Wed, 19 Nov 2014 19:31:13 -0800
8065346: WB_AddToBootstrapClassLoaderSearch calls JvmtiEnv::create_a_jvmti when not in _thread_in_vm state
Summary: Removed ThreadToNativeFromVM and use java_lang_String::as_utf8_string instead
Reviewed-by: 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 ResourceMark rm;
133 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
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 #endif
138 }
139 WB_END
141 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
142 #if INCLUDE_JVMTI
143 ResourceMark rm;
144 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
145 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
146 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
147 assert(err == JVMTI_ERROR_NONE, "must not fail");
148 #endif
149 }
150 WB_END
153 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
154 return (jlong)Arguments::max_heap_for_compressed_oops();
155 }
156 WB_END
158 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
159 CollectorPolicy * p = Universe::heap()->collector_policy();
160 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
161 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
162 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
163 p->space_alignment(), p->heap_alignment());
164 }
165 WB_END
167 #ifndef PRODUCT
168 // Forward declaration
169 void TestReservedSpace_test();
170 void TestReserveMemorySpecial_test();
171 void TestVirtualSpace_test();
172 void TestMetaspaceAux_test();
173 #endif
175 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
176 #ifndef PRODUCT
177 TestReservedSpace_test();
178 TestReserveMemorySpecial_test();
179 TestVirtualSpace_test();
180 TestMetaspaceAux_test();
181 #endif
182 WB_END
184 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
185 size_t granularity = os::vm_allocation_granularity();
186 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
187 VirtualSpace vs;
188 vs.initialize(rhs, 50 * granularity);
190 //Check if constraints are complied
191 if (!( UseCompressedOops && rhs.base() != NULL &&
192 Universe::narrow_oop_base() != NULL &&
193 Universe::narrow_oop_use_implicit_null_checks() )) {
194 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
195 "\tUseCompressedOops is %d\n"
196 "\trhs.base() is "PTR_FORMAT"\n"
197 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
198 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
199 UseCompressedOops,
200 rhs.base(),
201 Universe::narrow_oop_base(),
202 Universe::narrow_oop_use_implicit_null_checks());
203 return;
204 }
205 tty->print_cr("Reading from no access area... ");
206 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
207 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
208 WB_END
210 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
211 size_t magnitude, size_t iterations) {
212 size_t granularity = os::vm_allocation_granularity();
213 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
214 VirtualSpace vs;
215 if (!vs.initialize(rhs, 0)) {
216 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
217 return 3;
218 }
220 long seed = os::random();
221 tty->print_cr("Random seed is %ld", seed);
222 os::init_random(seed);
224 for (size_t i = 0; i < iterations; i++) {
226 // Whether we will shrink or grow
227 bool shrink = os::random() % 2L == 0;
229 // Get random delta to resize virtual space
230 size_t delta = (size_t)os::random() % magnitude;
232 // If we are about to shrink virtual space below zero, then expand instead
233 if (shrink && vs.committed_size() < delta) {
234 shrink = false;
235 }
237 // Resizing by delta
238 if (shrink) {
239 vs.shrink_by(delta);
240 } else {
241 // If expanding fails expand_by will silently return false
242 vs.expand_by(delta, true);
243 }
244 }
245 return 0;
246 }
248 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
249 jlong reserved_space_size, jlong magnitude, jlong iterations))
250 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
251 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
252 iterations);
253 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
254 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
255 return 1;
256 }
258 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
259 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
260 if (sizeof(size_t) < sizeof(jlong)) {
261 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
262 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
263 || iterations > size_t_max_value) {
