1 /* 2 * Copyright (c) 2003, 2015, 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 #include "classfile/systemDictionary.hpp" 27 #include "compiler/compileBroker.hpp" 28 #include "memory/iterator.hpp" 29 #include "memory/oopFactory.hpp" 30 #include "memory/resourceArea.hpp" 31 #include "oops/klass.hpp" 32 #include "oops/objArrayKlass.hpp" 33 #include "oops/objArrayOop.inline.hpp" 34 #include "oops/oop.inline.hpp" 35 #include "runtime/arguments.hpp" 36 #include "runtime/globals.hpp" 37 #include "runtime/handles.inline.hpp" 38 #include "runtime/interfaceSupport.hpp" 39 #include "runtime/javaCalls.hpp" 40 #include "runtime/jniHandles.hpp" 41 #include "runtime/os.hpp" 42 #include "runtime/serviceThread.hpp" 43 #include "runtime/thread.inline.hpp" 44 #include "services/classLoadingService.hpp" 45 #include "services/diagnosticCommand.hpp" 46 #include "services/diagnosticFramework.hpp" 47 #include "services/writeableFlags.hpp" 48 #include "services/heapDumper.hpp" 49 #include "services/jmm.h" 50 #include "services/lowMemoryDetector.hpp" 51 #include "services/gcNotifier.hpp" 52 #include "services/nmtDCmd.hpp" 53 #include "services/management.hpp" 54 #include "services/memoryManager.hpp" 55 #include "services/memoryPool.hpp" 56 #include "services/memoryService.hpp" 57 #include "services/runtimeService.hpp" 58 #include "services/threadService.hpp" 59 #include "utilities/macros.hpp" 60 61 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 62 63 PerfVariable* Management::_begin_vm_creation_time = NULL; 64 PerfVariable* Management::_end_vm_creation_time = NULL; 65 PerfVariable* Management::_vm_init_done_time = NULL; 66 67 Klass* Management::_diagnosticCommandImpl_klass = NULL; 68 Klass* Management::_garbageCollectorExtImpl_klass = NULL; 69 Klass* Management::_garbageCollectorMXBean_klass = NULL; 70 Klass* Management::_gcInfo_klass = NULL; 71 Klass* Management::_managementFactoryHelper_klass = NULL; 72 Klass* Management::_memoryManagerMXBean_klass = NULL; 73 Klass* Management::_memoryPoolMXBean_klass = NULL; 74 Klass* Management::_memoryUsage_klass = NULL; 75 Klass* Management::_sensor_klass = NULL; 76 Klass* Management::_threadInfo_klass = NULL; 77 78 jmmOptionalSupport Management::_optional_support = {0}; 79 TimeStamp Management::_stamp; 80 81 void management_init() { 82 #if INCLUDE_MANAGEMENT 83 Management::init(); 84 ThreadService::init(); 85 RuntimeService::init(); 86 ClassLoadingService::init(); 87 #else 88 ThreadService::init(); 89 // Make sure the VM version is initialized 90 // This is normally called by RuntimeService::init(). 91 // Since that is conditionalized out, we need to call it here. 92 Abstract_VM_Version::initialize(); 93 #endif // INCLUDE_MANAGEMENT 94 } 95 96 #if INCLUDE_MANAGEMENT 97 98 void Management::init() { 99 EXCEPTION_MARK; 100 101 // These counters are for java.lang.management API support. 102 // They are created even if -XX:-UsePerfData is set and in 103 // that case, they will be allocated on C heap. 104 105 _begin_vm_creation_time = 106 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", 107 PerfData::U_None, CHECK); 108 109 _end_vm_creation_time = 110 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", 111 PerfData::U_None, CHECK); 112 113 _vm_init_done_time = 114 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", 115 PerfData::U_None, CHECK); 116 117 // Initialize optional support 118 _optional_support.isLowMemoryDetectionSupported = 1; 119 _optional_support.isCompilationTimeMonitoringSupported = 1; 120 _optional_support.isThreadContentionMonitoringSupported = 1; 121 122 if (os::is_thread_cpu_time_supported()) { 123 _optional_support.isCurrentThreadCpuTimeSupported = 1; 124 _optional_support.isOtherThreadCpuTimeSupported = 1; 125 } else { 126 _optional_support.isCurrentThreadCpuTimeSupported = 0; 127 _optional_support.isOtherThreadCpuTimeSupported = 0; 128 } 129 130 _optional_support.isBootClassPathSupported = 1; 131 _optional_support.isObjectMonitorUsageSupported = 1; 132 #if INCLUDE_SERVICES 133 // This depends on the heap inspector 134 _optional_support.isSynchronizerUsageSupported = 1; 135 #endif // INCLUDE_SERVICES 136 _optional_support.isThreadAllocatedMemorySupported = 1; 137 _optional_support.isRemoteDiagnosticCommandsSupported = 1; 138 139 // Registration of the diagnostic commands 140 DCmdRegistrant::register_dcmds(); 141 DCmdRegistrant::register_dcmds_ext(); 142 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI 143 | DCmd_Source_MBean; 144 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(full_export, true, false)); 145 } 146 147 void Management::initialize(TRAPS) { 148 // Start the service thread 149 ServiceThread::initialize(); 150 151 if (ManagementServer) { 152 ResourceMark rm(THREAD); 153 HandleMark hm(THREAD); 154 155 // Load and initialize the sun.management.Agent class 156 // invoke startAgent method to start the management server 157 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 158 Klass* k = SystemDictionary::resolve_or_null(vmSymbols::sun_management_Agent(), 159 loader, 160 Handle(), 161 THREAD); 162 if (k == NULL) { 163 vm_exit_during_initialization("Management agent initialization failure: " 164 "class sun.management.Agent not found."); 165 } 166 instanceKlassHandle ik (THREAD, k); 167 168 JavaValue result(T_VOID); 169 JavaCalls::call_static(&result, 170 ik, 171 vmSymbols::startAgent_name(), 172 vmSymbols::void_method_signature(), 173 CHECK); 174 } 175 } 176 177 void Management::get_optional_support(jmmOptionalSupport* support) { 178 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); 179 } 180 181 Klass* Management::load_and_initialize_klass(Symbol* sh, TRAPS) { 182 Klass* k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); 183 instanceKlassHandle ik (THREAD, k); 184 if (ik->should_be_initialized()) { 185 ik->initialize(CHECK_NULL); 186 } 187 // If these classes change to not be owned by the boot loader, they need 188 // to be walked to keep their class loader alive in oops_do. 189 assert(ik->class_loader() == NULL, "need to follow in oops_do"); 190 return ik(); 191 } 192 193 void Management::record_vm_startup_time(jlong begin, jlong duration) { 194 // if the performance counter is not initialized, 195 // then vm initialization failed; simply return. 196 if (_begin_vm_creation_time == NULL) return; 197 198 _begin_vm_creation_time->set_value(begin); 199 _end_vm_creation_time->set_value(begin + duration); 200 PerfMemory::set_accessible(true); 201 } 202 203 jlong Management::timestamp() { 204 TimeStamp t; 205 t.update(); 206 return t.ticks() - _stamp.ticks(); 207 } 208 209 void Management::oops_do(OopClosure* f) { 210 MemoryService::oops_do(f); 211 ThreadService::oops_do(f); 212 } 213 214 Klass* Management::java_lang_management_ThreadInfo_klass(TRAPS) { 215 if (_threadInfo_klass == NULL) { 216 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); 217 } 218 return _threadInfo_klass; 219 } 220 221 Klass* Management::java_lang_management_MemoryUsage_klass(TRAPS) { 222 if (_memoryUsage_klass == NULL) { 223 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); 224 } 225 return _memoryUsage_klass; 226 } 227 228 Klass* Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { 229 if (_memoryPoolMXBean_klass == NULL) { 230 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); 231 } 232 return _memoryPoolMXBean_klass; 233 } 234 235 Klass* Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { 236 if (_memoryManagerMXBean_klass == NULL) { 237 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); 238 } 239 return _memoryManagerMXBean_klass; 240 } 241 242 Klass* Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { 243 if (_garbageCollectorMXBean_klass == NULL) { 244 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); 245 } 246 return _garbageCollectorMXBean_klass; 247 } 248 249 Klass* Management::sun_management_Sensor_klass(TRAPS) { 250 if (_sensor_klass == NULL) { 251 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); 252 } 253 return _sensor_klass; 254 } 255 256 Klass* Management::sun_management_ManagementFactoryHelper_klass(TRAPS) { 257 if (_managementFactoryHelper_klass == NULL) { 258 _managementFactoryHelper_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactoryHelper(), CHECK_NULL); 259 } 260 return _managementFactoryHelper_klass; 261 } 262 263 Klass* Management::com_sun_management_internal_GarbageCollectorExtImpl_klass(TRAPS) { 264 if (_garbageCollectorExtImpl_klass == NULL) { 265 _garbageCollectorExtImpl_klass = load_and_initialize_klass(vmSymbols::com_sun_management_internal_GarbageCollectorExtImpl(), CHECK_NULL); 266 } 267 return _garbageCollectorExtImpl_klass; 268 } 269 270 Klass* Management::com_sun_management_GcInfo_klass(TRAPS) { 271 if (_gcInfo_klass == NULL) { 272 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); 273 } 274 return _gcInfo_klass; 275 } 276 277 Klass* Management::com_sun_management_internal_DiagnosticCommandImpl_klass(TRAPS) { 278 if (_diagnosticCommandImpl_klass == NULL) { 279 _diagnosticCommandImpl_klass = load_and_initialize_klass(vmSymbols::com_sun_management_internal_DiagnosticCommandImpl(), CHECK_NULL); 280 } 281 return _diagnosticCommandImpl_klass; 282 } 283 284 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { 285 Handle snapshot_thread(THREAD, snapshot->threadObj()); 286 287 jlong contended_time; 288 jlong waited_time; 289 if (ThreadService::is_thread_monitoring_contention()) { 290 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); 291 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); 292 } else { 293 // set them to -1 if thread contention monitoring is disabled. 