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Test of semaphores.
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Ulrich Drepper
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May 26, 2007
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/* Copyright (C) 2007 Free Software Foundation, Inc. | ||
This file is part of the GNU C Library. | ||
Contributed by Jakub Jelinek <jakub@redhat.com>, 2007. | ||
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; if not, write to the Free | ||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
02111-1307 USA. */ | ||
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#include <errno.h> | ||
#include <pthread.h> | ||
#include <semaphore.h> | ||
#include <stdio.h> | ||
#include <time.h> | ||
#include <unistd.h> | ||
#include <sys/time.h> | ||
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static int | ||
do_test (void) | ||
{ | ||
sem_t s; | ||
if (sem_init (&s, 0, 0) == -1) | ||
{ | ||
puts ("sem_init failed"); | ||
return 1; | ||
} | ||
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struct timeval tv; | ||
if (gettimeofday (&tv, NULL) != 0) | ||
{ | ||
puts ("gettimeofday failed"); | ||
return 1; | ||
} | ||
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struct timespec ts; | ||
TIMEVAL_TO_TIMESPEC (&tv, &ts); | ||
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/* Set ts to yesterday. */ | ||
ts.tv_sec -= 86400; | ||
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int type_before; | ||
if (pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, &type_before) != 0) | ||
{ | ||
puts ("first pthread_setcanceltype failed"); | ||
return 1; | ||
} | ||
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errno = 0; | ||
if (TEMP_FAILURE_RETRY (sem_timedwait (&s, &ts)) != -1) | ||
{ | ||
puts ("sem_timedwait succeeded"); | ||
return 1; | ||
} | ||
if (errno != ETIMEDOUT) | ||
{ | ||
printf ("sem_timedwait return errno = %d instead of ETIMEDOUT\n", | ||
errno); | ||
return 1; | ||
} | ||
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int type_after; | ||
if (pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, &type_after) != 0) | ||
{ | ||
puts ("second pthread_setcanceltype failed"); | ||
return 1; | ||
} | ||
if (type_after != PTHREAD_CANCEL_DEFERRED) | ||
{ | ||
puts ("sem_timedwait changed cancellation type"); | ||
return 1; | ||
} | ||
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return 0; | ||
} | ||
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#define TEST_FUNCTION do_test () | ||
#include "../test-skeleton.c" |
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#include <semaphore.h> | ||
#include <stdio.h> | ||
#include <unistd.h> | ||
#include <pthread.h> | ||
#include <internaltypes.h> | ||
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#ifndef SEM_WAIT | ||
# define SEM_WAIT(s) sem_wait (s) | ||
#endif | ||
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static void * | ||
tf (void *arg) | ||
{ | ||
#ifdef PREPARE | ||
PREPARE | ||
#endif | ||
SEM_WAIT (arg); | ||
return NULL; | ||
} | ||
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int | ||
main (void) | ||
{ | ||
int tries = 5; | ||
pthread_t th; | ||
sem_t s; | ||
again: | ||
if (sem_init (&s, 0, 0) != 0) | ||
{ | ||
puts ("sem_init failed"); | ||
return 1; | ||
} | ||
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struct new_sem *is = (struct new_sem *) &s; | ||
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if (is->nwaiters != 0) | ||
{ | ||
puts ("nwaiters not initialized"); | ||
return 1; | ||
} | ||
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if (pthread_create (&th, NULL, tf, &s) != 0) | ||
{ | ||
puts ("pthread_create failed"); | ||
return 1; | ||
} | ||
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sleep (1); | ||
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if (pthread_cancel (th) != 0) | ||
{ | ||
puts ("pthread_cancel failed"); | ||
return 1; | ||
} | ||
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void *r; | ||
if (pthread_join (th, &r) != 0) | ||
{ | ||
puts ("pthread_join failed"); | ||
return 1; | ||
} | ||
if (r != PTHREAD_CANCELED && --tries > 0) | ||
{ | ||
/* Maybe we get the scheduling right the next time. */ | ||
sem_destroy (&s); | ||
goto again; | ||
} | ||
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if (is->nwaiters != 0) | ||
{ | ||
puts ("nwaiters not reset"); | ||
return 1; | ||
} | ||
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return 0; | ||
} |
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#include <time.h> | ||
#include <sys/time.h> | ||
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#define PREPARE \ | ||
struct timespec ts; \ | ||
struct timeval tv; \ | ||
gettimeofday (&tv, NULL); \ | ||
TIMEVAL_TO_TIMESPEC (&tv, &ts); \ | ||
ts.tv_sec += 60; | ||
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#define SEM_WAIT(s) sem_timedwait (s, &ts) | ||
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#include "tst-sem11.c" |