K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2009-11-20T19:19:51.701752Z
K 7
svn:log
V 575
Add an internal _once() method.  This works identical to pthread_once(3)
with the additional property that it is safe for routines in libc to use
in both single-threaded and multi-threaded processes.  Multi-threaded
processes use the pthread_once() implementation from the threading library
while single-threaded processes use a simplified "stub" version internal
to libc.  The libc stub-version of pthread_once() now also uses the
simplified "stub" version as well instead of being a nop.

Reviewed by:	deischen, Matthew Fleming @ Isilon
Suggested by:	alc
MFC after:	1 week

END