>> Per previous discussions, here are two functions to send INT and TERM
>> signals to other backends.They permit only INT and TERM, and permits
>> sending only to postgresql backends (as registered in pgstat).
>
>Why does this depend on pgstat? ISTM it would be better to use the
>per-backend PGPROC information, which is stored in shared memory.
>Consider TransactionIdIsInProgress() for an example.
I guess the main reason is that I didn't find how to do it. With that
pointer, I can probably redo it.
The other thought is that you're not going to have much use of this if
you don't have pgstat anyway - how are you going to find out which
backends actually exist?
But I could certainly give it a try to recode it on that code.
//Magnus