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