Mercurial > hg > truffle
annotate src/share/vm/services/management.cpp @ 1064:473cce303f13
6887571: Increase default heap config sizes
Summary: Apply modification of existing server heap size ergo to all collectors except CMS.
Reviewed-by: jmasa, ysr, xlu
| author | phh |
|---|---|
| date | Wed, 28 Oct 2009 16:25:51 -0400 |
| parents | 0fbdb4381b99 |
| children | ba7ea42fc66e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 2003-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_management.cpp.incl" | |
| 27 | |
| 28 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
| 29 PerfVariable* Management::_end_vm_creation_time = NULL; | |
| 30 PerfVariable* Management::_vm_init_done_time = NULL; | |
| 31 | |
| 32 klassOop Management::_sensor_klass = NULL; | |
| 33 klassOop Management::_threadInfo_klass = NULL; | |
| 34 klassOop Management::_memoryUsage_klass = NULL; | |
| 35 klassOop Management::_memoryPoolMXBean_klass = NULL; | |
| 36 klassOop Management::_memoryManagerMXBean_klass = NULL; | |
| 37 klassOop Management::_garbageCollectorMXBean_klass = NULL; | |
| 38 klassOop Management::_managementFactory_klass = NULL; | |
| 39 | |
| 40 jmmOptionalSupport Management::_optional_support = {0}; | |
| 41 TimeStamp Management::_stamp; | |
| 42 | |
| 43 void management_init() { | |
| 44 Management::init(); | |
| 45 ThreadService::init(); | |
| 46 RuntimeService::init(); | |
| 47 ClassLoadingService::init(); | |
| 48 } | |
| 49 | |
| 50 void Management::init() { | |
| 51 EXCEPTION_MARK; | |
| 52 | |
| 53 // These counters are for java.lang.management API support. | |
| 54 // They are created even if -XX:-UsePerfData is set and in | |
| 55 // that case, they will be allocated on C heap. | |
| 56 | |
| 57 _begin_vm_creation_time = | |
| 58 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
| 59 PerfData::U_None, CHECK); | |
| 60 | |
| 61 _end_vm_creation_time = | |
| 62 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
| 63 PerfData::U_None, CHECK); | |
| 64 | |
| 65 _vm_init_done_time = | |
| 66 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
| 67 PerfData::U_None, CHECK); | |
| 68 | |
| 69 // Initialize optional support | |
| 70 _optional_support.isLowMemoryDetectionSupported = 1; | |
| 71 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
| 72 _optional_support.isThreadContentionMonitoringSupported = 1; | |
| 73 | |
| 74 if (os::is_thread_cpu_time_supported()) { | |
| 75 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
| 76 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
| 77 } else { | |
| 78 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
| 79 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
| 80 } | |
| 81 _optional_support.isBootClassPathSupported = 1; | |
| 82 _optional_support.isObjectMonitorUsageSupported = 1; | |
| 83 #ifndef SERVICES_KERNEL | |
| 84 // This depends on the heap inspector | |
| 85 _optional_support.isSynchronizerUsageSupported = 1; | |
| 86 #endif // SERVICES_KERNEL | |
| 87 } | |
| 88 | |
| 89 void Management::initialize(TRAPS) { | |
| 90 // Start the low memory detector thread | |
| 91 LowMemoryDetector::initialize(); | |
| 92 | |
| 93 if (ManagementServer) { | |
| 94 ResourceMark rm(THREAD); | |
| 95 HandleMark hm(THREAD); | |
| 96 | |
| 97 // Load and initialize the sun.management.Agent class | |
| 98 // invoke startAgent method to start the management server | |
| 99 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
| 100 klassOop k = SystemDictionary::resolve_or_fail(vmSymbolHandles::sun_management_Agent(), | |
| 101 loader, | |
| 102 Handle(), | |
| 103 true, | |
| 104 CHECK); | |
| 105 instanceKlassHandle ik (THREAD, k); | |
| 106 | |
| 107 JavaValue result(T_VOID); | |
| 108 JavaCalls::call_static(&result, | |
| 109 ik, | |
| 110 vmSymbolHandles::startAgent_name(), | |
| 111 vmSymbolHandles::void_method_signature(), | |
| 112 CHECK); | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 void Management::get_optional_support(jmmOptionalSupport* support) { | |
| 117 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
| 118 } | |
| 119 | |
| 120 klassOop Management::load_and_initialize_klass(symbolHandle sh, TRAPS) { | |
| 121 klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); | |
| 122 instanceKlassHandle ik (THREAD, k); | |
| 123 if (ik->should_be_initialized()) { | |
| 124 ik->initialize(CHECK_NULL); | |
| 125 } | |
| 126 return ik(); | |
| 127 } | |
| 128 | |
| 129 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
| 130 // if the performance counter is not initialized, | |
| 131 // then vm initialization failed; simply return. | |
| 132 if (_begin_vm_creation_time == NULL) return; | |
| 133 | |
| 134 _begin_vm_creation_time->set_value(begin); | |
| 135 _end_vm_creation_time->set_value(begin + duration); | |
| 136 PerfMemory::set_accessible(true); | |
| 137 } | |
| 138 | |
| 139 jlong Management::timestamp() { | |
| 140 TimeStamp t; | |
| 141 t.update(); | |
| 142 return t.ticks() - _stamp.ticks(); | |
| 143 } | |
| 144 | |
| 145 void Management::oops_do(OopClosure* f) { | |
| 146 MemoryService::oops_do(f); | |
| 147 ThreadService::oops_do(f); | |
| 148 | |
| 149 f->do_oop((oop*) &_sensor_klass); | |
| 150 f->do_oop((oop*) &_threadInfo_klass); | |
| 151 f->do_oop((oop*) &_memoryUsage_klass); | |
| 152 f->do_oop((oop*) &_memoryPoolMXBean_klass); | |
| 153 f->do_oop((oop*) &_memoryManagerMXBean_klass); | |
| 154 f->do_oop((oop*) &_garbageCollectorMXBean_klass); | |
| 155 f->do_oop((oop*) &_managementFactory_klass); | |
| 156 } | |
| 157 | |
| 158 klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { | |
| 159 if (_threadInfo_klass == NULL) { | |
| 160 _threadInfo_klass = load_and_initialize_klass(vmSymbolHandles::java_lang_management_ThreadInfo(), CHECK_NULL); | |
| 161 } | |
| 162 return _threadInfo_klass; | |
| 163 } | |
| 164 | |
| 165 klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { | |
| 166 if (_memoryUsage_klass == NULL) { | |
| 167 _memoryUsage_klass = load_and_initialize_klass(vmSymbolHandles::java_lang_management_MemoryUsage(), CHECK_NULL); | |
| 168 } | |
| 169 return _memoryUsage_klass; | |
| 170 } | |
| 171 | |
| 172 klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { | |
| 173 if (_memoryPoolMXBean_klass == NULL) { | |
| 174 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbolHandles::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); | |
| 175 } | |
| 176 return _memoryPoolMXBean_klass; | |
| 177 } | |
| 178 | |
| 179 klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { | |
| 180 if (_memoryManagerMXBean_klass == NULL) { | |
| 181 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbolHandles::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); | |
| 182 } | |
| 183 return _memoryManagerMXBean_klass; | |
| 184 } | |
| 185 | |
| 186 klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { | |
| 187 if (_garbageCollectorMXBean_klass == NULL) { | |
| 188 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbolHandles::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); | |
| 189 } | |
| 190 return _garbageCollectorMXBean_klass; | |
| 191 } | |
| 192 | |
| 193 klassOop Management::sun_management_Sensor_klass(TRAPS) { | |
| 194 if (_sensor_klass == NULL) { | |
| 195 _sensor_klass = load_and_initialize_klass(vmSymbolHandles::sun_management_Sensor(), CHECK_NULL); | |
| 196 } | |
| 197 return _sensor_klass; | |
| 198 } | |
| 199 | |
| 200 klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { | |
| 201 if (_managementFactory_klass == NULL) { | |
| 202 _managementFactory_klass = load_and_initialize_klass(vmSymbolHandles::sun_management_ManagementFactory(), CHECK_NULL); | |
| 203 } | |
| 204 return _managementFactory_klass; | |
| 205 } | |
| 206 | |
| 207 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { | |
| 208 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
| 209 | |
| 210 jlong contended_time; | |
| 211 jlong waited_time; | |
| 212 if (ThreadService::is_thread_monitoring_contention()) { | |
| 213 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
| 214 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
| 215 } else { | |
| 216 // set them to -1 if thread contention monitoring is disabled. | |
| 217 contended_time = max_julong; | |
| 218 waited_time = max_julong; | |
| 219 } | |
| 220 | |
| 221 int thread_status = snapshot->thread_status(); | |
| 222 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
| 223 if (snapshot->is_ext_suspended()) { | |
| 224 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
| 225 } | |
| 226 if (snapshot->is_in_native()) { | |
| 227 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
| 228 } | |
| 229 | |
| 230 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
| 231 Handle stacktrace_h; | |
| 232 if (st != NULL) { | |
| 233 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
| 234 } else { | |
| 235 stacktrace_h = Handle(); | |
| 236 } | |
| 237 | |
| 238 args->push_oop(snapshot_thread); | |
| 239 args->push_int(thread_status); | |
| 240 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
| 241 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
| 242 args->push_long(snapshot->contended_enter_count()); | |
| 243 args->push_long(contended_time); | |
| 244 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
| 245 args->push_long(waited_time); | |
| 246 args->push_oop(stacktrace_h); | |
| 247 } | |
| 248 | |
| 249 // Helper function to construct a ThreadInfo object | |
| 250 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
| 251 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
| 252 instanceKlassHandle ik (THREAD, k); | |
| 253 | |
| 254 JavaValue result(T_VOID); | |
