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/* futex operations for glibc-internal use. Stub version; do not include
this file directly.
Copyright (C) 2014-2023 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 STUB_FUTEX_INTERNAL_H
#define STUB_FUTEX_INTERNAL_H
#include <pthread.h>
/* Returns EINVAL if PSHARED is neither PTHREAD_PROCESS_PRIVATE nor
PTHREAD_PROCESS_SHARED; otherwise, returns 0 if PSHARED is supported, and
ENOTSUP if not. */
static __always_inline int
futex_supports_pshared (int pshared)
{
if (__glibc_likely (pshared == PTHREAD_PROCESS_PRIVATE))
return 0;
else if (pshared == PTHREAD_PROCESS_SHARED)
return 0;
else
return EINVAL;
}
#endif /* futex-internal.h */
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