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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AFAIK yes this is the correct way to use multiple lwlocks.

Thanks.!

Just curious, Is there any other way to do this.?

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

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