1 /*
2 * Copyright (c) 2012, 2018, 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 "memory/metadataFactory.hpp"
28 #include "memory/metaspaceShared.hpp"
29 #include "memory/universe.hpp"
30 #include "oops/oop.inline.hpp"
31
32 #include "classfile/symbolTable.hpp"
33 #include "classfile/classLoaderData.hpp"
34
35 #include "prims/whitebox.hpp"
36 #include "prims/wbtestmethods/parserTests.hpp"
37
38 #include "runtime/arguments.hpp"
39 #include "runtime/interfaceSupport.hpp"
40 #include "runtime/os.hpp"
41 #include "utilities/array.hpp"
42 #include "utilities/debug.hpp"
43 #include "utilities/macros.hpp"
44 #include "utilities/exceptions.hpp"
45
46 #if INCLUDE_ALL_GCS
47 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp"
48 #include "gc_implementation/g1/concurrentMark.hpp"
49 #include "gc_implementation/g1/concurrentMarkThread.hpp"
50 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
51 #include "gc_implementation/g1/heapRegionRemSet.hpp"
52 #endif // INCLUDE_ALL_GCS
53
54 #if INCLUDE_NMT
55 #include "services/mallocSiteTable.hpp"
56 #include "services/memTracker.hpp"
57 #include "utilities/nativeCallStack.hpp"
58 #endif // INCLUDE_NMT
59
60 #include "compiler/compileBroker.hpp"
61 #include "jvmtifiles/jvmtiEnv.hpp"
62 #include "runtime/compilationPolicy.hpp"
63
64 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
65
66 #define SIZE_T_MAX_VALUE ((size_t) -1)
67
68 bool WhiteBox::_used = false;
69
70 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
71 return (jlong)(void*)JNIHandles::resolve(obj);
72 WB_END
73
74 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
75 return heapOopSize;
76 WB_END
77
78 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
79 return os::vm_page_size();
80 WB_END
81
82 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
83 return os::large_page_size();
84 WB_END
85
86 class WBIsKlassAliveClosure : public KlassClosure {
87 Symbol* _name;
88 bool _found;
89 public:
90 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
91
92 void do_klass(Klass* k) {
93 if (_found) return;
94 Symbol* ksym = k->name();
95 if (ksym->fast_compare(_name) == 0) {
96 _found = true;
97 }
98 }
99
100 bool found() const {
101 return _found;
102 }
103 };
104
105 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
106 Handle h_name = JNIHandles::resolve(name);
107 if (h_name.is_null()) return false;
108 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
109 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
110
111 WBIsKlassAliveClosure closure(sym);
112 ClassLoaderDataGraph::classes_do(&closure);
113
114 return closure.found();
115 WB_END
116
117 WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name))
118 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
119 const char* class_name = env->GetStringUTFChars(name, NULL);
120 jboolean result = JVM_KnownToNotExist(env, loader, class_name);
121 env->ReleaseStringUTFChars(name, class_name);
122 return result;
123 WB_END
124
125 WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader))
126 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
127 return JVM_GetResourceLookupCacheURLs(env, loader);
128 WB_END
129
130 WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name))
131 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
132 const char* resource_name = env->GetStringUTFChars(name, NULL);
133 jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name);
134
135 env->ReleaseStringUTFChars(name, resource_name);
136 return result;
137 WB_END
138
139 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
140 #if INCLUDE_JVMTI
141 ResourceMark rm;
142 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
143 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
144 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
145 assert(err == JVMTI_ERROR_NONE, "must not fail");
146 #endif
147 }
148 WB_END
149
150 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
151 #if INCLUDE_JVMTI
152 ResourceMark rm;
153 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
154 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
155 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
156 assert(err == JVMTI_ERROR_NONE, "must not fail");
157 #endif
158 }
159 WB_END
160
161 #ifdef LINUX
162 #include "utilities/elfFile.hpp"
163 #endif
164
165 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
166 return (jlong)Arguments::max_heap_for_compressed_oops();
167 }
168 WB_END
169