| 255 JavaCallArguments args(14); | |
| 256 | |
| 257 // First allocate a ThreadObj object and | |
| 258 // push the receiver as the first argument | |
| 259 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
| 260 args.push_oop(element); | |
| 261 | |
| 262 // initialize the arguments for the ThreadInfo constructor | |
| 263 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
| 264 | |
| 265 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
| 266 JavaCalls::call_special(&result, | |
| 267 ik, | |
| 268 vmSymbolHandles::object_initializer_name(), | |
| 269 vmSymbolHandles::java_lang_management_ThreadInfo_constructor_signature(), | |
| 270 &args, | |
| 271 CHECK_NULL); | |
| 272 | |
| 273 return (instanceOop) element(); | |
| 274 } | |
| 275 | |
| 276 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
| 277 objArrayHandle monitors_array, | |
| 278 typeArrayHandle depths_array, | |
| 279 objArrayHandle synchronizers_array, | |
| 280 TRAPS) { | |
| 281 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
| 282 instanceKlassHandle ik (THREAD, k); | |
| 283 | |
| 284 JavaValue result(T_VOID); | |
| 285 JavaCallArguments args(17); | |
| 286 | |
| 287 // First allocate a ThreadObj object and | |
| 288 // push the receiver as the first argument | |
| 289 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
| 290 args.push_oop(element); | |
| 291 | |
| 292 // initialize the arguments for the ThreadInfo constructor | |
| 293 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
| 294 | |
| 295 // push the locked monitors and synchronizers in the arguments | |
| 296 args.push_oop(monitors_array); | |
| 297 args.push_oop(depths_array); | |
| 298 args.push_oop(synchronizers_array); | |
| 299 | |
| 300 // Call ThreadInfo constructor with locked monitors and synchronizers | |
| 301 JavaCalls::call_special(&result, | |
| 302 ik, | |
| 303 vmSymbolHandles::object_initializer_name(), | |
| 304 vmSymbolHandles::java_lang_management_ThreadInfo_with_locks_constructor_signature(), | |
| 305 &args, | |
| 306 CHECK_NULL); | |
| 307 | |
| 308 return (instanceOop) element(); | |
| 309 } | |
| 310 | |
| 311 // Helper functions | |
| 312 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
| 313 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
| 314 | |
| 315 JavaThread* java_thread = NULL; | |
| 316 // Sequential search for now. Need to do better optimization later. | |
| 317 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
| 318 oop tobj = thread->threadObj(); | |
| 319 if (!thread->is_exiting() && | |
| 320 tobj != NULL && | |
| 321 thread_id == java_lang_Thread::thread_id(tobj)) { | |
| 322 java_thread = thread; | |
| 323 break; | |
| 324 } | |
| 325 } | |
| 326 return java_thread; | |
| 327 } | |
| 328 | |
| 329 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
| 330 if (mgr == NULL) { | |
| 331 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 332 } | |
| 333 oop mgr_obj = JNIHandles::resolve(mgr); | |
| 334 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
| 335 | |
| 336 klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); | |
| 337 if (!h->is_a(k)) { | |
| 338 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 339 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
| 340 NULL); | |
| 341 } | |
| 342 | |
| 343 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
| 344 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
| 345 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 346 "Invalid GC memory manager", | |
| 347 NULL); | |
| 348 } | |
| 349 return (GCMemoryManager*) gc; | |
| 350 } | |
| 351 | |
| 352 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
| 353 if (obj == NULL) { | |
| 354 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 355 } | |
| 356 | |
| 357 oop pool_obj = JNIHandles::resolve(obj); | |
| 358 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
| 359 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
| 360 | |
| 361 return MemoryService::get_memory_pool(ph); | |
| 362 } | |
| 363 | |
| 364 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
| 365 int num_threads = ids_ah->length(); | |
| 366 // should be non-empty array | |
| 367 if (num_threads == 0) { | |
| 368 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 369 "Empty array of thread IDs"); | |
| 370 } | |
| 371 | |
| 372 // Validate input thread IDs | |
| 373 int i = 0; | |
| 374 for (i = 0; i < num_threads; i++) { | |
| 375 jlong tid = ids_ah->long_at(i); | |
| 376 if (tid <= 0) { | |
| 377 // throw exception if invalid thread id. | |
| 378 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 379 "Invalid thread ID entry"); | |
| 380 } | |
| 381 } | |
| 382 | |
| 383 } | |
| 384 | |
| 385 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
| 386 | |
| 387 // check if the element of infoArray is of type ThreadInfo class | |
| 388 klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); | |
| 389 klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); | |
| 390 if (element_klass != threadinfo_klass) { | |
| 391 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 392 "infoArray element type is not ThreadInfo class"); | |
| 393 } | |
| 394 | |
| 395 } | |
| 396 | |
| 397 | |
| 398 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
| 399 if (obj == NULL) { | |
| 400 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 401 } | |
| 402 | |
| 403 oop mgr_obj = JNIHandles::resolve(obj); | |
| 404 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
| 405 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
| 406 | |
| 407 return MemoryService::get_memory_manager(mh); | |
| 408 } | |
| 409 | |
| 410 // Returns a version string and sets major and minor version if | |
| 411 // the input parameters are non-null. | |
| 412 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
| 413 return JMM_VERSION; | |
| 414 JVM_END | |
| 415 | |
| 416 // Gets the list of VM monitoring and management optional supports | |
| 417 // Returns 0 if succeeded; otherwise returns non-zero. | |
| 418 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
| 419 if (support == NULL) { | |
| 420 return -1; | |
| 421 } | |
| 422 Management::get_optional_support(support); | |
| 423 return 0; | |
| 424 JVM_END | |
| 425 | |
| 426 // Returns a java.lang.String object containing the input arguments to the VM. | |
| 427 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
| 428 ResourceMark rm(THREAD); | |
| 429 | |
| 430 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
| 431 return NULL; | |
| 432 } | |
| 433 | |
| 434 char** vm_flags = Arguments::jvm_flags_array(); | |
| 435 char** vm_args = Arguments::jvm_args_array(); | |
| 436 int num_flags = Arguments::num_jvm_flags(); | |
| 437 int num_args = Arguments::num_jvm_args(); | |
| 438 | |
| 439 size_t length = 1; // null terminator | |
| 440 int i; | |
| 441 for (i = 0; i < num_flags; i++) { | |
| 442 length += strlen(vm_flags[i]); | |
| 443 } | |
| 444 for (i = 0; i < num_args; i++) { | |
| 445 length += strlen(vm_args[i]); | |
| 446 } | |
| 447 // add a space between each argument | |
| 448 length += num_flags + num_args - 1; | |
| 449 | |
| 450 // Return the list of input arguments passed to the VM | |
| 451 // and preserve the order that the VM processes. | |
| 452 char* args = NEW_RESOURCE_ARRAY(char, length); | |
| 453 args[0] = '\0'; | |
| 454 // concatenate all jvm_flags | |
| 455 if (num_flags > 0) { | |
| 456 strcat(args, vm_flags[0]); | |
| 457 for (i = 1; i < num_flags; i++) { | |
| 458 strcat(args, " "); | |
| 459 strcat(args, vm_flags[i]); | |
| 460 } | |
| 461 } | |
| 462 | |
| 463 if (num_args > 0 && num_flags > 0) { | |
| 464 // append a space if args already contains one or more jvm_flags | |
| 465 strcat(args, " "); | |
| 466 } | |
| 467 | |
| 468 // concatenate all jvm_args | |
| 469 if (num_args > 0) { | |
| 470 strcat(args, vm_args[0]); | |
| 471 for (i = 1; i < num_args; i++) { | |
| 472 strcat(args, " "); | |
| 473 strcat(args, vm_args[i]); | |
| 474 } | |
| 475 } | |
| 476 | |
| 477 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
| 478 return JNIHandles::make_local(env, hargs()); | |
| 479 JVM_END | |
| 480 | |
| 481 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
| 482 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
| 483 ResourceMark rm(THREAD); | |
| 484 | |
| 485 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
| 486 return NULL; | |
| 487 } | |
| 488 | |
| 489 char** vm_flags = Arguments::jvm_flags_array(); | |
| 490 char** vm_args = Arguments::jvm_args_array(); | |
| 491 int num_flags = Arguments::num_jvm_flags(); | |
| 492 int num_args = Arguments::num_jvm_args(); | |
| 493 | |
| 494 instanceKlassHandle ik (THREAD, SystemDictionary::string_klass()); | |
| 495 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); | |
| 496 objArrayHandle result_h(THREAD, r); | |
| 497 | |
| 498 int index = 0; | |
| 499 for (int j = 0; j < num_flags; j++, index++) { | |
| 500 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
| 501 result_h->obj_at_put(index, h()); | |
| 502 } | |
| 503 for (int i = 0; i < num_args; i++, index++) { | |
| 504 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
| 505 result_h->obj_at_put(index, h()); | |
| 506 } | |
| 507 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
| 508 JVM_END | |
| 509 | |
| 510 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
| 511 // one for each memory pool if obj == null; otherwise returns | |
| 512 // an array of memory pools for a given memory manager if | |
| 513 // it is a valid memory manager. | |
| 514 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
| 515 ResourceMark rm(THREAD); | |
