Remove unused sync_core() definitions

[urcu.git] / urcu / compiler.h

diff --git a/urcu/compiler.h b/urcu/compiler.h
index aab2c5cdd7bff1c590896f0add675ba3435fcc3a..ce19c74764de7c82c5c8dbb06e2ddd214027c5f8 100644 (file)
--- a/urcu/compiler.h
+++ b/urcu/compiler.h
@@ -37,7 +37,7 @@
  * use is to mediate communication between process-level code and irq/NMI
  * handlers, all running on the same CPU.
  */
-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&x)
+#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
 
 #ifndef max
 #define max(a,b) ((a)>(b)?(a):(b))
@@ -47,4 +47,12 @@
 #define min(a,b) ((a)<(b)?(a):(b))
 #endif
 
+#if defined(__SIZEOF_LONG__)
+#define BITS_PER_LONG  (__SIZEOF_LONG__ * 8)
+#elif defined(_LP64)
+#define BITS_PER_LONG  64
+#else
+#define BITS_PER_LONG  32
+#endif
+
 #endif /* _URCU_COMPILER_H */