1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache license, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the license for the specific language governing permissions and
15 * limitations under the license.
16 */
17 package org.apache.logging.log4j.core.util;
18
19 /**
20 * Implementation of the {@code NanoClock} interface that always returns a fixed value.
21 */
22 public final class DummyNanoClock implements NanoClock {
23
24 private final long fixedNanoTime;
25
26 public DummyNanoClock() {
27 this(0L);
28 }
29
30 /**
31 * Constructs a new DummyNanoClock with the specified value to return.
32 * @param fixedNanoTime the value to return from {@link #nanoTime()}.
33 */
34 public DummyNanoClock(final long fixedNanoTime) {
35 this.fixedNanoTime = fixedNanoTime;
36 }
37
38 /**
39 * Returns the constructor value.
40 *
41 * @return the constructor value
42 */
43 @Override
44 public long nanoTime() {
45 return fixedNanoTime;
46 }
47
48 }