From: "dtuttle1@..." <dtuttle1@...>
Date: 2007-07-18T02:30:08+09:00
Subject: Re: How to reclaim memory without GC.start

On Jul 17, 2:51 am, "Robert Klemme" <shortcut...@googlemail.com>
wrote:
> 2007/7/17, Joel VanderWerf <vj...@path.berkeley.edu>:
>
>
>
> > Travis D Warlick Jr wrote:
> > > Joel VanderWerf wrote:
> > >> Travis D Warlick Jr wrote:
> > >>> Lionel Bouton wrote:
>
> > >>>     while buffer[0...512] = file.read(512)
>
> > >> Do you mean file.read(512, buffer) ?
>
> > > Ahh, yes.  That would be an much prettier way to do it.
>
> > >     while file.read(512, buffer)
>
> > It's not just prettier. With an assignment like
>
> > buffer[0...512] = file.read(512)
>
> > there is an intermediate string that instantly becomes garbage.
>
> There is a better way to do it:
>
> buffer = "." * 1024
> while STDIN.read(1024, buffer)
>   print buffer
> end
>
> So the original code should be rewritten as
>
> File.open file_path do |file|
>   buffer = "." * 512
>   while file.read(512, buffer)
>     stream_host_connection.write buffer
>     stream_host_connection.flush
>   end
> end
>
> The main point being here to reuse the buffer.  No C extension needed.
>  Seehttp://www.ruby-doc.org/core/classes/IO.html#M002295
>
> Kind regards
>
> robert

It works perfectly! Thanks everyone!