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- /* 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 "semaphoreP.h"
- #include <bits/kernel-features.h>
- int
- sem_init (
- 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;
- }
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