mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-10-29 15:21:53 +00:00
6afb44e712
125606 rmunteanu: Merged 5.1.1 (5.1.1) to 5.1.N (5.1.2)
125515 slanglois: MNT-16155 Update source headers - add new Copyrights for Java and JSP source files + automatic check in the build
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@125788 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
135 lines
2.9 KiB
Java
135 lines
2.9 KiB
Java
/*
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* #%L
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* Alfresco Repository
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* %%
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* Copyright (C) 2005 - 2016 Alfresco Software Limited
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* %%
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* This file is part of the Alfresco software.
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* If the software was purchased under a paid Alfresco license, the terms of
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* the paid license agreement will prevail. Otherwise, the software is
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* provided under the following open source license terms:
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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* #L%
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*/
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package org.alfresco.filesys.repo;
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import java.util.LinkedList;
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/**
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* Node Event Queue Class
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*
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* @author gkspencer
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*/
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public class NodeEventQueue {
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// List of node events
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private LinkedList<NodeEvent> m_queue;
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/**
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* Class constructor
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*/
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public NodeEventQueue() {
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m_queue = new LinkedList<NodeEvent>();
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}
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/**
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* Return the number of events in the queue
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*
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* @return int
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*/
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public final synchronized int numberOfEvents() {
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return m_queue.size();
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}
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/**
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* Add an event to the queue
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*
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* @param event NodeEvent
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*/
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public final synchronized void addEvent(NodeEvent event) {
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// Add the event to the queue
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m_queue.add( event);
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// Notify a listener that there is an event to process
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notify();
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}
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/**
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* Remove an event from the head of the queue
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*
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* @return NodeEvent
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* @exception InterruptedException
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*/
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public final synchronized NodeEvent removeEvent()
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throws InterruptedException {
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// Wait until there is an event
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waitWhileEmpty();
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// Get the event from the head of the queue
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return m_queue.removeFirst();
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}
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/**
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* Remove an event from the queue, without waiting if there are no events in the queue
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*
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* @return NodeEvent
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*/
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public final synchronized NodeEvent removeSessionNoWait() {
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NodeEvent event = null;
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if ( m_queue.size() > 0)
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event = m_queue.removeFirst();
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return event;
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}
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/**
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* Wait for an event to be added to the queue
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*
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* @exception InterruptedException
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*/
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public final synchronized void waitWhileEmpty()
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throws InterruptedException {
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// Wait until an event arrives on the queue
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while (m_queue.size() == 0)
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wait();
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}
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/**
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* Wait for the event queue to be emptied
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*
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* @exception InterruptedException
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*/
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public final synchronized void waitUntilEmpty()
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throws InterruptedException {
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// Wait until the event queue is empty
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while (m_queue.size() != 0)
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wait();
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}
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}
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