Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/prims/whitebox.cpp@04d83ba48607
src/share/vm/prims/whitebox.cpp
Thu, 24 May 2018 17:06:56 +0800
- author
- aoqi
- date
- Thu, 24 May 2018 17:06:56 +0800
- changeset 8604
- 04d83ba48607
- parent 8497
- 50e62b688ddc
- parent 7994
- 04ff2f6cd0eb
- child 9203
- 53eec13fbaa5
- permissions
- -rw-r--r--
Merge
1 /*
2 * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
27 #include "memory/metadataFactory.hpp"
28 #include "memory/metaspaceShared.hpp"
29 #include "memory/universe.hpp"
30 #include "oops/oop.inline.hpp"
32 #include "classfile/symbolTable.hpp"
33 #include "classfile/classLoaderData.hpp"
35 #include "prims/whitebox.hpp"
36 #include "prims/wbtestmethods/parserTests.hpp"
38 #include "runtime/arguments.hpp"
39 #include "runtime/interfaceSupport.hpp"
40 #include "runtime/os.hpp"
41 #include "utilities/array.hpp"
42 #include "utilities/debug.hpp"
43 #include "utilities/macros.hpp"
44 #include "utilities/exceptions.hpp"
46 #if INCLUDE_ALL_GCS
47 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp"
48 #include "gc_implementation/g1/concurrentMark.hpp"
49 #include "gc_implementation/g1/concurrentMarkThread.hpp"
50 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
51 #include "gc_implementation/g1/heapRegionRemSet.hpp"
52 #endif // INCLUDE_ALL_GCS
54 #if INCLUDE_NMT
55 #include "services/mallocSiteTable.hpp"
56 #include "services/memTracker.hpp"
57 #include "utilities/nativeCallStack.hpp"
58 #endif // INCLUDE_NMT
60 #include "compiler/compileBroker.hpp"
61 #include "jvmtifiles/jvmtiEnv.hpp"
62 #include "runtime/compilationPolicy.hpp"
64 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
66 #define SIZE_T_MAX_VALUE ((size_t) -1)
68 bool WhiteBox::_used = false;
70 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
71 return (jlong)(void*)JNIHandles::resolve(obj);
72 WB_END
74 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
75 return heapOopSize;
76 WB_END
78 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
79 return os::vm_page_size();
80 WB_END
82 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
83 return os::large_page_size();
84 WB_END
86 class WBIsKlassAliveClosure : public KlassClosure {
87 Symbol* _name;
88 bool _found;
89 public:
90 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
92 void do_klass(Klass* k) {
93 if (_found) return;
94 Symbol* ksym = k->name();
95 if (ksym->fast_compare(_name) == 0) {
96 _found = true;
97 }
98 }
100 bool found() const {
101 return _found;
102 }
103 };
105 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
106 Handle h_name = JNIHandles::resolve(name);
107 if (h_name.is_null()) return false;
108 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
109 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
111 WBIsKlassAliveClosure closure(sym);
112 ClassLoaderDataGraph::classes_do(&closure);
114 return closure.found();
115 WB_END
117 WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name))
118 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
119 const char* class_name = env->GetStringUTFChars(name, NULL);
120 jboolean result = JVM_KnownToNotExist(env, loader, class_name);
121 env->ReleaseStringUTFChars(name, class_name);
122 return result;
123 WB_END
125 WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader))
126 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
127 return JVM_GetResourceLookupCacheURLs(env, loader);
128 WB_END
130 WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name))
131 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
132 const char* resource_name = env->GetStringUTFChars(name, NULL);
133 jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name);
135 env->ReleaseStringUTFChars(name, resource_name);
136 return result;
137 WB_END
139 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
140 #if INCLUDE_JVMTI
141 ResourceMark rm;
142 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
143 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
144 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
145 assert(err == JVMTI_ERROR_NONE, "must not fail");
146 #endif
147 }
148 WB_END
150 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
151 #if INCLUDE_JVMTI
152 ResourceMark rm;
153 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
154 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
155 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
156 assert(err == JVMTI_ERROR_NONE, "must not fail");
