Mercurial > hg > graal-compiler
annotate src/share/vm/services/management.cpp @ 10134:a527ddd44e07
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Reviewed-by: dholmes, rbackman
Contributed-by: peter.allwin@oracle.com
| author | mgronlun |
|---|---|
| date | Sat, 20 Apr 2013 19:02:11 +0200 |
| parents | db9981fd3124 |
| children | 31a4e55f8c9d |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "compiler/compileBroker.hpp" | |
| 28 #include "memory/iterator.hpp" | |
| 29 #include "memory/oopFactory.hpp" | |
| 30 #include "memory/resourceArea.hpp" | |
| 31 #include "oops/klass.hpp" | |
| 32 #include "oops/objArrayKlass.hpp" | |
| 33 #include "oops/oop.inline.hpp" | |
| 34 #include "runtime/arguments.hpp" | |
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35 #include "runtime/globals.hpp" |
| 1972 | 36 #include "runtime/handles.inline.hpp" |
| 37 #include "runtime/interfaceSupport.hpp" | |
| 38 #include "runtime/javaCalls.hpp" | |
| 39 #include "runtime/jniHandles.hpp" | |
| 40 #include "runtime/os.hpp" | |
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41 #include "runtime/serviceThread.hpp" |
| 1972 | 42 #include "services/classLoadingService.hpp" |
| 4133 | 43 #include "services/diagnosticCommand.hpp" |
| 44 #include "services/diagnosticFramework.hpp" | |
| 1972 | 45 #include "services/heapDumper.hpp" |
| 4133 | 46 #include "services/jmm.h" |
| 1972 | 47 #include "services/lowMemoryDetector.hpp" |
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48 #include "services/gcNotifier.hpp" |
| 6197 | 49 #include "services/nmtDCmd.hpp" |
| 1972 | 50 #include "services/management.hpp" |
| 51 #include "services/memoryManager.hpp" | |
| 52 #include "services/memoryPool.hpp" | |
| 53 #include "services/memoryService.hpp" | |
| 54 #include "services/runtimeService.hpp" | |
| 55 #include "services/threadService.hpp" | |
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56 #include "utilities/macros.hpp" |
| 0 | 57 |
| 58 PerfVariable* Management::_begin_vm_creation_time = NULL; | |
| 59 PerfVariable* Management::_end_vm_creation_time = NULL; | |
| 60 PerfVariable* Management::_vm_init_done_time = NULL; | |
| 61 | |
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62 Klass* Management::_sensor_klass = NULL; |
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63 Klass* Management::_threadInfo_klass = NULL; |
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64 Klass* Management::_memoryUsage_klass = NULL; |
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65 Klass* Management::_memoryPoolMXBean_klass = NULL; |
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66 Klass* Management::_memoryManagerMXBean_klass = NULL; |
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67 Klass* Management::_garbageCollectorMXBean_klass = NULL; |
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68 Klass* Management::_managementFactory_klass = NULL; |
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69 Klass* Management::_garbageCollectorImpl_klass = NULL; |
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70 Klass* Management::_gcInfo_klass = NULL; |
| 0 | 71 |
| 72 jmmOptionalSupport Management::_optional_support = {0}; | |
| 73 TimeStamp Management::_stamp; | |
| 74 | |
| 75 void management_init() { | |
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76 #if INCLUDE_MANAGEMENT |
| 0 | 77 Management::init(); |
| 78 ThreadService::init(); | |
| 79 RuntimeService::init(); | |
| 80 ClassLoadingService::init(); | |
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81 #else |
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82 ThreadService::init(); |
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83 // Make sure the VM version is initialized |
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84 // This is normally called by RuntimeService::init(). |
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85 // Since that is conditionalized out, we need to call it here. |
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86 Abstract_VM_Version::initialize(); |
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87 #endif // INCLUDE_MANAGEMENT |
| 0 | 88 } |
| 89 | |
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90 #if INCLUDE_MANAGEMENT |
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91 |
| 0 | 92 void Management::init() { |
| 93 EXCEPTION_MARK; | |
| 94 | |
| 95 // These counters are for java.lang.management API support. | |
| 96 // They are created even if -XX:-UsePerfData is set and in | |
| 97 // that case, they will be allocated on C heap. | |
| 98 | |
| 99 _begin_vm_creation_time = | |
| 100 PerfDataManager::create_variable(SUN_RT, "createVmBeginTime", | |
| 101 PerfData::U_None, CHECK); | |
| 102 | |
| 103 _end_vm_creation_time = | |
| 104 PerfDataManager::create_variable(SUN_RT, "createVmEndTime", | |
| 105 PerfData::U_None, CHECK); | |
| 106 | |
| 107 _vm_init_done_time = | |
| 108 PerfDataManager::create_variable(SUN_RT, "vmInitDoneTime", | |
| 109 PerfData::U_None, CHECK); | |
| 110 | |
| 111 // Initialize optional support | |
| 112 _optional_support.isLowMemoryDetectionSupported = 1; | |
| 113 _optional_support.isCompilationTimeMonitoringSupported = 1; | |
| 114 _optional_support.isThreadContentionMonitoringSupported = 1; | |
| 115 | |
| 116 if (os::is_thread_cpu_time_supported()) { | |
| 117 _optional_support.isCurrentThreadCpuTimeSupported = 1; | |
| 118 _optional_support.isOtherThreadCpuTimeSupported = 1; | |
| 119 } else { | |
| 120 _optional_support.isCurrentThreadCpuTimeSupported = 0; | |
| 121 _optional_support.isOtherThreadCpuTimeSupported = 0; | |
| 122 } | |
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123 |
| 0 | 124 _optional_support.isBootClassPathSupported = 1; |
| 125 _optional_support.isObjectMonitorUsageSupported = 1; | |
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126 #if INCLUDE_SERVICES |
| 0 | 127 // This depends on the heap inspector |
| 128 _optional_support.isSynchronizerUsageSupported = 1; | |
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129 #endif // INCLUDE_SERVICES |
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130 _optional_support.isThreadAllocatedMemorySupported = 1; |
| 4133 | 131 |
| 4773 | 132 // Registration of the diagnostic commands |
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133 DCmdRegistrant::register_dcmds(); |
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134 DCmdRegistrant::register_dcmds_ext(); |
| 6197 | 135 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(true, false)); |
| 0 | 136 } |
| 137 | |
| 138 void Management::initialize(TRAPS) { | |
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139 // Start the service thread |
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140 ServiceThread::initialize(); |
| 0 | 141 |
| 142 if (ManagementServer) { | |
| 143 ResourceMark rm(THREAD); | |
| 144 HandleMark hm(THREAD); | |
| 145 | |
| 146 // Load and initialize the sun.management.Agent class | |
| 147 // invoke startAgent method to start the management server | |
| 148 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
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149 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), |
| 0 | 150 loader, |
| 151 Handle(), | |
| 152 true, | |
| 153 CHECK); | |
| 154 instanceKlassHandle ik (THREAD, k); | |
| 155 | |
| 156 JavaValue result(T_VOID); | |
| 157 JavaCalls::call_static(&result, | |
| 158 ik, | |
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159 vmSymbols::startAgent_name(), |
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160 vmSymbols::void_method_signature(), |
| 0 | 161 CHECK); |
| 162 } | |
| 163 } | |
| 164 | |
| 165 void Management::get_optional_support(jmmOptionalSupport* support) { | |
| 166 memcpy(support, &_optional_support, sizeof(jmmOptionalSupport)); | |
| 167 } | |
| 168 | |
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169 Klass* Management::load_and_initialize_klass(Symbol* sh, TRAPS) { |
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170 Klass* k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL); |
| 0 | 171 instanceKlassHandle ik (THREAD, k); |
| 172 if (ik->should_be_initialized()) { | |
| 173 ik->initialize(CHECK_NULL); | |
| 174 } | |
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175 // If these classes change to not be owned by the boot loader, they need |
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176 // to be walked to keep their class loader alive in oops_do. |
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177 assert(ik->class_loader() == NULL, "need to follow in oops_do"); |
| 0 | 178 return ik(); |
| 179 } | |
| 180 | |
| 181 void Management::record_vm_startup_time(jlong begin, jlong duration) { | |
| 182 // if the performance counter is not initialized, | |
| 183 // then vm initialization failed; simply return. | |
| 184 if (_begin_vm_creation_time == NULL) return; | |
| 185 | |
| 186 _begin_vm_creation_time->set_value(begin); | |
| 187 _end_vm_creation_time->set_value(begin + duration); | |
| 188 PerfMemory::set_accessible(true); | |
| 189 } | |
| 190 | |
| 191 jlong Management::timestamp() { | |
| 192 TimeStamp t; | |
| 193 t.update(); | |
| 194 return t.ticks() - _stamp.ticks(); | |
| 195 } | |
| 196 | |
| 197 void Management::oops_do(OopClosure* f) { | |
| 198 MemoryService::oops_do(f); | |
| 199 ThreadService::oops_do(f); | |
| 200 } | |
| 201 | |
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202 Klass* Management::java_lang_management_ThreadInfo_klass(TRAPS) { |
| 0 | 203 if (_threadInfo_klass == NULL) { |
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204 _threadInfo_klass = load_and_initialize_klass(vmSymbols::java_lang_management_ThreadInfo(), CHECK_NULL); |
| 0 | 205 } |
| 206 return _threadInfo_klass; | |
| 207 } | |
| 208 | |
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209 Klass* Management::java_lang_management_MemoryUsage_klass(TRAPS) { |
| 0 | 210 if (_memoryUsage_klass == NULL) { |
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211 _memoryUsage_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryUsage(), CHECK_NULL); |
| 0 | 212 } |
| 213 return _memoryUsage_klass; | |
| 214 } | |
| 215 | |
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216 Klass* Management::java_lang_management_MemoryPoolMXBean_klass(TRAPS) { |
| 0 | 217 if (_memoryPoolMXBean_klass == NULL) { |
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218 _memoryPoolMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryPoolMXBean(), CHECK_NULL); |
| 0 | 219 } |
| 220 return _memoryPoolMXBean_klass; | |
| 221 } | |
| 222 | |
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223 Klass* Management::java_lang_management_MemoryManagerMXBean_klass(TRAPS) { |
| 0 | 224 if (_memoryManagerMXBean_klass == NULL) { |
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225 _memoryManagerMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_MemoryManagerMXBean(), CHECK_NULL); |
| 0 | 226 } |
| 227 return _memoryManagerMXBean_klass; | |
| 228 } | |
| 229 | |
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230 Klass* Management::java_lang_management_GarbageCollectorMXBean_klass(TRAPS) { |
| 0 | 231 if (_garbageCollectorMXBean_klass == NULL) { |
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232 _garbageCollectorMXBean_klass = load_and_initialize_klass(vmSymbols::java_lang_management_GarbageCollectorMXBean(), CHECK_NULL); |
| 0 | 233 } |
| 234 return _garbageCollectorMXBean_klass; | |
| 235 } | |
| 236 | |
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237 Klass* Management::sun_management_Sensor_klass(TRAPS) { |
| 0 | 238 if (_sensor_klass == NULL) { |
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239 _sensor_klass = load_and_initialize_klass(vmSymbols::sun_management_Sensor(), CHECK_NULL); |
| 0 | 240 } |
| 241 return _sensor_klass; | |
| 242 } | |
| 243 | |
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244 Klass* Management::sun_management_ManagementFactory_klass(TRAPS) { |
| 0 | 245 if (_managementFactory_klass == NULL) { |
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246 _managementFactory_klass = load_and_initialize_klass(vmSymbols::sun_management_ManagementFactory(), CHECK_NULL); |
| 0 | 247 } |
| 248 return _managementFactory_klass; | |
| 249 } | |
| 250 | |
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251 Klass* Management::sun_management_GarbageCollectorImpl_klass(TRAPS) { |
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252 if (_garbageCollectorImpl_klass == NULL) { |
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253 _garbageCollectorImpl_klass = load_and_initialize_klass(vmSymbols::sun_management_GarbageCollectorImpl(), CHECK_NULL); |
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254 } |
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255 return _garbageCollectorImpl_klass; |
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256 } |
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257 |
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258 Klass* Management::com_sun_management_GcInfo_klass(TRAPS) { |
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259 if (_gcInfo_klass == NULL) { |
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260 _gcInfo_klass = load_and_initialize_klass(vmSymbols::com_sun_management_GcInfo(), CHECK_NULL); |
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261 } |
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262 return _gcInfo_klass; |
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263 } |
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264 |
