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Re: getline
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From: |
Paul Eggert |
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Subject: |
Re: getline |
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Date: |
Sun, 17 Jul 2005 22:40:59 -0700 |
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User-agent: |
Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) |
Simon Josefsson <address@hidden> writes:
> 5. I have no idea whether using flockfile/funlockfile is appropriate.
I'd say it's appropriate, but only if flockfile/funlockfile exist.
They don't exist on all platforms. POSIX says they're optional;
they're part of the Thread Safe Functions extension. On platforms
where they don't exist, you can define them to be no-ops, as
unlocked-io does. Applications that are using unlocked-io should also
make them no-ops.
> getndelim2 does not appear to do any locking, though.
Correct. Currently it's used only by single-threaded apps. It could
be upgraded to multithreaded, using the same technique that you are
using for getdelim.