glibc/nptl/semaphoreP.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

62 lines
2.1 KiB
C

/* Copyright (C) 2002-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <semaphore.h>
#include <futex-internal.h>
#include "pthreadP.h"
#define SEM_SHM_PREFIX "sem."
static inline void __new_sem_open_init (struct new_sem *sem, unsigned value)
{
#if __HAVE_64B_ATOMICS
sem->data = value;
#else
sem->value = value << SEM_VALUE_SHIFT;
sem->nwaiters = 0;
#endif
/* pad is used as a mutex on pre-v9 sparc and ignored otherwise. */
sem->pad = 0;
/* This always is a shared semaphore. */
sem->private = FUTEX_SHARED;
}
/* Prototypes of functions with multiple interfaces. */
extern int __new_sem_init (sem_t *sem, int pshared, unsigned int value);
extern int __old_sem_init (sem_t *sem, int pshared, unsigned int value);
extern int __new_sem_destroy (sem_t *sem);
extern int __new_sem_post (sem_t *sem);
extern int __new_sem_wait (sem_t *sem);
extern int __old_sem_wait (sem_t *sem);
extern int __new_sem_trywait (sem_t *sem);
extern int __new_sem_getvalue (sem_t *sem, int *sval);
#if __TIMESIZE == 64
# define __sem_clockwait64 __sem_clockwait
# define __sem_timedwait64 __sem_timedwait
#else
extern int
__sem_clockwait64 (sem_t *sem, clockid_t clockid,
const struct __timespec64 *abstime);
libc_hidden_proto (__sem_clockwait64)
extern int
__sem_timedwait64 (sem_t *sem, const struct __timespec64 *abstime);
libc_hidden_proto (__sem_timedwait64)
#endif