mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-07 13:50:07 +00:00
d82e4c7bb2
2000-06-25 Ulrich Drepper <drepper@redhat.com> * Makefile (tests): Add ex10. Add rules to build it. * Versions [GLIBC_2.2] (libpthread): Add pthread_mutex_timedlock, pthread_rwlock_timedrdlock, and pthread_rwlock_timedwrlock. * condvar.c (pthread_cond_wait): Allow mutex of kind PTHREAD_MUTEX_TIMED_NP. (pthread_cond_timedwait_relative): Likewise. * mutex.c (__pthread_mutex_init): Default is PTHREAD_MUTEX_TIMED_NP. (__pthread_mutex_trylock): Use __pthread_alt_trylock for PTHREAD_MUTEX_ERRORCHECK_NP. Handle PTHREAD_MUTEX_TIMED_NP. (__pthread_mutex_lock): Use __pthread_alt_lock for PTHREAD_MUTEX_ERRORCHECK_NP. Handle PTHREAD_MUTEX_TIMED_NP. (__pthread_mutex_timedlock): New function. (__pthread_mutex_unlock): Use __pthread_alt_unlock for PTHREAD_MUTEX_ERRORCHECK_NP. Handle PTHREAD_MUTEX_TIMED_NP. (__pthread_mutexattr_init): Use PTHREAD_MUTEX_TIMED_NP. (__pthread_mutexattr_settype): Allow PTHREAD_MUTEX_TIMED_NP. * spinlock.c: Implement alternate fastlocks. * spinlock.h: Add prototypes. * Examples/ex10.c: New file. * sysdeps/pthread/pthread.h: Add prototypes for new functions. Patch by Kaz Kylheku <kaz@ashi.footprints.net>. * rwlock.c (__pthread_rwlock_rdlock): Optimize loop a bit. (__pthread_rwlock_timedrdlock): New function. (__pthread_rwlock_timedwrlock): New function. Use laternate fastlock function everywhere.
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/* Tests for pthread_mutex_timedlock function.
|
|
Copyright (C) 2000 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 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. */
|
|
|
|
#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 *);
|
|
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 (;;)
|
|
{
|
|
|
|
clock_gettime (CLOCK_REALTIME, &ts);
|
|
|
|
ts.tv_nsec += TIMEOUT_NS;
|
|
|
|
if (ts.tv_nsec > 1000000000L) {
|
|
ts.tv_sec++;
|
|
ts.tv_nsec -= 1000000000L;
|
|
}
|
|
|
|
switch (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;
|
|
}
|
|
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);
|
|
}
|