org.apache.rocketmq.shaded.io.opentelemetry.sdk.common.SystemClock Maven / Gradle / Ivy
/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
package org.apache.rocketmq.shaded.io.opentelemetry.sdk.common;
import org.apache.rocketmq.shaded.io.opentelemetry.sdk.internal.JavaVersionSpecific;
import javax.annotation.concurrent.ThreadSafe;
/** A {@link Clock} that uses {@link System#currentTimeMillis()} and {@link System#nanoTime()}. */
@ThreadSafe
final class SystemClock implements Clock {
private static final SystemClock INSTANCE = new SystemClock();
private SystemClock() {}
/**
* Returns a {@code MillisClock}.
*
* @return a {@code MillisClock}.
*/
static Clock getInstance() {
return INSTANCE;
}
@Override
public long now() {
return JavaVersionSpecific.get().currentTimeNanos();
}
@Override
public long nanoTime() {
return System.nanoTime();
}
@Override
public String toString() {
return "SystemClock{}";
}
}