Run two functions at the same time [closed] - c++

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I have two functions. How would i run two functions at the same time? I Know should use threading.
I need a example for Multi Threading . I am using Visual Studio 2010

Answer 1

You can use _beginthread
void CalculatePrimes(void*)
{
// Do something
}
void TransmitFile(void*)
{
// Do domething
}
int main()
{
uintptr_ x = _beginthread(CalculatePrices,0,NULL);
uintptr_ y = _beginthread(TransmitFile,0,NULL);
return 0;
}
If you've got access to C++11 you can use std::thread :
void CalculatePrimes()
{
// Do something
}
void TransmitFile()
{
// Do domething
}
int main()
{
std::thread x(CalculatePrices);
std::thread y(TransmitFile);
// Both function are now running an different thread
// We need to wait for them to finish
x.join();
y.join();
return 0;
}
And, if you want to get down to the metal you can use the CreateThread api :
DWORD WINAPI CalculatePrimes(void *)
{
// Do something
return 0;
}
DWORD WINAPI TransmitFile(void *)
{
// Do something
return 0;
}
int main()
{
HANDLE x=::CreateThread(NULL,0,CalculatePrimes,NULL,0,NULL);
HANDLE y=::CreateThread(NULL,0,CalculatePrimes,NULL,0,NULL);
// Wait for them to finish
::WaitForSingleObject(x,INFINITE);
::WaitForSingleObject(y,INFINITE);
return 0;
}

Answer 2

The MSDN reference for < thread > only goes back to VS2012,not VS2010. You could update to VS2012 (you also need to be running Win 7 or Win 8) Here is a link to a zip of a windows console program written in C that copies a file using two threads, creating a thread to do the writes. It uses windows mutexes and semaphores to implement an inter-thread single linked list messaging interface.
mtcopy.zip

Answer 3

If you are using MFC, you could use AfxBeginThread to create a CWinThread:
UINT SomeFunction(LPVOID pParam)
{
CSomeObject * pObject = (CSomeObject*)pParam;
// do stuff
return 0; // thread completed successfully
}
int main()
{
CSomeObject pObject = new CSomeObject;
AfxBeginThread(SomeFunction, pObject);
...
return 0;
}
For more information, see MSDN for AfxBeginThread.