diff options
| -rw-r--r-- | linuxthreads/ChangeLog | 6 | ||||
| -rw-r--r-- | linuxthreads/Examples/ex13.c | 107 | ||||
| -rw-r--r-- | linuxthreads/Makefile | 3 |
3 files changed, 115 insertions, 1 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 498cebb..cbd498d 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -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. diff --git a/linuxthreads/Examples/ex13.c b/linuxthreads/Examples/ex13.c new file mode 100644 index 0000000..137ca6e --- /dev/null +++ b/linuxthreads/Examples/ex13.c @@ -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; +} diff --git a/linuxthreads/Makefile b/linuxthreads/Makefile index e60e2dc..9ef66f9 100644 --- a/linuxthreads/Makefile +++ b/linuxthreads/Makefile @@ -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 |