PreserveErrno.h

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/*
 * SNode.C - A Slim Toolkit for Network Communication
 * Copyright (C) Volker Christian <me@vchrist.at>
 *               2020, 2021, 2022, 2023, 2024, 2025
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 * This program is free software: you can redistribute it and/or modify
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 * MIT License
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#ifndef UTILS_PRESERVEERRNO_H
#define UTILS_PRESERVEERRNO_H
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#include <cerrno>
 
#endif // DOXYGEN_SHOULD_SKIP_THIS
 
namespace utils {
 
    class PreserveErrno {
    public:
        explicit PreserveErrno(int newErrno = errno);
 
        void setErrno(int newErrno);
 
        ~PreserveErrno();
 
    private:
        int errnum;
    };
 
} // namespace utils
 
#endif // UTILS_PRESERVEERRNO_H