264 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
265 return 2;
266 }
267 }
269 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
270 (size_t) magnitude, (size_t) iterations);
271 WB_END
273 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
274 oop p = JNIHandles::resolve(obj);
275 #if INCLUDE_ALL_GCS
276 if (UseG1GC) {
277 G1CollectedHeap* g1 = G1CollectedHeap::heap();
278 const HeapRegion* hr = g1->heap_region_containing(p);
279 if (hr == NULL) {
280 return false;
281 }
282 return !(hr->is_young());
283 } else if (UseParallelGC) {
284 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
285 return !psh->is_in_young(p);
286 }
287 #endif // INCLUDE_ALL_GCS
288 GenCollectedHeap* gch = GenCollectedHeap::heap();
289 return !gch->is_in_young(p);
290 WB_END
292 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
293 oop p = JNIHandles::resolve(obj);
294 return p->size() * HeapWordSize;
295 WB_END
297 #if INCLUDE_ALL_GCS
298 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
299 G1CollectedHeap* g1 = G1CollectedHeap::heap();
300 oop result = JNIHandles::resolve(obj);
301 const HeapRegion* hr = g1->heap_region_containing(result);
302 return hr->isHumongous();
303 WB_END
305 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
306 G1CollectedHeap* g1 = G1CollectedHeap::heap();
307 size_t nr = g1->num_free_regions();
308 return (jlong)nr;
309 WB_END
311 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
312 G1CollectedHeap* g1 = G1CollectedHeap::heap();
313 ConcurrentMark* cm = g1->concurrent_mark();
314 return cm->concurrent_marking_in_progress();
315 WB_END
317 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
318 return (jint)HeapRegion::GrainBytes;
319 WB_END
320 #endif // INCLUDE_ALL_GCS
322 #if INCLUDE_NMT
323 // Alloc memory using the test memory type so that we can use that to see if
324 // NMT picks it up correctly
325 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
326 jlong addr = 0;
327 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
328 return addr;
329 WB_END
331 // Alloc memory with pseudo call stack. The test can create psudo malloc
332 // allocation site to stress the malloc tracking.
333 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
334 address pc = (address)(size_t)pseudo_stack;
335 NativeCallStack stack(&pc, 1);
336 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
337 WB_END
339 // Free the memory allocated by NMTAllocTest
340 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
341 os::free((void*)(uintptr_t)mem, mtTest);
342 WB_END
344 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
345 jlong addr = 0;
347 addr = (jlong)(uintptr_t)os::reserve_memory(size);
348 MemTracker::record_virtual_memory_type((address)addr, mtTest);
350 return addr;
351 WB_END
354 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
355 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
356 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
357 WB_END
359 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
360 os::uncommit_memory((char *)(uintptr_t)addr, size);
361 WB_END
363 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
364 os::release_memory((char *)(uintptr_t)addr, size);
365 WB_END
367 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
368 return MemTracker::tracking_level() == NMT_detail;
369 WB_END
371 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
372 // Test that we can downgrade NMT levels but not upgrade them.
373 if (MemTracker::tracking_level() == NMT_off) {
374 MemTracker::transition_to(NMT_off);
375 return MemTracker::tracking_level() == NMT_off;
376 } else {
377 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
378 MemTracker::transition_to(NMT_summary);
379 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
381 // Can't go to detail once NMT is set to summary.
382 MemTracker::transition_to(NMT_detail);
383 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
385 // Shutdown sets tracking level to minimal.
386 MemTracker::shutdown();
387 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
389 // Once the tracking level is minimal, we cannot increase to summary.
390 // The code ignores this request instead of asserting because if the malloc site
391 // table overflows in another thread, it tries to change the code to summary.
392 MemTracker::transition_to(NMT_summary);
393 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
395 // Really can never go up to detail, verify that the code would never do this.
