Wed, 02 Feb 2011 14:38:01 -0500
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
Summary: Defer posting events from the compiler thread: use service thread
Reviewed-by: coleenp, dholmes, never, dcubed
duke@435 | 1 | /* |
phh@2423 | 2 | * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "classfile/systemDictionary.hpp" |
stefank@2314 | 27 | #include "compiler/compileBroker.hpp" |
stefank@2314 | 28 | #include "memory/iterator.hpp" |
stefank@2314 | 29 | #include "memory/oopFactory.hpp" |
stefank@2314 | 30 | #include "memory/resourceArea.hpp" |
stefank@2314 | 31 | #include "oops/klass.hpp" |
stefank@2314 | 32 | #include "oops/klassOop.hpp" |
stefank@2314 | 33 | #include "oops/objArrayKlass.hpp" |
stefank@2314 | 34 | #include "oops/oop.inline.hpp" |
stefank@2314 | 35 | #include "runtime/arguments.hpp" |
stefank@2314 | 36 | #include "runtime/handles.inline.hpp" |
stefank@2314 | 37 | #include "runtime/interfaceSupport.hpp" |
stefank@2314 | 38 | #include "runtime/javaCalls.hpp" |
stefank@2314 | 39 | #include "runtime/jniHandles.hpp" |
stefank@2314 | 40 | #include "runtime/os.hpp" |
kamg@2511 | 41 | #include "runtime/serviceThread.hpp" |
stefank@2314 | 42 | #include "services/classLoadingService.hpp" |
stefank@2314 | 43 | #include "services/heapDumper.hpp" |
stefank@2314 | 44 | #include "services/lowMemoryDetector.hpp" |
stefank@2314 | 45 | #include "services/management.hpp" |
stefank@2314 | 46 | #include "services/memoryManager.hpp" |
stefank@2314 | 47 | #include "services/memoryPool.hpp" |
stefank@2314 | 48 | #include "services/memoryService.hpp" |
stefank@2314 | 49 | #include "services/runtimeService.hpp" |
stefank@2314 | 50 | #include "services/threadService.hpp" |
duke@435 | 51 | |
duke@435 | 52 | PerfVariable* Management::_begin_vm_creation_time = NULL; |
duke@435 | 53 | PerfVariable* Management::_end_vm_creation_time = NULL; |
duke@435 | 54 | PerfVariable* Management::_vm_init_done_time = NULL; |
duke@435 | 55 | |
duke@435 | 56 | klassOop Management::_sensor_klass = NULL; |
duke@435 | 57 | klassOop Management::_threadInfo_klass = NULL; |
duke@435 | 58 | klassOop Management::_memoryUsage_klass = NULL; |
duke@435 | 59 | klassOop Management::_memoryPoolMXBean_klass = NULL; |
duke@435 | 60 | klassOop Management::_memoryManagerMXBean_klass = NULL; |
duke@435 | 61 | klassOop Management::_garbageCollectorMXBean_klass = NULL; |
duke@435 | 62 | klassOop Management::_managementFactory_klass = NULL; |
duke@435 | 63 | |
duke@435 | 64 | jmmOptionalSupport Management::_optional_support = {0}; |
duke@435 | 65 | TimeStamp Management::_stamp; |
duke@435 | 66 | |
duke@435 | 67 | void management_init() { |
duke@435 | 68 | Management::init(); |
duke@435 | 69 | ThreadService::init(); |
duke@435 | 70 | RuntimeService::init(); |
duke@435 | 71 | ClassLoadingService::init(); |
duke@435 | 72 | } |
duke@435 | 73 | |
duke@435 | 74 | void Management::init() { |
duke@435 | 75 | EXCEPTION_MARK; |
duke@435 | 76 | |
duke@435 | 77 | // These counters are for java.lang.management API support. |
duke@435 | 78 | // They are created even if -XX:-UsePerfData is set and in |
duke@435 | 79 | // that case, they will be allocated on C heap. |
duke@435 | 80 | |
duke@435 | 81 | _begin_vm_creation_time = |
duke@435 | 82 | PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", |
duke@435 | 83 | PerfData::U_None, CHECK); |
duke@435 | 84 | |
duke@435 | 85 | _end_vm_creation_time = |
duke@435 | 86 | PerfDataManager::create_variable(SUN_RT, "createVmEndTime", |
duke@435 | 87 | PerfData::U_None, CHECK); |
duke@435 | 88 | |
duke@435 | 89 | _vm_init_done_time = |
duke@435 | 90 | PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", |
duke@435 | 91 | PerfData::U_None, CHECK); |
duke@435 | 92 | |
duke@435 | 93 | // Initialize optional support |
duke@435 | 94 | _optional_support.isLowMemoryDetectionSupported = 1; |
duke@435 | 95 | _optional_support.isCompilationTimeMonitoringSupported = 1; |
duke@435 | 96 | _optional_support.isThreadContentionMonitoringSupported = 1; |
duke@435 | 97 | |
duke@435 | 98 | if (os::is_thread_cpu_time_supported()) { |
duke@435 | 99 | _optional_support.isCurrentThreadCpuTimeSupported = 1; |
duke@435 | 100 | _optional_support.isOtherThreadCpuTimeSupported = 1; |
duke@435 | 101 | } else { |
duke@435 | 102 | _optional_support.isCurrentThreadCpuTimeSupported = 0; |
duke@435 | 103 | _optional_support.isOtherThreadCpuTimeSupported = 0; |
duke@435 | 104 | } |
phh@2423 | 105 | |
duke@435 | 106 | _optional_support.isBootClassPathSupported = 1; |
duke@435 | 107 | _optional_support.isObjectMonitorUsageSupported = 1; |
duke@435 | 108 | #ifndef SERVICES_KERNEL |
duke@435 | 109 | // This depends on the heap inspector |
duke@435 | 110 | _optional_support.isSynchronizerUsageSupported = 1; |
duke@435 | 111 | #endif // SERVICES_KERNEL |
phh@2423 | 112 | _optional_support.isThreadAllocatedMemorySupported = 1; |
duke@435 | 113 | } |
duke@435 | 114 | |
duke@435 | 115 | void Management::initialize(TRAPS) { |
kamg@2511 | 116 | // Start the service thread |
kamg@2511 | 117 | ServiceThread::initialize(); |
duke@435 | 118 | |
duke@435 | 119 | if (ManagementServer) { |
duke@435 | 120 | ResourceMark rm(THREAD); |
duke@435 | 121 | HandleMark hm(THREAD); |
duke@435 | 122 | |
duke@435 | 123 | // Load and initialize the sun.management.Agent class |
duke@435 | 124 | // invoke startAgent method to start the management server |
duke@435 | 125 | Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); |
coleenp@2497 | 126 | klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
duke@435 | 127 | loader, |
duke@435 | 128 | Handle(), |
duke@435 | 129 | true, |
duke@435 | 130 | CHECK); |
duke@435 | 131 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 132 | |
duke@435 | 133 | JavaValue result(T_VOID); |
duke@435 | 134 | JavaCalls::call_static(&result, |
duke@435 | 135 | ik, |
coleenp@2497 | 136 | vmSymbols::startAgent_name(), |
coleenp@2497 | 137 | vmSymbols::void_method_signature(), |
duke@435 | 138 | CHECK); |
duke@435 | 139 | } |
duke@435 | 140 | } |
duke@435 | 141 | |
duke@435 | 142 | void Management::get_optional_support(jmmOptionalSupport* support) { |
duke@435 | 143 | memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); |
duke@435 | 144 | } |
duke@435 | 145 | |
coleenp@2497 | 146 | klassOop Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
duke@435 | 147 | klassOop k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
duke@435 | 148 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 149 | if (ik->should_be_initialized()) { |
duke@435 | 150 | ik->initialize(CHECK_NULL); |
duke@435 | 151 | } |
duke@435 | 152 | return ik(); |
duke@435 | 153 | } |
duke@435 | 154 | |
duke@435 | 155 | void Management::record_vm_startup_time(jlong begin, jlong duration) { |
duke@435 | 156 | // if the performance counter is not initialized, |
duke@435 | 157 | // then vm initialization failed; simply return. |
duke@435 | 158 | if (_begin_vm_creation_time == NULL) return; |
duke@435 | 159 | |
duke@435 | 160 | _begin_vm_creation_time->set_value(begin); |
duke@435 | 161 | _end_vm_creation_time->set_value(begin + duration); |
duke@435 | 162 | PerfMemory::set_accessible(true); |
duke@435 | 163 | } |
duke@435 | 164 | |
duke@435 | 165 | jlong Management::timestamp() { |
duke@435 | 166 | TimeStamp t; |
duke@435 | 167 | t.update(); |
duke@435 | 168 | return t.ticks() - _stamp.ticks(); |
duke@435 | 169 | } |
duke@435 | 170 | |
duke@435 | 171 | void Management::oops_do(OopClosure* f) { |
duke@435 | 172 | MemoryService::oops_do(f); |
duke@435 | 173 | ThreadService::oops_do(f); |
duke@435 | 174 | |
duke@435 | 175 | f->do_oop((oop*) &_sensor_klass); |
duke@435 | 176 | f->do_oop((oop*) &_threadInfo_klass); |
duke@435 | 177 | f->do_oop((oop*) &_memoryUsage_klass); |
duke@435 | 178 | f->do_oop((oop*) &_memoryPoolMXBean_klass); |
duke@435 | 179 | f->do_oop((oop*) &_memoryManagerMXBean_klass); |
duke@435 | 180 | f->do_oop((oop*) &_garbageCollectorMXBean_klass); |
duke@435 | 181 | f->do_oop((oop*) &_managementFactory_klass); |
duke@435 | 182 | } |
duke@435 | 183 | |
duke@435 | 184 | klassOop Management::java_lang_management_ThreadInfo_klass(TRAPS) { |
duke@435 | 185 | if (_threadInfo_klass == NULL) { |
coleenp@2497 | 186 | _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
duke@435 | 187 | } |
duke@435 | 188 | return _threadInfo_klass; |
duke@435 | 189 | } |
duke@435 | 190 | |
duke@435 | 191 | klassOop Management::java_lang_management_MemoryUsage_klass(TRAPS) { |
duke@435 | 192 | if (_memoryUsage_klass == NULL) { |
coleenp@2497 | 193 | _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
duke@435 | 194 | } |
duke@435 | 195 | return _memoryUsage_klass; |
duke@435 | 196 | } |
duke@435 | 197 | |
duke@435 | 198 | klassOop Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { |
duke@435 | 199 | if (_memoryPoolMXBean_klass == NULL) { |
coleenp@2497 | 200 | _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
duke@435 | 201 | } |
duke@435 | 202 | return _memoryPoolMXBean_klass; |
duke@435 | 203 | } |
duke@435 | 204 | |
duke@435 | 205 | klassOop Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { |
duke@435 | 206 | if (_memoryManagerMXBean_klass == NULL) { |
coleenp@2497 | 207 | _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
duke@435 | 208 | } |
duke@435 | 209 | return _memoryManagerMXBean_klass; |
duke@435 | 210 | } |
duke@435 | 211 | |
duke@435 | 212 | klassOop Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { |
duke@435 | 213 | if (_garbageCollectorMXBean_klass == NULL) { |
coleenp@2497 | 214 | _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
duke@435 | 215 | } |
duke@435 | 216 | return _garbageCollectorMXBean_klass; |
duke@435 | 217 | } |
duke@435 | 218 | |
duke@435 | 219 | klassOop Management::sun_management_Sensor_klass(TRAPS) { |
duke@435 | 220 | if (_sensor_klass == NULL) { |
coleenp@2497 | 221 | _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
duke@435 | 222 | } |
duke@435 | 223 | return _sensor_klass; |
duke@435 | 224 | } |
duke@435 | 225 | |
duke@435 | 226 | klassOop Management::sun_management_ManagementFactory_klass(TRAPS) { |
duke@435 | 227 | if (_managementFactory_klass == NULL) { |
coleenp@2497 | 228 | _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
duke@435 | 229 | } |
duke@435 | 230 | return _managementFactory_klass; |
duke@435 | 231 | } |
duke@435 | 232 | |
duke@435 | 233 | static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
duke@435 | 234 | Handle snapshot_thread(THREAD, snapshot->threadObj()); |
duke@435 | 235 | |
duke@435 | 236 | jlong contended_time; |
duke@435 | 237 | jlong waited_time; |
duke@435 | 238 | if (ThreadService::is_thread_monitoring_contention()) { |
duke@435 | 239 | contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); |
duke@435 | 240 | waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); |
duke@435 | 241 | } else { |
duke@435 | 242 | // set them to -1 if thread contention monitoring is disabled. |
duke@435 | 243 | contended_time = max_julong; |
duke@435 | 244 | waited_time = max_julong; |
duke@435 | 245 | } |
duke@435 | 246 | |
duke@435 | 247 | int thread_status = snapshot->thread_status(); |
duke@435 | 248 | assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); |
duke@435 | 249 | if (snapshot->is_ext_suspended()) { |
duke@435 | 250 | thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; |
duke@435 | 251 | } |
duke@435 | 252 | if (snapshot->is_in_native()) { |
duke@435 | 253 | thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; |
duke@435 | 254 | } |
duke@435 | 255 | |
duke@435 | 256 | ThreadStackTrace* st = snapshot->get_stack_trace(); |
duke@435 | 257 | Handle stacktrace_h; |
duke@435 | 258 | if (st != NULL) { |
duke@435 | 259 | stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); |
duke@435 | 260 | } else { |
duke@435 | 261 | stacktrace_h = Handle(); |
duke@435 | 262 | } |
duke@435 | 263 | |
duke@435 | 264 | args->push_oop(snapshot_thread); |
duke@435 | 265 | args->push_int(thread_status); |
duke@435 | 266 | args->push_oop(Handle(THREAD, snapshot->blocker_object())); |
duke@435 | 267 | args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); |
duke@435 | 268 | args->push_long(snapshot->contended_enter_count()); |
duke@435 | 269 | args->push_long(contended_time); |
duke@435 | 270 | args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); |
duke@435 | 271 | args->push_long(waited_time); |
duke@435 | 272 | args->push_oop(stacktrace_h); |
duke@435 | 273 | } |
duke@435 | 274 | |
duke@435 | 275 | // Helper function to construct a ThreadInfo object |
duke@435 | 276 | instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { |
duke@435 | 277 | klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
duke@435 | 278 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 279 | |
duke@435 | 280 | JavaValue result(T_VOID); |
duke@435 | 281 | JavaCallArguments args(14); |
duke@435 | 282 | |
duke@435 | 283 | // First allocate a ThreadObj object and |
