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comparison src/share/vm/runtime/task.cpp @ 14392:b5c8a61d7fa0

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Merge
author kvn
date Fri, 21 Jun 2013 15:56:24 -0700
parents f2110083203d
children 606acabe7b5c
comparison
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14391:d2907f74462e 14392:b5c8a61d7fa0
1 /* 1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 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.
112 112
113 PeriodicTask::~PeriodicTask() { 113 PeriodicTask::~PeriodicTask() {
114 disenroll(); 114 disenroll();
115 } 115 }
116 116
117 /* enroll could be called from a JavaThread, so we have to check for
118 * safepoint when taking the lock to avoid deadlocking */
117 void PeriodicTask::enroll() { 119 void PeriodicTask::enroll() {
118 MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ? 120 MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ?
119 NULL : PeriodicTask_lock, Mutex::_no_safepoint_check_flag); 121 NULL : PeriodicTask_lock);
120 122
121 if (_num_tasks == PeriodicTask::max_tasks) { 123 if (_num_tasks == PeriodicTask::max_tasks) {
122 fatal("Overflow in PeriodicTask table"); 124 fatal("Overflow in PeriodicTask table");
123 } 125 }
124 _tasks[_num_tasks++] = this; 126 _tasks[_num_tasks++] = this;
129 } else { 131 } else {
130 WatcherThread::start(); 132 WatcherThread::start();
131 } 133 }
132 } 134 }
133 135
136 /* disenroll could be called from a JavaThread, so we have to check for
137 * safepoint when taking the lock to avoid deadlocking */
134 void PeriodicTask::disenroll() { 138 void PeriodicTask::disenroll() {
135 MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ? 139 MutexLockerEx ml(PeriodicTask_lock->owned_by_self() ?
136 NULL : PeriodicTask_lock, Mutex::_no_safepoint_check_flag); 140 NULL : PeriodicTask_lock);
137 141
138 int index; 142 int index;
139 for(index = 0; index < _num_tasks && _tasks[index] != this; index++) 143 for(index = 0; index < _num_tasks && _tasks[index] != this; index++)
140 ; 144 ;
141 145