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))
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", THREAD);
643 MutexLockerEx mu(Compile_lock);
644 return (mh->queued_for_compilation() || nm != NULL);
645 WB_END
646
647 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
648 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
649 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
650
651 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
652 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
653 bool result = directive->PrintAssemblyOption;
654 DirectivesStack::release(directive);
655
656 return result;
657 WB_END
658
659 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
660 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
661 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
662
663 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
664
665 ResourceMark rm;
666 const char* error_msg = NULL;
667 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
668 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
669
670 if (m == NULL) {
671 assert(error_msg != NULL, "Always have an error message");
672 tty->print_cr("Got error: %s", error_msg);
673 return -1; // Pattern failed
674 }
675
676 // Pattern works - now check if it matches
677 int result;
678 if (m->match(mh, InlineMatcher::force_inline)) {
679 result = 2; // Force inline match
680 } else if (m->match(mh, InlineMatcher::dont_inline)) {
681 result = 1; // Dont inline match
682 } else {
683 result = 0; // No match
684 }
685 delete m;
686 return result;
687 WB_END
688
689 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
690 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
691 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
692
693 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
694
695 ResourceMark rm;
696 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
697
698 const char* error_msg = NULL;
699
700 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
701 if (m == NULL) {
702 assert(error_msg != NULL, "Must have error_msg");
703 tty->print_cr("Got error: %s", error_msg);
704 return -1;
705 }
706
707 // Pattern works - now check if it matches
708 int result = m->matches(mh);
709 delete m;
710 assert(result == 0 || result == 1, "Result out of range");
711 return result;
712 WB_END
713
714 class AlwaysFalseClosure : public BoolObjectClosure {
715 public:
716 bool do_object_b(oop p) { return false; }
717 };
718
719 static AlwaysFalseClosure always_false;
720
721 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
722 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
723 CHECK_JNI_EXCEPTION(env);
724 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
725 MutexLockerEx mu(Compile_lock);
726 MethodData* mdo = mh->method_data();
727 MethodCounters* mcs = mh->method_counters();
728
729 if (mdo != NULL) {
730 mdo->init();
731 ResourceMark rm;
732 int arg_count = mdo->method()->size_of_parameters();
733 for (int i = 0; i < arg_count; i++) {
734 mdo->set_arg_modified(i, 0);
735 }
736 MutexLockerEx mu(mdo->extra_data_lock());
737 mdo->clean_method_data(&always_false);
738 }
739
740 mh->clear_not_c1_compilable();
741 mh->clear_not_c2_compilable();
742 mh->clear_not_c2_osr_compilable();
743 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
744 if (mcs != NULL) {
745 mcs->backedge_counter()->init();
746 mcs->invocation_counter()->init();
747 mcs->set_interpreter_invocation_count(0);
748 mcs->set_interpreter_throwout_count(0);
749
750 #ifdef TIERED
751 mcs->set_rate(0.0F);
752 mh->set_prev_event_count(0);
753 mh->set_prev_time(0);
754 #endif
755 }
756 WB_END
757
758 template <typename T>
759 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAt)(const char*, T*, bool, bool)) {
760 if (name == NULL) {
761 return false;
762 }
763 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
764 const char* flag_name = env->GetStringUTFChars(name, NULL);
765 Flag::Error result = (*TAt)(flag_name, value, true, true);
766 env->ReleaseStringUTFChars(name, flag_name);
767 return (result == Flag::SUCCESS);
768 }
769
770 template <typename T>
771 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, Flag::Error (*TAtPut)(const char*, T*, Flag::Flags)) {
772 if (name == NULL) {
773 return false;
774 }
775 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
776 const char* flag_name = env->GetStringUTFChars(name, NULL);
777 Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
778 env->ReleaseStringUTFChars(name, flag_name);
779 return (result == Flag::SUCCESS);
780 }
781
782 template <typename T>
783 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
784 ResourceMark rm(thread);
785 jclass clazz = env->FindClass(name->as_C_string());
786 CHECK_JNI_EXCEPTION_(env, NULL);
787 jmethodID methodID = env->GetStaticMethodID(clazz,
788 vmSymbols::valueOf_name()->as_C_string(),
789 sig->as_C_string());
790 CHECK_JNI_EXCEPTION_(env, NULL);
791 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
792 CHECK_JNI_EXCEPTION_(env, NULL);
793 return result;
794 }
795
796 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
797 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
798 }
799 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
800 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
801 }
802 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
803 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
