Tom Lane wrote:
> Martijn van Oosterhout <kleptog@svana.org> writes:
> > On Fri, Jul 14, 2006 at 02:50:31PM +0800, Qingqing Zhou wrote:
> >> Notice that though newStart is ALIGNOF_BUFFER, ShmemBase is not. Thus the
> >> newSpace is not aligned as we disired.
>
> > How can ShmemBase not be aligned? Surely it's page-aligned?
>
> That's certainly what the code expects. I'm disinclined to apply this
> patch unless you can identify a real system where ShmemBase might not
> point to a page boundary.
>
> (Note: in a standalone backend, the "shared memory segment" is just a
> huge malloc chunk, and so depending on your platform it might not be
> page-aligned. I don't feel a need to add cycles to ShmemAlloc to
> optimize this case, though. We only care about performance in the
> normal shared-memory case.)
Should we add an assert?
-- Bruce Momjian bruce@momjian.us EnterpriseDB http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