157 #endif
158 }
159 WB_END
162 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
163 return (jlong)Arguments::max_heap_for_compressed_oops();
164 }
165 WB_END
167 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
168 CollectorPolicy * p = Universe::heap()->collector_policy();
169 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
170 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
171 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
172 p->space_alignment(), p->heap_alignment());
173 }
174 WB_END
176 #ifndef PRODUCT
177 // Forward declaration
178 void TestReservedSpace_test();
179 void TestReserveMemorySpecial_test();
180 void TestVirtualSpace_test();
181 void TestMetaspaceAux_test();
182 #endif
184 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
185 #ifndef PRODUCT
186 TestReservedSpace_test();
187 TestReserveMemorySpecial_test();
188 TestVirtualSpace_test();
189 TestMetaspaceAux_test();
190 #endif
191 WB_END
193 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
194 size_t granularity = os::vm_allocation_granularity();
195 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
196 VirtualSpace vs;
197 vs.initialize(rhs, 50 * granularity);
199 //Check if constraints are complied
200 if (!( UseCompressedOops && rhs.base() != NULL &&
201 Universe::narrow_oop_base() != NULL &&
202 Universe::narrow_oop_use_implicit_null_checks() )) {
203 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
204 "\tUseCompressedOops is %d\n"
205 "\trhs.base() is "PTR_FORMAT"\n"
206 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
207 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
208 UseCompressedOops,
209 rhs.base(),
210 Universe::narrow_oop_base(),
211 Universe::narrow_oop_use_implicit_null_checks());
212 return;
213 }
214 tty->print_cr("Reading from no access area... ");
215 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
216 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
217 WB_END
219 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
220 size_t magnitude, size_t iterations) {
221 size_t granularity = os::vm_allocation_granularity();
222 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
223 VirtualSpace vs;
224 if (!vs.initialize(rhs, 0)) {
225 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
226 return 3;
227 }
229 long seed = os::random();
230 tty->print_cr("Random seed is %ld", seed);
231 os::init_random(seed);
233 for (size_t i = 0; i < iterations; i++) {
235 // Whether we will shrink or grow
236 bool shrink = os::random() % 2L == 0;
238 // Get random delta to resize virtual space
239 size_t delta = (size_t)os::random() % magnitude;
241 // If we are about to shrink virtual space below zero, then expand instead
242 if (shrink && vs.committed_size() < delta) {
243 shrink = false;
244 }
246 // Resizing by delta
247 if (shrink) {
248 vs.shrink_by(delta);
249 } else {
250 // If expanding fails expand_by will silently return false
251 vs.expand_by(delta, true);
252 }
253 }
254 return 0;
255 }
257 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
258 jlong reserved_space_size, jlong magnitude, jlong iterations))
259 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
260 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
261 iterations);
262 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
263 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
264 return 1;
265 }
267 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
268 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
269 if (sizeof(size_t) < sizeof(jlong)) {
270 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
271 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
272 || iterations > size_t_max_value) {
273 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
274 return 2;
275 }
276 }
278 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
279 (size_t) magnitude, (size_t) iterations);
280 WB_END
282 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
283 oop p = JNIHandles::resolve(obj);
284 #if INCLUDE_ALL_GCS
285 if (UseG1GC) {
286 G1CollectedHeap* g1 = G1CollectedHeap::heap();
287 const HeapRegion* hr = g1->heap_region_containing(p);
288 if (hr == NULL) {
289 return false;
290 }
291 return !(hr->is_young());
292 } else if (UseParallelGC) {
293 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
294 return !psh->is_in_young(p);
295 }
296 #endif // INCLUDE_ALL_GCS
297 GenCollectedHeap* gch = GenCollectedHeap::heap();