294 contended_time = max_julong; 295 waited_time = max_julong; 296 } 297 298 int thread_status = snapshot->thread_status(); 299 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); 300 if (snapshot->is_ext_suspended()) { 301 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; 302 } 303 if (snapshot->is_in_native()) { 304 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; 305 } 306 307 ThreadStackTrace* st = snapshot->get_stack_trace(); 308 Handle stacktrace_h; 309 if (st != NULL) { 310 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); 311 } else { 312 stacktrace_h = Handle(); 313 } 314 315 args->push_oop(snapshot_thread); 316 args->push_int(thread_status); 317 args->push_oop(Handle(THREAD, snapshot->blocker_object())); 318 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); 319 args->push_long(snapshot->contended_enter_count()); 320 args->push_long(contended_time); 321 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); 322 args->push_long(waited_time); 323 args->push_oop(stacktrace_h); 324 } 325 326 // Helper function to construct a ThreadInfo object 327 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { 328 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); 329 instanceKlassHandle ik (THREAD, k); 330 331 JavaValue result(T_VOID); 332 JavaCallArguments args(14); 333 334 // First allocate a ThreadObj object and 335 // push the receiver as the first argument 336 Handle element = ik->allocate_instance_handle(CHECK_NULL); 337 args.push_oop(element); 338 339 // initialize the arguments for the ThreadInfo constructor 340 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); 341 342 // Call ThreadInfo constructor with no locked monitors and synchronizers 343 JavaCalls::call_special(&result, 344 ik, 345 vmSymbols::object_initializer_name(), 346 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), 347 &args, 348 CHECK_NULL); 349 350 return (instanceOop) element(); 351 } 352 353 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, 354 objArrayHandle monitors_array, 355 typeArrayHandle depths_array, 356 objArrayHandle synchronizers_array, 357 TRAPS) { 358 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); 359 instanceKlassHandle ik (THREAD, k); 360 361 JavaValue result(T_VOID); 362 JavaCallArguments args(17); 363 364 // First allocate a ThreadObj object and 365 // push the receiver as the first argument 366 Handle element = ik->allocate_instance_handle(CHECK_NULL); 367 args.push_oop(element); 368 369 // initialize the arguments for the ThreadInfo constructor 370 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); 371 372 // push the locked monitors and synchronizers in the arguments 373 args.push_oop(monitors_array); 374 args.push_oop(depths_array); 375 args.push_oop(synchronizers_array); 376 377 // Call ThreadInfo constructor with locked monitors and synchronizers 378 JavaCalls::call_special(&result, 379 ik, 380 vmSymbols::object_initializer_name(), 381 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), 382 &args, 383 CHECK_NULL); 384 385 return (instanceOop) element(); 386 } 387 388 389 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { 390 if (mgr == NULL) { 391 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); 392 } 393 oop mgr_obj = JNIHandles::resolve(mgr); 394 instanceHandle h(THREAD, (instanceOop) mgr_obj); 395 396 Klass* k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); 397 if (!h->is_a(k)) { 398 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 399 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", 400 NULL); 401 } 402 403 MemoryManager* gc = MemoryService::get_memory_manager(h); 404 if (gc == NULL || !gc->is_gc_memory_manager()) { 405 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 406 "Invalid GC memory manager", 407 NULL); 408 } 409 return (GCMemoryManager*) gc; 410 } 411 412 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { 413 if (obj == NULL) { 414 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); 415 } 416 417 oop pool_obj = JNIHandles::resolve(obj); 418 assert(pool_obj->is_instance(), "Should be an instanceOop"); 419 instanceHandle ph(THREAD, (instanceOop) pool_obj); 420 421 return MemoryService::get_memory_pool(ph); 422 } 423 424 #endif // INCLUDE_MANAGEMENT 425 426 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { 427 int num_threads = ids_ah->length(); 428 429 // Validate input thread IDs 430 int i = 0; 431 for (i = 0; i < num_threads; i++) { 432 jlong tid = ids_ah->long_at(i); 433 if (tid <= 0) { 434 // throw exception if invalid thread id. 435 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 436 "Invalid thread ID entry"); 437 } 438 } 439 } 440 441 #if INCLUDE_MANAGEMENT 442 443 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { 444 // check if the element of infoArray is of type ThreadInfo class 445 Klass* threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); 446 Klass* element_klass = ObjArrayKlass::cast(infoArray_h->klass())->element_klass(); 447 if (element_klass != threadinfo_klass) { 448 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 449 "infoArray element type is not ThreadInfo class"); 450 } 451 } 452 453 454 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { 455 if (obj == NULL) { 456 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); 457 } 458 459 oop mgr_obj = JNIHandles::resolve(obj); 460 assert(mgr_obj->is_instance(), "Should be an instanceOop"); 461 instanceHandle mh(THREAD, (instanceOop) mgr_obj); 462 463 return MemoryService::get_memory_manager(mh); 464 } 465 466 // Returns a version string and sets major and minor version if 467 // the input parameters are non-null. 468 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) 469 return JMM_VERSION; 470 JVM_END 471 472 // Gets the list of VM monitoring and management optional supports 473 // Returns 0 if succeeded; otherwise returns non-zero. 474 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) 475 if (support == NULL) { 476 return -1; 477 } 478 Management::get_optional_support(support); 479 return 0; 480 JVM_END 481 482 // Returns a java.lang.String object containing the input arguments to the VM. 483 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) 484 ResourceMark rm(THREAD); 485 486 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { 487 return NULL; 488 } 489 490 char** vm_flags = Arguments::jvm_flags_array(); 491 char** vm_args = Arguments::jvm_args_array(); 492 int num_flags = Arguments::num_jvm_flags(); 493 int num_args = Arguments::num_jvm_args(); 494 495 size_t length = 1; // null terminator 496 int i; 497 for (i = 0; i < num_flags; i++) { 498 length += strlen(vm_flags[i]); 499 } 500 for (i = 0; i < num_args; i++) { 501 length += strlen(vm_args[i]); 502 } 503 // add a space between each argument 504 length += num_flags + num_args - 1; 505 506 // Return the list of input arguments passed to the VM 507 // and preserve the order that the VM processes. 508 char* args = NEW_RESOURCE_ARRAY(char, length); 509 args[0] = '\0'; 510 // concatenate all jvm_flags 511 if (num_flags > 0) { 512 strcat(args, vm_flags[0]); 513 for (i = 1; i < num_flags; i++) { 514 strcat(args, " "); 515 strcat(args, vm_flags[i]); 516 } 517 } 518 519 if (num_args > 0 && num_flags > 0) { 520 // append a space if args already contains one or more jvm_flags 521 strcat(args, " "); 522 } 523 524 // concatenate all jvm_args 525 if (num_args > 0) { 526 strcat(args, vm_args[0]); 527 for (i = 1; i < num_args; i++) { 528 strcat(args, " "); 529 strcat(args, vm_args[i]); 530 } 531 } 532 533 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); 534 return JNIHandles::make_local(env, hargs()); 535 JVM_END 536 537 // Returns an array of java.lang.String object containing the input arguments to the VM. 538 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) 539 ResourceMark rm(THREAD); 540 541 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { 542 return NULL; 543 } 544 545 char** vm_flags = Arguments::jvm_flags_array(); 546 char** vm_args = Arguments::jvm_args_array(); 547 int num_flags = Arguments::num_jvm_flags(); 548 int num_args = Arguments::num_jvm_args(); 549 550 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); 551 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); 552 objArrayHandle result_h(THREAD, r); 553 554 int index = 0; 555 for (int j = 0; j < num_flags; j++, index++) { 556 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); 557 result_h->obj_at_put(index, h()); 558 } 559 for (int i = 0; i < num_args; i++, index++) { 560 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); 561 result_h->obj_at_put(index, h()); 562 } 563 return (jobjectArray) JNIHandles::make_local(env, result_h()); 564 JVM_END 565 566 // Returns an array of java/lang/management/MemoryPoolMXBean object 567 // one for each memory pool if obj == null; otherwise returns 568 // an array of memory pools for a given memory manager if 569 // it is a valid memory manager. 