mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
581c785bf3
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
96 lines
2.7 KiB
C
96 lines
2.7 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/>. */
|
|
|
|
#include <errno.h>
|
|
#include <semaphore.h>
|
|
#include <shlib-compat.h>
|
|
#include "semaphoreP.h"
|
|
#include <kernel-features.h>
|
|
#include <futex-internal.h>
|
|
|
|
|
|
int
|
|
__new_sem_init (sem_t *sem, int pshared, unsigned int value)
|
|
{
|
|
ASSERT_PTHREAD_INTERNAL_SIZE (sem_t, struct new_sem);
|
|
|
|
/* Parameter sanity check. */
|
|
if (__glibc_unlikely (value > SEM_VALUE_MAX))
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
pshared = pshared != 0 ? PTHREAD_PROCESS_SHARED : PTHREAD_PROCESS_PRIVATE;
|
|
int err = futex_supports_pshared (pshared);
|
|
if (err != 0)
|
|
{
|
|
__set_errno (err);
|
|
return -1;
|
|
}
|
|
|
|
/* Map to the internal type. */
|
|
struct new_sem *isem = (struct new_sem *) sem;
|
|
|
|
/* Use the values the caller provided. */
|
|
#if __HAVE_64B_ATOMICS
|
|
isem->data = value;
|
|
#else
|
|
isem->value = value << SEM_VALUE_SHIFT;
|
|
/* pad is used as a mutex on pre-v9 sparc and ignored otherwise. */
|
|
isem->pad = 0;
|
|
isem->nwaiters = 0;
|
|
#endif
|
|
|
|
isem->private = (pshared == PTHREAD_PROCESS_PRIVATE
|
|
? FUTEX_PRIVATE : FUTEX_SHARED);
|
|
|
|
return 0;
|
|
}
|
|
versioned_symbol (libc, __new_sem_init, sem_init, GLIBC_2_34);
|
|
|
|
#if OTHER_SHLIB_COMPAT(libpthread, GLIBC_2_1, GLIBC_2_34)
|
|
compat_symbol (libpthread, __new_sem_init, sem_init, GLIBC_2_1);
|
|
#endif
|
|
|
|
#if OTHER_SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
|
|
int
|
|
attribute_compat_text_section
|
|
__old_sem_init (sem_t *sem, int pshared, unsigned int value)
|
|
{
|
|
ASSERT_PTHREAD_INTERNAL_SIZE (sem_t, struct new_sem);
|
|
|
|
/* Parameter sanity check. */
|
|
if (__glibc_unlikely (value > SEM_VALUE_MAX))
|
|
{
|
|
__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
|