1 /*
2 * Copyright (c) 2012, 2016, 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 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(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
313 G1CollectedHeap* g1 = G1CollectedHeap::heap();
314 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
315 return hr->is_humongous();
316 WB_END
317
318 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
319 G1CollectedHeap* g1 = G1CollectedHeap::heap();
320 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
321 return hr->is_free();
322 WB_END
323
324 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
325 G1CollectedHeap* g1 = G1CollectedHeap::heap();
326 size_t nr = g1->max_regions();
327 return (jlong)nr;
328 WB_END
329
330 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
331 G1CollectedHeap* g1 = G1CollectedHeap::heap();
332 size_t nr = g1->num_free_regions();
333 return (jlong)nr;
334 WB_END
335
336 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
337 G1CollectedHeap* g1h = G1CollectedHeap::heap();
338 return g1h->concurrent_mark()->cmThread()->during_cycle();
339 WB_END
340
341 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
342 G1CollectedHeap* g1h = G1CollectedHeap::heap();
343 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
344 g1h->collect(GCCause::_wb_conc_mark);
345 return true;
346 }
347 return false;
348 WB_END
349
350 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
351 return (jint)HeapRegion::GrainBytes;
352 WB_END
353
354 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
355 ParallelScavengeHeap* ps = ParallelScavengeHeap::heap();
356 size_t alignment = ps->gens()->virtual_spaces()->alignment();
357 return (jlong)alignment;
358 WB_END
359
360 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
361 size_t alignment = ParallelScavengeHeap::heap()->generation_alignment();
362 return (jlong)alignment;
363 WB_END
364
365 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
366 ResourceMark rm(THREAD);
367 G1CollectedHeap* g1h = G1CollectedHeap::heap();
368 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
369 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
370 return JNIHandles::make_local(env, h());
371 WB_END
372 #endif // INCLUDE_ALL_GCS
373
374 #if INCLUDE_NMT
375 // Alloc memory using the test memory type so that we can use that to see if
376 // NMT picks it up correctly
377 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
378 jlong addr = 0;
379 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
380 return addr;
381 WB_END
382
383 // Alloc memory with pseudo call stack. The test can create psudo malloc
384 // allocation site to stress the malloc tracking.
385 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
386 address pc = (address)(size_t)pseudo_stack;
387 NativeCallStack stack(&pc, 1);
388 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
389 WB_END
390
391 // Free the memory allocated by NMTAllocTest
392 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
393 os::free((void*)(uintptr_t)mem);
394 WB_END
395
396 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
397 jlong addr = 0;
398
399 addr = (jlong)(uintptr_t)os::reserve_memory(size);
400 MemTracker::record_virtual_memory_type((address)addr, mtTest);
401
402 return addr;
403 WB_END
404
405 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
406 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
407 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
408 WB_END
409
410 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
411 os::uncommit_memory((char *)(uintptr_t)addr, size);
412 WB_END
413
414 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
415 os::release_memory((char *)(uintptr_t)addr, size);
416 WB_END
417
418 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
419 // Test that we can downgrade NMT levels but not upgrade them.
420 if (MemTracker::tracking_level() == NMT_off) {
421 MemTracker::transition_to(NMT_off);
422 return MemTracker::tracking_level() == NMT_off;
423 } else {
424 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
425 MemTracker::transition_to(NMT_summary);
426 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
427
428 // Can't go to detail once NMT is set to summary.
429 MemTracker::transition_to(NMT_detail);
430 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
431
432 // Shutdown sets tracking level to minimal.
433 MemTracker::shutdown();
434 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
435
436 // Once the tracking level is minimal, we cannot increase to summary.
437 // The code ignores this request instead of asserting because if the malloc site
438 // table overflows in another thread, it tries to change the code to summary.
439 MemTracker::transition_to(NMT_summary);
440 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
441
442 // Really can never go up to detail, verify that the code would never do this.
443 MemTracker::transition_to(NMT_detail);
444 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
445 return MemTracker::tracking_level() == NMT_minimal;
446 }
447 WB_END
448
449 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
450 int hash_size = MallocSiteTable::hash_buckets();
451 assert(hash_size > 0, "NMT hash_size should be > 0");
452 return (jint)hash_size;
453 WB_END
454 #endif // INCLUDE_NMT
455
456 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
457 assert(method != NULL, "method should not be null");
458 ThreadToNativeFromVM ttn(thread);
459 return env->FromReflectedMethod(method);
460 }
461
462 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
463 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
464 private:
465 int _result;
466 const bool _make_not_entrant;
467 public:
468 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
469 _result(0), _make_not_entrant(make_not_entrant) { }
470 int result() const { return _result; }
471
472 void doit() {
473 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
474 if (t->has_last_Java_frame()) {
475 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
476 frame* f = fst.current();
477 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
478 RegisterMap* reg_map = fst.register_map();
479 Deoptimization::deoptimize(t, *f, reg_map);
480 if (_make_not_entrant) {
481 nmethod* nm = CodeCache::find_nmethod(f->pc());
482 assert(nm != NULL, "sanity check");
483 nm->make_not_entrant();
484 }
485 ++_result;
486 }
487 }
488 }
489 }
490 }
491 };
492
493 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
494 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
495 VMThread::execute(&op);
496 return op.result();
497 WB_END
498
499 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
500 MutexLockerEx mu(Compile_lock);
501 CodeCache::mark_all_nmethods_for_deoptimization();
502 VM_Deoptimize op;
503 VMThread::execute(&op);
504 WB_END
505
506 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
507 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
508 int result = 0;
509 CHECK_JNI_EXCEPTION_(env, result);
510 MutexLockerEx mu(Compile_lock);
511 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
512 if (is_osr) {
513 result += mh->mark_osr_nmethods();
514 } else if (mh->code() != NULL) {
515 mh->code()->mark_for_deoptimization();
516 ++result;
517 }
518 result += CodeCache::mark_for_deoptimization(mh());
519 if (result > 0) {
520 VM_Deoptimize op;
521 VMThread::execute(&op);
522 }
523 return result;
524 WB_END
525
526 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, 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 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
532 if (code == NULL) {
533 return JNI_FALSE;
534 }
535 return (code->is_alive() && !code->is_marked_for_deoptimization());
536 WB_END
537
538 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
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 if (is_osr) {
544 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
545 } else {
546 return CompilationPolicy::can_be_compiled(mh, comp_level);
547 }
548 WB_END
549
550 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
551 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
552 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
553 MutexLockerEx mu(Compile_lock);
554 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
555 return mh->queued_for_compilation();
556 WB_END
557
558 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
559 if (compLevel < CompLevel_none || compLevel > CompLevel_highest_tier) {
560 return false; // Intrinsic is not available on a non-existent compilation level.
561 }
562 jmethodID method_id, compilation_context_id;
563 method_id = reflected_method_to_jmid(thread, env, method);
564 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
565 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
566
567 DirectiveSet* directive;
568 if (compilation_context != NULL) {
569 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
570 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
571 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
572 directive = DirectivesStack::getMatchingDirective(cch, CompileBroker::compiler((int)compLevel));
573 } else {
574 // Calling with NULL matches default directive
575 directive = DirectivesStack::getDefaultDirective(CompileBroker::compiler((int)compLevel));
576 }
577 bool result = CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, directive);
578 DirectivesStack::release(directive);
579 return result;
580 WB_END
581
582 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
583 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
584 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
585 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
586 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
587 return (code != NULL ? code->comp_level() : CompLevel_none);
588 WB_END
589
590 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
591 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
592 CHECK_JNI_EXCEPTION(env);
593 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
594 if (is_osr) {
595 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
596 } else {
597 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
598 }
599 WB_END
600
601 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
602 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
603 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
604 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
605 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
