001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 package org.apache.hadoop.yarn.util; 019 020 import org.apache.hadoop.classification.InterfaceAudience.Public; 021 import org.apache.hadoop.classification.InterfaceStability.Stable; 022 023 /** 024 * Implementation of {@link Clock} that gives the current time from the system 025 * clock in milliseconds. 026 */ 027 @Public 028 @Stable 029 public class SystemClock implements Clock { 030 031 public long getTime() { 032 return System.currentTimeMillis(); 033 } 034 }