Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/services/lowMemoryDetector.cpp
src/share/vm/services/lowMemoryDetector.cpp
- changeset 8876
- 8a9294fa59d6
- parent 6680
- 78bbf4d43a14
- child 9041
- 95a08233f46c
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| 8778:68758c5ab0c1 | 8876:8a9294fa59d6 |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 296 | 296 |
| 297 if (_sensor_obj != NULL) { | 297 if (_sensor_obj != NULL) { |
| 298 Klass* k = Management::sun_management_Sensor_klass(CHECK); | 298 Klass* k = Management::sun_management_Sensor_klass(CHECK); |
| 299 instanceKlassHandle sensorKlass (THREAD, k); | 299 instanceKlassHandle sensorKlass (THREAD, k); |
| 300 Handle sensor_h(THREAD, _sensor_obj); | 300 Handle sensor_h(THREAD, _sensor_obj); |
| 301 Handle usage_h = MemoryService::create_MemoryUsage_obj(_usage, CHECK); | 301 |
| 302 Symbol* trigger_method_signature; | |
| 302 | 303 |
| 303 JavaValue result(T_VOID); | 304 JavaValue result(T_VOID); |
| 304 JavaCallArguments args(sensor_h); | 305 JavaCallArguments args(sensor_h); |
| 305 args.push_int((int) count); | 306 args.push_int((int) count); |
| 306 args.push_oop(usage_h); | 307 |
| 308 Handle usage_h = MemoryService::create_MemoryUsage_obj(_usage, THREAD); | |
| 309 // Call Sensor::trigger(int, MemoryUsage) to send notification to listeners. | |
| 310 // When OOME occurs and fails to allocate MemoryUsage object, call | |
| 311 // Sensor::trigger(int) instead. The pending request will be processed | |
| 312 // but no notification will be sent. | |
| 313 if (HAS_PENDING_EXCEPTION) { | |
| 314 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOME here"); | |
| 315 CLEAR_PENDING_EXCEPTION; | |
| 316 trigger_method_signature = vmSymbols::int_void_signature(); | |
| 317 } else { | |
| 318 trigger_method_signature = vmSymbols::trigger_method_signature(); | |
| 319 args.push_oop(usage_h); | |
| 320 } | |
| 307 | 321 |
| 308 JavaCalls::call_virtual(&result, | 322 JavaCalls::call_virtual(&result, |
| 309 sensorKlass, | 323 sensorKlass, |
| 310 vmSymbols::trigger_name(), | 324 vmSymbols::trigger_name(), |
| 311 vmSymbols::trigger_method_signature(), | 325 trigger_method_signature, |
| 312 &args, | 326 &args, |
| 313 CHECK); | 327 THREAD); |
| 328 | |
| 329 if (HAS_PENDING_EXCEPTION) { | |
| 330 // We just clear the OOM pending exception that we might have encountered | |
| 331 // in Java's tiggerAction(), and continue with updating the counters since | |
| 332 // the Java counters have been updated too. | |
| 333 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOME here"); | |
| 334 CLEAR_PENDING_EXCEPTION; | |
| 335 } | |
| 314 } | 336 } |
| 315 | 337 |
| 316 { | 338 { |
| 317 // Holds Service_lock and update the sensor state | 339 // Holds Service_lock and update the sensor state |
| 318 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); | 340 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
