[Python-Dev] Py_BEGIN_ALLOW_THREADS around readdir()?

[Ronald Oussoren]

On 17-apr-2006, at 18:19, Martin v. Löwis wrote:

> Currently, the readdir() call releases the GIL. I believe
> this is not thread-safe, because readdir() does not need
> to be re-entrant; we should use readdir_r where available
> to get a thread-safe version.
>
> Comments?

AFAIK readdir is only unsafe when multiple threads use the same DIR*  
at the same time. The spec[1] seems to agree with me.

It seems to me that this means the implementation of listdir in  
posixmodule.c doesn't need to be changed.

Ronald

[1] : http://www.opengroup.org/onlinepubs/009695399/functions/ 
readdir.html
>
> Regards,
> Martin
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