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io_tryreadtimeout(3)  DragonFly Library Functions Manual  io_tryreadtimeout(3)

NAME
       io_tryreadtimeout - read from a descriptor without blocking

SYNTAX
       #include <io.h>

       int io_tryreadtimeout(int64 fd,char* buf,int64 len);

DESCRIPTION
       io_tryreadtimeout is identical to io_tryread, with the following
       exception: if

       o  io_tryread returns -1 (the descriptor is not ready for reading), and

       o  the descriptor has a timeout, and

       o  the read attempt was after the descriptor's timeout,

       then io_tryreadtimeout instead returns -2, with errno set to ETIMEDOUT.

SEE ALSO
       io_nonblock(3), io_waitread(3), io_tryread(3)

                                                          io_tryreadtimeout(3)