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From: "Saurabh Sehgal" <saurabh.r.s@gmail.com>
To: linux-c-programming@vger.kernel.org
Subject: EAGAIN with read
Date: Thu, 6 Dec 2007 15:14:44 -0500	[thread overview]
Message-ID: <2a46ebd60712061214p2febc3d0pbe4fd688911356f7@mail.gmail.com> (raw)

Hi,

I had a basic question about read . I have a file descriptor marked
with non blocking I/O , and I want to read data from the file
descriptor. This file descriptor is the read end of a UNIX pipe.

 The process that the pipe reads from is a very slow process. Hence I
need to poll  and keep on trying to read from the fd until the process
has actually written something to the pipe. I execute read while the
errno condition EAGAIN is true. Will this ever result in an infinite
loop ? (lets say the remote process dies and doesnt write anything to
the pipe, will I go into an infinite loop since I am polling while
EAGAIN is true ?).

Any help is appreciated. Thank you.

-- S

             reply	other threads:[~2007-12-06 20:14 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-06 20:14 Saurabh Sehgal [this message]
2007-12-06 21:29 ` EAGAIN with read Steve Graegert
2007-12-06 23:27   ` Saurabh Sehgal
2007-12-08 19:12     ` Steve Graegert
2007-12-10 16:21       ` Saurabh Sehgal

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