001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017package org.apache.logging.log4j.core.util; 018 019/** 020 * Implementation of the {@code NanoClock} interface that always returns a fixed value. 021 */ 022public final class DummyNanoClock implements NanoClock { 023 024 private final long fixedNanoTime; 025 026 public DummyNanoClock() { 027 this(0L); 028 } 029 030 /** 031 * Constructs a new DummyNanoClock with the specified value to return. 032 * @param fixedNanoTime the value to return from {@link #nanoTime()}. 033 */ 034 public DummyNanoClock(final long fixedNanoTime) { 035 this.fixedNanoTime = fixedNanoTime; 036 } 037 038 /** 039 * Returns the constructor value. 040 * 041 * @return the constructor value 042 */ 043 @Override 044 public long nanoTime() { 045 return fixedNanoTime; 046 } 047 048}