Selon Russell Stuart <[EMAIL PROTECTED]>:
> I am using pcsc with a USB CCID reader. Every so often it hangs.
> The reason is revealed by this backtrace, which was captured
> while it was hung:
Very nice catch.
> The attached patch fixes the problem by forcing hotplug reload
> events to be handled synchronously.
Thanks
> Unfortunately it probably
> isn't acceptable in its current form as it is very Unix dependant,
> and pcscd is obviously meant to be multi-platform. To make it
> multi-platform it would have to be a polling loop which is
> something I dislike, or your would have to abstract
> pthread_cond_wait in your thread_*.c libraries.
I am not sure pthread_cond_wait() would help here. From its manpage I see:
ASYNC-SIGNAL SAFETY
The condition functions are not async-signal safe, and should not be
called from a signal handler. In particular, calling pthread_cond_sig-
nal or pthread_cond_broadcast from a signal handler may deadlock the
calling thread.
So pthread_cond_signal() can't be used in HPReCheckSerialReaders() called from
signal_reload().
Am I right?
Bye
--
Ludovic Rousseau [EMAIL PROTECTED]
-- Normaliser Unix c'est comme pasteuriser le Camembert, L.R. --