606 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
607 WB_END
608
609 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(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->dont_inline();
614 mh->set_dont_inline(value == JNI_TRUE);
615 return result;
616 WB_END
617
618 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
619 if (comp_level == CompLevel_any) {
620 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
621 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
622 } else {
623 return CompileBroker::queue_size(comp_level);
624 }
625 WB_END
626
627 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
628 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
629 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
630 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
631 bool result = mh->force_inline();
632 mh->set_force_inline(value == JNI_TRUE);
633 return result;
634 WB_END
635
636 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
637 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
638 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
639 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
640 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
641 MutexLockerEx mu(Compile_lock);
642 return (mh->queued_for_compilation() || nm != NULL);
643 WB_END
644
645 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method))
646 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
647 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
648
649 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
650 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(CompLevel_simple));
651 bool result = directive->PrintAssemblyOption;
652 DirectivesStack::release(directive);
653
654 return result;
655 WB_END
656
657 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
658 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
659 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
660
661 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
662
663 ResourceMark rm;
664 const char* error_msg = NULL;
665 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
666 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
667
668 if (m == NULL) {
669 assert(error_msg != NULL, "Always have an error message");
670 tty->print_cr("Got error: %s", error_msg);
671 return -1; // Pattern failed
672 }
673
674 // Pattern works - now check if it matches
675 int result;
676 if (m->match(mh, InlineMatcher::force_inline)) {
677 result = 2; // Force inline match
678 } else if (m->match(mh, InlineMatcher::dont_inline)) {
679 result = 1; // Dont inline match
680 } else {
681 result = 0; // No match
682 }
683 delete m;
684 return result;
685 WB_END
686
687 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
688 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
689 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
690
691 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
692
693 ResourceMark rm;
694 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
695
696 const char* error_msg = NULL;
697
698 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
699 if (m == NULL) {
700 assert(error_msg != NULL, "Must have error_msg");
701 tty->print_cr("Got error: %s", error_msg);
702 return -1;
703 }
704
705 // Pattern works - now check if it matches
706 int result = m->matches(mh);
707 delete m;
708 assert(result == 0 || result == 1, "Result out of range");
709 return result;
710 WB_END
711
712 class AlwaysFalseClosure : public BoolObjectClosure {
713 public:
714 bool do_object_b(oop p) { return false; }
715 };
716
717 static AlwaysFalseClosure always_false;
718
719 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
720 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
721 CHECK_JNI_EXCEPTION(env);
722 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
723 MutexLockerEx mu(Compile_lock);
724 MethodData* mdo = mh->method_data();
725 MethodCounters* mcs = mh->method_counters();
726
727 if (mdo != NULL) {
728 mdo->init();
729 ResourceMark rm;
730 int arg_count = mdo->method()->size_of_parameters();
731 for (int i = 0; i < arg_count; i++) {
732 mdo->set_arg_modified(i, 0);
733 }
734 MutexLockerEx mu(mdo->extra_data_lock());
735 mdo->clean_method_data(&always_false);
736 }
737
738 mh->clear_not_c1_compilable();
739 mh->clear_not_c2_compilable();
740 mh->clear_not_c2_osr_compilable();
741 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
742 if (mcs != NULL) {
743 mcs->backedge_counter()->init();
744 mcs->invocation_counter()->init();
745 mcs->set_interpreter_invocation_count(0);
746 mcs->set_interpreter_throwout_count(0);
747
748 #ifdef TIERED
749 mcs->set_rate(0.0F);
750 mh->set_prev_event_count(0);
751 mh->set_prev_time(0);
752 #endif
753 }
754 WB_END
755
756 template <typename T>
757 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
758 if (name == NULL) {
759 return false;
760 }
761 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
762 const char* flag_name = env->GetStringUTFChars(name, NULL);
763 Flag::Error result = (*TAt)(flag_name, value, true, true);
764 env->ReleaseStringUTFChars(name, flag_name);
765 return (result == Flag::SUCCESS);
766 }
767
768 template <typename T>
769 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
770 if (name == NULL) {
771 return false;
772 }
773 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
774 const char* flag_name = env->GetStringUTFChars(name, NULL);
775 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
776 env->ReleaseStringUTFChars(name, flag_name);
777 return (result == Flag::SUCCESS);
778 }
779
780 template <typename T>
781 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
