Non-Blocking read() in C

Hello everybody,

I am trying to read data from an SD card. But the library function of read() is in blocking mode (synchronous). I want to modify this function into non-blocking mode (asynchronous) as it is waste of time waiting for the read operation to complete and I have to do other tasks as well. Its in C.

Some ideas are to use threading or else. Can anybody give his/her thoughts.

Any tips and ideas on whats the best way to do it. Any material.

Thank you in advance.