| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Magnus Hagander <magnus(at)hagander(dot)net> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Posix Shared Mem patch |
| Date: | 2012-06-28 14:11:31 |
| Message-ID: | 11577.1340892691@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
... btw, I rather imagine that Robert has already noticed this, but OS X
(and presumably other BSDen) spells the flag "MAP_ANON" not
"MAP_ANONYMOUS". I also find this rather interesting flag there:
MAP_HASSEMAPHORE Notify the kernel that the region may contain sema-
phores and that special handling may be necessary.
By "semaphore" I suspect they mean "spinlock", so we'd better turn this
flag on where it exists.
regards, tom lane
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