cb = (CodeBlob*) heap->first();
1095 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1096 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1097 new (stub) CodeBlobStub(cb);
1098 blobs.append(stub);
1099 }
1100 }
1101 if (blobs.length() == 0) {
1102 return NULL;
1103 }
1104 ThreadToNativeFromVM ttn(thread);
1105 jobjectArray result = NULL;
1106 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1107 CHECK_JNI_EXCEPTION_(env, NULL);
1108 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1109 if (result == NULL) {
1110 return result;
1111 }
1112 int i = 0;
1113 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1114 it != blobs.end(); ++it) {
1115 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1116 env->SetObjectArrayElement(result, i, obj);
1117 ++i;
1118 }
1119 return result;
1120 WB_END
1121
1122 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1123 return CompileBroker::get_compilation_activity_mode();
1124 WB_END
1125
1126 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1127 if (addr == 0) {
1128 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1129 "WB_GetCodeBlob: addr is null");
1130 }
1131 ThreadToNativeFromVM ttn(thread);
1132 CodeBlobStub stub((CodeBlob*) addr);
1133 return codeBlob2objectArray(thread, env, &stub);
1134 WB_END
1135
1136 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1137 return (jlong) Thread::current()->stack_size();
1138 WB_END
1139
1140 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1141 JavaThread* t = JavaThread::current();
1142 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong) StackShadowPages * os::vm_page_size();
1143 WB_END
1144
1145 int WhiteBox::array_bytes_to_length(size_t bytes) {
1146 return Array<u1>::bytes_to_length(bytes);
1147 }
1148
1149 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1150 if (size < 0) {
1151 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1152 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1153 }
1154
1155 oop class_loader_oop = JNIHandles::resolve(class_loader);
1156 ClassLoaderData* cld = class_loader_oop != NULL
1157 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1158 : ClassLoaderData::the_null_class_loader_data();
1159
1160 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1161
1162 return (jlong)(uintptr_t)metadata;
1163 WB_END
1164
1165 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1166 oop class_loader_oop = JNIHandles::resolve(class_loader);
1167 ClassLoaderData* cld = class_loader_oop != NULL
1168 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1169 : ClassLoaderData::the_null_class_loader_data();
1170
1171 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1172 WB_END
1173
1174 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1175 if (inc < 0) {
1176 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1177 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1178 }
1179
1180 jlong max_size_t = (jlong) ((size_t) -1);
1181 if (inc > max_size_t) {
1182 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1183 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1184 }
1185
1186 size_t new_cap_until_GC = 0;
1187 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1188 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1189 if (!success) {
1190 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1191 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1192 "due to contention with another thread");
1193 }
1194 return (jlong) new_cap_until_GC;
1195 WB_END
1196
1197 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1198 return (jlong) MetaspaceGC::capacity_until_GC();
1199 WB_END
1200
1201
1202
1203 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1204 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1205 Monitor::_safepoint_check_always :
1206 Monitor::_safepoint_check_never;
1207 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1208 attemptedNoSafepointValue == JNI_TRUE);
1209 WB_END
1210
1211 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1212 oop obj_oop = JNIHandles::resolve(obj);
1213 return (jboolean) obj_oop->mark()->has_monitor();
1214 WB_END
1215
1216 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1217 VM_ForceSafepoint force_safepoint_op;
1218 VMThread::execute(&force_safepoint_op);
1219 WB_END
1220
1221 template <typename T>
1222 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1223 assert(value != NULL, "sanity");
1224 if (method == NULL || name == NULL) {
1225 return false;
1226 }
1227 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1228 CHECK_JNI_EXCEPTION_(env, false);
1229 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1230 // can't be in VM when we call JNI
