tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: config_alldevs_lock is evil



dyoung%pobox.com@localhost said:
> How would you suggest to synchronize access to the device_t array in a
> cfdriver_t?  I could use a mutex per cfdriver_t, just for example, but
> maybe you have in mind a better way.

As Masao said, a per-cfdriver mutex is acceptable.
But I think there is a more general problem: The driver reads a pointer
which can become invalid immediately after the lock is released, no
matter how the locking is done. Or am I missing something?

best regards
Matthias



------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzende des Aufsichtsrats: MinDir'in Baerbel Brumme-Bothe
Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender),
Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------


Home | Main Index | Thread Index | Old Index