570 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) 571 ResourceMark rm(THREAD); 572 573 int num_memory_pools; 574 MemoryManager* mgr = NULL; 575 if (obj == NULL) { 576 num_memory_pools = MemoryService::num_memory_pools(); 577 } else { 578 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); 579 if (mgr == NULL) { 580 return NULL; 581 } 582 num_memory_pools = mgr->num_memory_pools(); 583 } 584 585 // Allocate the resulting MemoryPoolMXBean[] object 586 Klass* k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); 587 instanceKlassHandle ik (THREAD, k); 588 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); 589 objArrayHandle poolArray(THREAD, r); 590 591 if (mgr == NULL) { 592 // Get all memory pools 593 for (int i = 0; i < num_memory_pools; i++) { 594 MemoryPool* pool = MemoryService::get_memory_pool(i); 595 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); 596 instanceHandle ph(THREAD, p); 597 poolArray->obj_at_put(i, ph()); 598 } 599 } else { 600 // Get memory pools managed by a given memory manager 601 for (int i = 0; i < num_memory_pools; i++) { 602 MemoryPool* pool = mgr->get_memory_pool(i); 603 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); 604 instanceHandle ph(THREAD, p); 605 poolArray->obj_at_put(i, ph()); 606 } 607 } 608 return (jobjectArray) JNIHandles::make_local(env, poolArray()); 609 JVM_END 610 611 // Returns an array of java/lang/management/MemoryManagerMXBean object 612 // one for each memory manager if obj == null; otherwise returns 613 // an array of memory managers for a given memory pool if 614 // it is a valid memory pool. 615 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) 616 ResourceMark rm(THREAD); 617 618 int num_mgrs; 619 MemoryPool* pool = NULL; 620 if (obj == NULL) { 621 num_mgrs = MemoryService::num_memory_managers(); 622 } else { 623 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); 624 if (pool == NULL) { 625 return NULL; 626 } 627 num_mgrs = pool->num_memory_managers(); 628 } 629 630 // Allocate the resulting MemoryManagerMXBean[] object 631 Klass* k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); 632 instanceKlassHandle ik (THREAD, k); 633 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); 634 objArrayHandle mgrArray(THREAD, r); 635 636 if (pool == NULL) { 637 // Get all memory managers 638 for (int i = 0; i < num_mgrs; i++) { 639 MemoryManager* mgr = MemoryService::get_memory_manager(i); 640 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); 641 instanceHandle ph(THREAD, p); 642 mgrArray->obj_at_put(i, ph()); 643 } 644 } else { 645 // Get memory managers for a given memory pool 646 for (int i = 0; i < num_mgrs; i++) { 647 MemoryManager* mgr = pool->get_memory_manager(i); 648 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); 649 instanceHandle ph(THREAD, p); 650 mgrArray->obj_at_put(i, ph()); 651 } 652 } 653 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); 654 JVM_END 655 656 657 // Returns a java/lang/management/MemoryUsage object containing the memory usage 658 // of a given memory pool. 659 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) 660 ResourceMark rm(THREAD); 661 662 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); 663 if (pool != NULL) { 664 MemoryUsage usage = pool->get_memory_usage(); 665 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 666 return JNIHandles::make_local(env, h()); 667 } else { 668 return NULL; 669 } 670 JVM_END 671 672 // Returns a java/lang/management/MemoryUsage object containing the memory usage 673 // of a given memory pool. 674 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) 675 ResourceMark rm(THREAD); 676 677 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); 678 if (pool != NULL) { 679 MemoryUsage usage = pool->get_peak_memory_usage(); 680 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 681 return JNIHandles::make_local(env, h()); 682 } else { 683 return NULL; 684 } 685 JVM_END 686 687 // Returns a java/lang/management/MemoryUsage object containing the memory usage 688 // of a given memory pool after most recent GC. 689 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) 690 ResourceMark rm(THREAD); 691 692 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); 693 if (pool != NULL && pool->is_collected_pool()) { 694 MemoryUsage usage = pool->get_last_collection_usage(); 695 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 696 return JNIHandles::make_local(env, h()); 697 } else { 698 return NULL; 699 } 700 JVM_END 701 702 // Sets the memory pool sensor for a threshold type 703 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) 704 if (obj == NULL || sensorObj == NULL) { 705 THROW(vmSymbols::java_lang_NullPointerException()); 706 } 707 708 Klass* sensor_klass = Management::sun_management_Sensor_klass(CHECK); 709 oop s = JNIHandles::resolve(sensorObj); 710 assert(s->is_instance(), "Sensor should be an instanceOop"); 711 instanceHandle sensor_h(THREAD, (instanceOop) s); 712 if (!sensor_h->is_a(sensor_klass)) { 713 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 714 "Sensor is not an instance of sun.management.Sensor class"); 715 } 716 717 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); 718 assert(mpool != NULL, "MemoryPool should exist"); 719 720 switch (type) { 721 case JMM_USAGE_THRESHOLD_HIGH: 722 case JMM_USAGE_THRESHOLD_LOW: 723 // have only one sensor for threshold high and low 724 mpool->set_usage_sensor_obj(sensor_h); 725 break; 726 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: 727 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: 728 // have only one sensor for threshold high and low 729 mpool->set_gc_usage_sensor_obj(sensor_h); 730 break; 731 default: 732 assert(false, "Unrecognized type"); 733 } 734 735 JVM_END 736 737 738 // Sets the threshold of a given memory pool. 739 // Returns the previous threshold. 740 // 741 // Input parameters: 742 // pool - the MemoryPoolMXBean object 743 // type - threshold type 744 // threshold - the new threshold (must not be negative) 745 // 746 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) 747 if (threshold < 0) { 748 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 749 "Invalid threshold value", 750 -1); 751 } 752 753 if ((size_t)threshold > max_uintx) { 754 stringStream st; 755 st.print("Invalid valid threshold value. Threshold value (" UINT64_FORMAT ") > max value of size_t (" SIZE_FORMAT ")", (size_t)threshold, max_uintx); 756 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); 757 } 758 759 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); 760 assert(pool != NULL, "MemoryPool should exist"); 761 762 jlong prev = 0; 763 switch (type) { 764 case JMM_USAGE_THRESHOLD_HIGH: 765 if (!pool->usage_threshold()->is_high_threshold_supported()) { 766 return -1; 767 } 768 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); 769 break; 770 771 case JMM_USAGE_THRESHOLD_LOW: 772 if (!pool->usage_threshold()->is_low_threshold_supported()) { 773 return -1; 774 } 775 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); 776 break; 777 778 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: 779 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { 780 return -1; 781 } 782 // return and the new threshold is effective for the next GC 783 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); 784 785 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: 786 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { 787 return -1; 788 } 789 // return and the new threshold is effective for the next GC 790 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); 791 792 default: 793 assert(false, "Unrecognized type"); 794 return -1; 795 } 796 797 // When the threshold is changed, reevaluate if the low memory 798 // detection is enabled. 799 if (prev != threshold) { 800 LowMemoryDetector::recompute_enabled_for_collected_pools(); 801 LowMemoryDetector::detect_low_memory(pool); 802 } 803 return prev; 804 JVM_END 805 806 // Returns a java/lang/management/MemoryUsage object representing 807 // the memory usage for the heap or non-heap memory. 808 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) 809 ResourceMark rm(THREAD); 810 811 // Calculate the memory usage 812 size_t total_init = 0; 813 size_t total_used = 0; 814 size_t total_committed = 0; 815 size_t total_max = 0; 816 bool has_undefined_init_size = false; 817 bool has_undefined_max_size = false; 818 819 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { 820 MemoryPool* pool = MemoryService::get_memory_pool(i); 821 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { 822 MemoryUsage u = pool->get_memory_usage(); 823 total_used += u.used(); 824 total_committed += u.committed(); 825 826 if (u.init_size() == (size_t)-1) { 827 has_undefined_init_size = true; 828 } 829 if (!has_undefined_init_size) { 830 total_init += u.init_size(); 831 } 832 833 if (u.max_size() == (size_t)-1) { 834 has_undefined_max_size = true; 835 } 836 if (!has_undefined_max_size) { 837 total_max += u.max_size(); 838 } 839 } 840 } 841 842 // if any one of the memory pool has undefined init_size or max_size, 843 // set it to -1 844 if (has_undefined_init_size) { 845 total_init = (size_t)-1; 846 } 847 if (has_undefined_max_size) { 848 total_max = (size_t)-1; 849 } 850 851 MemoryUsage usage((heap ? InitialHeapSize : total_init), 852 total_used, 853 total_committed, 854 (heap ? Universe::heap()->max_capacity() : total_max)); 855 856 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); 857 return JNIHandles::make_local(env, obj()); 858 JVM_END 859 860 // Returns the boolean value of a given attribute. 861 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) 862 switch (att) { 863 case JMM_VERBOSE_GC: 864 return MemoryService::get_verbose(); 865 case JMM_VERBOSE_CLASS: 866 return ClassLoadingService::get_verbose(); 867 case JMM_THREAD_CONTENTION_MONITORING: 868 return ThreadService::is_thread_monitoring_contention(); 869 case JMM_THREAD_CPU_TIME: 870 return ThreadService::is_thread_cpu_time_enabled(); 871 case JMM_THREAD_ALLOCATED_MEMORY: 872 return ThreadService::is_thread_allocated_memory_enabled(); 873 default: 874 assert(0, "Unrecognized attribute"); 875 return false; 876 } 877 JVM_END 878 879 // Sets the given boolean attribute and returns the previous value. 