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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@2ndquadrant.com>
cc: Heikki Linnakangas <hlinnakangas@vmware.com>,
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Subject: Re: Something fishy happening on frogmouth
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Comments: In-reply-to Andres Freund <andres@2ndquadrant.com>
 message dated "Mon, 04 Nov 2013 12:19:12 +0100"
Date: Mon, 04 Nov 2013 10:05:54 -0500
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Andres Freund <andres@2ndquadrant.com> writes:
> On 2013-11-04 13:13:27 +0200, Heikki Linnakangas wrote:
>> On 04.11.2013 11:55, Andres Freund wrote:
>>> Also, I don't think it's portable across platforms to access segments
>>> that already have been unlinked.

>> See
>> http://pubs.opengroup.org/onlinepubs/009695299/functions/shm_unlink.html:
>> "If one or more references to the shared memory object exist when the object
>> is unlinked, the name shall be removed before shm_unlink() returns, but the
>> removal of the memory object contents shall be postponed until all open and
>> map references to the shared memory object have been removed."

> We also support sysv shmem and have the same cleanup problem there.

And what about Windows?

			regards, tom lane


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