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/*
* Copyright (c) 2025, 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.
*/
/*
@test
@bug 8332271
@summary tests that concurrent access to the clipboard does not crash the JVM
@key headful
@requires (os.family == "windows")
@run main ConcurrentClipboardAccessTest
*/
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
public class ConcurrentClipboardAccessTest {
public static void main(String[] args) {
Thread clipboardLoader1 = new Thread(new ClipboardLoader());
clipboardLoader1.setDaemon(true);
clipboardLoader1.start();
Thread clipboardLoader2 = new Thread(new ClipboardLoader());
clipboardLoader2.setDaemon(true);
clipboardLoader2.start();
long start = System.currentTimeMillis();
while (true) {
try {
Thread.sleep(1000);
} catch (InterruptedException ignored) {
}
long now = System.currentTimeMillis();
if ((now - start) > (10L * 1000L)) {
break;
}
}
// Test is considered successful if the concurrent repeated reading
// from clipboard succeeds for the allotted time and the JVM does not
// crash.
System.out.println("Shutdown normally");
}
public static class ClipboardLoader implements Runnable {
@Override
public void run() {
final Clipboard systemClipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
while (true) {
try {
if (systemClipboard.isDataFlavorAvailable(DataFlavor.stringFlavor)) {
systemClipboard.getData(DataFlavor.stringFlavor);
}
} catch (Exception ignored) {
}
}
}
}
}
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