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/constantPool.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "prims/wbtestmethods/parserTests.hpp"
40 #include "prims/whitebox.hpp"
41 #include "runtime/arguments.hpp"
42 #include "runtime/compilationPolicy.hpp"
43 #include "runtime/deoptimization.hpp"
44 #include "runtime/interfaceSupport.hpp"
45 #include "runtime/javaCalls.hpp"
46 #include "runtime/os.hpp"
47 #include "runtime/sweeper.hpp"
48 #include "runtime/thread.hpp"
49 #include "runtime/vm_version.hpp"
50 #include "utilities/array.hpp"
51 #include "utilities/debug.hpp"
52 #include "utilities/exceptions.hpp"
53 #include "utilities/macros.hpp"
54 #if INCLUDE_ALL_GCS
55 #include "gc/g1/concurrentMarkThread.hpp"
56 #include "gc/g1/g1CollectedHeap.inline.hpp"
57 #include "gc/g1/g1ConcurrentMark.hpp"
58 #include "gc/g1/heapRegionRemSet.hpp"
59 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
60 #include "gc/parallel/adjoiningGenerations.hpp"
61 #endif // INCLUDE_ALL_GCS
62 #if INCLUDE_NMT
63 #include "services/mallocSiteTable.hpp"
64 #include "services/memTracker.hpp"
65 #include "utilities/nativeCallStack.hpp"
66 #endif // INCLUDE_NMT
67
68
69 #define SIZE_T_MAX_VALUE ((size_t) -1)
70
71 bool WhiteBox::_used = false;
72 volatile bool WhiteBox::compilation_locked = false;
73
74 class VM_WhiteBoxOperation : public VM_Operation {
75 public:
76 VM_WhiteBoxOperation() { }
77 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
78 bool allow_nested_vm_operations() const { return true; }
79 };
80
81
82 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
83 return (jlong)(void*)JNIHandles::resolve(obj);
84 WB_END
85
86 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
87 return heapOopSize;
88 WB_END
89
90 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
91 return os::vm_page_size();
92 WB_END
93
94 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
95 return os::vm_allocation_granularity();
96 WB_END
97
98 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
99 return os::large_page_size();
100 WB_END
101
102 class WBIsKlassAliveClosure : public KlassClosure {
103 Symbol* _name;
104 bool _found;
105 public:
106 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
107
108 void do_klass(Klass* k) {
109 if (_found) return;
110 Symbol* ksym = k->name();
111 if (ksym->fast_compare(_name) == 0) {
112 _found = true;
113 }
114 }
115
116 bool found() const {
117 return _found;
118 }
119 };
120
121 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
122 Handle h_name = JNIHandles::resolve(name);
123 if (h_name.is_null()) return false;
124 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
125 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
126
127 WBIsKlassAliveClosure closure(sym);
128 ClassLoaderDataGraph::classes_do(&closure);
129
130 return closure.found();
131 WB_END
132
133 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
134 #if INCLUDE_JVMTI
135 ResourceMark rm;
136 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
137 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
138 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
139 assert(err == JVMTI_ERROR_NONE, "must not fail");
140 #endif
141 }
142 WB_END
143
144 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
145 #if INCLUDE_JVMTI
146 ResourceMark rm;
147 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
148 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
149 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
150 assert(err == JVMTI_ERROR_NONE, "must not fail");
151 #endif
152 }
153 WB_END
154
155
156 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
157 return (jlong)Arguments::max_heap_for_compressed_oops();
158 }
159 WB_END
160
161 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
162 CollectorPolicy * p = Universe::heap()->collector_policy();
163 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
164 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
165 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
166 p->space_alignment(), p->heap_alignment());
167 }
168 WB_END
169
170 #ifndef PRODUCT
171 // Forward declaration
172 void TestReservedSpace_test();
173 void TestReserveMemorySpecial_test();
174 void TestVirtualSpace_test();
175 void TestMetaspaceAux_test();
176 #endif
177
178 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
179 #ifndef PRODUCT
180 TestReservedSpace_test();
181 TestReserveMemorySpecial_test();
182 TestVirtualSpace_test();
183 TestMetaspaceAux_test();
184 #endif
185 WB_END
186
187 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
188 size_t granularity = os::vm_allocation_granularity();
189 ReservedHeapSpace rhs(100 * granularity, granularity, false);
190 VirtualSpace vs;
191 vs.initialize(rhs, 50 * granularity);
192
193 // Check if constraints are complied
194 if (!( UseCompressedOops && rhs.base() != NULL &&
195 Universe::narrow_oop_base() != NULL &&
196 Universe::narrow_oop_use_implicit_null_checks() )) {
197 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
198 "\tUseCompressedOops is %d\n"
199 "\trhs.base() is " PTR_FORMAT "\n"
200 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
201 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
202 UseCompressedOops,
203 p2i(rhs.base()),
204 p2i(Universe::narrow_oop_base()),
205 Universe::narrow_oop_use_implicit_null_checks());
206 return;
207 }
208 tty->print_cr("Reading from no access area... ");
209 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
210 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
211 WB_END
212
213 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
214 size_t magnitude, size_t iterations) {
215 size_t granularity = os::vm_allocation_granularity();
216 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
217 VirtualSpace vs;
218 if (!vs.initialize(rhs, 0)) {
219 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
220 return 3;
221 }
222
223 long seed = os::random();
224 tty->print_cr("Random seed is %ld", seed);
225 os::init_random(seed);
226
227 for (size_t i = 0; i < iterations; i++) {
228
229 // Whether we will shrink or grow
230 bool shrink = os::random() % 2L == 0;
231
232 // Get random delta to resize virtual space
233 size_t delta = (size_t)os::random() % magnitude;