880 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) 881 switch (att) { 882 case JMM_VERBOSE_GC: 883 return MemoryService::set_verbose(flag != 0); 884 case JMM_VERBOSE_CLASS: 885 return ClassLoadingService::set_verbose(flag != 0); 886 case JMM_THREAD_CONTENTION_MONITORING: 887 return ThreadService::set_thread_monitoring_contention(flag != 0); 888 case JMM_THREAD_CPU_TIME: 889 return ThreadService::set_thread_cpu_time_enabled(flag != 0); 890 case JMM_THREAD_ALLOCATED_MEMORY: 891 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); 892 default: 893 assert(0, "Unrecognized attribute"); 894 return false; 895 } 896 JVM_END 897 898 899 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { 900 switch (att) { 901 case JMM_GC_TIME_MS: 902 return mgr->gc_time_ms(); 903 904 case JMM_GC_COUNT: 905 return mgr->gc_count(); 906 907 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: 908 // current implementation only has 1 ext attribute 909 return 1; 910 911 default: 912 assert(0, "Unrecognized GC attribute"); 913 return -1; 914 } 915 } 916 917 class VmThreadCountClosure: public ThreadClosure { 918 private: 919 int _count; 920 public: 921 VmThreadCountClosure() : _count(0) {}; 922 void do_thread(Thread* thread); 923 int count() { return _count; } 924 }; 925 926 void VmThreadCountClosure::do_thread(Thread* thread) { 927 // exclude externally visible JavaThreads 928 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { 929 return; 930 } 931 932 _count++; 933 } 934 935 static jint get_vm_thread_count() { 936 VmThreadCountClosure vmtcc; 937 { 938 MutexLockerEx ml(Threads_lock); 939 Threads::threads_do(&vmtcc); 940 } 941 942 return vmtcc.count(); 943 } 944 945 static jint get_num_flags() { 946 // last flag entry is always NULL, so subtract 1 947 int nFlags = (int) Flag::numFlags - 1; 948 int count = 0; 949 for (int i = 0; i < nFlags; i++) { 950 Flag* flag = &Flag::flags[i]; 951 // Exclude the locked (diagnostic, experimental) flags 952 if (flag->is_unlocked() || flag->is_unlocker()) { 953 count++; 954 } 955 } 956 return count; 957 } 958 959 static jlong get_long_attribute(jmmLongAttribute att) { 960 switch (att) { 961 case JMM_CLASS_LOADED_COUNT: 962 return ClassLoadingService::loaded_class_count(); 963 964 case JMM_CLASS_UNLOADED_COUNT: 965 return ClassLoadingService::unloaded_class_count(); 966 967 case JMM_THREAD_TOTAL_COUNT: 968 return ThreadService::get_total_thread_count(); 969 970 case JMM_THREAD_LIVE_COUNT: 971 return ThreadService::get_live_thread_count(); 972 973 case JMM_THREAD_PEAK_COUNT: 974 return ThreadService::get_peak_thread_count(); 975 976 case JMM_THREAD_DAEMON_COUNT: 977 return ThreadService::get_daemon_thread_count(); 978 979 case JMM_JVM_INIT_DONE_TIME_MS: 980 return Management::vm_init_done_time(); 981 982 case JMM_JVM_UPTIME_MS: 983 return Management::ticks_to_ms(os::elapsed_counter()); 984 985 case JMM_COMPILE_TOTAL_TIME_MS: 986 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); 987 988 case JMM_OS_PROCESS_ID: 989 return os::current_process_id(); 990 991 // Hotspot-specific counters 992 case JMM_CLASS_LOADED_BYTES: 993 return ClassLoadingService::loaded_class_bytes(); 994 995 case JMM_CLASS_UNLOADED_BYTES: 996 return ClassLoadingService::unloaded_class_bytes(); 997 998 case JMM_SHARED_CLASS_LOADED_COUNT: 999 return ClassLoadingService::loaded_shared_class_count(); 1000 1001 case JMM_SHARED_CLASS_UNLOADED_COUNT: 1002 return ClassLoadingService::unloaded_shared_class_count(); 1003 1004 1005 case JMM_SHARED_CLASS_LOADED_BYTES: 1006 return ClassLoadingService::loaded_shared_class_bytes(); 1007 1008 case JMM_SHARED_CLASS_UNLOADED_BYTES: 1009 return ClassLoadingService::unloaded_shared_class_bytes(); 1010 1011 case JMM_TOTAL_CLASSLOAD_TIME_MS: 1012 return ClassLoader::classloader_time_ms(); 1013 1014 case JMM_VM_GLOBAL_COUNT: 1015 return get_num_flags(); 1016 1017 case JMM_SAFEPOINT_COUNT: 1018 return RuntimeService::safepoint_count(); 1019 1020 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: 1021 return RuntimeService::safepoint_sync_time_ms(); 1022 1023 case JMM_TOTAL_STOPPED_TIME_MS: 1024 return RuntimeService::safepoint_time_ms(); 1025 1026 case JMM_TOTAL_APP_TIME_MS: 1027 return RuntimeService::application_time_ms(); 1028 1029 case JMM_VM_THREAD_COUNT: 1030 return get_vm_thread_count(); 1031 1032 case JMM_CLASS_INIT_TOTAL_COUNT: 1033 return ClassLoader::class_init_count(); 1034 1035 case JMM_CLASS_INIT_TOTAL_TIME_MS: 1036 return ClassLoader::class_init_time_ms(); 1037 1038 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: 1039 return ClassLoader::class_verify_time_ms(); 1040 1041 case JMM_METHOD_DATA_SIZE_BYTES: 1042 return ClassLoadingService::class_method_data_size(); 1043 1044 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: 1045 return os::physical_memory(); 1046 1047 default: 1048 return -1; 1049 } 1050 } 1051 1052 1053 // Returns the long value of a given attribute. 1054 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) 1055 if (obj == NULL) { 1056 return get_long_attribute(att); 1057 } else { 1058 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); 1059 if (mgr != NULL) { 1060 return get_gc_attribute(mgr, att); 1061 } 1062 } 1063 return -1; 1064 JVM_END 1065 1066 // Gets the value of all attributes specified in the given array 1067 // and sets the value in the result array. 1068 // Returns the number of attributes found. 1069 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, 1070 jobject obj, 1071 jmmLongAttribute* atts, 1072 jint count, 1073 jlong* result)) 1074 1075 int num_atts = 0; 1076 if (obj == NULL) { 1077 for (int i = 0; i < count; i++) { 1078 result[i] = get_long_attribute(atts[i]); 1079 if (result[i] != -1) { 1080 num_atts++; 1081 } 1082 } 1083 } else { 1084 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); 1085 for (int i = 0; i < count; i++) { 1086 result[i] = get_gc_attribute(mgr, atts[i]); 1087 if (result[i] != -1) { 1088 num_atts++; 1089 } 1090 } 1091 } 1092 return num_atts; 1093 JVM_END 1094 1095 // Helper function to do thread dump for a specific list of threads 1096 static void do_thread_dump(ThreadDumpResult* dump_result, 1097 typeArrayHandle ids_ah, // array of thread ID (long[]) 1098 int num_threads, 1099 int max_depth, 1100 bool with_locked_monitors, 1101 bool with_locked_synchronizers, 1102 TRAPS) { 1103 // no need to actually perform thread dump if no TIDs are specified 1104 if (num_threads == 0) return; 1105 1106 // First get an array of threadObj handles. 1107 // A JavaThread may terminate before we get the stack trace. 1108 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); 1109 { 1110 MutexLockerEx ml(Threads_lock); 1111 for (int i = 0; i < num_threads; i++) { 1112 jlong tid = ids_ah->long_at(i); 1113 JavaThread* jt = Threads::find_java_thread_from_java_tid(tid); 1114 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); 1115 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); 1116 thread_handle_array->append(threadObj_h); 1117 } 1118 } 1119 1120 // Obtain thread dumps and thread snapshot information 1121 VM_ThreadDump op(dump_result, 1122 thread_handle_array, 1123 num_threads, 1124 max_depth, /* stack depth */ 1125 with_locked_monitors, 1126 with_locked_synchronizers); 1127 VMThread::execute(&op); 1128 } 1129 1130 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo 1131 // for the thread ID specified in the corresponding entry in 1132 // the given array of thread IDs; or NULL if the thread does not exist 1133 // or has terminated. 1134 // 1135 // Input parameters: 1136 // ids - array of thread IDs 1137 // maxDepth - the maximum depth of stack traces to be dumped: 1138 // maxDepth == -1 requests to dump entire stack trace. 1139 // maxDepth == 0 requests no stack trace. 1140 // infoArray - array of ThreadInfo objects 1141 // 1142 // QQQ - Why does this method return a value instead of void? 1143 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) 1144 // Check if threads is null 1145 if (ids == NULL || infoArray == NULL) { 1146 THROW_(vmSymbols::java_lang_NullPointerException(), -1); 1147 } 1148 1149 if (maxDepth < -1) { 1150 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 1151 "Invalid maxDepth", -1); 1152 } 1153 1154 ResourceMark rm(THREAD); 1155 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); 1156 typeArrayHandle ids_ah(THREAD, ta); 1157 1158 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); 1159 objArrayOop oa = objArrayOop(infoArray_obj); 1160 objArrayHandle infoArray_h(THREAD, oa); 1161 1162 // validate the thread id array 1163 validate_thread_id_array(ids_ah, CHECK_0); 1164 1165 // validate the ThreadInfo[] parameters 1166 validate_thread_info_array(infoArray_h, CHECK_0); 1167 1168 // infoArray must be of the same length as the given array of thread IDs 1169 int num_threads = ids_ah->length(); 1170 if (num_threads != infoArray_h->length()) { 1171 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 1172 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); 1173 } 1174 1175 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots 1176 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); 1177 1178 // Must use ThreadDumpResult to store the ThreadSnapshot. 1179 // GC may occur after the thread snapshots are taken but before 1180 // this function returns. The threadObj and other oops kept 1181 // in the ThreadSnapshot are marked and adjusted during GC. 1182 ThreadDumpResult dump_result(num_threads); 1183 1184 if (maxDepth == 0) { 1185 // no stack trace dumped - do not need to stop the world 1186 { 1187 MutexLockerEx ml(Threads_lock); 1188 for (int i = 0; i < num_threads; i++) { 1189 jlong tid = ids_ah->long_at(i); 1190 JavaThread* jt = Threads::find_java_thread_from_java_tid(tid); 1191 ThreadSnapshot* ts; 1192 if (jt == NULL) { 1193 // if the thread does not exist or now it is terminated, 1194 // create dummy snapshot 1195 ts = new ThreadSnapshot(); 1196 } else { 1197 ts = new ThreadSnapshot(jt); 1198 } 1199 dump_result.add_thread_snapshot(ts); 1200 } 1201 } 1202 } else { 1203 // obtain thread dump with the specific list of threads with stack trace 1204 do_thread_dump(&dump_result, 1205 ids_ah, 1206 num_threads, 1207 maxDepth, 1208 false, /* no locked monitor */ 1209 false, /* no locked synchronizers */ 1210 CHECK_0); 1211 } 1212 1213 int num_snapshots = dump_result.num_snapshots(); 1214 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); 1215 int index = 0; 1216 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { 1217 // For each thread, create an java/lang/management/ThreadInfo object 1218 // and fill with the thread information 1219 1220 if (ts->threadObj() == NULL) { 1221 // if the thread does not exist or now it is terminated, set threadinfo to NULL 1222 infoArray_h->obj_at_put(index, NULL); 1223 continue; 1224 } 1225 1226 // Create java.lang.management.ThreadInfo object 1227 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); 1228 infoArray_h->obj_at_put(index, info_obj); 1229 } 1230 return 0; 1231 JVM_END 1232 1233 // Dump thread info for the specified threads. 