| 0 | 265 static void initialize_ThreadInfo_constructor_arguments(JavaCallArguments* args, ThreadSnapshot* snapshot, TRAPS) { |
| 266 Handle snapshot_thread(THREAD, snapshot->threadObj()); | |
| 267 | |
| 268 jlong contended_time; | |
| 269 jlong waited_time; | |
| 270 if (ThreadService::is_thread_monitoring_contention()) { | |
| 271 contended_time = Management::ticks_to_ms(snapshot->contended_enter_ticks()); | |
| 272 waited_time = Management::ticks_to_ms(snapshot->monitor_wait_ticks() + snapshot->sleep_ticks()); | |
| 273 } else { | |
| 274 // set them to -1 if thread contention monitoring is disabled. | |
| 275 contended_time = max_julong; | |
| 276 waited_time = max_julong; | |
| 277 } | |
| 278 | |
| 279 int thread_status = snapshot->thread_status(); | |
| 280 assert((thread_status & JMM_THREAD_STATE_FLAG_MASK) == 0, "Flags already set in thread_status in Thread object"); | |
| 281 if (snapshot->is_ext_suspended()) { | |
| 282 thread_status |= JMM_THREAD_STATE_FLAG_SUSPENDED; | |
| 283 } | |
| 284 if (snapshot->is_in_native()) { | |
| 285 thread_status |= JMM_THREAD_STATE_FLAG_NATIVE; | |
| 286 } | |
| 287 | |
| 288 ThreadStackTrace* st = snapshot->get_stack_trace(); | |
| 289 Handle stacktrace_h; | |
| 290 if (st != NULL) { | |
| 291 stacktrace_h = st->allocate_fill_stack_trace_element_array(CHECK); | |
| 292 } else { | |
| 293 stacktrace_h = Handle(); | |
| 294 } | |
| 295 | |
| 296 args->push_oop(snapshot_thread); | |
| 297 args->push_int(thread_status); | |
| 298 args->push_oop(Handle(THREAD, snapshot->blocker_object())); | |
| 299 args->push_oop(Handle(THREAD, snapshot->blocker_object_owner())); | |
| 300 args->push_long(snapshot->contended_enter_count()); | |
| 301 args->push_long(contended_time); | |
| 302 args->push_long(snapshot->monitor_wait_count() + snapshot->sleep_count()); | |
| 303 args->push_long(waited_time); | |
| 304 args->push_oop(stacktrace_h); | |
| 305 } | |
| 306 | |
| 307 // Helper function to construct a ThreadInfo object | |
| 308 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS) { | |
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309 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
| 0 | 310 instanceKlassHandle ik (THREAD, k); |
| 311 | |
| 312 JavaValue result(T_VOID); | |
| 313 JavaCallArguments args(14); | |
| 314 | |
| 315 // First allocate a ThreadObj object and | |
| 316 // push the receiver as the first argument | |
| 317 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
| 318 args.push_oop(element); | |
| 319 | |
| 320 // initialize the arguments for the ThreadInfo constructor | |
| 321 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
| 322 | |
| 323 // Call ThreadInfo constructor with no locked monitors and synchronizers | |
| 324 JavaCalls::call_special(&result, | |
| 325 ik, | |
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326 vmSymbols::object_initializer_name(), |
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327 vmSymbols::java_lang_management_ThreadInfo_constructor_signature(), |
| 0 | 328 &args, |
| 329 CHECK_NULL); | |
| 330 | |
| 331 return (instanceOop) element(); | |
| 332 } | |
| 333 | |
| 334 instanceOop Management::create_thread_info_instance(ThreadSnapshot* snapshot, | |
| 335 objArrayHandle monitors_array, | |
| 336 typeArrayHandle depths_array, | |
| 337 objArrayHandle synchronizers_array, | |
| 338 TRAPS) { | |
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339 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
| 0 | 340 instanceKlassHandle ik (THREAD, k); |
| 341 | |
| 342 JavaValue result(T_VOID); | |
| 343 JavaCallArguments args(17); | |
| 344 | |
| 345 // First allocate a ThreadObj object and | |
| 346 // push the receiver as the first argument | |
| 347 Handle element = ik->allocate_instance_handle(CHECK_NULL); | |
| 348 args.push_oop(element); | |
| 349 | |
| 350 // initialize the arguments for the ThreadInfo constructor | |
| 351 initialize_ThreadInfo_constructor_arguments(&args, snapshot, CHECK_NULL); | |
| 352 | |
| 353 // push the locked monitors and synchronizers in the arguments | |
| 354 args.push_oop(monitors_array); | |
| 355 args.push_oop(depths_array); | |
| 356 args.push_oop(synchronizers_array); | |
| 357 | |
| 358 // Call ThreadInfo constructor with locked monitors and synchronizers | |
| 359 JavaCalls::call_special(&result, | |
| 360 ik, | |
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361 vmSymbols::object_initializer_name(), |
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362 vmSymbols::java_lang_management_ThreadInfo_with_locks_constructor_signature(), |
| 0 | 363 &args, |
| 364 CHECK_NULL); | |
| 365 | |
| 366 return (instanceOop) element(); | |
| 367 } | |
| 368 | |
| 369 // Helper functions | |
| 370 static JavaThread* find_java_thread_from_id(jlong thread_id) { | |
| 371 assert(Threads_lock->owned_by_self(), "Must hold Threads_lock"); | |
| 372 | |
| 373 JavaThread* java_thread = NULL; | |
| 374 // Sequential search for now. Need to do better optimization later. | |
| 375 for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) { | |
| 376 oop tobj = thread->threadObj(); | |
| 377 if (!thread->is_exiting() && | |
| 378 tobj != NULL && | |
| 379 thread_id == java_lang_Thread::thread_id(tobj)) { | |
| 380 java_thread = thread; | |
| 381 break; | |
| 382 } | |
| 383 } | |
| 384 return java_thread; | |
| 385 } | |
| 386 | |
| 387 static GCMemoryManager* get_gc_memory_manager_from_jobject(jobject mgr, TRAPS) { | |
| 388 if (mgr == NULL) { | |
| 389 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 390 } | |
| 391 oop mgr_obj = JNIHandles::resolve(mgr); | |
| 392 instanceHandle h(THREAD, (instanceOop) mgr_obj); | |
| 393 | |
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394 Klass* k = Management::java_lang_management_GarbageCollectorMXBean_klass(CHECK_NULL); |
| 0 | 395 if (!h->is_a(k)) { |
| 396 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 397 "the object is not an instance of java.lang.management.GarbageCollectorMXBean class", | |
| 398 NULL); | |
| 399 } | |
| 400 | |
| 401 MemoryManager* gc = MemoryService::get_memory_manager(h); | |
| 402 if (gc == NULL || !gc->is_gc_memory_manager()) { | |
| 403 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 404 "Invalid GC memory manager", | |
| 405 NULL); | |
| 406 } | |
| 407 return (GCMemoryManager*) gc; | |
| 408 } | |
| 409 | |
| 410 static MemoryPool* get_memory_pool_from_jobject(jobject obj, TRAPS) { | |
| 411 if (obj == NULL) { | |
| 412 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 413 } | |
| 414 | |
| 415 oop pool_obj = JNIHandles::resolve(obj); | |
| 416 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
| 417 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
| 418 | |
| 419 return MemoryService::get_memory_pool(ph); | |
| 420 } | |
| 421 | |
| 422 static void validate_thread_id_array(typeArrayHandle ids_ah, TRAPS) { | |
| 423 int num_threads = ids_ah->length(); | |
| 424 | |
| 425 // Validate input thread IDs | |
| 426 int i = 0; | |
| 427 for (i = 0; i < num_threads; i++) { | |
| 428 jlong tid = ids_ah->long_at(i); | |
| 429 if (tid <= 0) { | |
| 430 // throw exception if invalid thread id. | |
| 431 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 432 "Invalid thread ID entry"); | |
| 433 } | |
| 434 } | |
| 435 } | |
| 436 | |
| 437 static void validate_thread_info_array(objArrayHandle infoArray_h, TRAPS) { | |
| 438 // check if the element of infoArray is of type ThreadInfo class | |
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439 Klass* threadinfo_klass = Management::java_lang_management_ThreadInfo_klass(CHECK); |
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440 Klass* element_klass = ObjArrayKlass::cast(infoArray_h->klass())->element_klass(); |
| 0 | 441 if (element_klass != threadinfo_klass) { |
| 442 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 443 "infoArray element type is not ThreadInfo class"); | |
| 444 } | |
| 445 } | |
| 446 | |
| 447 | |
| 448 static MemoryManager* get_memory_manager_from_jobject(jobject obj, TRAPS) { | |
| 449 if (obj == NULL) { | |
| 450 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 451 } | |
| 452 | |
| 453 oop mgr_obj = JNIHandles::resolve(obj); | |
| 454 assert(mgr_obj->is_instance(), "Should be an instanceOop"); | |
| 455 instanceHandle mh(THREAD, (instanceOop) mgr_obj); | |
| 456 | |
| 457 return MemoryService::get_memory_manager(mh); | |
| 458 } | |
| 459 | |
| 460 // Returns a version string and sets major and minor version if | |
| 461 // the input parameters are non-null. | |
| 462 JVM_LEAF(jint, jmm_GetVersion(JNIEnv *env)) | |
| 463 return JMM_VERSION; | |
| 464 JVM_END | |
| 465 | |
| 466 // Gets the list of VM monitoring and management optional supports | |
| 467 // Returns 0 if succeeded; otherwise returns non-zero. | |
| 468 JVM_LEAF(jint, jmm_GetOptionalSupport(JNIEnv *env, jmmOptionalSupport* support)) | |
| 469 if (support == NULL) { | |
| 470 return -1; | |
| 471 } | |
| 472 Management::get_optional_support(support); | |
| 473 return 0; | |
| 474 JVM_END | |
| 475 | |
| 476 // Returns a java.lang.String object containing the input arguments to the VM. | |
| 477 JVM_ENTRY(jobject, jmm_GetInputArguments(JNIEnv *env)) | |
| 478 ResourceMark rm(THREAD); | |
| 479 | |
| 480 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
| 481 return NULL; | |
| 482 } | |
| 483 | |
| 484 char** vm_flags = Arguments::jvm_flags_array(); | |
| 485 char** vm_args = Arguments::jvm_args_array(); | |
| 486 int num_flags = Arguments::num_jvm_flags(); | |
| 487 int num_args = Arguments::num_jvm_args(); | |
| 488 | |
| 489 size_t length = 1; // null terminator | |
| 490 int i; | |
| 491 for (i = 0; i < num_flags; i++) { | |
| 492 length += strlen(vm_flags[i]); | |
| 493 } | |
| 494 for (i = 0; i < num_args; i++) { | |
| 495 length += strlen(vm_args[i]); | |
| 496 } | |
| 497 // add a space between each argument | |
| 498 length += num_flags + num_args - 1; | |
| 499 | |
| 500 // Return the list of input arguments passed to the VM | |
| 501 // and preserve the order that the VM processes. | |
| 502 char* args = NEW_RESOURCE_ARRAY(char, length); | |
| 503 args[0] = '\0'; | |
| 504 // concatenate all jvm_flags | |
| 505 if (num_flags > 0) { | |
| 506 strcat(args, vm_flags[0]); | |
| 507 for (i = 1; i < num_flags; i++) { | |
| 508 strcat(args, " "); | |
| 509 strcat(args, vm_flags[i]); | |
| 510 } | |
| 511 } | |
| 512 | |
| 513 if (num_args > 0 && num_flags > 0) { | |
| 514 // append a space if args already contains one or more jvm_flags | |
| 515 strcat(args, " "); | |
| 516 } | |
| 517 | |
| 518 // concatenate all jvm_args | |
| 519 if (num_args > 0) { | |
| 520 strcat(args, vm_args[0]); | |
| 521 for (i = 1; i < num_args; i++) { | |
| 522 strcat(args, " "); | |
| 523 strcat(args, vm_args[i]); | |
| 524 } | |
| 525 } | |
| 526 | |
| 527 Handle hargs = java_lang_String::create_from_platform_dependent_str(args, CHECK_NULL); | |
| 528 return JNIHandles::make_local(env, hargs()); | |
| 529 JVM_END | |
| 530 | |
| 531 // Returns an array of java.lang.String object containing the input arguments to the VM. | |
| 532 JVM_ENTRY(jobjectArray, jmm_GetInputArgumentArray(JNIEnv *env)) | |
| 533 ResourceMark rm(THREAD); | |
| 534 | |
| 535 if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) { | |
| 536 return NULL; | |
| 537 } | |
| 538 | |
| 539 char** vm_flags = Arguments::jvm_flags_array(); | |
| 540 char** vm_args = Arguments::jvm_args_array(); | |
| 541 int num_flags = Arguments::num_jvm_flags(); | |
| 542 int num_args = Arguments::num_jvm_args(); | |
| 543 | |
| 1142 | 544 instanceKlassHandle ik (THREAD, SystemDictionary::String_klass()); |
| 0 | 545 objArrayOop r = oopFactory::new_objArray(ik(), num_args + num_flags, CHECK_NULL); |
| 546 objArrayHandle result_h(THREAD, r); | |
| 547 | |
| 548 int index = 0; | |
| 549 for (int j = 0; j < num_flags; j++, index++) { | |
| 550 Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL); | |
| 551 result_h->obj_at_put(index, h()); | |
| 552 } | |
| 553 for (int i = 0; i < num_args; i++, index++) { | |
| 554 Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL); | |
| 555 result_h->obj_at_put(index, h()); | |
| 556 } | |
| 557 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
| 558 JVM_END | |
| 559 | |
| 560 // Returns an array of java/lang/management/MemoryPoolMXBean object | |
| 561 // one for each memory pool if obj == null; otherwise returns | |
| 562 // an array of memory pools for a given memory manager if | |
| 563 // it is a valid memory manager. | |
| 564 JVM_ENTRY(jobjectArray, jmm_GetMemoryPools(JNIEnv* env, jobject obj)) | |
| 565 ResourceMark rm(THREAD); | |
| 566 | |
| 567 int num_memory_pools; | |
| 568 MemoryManager* mgr = NULL; | |
| 569 if (obj == NULL) { | |
| 570 num_memory_pools = MemoryService::num_memory_pools(); | |
| 571 } else { | |
| 572 mgr = get_memory_manager_from_jobject(obj, CHECK_NULL); | |
| 573 if (mgr == NULL) { | |
| 574 return NULL; | |
| 575 } | |
| 576 num_memory_pools = mgr->num_memory_pools(); | |
| 577 } | |
| 578 | |
| 579 // Allocate the resulting MemoryPoolMXBean[] object | |
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580 Klass* k = Management::java_lang_management_MemoryPoolMXBean_klass(CHECK_NULL); |
| 0 | 581 instanceKlassHandle ik (THREAD, k); |
| 582 objArrayOop r = oopFactory::new_objArray(ik(), num_memory_pools, CHECK_NULL); | |
| 583 objArrayHandle poolArray(THREAD, r); | |
| 584 | |
| 585 if (mgr == NULL) { | |
| 586 // Get all memory pools | |
| 587 for (int i = 0; i < num_memory_pools; i++) { | |
| 588 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
