Re: [GENERAL] Difficult while acquiring LWLocks
On 03/05/2017 15:01, hariprasath nallasamy wrote: > > AFAIK yes this is the correct way to use multiple lwlocks. > > > Thanks.! > > Just curious, Is there any other way to do this.? Probably no, except asking for 10 different tranches :) -- Julien Rouhaud http://dalibo.com - http://dalibo.org -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Difficult while acquiring LWLocks
> AFAIK yes this is the correct way to use multiple lwlocks. > Thanks.! Just curious, Is there any other way to do this.?
Re: [GENERAL] Difficult while acquiring LWLocks
On 03/05/2017 13:08, hariprasath nallasamy wrote:
> Hi all
>There is an use case, where i want some 10 LightWeight Locks and
> after 9.6 LW locks api's (LWLockAssign) are changed a bit and i am
> confused too.
>
> Only reference i cant get was from pg_stat_statement :(
>
> Since GetNamedLWLockTranche method will return the base address of the
> specified tranche.
>
> From pg_init
> *" RequestNamedLWLockTranche("Some_10_LWLocks", 10); "
>
>
> *For getting those locks which were requested from pg_init
> *" LWLockPadded *lwLockPadded = GetNamedLWLockTranche("Some_10_LWLocks");
>LWLock *lock = &(lwLockPadded[index in 0 to 9]).lock; "*
>
> Is the above code snippet a valid for requesting some 10 LWLocks?
>
>
AFAIK yes this is the correct way to use multiple lwlocks.
--
Julien Rouhaud
http://dalibo.com - http://dalibo.org
--
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[GENERAL] Difficult while acquiring LWLocks
Hi all
There is an use case, where i want some 10 LightWeight Locks and after
9.6 LW locks api's (LWLockAssign) are changed a bit and i am confused too.
Only reference i cant get was from pg_stat_statement :(
Since GetNamedLWLockTranche method will return the base address of the
specified tranche.
>From pg_init
*" RequestNamedLWLockTranche("Some_10_LWLocks", 10); "*For getting those
locks which were requested from pg_init
*" LWLockPadded *lwLockPadded = GetNamedLWLockTranche("Some_10_LWLocks");
LWLock *lock = &(lwLockPadded[index in 0 to 9]).lock; "*
Is the above code snippet a valid for requesting some 10 LWLocks?
TIA
harry
