Java AtomicLong nanoTime()

Description

Equivalent to System.nanoTime(), but based off the 1/1/1970 epoch like currentTimeMillis().

License

Apache License

Declaration

public static long nanoTime() 

Method Source Code

//package com.java2s;
/*//  w  ww  .j a  v a 2  s. c  o  m
 * Scalyr client library
 * Copyright 2012 Scalyr, 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.
 */

import java.util.concurrent.atomic.AtomicLong;

public class Main {
    /**
     * Most recent value passed to setCustomTimeMs, or -1 if no setCustomTimeMs is in
     * effect.
     */
    private static final AtomicLong customTimeMs = new AtomicLong(-1);
    /**
     * Value which must be added to System.nanoTime() to yield # of nanoseconds since the epoch.
     */
    private static Long nanoTimeOffset = null;

    /**
     * Equivalent to System.nanoTime(), but based off the 1/1/1970 epoch like currentTimeMillis().
     */
    public static long nanoTime() {
        long custom = customTimeMs.get();
        if (custom == -1)
            return System.nanoTime() + nanoTimeOffset;
        else
            return custom * 1000000L;
    }
}

Related

1. greaterAndSet(long value, AtomicLong atomicValue)
2. isAtomicLong(final N number)
3. joinThreads()
4. lock()
5. max(AtomicLong x, long y)
6. printProgress(final AtomicLong value)
7. randomSeed()
8. removeCustomTime()
9. resetURICounter()