ManualClock.java

/**
 * The MIT License
 * Copyright (c) 2014 JMXTrans Team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * 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.
 */
package org.jmxtrans.utils.time;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.ThreadSafe;

import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.NANOSECONDS;

@ThreadSafe
public class ManualClock implements Clock{

    @Nonnull
    private final AtomicLong currentTimeMillis = new AtomicLong();

    @Nonnull
    private final AtomicLong nanoTime = new AtomicLong();

    public void setTime(long time, @Nonnull TimeUnit unit) {
        currentTimeMillis.set(MILLISECONDS.convert(time, unit));
        nanoTime.set(NANOSECONDS.convert(time, unit));
    }

    public void waitFor(long waitTime, @Nonnull TimeUnit unit) {
        currentTimeMillis.addAndGet(MILLISECONDS.convert(waitTime, unit));
        nanoTime.addAndGet(NANOSECONDS.convert(waitTime, unit));
    }

    @Override
    public long currentTimeMillis() {
        return currentTimeMillis.get();
    }

    @Override
    public long nanoTime() {
        return nanoTime.get();
    }

}