298 return !gch->is_in_young(p);
299 WB_END
301 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
302 oop p = JNIHandles::resolve(obj);
303 return p->size() * HeapWordSize;
304 WB_END
306 #if INCLUDE_ALL_GCS
307 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
308 G1CollectedHeap* g1 = G1CollectedHeap::heap();
309 oop result = JNIHandles::resolve(obj);
310 const HeapRegion* hr = g1->heap_region_containing(result);
311 return hr->isHumongous();
312 WB_END
314 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
315 G1CollectedHeap* g1 = G1CollectedHeap::heap();
316 size_t nr = g1->max_regions();
317 return (jlong)nr;
318 WB_END
320 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
321 G1CollectedHeap* g1 = G1CollectedHeap::heap();
322 size_t nr = g1->num_free_regions();
323 return (jlong)nr;
324 WB_END
326 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
327 G1CollectedHeap* g1 = G1CollectedHeap::heap();
328 return g1->concurrent_mark()->cmThread()->during_cycle();
329 WB_END
331 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
332 G1CollectedHeap* g1h = G1CollectedHeap::heap();
333 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
334 g1h->collect(GCCause::_wb_conc_mark);
335 return true;
336 }
337 return false;
338 WB_END
340 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
341 return (jint)HeapRegion::GrainBytes;
342 WB_END
344 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
345 ResourceMark rm(THREAD);
346 G1CollectedHeap* g1h = G1CollectedHeap::heap();
347 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
348 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
349 return JNIHandles::make_local(env, h());
350 WB_END
351 #endif // INCLUDE_ALL_GCS
353 #if INCLUDE_NMT
354 // Alloc memory using the test memory type so that we can use that to see if
355 // NMT picks it up correctly
356 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
357 jlong addr = 0;
358 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
359 return addr;
360 WB_END
362 // Alloc memory with pseudo call stack. The test can create psudo malloc
363 // allocation site to stress the malloc tracking.
364 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
365 address pc = (address)(size_t)pseudo_stack;
366 NativeCallStack stack(&pc, 1);
367 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
368 WB_END
370 // Free the memory allocated by NMTAllocTest
371 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
372 os::free((void*)(uintptr_t)mem, mtTest);
373 WB_END
375 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
376 jlong addr = 0;
378 addr = (jlong)(uintptr_t)os::reserve_memory(size);
379 MemTracker::record_virtual_memory_type((address)addr, mtTest);
381 return addr;
382 WB_END
385 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
386 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
387 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
388 WB_END
390 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
391 os::uncommit_memory((char *)(uintptr_t)addr, size);
392 WB_END
394 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
395 os::release_memory((char *)(uintptr_t)addr, size);
396 WB_END
398 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
399 return MemTracker::tracking_level() == NMT_detail;
400 WB_END
402 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
403 // Test that we can downgrade NMT levels but not upgrade them.
404 if (MemTracker::tracking_level() == NMT_off) {
405 MemTracker::transition_to(NMT_off);
406 return MemTracker::tracking_level() == NMT_off;
407 } else {
408 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
409 MemTracker::transition_to(NMT_summary);
410 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
412 // Can't go to detail once NMT is set to summary.
413 MemTracker::transition_to(NMT_detail);
414 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
416 // Shutdown sets tracking level to minimal.
417 MemTracker::shutdown();
418 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
420 // Once the tracking level is minimal, we cannot increase to summary.
421 // The code ignores this request instead of asserting because if the malloc site
422 // table overflows in another thread, it tries to change the code to summary.
423 MemTracker::transition_to(NMT_summary);
424 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
426 // Really can never go up to detail, verify that the code would never do this.