duke@435 | 284 | // push the receiver as the first argument |
duke@435 | 285 | Handle element = ik->allocate_instance_handle(CHECK_NULL); |
duke@435 | 286 | args.push_oop(element); |
duke@435 | 287 | |
duke@435 | 288 | // initialize the arguments for the ThreadInfo constructor |
duke@435 | 289 | initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); |
duke@435 | 290 | |
duke@435 | 291 | // Call ThreadInfo constructor with no locked monitors and synchronizers |
duke@435 | 292 | JavaCalls::call_special(&result, |
duke@435 | 293 | ik, |
coleenp@2497 | 294 | vmSymbols::object_initializer_name(), |
coleenp@2497 | 295 | vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
duke@435 | 296 | &args, |
duke@435 | 297 | CHECK_NULL); |
duke@435 | 298 | |
duke@435 | 299 | return (instanceOop) element(); |
duke@435 | 300 | } |
duke@435 | 301 | |
duke@435 | 302 | instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, |
duke@435 | 303 | objArrayHandle monitors_array, |
duke@435 | 304 | typeArrayHandle depths_array, |
duke@435 | 305 | objArrayHandle synchronizers_array, |
duke@435 | 306 | TRAPS) { |
duke@435 | 307 | klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
duke@435 | 308 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 309 | |
duke@435 | 310 | JavaValue result(T_VOID); |
duke@435 | 311 | JavaCallArguments args(17); |
duke@435 | 312 | |
duke@435 | 313 | // First allocate a ThreadObj object and |
duke@435 | 314 | // push the receiver as the first argument |
duke@435 | 315 | Handle element = ik->allocate_instance_handle(CHECK_NULL); |
duke@435 | 316 | args.push_oop(element); |
duke@435 | 317 | |
duke@435 | 318 | // initialize the arguments for the ThreadInfo constructor |
duke@435 | 319 | initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); |
duke@435 | 320 | |
duke@435 | 321 | // push the locked monitors and synchronizers in the arguments |
duke@435 | 322 | args.push_oop(monitors_array); |
duke@435 | 323 | args.push_oop(depths_array); |
duke@435 | 324 | args.push_oop(synchronizers_array); |
duke@435 | 325 | |
duke@435 | 326 | // Call ThreadInfo constructor with locked monitors and synchronizers |
duke@435 | 327 | JavaCalls::call_special(&result, |
duke@435 | 328 | ik, |
coleenp@2497 | 329 | vmSymbols::object_initializer_name(), |
coleenp@2497 | 330 | vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
duke@435 | 331 | &args, |
duke@435 | 332 | CHECK_NULL); |
duke@435 | 333 | |
duke@435 | 334 | return (instanceOop) element(); |
duke@435 | 335 | } |
duke@435 | 336 | |
duke@435 | 337 | // Helper functions |
duke@435 | 338 | static JavaThread* find_java_thread_from_id(jlong thread_id) { |
duke@435 | 339 | assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); |
duke@435 | 340 | |
duke@435 | 341 | JavaThread* java_thread = NULL; |
duke@435 | 342 | // Sequential search for now. Need to do better optimization later. |
duke@435 | 343 | for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { |
duke@435 | 344 | oop tobj = thread->threadObj(); |
duke@435 | 345 | if (!thread->is_exiting() && |
duke@435 | 346 | tobj != NULL && |
duke@435 | 347 | thread_id == java_lang_Thread::thread_id(tobj)) { |
duke@435 | 348 | java_thread = thread; |
duke@435 | 349 | break; |
duke@435 | 350 | } |
duke@435 | 351 | } |
duke@435 | 352 | return java_thread; |
duke@435 | 353 | } |
duke@435 | 354 | |
duke@435 | 355 | static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { |
duke@435 | 356 | if (mgr == NULL) { |
duke@435 | 357 | THROW_(vmSymbols::java_lang_NullPointerException(), NULL); |
duke@435 | 358 | } |
duke@435 | 359 | oop mgr_obj = JNIHandles::resolve(mgr); |
duke@435 | 360 | instanceHandle h(THREAD, (instanceOop) mgr_obj); |
duke@435 | 361 | |
duke@435 | 362 | klassOop k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); |
duke@435 | 363 | if (!h->is_a(k)) { |
duke@435 | 364 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 365 | "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", |
duke@435 | 366 | NULL); |
duke@435 | 367 | } |
duke@435 | 368 | |
duke@435 | 369 | MemoryManager* gc = MemoryService::get_memory_manager(h); |
duke@435 | 370 | if (gc == NULL || !gc->is_gc_memory_manager()) { |
duke@435 | 371 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 372 | "Invalid GC memory manager", |
duke@435 | 373 | NULL); |
duke@435 | 374 | } |
duke@435 | 375 | return (GCMemoryManager*) gc; |
duke@435 | 376 | } |
duke@435 | 377 | |
duke@435 | 378 | static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { |
duke@435 | 379 | if (obj == NULL) { |
duke@435 | 380 | THROW_(vmSymbols::java_lang_NullPointerException(), NULL); |
duke@435 | 381 | } |
duke@435 | 382 | |
duke@435 | 383 | oop pool_obj = JNIHandles::resolve(obj); |
duke@435 | 384 | assert(pool_obj->is_instance(), "Should be an instanceOop"); |
duke@435 | 385 | instanceHandle ph(THREAD, (instanceOop) pool_obj); |
duke@435 | 386 | |
duke@435 | 387 | return MemoryService::get_memory_pool(ph); |
duke@435 | 388 | } |
duke@435 | 389 | |
duke@435 | 390 | static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { |
duke@435 | 391 | int num_threads = ids_ah->length(); |
duke@435 | 392 | |
duke@435 | 393 | // Validate input thread IDs |
duke@435 | 394 | int i = 0; |
duke@435 | 395 | for (i = 0; i < num_threads; i++) { |
duke@435 | 396 | jlong tid = ids_ah->long_at(i); |
duke@435 | 397 | if (tid <= 0) { |
duke@435 | 398 | // throw exception if invalid thread id. |
duke@435 | 399 | THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 400 | "Invalid thread ID entry"); |
duke@435 | 401 | } |
duke@435 | 402 | } |
duke@435 | 403 | } |
duke@435 | 404 | |
duke@435 | 405 | static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { |
duke@435 | 406 | // check if the element of infoArray is of type ThreadInfo class |
duke@435 | 407 | klassOop threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); |
duke@435 | 408 | klassOop element_klass = objArrayKlass::cast(infoArray_h->klass())->element_klass(); |
duke@435 | 409 | if (element_klass != threadinfo_klass) { |
duke@435 | 410 | THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 411 | "infoArray element type is not ThreadInfo class"); |
duke@435 | 412 | } |
duke@435 | 413 | } |
duke@435 | 414 | |
duke@435 | 415 | |
duke@435 | 416 | static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { |
duke@435 | 417 | if (obj == NULL) { |
duke@435 | 418 | THROW_(vmSymbols::java_lang_NullPointerException(), NULL); |
duke@435 | 419 | } |
duke@435 | 420 | |
duke@435 | 421 | oop mgr_obj = JNIHandles::resolve(obj); |
duke@435 | 422 | assert(mgr_obj->is_instance(), "Should be an instanceOop"); |
duke@435 | 423 | instanceHandle mh(THREAD, (instanceOop) mgr_obj); |
duke@435 | 424 | |
duke@435 | 425 | return MemoryService::get_memory_manager(mh); |
duke@435 | 426 | } |
duke@435 | 427 | |
duke@435 | 428 | // Returns a version string and sets major and minor version if |
duke@435 | 429 | // the input parameters are non-null. |
duke@435 | 430 | JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) |
duke@435 | 431 | return JMM_VERSION; |
duke@435 | 432 | JVM_END |
duke@435 | 433 | |
duke@435 | 434 | // Gets the list of VM monitoring and management optional supports |
duke@435 | 435 | // Returns 0 if succeeded; otherwise returns non-zero. |
duke@435 | 436 | JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) |
duke@435 | 437 | if (support == NULL) { |
duke@435 | 438 | return -1; |
duke@435 | 439 | } |
duke@435 | 440 | Management::get_optional_support(support); |
duke@435 | 441 | return 0; |
duke@435 | 442 | JVM_END |
duke@435 | 443 | |
duke@435 | 444 | // Returns a java.lang.String object containing the input arguments to the VM. |
duke@435 | 445 | JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) |
duke@435 | 446 | ResourceMark rm(THREAD); |
duke@435 | 447 | |
duke@435 | 448 | if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { |
duke@435 | 449 | return NULL; |
duke@435 | 450 | } |
duke@435 | 451 | |
duke@435 | 452 | char** vm_flags = Arguments::jvm_flags_array(); |
duke@435 | 453 | char** vm_args = Arguments::jvm_args_array(); |
duke@435 | 454 | int num_flags = Arguments::num_jvm_flags(); |
duke@435 | 455 | int num_args = Arguments::num_jvm_args(); |
duke@435 | 456 | |
duke@435 | 457 | size_t length = 1; // null terminator |
duke@435 | 458 | int i; |
duke@435 | 459 | for (i = 0; i < num_flags; i++) { |
duke@435 | 460 | length += strlen(vm_flags[i]); |
duke@435 | 461 | } |
duke@435 | 462 | for (i = 0; i < num_args; i++) { |
duke@435 | 463 | length += strlen(vm_args[i]); |
duke@435 | 464 | } |
duke@435 | 465 | // add a space between each argument |
duke@435 | 466 | length += num_flags + num_args - 1; |
duke@435 | 467 | |
duke@435 | 468 | // Return the list of input arguments passed to the VM |
duke@435 | 469 | // and preserve the order that the VM processes. |
duke@435 | 470 | char* args = NEW_RESOURCE_ARRAY(char, length); |
duke@435 | 471 | args[0] = '\0'; |
duke@435 | 472 | // concatenate all jvm_flags |
duke@435 | 473 | if (num_flags > 0) { |
duke@435 | 474 | strcat(args, vm_flags[0]); |
duke@435 | 475 | for (i = 1; i < num_flags; i++) { |
duke@435 | 476 | strcat(args, " "); |
duke@435 | 477 | strcat(args, vm_flags[i]); |
duke@435 | 478 | } |
duke@435 | 479 | } |
duke@435 | 480 | |
duke@435 | 481 | if (num_args > 0 && num_flags > 0) { |
duke@435 | 482 | // append a space if args already contains one or more jvm_flags |
duke@435 | 483 | strcat(args, " "); |
duke@435 | 484 | } |
duke@435 | 485 | |
duke@435 | 486 | // concatenate all jvm_args |
duke@435 | 487 | if (num_args > 0) { |
duke@435 | 488 | strcat(args, vm_args[0]); |
duke@435 | 489 | for (i = 1; i < num_args; i++) { |
duke@435 | 490 | strcat(args, " "); |
duke@435 | 491 | strcat(args, vm_args[i]); |
duke@435 | 492 | } |
duke@435 | 493 | } |
duke@435 | 494 | |
duke@435 | 495 | Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); |
duke@435 | 496 | return JNIHandles::make_local(env, hargs()); |
duke@435 | 497 | JVM_END |
duke@435 | 498 | |
duke@435 | 499 | // Returns an array of java.lang.String object containing the input arguments to the VM. |
duke@435 | 500 | JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) |
duke@435 | 501 | ResourceMark rm(THREAD); |
duke@435 | 502 | |
duke@435 | 503 | if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { |
duke@435 | 504 | return NULL; |
duke@435 | 505 | } |
duke@435 | 506 | |
duke@435 | 507 | char** vm_flags = Arguments::jvm_flags_array(); |
duke@435 | 508 | char** vm_args = Arguments::jvm_args_array(); |
duke@435 | 509 | int num_flags = Arguments::num_jvm_flags(); |
duke@435 | 510 | int num_args = Arguments::num_jvm_args(); |
duke@435 | 511 | |
never@1577 | 512 | instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
duke@435 | 513 | objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
duke@435 | 514 | objArrayHandle result_h(THREAD, r); |
duke@435 | 515 | |
duke@435 | 516 | int index = 0; |
duke@435 | 517 | for (int j = 0; j < num_flags; j++, index++) { |
duke@435 | 518 | Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); |
duke@435 | 519 | result_h->obj_at_put(index, h()); |
duke@435 | 520 | } |
duke@435 | 521 | for (int i = 0; i < num_args; i++, index++) { |
duke@435 | 522 | Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); |
duke@435 | 523 | result_h->obj_at_put(index, h()); |
duke@435 | 524 | } |
duke@435 | 525 | return (jobjectArray) JNIHandles::make_local(env, result_h()); |
duke@435 | 526 | JVM_END |
duke@435 | 527 | |
duke@435 | 528 | // Returns an array of java/lang/management/MemoryPoolMXBean object |
duke@435 | 529 | // one for each memory pool if obj == null; otherwise returns |
duke@435 | 530 | // an array of memory pools for a given memory manager if |
duke@435 | 531 | // it is a valid memory manager. |
duke@435 | 532 | JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) |
duke@435 | 533 | ResourceMark rm(THREAD); |
duke@435 | 534 | |
duke@435 | 535 | int num_memory_pools; |
duke@435 | 536 | MemoryManager* mgr = NULL; |
duke@435 | 537 | if (obj == NULL) { |
duke@435 | 538 | num_memory_pools = MemoryService::num_memory_pools(); |
duke@435 | 539 | } else { |
duke@435 | 540 | mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); |
duke@435 | 541 | if (mgr == NULL) { |
duke@435 | 542 | return NULL; |
duke@435 | 543 | } |
duke@435 | 544 | num_memory_pools = mgr->num_memory_pools(); |
duke@435 | 545 | } |
duke@435 | 546 | |
duke@435 | 547 | // Allocate the resulting MemoryPoolMXBean[] object |
duke@435 | 548 | klassOop k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); |
duke@435 | 549 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 550 | objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); |
duke@435 | 551 | objArrayHandle poolArray(THREAD, r); |
duke@435 | 552 | |
duke@435 | 553 | if (mgr == NULL) { |
duke@435 | 554 | // Get all memory pools |
duke@435 | 555 | for (int i = 0; i < num_memory_pools; i++) { |
duke@435 | 556 | MemoryPool* pool = MemoryService::get_memory_pool(i); |
duke@435 | 557 | instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); |
duke@435 | 558 | instanceHandle ph(THREAD, p); |
duke@435 | 559 | poolArray->obj_at_put(i, ph()); |
duke@435 | 560 | } |
duke@435 | 561 | } else { |
duke@435 | 562 | // Get memory pools managed by a given memory manager |
duke@435 | 563 | for (int i = 0; i < num_memory_pools; i++) { |
duke@435 | 564 | MemoryPool* pool = mgr->get_memory_pool(i); |
duke@435 | 565 | instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); |
duke@435 | 566 | instanceHandle ph(THREAD, p); |
duke@435 | 567 | poolArray->obj_at_put(i, ph()); |
duke@435 | 568 | } |
duke@435 | 569 | } |
duke@435 | 570 | return (jobjectArray) JNIHandles::make_local(env, poolArray()); |
duke@435 | 571 | JVM_END |
duke@435 | 572 | |
duke@435 | 573 | // Returns an array of java/lang/management/MemoryManagerMXBean object |
duke@435 | 574 | // one for each memory manager if obj == null; otherwise returns |
duke@435 | 575 | // an array of memory managers for a given memory pool if |
duke@435 | 576 | // it is a valid memory pool. |
duke@435 | 577 | JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) |
duke@435 | 578 | ResourceMark rm(THREAD); |
duke@435 | 579 | |
duke@435 | 580 | int num_mgrs; |
duke@435 | 581 | MemoryPool* pool = NULL; |
duke@435 | 582 | if (obj == NULL) { |
duke@435 | 583 | num_mgrs = MemoryService::num_memory_managers(); |
duke@435 | 584 | } else { |
duke@435 | 585 | pool = get_memory_pool_from_jobject(obj, CHECK_NULL); |
duke@435 | 586 | if (pool == NULL) { |
duke@435 | 587 | return NULL; |
duke@435 | 588 | } |
duke@435 | 589 | num_mgrs = pool->num_memory_managers(); |
duke@435 | 590 | } |
duke@435 | 591 | |
duke@435 | 592 | // Allocate the resulting MemoryManagerMXBean[] object |
duke@435 | 593 | klassOop k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); |
duke@435 | 594 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 595 | objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); |
duke@435 | 596 | objArrayHandle mgrArray(THREAD, r); |
duke@435 | 597 | |
duke@435 | 598 | if (pool == NULL) { |
duke@435 | 599 | // Get all memory managers |
duke@435 | 600 | for (int i = 0; i < num_mgrs; i++) { |
duke@435 | 601 | MemoryManager* mgr = MemoryService::get_memory_manager(i); |
duke@435 | 602 | instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); |
duke@435 | 603 | instanceHandle ph(THREAD, p); |
duke@435 | 604 | mgrArray->obj_at_put(i, ph()); |
duke@435 | 605 | } |
duke@435 | 606 | } else { |
duke@435 | 607 | // Get memory managers for a given memory pool |
duke@435 | 608 | for (int i = 0; i < num_mgrs; i++) { |
duke@435 | 609 | MemoryManager* mgr = pool->get_memory_manager(i); |
duke@435 | 610 | instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); |
duke@435 | 611 | instanceHandle ph(THREAD, p); |
duke@435 | 612 | mgrArray->obj_at_put(i, ph()); |
duke@435 | 613 | } |
duke@435 | 614 | } |
duke@435 | 615 | return (jobjectArray) JNIHandles::make_local(env, mgrArray()); |
duke@435 | 616 | JVM_END |
duke@435 | 617 | |
duke@435 | 618 | |
duke@435 | 619 | // Returns a java/lang/management/MemoryUsage object containing the memory usage |
duke@435 | 620 | // of a given memory pool. |
duke@435 | 621 | JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) |
duke@435 | 622 | ResourceMark rm(THREAD); |
duke@435 | 623 | |
duke@435 | 624 | MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); |
duke@435 | 625 | if (pool != NULL) { |
duke@435 | 626 | MemoryUsage usage = pool->get_memory_usage(); |
duke@435 | 627 | Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); |
duke@435 | 628 | return JNIHandles::make_local(env, h()); |
duke@435 | 629 | } else { |
duke@435 | 630 | return NULL; |
duke@435 | 631 | } |
duke@435 | 632 | JVM_END |
duke@435 | 633 | |
duke@435 | 634 | // Returns a java/lang/management/MemoryUsage object containing the memory usage |
duke@435 | 635 | // of a given memory pool. |
duke@435 | 636 | JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) |
duke@435 | 637 | ResourceMark rm(THREAD); |
duke@435 | 638 | |
duke@435 | 639 | MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); |
duke@435 | 640 | if (pool != NULL) { |
duke@435 | 641 | MemoryUsage usage = pool->get_peak_memory_usage(); |
duke@435 | 642 | Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); |
duke@435 | 643 | return JNIHandles::make_local(env, h()); |
duke@435 | 644 | } else { |
duke@435 | 645 | return NULL; |
duke@435 | 646 | } |
duke@435 | 647 | JVM_END |
duke@435 | 648 | |
duke@435 | 649 | // Returns a java/lang/management/MemoryUsage object containing the memory usage |
duke@435 | 650 | // of a given memory pool after most recent GC. |
duke@435 | 651 | JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) |
duke@435 | 652 | ResourceMark rm(THREAD); |
duke@435 | 653 | |
duke@435 | 654 | MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); |
duke@435 | 655 | if (pool != NULL && pool->is_collected_pool()) { |
duke@435 | 656 | MemoryUsage usage = pool->get_last_collection_usage(); |
duke@435 | 657 | Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); |
duke@435 | 658 | return JNIHandles::make_local(env, h()); |
duke@435 | 659 | } else { |
duke@435 | 660 | return NULL; |
duke@435 | 661 | } |
duke@435 | 662 | JVM_END |
duke@435 | 663 | |
duke@435 | 664 | // Sets the memory pool sensor for a threshold type |
duke@435 | 665 | JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) |
duke@435 | 666 | if (obj == NULL || sensorObj == NULL) { |
duke@435 | 667 | THROW(vmSymbols::java_lang_NullPointerException()); |
duke@435 | 668 | } |
duke@435 | 669 | |
duke@435 | 670 | klassOop sensor_klass = Management::sun_management_Sensor_klass(CHECK); |
duke@435 | 671 | oop s = JNIHandles::resolve(sensorObj); |
duke@435 | 672 | assert(s->is_instance(), "Sensor should be an instanceOop"); |
duke@435 | 673 | instanceHandle sensor_h(THREAD, (instanceOop) s); |
duke@435 | 674 | if (!sensor_h->is_a(sensor_klass)) { |
duke@435 | 675 | THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 676 | "Sensor is not an instance of sun.management.Sensor class"); |
duke@435 | 677 | } |
duke@435 | 678 | |
duke@435 | 679 | MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); |
duke@435 | 680 | assert(mpool != NULL, "MemoryPool should exist"); |
duke@435 | 681 | |
duke@435 | 682 | switch (type) { |
duke@435 | 683 | case JMM_USAGE_THRESHOLD_HIGH: |
duke@435 | 684 | case JMM_USAGE_THRESHOLD_LOW: |
duke@435 | 685 | // have only one sensor for threshold high and low |
duke@435 | 686 | mpool->set_usage_sensor_obj(sensor_h); |
duke@435 | 687 | break; |
duke@435 | 688 | case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: |
duke@435 | 689 | case JMM_COLLECTION_USAGE_THRESHOLD_LOW: |
duke@435 | 690 | // have only one sensor for threshold high and low |
duke@435 | 691 | mpool->set_gc_usage_sensor_obj(sensor_h); |
duke@435 | 692 | break; |
duke@435 | 693 | default: |
duke@435 | 694 | assert(false, "Unrecognized type"); |
duke@435 | 695 | } |
duke@435 | 696 | |
duke@435 | 697 | JVM_END |
duke@435 | 698 | |
duke@435 | 699 | |
duke@435 | 700 | // Sets the threshold of a given memory pool. |
duke@435 | 701 | // Returns the previous threshold. |
duke@435 | 702 | // |
duke@435 | 703 | // Input parameters: |
duke@435 | 704 | // pool - the MemoryPoolMXBean object |
duke@435 | 705 | // type - threshold type |
duke@435 | 706 | // threshold - the new threshold (must not be negative) |
duke@435 | 707 | // |
duke@435 | 708 | JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) |
duke@435 | 709 | if (threshold < 0) { |
duke@435 | 710 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 711 | "Invalid threshold value", |
duke@435 | 712 | -1); |
duke@435 | 713 | } |
duke@435 | 714 | |
swamyv@924 | 715 | if ((size_t)threshold > max_uintx) { |
swamyv@924 | 716 | stringStream st; |
swamyv@924 | 717 | st.print("Invalid valid threshold value. Threshold value (" UINT64_FORMAT ") > max value of size_t (" SIZE_FORMAT ")", (size_t)threshold, max_uintx); |
swamyv@924 | 718 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
duke@435 | 719 | } |
duke@435 | 720 | |
duke@435 | 721 | MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); |
duke@435 | 722 | assert(pool != NULL, "MemoryPool should exist"); |
duke@435 | 723 | |
duke@435 | 724 | jlong prev = 0; |
duke@435 | 725 | switch (type) { |
duke@435 | 726 | case JMM_USAGE_THRESHOLD_HIGH: |
duke@435 | 727 | if (!pool->usage_threshold()->is_high_threshold_supported()) { |
duke@435 | 728 | return -1; |
duke@435 | 729 | } |
duke@435 | 730 | prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); |
duke@435 | 731 | break; |
duke@435 | 732 | |
duke@435 | 733 | case JMM_USAGE_THRESHOLD_LOW: |
duke@435 | 734 | if (!pool->usage_threshold()->is_low_threshold_supported()) { |
duke@435 | 735 | return -1; |
duke@435 | 736 | } |
duke@435 | 737 | prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); |
duke@435 | 738 | break; |
duke@435 | 739 | |
duke@435 | 740 | case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: |
duke@435 | 741 | if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { |
duke@435 | 742 | return -1; |
duke@435 | 743 | } |
duke@435 | 744 | // return and the new threshold is effective for the next GC |
duke@435 | 745 | return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); |
duke@435 | 746 | |
duke@435 | 747 | case JMM_COLLECTION_USAGE_THRESHOLD_LOW: |
duke@435 | 748 | if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { |
duke@435 | 749 | return -1; |
duke@435 | 750 | } |
duke@435 | 751 | // return and the new threshold is effective for the next GC |
duke@435 | 752 | return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); |
duke@435 | 753 | |
duke@435 | 754 | default: |
duke@435 | 755 | assert(false, "Unrecognized type"); |
duke@435 | 756 | return -1; |
duke@435 | 757 | } |
duke@435 | 758 | |
duke@435 | 759 | // When the threshold is changed, reevaluate if the low memory |
duke@435 | 760 | // detection is enabled. |
duke@435 | 761 | if (prev != threshold) { |
duke@435 | 762 | LowMemoryDetector::recompute_enabled_for_collected_pools(); |
duke@435 | 763 | LowMemoryDetector::detect_low_memory(pool); |
duke@435 | 764 | } |
duke@435 | 765 | return prev; |
duke@435 | 766 | JVM_END |
duke@435 | 767 | |
phh@2423 | 768 | // Gets an array containing the amount of memory allocated on the Java |
phh@2423 | 769 | // heap for a set of threads (in bytes). Each element of the array is |
phh@2423 | 770 | // the amount of memory allocated for the thread ID specified in the |
phh@2423 | 771 | // corresponding entry in the given array of thread IDs; or -1 if the |
phh@2423 | 772 | // thread does not exist or has terminated. |
phh@2423 | 773 | JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
phh@2423 | 774 | jlongArray sizeArray)) |
phh@2423 | 775 | // Check if threads is null |
phh@2423 | 776 | if (ids == NULL || sizeArray == NULL) { |
phh@2423 | 777 | THROW(vmSymbols::java_lang_NullPointerException()); |
phh@2423 | 778 | } |
phh@2423 | 779 | |
phh@2423 | 780 | ResourceMark rm(THREAD); |
phh@2423 | 781 | typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
phh@2423 | 782 | typeArrayHandle ids_ah(THREAD, ta); |
phh@2423 | 783 | |
phh@2423 | 784 | typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
phh@2423 | 785 | typeArrayHandle sizeArray_h(THREAD, sa); |
phh@2423 | 786 | |
phh@2423 | 787 | // validate the thread id array |
phh@2423 | 788 | validate_thread_id_array(ids_ah, CHECK); |
phh@2423 | 789 | |
phh@2423 | 790 | // sizeArray must be of the same length as the given array of thread IDs |
phh@2423 | 791 | int num_threads = ids_ah->length(); |
phh@2423 | 792 | if (num_threads != sizeArray_h->length()) { |
phh@2423 | 793 | THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
phh@2423 | 794 | "The length of the given long array does not match the length of " |
phh@2423 | 795 | "the given array of thread IDs"); |
phh@2423 | 796 | } |
phh@2423 | 797 | |
phh@2423 | 798 | MutexLockerEx ml(Threads_lock); |
phh@2423 | 799 | for (int i = 0; i < num_threads; i++) { |
phh@2423 | 800 | JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
phh@2423 | 801 | if (java_thread != NULL) { |
phh@2423 | 802 | sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
phh@2423 | 803 | } |
phh@2423 | 804 | } |
phh@2423 | 805 | JVM_END |
phh@2423 | 806 | |
duke@435 | 807 | // Returns a java/lang/management/MemoryUsage object representing |
duke@435 | 808 | // the memory usage for the heap or non-heap memory. |
duke@435 | 809 | JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) |
duke@435 | 810 | ResourceMark rm(THREAD); |
duke@435 | 811 | |
duke@435 | 812 | // Calculate the memory usage |
duke@435 | 813 | size_t total_init = 0; |
duke@435 | 814 | size_t total_used = 0; |
duke@435 | 815 | size_t total_committed = 0; |
