[Closed] [SDK] Multithread example

Hi,
Is there any example of some plugin that uses multithreading?

I done multithreading in my object plugin using CreateThread from WinApi,
but the performance was poor, about 10-15 fps less than not using multithreading.

I am pasting part of the code below:

class myClass
{
	static DWORD WINAPI ThreadCreate(LPVOID);
	DWORD ThreadStart(LPVOID);

       void BuildMesh();
}

// struct for arguments
struct myArgs
{
	myClass* myclass;
	int a, b, c, d;
};

// ----

DWORD WINAPI MyClass::ThreadCreate(LPVOID lParam)
{
	myClass* _This = static_cast<myArgs*>(lParam)->myclass
	return _This->ThreadStart(lParam);
}

DWORD myClass::ThreadStart(LPVOID lParam)
{
        // some code to do in multithreading
	int start = static_cast<myArgs*>(lParam)->a;
	int end = static_cast<myArgs*>(lParam)->b;
}

void BuildMesh()
{
    DWORD ThreadID_1, ThreadID_2;
    HANDLE t[2];
    t[0] = CreateThread(NULL, 0, ThreadCreate, &a1, 0, &ThreadID_1);

    WaitForSingleObject(t[0], INFINITE);

    mesh.InvalidateGeomCache();
}