1231 ThreadToNativeFromVM ttnfv(thread);
1232 const char* flag_name = env->GetStringUTFChars(name, NULL);
1233 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1234 env->ReleaseStringUTFChars(name, flag_name);
1235 return result;
1236 }
1237
1238 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1239 bool result;
1240 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1241 // can't be in VM when we call JNI
1242 ThreadToNativeFromVM ttnfv(thread);
1243 return booleanBox(thread, env, result);
1244 }
1245 return NULL;
1246 WB_END
1247
1248 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1249 intx result;
1250 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1251 // can't be in VM when we call JNI
1252 ThreadToNativeFromVM ttnfv(thread);
1253 return longBox(thread, env, result);
1254 }
1255 return NULL;
1256 WB_END
1257
1258 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1259 uintx result;
1260 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1261 // can't be in VM when we call JNI
1262 ThreadToNativeFromVM ttnfv(thread);
1263 return longBox(thread, env, result);
1264 }
1265 return NULL;
1266 WB_END
1267
1268 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1269 double result;
1270 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1271 // can't be in VM when we call JNI
1272 ThreadToNativeFromVM ttnfv(thread);
1273 return doubleBox(thread, env, result);
1274 }
1275 return NULL;
1276 WB_END
1277
1278 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1279 ccstr ccstrResult;
1280 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1281 // can't be in VM when we call JNI
1282 ThreadToNativeFromVM ttnfv(thread);
1283 jstring result = env->NewStringUTF(ccstrResult);
1284 CHECK_JNI_EXCEPTION_(env, NULL);
1285 return result;
1286 }
1287 return NULL;
1288 WB_END
1289
1290 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1291 oop obj_oop = JNIHandles::resolve(obj);
1292 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1293 WB_END
1294
1295 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1296 return StringTable::shared_string_ignored();
1297 WB_END
1298
1299 //Some convenience methods to deal with objects from java
1300 int WhiteBox::offset_for_field(const char* field_name, oop object,
1301 Symbol* signature_symbol) {
1302 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1303 Thread* THREAD = Thread::current();
1304
1305 //Get the class of our object
1306 Klass* arg_klass = object->klass();
1307 //Turn it into an instance-klass
1308 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1309
1310 //Create symbols to look for in the class
1311 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1312 THREAD);
1313
1314 //To be filled in with an offset of the field we're looking for
1315 fieldDescriptor fd;
1316
1317 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1318 if (res == NULL) {
1319 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1320 name_symbol->as_C_string());
1321 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
1322 }
1323
1324 //fetch the field at the offset we've found
1325 int dest_offset = fd.offset();
1326
1327 return dest_offset;
1328 }
1329
1330
1331 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1332 int offset = offset_for_field(field_name, object,
1333 vmSymbols::string_signature());
1334 oop string = object->obj_field(offset);
1335 if (string == NULL) {
1336 return NULL;
1337 }
1338 const char* ret = java_lang_String::as_utf8_string(string);
1339 return ret;
1340 }
1341
1342 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1343 int offset =
1344 offset_for_field(field_name, object, vmSymbols::bool_signature());
1345 bool ret = (object->bool_field(offset) == JNI_TRUE);
1346 return ret;
1347 }
1348
1349 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1350 ResourceMark rm;
1351 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1352
1353 // one by one registration natives for exception catching
1354 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1355 CHECK_JNI_EXCEPTION(env);
1356 for (int i = 0, n = method_count; i < n; ++i) {
1357 // Skip dummy entries
1358 if (method_array[i].fnPtr == NULL) continue;
1359 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1360 jthrowable throwable_obj = env->ExceptionOccurred();
1361 if (throwable_obj != NULL) {
1362 env->ExceptionClear();
1363 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1364 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1365 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1366 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1367 method_array[i].name, method_array[i].signature);
1368 }
1369 } else {
1370 // Registration failed unexpectedly.