234
235 // If we are about to shrink virtual space below zero, then expand instead
236 if (shrink && vs.committed_size() < delta) {
237 shrink = false;
238 }
239
240 // Resizing by delta
241 if (shrink) {
242 vs.shrink_by(delta);
243 } else {
244 // If expanding fails expand_by will silently return false
245 vs.expand_by(delta, true);
246 }
247 }
248 return 0;
249 }
250
251 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
252 jlong reserved_space_size, jlong magnitude, jlong iterations))
253 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
254 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
255 iterations);
256 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
257 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
258 return 1;
259 }
260
261 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
262 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
263 if (sizeof(size_t) < sizeof(jlong)) {
264 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
265 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
266 || iterations > size_t_max_value) {
267 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
268 return 2;
269 }
270 }
271
272 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
273 (size_t) magnitude, (size_t) iterations);
274 WB_END
275
276 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
277 oop p = JNIHandles::resolve(obj);
278 #if INCLUDE_ALL_GCS
279 if (UseG1GC) {
280 G1CollectedHeap* g1 = G1CollectedHeap::heap();
281 const HeapRegion* hr = g1->heap_region_containing(p);
282 if (hr == NULL) {
283 return false;
284 }
285 return !(hr->is_young());
286 } else if (UseParallelGC) {
287 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
288 return !psh->is_in_young(p);
289 }
290 #endif // INCLUDE_ALL_GCS
291 GenCollectedHeap* gch = GenCollectedHeap::heap();
292 return !gch->is_in_young(p);
293 WB_END
294
295 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
296 oop p = JNIHandles::resolve(obj);
297 return p->size() * HeapWordSize;
298 WB_END
299
300 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
301 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
302 return (jlong)alignment;
303 WB_END
304
305 #if INCLUDE_ALL_GCS
306 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
307 G1CollectedHeap* g1 = G1CollectedHeap::heap();
308 oop result = JNIHandles::resolve(obj);
309 const HeapRegion* hr = g1->heap_region_containing(result);
310 return hr->is_humongous();
311 WB_END
312
313 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
314 G1CollectedHeap* g1 = G1CollectedHeap::heap();
315 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
316 return hr->is_humongous();
317 WB_END
318
319 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
320 G1CollectedHeap* g1 = G1CollectedHeap::heap();
321 const HeapRegion* hr = g1->heap_region_containing((void*) addr);
322 return hr->is_free();
323 WB_END
324
325 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
326 G1CollectedHeap* g1 = G1CollectedHeap::heap();
327 size_t nr = g1->max_regions();
328 return (jlong)nr;
329 WB_END
330
331 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
332 G1CollectedHeap* g1 = G1CollectedHeap::heap();
333 size_t nr = g1->num_free_regions();
334 return (jlong)nr;
335 WB_END
336
337 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
338 G1CollectedHeap* g1h = G1CollectedHeap::heap();
339 return g1h->concurrent_mark()->cmThread()->during_cycle();
340 WB_END
341
342 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
343 G1CollectedHeap* g1h = G1CollectedHeap::heap();
344 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
345 g1h->collect(GCCause::_wb_conc_mark);
346 return true;
347 }
348 return false;
349 WB_END
350
351 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
352 return (jint)HeapRegion::GrainBytes;
353 WB_END
354
355 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
356 ParallelScavengeHeap* ps = ParallelScavengeHeap::heap();
357 size_t alignment = ps->gens()->virtual_spaces()->alignment();
358 return (jlong)alignment;
359 WB_END
360
361 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
362 size_t alignment = ParallelScavengeHeap::heap()->generation_alignment();
363 return (jlong)alignment;
364 WB_END
365
366 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
367 ResourceMark rm(THREAD);
368 G1CollectedHeap* g1h = G1CollectedHeap::heap();
369 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
370 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
371 return JNIHandles::make_local(env, h());
372 WB_END
373 #endif // INCLUDE_ALL_GCS
374
375 #if INCLUDE_NMT
376 // Alloc memory using the test memory type so that we can use that to see if
377 // NMT picks it up correctly
378 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
379 jlong addr = 0;
380 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
381 return addr;
382 WB_END
383
384 // Alloc memory with pseudo call stack. The test can create psudo malloc
385 // allocation site to stress the malloc tracking.
386 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
387 address pc = (address)(size_t)pseudo_stack;
388 NativeCallStack stack(&pc, 1);
389 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
390 WB_END
391
392 // Free the memory allocated by NMTAllocTest
393 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
394 os::free((void*)(uintptr_t)mem);
395 WB_END
396
397 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
398 jlong addr = 0;
399
400 addr = (jlong)(uintptr_t)os::reserve_memory(size);
401 MemTracker::record_virtual_memory_type((address)addr, mtTest);
402
403 return addr;
404 WB_END
405
406 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
407 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
408 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
409 WB_END
410
411 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
412 os::uncommit_memory((char *)(uintptr_t)addr, size);
413 WB_END
414
415 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
416 os::release_memory((char *)(uintptr_t)addr, size);
417 WB_END
418
419 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
420 // Test that we can downgrade NMT levels but not upgrade them.
421 if (MemTracker::tracking_level() == NMT_off) {
422 MemTracker::transition_to(NMT_off);
423 return MemTracker::tracking_level() == NMT_off;
424 } else {
425 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
426 MemTracker::transition_to(NMT_summary);
427 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
428
429 // Can't go to detail once NMT is set to summary.
430 MemTracker::transition_to(NMT_detail);
431 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
432
433 // Shutdown sets tracking level to minimal.
434 MemTracker::shutdown();
435 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
436
437 // Once the tracking level is minimal, we cannot increase to summary.
438 // The code ignores this request instead of asserting because if the malloc site
439 // table overflows in another thread, it tries to change the code to summary.
440 MemTracker::transition_to(NMT_summary);
441 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
442
443 // Really can never go up to detail, verify that the code would never do this.
444 MemTracker::transition_to(NMT_detail);
445 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
446 return MemTracker::tracking_level() == NMT_minimal;
447 }
448 WB_END
449
450 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
451 int hash_size = MallocSiteTable::hash_buckets();
452 assert(hash_size > 0, "NMT hash_size should be > 0");
453 return (jint)hash_size;
454 WB_END
455 #endif // INCLUDE_NMT
456
457 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
458 assert(method != NULL, "method should not be null");
459 ThreadToNativeFromVM ttn(thread);
460 return env->FromReflectedMethod(method);
461 }
462
463 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
464 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
465 private:
466 int _result;
467 const bool _make_not_entrant;
468 public:
469 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
470 _result(0), _make_not_entrant(make_not_entrant) { }
471 int result() const { return _result; }
472
473 void doit() {
474 for (JavaThread* t = Threads::first(); t != NULL; t = t->next()) {
475 if (t->has_last_Java_frame()) {
476 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
477 frame* f = fst.current();
478 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
479 RegisterMap* reg_map = fst.register_map();
480 Deoptimization::deoptimize(t, *f, reg_map);
481 if (_make_not_entrant) {
482 nmethod* nm = CodeCache::find_nmethod(f->pc());
483 assert(nm != NULL, "sanity check");
484 nm->make_not_entrant();
485 }
486 ++_result;
487 }
488 }
489 }
490 }
491 }
492 };
493
494 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
495 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
496 VMThread::execute(&op);
497 return op.result();
498 WB_END
499
500 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
501 MutexLockerEx mu(Compile_lock);
502 CodeCache::mark_all_nmethods_for_deoptimization();
503 VM_Deoptimize op;
504 VMThread::execute(&op);
505 WB_END
506
507 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
508 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
509 int result = 0;
510 CHECK_JNI_EXCEPTION_(env, result);
511 MutexLockerEx mu(Compile_lock);
512 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
513 if (is_osr) {
514 result += mh->mark_osr_nmethods();
515 } else if (mh->code() != NULL) {
516 mh->code()->mark_for_deoptimization();
517 ++result;
518 }
519 result += CodeCache::mark_for_deoptimization(mh());
520 if (result > 0) {
521 VM_Deoptimize op;
522 VMThread::execute(&op);
523 }
524 return result;
525 WB_END
526
527 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
528 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
529 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
530 MutexLockerEx mu(Compile_lock);
531 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
532 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
533 if (code == NULL) {
534 return JNI_FALSE;
535 }
536 return (code->is_alive() && !code->is_marked_for_deoptimization());
537 WB_END
538
539 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
540 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
541 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
542 MutexLockerEx mu(Compile_lock);
543 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
544 if (is_osr) {
545 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
546 } else {
547 return CompilationPolicy::can_be_compiled(mh, comp_level);
548 }
549 WB_END
550
551 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
552 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
553 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
554 MutexLockerEx mu(Compile_lock);
555 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
556 return mh->queued_for_compilation();
557 WB_END
558
559 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
560 if (compLevel < CompLevel_none || compLevel > CompLevel_highest_tier) {
561 return false; // Intrinsic is not available on a non-existent compilation level.
