On Monday, January 16, 2012 1:15:14 am David Xu wrote: > Author: davidxu > Date: Mon Jan 16 06:15:14 2012 > New Revision: 230201 > URL: http://svn.freebsd.org/changeset/base/230201 > > Log: > Insert read memory barriers.
I think using atomic_load_acq() on sem->nwaiters would be clearer as it would indicate which variable you need to ensure is read after other operations. In general I think raw rmb/wmb usage should be avoided when possible as it is does not describe the programmer's intent as well. -- John Baldwin _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
