X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=urcu%2Fuatomic%2Fgeneric.h;h=54d2a8c34a4b744fa021e03ef4fd0a78eb343465;hb=d0bbd9c2e8322f036e0a0a70091cae98cad7e390;hp=04f4afd715800dd02446183d183c4f896de142c1;hpb=e56d99bf2046a163875df80bab5195f38606dfde;p=userspace-rcu.git

diff --git a/urcu/uatomic/generic.h b/urcu/uatomic/generic.h
index 04f4afd..54d2a8c 100644
--- a/urcu/uatomic/generic.h
+++ b/urcu/uatomic/generic.h
@@ -29,7 +29,7 @@ extern "C" {
 #endif
 
 #ifndef uatomic_set
-#define uatomic_set(addr, v)	CMM_STORE_SHARED(*(addr), (v))
+#define uatomic_set(addr, v)	((void) CMM_STORE_SHARED(*(addr), (v)))
 #endif
 
 #ifndef uatomic_read
@@ -41,8 +41,10 @@ static inline __attribute__((always_inline))
 void _uatomic_link_error()
 {
 #ifdef ILLEGAL_INSTR
-	/* generate an illegal instruction. Cannot catch this with linker tricks
-	 * when optimizations are disabled. */
+	/*
+	 * generate an illegal instruction. Cannot catch this with
+	 * linker tricks when optimizations are disabled.
+	 */
 	__asm__ __volatile__(ILLEGAL_INSTR);
 #else
 	__builtin_trap ();
@@ -122,6 +124,9 @@ void _uatomic_and(void *addr, unsigned long val,
 	(_uatomic_and((addr),			\
 		caa_cast_long_keep_sign(v),	\
 		sizeof(*(addr))))
+#define cmm_smp_mb__before_uatomic_and()	cmm_barrier()
+#define cmm_smp_mb__after_uatomic_and()		cmm_barrier()
+
 #endif
 
 /* uatomic_or */
@@ -159,8 +164,12 @@ void _uatomic_or(void *addr, unsigned long val,
 	(_uatomic_or((addr),			\
 		caa_cast_long_keep_sign(v),	\
 		sizeof(*(addr))))
+#define cmm_smp_mb__before_uatomic_or()		cmm_barrier()
+#define cmm_smp_mb__after_uatomic_or()		cmm_barrier()
+
 #endif
 
+
 /* uatomic_add_return */
 
 #ifndef uatomic_add_return
@@ -328,6 +337,9 @@ void _uatomic_and(void *addr, unsigned long val, int len)
 	(_uatomic_and((addr),			\
 		caa_cast_long_keep_sign(v),	\
 		sizeof(*(addr))))
+#define cmm_smp_mb__before_uatomic_and()	cmm_barrier()
+#define cmm_smp_mb__after_uatomic_and()		cmm_barrier()
+
 #endif /* #ifndef uatomic_and */
 
 #ifndef uatomic_or
@@ -399,6 +411,9 @@ void _uatomic_or(void *addr, unsigned long val, int len)
 	(_uatomic_or((addr),			\
 		caa_cast_long_keep_sign(v),	\
 		sizeof(*(addr))))
+#define cmm_smp_mb__before_uatomic_or()		cmm_barrier()
+#define cmm_smp_mb__after_uatomic_or()		cmm_barrier()
+
 #endif /* #ifndef uatomic_or */
 
 #ifndef uatomic_add_return
@@ -559,19 +574,27 @@ unsigned long _uatomic_exchange(void *addr, unsigned long val, int len)
 
 #ifndef uatomic_add
 #define uatomic_add(addr, v)		(void)uatomic_add_return((addr), (v))
+#define cmm_smp_mb__before_uatomic_add()	cmm_barrier()
+#define cmm_smp_mb__after_uatomic_add()		cmm_barrier()
 #endif
 
 #define uatomic_sub_return(addr, v)	\
 	uatomic_add_return((addr), -(caa_cast_long_keep_sign(v)))
 #define uatomic_sub(addr, v)		\
 	uatomic_add((addr), -(caa_cast_long_keep_sign(v)))
+#define cmm_smp_mb__before_uatomic_sub()	cmm_smp_mb__before_uatomic_add()
+#define cmm_smp_mb__after_uatomic_sub()		cmm_smp_mb__after_uatomic_add()
 
 #ifndef uatomic_inc
 #define uatomic_inc(addr)		uatomic_add((addr), 1)
+#define cmm_smp_mb__before_uatomic_inc()	cmm_smp_mb__before_uatomic_add()
+#define cmm_smp_mb__after_uatomic_inc()		cmm_smp_mb__after_uatomic_add()
 #endif
 
 #ifndef uatomic_dec
 #define uatomic_dec(addr)		uatomic_add((addr), -1)
+#define cmm_smp_mb__before_uatomic_dec()	cmm_smp_mb__before_uatomic_add()
+#define cmm_smp_mb__after_uatomic_dec()		cmm_smp_mb__after_uatomic_add()
 #endif
 
 #ifdef __cplusplus