| 516 | |
| 517 int num_memory_pools; | |
| 518 MemoryManager* mgr = NULL; | |
| 519 if (obj == NULL) { | |
| 520 num_memory_pools = MemoryService::num_memory_pools(); | |
| 521 } else { | |
| 522 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
| 523 if (mgr == NULL) { | |
| 524 return NULL; | |
| 525 } | |
| 526 num_memory_pools = mgr->num_memory_pools(); | |
| 527 } | |
| 528 | |
| 529 // Allocate the resulting MemoryPoolMXBean[] object | |
| 530 klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); | |
| 531 instanceKlassHandle ik (THREAD, k); | |
| 532 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
| 533 objArrayHandle poolArray(THREAD, r); | |
| 534 | |
| 535 if (mgr == NULL) { | |
| 536 // Get all memory pools | |
| 537 for (int i = 0; i < num_memory_pools; i++) { | |
| 538 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
| 539 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
| 540 instanceHandle ph(THREAD, p); | |
| 541 poolArray->obj_at_put(i, ph()); | |
| 542 } | |
| 543 } else { | |
| 544 // Get memory pools managed by a given memory manager | |
| 545 for (int i = 0; i < num_memory_pools; i++) { | |
| 546 MemoryPool* pool = mgr->get_memory_pool(i); | |
| 547 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
| 548 instanceHandle ph(THREAD, p); | |
| 549 poolArray->obj_at_put(i, ph()); | |
| 550 } | |
| 551 } | |
| 552 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
| 553 JVM_END | |
| 554 | |
| 555 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
| 556 // one for each memory manager if obj == null; otherwise returns | |
| 557 // an array of memory managers for a given memory pool if | |
| 558 // it is a valid memory pool. | |
| 559 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
| 560 ResourceMark rm(THREAD); | |
| 561 | |
| 562 int num_mgrs; | |
| 563 MemoryPool* pool = NULL; | |
| 564 if (obj == NULL) { | |
| 565 num_mgrs = MemoryService::num_memory_managers(); | |
| 566 } else { | |
| 567 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 568 if (pool == NULL) { | |
| 569 return NULL; | |
| 570 } | |
| 571 num_mgrs = pool->num_memory_managers(); | |
| 572 } | |
| 573 | |
| 574 // Allocate the resulting MemoryManagerMXBean[] object | |
| 575 klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); | |
| 576 instanceKlassHandle ik (THREAD, k); | |
| 577 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
| 578 objArrayHandle mgrArray(THREAD, r); | |
| 579 | |
| 580 if (pool == NULL) { | |
| 581 // Get all memory managers | |
| 582 for (int i = 0; i < num_mgrs; i++) { | |
| 583 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
| 584 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
| 585 instanceHandle ph(THREAD, p); | |
| 586 mgrArray->obj_at_put(i, ph()); | |
| 587 } | |
| 588 } else { | |
| 589 // Get memory managers for a given memory pool | |
| 590 for (int i = 0; i < num_mgrs; i++) { | |
| 591 MemoryManager* mgr = pool->get_memory_manager(i); | |
| 592 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
| 593 instanceHandle ph(THREAD, p); | |
| 594 mgrArray->obj_at_put(i, ph()); | |
| 595 } | |
| 596 } | |
| 597 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
| 598 JVM_END | |
| 599 | |
| 600 | |
| 601 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
| 602 // of a given memory pool. | |
| 603 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
| 604 ResourceMark rm(THREAD); | |
| 605 | |
| 606 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 607 if (pool != NULL) { | |
| 608 MemoryUsage usage = pool->get_memory_usage(); | |
| 609 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 610 return JNIHandles::make_local(env, h()); | |
| 611 } else { | |
| 612 return NULL; | |
| 613 } | |
| 614 JVM_END | |
| 615 | |
| 616 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
| 617 // of a given memory pool. | |
| 618 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
| 619 ResourceMark rm(THREAD); | |
| 620 | |
| 621 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 622 if (pool != NULL) { | |
| 623 MemoryUsage usage = pool->get_peak_memory_usage(); | |
| 624 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 625 return JNIHandles::make_local(env, h()); | |
| 626 } else { | |
| 627 return NULL; | |
| 628 } | |
| 629 JVM_END | |
| 630 | |
| 631 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
| 632 // of a given memory pool after most recent GC. | |
| 633 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
| 634 ResourceMark rm(THREAD); | |
| 635 | |
| 636 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 637 if (pool != NULL && pool->is_collected_pool()) { | |
| 638 MemoryUsage usage = pool->get_last_collection_usage(); | |
| 639 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 640 return JNIHandles::make_local(env, h()); | |
| 641 } else { | |
| 642 return NULL; | |
| 643 } | |
| 644 JVM_END | |
| 645 | |
| 646 // Sets the memory pool sensor for a threshold type | |
| 647 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
| 648 if (obj == NULL || sensorObj == NULL) { | |
| 649 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 650 } | |
| 651 | |
| 652 klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); | |
| 653 oop s = JNIHandles::resolve(sensorObj); | |
| 654 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
| 655 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
| 656 if (!sensor_h->is_a(sensor_klass)) { | |
| 657 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 658 "Sensor is not an instance of sun.management.Sensor class"); | |
| 659 } | |
| 660 | |
| 661 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
| 662 assert(mpool != NULL, "MemoryPool should exist"); | |
| 663 | |
| 664 switch (type) { | |
| 665 case JMM_USAGE_THRESHOLD_HIGH: | |
| 666 case JMM_USAGE_THRESHOLD_LOW: | |
| 667 // have only one sensor for threshold high and low | |
| 668 mpool->set_usage_sensor_obj(sensor_h); | |
| 669 break; | |
| 670 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
| 671 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
| 672 // have only one sensor for threshold high and low | |
| 673 mpool->set_gc_usage_sensor_obj(sensor_h); | |
| 674 break; | |
| 675 default: | |
| 676 assert(false, "Unrecognized type"); | |
| 677 } | |
| 678 | |
| 679 JVM_END | |
| 680 | |
| 681 | |
| 682 // Sets the threshold of a given memory pool. | |
| 683 // Returns the previous threshold. | |
| 684 // | |
| 685 // Input parameters: | |
| 686 // pool - the MemoryPoolMXBean object | |
| 687 // type - threshold type | |
| 688 // threshold - the new threshold (must not be negative) | |
| 689 // | |
| 690 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
| 691 if (threshold < 0) { | |
| 692 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 693 "Invalid threshold value", | |
| 694 -1); | |
| 695 } | |
| 696 | |
|
489
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697 if ((size_t)threshold > max_uintx) { |
|
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698 stringStream st; |
|
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
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|
699 st.print("Invalid valid threshold value. Threshold value (" UINT64_FORMAT ") > max value of size_t (" SIZE_FORMAT ")", (size_t)threshold, max_uintx); |
|
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6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
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|
700 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
| 0 | 701 } |
| 702 | |
| 703 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
| 704 assert(pool != NULL, "MemoryPool should exist"); | |
| 705 | |
| 706 jlong prev = 0; | |
| 707 switch (type) { | |
| 708 case JMM_USAGE_THRESHOLD_HIGH: | |
| 709 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
| 710 return -1; | |
| 711 } | |
| 712 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
| 713 break; | |
| 714 | |
| 715 case JMM_USAGE_THRESHOLD_LOW: | |
| 716 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
| 717 return -1; | |
| 718 } | |
| 719 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
| 720 break; | |
| 721 | |
| 722 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
| 723 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
| 724 return -1; | |
| 725 } | |
| 726 // return and the new threshold is effective for the next GC | |
| 727 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
| 728 | |
| 729 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
| 730 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
| 731 return -1; | |
| 732 } | |
| 733 // return and the new threshold is effective for the next GC | |
| 734 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
| 735 | |
| 736 default: | |
| 737 assert(false, "Unrecognized type"); | |
| 738 return -1; | |
| 739 } | |
| 740 | |
| 741 // When the threshold is changed, reevaluate if the low memory | |
| 742 // detection is enabled. | |
| 743 if (prev != threshold) { | |
| 744 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
| 745 LowMemoryDetector::detect_low_memory(pool); | |
| 746 } | |
| 747 return prev; | |
| 748 JVM_END | |
| 749 | |
| 750 // Returns a java/lang/management/MemoryUsage object representing | |
| 751 // the memory usage for the heap or non-heap memory. | |
| 752 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
| 753 ResourceMark rm(THREAD); | |
| 754 | |
| 755 // Calculate the memory usage | |
| 756 size_t total_init = 0; | |
| 757 size_t total_used = 0; | |
| 758 size_t total_committed = 0; | |
| 759 size_t total_max = 0; | |