562 }
563 jmethodID method_id, compilation_context_id;
564 method_id = reflected_method_to_jmid(thread, env, method);
565 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
566 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
567
568 DirectiveSet* directive;
569 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
570 if (compilation_context != NULL) {
571 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
572 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
573 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
574 directive = DirectivesStack::getMatchingDirective(cch, comp);
575 } else {
576 // Calling with NULL matches default directive
577 directive = DirectivesStack::getDefaultDirective(comp);
578 }
579 bool result = CompileBroker::compiler(compLevel)->is_intrinsic_available(mh, directive);
580 DirectivesStack::release(directive);
581 return result;
582 WB_END
583
584 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
585 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
586 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
587 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
588 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
589 return (code != NULL ? code->comp_level() : CompLevel_none);
590 WB_END
591
592 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
593 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
594 CHECK_JNI_EXCEPTION(env);
595 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
596 if (is_osr) {
597 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
598 } else {
599 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
600 }
601 WB_END
602
603 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
604 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
605 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
606 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
607 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
608 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
609 WB_END
610
611 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(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->dont_inline();
616 mh->set_dont_inline(value == JNI_TRUE);
617 return result;
618 WB_END
619
620 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
621 if (comp_level == CompLevel_any) {
622 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
623 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
624 } else {
625 return CompileBroker::queue_size(comp_level);
626 }
627 WB_END
628
629 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
630 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
631 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
632 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
633 bool result = mh->force_inline();
634 mh->set_force_inline(value == JNI_TRUE);
635 return result;
636 WB_END
637
638 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci, jboolean block))
639 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
640 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
641 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
642 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", block, THREAD);
643 return (mh->queued_for_compilation() || nm != NULL);
644 WB_END
645
646 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
647 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
648 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
649
650 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
651 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
652 bool result = directive->PrintAssemblyOption;
653 DirectivesStack::release(directive);
654
655 return result;
656 WB_END
657
658 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
659 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
660 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
661
662 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
663
664 ResourceMark rm;
665 const char* error_msg = NULL;
666 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
667 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
668
669 if (m == NULL) {
670 assert(error_msg != NULL, "Always have an error message");
671 tty->print_cr("Got error: %s", error_msg);
672 return -1; // Pattern failed
673 }
674
675 // Pattern works - now check if it matches
676 int result;
677 if (m->match(mh, InlineMatcher::force_inline)) {
678 result = 2; // Force inline match
679 } else if (m->match(mh, InlineMatcher::dont_inline)) {
680 result = 1; // Dont inline match
681 } else {
682 result = 0; // No match
683 }
684 delete m;
685 return result;
686 WB_END
687
688 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
689 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
690 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
691
692 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
693
694 ResourceMark rm;
695 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
696
697 const char* error_msg = NULL;
698
699 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
700 if (m == NULL) {
701 assert(error_msg != NULL, "Must have error_msg");
702 tty->print_cr("Got error: %s", error_msg);
703 return -1;
704 }
705
706 // Pattern works - now check if it matches
707 int result = m->matches(mh);
708 delete m;
709 assert(result == 0 || result == 1, "Result out of range");
710 return result;
711 WB_END
712
713 class AlwaysFalseClosure : public BoolObjectClosure {
714 public:
715 bool do_object_b(oop p) { return false; }
716 };
717
718 static AlwaysFalseClosure always_false;
719
720 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
721 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
722 CHECK_JNI_EXCEPTION(env);
723 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
724 MutexLockerEx mu(Compile_lock);
725 MethodData* mdo = mh->method_data();
726 MethodCounters* mcs = mh->method_counters();
727
728 if (mdo != NULL) {
729 mdo->init();
730 ResourceMark rm;
731 int arg_count = mdo->method()->size_of_parameters();
732 for (int i = 0; i < arg_count; i++) {
733 mdo->set_arg_modified(i, 0);
734 }
735 MutexLockerEx mu(mdo->extra_data_lock());
736 mdo->clean_method_data(&always_false);
737 }
738
739 mh->clear_not_c1_compilable();
740 mh->clear_not_c2_compilable();
741 mh->clear_not_c2_osr_compilable();
742 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
743 if (mcs != NULL) {
744 mcs->backedge_counter()->init();
745 mcs->invocation_counter()->init();
746 mcs->set_interpreter_invocation_count(0);
747 mcs->set_interpreter_throwout_count(0);
748
749 #ifdef TIERED
750 mcs->set_rate(0.0F);
751 mh->set_prev_event_count(0);
752 mh->set_prev_time(0);
753 #endif
754 }
755 WB_END
756
757 template <typename T>
758 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
759 if (name == NULL) {
760 return false;
761 }
762 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
763 const char* flag_name = env->GetStringUTFChars(name, NULL);
764 Flag::Error result = (*TAt)(flag_name, value, true, true);
765 env->ReleaseStringUTFChars(name, flag_name);
766 return (result == Flag::SUCCESS);
767 }
768
769 template <typename T>
770 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
771 if (name == NULL) {
772 return false;
773 }
774 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
775 const char* flag_name = env->GetStringUTFChars(name, NULL);
776 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
777 env->ReleaseStringUTFChars(name, flag_name);
778 return (result == Flag::SUCCESS);
779 }
780
781 template <typename T>
782 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
783 ResourceMark rm(thread);
784 jclass clazz = env->FindClass(name->as_C_string());
785 CHECK_JNI_EXCEPTION_(env, NULL);
786 jmethodID methodID = env->GetStaticMethodID(clazz,
787 vmSymbols::valueOf_name()->as_C_string(),