782 ResourceMark rm(thread);
783 jclass clazz = env->FindClass(name->as_C_string());
784 CHECK_JNI_EXCEPTION_(env, NULL);
785 jmethodID methodID = env->GetStaticMethodID(clazz,
786 vmSymbols::valueOf_name()->as_C_string(),
787 sig->as_C_string());
788 CHECK_JNI_EXCEPTION_(env, NULL);
789 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
790 CHECK_JNI_EXCEPTION_(env, NULL);
791 return result;
792 }
793
794 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
795 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
796 }
797 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
798 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
799 }
800 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
801 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
802 }
803 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
804 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
805 }*/
806 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
807 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
808 }
809
810 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
811 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
812 const char* flag_name = env->GetStringUTFChars(name, NULL);
813 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
814 env->ReleaseStringUTFChars(name, flag_name);
815 return result;
816 }
817
818 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
819 Flag* flag = getVMFlag(thread, env, name);
820 return (flag != NULL) && flag->is_constant_in_binary();
821 WB_END
822
823 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
824 Flag* flag = getVMFlag(thread, env, name);
825 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
826 WB_END
827
828 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
829 bool result;
830 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
831 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
832 return booleanBox(thread, env, result);
833 }
834 return NULL;
835 WB_END
836
837 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
838 int result;
839 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
840 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
841 return longBox(thread, env, result);
842 }
843 return NULL;
844 WB_END
845
846 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
847 uint result;
848 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
849 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
850 return longBox(thread, env, result);
851 }
852 return NULL;
853 WB_END
854
855 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
856 intx result;
857 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
858 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
859 return longBox(thread, env, result);
860 }
861 return NULL;
862 WB_END
863
864 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
865 uintx result;
866 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
867 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
868 return longBox(thread, env, result);
869 }
870 return NULL;
871 WB_END
872
873 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
874 uint64_t result;
875 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
876 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
877 return longBox(thread, env, result);
878 }
879 return NULL;
880 WB_END
881
882 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
883 uintx result;
884 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
885 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
886 return longBox(thread, env, result);
887 }
888 return NULL;
889 WB_END
890
891 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
892 double result;
893 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
894 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
895 return doubleBox(thread, env, result);
896 }
897 return NULL;
898 WB_END
899
900 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
901 ccstr ccstrResult;
902 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
903 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
904 jstring result = env->NewStringUTF(ccstrResult);
905 CHECK_JNI_EXCEPTION_(env, NULL);
906 return result;
907 }
908 return NULL;
909 WB_END
910
911 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
912 bool result = value == JNI_TRUE ? true : false;
913 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
914 WB_END
915
916 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
917 int result = value;
918 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
919 WB_END
920
921 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
922 uint result = value;
923 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
924 WB_END
925
926 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
927 intx result = value;
928 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
929 WB_END
930
931 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
932 uintx result = value;
933 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
934 WB_END
935
936 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
937 uint64_t result = value;
938 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
939 WB_END
940
941 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
942 size_t result = value;
943 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
944 WB_END
945
946 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
947 double result = value;
948 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
949 WB_END
950
951 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
952 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
953 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
954 ccstr ccstrResult = ccstrValue;
955 bool needFree;
956 {
957 ThreadInVMfromNative ttvfn(thread); // back to VM
958 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
959 }
960 if (value != NULL) {
961 env->ReleaseStringUTFChars(value, ccstrValue);
962 }
963 if (needFree) {
964 FREE_C_HEAP_ARRAY(char, ccstrResult);
965 }
966 WB_END
967
968 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
969 WhiteBox::compilation_locked = true;
970 WB_END
971
972 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
973 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
974 WhiteBox::compilation_locked = false;
975 mo.notify_all();
976 WB_END
977
978 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
979 // Force a code cache sweep and block until it finished
980 NMethodSweeper::force_sweep();
981 WB_END
982
983 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
984 ResourceMark rm(THREAD);
985 int len;
986 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
987 return (StringTable::lookup(name, len) != NULL);
988 WB_END
989
990 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
991 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
992 Universe::heap()->collect(GCCause::_last_ditch_collection);
993 #if INCLUDE_ALL_GCS
994 if (UseG1GC) {
995 // Needs to be cleared explicitly for G1
996 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
997 }
998 #endif // INCLUDE_ALL_GCS
999 WB_END
1000
1001 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1002 Universe::heap()->collect(GCCause::_wb_young_gc);
1003 WB_END
1004
1005 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1006 // static+volatile in order to force the read to happen
1007 // (not be eliminated by the compiler)
1008 static char c;
1009 static volatile char* p;
1010
1011 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1012 if (p == NULL) {
1013 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1014 }
1015
1016 c = *p;
1017 WB_END
1018
1019 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1020 const char* features = VM_Version::features_string();
1021 ThreadToNativeFromVM ttn(thread);
1022 jstring features_string = env->NewStringUTF(features);
1023
1024 CHECK_JNI_EXCEPTION_(env, NULL);
1025
1026 return features_string;
1027 WB_END
1028
1029 int WhiteBox::get_blob_type(const CodeBlob* code) {
1030 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1031 return CodeCache::get_code_heap(code)->code_blob_type();
1032 }
1033
1034 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1035 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1036 return CodeCache::get_code_heap(blob_type);
1037 }
1038
1039 struct CodeBlobStub {
1040 CodeBlobStub(const CodeBlob* blob) :
1041 name(os::strdup(blob->name())),
1042 size(blob->size()),
1043 blob_type(WhiteBox::get_blob_type(blob)),
1044 address((jlong) blob) { }
1045 ~CodeBlobStub() { os::free((void*) name); }
1046 const char* const name;
1047 const jint size;
1048 const jint blob_type;
1049 const jlong address;
1050 };
1051
1052 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1053 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1054 CHECK_JNI_EXCEPTION_(env, NULL);
1055 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1056
1057 jstring name = env->NewStringUTF(cb->name);
1058 CHECK_JNI_EXCEPTION_(env, NULL);
1059 env->SetObjectArrayElement(result, 0, name);
1060
1061 jobject obj = integerBox(thread, env, cb->size);
1062 CHECK_JNI_EXCEPTION_(env, NULL);
1063 env->SetObjectArrayElement(result, 1, obj);
1064
1065 obj = integerBox(thread, env, cb->blob_type);
1066 CHECK_JNI_EXCEPTION_(env, NULL);
1067 env->SetObjectArrayElement(result, 2, obj);
1068
1069 obj = longBox(thread, env, cb->address);
1070 CHECK_JNI_EXCEPTION_(env, NULL);
1071 env->SetObjectArrayElement(result, 3, obj);
1072
1073 return result;
1074 }
1075
1076 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1077 ResourceMark rm(THREAD);
1078 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1079 CHECK_JNI_EXCEPTION_(env, NULL);
1080 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1081 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1082 jobjectArray result = NULL;
1083 if (code == NULL) {
1084 return result;
1085 }
1086 int insts_size = code->insts_size();
1087
1088 ThreadToNativeFromVM ttn(thread);
1089 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1090 CHECK_JNI_EXCEPTION_(env, NULL);
1091 result = env->NewObjectArray(5, clazz, NULL);
1092 if (result == NULL) {
1093 return result;
1094 }
1095
1096 CodeBlobStub stub(code);
1097 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1098 env->SetObjectArrayElement(result, 0, codeBlob);
1099
1100 jobject level = integerBox(thread, env, code->comp_level());
1101 CHECK_JNI_EXCEPTION_(env, NULL);
1102 env->SetObjectArrayElement(result, 1, level);
1103
1104 jbyteArray insts = env->NewByteArray(insts_size);
1105 CHECK_JNI_EXCEPTION_(env, NULL);
1106 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1107 env->SetObjectArrayElement(result, 2, insts);
1108
1109 jobject id = integerBox(thread, env, code->compile_id());
1110 CHECK_JNI_EXCEPTION_(env, NULL);
1111 env->SetObjectArrayElement(result, 3, id);
1112
1113 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1114 CHECK_JNI_EXCEPTION_(env, NULL);
1115 env->SetObjectArrayElement(result, 4, entry_point);
1116
1117 return result;
1118 WB_END
1119
1120 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1121 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1122 BufferBlob* blob;
1123 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1124 if (full_size < size) {