804 }
805 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
806 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
807 }*/
808 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
809 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
810 }
811
812 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
813 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
814 const char* flag_name = env->GetStringUTFChars(name, NULL);
815 Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
816 env->ReleaseStringUTFChars(name, flag_name);
817 return result;
818 }
819
820 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
821 Flag* flag = getVMFlag(thread, env, name);
822 return (flag != NULL) && flag->is_constant_in_binary();
823 WB_END
824
825 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
826 Flag* flag = getVMFlag(thread, env, name);
827 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
828 WB_END
829
830 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
831 bool result;
832 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
833 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
834 return booleanBox(thread, env, result);
835 }
836 return NULL;
837 WB_END
838
839 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
840 int result;
841 if (GetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAt)) {
842 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
843 return longBox(thread, env, result);
844 }
845 return NULL;
846 WB_END
847
848 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
849 uint result;
850 if (GetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAt)) {
851 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
852 return longBox(thread, env, result);
853 }
854 return NULL;
855 WB_END
856
857 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
858 intx result;
859 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
860 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
861 return longBox(thread, env, result);
862 }
863 return NULL;
864 WB_END
865
866 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
867 uintx result;
868 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
869 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
870 return longBox(thread, env, result);
871 }
872 return NULL;
873 WB_END
874
875 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
876 uint64_t result;
877 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
878 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
879 return longBox(thread, env, result);
880 }
881 return NULL;
882 WB_END
883
884 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
885 uintx result;
886 if (GetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAt)) {
887 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
888 return longBox(thread, env, result);
889 }
890 return NULL;
891 WB_END
892
893 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
894 double result;
895 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
896 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
897 return doubleBox(thread, env, result);
898 }
899 return NULL;
900 WB_END
901
902 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
903 ccstr ccstrResult;
904 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
905 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
906 jstring result = env->NewStringUTF(ccstrResult);
907 CHECK_JNI_EXCEPTION_(env, NULL);
908 return result;
909 }
910 return NULL;
911 WB_END
912
913 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
914 bool result = value == JNI_TRUE ? true : false;
915 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
916 WB_END
917
918 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
919 int result = value;
920 SetVMFlag <int> (thread, env, name, &result, &CommandLineFlags::intAtPut);
921 WB_END
922
923 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
924 uint result = value;
925 SetVMFlag <uint> (thread, env, name, &result, &CommandLineFlags::uintAtPut);
926 WB_END
927
928 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
929 intx result = value;
930 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
931 WB_END
932
933 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
934 uintx result = value;
935 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
936 WB_END
937
938 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
939 uint64_t result = value;
940 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
941 WB_END
942
943 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
944 size_t result = value;
945 SetVMFlag <size_t> (thread, env, name, &result, &CommandLineFlags::size_tAtPut);
946 WB_END
947
948 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
949 double result = value;
950 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
951 WB_END
952
953 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
954 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
955 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
956 ccstr ccstrResult = ccstrValue;
957 bool needFree;
958 {
959 ThreadInVMfromNative ttvfn(thread); // back to VM
960 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
961 }
962 if (value != NULL) {
963 env->ReleaseStringUTFChars(value, ccstrValue);
964 }
965 if (needFree) {
966 FREE_C_HEAP_ARRAY(char, ccstrResult);
967 }
968 WB_END
969
