Re: [PATCH] use unlocked io in getdelim

[Eric Blake]

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According to Paolo Bonzini on 8/27/2008 5:48 AM:
> Under MacOS, getc is not a macro, only getc_unlocked is.  This patch
> does two things: 1) it makes getdelim use getc_unlocked if it can wrap
> the calls with flockfile/funlockfile; 2) it makes getdelim omit the
> locking altogether if unlocked-io is in effect.  It speeds up sed by
> almost 2x in very simple scripts with very little regular expression
> matching (such as '/^something/!d').
> 
> Ok?

Sounds interesting.  How does this compare with the current approach used
by getndelim2, which uses freadptr to avoid getc?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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