C++ CScopeGuard

最新推荐文章于 2022-08-30 21:35:23 发布

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最新推荐文章于 2022-08-30 21:35:23 发布

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分类专栏： C/C++

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本文详细介绍了CScopeGuard类在C++中的应用，它是一种用于智能管理作用域范围内的资源的类，通过封装作用域退出时的清理操作，确保资源在正确的时间被释放。

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class CScopeGuard
{
private:
    bool m_Dismissed;
    std::function<void()> m_pfOnExitScope;
private:
    void * operator new(size_t) = delete;
    CScopeGuard(CScopeGuard & sg) = delete;
    CScopeGuard & operator=(CScopeGuard & sg) = delete;
    CScopeGuard & operator=(std::function<void()> const & soe) = delete;
public:
    /*explicit*/
    inline APIENTRY CScopeGuard(std::function<void()> pfOnExitScope) noexcept : m_Dismissed(false), m_pfOnExitScope(pfOnExitScope)
    {
    }
    inline APIENTRY ~CScopeGuard()
    {
        if (!m_Dismissed)
        {
            m_pfOnExitScope();
        }
    }
public:
    inline void APIENTRY Dismiss(bool dismissed = true) noexcept
    {
        m_Dismissed = dismissed;
    }
};