com.google.api.core.NanoClock Maven / Gradle / Ivy
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* Copyright 2016, Google Inc.
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package com.google.api.core;
import java.io.ObjectStreamException;
import java.io.Serializable;
import java.util.concurrent.TimeUnit;
/** Default implementation of the ApiClock interface, using call to System.nanoTime(). */
public final class NanoClock implements ApiClock, Serializable {
private static final ApiClock DEFAULT_CLOCK = new NanoClock();
private static final long serialVersionUID = 5541462688633944865L;
public static ApiClock getDefaultClock() {
return DEFAULT_CLOCK;
}
private NanoClock() {}
@Override
public final long nanoTime() {
return System.nanoTime();
}
@Override
public final long millisTime() {
return TimeUnit.MILLISECONDS.convert(nanoTime(), TimeUnit.NANOSECONDS);
}
private Object readResolve() throws ObjectStreamException {
return DEFAULT_CLOCK;
}
}