| /* |
| * 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; |
| } |
| |
| } |