Messages in this thread | | | From | (Davide Libenzi) | Subject | Re: deadlock avoidance? | Date | Wed, 8 Dec 1999 01:11:20 +0100 |
| |
Wednesday, December 08, 1999 1:05 AM Alan Cox <alan@lxorguk.ukuu.org.uk> wrote : > > See at this implementation ( optimization = 0.0 ) : > Correctness ditto 8) > > > ++lock->count; \ > > These need to use atomic operations - dec and not zero etc >
Hi Alan,
++lock->count;
is executed only "if (lock->pid == getpid())" == the task already own the lock.
Cheers, Davide.
-- "Debian, the Freedom in Freedom."
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |