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src/share/vm/prims/whitebox.cpp@33e421924c67
src/share/vm/prims/whitebox.cpp
Tue, 07 Apr 2015 10:53:51 +0200
- author
- tschatzl
- date
- Tue, 07 Apr 2015 10:53:51 +0200
- changeset 7781
- 33e421924c67
- parent 7779
- cc5c3ef1f03a
- child 7788
- c97ba20ad404
- permissions
- -rw-r--r--
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
Summary: Allow use of large pages for auxiliary data structures in G1. Clean up existing interfaces.
Reviewed-by: jmasa, pliden, stefank
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
76 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
77 return os::vm_page_size();
78 WB_END
80 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
81 return os::large_page_size();
82 WB_END
84 class WBIsKlassAliveClosure : public KlassClosure {
85 Symbol* _name;
86 bool _found;
87 public:
88 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
90 void do_klass(Klass* k) {
91 if (_found) return;
92 Symbol* ksym = k->name();
93 if (ksym->fast_compare(_name) == 0) {
94 _found = true;
95 }
96 }
98 bool found() const {
99 return _found;
100 }
101 };
103 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
104 Handle h_name = JNIHandles::resolve(name);
105 if (h_name.is_null()) return false;
106 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
107 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
109 WBIsKlassAliveClosure closure(sym);
110 ClassLoaderDataGraph::classes_do(&closure);
112 return closure.found();
113 WB_END
115 WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name))
116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
117 const char* class_name = env->GetStringUTFChars(name, NULL);
118 jboolean result = JVM_KnownToNotExist(env, loader, class_name);
119 env->ReleaseStringUTFChars(name, class_name);
120 return result;
121 WB_END
123 WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader))
124 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
125 return JVM_GetResourceLookupCacheURLs(env, loader);
126 WB_END
128 WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name))
129 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
130 const char* resource_name = env->GetStringUTFChars(name, NULL);
131 jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name);
133 env->ReleaseStringUTFChars(name, resource_name);
134 return result;
135 WB_END
137 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
138 #if INCLUDE_JVMTI
139 ResourceMark rm;
140 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
141 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
142 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
143 assert(err == JVMTI_ERROR_NONE, "must not fail");
144 #endif
145 }
146 WB_END
148 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
149 #if INCLUDE_JVMTI
150 ResourceMark rm;
151 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
152 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
153 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
154 assert(err == JVMTI_ERROR_NONE, "must not fail");
155 #endif
156 }
157 WB_END
160 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
161 return (jlong)Arguments::max_heap_for_compressed_oops();
162 }
163 WB_END
165 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
166 CollectorPolicy * p = Universe::heap()->collector_policy();
167 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
168 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
169 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
170 p->space_alignment(), p->heap_alignment());
171 }
172 WB_END
174 #ifndef PRODUCT
175 // Forward declaration
176 void TestReservedSpace_test();
177 void TestReserveMemorySpecial_test();
178 void TestVirtualSpace_test();
179 void TestMetaspaceAux_test();
180 #endif
182 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
183 #ifndef PRODUCT
184 TestReservedSpace_test();
185 TestReserveMemorySpecial_test();
186 TestVirtualSpace_test();
187 TestMetaspaceAux_test();
188 #endif
189 WB_END
191 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
192 size_t granularity = os::vm_allocation_granularity();
193 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
194 VirtualSpace vs;
195 vs.initialize(rhs, 50 * granularity);
197 //Check if constraints are complied
198 if (!( UseCompressedOops && rhs.base() != NULL &&
199 Universe::narrow_oop_base() != NULL &&
200 Universe::narrow_oop_use_implicit_null_checks() )) {
201 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
202 "\tUseCompressedOops is %d\n"
203 "\trhs.base() is "PTR_FORMAT"\n"
204 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
205 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
206 UseCompressedOops,
207 rhs.base(),
208 Universe::narrow_oop_base(),
209 Universe::narrow_oop_use_implicit_null_checks());
210 return;
211 }
212 tty->print_cr("Reading from no access area... ");
213 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
214 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
215 WB_END
217 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
218 size_t magnitude, size_t iterations) {
219 size_t granularity = os::vm_allocation_granularity();
220 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
221 VirtualSpace vs;
222 if (!vs.initialize(rhs, 0)) {
223 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
224 return 3;
225 }
227 long seed = os::random();
228 tty->print_cr("Random seed is %ld", seed);
229 os::init_random(seed);
231 for (size_t i = 0; i < iterations; i++) {
233 // Whether we will shrink or grow
234 bool shrink = os::random() % 2L == 0;
236 // Get random delta to resize virtual space
237 size_t delta = (size_t)os::random() % magnitude;
239 // If we are about to shrink virtual space below zero, then expand instead
240 if (shrink && vs.committed_size() < delta) {
241 shrink = false;
242 }
244 // Resizing by delta
245 if (shrink) {
246 vs.shrink_by(delta);
247 } else {
248 // If expanding fails expand_by will silently return false
249 vs.expand_by(delta, true);
250 }
251 }
252 return 0;
253 }
255 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
256 jlong reserved_space_size, jlong magnitude, jlong iterations))
257 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
258 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
259 iterations);
260 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
261 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
262 return 1;
263 }
265 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
266 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
267 if (sizeof(size_t) < sizeof(jlong)) {
268 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
269 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
270 || iterations > size_t_max_value) {
271 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
272 return 2;
273 }
274 }
276 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
277 (size_t) magnitude, (size_t) iterations);
278 WB_END
280 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
281 oop p = JNIHandles::resolve(obj);
282 #if INCLUDE_ALL_GCS
283 if (UseG1GC) {
284 G1CollectedHeap* g1 = G1CollectedHeap::heap();
285 const HeapRegion* hr = g1->heap_region_containing(p);
286 if (hr == NULL) {
287 return false;
288 }
289 return !(hr->is_young());
290 } else if (UseParallelGC) {
291 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
292 return !psh->is_in_young(p);
293 }
294 #endif // INCLUDE_ALL_GCS
295 GenCollectedHeap* gch = GenCollectedHeap::heap();
296 return !gch->is_in_young(p);
297 WB_END
299 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
300 oop p = JNIHandles::resolve(obj);
301 return p->size() * HeapWordSize;
302 WB_END
304 #if INCLUDE_ALL_GCS
305 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
306 G1CollectedHeap* g1 = G1CollectedHeap::heap();
307 oop result = JNIHandles::resolve(obj);
308 const HeapRegion* hr = g1->heap_region_containing(result);
309 return hr->isHumongous();
310 WB_END
312 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
313 G1CollectedHeap* g1 = G1CollectedHeap::heap();
314 size_t nr = g1->num_free_regions();
315 return (jlong)nr;
316 WB_END
318 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
319 G1CollectedHeap* g1 = G1CollectedHeap::heap();
320 ConcurrentMark* cm = g1->concurrent_mark();
321 return cm->concurrent_marking_in_progress();
322 WB_END
324 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
325 return (jint)HeapRegion::GrainBytes;
326 WB_END
327 #endif // INCLUDE_ALL_GCS
329 #if INCLUDE_NMT
330 // Alloc memory using the test memory type so that we can use that to see if
331 // NMT picks it up correctly
332 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
333 jlong addr = 0;
334 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
335 return addr;
336 WB_END
338 // Alloc memory with pseudo call stack. The test can create psudo malloc
339 // allocation site to stress the malloc tracking.
340 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
341 address pc = (address)(size_t)pseudo_stack;
342 NativeCallStack stack(&pc, 1);
343 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
344 WB_END
346 // Free the memory allocated by NMTAllocTest
347 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
348 os::free((void*)(uintptr_t)mem, mtTest);
349 WB_END
351 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
352 jlong addr = 0;
354 addr = (jlong)(uintptr_t)os::reserve_memory(size);
355 MemTracker::record_virtual_memory_type((address)addr, mtTest);
357 return addr;
358 WB_END
361 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
362 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
363 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
364 WB_END
366 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
367 os::uncommit_memory((char *)(uintptr_t)addr, size);
368 WB_END
370 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
371 os::release_memory((char *)(uintptr_t)addr, size);
372 WB_END
374 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
375 return MemTracker::tracking_level() == NMT_detail;
376 WB_END
378 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
379 // Test that we can downgrade NMT levels but not upgrade them.
