如何在GLFW 3中共享源文件之间的窗口上下文

Ok, I've been trying to share a window context between different source files, mainly my main c++ file and the main gameloop, it looks like this(stripped down), it's made in OpenGL 3.3 and GLFW 3 using Code::Blocks 13.12. I'm trying to do this to cut down on size of my individual filesOk, I've been trying to share a window context