[jira] Closed: (MODPYTHON-182) Memory leak in request readline()

["Graham Dumpleton (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MODPYTHON-182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Graham Dumpleton closed MODPYTHON-182.
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> Memory leak in request readline()
> ---------------------------------
>
>                 Key: MODPYTHON-182
>                 URL: https://issues.apache.org/jira/browse/MODPYTHON-182
>             Project: mod_python
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.3, 3.2.x, 3.2.10
>         Environment: Apache 2.0.55 mpm-worker
>            Reporter: Jim Gallacher
>         Assigned To: Jim Gallacher
>             Fix For: 3.3
>
>
> There is at least one memory leak request.readline(). I'm currently auditing the code so there may well be others.
> I think the leak will only occur when the request body is incompletely read with readline, which is likely an unusual corner case. The following demostrates the leak:
> Consider a request body consisting of:
> '\n'.join([ 'a'*100 for i in xrange(0, 100) ])
> and using this handler:
> def handler(req):
>     # Handler reads 20 lines but request contains 100 lines.
>     # Since the body is not completely read, the buffer allocated
>     # in requestobject.c req_readline is never freed.
>     req.content_type = 'text/plain'
>     count = 0
>     for i in range(0, 20):
>         line = req.readline()
>         count += 1
>     req.write('ok readline_partial: %d lines read' % count)
>     return apache.OK
> With this test setup I'm seeing a leak of approx 10k bytes per request.

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