RE: [HACKERS] spinlock freeze again

> -----Original Message-----
> From: Bruce Momjian [mailto:maillist@candle.pha.pa.us]
> Sent: Thursday, July 08, 1999 10:09 AM
> To: Hiroshi Inoue
> Cc: pgsql-hackers
> Subject: Re: [HACKERS] spinlock freeze again
> 
> 
> > > Are their any locks acquired before InitProcess()?
> > >
> > 
> > OidGenLockId spinlock is acquired in InitTransactionLog().
> > 
> > Regards.
> > 
> 
> Well, seems we have a Proc queue that holds locks, but for these other
> cases, we don't.  We could use the on_shmexit queue to add an cleanup
> handler once we get the lock, and remove it from the queue once we
> release the lock.  We don't currently have the ability to remove
> specific queue entries, but we could easily do that.
> 
> Is the lock failure a problem that happens a lot?
>

It doesn't happen oridinarily.
I don't remember well how it happend.
Probably it was caused by other spinlock(io_in_progress_lock ?)
freeze while testing 6.5-beta.
Regards.

Hiroshi Inoue
Inoue@tpf.co.jp