788 sig->as_C_string());
789 CHECK_JNI_EXCEPTION_(env, NULL);
790 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
791 CHECK_JNI_EXCEPTION_(env, NULL);
792 return result;
793 }
794
795 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
796 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
797 }
798 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
799 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
800 }
801 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
802 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
803 }
804 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
805 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
806 }*/
807 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
808 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
809 }
810
811 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
812 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
813 const char* flag_name = env->GetStringUTFChars(name, NULL);
814 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
815 env->ReleaseStringUTFChars(name, flag_name);
816 return result;
817 }
818
819 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
820 Flag* flag = getVMFlag(thread, env, name);
821 return (flag != NULL) && flag->is_constant_in_binary();
822 WB_END
823
824 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
825 Flag* flag = getVMFlag(thread, env, name);
826 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
827 WB_END
828
829 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
830 bool result;
831 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
832 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
833 return booleanBox(thread, env, result);
834 }
835 return NULL;
836 WB_END
837
838 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
839 int result;
840 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
841 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
842 return longBox(thread, env, result);
843 }
844 return NULL;
845 WB_END
846
847 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
848 uint result;
849 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
850 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
851 return longBox(thread, env, result);
852 }
853 return NULL;
854 WB_END
855
856 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
857 intx result;
858 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
859 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
860 return longBox(thread, env, result);
861 }
862 return NULL;
863 WB_END
864
865 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
866 uintx result;
867 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
868 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
869 return longBox(thread, env, result);
870 }
871 return NULL;
872 WB_END
873
874 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
875 uint64_t result;
876 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
877 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
878 return longBox(thread, env, result);
879 }
880 return NULL;
881 WB_END
882
883 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
884 uintx result;
885 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
886 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
887 return longBox(thread, env, result);
888 }
889 return NULL;
890 WB_END
891
892 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
893 double result;
894 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
895 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
896 return doubleBox(thread, env, result);
897 }
898 return NULL;
899 WB_END
900
901 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
902 ccstr ccstrResult;
903 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
904 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
905 jstring result = env->NewStringUTF(ccstrResult);
906 CHECK_JNI_EXCEPTION_(env, NULL);
907 return result;
908 }
909 return NULL;
910 WB_END
911
912 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
913 bool result = value == JNI_TRUE ? true : false;
914 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
915 WB_END
916
917 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
918 int result = value;
919 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
920 WB_END
921
922 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
923 uint result = value;
924 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
925 WB_END
926
927 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
928 intx result = value;
929 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
930 WB_END
931
932 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
933 uintx result = value;
934 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
935 WB_END
936
937 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
938 uint64_t result = value;
939 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
940 WB_END
941
942 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
943 size_t result = value;
944 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
945 WB_END
946
947 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
948 double result = value;
949 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
950 WB_END
951
952 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
953 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
954 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
955 ccstr ccstrResult = ccstrValue;
956 bool needFree;
957 {
958 ThreadInVMfromNative ttvfn(thread); // back to VM
959 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
960 }
961 if (value != NULL) {
962 env->ReleaseStringUTFChars(value, ccstrValue);
963 }
964 if (needFree) {
965 FREE_C_HEAP_ARRAY(char, ccstrResult);
966 }
967 WB_END
968
969 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
970 WhiteBox::compilation_locked = true;
971 WB_END
972
973 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
974 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
975 WhiteBox::compilation_locked = false;
976 mo.notify_all();
977 WB_END
978
979 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
980 // Force a code cache sweep and block until it finished
981 NMethodSweeper::force_sweep();
982 WB_END
983
984 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
985 ResourceMark rm(THREAD);
986 int len;
987 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
988 return (StringTable::lookup(name, len) != NULL);
989 WB_END
990
991 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
992 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
993 Universe::heap()->collect(GCCause::_last_ditch_collection);
994 #if INCLUDE_ALL_GCS
995 if (UseG1GC) {
996 // Needs to be cleared explicitly for G1
997 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
998 }
999 #endif // INCLUDE_ALL_GCS
1000 WB_END
1001
1002 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1003 Universe::heap()->collect(GCCause::_wb_young_gc);
1004 WB_END
1005
1006 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1007 // static+volatile in order to force the read to happen
1008 // (not be eliminated by the compiler)
1009 static char c;
1010 static volatile char* p;
1011
1012 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1013 if (p == NULL) {
1014 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1015 }
1016
1017 c = *p;
1018 WB_END
1019
1020 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1021 const char* features = VM_Version::features_string();
1022 ThreadToNativeFromVM ttn(thread);
1023 jstring features_string = env->NewStringUTF(features);
1024
1025 CHECK_JNI_EXCEPTION_(env, NULL);
1026
1027 return features_string;
1028 WB_END
1029
1030 int WhiteBox::get_blob_type(const CodeBlob* code) {
