Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.datemas.de!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path: <torriem+gmail@torriefamily.org>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.026
X-Spam-Evidence: '*H*': 0.95; '*S*': 0.00; 'programmer': 0.03; 'fallback': 0.16; 'from:addr:torriem': 0.16; 'from:name:michael torrie': 0.16; 'thread?': 0.16; 'do,': 0.16; 'wrote:': 0.18; 'creating': 0.23; 'this?': 0.23; 'header:User-Agent:1': 0.23; 'nearly': 0.26; 'header:In-Reply-To:1': 0.27; 'linux': 0.33; "can't": 0.35; 'there': 0.35; 'really': 0.36; 'doing': 0.36; 'implement': 0.38; 'message-id:@gmail.com': 0.38; 'process,': 0.38; 'same.': 0.38; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'rather': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'most': 0.60
X-Virus-Scanned: amavisd-new at torriefamily.org
Date: Thu, 05 Dec 2013 22:16:21 -0700
From: Michael Torrie <torriem@gmail.com>
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:10.0.12) Gecko/20130105 Thunderbird/10.0.12
MIME-Version: 1.0
To: python-list@python.org
Subject: Re: Embedding multiple interpreters
References: <52A137B3.7010408@entropicsoftware.com>
In-Reply-To: <52A137B3.7010408@entropicsoftware.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.3622.1386307033.18130.python-list@python.org>
Lines: 11
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1386307033 news.xs4all.nl 2927 [2001:888:2000:d::a6]:55029
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:61112

On 12/05/2013 07:34 PM, Garthy wrote:
> - My fallback if I can't do this is to implement each instance in a 
> dedicated *process* rather than per-thread. However, there is a 
> significant cost to doing this that I would rather not incur.

What cost is this? Are you speaking of cost in terms of what you the
programmer would have to do, cost in terms of setting things up and
communicating with the process, or the cost of creating a process vs a
thread?  If it's the last, on most modern OS's (particularly Linux),
it's really not that expensive.  On Linux the cost of threads and
processes are nearly the same.