Re: Sandboxed Python: memory limits?

Date	2011-04-07 10:01 +0200
From	"Martin v. Loewis" <martin@v.loewis.de>
Newsgroups	comp.lang.python
Subject	Re: Sandboxed Python: memory limits?
References	<mailman.62.1302055157.9059.python-list@python.org> <inij0j$v6v$1@online.de> <mailman.91.1302134778.9059.python-list@python.org>
Message-ID	<mailman.103.1302163340.9059.python-list@python.org> (permalink)

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Am 07.04.2011 02:06, schrieb Chris Angelico:
> On Thu, Apr 7, 2011 at 6:38 AM, Martin v. Loewis <martin@v.loewis.de> wrote:
>> You can adjust the implementations of PyMem_Malloc and PyObject_Malloc.
>> This would catch many allocations, but not all of them. If you adjust
>> PyMem_MALLOC instead of PyMem_Malloc, you catch even more allocations -
>> but extensions modules which directly call malloc() still would bypass
>> this accounting.
> 
> I'm not too concerned about extensions, here; in any case, I lock most
> of them off. I just want to prevent stupid stuff like this:
> 
> a='a'
> while True:
>     a+=a

That would certainly be caught by instrumenting PyObject_MALLOC. More
generally, I believe that if you instrument the functions I mentioned,
your use case is likely covered.

Regards,
Martin

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Thread

Sandboxed Python: memory limits? Chris Angelico <rosuav@gmail.com> - 2011-04-06 11:59 +1000
  Re: Sandboxed Python: memory limits? "Martin v. Loewis" <martin@v.loewis.de> - 2011-04-06 22:38 +0200
    Re: Sandboxed Python: memory limits? Chris Angelico <rosuav@gmail.com> - 2011-04-07 10:06 +1000
      Re: Sandboxed Python: memory limits? "Martin v. Loewis" <martin@v.loewis.de> - 2011-04-07 10:01 +0200
      Re: Sandboxed Python: memory limits? "Martin v. Loewis" <martin@v.loewis.de> - 2011-04-07 10:01 +0200
    Re: Sandboxed Python: memory limits? Chris Angelico <rosuav@gmail.com> - 2011-04-07 10:10 +1000
      Re: Sandboxed Python: memory limits? David Bolen <db3l.net@gmail.com> - 2011-04-07 14:36 -0400
        Re: Sandboxed Python: memory limits? Chris Angelico <rosuav@gmail.com> - 2011-04-08 04:59 +1000

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