Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/prims/whitebox.cpp@887a7cedb892
src/share/vm/prims/whitebox.cpp
Tue, 18 Nov 2014 03:38:50 -0800
- author
- iklam
- date
- Tue, 18 Nov 2014 03:38:50 -0800
- changeset 7381
- 887a7cedb892
- parent 7344
- 787c9c28311f
- child 7382
- c80ddae00f51
- permissions
- -rw-r--r--
8064701: Some CDS optimizations should be disabled if bootclasspath is modified by JVMTI
Summary: Added API to track bootclasspath modification
Reviewed-by: jiangli, dholmes, minqi
1 /*
2 * Copyright (c) 2012, 2014, 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 */
25 #include "precompiled.hpp"
27 #include "memory/metadataFactory.hpp"
28 #include "memory/universe.hpp"
29 #include "oops/oop.inline.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/classLoaderData.hpp"
34 #include "prims/whitebox.hpp"
35 #include "prims/wbtestmethods/parserTests.hpp"
37 #include "runtime/arguments.hpp"
38 #include "runtime/interfaceSupport.hpp"
39 #include "runtime/os.hpp"
40 #include "utilities/array.hpp"
41 #include "utilities/debug.hpp"
42 #include "utilities/macros.hpp"
43 #include "utilities/exceptions.hpp"
45 #if INCLUDE_ALL_GCS
46 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp"
47 #include "gc_implementation/g1/concurrentMark.hpp"
48 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
49 #include "gc_implementation/g1/heapRegionRemSet.hpp"
50 #endif // INCLUDE_ALL_GCS
52 #if INCLUDE_NMT
53 #include "services/mallocSiteTable.hpp"
54 #include "services/memTracker.hpp"
55 #include "utilities/nativeCallStack.hpp"
56 #endif // INCLUDE_NMT
58 #include "compiler/compileBroker.hpp"
59 #include "jvmtifiles/jvmtiEnv.hpp"
60 #include "runtime/compilationPolicy.hpp"
62 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
64 #define SIZE_T_MAX_VALUE ((size_t) -1)
66 bool WhiteBox::_used = false;
68 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
69 return (jlong)(void*)JNIHandles::resolve(obj);
70 WB_END
72 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
73 return heapOopSize;
74 WB_END
77 class WBIsKlassAliveClosure : public KlassClosure {
78 Symbol* _name;
79 bool _found;
80 public:
81 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
83 void do_klass(Klass* k) {
84 if (_found) return;
85 Symbol* ksym = k->name();
86 if (ksym->fast_compare(_name) == 0) {
87 _found = true;
88 }
89 }
91 bool found() const {
92 return _found;
93 }
94 };
96 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
97 Handle h_name = JNIHandles::resolve(name);
98 if (h_name.is_null()) return false;
99 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
100 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
102 WBIsKlassAliveClosure closure(sym);
103 ClassLoaderDataGraph::classes_do(&closure);
105 return closure.found();
106 WB_END
108 WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name))
109 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
110 const char* class_name = env->GetStringUTFChars(name, NULL);
111 jboolean result = JVM_KnownToNotExist(env, loader, class_name);
112 env->ReleaseStringUTFChars(name, class_name);
113 return result;
114 WB_END
116 WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader))
117 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
118 return JVM_GetResourceLookupCacheURLs(env, loader);
119 WB_END
121 WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name))
122 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
123 const char* resource_name = env->GetStringUTFChars(name, NULL);
124 jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name);
126 env->ReleaseStringUTFChars(name, resource_name);
127 return result;
128 WB_END
130 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
131 #if INCLUDE_JVMTI
132 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
133 const char* seg = env->GetStringUTFChars(segment, NULL);
134 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
135 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
136 assert(err == JVMTI_ERROR_NONE, "must not fail");
137 env->ReleaseStringUTFChars(segment, seg);
138 #endif
139 }
140 WB_END
142 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
143 #if INCLUDE_JVMTI
144 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
