libc/src/pthread/pthread_mutexattr_getrobust.cpp

   1 //===-- Implementation of the pthread_mutexattr_getrobust -----------------===//
   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_getrobust.h"
  10 #include "pthread_mutexattr.h"
  11
  12 #include "src/__support/common.h"
  13
  14 #include <errno.h>
  15
  16 namespace __llvm_libc {
  17
  18 LLVM_LIBC_FUNCTION(int, pthread_mutexattr_getrobust,
  19                    (const pthread_mutexattr_t *__restrict attr,
  20                     int *__restrict robust)) {
  21   *robust = (*attr & unsigned(PThreadMutexAttrPos::ROBUST_MASK)) >>
  22             unsigned(PThreadMutexAttrPos::ROBUST_SHIFT);
  23   return 0;
  24 }
  25
  26 } // namespace __llvm_libc