1 /* |
1 /* |
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 2012, 2013, 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. |
27 #include "runtime/javaCalls.hpp" |
27 #include "runtime/javaCalls.hpp" |
28 #include "runtime/serviceThread.hpp" |
28 #include "runtime/serviceThread.hpp" |
29 #include "runtime/mutexLocker.hpp" |
29 #include "runtime/mutexLocker.hpp" |
30 #include "prims/jvmtiImpl.hpp" |
30 #include "prims/jvmtiImpl.hpp" |
31 #include "services/gcNotifier.hpp" |
31 #include "services/gcNotifier.hpp" |
|
32 #include "services/diagnosticArgument.hpp" |
|
33 #include "services/diagnosticFramework.hpp" |
32 |
34 |
33 ServiceThread* ServiceThread::_instance = NULL; |
35 ServiceThread* ServiceThread::_instance = NULL; |
34 |
36 |
35 void ServiceThread::initialize() { |
37 void ServiceThread::initialize() { |
36 EXCEPTION_MARK; |
38 EXCEPTION_MARK; |
81 void ServiceThread::service_thread_entry(JavaThread* jt, TRAPS) { |
83 void ServiceThread::service_thread_entry(JavaThread* jt, TRAPS) { |
82 while (true) { |
84 while (true) { |
83 bool sensors_changed = false; |
85 bool sensors_changed = false; |
84 bool has_jvmti_events = false; |
86 bool has_jvmti_events = false; |
85 bool has_gc_notification_event = false; |
87 bool has_gc_notification_event = false; |
|
88 bool has_dcmd_notification_event = false; |
86 JvmtiDeferredEvent jvmti_event; |
89 JvmtiDeferredEvent jvmti_event; |
87 { |
90 { |
88 // Need state transition ThreadBlockInVM so that this thread |
91 // Need state transition ThreadBlockInVM so that this thread |
89 // will be handled by safepoint correctly when this thread is |
92 // will be handled by safepoint correctly when this thread is |
90 // notified at a safepoint. |
93 // notified at a safepoint. |
96 ThreadBlockInVM tbivm(jt); |
99 ThreadBlockInVM tbivm(jt); |
97 |
100 |
98 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
101 MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
99 while (!(sensors_changed = LowMemoryDetector::has_pending_requests()) && |
102 while (!(sensors_changed = LowMemoryDetector::has_pending_requests()) && |
100 !(has_jvmti_events = JvmtiDeferredEventQueue::has_events()) && |
103 !(has_jvmti_events = JvmtiDeferredEventQueue::has_events()) && |
101 !(has_gc_notification_event = GCNotifier::has_event())) { |
104 !(has_gc_notification_event = GCNotifier::has_event()) && |
|
105 !(has_dcmd_notification_event = DCmdFactory::has_pending_jmx_notification())) { |
102 // wait until one of the sensors has pending requests, or there is a |
106 // wait until one of the sensors has pending requests, or there is a |
103 // pending JVMTI event or JMX GC notification to post |
107 // pending JVMTI event or JMX GC notification to post |
104 Service_lock->wait(Mutex::_no_safepoint_check_flag); |
108 Service_lock->wait(Mutex::_no_safepoint_check_flag); |
105 } |
109 } |
106 |
110 |
118 } |
122 } |
119 |
123 |
120 if(has_gc_notification_event) { |
124 if(has_gc_notification_event) { |
121 GCNotifier::sendNotification(CHECK); |
125 GCNotifier::sendNotification(CHECK); |
122 } |
126 } |
|
127 |
|
128 if(has_dcmd_notification_event) { |
|
129 DCmdFactory::send_notification(CHECK); |
|
130 } |
123 } |
131 } |
124 } |
132 } |
125 |
133 |
126 bool ServiceThread::is_service_thread(Thread* thread) { |
134 bool ServiceThread::is_service_thread(Thread* thread) { |
127 return thread == _instance; |
135 return thread == _instance; |