On Tue, Mar 20, 2007 at 12:12:45PM -0400, Tom Lane wrote:
> Magnus Hagander <[EMAIL PROTECTED]> writes:
> >>> I think you do still need the on_shmem_exit detach callback.
> >> 
> >> Ok, will look into that. Haven't tested that scenario.
> > That was indeed so. Added in new version, attached.
> If it handles the restart-after-backend-crash scenario and correctly
> locks out starting a fresh postmaster (after postmaster crash) until
> all old backends are gone, then it's probably ready to commit for
> more-widespread testing.

It does, at least in my tests. I have found one thing that needs to be
chagned for terminal server sessions, and then I need to update the build
system to use it on mingw as well. Will do that and then commit.

> I note that sysv_shmem contains some #ifdef WIN32 and #ifdef __CYGWIN__
> kluges; will it now be possible to remove those, or will the Cygwin
> build still be using that code?

I *think* so. I *think* the CYGWIN port does not rely on #ifdef WIN32s
anymore (which is corret given that it's not really win32). If I do a grep
of the sourcecode, I get a bunch of things like
./utils/mmgr/mcxt.c:#if defined(WIN32) || defined(__CYGWIN__)
which would indicate that at least some places know they're different.

I can include removal of those in my change, but I'm not in a position to
test them myself. I guess we could do it and see if the buildfarm breaks,
and if that revert it.


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