Hi,
On Tue, Aug 26, 2008 at 11:14:05PM +0200, Fons Adriaensen wrote:
> On Tue, Aug 26, 2008 at 11:02:37PM +0200, Dominic Sacré wrote:
>
> > Is this really an issue in Python? The Python interpreter is not thread
> > safe
> > anyway, there's a global interpreter lock that must be held by any thr
2008/8/26 Fons Adriaensen <[EMAIL PROTECTED]>:
>
> BUT: the python interpreter will release the GIL every
> so many bytecode instructions. There is AFAICS nothing
> that would prevent it from doing this in between the two
> operations that have to be atomic - it doesn't know they
> have to be.
>
M
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Fons Adriaensen wrote:
> On Tue, Aug 26, 2008 at 11:02:37PM +0200, Dominic Sacr� wrote:
>
>> Is this really an issue in Python? The Python interpreter is not thread safe
>> anyway, there's a global interpreter lock that must be held by any thread
>>
On Tue, Aug 26, 2008 at 11:14:05PM +0200, Fons Adriaensen wrote:
> To make all of this work correctly in all conditions, the
> essential part is that one can do [wait (S), release (M)]
> atomically.
And of course also [return from wait (S), acquire (M)]
--
FA
Laboratorio di Acustica ed Elettr
On Tue, Aug 26, 2008 at 11:02:37PM +0200, Dominic Sacré wrote:
> Is this really an issue in Python? The Python interpreter is not thread safe
> anyway, there's a global interpreter lock that must be held by any thread
> accessing Python objects.
> Depending on what you're trying to do, this migh
On Tuesday 26 August 2008 22:01:18 Fons Adriaensen wrote:
> AFAICS, for this reason, whatever happens in threading
> can't be correct, or at least not pre-emption and SMP
> safe.
Is this really an issue in Python? The Python interpreter is not thread safe
anyway, there's a global interpreter lock
[Fons Adriaensen]
>Does anyone know of a counting semaphare class/module
>in Python ? Given the lock provided by the built-in
>thread module it seems impossible to implement this
>(it does support multiple waiters which I don't need,
>but definitely is not counting). This also means that
>whatever
On Tue, Aug 26, 2008 at 09:55:07PM +0200, Arnold Krille wrote:
> Am Dienstag, 26. August 2008 schrieb Fons Adriaensen:
> > Does anyone know of a counting semaphare class/module
> > in Python ? Given the lock provided by the built-in
> > thread module it seems impossible to implement this
> > (it
Am Dienstag, 26. August 2008 schrieb Fons Adriaensen:
> Does anyone know of a counting semaphare class/module
> in Python ? Given the lock provided by the built-in
> thread module it seems impossible to implement this
> (it does support multiple waiters which I don't need,
> but definitely is not c
Hello all,
Does anyone know of a counting semaphare class/module
in Python ? Given the lock provided by the built-in
thread module it seems impossible to implement this
(it does support multiple waiters which I don't need,
but definitely is not counting). This also means that
whatever is defined i
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