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 "__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 21