c++ 线程安全的类

利用局部变量的析构函数完成对cs的leave操作， Test类就是线程安全的

 

class MyCriticalSection
{
public:
    MyCriticalSection()
    {
        InitializeCriticalSection(cs);
    }
    
public:
    virtual ~MyCriticalSection()
    {
        DeleteCriticalSection(cs);
    }

private:
    CRITICAL_SECTION cs;

};

class ThreadSafe
{
public:
    ThreadSafe(MyCriticalSection cs)
    {
        this->cs = cs;
        EnterCriticalSection(this->cs);
    }
~ThreadSafe()
{
    LeaveCriticalSection(cs);
}

private:
    MyCriticalSection cs;
};

class Test
{
public:
    public void Show()
    {
        ThreadSafe ts(cs);
        //do something else


        //析构函数会leave cs的
    }
private:
    MyCriticalSection cs;
};