| 589 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
| 590 instanceHandle ph(THREAD, p); | |
| 591 poolArray->obj_at_put(i, ph()); | |
| 592 } | |
| 593 } else { | |
| 594 // Get memory pools managed by a given memory manager | |
| 595 for (int i = 0; i < num_memory_pools; i++) { | |
| 596 MemoryPool* pool = mgr->get_memory_pool(i); | |
| 597 instanceOop p = pool->get_memory_pool_instance(CHECK_NULL); | |
| 598 instanceHandle ph(THREAD, p); | |
| 599 poolArray->obj_at_put(i, ph()); | |
| 600 } | |
| 601 } | |
| 602 return (jobjectArray) JNIHandles::make_local(env, poolArray()); | |
| 603 JVM_END | |
| 604 | |
| 605 // Returns an array of java/lang/management/MemoryManagerMXBean object | |
| 606 // one for each memory manager if obj == null; otherwise returns | |
| 607 // an array of memory managers for a given memory pool if | |
| 608 // it is a valid memory pool. | |
| 609 JVM_ENTRY(jobjectArray, jmm_GetMemoryManagers(JNIEnv* env, jobject obj)) | |
| 610 ResourceMark rm(THREAD); | |
| 611 | |
| 612 int num_mgrs; | |
| 613 MemoryPool* pool = NULL; | |
| 614 if (obj == NULL) { | |
| 615 num_mgrs = MemoryService::num_memory_managers(); | |
| 616 } else { | |
| 617 pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 618 if (pool == NULL) { | |
| 619 return NULL; | |
| 620 } | |
| 621 num_mgrs = pool->num_memory_managers(); | |
| 622 } | |
| 623 | |
| 624 // Allocate the resulting MemoryManagerMXBean[] object | |
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625 Klass* k = Management::java_lang_management_MemoryManagerMXBean_klass(CHECK_NULL); |
| 0 | 626 instanceKlassHandle ik (THREAD, k); |
| 627 objArrayOop r = oopFactory::new_objArray(ik(), num_mgrs, CHECK_NULL); | |
| 628 objArrayHandle mgrArray(THREAD, r); | |
| 629 | |
| 630 if (pool == NULL) { | |
| 631 // Get all memory managers | |
| 632 for (int i = 0; i < num_mgrs; i++) { | |
| 633 MemoryManager* mgr = MemoryService::get_memory_manager(i); | |
| 634 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
| 635 instanceHandle ph(THREAD, p); | |
| 636 mgrArray->obj_at_put(i, ph()); | |
| 637 } | |
| 638 } else { | |
| 639 // Get memory managers for a given memory pool | |
| 640 for (int i = 0; i < num_mgrs; i++) { | |
| 641 MemoryManager* mgr = pool->get_memory_manager(i); | |
| 642 instanceOop p = mgr->get_memory_manager_instance(CHECK_NULL); | |
| 643 instanceHandle ph(THREAD, p); | |
| 644 mgrArray->obj_at_put(i, ph()); | |
| 645 } | |
| 646 } | |
| 647 return (jobjectArray) JNIHandles::make_local(env, mgrArray()); | |
| 648 JVM_END | |
| 649 | |
| 650 | |
| 651 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
| 652 // of a given memory pool. | |
| 653 JVM_ENTRY(jobject, jmm_GetMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
| 654 ResourceMark rm(THREAD); | |
| 655 | |
| 656 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 657 if (pool != NULL) { | |
| 658 MemoryUsage usage = pool->get_memory_usage(); | |
| 659 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 660 return JNIHandles::make_local(env, h()); | |
| 661 } else { | |
| 662 return NULL; | |
| 663 } | |
| 664 JVM_END | |
| 665 | |
| 666 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
| 667 // of a given memory pool. | |
| 668 JVM_ENTRY(jobject, jmm_GetPeakMemoryPoolUsage(JNIEnv* env, jobject obj)) | |
| 669 ResourceMark rm(THREAD); | |
| 670 | |
| 671 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 672 if (pool != NULL) { | |
| 673 MemoryUsage usage = pool->get_peak_memory_usage(); | |
| 674 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 675 return JNIHandles::make_local(env, h()); | |
| 676 } else { | |
| 677 return NULL; | |
| 678 } | |
| 679 JVM_END | |
| 680 | |
| 681 // Returns a java/lang/management/MemoryUsage object containing the memory usage | |
| 682 // of a given memory pool after most recent GC. | |
| 683 JVM_ENTRY(jobject, jmm_GetPoolCollectionUsage(JNIEnv* env, jobject obj)) | |
| 684 ResourceMark rm(THREAD); | |
| 685 | |
| 686 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_NULL); | |
| 687 if (pool != NULL && pool->is_collected_pool()) { | |
| 688 MemoryUsage usage = pool->get_last_collection_usage(); | |
| 689 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 690 return JNIHandles::make_local(env, h()); | |
| 691 } else { | |
| 692 return NULL; | |
| 693 } | |
| 694 JVM_END | |
| 695 | |
| 696 // Sets the memory pool sensor for a threshold type | |
| 697 JVM_ENTRY(void, jmm_SetPoolSensor(JNIEnv* env, jobject obj, jmmThresholdType type, jobject sensorObj)) | |
| 698 if (obj == NULL || sensorObj == NULL) { | |
| 699 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 700 } | |
| 701 | |
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702 Klass* sensor_klass = Management::sun_management_Sensor_klass(CHECK); |
| 0 | 703 oop s = JNIHandles::resolve(sensorObj); |
| 704 assert(s->is_instance(), "Sensor should be an instanceOop"); | |
| 705 instanceHandle sensor_h(THREAD, (instanceOop) s); | |
| 706 if (!sensor_h->is_a(sensor_klass)) { | |
| 707 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 708 "Sensor is not an instance of sun.management.Sensor class"); | |
| 709 } | |
| 710 | |
| 711 MemoryPool* mpool = get_memory_pool_from_jobject(obj, CHECK); | |
| 712 assert(mpool != NULL, "MemoryPool should exist"); | |
| 713 | |
| 714 switch (type) { | |
| 715 case JMM_USAGE_THRESHOLD_HIGH: | |
| 716 case JMM_USAGE_THRESHOLD_LOW: | |
| 717 // have only one sensor for threshold high and low | |
| 718 mpool->set_usage_sensor_obj(sensor_h); | |
| 719 break; | |
| 720 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
| 721 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
| 722 // have only one sensor for threshold high and low | |
| 723 mpool->set_gc_usage_sensor_obj(sensor_h); | |
| 724 break; | |
| 725 default: | |
| 726 assert(false, "Unrecognized type"); | |
| 727 } | |
| 728 | |
| 729 JVM_END | |
| 730 | |
| 731 | |
| 732 // Sets the threshold of a given memory pool. | |
| 733 // Returns the previous threshold. | |
| 734 // | |
| 735 // Input parameters: | |
| 736 // pool - the MemoryPoolMXBean object | |
| 737 // type - threshold type | |
| 738 // threshold - the new threshold (must not be negative) | |
| 739 // | |
| 740 JVM_ENTRY(jlong, jmm_SetPoolThreshold(JNIEnv* env, jobject obj, jmmThresholdType type, jlong threshold)) | |
| 741 if (threshold < 0) { | |
| 742 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 743 "Invalid threshold value", | |
| 744 -1); | |
| 745 } | |
| 746 | |
|
489
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|
747 if ((size_t)threshold > max_uintx) { |
|
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diff
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|
748 stringStream st; |
|
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|
749 st.print("Invalid valid threshold value. Threshold value (" UINT64_FORMAT ") > max value of size_t (" SIZE_FORMAT ")", (size_t)threshold, max_uintx); |
|
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|
750 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), st.as_string(), -1); |
| 0 | 751 } |
| 752 | |
| 753 MemoryPool* pool = get_memory_pool_from_jobject(obj, CHECK_(0L)); | |
| 754 assert(pool != NULL, "MemoryPool should exist"); | |
| 755 | |
| 756 jlong prev = 0; | |
| 757 switch (type) { | |
| 758 case JMM_USAGE_THRESHOLD_HIGH: | |
| 759 if (!pool->usage_threshold()->is_high_threshold_supported()) { | |
| 760 return -1; | |
| 761 } | |
| 762 prev = pool->usage_threshold()->set_high_threshold((size_t) threshold); | |
| 763 break; | |
| 764 | |
| 765 case JMM_USAGE_THRESHOLD_LOW: | |
| 766 if (!pool->usage_threshold()->is_low_threshold_supported()) { | |
| 767 return -1; | |
| 768 } | |
| 769 prev = pool->usage_threshold()->set_low_threshold((size_t) threshold); | |
| 770 break; | |
| 771 | |
| 772 case JMM_COLLECTION_USAGE_THRESHOLD_HIGH: | |
| 773 if (!pool->gc_usage_threshold()->is_high_threshold_supported()) { | |
| 774 return -1; | |
| 775 } | |
| 776 // return and the new threshold is effective for the next GC | |
| 777 return pool->gc_usage_threshold()->set_high_threshold((size_t) threshold); | |
| 778 | |
| 779 case JMM_COLLECTION_USAGE_THRESHOLD_LOW: | |
| 780 if (!pool->gc_usage_threshold()->is_low_threshold_supported()) { | |
| 781 return -1; | |
| 782 } | |
| 783 // return and the new threshold is effective for the next GC | |
| 784 return pool->gc_usage_threshold()->set_low_threshold((size_t) threshold); | |
| 785 | |
| 786 default: | |
| 787 assert(false, "Unrecognized type"); | |
| 788 return -1; | |
| 789 } | |
| 790 | |
| 791 // When the threshold is changed, reevaluate if the low memory | |
| 792 // detection is enabled. | |
| 793 if (prev != threshold) { | |
| 794 LowMemoryDetector::recompute_enabled_for_collected_pools(); | |
| 795 LowMemoryDetector::detect_low_memory(pool); | |
| 796 } | |
| 797 return prev; | |
| 798 JVM_END | |
| 799 | |
|
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|
800 // Gets an array containing the amount of memory allocated on the Java |
|
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diff
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|
801 // heap for a set of threads (in bytes). Each element of the array is |
|
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|
802 // the amount of memory allocated for the thread ID specified in the |
|
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|
803 // corresponding entry in the given array of thread IDs; or -1 if the |
|
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|
804 // thread does not exist or has terminated. |
|
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diff
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|
805 JVM_ENTRY(void, jmm_GetThreadAllocatedMemory(JNIEnv *env, jlongArray ids, |
|
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|
806 jlongArray sizeArray)) |
|
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807 // Check if threads is null |
|
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|
808 if (ids == NULL || sizeArray == NULL) { |
|
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|
809 THROW(vmSymbols::java_lang_NullPointerException()); |
|
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|
810 } |
|
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|
811 |
|
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|
812 ResourceMark rm(THREAD); |
|
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813 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
|
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|
814 typeArrayHandle ids_ah(THREAD, ta); |
|
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|
815 |
|
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|
816 typeArrayOop sa = typeArrayOop(JNIHandles::resolve_non_null(sizeArray)); |
|
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817 typeArrayHandle sizeArray_h(THREAD, sa); |
|
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|
818 |
|
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|
819 // validate the thread id array |
|
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|
820 validate_thread_id_array(ids_ah, CHECK); |
|
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|
821 |
|
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822 // sizeArray must be of the same length as the given array of thread IDs |
|
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823 int num_threads = ids_ah->length(); |
|
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824 if (num_threads != sizeArray_h->length()) { |
|
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|
825 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
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826 "The length of the given long array does not match the length of " |
|
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|
827 "the given array of thread IDs"); |
|
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diff
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|
828 } |
|
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|
829 |
|
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|
830 MutexLockerEx ml(Threads_lock); |
|
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|
831 for (int i = 0; i < num_threads; i++) { |
|
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|
832 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
|
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|
833 if (java_thread != NULL) { |
|
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diff
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|
834 sizeArray_h->long_at_put(i, java_thread->cooked_allocated_bytes()); |
|
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diff
changeset
|
835 } |
|
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diff
changeset
|
836 } |
|
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diff
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|
837 JVM_END |
|
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|
838 |
| 0 | 839 // Returns a java/lang/management/MemoryUsage object representing |
| 840 // the memory usage for the heap or non-heap memory. | |
| 841 JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap)) | |
| 842 ResourceMark rm(THREAD); | |
| 843 | |
| 844 // Calculate the memory usage | |
| 845 size_t total_init = 0; | |
| 846 size_t total_used = 0; | |
| 847 size_t total_committed = 0; | |
| 848 size_t total_max = 0; | |
| 849 bool has_undefined_init_size = false; | |
| 850 bool has_undefined_max_size = false; | |
| 851 | |