1234 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo 1235 // for the thread ID specified in the corresponding entry in 1236 // the given array of thread IDs; or NULL if the thread does not exist 1237 // or has terminated. 1238 // 1239 // Input parameter: 1240 // ids - array of thread IDs; NULL indicates all live threads 1241 // locked_monitors - if true, dump locked object monitors 1242 // locked_synchronizers - if true, dump locked JSR-166 synchronizers 1243 // 1244 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) 1245 ResourceMark rm(THREAD); 1246 1247 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots 1248 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); 1249 1250 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); 1251 int num_threads = (ta != NULL ? ta->length() : 0); 1252 typeArrayHandle ids_ah(THREAD, ta); 1253 1254 ThreadDumpResult dump_result(num_threads); // can safepoint 1255 1256 if (ids_ah() != NULL) { 1257 1258 // validate the thread id array 1259 validate_thread_id_array(ids_ah, CHECK_NULL); 1260 1261 // obtain thread dump of a specific list of threads 1262 do_thread_dump(&dump_result, 1263 ids_ah, 1264 num_threads, 1265 -1, /* entire stack */ 1266 (locked_monitors ? true : false), /* with locked monitors */ 1267 (locked_synchronizers ? true : false), /* with locked synchronizers */ 1268 CHECK_NULL); 1269 } else { 1270 // obtain thread dump of all threads 1271 VM_ThreadDump op(&dump_result, 1272 -1, /* entire stack */ 1273 (locked_monitors ? true : false), /* with locked monitors */ 1274 (locked_synchronizers ? true : false) /* with locked synchronizers */); 1275 VMThread::execute(&op); 1276 } 1277 1278 int num_snapshots = dump_result.num_snapshots(); 1279 1280 // create the result ThreadInfo[] object 1281 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); 1282 instanceKlassHandle ik (THREAD, k); 1283 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); 1284 objArrayHandle result_h(THREAD, r); 1285 1286 int index = 0; 1287 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { 1288 if (ts->threadObj() == NULL) { 1289 // if the thread does not exist or now it is terminated, set threadinfo to NULL 1290 result_h->obj_at_put(index, NULL); 1291 continue; 1292 } 1293 1294 ThreadStackTrace* stacktrace = ts->get_stack_trace(); 1295 assert(stacktrace != NULL, "Must have a stack trace dumped"); 1296 1297 // Create Object[] filled with locked monitors 1298 // Create int[] filled with the stack depth where a monitor was locked 1299 int num_frames = stacktrace->get_stack_depth(); 1300 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); 1301 1302 // Count the total number of locked monitors 1303 for (int i = 0; i < num_frames; i++) { 1304 StackFrameInfo* frame = stacktrace->stack_frame_at(i); 1305 num_locked_monitors += frame->num_locked_monitors(); 1306 } 1307 1308 objArrayHandle monitors_array; 1309 typeArrayHandle depths_array; 1310 objArrayHandle synchronizers_array; 1311 1312 if (locked_monitors) { 1313 // Constructs Object[] and int[] to contain the object monitor and the stack depth 1314 // where the thread locked it 1315 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); 1316 objArrayHandle mh(THREAD, array); 1317 monitors_array = mh; 1318 1319 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); 1320 typeArrayHandle dh(THREAD, tarray); 1321 depths_array = dh; 1322 1323 int count = 0; 1324 int j = 0; 1325 for (int depth = 0; depth < num_frames; depth++) { 1326 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); 1327 int len = frame->num_locked_monitors(); 1328 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); 1329 for (j = 0; j < len; j++) { 1330 oop monitor = locked_monitors->at(j); 1331 assert(monitor != NULL, "must be a Java object"); 1332 monitors_array->obj_at_put(count, monitor); 1333 depths_array->int_at_put(count, depth); 1334 count++; 1335 } 1336 } 1337 1338 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); 1339 for (j = 0; j < jni_locked_monitors->length(); j++) { 1340 oop object = jni_locked_monitors->at(j); 1341 assert(object != NULL, "must be a Java object"); 1342 monitors_array->obj_at_put(count, object); 1343 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info 1344 depths_array->int_at_put(count, -1); 1345 count++; 1346 } 1347 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); 1348 } 1349 1350 if (locked_synchronizers) { 1351 // Create Object[] filled with locked JSR-166 synchronizers 1352 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); 1353 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); 1354 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); 1355 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); 1356 1357 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); 1358 objArrayHandle sh(THREAD, array); 1359 synchronizers_array = sh; 1360 1361 for (int k = 0; k < num_locked_synchronizers; k++) { 1362 synchronizers_array->obj_at_put(k, locks->at(k)); 1363 } 1364 } 1365 1366 // Create java.lang.management.ThreadInfo object 1367 instanceOop info_obj = Management::create_thread_info_instance(ts, 1368 monitors_array, 1369 depths_array, 1370 synchronizers_array, 1371 CHECK_NULL); 1372 result_h->obj_at_put(index, info_obj); 1373 } 1374 1375 return (jobjectArray) JNIHandles::make_local(env, result_h()); 1376 JVM_END 1377 1378 // Returns an array of Class objects. 1379 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) 1380 ResourceMark rm(THREAD); 1381 1382 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter 1383 1384 int num_classes = lce.num_loaded_classes(); 1385 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); 1386 objArrayHandle classes_ah(THREAD, r); 1387 1388 for (int i = 0; i < num_classes; i++) { 1389 KlassHandle kh = lce.get_klass(i); 1390 oop mirror = kh()->java_mirror(); 1391 classes_ah->obj_at_put(i, mirror); 1392 } 1393 1394 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); 1395 JVM_END 1396 1397 // Reset statistic. Return true if the requested statistic is reset. 1398 // Otherwise, return false. 1399 // 1400 // Input parameters: 1401 // obj - specify which instance the statistic associated with to be reset 1402 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. 1403 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. 1404 // type - the type of statistic to be reset 1405 // 1406 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) 1407 ResourceMark rm(THREAD); 1408 1409 switch (type) { 1410 case JMM_STAT_PEAK_THREAD_COUNT: 1411 ThreadService::reset_peak_thread_count(); 1412 return true; 1413 1414 case JMM_STAT_THREAD_CONTENTION_COUNT: 1415 case JMM_STAT_THREAD_CONTENTION_TIME: { 1416 jlong tid = obj.j; 1417 if (tid < 0) { 1418 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); 1419 } 1420 1421 // Look for the JavaThread of this given tid 1422 MutexLockerEx ml(Threads_lock); 1423 if (tid == 0) { 1424 // reset contention statistics for all threads if tid == 0 1425 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { 1426 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { 1427 ThreadService::reset_contention_count_stat(java_thread); 1428 } else { 1429 ThreadService::reset_contention_time_stat(java_thread); 1430 } 1431 } 1432 } else { 1433 // reset contention statistics for a given thread 1434 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(tid); 1435 if (java_thread == NULL) { 1436 return false; 1437 } 1438 1439 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { 1440 ThreadService::reset_contention_count_stat(java_thread); 1441 } else { 1442 ThreadService::reset_contention_time_stat(java_thread); 1443 } 1444 } 1445 return true; 1446 break; 1447 } 1448 case JMM_STAT_PEAK_POOL_USAGE: { 1449 jobject o = obj.l; 1450 if (o == NULL) { 1451 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); 1452 } 1453 1454 oop pool_obj = JNIHandles::resolve(o); 1455 assert(pool_obj->is_instance(), "Should be an instanceOop"); 1456 instanceHandle ph(THREAD, (instanceOop) pool_obj); 1457 1458 MemoryPool* pool = MemoryService::get_memory_pool(ph); 1459 if (pool != NULL) { 1460 pool->reset_peak_memory_usage(); 1461 return true; 1462 } 1463 break; 1464 } 1465 case JMM_STAT_GC_STAT: { 1466 jobject o = obj.l; 1467 if (o == NULL) { 1468 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); 1469 } 1470 1471 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); 1472 if (mgr != NULL) { 1473 mgr->reset_gc_stat(); 1474 return true; 1475 } 1476 break; 1477 } 1478 default: 1479 assert(0, "Unknown Statistic Type"); 1480 } 1481 return false; 1482 JVM_END 1483 1484 // Returns the fast estimate of CPU time consumed by 1485 // a given thread (in nanoseconds). 1486 // If thread_id == 0, return CPU time for the current thread. 1487 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) 1488 if (!os::is_thread_cpu_time_supported()) { 1489 return -1; 1490 } 1491 1492 if (thread_id < 0) { 1493 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 1494 "Invalid thread ID", -1); 1495 } 1496 1497 JavaThread* java_thread = NULL; 1498 if (thread_id == 0) { 1499 // current thread 1500 return os::current_thread_cpu_time(); 1501 } else { 1502 MutexLockerEx ml(Threads_lock); 1503 java_thread = Threads::find_java_thread_from_java_tid(thread_id); 1504 if (java_thread != NULL) { 1505 return os::thread_cpu_time((Thread*) java_thread); 1506 } 1507 } 1508 return -1; 1509 JVM_END 1510 1511 // Returns a String array of all VM global flag names 1512 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) 1513 // last flag entry is always NULL, so subtract 1 1514 int nFlags = (int) Flag::numFlags - 1; 1515 // allocate a temp array 1516 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), 1517 nFlags, CHECK_0); 1518 objArrayHandle flags_ah(THREAD, r); 1519 int num_entries = 0; 1520 for (int i = 0; i < nFlags; i++) { 1521 Flag* flag = &Flag::flags[i]; 1522 // Exclude notproduct and develop flags in product builds. 