线程过程为非静态 [英] Thread Procedure as non-static

问题描述

如何使线程过程访问非静态成员变量?朴素的举个例子..

谢谢，
Laje ...

Hi,

How to make a thread procedure to access non-static member variables? Plaese give me a detial example..

Thanks,
Laje...

推荐答案

1创建线程的参数是用户数据.将您的类实例作为用户数据传递.
我发现最简单的方法是，如果我需要多次访问变量，则可以从静态函数中调用非静态函数.

1 of the parameters to creating the thread is User Data. Pass in your class instance as the User Data.
I find that the easiest way is to call a non-static function from the static function if I need to access variables more than a few times.

//Create the thread
m_hThread = CreateThread(NULL, 0, &ThreadProc, this, 0, NULL);

//The static member function for the callback
DWORD WINAPI MyClass::ThreadProc(void *pInst) {
	return ((MyClass *)pInst)->ThreadProcInternal();
}

//Non-static member function to use as normal
DWORD MyClass::ThreadProcInternal() {
	m_nMyNumber = 0; //for eg.
}

此示例使用Win32线程，但是对于所有线程实现(例如pthread)，其原理都是相同的.它们都带有用户定义的参数.

This example uses Win32 Threads, but the principal is the same for all thread implementations like pthreads. They all take a user defined parameter.

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