427 MemTracker::transition_to(NMT_detail);
428 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
429 return MemTracker::tracking_level() == NMT_minimal;
430 }
431 WB_END
433 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
434 int hash_size = MallocSiteTable::hash_buckets();
435 assert(hash_size > 0, "NMT hash_size should be > 0");
436 return (jint)hash_size;
437 WB_END
438 #endif // INCLUDE_NMT
440 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
441 assert(method != NULL, "method should not be null");
442 ThreadToNativeFromVM ttn(thread);
443 return env->FromReflectedMethod(method);
444 }
446 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
447 MutexLockerEx mu(Compile_lock);
448 CodeCache::mark_all_nmethods_for_deoptimization();
449 VM_Deoptimize op;
450 VMThread::execute(&op);
451 WB_END
453 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
454 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
455 int result = 0;
456 CHECK_JNI_EXCEPTION_(env, result);
457 MutexLockerEx mu(Compile_lock);
458 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
459 if (is_osr) {
460 result += mh->mark_osr_nmethods();
461 } else if (mh->code() != NULL) {
462 mh->code()->mark_for_deoptimization();
463 ++result;
464 }
465 result += CodeCache::mark_for_deoptimization(mh());
466 if (result > 0) {
467 VM_Deoptimize op;
468 VMThread::execute(&op);
469 }
470 return result;
471 WB_END
473 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
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 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
479 if (code == NULL) {
480 return JNI_FALSE;
481 }
482 return (code->is_alive() && !code->is_marked_for_deoptimization());
483 WB_END
485 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
486 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
487 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
488 MutexLockerEx mu(Compile_lock);
489 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
490 if (is_osr) {
491 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
492 } else {
493 return CompilationPolicy::can_be_compiled(mh, comp_level);
494 }
495 WB_END
497 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
498 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
499 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
500 MutexLockerEx mu(Compile_lock);
501 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
502 return mh->queued_for_compilation();
503 WB_END
505 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
506 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
507 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
508 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
509 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
510 return (code != NULL ? code->comp_level() : CompLevel_none);
511 WB_END
513 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
514 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
515 CHECK_JNI_EXCEPTION(env);
516 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
517 if (is_osr) {
518 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
519 } else {
520 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
521 }
522 WB_END
524 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
525 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
526 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
527 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
528 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
529 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
530 WB_END
532 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
533 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
534 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
535 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
536 bool result = mh->dont_inline();
537 mh->set_dont_inline(value == JNI_TRUE);
538 return result;
539 WB_END
541 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
542 if (comp_level == CompLevel_any) {
543 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
544 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
545 } else {
546 return CompileBroker::queue_size(comp_level);
547 }
548 WB_END
550 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
551 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
552 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
553 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
554 bool result = mh->force_inline();
555 mh->set_force_inline(value == JNI_TRUE);
556 return result;
557 WB_END
559 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
560 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
561 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
562 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
563 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
564 MutexLockerEx mu(Compile_lock);
565 return (mh->queued_for_compilation() || nm != NULL);
566 WB_END
568 class VM_WhiteBoxOperation : public VM_Operation {
569 public:
570 VM_WhiteBoxOperation() { }
571 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
572 bool allow_nested_vm_operations() const { return true; }
573 };
575 class AlwaysFalseClosure : public BoolObjectClosure {
576 public:
577 bool do_object_b(oop p) { return false; }
578 };
580 static AlwaysFalseClosure always_false;
582 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
583 public:
584 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
585 void doit() {
586 _mdo->clean_method_data(&always_false);
587 }
588 private:
589 MethodData* _mdo;
590 };
592 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
593 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
594 CHECK_JNI_EXCEPTION(env);
595 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
596 MutexLockerEx mu(Compile_lock);
597 MethodData* mdo = mh->method_data();
598 MethodCounters* mcs = mh->method_counters();
600 if (mdo != NULL) {
601 mdo->init();
602 ResourceMark rm;
603 int arg_count = mdo->method()->size_of_parameters();
604 for (int i = 0; i < arg_count; i++) {
605 mdo->set_arg_modified(i, 0);
606 }
607 VM_WhiteBoxCleanMethodData op(mdo);
608 VMThread::execute(&op);
609 }
611 mh->clear_not_c1_compilable();
612 mh->clear_not_c2_compilable();