380 if (MemTracker::tracking_level() == NMT_off) {
381 MemTracker::transition_to(NMT_off);
382 return MemTracker::tracking_level() == NMT_off;
383 } else {
384 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
385 MemTracker::transition_to(NMT_summary);
386 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
388 // Can't go to detail once NMT is set to summary.
389 MemTracker::transition_to(NMT_detail);
390 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
392 // Shutdown sets tracking level to minimal.
393 MemTracker::shutdown();
394 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
396 // Once the tracking level is minimal, we cannot increase to summary.
397 // The code ignores this request instead of asserting because if the malloc site
398 // table overflows in another thread, it tries to change the code to summary.
399 MemTracker::transition_to(NMT_summary);
400 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
402 // Really can never go up to detail, verify that the code would never do this.
403 MemTracker::transition_to(NMT_detail);
404 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
405 return MemTracker::tracking_level() == NMT_minimal;
406 }
407 WB_END
409 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
410 int hash_size = MallocSiteTable::hash_buckets();
411 assert(hash_size > 0, "NMT hash_size should be > 0");
412 return (jint)hash_size;
413 WB_END
414 #endif // INCLUDE_NMT
416 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
417 assert(method != NULL, "method should not be null");
418 ThreadToNativeFromVM ttn(thread);
419 return env->FromReflectedMethod(method);
420 }
422 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
423 MutexLockerEx mu(Compile_lock);
424 CodeCache::mark_all_nmethods_for_deoptimization();
425 VM_Deoptimize op;
426 VMThread::execute(&op);
427 WB_END
429 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
430 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
431 int result = 0;
432 CHECK_JNI_EXCEPTION_(env, result);
433 MutexLockerEx mu(Compile_lock);
434 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
435 if (is_osr) {
436 result += mh->mark_osr_nmethods();
437 } else if (mh->code() != NULL) {
438 mh->code()->mark_for_deoptimization();
439 ++result;
440 }
441 result += CodeCache::mark_for_deoptimization(mh());
442 if (result > 0) {
443 VM_Deoptimize op;
444 VMThread::execute(&op);
445 }
446 return result;
447 WB_END
449 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
450 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
451 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
452 MutexLockerEx mu(Compile_lock);
453 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
454 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
455 if (code == NULL) {
456 return JNI_FALSE;
457 }
458 return (code->is_alive() && !code->is_marked_for_deoptimization());
459 WB_END
461 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
462 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
463 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
464 MutexLockerEx mu(Compile_lock);
465 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
466 if (is_osr) {
467 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
468 } else {
469 return CompilationPolicy::can_be_compiled(mh, comp_level);
470 }
471 WB_END
473 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
474 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
475 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
476 MutexLockerEx mu(Compile_lock);
477 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
478 return mh->queued_for_compilation();
479 WB_END
481 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
482 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
483 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
484 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
485 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
486 return (code != NULL ? code->comp_level() : CompLevel_none);
487 WB_END
489 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
490 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
491 CHECK_JNI_EXCEPTION(env);
492 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
493 if (is_osr) {
494 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
495 } else {
496 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
497 }
498 WB_END
500 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
501 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
502 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
503 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
504 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
505 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
506 WB_END
508 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
509 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
510 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
511 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
512 bool result = mh->dont_inline();
513 mh->set_dont_inline(value == JNI_TRUE);
514 return result;
515 WB_END
517 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
518 if (comp_level == CompLevel_any) {
519 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
520 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
521 } else {
522 return CompileBroker::queue_size(comp_level);
523 }
524 WB_END
526 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
527 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
528 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
529 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
530 bool result = mh->force_inline();
531 mh->set_force_inline(value == JNI_TRUE);
532 return result;
533 WB_END
535 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
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 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
540 MutexLockerEx mu(Compile_lock);
541 return (mh->queued_for_compilation() || nm != NULL);
542 WB_END
544 class VM_WhiteBoxOperation : public VM_Operation {
545 public:
546 VM_WhiteBoxOperation() { }
547 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
548 bool allow_nested_vm_operations() const { return true; }
549 };
551 class AlwaysFalseClosure : public BoolObjectClosure {
552 public:
553 bool do_object_b(oop p) { return false; }
554 };
556 static AlwaysFalseClosure always_false;
558 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
559 public:
560 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
561 void doit() {
562 _mdo->clean_method_data(&always_false);
563 }
564 private:
565 MethodData* _mdo;
566 };
568 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
569 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
570 CHECK_JNI_EXCEPTION(env);
571 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
572 MutexLockerEx mu(Compile_lock);
573 MethodData* mdo = mh->method_data();
574 MethodCounters* mcs = mh->method_counters();
576 if (mdo != NULL) {
577 mdo->init();
578 ResourceMark rm;
579 int arg_count = mdo->method()->size_of_parameters();
580 for (int i = 0; i < arg_count; i++) {
581 mdo->set_arg_modified(i, 0);
582 }
583 VM_WhiteBoxCleanMethodData op(mdo);
584 VMThread::execute(&op);
585 }
587 mh->clear_not_c1_compilable();
588 mh->clear_not_c2_compilable();
589 mh->clear_not_c2_osr_compilable();
590 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
591 if (mcs != NULL) {
592 mcs->backedge_counter()->init();
593 mcs->invocation_counter()->init();
594 mcs->set_interpreter_invocation_count(0);
595 mcs->set_interpreter_throwout_count(0);
597 #ifdef TIERED
598 mcs->set_rate(0.0F);
599 mh->set_prev_event_count(0);
600 mh->set_prev_time(0);
601 #endif
602 }
603 WB_END
605 template <typename T>
606 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
607 if (name == NULL) {
608 return false;
609 }
610 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
611 const char* flag_name = env->GetStringUTFChars(name, NULL);
612 bool result = (*TAt)(flag_name, value);
613 env->ReleaseStringUTFChars(name, flag_name);
614 return result;
615 }
617 template <typename T>
618 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
619 if (name == NULL) {
620 return false;
621 }
622 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
623 const char* flag_name = env->GetStringUTFChars(name, NULL);
624 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
625 env->ReleaseStringUTFChars(name, flag_name);
626 return result;
627 }
629 template <typename T>
630 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
631 ResourceMark rm(thread);
632 jclass clazz = env->FindClass(name->as_C_string());
633 CHECK_JNI_EXCEPTION_(env, NULL);
634 jmethodID methodID = env->GetStaticMethodID(clazz,
635 vmSymbols::valueOf_name()->as_C_string(),
636 sig->as_C_string());
637 CHECK_JNI_EXCEPTION_(env, NULL);
638 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
639 CHECK_JNI_EXCEPTION_(env, NULL);
640 return result;
641 }
643 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
644 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
645 }
646 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
647 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
648 }
649 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
650 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
651 }
652 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
653 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
654 }*/
655 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
656 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
657 }
659 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
660 bool result;
661 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
662 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
663 return booleanBox(thread, env, result);
664 }
665 return NULL;
666 WB_END
668 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
669 intx result;
670 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
671 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
672 return longBox(thread, env, result);
673 }
674 return NULL;
675 WB_END
677 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
678 uintx result;
679 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
680 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
681 return longBox(thread, env, result);
682 }
683 return NULL;
684 WB_END
686 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
687 uint64_t result;
688 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
689 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
690 return longBox(thread, env, result);
691 }
692 return NULL;
693 WB_END
695 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
696 double result;
697 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
698 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
699 return doubleBox(thread, env, result);
700 }
701 return NULL;
702 WB_END
704 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
705 ccstr ccstrResult;
706 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
707 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
708 jstring result = env->NewStringUTF(ccstrResult);
709 CHECK_JNI_EXCEPTION_(env, NULL);
710 return result;
711 }
712 return NULL;
713 WB_END
715 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
716 bool result = value == JNI_TRUE ? true : false;
717 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
718 WB_END
720 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
721 intx result = value;
722 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
723 WB_END
725 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
726 uintx result = value;
727 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
728 WB_END
730 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
731 uint64_t result = value;
732 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
733 WB_END
735 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
736 double result = value;
737 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
738 WB_END
740 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
741 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
742 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
743 ccstr ccstrResult = ccstrValue;
744 bool needFree;
745 {
746 ThreadInVMfromNative ttvfn(thread); // back to VM
747 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
748 }
749 if (value != NULL) {
750 env->ReleaseStringUTFChars(value, ccstrValue);
751 }
752 if (needFree) {
753 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
754 }
755 WB_END
758 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
759 ResourceMark rm(THREAD);
760 int len;
761 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
762 return (StringTable::lookup(name, len) != NULL);
763 WB_END
765 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
766 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
