On Wed, 19 Dec 2007, Warner Losh wrote:
imp 2007-12-19 04:30:11 UTC
FreeBSD src repository
Modified files:
lib/libc/stdtime localtime.c
Log:
Reduce lock contention for simple cases.
# this really should be done with pthread_once, but I've debugged this code.
Reviewed by: arch@
Reviewers weren't happy with this. I now think that the only bug in
it is that it unnecesarily depends i386 memory semantics (that writes
are not reordered). There should be a write barrier before the flag
is set, to ensure that the writes which initialize things occur before
the write that sets the flag.
Bruce
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