145 const char* seg = env->GetStringUTFChars(segment, NULL);
146 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
147 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
148 assert(err == JVMTI_ERROR_NONE, "must not fail");
149 env->ReleaseStringUTFChars(segment, seg);
150 #endif
151 }
152 WB_END
155 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
156 return (jlong)Arguments::max_heap_for_compressed_oops();
157 }
158 WB_END
160 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
161 CollectorPolicy * p = Universe::heap()->collector_policy();
162 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
163 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
164 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
165 p->space_alignment(), p->heap_alignment());
166 }
167 WB_END
169 #ifndef PRODUCT
170 // Forward declaration
171 void TestReservedSpace_test();
172 void TestReserveMemorySpecial_test();
173 void TestVirtualSpace_test();
174 void TestMetaspaceAux_test();
175 #endif
177 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
178 #ifndef PRODUCT
179 TestReservedSpace_test();
180 TestReserveMemorySpecial_test();
181 TestVirtualSpace_test();
182 TestMetaspaceAux_test();
183 #endif
184 WB_END
186 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
187 size_t granularity = os::vm_allocation_granularity();
188 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
189 VirtualSpace vs;
190 vs.initialize(rhs, 50 * granularity);
192 //Check if constraints are complied
193 if (!( UseCompressedOops && rhs.base() != NULL &&
194 Universe::narrow_oop_base() != NULL &&
195 Universe::narrow_oop_use_implicit_null_checks() )) {
196 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
197 "\tUseCompressedOops is %d\n"
198 "\trhs.base() is "PTR_FORMAT"\n"
199 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
200 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
201 UseCompressedOops,
202 rhs.base(),
203 Universe::narrow_oop_base(),
204 Universe::narrow_oop_use_implicit_null_checks());
205 return;
206 }
207 tty->print_cr("Reading from no access area... ");
208 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
209 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
210 WB_END
212 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
213 size_t magnitude, size_t iterations) {
214 size_t granularity = os::vm_allocation_granularity();
215 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
216 VirtualSpace vs;
217 if (!vs.initialize(rhs, 0)) {
218 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
219 return 3;
220 }
222 long seed = os::random();
223 tty->print_cr("Random seed is %ld", seed);
224 os::init_random(seed);
226 for (size_t i = 0; i < iterations; i++) {
228 // Whether we will shrink or grow
229 bool shrink = os::random() % 2L == 0;
231 // Get random delta to resize virtual space
232 size_t delta = (size_t)os::random() % magnitude;
234 // If we are about to shrink virtual space below zero, then expand instead
235 if (shrink && vs.committed_size() < delta) {
236 shrink = false;
237 }
239 // Resizing by delta
240 if (shrink) {
241 vs.shrink_by(delta);
242 } else {
243 // If expanding fails expand_by will silently return false
244 vs.expand_by(delta, true);
245 }
246 }
247 return 0;
248 }
250 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
251 jlong reserved_space_size, jlong magnitude, jlong iterations))
252 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
253 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
254 iterations);
255 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
256 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
257 return 1;
258 }
260 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
261 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
262 if (sizeof(size_t) < sizeof(jlong)) {
263 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
264 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
265 || iterations > size_t_max_value) {
266 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
267 return 2;
268 }
269 }
271 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
272 (size_t) magnitude, (size_t) iterations);
273 WB_END
275 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
