On Thu, Dec 3, 2015 at 10:10 PM, Kevin Grittner <kgrittn@gmail.com> wrote:
> Is the c.h change above on anything resembling the right track for
> a patch for this? If not, what would such a patch look like?
It would be nicer if we could come up with an interface that didn't
require #ifdefs everywhere it's used.
Something like
... pg_maybe_atomic int64 threshold_timestamp;
...
SpinLockAcquire_if_no_atomics(...)
threshold_timestamp = &oldSnapshotControl->threshold_timestamp;
SpinLockRelease_if_no_atomics(...)
return threshold_timestamp;
--
greg