1371 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1372 method_array[i].name, method_array[i].signature);
1373 env->UnregisterNatives(wbclass);
1374 break;
1375 }
1376 }
1377 }
1378 }
1379
1380 #define CC (char*)
1381
1382 static JNINativeMethod methods[] = {
1383 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1384 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1385 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1386 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1387 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1388 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1389 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1390 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1391 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1392 {CC"parseCommandLine0",
1393 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1394 (void*) &WB_ParseCommandLine
1395 },
1396 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1397 (void*)&WB_AddToBootstrapClassLoaderSearch},
1398 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1399 (void*)&WB_AddToSystemClassLoaderSearch},
1400 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1401 (void*)&WB_GetCompressedOopsMaxHeapSize},
1402 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1403 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1404 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1405 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1406 #if INCLUDE_ALL_GCS
1407 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1408 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1409 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1410 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1411 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1412 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1413 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1414 (void*)&WB_G1AuxiliaryMemoryUsage },
1415 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1416 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1417 #endif // INCLUDE_ALL_GCS
1418 #if INCLUDE_NMT
1419 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1420 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1421 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1422 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1423 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1424 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1425 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1426 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1427 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1428 #endif // INCLUDE_NMT
1429 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1430 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1431 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1432 (void*)&WB_DeoptimizeMethod },
1433 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1434 (void*)&WB_IsMethodCompiled },
1435 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1436 (void*)&WB_IsMethodCompilable},
1437 {CC"isMethodQueuedForCompilation0",
1438 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1439 {CC"isIntrinsicAvailable0",
1440 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1441 (void*)&WB_IsIntrinsicAvailable},
1442 {CC"makeMethodNotCompilable0",
1443 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1444 {CC"testSetDontInlineMethod0",
1445 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1446 {CC"getMethodCompilationLevel0",
1447 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1448 {CC"getMethodEntryBci0",
1449 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1450 {CC"getCompileQueueSize",
1451 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1452 {CC"testSetForceInlineMethod0",
1453 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1454 {CC"enqueueMethodForCompilation0",
1455 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1456 {CC"clearMethodState0",
1457 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1458 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1459 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1460 {CC"matchesMethod",
1461 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1462 (void*)&WB_MatchesMethod},
1463 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1464 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1465 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1466 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1467 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1468 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1469 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1470 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1471 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1472 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1473 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1474 (void*)&WB_SetStringVMFlag},
1475 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1476 (void*)&WB_GetBooleanVMFlag},
1477 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1478 (void*)&WB_GetIntVMFlag},
1479 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1480 (void*)&WB_GetUintVMFlag},
1481 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1482 (void*)&WB_GetIntxVMFlag},
1483 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1484 (void*)&WB_GetUintxVMFlag},
1485 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1486 (void*)&WB_GetUint64VMFlag},
1487 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1488 (void*)&WB_GetSizeTVMFlag},
1489 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1490 (void*)&WB_GetDoubleVMFlag},
1491 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1492 (void*)&WB_GetStringVMFlag},
1493 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1494 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1495 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1496 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1497 {CC"allocateMetaspace",
1498 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1499 {CC"freeMetaspace",
1500 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1501 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1502 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1503 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1504 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1505 (void*)&WB_GetNMethod },
1506 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1507 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1508 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1509 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1510 {CC"getCompilationActivityMode",
1511 CC"()I", (void*)&WB_GetCompilationActivityMode},
1512 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1513 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1514 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1515 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1516 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1517 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1518 {CC"getMethodBooleanOption",
1519 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1520 (void*)&WB_GetMethodBooleaneOption},
1521 {CC"getMethodIntxOption",
1522 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1523 (void*)&WB_GetMethodIntxOption},
1524 {CC"getMethodUintxOption",
1525 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1526 (void*)&WB_GetMethodUintxOption},
1527 {CC"getMethodDoubleOption",
1528 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1529 (void*)&WB_GetMethodDoubleOption},
1530 {CC"getMethodStringOption",
1531 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1532 (void*)&WB_GetMethodStringOption},
1533 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1534 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1535 };
1536
1537 #undef CC
1538
1539 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1540 {
1541 if (WhiteBoxAPI) {
1542 // Make sure that wbclass is loaded by the null classloader
1543 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1544 Handle loader(ikh->class_loader());
1545 if (loader.is_null()) {
1546 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1547 WhiteBox::register_extended(env, wbclass, thread);
1548 WhiteBox::set_used();
1549 }
1550 }
1551 }
1552 JVM_END