1031 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1032 return CodeCache::get_code_heap(code)->code_blob_type();
1033 }
1034
1035 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1036 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1037 return CodeCache::get_code_heap(blob_type);
1038 }
1039
1040 struct CodeBlobStub {
1041 CodeBlobStub(const CodeBlob* blob) :
1042 name(os::strdup(blob->name())),
1043 size(blob->size()),
1044 blob_type(WhiteBox::get_blob_type(blob)),
1045 address((jlong) blob) { }
1046 ~CodeBlobStub() { os::free((void*) name); }
1047 const char* const name;
1048 const jint size;
1049 const jint blob_type;
1050 const jlong address;
1051 };
1052
1053 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1054 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1055 CHECK_JNI_EXCEPTION_(env, NULL);
1056 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1057
1058 jstring name = env->NewStringUTF(cb->name);
1059 CHECK_JNI_EXCEPTION_(env, NULL);
1060 env->SetObjectArrayElement(result, 0, name);
1061
1062 jobject obj = integerBox(thread, env, cb->size);
1063 CHECK_JNI_EXCEPTION_(env, NULL);
1064 env->SetObjectArrayElement(result, 1, obj);
1065
1066 obj = integerBox(thread, env, cb->blob_type);
1067 CHECK_JNI_EXCEPTION_(env, NULL);
1068 env->SetObjectArrayElement(result, 2, obj);
1069
1070 obj = longBox(thread, env, cb->address);
1071 CHECK_JNI_EXCEPTION_(env, NULL);
1072 env->SetObjectArrayElement(result, 3, obj);
1073
1074 return result;
1075 }
1076
1077 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1078 ResourceMark rm(THREAD);
1079 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1080 CHECK_JNI_EXCEPTION_(env, NULL);
1081 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1082 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1083 jobjectArray result = NULL;
1084 if (code == NULL) {
1085 return result;
1086 }
1087 int insts_size = code->insts_size();
1088
1089 ThreadToNativeFromVM ttn(thread);
1090 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1091 CHECK_JNI_EXCEPTION_(env, NULL);
1092 result = env->NewObjectArray(5, clazz, NULL);
1093 if (result == NULL) {
1094 return result;
1095 }
1096
1097 CodeBlobStub stub(code);
1098 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1099 CHECK_JNI_EXCEPTION_(env, NULL);
1100 env->SetObjectArrayElement(result, 0, codeBlob);
1101
1102 jobject level = integerBox(thread, env, code->comp_level());
1103 CHECK_JNI_EXCEPTION_(env, NULL);
1104 env->SetObjectArrayElement(result, 1, level);
1105
1106 jbyteArray insts = env->NewByteArray(insts_size);
1107 CHECK_JNI_EXCEPTION_(env, NULL);
1108 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1109 env->SetObjectArrayElement(result, 2, insts);
1110
1111 jobject id = integerBox(thread, env, code->compile_id());
1112 CHECK_JNI_EXCEPTION_(env, NULL);
1113 env->SetObjectArrayElement(result, 3, id);
1114
1115 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1116 CHECK_JNI_EXCEPTION_(env, NULL);
1117 env->SetObjectArrayElement(result, 4, entry_point);
1118
1119 return result;
1120 WB_END
1121
1122 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1123 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1124 BufferBlob* blob;
1125 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1126 if (full_size < size) {
1127 full_size += round_to(size - full_size, oopSize);
1128 }
1129 {
1130 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1131 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1132 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1133 }
1134 // Track memory usage statistic after releasing CodeCache_lock
1135 MemoryService::track_code_cache_memory_usage();
1136 return blob;
1137 }
1138
1139 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1140 if (size < 0) {
1141 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1142 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1143 }
1144 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1145 WB_END
1146
1147 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1148 if (addr == 0) {
1149 return;
1150 }
1151 BufferBlob::free((BufferBlob*) addr);
1152 WB_END
1153
1154 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1155 ResourceMark rm;
1156 GrowableArray<CodeBlobStub*> blobs;
1157 {
1158 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1159 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1160 if (heap == NULL) {
1161 return NULL;
1162 }
1163 for (CodeBlob* cb = (CodeBlob*) heap->first();
1164 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1165 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1166 new (stub) CodeBlobStub(cb);
1167 blobs.append(stub);
1168 }
1169 }
1170 if (blobs.length() == 0) {
1171 return NULL;
1172 }
1173 ThreadToNativeFromVM ttn(thread);
1174 jobjectArray result = NULL;
1175 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1176 CHECK_JNI_EXCEPTION_(env, NULL);
1177 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1178 if (result == NULL) {
1179 return result;
1180 }
1181 int i = 0;
1182 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1183 it != blobs.end(); ++it) {
1184 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1185 CHECK_JNI_EXCEPTION_(env, NULL);
1186 env->SetObjectArrayElement(result, i, obj);
1187 ++i;
1188 }
1189 return result;
1190 WB_END
1191
1192 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1193 return CompileBroker::get_compilation_activity_mode();
1194 WB_END
1195
1196 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1197 if (addr == 0) {
1198 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1199 "WB_GetCodeBlob: addr is null");
1200 }
1201 ThreadToNativeFromVM ttn(thread);
1202 CodeBlobStub stub((CodeBlob*) addr);
1203 return codeBlob2objectArray(thread, env, &stub);
1204 WB_END
1205
1206 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1207 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1208 CHECK_JNI_EXCEPTION_(env, 0);
1209 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1210 return (jlong) mh->method_data();
1211 WB_END
1212
1213 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1214 return (jlong) Thread::current()->stack_size();
1215 WB_END
1216
1217 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1218 JavaThread* t = JavaThread::current();
1219 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1220 WB_END
1221
1222
1223 int WhiteBox::array_bytes_to_length(size_t bytes) {
1224 return Array<u1>::bytes_to_length(bytes);
1225 }
1226
1227 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1228 if (size < 0) {
1229 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1230 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1231 }
1232
1233 oop class_loader_oop = JNIHandles::resolve(class_loader);
1234 ClassLoaderData* cld = class_loader_oop != NULL
1235 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1236 : ClassLoaderData::the_null_class_loader_data();
1237
1238 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1239
1240 return (jlong)(uintptr_t)metadata;
1241 WB_END
1242
1243 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1244 oop class_loader_oop = JNIHandles::resolve(class_loader);
1245 ClassLoaderData* cld = class_loader_oop != NULL
1246 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1247 : ClassLoaderData::the_null_class_loader_data();
1248
1249 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1250 WB_END
1251
1252 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1253 if (inc < 0) {
1254 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1255 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1256 }
1257
1258 jlong max_size_t = (jlong) ((size_t) -1);
1259 if (inc > max_size_t) {
1260 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1261 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1262 }
1263
1264 size_t new_cap_until_GC = 0;
1265 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1266 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1267 if (!success) {
1268 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1269 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1270 "due to contention with another thread");
1271 }
1272 return (jlong) new_cap_until_GC;
1273 WB_END
1274
1275 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1276 return (jlong) MetaspaceGC::capacity_until_GC();
1277 WB_END
1278
1279
1280
1281 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1282 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1283 Monitor::_safepoint_check_always :
1284 Monitor::_safepoint_check_never;
1285 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1286 attemptedNoSafepointValue == JNI_TRUE);
1287 WB_END
1288
1289 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1290 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1291 WB_END
1292
1293 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1294 oop obj_oop = JNIHandles::resolve(obj);
1295 return (jboolean) obj_oop->mark()->has_monitor();
1296 WB_END
1297
1298 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1299 VM_ForceSafepoint force_safepoint_op;
1300 VMThread::execute(&force_safepoint_op);
1301 WB_END
1302
1303 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1304 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1305 return (jlong) ikh->constants();
1306 WB_END
1307
1308 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1309 return ConstantPool::CPCACHE_INDEX_TAG;
1310 WB_END
1311
1312 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1313 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1314 ConstantPool* cp = ikh->constants();
1315 if (cp->cache() == NULL) {
1316 return -1;
1317 }
1318 return cp->cache()->length();
1319 WB_END
1320
1321 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1322 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1323 ConstantPool* cp = ikh->constants();
1324 if (cp->cache() == NULL) {
1325 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1326 }
1327 jint cpci = index;
1328 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1329 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1330 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1331 }
1332 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1333 return cpi;
1334 WB_END
1335
1336 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1337 return ConstantPool::encode_invokedynamic_index(index);
1338 WB_END
1339
1340 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb))
1341 VM_ClearICs clear_ics;
1342 VMThread::execute(&clear_ics);
1343 WB_END
1344
1345 template <typename T>
1346 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1347 assert(value != NULL, "sanity");
1348 if (method == NULL || name == NULL) {
1349 return false;
1350 }
1351 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1352 CHECK_JNI_EXCEPTION_(env, false);
1353 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1354 // can't be in VM when we call JNI
1355 ThreadToNativeFromVM ttnfv(thread);
1356 const char* flag_name = env->GetStringUTFChars(name, NULL);
1357 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1358 env->ReleaseStringUTFChars(name, flag_name);
1359 return result;
1360 }
1361
1362 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1363 bool result;
1364 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1365 // can't be in VM when we call JNI
1366 ThreadToNativeFromVM ttnfv(thread);
1367 return booleanBox(thread, env, result);
1368 }
1369 return NULL;
1370 WB_END
1371
1372 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1373 intx result;
1374 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1375 // can't be in VM when we call JNI
1376 ThreadToNativeFromVM ttnfv(thread);
1377 return longBox(thread, env, result);
1378 }
1379 return NULL;
1380 WB_END
1381
1382 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1383 uintx result;
1384 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1385 // can't be in VM when we call JNI
1386 ThreadToNativeFromVM ttnfv(thread);
1387 return longBox(thread, env, result);
1388 }
1389 return NULL;
1390 WB_END
1391
1392 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1393 double result;
1394 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1395 // can't be in VM when we call JNI
1396 ThreadToNativeFromVM ttnfv(thread);
1397 return doubleBox(thread, env, result);
1398 }
1399 return NULL;
1400 WB_END
1401
1402 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1403 ccstr ccstrResult;
1404 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1405 // can't be in VM when we call JNI
1406 ThreadToNativeFromVM ttnfv(thread);
1407 jstring result = env->NewStringUTF(ccstrResult);
1408 CHECK_JNI_EXCEPTION_(env, NULL);
1409 return result;
1410 }
1411 return NULL;
1412 WB_END
1413
1414 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1415 oop obj_oop = JNIHandles::resolve(obj);
1416 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1417 WB_END
1418
1419 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1420 return StringTable::shared_string_ignored();
1421 WB_END
1422
1423 //Some convenience methods to deal with objects from java
1424 int WhiteBox::offset_for_field(const char* field_name, oop object,
1425 Symbol* signature_symbol) {
1426 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1427 Thread* THREAD = Thread::current();
1428
1429 //Get the class of our object
1430 Klass* arg_klass = object->klass();
1431 //Turn it into an instance-klass
1432 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1433
1434 //Create symbols to look for in the class
1435 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1436 THREAD);
1437
1438 //To be filled in with an offset of the field we're looking for
1439 fieldDescriptor fd;
1440
1441 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1442 if (res == NULL) {
1443 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1444 name_symbol->as_C_string());
1445 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class");
1446 }
1447
1448 //fetch the field at the offset we've found
1449 int dest_offset = fd.offset();
1450
1451 return dest_offset;
1452 }
1453
1454
1455 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1456 int offset = offset_for_field(field_name, object,
1457 vmSymbols::string_signature());
1458 oop string = object->obj_field(offset);
1459 if (string == NULL) {
1460 return NULL;
1461 }
1462 const char* ret = java_lang_String::as_utf8_string(string);
1463 return ret;
1464 }
1465
1466 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1467 int offset =
1468 offset_for_field(field_name, object, vmSymbols::bool_signature());
1469 bool ret = (object->bool_field(offset) == JNI_TRUE);
1470 return ret;
1471 }
1472
1473 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1474 ResourceMark rm;
1475 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1476
1477 // one by one registration natives for exception catching
1478 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1479 CHECK_JNI_EXCEPTION(env);
1480 for (int i = 0, n = method_count; i < n; ++i) {
1481 // Skip dummy entries
1482 if (method_array[i].fnPtr == NULL) continue;
1483 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1484 jthrowable throwable_obj = env->ExceptionOccurred();
1485 if (throwable_obj != NULL) {
1486 env->ExceptionClear();
1487 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1488 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1489 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1490 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1491 method_array[i].name, method_array[i].signature);
1492 }
1493 } else {
1494 // Registration failed unexpectedly.
