| 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 | |
| 14 | #include <errno.h> |
| 15 | #include <pthread.h> |
| 16 | |
| 17 | namespace LIBC_NAMESPACE { |
| 18 | |
| 19 | LLVM_LIBC_FUNCTION(int, pthread_mutexattr_settype, |
| 20 | (pthread_mutexattr_t *__restrict attr, int type)) { |
| 21 | if (type != PTHREAD_MUTEX_NORMAL && type != PTHREAD_MUTEX_ERRORCHECK && |
| 22 | type != PTHREAD_MUTEX_RECURSIVE) { |
| 23 | return EINVAL; |
| 24 | } |
| 25 | pthread_mutexattr_t old = *attr; |
| 26 | old &= ~unsigned(PThreadMutexAttrPos::TYPE_MASK); |
| 27 | *attr = old | (type << unsigned(PThreadMutexAttrPos::TYPE_SHIFT)); |
| 28 | return 0; |
| 29 | } |
| 30 | |
| 31 | } // namespace LIBC_NAMESPACE |
| 32 |