PerformanceMeasure.java

/**
 *
 * TURTLE PLAYER
 *
 * Licensed under MIT & GPL
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 * OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * More Information @ www.turtle-player.co.uk
 *
 * @author Simon Honegger (Hoene84)
 */

package com.turtleplayer.util.dev;

import android.util.Log;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

public class PerformanceMeasure
{
	private static final Map<String, Long> startMillis = new HashMap<String, Long>();

	private static final String TAG = "TurtlePlayer.PerformanceLog";

	public static void start(String id)
	{

		Long dublicated = startMillis.put(id, System.currentTimeMillis());
		if (dublicated != null)
		{
			startMillis.remove(id);
			Log.v(TAG, id + ": intersecting call to PerformanceMeasure, ignoring");
		}

	}

	public static void stop(String id)
	{
		Long startMillisOfId = startMillis.get(id);

		if (startMillisOfId == null)
		{
			Log.v(TAG, id + ": intersecting call to PerformanceMeasure, ignoring");
			return;
		}

		Long millis = System.currentTimeMillis() - startMillisOfId;

		String formattedTime = String.format("%d min, %d sec, %d millis",
				  TimeUnit.MILLISECONDS.toMinutes(millis),
				  TimeUnit.MILLISECONDS.toSeconds(millis) -
							 TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)),
				  millis -
							 TimeUnit.SECONDS.toSeconds(TimeUnit.MILLISECONDS.toSeconds(millis))
		);

		Log.v(TAG, id + ": " + formattedTime);

		startMillis.remove(id);
	}

}