| 760 bool has_undefined_init_size = false; | |
| 761 bool has_undefined_max_size = false; | |
| 762 | |
| 763 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
| 764 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
| 765 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
| 766 MemoryUsage u = pool->get_memory_usage(); | |
| 767 total_used += u.used(); | |
| 768 total_committed += u.committed(); | |
| 769 | |
| 770 // if any one of the memory pool has undefined init_size or max_size, | |
| 771 // set it to -1 | |
| 772 if (u.init_size() == (size_t)-1) { | |
| 773 has_undefined_init_size = true; | |
| 774 } | |
| 775 if (!has_undefined_init_size) { | |
| 776 total_init += u.init_size(); | |
| 777 } | |
| 778 | |
| 779 if (u.max_size() == (size_t)-1) { | |
| 780 has_undefined_max_size = true; | |
| 781 } | |
| 782 if (!has_undefined_max_size) { | |
| 783 total_max += u.max_size(); | |
| 784 } | |
| 785 } | |
| 786 } | |
| 787 | |
| 788 // In our current implementation, all pools should have | |
| 789 // defined init and max size | |
| 790 assert(!has_undefined_init_size, "Undefined init size"); | |
| 791 assert(!has_undefined_max_size, "Undefined max size"); | |
| 792 | |
| 1064 | 793 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
| 0 | 794 total_used, |
| 795 total_committed, | |
| 796 (heap ? Universe::heap()->max_capacity() : total_max)); | |
| 797 | |
| 798 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 799 return JNIHandles::make_local(env, obj()); | |
| 800 JVM_END | |
| 801 | |
| 802 // Returns the boolean value of a given attribute. | |
| 803 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
| 804 switch (att) { | |
| 805 case JMM_VERBOSE_GC: | |
| 806 return MemoryService::get_verbose(); | |
| 807 case JMM_VERBOSE_CLASS: | |
| 808 return ClassLoadingService::get_verbose(); | |
| 809 case JMM_THREAD_CONTENTION_MONITORING: | |
| 810 return ThreadService::is_thread_monitoring_contention(); | |
| 811 case JMM_THREAD_CPU_TIME: | |
| 812 return ThreadService::is_thread_cpu_time_enabled(); | |
| 813 default: | |
| 814 assert(0, "Unrecognized attribute"); | |
| 815 return false; | |
| 816 } | |
| 817 JVM_END | |
| 818 | |
| 819 // Sets the given boolean attribute and returns the previous value. | |
| 820 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
| 821 switch (att) { | |
| 822 case JMM_VERBOSE_GC: | |
| 823 return MemoryService::set_verbose(flag != 0); | |
| 824 case JMM_VERBOSE_CLASS: | |
| 825 return ClassLoadingService::set_verbose(flag != 0); | |
| 826 case JMM_THREAD_CONTENTION_MONITORING: | |
| 827 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
| 828 case JMM_THREAD_CPU_TIME: | |
| 829 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
| 830 default: | |
| 831 assert(0, "Unrecognized attribute"); | |
| 832 return false; | |
| 833 } | |
| 834 JVM_END | |
| 835 | |
| 836 | |
| 837 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
| 838 switch (att) { | |
| 839 case JMM_GC_TIME_MS: | |
| 840 return mgr->gc_time_ms(); | |
| 841 | |
| 842 case JMM_GC_COUNT: | |
| 843 return mgr->gc_count(); | |
| 844 | |
| 845 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
| 846 // current implementation only has 1 ext attribute | |
| 847 return 1; | |
| 848 | |
| 849 default: | |
| 850 assert(0, "Unrecognized GC attribute"); | |
| 851 return -1; | |
| 852 } | |
| 853 } | |
| 854 | |
| 855 class VmThreadCountClosure: public ThreadClosure { | |
| 856 private: | |
| 857 int _count; | |
| 858 public: | |
| 859 VmThreadCountClosure() : _count(0) {}; | |
| 860 void do_thread(Thread* thread); | |
| 861 int count() { return _count; } | |
| 862 }; | |
| 863 | |
| 864 void VmThreadCountClosure::do_thread(Thread* thread) { | |
| 865 // exclude externally visible JavaThreads | |
| 866 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
| 867 return; | |
| 868 } | |
| 869 | |
| 870 _count++; | |
| 871 } | |
| 872 | |
| 873 static jint get_vm_thread_count() { | |
| 874 VmThreadCountClosure vmtcc; | |
| 875 { | |
| 876 MutexLockerEx ml(Threads_lock); | |
| 877 Threads::threads_do(&vmtcc); | |
| 878 } | |
| 879 | |
| 880 return vmtcc.count(); | |
| 881 } | |
| 882 | |
| 883 static jint get_num_flags() { | |
| 884 // last flag entry is always NULL, so subtract 1 | |
| 885 int nFlags = (int) Flag::numFlags - 1; | |
| 886 int count = 0; | |
| 887 for (int i = 0; i < nFlags; i++) { | |
| 888 Flag* flag = &Flag::flags[i]; | |
| 350 | 889 // Exclude the locked (diagnostic, experimental) flags |
| 0 | 890 if (flag->is_unlocked() || flag->is_unlocker()) { |
| 891 count++; | |
| 892 } | |
| 893 } | |
| 894 return count; | |
| 895 } | |
| 896 | |
| 897 static jlong get_long_attribute(jmmLongAttribute att) { | |
| 898 switch (att) { | |
| 899 case JMM_CLASS_LOADED_COUNT: | |
| 900 return ClassLoadingService::loaded_class_count(); | |
| 901 | |
| 902 case JMM_CLASS_UNLOADED_COUNT: | |
| 903 return ClassLoadingService::unloaded_class_count(); | |
| 904 | |
| 905 case JMM_THREAD_TOTAL_COUNT: | |
| 906 return ThreadService::get_total_thread_count(); | |
| 907 | |
| 908 case JMM_THREAD_LIVE_COUNT: | |
| 909 return ThreadService::get_live_thread_count(); | |
| 910 | |
| 911 case JMM_THREAD_PEAK_COUNT: | |
| 912 return ThreadService::get_peak_thread_count(); | |
| 913 | |
| 914 case JMM_THREAD_DAEMON_COUNT: | |
| 915 return ThreadService::get_daemon_thread_count(); | |
| 916 | |
| 917 case JMM_JVM_INIT_DONE_TIME_MS: | |
| 918 return Management::vm_init_done_time(); | |
| 919 | |
| 920 case JMM_COMPILE_TOTAL_TIME_MS: | |
| 921 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
| 922 | |
| 923 case JMM_OS_PROCESS_ID: | |
| 924 return os::current_process_id(); | |
| 925 | |
| 926 // Hotspot-specific counters | |
| 927 case JMM_CLASS_LOADED_BYTES: | |
| 928 return ClassLoadingService::loaded_class_bytes(); | |
| 929 | |
| 930 case JMM_CLASS_UNLOADED_BYTES: | |
| 931 return ClassLoadingService::unloaded_class_bytes(); | |
| 932 | |
| 933 case JMM_SHARED_CLASS_LOADED_COUNT: | |
| 934 return ClassLoadingService::loaded_shared_class_count(); | |
| 935 | |
| 936 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
| 937 return ClassLoadingService::unloaded_shared_class_count(); | |
| 938 | |
| 939 | |
| 940 case JMM_SHARED_CLASS_LOADED_BYTES: | |
| 941 return ClassLoadingService::loaded_shared_class_bytes(); | |
| 942 | |
| 943 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
| 944 return ClassLoadingService::unloaded_shared_class_bytes(); | |
| 945 | |
| 946 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
| 947 return ClassLoader::classloader_time_ms(); | |
| 948 | |
| 949 case JMM_VM_GLOBAL_COUNT: | |
| 950 return get_num_flags(); | |
| 951 | |
| 952 case JMM_SAFEPOINT_COUNT: | |
| 953 return RuntimeService::safepoint_count(); | |
| 954 | |
| 955 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
| 956 return RuntimeService::safepoint_sync_time_ms(); | |
| 957 | |
| 958 case JMM_TOTAL_STOPPED_TIME_MS: | |
| 959 return RuntimeService::safepoint_time_ms(); | |
| 960 | |
| 961 case JMM_TOTAL_APP_TIME_MS: | |
| 962 return RuntimeService::application_time_ms(); | |
| 963 | |
| 964 case JMM_VM_THREAD_COUNT: | |
| 965 return get_vm_thread_count(); | |
| 966 | |
| 967 case JMM_CLASS_INIT_TOTAL_COUNT: | |
| 968 return ClassLoader::class_init_count(); | |
| 969 | |
| 970 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
| 971 return ClassLoader::class_init_time_ms(); | |
| 972 | |
| 973 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
| 974 return ClassLoader::class_verify_time_ms(); | |
| 975 | |
| 976 case JMM_METHOD_DATA_SIZE_BYTES: | |
| 977 return ClassLoadingService::class_method_data_size(); | |
| 978 | |
| 979 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
| 980 return os::physical_memory(); | |
| 981 | |
| 982 default: | |
| 983 return -1; | |
| 984 } | |
| 985 } | |
| 986 | |
| 987 | |
| 988 // Returns the long value of a given attribute. | |
| 989 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
| 990 if (obj == NULL) { | |
| 991 return get_long_attribute(att); | |
| 992 } else { | |
| 993 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
| 994 if (mgr != NULL) { | |
| 995 return get_gc_attribute(mgr, att); | |
| 996 } | |
| 997 } | |
| 998 return -1; | |
| 999 JVM_END | |
| 1000 | |
| 1001 // Gets the value of all attributes specified in the given array | |
| 1002 // and sets the value in the result array. | |
| 1003 // Returns the number of attributes found. | |
| 1004 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
| 1005 jobject obj, | |
| 1006 jmmLongAttribute* atts, | |
| 1007 jint count, | |
| 1008 jlong* result)) | |
| 1009 | |
| 1010 int num_atts = 0; | |
| 1011 if (obj == NULL) { | |
| 1012 for (int i = 0; i < count; i++) { | |
| 1013 result[i] = get_long_attribute(atts[i]); | |
| 1014 if (result[i] != -1) { | |
| 1015 num_atts++; | |
| 1016 } | |
| 1017 } | |
| 1018 } else { | |
| 1019 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
| 1020 for (int i = 0; i < count; i++) { | |
| 1021 result[i] = get_gc_attribute(mgr, atts[i]); | |
| 1022 if (result[i] != -1) { | |
| 1023 num_atts++; | |
| 1024 } | |
| 1025 } | |
| 1026 } | |
| 1027 return num_atts; | |
| 1028 JVM_END | |
| 1029 | |
| 1030 // Helper function to do thread dump for a specific list of threads | |
| 1031 static void do_thread_dump(ThreadDumpResult* dump_result, | |
| 1032 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
| 1033 int num_threads, | |
| 1034 int max_depth, | |
| 1035 bool with_locked_monitors, | |
| 1036 bool with_locked_synchronizers, | |
| 1037 TRAPS) { | |
| 1038 | |
| 1039 // First get an array of threadObj handles. | |