613 mh->clear_not_c2_osr_compilable();
614 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
615 if (mcs != NULL) {
616 mcs->backedge_counter()->init();
617 mcs->invocation_counter()->init();
618 mcs->set_interpreter_invocation_count(0);
619 mcs->set_interpreter_throwout_count(0);
621 #ifdef TIERED
622 mcs->set_rate(0.0F);
623 mh->set_prev_event_count(0);
624 mh->set_prev_time(0);
625 #endif
626 }
627 WB_END
629 template <typename T>
630 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
631 if (name == NULL) {
632 return false;
633 }
634 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
635 const char* flag_name = env->GetStringUTFChars(name, NULL);
636 bool result = (*TAt)(flag_name, value);
637 env->ReleaseStringUTFChars(name, flag_name);
638 return result;
639 }
641 template <typename T>
642 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
643 if (name == NULL) {
644 return false;
645 }
646 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
647 const char* flag_name = env->GetStringUTFChars(name, NULL);
648 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
649 env->ReleaseStringUTFChars(name, flag_name);
650 return result;
651 }
653 template <typename T>
654 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
655 ResourceMark rm(thread);
656 jclass clazz = env->FindClass(name->as_C_string());
657 CHECK_JNI_EXCEPTION_(env, NULL);
658 jmethodID methodID = env->GetStaticMethodID(clazz,
659 vmSymbols::valueOf_name()->as_C_string(),
660 sig->as_C_string());
661 CHECK_JNI_EXCEPTION_(env, NULL);
662 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
663 CHECK_JNI_EXCEPTION_(env, NULL);
664 return result;
665 }
667 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
668 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
669 }
670 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
671 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
672 }
673 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
674 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
675 }
676 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
677 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
678 }*/
679 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
680 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
681 }
683 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
684 bool result;
685 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
686 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
687 return booleanBox(thread, env, result);
688 }
689 return NULL;
690 WB_END
692 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
693 intx result;
694 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
695 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
696 return longBox(thread, env, result);
697 }
698 return NULL;
699 WB_END
701 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
702 uintx result;
703 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
704 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
705 return longBox(thread, env, result);
706 }
707 return NULL;
708 WB_END
710 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
711 uint64_t result;
712 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
713 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
714 return longBox(thread, env, result);
715 }
716 return NULL;
717 WB_END
719 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
720 double result;
721 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
722 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
723 return doubleBox(thread, env, result);
724 }
725 return NULL;
726 WB_END
728 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
729 ccstr ccstrResult;
730 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
731 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
732 jstring result = env->NewStringUTF(ccstrResult);
733 CHECK_JNI_EXCEPTION_(env, NULL);
734 return result;
735 }
736 return NULL;
737 WB_END
739 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
740 bool result = value == JNI_TRUE ? true : false;
741 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
742 WB_END
744 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
745 intx result = value;
746 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
747 WB_END
749 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
750 uintx result = value;
751 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
752 WB_END
754 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
755 uint64_t result = value;
756 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
757 WB_END
759 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
760 double result = value;
761 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
762 WB_END
764 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
765 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
766 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
767 ccstr ccstrResult = ccstrValue;
768 bool needFree;
769 {
770 ThreadInVMfromNative ttvfn(thread); // back to VM
771 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
772 }
773 if (value != NULL) {
774 env->ReleaseStringUTFChars(value, ccstrValue);
775 }
776 if (needFree) {
777 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
778 }
779 WB_END
782 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
783 ResourceMark rm(THREAD);
784 int len;
785 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
786 return (StringTable::lookup(name, len) != NULL);
787 WB_END
789 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
790 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
791 Universe::heap()->collect(GCCause::_last_ditch_collection);
792 #if INCLUDE_ALL_GCS
793 if (UseG1GC) {
794 // Needs to be cleared explicitly for G1
795 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
796 }
797 #endif // INCLUDE_ALL_GCS
798 WB_END
800 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
801 Universe::heap()->collect(GCCause::_wb_young_gc);
802 WB_END
804 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
805 // static+volatile in order to force the read to happen
806 // (not be eliminated by the compiler)
807 static char c;
808 static volatile char* p;
810 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
