libc/include/llvm-libc-types/once_flag.h

   1 //===-- Definition of once_flag type --------------------------------------===//
   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 #ifndef __LLVM_LIBC_TYPES_ONCE_FLAG_H__
  10 #define __LLVM_LIBC_TYPES_ONCE_FLAG_H__
  11
  12 #include <llvm-libc-types/__futex_word.h>
  13
  14 #ifdef __linux__
  15 typedef __futex_word once_flag;
  16 #else
  17 #error "Once flag type not defined for the target platform."
  18 #endif
  19
  20 #endif // __LLVM_LIBC_TYPES_ONCE_FLAG_H__