duke@435 | 816 | size_t total_max = 0; |
duke@435 | 817 | bool has_undefined_init_size = false; |
duke@435 | 818 | bool has_undefined_max_size = false; |
duke@435 | 819 | |
duke@435 | 820 | for (int i = 0; i < MemoryService::num_memory_pools(); i++) { |
duke@435 | 821 | MemoryPool* pool = MemoryService::get_memory_pool(i); |
duke@435 | 822 | if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { |
duke@435 | 823 | MemoryUsage u = pool->get_memory_usage(); |
duke@435 | 824 | total_used += u.used(); |
duke@435 | 825 | total_committed += u.committed(); |
duke@435 | 826 | |
duke@435 | 827 | // if any one of the memory pool has undefined init_size or max_size, |
duke@435 | 828 | // set it to -1 |
duke@435 | 829 | if (u.init_size() == (size_t)-1) { |
duke@435 | 830 | has_undefined_init_size = true; |
duke@435 | 831 | } |
duke@435 | 832 | if (!has_undefined_init_size) { |
duke@435 | 833 | total_init += u.init_size(); |
duke@435 | 834 | } |
duke@435 | 835 | |
duke@435 | 836 | if (u.max_size() == (size_t)-1) { |
duke@435 | 837 | has_undefined_max_size = true; |
duke@435 | 838 | } |
duke@435 | 839 | if (!has_undefined_max_size) { |
duke@435 | 840 | total_max += u.max_size(); |
duke@435 | 841 | } |
duke@435 | 842 | } |
duke@435 | 843 | } |
duke@435 | 844 | |
tonyp@2112 | 845 | // In our current implementation, we make sure that all non-heap |
tonyp@2112 | 846 | // pools have defined init and max sizes. Heap pools do not matter, |
tonyp@2112 | 847 | // as we never use total_init and total_max for them. |
tonyp@2112 | 848 | assert(heap || !has_undefined_init_size, "Undefined init size"); |
tonyp@2112 | 849 | assert(heap || !has_undefined_max_size, "Undefined max size"); |
duke@435 | 850 | |
phh@1499 | 851 | MemoryUsage usage((heap ? InitialHeapSize : total_init), |
duke@435 | 852 | total_used, |
duke@435 | 853 | total_committed, |
duke@435 | 854 | (heap ? Universe::heap()->max_capacity() : total_max)); |
duke@435 | 855 | |
duke@435 | 856 | Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); |
duke@435 | 857 | return JNIHandles::make_local(env, obj()); |
duke@435 | 858 | JVM_END |
duke@435 | 859 | |
duke@435 | 860 | // Returns the boolean value of a given attribute. |
duke@435 | 861 | JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) |
duke@435 | 862 | switch (att) { |
duke@435 | 863 | case JMM_VERBOSE_GC: |
duke@435 | 864 | return MemoryService::get_verbose(); |
duke@435 | 865 | case JMM_VERBOSE_CLASS: |
duke@435 | 866 | return ClassLoadingService::get_verbose(); |
duke@435 | 867 | case JMM_THREAD_CONTENTION_MONITORING: |
duke@435 | 868 | return ThreadService::is_thread_monitoring_contention(); |
duke@435 | 869 | case JMM_THREAD_CPU_TIME: |
duke@435 | 870 | return ThreadService::is_thread_cpu_time_enabled(); |
phh@2423 | 871 | case JMM_THREAD_ALLOCATED_MEMORY: |
phh@2423 | 872 | return ThreadService::is_thread_allocated_memory_enabled(); |
duke@435 | 873 | default: |
duke@435 | 874 | assert(0, "Unrecognized attribute"); |
duke@435 | 875 | return false; |
duke@435 | 876 | } |
duke@435 | 877 | JVM_END |
duke@435 | 878 | |
duke@435 | 879 | // Sets the given boolean attribute and returns the previous value. |
duke@435 | 880 | JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) |
duke@435 | 881 | switch (att) { |
duke@435 | 882 | case JMM_VERBOSE_GC: |
duke@435 | 883 | return MemoryService::set_verbose(flag != 0); |
duke@435 | 884 | case JMM_VERBOSE_CLASS: |
duke@435 | 885 | return ClassLoadingService::set_verbose(flag != 0); |
duke@435 | 886 | case JMM_THREAD_CONTENTION_MONITORING: |
duke@435 | 887 | return ThreadService::set_thread_monitoring_contention(flag != 0); |
duke@435 | 888 | case JMM_THREAD_CPU_TIME: |
duke@435 | 889 | return ThreadService::set_thread_cpu_time_enabled(flag != 0); |
phh@2423 | 890 | case JMM_THREAD_ALLOCATED_MEMORY: |
phh@2423 | 891 | return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
duke@435 | 892 | default: |
duke@435 | 893 | assert(0, "Unrecognized attribute"); |
duke@435 | 894 | return false; |
duke@435 | 895 | } |
duke@435 | 896 | JVM_END |
duke@435 | 897 | |
duke@435 | 898 | |
duke@435 | 899 | static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { |
duke@435 | 900 | switch (att) { |
duke@435 | 901 | case JMM_GC_TIME_MS: |
duke@435 | 902 | return mgr->gc_time_ms(); |
duke@435 | 903 | |
duke@435 | 904 | case JMM_GC_COUNT: |
duke@435 | 905 | return mgr->gc_count(); |
duke@435 | 906 | |
duke@435 | 907 | case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: |
duke@435 | 908 | // current implementation only has 1 ext attribute |
duke@435 | 909 | return 1; |
duke@435 | 910 | |
duke@435 | 911 | default: |
duke@435 | 912 | assert(0, "Unrecognized GC attribute"); |
duke@435 | 913 | return -1; |
duke@435 | 914 | } |
duke@435 | 915 | } |
duke@435 | 916 | |
duke@435 | 917 | class VmThreadCountClosure: public ThreadClosure { |
duke@435 | 918 | private: |
duke@435 | 919 | int _count; |
duke@435 | 920 | public: |
duke@435 | 921 | VmThreadCountClosure() : _count(0) {}; |
duke@435 | 922 | void do_thread(Thread* thread); |
duke@435 | 923 | int count() { return _count; } |
duke@435 | 924 | }; |
duke@435 | 925 | |
duke@435 | 926 | void VmThreadCountClosure::do_thread(Thread* thread) { |
duke@435 | 927 | // exclude externally visible JavaThreads |
duke@435 | 928 | if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { |
duke@435 | 929 | return; |
duke@435 | 930 | } |
duke@435 | 931 | |
duke@435 | 932 | _count++; |
duke@435 | 933 | } |
duke@435 | 934 | |
duke@435 | 935 | static jint get_vm_thread_count() { |
duke@435 | 936 | VmThreadCountClosure vmtcc; |
duke@435 | 937 | { |
duke@435 | 938 | MutexLockerEx ml(Threads_lock); |
duke@435 | 939 | Threads::threads_do(&vmtcc); |
duke@435 | 940 | } |
duke@435 | 941 | |
duke@435 | 942 | return vmtcc.count(); |
duke@435 | 943 | } |
duke@435 | 944 | |
duke@435 | 945 | static jint get_num_flags() { |
duke@435 | 946 | // last flag entry is always NULL, so subtract 1 |
duke@435 | 947 | int nFlags = (int) Flag::numFlags - 1; |
duke@435 | 948 | int count = 0; |
duke@435 | 949 | for (int i = 0; i < nFlags; i++) { |
duke@435 | 950 | Flag* flag = &Flag::flags[i]; |
ysr@785 | 951 | // Exclude the locked (diagnostic, experimental) flags |
duke@435 | 952 | if (flag->is_unlocked() || flag->is_unlocker()) { |
duke@435 | 953 | count++; |
duke@435 | 954 | } |
duke@435 | 955 | } |
duke@435 | 956 | return count; |
duke@435 | 957 | } |
duke@435 | 958 | |
duke@435 | 959 | static jlong get_long_attribute(jmmLongAttribute att) { |
duke@435 | 960 | switch (att) { |
duke@435 | 961 | case JMM_CLASS_LOADED_COUNT: |
duke@435 | 962 | return ClassLoadingService::loaded_class_count(); |
duke@435 | 963 | |
duke@435 | 964 | case JMM_CLASS_UNLOADED_COUNT: |
duke@435 | 965 | return ClassLoadingService::unloaded_class_count(); |
duke@435 | 966 | |
duke@435 | 967 | case JMM_THREAD_TOTAL_COUNT: |
duke@435 | 968 | return ThreadService::get_total_thread_count(); |
duke@435 | 969 | |
duke@435 | 970 | case JMM_THREAD_LIVE_COUNT: |
duke@435 | 971 | return ThreadService::get_live_thread_count(); |
duke@435 | 972 | |
duke@435 | 973 | case JMM_THREAD_PEAK_COUNT: |
duke@435 | 974 | return ThreadService::get_peak_thread_count(); |
duke@435 | 975 | |
duke@435 | 976 | case JMM_THREAD_DAEMON_COUNT: |
duke@435 | 977 | return ThreadService::get_daemon_thread_count(); |
duke@435 | 978 | |
duke@435 | 979 | case JMM_JVM_INIT_DONE_TIME_MS: |
duke@435 | 980 | return Management::vm_init_done_time(); |
duke@435 | 981 | |
duke@435 | 982 | case JMM_COMPILE_TOTAL_TIME_MS: |
duke@435 | 983 | return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); |
duke@435 | 984 | |
duke@435 | 985 | case JMM_OS_PROCESS_ID: |
duke@435 | 986 | return os::current_process_id(); |
duke@435 | 987 | |
duke@435 | 988 | // Hotspot-specific counters |
duke@435 | 989 | case JMM_CLASS_LOADED_BYTES: |
duke@435 | 990 | return ClassLoadingService::loaded_class_bytes(); |
duke@435 | 991 | |
duke@435 | 992 | case JMM_CLASS_UNLOADED_BYTES: |
duke@435 | 993 | return ClassLoadingService::unloaded_class_bytes(); |
duke@435 | 994 | |
duke@435 | 995 | case JMM_SHARED_CLASS_LOADED_COUNT: |
duke@435 | 996 | return ClassLoadingService::loaded_shared_class_count(); |
duke@435 | 997 | |
duke@435 | 998 | case JMM_SHARED_CLASS_UNLOADED_COUNT: |
duke@435 | 999 | return ClassLoadingService::unloaded_shared_class_count(); |
duke@435 | 1000 | |
duke@435 | 1001 | |
duke@435 | 1002 | case JMM_SHARED_CLASS_LOADED_BYTES: |
duke@435 | 1003 | return ClassLoadingService::loaded_shared_class_bytes(); |
duke@435 | 1004 | |
duke@435 | 1005 | case JMM_SHARED_CLASS_UNLOADED_BYTES: |
duke@435 | 1006 | return ClassLoadingService::unloaded_shared_class_bytes(); |
duke@435 | 1007 | |
duke@435 | 1008 | case JMM_TOTAL_CLASSLOAD_TIME_MS: |
duke@435 | 1009 | return ClassLoader::classloader_time_ms(); |
duke@435 | 1010 | |
duke@435 | 1011 | case JMM_VM_GLOBAL_COUNT: |
duke@435 | 1012 | return get_num_flags(); |
duke@435 | 1013 | |
duke@435 | 1014 | case JMM_SAFEPOINT_COUNT: |
duke@435 | 1015 | return RuntimeService::safepoint_count(); |
duke@435 | 1016 | |
duke@435 | 1017 | case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: |
duke@435 | 1018 | return RuntimeService::safepoint_sync_time_ms(); |
duke@435 | 1019 | |
duke@435 | 1020 | case JMM_TOTAL_STOPPED_TIME_MS: |
duke@435 | 1021 | return RuntimeService::safepoint_time_ms(); |
duke@435 | 1022 | |
duke@435 | 1023 | case JMM_TOTAL_APP_TIME_MS: |
duke@435 | 1024 | return RuntimeService::application_time_ms(); |
duke@435 | 1025 | |
duke@435 | 1026 | case JMM_VM_THREAD_COUNT: |
duke@435 | 1027 | return get_vm_thread_count(); |
duke@435 | 1028 | |
duke@435 | 1029 | case JMM_CLASS_INIT_TOTAL_COUNT: |
duke@435 | 1030 | return ClassLoader::class_init_count(); |
duke@435 | 1031 | |
duke@435 | 1032 | case JMM_CLASS_INIT_TOTAL_TIME_MS: |
duke@435 | 1033 | return ClassLoader::class_init_time_ms(); |
duke@435 | 1034 | |
duke@435 | 1035 | case JMM_CLASS_VERIFY_TOTAL_TIME_MS: |
duke@435 | 1036 | return ClassLoader::class_verify_time_ms(); |
duke@435 | 1037 | |
duke@435 | 1038 | case JMM_METHOD_DATA_SIZE_BYTES: |
duke@435 | 1039 | return ClassLoadingService::class_method_data_size(); |
duke@435 | 1040 | |
duke@435 | 1041 | case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: |
duke@435 | 1042 | return os::physical_memory(); |
duke@435 | 1043 | |
duke@435 | 1044 | default: |
duke@435 | 1045 | return -1; |
duke@435 | 1046 | } |
duke@435 | 1047 | } |
duke@435 | 1048 | |
duke@435 | 1049 | |
duke@435 | 1050 | // Returns the long value of a given attribute. |
duke@435 | 1051 | JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) |
duke@435 | 1052 | if (obj == NULL) { |
duke@435 | 1053 | return get_long_attribute(att); |
duke@435 | 1054 | } else { |
duke@435 | 1055 | GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); |
duke@435 | 1056 | if (mgr != NULL) { |
duke@435 | 1057 | return get_gc_attribute(mgr, att); |
duke@435 | 1058 | } |
duke@435 | 1059 | } |
duke@435 | 1060 | return -1; |
duke@435 | 1061 | JVM_END |
duke@435 | 1062 | |
duke@435 | 1063 | // Gets the value of all attributes specified in the given array |
duke@435 | 1064 | // and sets the value in the result array. |
duke@435 | 1065 | // Returns the number of attributes found. |
duke@435 | 1066 | JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, |
duke@435 | 1067 | jobject obj, |
duke@435 | 1068 | jmmLongAttribute* atts, |
duke@435 | 1069 | jint count, |
duke@435 | 1070 | jlong* result)) |
duke@435 | 1071 | |
duke@435 | 1072 | int num_atts = 0; |
duke@435 | 1073 | if (obj == NULL) { |
duke@435 | 1074 | for (int i = 0; i < count; i++) { |
duke@435 | 1075 | result[i] = get_long_attribute(atts[i]); |
duke@435 | 1076 | if (result[i] != -1) { |
duke@435 | 1077 | num_atts++; |
duke@435 | 1078 | } |
duke@435 | 1079 | } |
duke@435 | 1080 | } else { |
duke@435 | 1081 | GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); |
duke@435 | 1082 | for (int i = 0; i < count; i++) { |
duke@435 | 1083 | result[i] = get_gc_attribute(mgr, atts[i]); |
duke@435 | 1084 | if (result[i] != -1) { |
duke@435 | 1085 | num_atts++; |
duke@435 | 1086 | } |
duke@435 | 1087 | } |
duke@435 | 1088 | } |
duke@435 | 1089 | return num_atts; |
duke@435 | 1090 | JVM_END |
duke@435 | 1091 | |
duke@435 | 1092 | // Helper function to do thread dump for a specific list of threads |
duke@435 | 1093 | static void do_thread_dump(ThreadDumpResult* dump_result, |
duke@435 | 1094 | typeArrayHandle ids_ah, // array of thread ID (long[]) |
duke@435 | 1095 | int num_threads, |
duke@435 | 1096 | int max_depth, |
duke@435 | 1097 | bool with_locked_monitors, |
duke@435 | 1098 | bool with_locked_synchronizers, |
duke@435 | 1099 | TRAPS) { |
duke@435 | 1100 | |
duke@435 | 1101 | // First get an array of threadObj handles. |
duke@435 | 1102 | // A JavaThread may terminate before we get the stack trace. |
