Re: pgsql: Provide much better wait information in pg_stat_activity.

On 2016-03-10 18:55:47 +0000, Robert Haas wrote:
> Provide much better wait information in pg_stat_activity.
>
> When a process is waiting for a heavyweight lock, we will now indicate
> the type of heavyweight lock for which it is waiting.  Also, you can
> now see when a process is waiting for a lightweight lock - in which
> case we will indicate the individual lock name or the tranche, as
> appropriate - or for a buffer pin.

My compiler quite validly complains:

/home/andres/src/postgresql/src/backend/storage/lmgr/lmgr.c: In function ‘GetLockNameFromTagType’:
/home/andres/src/postgresql/src/backend/storage/lmgr/lmgr.c:1018:9: warning: function may return address of local
variable[-Wreturn-local-addr] 
  return locktypename;
         ^
/home/andres/src/postgresql/src/backend/storage/lmgr/lmgr.c:1007:8: note: declared here
  char  tnbuf[32];
        ^
In file included from /home/andres/src/postgresql/src/backend/commands/dbcommands.c:20:0:


Andres