811 if (p == NULL) {
812 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
813 }
815 c = *p;
816 WB_END
818 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
819 const char* cpu_features = VM_Version::cpu_features();
820 ThreadToNativeFromVM ttn(thread);
821 jstring features_string = env->NewStringUTF(cpu_features);
823 CHECK_JNI_EXCEPTION_(env, NULL);
825 return features_string;
826 WB_END
829 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
830 ResourceMark rm(THREAD);
831 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
832 CHECK_JNI_EXCEPTION_(env, NULL);
833 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
834 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
835 jobjectArray result = NULL;
836 if (code == NULL) {
837 return result;
838 }
839 int insts_size = code->insts_size();
841 ThreadToNativeFromVM ttn(thread);
842 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
843 CHECK_JNI_EXCEPTION_(env, NULL);
844 result = env->NewObjectArray(2, clazz, NULL);
845 if (result == NULL) {
846 return result;
847 }
849 jobject obj = integerBox(thread, env, code->comp_level());
850 CHECK_JNI_EXCEPTION_(env, NULL);
851 env->SetObjectArrayElement(result, 0, obj);
853 jbyteArray insts = env->NewByteArray(insts_size);
854 CHECK_JNI_EXCEPTION_(env, NULL);
855 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
856 env->SetObjectArrayElement(result, 1, insts);
858 return result;
859 WB_END
862 int WhiteBox::array_bytes_to_length(size_t bytes) {
863 return Array<u1>::bytes_to_length(bytes);
864 }
866 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
867 if (size < 0) {
868 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
869 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
870 }
872 oop class_loader_oop = JNIHandles::resolve(class_loader);
873 ClassLoaderData* cld = class_loader_oop != NULL
874 ? java_lang_ClassLoader::loader_data(class_loader_oop)
875 : ClassLoaderData::the_null_class_loader_data();
877 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
879 return (jlong)(uintptr_t)metadata;
880 WB_END
882 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
883 oop class_loader_oop = JNIHandles::resolve(class_loader);
884 ClassLoaderData* cld = class_loader_oop != NULL
885 ? java_lang_ClassLoader::loader_data(class_loader_oop)
886 : ClassLoaderData::the_null_class_loader_data();
888 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
889 WB_END
891 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
892 if (inc < 0) {
893 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
894 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
895 }
897 jlong max_size_t = (jlong) ((size_t) -1);
898 if (inc > max_size_t) {
899 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
900 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
901 }
903 size_t new_cap_until_GC = 0;
904 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
905 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
906 if (!success) {
907 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
908 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
909 "due to contention with another thread");
910 }
911 return (jlong) new_cap_until_GC;
912 WB_END
914 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
915 return (jlong) MetaspaceGC::capacity_until_GC();
916 WB_END
918 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
919 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
920 WB_END
922 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
923 oop obj_oop = JNIHandles::resolve(obj);
924 return (jboolean) obj_oop->mark()->has_monitor();
925 WB_END
927 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
928 VM_ForceSafepoint force_safepoint_op;
929 VMThread::execute(&force_safepoint_op);
930 WB_END
932 //Some convenience methods to deal with objects from java
933 int WhiteBox::offset_for_field(const char* field_name, oop object,
934 Symbol* signature_symbol) {
935 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
936 Thread* THREAD = Thread::current();
938 //Get the class of our object
939 Klass* arg_klass = object->klass();
940 //Turn it into an instance-klass
941 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
943 //Create symbols to look for in the class
944 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
945 THREAD);
947 //To be filled in with an offset of the field we're looking for
948 fieldDescriptor fd;
950 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
951 if (res == NULL) {
952 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
953 name_symbol->as_C_string());
954 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
955 }
957 //fetch the field at the offset we've found
958 int dest_offset = fd.offset();
960 return dest_offset;
961 }
964 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
965 int offset = offset_for_field(field_name, object,
966 vmSymbols::string_signature());
967 oop string = object->obj_field(offset);
968 if (string == NULL) {
969 return NULL;
970 }
971 const char* ret = java_lang_String::as_utf8_string(string);
972 return ret;
973 }
975 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
976 int offset =
977 offset_for_field(field_name, object, vmSymbols::bool_signature());
978 bool ret = (object->bool_field(offset) == JNI_TRUE);
979 return ret;
980 }
982 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
983 ResourceMark rm;
984 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
986 // one by one registration natives for exception catching
987 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
988 CHECK_JNI_EXCEPTION(env);
989 for (int i = 0, n = method_count; i < n; ++i) {
990 // Skip dummy entries
991 if (method_array[i].fnPtr == NULL) continue;
992 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
993 jthrowable throwable_obj = env->ExceptionOccurred();
994 if (throwable_obj != NULL) {
995 env->ExceptionClear();
996 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
997 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
998 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
999 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1000 method_array[i].name, method_array[i].signature);
1001 }
1002 } else {
1003 // Registration failed unexpectedly.
