Determine the size of a pipe without calling read()

Question

I need a function called SizeOfPipe() which should return the size of a pipe - I only want to know how much data is in the pipe and not actually read data off t

Answer 1

If you want to know the amount of data that it's expected to arrive, you could always write at the begining of every msg sent by the pipes the size of the msg. So write for example 4 bytes at the start of every msg with the length of your data, and then only read the first 4 bytes.