--- /dev/null 2016-06-24 20:32:48.000000000 +0530 +++ new/test/java/awt/regtesthelpers/Waypoint.java 2016-06-24 20:32:47.000000000 +0530 @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + + /* + * @summary This is a utility for coordinating the flow of events on different + threads. + * @summary com.apple.junit.utils + */ +package test.java.awt.regtesthelpers; + +public class Waypoint { + + static final String MSG = "Waypoint timed out"; + // Wait up to five seconds for our clear() to be called + static final int TIMEOUT = 5000; + boolean clear = false; + + public Waypoint() { + + } + + // + // Pause for either TIMEOUT millis or until clear() is called + // + synchronized public void requireClear() throws RuntimeException { + requireClear(MSG, TIMEOUT); + } + + synchronized public void requireClear(long timeout) + throws RuntimeException { + requireClear(MSG, timeout); + } + + synchronized public void requireClear(String timeOutMsg) + throws RuntimeException { + requireClear(timeOutMsg, TIMEOUT); + } + + synchronized public void requireClear(String timeOutMsg, long timeout) + throws RuntimeException { + long endtime = System.currentTimeMillis() + timeout; + try { + while (isClear() == false) { + if (System.currentTimeMillis() < endtime) { + wait(200); + } else { + break; + } + } + + if (!isClear()) { + throw new RuntimeException(timeOutMsg); + } + } catch (InterruptedException ix) { + } + } + + // + // Called when it is valid to procede past the waypoint + // + synchronized public void clear() { + clear = true; + notify(); + } + + // + // Should be checked after a call to requireClear() to make + // sure that we did not time out. + // + synchronized public boolean isClear() { + return clear; + } + + synchronized public boolean isValid() { + return clear; + } + + // + // For re-use of a waypoint. Be careful. + // + synchronized public void reset() { + clear = false; + } + +}