Re: pg_stat_statements locking

> On 12 Sep 2022, at 18:18, Julien Rouhaud <rjuju123@gmail.com> wrote:
>
> That being
> said I don't know if adding a timeout would be too expensive for the lwlock
> infrastructure.

Implementation itself is straightforward, but we need to add 3 impls of waiting for semaphore with timeout.
POSIX have sem_timedwait(). Windows' WaitForMultipleObjectsEx() have timeout arg. SysV have semtimedop().
That's what we need to add something like LWLockAcquireWithTimeout().

Does adding all these stuff sound like a good tradeoff for lock-safe pg_stat_statements? If so - I'll start to
implementthis. 

Best regards, Andrey Borodin.