[haiku-development] Re: AHCI driver ready for testing
- From: Ingo Weinhold <bonefish@xxxxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Mon, 01 Oct 2007 17:49:06 +0200
On 2007-10-01 at 17:24:52 [+0200], Axel Dörfler <axeld@xxxxxxxxxxxxxxxx>
wrote:
> Ingo Weinhold <bonefish@xxxxxxxxxxxxxxx> wrote:
> > > queue: 86 4d 32 6b 92 29 36
> > > last acquired by: 134, count: 1024
> > > last released by: 134, count: 1
> > Unless I'm mistaken, this means, the thread has acquired the
> > semaphore with
> > count 1024 (as write lock) and then released it with count 1 (as read
> > lock).
> >
> > Since the commit list still seems to be out of order, I haven't seen
> > Axel's
> > recent commits, but I guess one of them is to blame. I'll have a
> > look.
>
> In this case the above should read: last acquired by: -134, count: 1024
Yeah, right.
> It looks more like it first had a read lock, and then later acquired a
> write lock that it still owns.
Yes, it had a read lock, released it, acquired a write lock successfully
and is now waiting for a read lock while still having the write lock.
CU, Ingo
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