970 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
971 WhiteBox::compilation_locked = true;
972 WB_END
973
974 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
975 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
976 WhiteBox::compilation_locked = false;
977 mo.notify_all();
978 WB_END
979
980 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
981 // Force a code cache sweep and block until it finished
982 NMethodSweeper::force_sweep();
983 WB_END
984
985 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
986 ResourceMark rm(THREAD);
987 int len;
988 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
989 return (StringTable::lookup(name, len) != NULL);
990 WB_END
991
992 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
993 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
994 Universe::heap()->collect(GCCause::_last_ditch_collection);
995 #if INCLUDE_ALL_GCS
996 if (UseG1GC) {
997 // Needs to be cleared explicitly for G1
998 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
999 }
1000 #endif // INCLUDE_ALL_GCS
1001 WB_END
1002
1003 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1004 Universe::heap()->collect(GCCause::_wb_young_gc);
1005 WB_END
1006
1007 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1008 // static+volatile in order to force the read to happen
1009 // (not be eliminated by the compiler)
1010 static char c;
1011 static volatile char* p;
1012
1013 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1014 if (p == NULL) {
1015 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1016 }
1017
1018 c = *p;
1019 WB_END
1020
1021 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1022 const char* features = VM_Version::features_string();
1023 ThreadToNativeFromVM ttn(thread);
1024 jstring features_string = env->NewStringUTF(features);
1025
1026 CHECK_JNI_EXCEPTION_(env, NULL);
1027
1028 return features_string;
1029 WB_END
1030
1031 int WhiteBox::get_blob_type(const CodeBlob* code) {
1032 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1033 return CodeCache::get_code_heap(code)->code_blob_type();
1034 }
1035
1036 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1037 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1038 return CodeCache::get_code_heap(blob_type);
1039 }
1040
1041 struct CodeBlobStub {
1042 CodeBlobStub(const CodeBlob* blob) :
1043 name(os::strdup(blob->name())),
1044 size(blob->size()),
1045 blob_type(WhiteBox::get_blob_type(blob)),
1046 address((jlong) blob) { }
1047 ~CodeBlobStub() { os::free((void*) name); }
1048 const char* const name;
1049 const jint size;
1050 const jint blob_type;
1051 const jlong address;
1052 };
1053
1054 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1055 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1056 CHECK_JNI_EXCEPTION_(env, NULL);
1057 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1058
1059 jstring name = env->NewStringUTF(cb->name);
1060 CHECK_JNI_EXCEPTION_(env, NULL);
1061 env->SetObjectArrayElement(result, 0, name);
1062
1063 jobject obj = integerBox(thread, env, cb->size);
1064 CHECK_JNI_EXCEPTION_(env, NULL);
1065 env->SetObjectArrayElement(result, 1, obj);
1066
1067 obj = integerBox(thread, env, cb->blob_type);
1068 CHECK_JNI_EXCEPTION_(env, NULL);
1069 env->SetObjectArrayElement(result, 2, obj);
1070
1071 obj = longBox(thread, env, cb->address);
1072 CHECK_JNI_EXCEPTION_(env, NULL);
1073 env->SetObjectArrayElement(result, 3, obj);
1074
1075 return result;
1076 }
1077
1078 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1079 ResourceMark rm(THREAD);
1080 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1081 CHECK_JNI_EXCEPTION_(env, NULL);
1082 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1083 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1084 jobjectArray result = NULL;
1085 if (code == NULL) {
1086 return result;
1087 }
1088 int insts_size = code->insts_size();
1089
1090 ThreadToNativeFromVM ttn(thread);
1091 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1092 CHECK_JNI_EXCEPTION_(env, NULL);
1093 result = env->NewObjectArray(5, clazz, NULL);
1094 if (result == NULL) {
1095 return result;
1096 }
1097
1098 CodeBlobStub stub(code);
1099 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1100 CHECK_JNI_EXCEPTION_(env, NULL);
1101 env->SetObjectArrayElement(result, 0, codeBlob);
1102
1103 jobject level = integerBox(thread, env, code->comp_level());
1104 CHECK_JNI_EXCEPTION_(env, NULL);
1105 env->SetObjectArrayElement(result, 1, level);
1106
1107 jbyteArray insts = env->NewByteArray(insts_size);
1108 CHECK_JNI_EXCEPTION_(env, NULL);
1109 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1110 env->SetObjectArrayElement(result, 2, insts);
1111
1112 jobject id = integerBox(thread, env, code->compile_id());
1113 CHECK_JNI_EXCEPTION_(env, NULL);
1114 env->SetObjectArrayElement(result, 3, id);
1115
1116 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1117 CHECK_JNI_EXCEPTION_(env, NULL);
1118 env->SetObjectArrayElement(result, 4, entry_point);
1119
1120 return result;
1121 WB_END
1122
1123 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1124 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1125 BufferBlob* blob;
1126 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1127 if (full_size < size) {
1128 full_size += round_to(size - full_size, oopSize);
1129 }
1130 {