| 852 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
| 853 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
| 854 if ((heap && pool->is_heap()) || (!heap && pool->is_non_heap())) { | |
| 855 MemoryUsage u = pool->get_memory_usage(); | |
| 856 total_used += u.used(); | |
| 857 total_committed += u.committed(); | |
| 858 | |
| 859 // if any one of the memory pool has undefined init_size or max_size, | |
| 860 // set it to -1 | |
| 861 if (u.init_size() == (size_t)-1) { | |
| 862 has_undefined_init_size = true; | |
| 863 } | |
| 864 if (!has_undefined_init_size) { | |
| 865 total_init += u.init_size(); | |
| 866 } | |
| 867 | |
| 868 if (u.max_size() == (size_t)-1) { | |
| 869 has_undefined_max_size = true; | |
| 870 } | |
| 871 if (!has_undefined_max_size) { | |
| 872 total_max += u.max_size(); | |
| 873 } | |
| 874 } | |
| 875 } | |
| 876 | |
|
1757
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tonyp
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1703
diff
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|
877 // In our current implementation, we make sure that all non-heap |
|
1c63587d925b
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diff
changeset
|
878 // pools have defined init and max sizes. Heap pools do not matter, |
|
1c63587d925b
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tonyp
parents:
1703
diff
changeset
|
879 // as we never use total_init and total_max for them. |
|
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tonyp
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1703
diff
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|
880 assert(heap || !has_undefined_init_size, "Undefined init size"); |
|
1c63587d925b
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1703
diff
changeset
|
881 assert(heap || !has_undefined_max_size, "Undefined max size"); |
| 0 | 882 |
| 1064 | 883 MemoryUsage usage((heap ? InitialHeapSize : total_init), |
| 0 | 884 total_used, |
| 885 total_committed, | |
| 886 (heap ? Universe::heap()->max_capacity() : total_max)); | |
| 887 | |
| 888 Handle obj = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL); | |
| 889 return JNIHandles::make_local(env, obj()); | |
| 890 JVM_END | |
| 891 | |
| 892 // Returns the boolean value of a given attribute. | |
| 893 JVM_LEAF(jboolean, jmm_GetBoolAttribute(JNIEnv *env, jmmBoolAttribute att)) | |
| 894 switch (att) { | |
| 895 case JMM_VERBOSE_GC: | |
| 896 return MemoryService::get_verbose(); | |
| 897 case JMM_VERBOSE_CLASS: | |
| 898 return ClassLoadingService::get_verbose(); | |
| 899 case JMM_THREAD_CONTENTION_MONITORING: | |
| 900 return ThreadService::is_thread_monitoring_contention(); | |
| 901 case JMM_THREAD_CPU_TIME: | |
| 902 return ThreadService::is_thread_cpu_time_enabled(); | |
|
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903 case JMM_THREAD_ALLOCATED_MEMORY: |
|
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904 return ThreadService::is_thread_allocated_memory_enabled(); |
| 0 | 905 default: |
| 906 assert(0, "Unrecognized attribute"); | |
| 907 return false; | |
| 908 } | |
| 909 JVM_END | |
| 910 | |
| 911 // Sets the given boolean attribute and returns the previous value. | |
| 912 JVM_ENTRY(jboolean, jmm_SetBoolAttribute(JNIEnv *env, jmmBoolAttribute att, jboolean flag)) | |
| 913 switch (att) { | |
| 914 case JMM_VERBOSE_GC: | |
| 915 return MemoryService::set_verbose(flag != 0); | |
| 916 case JMM_VERBOSE_CLASS: | |
| 917 return ClassLoadingService::set_verbose(flag != 0); | |
| 918 case JMM_THREAD_CONTENTION_MONITORING: | |
| 919 return ThreadService::set_thread_monitoring_contention(flag != 0); | |
| 920 case JMM_THREAD_CPU_TIME: | |
| 921 return ThreadService::set_thread_cpu_time_enabled(flag != 0); | |
|
2100
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922 case JMM_THREAD_ALLOCATED_MEMORY: |
|
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|
923 return ThreadService::set_thread_allocated_memory_enabled(flag != 0); |
| 0 | 924 default: |
| 925 assert(0, "Unrecognized attribute"); | |
| 926 return false; | |
| 927 } | |
| 928 JVM_END | |
| 929 | |
| 930 | |
| 931 static jlong get_gc_attribute(GCMemoryManager* mgr, jmmLongAttribute att) { | |
| 932 switch (att) { | |
| 933 case JMM_GC_TIME_MS: | |
| 934 return mgr->gc_time_ms(); | |
| 935 | |
| 936 case JMM_GC_COUNT: | |
| 937 return mgr->gc_count(); | |
| 938 | |
| 939 case JMM_GC_EXT_ATTRIBUTE_INFO_SIZE: | |
| 940 // current implementation only has 1 ext attribute | |
| 941 return 1; | |
| 942 | |
| 943 default: | |
| 944 assert(0, "Unrecognized GC attribute"); | |
| 945 return -1; | |
| 946 } | |
| 947 } | |
| 948 | |
| 949 class VmThreadCountClosure: public ThreadClosure { | |
| 950 private: | |
| 951 int _count; | |
| 952 public: | |
| 953 VmThreadCountClosure() : _count(0) {}; | |
| 954 void do_thread(Thread* thread); | |
| 955 int count() { return _count; } | |
| 956 }; | |
| 957 | |
| 958 void VmThreadCountClosure::do_thread(Thread* thread) { | |
| 959 // exclude externally visible JavaThreads | |
| 960 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
| 961 return; | |
| 962 } | |
| 963 | |
| 964 _count++; | |
| 965 } | |
| 966 | |
| 967 static jint get_vm_thread_count() { | |
| 968 VmThreadCountClosure vmtcc; | |
| 969 { | |
| 970 MutexLockerEx ml(Threads_lock); | |
| 971 Threads::threads_do(&vmtcc); | |
| 972 } | |
| 973 | |
| 974 return vmtcc.count(); | |
| 975 } | |
| 976 | |
| 977 static jint get_num_flags() { | |
| 978 // last flag entry is always NULL, so subtract 1 | |
| 979 int nFlags = (int) Flag::numFlags - 1; | |
| 980 int count = 0; | |
| 981 for (int i = 0; i < nFlags; i++) { | |
| 982 Flag* flag = &Flag::flags[i]; | |
| 350 | 983 // Exclude the locked (diagnostic, experimental) flags |
| 0 | 984 if (flag->is_unlocked() || flag->is_unlocker()) { |
| 985 count++; | |
| 986 } | |
| 987 } | |
| 988 return count; | |
| 989 } | |
| 990 | |
| 991 static jlong get_long_attribute(jmmLongAttribute att) { | |
| 992 switch (att) { | |
| 993 case JMM_CLASS_LOADED_COUNT: | |
| 994 return ClassLoadingService::loaded_class_count(); | |
| 995 | |
| 996 case JMM_CLASS_UNLOADED_COUNT: | |
| 997 return ClassLoadingService::unloaded_class_count(); | |
| 998 | |
| 999 case JMM_THREAD_TOTAL_COUNT: | |
| 1000 return ThreadService::get_total_thread_count(); | |
| 1001 | |
| 1002 case JMM_THREAD_LIVE_COUNT: | |
| 1003 return ThreadService::get_live_thread_count(); | |
| 1004 | |
| 1005 case JMM_THREAD_PEAK_COUNT: | |
| 1006 return ThreadService::get_peak_thread_count(); | |
| 1007 | |
| 1008 case JMM_THREAD_DAEMON_COUNT: | |
| 1009 return ThreadService::get_daemon_thread_count(); | |
| 1010 | |
| 1011 case JMM_JVM_INIT_DONE_TIME_MS: | |
| 1012 return Management::vm_init_done_time(); | |
| 1013 | |
| 1014 case JMM_COMPILE_TOTAL_TIME_MS: | |
| 1015 return Management::ticks_to_ms(CompileBroker::total_compilation_ticks()); | |
| 1016 | |
| 1017 case JMM_OS_PROCESS_ID: | |
| 1018 return os::current_process_id(); | |
| 1019 | |
| 1020 // Hotspot-specific counters | |
| 1021 case JMM_CLASS_LOADED_BYTES: | |
| 1022 return ClassLoadingService::loaded_class_bytes(); | |
| 1023 | |
| 1024 case JMM_CLASS_UNLOADED_BYTES: | |
| 1025 return ClassLoadingService::unloaded_class_bytes(); | |
| 1026 | |
| 1027 case JMM_SHARED_CLASS_LOADED_COUNT: | |
| 1028 return ClassLoadingService::loaded_shared_class_count(); | |
| 1029 | |
| 1030 case JMM_SHARED_CLASS_UNLOADED_COUNT: | |
| 1031 return ClassLoadingService::unloaded_shared_class_count(); | |
| 1032 | |
| 1033 | |
| 1034 case JMM_SHARED_CLASS_LOADED_BYTES: | |
| 1035 return ClassLoadingService::loaded_shared_class_bytes(); | |
| 1036 | |
| 1037 case JMM_SHARED_CLASS_UNLOADED_BYTES: | |
| 1038 return ClassLoadingService::unloaded_shared_class_bytes(); | |
| 1039 | |
| 1040 case JMM_TOTAL_CLASSLOAD_TIME_MS: | |
| 1041 return ClassLoader::classloader_time_ms(); | |
| 1042 | |
| 1043 case JMM_VM_GLOBAL_COUNT: | |
| 1044 return get_num_flags(); | |
| 1045 | |
| 1046 case JMM_SAFEPOINT_COUNT: | |
| 1047 return RuntimeService::safepoint_count(); | |
| 1048 | |
| 1049 case JMM_TOTAL_SAFEPOINTSYNC_TIME_MS: | |
| 1050 return RuntimeService::safepoint_sync_time_ms(); | |
| 1051 | |
| 1052 case JMM_TOTAL_STOPPED_TIME_MS: | |
| 1053 return RuntimeService::safepoint_time_ms(); | |
| 1054 | |
| 1055 case JMM_TOTAL_APP_TIME_MS: | |
| 1056 return RuntimeService::application_time_ms(); | |
| 1057 | |
| 1058 case JMM_VM_THREAD_COUNT: | |
| 1059 return get_vm_thread_count(); | |
| 1060 | |
| 1061 case JMM_CLASS_INIT_TOTAL_COUNT: | |
| 1062 return ClassLoader::class_init_count(); | |
| 1063 | |
| 1064 case JMM_CLASS_INIT_TOTAL_TIME_MS: | |
| 1065 return ClassLoader::class_init_time_ms(); | |
| 1066 | |
| 1067 case JMM_CLASS_VERIFY_TOTAL_TIME_MS: | |
| 1068 return ClassLoader::class_verify_time_ms(); | |
| 1069 | |
| 1070 case JMM_METHOD_DATA_SIZE_BYTES: | |
| 1071 return ClassLoadingService::class_method_data_size(); | |
| 1072 | |
| 1073 case JMM_OS_MEM_TOTAL_PHYSICAL_BYTES: | |
| 1074 return os::physical_memory(); | |
| 1075 | |
| 1076 default: | |
| 1077 return -1; | |
| 1078 } | |
| 1079 } | |
| 1080 | |
| 1081 | |
| 1082 // Returns the long value of a given attribute. | |
| 1083 JVM_ENTRY(jlong, jmm_GetLongAttribute(JNIEnv *env, jobject obj, jmmLongAttribute att)) | |
| 1084 if (obj == NULL) { | |
| 1085 return get_long_attribute(att); | |
| 1086 } else { | |
| 1087 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_(0L)); | |
| 1088 if (mgr != NULL) { | |
| 1089 return get_gc_attribute(mgr, att); | |
| 1090 } | |
| 1091 } | |
| 1092 return -1; | |
| 1093 JVM_END | |
| 1094 | |
| 1095 // Gets the value of all attributes specified in the given array | |
| 1096 // and sets the value in the result array. | |
| 1097 // Returns the number of attributes found. | |
| 1098 JVM_ENTRY(jint, jmm_GetLongAttributes(JNIEnv *env, | |
| 1099 jobject obj, | |
| 1100 jmmLongAttribute* atts, | |
| 1101 jint count, | |
| 1102 jlong* result)) | |
| 1103 | |
| 1104 int num_atts = 0; | |
| 1105 if (obj == NULL) { | |
| 1106 for (int i = 0; i < count; i++) { | |
| 1107 result[i] = get_long_attribute(atts[i]); | |
| 1108 if (result[i] != -1) { | |
| 1109 num_atts++; | |
| 1110 } | |
| 1111 } | |
| 1112 } else { | |
| 1113 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK_0); | |
| 1114 for (int i = 0; i < count; i++) { | |
| 1115 result[i] = get_gc_attribute(mgr, atts[i]); | |
| 1116 if (result[i] != -1) { | |
| 1117 num_atts++; | |
| 1118 } | |
| 1119 } | |
| 1120 } | |
| 1121 return num_atts; | |
| 1122 JVM_END | |
| 1123 | |
| 1124 // Helper function to do thread dump for a specific list of threads | |
| 1125 static void do_thread_dump(ThreadDumpResult* dump_result, | |
| 1126 typeArrayHandle ids_ah, // array of thread ID (long[]) | |
| 1127 int num_threads, | |
| 1128 int max_depth, | |
| 1129 bool with_locked_monitors, | |
| 1130 bool with_locked_synchronizers, | |
| 1131 TRAPS) { | |
| 1132 | |
| 1133 // First get an array of threadObj handles. | |
| 1134 // A JavaThread may terminate before we get the stack trace. | |
| 1135 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 1136 { | |
| 1137 MutexLockerEx ml(Threads_lock); | |
| 1138 for (int i = 0; i < num_threads; i++) { | |
| 1139 jlong tid = ids_ah->long_at(i); | |
| 1140 JavaThread* jt = find_java_thread_from_id(tid); | |
| 1141 oop thread_obj = (jt != NULL ? jt->threadObj() : (oop)NULL); | |
| 1142 instanceHandle threadObj_h(THREAD, (instanceOop) thread_obj); | |
| 1143 thread_handle_array->append(threadObj_h); | |
| 1144 } | |
| 1145 } | |
| 1146 | |
| 1147 // Obtain thread dumps and thread snapshot information | |
| 1148 VM_ThreadDump op(dump_result, | |
| 1149 thread_handle_array, | |
| 1150 num_threads, | |
| 1151 max_depth, /* stack depth */ | |
| 1152 with_locked_monitors, | |
| 1153 with_locked_synchronizers); | |
| 1154 VMThread::execute(&op); | |
| 1155 } | |
| 1156 | |
| 1157 // Gets an array of ThreadInfo objects. Each element is the ThreadInfo | |
| 1158 // for the thread ID specified in the corresponding entry in | |
| 1159 // the given array of thread IDs; or NULL if the thread does not exist | |
| 1160 // or has terminated. | |
| 1161 // | |
| 1162 // Input parameters: | |
| 1163 // ids - array of thread IDs | |
| 1164 // maxDepth - the maximum depth of stack traces to be dumped: | |
| 1165 // maxDepth == -1 requests to dump entire stack trace. | |
| 1166 // maxDepth == 0 requests no stack trace. | |
| 1167 // infoArray - array of ThreadInfo objects | |
| 1168 // | |
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1169 // QQQ - Why does this method return a value instead of void? |
| 0 | 1170 JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jobjectArray infoArray)) |
| 1171 // Check if threads is null | |
| 1172 if (ids == NULL || infoArray == NULL) { | |
| 1173 THROW_(vmSymbols::java_lang_NullPointerException(), -1); | |
| 1174 } | |
| 1175 | |
| 1176 if (maxDepth < -1) { | |
| 1177 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1178 "Invalid maxDepth", -1); | |
| 1179 } | |
| 1180 | |
| 1181 ResourceMark rm(THREAD); | |
| 1182 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); | |
| 1183 typeArrayHandle ids_ah(THREAD, ta); | |
| 1184 | |
| 1185 oop infoArray_obj = JNIHandles::resolve_non_null(infoArray); | |
| 1186 objArrayOop oa = objArrayOop(infoArray_obj); | |
| 1187 objArrayHandle infoArray_h(THREAD, oa); | |
| 1188 | |
| 1189 // validate the thread id array | |
| 1190 validate_thread_id_array(ids_ah, CHECK_0); | |
| 1191 | |
| 1192 // validate the ThreadInfo[] parameters | |
| 1193 validate_thread_info_array(infoArray_h, CHECK_0); | |
