com.orientechnologies.common.thread.OSoftThread Maven / Gradle / Ivy
/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
* *
* * Licensed 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.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.common.thread;
import com.orientechnologies.common.util.OService;
public abstract class OSoftThread extends Thread implements OService {
private volatile boolean shutdownFlag;
public OSoftThread() {
}
public OSoftThread(final ThreadGroup iThreadGroup) {
super(iThreadGroup, OSoftThread.class.getSimpleName());
setDaemon(true);
}
public OSoftThread(final String name) {
super(name);
setDaemon(true);
}
public OSoftThread(final ThreadGroup group, final String name) {
super(group, name);
setDaemon(true);
}
protected abstract void execute() throws Exception;
public void startup() {
}
public void shutdown() {
}
public void sendShutdown() {
shutdownFlag = true;
}
public boolean isShutdownFlag() {
return shutdownFlag;
}
@Override
public void run() {
startup();
while (!shutdownFlag && !isInterrupted()) {
try {
beforeExecution();
execute();
afterExecution();
} catch (Throwable t) {
t.printStackTrace();
}
}
shutdown();
}
/**
* Pauses current thread until iTime timeout or a wake up by another thread.
*
* @param iTime
* @return true if timeout has reached, otherwise false. False is the case of wake-up by another thread.
*/
public static boolean pauseCurrentThread(long iTime) {
try {
if (iTime <= 0)
iTime = Long.MAX_VALUE;
Thread.sleep(iTime);
return true;
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
return false;
}
}
protected void beforeExecution() throws InterruptedException {
return;
}
protected void afterExecution() throws InterruptedException {
return;
}
}