276 oop p = JNIHandles::resolve(obj);
277 #if INCLUDE_ALL_GCS
278 if (UseG1GC) {
279 G1CollectedHeap* g1 = G1CollectedHeap::heap();
280 const HeapRegion* hr = g1->heap_region_containing(p);
281 if (hr == NULL) {
282 return false;
283 }
284 return !(hr->is_young());
285 } else if (UseParallelGC) {
286 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
287 return !psh->is_in_young(p);
288 }
289 #endif // INCLUDE_ALL_GCS
290 GenCollectedHeap* gch = GenCollectedHeap::heap();
291 return !gch->is_in_young(p);
292 WB_END
294 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
295 oop p = JNIHandles::resolve(obj);
296 return p->size() * HeapWordSize;
297 WB_END
299 #if INCLUDE_ALL_GCS
300 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
301 G1CollectedHeap* g1 = G1CollectedHeap::heap();
302 oop result = JNIHandles::resolve(obj);
303 const HeapRegion* hr = g1->heap_region_containing(result);
304 return hr->isHumongous();
305 WB_END
307 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
308 G1CollectedHeap* g1 = G1CollectedHeap::heap();
309 size_t nr = g1->num_free_regions();
310 return (jlong)nr;
311 WB_END
313 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
314 G1CollectedHeap* g1 = G1CollectedHeap::heap();
315 ConcurrentMark* cm = g1->concurrent_mark();
316 return cm->concurrent_marking_in_progress();
317 WB_END
319 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
320 return (jint)HeapRegion::GrainBytes;
321 WB_END
322 #endif // INCLUDE_ALL_GCS
324 #if INCLUDE_NMT
325 // Alloc memory using the test memory type so that we can use that to see if
326 // NMT picks it up correctly
327 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
328 jlong addr = 0;
329 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
330 return addr;
331 WB_END
333 // Alloc memory with pseudo call stack. The test can create psudo malloc
334 // allocation site to stress the malloc tracking.
335 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
336 address pc = (address)(size_t)pseudo_stack;
337 NativeCallStack stack(&pc, 1);
338 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
339 WB_END
341 // Free the memory allocated by NMTAllocTest
342 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
343 os::free((void*)(uintptr_t)mem, mtTest);
344 WB_END
346 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
347 jlong addr = 0;
349 addr = (jlong)(uintptr_t)os::reserve_memory(size);
350 MemTracker::record_virtual_memory_type((address)addr, mtTest);
352 return addr;
353 WB_END
356 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
357 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
358 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
359 WB_END
361 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
362 os::uncommit_memory((char *)(uintptr_t)addr, size);
363 WB_END
365 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
366 os::release_memory((char *)(uintptr_t)addr, size);
367 WB_END
369 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
370 return MemTracker::tracking_level() == NMT_detail;
371 WB_END
373 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
374 // Test that we can downgrade NMT levels but not upgrade them.
375 if (MemTracker::tracking_level() == NMT_off) {
376 MemTracker::transition_to(NMT_off);
377 return MemTracker::tracking_level() == NMT_off;
378 } else {
379 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
380 MemTracker::transition_to(NMT_summary);
381 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
383 // Can't go to detail once NMT is set to summary.
384 MemTracker::transition_to(NMT_detail);
385 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
387 // Shutdown sets tracking level to minimal.
388 MemTracker::shutdown();
389 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
391 // Once the tracking level is minimal, we cannot increase to summary.
392 // The code ignores this request instead of asserting because if the malloc site
393 // table overflows in another thread, it tries to change the code to summary.
394 MemTracker::transition_to(NMT_summary);
395 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
397 // Really can never go up to detail, verify that the code would never do this.