1125 full_size += round_to(size - full_size, oopSize);
1126 }
1127 {
1128 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1129 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1130 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1131 }
1132 // Track memory usage statistic after releasing CodeCache_lock
1133 MemoryService::track_code_cache_memory_usage();
1134 return blob;
1135 }
1136
1137 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1138 if (size < 0) {
1139 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1140 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1141 }
1142 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1143 WB_END
1144
1145 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1146 if (addr == 0) {
1147 return;
1148 }
1149 BufferBlob::free((BufferBlob*) addr);
1150 WB_END
1151
1152 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1153 ResourceMark rm;
1154 GrowableArray<CodeBlobStub*> blobs;
1155 {
1156 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1157 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1158 if (heap == NULL) {
1159 return NULL;
1160 }
1161 for (CodeBlob* cb = (CodeBlob*) heap->first();
1162 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1163 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1164 new (stub) CodeBlobStub(cb);
1165 blobs.append(stub);
1166 }
1167 }
1168 if (blobs.length() == 0) {
1169 return NULL;
1170 }
1171 ThreadToNativeFromVM ttn(thread);
1172 jobjectArray result = NULL;
1173 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1174 CHECK_JNI_EXCEPTION_(env, NULL);
1175 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1176 if (result == NULL) {
1177 return result;
1178 }
1179 int i = 0;
1180 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1181 it != blobs.end(); ++it) {
1182 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1183 env->SetObjectArrayElement(result, i, obj);
1184 ++i;
1185 }
1186 return result;
1187 WB_END
1188
1189 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1190 return CompileBroker::get_compilation_activity_mode();
1191 WB_END
1192
1193 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1194 if (addr == 0) {
1195 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1196 "WB_GetCodeBlob: addr is null");
1197 }
1198 ThreadToNativeFromVM ttn(thread);
1199 CodeBlobStub stub((CodeBlob*) addr);
1200 return codeBlob2objectArray(thread, env, &stub);
1201 WB_END
1202
1203 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1204 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1205 CHECK_JNI_EXCEPTION_(env, 0);
1206 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1207 return (jlong) mh->method_data();
1208 WB_END
1209
1210 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1211 return (jlong) Thread::current()->stack_size();
1212 WB_END
1213
1214 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1215 JavaThread* t = JavaThread::current();
1216 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1217 WB_END
1218
1219
1220 int WhiteBox::array_bytes_to_length(size_t bytes) {
1221 return Array<u1>::bytes_to_length(bytes);
1222 }
1223
1224 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1225 if (size < 0) {
1226 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1227 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1228 }
1229
1230 oop class_loader_oop = JNIHandles::resolve(class_loader);
1231 ClassLoaderData* cld = class_loader_oop != NULL
1232 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1233 : ClassLoaderData::the_null_class_loader_data();
1234
1235 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1236
1237 return (jlong)(uintptr_t)metadata;
1238 WB_END
1239
1240 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1241 oop class_loader_oop = JNIHandles::resolve(class_loader);
1242 ClassLoaderData* cld = class_loader_oop != NULL
1243 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1244 : ClassLoaderData::the_null_class_loader_data();
1245
1246 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1247 WB_END
1248
1249 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1250 if (inc < 0) {
1251 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1252 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1253 }
1254
1255 jlong max_size_t = (jlong) ((size_t) -1);
1256 if (inc > max_size_t) {
1257 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1258 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1259 }
1260
1261 size_t new_cap_until_GC = 0;
1262 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1263 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1264 if (!success) {
1265 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1266 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1267 "due to contention with another thread");
1268 }
1269 return (jlong) new_cap_until_GC;
1270 WB_END
1271
1272 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1273 return (jlong) MetaspaceGC::capacity_until_GC();
1274 WB_END
1275
1276
1277
1278 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1279 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1280 Monitor::_safepoint_check_always :
1281 Monitor::_safepoint_check_never;
1282 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1283 attemptedNoSafepointValue == JNI_TRUE);
1284 WB_END
1285
1286 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1287 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1288 WB_END
1289
1290 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1291 oop obj_oop = JNIHandles::resolve(obj);
