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1//===-- Implementation of the pthread_mutexattr_setrobust -----------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "pthread_mutexattr_setrobust.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_setrobust,21                   (pthread_mutexattr_t *__restrict attr, int robust)) {22  if (robust != PTHREAD_MUTEX_STALLED && robust != PTHREAD_MUTEX_ROBUST)23    return EINVAL;24  pthread_mutexattr_t old = *attr;25  old &= ~unsigned(PThreadMutexAttrPos::ROBUST_MASK);26  *attr = old | (robust << unsigned(PThreadMutexAttrPos::ROBUST_SHIFT));27  return 0;28}29 30} // namespace LIBC_NAMESPACE_DECL31