/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Common Public License (CPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/cpl1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.jikesrvm.tools.ant;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.taskdefs.Property;
/**
* Timer task makes it possible to measure the start, stop and duration between two points in time.
*
* When the task is run with stop set to fals or not yet specified the task stores
* the current time in a property with the name "<property>.start". If stop is set to
* true then the task attempts to load a start time from "<property>.start" and then
* stores the current time in "<property>.end" and the duration between "<property>.start"
* and now in "<property>.duration".
*/
public class TimerTask
extends Task {
private String property;
private boolean stop;
public void setProperty(final String property) {
this.property = property;
}
public void setStop(final boolean stop) {
this.stop = stop;
}
public void execute() throws BuildException {
if (null == property) throw new BuildException("Property not set.");
final long now = System.currentTimeMillis();
if (stop) {
final String start = getProject().getProperty(property + ".start");
if (null == start) throw new BuildException("Start not yet set.");
final long startTime = Long.parseLong(start);
setProperty(property + ".end", String.valueOf(now));
setProperty(property + ".duration", String.valueOf(Math.abs(now - startTime)));
} else {
setProperty(property + ".start", String.valueOf(now));
}
}
private void setProperty(final String name, final String value) {
final Property property = (Property) getProject().createTask("property");
property.setOwningTarget(getOwningTarget());
property.init();
property.setName(name);
property.setValue(value);
property.execute();
}
}