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// Tags: JDK1.0
// Copyright (C) 2002 Free Software Foundation, Inc.
// Written by Mark Wielaard (mark@klomp.org)
// This file is part of Mauve.
// Mauve is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// Mauve 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 for more details.
// You should have received a copy of the GNU General Public License
// along with Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA. */
package gnu.testlet.java.lang.Thread;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;
public class priority implements Testlet, Runnable
{
private static TestHarness harness;
private void test_set_prio(Thread t, String test_name)
{
int prio = t.getPriority();
harness.check(prio >= Thread.MIN_PRIORITY,
test_name + " has at least MIN_PRIORITY");
harness.check(prio <= Thread.MAX_PRIORITY,
test_name + " has at at most MAX_PRIORITY");
// Remember old thread group priority
ThreadGroup tg = t.getThreadGroup();
harness.debug("ThreadGroup: " + tg);
int thread_group_prio = t.getThreadGroup().getMaxPriority();
t.getThreadGroup().setMaxPriority(Thread.MAX_PRIORITY);
for (int i = Thread.MIN_PRIORITY; i <= Thread.MAX_PRIORITY; i++)
{
t.setPriority(i);
harness.check(t.getPriority() == i,
test_name + " can be set to priority " + i);
}
t.getThreadGroup().setMaxPriority(Thread.NORM_PRIORITY);
t.setPriority(Thread.NORM_PRIORITY+1);
harness.check(t.getPriority() == Thread.NORM_PRIORITY,
test_name + " has thread group upper bound");
// Reset thread group priority to not disturb other tests.
t.getThreadGroup().setMaxPriority(thread_group_prio);
boolean illegal_exception = false;
try
{
t.setPriority(Thread.MIN_PRIORITY-1);
}
catch (IllegalArgumentException iae)
{
illegal_exception = true;
}
harness.check(illegal_exception,
test_name + " cannot set prio to less then MIN_PRIORITY");
harness.check(t.getPriority() == Thread.NORM_PRIORITY,
test_name + " prio doesn't change when set to illegal min");
illegal_exception = false;
try
{
t.setPriority(Thread.MAX_PRIORITY+1);
}
catch (IllegalArgumentException iae)
{
illegal_exception = true;
}
harness.check(illegal_exception,
test_name + " cannot set prio to more then MAX_PRIORITY");
harness.check(t.getPriority() == Thread.NORM_PRIORITY,
test_name + " prio doesn't change when set to illegal max");
}
public void test (TestHarness h)
{
harness = h;
harness.check(10, Thread.MAX_PRIORITY);
harness.check(1, Thread.MIN_PRIORITY);
harness.check(5, Thread.NORM_PRIORITY);
Thread current = Thread.currentThread();
test_set_prio(current, "Every Thread");
int prio = current.getPriority();
Thread t = new Thread(p);
harness.check(t.getPriority() == prio,
"New Thread inherits priority");
test_set_prio(t, "New Thread");
prio = t.getPriority();
t.start();
harness.check(t.getPriority() == prio,
"Started Thread does not change priority");
test_set_prio(t, "Started Thread");
synchronized(p) {
p.please_stop = true;
p.notify();
}
try { t.join(); } catch(InterruptedException ie) { }
harness.check(t.getPriority() == prio,
"Stopped Thread does not change priority");
// What is the expected behavior of setPriority on a stopped Thread?
}
static priority p = new priority();
boolean please_stop = false;
public void run()
{
synchronized(p)
{
while(!please_stop)
try { p.wait(); } catch(InterruptedException ie) { }
}
}
}
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