Re: Storing a dynahash for an entire connection or

Neil Conway wrote:
> On Mon, 2006-11-27 at 20:11 +0000, Tom Dunstan wrote:
>   
>> That's the obvious solution (or perhaps in CurTransactionContext), but 
>> when the function is called in a subsequent transaction, how does it 
>> determine that the static pointer was allocated from a context which has 
>> since vanished?
>>     
>
> If you're content with your allocations never being automatically
> released for the duration of the session (which sounds like the behavior
> Greg would like, I'm guessing), you can just allocate the hash table in
> TopMemoryContext, in which case you wouldn't need to worry about the
> context of allocation vanishing beneath your feet.
>
>   

Maybe I have misunderstood, but I don't see in this case how to 
determine that the cached data is still valid.

cheers

andrew