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fcdc67f963
* sysdeps/powerpc/bits/wordsize.h: New file. * sysdeps/powerpc/fpu/bits/mathinline.h (lrint, lrintf): Change long array to int array for 32-/64-bit compatibility. 2002-09-20 Roland McGrath <roland@redhat.com> * login/programs/utmpdump.c: Don't include <error.h>, <errno.h>. * sysdeps/generic/utimes.c (__utimes): Don't check TVP for null. Reported by Bruno Haible <bruno@clisp.org>. * sysdeps/generic/ifreq.h (__ifreq): Compute termination condition before doubling RQ_LEN. * sysdeps/unix/sysv/linux/ifreq.h (__ifreq): Likewise. Reported by Bruno Haible <bruno@clisp.org>. 2002-09-18 Bruno Haible <bruno@clisp.org> * login/logout.c (logout): Don't assume ut_time has the same size as a time_t. * login/logwtmp.c (logwtmp): Likewise. * sysdeps/pthread/configure: New file, moved here from linuxthreads/sysdeps/unix/sysv/linux/configure.
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/* Tests for pthread_mutex_timedlock function.
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Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
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Contributed by Kaz Kylheku <kaz@ashi.footprints.net>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <error.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <time.h>
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#define NUM_THREADS 10
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#define NUM_ITERS 50
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#define TIMEOUT_NS 100000000L
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static void *thread (void *) __attribute__ ((__noreturn__));
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static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
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int
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main (void)
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{
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pthread_t th;
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int i;
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for (i = 0; i < NUM_THREADS; i++)
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{
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if (pthread_create (&th, NULL, thread, NULL) != 0)
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error (EXIT_FAILURE, 0, "cannot create thread");
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}
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(void) thread (NULL);
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/* notreached */
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return 0;
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}
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static void *
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thread (void *arg)
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{
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int i;
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pthread_t self = pthread_self ();
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static int linecount; /* protected by flockfile(stdout) */
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for (i = 0; i < NUM_ITERS; i++)
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{
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struct timespec ts;
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for (;;)
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{
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int err;
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clock_gettime (CLOCK_REALTIME, &ts);
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ts.tv_nsec += TIMEOUT_NS;
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if (ts.tv_nsec >= 1000000000L) {
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ts.tv_sec++;
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ts.tv_nsec -= 1000000000L;
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}
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switch ((err = pthread_mutex_timedlock (&mutex, &ts)))
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{
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case 0:
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flockfile (stdout);
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printf ("%04d: thread %lu got mutex\n", ++linecount,
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(unsigned long) self);
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funlockfile (stdout);
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break;
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case ETIMEDOUT:
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flockfile (stdout);
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printf ("%04d: thread %lu timed out on mutex\n", ++linecount,
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(unsigned long) self);
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funlockfile (stdout);
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continue;
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default:
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error (EXIT_FAILURE, err, "pthread_mutex_timedlock failure");
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}
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break;
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}
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ts.tv_sec = 0;
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ts.tv_nsec = TIMEOUT_NS;
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nanosleep (&ts, NULL);
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flockfile (stdout);
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printf ("%04d: thread %lu releasing mutex\n", ++linecount,
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(unsigned long) self);
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funlockfile (stdout);
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pthread_mutex_unlock (&mutex);
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}
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pthread_exit (NULL);
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}
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