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High performance primitives and utility library.

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/*
 * Copyright 2014-2025 Real Logic Limited.
 *
 * 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
 *
 * https://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 org.agrona.concurrent;

/**
 * Clock representing the time in nanoseconds since 1 Jan 1970 UTC.
 */
@FunctionalInterface
public interface EpochNanoClock
{
    /**
     * Time in nanoseconds since 1 Jan 1970 UTC.
     *
     * @return the number of nanoseconds since 1 Jan 1970 UTC.
     */
    long nanoTime();
}