Author: hselasky
Date: Fri Apr 5 10:00:40 2019
New Revision: 345906
URL: https://svnweb.freebsd.org/changeset/base/345906
Log:
MFC r336832:
Implement atomic_swap_{32,64,int,long,ptr}(9).
Modified:
stable/11/sys/sparc64/include/atomic.h
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/sparc64/include/atomic.h
==============================================================================
--- stable/11/sys/sparc64/include/atomic.h Fri Apr 5 07:45:13 2019
(r345905)
+++ stable/11/sys/sparc64/include/atomic.h Fri Apr 5 10:00:40 2019
(r345906)
@@ -152,14 +152,15 @@
e; \
})
-#define atomic_st(p, v, sz) do {
\
+#define atomic_st(p, v, sz) ({
\
itype(sz) e, r; \
for (e = *(volatile itype(sz) *)(p);; e = r) { \
r = atomic_cas((p), e, (v), sz); \
if (r == e) \
break; \
} \
-} while (0)
+ e; \
+})
#define atomic_st_acq(p, v, sz) do {
\
atomic_st((p), (v), sz); \
@@ -308,6 +309,12 @@ static __inline void
\
atomic_store_rel_ ## name(volatile ptype p, vtype v) \
{ \
atomic_st_rel((p), (v), sz); \
+} \
+ \
+static __inline vtype \
+atomic_swap_ ## name(volatile ptype p, vtype v)
\
+{ \
+ return ((vtype)atomic_st((p), (v), sz)); \
}
static __inline void
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
