regarding usage of recv calls in mmap code

[abhinav narain <abhinavnarain10 () gmail com>]

hi
    I wanted to know why is MSG_PEEK used in the recv() call in mmap code
and
    not recvfrom() with MSG_TRUNC flag.
    The reason i am asking is .. because I see my code takes a lot of CPU
which
    is due to more looping, I suppose.
    The flag description for MSG_PEEK shows it doesn't discard the bytes
even
    after reading from the queue.
    Can someone please explain.
    I would like to use recvfrom with MSG_TRUNC .. is that fine ?

-Abhinav
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