88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/* Copyright (C) 2002, 2007 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <semaphore.h>
|
|
#include <lowlevellock.h>
|
|
#include <shlib-compat.h>
|
|
#include "semaphoreP.h"
|
|
#include <kernel-features.h>
|
|
|
|
|
|
int
|
|
__new_sem_init (sem, pshared, value)
|
|
sem_t *sem;
|
|
int pshared;
|
|
unsigned int value;
|
|
{
|
|
/* Parameter sanity check. */
|
|
if (__builtin_expect (value > SEM_VALUE_MAX, 0))
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
/* Map to the internal type. */
|
|
struct new_sem *isem = (struct new_sem *) sem;
|
|
|
|
/* Use the values the user provided. */
|
|
isem->value = value;
|
|
#ifdef __ASSUME_PRIVATE_FUTEX
|
|
isem->private = pshared ? 0 : FUTEX_PRIVATE_FLAG;
|
|
#else
|
|
isem->private = pshared ? 0 : THREAD_GETMEM (THREAD_SELF,
|
|
header.private_futex);
|
|
#endif
|
|
|
|
isem->nwaiters = 0;
|
|
|
|
return 0;
|
|
}
|
|
versioned_symbol (libpthread, __new_sem_init, sem_init, GLIBC_2_1);
|
|
|
|
|
|
|
|
#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
|
|
int
|
|
attribute_compat_text_section
|
|
__old_sem_init (sem, pshared, value)
|
|
sem_t *sem;
|
|
int pshared;
|
|
unsigned int value;
|
|
{
|
|
/* Parameter sanity check. */
|
|
if (__builtin_expect (value > SEM_VALUE_MAX, 0))
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
/* Map to the internal type. */
|
|
struct old_sem *isem = (struct old_sem *) sem;
|
|
|
|
/* Use the value the user provided. */
|
|
isem->value = value;
|
|
|
|
/* We cannot store the PSHARED attribute. So we always use the
|
|
operations needed for shared semaphores. */
|
|
|
|
return 0;
|
|
}
|
|
compat_symbol (libpthread, __old_sem_init, sem_init, GLIBC_2_0);
|
|
#endif
|