| 1040 // A JavaThread may terminate before we get the stack trace. | |
| 1041 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 1042 { | |
| 1043 MutexLockerEx ml(Threads_lock); | |
| 1044 for (int i = 0; i < num_threads; i++) { | |
| 1045 jlong tid = ids_ah->long_at(i); | |
| 1046 JavaThread* jt = find_java_thread_from_id(tid); | |
| 1047 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
| 1048 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
| 1049 thread_handle_array->append(threadObj_h); | |
| 1050 } | |
| 1051 } | |
| 1052 | |
| 1053 // Obtain thread dumps and thread snapshot information | |
| 1054 VM_ThreadDump op(dump_result, | |
| 1055 thread_handle_array, | |
| 1056 num_threads, | |
| 1057 max_depth, /* stack depth */ | |
| 1058 with_locked_monitors, | |
| 1059 with_locked_synchronizers); | |
| 1060 VMThread::execute(&op); | |
| 1061 } | |
| 1062 | |
| 1063 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
| 1064 // for the thread ID specified in the corresponding entry in | |
| 1065 // the given array of thread IDs; or NULL if the thread does not exist | |
| 1066 // or has terminated. | |
| 1067 // | |
| 1068 // Input parameters: | |
| 1069 // ids - array of thread IDs | |
| 1070 // maxDepth - the maximum depth of stack traces to be dumped: | |
| 1071 // maxDepth == -1 requests to dump entire stack trace. | |
| 1072 // maxDepth == 0 requests no stack trace. | |
| 1073 // infoArray - array of ThreadInfo objects | |
| 1074 // | |
| 1075 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) | |
| 1076 // Check if threads is null | |
| 1077 if (ids == NULL || infoArray == NULL) { | |
| 1078 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
| 1079 } | |
| 1080 | |
| 1081 if (maxDepth < -1) { | |
| 1082 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1083 "Invalid maxDepth", -1); | |
| 1084 } | |
| 1085 | |
| 1086 ResourceMark rm(THREAD); | |
| 1087 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
| 1088 typeArrayHandle ids_ah(THREAD, ta); | |
| 1089 | |
| 1090 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
| 1091 objArrayOop oa = objArrayOop(infoArray_obj); | |
| 1092 objArrayHandle infoArray_h(THREAD, oa); | |
| 1093 | |
| 1094 // validate the thread id array | |
| 1095 validate_thread_id_array(ids_ah, CHECK_0); | |
| 1096 | |
| 1097 // validate the ThreadInfo[] parameters | |
| 1098 validate_thread_info_array(infoArray_h, CHECK_0); | |
| 1099 | |
| 1100 // infoArray must be of the same length as the given array of thread IDs | |
| 1101 int num_threads = ids_ah->length(); | |
| 1102 if (num_threads != infoArray_h->length()) { | |
| 1103 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1104 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
| 1105 } | |
| 1106 | |
| 1107 if (JDK_Version::is_gte_jdk16x_version()) { | |
| 1108 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
| 1109 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
| 1110 } | |
| 1111 | |
| 1112 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
| 1113 // GC may occur after the thread snapshots are taken but before | |
| 1114 // this function returns. The threadObj and other oops kept | |
| 1115 // in the ThreadSnapshot are marked and adjusted during GC. | |
| 1116 ThreadDumpResult dump_result(num_threads); | |
| 1117 | |
| 1118 if (maxDepth == 0) { | |
| 1119 // no stack trace dumped - do not need to stop the world | |
| 1120 { | |
| 1121 MutexLockerEx ml(Threads_lock); | |
| 1122 for (int i = 0; i < num_threads; i++) { | |
| 1123 jlong tid = ids_ah->long_at(i); | |
| 1124 JavaThread* jt = find_java_thread_from_id(tid); | |
| 1125 ThreadSnapshot* ts; | |
| 1126 if (jt == NULL) { | |
| 1127 // if the thread does not exist or now it is terminated, | |
| 1128 // create dummy snapshot | |
| 1129 ts = new ThreadSnapshot(); | |
| 1130 } else { | |
| 1131 ts = new ThreadSnapshot(jt); | |
| 1132 } | |
| 1133 dump_result.add_thread_snapshot(ts); | |
| 1134 } | |
| 1135 } | |
| 1136 } else { | |
| 1137 // obtain thread dump with the specific list of threads with stack trace | |
| 1138 | |
| 1139 do_thread_dump(&dump_result, | |
| 1140 ids_ah, | |
| 1141 num_threads, | |
| 1142 maxDepth, | |
| 1143 false, /* no locked monitor */ | |
| 1144 false, /* no locked synchronizers */ | |
| 1145 CHECK_0); | |
| 1146 } | |
| 1147 | |
| 1148 int num_snapshots = dump_result.num_snapshots(); | |
| 1149 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
| 1150 int index = 0; | |
| 1151 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
| 1152 // For each thread, create an java/lang/management/ThreadInfo object | |
| 1153 // and fill with the thread information | |
| 1154 | |
| 1155 if (ts->threadObj() == NULL) { | |
| 1156 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
| 1157 infoArray_h->obj_at_put(index, NULL); | |
| 1158 continue; | |
| 1159 } | |
| 1160 | |
| 1161 // Create java.lang.management.ThreadInfo object | |
| 1162 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
| 1163 infoArray_h->obj_at_put(index, info_obj); | |
| 1164 } | |
| 1165 return 0; | |
| 1166 JVM_END | |
| 1167 | |
| 1168 // Dump thread info for the specified threads. | |
| 1169 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
| 1170 // for the thread ID specified in the corresponding entry in | |
| 1171 // the given array of thread IDs; or NULL if the thread does not exist | |
| 1172 // or has terminated. | |
| 1173 // | |
| 1174 // Input parameter: | |
| 1175 // ids - array of thread IDs; NULL indicates all live threads | |
| 1176 // locked_monitors - if true, dump locked object monitors | |
| 1177 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
| 1178 // | |
| 1179 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
| 1180 ResourceMark rm(THREAD); | |
| 1181 | |
| 1182 if (JDK_Version::is_gte_jdk16x_version()) { | |
| 1183 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
| 1184 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
| 1185 } | |
| 1186 | |
| 1187 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
| 1188 int num_threads = (ta != NULL ? ta->length() : 0); | |
| 1189 typeArrayHandle ids_ah(THREAD, ta); | |
| 1190 | |
| 1191 ThreadDumpResult dump_result(num_threads); // can safepoint | |
| 1192 | |
| 1193 if (ids_ah() != NULL) { | |
| 1194 | |
| 1195 // validate the thread id array | |
| 1196 validate_thread_id_array(ids_ah, CHECK_NULL); | |
| 1197 | |
| 1198 // obtain thread dump of a specific list of threads | |
| 1199 do_thread_dump(&dump_result, | |
| 1200 ids_ah, | |
| 1201 num_threads, | |
| 1202 -1, /* entire stack */ | |
| 1203 (locked_monitors ? true : false), /* with locked monitors */ | |
| 1204 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
| 1205 CHECK_NULL); | |
| 1206 } else { | |
| 1207 // obtain thread dump of all threads | |
| 1208 VM_ThreadDump op(&dump_result, | |
| 1209 -1, /* entire stack */ | |
| 1210 (locked_monitors ? true : false), /* with locked monitors */ | |
| 1211 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
| 1212 VMThread::execute(&op); | |
| 1213 } | |
| 1214 | |
| 1215 int num_snapshots = dump_result.num_snapshots(); | |
| 1216 | |
| 1217 // create the result ThreadInfo[] object | |
| 1218 klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); | |
| 1219 instanceKlassHandle ik (THREAD, k); | |
| 1220 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
| 1221 objArrayHandle result_h(THREAD, r); | |
| 1222 | |
| 1223 int index = 0; | |
| 1224 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
| 1225 if (ts->threadObj() == NULL) { | |
| 1226 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
| 1227 result_h->obj_at_put(index, NULL); | |
| 1228 continue; | |
| 1229 } | |
| 1230 | |
| 1231 | |
| 1232 | |
| 1233 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
| 1234 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
| 1235 | |
| 1236 // Create Object[] filled with locked monitors | |
| 1237 // Create int[] filled with the stack depth where a monitor was locked | |
| 1238 int num_frames = stacktrace->get_stack_depth(); | |
| 1239 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
| 1240 | |
| 1241 // Count the total number of locked monitors | |
| 1242 for (int i = 0; i < num_frames; i++) { | |
| 1243 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
| 1244 num_locked_monitors += frame->num_locked_monitors(); | |
| 1245 } | |
| 1246 | |
| 1247 objArrayHandle monitors_array; | |
| 1248 typeArrayHandle depths_array; | |
| 1249 objArrayHandle synchronizers_array; | |
| 1250 | |
| 1251 if (locked_monitors) { | |
| 1252 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
| 1253 // where the thread locked it | |
| 1254 objArrayOop array = oopFactory::new_system_objArray(num_locked_monitors, CHECK_NULL); | |
| 1255 objArrayHandle mh(THREAD, array); | |
| 1256 monitors_array = mh; | |
| 1257 | |
| 1258 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
| 1259 typeArrayHandle dh(THREAD, tarray); | |
| 1260 depths_array = dh; | |
| 1261 | |
| 1262 int count = 0; | |
| 1263 int j = 0; | |
| 1264 for (int depth = 0; depth < num_frames; depth++) { | |
| 1265 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
| 1266 int len = frame->num_locked_monitors(); | |
| 1267 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
| 1268 for (j = 0; j < len; j++) { | |
| 1269 oop monitor = locked_monitors->at(j); | |
| 1270 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
| 1271 monitors_array->obj_at_put(count, monitor); | |
| 1272 depths_array->int_at_put(count, depth); | |
| 1273 count++; | |
| 1274 } | |
| 1275 } | |
| 1276 | |
| 1277 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