767 Universe::heap()->collect(GCCause::_last_ditch_collection);
768 #if INCLUDE_ALL_GCS
769 if (UseG1GC) {
770 // Needs to be cleared explicitly for G1
771 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
772 }
773 #endif // INCLUDE_ALL_GCS
774 WB_END
776 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
777 Universe::heap()->collect(GCCause::_wb_young_gc);
778 WB_END
780 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
781 // static+volatile in order to force the read to happen
782 // (not be eliminated by the compiler)
783 static char c;
784 static volatile char* p;
786 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
787 if (p == NULL) {
788 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
789 }
791 c = *p;
792 WB_END
794 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
795 const char* cpu_features = VM_Version::cpu_features();
796 ThreadToNativeFromVM ttn(thread);
797 jstring features_string = env->NewStringUTF(cpu_features);
799 CHECK_JNI_EXCEPTION_(env, NULL);
801 return features_string;
802 WB_END
805 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
806 ResourceMark rm(THREAD);
807 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
808 CHECK_JNI_EXCEPTION_(env, NULL);
809 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
810 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
811 jobjectArray result = NULL;
812 if (code == NULL) {
813 return result;
814 }
815 int insts_size = code->insts_size();
817 ThreadToNativeFromVM ttn(thread);
818 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
819 CHECK_JNI_EXCEPTION_(env, NULL);
820 result = env->NewObjectArray(2, clazz, NULL);
821 if (result == NULL) {
822 return result;
823 }
825 jobject obj = integerBox(thread, env, code->comp_level());
826 CHECK_JNI_EXCEPTION_(env, NULL);
827 env->SetObjectArrayElement(result, 0, obj);
829 jbyteArray insts = env->NewByteArray(insts_size);
830 CHECK_JNI_EXCEPTION_(env, NULL);
831 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
832 env->SetObjectArrayElement(result, 1, insts);
834 return result;
835 WB_END
838 int WhiteBox::array_bytes_to_length(size_t bytes) {
839 return Array<u1>::bytes_to_length(bytes);
840 }
842 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
843 if (size < 0) {
844 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
845 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
846 }
848 oop class_loader_oop = JNIHandles::resolve(class_loader);
849 ClassLoaderData* cld = class_loader_oop != NULL
850 ? java_lang_ClassLoader::loader_data(class_loader_oop)
851 : ClassLoaderData::the_null_class_loader_data();
853 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
855 return (jlong)(uintptr_t)metadata;
856 WB_END
858 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
859 oop class_loader_oop = JNIHandles::resolve(class_loader);
860 ClassLoaderData* cld = class_loader_oop != NULL
861 ? java_lang_ClassLoader::loader_data(class_loader_oop)
862 : ClassLoaderData::the_null_class_loader_data();
864 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
865 WB_END
867 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
868 if (inc < 0) {
869 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
870 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
871 }
873 jlong max_size_t = (jlong) ((size_t) -1);
874 if (inc > max_size_t) {
875 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
876 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
877 }
879 size_t new_cap_until_GC = 0;
880 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
881 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
882 if (!success) {
883 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
884 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
885 "due to contention with another thread");
886 }
887 return (jlong) new_cap_until_GC;
888 WB_END
890 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
891 return (jlong) MetaspaceGC::capacity_until_GC();
892 WB_END
894 //Some convenience methods to deal with objects from java
895 int WhiteBox::offset_for_field(const char* field_name, oop object,
896 Symbol* signature_symbol) {
897 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
898 Thread* THREAD = Thread::current();
900 //Get the class of our object
901 Klass* arg_klass = object->klass();
902 //Turn it into an instance-klass
903 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
905 //Create symbols to look for in the class
906 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
907 THREAD);
909 //To be filled in with an offset of the field we're looking for
910 fieldDescriptor fd;
912 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
913 if (res == NULL) {
914 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
915 name_symbol->as_C_string());
916 fatal("Invalid layout of preloaded class");
917 }
919 //fetch the field at the offset we've found
920 int dest_offset = fd.offset();
922 return dest_offset;
923 }
926 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
927 int offset = offset_for_field(field_name, object,
928 vmSymbols::string_signature());
929 oop string = object->obj_field(offset);
930 if (string == NULL) {
931 return NULL;
932 }
933 const char* ret = java_lang_String::as_utf8_string(string);
934 return ret;
935 }
937 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
938 int offset =
939 offset_for_field(field_name, object, vmSymbols::bool_signature());
940 bool ret = (object->bool_field(offset) == JNI_TRUE);
941 return ret;
942 }
944 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
945 ResourceMark rm;
946 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
948 // one by one registration natives for exception catching
949 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
950 CHECK_JNI_EXCEPTION(env);
951 for (int i = 0, n = method_count; i < n; ++i) {
952 // Skip dummy entries
953 if (method_array[i].fnPtr == NULL) continue;
954 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
955 jthrowable throwable_obj = env->ExceptionOccurred();
956 if (throwable_obj != NULL) {
957 env->ExceptionClear();
958 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
959 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
960 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
961 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
962 method_array[i].name, method_array[i].signature);
963 }
964 } else {
965 // Registration failed unexpectedly.
