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Diffstat (limited to 'linuxthreads/Examples/ex13.c')
-rw-r--r-- | linuxthreads/Examples/ex13.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/linuxthreads/Examples/ex13.c b/linuxthreads/Examples/ex13.c deleted file mode 100644 index 14add6c773..0000000000 --- a/linuxthreads/Examples/ex13.c +++ /dev/null @@ -1,112 +0,0 @@ -/* Test for Pthreads/mutexes. - Copyright (C) 2000, 2001, 2002, 2003 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 Lesser General Public License as - published by the Free Software Foundation; either version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser 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. */ - -#include <errno.h> -#include <pthread.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -static void *thread_start (void *ptr) __attribute__ ((__noreturn__)); - - -struct thr_ctrl -{ - pthread_mutex_t mutex; - pthread_cond_t cond; - int retval; -}; - -static void -dump_mut (pthread_mutex_t * mut) -{ - size_t 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). */ -static void -pthr_cond_signal_mutex (pthread_cond_t * cond, pthread_mutex_t * mut) -{ - int err; - err = pthread_mutex_lock (mut); - if (err) - printf ("mutex_lock : %s\n", strerror (err)); - err = pthread_cond_signal (cond); - if (err) - printf ("cond_signal : %s\n", strerror (err)); - err = pthread_mutex_unlock (mut); - if (err) - printf ("mutex_unlock: %s\n", strerror (err)); -} - -static void * -thread_start (void *ptr) -{ - struct thr_ctrl *tc = ptr; - /* 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; - void *res = &threadctrl.retval; - pthread_mutexattr_t mutattr; - pthread_mutexattr_init (&mutattr); - pthread_mutex_init (&threadctrl.mutex, &mutattr); - pthread_cond_init (&threadctrl.cond, NULL); - err = pthread_mutex_lock (&threadctrl.mutex); - if (err) - printf ("mutex_lock : %s\n", strerror (err)); - dump_mut (&threadctrl.mutex); - pthread_create (&thread, NULL, thread_start, &threadctrl); - /* Wait until it's ready. */ - err = pthread_cond_wait (&threadctrl.cond, &threadctrl.mutex); - if (err) - 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); - err = pthread_cond_wait (&threadctrl.cond, &threadctrl.mutex); - if (err) - { - printf ("cond_wait : %s\n", strerror (err)); - printf ("ERROR\n"); - abort (); - }; - dump_mut (&threadctrl.mutex); - pthread_join (thread, &res); - printf ("OK\n"); - return 0; -} |