| 1278 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
| 1279 oop object = jni_locked_monitors->at(j); | |
| 1280 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
| 1281 monitors_array->obj_at_put(count, object); | |
| 1282 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
| 1283 depths_array->int_at_put(count, -1); | |
| 1284 count++; | |
| 1285 } | |
| 1286 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
| 1287 } | |
| 1288 | |
| 1289 if (locked_synchronizers) { | |
| 1290 // Create Object[] filled with locked JSR-166 synchronizers | |
| 1291 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
| 1292 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
| 1293 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
| 1294 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
| 1295 | |
| 1296 objArrayOop array = oopFactory::new_system_objArray(num_locked_synchronizers, CHECK_NULL); | |
| 1297 objArrayHandle sh(THREAD, array); | |
| 1298 synchronizers_array = sh; | |
| 1299 | |
| 1300 for (int k = 0; k < num_locked_synchronizers; k++) { | |
| 1301 synchronizers_array->obj_at_put(k, locks->at(k)); | |
| 1302 } | |
| 1303 } | |
| 1304 | |
| 1305 // Create java.lang.management.ThreadInfo object | |
| 1306 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
| 1307 monitors_array, | |
| 1308 depths_array, | |
| 1309 synchronizers_array, | |
| 1310 CHECK_NULL); | |
| 1311 result_h->obj_at_put(index, info_obj); | |
| 1312 } | |
| 1313 | |
| 1314 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
| 1315 JVM_END | |
| 1316 | |
| 1317 // Returns an array of Class objects. | |
| 1318 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
| 1319 ResourceMark rm(THREAD); | |
| 1320 | |
| 1321 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
| 1322 | |
| 1323 int num_classes = lce.num_loaded_classes(); | |
| 1324 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), num_classes, CHECK_0); | |
| 1325 objArrayHandle classes_ah(THREAD, r); | |
| 1326 | |
| 1327 for (int i = 0; i < num_classes; i++) { | |
| 1328 KlassHandle kh = lce.get_klass(i); | |
| 1329 oop mirror = Klass::cast(kh())->java_mirror(); | |
| 1330 classes_ah->obj_at_put(i, mirror); | |
| 1331 } | |
| 1332 | |
| 1333 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
| 1334 JVM_END | |
| 1335 | |
| 1336 // Reset statistic. Return true if the requested statistic is reset. | |
| 1337 // Otherwise, return false. | |
| 1338 // | |
| 1339 // Input parameters: | |
| 1340 // obj - specify which instance the statistic associated with to be reset | |
| 1341 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
| 1342 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
| 1343 // type - the type of statistic to be reset | |
| 1344 // | |
| 1345 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
| 1346 ResourceMark rm(THREAD); | |
| 1347 | |
| 1348 switch (type) { | |
| 1349 case JMM_STAT_PEAK_THREAD_COUNT: | |
| 1350 ThreadService::reset_peak_thread_count(); | |
| 1351 return true; | |
| 1352 | |
| 1353 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
| 1354 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
| 1355 jlong tid = obj.j; | |
| 1356 if (tid < 0) { | |
| 1357 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
| 1358 } | |
| 1359 | |
| 1360 // Look for the JavaThread of this given tid | |
| 1361 MutexLockerEx ml(Threads_lock); | |
| 1362 if (tid == 0) { | |
| 1363 // reset contention statistics for all threads if tid == 0 | |
| 1364 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
| 1365 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
| 1366 ThreadService::reset_contention_count_stat(java_thread); | |
| 1367 } else { | |
| 1368 ThreadService::reset_contention_time_stat(java_thread); | |
| 1369 } | |
| 1370 } | |
| 1371 } else { | |
| 1372 // reset contention statistics for a given thread | |
| 1373 JavaThread* java_thread = find_java_thread_from_id(tid); | |
| 1374 if (java_thread == NULL) { | |
| 1375 return false; | |
| 1376 } | |
| 1377 | |
| 1378 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
| 1379 ThreadService::reset_contention_count_stat(java_thread); | |
| 1380 } else { | |
| 1381 ThreadService::reset_contention_time_stat(java_thread); | |
| 1382 } | |
| 1383 } | |
| 1384 return true; | |
| 1385 break; | |
| 1386 } | |
| 1387 case JMM_STAT_PEAK_POOL_USAGE: { | |
| 1388 jobject o = obj.l; | |
| 1389 if (o == NULL) { | |
| 1390 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 1391 } | |
| 1392 | |
| 1393 oop pool_obj = JNIHandles::resolve(o); | |
| 1394 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
| 1395 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
| 1396 | |
| 1397 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
| 1398 if (pool != NULL) { | |
| 1399 pool->reset_peak_memory_usage(); | |
| 1400 return true; | |
| 1401 } | |
| 1402 break; | |
| 1403 } | |
| 1404 case JMM_STAT_GC_STAT: { | |
| 1405 jobject o = obj.l; | |
| 1406 if (o == NULL) { | |
| 1407 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 1408 } | |
| 1409 | |
| 1410 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
| 1411 if (mgr != NULL) { | |
| 1412 mgr->reset_gc_stat(); | |
| 1413 return true; | |
| 1414 } | |
| 1415 break; | |
| 1416 } | |
| 1417 default: | |
| 1418 assert(0, "Unknown Statistic Type"); | |
| 1419 } | |
| 1420 return false; | |
| 1421 JVM_END | |
| 1422 | |
| 1423 // Returns the fast estimate of CPU time consumed by | |
| 1424 // a given thread (in nanoseconds). | |
| 1425 // If thread_id == 0, return CPU time for the current thread. | |
| 1426 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
| 1427 if (!os::is_thread_cpu_time_supported()) { | |
| 1428 return -1; | |
| 1429 } | |
| 1430 | |
| 1431 if (thread_id < 0) { | |
| 1432 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1433 "Invalid thread ID", -1); | |
| 1434 } | |
| 1435 | |
| 1436 JavaThread* java_thread = NULL; | |
| 1437 if (thread_id == 0) { | |
| 1438 // current thread | |
| 1439 return os::current_thread_cpu_time(); | |
| 1440 } else { | |
| 1441 MutexLockerEx ml(Threads_lock); | |
| 1442 java_thread = find_java_thread_from_id(thread_id); | |
| 1443 if (java_thread != NULL) { | |
| 1444 return os::thread_cpu_time((Thread*) java_thread); | |
| 1445 } | |
| 1446 } | |
| 1447 return -1; | |
| 1448 JVM_END | |
| 1449 | |
| 1450 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
| 1451 // If thread_id == 0, CPU time for the current thread is returned. | |
| 1452 // If user_sys_cpu_time = true, user level and system CPU time of | |
| 1453 // a given thread is returned; otherwise, only user level CPU time | |
| 1454 // is returned. | |
| 1455 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
| 1456 if (!os::is_thread_cpu_time_supported()) { | |
| 1457 return -1; | |
| 1458 } | |
| 1459 | |
| 1460 if (thread_id < 0) { | |
| 1461 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1462 "Invalid thread ID", -1); | |
| 1463 } | |
| 1464 | |
| 1465 JavaThread* java_thread = NULL; | |
| 1466 if (thread_id == 0) { | |
| 1467 // current thread | |
| 1468 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
| 1469 } else { | |
| 1470 MutexLockerEx ml(Threads_lock); | |
| 1471 java_thread = find_java_thread_from_id(thread_id); | |
| 1472 if (java_thread != NULL) { | |
| 1473 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
| 1474 } | |
| 1475 } | |
| 1476 return -1; | |
| 1477 JVM_END | |
| 1478 | |
| 1479 // Returns a String array of all VM global flag names | |
| 1480 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
| 1481 // last flag entry is always NULL, so subtract 1 | |
| 1482 int nFlags = (int) Flag::numFlags - 1; | |
| 1483 // allocate a temp array | |
| 1484 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
| 1485 nFlags, CHECK_0); | |
| 1486 objArrayHandle flags_ah(THREAD, r); | |
| 1487 int num_entries = 0; | |
| 1488 for (int i = 0; i < nFlags; i++) { | |
| 1489 Flag* flag = &Flag::flags[i]; | |
| 350 | 1490 // Exclude the locked (experimental, diagnostic) flags |
| 0 | 1491 if (flag->is_unlocked() || flag->is_unlocker()) { |
| 1492 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
| 1493 flags_ah->obj_at_put(num_entries, s()); | |
| 1494 num_entries++; | |
| 1495 } | |
| 1496 } | |
| 1497 | |
| 1498 if (num_entries < nFlags) { | |
| 1499 // Return array of right length | |
| 1500 objArrayOop res = oopFactory::new_objArray(SystemDictionary::string_klass(), num_entries, CHECK_0); | |
| 1501 for(int i = 0; i < num_entries; i++) { | |
| 1502 res->obj_at_put(i, flags_ah->obj_at(i)); | |
| 1503 } | |
| 1504 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1505 } | |
| 1506 | |
| 1507 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
| 1508 JVM_END | |
| 1509 | |
| 1510 // utility function used by jmm_GetVMGlobals | |
| 1511 void add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { | |
| 1512 Handle flag_name; | |
| 1513 if (name() == NULL) { | |
| 1514 flag_name = java_lang_String::create_from_str(flag->name, CHECK); | |
| 1515 } else { | |
| 1516 flag_name = name; | |
| 1517 } | |
| 1518 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
| 1519 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; | |
| 1520 | |
| 1521 if (flag->is_bool()) { | |
| 1522 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
| 1523 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
| 1524 } else if (flag->is_intx()) { | |
| 1525 global->value.j = (jlong)flag->get_intx(); | |
| 1526 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
| 1527 } else if (flag->is_uintx()) { | |