170 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
171 CollectorPolicy * p = Universe::heap()->collector_policy();
172 gclog_or_tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
173 SIZE_FORMAT" Maximum heap " SIZE_FORMAT " Min alignment " SIZE_FORMAT " Max alignment " SIZE_FORMAT,
174 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
175 p->space_alignment(), p->heap_alignment());
176 }
177 WB_END
178
179 #ifndef PRODUCT
180 // Forward declaration
181 void TestReservedSpace_test();
182 void TestReserveMemorySpecial_test();
183 void TestVirtualSpace_test();
184 void TestMetaspaceAux_test();
185 #endif
186
187 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
188 #ifndef PRODUCT
189 TestReservedSpace_test();
190 TestReserveMemorySpecial_test();
191 TestVirtualSpace_test();
192 TestMetaspaceAux_test();
193 #endif
194 WB_END
195
196 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
197 size_t granularity = os::vm_allocation_granularity();
198 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
199 VirtualSpace vs;
200 vs.initialize(rhs, 50 * granularity);
201
202 //Check if constraints are complied
203 if (!( UseCompressedOops && rhs.base() != NULL &&
204 Universe::narrow_oop_base() != NULL &&
205 Universe::narrow_oop_use_implicit_null_checks() )) {
206 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
207 "\tUseCompressedOops is %d\n"
208 "\trhs.base() is " PTR_FORMAT "\n"
209 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
210 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
211 UseCompressedOops,
212 rhs.base(),
213 Universe::narrow_oop_base(),
214 Universe::narrow_oop_use_implicit_null_checks());
215 return;
216 }
217 tty->print_cr("Reading from no access area... ");
218 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
219 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
220 WB_END
221
222 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
223 size_t magnitude, size_t iterations) {
224 size_t granularity = os::vm_allocation_granularity();
225 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
226 VirtualSpace vs;
227 if (!vs.initialize(rhs, 0)) {
228 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
229 return 3;
230 }
231
232 long seed = os::random();
233 tty->print_cr("Random seed is %ld", seed);
234 os::init_random(seed);
235
236 for (size_t i = 0; i < iterations; i++) {
237
238 // Whether we will shrink or grow
239 bool shrink = os::random() % 2L == 0;
240
241 // Get random delta to resize virtual space
242 size_t delta = (size_t)os::random() % magnitude;
243
244 // If we are about to shrink virtual space below zero, then expand instead
245 if (shrink && vs.committed_size() < delta) {
246 shrink = false;
247 }
248
249 // Resizing by delta
250 if (shrink) {
251 vs.shrink_by(delta);
252 } else {
253 // If expanding fails expand_by will silently return false
254 vs.expand_by(delta, true);
255 }
256 }
257 return 0;
258 }
259
260 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
261 jlong reserved_space_size, jlong magnitude, jlong iterations))
262 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
263 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
264 iterations);
265 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
266 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
267 return 1;
268 }
269
270 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
271 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
272 if (sizeof(size_t) < sizeof(jlong)) {
273 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
274 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
275 || iterations > size_t_max_value) {
276 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
277 return 2;
278 }
279 }
280
281 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
282 (size_t) magnitude, (size_t) iterations);
283 WB_END
284
285 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
286 oop p = JNIHandles::resolve(obj);
287 #if INCLUDE_ALL_GCS
288 if (UseG1GC) {
289 G1CollectedHeap* g1 = G1CollectedHeap::heap();
290 const HeapRegion* hr = g1->heap_region_containing(p);
291 if (hr == NULL) {
292 return false;
293 }
294 return !(hr->is_young());
295 } else if (UseParallelGC) {
296 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
297 return !psh->is_in_young(p);
298 }
299 #endif // INCLUDE_ALL_GCS
300 GenCollectedHeap* gch = GenCollectedHeap::heap();
301 return !gch->is_in_young(p);
302 WB_END
303
304 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