| 1194 | |
| 1195 // infoArray must be of the same length as the given array of thread IDs | |
| 1196 int num_threads = ids_ah->length(); | |
| 1197 if (num_threads != infoArray_h->length()) { | |
| 1198 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1199 "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1); | |
| 1200 } | |
| 1201 | |
| 1202 if (JDK_Version::is_gte_jdk16x_version()) { | |
| 1203 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
| 1204 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0); | |
| 1205 } | |
| 1206 | |
| 1207 // Must use ThreadDumpResult to store the ThreadSnapshot. | |
| 1208 // GC may occur after the thread snapshots are taken but before | |
| 1209 // this function returns. The threadObj and other oops kept | |
| 1210 // in the ThreadSnapshot are marked and adjusted during GC. | |
| 1211 ThreadDumpResult dump_result(num_threads); | |
| 1212 | |
| 1213 if (maxDepth == 0) { | |
| 1214 // no stack trace dumped - do not need to stop the world | |
| 1215 { | |
| 1216 MutexLockerEx ml(Threads_lock); | |
| 1217 for (int i = 0; i < num_threads; i++) { | |
| 1218 jlong tid = ids_ah->long_at(i); | |
| 1219 JavaThread* jt = find_java_thread_from_id(tid); | |
| 1220 ThreadSnapshot* ts; | |
| 1221 if (jt == NULL) { | |
| 1222 // if the thread does not exist or now it is terminated, | |
| 1223 // create dummy snapshot | |
| 1224 ts = new ThreadSnapshot(); | |
| 1225 } else { | |
| 1226 ts = new ThreadSnapshot(jt); | |
| 1227 } | |
| 1228 dump_result.add_thread_snapshot(ts); | |
| 1229 } | |
| 1230 } | |
| 1231 } else { | |
| 1232 // obtain thread dump with the specific list of threads with stack trace | |
| 1233 do_thread_dump(&dump_result, | |
| 1234 ids_ah, | |
| 1235 num_threads, | |
| 1236 maxDepth, | |
| 1237 false, /* no locked monitor */ | |
| 1238 false, /* no locked synchronizers */ | |
| 1239 CHECK_0); | |
| 1240 } | |
| 1241 | |
| 1242 int num_snapshots = dump_result.num_snapshots(); | |
| 1243 assert(num_snapshots == num_threads, "Must match the number of thread snapshots"); | |
| 1244 int index = 0; | |
| 1245 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; index++, ts = ts->next()) { | |
| 1246 // For each thread, create an java/lang/management/ThreadInfo object | |
| 1247 // and fill with the thread information | |
| 1248 | |
| 1249 if (ts->threadObj() == NULL) { | |
| 1250 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
| 1251 infoArray_h->obj_at_put(index, NULL); | |
| 1252 continue; | |
| 1253 } | |
| 1254 | |
| 1255 // Create java.lang.management.ThreadInfo object | |
| 1256 instanceOop info_obj = Management::create_thread_info_instance(ts, CHECK_0); | |
| 1257 infoArray_h->obj_at_put(index, info_obj); | |
| 1258 } | |
| 1259 return 0; | |
| 1260 JVM_END | |
| 1261 | |
| 1262 // Dump thread info for the specified threads. | |
| 1263 // It returns an array of ThreadInfo objects. Each element is the ThreadInfo | |
| 1264 // for the thread ID specified in the corresponding entry in | |
| 1265 // the given array of thread IDs; or NULL if the thread does not exist | |
| 1266 // or has terminated. | |
| 1267 // | |
| 1268 // Input parameter: | |
| 1269 // ids - array of thread IDs; NULL indicates all live threads | |
| 1270 // locked_monitors - if true, dump locked object monitors | |
| 1271 // locked_synchronizers - if true, dump locked JSR-166 synchronizers | |
| 1272 // | |
| 1273 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers)) | |
| 1274 ResourceMark rm(THREAD); | |
| 1275 | |
| 1276 if (JDK_Version::is_gte_jdk16x_version()) { | |
| 1277 // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots | |
| 1278 java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL); | |
| 1279 } | |
| 1280 | |
| 1281 typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids)); | |
| 1282 int num_threads = (ta != NULL ? ta->length() : 0); | |
| 1283 typeArrayHandle ids_ah(THREAD, ta); | |
| 1284 | |
| 1285 ThreadDumpResult dump_result(num_threads); // can safepoint | |
| 1286 | |
| 1287 if (ids_ah() != NULL) { | |
| 1288 | |
| 1289 // validate the thread id array | |
| 1290 validate_thread_id_array(ids_ah, CHECK_NULL); | |
| 1291 | |
| 1292 // obtain thread dump of a specific list of threads | |
| 1293 do_thread_dump(&dump_result, | |
| 1294 ids_ah, | |
| 1295 num_threads, | |
| 1296 -1, /* entire stack */ | |
| 1297 (locked_monitors ? true : false), /* with locked monitors */ | |
| 1298 (locked_synchronizers ? true : false), /* with locked synchronizers */ | |
| 1299 CHECK_NULL); | |
| 1300 } else { | |
| 1301 // obtain thread dump of all threads | |
| 1302 VM_ThreadDump op(&dump_result, | |
| 1303 -1, /* entire stack */ | |
| 1304 (locked_monitors ? true : false), /* with locked monitors */ | |
| 1305 (locked_synchronizers ? true : false) /* with locked synchronizers */); | |
| 1306 VMThread::execute(&op); | |
| 1307 } | |
| 1308 | |
| 1309 int num_snapshots = dump_result.num_snapshots(); | |
| 1310 | |
| 1311 // create the result ThreadInfo[] object | |
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1312 Klass* k = Management::java_lang_management_ThreadInfo_klass(CHECK_NULL); |
| 0 | 1313 instanceKlassHandle ik (THREAD, k); |
| 1314 objArrayOop r = oopFactory::new_objArray(ik(), num_snapshots, CHECK_NULL); | |
| 1315 objArrayHandle result_h(THREAD, r); | |
| 1316 | |
| 1317 int index = 0; | |
| 1318 for (ThreadSnapshot* ts = dump_result.snapshots(); ts != NULL; ts = ts->next(), index++) { | |
| 1319 if (ts->threadObj() == NULL) { | |
| 1320 // if the thread does not exist or now it is terminated, set threadinfo to NULL | |
| 1321 result_h->obj_at_put(index, NULL); | |
| 1322 continue; | |
| 1323 } | |
| 1324 | |
| 1325 ThreadStackTrace* stacktrace = ts->get_stack_trace(); | |
| 1326 assert(stacktrace != NULL, "Must have a stack trace dumped"); | |
| 1327 | |
| 1328 // Create Object[] filled with locked monitors | |
| 1329 // Create int[] filled with the stack depth where a monitor was locked | |
| 1330 int num_frames = stacktrace->get_stack_depth(); | |
| 1331 int num_locked_monitors = stacktrace->num_jni_locked_monitors(); | |
| 1332 | |
| 1333 // Count the total number of locked monitors | |
| 1334 for (int i = 0; i < num_frames; i++) { | |
| 1335 StackFrameInfo* frame = stacktrace->stack_frame_at(i); | |
| 1336 num_locked_monitors += frame->num_locked_monitors(); | |
| 1337 } | |
| 1338 | |
| 1339 objArrayHandle monitors_array; | |
| 1340 typeArrayHandle depths_array; | |
| 1341 objArrayHandle synchronizers_array; | |
| 1342 | |
| 1343 if (locked_monitors) { | |
| 1344 // Constructs Object[] and int[] to contain the object monitor and the stack depth | |
| 1345 // where the thread locked it | |
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1346 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_monitors, CHECK_NULL); |
| 0 | 1347 objArrayHandle mh(THREAD, array); |
| 1348 monitors_array = mh; | |
| 1349 | |
| 1350 typeArrayOop tarray = oopFactory::new_typeArray(T_INT, num_locked_monitors, CHECK_NULL); | |
| 1351 typeArrayHandle dh(THREAD, tarray); | |
| 1352 depths_array = dh; | |
| 1353 | |
| 1354 int count = 0; | |
| 1355 int j = 0; | |
| 1356 for (int depth = 0; depth < num_frames; depth++) { | |
| 1357 StackFrameInfo* frame = stacktrace->stack_frame_at(depth); | |
| 1358 int len = frame->num_locked_monitors(); | |
| 1359 GrowableArray<oop>* locked_monitors = frame->locked_monitors(); | |
| 1360 for (j = 0; j < len; j++) { | |
| 1361 oop monitor = locked_monitors->at(j); | |
| 1362 assert(monitor != NULL && monitor->is_instance(), "must be a Java object"); | |
| 1363 monitors_array->obj_at_put(count, monitor); | |
| 1364 depths_array->int_at_put(count, depth); | |
| 1365 count++; | |
| 1366 } | |
| 1367 } | |
| 1368 | |
| 1369 GrowableArray<oop>* jni_locked_monitors = stacktrace->jni_locked_monitors(); | |
| 1370 for (j = 0; j < jni_locked_monitors->length(); j++) { | |
| 1371 oop object = jni_locked_monitors->at(j); | |
| 1372 assert(object != NULL && object->is_instance(), "must be a Java object"); | |
| 1373 monitors_array->obj_at_put(count, object); | |
| 1374 // Monitor locked via JNI MonitorEnter call doesn't have stack depth info | |
| 1375 depths_array->int_at_put(count, -1); | |
| 1376 count++; | |
| 1377 } | |
| 1378 assert(count == num_locked_monitors, "number of locked monitors doesn't match"); | |
| 1379 } | |
| 1380 | |
| 1381 if (locked_synchronizers) { | |
| 1382 // Create Object[] filled with locked JSR-166 synchronizers | |
| 1383 assert(ts->threadObj() != NULL, "Must be a valid JavaThread"); | |
| 1384 ThreadConcurrentLocks* tcl = ts->get_concurrent_locks(); | |
| 1385 GrowableArray<instanceOop>* locks = (tcl != NULL ? tcl->owned_locks() : NULL); | |
| 1386 int num_locked_synchronizers = (locks != NULL ? locks->length() : 0); | |
| 1387 | |
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1388 objArrayOop array = oopFactory::new_objArray(SystemDictionary::Object_klass(), num_locked_synchronizers, CHECK_NULL); |
| 0 | 1389 objArrayHandle sh(THREAD, array); |
| 1390 synchronizers_array = sh; | |
| 1391 | |
| 1392 for (int k = 0; k < num_locked_synchronizers; k++) { | |
| 1393 synchronizers_array->obj_at_put(k, locks->at(k)); | |
| 1394 } | |
| 1395 } | |
| 1396 | |
| 1397 // Create java.lang.management.ThreadInfo object | |
| 1398 instanceOop info_obj = Management::create_thread_info_instance(ts, | |
| 1399 monitors_array, | |
| 1400 depths_array, | |
| 1401 synchronizers_array, | |
| 1402 CHECK_NULL); | |
| 1403 result_h->obj_at_put(index, info_obj); | |
| 1404 } | |
| 1405 | |
| 1406 return (jobjectArray) JNIHandles::make_local(env, result_h()); | |
| 1407 JVM_END | |
| 1408 | |
| 1409 // Returns an array of Class objects. | |
| 1410 JVM_ENTRY(jobjectArray, jmm_GetLoadedClasses(JNIEnv *env)) | |
| 1411 ResourceMark rm(THREAD); | |
| 1412 | |
| 1413 LoadedClassesEnumerator lce(THREAD); // Pass current Thread as parameter | |
| 1414 | |
| 1415 int num_classes = lce.num_loaded_classes(); | |
| 1142 | 1416 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), num_classes, CHECK_0); |
| 0 | 1417 objArrayHandle classes_ah(THREAD, r); |
| 1418 | |
| 1419 for (int i = 0; i < num_classes; i++) { | |
| 1420 KlassHandle kh = lce.get_klass(i); | |
| 6983 | 1421 oop mirror = kh()->java_mirror(); |
| 0 | 1422 classes_ah->obj_at_put(i, mirror); |
| 1423 } | |
| 1424 | |
| 1425 return (jobjectArray) JNIHandles::make_local(env, classes_ah()); | |
| 1426 JVM_END | |
| 1427 | |
| 1428 // Reset statistic. Return true if the requested statistic is reset. | |
| 1429 // Otherwise, return false. | |
| 1430 // | |
| 1431 // Input parameters: | |
| 1432 // obj - specify which instance the statistic associated with to be reset | |
| 1433 // For PEAK_POOL_USAGE stat, obj is required to be a memory pool object. | |
| 1434 // For THREAD_CONTENTION_COUNT and TIME stat, obj is required to be a thread ID. | |
| 1435 // type - the type of statistic to be reset | |
| 1436 // | |
| 1437 JVM_ENTRY(jboolean, jmm_ResetStatistic(JNIEnv *env, jvalue obj, jmmStatisticType type)) | |
| 1438 ResourceMark rm(THREAD); | |
| 1439 | |
| 1440 switch (type) { | |
| 1441 case JMM_STAT_PEAK_THREAD_COUNT: | |
| 1442 ThreadService::reset_peak_thread_count(); | |
| 1443 return true; | |
| 1444 | |
| 1445 case JMM_STAT_THREAD_CONTENTION_COUNT: | |
| 1446 case JMM_STAT_THREAD_CONTENTION_TIME: { | |
| 1447 jlong tid = obj.j; | |
| 1448 if (tid < 0) { | |
| 1449 THROW_(vmSymbols::java_lang_IllegalArgumentException(), JNI_FALSE); | |
| 1450 } | |
| 1451 | |
| 1452 // Look for the JavaThread of this given tid | |
| 1453 MutexLockerEx ml(Threads_lock); | |
| 1454 if (tid == 0) { | |
| 1455 // reset contention statistics for all threads if tid == 0 | |
| 1456 for (JavaThread* java_thread = Threads::first(); java_thread != NULL; java_thread = java_thread->next()) { | |
| 1457 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
| 1458 ThreadService::reset_contention_count_stat(java_thread); | |
| 1459 } else { | |
| 1460 ThreadService::reset_contention_time_stat(java_thread); | |
| 1461 } | |
| 1462 } | |
| 1463 } else { | |
| 1464 // reset contention statistics for a given thread | |
| 1465 JavaThread* java_thread = find_java_thread_from_id(tid); | |
| 1466 if (java_thread == NULL) { | |
| 1467 return false; | |
| 1468 } | |
| 1469 | |
| 1470 if (type == JMM_STAT_THREAD_CONTENTION_COUNT) { | |
| 1471 ThreadService::reset_contention_count_stat(java_thread); | |
| 1472 } else { | |
| 1473 ThreadService::reset_contention_time_stat(java_thread); | |
| 1474 } | |
| 1475 } | |
| 1476 return true; | |
| 1477 break; | |
| 1478 } | |
| 1479 case JMM_STAT_PEAK_POOL_USAGE: { | |
| 1480 jobject o = obj.l; | |
| 1481 if (o == NULL) { | |
| 1482 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 1483 } | |
| 1484 | |
| 1485 oop pool_obj = JNIHandles::resolve(o); | |
| 1486 assert(pool_obj->is_instance(), "Should be an instanceOop"); | |
| 1487 instanceHandle ph(THREAD, (instanceOop) pool_obj); | |
| 1488 | |
| 1489 MemoryPool* pool = MemoryService::get_memory_pool(ph); | |
| 1490 if (pool != NULL) { | |
| 1491 pool->reset_peak_memory_usage(); | |
| 1492 return true; | |
| 1493 } | |
| 1494 break; | |
| 1495 } | |
| 1496 case JMM_STAT_GC_STAT: { | |
| 1497 jobject o = obj.l; | |
| 1498 if (o == NULL) { | |
| 1499 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 1500 } | |
| 1501 | |
| 1502 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(o, CHECK_0); | |
| 1503 if (mgr != NULL) { | |
| 1504 mgr->reset_gc_stat(); | |
| 1505 return true; | |
| 1506 } | |
| 1507 break; | |
| 1508 } | |
| 1509 default: | |
