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Add lock-free queue comments from Paul's review
[urcu.git]
/
urcu
/
compiler.h
diff --git
a/urcu/compiler.h
b/urcu/compiler.h
index ce19c74764de7c82c5c8dbb06e2ddd214027c5f8..fb8b8293ca132f683f9639c3a2502e934d17c326 100644
(file)
--- a/
urcu/compiler.h
+++ b/
urcu/compiler.h
@@
-6,7
+6,7
@@
*
* Compiler definitions.
*
*
* 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.
*
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
@@
-55,4
+55,10
@@
#define BITS_PER_LONG 32
#endif
#define BITS_PER_LONG 32
#endif
+#define container_of(ptr, type, member) \
+ ({ \
+ const typeof(((type *)NULL)->member) * __ptr = (ptr); \
+ (type *)((char *)__ptr - offsetof(type, member)); \
+ })
+
#endif /* _URCU_COMPILER_H */
#endif /* _URCU_COMPILER_H */
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