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* Examples/ex13.c: New test by Kurt Garloff <garloff@suse.de>.

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* Makefile (tests): Add ex13.
2000-08-22  Andreas Jaeger  <aj@suse.de>

	* Examples/ex13.c: New test by Kurt Garloff <garloff@suse.de>.

	* Makefile (tests): Add ex13.
This commit is contained in:
Andreas Jaeger 2000-08-22 07:35:53 +00:00
parent dd492f9bb5
commit 64f6b8f3cd
3 changed files with 115 additions and 1 deletions
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6
linuxthreads/ChangeLog
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@ -1,3 +1,9 @@
2000-08-22 Andreas Jaeger <aj@suse.de>
* Examples/ex13.c: New test by Kurt Garloff <garloff@suse.de>.
* Makefile (tests): Add ex13.
2000-08-20 Ulrich Drepper <drepper@redhat.com>
* semaphore.h: Add restrict where required by AGd4.

107
linuxthreads/Examples/ex13.c Normal file
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@ -0,0 +1,107 @@
/* Test for Pthreads/mutexes.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Kurt Garloff <garloff@suse.de>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#define _GNU_SOURCE 1
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <pthread.h>
struct thr_ctrl
{
pthread_mutex_t mutex;
pthread_cond_t cond;
int retval;
};
void
dump_mut (pthread_mutex_t * mut)
{
int i;
for (i = 0; i < sizeof (*mut); i++)
printf (" %02x", *((unsigned char *) mut + i));
printf ("\n");
};
/* Helper, the opposite of pthread_cond_wait (cond, mut). */
void
pthr_cond_signal_mutex (pthread_cond_t * cond, pthread_mutex_t * mut)
{
int err;
if (err = pthread_mutex_lock (mut))
printf ("mutex_lock : %s\n", strerror (err));
if (err = pthread_cond_signal (cond))
printf ("cond_signal : %s\n", strerror (err));
if (err = pthread_mutex_unlock (mut))
printf ("mutex_unlock: %s\n", strerror (err));
}
void *
thread_start (void *ptr)
{
struct thr_ctrl *tc = ptr;
int err;
/* Do initialization. */
/* ... */
/* Signal that we are ready. */
pthr_cond_signal_mutex (&tc->cond, &tc->mutex);
sleep (2);
pthr_cond_signal_mutex (&tc->cond, &tc->mutex);
tc->retval = 0;
pthread_exit (&tc->retval);
}
int
main (void)
{
struct thr_ctrl threadctrl;
pthread_t thread;
int err;
int *res = &threadctrl.retval;
pthread_mutexattr_t mutattr;
pthread_mutexattr_init (&mutattr);
pthread_mutex_init (&threadctrl.mutex, &mutattr);
pthread_cond_init (&threadctrl.cond, NULL);
if (err = pthread_mutex_lock (&threadctrl.mutex))
printf ("mutex_lock : %s\n", strerror (err));
dump_mut (&threadctrl.mutex);
pthread_create (&thread, NULL, thread_start, &threadctrl);
/* Wait until it's ready. */
if (err = pthread_cond_wait (&threadctrl.cond, &threadctrl.mutex))
printf ("cond_wait : %s\n", strerror (err));
/* Now, we should have acquired the mutex again! */
dump_mut (&threadctrl.mutex);
sleep (1);
dump_mut (&threadctrl.mutex);
if (err = pthread_cond_wait (&threadctrl.cond, &threadctrl.mutex))
printf ("cond_wait : %s\n", strerror (err));
if (err)
{
printf ("ERROR\n");
abort ();
};
dump_mut (&threadctrl.mutex);
pthread_join (thread, (void **) &res);
printf ("OK\n");
return 0;
}

3
linuxthreads/Makefile
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@ -43,7 +43,8 @@ LDFLAGS-pthread.so = $(nodelete-$(have-z-nodelete))
vpath %.c Examples
librt-tests = ex10 ex11
tests = ex1 ex2 ex3 ex4 ex5 ex6 ex7 ex8 ex9 $(librt-tests) ex12 joinrace tststack
tests = ex1 ex2 ex3 ex4 ex5 ex6 ex7 ex8 ex9 $(librt-tests) ex12 ex13 joinrace \
tststack
include ../Rules