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RCU lock-free stack: don't hold read lock across retry
[urcu.git]
/
urcu
/
compiler.h
diff --git
a/urcu/compiler.h
b/urcu/compiler.h
index fcab5ea591e83e21efa471df038b2500efde3ad8..fb8b8293ca132f683f9639c3a2502e934d17c326 100644
(file)
--- a/
urcu/compiler.h
+++ b/
urcu/compiler.h
@@
-55,4
+55,10
@@
#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 */
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