duke@435 | 1103 | GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); |
duke@435 | 1104 | { |
duke@435 | 1105 | MutexLockerEx ml(Threads_lock); |
duke@435 | 1106 | for (int i = 0; i < num_threads; i++) { |
duke@435 | 1107 | jlong tid = ids_ah->long_at(i); |
duke@435 | 1108 | JavaThread* jt = find_java_thread_from_id(tid); |
duke@435 | 1109 | oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); |
duke@435 | 1110 | instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); |
duke@435 | 1111 | thread_handle_array->append(threadObj_h); |
duke@435 | 1112 | } |
duke@435 | 1113 | } |
duke@435 | 1114 | |
duke@435 | 1115 | // Obtain thread dumps and thread snapshot information |
duke@435 | 1116 | VM_ThreadDump op(dump_result, |
duke@435 | 1117 | thread_handle_array, |
duke@435 | 1118 | num_threads, |
duke@435 | 1119 | max_depth, /* stack depth */ |
duke@435 | 1120 | with_locked_monitors, |
duke@435 | 1121 | with_locked_synchronizers); |
duke@435 | 1122 | VMThread::execute(&op); |
duke@435 | 1123 | } |
duke@435 | 1124 | |
duke@435 | 1125 | // Gets an array of ThreadInfo objects. Each element is the ThreadInfo |
duke@435 | 1126 | // for the thread ID specified in the corresponding entry in |
duke@435 | 1127 | // the given array of thread IDs; or NULL if the thread does not exist |
duke@435 | 1128 | // or has terminated. |
duke@435 | 1129 | // |
duke@435 | 1130 | // Input parameters: |
duke@435 | 1131 | // ids - array of thread IDs |
duke@435 | 1132 | // maxDepth - the maximum depth of stack traces to be dumped: |
duke@435 | 1133 | // maxDepth == -1 requests to dump entire stack trace. |
duke@435 | 1134 | // maxDepth == 0 requests no stack trace. |
duke@435 | 1135 | // infoArray - array of ThreadInfo objects |
duke@435 | 1136 | // |
phh@2423 | 1137 | // QQQ - Why does this method return a value instead of void? |
duke@435 | 1138 | JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
duke@435 | 1139 | // Check if threads is null |
duke@435 | 1140 | if (ids == NULL || infoArray == NULL) { |
duke@435 | 1141 | THROW_(vmSymbols::java_lang_NullPointerException(), -1); |
duke@435 | 1142 | } |
duke@435 | 1143 | |
duke@435 | 1144 | if (maxDepth < -1) { |
duke@435 | 1145 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1146 | "Invalid maxDepth", -1); |
duke@435 | 1147 | } |
duke@435 | 1148 | |
duke@435 | 1149 | ResourceMark rm(THREAD); |
duke@435 | 1150 | typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
duke@435 | 1151 | typeArrayHandle ids_ah(THREAD, ta); |
duke@435 | 1152 | |
duke@435 | 1153 | oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); |
duke@435 | 1154 | objArrayOop oa = objArrayOop(infoArray_obj); |
duke@435 | 1155 | objArrayHandle infoArray_h(THREAD, oa); |
duke@435 | 1156 | |
duke@435 | 1157 | // validate the thread id array |
duke@435 | 1158 | validate_thread_id_array(ids_ah, CHECK_0); |
duke@435 | 1159 | |
duke@435 | 1160 | // validate the ThreadInfo[] parameters |
duke@435 | 1161 | validate_thread_info_array(infoArray_h, CHECK_0); |
duke@435 | 1162 | |
duke@435 | 1163 | // infoArray must be of the same length as the given array of thread IDs |
duke@435 | 1164 | int num_threads = ids_ah->length(); |
duke@435 | 1165 | if (num_threads != infoArray_h->length()) { |
duke@435 | 1166 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1167 | "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); |
duke@435 | 1168 | } |
duke@435 | 1169 | |
duke@435 | 1170 | if (JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 1171 | // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots |
duke@435 | 1172 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); |
duke@435 | 1173 | } |
duke@435 | 1174 | |
duke@435 | 1175 | // Must use ThreadDumpResult to store the ThreadSnapshot. |
duke@435 | 1176 | // GC may occur after the thread snapshots are taken but before |
duke@435 | 1177 | // this function returns. The threadObj and other oops kept |
duke@435 | 1178 | // in the ThreadSnapshot are marked and adjusted during GC. |
duke@435 | 1179 | ThreadDumpResult dump_result(num_threads); |
duke@435 | 1180 | |
duke@435 | 1181 | if (maxDepth == 0) { |
duke@435 | 1182 | // no stack trace dumped - do not need to stop the world |
duke@435 | 1183 | { |
duke@435 | 1184 | MutexLockerEx ml(Threads_lock); |
duke@435 | 1185 | for (int i = 0; i < num_threads; i++) { |
duke@435 | 1186 | jlong tid = ids_ah->long_at(i); |
duke@435 | 1187 | JavaThread* jt = find_java_thread_from_id(tid); |
duke@435 | 1188 | ThreadSnapshot* ts; |
duke@435 | 1189 | if (jt == NULL) { |
duke@435 | 1190 | // if the thread does not exist or now it is terminated, |
duke@435 | 1191 | // create dummy snapshot |
duke@435 | 1192 | ts = new ThreadSnapshot(); |
duke@435 | 1193 | } else { |
duke@435 | 1194 | ts = new ThreadSnapshot(jt); |
duke@435 | 1195 | } |
duke@435 | 1196 | dump_result.add_thread_snapshot(ts); |
duke@435 | 1197 | } |
duke@435 | 1198 | } |
duke@435 | 1199 | } else { |
duke@435 | 1200 | // obtain thread dump with the specific list of threads with stack trace |
duke@435 | 1201 | do_thread_dump(&dump_result, |
duke@435 | 1202 | ids_ah, |
duke@435 | 1203 | num_threads, |
duke@435 | 1204 | maxDepth, |
duke@435 | 1205 | false, /* no locked monitor */ |
duke@435 | 1206 | false, /* no locked synchronizers */ |
duke@435 | 1207 | CHECK_0); |
duke@435 | 1208 | } |
duke@435 | 1209 | |
duke@435 | 1210 | int num_snapshots = dump_result.num_snapshots(); |
duke@435 | 1211 | assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); |
duke@435 | 1212 | int index = 0; |
duke@435 | 1213 | for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { |
duke@435 | 1214 | // For each thread, create an java/lang/management/ThreadInfo object |
duke@435 | 1215 | // and fill with the thread information |
duke@435 | 1216 | |
duke@435 | 1217 | if (ts->threadObj() == NULL) { |
duke@435 | 1218 | // if the thread does not exist or now it is terminated, set threadinfo to NULL |
duke@435 | 1219 | infoArray_h->obj_at_put(index, NULL); |
duke@435 | 1220 | continue; |
duke@435 | 1221 | } |
duke@435 | 1222 | |
duke@435 | 1223 | // Create java.lang.management.ThreadInfo object |
duke@435 | 1224 | instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); |
duke@435 | 1225 | infoArray_h->obj_at_put(index, info_obj); |
duke@435 | 1226 | } |
duke@435 | 1227 | return 0; |
duke@435 | 1228 | JVM_END |
duke@435 | 1229 | |
duke@435 | 1230 | // Dump thread info for the specified threads. |
duke@435 | 1231 | // It returns an array of ThreadInfo objects. Each element is the ThreadInfo |
duke@435 | 1232 | // for the thread ID specified in the corresponding entry in |
duke@435 | 1233 | // the given array of thread IDs; or NULL if the thread does not exist |
duke@435 | 1234 | // or has terminated. |
duke@435 | 1235 | // |
duke@435 | 1236 | // Input parameter: |
duke@435 | 1237 | // ids - array of thread IDs; NULL indicates all live threads |
duke@435 | 1238 | // locked_monitors - if true, dump locked object monitors |
duke@435 | 1239 | // locked_synchronizers - if true, dump locked JSR-166 synchronizers |
duke@435 | 1240 | // |
duke@435 | 1241 | JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) |
duke@435 | 1242 | ResourceMark rm(THREAD); |
duke@435 | 1243 | |
duke@435 | 1244 | if (JDK_Version::is_gte_jdk16x_version()) { |
duke@435 | 1245 | // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots |
duke@435 | 1246 | java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); |
duke@435 | 1247 | } |
duke@435 | 1248 | |
duke@435 | 1249 | typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); |
duke@435 | 1250 | int num_threads = (ta != NULL ? ta->length() : 0); |
duke@435 | 1251 | typeArrayHandle ids_ah(THREAD, ta); |
duke@435 | 1252 | |
duke@435 | 1253 | ThreadDumpResult dump_result(num_threads); // can safepoint |
duke@435 | 1254 | |
duke@435 | 1255 | if (ids_ah() != NULL) { |
duke@435 | 1256 | |
duke@435 | 1257 | // validate the thread id array |
duke@435 | 1258 | validate_thread_id_array(ids_ah, CHECK_NULL); |
duke@435 | 1259 | |
duke@435 | 1260 | // obtain thread dump of a specific list of threads |
duke@435 | 1261 | do_thread_dump(&dump_result, |
duke@435 | 1262 | ids_ah, |
duke@435 | 1263 | num_threads, |
duke@435 | 1264 | -1, /* entire stack */ |
duke@435 | 1265 | (locked_monitors ? true : false), /* with locked monitors */ |
duke@435 | 1266 | (locked_synchronizers ? true : false), /* with locked synchronizers */ |
duke@435 | 1267 | CHECK_NULL); |
duke@435 | 1268 | } else { |
duke@435 | 1269 | // obtain thread dump of all threads |
duke@435 | 1270 | VM_ThreadDump op(&dump_result, |
duke@435 | 1271 | -1, /* entire stack */ |
duke@435 | 1272 | (locked_monitors ? true : false), /* with locked monitors */ |
duke@435 | 1273 | (locked_synchronizers ? true : false) /* with locked synchronizers */); |
duke@435 | 1274 | VMThread::execute(&op); |
duke@435 | 1275 | } |
duke@435 | 1276 | |
duke@435 | 1277 | int num_snapshots = dump_result.num_snapshots(); |
duke@435 | 1278 | |
duke@435 | 1279 | // create the result ThreadInfo[] object |
duke@435 | 1280 | klassOop k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
duke@435 | 1281 | instanceKlassHandle ik (THREAD, k); |
duke@435 | 1282 | objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); |
duke@435 | 1283 | objArrayHandle result_h(THREAD, r); |
duke@435 | 1284 | |
duke@435 | 1285 | int index = 0; |
duke@435 | 1286 | for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { |
duke@435 | 1287 | if (ts->threadObj() == NULL) { |
duke@435 | 1288 | // if the thread does not exist or now it is terminated, set threadinfo to NULL |
duke@435 | 1289 | result_h->obj_at_put(index, NULL); |
duke@435 | 1290 | continue; |
duke@435 | 1291 | } |
duke@435 | 1292 | |
duke@435 | 1293 | ThreadStackTrace* stacktrace = ts->get_stack_trace(); |
duke@435 | 1294 | assert(stacktrace != NULL, "Must have a stack trace dumped"); |
duke@435 | 1295 | |
duke@435 | 1296 | // Create Object[] filled with locked monitors |
duke@435 | 1297 | // Create int[] filled with the stack depth where a monitor was locked |
duke@435 | 1298 | int num_frames = stacktrace->get_stack_depth(); |
duke@435 | 1299 | int num_locked_monitors = stacktrace->num_jni_locked_monitors(); |
duke@435 | 1300 | |
duke@435 | 1301 | // Count the total number of locked monitors |
duke@435 | 1302 | for (int i = 0; i < num_frames; i++) { |
duke@435 | 1303 | StackFrameInfo* frame = stacktrace->stack_frame_at(i); |
duke@435 | 1304 | num_locked_monitors += frame->num_locked_monitors(); |
duke@435 | 1305 | } |
duke@435 | 1306 | |
duke@435 | 1307 | objArrayHandle monitors_array; |
duke@435 | 1308 | typeArrayHandle depths_array; |
duke@435 | 1309 | objArrayHandle synchronizers_array; |
duke@435 | 1310 | |
duke@435 | 1311 | if (locked_monitors) { |
duke@435 | 1312 | // Constructs Object[] and int[] to contain the object monitor and the stack depth |
duke@435 | 1313 | // where the thread locked it |
duke@435 | 1314 | objArrayOop array = oopFactory::new_system_objArray(num_locked_monitors, CHECK_NULL); |
duke@435 | 1315 | objArrayHandle mh(THREAD, array); |
duke@435 | 1316 | monitors_array = mh; |
duke@435 | 1317 | |
duke@435 | 1318 | typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); |
duke@435 | 1319 | typeArrayHandle dh(THREAD, tarray); |
duke@435 | 1320 | depths_array = dh; |
duke@435 | 1321 | |
duke@435 | 1322 | int count = 0; |
duke@435 | 1323 | int j = 0; |
duke@435 | 1324 | for (int depth = 0; depth < num_frames; depth++) { |
duke@435 | 1325 | StackFrameInfo* frame = stacktrace->stack_frame_at(depth); |
duke@435 | 1326 | int len = frame->num_locked_monitors(); |
duke@435 | 1327 | GrowableArray<oop>* locked_monitors = frame->locked_monitors(); |
duke@435 | 1328 | for (j = 0; j < len; j++) { |
duke@435 | 1329 | oop monitor = locked_monitors->at(j); |
duke@435 | 1330 | assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); |
duke@435 | 1331 | monitors_array->obj_at_put(count, monitor); |
duke@435 | 1332 | depths_array->int_at_put(count, depth); |
duke@435 | 1333 | count++; |
duke@435 | 1334 | } |
duke@435 | 1335 | } |
duke@435 | 1336 | |
duke@435 | 1337 | GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); |
duke@435 | 1338 | for (j = 0; j < jni_locked_monitors->length(); j++) { |
duke@435 | 1339 | oop object = jni_locked_monitors->at(j); |
duke@435 | 1340 | assert(object != NULL && object->is_instance(), "must be a Java object"); |
duke@435 | 1341 | monitors_array->obj_at_put(count, object); |
duke@435 | 1342 | // Monitor locked via JNI MonitorEnter call doesn't have stack depth info |
duke@435 | 1343 | depths_array->int_at_put(count, -1); |
duke@435 | 1344 | count++; |
duke@435 | 1345 | } |
duke@435 | 1346 | assert(count == num_locked_monitors, "number of locked monitors doesn't match"); |
duke@435 | 1347 | } |
duke@435 | 1348 | |
duke@435 | 1349 | if (locked_synchronizers) { |
duke@435 | 1350 | // Create Object[] filled with locked JSR-166 synchronizers |