305 oop p = JNIHandles::resolve(obj);
306 return p->size() * HeapWordSize;
307 WB_END
308
309 #if INCLUDE_ALL_GCS
310 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
311 G1CollectedHeap* g1 = G1CollectedHeap::heap();
312 oop result = JNIHandles::resolve(obj);
313 const HeapRegion* hr = g1->heap_region_containing(result);
314 return hr->isHumongous();
315 WB_END
316
317 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
318 G1CollectedHeap* g1 = G1CollectedHeap::heap();
319 size_t nr = g1->max_regions();
320 return (jlong)nr;
321 WB_END
322
323 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
324 G1CollectedHeap* g1 = G1CollectedHeap::heap();
325 size_t nr = g1->num_free_regions();
326 return (jlong)nr;
327 WB_END
328
329 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
330 G1CollectedHeap* g1 = G1CollectedHeap::heap();
331 return g1->concurrent_mark()->cmThread()->during_cycle();
332 WB_END
333
334 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
335 G1CollectedHeap* g1h = G1CollectedHeap::heap();
336 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
337 g1h->collect(GCCause::_wb_conc_mark);
338 return true;
339 }
340 return false;
341 WB_END
342
343 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
344 return (jint)HeapRegion::GrainBytes;
345 WB_END
346
347 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
348 ResourceMark rm(THREAD);
349 G1CollectedHeap* g1h = G1CollectedHeap::heap();
350 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
351 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
352 return JNIHandles::make_local(env, h());
353 WB_END
354 #endif // INCLUDE_ALL_GCS
355
356 #if INCLUDE_NMT
357 // Alloc memory using the test memory type so that we can use that to see if
358 // NMT picks it up correctly
359 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
360 jlong addr = 0;
361 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
362 return addr;
363 WB_END
364
365 // Alloc memory with pseudo call stack. The test can create psudo malloc
366 // allocation site to stress the malloc tracking.
367 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
368 address pc = (address)(size_t)pseudo_stack;
369 NativeCallStack stack(&pc, 1);
370 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
371 WB_END
372
373 // Free the memory allocated by NMTAllocTest
374 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
375 os::free((void*)(uintptr_t)mem, mtTest);
376 WB_END
377
378 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
379 jlong addr = 0;
380
381 addr = (jlong)(uintptr_t)os::reserve_memory(size);
382 MemTracker::record_virtual_memory_type((address)addr, mtTest);
383
384 return addr;
385 WB_END
386
387
388 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
389 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
390 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
391 WB_END
392
393 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
394 os::uncommit_memory((char *)(uintptr_t)addr, size);
395 WB_END
396
397 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
398 os::release_memory((char *)(uintptr_t)addr, size);
399 WB_END
400
401 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
402 return MemTracker::tracking_level() == NMT_detail;
403 WB_END
404
405 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
406 // Test that we can downgrade NMT levels but not upgrade them.
407 if (MemTracker::tracking_level() == NMT_off) {
408 MemTracker::transition_to(NMT_off);
409 return MemTracker::tracking_level() == NMT_off;
410 } else {
411 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
412 MemTracker::transition_to(NMT_summary);
413 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
414
415 // Can't go to detail once NMT is set to summary.
416 MemTracker::transition_to(NMT_detail);
417 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
418
419 // Shutdown sets tracking level to minimal.
420 MemTracker::shutdown();
421 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
422
423 // Once the tracking level is minimal, we cannot increase to summary.
424 // The code ignores this request instead of asserting because if the malloc site
425 // table overflows in another thread, it tries to change the code to summary.
426 MemTracker::transition_to(NMT_summary);
427 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
428
429 // Really can never go up to detail, verify that the code would never do this.
