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//===-- Implementation of the pthread_mutexattr_setpshared ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "pthread_mutexattr_setpshared.h"
#include "pthread_mutexattr.h"
#include "src/__support/common.h"
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include <pthread.h>
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, pthread_mutexattr_setpshared,
(pthread_mutexattr_t *__restrict attr, int pshared)) {
if (pshared != PTHREAD_PROCESS_PRIVATE && pshared != PTHREAD_PROCESS_SHARED)
return EINVAL;
pthread_mutexattr_t old = *attr;
old &= ~unsigned(PThreadMutexAttrPos::PSHARED_MASK);
*attr = old | (pshared << unsigned(PThreadMutexAttrPos::PSHARED_SHIFT));
return 0;
}
} // namespace LIBC_NAMESPACE_DECL
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