I would think that signal handlers would be installed upon
entry to rrd_update and rrd_create and exit of the subroutine.
Ideally, it would be smart enough to only set the handler when
a write is about to happen and then remove the handler only if
it was set.
Is there a way for the signals to be defered until the completion
of rrd_update or rrd_create instead of ignoring them?
Blair
Tobi Oetiker wrote:
>
> Today you sent me mail regarding Exiting of programs during an rrd_update:
>
> *> I have one more thing that I'd like thought about before the
> *> final release of RRDtool.
> *>
> *> What happens to an RRD file if the program running rrd_update
> *> is control-c during an rrd_update. Can the file be corrupted
> *> or screwed up in any way? If so, I'd like to see rrd_update
> *> potentially open writing to a temporary file, create the
> *> file, close the file, and then do a rename to the final
> *> name. In this way if anything goes wrong before the
> *> rename, no data is lost or screwed up.
>
> Hi Blair,
>
> the tmp file aprocah is not a solution at this would defeat the whole point
> of round robin archives where the file is EDITED insted of rewritten ...
>
> We could put a signal handler in there which made rrd_update and rrd_create
> ignore all signals when it executes the fwrites ...
>
> cheers
> tobi
>
> *>
> *> Comments,
> *> Blair
>
> --
> ______ __ _
> /_ __/_ / / (_) Oetiker, hacking RRDTOOL&MRTG @ Caida for the Summer
> / // _ \/ _ \/ / +1 619 822 0882 / [EMAIL PROTECTED] / www.caida.org/~tobi
> /_/ \.__/_.__/_/ _______________________________________________________
>
> --
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