| 1510 assert(0, "Unknown Statistic Type"); | |
| 1511 } | |
| 1512 return false; | |
| 1513 JVM_END | |
| 1514 | |
| 1515 // Returns the fast estimate of CPU time consumed by | |
| 1516 // a given thread (in nanoseconds). | |
| 1517 // If thread_id == 0, return CPU time for the current thread. | |
| 1518 JVM_ENTRY(jlong, jmm_GetThreadCpuTime(JNIEnv *env, jlong thread_id)) | |
| 1519 if (!os::is_thread_cpu_time_supported()) { | |
| 1520 return -1; | |
| 1521 } | |
| 1522 | |
| 1523 if (thread_id < 0) { | |
| 1524 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1525 "Invalid thread ID", -1); | |
| 1526 } | |
| 1527 | |
| 1528 JavaThread* java_thread = NULL; | |
| 1529 if (thread_id == 0) { | |
| 1530 // current thread | |
| 1531 return os::current_thread_cpu_time(); | |
| 1532 } else { | |
| 1533 MutexLockerEx ml(Threads_lock); | |
| 1534 java_thread = find_java_thread_from_id(thread_id); | |
| 1535 if (java_thread != NULL) { | |
| 1536 return os::thread_cpu_time((Thread*) java_thread); | |
| 1537 } | |
| 1538 } | |
| 1539 return -1; | |
| 1540 JVM_END | |
| 1541 | |
| 1542 // Returns the CPU time consumed by a given thread (in nanoseconds). | |
| 1543 // If thread_id == 0, CPU time for the current thread is returned. | |
| 1544 // If user_sys_cpu_time = true, user level and system CPU time of | |
| 1545 // a given thread is returned; otherwise, only user level CPU time | |
| 1546 // is returned. | |
| 1547 JVM_ENTRY(jlong, jmm_GetThreadCpuTimeWithKind(JNIEnv *env, jlong thread_id, jboolean user_sys_cpu_time)) | |
| 1548 if (!os::is_thread_cpu_time_supported()) { | |
| 1549 return -1; | |
| 1550 } | |
| 1551 | |
| 1552 if (thread_id < 0) { | |
| 1553 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1554 "Invalid thread ID", -1); | |
| 1555 } | |
| 1556 | |
| 1557 JavaThread* java_thread = NULL; | |
| 1558 if (thread_id == 0) { | |
| 1559 // current thread | |
| 1560 return os::current_thread_cpu_time(user_sys_cpu_time != 0); | |
| 1561 } else { | |
| 1562 MutexLockerEx ml(Threads_lock); | |
| 1563 java_thread = find_java_thread_from_id(thread_id); | |
| 1564 if (java_thread != NULL) { | |
| 1565 return os::thread_cpu_time((Thread*) java_thread, user_sys_cpu_time != 0); | |
| 1566 } | |
| 1567 } | |
| 1568 return -1; | |
| 1569 JVM_END | |
| 1570 | |
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1571 // Gets an array containing the CPU times consumed by a set of threads |
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1572 // (in nanoseconds). Each element of the array is the CPU time for the |
|
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1573 // thread ID specified in the corresponding entry in the given array |
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1574 // of thread IDs; or -1 if the thread does not exist or has terminated. |
|
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1575 // If user_sys_cpu_time = true, the sum of user level and system CPU time |
|
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1576 // for the given thread is returned; otherwise, only user level CPU time |
|
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1577 // is returned. |
|
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1578 JVM_ENTRY(void, jmm_GetThreadCpuTimesWithKind(JNIEnv *env, jlongArray ids, |
|
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1579 jlongArray timeArray, |
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1580 jboolean user_sys_cpu_time)) |
|
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1581 // Check if threads is null |
|
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1582 if (ids == NULL || timeArray == NULL) { |
|
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1583 THROW(vmSymbols::java_lang_NullPointerException()); |
|
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1584 } |
|
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|
1585 |
|
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1586 ResourceMark rm(THREAD); |
|
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1587 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(ids)); |
|
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1588 typeArrayHandle ids_ah(THREAD, ta); |
|
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1589 |
|
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1590 typeArrayOop tia = typeArrayOop(JNIHandles::resolve_non_null(timeArray)); |
|
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1591 typeArrayHandle timeArray_h(THREAD, tia); |
|
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1592 |
|
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1593 // validate the thread id array |
|
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1594 validate_thread_id_array(ids_ah, CHECK); |
|
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1595 |
|
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1596 // timeArray must be of the same length as the given array of thread IDs |
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1597 int num_threads = ids_ah->length(); |
|
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1598 if (num_threads != timeArray_h->length()) { |
|
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1599 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
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1600 "The length of the given long array does not match the length of " |
|
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1601 "the given array of thread IDs"); |
|
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1602 } |
|
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|
1603 |
|
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1604 MutexLockerEx ml(Threads_lock); |
|
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1605 for (int i = 0; i < num_threads; i++) { |
|
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1606 JavaThread* java_thread = find_java_thread_from_id(ids_ah->long_at(i)); |
|
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1607 if (java_thread != NULL) { |
|
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1608 timeArray_h->long_at_put(i, os::thread_cpu_time((Thread*)java_thread, |
|
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1609 user_sys_cpu_time != 0)); |
|
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1610 } |
|
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|
1611 } |
|
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1612 JVM_END |
|
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1613 |
| 0 | 1614 // Returns a String array of all VM global flag names |
| 1615 JVM_ENTRY(jobjectArray, jmm_GetVMGlobalNames(JNIEnv *env)) | |
| 1616 // last flag entry is always NULL, so subtract 1 | |
| 1617 int nFlags = (int) Flag::numFlags - 1; | |
| 1618 // allocate a temp array | |
| 1142 | 1619 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 1620 nFlags, CHECK_0); |
| 1621 objArrayHandle flags_ah(THREAD, r); | |
| 1622 int num_entries = 0; | |
| 1623 for (int i = 0; i < nFlags; i++) { | |
| 1624 Flag* flag = &Flag::flags[i]; | |
| 350 | 1625 // Exclude the locked (experimental, diagnostic) flags |
| 0 | 1626 if (flag->is_unlocked() || flag->is_unlocker()) { |
| 1627 Handle s = java_lang_String::create_from_str(flag->name, CHECK_0); | |
| 1628 flags_ah->obj_at_put(num_entries, s()); | |
| 1629 num_entries++; | |
| 1630 } | |
| 1631 } | |
| 1632 | |
| 1633 if (num_entries < nFlags) { | |
| 1634 // Return array of right length | |
| 1142 | 1635 objArrayOop res = oopFactory::new_objArray(SystemDictionary::String_klass(), num_entries, CHECK_0); |
| 0 | 1636 for(int i = 0; i < num_entries; i++) { |
| 1637 res->obj_at_put(i, flags_ah->obj_at(i)); | |
| 1638 } | |
| 1639 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1640 } | |
| 1641 | |
| 1642 return (jobjectArray)JNIHandles::make_local(env, flags_ah()); | |
| 1643 JVM_END | |
| 1644 | |
|
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1645 // Utility function used by jmm_GetVMGlobals. Returns false if flag type |
|
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1646 // can't be determined, true otherwise. If false is returned, then *global |
|
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1647 // will be incomplete and invalid. |
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1648 bool add_global_entry(JNIEnv* env, Handle name, jmmVMGlobal *global, Flag *flag, TRAPS) { |
| 0 | 1649 Handle flag_name; |
| 1650 if (name() == NULL) { | |
|
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1651 flag_name = java_lang_String::create_from_str(flag->name, CHECK_false); |
| 0 | 1652 } else { |
| 1653 flag_name = name; | |
| 1654 } | |
| 1655 global->name = (jstring)JNIHandles::make_local(env, flag_name()); | |
| 1656 | |
| 1657 if (flag->is_bool()) { | |
| 1658 global->value.z = flag->get_bool() ? JNI_TRUE : JNI_FALSE; | |
| 1659 global->type = JMM_VMGLOBAL_TYPE_JBOOLEAN; | |
| 1660 } else if (flag->is_intx()) { | |
| 1661 global->value.j = (jlong)flag->get_intx(); | |
| 1662 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
| 1663 } else if (flag->is_uintx()) { | |
| 1664 global->value.j = (jlong)flag->get_uintx(); | |
| 1665 global->type = JMM_VMGLOBAL_TYPE_JLONG; | |
|
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1666 } else if (flag->is_uint64_t()) { |
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1667 global->value.j = (jlong)flag->get_uint64_t(); |
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1668 global->type = JMM_VMGLOBAL_TYPE_JLONG; |
| 0 | 1669 } else if (flag->is_ccstr()) { |
|
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1670 Handle str = java_lang_String::create_from_str(flag->get_ccstr(), CHECK_false); |
| 0 | 1671 global->value.l = (jobject)JNIHandles::make_local(env, str()); |
| 1672 global->type = JMM_VMGLOBAL_TYPE_JSTRING; | |
|
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1673 } else { |
|
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1674 global->type = JMM_VMGLOBAL_TYPE_UNKNOWN; |
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1675 return false; |
| 0 | 1676 } |
| 1677 | |
| 1678 global->writeable = flag->is_writeable(); | |
| 1679 global->external = flag->is_external(); | |
| 1680 switch (flag->origin) { | |
| 1681 case DEFAULT: | |
| 1682 global->origin = JMM_VMGLOBAL_ORIGIN_DEFAULT; | |
| 1683 break; | |
| 1684 case COMMAND_LINE: | |
| 1685 global->origin = JMM_VMGLOBAL_ORIGIN_COMMAND_LINE; | |
| 1686 break; | |
| 1687 case ENVIRON_VAR: | |
| 1688 global->origin = JMM_VMGLOBAL_ORIGIN_ENVIRON_VAR; | |
| 1689 break; | |
| 1690 case CONFIG_FILE: | |
| 1691 global->origin = JMM_VMGLOBAL_ORIGIN_CONFIG_FILE; | |
| 1692 break; | |
| 1693 case MANAGEMENT: | |
| 1694 global->origin = JMM_VMGLOBAL_ORIGIN_MANAGEMENT; | |
| 1695 break; | |
| 1696 case ERGONOMIC: | |
| 1697 global->origin = JMM_VMGLOBAL_ORIGIN_ERGONOMIC; | |
| 1698 break; | |
| 1699 default: | |
| 1700 global->origin = JMM_VMGLOBAL_ORIGIN_OTHER; | |
| 1701 } | |
|
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1702 |
|
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1703 return true; |
| 0 | 1704 } |
| 1705 | |
| 1706 // Fill globals array of count length with jmmVMGlobal entries | |
| 1707 // specified by names. If names == NULL, fill globals array | |
| 1708 // with all Flags. Return value is number of entries | |
| 1709 // created in globals. | |
| 1710 // If a Flag with a given name in an array element does not | |
| 1711 // exist, globals[i].name will be set to NULL. | |
| 1712 JVM_ENTRY(jint, jmm_GetVMGlobals(JNIEnv *env, | |
| 1713 jobjectArray names, | |
| 1714 jmmVMGlobal *globals, | |
| 1715 jint count)) | |
| 1716 | |
| 1717 | |
| 1718 if (globals == NULL) { | |
| 1719 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1720 } | |
| 1721 | |
| 1722 ResourceMark rm(THREAD); | |
| 1723 | |
| 1724 if (names != NULL) { | |
| 1725 // return the requested globals | |
| 1726 objArrayOop ta = objArrayOop(JNIHandles::resolve_non_null(names)); | |
| 1727 objArrayHandle names_ah(THREAD, ta); | |
| 1728 // Make sure we have a String array | |
|
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1729 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass(); |
| 1142 | 1730 if (element_klass != SystemDictionary::String_klass()) { |
| 0 | 1731 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
| 1732 "Array element type is not String class", 0); | |
| 1733 } | |
| 1734 | |
| 1735 int names_length = names_ah->length(); | |
| 1736 int num_entries = 0; | |
| 1737 for (int i = 0; i < names_length && i < count; i++) { | |
| 1738 oop s = names_ah->obj_at(i); | |
| 1739 if (s == NULL) { | |
| 1740 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1741 } | |
| 1742 | |
| 1743 Handle sh(THREAD, s); | |
| 1744 char* str = java_lang_String::as_utf8_string(s); | |
| 1745 Flag* flag = Flag::find_flag(str, strlen(str)); | |
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1746 if (flag != NULL && |
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1747 add_global_entry(env, sh, &globals[i], flag, THREAD)) { |
| 0 | 1748 num_entries++; |
| 1749 } else { | |
| 1750 globals[i].name = NULL; | |
| 1751 } | |
| 1752 } | |
| 1753 return num_entries; | |
| 1754 } else { | |
| 1755 // return all globals if names == NULL | |
| 1756 | |
| 1757 // last flag entry is always NULL, so subtract 1 | |
| 1758 int nFlags = (int) Flag::numFlags - 1; | |
| 1759 Handle null_h; | |
| 1760 int num_entries = 0; | |
| 1761 for (int i = 0; i < nFlags && num_entries < count; i++) { | |
| 1762 Flag* flag = &Flag::flags[i]; | |
| 350 | 1763 // Exclude the locked (diagnostic, experimental) flags |
