com.google.inject.internal.util.Stopwatch Maven / Gradle / Ivy
/**
* Copyright (C) 2006 Google Inc.
*
* 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.
*/
package com.google.inject.internal.util;
import java.util.logging.Logger;
/**
* Enables simple performance monitoring.
*
* @author [email protected] (Bob Lee)
*/
public final class Stopwatch {
private static final Logger logger = Logger.getLogger(Stopwatch.class.getName());
private long start = System.currentTimeMillis();
/**
* Resets and returns elapsed time in milliseconds.
*/
public long reset() {
long now = System.currentTimeMillis();
try {
return now - start;
} finally {
start = now;
}
}
/**
* Resets and logs elapsed time in milliseconds.
*/
public void resetAndLog(String label) {
logger.fine(label + ": " + reset() + "ms");
}
}