org.apache.qpid.thread.RealtimeThreadFactory Maven / Gradle / Ivy
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*
* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
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*/
package org.apache.qpid.thread;
import java.lang.reflect.Constructor;
public class RealtimeThreadFactory implements ThreadFactory
{
private final LoggingUncaughtExceptionHandler _loggingUncaughtExceptionHandler = new LoggingUncaughtExceptionHandler();
private Class threadClass;
private Constructor threadConstructor;
private Constructor priorityParameterConstructor;
private int defaultRTThreadPriority = 20;
public RealtimeThreadFactory() throws Exception
{
defaultRTThreadPriority = Integer.getInteger("qpid.rt_thread_priority",20);
threadClass = Class.forName("javax.realtime.RealtimeThread");
Class schedulingParametersClass = Class.forName("javax.realtime.SchedulingParameters");
Class releaseParametersClass = Class.forName("javax.realtime.ReleaseParameters");
Class memoryParametersClass = Class.forName("javax.realtime.MemoryParameters");
Class memoryAreaClass = Class.forName("javax.realtime.MemoryArea");
Class processingGroupParametersClass = Class.forName("javax.realtime.ProcessingGroupParameters");
Class[] paramTypes = new Class[]{schedulingParametersClass,
releaseParametersClass,
memoryParametersClass,
memoryAreaClass,
processingGroupParametersClass,
java.lang.Runnable.class};
threadConstructor = threadClass.getConstructor(paramTypes);
Class priorityParameterClass = Class.forName("javax.realtime.PriorityParameters");
priorityParameterConstructor = priorityParameterClass.getConstructor(new Class[]{int.class});
}
public Thread createThread(Runnable r) throws Exception
{
return createThread(r,defaultRTThreadPriority);
}
public Thread createThread(Runnable r, int priority) throws Exception
{
Object priorityParams = priorityParameterConstructor.newInstance(priority);
Thread thread = (Thread)threadConstructor.newInstance(priorityParams,null,null,null,null,r);
thread.setUncaughtExceptionHandler(_loggingUncaughtExceptionHandler);
return thread;
}
}