1 /* 2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package jdk.test.lib; 25 26 import java.util.Objects; 27 28 /** 29 * Class which runs another Runnable in infinite loop with certain pauses 30 * between cycles. 31 */ 32 public class InfiniteLoop implements Runnable { 33 private final Runnable target; 34 private final long mills; 35 36 37 /** 38 * @param target a target to run in a loop 39 * @param mills the length of pause time in milliseconds 40 * @throws NullPointerException if target is null 41 * @throws IllegalArgumentException if the value of millis is negative 42 */ 43 public InfiniteLoop(Runnable target, long mills) { 44 Objects.requireNonNull(target); 45 if (mills < 0) { 46 throw new IllegalArgumentException("mills < 0"); 47 } 48 this.target = target; 49 this.mills = mills; 50 } 51 52 @Override 53 public void run() { 54 try { 55 while (true) { 56 target.run(); 57 if (mills > 0) { 58 Thread.sleep(mills); 59 } 60 } 61 } catch (InterruptedException e) { 62 Thread.currentThread().interrupt(); 63 throw new Error(e); 64 } 65 } 66 }