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 */ 24 25 #include "precompiled.hpp" 26 27 #include "memory/metadataFactory.hpp" 28 #include "memory/universe.hpp" 29 #include "oops/oop.inline.hpp" 30 31 #include "classfile/symbolTable.hpp" 32 #include "classfile/classLoaderData.hpp" 33 34 #include "prims/whitebox.hpp" 35 #include "prims/wbtestmethods/parserTests.hpp" 36 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" 44 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 51 52 #if INCLUDE_NMT 53 #include "services/mallocSiteTable.hpp" 54 #include "services/memTracker.hpp" 55 #include "utilities/nativeCallStack.hpp" 56 #endif // INCLUDE_NMT 57 58 #include "compiler/compileBroker.hpp" 59 #include "jvmtifiles/jvmtiEnv.hpp" 60 #include "runtime/compilationPolicy.hpp" 61 62 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 63 64 #define SIZE_T_MAX_VALUE ((size_t) -1) 65 66 bool WhiteBox::_used = false; 67 68 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 69 return (jlong)(void*)JNIHandles::resolve(obj); 70 WB_END 71 72 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 73 return heapOopSize; 74 WB_END 75 76 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 77 return os::vm_page_size(); 78 WB_END 79 80 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o)) 81 return os::large_page_size(); 82 WB_END 83 84 class WBIsKlassAliveClosure : public KlassClosure { 85 Symbol* _name; 86 bool _found; 87 public: 88 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 89 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 } 97 98 bool found() const { 99 return _found; 100 } 101 }; 102 103 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 108 109 WBIsKlassAliveClosure closure(sym); 110 ClassLoaderDataGraph::classes_do(&closure); 111 112 return closure.found(); 113 WB_END 114 115 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 122 123 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 127 128 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); 132 133 env->ReleaseStringUTFChars(name, resource_name); 134 return result; 135 WB_END 136 137 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 147 148 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 158 159 160 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 161 return (jlong)Arguments::max_heap_for_compressed_oops(); 162 } 163 WB_END 164 165 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 173 174 #ifndef PRODUCT 175 // Forward declaration 176 void TestReservedSpace_test(); 177 void TestReserveMemorySpecial_test(); 178 void TestVirtualSpace_test(); 179 void TestMetaspaceAux_test(); 180 #endif 181 182 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 190 191 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); 196 197 //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 216 217 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 } 226 227 long seed = os::random(); 228 tty->print_cr("Random seed is %ld", seed); 229 os::init_random(seed); 230 231 for (size_t i = 0; i < iterations; i++) { 232 233 // Whether we will shrink or grow 234 bool shrink = os::random() % 2L == 0; 235 236 // Get random delta to resize virtual space 237 size_t delta = (size_t)os::random() % magnitude; 238 239 // If we are about to shrink virtual space below zero, then expand instead 240 if (shrink && vs.committed_size() < delta) { 241 shrink = false; 242 } 243 244 // 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 } 254 255 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 } 264 265 // 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 } 275 276 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 277 (size_t) magnitude, (size_t) iterations); 278 WB_END 279 280 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 298 299 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 303 304 #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 311 312 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 317 318 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 323 324 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 325 return (jint)HeapRegion::GrainBytes; 326 WB_END 327 #endif // INCLUDE_ALL_GCS 328 329 #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 337 338 // 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 345 346 // 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 350 351 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 352 jlong addr = 0; 353 354 addr = (jlong)(uintptr_t)os::reserve_memory(size); 355 MemTracker::record_virtual_memory_type((address)addr, mtTest); 356 357 return addr; 358 WB_END 359 360 361 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 365 366 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 369 370 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 373 374 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env)) 375 return MemTracker::tracking_level() == NMT_detail; 376 WB_END 377 378 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"); 387 388 // 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"); 391 392 // Shutdown sets tracking level to minimal. 393 MemTracker::shutdown(); 394 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 395 396 // 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"); 401 402 // 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 408 409 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 415 416 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 } 421 422 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 428 429 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 448 449 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 460 461 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 472 473 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 480 481 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 488 489 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 499 500 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 507 508 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 516 517 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 525 526 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 534 535 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 543 544 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 }; 550 551 class AlwaysFalseClosure : public BoolObjectClosure { 552 public: 553 bool do_object_b(oop p) { return false; } 554 }; 555 556 static AlwaysFalseClosure always_false; 557 558 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 }; 567 568 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(); 575 576 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 } 586 587 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); 596 597 #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 604 605 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 } 616 617 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 } 628 629 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 } 642 643 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 } 658 659 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 667 668 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 676 677 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 685 686 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 694 695 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 703 704 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 714 715 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 719 720 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 724 725 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 729 730 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 734 735 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 739 740 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 756 757 758 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 764 765 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 775 776 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 777 Universe::heap()->collect(GCCause::_wb_young_gc); 778 WB_END 779 780 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; 785 786 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 } 790 791 c = *p; 792 WB_END 793 794 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); 798 799 CHECK_JNI_EXCEPTION_(env, NULL); 800 801 return features_string; 802 WB_END 803 804 805 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(); 816 817 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 } 824 825 jobject obj = integerBox(thread, env, code->comp_level()); 826 CHECK_JNI_EXCEPTION_(env, NULL); 827 env->SetObjectArrayElement(result, 0, obj); 828 829 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); 833 834 return result; 835 WB_END 836 837 838 int WhiteBox::array_bytes_to_length(size_t bytes) { 839 return Array<u1>::bytes_to_length(bytes); 840 } 841 842 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 } 847 848 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(); 852 853 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 854 855 return (jlong)(uintptr_t)metadata; 856 WB_END 857 858 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(); 863 864 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 865 WB_END 866 867 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 } 872 873 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 } 878 879 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 889 890 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 891 return (jlong) MetaspaceGC::capacity_until_GC(); 892 WB_END 893 894 //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(); 899 900 //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); 904 905 //Create symbols to look for in the class 906 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 907 THREAD); 908 909 //To be filled in with an offset of the field we're looking for 910 fieldDescriptor fd; 911 912 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 } 918 919 //fetch the field at the offset we've found 920 int dest_offset = fd.offset(); 921 922 return dest_offset; 923 } 924 925 926 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 } 936 937 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 } 943 944 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 947 948 // 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 } 974 975 #define CC (char*) 976 977 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 }; 1080 1081 #undef CC 1082 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