1//===-- Linux implementation of the pthread_once 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#include "pthread_once.h"
10#include "src/__support/common.h"
11#include "src/__support/macros/config.h"
12#include "src/__support/threads/callonce.h"
13
14#include <pthread.h> // For pthread_once_t and __pthread_once_func_t definitions.
15
16namespace LIBC_NAMESPACE_DECL {
17
18LLVM_LIBC_FUNCTION(int, pthread_once,
19 (pthread_once_t * flag, __pthread_once_func_t func)) {
20 return callonce(reinterpret_cast<CallOnceFlag *>(flag),
21 reinterpret_cast<CallOnceCallback *>(func));
22}
23
24} // namespace LIBC_NAMESPACE_DECL
25

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source code of libc/src/pthread/pthread_once.cpp