duke@435 | 1351 | assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); |
duke@435 | 1352 | ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); |
duke@435 | 1353 | GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); |
duke@435 | 1354 | int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); |
duke@435 | 1355 | |
duke@435 | 1356 | objArrayOop array = oopFactory::new_system_objArray(num_locked_synchronizers, CHECK_NULL); |
duke@435 | 1357 | objArrayHandle sh(THREAD, array); |
duke@435 | 1358 | synchronizers_array = sh; |
duke@435 | 1359 | |
duke@435 | 1360 | for (int k = 0; k < num_locked_synchronizers; k++) { |
duke@435 | 1361 | synchronizers_array->obj_at_put(k, locks->at(k)); |
duke@435 | 1362 | } |
duke@435 | 1363 | } |
duke@435 | 1364 | |
duke@435 | 1365 | // Create java.lang.management.ThreadInfo object |
duke@435 | 1366 | instanceOop info_obj = Management::create_thread_info_instance(ts, |
duke@435 | 1367 | monitors_array, |
duke@435 | 1368 | depths_array, |
duke@435 | 1369 | synchronizers_array, |
duke@435 | 1370 | CHECK_NULL); |
duke@435 | 1371 | result_h->obj_at_put(index, info_obj); |
duke@435 | 1372 | } |
duke@435 | 1373 | |
duke@435 | 1374 | return (jobjectArray) JNIHandles::make_local(env, result_h()); |
duke@435 | 1375 | JVM_END |
duke@435 | 1376 | |
duke@435 | 1377 | // Returns an array of Class objects. |
duke@435 | 1378 | JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) |
duke@435 | 1379 | ResourceMark rm(THREAD); |
duke@435 | 1380 | |
duke@435 | 1381 | LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter |
duke@435 | 1382 | |
duke@435 | 1383 | int num_classes = lce.num_loaded_classes(); |
never@1577 | 1384 | objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
duke@435 | 1385 | objArrayHandle classes_ah(THREAD, r); |
duke@435 | 1386 | |
duke@435 | 1387 | for (int i = 0; i < num_classes; i++) { |
duke@435 | 1388 | KlassHandle kh = lce.get_klass(i); |
duke@435 | 1389 | oop mirror = Klass::cast(kh())->java_mirror(); |
duke@435 | 1390 | classes_ah->obj_at_put(i, mirror); |
duke@435 | 1391 | } |
duke@435 | 1392 | |
duke@435 | 1393 | return (jobjectArray) JNIHandles::make_local(env, classes_ah()); |
duke@435 | 1394 | JVM_END |
duke@435 | 1395 | |
duke@435 | 1396 | // Reset statistic. Return true if the requested statistic is reset. |
duke@435 | 1397 | // Otherwise, return false. |
duke@435 | 1398 | // |
duke@435 | 1399 | // Input parameters: |
duke@435 | 1400 | // obj - specify which instance the statistic associated with to be reset |
duke@435 | 1401 | // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. |
duke@435 | 1402 | // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. |
duke@435 | 1403 | // type - the type of statistic to be reset |
duke@435 | 1404 | // |
duke@435 | 1405 | JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) |
duke@435 | 1406 | ResourceMark rm(THREAD); |
duke@435 | 1407 | |
duke@435 | 1408 | switch (type) { |
duke@435 | 1409 | case JMM_STAT_PEAK_THREAD_COUNT: |
duke@435 | 1410 | ThreadService::reset_peak_thread_count(); |
duke@435 | 1411 | return true; |
duke@435 | 1412 | |
duke@435 | 1413 | case JMM_STAT_THREAD_CONTENTION_COUNT: |
duke@435 | 1414 | case JMM_STAT_THREAD_CONTENTION_TIME: { |
duke@435 | 1415 | jlong tid = obj.j; |
duke@435 | 1416 | if (tid < 0) { |
duke@435 | 1417 | THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); |
duke@435 | 1418 | } |
duke@435 | 1419 | |
duke@435 | 1420 | // Look for the JavaThread of this given tid |
duke@435 | 1421 | MutexLockerEx ml(Threads_lock); |
duke@435 | 1422 | if (tid == 0) { |
duke@435 | 1423 | // reset contention statistics for all threads if tid == 0 |
duke@435 | 1424 | for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { |
duke@435 | 1425 | if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { |
duke@435 | 1426 | ThreadService::reset_contention_count_stat(java_thread); |
duke@435 | 1427 | } else { |
duke@435 | 1428 | ThreadService::reset_contention_time_stat(java_thread); |
duke@435 | 1429 | } |
duke@435 | 1430 | } |
duke@435 | 1431 | } else { |
duke@435 | 1432 | // reset contention statistics for a given thread |
duke@435 | 1433 | JavaThread* java_thread = find_java_thread_from_id(tid); |
duke@435 | 1434 | if (java_thread == NULL) { |
duke@435 | 1435 | return false; |
duke@435 | 1436 | } |
duke@435 | 1437 | |
duke@435 | 1438 | if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { |
duke@435 | 1439 | ThreadService::reset_contention_count_stat(java_thread); |
duke@435 | 1440 | } else { |
duke@435 | 1441 | ThreadService::reset_contention_time_stat(java_thread); |
duke@435 | 1442 | } |
duke@435 | 1443 | } |
duke@435 | 1444 | return true; |
duke@435 | 1445 | break; |
duke@435 | 1446 | } |
duke@435 | 1447 | case JMM_STAT_PEAK_POOL_USAGE: { |
duke@435 | 1448 | jobject o = obj.l; |
duke@435 | 1449 | if (o == NULL) { |
duke@435 | 1450 | THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); |
duke@435 | 1451 | } |
duke@435 | 1452 | |
duke@435 | 1453 | oop pool_obj = JNIHandles::resolve(o); |
duke@435 | 1454 | assert(pool_obj->is_instance(), "Should be an instanceOop"); |
duke@435 | 1455 | instanceHandle ph(THREAD, (instanceOop) pool_obj); |
duke@435 | 1456 | |
duke@435 | 1457 | MemoryPool* pool = MemoryService::get_memory_pool(ph); |
duke@435 | 1458 | if (pool != NULL) { |
duke@435 | 1459 | pool->reset_peak_memory_usage(); |
duke@435 | 1460 | return true; |
duke@435 | 1461 | } |
duke@435 | 1462 | break; |
duke@435 | 1463 | } |
duke@435 | 1464 | case JMM_STAT_GC_STAT: { |
duke@435 | 1465 | jobject o = obj.l; |
duke@435 | 1466 | if (o == NULL) { |
duke@435 | 1467 | THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); |
duke@435 | 1468 | } |
duke@435 | 1469 | |
duke@435 | 1470 | GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); |
duke@435 | 1471 | if (mgr != NULL) { |
duke@435 | 1472 | mgr->reset_gc_stat(); |
duke@435 | 1473 | return true; |
duke@435 | 1474 | } |
duke@435 | 1475 | break; |
duke@435 | 1476 | } |
duke@435 | 1477 | default: |
duke@435 | 1478 | assert(0, "Unknown Statistic Type"); |
duke@435 | 1479 | } |
duke@435 | 1480 | return false; |
duke@435 | 1481 | JVM_END |
duke@435 | 1482 | |
duke@435 | 1483 | // Returns the fast estimate of CPU time consumed by |
duke@435 | 1484 | // a given thread (in nanoseconds). |
duke@435 | 1485 | // If thread_id == 0, return CPU time for the current thread. |
duke@435 | 1486 | JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) |
duke@435 | 1487 | if (!os::is_thread_cpu_time_supported()) { |
duke@435 | 1488 | return -1; |
duke@435 | 1489 | } |
duke@435 | 1490 | |
duke@435 | 1491 | if (thread_id < 0) { |
duke@435 | 1492 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1493 | "Invalid thread ID", -1); |
duke@435 | 1494 | } |
duke@435 | 1495 | |
duke@435 | 1496 | JavaThread* java_thread = NULL; |
duke@435 | 1497 | if (thread_id == 0) { |
duke@435 | 1498 | // current thread |
duke@435 | 1499 | return os::current_thread_cpu_time(); |
duke@435 | 1500 | } else { |
duke@435 | 1501 | MutexLockerEx ml(Threads_lock); |
duke@435 | 1502 | java_thread = find_java_thread_from_id(thread_id); |
duke@435 | 1503 | if (java_thread != NULL) { |
duke@435 | 1504 | return os::thread_cpu_time((Thread*) java_thread); |
duke@435 | 1505 | } |
duke@435 | 1506 | } |
duke@435 | 1507 | return -1; |
duke@435 | 1508 | JVM_END |
duke@435 | 1509 | |
duke@435 | 1510 | // Returns the CPU time consumed by a given thread (in nanoseconds). |
duke@435 | 1511 | // If thread_id == 0, CPU time for the current thread is returned. |
duke@435 | 1512 | // If user_sys_cpu_time = true, user level and system CPU time of |
duke@435 | 1513 | // a given thread is returned; otherwise, only user level CPU time |
duke@435 | 1514 | // is returned. |
duke@435 | 1515 | JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) |
duke@435 | 1516 | if (!os::is_thread_cpu_time_supported()) { |
duke@435 | 1517 | return -1; |
duke@435 | 1518 | } |
duke@435 | 1519 | |
duke@435 | 1520 | if (thread_id < 0) { |
duke@435 | 1521 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1522 | "Invalid thread ID", -1); |
duke@435 | 1523 | } |
duke@435 | 1524 | |
duke@435 | 1525 | JavaThread* java_thread = NULL; |
duke@435 | 1526 | if (thread_id == 0) { |
duke@435 | 1527 | // current thread |
duke@435 | 1528 | return os::current_thread_cpu_time(user_sys_cpu_time != 0); |
duke@435 | 1529 | } else { |
duke@435 | 1530 | MutexLockerEx ml(Threads_lock); |
duke@435 | 1531 | java_thread = find_java_thread_from_id(thread_id); |
duke@435 | 1532 | if (java_thread != NULL) { |
duke@435 | 1533 | return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); |
duke@435 | 1534 | } |
duke@435 | 1535 | } |
duke@435 | 1536 | return -1; |
duke@435 | 1537 | JVM_END |
duke@435 | 1538 | |
phh@2423 | 1539 | // Gets an array containing the CPU times consumed by a set of threads |
phh@2423 | 1540 | // (in nanoseconds). Each element of the array is the CPU time for the |
phh@2423 | 1541 | // thread ID specified in the corresponding entry in the given array |
phh@2423 | 1542 | // of thread IDs; or -1 if the thread does not exist or has terminated. |
phh@2423 | 1543 | // If user_sys_cpu_time = true, the sum of user level and system CPU time |
phh@2423 | 1544 | // for the given thread is returned; otherwise, only user level CPU time |
phh@2423 | 1545 | // is returned. |
phh@2423 | 1546 | JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
phh@2423 | 1547 | jlongArray timeArray, |
phh@2423 | 1548 | jboolean user_sys_cpu_time)) |
phh@2423 | 1549 | // Check if threads is null |
phh@2423 | 1550 | if (ids == NULL || timeArray == NULL) { |
phh@2423 | 1551 | THROW(vmSymbols::java_lang_NullPointerException()); |
phh@2423 | 1552 | } |
phh@2423 | 1553 | |
phh@2423 | 1554 | ResourceMark rm(THREAD); |
phh@2423 | 1555 | typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
phh@2423 | 1556 | typeArrayHandle ids_ah(THREAD, ta); |
phh@2423 | 1557 | |
phh@2423 | 1558 | typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
phh@2423 | 1559 | typeArrayHandle timeArray_h(THREAD, tia); |
phh@2423 | 1560 | |
phh@2423 | 1561 | // validate the thread id array |
phh@2423 | 1562 | validate_thread_id_array(ids_ah, CHECK); |
phh@2423 | 1563 | |
phh@2423 | 1564 | // timeArray must be of the same length as the given array of thread IDs |
phh@2423 | 1565 | int num_threads = ids_ah->length(); |
phh@2423 | 1566 | if (num_threads != timeArray_h->length()) { |
phh@2423 | 1567 | THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
phh@2423 | 1568 | "The length of the given long array does not match the length of " |
phh@2423 | 1569 | "the given array of thread IDs"); |
phh@2423 | 1570 | } |
phh@2423 | 1571 | |
phh@2423 | 1572 | MutexLockerEx ml(Threads_lock); |
phh@2423 | 1573 | for (int i = 0; i < num_threads; i++) { |
phh@2423 | 1574 | JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
phh@2423 | 1575 | if (java_thread != NULL) { |
phh@2423 | 1576 | timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
phh@2423 | 1577 | user_sys_cpu_time != 0)); |
phh@2423 | 1578 | } |
phh@2423 | 1579 | } |
phh@2423 | 1580 | JVM_END |
phh@2423 | 1581 | |
duke@435 | 1582 | // Returns a String array of all VM global flag names |
duke@435 | 1583 | JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) |
duke@435 | 1584 | // last flag entry is always NULL, so subtract 1 |
duke@435 | 1585 | int nFlags = (int) Flag::numFlags - 1; |
duke@435 | 1586 | // allocate a temp array |
never@1577 | 1587 | objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
duke@435 | 1588 | nFlags, CHECK_0); |
duke@435 | 1589 | objArrayHandle flags_ah(THREAD, r); |
duke@435 | 1590 | int num_entries = 0; |
duke@435 | 1591 | for (int i = 0; i < nFlags; i++) { |
duke@435 | 1592 | Flag* flag = &Flag::flags[i]; |
ysr@785 | 1593 | // Exclude the locked (experimental, diagnostic) flags |
duke@435 | 1594 | if (flag->is_unlocked() || flag->is_unlocker()) { |
duke@435 | 1595 | Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); |
duke@435 | 1596 | flags_ah->obj_at_put(num_entries, s()); |
duke@435 | 1597 | num_entries++; |
duke@435 | 1598 | } |
duke@435 | 1599 | } |
duke@435 | 1600 | |
duke@435 | 1601 | if (num_entries < nFlags) { |
duke@435 | 1602 | // Return array of right length |
never@1577 | 1603 | objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
duke@435 | 1604 | for(int i = 0; i < num_entries; i++) { |
duke@435 | 1605 | res->obj_at_put(i, flags_ah->obj_at(i)); |
duke@435 | 1606 | } |
duke@435 | 1607 | return (jobjectArray)JNIHandles::make_local(env, res); |
duke@435 | 1608 | } |
duke@435 | 1609 | |
duke@435 | 1610 | return (jobjectArray)JNIHandles::make_local(env, flags_ah()); |
duke@435 | 1611 | JVM_END |
duke@435 | 1612 | |
phh@1502 | 1613 | // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
phh@1502 | 1614 | // can't be determined, true otherwise. If false is returned, then *global |
phh@1502 | 1615 | // will be incomplete and invalid. |