430 MemTracker::transition_to(NMT_detail);
431 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
432 return MemTracker::tracking_level() == NMT_minimal;
433 }
434 WB_END
435
436 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
437 int hash_size = MallocSiteTable::hash_buckets();
438 assert(hash_size > 0, "NMT hash_size should be > 0");
439 return (jint)hash_size;
440 WB_END
441 #endif // INCLUDE_NMT
442
443 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
444 assert(method != NULL, "method should not be null");
445 ThreadToNativeFromVM ttn(thread);
446 return env->FromReflectedMethod(method);
447 }
448
449 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
450 MutexLockerEx mu(Compile_lock);
451 CodeCache::mark_all_nmethods_for_deoptimization();
452 VM_Deoptimize op;
453 VMThread::execute(&op);
454 WB_END
455
456 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
457 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
458 int result = 0;
459 CHECK_JNI_EXCEPTION_(env, result);
460 MutexLockerEx mu(Compile_lock);
461 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
462 if (is_osr) {
463 result += mh->mark_osr_nmethods();
464 } else if (mh->code() != NULL) {
465 mh->code()->mark_for_deoptimization();
466 ++result;
467 }
468 result += CodeCache::mark_for_deoptimization(mh());
469 if (result > 0) {
470 VM_Deoptimize op;
471 VMThread::execute(&op);
472 }
473 return result;
474 WB_END
475
476 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
477 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
478 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
479 MutexLockerEx mu(Compile_lock);
480 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
481 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
482 if (code == NULL) {
483 return JNI_FALSE;
484 }
485 return (code->is_alive() && !code->is_marked_for_deoptimization());
486 WB_END
487
488 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
489 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
490 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
491 MutexLockerEx mu(Compile_lock);
492 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
493 if (is_osr) {
494 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
495 } else {
496 return CompilationPolicy::can_be_compiled(mh, comp_level);
497 }
498 WB_END
499
500 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
501 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
502 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
503 MutexLockerEx mu(Compile_lock);
504 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
505 return mh->queued_for_compilation();
506 WB_END
507
508 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
509 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
510 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
511 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
512 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
513 return (code != NULL ? code->comp_level() : CompLevel_none);
514 WB_END
515
516 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
517 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
518 CHECK_JNI_EXCEPTION(env);
519 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
520 if (is_osr) {
521 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
522 } else {
523 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
524 }
525 WB_END
526
527 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
528 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
529 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
530 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
531 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
532 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
533 WB_END
534
535 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
536 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
537 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
538 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
539 bool result = mh->dont_inline();
540 mh->set_dont_inline(value == JNI_TRUE);
541 return result;
542 WB_END
543
544 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
545 if (comp_level == CompLevel_any) {
546 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
547 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
548 } else {
549 return CompileBroker::queue_size(comp_level);
550 }
551 WB_END
552
553 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
554 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
555 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
556 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
557 bool result = mh->force_inline();
558 mh->set_force_inline(value == JNI_TRUE);
559 return result;
560 WB_END
561
562 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
563 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
564 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
565 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
566 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
567 MutexLockerEx mu(Compile_lock);
568 return (mh->queued_for_compilation() || nm != NULL);
569 WB_END
570
571 class VM_WhiteBoxOperation : public VM_Operation {
572 public:
573 VM_WhiteBoxOperation() { }
574 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
575 bool allow_nested_vm_operations() const { return true; }
576 };
577
578 class AlwaysFalseClosure : public BoolObjectClosure {
579 public:
580 bool do_object_b(oop p) { return false; }
581 };
582
583 static AlwaysFalseClosure always_false;
584
585 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
586 public:
587 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
588 void doit() {
589 _mdo->clean_method_data(&always_false);
590 }
591 private:
592 MethodData* _mdo;
593 };
594
595 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
596 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
597 CHECK_JNI_EXCEPTION(env);
598 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
599 MutexLockerEx mu(Compile_lock);
600 MethodData* mdo = mh->method_data();
601 MethodCounters* mcs = mh->method_counters();
602
603 if (mdo != NULL) {
604 mdo->init();
605 ResourceMark rm;
606 int arg_count = mdo->method()->size_of_parameters();
607 for (int i = 0; i < arg_count; i++) {
608 mdo->set_arg_modified(i, 0);
609 }
610 VM_WhiteBoxCleanMethodData op(mdo);
611 VMThread::execute(&op);
612 }
613