398 MemTracker::transition_to(NMT_detail);
399 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
400 return MemTracker::tracking_level() == NMT_minimal;
401 }
402 WB_END
404 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
405 int hash_size = MallocSiteTable::hash_buckets();
406 assert(hash_size > 0, "NMT hash_size should be > 0");
407 return (jint)hash_size;
408 WB_END
409 #endif // INCLUDE_NMT
411 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
412 assert(method != NULL, "method should not be null");
413 ThreadToNativeFromVM ttn(thread);
414 return env->FromReflectedMethod(method);
415 }
417 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
418 MutexLockerEx mu(Compile_lock);
419 CodeCache::mark_all_nmethods_for_deoptimization();
420 VM_Deoptimize op;
421 VMThread::execute(&op);
422 WB_END
424 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
425 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
426 int result = 0;
427 CHECK_JNI_EXCEPTION_(env, result);
428 MutexLockerEx mu(Compile_lock);
429 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
430 if (is_osr) {
431 result += mh->mark_osr_nmethods();
432 } else if (mh->code() != NULL) {
433 mh->code()->mark_for_deoptimization();
434 ++result;
435 }
436 result += CodeCache::mark_for_deoptimization(mh());
437 if (result > 0) {
438 VM_Deoptimize op;
439 VMThread::execute(&op);
440 }
441 return result;
442 WB_END
444 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
445 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
446 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
447 MutexLockerEx mu(Compile_lock);
448 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
449 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
450 if (code == NULL) {
451 return JNI_FALSE;
452 }
453 return (code->is_alive() && !code->is_marked_for_deoptimization());
454 WB_END
456 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
457 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
458 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
459 MutexLockerEx mu(Compile_lock);
460 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
461 if (is_osr) {
462 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
463 } else {
464 return CompilationPolicy::can_be_compiled(mh, comp_level);
465 }
466 WB_END
468 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
469 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
470 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
471 MutexLockerEx mu(Compile_lock);
472 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
473 return mh->queued_for_compilation();
474 WB_END
476 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
477 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
478 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
479 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
480 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
481 return (code != NULL ? code->comp_level() : CompLevel_none);
482 WB_END
484 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
485 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
486 CHECK_JNI_EXCEPTION(env);
487 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
488 if (is_osr) {
489 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
490 } else {
491 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
492 }
493 WB_END
495 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
496 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
497 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
498 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
499 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
500 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
501 WB_END
503 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
504 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
505 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
506 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
507 bool result = mh->dont_inline();
508 mh->set_dont_inline(value == JNI_TRUE);
509 return result;
510 WB_END
512 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
513 if (comp_level == CompLevel_any) {
514 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
515 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
516 } else {
517 return CompileBroker::queue_size(comp_level);
518 }
519 WB_END
521 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
522 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
523 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
524 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
525 bool result = mh->force_inline();
526 mh->set_force_inline(value == JNI_TRUE);
527 return result;
528 WB_END
530 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
531 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
532 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
533 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
534 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
535 MutexLockerEx mu(Compile_lock);
536 return (mh->queued_for_compilation() || nm != NULL);
537 WB_END
539 class VM_WhiteBoxOperation : public VM_Operation {
540 public:
541 VM_WhiteBoxOperation() { }
542 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
543 bool allow_nested_vm_operations() const { return true; }
544 };
546 class AlwaysFalseClosure : public BoolObjectClosure {
547 public:
548 bool do_object_b(oop p) { return false; }
549 };
551 static AlwaysFalseClosure always_false;
553 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
554 public:
555 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
556 void doit() {
557 _mdo->clean_method_data(&always_false);
558 }
559 private:
560 MethodData* _mdo;
561 };
563 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
564 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
565 CHECK_JNI_EXCEPTION(env);
566 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
567 MutexLockerEx mu(Compile_lock);
568 MethodData* mdo = mh->method_data();
569 MethodCounters* mcs = mh->method_counters();
571 if (mdo != NULL) {
572 mdo->init();
573 ResourceMark rm;
574 int arg_count = mdo->method()->size_of_parameters();
