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Re: What happens to mappings when closing file?
From: |
Samuel Thibault |
Subject: |
Re: What happens to mappings when closing file? |
Date: |
Sun, 4 Apr 2010 12:43:51 +0200 |
User-agent: |
Mutt/1.5.12-2006-07-14 |
olafBuddenhagen@gmx.net, le Sat 03 Apr 2010 17:38:01 +0200, a écrit :
> the proxy objects are used so the same pager can be provided to
> several clients mapping the same file, but with different permissions?
Yes.
> But if several clients share a pager, doesn't that mean there is no way
> to shut down an individual client's mapping when the client closes the
> file?
Mmm, could you be more precise?
For instance,
fd = open("foo", ...)
c = mmap(fd);
close(fd);
is supposed to keep c mapped. I don't know if that is the case you are
wondering about.
Samuel