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/*
* Copyright (c) 2005, 2021, 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.
*/
import java.awt.image.DirectColorModel;
/**
* @test
* @bug 6245283
* @summary Checks the behavior of the DirectColorModel.getRed(int)
* with multiple threads.
*/
public final class MultiThreadCMMTest extends Thread {
/* Number of concurent threads creating and accessing
* DirectColorModel object
*/
private static final int THREAD_COUNT = 100;
private static final int ITERATION_COUNT = 20;
private static volatile boolean failed = false;
private static volatile Exception failureException = null;
private static synchronized void setStatusFailed(Exception e) {
/* Store first occurred exception */
if (!failed) {
failureException = e;
failed = true;
}
}
public static void main(String [] args) throws Exception {
Thread [] threadArray = new Thread [THREAD_COUNT];
for (int i = 0; i < ITERATION_COUNT; i++) {
for (int j = 0; j < threadArray.length; j++) {
threadArray[j] = new MultiThreadCMMTest();
};
for (int j = 0; j < threadArray.length; j++) {
threadArray[j].start();
}
/* Ensure that all threads are finished */
for (int j = 0; j < threadArray.length; j++) {
threadArray[j].join();
if (failed) {
throw new RuntimeException(failureException);
}
}
}
}
public void run() {
int rMask16 = 0xF800;
int gMask16 = 0x07C0;
int bMask16 = 0x003E;
int r;
try {
for(int i=0; i < 1000; i++) {
DirectColorModel dcm =
new DirectColorModel(16, rMask16, gMask16, bMask16);
r = dcm.getRed(10);
}
} catch(Exception e) {
setStatusFailed(e);
}
}
}
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