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Re: POSIX shared memory support
- From: Magnus Hagander <magnus(at)hagander(dot)net>
- To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
- Cc: James Mansion <james(at)mansionfamily(dot)plus(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, pgsql-hackers(at)postgresql(dot)org
- Subject: Re: POSIX shared memory support
- Date: Mon, 31 Mar 2008 22:23:32 +0200
- Message-id: <20080331222332.697da90e@mha-laptop> <text/plain>
Tom Lane wrote: > Magnus Hagander <magnus(at)hagander(dot)net> writes: > > James Mansion wrote: > >> (confused) Why can't you use mmap of /dev/zero and inherit the fd > >> into child processes? > > > This is what we do on win32 today. We don't use the sysv emulation > > layer anymore. > > Did we ever find an interlock that makes the win32 implementation > safe against the postmaster-dead-children-still-alive scenario? Yes. I don't remember the details offhand (and I'm at the airport right now), but the code that I put in there passed all those checks that we could think of. (The one that the old, sysv emulating, code didn't as well) //Magnus
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- Re: POSIX shared memory support
- From: Stephen Frost
- Re: POSIX shared memory support
- From: Tom Lane
- Re: POSIX shared memory support
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- Re: POSIX shared memory support
- From: Magnus Hagander
- Re: POSIX shared memory support
- From: Tom Lane
- Re: POSIX shared memory support
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