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Diffstat (limited to 'linuxthreads/Examples/ex10.c')
-rw-r--r-- | linuxthreads/Examples/ex10.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/linuxthreads/Examples/ex10.c b/linuxthreads/Examples/ex10.c deleted file mode 100644 index f3ad517..0000000 --- a/linuxthreads/Examples/ex10.c +++ /dev/null @@ -1,108 +0,0 @@ -/* Tests for pthread_mutex_timedlock function. - Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. - Contributed by Kaz Kylheku <kaz@ashi.footprints.net>, 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 <error.h> -#include <stdio.h> -#include <stdlib.h> -#include <pthread.h> -#include <time.h> - -#define NUM_THREADS 10 -#define NUM_ITERS 50 -#define TIMEOUT_NS 100000000L - -static void *thread (void *) __attribute__ ((__noreturn__)); -static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; - -int -main (void) -{ - pthread_t th; - int i; - - for (i = 0; i < NUM_THREADS; i++) - { - if (pthread_create (&th, NULL, thread, NULL) != 0) - error (EXIT_FAILURE, 0, "cannot create thread"); - } - - (void) thread (NULL); - /* notreached */ - return 0; -} - - -static void * -thread (void *arg) -{ - int i; - pthread_t self = pthread_self (); - static int linecount; /* protected by flockfile(stdout) */ - - for (i = 0; i < NUM_ITERS; i++) - { - struct timespec ts; - - for (;;) - { - int err; - - clock_gettime (CLOCK_REALTIME, &ts); - - ts.tv_nsec += TIMEOUT_NS; - - if (ts.tv_nsec >= 1000000000L) { - ts.tv_sec++; - ts.tv_nsec -= 1000000000L; - } - - switch ((err = pthread_mutex_timedlock (&mutex, &ts))) - { - case 0: - flockfile (stdout); - printf ("%04d: thread %lu got mutex\n", ++linecount, - (unsigned long) self); - funlockfile (stdout); - break; - case ETIMEDOUT: - flockfile (stdout); - printf ("%04d: thread %lu timed out on mutex\n", ++linecount, - (unsigned long) self); - funlockfile (stdout); - continue; - default: - error (EXIT_FAILURE, err, "pthread_mutex_timedlock failure"); - } - break; - } - - ts.tv_sec = 0; - ts.tv_nsec = TIMEOUT_NS; - nanosleep (&ts, NULL); - - flockfile (stdout); - printf ("%04d: thread %lu releasing mutex\n", ++linecount, - (unsigned long) self); - funlockfile (stdout); - pthread_mutex_unlock (&mutex); - } - - pthread_exit (NULL); -} |