1004 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1005 method_array[i].name, method_array[i].signature);
1006 env->UnregisterNatives(wbclass);
1007 break;
1008 }
1009 }
1010 }
1011 }
1013 #define CC (char*)
1015 static JNINativeMethod methods[] = {
1016 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1017 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1018 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1019 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1020 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1021 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1022 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1023 {CC"classKnownToNotExist",
1024 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
1025 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs},
1026 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
1027 (void*)&WB_GetLookupCacheMatches},
1028 {CC"parseCommandLine",
1029 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1030 (void*) &WB_ParseCommandLine
1031 },
1032 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
1033 (void*)&WB_AddToBootstrapClassLoaderSearch},
1034 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
1035 (void*)&WB_AddToSystemClassLoaderSearch},
1036 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1037 (void*)&WB_GetCompressedOopsMaxHeapSize},
1038 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1039 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1040 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1041 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1042 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1043 #if INCLUDE_ALL_GCS
1044 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1045 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1046 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1047 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1048 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1049 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1050 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1051 (void*)&WB_G1AuxiliaryMemoryUsage },
1052 #endif // INCLUDE_ALL_GCS
1053 #if INCLUDE_NMT
1054 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1055 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1056 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1057 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1058 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1059 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1060 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1061 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported},
1062 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1063 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1064 #endif // INCLUDE_NMT
1065 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1066 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
1067 (void*)&WB_DeoptimizeMethod },
1068 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z",
1069 (void*)&WB_IsMethodCompiled },
1070 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1071 (void*)&WB_IsMethodCompilable},
1072 {CC"isMethodQueuedForCompilation",
1073 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1074 {CC"makeMethodNotCompilable",
1075 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1076 {CC"testSetDontInlineMethod",
1077 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1078 {CC"getMethodCompilationLevel",
1079 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1080 {CC"getMethodEntryBci",
1081 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1082 {CC"getCompileQueueSize",
1083 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1084 {CC"testSetForceInlineMethod",
1085 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1086 {CC"enqueueMethodForCompilation",
1087 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1088 {CC"clearMethodState",
1089 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1090 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1091 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1092 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1093 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1094 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1095 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1096 (void*)&WB_SetStringVMFlag},
1097 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1098 (void*)&WB_GetBooleanVMFlag},
1099 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1100 (void*)&WB_GetIntxVMFlag},
1101 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1102 (void*)&WB_GetUintxVMFlag},
1103 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1104 (void*)&WB_GetUint64VMFlag},
1105 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1106 (void*)&WB_GetDoubleVMFlag},
1107 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1108 (void*)&WB_GetStringVMFlag},
1109 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1110 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1111 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1112 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1113 {CC"allocateMetaspace",
1114 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1115 {CC"freeMetaspace",
1116 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1117 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1118 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1119 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1120 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1121 (void*)&WB_GetNMethod },
1122 {CC"isMonitorInflated", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1123 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1124 };
1126 #undef CC
1128 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1129 {
1130 if (WhiteBoxAPI) {
1131 // Make sure that wbclass is loaded by the null classloader
1132 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1133 Handle loader(ikh->class_loader());
1134 if (loader.is_null()) {
1135 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1136 WhiteBox::register_extended(env, wbclass, thread);
1137 WhiteBox::set_used();
1138 }
1139 }
1140 }
1141 JVM_END
