在boost线程上调用抽象函数，不会在interruption_point处中断

发布于 2024-12-02 14:27:49 字数 1079 浏览 0 评论 0原文

我创建了一个抽象基类以允许任务的多次实现，可以通过 MFC 对话框进行一般调用。如果用户单击“取消”，则该任务需要能够中断。

abstract_dll.h：

class abstract_dll
{
public:
    virtual void my_task(CFeedback *fb)=0;
}

其中CFeedback是一个抽象类，用于控制用户反馈（即进度条）

concrete_dll.h：

class concrete_dll 
{
    virtual void my_task(CFeedback *fb)
    {
        //do some work
        //step progress bar
        boost::this_thread::interruption_point();

        //do some work
        //step progress bar
        boost::this_thread::interruption_point();
    }
}

extern "C" abstract_dll* get_class() { return new concrete_dll(); }

现在位于MFC对话框中我加载适当的crete_dll并初始化我的abstract_dll *dll = module->get_class();

然后启动一个新的boost::thread来调用dll->my_task(fb);

然后当我调用 thread.interrupt() 时。该线程永远不会被中断，并且永远不会在我的interruption_points 处例外。我已经跟踪了线程 ID，直到我们进入crete_dll 实现为止，它都是相同的，然后我只得到 0x0000 作为线程 id。

有什么想法吗？附言。上面的代码只是我所拥有的伪代码。我的实际代码编译并运行，我只是无法让它中断。

原文

I have created an abstract base class to allow for multiple implementation of a task, which can be called generically via MFC dialog. This task needs to be able to be interrupted if the user clicks cancel.

abstract_dll.h:

class abstract_dll
{
public:
    virtual void my_task(CFeedback *fb)=0;
}

Where CFeedback is an abstract class to control user feedback (ie. progress bar)

concrete_dll.h:

class concrete_dll 
{
    virtual void my_task(CFeedback *fb)
    {
        //do some work
        //step progress bar
        boost::this_thread::interruption_point();

        //do some work
        //step progress bar
        boost::this_thread::interruption_point();
    }
}

extern "C" abstract_dll* get_class() { return new concrete_dll(); }

Now within the MFC Dialog I load the appropriate concrete_dll and initialize my abstract_dll *dll = module->get_class();

Then start a new boost::thread which calls the dll->my_task(fb);

Then when I call thread.interrupt(). The thread is never interrupted, and it never excepts at my interruption_points. I have traced the thread ID it is the same until we're in the concrete_dll implementation, then I just get 0x0000 for the thread id.

Any thoughts? PS. The code above is just pseudo code for what I have. My actual code compiles and runs, I just can't get it to interrupt.

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