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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 join extends Thread implements Testlet
{
static TestHarness harness;
// Set this to true if want this thread to notify and wait till please_stop
boolean please_wait = false;
boolean waiting = false;
boolean please_stop = false;
// Set to a value bigger then zero if you want the thread to sleep or work
// a bit before terminating.
int sleep = 0;
int work = 0;
// When set will join this Thread.
Thread please_join = null;
// Set when this Thread thinks it is done.
boolean done = false;
// Counter that is used to do some 'work'
long counter = 0;
public void run()
{
if (please_wait)
synchronized(this)
{
waiting = true;
this.notify();
while(!please_stop)
try
{
this.wait();
}
catch (InterruptedException ie)
{
harness.fail("Interrupted wait in run()");
}
}
if (sleep > 0)
try
{
Thread.sleep(sleep);
}
catch (InterruptedException ignore)
{
harness.fail("Interrupted sleep in run()");
}
if (work > 0)
for (int i = 0; i < work; i++)
counter += (sleep < 0 ? (work - 1) : work +1); // silly computation.
if (please_join != null)
try
{
please_join.join();
}
catch (InterruptedException ignore)
{
harness.fail("Interrupted join in run()");
}
done = true;
}
public void test (TestHarness h)
{
harness = h;
try
{
Thread current = Thread.currentThread();
current.join(10,10);
harness.check(current.isAlive(), "Can join current Thread");
join t = new join();
t.join(10,10);
harness.check(!t.isAlive(), "Can join a non-started Thread");
t.start();
t.join();
harness.check(!t.isAlive(), "Can join a started Thread");
harness.check(t.done, "join() returns after Thread is done");
t.join();
harness.check(!t.isAlive(), "Can join a stopped Thread");
t = new join();
t.please_wait = true;
t.start();
synchronized(t)
{
while (!t.waiting)
t.wait();
}
t.join(10,10);
harness.check(t.waiting && !t.done, "Can join waiting Thread");
synchronized(t)
{
t.please_stop = true;
t.notify();
}
t.join();
harness.check(!t.isAlive(), "Can join wait/notify Thread");
harness.check(t.done, "join() returns after wait/notify Thread done");
t = new join();
t.work = 100000;
t.start();
t.join();
harness.check(t.done, "join() returns after Thread has worked");
t = new join();
t.sleep = 750;
t.start();
t.join();
harness.check(t.done, "join() returns after Thread has slept");
join t1 = new join();
t1.sleep = 750;
t1.work = 100000;
join t2 = new join();
t2.please_join = t1;
t1.start();
t2.start();
t1.join();
t2.join();
harness.check(t1.done && t2.done, "Multiple Threads can join()");
}
catch (InterruptedException ie)
{
harness.fail("Unexpected interrupt");
}
}
}
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