Re: Rethinking MemoryContext creation

Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> On 12/11/2017 05:27 PM, Tom Lane wrote:
>> However, unless we want to run around and touch all the ~ 150 calls
>> with constant arguments, we'd have to set things up so that the default
>> behavior for AllocSetContextCreate is to not copy.  This risks breaking
>> callers in extensions.  Not entirely sure if it's worth that --- any
>> thoughts?

> I don't think silently breaking extensions is particularly attractive
> option, so I guess we'll have to run around and tweak the ~150 calls.

Meh.  I suppose that of the ~150 call sites, there are probably only
a dozen or two where it would actually make a performance difference,
so maybe this needn't be quite as invasive as I first thought.

            regards, tom lane