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curator developed by Netflix

There is a newer version: 1.3.3

/*
 *
 *  Copyright 2011 Netflix, 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.netflix.curator;

import com.netflix.curator.drivers.TracerDriver;
import java.util.concurrent.TimeUnit;

/**
 * Utility to time a method or portion of code
 */
public class TimeTrace
{
    private final String name;
    private final TracerDriver driver;
    private final long startTimeNanos = System.nanoTime();

    /**
     * Create and start a timer
     *
     * @param name name of the event
     * @param driver driver
     */
    public TimeTrace(String name, TracerDriver driver)
    {
        this.name = name;
        this.driver = driver;
    }

    /**
     * Record the elapsed time
     */
    public void commit()
    {
        long        elapsed = System.nanoTime() - startTimeNanos;
        driver.addTrace(name, elapsed, TimeUnit.NANOSECONDS);
    }
}