396 MemTracker::transition_to(NMT_detail);
397 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
398 return MemTracker::tracking_level() == NMT_minimal;
399 }
400 WB_END
402 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
403 int hash_size = MallocSiteTable::hash_buckets();
404 assert(hash_size > 0, "NMT hash_size should be > 0");
405 return (jint)hash_size;
406 WB_END
407 #endif // INCLUDE_NMT
409 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
410 assert(method != NULL, "method should not be null");
411 ThreadToNativeFromVM ttn(thread);
412 return env->FromReflectedMethod(method);
413 }
415 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
416 MutexLockerEx mu(Compile_lock);
417 CodeCache::mark_all_nmethods_for_deoptimization();
418 VM_Deoptimize op;
419 VMThread::execute(&op);
420 WB_END
422 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
423 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
424 int result = 0;
425 CHECK_JNI_EXCEPTION_(env, result);
426 MutexLockerEx mu(Compile_lock);
427 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
428 if (is_osr) {
429 result += mh->mark_osr_nmethods();
430 } else if (mh->code() != NULL) {
431 mh->code()->mark_for_deoptimization();
432 ++result;
433 }
434 result += CodeCache::mark_for_deoptimization(mh());
435 if (result > 0) {
436 VM_Deoptimize op;
437 VMThread::execute(&op);
438 }
439 return result;
440 WB_END
442 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
443 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
444 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
445 MutexLockerEx mu(Compile_lock);
446 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
447 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
448 if (code == NULL) {
449 return JNI_FALSE;
450 }
451 return (code->is_alive() && !code->is_marked_for_deoptimization());
452 WB_END
454 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
455 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
456 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
457 MutexLockerEx mu(Compile_lock);
458 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
459 if (is_osr) {
460 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
461 } else {
462 return CompilationPolicy::can_be_compiled(mh, comp_level);
463 }
464 WB_END
466 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
467 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
468 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
469 MutexLockerEx mu(Compile_lock);
470 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
471 return mh->queued_for_compilation();
472 WB_END
474 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
475 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
476 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
477 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
478 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
479 return (code != NULL ? code->comp_level() : CompLevel_none);
480 WB_END
482 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
483 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
484 CHECK_JNI_EXCEPTION(env);
485 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
486 if (is_osr) {
487 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
488 } else {
489 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
490 }
491 WB_END
493 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
494 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
495 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
496 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
497 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
498 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
499 WB_END
501 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
502 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
503 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
504 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
505 bool result = mh->dont_inline();
506 mh->set_dont_inline(value == JNI_TRUE);
507 return result;
508 WB_END
510 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
511 if (comp_level == CompLevel_any) {
512 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
513 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
514 } else {
515 return CompileBroker::queue_size(comp_level);
516 }
517 WB_END
519 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
520 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
521 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
522 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
523 bool result = mh->force_inline();
524 mh->set_force_inline(value == JNI_TRUE);
525 return result;
526 WB_END
528 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
529 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
530 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
531 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
532 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
533 MutexLockerEx mu(Compile_lock);
534 return (mh->queued_for_compilation() || nm != NULL);
535 WB_END
537 class VM_WhiteBoxOperation : public VM_Operation {
538 public:
539 VM_WhiteBoxOperation() { }
540 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
541 bool allow_nested_vm_operations() const { return true; }
542 };
544 class AlwaysFalseClosure : public BoolObjectClosure {
545 public:
546 bool do_object_b(oop p) { return false; }
547 };
549 static AlwaysFalseClosure always_false;
551 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
552 public:
553 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
554 void doit() {
555 _mdo->clean_method_data(&always_false);
556 }
557 private:
558 MethodData* _mdo;
559 };
561 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
562 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
563 CHECK_JNI_EXCEPTION(env);
564 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
565 MutexLockerEx mu(Compile_lock);
566 MethodData* mdo = mh->method_data();
567 MethodCounters* mcs = mh->method_counters();
569 if (mdo != NULL) {
570 mdo->init();
571 ResourceMark rm;
572 int arg_count = mdo->method()->size_of_parameters();