1495 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1496 method_array[i].name, method_array[i].signature);
1497 env->UnregisterNatives(wbclass);
1498 break;
1499 }
1500 }
1501 }
1502 }
1503
1504 #define CC (char*)
1505
1506 static JNINativeMethod methods[] = {
1507 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1508 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1509 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1510 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1511 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1512 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1513 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1514 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1515 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1516 {CC"parseCommandLine0",
1517 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1518 (void*) &WB_ParseCommandLine
1519 },
1520 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1521 (void*)&WB_AddToBootstrapClassLoaderSearch},
1522 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1523 (void*)&WB_AddToSystemClassLoaderSearch},
1524 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1525 (void*)&WB_GetCompressedOopsMaxHeapSize},
1526 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1527 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1528 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1529 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1530 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1531 #if INCLUDE_ALL_GCS
1532 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1533 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z",(void*)&WB_G1IsHumongous },
1534 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1535 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1536 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1537 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1538 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1539 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1540 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1541 (void*)&WB_G1AuxiliaryMemoryUsage },
1542 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1543 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1544 #endif // INCLUDE_ALL_GCS
1545 #if INCLUDE_NMT
1546 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1547 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1548 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1549 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1550 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1551 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1552 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1553 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1554 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1555 #endif // INCLUDE_NMT
1556 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1557 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1558 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1559 (void*)&WB_DeoptimizeMethod },
1560 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1561 (void*)&WB_IsMethodCompiled },
1562 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1563 (void*)&WB_IsMethodCompilable},
1564 {CC"isMethodQueuedForCompilation0",
1565 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1566 {CC"isIntrinsicAvailable0",
1567 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1568 (void*)&WB_IsIntrinsicAvailable},
1569 {CC"makeMethodNotCompilable0",
1570 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1571 {CC"testSetDontInlineMethod0",
1572 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1573 {CC"getMethodCompilationLevel0",
1574 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1575 {CC"getMethodEntryBci0",
1576 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1577 {CC"getCompileQueueSize",
1578 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1579 {CC"testSetForceInlineMethod0",
1580 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1581 {CC"enqueueMethodForCompilation0",
1582 CC"(Ljava/lang/reflect/Executable;IIZ)Z", (void*)&WB_EnqueueMethodForCompilation},
1583 {CC"clearMethodState0",
1584 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1585 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1586 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1587 {CC"matchesMethod",
1588 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1589 (void*)&WB_MatchesMethod},
1590 {CC"matchesInline",
1591 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1592 (void*)&WB_MatchesInline},
1593 {CC"shouldPrintAssembly",
1594 CC"(Ljava/lang/reflect/Executable;I)Z",
1595 (void*)&WB_ShouldPrintAssembly},
1596
1597 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1598 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1599 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1600 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1601 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1602 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1603 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1604 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1605 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1606 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1607 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1608 (void*)&WB_SetStringVMFlag},
1609 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1610 (void*)&WB_GetBooleanVMFlag},
1611 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1612 (void*)&WB_GetIntVMFlag},
1613 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1614 (void*)&WB_GetUintVMFlag},
1615 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1616 (void*)&WB_GetIntxVMFlag},
1617 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1618 (void*)&WB_GetUintxVMFlag},
1619 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1620 (void*)&WB_GetUint64VMFlag},
1621 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1622 (void*)&WB_GetSizeTVMFlag},
1623 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1624 (void*)&WB_GetDoubleVMFlag},
1625 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1626 (void*)&WB_GetStringVMFlag},
1627 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1628 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1629 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1630 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1631 {CC"allocateMetaspace",
1632 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1633 {CC"freeMetaspace",
1634 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1635 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1636 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1637 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1638 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1639 (void*)&WB_GetNMethod },
1640 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1641 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1642 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1643 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1644 {CC"getCompilationActivityMode",
1645 CC"()I", (void*)&WB_GetCompilationActivityMode},
1646 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1647 (void*)&WB_GetMethodData },
1648 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1649 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1650 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1651 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1652 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1653 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1654 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
1655 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
1656 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
1657 {CC"remapInstructionOperandFromCPCache0",
1658 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
1659 {CC"encodeConstantPoolIndyIndex0",
1660 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
1661 {CC"getMethodBooleanOption",
1662 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1663 (void*)&WB_GetMethodBooleaneOption},
1664 {CC"getMethodIntxOption",
1665 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1666 (void*)&WB_GetMethodIntxOption},
1667 {CC"getMethodUintxOption",
1668 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1669 (void*)&WB_GetMethodUintxOption},
1670 {CC"getMethodDoubleOption",
1671 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1672 (void*)&WB_GetMethodDoubleOption},
1673 {CC"getMethodStringOption",
1674 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1675 (void*)&WB_GetMethodStringOption},
1676 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1677 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1678 {CC"clearInlineCaches", CC"()V", (void*)&WB_ClearInlineCaches },
1679 };
1680
1681 #undef CC
1682
1683 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1684 {
1685 if (WhiteBoxAPI) {
1686 // Make sure that wbclass is loaded by the null classloader
1687 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1688 Handle loader(ikh->class_loader());
1689 if (loader.is_null()) {
1690 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1691 WhiteBox::register_extended(env, wbclass, thread);
1692 WhiteBox::set_used();
1693 }
1694 }
1695 }
1696 JVM_END