614 mh->clear_not_c1_compilable();
615 mh->clear_not_c2_compilable();
616 mh->clear_not_c2_osr_compilable();
617 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
618 if (mcs != NULL) {
619 mcs->backedge_counter()->init();
620 mcs->invocation_counter()->init();
621 mcs->set_interpreter_invocation_count(0);
622 mcs->set_interpreter_throwout_count(0);
623
624 #ifdef TIERED
625 mcs->set_rate(0.0F);
626 mh->set_prev_event_count(0);
627 mh->set_prev_time(0);
628 #endif
629 }
630 WB_END
631
632 template <typename T>
633 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
634 if (name == NULL) {
635 return false;
636 }
637 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
638 const char* flag_name = env->GetStringUTFChars(name, NULL);
639 bool result = (*TAt)(flag_name, value);
640 env->ReleaseStringUTFChars(name, flag_name);
641 return result;
642 }
643
644 template <typename T>
645 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
646 if (name == NULL) {
647 return false;
648 }
649 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
650 const char* flag_name = env->GetStringUTFChars(name, NULL);
651 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
652 env->ReleaseStringUTFChars(name, flag_name);
653 return result;
654 }
655
656 template <typename T>
657 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
658 ResourceMark rm(thread);
659 jclass clazz = env->FindClass(name->as_C_string());
660 CHECK_JNI_EXCEPTION_(env, NULL);
661 jmethodID methodID = env->GetStaticMethodID(clazz,
662 vmSymbols::valueOf_name()->as_C_string(),
663 sig->as_C_string());
664 CHECK_JNI_EXCEPTION_(env, NULL);
665 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
666 CHECK_JNI_EXCEPTION_(env, NULL);
667 return result;
668 }
669
670 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
671 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
672 }
673 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
674 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
675 }
676 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
677 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
678 }
679 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
680 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
681 }*/
682 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
683 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
684 }
685
686 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
687 bool result;
688 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
689 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
690 return booleanBox(thread, env, result);
691 }
692 return NULL;
693 WB_END
694
695 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
696 intx result;
697 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
698 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
699 return longBox(thread, env, result);
700 }
701 return NULL;
702 WB_END
703
704 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
705 uintx result;
706 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
707 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
708 return longBox(thread, env, result);
709 }
710 return NULL;
711 WB_END
712
713 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
714 uint64_t result;
715 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
716 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
717 return longBox(thread, env, result);
718 }
719 return NULL;
720 WB_END
721
722 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
723 double result;
724 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
725 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
726 return doubleBox(thread, env, result);
727 }
728 return NULL;
729 WB_END
730
731 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
732 ccstr ccstrResult;
733 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
734 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
735 jstring result = env->NewStringUTF(ccstrResult);
736 CHECK_JNI_EXCEPTION_(env, NULL);
737 return result;
738 }
739 return NULL;
740 WB_END
741
742 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
743 bool result = value == JNI_TRUE ? true : false;
744 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
745 WB_END
746
747 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
748 intx result = value;
749 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
750 WB_END
751
752 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
753 uintx result = value;
754 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
755 WB_END
756
757 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
758 uint64_t result = value;
759 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
760 WB_END
761
762 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
763 double result = value;
764 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
765 WB_END
766
767 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
768 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
769 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
770 ccstr ccstrResult = ccstrValue;
771 bool needFree;
772 {
773 ThreadInVMfromNative ttvfn(thread); // back to VM
774 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
775 }
776 if (value != NULL) {
777 env->ReleaseStringUTFChars(value, ccstrValue);
778 }
779 if (needFree) {
780 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
781 }
782 WB_END
783
784
785 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
786 ResourceMark rm(THREAD);
787 int len;
788 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
789 return (StringTable::lookup(name, len) != NULL);
790 WB_END
791
792 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
793 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
794 Universe::heap()->collect(GCCause::_last_ditch_collection);
795 #if INCLUDE_ALL_GCS
796 if (UseG1GC) {
797 // Needs to be cleared explicitly for G1
798 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
799 }
800 #endif // INCLUDE_ALL_GCS
801 WB_END
802
803 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
804 Universe::heap()->collect(GCCause::_wb_young_gc);
805 WB_END
806
807 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
808 // static+volatile in order to force the read to happen
809 // (not be eliminated by the compiler)
810 static char c;
811 static volatile char* p;
812
813 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
