I think inotify kernel support will help if there is another app that watch for event and check the /tmp/rat.txt size each event occurred, additional synronization most likely needed between them. I guess you are talking about `log' like file on a limited disk space, You need to prevent the file's size get bigger than 20k maybe by make empty the file. I prefer the app that keep writing on that file also manage file size each write and do assigned work when file size hit it's limit.
Ardhan
--- Holger.Kiehl@xxxxxx wrote:
From: Holger Kiehl <Holger.Kiehl@xxxxxx>
To: ratheesh k <ratheesh.ksz@xxxxxxxxx>
cc: linux-c-programming@xxxxxxxxxxxxxxx
Subject: Re: File size events.
Date: Mon, 13 Sep 2010 17:52:35 +0000 (GMT)
On Mon, 13 Sep 2010, ratheesh k wrote:
> I have an application which keep on writing to one file /tmp/rat.txt.
> I would like to handle an event when the file size exceed 20kb . How
> to get this event ? Is there an event chain , i could register with ?
> is there any other easy mechanism ?
>
See inotify. This will not tell the size, just the event when someone
writes to the file. The size you can then get with stat() or fstat().
Holger
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