573 for (int i = 0; i < arg_count; i++) {
574 mdo->set_arg_modified(i, 0);
575 }
576 VM_WhiteBoxCleanMethodData op(mdo);
577 VMThread::execute(&op);
578 }
580 mh->clear_not_c1_compilable();
581 mh->clear_not_c2_compilable();
582 mh->clear_not_c2_osr_compilable();
583 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
584 if (mcs != NULL) {
585 mcs->backedge_counter()->init();
586 mcs->invocation_counter()->init();
587 mcs->set_interpreter_invocation_count(0);
588 mcs->set_interpreter_throwout_count(0);
590 #ifdef TIERED
591 mcs->set_rate(0.0F);
592 mh->set_prev_event_count(0);
593 mh->set_prev_time(0);
594 #endif
595 }
596 WB_END
598 template <typename T>
599 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
600 if (name == NULL) {
601 return false;
602 }
603 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
604 const char* flag_name = env->GetStringUTFChars(name, NULL);
605 bool result = (*TAt)(flag_name, value);
606 env->ReleaseStringUTFChars(name, flag_name);
607 return result;
608 }
610 template <typename T>
611 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
612 if (name == NULL) {
613 return false;
614 }
615 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
616 const char* flag_name = env->GetStringUTFChars(name, NULL);
617 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
618 env->ReleaseStringUTFChars(name, flag_name);
619 return result;
620 }
622 template <typename T>
623 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
624 ResourceMark rm(thread);
625 jclass clazz = env->FindClass(name->as_C_string());
626 CHECK_JNI_EXCEPTION_(env, NULL);
627 jmethodID methodID = env->GetStaticMethodID(clazz,
628 vmSymbols::valueOf_name()->as_C_string(),
629 sig->as_C_string());
630 CHECK_JNI_EXCEPTION_(env, NULL);
631 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
632 CHECK_JNI_EXCEPTION_(env, NULL);
633 return result;
634 }
636 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
637 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
638 }
639 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
640 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
641 }
642 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
643 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
644 }
645 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
646 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
647 }*/
648 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
649 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
650 }
652 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
653 bool result;
654 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
655 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
656 return booleanBox(thread, env, result);
657 }
658 return NULL;
659 WB_END
661 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
662 intx result;
663 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
664 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
665 return longBox(thread, env, result);
666 }
667 return NULL;
668 WB_END
670 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
671 uintx result;
672 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
673 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
674 return longBox(thread, env, result);
675 }
676 return NULL;
677 WB_END
679 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
680 uint64_t result;
681 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
682 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
683 return longBox(thread, env, result);
684 }
685 return NULL;
686 WB_END
688 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
689 double result;
690 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
691 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
692 return doubleBox(thread, env, result);
693 }
694 return NULL;
695 WB_END
697 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
698 ccstr ccstrResult;
699 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
700 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
701 jstring result = env->NewStringUTF(ccstrResult);
702 CHECK_JNI_EXCEPTION_(env, NULL);
703 return result;
704 }
705 return NULL;
706 WB_END
708 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
709 bool result = value == JNI_TRUE ? true : false;
710 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
711 WB_END
713 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
714 intx result = value;
715 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
716 WB_END
718 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
719 uintx result = value;
720 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
721 WB_END
723 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
724 uint64_t result = value;
725 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
726 WB_END
728 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
729 double result = value;
730 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
731 WB_END
733 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
734 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
735 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
736 ccstr ccstrResult = ccstrValue;
737 bool needFree;
738 {
739 ThreadInVMfromNative ttvfn(thread); // back to VM
740 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
741 }
742 if (value != NULL) {
743 env->ReleaseStringUTFChars(value, ccstrValue);
744 }
745 if (needFree) {
746 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
747 }
748 WB_END
751 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
752 ResourceMark rm(THREAD);
753 int len;
754 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
755 return (StringTable::lookup(name, len) != NULL);
756 WB_END
758 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
759 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
760 Universe::heap()->collect(GCCause::_last_ditch_collection);
761 #if INCLUDE_ALL_GCS
762 if (UseG1GC) {
763 // Needs to be cleared explicitly for G1
764 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
765 }
766 #endif // INCLUDE_ALL_GCS
767 WB_END
769 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