| 1528 global->value.j = (jlong)flag->get_uintx(); | |
| 1529 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
| 1530 } else if (flag->is_ccstr()) { | |
| 1531 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK); | |
| 1532 global->value.l = (jobject)JNIHandles::make_local(env, str()); | |
| 1533 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
| 1534 } | |
| 1535 | |
| 1536 global->writeable = flag->is_writeable(); | |
| 1537 global->external = flag->is_external(); | |
| 1538 switch (flag->origin) { | |
| 1539 case DEFAULT: | |
| 1540 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
| 1541 break; | |
| 1542 case COMMAND_LINE: | |
| 1543 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
| 1544 break; | |
| 1545 case ENVIRON_VAR: | |
| 1546 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
| 1547 break; | |
| 1548 case CONFIG_FILE: | |
| 1549 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
| 1550 break; | |
| 1551 case MANAGEMENT: | |
| 1552 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
| 1553 break; | |
| 1554 case ERGONOMIC: | |
| 1555 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
| 1556 break; | |
| 1557 default: | |
| 1558 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
| 1559 } | |
| 1560 } | |
| 1561 | |
| 1562 // Fill globals array of count length with jmmVMGlobal entries | |
| 1563 // specified by names. If names == NULL, fill globals array | |
| 1564 // with all Flags. Return value is number of entries | |
| 1565 // created in globals. | |
| 1566 // If a Flag with a given name in an array element does not | |
| 1567 // exist, globals[i].name will be set to NULL. | |
| 1568 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
| 1569 jobjectArray names, | |
| 1570 jmmVMGlobal *globals, | |
| 1571 jint count)) | |
| 1572 | |
| 1573 | |
| 1574 if (globals == NULL) { | |
| 1575 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1576 } | |
| 1577 | |
| 1578 ResourceMark rm(THREAD); | |
| 1579 | |
| 1580 if (names != NULL) { | |
| 1581 // return the requested globals | |
| 1582 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
| 1583 objArrayHandle names_ah(THREAD, ta); | |
| 1584 // Make sure we have a String array | |
| 1585 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
| 1586 if (element_klass != SystemDictionary::string_klass()) { | |
| 1587 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1588 "Array element type is not String class", 0); | |
| 1589 } | |
| 1590 | |
| 1591 int names_length = names_ah->length(); | |
| 1592 int num_entries = 0; | |
| 1593 for (int i = 0; i < names_length && i < count; i++) { | |
| 1594 oop s = names_ah->obj_at(i); | |
| 1595 if (s == NULL) { | |
| 1596 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1597 } | |
| 1598 | |
| 1599 Handle sh(THREAD, s); | |
| 1600 char* str = java_lang_String::as_utf8_string(s); | |
| 1601 Flag* flag = Flag::find_flag(str, strlen(str)); | |
| 1602 if (flag != NULL) { | |
| 1603 add_global_entry(env, sh, &globals[i], flag, THREAD); | |
| 1604 num_entries++; | |
| 1605 } else { | |
| 1606 globals[i].name = NULL; | |
| 1607 } | |
| 1608 } | |
| 1609 return num_entries; | |
| 1610 } else { | |
| 1611 // return all globals if names == NULL | |
| 1612 | |
| 1613 // last flag entry is always NULL, so subtract 1 | |
| 1614 int nFlags = (int) Flag::numFlags - 1; | |
| 1615 Handle null_h; | |
| 1616 int num_entries = 0; | |
| 1617 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
| 1618 Flag* flag = &Flag::flags[i]; | |
| 350 | 1619 // Exclude the locked (diagnostic, experimental) flags |
| 0 | 1620 if (flag->is_unlocked() || flag->is_unlocker()) { |
| 1621 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD); | |
| 1622 num_entries++; | |
| 1623 } | |
| 1624 } | |
| 1625 return num_entries; | |
| 1626 } | |
| 1627 JVM_END | |
| 1628 | |
| 1629 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
| 1630 ResourceMark rm(THREAD); | |
| 1631 | |
| 1632 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
| 1633 if (fn == NULL) { | |
| 1634 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
| 1635 "The flag name cannot be null."); | |
| 1636 } | |
| 1637 char* name = java_lang_String::as_utf8_string(fn); | |
| 1638 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 1639 if (flag == NULL) { | |
| 1640 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1641 "Flag does not exist."); | |
| 1642 } | |
| 1643 if (!flag->is_writeable()) { | |
| 1644 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1645 "This flag is not writeable."); | |
| 1646 } | |
| 1647 | |
| 1648 bool succeed; | |
| 1649 if (flag->is_bool()) { | |
| 1650 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
| 1651 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
| 1652 } else if (flag->is_intx()) { | |
| 1653 intx ivalue = new_value.j; | |
| 1654 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); | |
| 1655 } else if (flag->is_uintx()) { | |
| 1656 uintx uvalue = new_value.j; | |
| 1657 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); | |
| 1658 } else if (flag->is_ccstr()) { | |
| 1659 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
| 1660 if (str == NULL) { | |
| 1661 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1662 } | |
| 1663 ccstr svalue = java_lang_String::as_utf8_string(str); | |
| 1664 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
| 1665 } | |
| 1666 assert(succeed, "Setting flag should succeed"); | |
| 1667 JVM_END | |
| 1668 | |
| 1669 class ThreadTimesClosure: public ThreadClosure { | |
| 1670 private: | |
| 1671 objArrayOop _names; | |
| 1672 typeArrayOop _times; | |
| 1673 int _names_len; | |
| 1674 int _times_len; | |
| 1675 int _count; | |
| 1676 | |
| 1677 public: | |
| 1678 ThreadTimesClosure(objArrayOop names, typeArrayOop times); | |
| 1679 virtual void do_thread(Thread* thread); | |
| 1680 int count() { return _count; } | |
| 1681 }; | |
| 1682 | |
| 1683 ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, | |
| 1684 typeArrayOop times) { | |
| 1685 assert(names != NULL, "names was NULL"); | |
| 1686 assert(times != NULL, "times was NULL"); | |
| 1687 _names = names; | |
| 1688 _names_len = names->length(); | |
| 1689 _times = times; | |
| 1690 _times_len = times->length(); | |
| 1691 _count = 0; | |
| 1692 } | |
| 1693 | |
| 1694 void ThreadTimesClosure::do_thread(Thread* thread) { | |
| 1695 Handle s; | |
| 1696 assert(thread != NULL, "thread was NULL"); | |
| 1697 | |
| 1698 // exclude externally visible JavaThreads | |
| 1699 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
| 1700 return; | |
| 1701 } | |
| 1702 | |
| 1703 if (_count >= _names_len || _count >= _times_len) { | |
| 1704 // skip if the result array is not big enough | |
| 1705 return; | |
| 1706 } | |
| 1707 | |
| 1708 EXCEPTION_MARK; | |
| 1709 | |
| 1710 assert(thread->name() != NULL, "All threads should have a name"); | |
| 1711 s = java_lang_String::create_from_str(thread->name(), CHECK); | |
| 1712 _names->obj_at_put(_count, s()); | |
| 1713 | |
| 1714 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? | |
| 1715 os::thread_cpu_time(thread) : -1); | |
| 1716 _count++; | |
| 1717 } | |
| 1718 | |
| 1719 // Fills names with VM internal thread names and times with the corresponding | |
| 1720 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
| 1721 // If the element type of names is not String, an IllegalArgumentException is | |
| 1722 // thrown. | |
| 1723 // If an array is not large enough to hold all the entries, only the entries | |
| 1724 // that fit will be returned. Return value is the number of VM internal | |
| 1725 // threads entries. | |
| 1726 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
| 1727 jobjectArray names, | |
| 1728 jlongArray times)) | |
| 1729 if (names == NULL || times == NULL) { | |
| 1730 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1731 } | |
| 1732 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
| 1733 objArrayHandle names_ah(THREAD, na); | |
| 1734 | |
| 1735 // Make sure we have a String array | |
| 1736 klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); | |
| 1737 if (element_klass != SystemDictionary::string_klass()) { | |
| 1738 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1739 "Array element type is not String class", 0); | |
| 1740 } | |
| 1741 | |
| 1742 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
| 1743 typeArrayHandle times_ah(THREAD, ta); | |
| 1744 | |
| 1745 ThreadTimesClosure ttc(names_ah(), times_ah()); | |
| 1746 { | |
| 1747 MutexLockerEx ml(Threads_lock); | |
| 1748 Threads::threads_do(&ttc); | |
| 1749 } | |
| 1750 | |
| 1751 return ttc.count(); | |
| 1752 JVM_END | |
| 1753 | |
| 1754 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
| 1755 ResourceMark rm(THREAD); | |
| 1756 | |
| 1757 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
| 1758 VMThread::execute(&op); | |
| 1759 | |
| 1760 DeadlockCycle* deadlocks = op.result(); | |
| 1761 if (deadlocks == NULL) { | |
| 1762 // no deadlock found and return | |
| 1763 return Handle(); | |
| 1764 } | |
| 1765 | |
| 1766 int num_threads = 0; | |
| 1767 DeadlockCycle* cycle; | |
| 1768 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
| 1769 num_threads += cycle->num_threads(); | |
| 1770 } | |
| 1771 | |
| 1772 objArrayOop r = oopFactory::new_objArray(SystemDictionary::thread_klass(), num_threads, CHECK_NH); | |
| 1773 objArrayHandle threads_ah(THREAD, r); | |
| 1774 | |
| 1775 int index = 0; | |
| 1776 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
| 1777 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
| 1778 int len = deadlock_threads->length(); | |
