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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 daemon extends Thread implements Testlet
{
TestHarness harness;
boolean started = false;
boolean please_stop = false;
public void run()
{
synchronized(this)
{
started = true;
notify();
while (!please_stop)
{
try
{
wait();
} catch(InterruptedException ignored) { }
}
}
}
public void test (TestHarness harness)
{
this.harness = harness;
Thread current = Thread.currentThread();
boolean status = current.isDaemon();
boolean illegal_exception = false;
try
{
current.setDaemon(!status);
}
catch (IllegalThreadStateException itse)
{
illegal_exception = true;
}
harness.check(illegal_exception,
"Cannot change daemon state on current Thread");
harness.check(current.isDaemon() == status,
"Daemon status not changed when set on current Thread");
daemon t = new daemon();
harness.check(t.isDaemon() == status,
"Newly created thread gets daemon status of creator");
t.setDaemon(!status);
harness.check(t.isDaemon() != status,
"Can change daemon status on an unstarted Thread");
status = t.isDaemon();
// Make sure we have a running thread.
t.start();
synchronized(t)
{
while (!t.started)
try {
t.wait();
}
catch (InterruptedException ignored) {
}
}
harness.check(t.isDaemon() == status,
"Daemon status does not change when starting a Thread");
illegal_exception = false;
try
{
t.setDaemon(!status);
}
catch (IllegalThreadStateException itse)
{
illegal_exception = true;
}
harness.check(illegal_exception,
"Cannot change daemon state on a running Thread");
harness.check(t.isDaemon() == status,
"Daemon status not changed when set on a running Thread");
status = t.isDaemon();
// Make sure the thread exits
synchronized(t)
{
t.please_stop = true;
t.notify();
}
try {
t.join();
}
catch (InterruptedException ignored) {
}
// Note: the Sun Javadoc seems to contradict itself on whether you can
// change daemon state on an exitted Thread. The observed behaviour
// (on JDK 1.3.1 & 1.4.0) is that it works. (But why would you bother?)
illegal_exception = false;
try
{
t.setDaemon(!status);
}
catch (IllegalThreadStateException itse)
{
illegal_exception = true;
}
harness.check(!illegal_exception,
"Can change daemon state on an exitted Thread");
harness.check(t.isDaemon() != status,
"Daemon status changed when set on an exitted Thread");
}
}
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