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1764 if ((flag->is_unlocked() || flag->is_unlocker()) && |
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1765 add_global_entry(env, null_h, &globals[num_entries], flag, THREAD)) { |
| 0 | 1766 num_entries++; |
| 1767 } | |
| 1768 } | |
| 1769 return num_entries; | |
| 1770 } | |
| 1771 JVM_END | |
| 1772 | |
| 1773 JVM_ENTRY(void, jmm_SetVMGlobal(JNIEnv *env, jstring flag_name, jvalue new_value)) | |
| 1774 ResourceMark rm(THREAD); | |
| 1775 | |
| 1776 oop fn = JNIHandles::resolve_external_guard(flag_name); | |
| 1777 if (fn == NULL) { | |
| 1778 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
| 1779 "The flag name cannot be null."); | |
| 1780 } | |
| 1781 char* name = java_lang_String::as_utf8_string(fn); | |
| 1782 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 1783 if (flag == NULL) { | |
| 1784 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1785 "Flag does not exist."); | |
| 1786 } | |
| 1787 if (!flag->is_writeable()) { | |
| 1788 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 1789 "This flag is not writeable."); | |
| 1790 } | |
| 1791 | |
| 1792 bool succeed; | |
| 1793 if (flag->is_bool()) { | |
| 1794 bool bvalue = (new_value.z == JNI_TRUE ? true : false); | |
| 1795 succeed = CommandLineFlags::boolAtPut(name, &bvalue, MANAGEMENT); | |
| 1796 } else if (flag->is_intx()) { | |
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1797 intx ivalue = (intx)new_value.j; |
| 0 | 1798 succeed = CommandLineFlags::intxAtPut(name, &ivalue, MANAGEMENT); |
| 1799 } else if (flag->is_uintx()) { | |
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1800 uintx uvalue = (uintx)new_value.j; |
| 0 | 1801 succeed = CommandLineFlags::uintxAtPut(name, &uvalue, MANAGEMENT); |
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1802 } else if (flag->is_uint64_t()) { |
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1803 uint64_t uvalue = (uint64_t)new_value.j; |
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1804 succeed = CommandLineFlags::uint64_tAtPut(name, &uvalue, MANAGEMENT); |
| 0 | 1805 } else if (flag->is_ccstr()) { |
| 1806 oop str = JNIHandles::resolve_external_guard(new_value.l); | |
| 1807 if (str == NULL) { | |
| 1808 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1809 } | |
| 1810 ccstr svalue = java_lang_String::as_utf8_string(str); | |
| 1811 succeed = CommandLineFlags::ccstrAtPut(name, &svalue, MANAGEMENT); | |
| 1812 } | |
| 1813 assert(succeed, "Setting flag should succeed"); | |
| 1814 JVM_END | |
| 1815 | |
| 1816 class ThreadTimesClosure: public ThreadClosure { | |
| 1817 private: | |
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1818 objArrayHandle _names_strings; |
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1819 char **_names_chars; |
| 0 | 1820 typeArrayOop _times; |
| 1821 int _names_len; | |
| 1822 int _times_len; | |
| 1823 int _count; | |
| 1824 | |
| 1825 public: | |
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1826 ThreadTimesClosure(objArrayHandle names, typeArrayOop times); |
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1827 ~ThreadTimesClosure(); |
| 0 | 1828 virtual void do_thread(Thread* thread); |
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1829 void do_unlocked(); |
| 0 | 1830 int count() { return _count; } |
| 1831 }; | |
| 1832 | |
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1833 ThreadTimesClosure::ThreadTimesClosure(objArrayHandle names, |
| 0 | 1834 typeArrayOop times) { |
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1835 assert(names() != NULL, "names was NULL"); |
| 0 | 1836 assert(times != NULL, "times was NULL"); |
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1837 _names_strings = names; |
| 0 | 1838 _names_len = names->length(); |
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1839 _names_chars = NEW_C_HEAP_ARRAY(char*, _names_len, mtInternal); |
| 0 | 1840 _times = times; |
| 1841 _times_len = times->length(); | |
| 1842 _count = 0; | |
| 1843 } | |
| 1844 | |
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1845 // |
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1846 // Called with Threads_lock held |
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1847 // |
| 0 | 1848 void ThreadTimesClosure::do_thread(Thread* thread) { |
| 1849 assert(thread != NULL, "thread was NULL"); | |
| 1850 | |
| 1851 // exclude externally visible JavaThreads | |
| 1852 if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) { | |
| 1853 return; | |
| 1854 } | |
| 1855 | |
| 1856 if (_count >= _names_len || _count >= _times_len) { | |
| 1857 // skip if the result array is not big enough | |
| 1858 return; | |
| 1859 } | |
| 1860 | |
| 1861 EXCEPTION_MARK; | |
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1862 ResourceMark rm(THREAD); // thread->name() uses ResourceArea |
| 0 | 1863 |
| 1864 assert(thread->name() != NULL, "All threads should have a name"); | |
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1865 _names_chars[_count] = strdup(thread->name()); |
| 0 | 1866 _times->long_at_put(_count, os::is_thread_cpu_time_supported() ? |
| 1867 os::thread_cpu_time(thread) : -1); | |
| 1868 _count++; | |
| 1869 } | |
| 1870 | |
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1871 // Called without Threads_lock, we can allocate String objects. |
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1872 void ThreadTimesClosure::do_unlocked() { |
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1873 |
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1874 EXCEPTION_MARK; |
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1875 for (int i = 0; i < _count; i++) { |
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1876 Handle s = java_lang_String::create_from_str(_names_chars[i], CHECK); |
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1877 _names_strings->obj_at_put(i, s()); |
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1878 } |
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1879 } |
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1880 |
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1881 ThreadTimesClosure::~ThreadTimesClosure() { |
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1882 for (int i = 0; i < _count; i++) { |
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1883 free(_names_chars[i]); |
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1884 } |
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1885 FREE_C_HEAP_ARRAY(char *, _names_chars, mtInternal); |
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1886 } |
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1887 |
| 0 | 1888 // Fills names with VM internal thread names and times with the corresponding |
| 1889 // CPU times. If names or times is NULL, a NullPointerException is thrown. | |
| 1890 // If the element type of names is not String, an IllegalArgumentException is | |
| 1891 // thrown. | |
| 1892 // If an array is not large enough to hold all the entries, only the entries | |
| 1893 // that fit will be returned. Return value is the number of VM internal | |
| 1894 // threads entries. | |
| 1895 JVM_ENTRY(jint, jmm_GetInternalThreadTimes(JNIEnv *env, | |
| 1896 jobjectArray names, | |
| 1897 jlongArray times)) | |
| 1898 if (names == NULL || times == NULL) { | |
| 1899 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1900 } | |
| 1901 objArrayOop na = objArrayOop(JNIHandles::resolve_non_null(names)); | |
| 1902 objArrayHandle names_ah(THREAD, na); | |
| 1903 | |
| 1904 // Make sure we have a String array | |
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1905 Klass* element_klass = ObjArrayKlass::cast(names_ah->klass())->element_klass(); |
| 1142 | 1906 if (element_klass != SystemDictionary::String_klass()) { |
| 0 | 1907 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
| 1908 "Array element type is not String class", 0); | |
| 1909 } | |
| 1910 | |
| 1911 typeArrayOop ta = typeArrayOop(JNIHandles::resolve_non_null(times)); | |
| 1912 typeArrayHandle times_ah(THREAD, ta); | |
| 1913 | |
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1914 ThreadTimesClosure ttc(names_ah, times_ah()); |
| 0 | 1915 { |
| 1916 MutexLockerEx ml(Threads_lock); | |
| 1917 Threads::threads_do(&ttc); | |
| 1918 } | |
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1919 ttc.do_unlocked(); |
| 0 | 1920 return ttc.count(); |
| 1921 JVM_END | |
| 1922 | |
| 1923 static Handle find_deadlocks(bool object_monitors_only, TRAPS) { | |
| 1924 ResourceMark rm(THREAD); | |
| 1925 | |
| 1926 VM_FindDeadlocks op(!object_monitors_only /* also check concurrent locks? */); | |
| 1927 VMThread::execute(&op); | |
| 1928 | |
| 1929 DeadlockCycle* deadlocks = op.result(); | |
| 1930 if (deadlocks == NULL) { | |
| 1931 // no deadlock found and return | |
| 1932 return Handle(); | |
| 1933 } | |
| 1934 | |
| 1935 int num_threads = 0; | |
| 1936 DeadlockCycle* cycle; | |
| 1937 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
| 1938 num_threads += cycle->num_threads(); | |
| 1939 } | |
| 1940 | |
| 1142 | 1941 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NH); |
| 0 | 1942 objArrayHandle threads_ah(THREAD, r); |
| 1943 | |
| 1944 int index = 0; | |
| 1945 for (cycle = deadlocks; cycle != NULL; cycle = cycle->next()) { | |
| 1946 GrowableArray<JavaThread*>* deadlock_threads = cycle->threads(); | |
| 1947 int len = deadlock_threads->length(); | |
| 1948 for (int i = 0; i < len; i++) { | |
| 1949 threads_ah->obj_at_put(index, deadlock_threads->at(i)->threadObj()); | |
| 1950 index++; | |
| 1951 } | |
| 1952 } | |
| 1953 return threads_ah; | |
| 1954 } | |
| 1955 | |
| 1956 // Finds cycles of threads that are deadlocked involved in object monitors | |
| 1957 // and JSR-166 synchronizers. | |
| 1958 // Returns an array of Thread objects which are in deadlock, if any. | |
| 1959 // Otherwise, returns NULL. | |
| 1960 // | |
| 1961 // Input parameter: | |
| 1962 // object_monitors_only - if true, only check object monitors | |
| 1963 // | |
| 1964 JVM_ENTRY(jobjectArray, jmm_FindDeadlockedThreads(JNIEnv *env, jboolean object_monitors_only)) | |
| 1965 Handle result = find_deadlocks(object_monitors_only != 0, CHECK_0); | |
| 1966 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1967 JVM_END | |
| 1968 | |
| 1969 // Finds cycles of threads that are deadlocked on monitor locks | |
| 1970 // Returns an array of Thread objects which are in deadlock, if any. | |
| 1971 // Otherwise, returns NULL. | |
| 1972 JVM_ENTRY(jobjectArray, jmm_FindMonitorDeadlockedThreads(JNIEnv *env)) | |
| 1973 Handle result = find_deadlocks(true, CHECK_0); | |
| 1974 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1975 JVM_END | |
| 1976 | |
| 1977 // Gets the information about GC extension attributes including | |
| 1978 // the name of the attribute, its type, and a short description. | |
| 1979 // | |
| 1980 // Input parameters: | |
| 1981 // mgr - GC memory manager | |
| 1982 // info - caller allocated array of jmmExtAttributeInfo | |
| 1983 // count - number of elements of the info array | |
| 1984 // | |
| 1985 // Returns the number of GC extension attributes filled in the info array; or | |
| 1986 // -1 if info is not big enough | |
| 1987 // | |
| 1988 JVM_ENTRY(jint, jmm_GetGCExtAttributeInfo(JNIEnv *env, jobject mgr, jmmExtAttributeInfo* info, jint count)) | |
| 1989 // All GC memory managers have 1 attribute (number of GC threads) | |
| 1990 if (count == 0) { | |
| 1991 return 0; | |
| 1992 } | |
| 1993 | |
| 1994 if (info == NULL) { | |
| 1995 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 1996 } | |
| 1997 | |
| 1998 info[0].name = "GcThreadCount"; | |
| 1999 info[0].type = 'I'; | |
| 2000 info[0].description = "Number of GC threads"; | |
| 2001 return 1; | |
| 2002 JVM_END | |
| 2003 | |
| 2004 // verify the given array is an array of java/lang/management/MemoryUsage objects | |
| 2005 // of a given length and return the objArrayOop | |
| 2006 static objArrayOop get_memory_usage_objArray(jobjectArray array, int length, TRAPS) { | |
| 2007 if (array == NULL) { | |
| 2008 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 2009 } | |
| 2010 | |
| 2011 objArrayOop oa = objArrayOop(JNIHandles::resolve_non_null(array)); | |
| 2012 objArrayHandle array_h(THREAD, oa); | |
| 2013 | |
| 2014 // array must be of the given length | |
| 2015 if (length != array_h->length()) { | |
| 2016 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 2017 "The length of the given MemoryUsage array does not match the number of memory pools.", 0); | |
| 2018 } | |
| 2019 | |
| 2020 // check if the element of array is of type MemoryUsage class | |
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2021 Klass* usage_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_0); |
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2022 Klass* element_klass = ObjArrayKlass::cast(array_h->klass())->element_klass(); |
| 0 | 2023 if (element_klass != usage_klass) { |
| 2024 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), | |
| 2025 "The element type is not MemoryUsage class", 0); | |
| 2026 } | |
| 2027 | |
| 2028 return array_h(); | |
| 2029 } | |
| 2030 | |
| 2031 // Gets the statistics of the last GC of a given GC memory manager. | |
| 2032 // Input parameters: | |
| 2033 // obj - GarbageCollectorMXBean object | |
| 2034 // gc_stat - caller allocated jmmGCStat where: | |
| 2035 // a. before_gc_usage - array of MemoryUsage objects | |
| 2036 // b. after_gc_usage - array of MemoryUsage objects | |
| 2037 // c. gc_ext_attributes_values_size is set to the | |
