Wireshark · Wireshark-dev: Re: [Wireshark-dev] The RSVD dissector and 32-bit builds ...

[Richard Sharpe <realrichardsharpe@xxxxxxxxx>]

On Mon, Feb 16, 2015 at 7:11 AM, Evan Huus <eapache@xxxxxxxxx> wrote:
> On Mon, Feb 16, 2015 at 10:08 AM, Richard Sharpe
> <realrichardsharpe@xxxxxxxxx> wrote:
>> On Mon, Feb 16, 2015 at 6:55 AM, Evan Huus <eapache@xxxxxxxxx> wrote:
>>> Create the wmem_map using g_int64_equal instead of g_direct_equal and
>>> wmem_int64_hash instead of g_direct_hash. Create a wmem_file_scope()
>>> copy of the key, and pass the resulting pointer to the insert
>>> function.
>>
>> Hmmm, why do we need a wmem_file_scope() copy of the key? We get the
>> key in each request and response and I don't store the key anywhere.
>
> The map itself has to store the key in order to use it for future
> lookups. When the key is only 32 bits you can make the pointer itself
> store the key, and since the pointer gets copied you don't need an
> explicit copy of the key. But when the pointer is just a pointer, you
> need a file-scope copy of the key.

OK, I assumed that the map always copied the key ...

Since the key comes from a guint64 that comes straight from the
capture that should be easy.

-- 
Regards,
Richard Sharpe
(何以解憂？唯有杜康。--曹操)