glibc/sysdeps/pthread/semaphore.h
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

113 lines
3.4 KiB
C

/* Copyright (C) 2002-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#ifndef _SEMAPHORE_H
#define _SEMAPHORE_H 1
#include <features.h>
#include <sys/types.h>
#ifdef __USE_XOPEN2K
# include <bits/types/struct_timespec.h>
#endif
/* Get the definition for sem_t. */
#include <bits/semaphore.h>
__BEGIN_DECLS
/* Initialize semaphore object SEM to VALUE. If PSHARED then share it
with other processes. */
extern int sem_init (sem_t *__sem, int __pshared, unsigned int __value)
__THROW __nonnull ((1));
/* Free resources associated with semaphore object SEM. */
extern int sem_destroy (sem_t *__sem) __THROW __nonnull ((1));
/* Open a named semaphore NAME with open flags OFLAG. */
extern sem_t *sem_open (const char *__name, int __oflag, ...)
__THROW __nonnull ((1));
/* Close descriptor for named semaphore SEM. */
extern int sem_close (sem_t *__sem) __THROW __nonnull ((1));
/* Remove named semaphore NAME. */
extern int sem_unlink (const char *__name) __THROW __nonnull ((1));
/* Wait for SEM being posted.
This function is a cancellation point and therefore not marked with
__THROW. */
extern int sem_wait (sem_t *__sem) __nonnull ((1));
#ifdef __USE_XOPEN2K
/* Similar to `sem_wait' but wait only until ABSTIME.
This function is a cancellation point and therefore not marked with
__THROW. */
# ifndef __USE_TIME_BITS64
extern int sem_timedwait (sem_t *__restrict __sem,
const struct timespec *__restrict __abstime)
__nonnull ((1, 2));
# else
# ifdef __REDIRECT
extern int __REDIRECT (sem_timedwait,
(sem_t *__restrict __sem,
const struct timespec *__restrict __abstime),
__sem_timedwait64)
__nonnull ((1, 2));
# else
# define sem_timedwait __sem_timedwait64
# endif
# endif
#endif
#ifdef __USE_GNU
# ifndef __USE_TIME_BITS64
extern int sem_clockwait (sem_t *__restrict __sem,
clockid_t clock,
const struct timespec *__restrict __abstime)
__nonnull ((1, 3));
# else
# ifdef __REDIRECT
extern int __REDIRECT (sem_clockwait,
(sem_t *__restrict __sem,
clockid_t clock,
const struct timespec *__restrict __abstime),
__sem_clockwait64)
__nonnull ((1, 3));
# else
# define sem_clockwait __sem_clockwait64
# endif
# endif
#endif
/* Test whether SEM is posted. */
extern int sem_trywait (sem_t *__sem) __THROWNL __nonnull ((1));
/* Post SEM. */
extern int sem_post (sem_t *__sem) __THROWNL __nonnull ((1));
/* Get current value of SEM and store it in *SVAL. */
extern int sem_getvalue (sem_t *__restrict __sem, int *__restrict __sval)
__THROW __nonnull ((1, 2));
__END_DECLS
#endif /* semaphore.h */