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/*
* mtest1.c
*
* $Id: mtest2.c,v 1.2 2009/03/19 10:12:21 source Exp $
*
* Fiber test program
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2006 OpenLink Software
*
* This project 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; only version 2 of the License, dated June 1991.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*/
#include "Dk.h"
#define MY_NAME (void *)1
rwlock_t *l;
#if 1
void
thread_sleep (TVAL msec)
{
sleep (msec / 1000);
}
#endif
void
logme (char *fmt, ...)
{
char buf[250];
time_t now;
va_list (ap);
va_start (ap, fmt);
vsprintf (buf, fmt, ap);
va_end (ap);
time (&now);
printf ("%d [%s] %s\n", (int) now,
(char *) thread_getattr (current_thread, MY_NAME), buf);
}
int
reader (void *arg)
{
thread_setattr (current_thread, MY_NAME, arg);
logme ("Started");
for (;;)
{
rwlock_rdlock (l);
logme ("read lock acquired, sleeping 3 secs");
thread_sleep (3000);
rwlock_unlock (l);
}
return 0;
}
int
main ()
{
l = rwlock_allocate ();
thread_initial (0);
thread_setattr (current_thread, MY_NAME, "w");
logme ("Started");
rwlock_wrlock (l);
logme ("write lock acquired (1), sleeping 1 sec");
thread_create (reader, 0, "r1");
thread_create (reader, 0, "r2");
thread_sleep (1000);
rwlock_unlock (l);
thread_sleep (1000); /* XXX */
rwlock_wrlock (l);
logme ("write lock acquired (2), sleeping 1 sec");
rwlock_unlock (l);
thread_sleep (1000);
return 0;
}
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