| 2038 // gc_ext_attribute_values array allocated | |
| 2039 // d. gc_ext_attribute_values is a caller allocated array of jvalue. | |
| 2040 // | |
| 2041 // On return, | |
| 2042 // gc_index == 0 indicates no GC statistics available | |
| 2043 // | |
| 2044 // before_gc_usage and after_gc_usage - filled with per memory pool | |
| 2045 // before and after GC usage in the same order as the memory pools | |
| 2046 // returned by GetMemoryPools for a given GC memory manager. | |
| 2047 // num_gc_ext_attributes indicates the number of elements in | |
| 2048 // the gc_ext_attribute_values array is filled; or | |
| 2049 // -1 if the gc_ext_attributes_values array is not big enough | |
| 2050 // | |
| 2051 JVM_ENTRY(void, jmm_GetLastGCStat(JNIEnv *env, jobject obj, jmmGCStat *gc_stat)) | |
| 2052 ResourceMark rm(THREAD); | |
| 2053 | |
| 2054 if (gc_stat->gc_ext_attribute_values_size > 0 && gc_stat->gc_ext_attribute_values == NULL) { | |
| 2055 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2056 } | |
| 2057 | |
| 2058 // Get the GCMemoryManager | |
| 2059 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); | |
| 2060 | |
| 2061 // Make a copy of the last GC statistics | |
| 2062 // GC may occur while constructing the last GC information | |
| 2063 int num_pools = MemoryService::num_memory_pools(); | |
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2064 GCStatInfo stat(num_pools); |
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2065 if (mgr->get_last_gc_stat(&stat) == 0) { |
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2066 gc_stat->gc_index = 0; |
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2067 return; |
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2068 } |
| 0 | 2069 |
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2070 gc_stat->gc_index = stat.gc_index(); |
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2071 gc_stat->start_time = Management::ticks_to_ms(stat.start_time()); |
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2072 gc_stat->end_time = Management::ticks_to_ms(stat.end_time()); |
| 0 | 2073 |
| 2074 // Current implementation does not have GC extension attributes | |
| 2075 gc_stat->num_gc_ext_attributes = 0; | |
| 2076 | |
| 2077 // Fill the arrays of MemoryUsage objects with before and after GC | |
| 2078 // per pool memory usage | |
| 2079 objArrayOop bu = get_memory_usage_objArray(gc_stat->usage_before_gc, | |
| 2080 num_pools, | |
| 2081 CHECK); | |
| 2082 objArrayHandle usage_before_gc_ah(THREAD, bu); | |
| 2083 | |
| 2084 objArrayOop au = get_memory_usage_objArray(gc_stat->usage_after_gc, | |
| 2085 num_pools, | |
| 2086 CHECK); | |
| 2087 objArrayHandle usage_after_gc_ah(THREAD, au); | |
| 2088 | |
| 2089 for (int i = 0; i < num_pools; i++) { | |
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2090 Handle before_usage = MemoryService::create_MemoryUsage_obj(stat.before_gc_usage_for_pool(i), CHECK); |
| 0 | 2091 Handle after_usage; |
| 2092 | |
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2093 MemoryUsage u = stat.after_gc_usage_for_pool(i); |
| 0 | 2094 if (u.max_size() == 0 && u.used() > 0) { |
| 2095 // If max size == 0, this pool is a survivor space. | |
| 2096 // Set max size = -1 since the pools will be swapped after GC. | |
| 2097 MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1); | |
| 2098 after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK); | |
| 2099 } else { | |
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2100 after_usage = MemoryService::create_MemoryUsage_obj(stat.after_gc_usage_for_pool(i), CHECK); |
| 0 | 2101 } |
| 2102 usage_before_gc_ah->obj_at_put(i, before_usage()); | |
| 2103 usage_after_gc_ah->obj_at_put(i, after_usage()); | |
| 2104 } | |
| 2105 | |
| 2106 if (gc_stat->gc_ext_attribute_values_size > 0) { | |
| 2107 // Current implementation only has 1 attribute (number of GC threads) | |
| 2108 // The type is 'I' | |
| 2109 gc_stat->gc_ext_attribute_values[0].i = mgr->num_gc_threads(); | |
| 2110 } | |
| 2111 JVM_END | |
| 2112 | |
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2113 JVM_ENTRY(void, jmm_SetGCNotificationEnabled(JNIEnv *env, jobject obj, jboolean enabled)) |
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2114 ResourceMark rm(THREAD); |
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2115 // Get the GCMemoryManager |
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2116 GCMemoryManager* mgr = get_gc_memory_manager_from_jobject(obj, CHECK); |
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2117 mgr->set_notification_enabled(enabled?true:false); |
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2118 JVM_END |
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2119 |
| 0 | 2120 // Dump heap - Returns 0 if succeeds. |
| 2121 JVM_ENTRY(jint, jmm_DumpHeap0(JNIEnv *env, jstring outputfile, jboolean live)) | |
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2122 #if INCLUDE_SERVICES |
| 0 | 2123 ResourceMark rm(THREAD); |
| 2124 oop on = JNIHandles::resolve_external_guard(outputfile); | |
| 2125 if (on == NULL) { | |
| 2126 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
| 2127 "Output file name cannot be null.", -1); | |
| 2128 } | |
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2129 char* name = java_lang_String::as_platform_dependent_str(on, CHECK_(-1)); |
| 0 | 2130 if (name == NULL) { |
| 2131 THROW_MSG_(vmSymbols::java_lang_NullPointerException(), | |
| 2132 "Output file name cannot be null.", -1); | |
| 2133 } | |
| 2134 HeapDumper dumper(live ? true : false); | |
| 2135 if (dumper.dump(name) != 0) { | |
| 2136 const char* errmsg = dumper.error_as_C_string(); | |
| 2137 THROW_MSG_(vmSymbols::java_io_IOException(), errmsg, -1); | |
| 2138 } | |
| 2139 return 0; | |
|
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2140 #else // INCLUDE_SERVICES |
| 0 | 2141 return -1; |
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2142 #endif // INCLUDE_SERVICES |
| 0 | 2143 JVM_END |
| 2144 | |
| 4133 | 2145 JVM_ENTRY(jobjectArray, jmm_GetDiagnosticCommands(JNIEnv *env)) |
| 2146 ResourceMark rm(THREAD); | |
| 2147 GrowableArray<const char *>* dcmd_list = DCmdFactory::DCmd_list(); | |
| 2148 objArrayOop cmd_array_oop = oopFactory::new_objArray(SystemDictionary::String_klass(), | |
| 2149 dcmd_list->length(), CHECK_NULL); | |
| 2150 objArrayHandle cmd_array(THREAD, cmd_array_oop); | |
| 2151 for (int i = 0; i < dcmd_list->length(); i++) { | |
| 2152 oop cmd_name = java_lang_String::create_oop_from_str(dcmd_list->at(i), CHECK_NULL); | |
| 2153 cmd_array->obj_at_put(i, cmd_name); | |
| 2154 } | |
| 2155 return (jobjectArray) JNIHandles::make_local(env, cmd_array()); | |
| 2156 JVM_END | |
| 2157 | |
| 2158 JVM_ENTRY(void, jmm_GetDiagnosticCommandInfo(JNIEnv *env, jobjectArray cmds, | |
| 2159 dcmdInfo* infoArray)) | |
| 2160 if (cmds == NULL || infoArray == NULL) { | |
| 2161 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2162 } | |
| 2163 | |
| 2164 ResourceMark rm(THREAD); | |
| 2165 | |
| 2166 objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(cmds)); | |
| 2167 objArrayHandle cmds_ah(THREAD, ca); | |
| 2168 | |
| 2169 // Make sure we have a String array | |
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2170 Klass* element_klass = ObjArrayKlass::cast(cmds_ah->klass())->element_klass(); |
| 4133 | 2171 if (element_klass != SystemDictionary::String_klass()) { |
| 2172 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 2173 "Array element type is not String class"); | |
| 2174 } | |
| 2175 | |
| 2176 GrowableArray<DCmdInfo *>* info_list = DCmdFactory::DCmdInfo_list(); | |
| 2177 | |
| 2178 int num_cmds = cmds_ah->length(); | |
| 2179 for (int i = 0; i < num_cmds; i++) { | |
| 2180 oop cmd = cmds_ah->obj_at(i); | |
| 2181 if (cmd == NULL) { | |
| 2182 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
| 2183 "Command name cannot be null."); | |
| 2184 } | |
| 2185 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
| 2186 if (cmd_name == NULL) { | |
| 2187 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
| 2188 "Command name cannot be null."); | |
| 2189 } | |
| 2190 int pos = info_list->find((void*)cmd_name,DCmdInfo::by_name); | |
| 2191 if (pos == -1) { | |
| 2192 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 2193 "Unknown diagnostic command"); | |
| 2194 } | |
| 2195 DCmdInfo* info = info_list->at(pos); | |
| 2196 infoArray[i].name = info->name(); | |
| 2197 infoArray[i].description = info->description(); | |
| 2198 infoArray[i].impact = info->impact(); | |
| 2199 infoArray[i].num_arguments = info->num_arguments(); | |
| 2200 infoArray[i].enabled = info->is_enabled(); | |
| 2201 } | |
| 2202 JVM_END | |
| 2203 | |
| 2204 JVM_ENTRY(void, jmm_GetDiagnosticCommandArgumentsInfo(JNIEnv *env, | |
| 2205 jstring command, dcmdArgInfo* infoArray)) | |
| 2206 ResourceMark rm(THREAD); | |
| 2207 oop cmd = JNIHandles::resolve_external_guard(command); | |
| 2208 if (cmd == NULL) { | |
| 2209 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
| 2210 "Command line cannot be null."); | |
| 2211 } | |
| 2212 char* cmd_name = java_lang_String::as_utf8_string(cmd); | |
| 2213 if (cmd_name == NULL) { | |
| 2214 THROW_MSG(vmSymbols::java_lang_NullPointerException(), | |
| 2215 "Command line content cannot be null."); | |
| 2216 } | |
| 2217 DCmd* dcmd = NULL; | |
| 2218 DCmdFactory*factory = DCmdFactory::factory(cmd_name, strlen(cmd_name)); | |
| 2219 if (factory != NULL) { | |
| 2220 dcmd = factory->create_resource_instance(NULL); | |
| 2221 } | |
| 2222 if (dcmd == NULL) { | |
| 2223 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), | |
| 2224 "Unknown diagnostic command"); | |
| 2225 } | |
| 2226 DCmdMark mark(dcmd); | |
| 2227 GrowableArray<DCmdArgumentInfo*>* array = dcmd->argument_info_array(); | |
| 2228 if (array->length() == 0) { | |
| 2229 return; | |
| 2230 } | |
| 2231 for (int i = 0; i < array->length(); i++) { | |
| 2232 infoArray[i].name = array->at(i)->name(); | |
| 2233 infoArray[i].description = array->at(i)->description(); | |
| 2234 infoArray[i].type = array->at(i)->type(); | |
| 2235 infoArray[i].default_string = array->at(i)->default_string(); | |
| 2236 infoArray[i].mandatory = array->at(i)->is_mandatory(); | |
| 2237 infoArray[i].option = array->at(i)->is_option(); | |
| 2238 infoArray[i].position = array->at(i)->position(); | |
| 2239 } | |
| 2240 return; | |
| 2241 JVM_END | |
| 2242 | |
| 2243 JVM_ENTRY(jstring, jmm_ExecuteDiagnosticCommand(JNIEnv *env, jstring commandline)) | |
| 2244 ResourceMark rm(THREAD); | |
| 2245 oop cmd = JNIHandles::resolve_external_guard(commandline); | |
| 2246 if (cmd == NULL) { | |
| 2247 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
| 2248 "Command line cannot be null."); | |
| 2249 } | |
| 2250 char* cmdline = java_lang_String::as_utf8_string(cmd); | |
| 2251 if (cmdline == NULL) { | |
| 2252 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), | |
| 2253 "Command line content cannot be null."); | |
| 2254 } | |
| 2255 bufferedStream output; | |
| 2256 DCmd::parse_and_execute(&output, cmdline, ' ', CHECK_NULL); | |
| 2257 oop result = java_lang_String::create_oop_from_str(output.as_string(), CHECK_NULL); | |
| 2258 return (jstring) JNIHandles::make_local(env, result); | |
| 2259 JVM_END | |
| 2260 | |
| 0 | 2261 jlong Management::ticks_to_ms(jlong ticks) { |
| 2262 assert(os::elapsed_frequency() > 0, "Must be non-zero"); | |
| 2263 return (jlong)(((double)ticks / (double)os::elapsed_frequency()) | |
| 2264 * (double)1000.0); | |
| 2265 } | |
| 2266 | |
| 2267 const struct jmmInterface_1_ jmm_interface = { | |
| 2268 NULL, | |
| 2269 NULL, | |
| 2270 jmm_GetVersion, | |
| 2271 jmm_GetOptionalSupport, | |
| 2272 jmm_GetInputArguments, | |
| 2273 jmm_GetThreadInfo, | |
| 2274 jmm_GetInputArgumentArray, | |
| 2275 jmm_GetMemoryPools, | |
| 2276 jmm_GetMemoryManagers, | |
| 2277 jmm_GetMemoryPoolUsage, | |
| 2278 jmm_GetPeakMemoryPoolUsage, | |
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2279 jmm_GetThreadAllocatedMemory, |
| 0 | 2280 jmm_GetMemoryUsage, |
| 2281 jmm_GetLongAttribute, | |
| 2282 jmm_GetBoolAttribute, | |
| 2283 jmm_SetBoolAttribute, | |
| 2284 jmm_GetLongAttributes, | |
| 2285 jmm_FindMonitorDeadlockedThreads, | |
| 2286 jmm_GetThreadCpuTime, | |
| 2287 jmm_GetVMGlobalNames, | |
| 2288 jmm_GetVMGlobals, | |
| 2289 jmm_GetInternalThreadTimes, | |
| 2290 jmm_ResetStatistic, | |
| 2291 jmm_SetPoolSensor, | |
| 2292 jmm_SetPoolThreshold, | |
| 2293 jmm_GetPoolCollectionUsage, | |
| 2294 jmm_GetGCExtAttributeInfo, | |
| 2295 jmm_GetLastGCStat, | |
| 2296 jmm_GetThreadCpuTimeWithKind, | |
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2297 jmm_GetThreadCpuTimesWithKind, |
| 0 | 2298 jmm_DumpHeap0, |
| 2299 jmm_FindDeadlockedThreads, | |
| 2300 jmm_SetVMGlobal, | |
| 2301 NULL, | |
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2302 jmm_DumpThreads, |
| 4133 | 2303 jmm_SetGCNotificationEnabled, |
| 2304 jmm_GetDiagnosticCommands, | |
| 2305 jmm_GetDiagnosticCommandInfo, | |
| 2306 jmm_GetDiagnosticCommandArgumentsInfo, | |
| 2307 jmm_ExecuteDiagnosticCommand | |
| 0 | 2308 }; |
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2309 #endif // INCLUDE_MANAGEMENT |
| 0 | 2310 |
| 2311 void* Management::get_jmm_interface(int version) { | |
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2312 #if INCLUDE_MANAGEMENT |
| 0 | 2313 if (version == JMM_VERSION_1_0) { |
| 2314 return (void*) &jmm_interface; | |
| 2315 } | |
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2316 #endif // INCLUDE_MANAGEMENT |
| 0 | 2317 return NULL; |
| 2318 } |