phh@1502 | 1616 | bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
duke@435 | 1617 | Handle flag_name; |
duke@435 | 1618 | if (name() == NULL) { |
phh@1502 | 1619 | flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
duke@435 | 1620 | } else { |
duke@435 | 1621 | flag_name = name; |
duke@435 | 1622 | } |
duke@435 | 1623 | global->name = (jstring)JNIHandles::make_local(env, flag_name()); |
duke@435 | 1624 | |
duke@435 | 1625 | if (flag->is_bool()) { |
duke@435 | 1626 | global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; |
duke@435 | 1627 | global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; |
duke@435 | 1628 | } else if (flag->is_intx()) { |
duke@435 | 1629 | global->value.j = (jlong)flag->get_intx(); |
duke@435 | 1630 | global->type = JMM_VMGLOBAL_TYPE_JLONG; |
duke@435 | 1631 | } else if (flag->is_uintx()) { |
duke@435 | 1632 | global->value.j = (jlong)flag->get_uintx(); |
duke@435 | 1633 | global->type = JMM_VMGLOBAL_TYPE_JLONG; |
phh@1502 | 1634 | } else if (flag->is_uint64_t()) { |
phh@1502 | 1635 | global->value.j = (jlong)flag->get_uint64_t(); |
phh@1502 | 1636 | global->type = JMM_VMGLOBAL_TYPE_JLONG; |
duke@435 | 1637 | } else if (flag->is_ccstr()) { |
phh@1502 | 1638 | Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
duke@435 | 1639 | global->value.l = (jobject)JNIHandles::make_local(env, str()); |
duke@435 | 1640 | global->type = JMM_VMGLOBAL_TYPE_JSTRING; |
phh@1502 | 1641 | } else { |
phh@1502 | 1642 | global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
phh@1502 | 1643 | return false; |
duke@435 | 1644 | } |
duke@435 | 1645 | |
duke@435 | 1646 | global->writeable = flag->is_writeable(); |
duke@435 | 1647 | global->external = flag->is_external(); |
duke@435 | 1648 | switch (flag->origin) { |
duke@435 | 1649 | case DEFAULT: |
duke@435 | 1650 | global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; |
duke@435 | 1651 | break; |
duke@435 | 1652 | case COMMAND_LINE: |
duke@435 | 1653 | global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; |
duke@435 | 1654 | break; |
duke@435 | 1655 | case ENVIRON_VAR: |
duke@435 | 1656 | global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; |
duke@435 | 1657 | break; |
duke@435 | 1658 | case CONFIG_FILE: |
duke@435 | 1659 | global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; |
duke@435 | 1660 | break; |
duke@435 | 1661 | case MANAGEMENT: |
duke@435 | 1662 | global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; |
duke@435 | 1663 | break; |
duke@435 | 1664 | case ERGONOMIC: |
duke@435 | 1665 | global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; |
duke@435 | 1666 | break; |
duke@435 | 1667 | default: |
duke@435 | 1668 | global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; |
duke@435 | 1669 | } |
phh@1502 | 1670 | |
phh@1502 | 1671 | return true; |
duke@435 | 1672 | } |
duke@435 | 1673 | |
duke@435 | 1674 | // Fill globals array of count length with jmmVMGlobal entries |
duke@435 | 1675 | // specified by names. If names == NULL, fill globals array |
duke@435 | 1676 | // with all Flags. Return value is number of entries |
duke@435 | 1677 | // created in globals. |
duke@435 | 1678 | // If a Flag with a given name in an array element does not |
duke@435 | 1679 | // exist, globals[i].name will be set to NULL. |
duke@435 | 1680 | JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, |
duke@435 | 1681 | jobjectArray names, |
duke@435 | 1682 | jmmVMGlobal *globals, |
duke@435 | 1683 | jint count)) |
duke@435 | 1684 | |
duke@435 | 1685 | |
duke@435 | 1686 | if (globals == NULL) { |
duke@435 | 1687 | THROW_(vmSymbols::java_lang_NullPointerException(), 0); |
duke@435 | 1688 | } |
duke@435 | 1689 | |
duke@435 | 1690 | ResourceMark rm(THREAD); |
duke@435 | 1691 | |
duke@435 | 1692 | if (names != NULL) { |
duke@435 | 1693 | // return the requested globals |
duke@435 | 1694 | objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); |
duke@435 | 1695 | objArrayHandle names_ah(THREAD, ta); |
duke@435 | 1696 | // Make sure we have a String array |
duke@435 | 1697 | klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); |
never@1577 | 1698 | if (element_klass != SystemDictionary::String_klass()) { |
duke@435 | 1699 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1700 | "Array element type is not String class", 0); |
duke@435 | 1701 | } |
duke@435 | 1702 | |
duke@435 | 1703 | int names_length = names_ah->length(); |
duke@435 | 1704 | int num_entries = 0; |
duke@435 | 1705 | for (int i = 0; i < names_length && i < count; i++) { |
duke@435 | 1706 | oop s = names_ah->obj_at(i); |
duke@435 | 1707 | if (s == NULL) { |
duke@435 | 1708 | THROW_(vmSymbols::java_lang_NullPointerException(), 0); |
duke@435 | 1709 | } |
duke@435 | 1710 | |
duke@435 | 1711 | Handle sh(THREAD, s); |
duke@435 | 1712 | char* str = java_lang_String::as_utf8_string(s); |
duke@435 | 1713 | Flag* flag = Flag::find_flag(str, strlen(str)); |
phh@1502 | 1714 | if (flag != NULL && |
phh@1502 | 1715 | add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
duke@435 | 1716 | num_entries++; |
duke@435 | 1717 | } else { |
duke@435 | 1718 | globals[i].name = NULL; |
duke@435 | 1719 | } |
duke@435 | 1720 | } |
duke@435 | 1721 | return num_entries; |
duke@435 | 1722 | } else { |
duke@435 | 1723 | // return all globals if names == NULL |
duke@435 | 1724 | |
duke@435 | 1725 | // last flag entry is always NULL, so subtract 1 |
duke@435 | 1726 | int nFlags = (int) Flag::numFlags - 1; |
duke@435 | 1727 | Handle null_h; |
duke@435 | 1728 | int num_entries = 0; |
duke@435 | 1729 | for (int i = 0; i < nFlags && num_entries < count; i++) { |
duke@435 | 1730 | Flag* flag = &Flag::flags[i]; |
ysr@785 | 1731 | // Exclude the locked (diagnostic, experimental) flags |
phh@1502 | 1732 | if ((flag->is_unlocked() || flag->is_unlocker()) && |
phh@1502 | 1733 | add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
duke@435 | 1734 | num_entries++; |
duke@435 | 1735 | } |
duke@435 | 1736 | } |
duke@435 | 1737 | return num_entries; |
duke@435 | 1738 | } |
duke@435 | 1739 | JVM_END |
duke@435 | 1740 | |
duke@435 | 1741 | JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) |
duke@435 | 1742 | ResourceMark rm(THREAD); |
duke@435 | 1743 | |
duke@435 | 1744 | oop fn = JNIHandles::resolve_external_guard(flag_name); |
duke@435 | 1745 | if (fn == NULL) { |
duke@435 | 1746 | THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
duke@435 | 1747 | "The flag name cannot be null."); |
duke@435 | 1748 | } |
duke@435 | 1749 | char* name = java_lang_String::as_utf8_string(fn); |
duke@435 | 1750 | Flag* flag = Flag::find_flag(name, strlen(name)); |
duke@435 | 1751 | if (flag == NULL) { |
duke@435 | 1752 | THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1753 | "Flag does not exist."); |
duke@435 | 1754 | } |
duke@435 | 1755 | if (!flag->is_writeable()) { |
duke@435 | 1756 | THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1757 | "This flag is not writeable."); |
duke@435 | 1758 | } |
duke@435 | 1759 | |
duke@435 | 1760 | bool succeed; |
duke@435 | 1761 | if (flag->is_bool()) { |
duke@435 | 1762 | bool bvalue = (new_value.z == JNI_TRUE ? true : false); |
duke@435 | 1763 | succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); |
duke@435 | 1764 | } else if (flag->is_intx()) { |
phh@1502 | 1765 | intx ivalue = (intx)new_value.j; |
duke@435 | 1766 | succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
duke@435 | 1767 | } else if (flag->is_uintx()) { |
phh@1502 | 1768 | uintx uvalue = (uintx)new_value.j; |
duke@435 | 1769 | succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
phh@1502 | 1770 | } else if (flag->is_uint64_t()) { |
phh@1502 | 1771 | uint64_t uvalue = (uint64_t)new_value.j; |
phh@1502 | 1772 | succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
duke@435 | 1773 | } else if (flag->is_ccstr()) { |
duke@435 | 1774 | oop str = JNIHandles::resolve_external_guard(new_value.l); |
duke@435 | 1775 | if (str == NULL) { |
duke@435 | 1776 | THROW(vmSymbols::java_lang_NullPointerException()); |
duke@435 | 1777 | } |
duke@435 | 1778 | ccstr svalue = java_lang_String::as_utf8_string(str); |
duke@435 | 1779 | succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); |
duke@435 | 1780 | } |
duke@435 | 1781 | assert(succeed, "Setting flag should succeed"); |
duke@435 | 1782 | JVM_END |
duke@435 | 1783 | |
duke@435 | 1784 | class ThreadTimesClosure: public ThreadClosure { |
duke@435 | 1785 | private: |
duke@435 | 1786 | objArrayOop _names; |
duke@435 | 1787 | typeArrayOop _times; |
duke@435 | 1788 | int _names_len; |
duke@435 | 1789 | int _times_len; |
duke@435 | 1790 | int _count; |
duke@435 | 1791 | |
duke@435 | 1792 | public: |
duke@435 | 1793 | ThreadTimesClosure(objArrayOop names, typeArrayOop times); |
duke@435 | 1794 | virtual void do_thread(Thread* thread); |
duke@435 | 1795 | int count() { return _count; } |
duke@435 | 1796 | }; |
duke@435 | 1797 | |
duke@435 | 1798 | ThreadTimesClosure::ThreadTimesClosure(objArrayOop names, |
duke@435 | 1799 | typeArrayOop times) { |
duke@435 | 1800 | assert(names != NULL, "names was NULL"); |
duke@435 | 1801 | assert(times != NULL, "times was NULL"); |
duke@435 | 1802 | _names = names; |
duke@435 | 1803 | _names_len = names->length(); |
duke@435 | 1804 | _times = times; |
duke@435 | 1805 | _times_len = times->length(); |
duke@435 | 1806 | _count = 0; |
duke@435 | 1807 | } |
duke@435 | 1808 | |
duke@435 | 1809 | void ThreadTimesClosure::do_thread(Thread* thread) { |
duke@435 | 1810 | Handle s; |
duke@435 | 1811 | assert(thread != NULL, "thread was NULL"); |
duke@435 | 1812 | |
duke@435 | 1813 | // exclude externally visible JavaThreads |
duke@435 | 1814 | if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { |
duke@435 | 1815 | return; |
duke@435 | 1816 | } |
duke@435 | 1817 | |
duke@435 | 1818 | if (_count >= _names_len || _count >= _times_len) { |
duke@435 | 1819 | // skip if the result array is not big enough |
duke@435 | 1820 | return; |
duke@435 | 1821 | } |
duke@435 | 1822 | |
duke@435 | 1823 | EXCEPTION_MARK; |
duke@435 | 1824 | |
duke@435 | 1825 | assert(thread->name() != NULL, "All threads should have a name"); |
duke@435 | 1826 | s = java_lang_String::create_from_str(thread->name(), CHECK); |
duke@435 | 1827 | _names->obj_at_put(_count, s()); |
duke@435 | 1828 | |
duke@435 | 1829 | _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? |
duke@435 | 1830 | os::thread_cpu_time(thread) : -1); |
duke@435 | 1831 | _count++; |
duke@435 | 1832 | } |
duke@435 | 1833 | |
duke@435 | 1834 | // Fills names with VM internal thread names and times with the corresponding |
duke@435 | 1835 | // CPU times. If names or times is NULL, a NullPointerException is thrown. |
duke@435 | 1836 | // If the element type of names is not String, an IllegalArgumentException is |
duke@435 | 1837 | // thrown. |
duke@435 | 1838 | // If an array is not large enough to hold all the entries, only the entries |
duke@435 | 1839 | // that fit will be returned. Return value is the number of VM internal |
duke@435 | 1840 | // threads entries. |
duke@435 | 1841 | JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, |
duke@435 | 1842 | jobjectArray names, |
duke@435 | 1843 | jlongArray times)) |
duke@435 | 1844 | if (names == NULL || times == NULL) { |
duke@435 | 1845 | THROW_(vmSymbols::java_lang_NullPointerException(), 0); |
duke@435 | 1846 | } |
duke@435 | 1847 | objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); |
duke@435 | 1848 | objArrayHandle names_ah(THREAD, na); |
duke@435 | 1849 | |
duke@435 | 1850 | // Make sure we have a String array |
duke@435 | 1851 | klassOop element_klass = objArrayKlass::cast(names_ah->klass())->element_klass(); |
never@1577 | 1852 | if (element_klass != SystemDictionary::String_klass()) { |
duke@435 | 1853 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1854 | "Array element type is not String class", 0); |
duke@435 | 1855 | } |
duke@435 | 1856 | |
duke@435 | 1857 | typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); |
duke@435 | 1858 | typeArrayHandle times_ah(THREAD, ta); |
duke@435 | 1859 | |
duke@435 | 1860 | ThreadTimesClosure ttc(names_ah(), times_ah()); |
duke@435 | 1861 | { |
duke@435 | 1862 | MutexLockerEx ml(Threads_lock); |
duke@435 | 1863 | Threads::threads_do(&ttc); |
duke@435 | 1864 | } |
duke@435 | 1865 | |
duke@435 | 1866 | return ttc.count(); |
duke@435 | 1867 | JVM_END |
duke@435 | 1868 | |
duke@435 | 1869 | static Handle find_deadlocks(bool object_monitors_only, TRAPS) { |
duke@435 | 1870 | ResourceMark rm(THREAD); |
duke@435 | 1871 | |
duke@435 | 1872 | VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); |
duke@435 | 1873 | VMThread::execute(&op); |
duke@435 | 1874 | |
duke@435 | 1875 | DeadlockCycle* deadlocks = op.result(); |
duke@435 | 1876 | if (deadlocks == NULL) { |
duke@435 | 1877 | // no deadlock found and return |
duke@435 | 1878 | return Handle(); |
duke@435 | 1879 | } |
