RE: [PHP-DEV] Re: drastic memory consumption with a sequenceof exceptions
I have opened the bug #34065, but it is very hard to fix it.
Thanks. Dmitry.
> -----Original Message-----
> From: Ron Korving [mailto:r.korving@xit.nl]
> Sent: Wednesday, August 10, 2005 1:55 PM
> To: internals@lists.php.net
> Subject: Re: [PHP-DEV] Re: drastic memory consumption with a
> sequenceof exceptions
>
>
> You're right, using that file to create a big piece of data
> was just for demonstration purposes. In my personal case it's
> XML parsing. The way I read what you just said is that this
> is behavior by design. But if I don't throw Exceptions,
> memory usage stays constant. Throwing and catching these
> exceptions are the exception-to-the-rule.
>
> Nonetheless, if this is truly by design.. maybe that's
> something to look into for PHP6.
>
> Ron
>
> "Marcus Boerger" <helly@php.net> schreef in bericht
> news:124244453.20050810114522@marcus-boerger.de...
> > Hello Ron,
> >
> > Wednesday, August 10, 2005, 8:47:25 AM, you wrote:
> >
> > > Okay Andi, the script in this message is as simple as it gets. I
> > > used a syslog file to create a load of data in this case, but of
> > > course you can
> use
> > > any (text) file for this.
> >
> > > #!/usr/bin/php5
> > > <?
> > > function process()
> > > {
> > > $data = file("/var/log/syslog.0");
> >
> > > foreach ($data as $line)
> > > throw new Exception("error");
> >
> > What makes you think the file would be closed. Erm the
> array deleted?
> > And that is your problem you are unnecessarily reading all the file
> > into an array. Try using the same with FileObject instead, which
> > should reduce memory usage a lot:
> >
> > foreach(FileObject($file) as $data) throw new Exception("error");
> >
> > But of course you only did that to demonstrate the memory problem
> > which in fact simply means that we don't do a full stack
> cleanup like
> > c++ would do here (php != c++).
> >
> > In php we do the cleanup at script termination. That is also the
> > reason why php is not perfectly suitable for console apps
> especially
> > when it
> comes
> > to daemons.
> >
> > best regards
> > marcus
>
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Thread (19 messages)