1292 return (jboolean) obj_oop->mark()->has_monitor();
1293 WB_END
1294
1295 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1296 VM_ForceSafepoint force_safepoint_op;
1297 VMThread::execute(&force_safepoint_op);
1298 WB_END
1299
1300 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1301 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1302 return (jlong) ikh->constants();
1303 WB_END
1304
1305 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb))
1306 VM_ClearICs clear_ics;
1307 VMThread::execute(&clear_ics);
1308 WB_END
1309
1310 template <typename T>
1311 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1312 assert(value != NULL, "sanity");
1313 if (method == NULL || name == NULL) {
1314 return false;
1315 }
1316 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1317 CHECK_JNI_EXCEPTION_(env, false);
1318 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1319 // can't be in VM when we call JNI
1320 ThreadToNativeFromVM ttnfv(thread);
1321 const char* flag_name = env->GetStringUTFChars(name, NULL);
1322 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1323 env->ReleaseStringUTFChars(name, flag_name);
1324 return result;
1325 }
1326
1327 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1328 bool result;
1329 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1330 // can't be in VM when we call JNI
1331 ThreadToNativeFromVM ttnfv(thread);
1332 return booleanBox(thread, env, result);
1333 }
1334 return NULL;
1335 WB_END
1336
1337 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1338 intx result;
1339 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1340 // can't be in VM when we call JNI
1341 ThreadToNativeFromVM ttnfv(thread);
1342 return longBox(thread, env, result);
1343 }
1344 return NULL;
1345 WB_END
1346
1347 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1348 uintx result;
1349 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1350 // can't be in VM when we call JNI
1351 ThreadToNativeFromVM ttnfv(thread);
1352 return longBox(thread, env, result);
1353 }
1354 return NULL;
1355 WB_END
1356
1357 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1358 double result;
1359 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1360 // can't be in VM when we call JNI
1361 ThreadToNativeFromVM ttnfv(thread);
1362 return doubleBox(thread, env, result);
1363 }
1364 return NULL;
1365 WB_END
1366
1367 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1368 ccstr ccstrResult;
1369 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1370 // can't be in VM when we call JNI
1371 ThreadToNativeFromVM ttnfv(thread);
1372 jstring result = env->NewStringUTF(ccstrResult);
1373 CHECK_JNI_EXCEPTION_(env, NULL);
1374 return result;
1375 }
1376 return NULL;
1377 WB_END
1378
1379 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1380 oop obj_oop = JNIHandles::resolve(obj);
1381 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1382 WB_END
1383
1384 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1385 return StringTable::shared_string_ignored();
1386 WB_END
1387
1388 //Some convenience methods to deal with objects from java
1389 int WhiteBox::offset_for_field(const char* field_name, oop object,
1390 Symbol* signature_symbol) {
1391 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1392 Thread* THREAD = Thread::current();
1393
1394 //Get the class of our object
1395 Klass* arg_klass = object->klass();
1396 //Turn it into an instance-klass
1397 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1398
1399 //Create symbols to look for in the class
1400 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1401 THREAD);
1402
1403 //To be filled in with an offset of the field we're looking for
1404 fieldDescriptor fd;
1405
1406 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1407 if (res == NULL) {
1408 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1409 name_symbol->as_C_string());
1410 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class");
1411 }
1412
1413 //fetch the field at the offset we've found
1414 int dest_offset = fd.offset();
1415
1416 return dest_offset;
1417 }
1418
1419
1420 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1421 int offset = offset_for_field(field_name, object,
1422 vmSymbols::string_signature());
1423 oop string = object->obj_field(offset);
1424 if (string == NULL) {
1425 return NULL;
1426 }
1427 const char* ret = java_lang_String::as_utf8_string(string);
1428 return ret;
1429 }
1430
1431 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1432 int offset =
1433 offset_for_field(field_name, object, vmSymbols::bool_signature());
1434 bool ret = (object->bool_field(offset) == JNI_TRUE);
1435 return ret;
1436 }
1437
1438 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1439 ResourceMark rm;
1440 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1441
1442 // one by one registration natives for exception catching
1443 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1444 CHECK_JNI_EXCEPTION(env);
1445 for (int i = 0, n = method_count; i < n; ++i) {
1446 // Skip dummy entries
1447 if (method_array[i].fnPtr == NULL) continue;
1448 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1449 jthrowable throwable_obj = env->ExceptionOccurred();
1450 if (throwable_obj != NULL) {
1451 env->ExceptionClear();
1452 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1453 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1454 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1455 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1456 method_array[i].name, method_array[i].signature);
1457 }
1458 } else {
1459 // Registration failed unexpectedly.
