[rrd-users] Re: stdout with mod_perl and rrdtool

[Todd Caine]

Tobi,

I don't quite understand how this would be implemented.  I modified rrd_graph.c with the
following changes:

rrd_graph accepts one more parameter (int *fd_num)
graph_paint() does not close FILE *fo if the filename is '-' or '::return'
graph_paint() returns the 0 upon success as usual unless the filename was '::return' then it
returns the fileno of FILE *fo

Then, I modified rrd_graph() in RRDs.xs to return an additional parameter

Now my question; is this what you meant by returning the handle to the in memory image?  Also,
how will the file descriptor get closed now?

PS.  Everything seemed to compile just fine, although I haven't had a chance to see if the new
functionality works yet.

Cheers,
todd


Tobias Oetiker wrote:

> Today you sent me mail regarding [rrd-users] Re: stdout with mod_perl and...:
>
> there would a nice extension one could add to rrdtool. it goes like
> this:
>
> a) allow for a special filename like ::return
>
> b) if the filename eq '::return' then a handle to the in memmory image will be returned as
>    the 3rd value from rrdtool graph. You can then work on it in
>    which ever frontend you use.
>
> c) and for the enthusiasts, you caould add a new image format: the
>    ImageMagick in core image format (not sure what its proper name
>    is), so that one can work on the image right away with image magick
>    and does not have to compress and decompress and thus saves
>    valuable time
>
> patches welcome
>
> tobi
> --
>  ______    __   _
> /_  __/_  / /  (_) Oetiker, Timelord & SysMgr @ EE-Dept ETH-Zurich
>  / // _ \/ _ \/ / TEL: +41(0)1-6325286  FAX:...1517  ICQ: 10419518
> /_/ \.__/_.__/_/ oetiker at ee.ethz.ch http://ee-staff.ethz.ch/~oetiker
>
> --
> Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
> Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
> Archive     http://www.ee.ethz.ch/~slist/rrd-users
> WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi

--
--------------------------------------------------------------

 <!-- Todd Caine - tcaine at eli.net
  Software Engineer
  Electric Lightwave, Inc.
  4400 NE 77th Avenue
  Vancouver, WA 98662
  Direct Dial: (360) 816-4344  //-->

--------------------------------------------------------------



--
Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
Archive     http://www.ee.ethz.ch/~slist/rrd-users
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi