70 lines
2.9 KiB
Java
70 lines
2.9 KiB
Java
/*
|
|
* Copyright (c) 2007, 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 4708197 6497629
|
|
* @summary Test for max priority setting that matches spec
|
|
* @author Pete Soper
|
|
*/
|
|
|
|
public class SetMaxPriority {
|
|
|
|
public static void main(String args[]) throws Exception {
|
|
ThreadGroup tg = new ThreadGroup("foo");
|
|
ThreadGroup ptg = tg.getParent();
|
|
int currentMaxPriority = tg.getMaxPriority();
|
|
int halfMaxPriority = ptg.getMaxPriority() / 2;
|
|
if (halfMaxPriority - Thread.MIN_PRIORITY < 2) {
|
|
throw new RuntimeException("SetMaxPriority test no longer valid: starting parent max priority too close to Thread.MIN_PRIORITY");
|
|
}
|
|
tg.setMaxPriority(halfMaxPriority - 2);
|
|
currentMaxPriority = tg.getMaxPriority();
|
|
if (currentMaxPriority != halfMaxPriority - 2) {
|
|
throw new RuntimeException("SetMaxPriority failed: max priority not changed");
|
|
}
|
|
|
|
// This will fail if bug 6497629 is present because the min tests is
|
|
// being made with the (just lowered) max instead of the parent max,
|
|
// preventing the priority from being moved back up.
|
|
tg.setMaxPriority(currentMaxPriority + 1);
|
|
int newMaxPriority = tg.getMaxPriority();
|
|
if (newMaxPriority != currentMaxPriority + 1) {
|
|
throw new RuntimeException("SetMaxPriority failed: defect 6497629 present");
|
|
}
|
|
|
|
// Confirm that max priorities out of range on both ends have no
|
|
// effect.
|
|
for (int badPriority : new int[] {Thread.MIN_PRIORITY - 1,
|
|
Thread.MAX_PRIORITY + 1}) {
|
|
int oldPriority = tg.getMaxPriority();
|
|
tg.setMaxPriority(badPriority);
|
|
if (oldPriority != tg.getMaxPriority())
|
|
throw new RuntimeException(
|
|
"setMaxPriority bad arg not ignored as specified");
|
|
}
|
|
|
|
System.out.println("SetMaxPriority passed");
|
|
}
|
|
}
|