575 for (int i = 0; i < arg_count; i++) {
576 mdo->set_arg_modified(i, 0);
577 }
578 VM_WhiteBoxCleanMethodData op(mdo);
579 VMThread::execute(&op);
580 }
582 mh->clear_not_c1_compilable();
583 mh->clear_not_c2_compilable();
584 mh->clear_not_c2_osr_compilable();
585 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
586 if (mcs != NULL) {
587 mcs->backedge_counter()->init();
588 mcs->invocation_counter()->init();
589 mcs->set_interpreter_invocation_count(0);
590 mcs->set_interpreter_throwout_count(0);
592 #ifdef TIERED
593 mcs->set_rate(0.0F);
594 mh->set_prev_event_count(0);
595 mh->set_prev_time(0);
596 #endif
597 }
598 WB_END
600 template <typename T>
601 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
602 if (name == NULL) {
603 return false;
604 }
605 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
606 const char* flag_name = env->GetStringUTFChars(name, NULL);
607 bool result = (*TAt)(flag_name, value);
608 env->ReleaseStringUTFChars(name, flag_name);
609 return result;
610 }
612 template <typename T>
613 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
614 if (name == NULL) {
615 return false;
616 }
617 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
618 const char* flag_name = env->GetStringUTFChars(name, NULL);
619 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
620 env->ReleaseStringUTFChars(name, flag_name);
621 return result;
622 }
624 template <typename T>
625 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
626 ResourceMark rm(thread);
627 jclass clazz = env->FindClass(name->as_C_string());
628 CHECK_JNI_EXCEPTION_(env, NULL);
629 jmethodID methodID = env->GetStaticMethodID(clazz,
630 vmSymbols::valueOf_name()->as_C_string(),
631 sig->as_C_string());
632 CHECK_JNI_EXCEPTION_(env, NULL);
633 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
634 CHECK_JNI_EXCEPTION_(env, NULL);
635 return result;
636 }
638 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
639 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
640 }
641 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
642 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
643 }
644 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
645 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
646 }
647 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
648 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
649 }*/
650 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
651 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
652 }
654 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
655 bool result;
656 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
657 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
658 return booleanBox(thread, env, result);
659 }
660 return NULL;
661 WB_END
663 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
664 intx result;
665 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
666 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
667 return longBox(thread, env, result);
668 }
669 return NULL;
670 WB_END
672 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
673 uintx result;
674 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
675 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
676 return longBox(thread, env, result);
677 }
678 return NULL;
679 WB_END
681 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
682 uint64_t result;
683 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
684 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
685 return longBox(thread, env, result);
686 }
687 return NULL;
688 WB_END
690 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
691 double result;
692 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
693 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
694 return doubleBox(thread, env, result);
695 }
696 return NULL;
697 WB_END
699 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
700 ccstr ccstrResult;
701 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
702 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
703 jstring result = env->NewStringUTF(ccstrResult);
704 CHECK_JNI_EXCEPTION_(env, NULL);
705 return result;
706 }
707 return NULL;
708 WB_END
710 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
711 bool result = value == JNI_TRUE ? true : false;
712 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
713 WB_END
715 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
716 intx result = value;
717 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
718 WB_END
720 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
721 uintx result = value;
722 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
723 WB_END
725 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
726 uint64_t result = value;
727 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
728 WB_END
730 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
731 double result = value;
732 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
733 WB_END
735 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
736 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
737 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
738 ccstr ccstrResult = ccstrValue;
739 bool needFree;
740 {
741 ThreadInVMfromNative ttvfn(thread); // back to VM
742 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
743 }
744 if (value != NULL) {
745 env->ReleaseStringUTFChars(value, ccstrValue);
746 }
747 if (needFree) {
748 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
749 }
750 WB_END
753 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
754 ResourceMark rm(THREAD);
755 int len;
756 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
757 return (StringTable::lookup(name, len) != NULL);
758 WB_END
760 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
761 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
762 Universe::heap()->collect(GCCause::_last_ditch_collection);
763 #if INCLUDE_ALL_GCS
764 if (UseG1GC) {
765 // Needs to be cleared explicitly for G1
766 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
767 }
768 #endif // INCLUDE_ALL_GCS
769 WB_END
771 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
