io_eagain man page on Alpinelinux

io_eagain man page on Alpinelinux

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io_eagain(3)							  io_eagain(3)

NAME
       io_eagain - tell io_wait that you got an EAGAIN

SYNTAX
       #include <io.h>

       void io_eagain(int64 fd);

DESCRIPTION
       If  io_wait() said that you can read from a descriptor, you try to read
       from it, and you get EAGAIN, you	 need  to  tell	 io_wait().   This  is
       important  for  edge  triggered	event  notification schemes like Linux
       2.4's SIGIO, or you will lose events.

       io_tryread(), io_trywrite() and io_sendfile()  and  iob_send()  already
       take care of this for you.

       This  function  is  only	 of  interest  if you integrate io_wait() with
       legacy code that uses read/write directly.

SEE ALSO
       io_wait(3)

								  io_eagain(3)

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