814 if (p == NULL) {
815 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
816 }
817
818 c = *p;
819 WB_END
820
821 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
822 const char* cpu_features = VM_Version::cpu_features();
823 ThreadToNativeFromVM ttn(thread);
824 jstring features_string = env->NewStringUTF(cpu_features);
825
826 CHECK_JNI_EXCEPTION_(env, NULL);
827
828 return features_string;
829 WB_END
830
831
832 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
833 ResourceMark rm(THREAD);
834 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
835 CHECK_JNI_EXCEPTION_(env, NULL);
836 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
837 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
838 jobjectArray result = NULL;
839 if (code == NULL) {
840 return result;
841 }
842 int insts_size = code->insts_size();
843
844 ThreadToNativeFromVM ttn(thread);
845 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
846 CHECK_JNI_EXCEPTION_(env, NULL);
847 result = env->NewObjectArray(2, clazz, NULL);
848 if (result == NULL) {
849 return result;
850 }
851
852 jobject obj = integerBox(thread, env, code->comp_level());
853 CHECK_JNI_EXCEPTION_(env, NULL);
854 env->SetObjectArrayElement(result, 0, obj);
855
856 jbyteArray insts = env->NewByteArray(insts_size);
857 CHECK_JNI_EXCEPTION_(env, NULL);
858 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
859 env->SetObjectArrayElement(result, 1, insts);
860
861 return result;
862 WB_END
863
864
865 int WhiteBox::array_bytes_to_length(size_t bytes) {
866 return Array<u1>::bytes_to_length(bytes);
867 }
868
869 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
870 if (size < 0) {
871 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
872 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
873 }
874
875 oop class_loader_oop = JNIHandles::resolve(class_loader);
876 ClassLoaderData* cld = class_loader_oop != NULL
877 ? java_lang_ClassLoader::loader_data(class_loader_oop)
878 : ClassLoaderData::the_null_class_loader_data();
879
880 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
881
882 return (jlong)(uintptr_t)metadata;
883 WB_END
884
885 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
886 oop class_loader_oop = JNIHandles::resolve(class_loader);
887 ClassLoaderData* cld = class_loader_oop != NULL
888 ? java_lang_ClassLoader::loader_data(class_loader_oop)
889 : ClassLoaderData::the_null_class_loader_data();
890
891 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
892 WB_END
893
894 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
895 if (inc < 0) {
896 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
897 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
898 }
899
900 jlong max_size_t = (jlong) ((size_t) -1);
901 if (inc > max_size_t) {
902 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
903 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
904 }
905
906 size_t new_cap_until_GC = 0;
907 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
908 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
909 if (!success) {
910 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
911 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
912 "due to contention with another thread");
913 }
914 return (jlong) new_cap_until_GC;
915 WB_END
916
917 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
918 return (jlong) MetaspaceGC::capacity_until_GC();
919 WB_END
920
921 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
922 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
923 WB_END
924
925 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
926 oop obj_oop = JNIHandles::resolve(obj);
927 return (jboolean) obj_oop->mark()->has_monitor();
928 WB_END
929
930 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
931 VM_ForceSafepoint force_safepoint_op;
932 VMThread::execute(&force_safepoint_op);
933 WB_END
934
935 //Some convenience methods to deal with objects from java
936 int WhiteBox::offset_for_field(const char* field_name, oop object,
937 Symbol* signature_symbol) {
938 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
939 Thread* THREAD = Thread::current();
940
941 //Get the class of our object
942 Klass* arg_klass = object->klass();
943 //Turn it into an instance-klass
944 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
945
946 //Create symbols to look for in the class
947 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
948 THREAD);
949
950 //To be filled in with an offset of the field we're looking for
951 fieldDescriptor fd;
952
953 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
954 if (res == NULL) {
955 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
956 name_symbol->as_C_string());
957 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
958 }
959
960 //fetch the field at the offset we've found
961 int dest_offset = fd.offset();
962
963 return dest_offset;
964 }
965
966
967 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
968 int offset = offset_for_field(field_name, object,
969 vmSymbols::string_signature());
970 oop string = object->obj_field(offset);
971 if (string == NULL) {
972 return NULL;
973 }
974 const char* ret = java_lang_String::as_utf8_string(string);
975 return ret;
976 }
977
978 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
979 int offset =
980 offset_for_field(field_name, object, vmSymbols::bool_signature());
981 bool ret = (object->bool_field(offset) == JNI_TRUE);
982 return ret;
983 }
984
985 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
986 ResourceMark rm;
987 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
988
989 // one by one registration natives for exception catching
990 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
991 CHECK_JNI_EXCEPTION(env);
992 for (int i = 0, n = method_count; i < n; ++i) {
993 // Skip dummy entries
994 if (method_array[i].fnPtr == NULL) continue;
995 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
996 jthrowable throwable_obj = env->ExceptionOccurred();
997 if (throwable_obj != NULL) {
998 env->ExceptionClear();
999 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1000 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1001 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1002 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1003 method_array[i].name, method_array[i].signature);
1004 }
1005 } else {
1006 // Registration failed unexpectedly.
