[Sbcl-commits] CVS: sbcl/src/compiler fndb.lisp,1.168,1.169

[Alastair B. <lis...@us...>]

Update of /cvsroot/sbcl/sbcl/src/compiler
In directory sfp-cvsdas-3.v30.ch3.sourceforge.com:/tmp/cvs-serv26013/src/compiler

Modified Files:
	fndb.lisp 
Log Message:
"1.0.41.2": threads: Add memory-barrier framework.

  * New file, src/code/barrier.lisp, containing the baseline
implementation.

  * Added the barrier functions to the compiler function database.

  * Export the interface macro, BARRIER, from SB!THREAD and the
underlying barrier functions from SB!VM.

  * Document a new architecture-dependent build-time feature,
MEMORY-BARRIER-VOPS, for controlling the behavior and inlining of
the interpreter stubs for the barrier functions.


Index: fndb.lisp
===================================================================
RCS file: /cvsroot/sbcl/sbcl/src/compiler/fndb.lisp,v
retrieving revision 1.168
retrieving revision 1.169
diff -u -d -r1.168 -r1.169
--- fndb.lisp	6 Apr 2010 12:43:57 -0000	1.168
+++ fndb.lisp	4 Aug 2010 17:58:15 -0000	1.169
@@ -1577,6 +1577,16 @@
   ())
 (defknown style-warn (t &rest t) null ())
 
+
+;;;; memory barriers
+
+(defknown sb!vm:%compiler-barrier () (values) ())
+(defknown sb!vm:%memory-barrier () (values) ())
+(defknown sb!vm:%read-barrier () (values) ())
+(defknown sb!vm:%write-barrier () (values) ())
+(defknown sb!vm:%data-dependency-barrier () (values) ())
+
+
 ;;;; atomic ops
 (defknown %compare-and-swap-svref (simple-vector index t t) t
     (unsafe))