K 10
svn:author
V 4
jkim
K 8
svn:date
V 27
2013-08-01T23:38:57.904628Z
K 7
svn:log
V 294
Add a new atomic operation atomic_swap for x86.  This operation atomically
loads the current value and stores a new value at once, i. e.,

		tmp = *p; *p = v; return (tmp);

Note atomic_readandclear is now obsolete and reimplemented as a macro around
atomic_swap where the new value v is zero.

END