| 1779 for (int i = 0; i < len; i++) { | |
| 1780 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
| 1781 index++; | |
| 1782 } | |
| 1783 } | |
| 1784 return threads_ah; | |
| 1785 } | |
| 1786 | |
| 1787 // Finds cycles of threads that are deadlocked involved in object monitors | |
| 1788 // and JSR-166 synchronizers. | |
| 1789 // Returns an array of Thread objects which are in deadlock, if any. | |
| 1790 // Otherwise, returns NULL. | |
| 1791 // | |
| 1792 // Input parameter: | |
| 1793 // object_monitors_only - if true, only check object monitors | |
| 1794 // | |
| 1795 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
| 1796 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
| 1797 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1798 JVM_END | |
| 1799 | |
| 1800 // Finds cycles of threads that are deadlocked on monitor locks | |
| 1801 // Returns an array of Thread objects which are in deadlock, if any. | |
| 1802 // Otherwise, returns NULL. | |
| 1803 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
| 1804 Handle result = find_deadlocks(true, CHECK_0); | |
| 1805 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1806 JVM_END | |
| 1807 | |
| 1808 // Gets the information about GC extension attributes including | |
| 1809 // the name of the attribute, its type, and a short description. | |
| 1810 // | |
| 1811 // Input parameters: | |
| 1812 // mgr - GC memory manager | |
| 1813 // info - caller allocated array of jmmExtAttributeInfo | |
| 1814 // count - number of elements of the info array | |
| 1815 // | |
| 1816 // Returns the number of GC extension attributes filled in the info array; or | |
| 1817 // -1 if info is not big enough | |
| 1818 // | |
| 1819 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
| 1820 // All GC memory managers have 1 attribute (number of GC threads) | |
| 1821 if (count == 0) { | |
| 1822 return 0; | |
| 1823 } | |
| 1824 | |
| 1825 if (info == NULL) { | |
| 1826 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1827 } | |
| 1828 | |
| 1829 info[0].name = "GcThreadCount"; | |
| 1830 info[0].type = 'I'; | |
| 1831 info[0].description = "Number of GC threads"; | |
| 1832 return 1; | |
| 1833 JVM_END | |
| 1834 | |
| 1835 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
| 1836 // of a given length and return the objArrayOop | |
| 1837 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
| 1838 if (array == NULL) { | |
| 1839 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1840 } | |
| 1841 | |
| 1842 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
| 1843 objArrayHandle array_h(THREAD, oa); | |
| 1844 | |
| 1845 // array must be of the given length | |
| 1846 if (length != array_h->length()) { | |
| 1847 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1848 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
| 1849 } | |
| 1850 | |
| 1851 // check if the element of array is of type MemoryUsage class | |
| 1852 klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); | |
| 1853 klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); | |
| 1854 if (element_klass != usage_klass) { | |
| 1855 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1856 "The element type is not MemoryUsage class", 0); | |
| 1857 } | |
| 1858 | |
| 1859 return array_h(); | |
| 1860 } | |
| 1861 | |
| 1862 // Gets the statistics of the last GC of a given GC memory manager. | |
| 1863 // Input parameters: | |
| 1864 // obj - GarbageCollectorMXBean object | |
| 1865 // gc_stat - caller allocated jmmGCStat where: | |
| 1866 // a. before_gc_usage - array of MemoryUsage objects | |
| 1867 // b. after_gc_usage - array of MemoryUsage objects | |
| 1868 // c. gc_ext_attributes_values_size is set to the | |
| 1869 // gc_ext_attribute_values array allocated | |
| 1870 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
| 1871 // | |
| 1872 // On return, | |
| 1873 // gc_index == 0 indicates no GC statistics available | |
| 1874 // | |
| 1875 // before_gc_usage and after_gc_usage - filled with per memory pool | |
| 1876 // before and after GC usage in the same order as the memory pools | |
| 1877 // returned by GetMemoryPools for a given GC memory manager. | |
| 1878 // num_gc_ext_attributes indicates the number of elements in | |
| 1879 // the gc_ext_attribute_values array is filled; or | |
| 1880 // -1 if the gc_ext_attributes_values array is not big enough | |
| 1881 // | |
| 1882 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
| 1883 ResourceMark rm(THREAD); | |
| 1884 | |
| 1885 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
| 1886 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1887 } | |
| 1888 | |
| 1889 // Get the GCMemoryManager | |
| 1890 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
| 1891 if (mgr->last_gc_stat() == NULL) { | |
| 1892 gc_stat->gc_index = 0; | |
| 1893 return; | |
| 1894 } | |
| 1895 | |
| 1896 // Make a copy of the last GC statistics | |
| 1897 // GC may occur while constructing the last GC information | |
| 1898 int num_pools = MemoryService::num_memory_pools(); | |
| 1899 GCStatInfo* stat = new GCStatInfo(num_pools); | |
| 1900 stat->copy_stat(mgr->last_gc_stat()); | |
| 1901 | |
| 1902 gc_stat->gc_index = stat->gc_index(); | |
| 1903 gc_stat->start_time = Management::ticks_to_ms(stat->start_time()); | |
| 1904 gc_stat->end_time = Management::ticks_to_ms(stat->end_time()); | |
| 1905 | |
| 1906 // Current implementation does not have GC extension attributes | |
| 1907 gc_stat->num_gc_ext_attributes = 0; | |
| 1908 | |
| 1909 // Fill the arrays of MemoryUsage objects with before and after GC | |
| 1910 // per pool memory usage | |
| 1911 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
| 1912 num_pools, | |
| 1913 CHECK); | |
| 1914 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
| 1915 | |
| 1916 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
| 1917 num_pools, | |
| 1918 CHECK); | |
| 1919 objArrayHandle usage_after_gc_ah(THREAD, au); | |
| 1920 | |
| 1921 for (int i = 0; i < num_pools; i++) { | |
| 1922 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK); | |
| 1923 Handle after_usage; | |
| 1924 | |
| 1925 MemoryUsage u = stat->after_gc_usage_for_pool(i); | |
| 1926 if (u.max_size() == 0 && u.used() > 0) { | |
| 1927 // If max size == 0, this pool is a survivor space. | |
| 1928 // Set max size = -1 since the pools will be swapped after GC. | |
| 1929 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
| 1930 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
| 1931 } else { | |
| 1932 after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK); | |
| 1933 } | |
| 1934 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
| 1935 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
| 1936 } | |
| 1937 | |
| 1938 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
| 1939 // Current implementation only has 1 attribute (number of GC threads) | |
| 1940 // The type is 'I' | |
| 1941 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
| 1942 } | |
| 1943 JVM_END | |
| 1944 | |
| 1945 // Dump heap - Returns 0 if succeeds. | |
| 1946 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
| 1947 #ifndef SERVICES_KERNEL | |
| 1948 ResourceMark rm(THREAD); | |
| 1949 oop on = JNIHandles::resolve_external_guard(outputfile); | |
| 1950 if (on == NULL) { | |
| 1951 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
| 1952 "Output file name cannot be null.", -1); | |
| 1953 } | |
| 1954 char* name = java_lang_String::as_utf8_string(on); | |
| 1955 if (name == NULL) { | |
| 1956 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
| 1957 "Output file name cannot be null.", -1); | |
| 1958 } | |
| 1959 HeapDumper dumper(live ? true : false); | |
| 1960 if (dumper.dump(name) != 0) { | |
| 1961 const char* errmsg = dumper.error_as_C_string(); | |
| 1962 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
| 1963 } | |
| 1964 return 0; | |
| 1965 #else // SERVICES_KERNEL | |
| 1966 return -1; | |
| 1967 #endif // SERVICES_KERNEL | |
| 1968 JVM_END | |
| 1969 | |
| 1970 jlong Management::ticks_to_ms(jlong ticks) { | |
| 1971 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
| 1972 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
| 1973 * (double)1000.0); | |
| 1974 } | |
| 1975 | |
| 1976 const struct jmmInterface_1_ jmm_interface = { | |
| 1977 NULL, | |
| 1978 NULL, | |
| 1979 jmm_GetVersion, | |
| 1980 jmm_GetOptionalSupport, | |
| 1981 jmm_GetInputArguments, | |
| 1982 jmm_GetThreadInfo, | |
| 1983 jmm_GetInputArgumentArray, | |
| 1984 jmm_GetMemoryPools, | |
| 1985 jmm_GetMemoryManagers, | |
| 1986 jmm_GetMemoryPoolUsage, | |
| 1987 jmm_GetPeakMemoryPoolUsage, | |
| 1988 NULL, | |
| 1989 jmm_GetMemoryUsage, | |
| 1990 jmm_GetLongAttribute, | |
| 1991 jmm_GetBoolAttribute, | |
| 1992 jmm_SetBoolAttribute, | |
| 1993 jmm_GetLongAttributes, | |
| 1994 jmm_FindMonitorDeadlockedThreads, | |
| 1995 jmm_GetThreadCpuTime, | |
| 1996 jmm_GetVMGlobalNames, | |
| 1997 jmm_GetVMGlobals, | |
| 1998 jmm_GetInternalThreadTimes, | |
| 1999 jmm_ResetStatistic, | |
| 2000 jmm_SetPoolSensor, | |
| 2001 jmm_SetPoolThreshold, | |
| 2002 jmm_GetPoolCollectionUsage, | |
| 2003 jmm_GetGCExtAttributeInfo, | |
| 2004 jmm_GetLastGCStat, | |
| 2005 jmm_GetThreadCpuTimeWithKind, | |
| 2006 NULL, | |
| 2007 jmm_DumpHeap0, | |
| 2008 jmm_FindDeadlockedThreads, | |
| 2009 jmm_SetVMGlobal, | |
| 2010 NULL, | |
| 2011 jmm_DumpThreads | |
| 2012 }; | |
| 2013 | |
| 2014 void* Management::get_jmm_interface(int version) { | |
| 2015 if (version == JMM_VERSION_1_0) { | |
| 2016 return (void*) &jmm_interface; | |
| 2017 } | |
| 2018 return NULL; | |
| 2019 } |