libc/src/__support/threads/callonce.h

   1 //===-- Types related to the callonce function ----------------------------===//
   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 namespace __llvm_libc {
  10
  11 struct CallOnceFlag;
  12 using CallOnceCallback = void(void);
  13
  14 int callonce(CallOnceFlag *flag, CallOnceCallback *callback);
  15
  16 } // namespace __llvm_libc