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Implement atomic_swap_{32,64,int,long,ptr}(9).

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This commit is contained in:
Marius Strobl 2018-07-28 15:42:57 +00:00
parent a0e00905f0
commit c98027b2bc
1 changed files with 9 additions and 2 deletions
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11
sys/sparc64/include/atomic.h
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@ -154,14 +154,15 @@
e; \ e; \
}) })
#define atomic_st(p, v, sz) do { \ #define atomic_st(p, v, sz) ({ \
itype(sz) e, r; \ itype(sz) e, r; \
for (e = *(volatile itype(sz) *)(p);; e = r) { \ for (e = *(volatile itype(sz) *)(p);; e = r) { \
r = atomic_cas((p), e, (v), sz); \ r = atomic_cas((p), e, (v), sz); \
if (r == e) \ if (r == e) \
break; \ break; \
} \ } \
} while (0) e; \
})
#define atomic_st_acq(p, v, sz) do { \ #define atomic_st_acq(p, v, sz) do { \
atomic_st((p), (v), sz); \ atomic_st((p), (v), sz); \
@ -310,6 +311,12 @@ static __inline void \
atomic_store_rel_ ## name(volatile ptype p, vtype v) \ atomic_store_rel_ ## name(volatile ptype p, vtype v) \
{ \ { \
atomic_st_rel((p), (v), sz); \ 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 static __inline void