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/*
* Copyright 2017, OpenCensus Authors
*
* 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 io.opencensus.implcore.common;
import io.opencensus.common.Clock;
import io.opencensus.common.Timestamp;
import javax.annotation.concurrent.ThreadSafe;
/** A {@link Clock} that uses {@link System#currentTimeMillis()} and {@link System#nanoTime()}. */
@ThreadSafe
public final class MillisClock extends Clock {
private static final MillisClock INSTANCE = new MillisClock();
private MillisClock() {}
/**
* Returns a {@code MillisClock}.
*
* @return a {@code MillisClock}.
*/
public static MillisClock getInstance() {
return INSTANCE;
}
@Override
public Timestamp now() {
return Timestamp.fromMillis(System.currentTimeMillis());
}
@Override
public long nowNanos() {
return System.nanoTime();
}
}
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