772 Universe::heap()->collect(GCCause::_wb_young_gc);
773 WB_END
775 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
776 // static+volatile in order to force the read to happen
777 // (not be eliminated by the compiler)
778 static char c;
779 static volatile char* p;
781 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
782 if (p == NULL) {
783 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
784 }
786 c = *p;
787 WB_END
789 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
790 const char* cpu_features = VM_Version::cpu_features();
791 ThreadToNativeFromVM ttn(thread);
792 jstring features_string = env->NewStringUTF(cpu_features);
794 CHECK_JNI_EXCEPTION_(env, NULL);
796 return features_string;
797 WB_END
800 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
801 ResourceMark rm(THREAD);
802 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
803 CHECK_JNI_EXCEPTION_(env, NULL);
804 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
805 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
806 jobjectArray result = NULL;
807 if (code == NULL) {
808 return result;
809 }
810 int insts_size = code->insts_size();
812 ThreadToNativeFromVM ttn(thread);
813 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
814 CHECK_JNI_EXCEPTION_(env, NULL);
815 result = env->NewObjectArray(2, clazz, NULL);
816 if (result == NULL) {
817 return result;
818 }
820 jobject obj = integerBox(thread, env, code->comp_level());
821 CHECK_JNI_EXCEPTION_(env, NULL);
822 env->SetObjectArrayElement(result, 0, obj);
824 jbyteArray insts = env->NewByteArray(insts_size);
825 CHECK_JNI_EXCEPTION_(env, NULL);
826 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
827 env->SetObjectArrayElement(result, 1, insts);
829 return result;
830 WB_END
833 int WhiteBox::array_bytes_to_length(size_t bytes) {
834 return Array<u1>::bytes_to_length(bytes);
835 }
837 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
838 if (size < 0) {
839 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
840 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
841 }
843 oop class_loader_oop = JNIHandles::resolve(class_loader);
844 ClassLoaderData* cld = class_loader_oop != NULL
845 ? java_lang_ClassLoader::loader_data(class_loader_oop)
846 : ClassLoaderData::the_null_class_loader_data();
848 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
850 return (jlong)(uintptr_t)metadata;
851 WB_END
853 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
854 oop class_loader_oop = JNIHandles::resolve(class_loader);
855 ClassLoaderData* cld = class_loader_oop != NULL
856 ? java_lang_ClassLoader::loader_data(class_loader_oop)
857 : ClassLoaderData::the_null_class_loader_data();
859 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
860 WB_END
862 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
863 if (inc < 0) {
864 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
865 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
866 }
868 jlong max_size_t = (jlong) ((size_t) -1);
869 if (inc > max_size_t) {
870 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
871 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
872 }
874 size_t new_cap_until_GC = 0;
875 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
876 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
877 if (!success) {
878 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
879 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
880 "due to contention with another thread");
881 }
882 return (jlong) new_cap_until_GC;
883 WB_END
885 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
886 return (jlong) MetaspaceGC::capacity_until_GC();
887 WB_END
889 //Some convenience methods to deal with objects from java
890 int WhiteBox::offset_for_field(const char* field_name, oop object,
891 Symbol* signature_symbol) {
892 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
893 Thread* THREAD = Thread::current();
895 //Get the class of our object
896 Klass* arg_klass = object->klass();
897 //Turn it into an instance-klass
898 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
900 //Create symbols to look for in the class
901 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
902 THREAD);
904 //To be filled in with an offset of the field we're looking for
905 fieldDescriptor fd;
907 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
908 if (res == NULL) {
909 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
910 name_symbol->as_C_string());
911 fatal("Invalid layout of preloaded class");
912 }
914 //fetch the field at the offset we've found
915 int dest_offset = fd.offset();
917 return dest_offset;
918 }
921 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
922 int offset = offset_for_field(field_name, object,
923 vmSymbols::string_signature());
924 oop string = object->obj_field(offset);
925 if (string == NULL) {
926 return NULL;
927 }
928 const char* ret = java_lang_String::as_utf8_string(string);
929 return ret;
930 }
932 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
933 int offset =
934 offset_for_field(field_name, object, vmSymbols::bool_signature());
935 bool ret = (object->bool_field(offset) == JNI_TRUE);
936 return ret;
937 }
939 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
940 ResourceMark rm;
941 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
943 // one by one registration natives for exception catching
944 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
945 CHECK_JNI_EXCEPTION(env);
946 for (int i = 0, n = method_count; i < n; ++i) {
947 // Skip dummy entries
948 if (method_array[i].fnPtr == NULL) continue;
949 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
950 jthrowable throwable_obj = env->ExceptionOccurred();
951 if (throwable_obj != NULL) {
952 env->ExceptionClear();
953 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
954 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
955 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
956 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
957 method_array[i].name, method_array[i].signature);
958 }
959 } else {
960 // Registration failed unexpectedly.
