Author: tabish
Date: Wed Apr 24 23:21:52 2013
New Revision: 1471766
URL: http://svn.apache.org/r1471766
Log:
fixes for:
https://issues.apache.org/jira/browse/AMQNET-431
https://issues.apache.org/jira/browse/AMQNET-430
https://issues.apache.org/jira/browse/AMQNET-429
https://issues.apache.org/jira/browse/AMQNET-428
https://issues.apache.org/jira/browse/AMQNET-329
Add a Scheduler class for use in Connection to handle delayed an repeating
tasks such as non-blocking redelivery.
Added:
activemq/activemq-dotnet/Apache.NMS.ActiveMQ/trunk/src/main/csharp/Threads/Scheduler.cs
(with props)
Added:
activemq/activemq-dotnet/Apache.NMS.ActiveMQ/trunk/src/main/csharp/Threads/Scheduler.cs
URL:
http://svn.apache.org/viewvc/activemq/activemq-dotnet/Apache.NMS.ActiveMQ/trunk/src/main/csharp/Threads/Scheduler.cs?rev=1471766&view=auto
==============================================================================
---
activemq/activemq-dotnet/Apache.NMS.ActiveMQ/trunk/src/main/csharp/Threads/Scheduler.cs
(added)
+++
activemq/activemq-dotnet/Apache.NMS.ActiveMQ/trunk/src/main/csharp/Threads/Scheduler.cs
Wed Apr 24 23:21:52 2013
@@ -0,0 +1,159 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+using System;
+using System.Threading;
+using System.Collections.Generic;
+
+namespace Apache.NMS.ActiveMQ.Threads
+{
+ /// <summary>
+ /// Scheduler Service useful for running various delayed units of work.
+ /// </summary>
+ public class Scheduler
+ {
+ private object syncRoot = new object();
+ private readonly String name;
+ private TimerEx timer;
+ private readonly Dictionary<Object, TimerTask> timerTasks = new
Dictionary<object, TimerTask>();
+
+ public Scheduler(String name)
+ {
+ this.name = name;
+ }
+
+ /// <summary>
+ /// Executes the given task periodically using a fixed-delay
execution style
+ /// which prevents tasks from bunching should there be some
delay such as
+ /// garbage collection or machine sleep.
+ ///
+ /// This repeating unit of work can later be cancelled using
the WaitCallback
+ /// that was originally used to initiate the processing.
+ /// </summary>
+ public void ExecutePeriodically(WaitCallback task, object arg, int
period)
+ {
+ lock (this.syncRoot)
+ {
+ CheckStarted();
+ TimerTask timerTask = timer.Schedule(task, arg, period,
period);
+ timerTasks.Add(task, timerTask);
+ }
+ }
+
+ /// <summary>
+ /// Executes the given task periodically using a fixed-delay
execution style
+ /// which prevents tasks from bunching should there be some
delay such as
+ /// garbage collection or machine sleep.
+ ///
+ /// This repeating unit of work can later be cancelled using
the WaitCallback
+ /// that was originally used to initiate the processing.
+ /// </summary>
+ public void ExecutePeriodically(WaitCallback task, object arg,
TimeSpan period)
+ {
+ lock (this.syncRoot)
+ {
+ CheckStarted();
+ TimerTask timerTask = timer.Schedule(task, arg, period,
period);
+ timerTasks.Add(task, timerTask);
+ }
+ }
+
+ /// <summary>
+ /// Executes the given task the after delay, no reference is
kept for this
+ /// task so it cannot be cancelled later.
+ /// </summary>
+ public void ExecuteAfterDelay(WaitCallback task, object arg, int
delay)
+ {
+ lock (this.syncRoot)
+ {
+ CheckStarted();
+ }
+
+ timer.Schedule(task, arg, delay);
+ }
+
+ /// <summary>
+ /// Executes the given task the after delay, no reference is
kept for this
+ /// task so it cannot be cancelled later.
+ /// </summary>
+ public void ExecuteAfterDelay(WaitCallback task, object arg,
TimeSpan delay)
+ {
+ lock (this.syncRoot)
+ {
+ CheckStarted();
+ }
+
+ timer.Schedule(task, arg, delay);
+ }
+
+ public void Cancel(object task)
+ {
+ lock (this.syncRoot)
+ {
+ if (timerTasks.ContainsKey(task))
+ {
+ TimerTask ticket = timerTasks[task];
+ if (ticket != null)
+ {
+ ticket.Cancel();
+ timer.Purge(); // remove cancelled TimerTasks
+ }
+
+ timerTasks.Remove(task);
+ }
+ }
+ }
+
+ public void Start()
+ {
+ lock (this.syncRoot)
+ {
+ this.timer = new TimerEx(name, true);
+ }
+ }
+
+ public void Stop()
+ {
+ lock (this.syncRoot)
+ {
+ if (this.timer != null)
+ {
+ this.timer.Cancel();
+ }
+ }
+ }
+
+ public String Name
+ {
+ get { return this.name; }
+ }
+
+ public override string ToString()
+ {
+ return string.Format("[Scheduler][{0}]", name);
+ }
+
+ private void CheckStarted()
+ {
+ if (this.timer == null)
+ {
+ throw new InvalidOperationException("The
Schedular has not been started yet");
+ }
+ }
+ }
+}
+
Propchange:
activemq/activemq-dotnet/Apache.NMS.ActiveMQ/trunk/src/main/csharp/Threads/Scheduler.cs
------------------------------------------------------------------------------
svn:eol-style = native