770 Universe::heap()->collect(GCCause::_wb_young_gc);
771 WB_END
773 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
774 // static+volatile in order to force the read to happen
775 // (not be eliminated by the compiler)
776 static char c;
777 static volatile char* p;
779 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
780 if (p == NULL) {
781 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
782 }
784 c = *p;
785 WB_END
787 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
788 const char* cpu_features = VM_Version::cpu_features();
789 ThreadToNativeFromVM ttn(thread);
790 jstring features_string = env->NewStringUTF(cpu_features);
792 CHECK_JNI_EXCEPTION_(env, NULL);
794 return features_string;
795 WB_END
798 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
799 ResourceMark rm(THREAD);
800 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
801 CHECK_JNI_EXCEPTION_(env, NULL);
802 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
803 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
804 jobjectArray result = NULL;
805 if (code == NULL) {
806 return result;
807 }
808 int insts_size = code->insts_size();
810 ThreadToNativeFromVM ttn(thread);
811 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
812 CHECK_JNI_EXCEPTION_(env, NULL);
813 result = env->NewObjectArray(2, clazz, NULL);
814 if (result == NULL) {
815 return result;
816 }
818 jobject obj = integerBox(thread, env, code->comp_level());
819 CHECK_JNI_EXCEPTION_(env, NULL);
820 env->SetObjectArrayElement(result, 0, obj);
822 jbyteArray insts = env->NewByteArray(insts_size);
823 CHECK_JNI_EXCEPTION_(env, NULL);
824 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
825 env->SetObjectArrayElement(result, 1, insts);
827 return result;
828 WB_END
831 int WhiteBox::array_bytes_to_length(size_t bytes) {
832 return Array<u1>::bytes_to_length(bytes);
833 }
835 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
836 if (size < 0) {
837 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
838 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
839 }
841 oop class_loader_oop = JNIHandles::resolve(class_loader);
842 ClassLoaderData* cld = class_loader_oop != NULL
843 ? java_lang_ClassLoader::loader_data(class_loader_oop)
844 : ClassLoaderData::the_null_class_loader_data();
846 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
848 return (jlong)(uintptr_t)metadata;
849 WB_END
851 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
852 oop class_loader_oop = JNIHandles::resolve(class_loader);
853 ClassLoaderData* cld = class_loader_oop != NULL
854 ? java_lang_ClassLoader::loader_data(class_loader_oop)
855 : ClassLoaderData::the_null_class_loader_data();
857 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
858 WB_END
860 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
861 if (inc < 0) {
862 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
863 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
864 }
866 jlong max_size_t = (jlong) ((size_t) -1);
867 if (inc > max_size_t) {
868 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
869 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
870 }
872 size_t new_cap_until_GC = 0;
873 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
874 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
875 if (!success) {
876 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
877 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
878 "due to contention with another thread");
879 }
880 return (jlong) new_cap_until_GC;
881 WB_END
883 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
884 return (jlong) MetaspaceGC::capacity_until_GC();
885 WB_END
887 //Some convenience methods to deal with objects from java
888 int WhiteBox::offset_for_field(const char* field_name, oop object,
889 Symbol* signature_symbol) {
890 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
891 Thread* THREAD = Thread::current();
893 //Get the class of our object
894 Klass* arg_klass = object->klass();
895 //Turn it into an instance-klass
896 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
898 //Create symbols to look for in the class
899 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
900 THREAD);
902 //To be filled in with an offset of the field we're looking for
903 fieldDescriptor fd;
905 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
906 if (res == NULL) {
907 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
908 name_symbol->as_C_string());
909 fatal("Invalid layout of preloaded class");
910 }
912 //fetch the field at the offset we've found
913 int dest_offset = fd.offset();
915 return dest_offset;
916 }
919 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
920 int offset = offset_for_field(field_name, object,
921 vmSymbols::string_signature());
922 oop string = object->obj_field(offset);
923 if (string == NULL) {
924 return NULL;
925 }
926 const char* ret = java_lang_String::as_utf8_string(string);
927 return ret;
928 }
930 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
931 int offset =
932 offset_for_field(field_name, object, vmSymbols::bool_signature());
933 bool ret = (object->bool_field(offset) == JNI_TRUE);
934 return ret;
935 }
937 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
938 ResourceMark rm;
939 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
941 // one by one registration natives for exception catching
942 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
943 CHECK_JNI_EXCEPTION(env);
944 for (int i = 0, n = method_count; i < n; ++i) {
945 // Skip dummy entries
946 if (method_array[i].fnPtr == NULL) continue;
947 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
948 jthrowable throwable_obj = env->ExceptionOccurred();
949 if (throwable_obj != NULL) {
950 env->ExceptionClear();
951 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
952 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
953 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
954 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
955 method_array[i].name, method_array[i].signature);
956 }
957 } else {
958 // Registration failed unexpectedly.
