1//===-- Implementation of the pthread_mutexattr_settype -------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "pthread_mutexattr_settype.h"
10#include "pthread_mutexattr.h"
11
12#include "src/__support/common.h"
13#include "src/__support/libc_errno.h"
14#include "src/__support/macros/config.h"
15
16#include <pthread.h>
17
18namespace LIBC_NAMESPACE_DECL {
19
20LLVM_LIBC_FUNCTION(int, pthread_mutexattr_settype,
21 (pthread_mutexattr_t *__restrict attr, int type)) {
22 if (type != PTHREAD_MUTEX_NORMAL && type != PTHREAD_MUTEX_ERRORCHECK &&
23 type != PTHREAD_MUTEX_RECURSIVE) {
24 return EINVAL;
25 }
26 pthread_mutexattr_t old = *attr;
27 old &= ~unsigned(PThreadMutexAttrPos::TYPE_MASK);
28 *attr = old | (type << unsigned(PThreadMutexAttrPos::TYPE_SHIFT));
29 return 0;
30}
31
32} // namespace LIBC_NAMESPACE_DECL
33

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source code of libc/src/pthread/pthread_mutexattr_settype.cpp