duke@435 | 1880 | |
duke@435 | 1881 | int num_threads = 0; |
duke@435 | 1882 | DeadlockCycle* cycle; |
duke@435 | 1883 | for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { |
duke@435 | 1884 | num_threads += cycle->num_threads(); |
duke@435 | 1885 | } |
duke@435 | 1886 | |
never@1577 | 1887 | objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
duke@435 | 1888 | objArrayHandle threads_ah(THREAD, r); |
duke@435 | 1889 | |
duke@435 | 1890 | int index = 0; |
duke@435 | 1891 | for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { |
duke@435 | 1892 | GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); |
duke@435 | 1893 | int len = deadlock_threads->length(); |
duke@435 | 1894 | for (int i = 0; i < len; i++) { |
duke@435 | 1895 | threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); |
duke@435 | 1896 | index++; |
duke@435 | 1897 | } |
duke@435 | 1898 | } |
duke@435 | 1899 | return threads_ah; |
duke@435 | 1900 | } |
duke@435 | 1901 | |
duke@435 | 1902 | // Finds cycles of threads that are deadlocked involved in object monitors |
duke@435 | 1903 | // and JSR-166 synchronizers. |
duke@435 | 1904 | // Returns an array of Thread objects which are in deadlock, if any. |
duke@435 | 1905 | // Otherwise, returns NULL. |
duke@435 | 1906 | // |
duke@435 | 1907 | // Input parameter: |
duke@435 | 1908 | // object_monitors_only - if true, only check object monitors |
duke@435 | 1909 | // |
duke@435 | 1910 | JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) |
duke@435 | 1911 | Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); |
duke@435 | 1912 | return (jobjectArray) JNIHandles::make_local(env, result()); |
duke@435 | 1913 | JVM_END |
duke@435 | 1914 | |
duke@435 | 1915 | // Finds cycles of threads that are deadlocked on monitor locks |
duke@435 | 1916 | // Returns an array of Thread objects which are in deadlock, if any. |
duke@435 | 1917 | // Otherwise, returns NULL. |
duke@435 | 1918 | JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) |
duke@435 | 1919 | Handle result = find_deadlocks(true, CHECK_0); |
duke@435 | 1920 | return (jobjectArray) JNIHandles::make_local(env, result()); |
duke@435 | 1921 | JVM_END |
duke@435 | 1922 | |
duke@435 | 1923 | // Gets the information about GC extension attributes including |
duke@435 | 1924 | // the name of the attribute, its type, and a short description. |
duke@435 | 1925 | // |
duke@435 | 1926 | // Input parameters: |
duke@435 | 1927 | // mgr - GC memory manager |
duke@435 | 1928 | // info - caller allocated array of jmmExtAttributeInfo |
duke@435 | 1929 | // count - number of elements of the info array |
duke@435 | 1930 | // |
duke@435 | 1931 | // Returns the number of GC extension attributes filled in the info array; or |
duke@435 | 1932 | // -1 if info is not big enough |
duke@435 | 1933 | // |
duke@435 | 1934 | JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) |
duke@435 | 1935 | // All GC memory managers have 1 attribute (number of GC threads) |
duke@435 | 1936 | if (count == 0) { |
duke@435 | 1937 | return 0; |
duke@435 | 1938 | } |
duke@435 | 1939 | |
duke@435 | 1940 | if (info == NULL) { |
duke@435 | 1941 | THROW_(vmSymbols::java_lang_NullPointerException(), 0); |
duke@435 | 1942 | } |
duke@435 | 1943 | |
duke@435 | 1944 | info[0].name = "GcThreadCount"; |
duke@435 | 1945 | info[0].type = 'I'; |
duke@435 | 1946 | info[0].description = "Number of GC threads"; |
duke@435 | 1947 | return 1; |
duke@435 | 1948 | JVM_END |
duke@435 | 1949 | |
duke@435 | 1950 | // verify the given array is an array of java/lang/management/MemoryUsage objects |
duke@435 | 1951 | // of a given length and return the objArrayOop |
duke@435 | 1952 | static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { |
duke@435 | 1953 | if (array == NULL) { |
duke@435 | 1954 | THROW_(vmSymbols::java_lang_NullPointerException(), 0); |
duke@435 | 1955 | } |
duke@435 | 1956 | |
duke@435 | 1957 | objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); |
duke@435 | 1958 | objArrayHandle array_h(THREAD, oa); |
duke@435 | 1959 | |
duke@435 | 1960 | // array must be of the given length |
duke@435 | 1961 | if (length != array_h->length()) { |
duke@435 | 1962 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1963 | "The length of the given MemoryUsage array does not match the number of memory pools.", 0); |
duke@435 | 1964 | } |
duke@435 | 1965 | |
duke@435 | 1966 | // check if the element of array is of type MemoryUsage class |
duke@435 | 1967 | klassOop usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); |
duke@435 | 1968 | klassOop element_klass = objArrayKlass::cast(array_h->klass())->element_klass(); |
duke@435 | 1969 | if (element_klass != usage_klass) { |
duke@435 | 1970 | THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
duke@435 | 1971 | "The element type is not MemoryUsage class", 0); |
duke@435 | 1972 | } |
duke@435 | 1973 | |
duke@435 | 1974 | return array_h(); |
duke@435 | 1975 | } |
duke@435 | 1976 | |
duke@435 | 1977 | // Gets the statistics of the last GC of a given GC memory manager. |
duke@435 | 1978 | // Input parameters: |
duke@435 | 1979 | // obj - GarbageCollectorMXBean object |
duke@435 | 1980 | // gc_stat - caller allocated jmmGCStat where: |
duke@435 | 1981 | // a. before_gc_usage - array of MemoryUsage objects |
duke@435 | 1982 | // b. after_gc_usage - array of MemoryUsage objects |
duke@435 | 1983 | // c. gc_ext_attributes_values_size is set to the |
duke@435 | 1984 | // gc_ext_attribute_values array allocated |
duke@435 | 1985 | // d. gc_ext_attribute_values is a caller allocated array of jvalue. |
duke@435 | 1986 | // |
duke@435 | 1987 | // On return, |
duke@435 | 1988 | // gc_index == 0 indicates no GC statistics available |
duke@435 | 1989 | // |
duke@435 | 1990 | // before_gc_usage and after_gc_usage - filled with per memory pool |
duke@435 | 1991 | // before and after GC usage in the same order as the memory pools |
duke@435 | 1992 | // returned by GetMemoryPools for a given GC memory manager. |
duke@435 | 1993 | // num_gc_ext_attributes indicates the number of elements in |
duke@435 | 1994 | // the gc_ext_attribute_values array is filled; or |
duke@435 | 1995 | // -1 if the gc_ext_attributes_values array is not big enough |
duke@435 | 1996 | // |
duke@435 | 1997 | JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) |
duke@435 | 1998 | ResourceMark rm(THREAD); |
duke@435 | 1999 | |
duke@435 | 2000 | if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { |
duke@435 | 2001 | THROW(vmSymbols::java_lang_NullPointerException()); |
duke@435 | 2002 | } |
duke@435 | 2003 | |
duke@435 | 2004 | // Get the GCMemoryManager |
duke@435 | 2005 | GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
duke@435 | 2006 | |
duke@435 | 2007 | // Make a copy of the last GC statistics |
duke@435 | 2008 | // GC may occur while constructing the last GC information |
duke@435 | 2009 | int num_pools = MemoryService::num_memory_pools(); |
duke@435 | 2010 | GCStatInfo* stat = new GCStatInfo(num_pools); |
kevinw@2058 | 2011 | if (mgr->get_last_gc_stat(stat) == 0) { |
kevinw@2058 | 2012 | gc_stat->gc_index = 0; |
kevinw@2058 | 2013 | return; |
kevinw@2058 | 2014 | } |
duke@435 | 2015 | |
duke@435 | 2016 | gc_stat->gc_index = stat->gc_index(); |
duke@435 | 2017 | gc_stat->start_time = Management::ticks_to_ms(stat->start_time()); |
duke@435 | 2018 | gc_stat->end_time = Management::ticks_to_ms(stat->end_time()); |
duke@435 | 2019 | |
duke@435 | 2020 | // Current implementation does not have GC extension attributes |
duke@435 | 2021 | gc_stat->num_gc_ext_attributes = 0; |
duke@435 | 2022 | |
duke@435 | 2023 | // Fill the arrays of MemoryUsage objects with before and after GC |
duke@435 | 2024 | // per pool memory usage |
duke@435 | 2025 | objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, |
duke@435 | 2026 | num_pools, |
duke@435 | 2027 | CHECK); |
duke@435 | 2028 | objArrayHandle usage_before_gc_ah(THREAD, bu); |
duke@435 | 2029 | |
duke@435 | 2030 | objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, |
duke@435 | 2031 | num_pools, |
duke@435 | 2032 | CHECK); |
duke@435 | 2033 | objArrayHandle usage_after_gc_ah(THREAD, au); |
duke@435 | 2034 | |
duke@435 | 2035 | for (int i = 0; i < num_pools; i++) { |
duke@435 | 2036 | Handle before_usage = MemoryService::create_MemoryUsage_obj(stat->before_gc_usage_for_pool(i), CHECK); |
duke@435 | 2037 | Handle after_usage; |
duke@435 | 2038 | |
duke@435 | 2039 | MemoryUsage u = stat->after_gc_usage_for_pool(i); |
duke@435 | 2040 | if (u.max_size() == 0 && u.used() > 0) { |
duke@435 | 2041 | // If max size == 0, this pool is a survivor space. |
duke@435 | 2042 | // Set max size = -1 since the pools will be swapped after GC. |
duke@435 | 2043 | MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); |
duke@435 | 2044 | after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); |
duke@435 | 2045 | } else { |
duke@435 | 2046 | after_usage = MemoryService::create_MemoryUsage_obj(stat->after_gc_usage_for_pool(i), CHECK); |
duke@435 | 2047 | } |
duke@435 | 2048 | usage_before_gc_ah->obj_at_put(i, before_usage()); |
duke@435 | 2049 | usage_after_gc_ah->obj_at_put(i, after_usage()); |
duke@435 | 2050 | } |
duke@435 | 2051 | |
duke@435 | 2052 | if (gc_stat->gc_ext_attribute_values_size > 0) { |
duke@435 | 2053 | // Current implementation only has 1 attribute (number of GC threads) |
duke@435 | 2054 | // The type is 'I' |
duke@435 | 2055 | gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); |
duke@435 | 2056 | } |
duke@435 | 2057 | JVM_END |
duke@435 | 2058 | |
duke@435 | 2059 | // Dump heap - Returns 0 if succeeds. |
duke@435 | 2060 | JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) |
duke@435 | 2061 | #ifndef SERVICES_KERNEL |
duke@435 | 2062 | ResourceMark rm(THREAD); |
duke@435 | 2063 | oop on = JNIHandles::resolve_external_guard(outputfile); |
duke@435 | 2064 | if (on == NULL) { |
duke@435 | 2065 | THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
duke@435 | 2066 | "Output file name cannot be null.", -1); |
duke@435 | 2067 | } |
duke@435 | 2068 | char* name = java_lang_String::as_utf8_string(on); |
duke@435 | 2069 | if (name == NULL) { |
duke@435 | 2070 | THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
duke@435 | 2071 | "Output file name cannot be null.", -1); |
duke@435 | 2072 | } |
duke@435 | 2073 | HeapDumper dumper(live ? true : false); |
duke@435 | 2074 | if (dumper.dump(name) != 0) { |
duke@435 | 2075 | const char* errmsg = dumper.error_as_C_string(); |
duke@435 | 2076 | THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); |
duke@435 | 2077 | } |
duke@435 | 2078 | return 0; |
duke@435 | 2079 | #else // SERVICES_KERNEL |
duke@435 | 2080 | return -1; |
duke@435 | 2081 | #endif // SERVICES_KERNEL |
duke@435 | 2082 | JVM_END |
duke@435 | 2083 | |
duke@435 | 2084 | jlong Management::ticks_to_ms(jlong ticks) { |
duke@435 | 2085 | assert(os::elapsed_frequency() > 0, "Must be non-zero"); |
duke@435 | 2086 | return (jlong)(((double)ticks / (double)os::elapsed_frequency()) |
duke@435 | 2087 | * (double)1000.0); |
duke@435 | 2088 | } |
duke@435 | 2089 | |
duke@435 | 2090 | const struct jmmInterface_1_ jmm_interface = { |
duke@435 | 2091 | NULL, |
duke@435 | 2092 | NULL, |
duke@435 | 2093 | jmm_GetVersion, |
duke@435 | 2094 | jmm_GetOptionalSupport, |
duke@435 | 2095 | jmm_GetInputArguments, |
duke@435 | 2096 | jmm_GetThreadInfo, |
duke@435 | 2097 | jmm_GetInputArgumentArray, |
duke@435 | 2098 | jmm_GetMemoryPools, |
duke@435 | 2099 | jmm_GetMemoryManagers, |
duke@435 | 2100 | jmm_GetMemoryPoolUsage, |
duke@435 | 2101 | jmm_GetPeakMemoryPoolUsage, |
phh@2423 | 2102 | jmm_GetThreadAllocatedMemory, |
duke@435 | 2103 | jmm_GetMemoryUsage, |
duke@435 | 2104 | jmm_GetLongAttribute, |
duke@435 | 2105 | jmm_GetBoolAttribute, |
duke@435 | 2106 | jmm_SetBoolAttribute, |
duke@435 | 2107 | jmm_GetLongAttributes, |
duke@435 | 2108 | jmm_FindMonitorDeadlockedThreads, |
duke@435 | 2109 | jmm_GetThreadCpuTime, |
duke@435 | 2110 | jmm_GetVMGlobalNames, |
duke@435 | 2111 | jmm_GetVMGlobals, |
duke@435 | 2112 | jmm_GetInternalThreadTimes, |
duke@435 | 2113 | jmm_ResetStatistic, |
duke@435 | 2114 | jmm_SetPoolSensor, |
duke@435 | 2115 | jmm_SetPoolThreshold, |
duke@435 | 2116 | jmm_GetPoolCollectionUsage, |
duke@435 | 2117 | jmm_GetGCExtAttributeInfo, |
duke@435 | 2118 | jmm_GetLastGCStat, |
duke@435 | 2119 | jmm_GetThreadCpuTimeWithKind, |
phh@2423 | 2120 | jmm_GetThreadCpuTimesWithKind, |
duke@435 | 2121 | jmm_DumpHeap0, |
duke@435 | 2122 | jmm_FindDeadlockedThreads, |
duke@435 | 2123 | jmm_SetVMGlobal, |
duke@435 | 2124 | NULL, |
duke@435 | 2125 | jmm_DumpThreads |
duke@435 | 2126 | }; |
duke@435 | 2127 | |
duke@435 | 2128 | void* Management::get_jmm_interface(int version) { |
duke@435 | 2129 | if (version == JMM_VERSION_1_0) { |
duke@435 | 2130 | return (void*) &jmm_interface; |
duke@435 | 2131 | } |
duke@435 | 2132 | return NULL; |
duke@435 | 2133 | } |