[webkit-dev] Curl resourcehandle leaks in Linux/Gtk port

Mike Emmel mike.emmel at gmail.com
Wed Sep 10 08:10:40 PDT 2008

Look I had to change to one multi handle per handle basically just and
asynchronous handle to get everything to clean up.
Its a significant refactoring and better design.

What it points to on the curl side is the need for and asynchronous
simple handle.

Also polling was removed as much as possible curl does not send decent
time outs if it has real work
to perform so this is still a issue. However open file handles are
handled in the event loop select.

Curl needs to be extended to have the concept of a work request and a
longer term watch timeout.

So in my opinion the issues are fixed at least to the extent possible
without help from the curl team.

On Wed, Sep 10, 2008 at 7:53 AM, zaheer ahmad <zaheer.mot at gmail.com> wrote:
> hi,
> The fix only helps little as we see the bigger leaks in curl. feedback from
> curl experts suggests that this design is correct.. let me know if you are
> aware of this issue
> == here's the mail snapshot.
> we are seeing big leaks in curl (Curl_connect - 600-800k and Curl_open -
> ~200k) when we browse through as little as few websites. This values
> keep increasing as we browse more sites.
> heres the high level logic of webkit=curl interaction
> 1- create a multi handle at the start of program
> 2- keep creating easy handles for each request
> 3- when request is done remove it from multi handle and clean up the
> handle
> 4- multi handle is never released (stays till the end of program)
> This design assumes that multi handle has a bounded memory usage as we
> keep adding and removing easy handles, but that seems to be not true
> with the leaks.
> ==
>>> Now I just started to use valgrind to find other memory leaks, so this
> and other issues should be hopefully fixed soon.
> these are not traditional memory leaks, you are holding on to things longer
> than you should, so they are more functional leaks. Does valgrind help in
> that too?
> thanks,
> Zaheer
> On Wed, Sep 10, 2008 at 8:02 PM, Marco Barisione
> <marco.barisione at collabora.co.uk> wrote:
>> Il giorno mer, 10/09/2008 alle 07.22 -0700, Mike Emmel ha scritto:
>> > This leak is fixed in the ncurl port.
>> Is it possible to backport the fix?
>> --
>> Marco Barisione
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