1131 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1132 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1133 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1134 }
1135 // Track memory usage statistic after releasing CodeCache_lock
1136 MemoryService::track_code_cache_memory_usage();
1137 return blob;
1138 }
1139
1140 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1141 if (size < 0) {
1142 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1143 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1144 }
1145 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1146 WB_END
1147
1148 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1149 if (addr == 0) {
1150 return;
1151 }
1152 BufferBlob::free((BufferBlob*) addr);
1153 WB_END
1154
1155 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1156 ResourceMark rm;
1157 GrowableArray<CodeBlobStub*> blobs;
1158 {
1159 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1160 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1161 if (heap == NULL) {
1162 return NULL;
1163 }
1164 for (CodeBlob* cb = (CodeBlob*) heap->first();
1165 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1166 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1167 new (stub) CodeBlobStub(cb);
1168 blobs.append(stub);
1169 }
1170 }
1171 if (blobs.length() == 0) {
1172 return NULL;
1173 }
1174 ThreadToNativeFromVM ttn(thread);
1175 jobjectArray result = NULL;
1176 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1177 CHECK_JNI_EXCEPTION_(env, NULL);
1178 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1179 if (result == NULL) {
1180 return result;
1181 }
1182 int i = 0;
1183 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1184 it != blobs.end(); ++it) {
1185 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1186 CHECK_JNI_EXCEPTION_(env, NULL);
1187 env->SetObjectArrayElement(result, i, obj);
1188 ++i;
1189 }
1190 return result;
1191 WB_END
1192
1193 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1194 return CompileBroker::get_compilation_activity_mode();
1195 WB_END
1196
1197 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1198 if (addr == 0) {
1199 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1200 "WB_GetCodeBlob: addr is null");
1201 }
1202 ThreadToNativeFromVM ttn(thread);
1203 CodeBlobStub stub((CodeBlob*) addr);
1204 return codeBlob2objectArray(thread, env, &stub);
1205 WB_END
1206
1207 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1208 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1209 CHECK_JNI_EXCEPTION_(env, 0);
1210 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1211 return (jlong) mh->method_data();
1212 WB_END
1213
1214 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1215 return (jlong) Thread::current()->stack_size();
1216 WB_END
1217
1218 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1219 JavaThread* t = JavaThread::current();
1220 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1221 WB_END
1222
1223
1224 int WhiteBox::array_bytes_to_length(size_t bytes) {
1225 return Array<u1>::bytes_to_length(bytes);
1226 }
1227
1228 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1229 if (size < 0) {
1230 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1231 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1232 }
1233
1234 oop class_loader_oop = JNIHandles::resolve(class_loader);
1235 ClassLoaderData* cld = class_loader_oop != NULL
1236 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1237 : ClassLoaderData::the_null_class_loader_data();
1238
1239 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1240
1241 return (jlong)(uintptr_t)metadata;
1242 WB_END
1243
1244 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1245 oop class_loader_oop = JNIHandles::resolve(class_loader);
1246 ClassLoaderData* cld = class_loader_oop != NULL
1247 ? java_lang_ClassLoader::loader_data(class_loader_oop)
1248 : ClassLoaderData::the_null_class_loader_data();
1249
1250 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1251 WB_END
1252
1253 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1254 if (inc < 0) {
1255 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1256 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1257 }
1258
1259 jlong max_size_t = (jlong) ((size_t) -1);
1260 if (inc > max_size_t) {
1261 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1262 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1263 }
1264
1265 size_t new_cap_until_GC = 0;
1266 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
1267 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1268 if (!success) {
1269 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1270 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1271 "due to contention with another thread");
1272 }
1273 return (jlong) new_cap_until_GC;
1274 WB_END
1275
1276 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1277 return (jlong) MetaspaceGC::capacity_until_GC();
1278 WB_END
1279
1280
1281
1282 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1283 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1284 Monitor::_safepoint_check_always :
1285 Monitor::_safepoint_check_never;
1286 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1287 attemptedNoSafepointValue == JNI_TRUE);
1288 WB_END
1289
1290 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1291 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1292 WB_END
1293
