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#ifndef LLVM_LIBC_SRC___SUPPORT_THREADS_CALLONCE_H
10#define LLVM_LIBC_SRC___SUPPORT_THREADS_CALLONCE_H
11
12namespace LIBC_NAMESPACE {
13
14struct CallOnceFlag;
15using CallOnceCallback = void(void);
16
17int callonce(CallOnceFlag *flag, CallOnceCallback *callback);
18
19} // namespace LIBC_NAMESPACE
20
21#endif // LLVM_LIBC_SRC___SUPPORT_THREADS_CALLONCE_H
22

source code of libc/src/__support/threads/callonce.h