959 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
960 method_array[i].name, method_array[i].signature);
961 env->UnregisterNatives(wbclass);
962 break;
963 }
964 }
965 }
966 }
968 #define CC (char*)
970 static JNINativeMethod methods[] = {
971 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
972 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
973 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
974 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
975 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
976 {CC"classKnownToNotExist",
977 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
978 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs},
979 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
980 (void*)&WB_GetLookupCacheMatches},
981 {CC"parseCommandLine",
982 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
983 (void*) &WB_ParseCommandLine
984 },
985 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
986 (void*)&WB_AddToBootstrapClassLoaderSearch},
987 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
988 (void*)&WB_AddToSystemClassLoaderSearch},
989 {CC"getCompressedOopsMaxHeapSize", CC"()J",
990 (void*)&WB_GetCompressedOopsMaxHeapSize},
991 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
992 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
993 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
994 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
995 #if INCLUDE_ALL_GCS
996 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
997 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
998 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
999 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1000 #endif // INCLUDE_ALL_GCS
1001 #if INCLUDE_NMT
1002 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1003 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1004 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1005 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1006 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1007 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1008 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1009 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported},
1010 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1011 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1012 #endif // INCLUDE_NMT
1013 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1014 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
1015 (void*)&WB_DeoptimizeMethod },
1016 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z",
1017 (void*)&WB_IsMethodCompiled },
1018 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1019 (void*)&WB_IsMethodCompilable},
1020 {CC"isMethodQueuedForCompilation",
1021 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1022 {CC"makeMethodNotCompilable",
1023 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1024 {CC"testSetDontInlineMethod",
1025 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1026 {CC"getMethodCompilationLevel",
1027 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1028 {CC"getMethodEntryBci",
1029 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1030 {CC"getCompileQueueSize",
1031 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1032 {CC"testSetForceInlineMethod",
1033 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1034 {CC"enqueueMethodForCompilation",
1035 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1036 {CC"clearMethodState",
1037 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1038 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1039 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1040 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1041 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1042 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1043 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1044 (void*)&WB_SetStringVMFlag},
1045 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1046 (void*)&WB_GetBooleanVMFlag},
1047 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1048 (void*)&WB_GetIntxVMFlag},
1049 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1050 (void*)&WB_GetUintxVMFlag},
1051 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1052 (void*)&WB_GetUint64VMFlag},
1053 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1054 (void*)&WB_GetDoubleVMFlag},
1055 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1056 (void*)&WB_GetStringVMFlag},
1057 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1058 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1059 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1060 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1061 {CC"allocateMetaspace",
1062 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1063 {CC"freeMetaspace",
1064 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1065 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1066 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1067 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1068 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1069 (void*)&WB_GetNMethod },
1070 };
1072 #undef CC
1074 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1075 {
1076 if (WhiteBoxAPI) {
1077 // Make sure that wbclass is loaded by the null classloader
1078 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1079 Handle loader(ikh->class_loader());
1080 if (loader.is_null()) {
1081 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1082 WhiteBox::register_extended(env, wbclass, thread);
1083 WhiteBox::set_used();
1084 }
1085 }
1086 }
1087 JVM_END