1294 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1295 oop obj_oop = JNIHandles::resolve(obj);
1296 return (jboolean) obj_oop->mark()->has_monitor();
1297 WB_END
1298
1299 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1300 VM_ForceSafepoint force_safepoint_op;
1301 VMThread::execute(&force_safepoint_op);
1302 WB_END
1303
1304 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1305 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1306 return (jlong) ikh->constants();
1307 WB_END
1308
1309 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1310 return ConstantPool::CPCACHE_INDEX_TAG;
1311 WB_END
1312
1313 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1314 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1315 ConstantPool* cp = ikh->constants();
1316 if (cp->cache() == NULL) {
1317 return -1;
1318 }
1319 return cp->cache()->length();
1320 WB_END
1321
1322 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1323 instanceKlassHandle ikh(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1324 ConstantPool* cp = ikh->constants();
1325 if (cp->cache() == NULL) {
1326 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1327 }
1328 jint cpci = index;
1329 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1330 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1331 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1332 }
1333 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1334 return cpi;
1335 WB_END
1336
1337 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1338 return ConstantPool::encode_invokedynamic_index(index);
1339 WB_END
1340
1341 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb))
1342 VM_ClearICs clear_ics;
1343 VMThread::execute(&clear_ics);
1344 WB_END
1345
1346 template <typename T>
1347 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1348 assert(value != NULL, "sanity");
1349 if (method == NULL || name == NULL) {
1350 return false;
1351 }
1352 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1353 CHECK_JNI_EXCEPTION_(env, false);
1354 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1355 // can't be in VM when we call JNI
1356 ThreadToNativeFromVM ttnfv(thread);
1357 const char* flag_name = env->GetStringUTFChars(name, NULL);
1358 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1359 env->ReleaseStringUTFChars(name, flag_name);
1360 return result;
1361 }
1362
1363 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1364 bool result;
1365 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1366 // can't be in VM when we call JNI
1367 ThreadToNativeFromVM ttnfv(thread);
1368 return booleanBox(thread, env, result);
1369 }
1370 return NULL;
1371 WB_END
1372
1373 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1374 intx result;
1375 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1376 // can't be in VM when we call JNI
1377 ThreadToNativeFromVM ttnfv(thread);
1378 return longBox(thread, env, result);
1379 }
1380 return NULL;
1381 WB_END
1382
1383 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1384 uintx result;
1385 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1386 // can't be in VM when we call JNI
1387 ThreadToNativeFromVM ttnfv(thread);
1388 return longBox(thread, env, result);
1389 }
1390 return NULL;
1391 WB_END
1392
1393 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1394 double result;
1395 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1396 // can't be in VM when we call JNI
1397 ThreadToNativeFromVM ttnfv(thread);
1398 return doubleBox(thread, env, result);
1399 }
1400 return NULL;
1401 WB_END
1402
1403 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1404 ccstr ccstrResult;
1405 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1406 // can't be in VM when we call JNI
1407 ThreadToNativeFromVM ttnfv(thread);
1408 jstring result = env->NewStringUTF(ccstrResult);
1409 CHECK_JNI_EXCEPTION_(env, NULL);
1410 return result;
1411 }
1412 return NULL;
1413 WB_END
1414
1415 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1416 oop obj_oop = JNIHandles::resolve(obj);
1417 return MetaspaceShared::is_in_shared_space((void*)obj_oop);
1418 WB_END
1419
1420 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1421 return StringTable::shared_string_ignored();
1422 WB_END
1423
1424 //Some convenience methods to deal with objects from java
1425 int WhiteBox::offset_for_field(const char* field_name, oop object,
1426 Symbol* signature_symbol) {
1427 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1428 Thread* THREAD = Thread::current();
1429
1430 //Get the class of our object
1431 Klass* arg_klass = object->klass();
1432 //Turn it into an instance-klass
1433 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1434
1435 //Create symbols to look for in the class
1436 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1437 THREAD);
1438
1439 //To be filled in with an offset of the field we're looking for
1440 fieldDescriptor fd;
1441
1442 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1443 if (res == NULL) {
1444 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1445 name_symbol->as_C_string());
1446 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class");
1447 }
1448
1449 //fetch the field at the offset we've found
1450 int dest_offset = fd.offset();
1451
1452 return dest_offset;
1453 }
1454
1455
1456 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1457 int offset = offset_for_field(field_name, object,
1458 vmSymbols::string_signature());
1459 oop string = object->obj_field(offset);
1460 if (string == NULL) {
1461 return NULL;
1462 }
1463 const char* ret = java_lang_String::as_utf8_string(string);
1464 return ret;
1465 }
1466
1467 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1468 int offset =
1469 offset_for_field(field_name, object, vmSymbols::bool_signature());
1470 bool ret = (object->bool_field(offset) == JNI_TRUE);
1471 return ret;
1472 }
1473
1474 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1475 ResourceMark rm;
1476 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1477
1478 // one by one registration natives for exception catching
1479 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1480 CHECK_JNI_EXCEPTION(env);
1481 for (int i = 0, n = method_count; i < n; ++i) {
1482 // Skip dummy entries
1483 if (method_array[i].fnPtr == NULL) continue;
1484 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1485 jthrowable throwable_obj = env->ExceptionOccurred();
1486 if (throwable_obj != NULL) {
1487 env->ExceptionClear();
1488 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1489 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1490 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1491 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1492 method_array[i].name, method_array[i].signature);
1493 }
1494 } else {
1495 // Registration failed unexpectedly.
1496 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1497 method_array[i].name, method_array[i].signature);
1498 env->UnregisterNatives(wbclass);
1499 break;
1500 }
1501 }
1502 }
1503 }
1504
1505 #define CC (char*)
1506
1507 static JNINativeMethod methods[] = {
1508 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1509 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1510 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1511 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1512 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1513 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
1514 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1515 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
1516 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1517 {CC"parseCommandLine0",
1518 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1519 (void*) &WB_ParseCommandLine
1520 },
1521 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1522 (void*)&WB_AddToBootstrapClassLoaderSearch},
1523 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
1524 (void*)&WB_AddToSystemClassLoaderSearch},
1525 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1526 (void*)&WB_GetCompressedOopsMaxHeapSize},
1527 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1528 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1529 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1530 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1531 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1532 #if INCLUDE_ALL_GCS
1533 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1534 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z",(void*)&WB_G1IsHumongous },
1535 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
1536 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
1537 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1538 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1539 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1540 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1541 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1542 (void*)&WB_G1AuxiliaryMemoryUsage },
1543 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
1544 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
1545 #endif // INCLUDE_ALL_GCS
1546 #if INCLUDE_NMT
1547 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1548 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1549 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1550 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1551 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1552 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1553 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1554 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1555 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1556 #endif // INCLUDE_NMT
1557 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
1558 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1559 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
1560 (void*)&WB_DeoptimizeMethod },
1561 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
1562 (void*)&WB_IsMethodCompiled },
1563 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1564 (void*)&WB_IsMethodCompilable},
1565 {CC"isMethodQueuedForCompilation0",
1566 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1567 {CC"isIntrinsicAvailable0",
1568 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
1569 (void*)&WB_IsIntrinsicAvailable},
1570 {CC"makeMethodNotCompilable0",
1571 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1572 {CC"testSetDontInlineMethod0",
1573 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1574 {CC"getMethodCompilationLevel0",
1575 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1576 {CC"getMethodEntryBci0",
1577 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1578 {CC"getCompileQueueSize",
1579 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1580 {CC"testSetForceInlineMethod0",
