[PD] share-mem lib

[Cyrille Henry]

ok, thanks for the explanation
cheers
c


Le 25/02/2013 16:48, IOhannes m zmoelnig a écrit :
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> On 2013-02-25 16:43, Cyrille Henry wrote:
>>
>>
>> Le 25/02/2013 16:17, IOhannes m zmoelnig a écrit : On 2013-02-25
>> 15:54, Cyrille Henry wrote:
>>>>> on the other hand, pix_share_read / pix_share_write are
>>>>> dedicated to share pix data. but the id provide is not the
>>>>> shmid.
>>
>> right, it is a hashed version of the shmid, in order to make it
>> more easily usable within Pd.
>>> i'm curious : what make the hash shmid more usable than the
>>> integer Id? i used the int id for shmem because i did not find
>>> any good reason not to.
>>
>
> without checking the actual code:
> the shmid can be any 32bit integer, e.g. 156823457
> since Pd uses 32bit single precision floats, the given id might not be
> representable by a Pd-atom.
>
> the hash i'm using is only 16bit, and thus always representable by a
> Pd-atom.
>
> ftgmasdr
> IOhannes
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