Update email address from @polymtl.ca to @efficios.com

[urcu.git] / urcu / compiler.h

diff --git a/urcu/compiler.h b/urcu/compiler.h
index aab2c5cdd7bff1c590896f0add675ba3435fcc3a..fcab5ea591e83e21efa471df038b2500efde3ad8 100644 (file)
--- a/urcu/compiler.h
+++ b/urcu/compiler.h
@@ -6,7 +6,7 @@
  *
  * Compiler definitions.
  *
- * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
  * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
@@ -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 */