1460 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1461 method_array[i].name, method_array[i].signature);
1462 env->UnregisterNatives(wbclass);
1463 break;
1464 }
1465 }
1466 }
1467 }
1468
1469 #define CC (char*)
1470
1471 static JNINativeMethod methods[] = {
1472 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1473 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1474 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1475 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1476 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1477 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1478 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1479 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1480 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1481 {CC"parseCommandLine0",
1482 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1483 (void*) &WB_ParseCommandLine
1484 },
1485 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1486 (void*)&WB_AddToBootstrapClassLoaderSearch},
1487 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1488 (void*)&WB_AddToSystemClassLoaderSearch},
1489 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1490 (void*)&WB_GetCompressedOopsMaxHeapSize},
1491 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1492 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1493 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1494 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1495 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1496 #if INCLUDE_ALL_GCS
1497 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1498 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z",(void*)&WB_G1IsHumongous },
1499 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1500 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1501 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1502 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1503 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1504 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1505 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1506 (void*)&WB_G1AuxiliaryMemoryUsage },
1507 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1508 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1509 #endif // INCLUDE_ALL_GCS
1510 #if INCLUDE_NMT
1511 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1512 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1513 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1514 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1515 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1516 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1517 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1518 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1519 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1520 #endif // INCLUDE_NMT
1521 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1522 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1523 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1524 (void*)&WB_DeoptimizeMethod },
1525 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1526 (void*)&WB_IsMethodCompiled },
1527 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1528 (void*)&WB_IsMethodCompilable},
1529 {CC"isMethodQueuedForCompilation0",
1530 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1531 {CC"isIntrinsicAvailable0",
1532 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1533 (void*)&WB_IsIntrinsicAvailable},
1534 {CC"makeMethodNotCompilable0",
1535 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1536 {CC"testSetDontInlineMethod0",
1537 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1538 {CC"getMethodCompilationLevel0",
1539 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1540 {CC"getMethodEntryBci0",
1541 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1542 {CC"getCompileQueueSize",
1543 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1544 {CC"testSetForceInlineMethod0",
1545 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1546 {CC"enqueueMethodForCompilation0",
1547 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1548 {CC"clearMethodState0",
1549 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1550 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1551 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1552 {CC"matchesMethod",
1553 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1554 (void*)&WB_MatchesMethod},
1555 {CC"matchesInline",
1556 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1557 (void*)&WB_MatchesInline},
1558 {CC"shouldPrintAssembly",
1559 CC"(Ljava/lang/reflect/Executable;)Z",
1560 (void*)&WB_ShouldPrintAssembly},
1561
1562 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1563 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1564 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1565 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1566 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1567 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1568 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1569 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1570 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1571 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1572 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1573 (void*)&WB_SetStringVMFlag},
1574 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1575 (void*)&WB_GetBooleanVMFlag},
1576 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1577 (void*)&WB_GetIntVMFlag},
1578 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1579 (void*)&WB_GetUintVMFlag},
1580 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1581 (void*)&WB_GetIntxVMFlag},
1582 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1583 (void*)&WB_GetUintxVMFlag},
1584 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1585 (void*)&WB_GetUint64VMFlag},
1586 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1587 (void*)&WB_GetSizeTVMFlag},
1588 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1589 (void*)&WB_GetDoubleVMFlag},
1590 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1591 (void*)&WB_GetStringVMFlag},
1592 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1593 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1594 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1595 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1596 {CC"allocateMetaspace",
1597 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1598 {CC"freeMetaspace",
1599 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1600 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1601 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1602 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1603 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1604 (void*)&WB_GetNMethod },
1605 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1606 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1607 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1608 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1609 {CC"getCompilationActivityMode",
1610 CC"()I", (void*)&WB_GetCompilationActivityMode},
1611 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1612 (void*)&WB_GetMethodData },
1613 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1614 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1615 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1616 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1617 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1618 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1619 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
1620 {CC"getMethodBooleanOption",
1621 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1622 (void*)&WB_GetMethodBooleaneOption},
1623 {CC"getMethodIntxOption",
1624 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1625 (void*)&WB_GetMethodIntxOption},
1626 {CC"getMethodUintxOption",
1627 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1628 (void*)&WB_GetMethodUintxOption},
1629 {CC"getMethodDoubleOption",
1630 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1631 (void*)&WB_GetMethodDoubleOption},
1632 {CC"getMethodStringOption",
1633 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1634 (void*)&WB_GetMethodStringOption},
1635 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1636 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1637 {CC"clearInlineCaches", CC"()V", (void*)&WB_ClearInlineCaches },
1638 };
1639
1640 #undef CC
1641
1642 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1643 {
1644 if (WhiteBoxAPI) {
1645 // Make sure that wbclass is loaded by the null classloader
1646 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1647 Handle loader(ikh->class_loader());
1648 if (loader.is_null()) {
1649 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1650 WhiteBox::register_extended(env, wbclass, thread);
1651 WhiteBox::set_used();
1652 }
1653 }
1654 }
1655 JVM_END