1007 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1008 method_array[i].name, method_array[i].signature);
1009 env->UnregisterNatives(wbclass);
1010 break;
1011 }
1012 }
1013 }
1014 }
1015
1016 // Checks that the library libfile has the noexecstack bit set.
1017 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1018 jboolean ret = false;
1019 #ifdef LINUX
1020 // Can't be in VM when we call JNI.
1021 ThreadToNativeFromVM ttnfv(thread);
1022 const char* lf = env->GetStringUTFChars(libfile, NULL);
1023 CHECK_JNI_EXCEPTION_(env, 0);
1024 ElfFile ef(lf);
1025 ret = (jboolean) ef.specifies_noexecstack();
1026 env->ReleaseStringUTFChars(libfile, lf);
1027 #endif
1028 return ret;
1029 WB_END
1030
1031 #define CC (char*)
1032
1033 static JNINativeMethod methods[] = {
1034 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1035 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1036 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1037 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1038 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1039 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1040 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1041 {CC"classKnownToNotExist",
1042 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
1043 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs},
1044 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
1045 (void*)&WB_GetLookupCacheMatches},
1046 {CC"parseCommandLine",
1047 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1048 (void*) &WB_ParseCommandLine
1049 },
1050 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
1051 (void*)&WB_AddToBootstrapClassLoaderSearch},
1052 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
1053 (void*)&WB_AddToSystemClassLoaderSearch},
1054 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1055 (void*)&WB_GetCompressedOopsMaxHeapSize},
1056 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1057 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1058 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1059 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1060 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1061 #if INCLUDE_ALL_GCS
1062 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1063 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1064 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1065 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1066 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1067 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1068 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1069 (void*)&WB_G1AuxiliaryMemoryUsage },
1070 #endif // INCLUDE_ALL_GCS
1071 #if INCLUDE_NMT
1072 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1073 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1074 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1075 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1076 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1077 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1078 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1079 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported},
1080 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1081 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1082 #endif // INCLUDE_NMT
1083 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1084 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
1085 (void*)&WB_DeoptimizeMethod },
1086 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z",
1087 (void*)&WB_IsMethodCompiled },
1088 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1089 (void*)&WB_IsMethodCompilable},
1090 {CC"isMethodQueuedForCompilation",
1091 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1092 {CC"makeMethodNotCompilable",
1093 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1094 {CC"testSetDontInlineMethod",
1095 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1096 {CC"getMethodCompilationLevel",
1097 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1098 {CC"getMethodEntryBci",
1099 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1100 {CC"getCompileQueueSize",
1101 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1102 {CC"testSetForceInlineMethod",
1103 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1104 {CC"enqueueMethodForCompilation",
1105 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1106 {CC"clearMethodState",
1107 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1108 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1109 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1110 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1111 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1112 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1113 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1114 (void*)&WB_SetStringVMFlag},
1115 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1116 (void*)&WB_GetBooleanVMFlag},
1117 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1118 (void*)&WB_GetIntxVMFlag},
1119 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1120 (void*)&WB_GetUintxVMFlag},
1121 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1122 (void*)&WB_GetUint64VMFlag},
1123 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1124 (void*)&WB_GetDoubleVMFlag},
1125 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1126 (void*)&WB_GetStringVMFlag},
1127 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1128 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1129 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1130 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1131 {CC"allocateMetaspace",
1132 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1133 {CC"freeMetaspace",
1134 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1135 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1136 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1137 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1138 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1139 (void*)&WB_GetNMethod },
1140 {CC"isMonitorInflated", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1141 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1142 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
1143 (void*)&WB_CheckLibSpecifiesNoexecstack},
1144 };
1145
1146 #undef CC
1147
1148 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1149 {
1150 if (WhiteBoxAPI) {
1151 // Make sure that wbclass is loaded by the null classloader
1152 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1153 Handle loader(ikh->class_loader());
1154 if (loader.is_null()) {
1155 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1156 WhiteBox::register_extended(env, wbclass, thread);
1157 WhiteBox::set_used();
1158 }
1159 }
1160 }
1161 JVM_END