1523 if (flag->is_constant_in_binary()) { 1524 continue; 1525 } 1526 // Exclude the locked (experimental, diagnostic) flags 1527 if (flag->is_unlocked() || flag->is_unlocker()) { 1528 Handle s = java_lang_String::create_from_str(flag->_name, CHECK_0); 1529 flags_ah->obj_at_put(num_entries, s()); 1530 num_entries++; 1531 } 1532 } 1533 1534 if (num_entries < nFlags) { 1535 // Return array of right length 1536 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); 1537 for(int i = 0; i < num_entries; i++) { 1538 res->obj_at_put(i, flags_ah->obj_at(i)); 1539 } 1540 return (jobjectArray)JNIHandles::make_local(env, res); 1541 } 1542 1543 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); 1544 JVM_END 1545 1546 // Utility function used by jmm_GetVMGlobals. Returns false if flag type 1547 // can't be determined, true otherwise. If false is returned, then *global 1548 // will be incomplete and invalid. 1549 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { 1550 Handle flag_name; 1551 if (name() == NULL) { 1552 flag_name = java_lang_String::create_from_str(flag->_name, CHECK_false); 1553 } else { 1554 flag_name = name; 1555 } 1556 global->name = (jstring)JNIHandles::make_local(env, flag_name()); 1557 1558 if (flag->is_bool()) { 1559 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; 1560 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; 1561 } else if (flag->is_int()) { 1562 global->value.j = (jlong)flag->get_int(); 1563 global->type = JMM_VMGLOBAL_TYPE_JLONG; 1564 } else if (flag->is_uint()) { 1565 global->value.j = (jlong)flag->get_uint(); 1566 global->type = JMM_VMGLOBAL_TYPE_JLONG; 1567 } else if (flag->is_intx()) { 1568 global->value.j = (jlong)flag->get_intx(); 1569 global->type = JMM_VMGLOBAL_TYPE_JLONG; 1570 } else if (flag->is_uintx()) { 1571 global->value.j = (jlong)flag->get_uintx(); 1572 global->type = JMM_VMGLOBAL_TYPE_JLONG; 1573 } else if (flag->is_uint64_t()) { 1574 global->value.j = (jlong)flag->get_uint64_t(); 1575 global->type = JMM_VMGLOBAL_TYPE_JLONG; 1576 } else if (flag->is_double()) { 1577 global->value.d = (jdouble)flag->get_double(); 1578 global->type = JMM_VMGLOBAL_TYPE_JDOUBLE; 1579 } else if (flag->is_size_t()) { 1580 global->value.j = (jlong)flag->get_size_t(); 1581 global->type = JMM_VMGLOBAL_TYPE_JLONG; 1582 } else if (flag->is_ccstr()) { 1583 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); 1584 global->value.l = (jobject)JNIHandles::make_local(env, str()); 1585 global->type = JMM_VMGLOBAL_TYPE_JSTRING; 1586 } else { 1587 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; 1588 return false; 1589 } 1590 1591 global->writeable = flag->is_writeable(); 1592 global->external = flag->is_external(); 1593 switch (flag->get_origin()) { 1594 case Flag::DEFAULT: 1595 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; 1596 break; 1597 case Flag::COMMAND_LINE: 1598 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; 1599 break; 1600 case Flag::ENVIRON_VAR: 1601 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; 1602 break; 1603 case Flag::CONFIG_FILE: 1604 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; 1605 break; 1606 case Flag::MANAGEMENT: 1607 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; 1608 break; 1609 case Flag::ERGONOMIC: 1610 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; 1611 break; 1612 case Flag::ATTACH_ON_DEMAND: 1613 global->origin = JMM_VMGLOBAL_ORIGIN_ATTACH_ON_DEMAND; 1614 break; 1615 default: 1616 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; 1617 } 1618 1619 return true; 1620 } 1621 1622 // Fill globals array of count length with jmmVMGlobal entries 1623 // specified by names. If names == NULL, fill globals array 1624 // with all Flags. Return value is number of entries 1625 // created in globals. 1626 // If a Flag with a given name in an array element does not 1627 // exist, globals[i].name will be set to NULL. 1628 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, 1629 jobjectArray names, 1630 jmmVMGlobal *globals, 1631 jint count)) 1632 1633 1634 if (globals == NULL) { 1635 THROW_(vmSymbols::java_lang_NullPointerException(), 0); 1636 } 1637 1638 ResourceMark rm(THREAD); 1639 1640 if (names != NULL) { 1641 // return the requested globals 1642 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); 1643 objArrayHandle names_ah(THREAD, ta); 1644 // Make sure we have a String array 1645 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass(); 1646 if (element_klass != SystemDictionary::String_klass()) { 1647 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 1648 "Array element type is not String class", 0); 1649 } 1650 1651 int names_length = names_ah->length(); 1652 int num_entries = 0; 1653 for (int i = 0; i < names_length && i < count; i++) { 1654 oop s = names_ah->obj_at(i); 1655 if (s == NULL) { 1656 THROW_(vmSymbols::java_lang_NullPointerException(), 0); 1657 } 1658 1659 Handle sh(THREAD, s); 1660 char* str = java_lang_String::as_utf8_string(s); 1661 Flag* flag = Flag::find_flag(str, strlen(str)); 1662 if (flag != NULL && 1663 add_global_entry(env, sh, &globals[i], flag, THREAD)) { 1664 num_entries++; 1665 } else { 1666 globals[i].name = NULL; 1667 } 1668 } 1669 return num_entries; 1670 } else { 1671 // return all globals if names == NULL 1672 1673 // last flag entry is always NULL, so subtract 1 1674 int nFlags = (int) Flag::numFlags - 1; 1675 Handle null_h; 1676 int num_entries = 0; 1677 for (int i = 0; i < nFlags && num_entries < count; i++) { 1678 Flag* flag = &Flag::flags[i]; 1679 // Exclude notproduct and develop flags in product builds. 1680 if (flag->is_constant_in_binary()) { 1681 continue; 1682 } 1683 // Exclude the locked (diagnostic, experimental) flags 1684 if ((flag->is_unlocked() || flag->is_unlocker()) && 1685 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { 1686 num_entries++; 1687 } 1688 } 1689 return num_entries; 1690 } 1691 JVM_END 1692 1693 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) 1694 ResourceMark rm(THREAD); 1695 1696 oop fn = JNIHandles::resolve_external_guard(flag_name); 1697 if (fn == NULL) { 1698 THROW_MSG(vmSymbols::java_lang_NullPointerException(), 1699 "The flag name cannot be null."); 1700 } 1701 char* name = java_lang_String::as_utf8_string(fn); 1702 1703 FormatBuffer<80> err_msg("%s", ""); 1704 int succeed = WriteableFlags::set_flag(name, new_value, Flag::MANAGEMENT, err_msg); 1705 1706 if (succeed != WriteableFlags::SUCCESS) { 1707 if (succeed == WriteableFlags::MISSING_VALUE) { 1708 // missing value causes NPE to be thrown 1709 THROW(vmSymbols::java_lang_NullPointerException()); 1710 } else { 1711 // all the other errors are reported as IAE with the appropriate error message 1712 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 1713 err_msg.buffer()); 1714 } 1715 } 1716 assert(succeed == WriteableFlags::SUCCESS, "Setting flag should succeed"); 1717 JVM_END 1718 1719 class ThreadTimesClosure: public ThreadClosure { 1720 private: 1721 objArrayHandle _names_strings; 1722 char **_names_chars; 1723 typeArrayHandle _times; 1724 int _names_len; 1725 int _times_len; 1726 int _count; 1727 1728 public: 1729 ThreadTimesClosure(objArrayHandle names, typeArrayHandle times); 1730 ~ThreadTimesClosure(); 1731 virtual void do_thread(Thread* thread); 1732 void do_unlocked(); 1733 int count() { return _count; } 1734 }; 1735 1736 ThreadTimesClosure::ThreadTimesClosure(objArrayHandle names, 1737 typeArrayHandle times) { 1738 assert(names() != NULL, "names was NULL"); 1739 assert(times() != NULL, "times was NULL"); 1740 _names_strings = names; 1741 _names_len = names->length(); 1742 _names_chars = NEW_C_HEAP_ARRAY(char*, _names_len, mtInternal); 1743 _times = times; 1744 _times_len = times->length(); 1745 _count = 0; 1746 } 1747 1748 // 1749 // Called with Threads_lock held 1750 // 1751 void ThreadTimesClosure::do_thread(Thread* thread) { 1752 assert(thread != NULL, "thread was NULL"); 1753 1754 // exclude externally visible JavaThreads 1755 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { 1756 return; 1757 } 1758 1759 if (_count >= _names_len || _count >= _times_len) { 1760 // skip if the result array is not big enough 1761 return; 1762 } 1763 1764 EXCEPTION_MARK; 1765 ResourceMark rm(THREAD); // thread->name() uses ResourceArea 1766 1767 assert(thread->name() != NULL, "All threads should have a name"); 1768 _names_chars[_count] = os::strdup(thread->name()); 1769 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? 1770 os::thread_cpu_time(thread) : -1); 1771 _count++; 1772 } 1773 1774 // Called without Threads_lock, we can allocate String objects. 1775 void ThreadTimesClosure::do_unlocked() { 1776 1777 EXCEPTION_MARK; 1778 for (int i = 0; i < _count; i++) { 1779 Handle s = java_lang_String::create_from_str(_names_chars[i], CHECK); 1780 _names_strings->obj_at_put(i, s()); 1781 } 1782 } 1783 1784 ThreadTimesClosure::~ThreadTimesClosure() { 1785 for (int i = 0; i < _count; i++) { 1786 os::free(_names_chars[i]); 1787 } 1788 FREE_C_HEAP_ARRAY(char *, _names_chars); 1789 } 1790 1791 // Fills names with VM internal thread names and times with the corresponding 1792 // CPU times. If names or times is NULL, a NullPointerException is thrown. 1793 // If the element type of names is not String, an IllegalArgumentException is 1794 // thrown. 1795 // If an array is not large enough to hold all the entries, only the entries 1796 // that fit will be returned. Return value is the number of VM internal 1797 // threads entries. 