1581 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1582 {CC"enqueueMethodForCompilation0",
1583 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1584 {CC"clearMethodState0",
1585 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1586 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
1587 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
1588 {CC"matchesMethod",
1589 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1590 (void*)&WB_MatchesMethod},
1591 {CC"matchesInline",
1592 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
1593 (void*)&WB_MatchesInline},
1594 {CC"shouldPrintAssembly",
1595 CC"(Ljava/lang/reflect/Executable;I)Z",
1596 (void*)&WB_ShouldPrintAssembly},
1597
1598 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
1599 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
1600 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1601 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
1602 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
1603 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1604 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1605 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1606 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
1607 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1608 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1609 (void*)&WB_SetStringVMFlag},
1610 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1611 (void*)&WB_GetBooleanVMFlag},
1612 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1613 (void*)&WB_GetIntVMFlag},
1614 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1615 (void*)&WB_GetUintVMFlag},
1616 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1617 (void*)&WB_GetIntxVMFlag},
1618 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1619 (void*)&WB_GetUintxVMFlag},
1620 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1621 (void*)&WB_GetUint64VMFlag},
1622 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1623 (void*)&WB_GetSizeTVMFlag},
1624 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1625 (void*)&WB_GetDoubleVMFlag},
1626 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1627 (void*)&WB_GetStringVMFlag},
1628 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1629 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1630 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1631 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1632 {CC"allocateMetaspace",
1633 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1634 {CC"freeMetaspace",
1635 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1636 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1637 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1638 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1639 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1640 (void*)&WB_GetNMethod },
1641 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
1642 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
1643 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
1644 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
1645 {CC"getCompilationActivityMode",
1646 CC"()I", (void*)&WB_GetCompilationActivityMode},
1647 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
1648 (void*)&WB_GetMethodData },
1649 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
1650 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
1651 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
1652 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
1653 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1654 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1655 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
1656 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
1657 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
1658 {CC"remapInstructionOperandFromCPCache0",
1659 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
1660 {CC"encodeConstantPoolIndyIndex0",
1661 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
1662 {CC"getMethodBooleanOption",
1663 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
1664 (void*)&WB_GetMethodBooleaneOption},
1665 {CC"getMethodIntxOption",
1666 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1667 (void*)&WB_GetMethodIntxOption},
1668 {CC"getMethodUintxOption",
1669 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
1670 (void*)&WB_GetMethodUintxOption},
1671 {CC"getMethodDoubleOption",
1672 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
1673 (void*)&WB_GetMethodDoubleOption},
1674 {CC"getMethodStringOption",
1675 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
1676 (void*)&WB_GetMethodStringOption},
1677 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
1678 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
1679 {CC"clearInlineCaches", CC"()V", (void*)&WB_ClearInlineCaches },
1680 };
1681
1682 #undef CC
1683
1684 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1685 {
1686 if (WhiteBoxAPI) {
1687 // Make sure that wbclass is loaded by the null classloader
1688 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1689 Handle loader(ikh->class_loader());
1690 if (loader.is_null()) {
1691 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1692 WhiteBox::register_extended(env, wbclass, thread);
1693 WhiteBox::set_used();
1694 }
1695 }
1696 }
1697 JVM_END