/**
 * 
 */
package at.gv.egiz.pdfas.performance;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * @author wprinz
 * 
 */
public class PerformanceTimer
{
  /**
   * The log.
   */
  private static Log log = LogFactory.getLog(PerformanceTimer.class);

  protected String name = null;

  protected long startTime = -1;

  protected long stopTime = -1;

  public PerformanceTimer(String name)
  {
    this.name = name;
  }

  public void start()
  {
    this.startTime = System.currentTimeMillis();
    log.trace(this.name + ": started at " + this.startTime);
  }

  public void stop()
  {
    this.stopTime = System.currentTimeMillis();
    log.trace(this.name + ": stopped at " + this.stopTime);
    log.trace(this.name + ": time elapsed = " + getTimeElapsed());
  }

  public long getTimeElapsed()
  {
    return this.stopTime - this.startTime;
  }
}