c++ - Visual Studio13 创建线程和优化流程

Question

我在 VS13 中编写多线程

函数声明:

void getColorImage(HANDLE &colorEvent, HANDLE &colorStreamHandle, Mat &colorImage);
void getDepthImage(HANDLE &depthEvent, HANDLE &depthStreamHandle, Mat &depthImage);
void getSkeletonImage(HANDLE &skeletonEvent, Mat &skeletonImage, Mat &colorImage, Mat &depthImage, ofstream& myfile);

int main()
{
    // this is inside a while loop

    std::thread first(getColorImage, colorEvent, colorStreamHandle, colorImage);
    std::thread second(getDepthImage, depthEvent, depthStreamHandle, depthImage);
    std::thread third(getSkeletonImage, skeletonEvent, skeletonImage, colorImage, depthImage, myfile);

    first.join();
    second.join();
    third.join();
 }

但是，我得到一个错误:

Error 1 error C2280: 'std::basic_ofstream>::basic_ofstream(const std::basic_ofstream> &)' : attempting to reference a deleted function c:\program files (x86)\microsoft visual studio 12.0\vc\include\type_traits 1545 1 Skeleton_RGBDepth_DataAcquisition2013

不知道为什么...有人可以帮忙吗？

Answer 1

std::thread 构造函数，与 std::bind 相同，按值获取其所有参数。但是 std::ofstream 有一个 deleted 复制构造函数，因此会出现错误。

用 std::ref 包装所有应该通过引用传递的参数。