1798 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, 1799 jobjectArray names, 1800 jlongArray times)) 1801 if (names == NULL || times == NULL) { 1802 THROW_(vmSymbols::java_lang_NullPointerException(), 0); 1803 } 1804 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); 1805 objArrayHandle names_ah(THREAD, na); 1806 1807 // Make sure we have a String array 1808 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass(); 1809 if (element_klass != SystemDictionary::String_klass()) { 1810 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 1811 "Array element type is not String class", 0); 1812 } 1813 1814 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); 1815 typeArrayHandle times_ah(THREAD, ta); 1816 1817 ThreadTimesClosure ttc(names_ah, times_ah); 1818 { 1819 MutexLockerEx ml(Threads_lock); 1820 Threads::threads_do(&ttc); 1821 } 1822 ttc.do_unlocked(); 1823 return ttc.count(); 1824 JVM_END 1825 1826 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { 1827 ResourceMark rm(THREAD); 1828 1829 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); 1830 VMThread::execute(&op); 1831 1832 DeadlockCycle* deadlocks = op.result(); 1833 if (deadlocks == NULL) { 1834 // no deadlock found and return 1835 return Handle(); 1836 } 1837 1838 int num_threads = 0; 1839 DeadlockCycle* cycle; 1840 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { 1841 num_threads += cycle->num_threads(); 1842 } 1843 1844 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); 1845 objArrayHandle threads_ah(THREAD, r); 1846 1847 int index = 0; 1848 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { 1849 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); 1850 int len = deadlock_threads->length(); 1851 for (int i = 0; i < len; i++) { 1852 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); 1853 index++; 1854 } 1855 } 1856 return threads_ah; 1857 } 1858 1859 // Finds cycles of threads that are deadlocked involved in object monitors 1860 // and JSR-166 synchronizers. 1861 // Returns an array of Thread objects which are in deadlock, if any. 1862 // Otherwise, returns NULL. 1863 // 1864 // Input parameter: 1865 // object_monitors_only - if true, only check object monitors 1866 // 1867 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) 1868 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); 1869 return (jobjectArray) JNIHandles::make_local(env, result()); 1870 JVM_END 1871 1872 // Finds cycles of threads that are deadlocked on monitor locks 1873 // Returns an array of Thread objects which are in deadlock, if any. 1874 // Otherwise, returns NULL. 1875 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) 1876 Handle result = find_deadlocks(true, CHECK_0); 1877 return (jobjectArray) JNIHandles::make_local(env, result()); 1878 JVM_END 1879 1880 // Gets the information about GC extension attributes including 1881 // the name of the attribute, its type, and a short description. 1882 // 1883 // Input parameters: 1884 // mgr - GC memory manager 1885 // info - caller allocated array of jmmExtAttributeInfo 1886 // count - number of elements of the info array 1887 // 1888 // Returns the number of GC extension attributes filled in the info array; or 1889 // -1 if info is not big enough 1890 // 1891 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) 1892 // All GC memory managers have 1 attribute (number of GC threads) 1893 if (count == 0) { 1894 return 0; 1895 } 1896 1897 if (info == NULL) { 1898 THROW_(vmSymbols::java_lang_NullPointerException(), 0); 1899 } 1900 1901 info[0].name = "GcThreadCount"; 1902 info[0].type = 'I'; 1903 info[0].description = "Number of GC threads"; 1904 return 1; 1905 JVM_END 1906 1907 // verify the given array is an array of java/lang/management/MemoryUsage objects 1908 // of a given length and return the objArrayOop 1909 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { 1910 if (array == NULL) { 1911 THROW_(vmSymbols::java_lang_NullPointerException(), 0); 1912 } 1913 1914 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); 1915 objArrayHandle array_h(THREAD, oa); 1916 1917 // array must be of the given length 1918 if (length != array_h->length()) { 1919 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 1920 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); 1921 } 1922 1923 // check if the element of array is of type MemoryUsage class 1924 Klass* usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); 1925 Klass* element_klass = ObjArrayKlass::cast(array_h->klass())->element_klass(); 1926 if (element_klass != usage_klass) { 1927 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 1928 "The element type is not MemoryUsage class", 0); 1929 } 1930 1931 return array_h(); 1932 } 1933 1934 // Gets the statistics of the last GC of a given GC memory manager. 1935 // Input parameters: 1936 // obj - GarbageCollectorMXBean object 1937 // gc_stat - caller allocated jmmGCStat where: 1938 // a. before_gc_usage - array of MemoryUsage objects 1939 // b. after_gc_usage - array of MemoryUsage objects 1940 // c. gc_ext_attributes_values_size is set to the 1941 // gc_ext_attribute_values array allocated 1942 // d. gc_ext_attribute_values is a caller allocated array of jvalue. 1943 // 1944 // On return, 1945 // gc_index == 0 indicates no GC statistics available 1946 // 1947 // before_gc_usage and after_gc_usage - filled with per memory pool 1948 // before and after GC usage in the same order as the memory pools 1949 // returned by GetMemoryPools for a given GC memory manager. 1950 // num_gc_ext_attributes indicates the number of elements in 1951 // the gc_ext_attribute_values array is filled; or 1952 // -1 if the gc_ext_attributes_values array is not big enough 1953 // 1954 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) 1955 ResourceMark rm(THREAD); 1956 1957 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { 1958 THROW(vmSymbols::java_lang_NullPointerException()); 1959 } 1960 1961 // Get the GCMemoryManager 1962 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); 1963 1964 // Make a copy of the last GC statistics 1965 // GC may occur while constructing the last GC information 1966 int num_pools = MemoryService::num_memory_pools(); 1967 GCStatInfo stat(num_pools); 1968 if (mgr->get_last_gc_stat(&stat) == 0) { 1969 gc_stat->gc_index = 0; 1970 return; 1971 } 1972 1973 gc_stat->gc_index = stat.gc_index(); 1974 gc_stat->start_time = Management::ticks_to_ms(stat.start_time()); 1975 gc_stat->end_time = Management::ticks_to_ms(stat.end_time()); 1976 1977 // Current implementation does not have GC extension attributes 1978 gc_stat->num_gc_ext_attributes = 0; 1979 1980 // Fill the arrays of MemoryUsage objects with before and after GC 1981 // per pool memory usage 1982 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, 1983 num_pools, 1984 CHECK); 1985 objArrayHandle usage_before_gc_ah(THREAD, bu); 1986 1987 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, 1988 num_pools, 1989 CHECK); 1990 objArrayHandle usage_after_gc_ah(THREAD, au); 1991 1992 for (int i = 0; i < num_pools; i++) { 1993 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK); 1994 Handle after_usage; 1995 1996 MemoryUsage u = stat.after_gc_usage_for_pool(i); 1997 if (u.max_size() == 0 && u.used() > 0) { 1998 // If max size == 0, this pool is a survivor space. 1999 // Set max size = -1 since the pools will be swapped after GC. 2000 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); 2001 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); 2002 } else { 2003 after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK); 2004 } 2005 usage_before_gc_ah->obj_at_put(i, before_usage()); 2006 usage_after_gc_ah->obj_at_put(i, after_usage()); 2007 } 2008 2009 if (gc_stat->gc_ext_attribute_values_size > 0) { 2010 // Current implementation only has 1 attribute (number of GC threads) 2011 // The type is 'I' 2012 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); 2013 } 2014 JVM_END 2015 2016 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) 2017 ResourceMark rm(THREAD); 2018 // Get the GCMemoryManager 2019 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); 2020 mgr->set_notification_enabled(enabled?true:false); 2021 JVM_END 2022 2023 // Dump heap - Returns 0 if succeeds. 2024 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) 2025 #if INCLUDE_SERVICES 2026 ResourceMark rm(THREAD); 2027 oop on = JNIHandles::resolve_external_guard(outputfile); 2028 if (on == NULL) { 2029 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), 2030 "Output file name cannot be null.", -1); 2031 } 2032 char* name = java_lang_String::as_platform_dependent_str(on, CHECK_(-1)); 2033 if (name == NULL) { 2034 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), 2035 "Output file name cannot be null.", -1); 2036 } 2037 HeapDumper dumper(live ? true : false); 2038 if (dumper.dump(name) != 0) { 2039 const char* errmsg = dumper.error_as_C_string(); 2040 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); 2041 } 2042 return 0; 2043 #else // INCLUDE_SERVICES 2044 return -1; 2045 #endif // INCLUDE_SERVICES 2046 JVM_END 2047 2048 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env)) 2049 ResourceMark rm(THREAD); 2050 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(DCmd_Source_MBean); 2051 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(), 2052 dcmd_list->length(), CHECK_NULL); 2053 objArrayHandle cmd_array(THREAD, cmd_array_oop); 2054 for (int i = 0; i < dcmd_list->length(); i++) { 2055 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL); 2056 cmd_array->obj_at_put(i, cmd_name); 2057 } 2058 return (jobjectArray) JNIHandles::make_local(env, cmd_array()); 2059 JVM_END 2060 2061 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds, 2062 dcmdInfo* infoArray)) 2063 if (cmds == NULL || infoArray == NULL) { 2064 THROW(vmSymbols::java_lang_NullPointerException()); 2065 } 2066 2067 ResourceMark rm(THREAD); 2068 2069 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds)); 2070 objArrayHandle cmds_ah(THREAD, ca); 2071 2072 // Make sure we have a String array 2073 Klass* element_klass = ObjArrayKlass::cast(cmds_ah->klass())->element_klass(); 2074 if (element_klass != SystemDictionary::String_klass()) { 2075 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 2076 "Array element type is not String class"); 2077 } 2078 2079 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(DCmd_Source_MBean); 2080 2081 int num_cmds = cmds_ah->length(); 2082 for (int i = 0; i < num_cmds; i++) { 2083 oop cmd = cmds_ah->obj_at(i); 2084 if (cmd == NULL) { 2085 THROW_MSG(vmSymbols::java_lang_NullPointerException(), 2086 "Command name cannot be null."); 2087 } 2088 char* cmd_name = java_lang_String::as_utf8_string(cmd); 2089 if (cmd_name == NULL) { 2090 THROW_MSG(vmSymbols::java_lang_NullPointerException(), 2091 "Command name cannot be null."); 2092 } 2093 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name); 2094 if (pos == -1) { 2095 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 2096 "Unknown diagnostic command"); 2097 } 2098 DCmdInfo* info = info_list->at(pos); 2099 infoArray[i].name = info->name(); 2100 infoArray[i].description = info->description(); 2101 infoArray[i].impact = info->impact(); 2102 JavaPermission p = info->permission(); 2103 infoArray[i].permission_class = p._class; 2104 infoArray[i].permission_name = p._name; 2105 infoArray[i].permission_action = p._action; 2106 infoArray[i].num_arguments = info->num_arguments(); 2107 infoArray[i].enabled = info->is_enabled(); 2108 } 2109 JVM_END 2110 2111 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env, 2112 jstring command, dcmdArgInfo* infoArray)) 2113 ResourceMark rm(THREAD); 2114 oop cmd = JNIHandles::resolve_external_guard(command); 2115 if (cmd == NULL) { 2116 THROW_MSG(vmSymbols::java_lang_NullPointerException(), 2117 "Command line cannot be null."); 2118 } 2119 char* cmd_name = java_lang_String::as_utf8_string(cmd); 2120 if (cmd_name == NULL) { 2121 THROW_MSG(vmSymbols::java_lang_NullPointerException(), 2122 "Command line content cannot be null."); 2123 } 2124 DCmd* dcmd = NULL; 2125 DCmdFactory*factory = DCmdFactory::factory(DCmd_Source_MBean, cmd_name, 2126 strlen(cmd_name)); 2127 if (factory != NULL) { 2128 dcmd = factory->create_resource_instance(NULL); 2129 } 2130 if (dcmd == NULL) { 2131 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 2132 "Unknown diagnostic command"); 2133 } 2134 DCmdMark mark(dcmd); 2135 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array(); 2136 if (array->length() == 0) { 2137 return; 2138 } 2139 for (int i = 0; i < array->length(); i++) { 2140 infoArray[i].name = array->at(i)->name(); 2141 infoArray[i].description = array->at(i)->description(); 2142 infoArray[i].type = array->at(i)->type(); 2143 infoArray[i].default_string = array->at(i)->default_string(); 2144 infoArray[i].mandatory = array->at(i)->is_mandatory(); 2145 infoArray[i].option = array->at(i)->is_option(); 2146 infoArray[i].multiple = array->at(i)->is_multiple(); 2147 infoArray[i].position = array->at(i)->position(); 2148 } 2149 return; 2150 JVM_END 2151 2152 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline)) 2153 ResourceMark rm(THREAD); 2154 oop cmd = JNIHandles::resolve_external_guard(commandline); 2155 if (cmd == NULL) { 2156 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 2157 "Command line cannot be null."); 2158 } 2159 char* cmdline = java_lang_String::as_utf8_string(cmd); 2160 if (cmdline == NULL) { 2161 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), 2162 "Command line content cannot be null."); 2163 } 2164 bufferedStream output; 2165 DCmd::parse_and_execute(DCmd_Source_MBean, &output, cmdline, ' ', CHECK_NULL); 2166 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL); 2167 return (jstring) JNIHandles::make_local(env, result); 2168 JVM_END 2169 2170 JVM_ENTRY(void, jmm_SetDiagnosticFrameworkNotificationEnabled(JNIEnv *env, jboolean enabled)) 2171 DCmdFactory::set_jmx_notification_enabled(enabled?true:false); 2172 JVM_END 2173 2174 jlong Management::ticks_to_ms(jlong ticks) { 2175 assert(os::elapsed_frequency() > 0, "Must be non-zero"); 2176 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) 2177 * (double)1000.0); 2178 } 2179 #endif // INCLUDE_MANAGEMENT 2180 2181 // Gets an array containing the amount of memory allocated on the Java 2182 // heap for a set of threads (in bytes). Each element of the array is 2183 // the amount of memory allocated for the thread ID specified in the 2184 // corresponding entry in the given array of thread IDs; or -1 if the 2185 // thread does not exist or has terminated. 2186 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, 2187 jlongArray sizeArray)) 2188 // Check if threads is null 2189 if (ids == NULL || sizeArray == NULL) { 2190 THROW(vmSymbols::java_lang_NullPointerException()); 2191 } 2192 2193 ResourceMark rm(THREAD); 2194 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); 2195 typeArrayHandle ids_ah(THREAD, ta); 2196 2197 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); 2198 typeArrayHandle sizeArray_h(THREAD, sa); 2199 2200 // validate the thread id array 2201 validate_thread_id_array(ids_ah, CHECK); 2202 2203 // sizeArray must be of the same length as the given array of thread IDs 2204 int num_threads = ids_ah->length(); 2205 if (num_threads != sizeArray_h->length()) { 2206 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 2207 "The length of the given long array does not match the length of " 2208 "the given array of thread IDs"); 2209 } 2210 2211 MutexLockerEx ml(Threads_lock); 2212 for (int i = 0; i < num_threads; i++) { 2213 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(ids_ah->long_at(i)); 2214 if (java_thread != NULL) { 2215 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); 2216 } 2217 } 2218 JVM_END 2219 2220 // Returns the CPU time consumed by a given thread (in nanoseconds). 2221 // If thread_id == 0, CPU time for the current thread is returned. 2222 // If user_sys_cpu_time = true, user level and system CPU time of 2223 // a given thread is returned; otherwise, only user level CPU time 2224 // is returned. 2225 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) 2226 if (!os::is_thread_cpu_time_supported()) { 2227 return -1; 2228 } 2229 2230 if (thread_id < 0) { 2231 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), 2232 "Invalid thread ID", -1); 2233 } 2234 2235 JavaThread* java_thread = NULL; 2236 if (thread_id == 0) { 2237 // current thread 2238 return os::current_thread_cpu_time(user_sys_cpu_time != 0); 2239 } else { 2240 MutexLockerEx ml(Threads_lock); 2241 java_thread = Threads::find_java_thread_from_java_tid(thread_id); 2242 if (java_thread != NULL) { 2243 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); 2244 } 2245 } 2246 return -1; 2247 JVM_END 2248 2249 // Gets an array containing the CPU times consumed by a set of threads 2250 // (in nanoseconds). Each element of the array is the CPU time for the 2251 // thread ID specified in the corresponding entry in the given array 2252 // of thread IDs; or -1 if the thread does not exist or has terminated. 2253 // If user_sys_cpu_time = true, the sum of user level and system CPU time 2254 // for the given thread is returned; otherwise, only user level CPU time 2255 // is returned. 2256 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, 2257 jlongArray timeArray, 2258 jboolean user_sys_cpu_time)) 2259 // Check if threads is null 2260 if (ids == NULL || timeArray == NULL) { 2261 THROW(vmSymbols::java_lang_NullPointerException()); 2262 } 2263 2264 ResourceMark rm(THREAD); 2265 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); 2266 typeArrayHandle ids_ah(THREAD, ta); 2267 2268 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); 2269 typeArrayHandle timeArray_h(THREAD, tia); 2270 2271 // validate the thread id array 2272 validate_thread_id_array(ids_ah, CHECK); 2273 2274 // timeArray must be of the same length as the given array of thread IDs 2275 int num_threads = ids_ah->length(); 2276 if (num_threads != timeArray_h->length()) { 2277 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 2278 "The length of the given long array does not match the length of " 2279 "the given array of thread IDs"); 2280 } 2281 2282 MutexLockerEx ml(Threads_lock); 2283 for (int i = 0; i < num_threads; i++) { 2284 JavaThread* java_thread = Threads::find_java_thread_from_java_tid(ids_ah->long_at(i)); 2285 if (java_thread != NULL) { 2286 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, 2287 user_sys_cpu_time != 0)); 2288 } 2289 } 2290 JVM_END 2291 2292 2293 2294 #if INCLUDE_MANAGEMENT 2295 const struct jmmInterface_1_ jmm_interface = { 2296 NULL, 2297 NULL, 2298 jmm_GetVersion, 2299 jmm_GetOptionalSupport, 2300 jmm_GetInputArguments, 2301 jmm_GetThreadInfo, 2302 jmm_GetInputArgumentArray, 2303 jmm_GetMemoryPools, 2304 jmm_GetMemoryManagers, 2305 jmm_GetMemoryPoolUsage, 2306 jmm_GetPeakMemoryPoolUsage, 2307 jmm_GetThreadAllocatedMemory, 2308 jmm_GetMemoryUsage, 2309 jmm_GetLongAttribute, 2310 jmm_GetBoolAttribute, 2311 jmm_SetBoolAttribute, 2312 jmm_GetLongAttributes, 2313 jmm_FindMonitorDeadlockedThreads, 2314 jmm_GetThreadCpuTime, 2315 jmm_GetVMGlobalNames, 2316 jmm_GetVMGlobals, 2317 jmm_GetInternalThreadTimes, 2318 jmm_ResetStatistic, 2319 jmm_SetPoolSensor, 2320 jmm_SetPoolThreshold, 2321 jmm_GetPoolCollectionUsage, 2322 jmm_GetGCExtAttributeInfo, 2323 jmm_GetLastGCStat, 2324 jmm_GetThreadCpuTimeWithKind, 2325 jmm_GetThreadCpuTimesWithKind, 2326 jmm_DumpHeap0, 2327 jmm_FindDeadlockedThreads, 2328 jmm_SetVMGlobal, 2329 NULL, 2330 jmm_DumpThreads, 2331 jmm_SetGCNotificationEnabled, 2332 jmm_GetDiagnosticCommands, 2333 jmm_GetDiagnosticCommandInfo, 2334 jmm_GetDiagnosticCommandArgumentsInfo, 2335 jmm_ExecuteDiagnosticCommand, 2336 jmm_SetDiagnosticFrameworkNotificationEnabled 2337 }; 2338 #endif // INCLUDE_MANAGEMENT 2339 2340 void* Management::get_jmm_interface(int version) { 2341 #if INCLUDE_MANAGEMENT 2342 if (version == JMM_VERSION_1_0) { 2343 return (void*) &jmm_interface; 2344 } 2345 #endif // INCLUDE_MANAGEMENT 2346 return NULL; 2347 }