961 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
962 method_array[i].name, method_array[i].signature);
963 env->UnregisterNatives(wbclass);
964 break;
965 }
966 }
967 }
968 }
970 #define CC (char*)
972 static JNINativeMethod methods[] = {
973 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
974 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
975 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
976 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
977 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
978 {CC"classKnownToNotExist",
979 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
980 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs},
981 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
982 (void*)&WB_GetLookupCacheMatches},
983 {CC"parseCommandLine",
984 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
985 (void*) &WB_ParseCommandLine
986 },
987 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
988 (void*)&WB_AddToBootstrapClassLoaderSearch},
989 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
990 (void*)&WB_AddToSystemClassLoaderSearch},
991 {CC"getCompressedOopsMaxHeapSize", CC"()J",
992 (void*)&WB_GetCompressedOopsMaxHeapSize},
993 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
994 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
995 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
996 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
997 #if INCLUDE_ALL_GCS
998 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
999 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1000 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1001 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1002 #endif // INCLUDE_ALL_GCS
1003 #if INCLUDE_NMT
1004 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1005 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1006 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1007 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1008 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1009 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1010 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1011 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported},
1012 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1013 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1014 #endif // INCLUDE_NMT
1015 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1016 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
1017 (void*)&WB_DeoptimizeMethod },
1018 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z",
1019 (void*)&WB_IsMethodCompiled },
1020 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1021 (void*)&WB_IsMethodCompilable},
1022 {CC"isMethodQueuedForCompilation",
1023 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1024 {CC"makeMethodNotCompilable",
1025 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1026 {CC"testSetDontInlineMethod",
1027 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1028 {CC"getMethodCompilationLevel",
1029 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1030 {CC"getMethodEntryBci",
1031 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1032 {CC"getCompileQueueSize",
1033 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1034 {CC"testSetForceInlineMethod",
1035 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1036 {CC"enqueueMethodForCompilation",
1037 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1038 {CC"clearMethodState",
1039 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1040 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1041 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1042 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1043 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1044 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1045 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1046 (void*)&WB_SetStringVMFlag},
1047 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1048 (void*)&WB_GetBooleanVMFlag},
1049 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1050 (void*)&WB_GetIntxVMFlag},
1051 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1052 (void*)&WB_GetUintxVMFlag},
1053 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1054 (void*)&WB_GetUint64VMFlag},
1055 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1056 (void*)&WB_GetDoubleVMFlag},
1057 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1058 (void*)&WB_GetStringVMFlag},
1059 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1060 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1061 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1062 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1063 {CC"allocateMetaspace",
1064 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1065 {CC"freeMetaspace",
1066 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1067 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1068 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1069 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1070 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1071 (void*)&WB_GetNMethod },
1072 };
1074 #undef CC
1076 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1077 {
1078 if (WhiteBoxAPI) {
1079 // Make sure that wbclass is loaded by the null classloader
1080 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1081 Handle loader(ikh->class_loader());
1082 if (loader.is_null()) {
1083 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1084 WhiteBox::register_extended(env, wbclass, thread);
1085 WhiteBox::set_used();
1086 }
1087 }
1088 }
1089 JVM_END