966 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
967 method_array[i].name, method_array[i].signature);
968 env->UnregisterNatives(wbclass);
969 break;
970 }
971 }
972 }
973 }
975 #define CC (char*)
977 static JNINativeMethod methods[] = {
978 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
979 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
980 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
981 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
982 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
983 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
984 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
985 {CC"classKnownToNotExist",
986 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
987 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs},
988 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
989 (void*)&WB_GetLookupCacheMatches},
990 {CC"parseCommandLine",
991 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
992 (void*) &WB_ParseCommandLine
993 },
994 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
995 (void*)&WB_AddToBootstrapClassLoaderSearch},
996 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
997 (void*)&WB_AddToSystemClassLoaderSearch},
998 {CC"getCompressedOopsMaxHeapSize", CC"()J",
999 (void*)&WB_GetCompressedOopsMaxHeapSize},
1000 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1001 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1002 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1003 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1004 #if INCLUDE_ALL_GCS
1005 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1006 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1007 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1008 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1009 #endif // INCLUDE_ALL_GCS
1010 #if INCLUDE_NMT
1011 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1012 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1013 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1014 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1015 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1016 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1017 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1018 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported},
1019 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1020 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1021 #endif // INCLUDE_NMT
1022 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1023 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
1024 (void*)&WB_DeoptimizeMethod },
1025 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z",
1026 (void*)&WB_IsMethodCompiled },
1027 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1028 (void*)&WB_IsMethodCompilable},
1029 {CC"isMethodQueuedForCompilation",
1030 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1031 {CC"makeMethodNotCompilable",
1032 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1033 {CC"testSetDontInlineMethod",
1034 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1035 {CC"getMethodCompilationLevel",
1036 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1037 {CC"getMethodEntryBci",
1038 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1039 {CC"getCompileQueueSize",
1040 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1041 {CC"testSetForceInlineMethod",
1042 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1043 {CC"enqueueMethodForCompilation",
1044 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1045 {CC"clearMethodState",
1046 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1047 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1048 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1049 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1050 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1051 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1052 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1053 (void*)&WB_SetStringVMFlag},
1054 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1055 (void*)&WB_GetBooleanVMFlag},
1056 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1057 (void*)&WB_GetIntxVMFlag},
1058 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1059 (void*)&WB_GetUintxVMFlag},
1060 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1061 (void*)&WB_GetUint64VMFlag},
1062 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1063 (void*)&WB_GetDoubleVMFlag},
1064 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1065 (void*)&WB_GetStringVMFlag},
1066 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1067 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1068 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1069 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1070 {CC"allocateMetaspace",
1071 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1072 {CC"freeMetaspace",
1073 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1074 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1075 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1076 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1077 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1078 (void*)&WB_GetNMethod },
1079 };
1081 #undef CC
1083 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1084 {
1085 if (WhiteBoxAPI) {
1086 // Make sure that wbclass is loaded by the null classloader
1087 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1088 Handle loader(ikh->class_loader());
1089 if (loader.is_null()) {
1090 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1091 WhiteBox::register_extended(env, wbclass, thread);
1092 WhiteBox::set_used();
1093 }
1094 }
1095 }
1096 JVM_END
