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rculfhash: allow shrink
[urcu.git]
/
urcu
/
compiler.h
diff --git
a/urcu/compiler.h
b/urcu/compiler.h
index 489677b3aefe1ad6dd294006d903721f375f66a7..4bced2a9849846a25b8c1fd59a15cd2b03af0060 100644
(file)
--- a/
urcu/compiler.h
+++ b/
urcu/compiler.h
@@
-55,13
+55,28
@@
#define CAA_BITS_PER_LONG 32
#endif
#define CAA_BITS_PER_LONG 32
#endif
-#define caa_container_of(ptr, type, member) \
+/*
+ * caa_container_of - Get the address of an object containing a field.
+ *
+ * @ptr: pointer to the field.
+ * @type: type of the object.
+ * @member: name of the field within the object.
+ */
+#define caa_container_of(ptr, type, member) \
({ \
({ \
- const typeof(((type *)
NULL)->member) * __ptr = (ptr);
\
+ const typeof(((type *)
NULL)->member) * __ptr = (ptr);
\
(type *)((char *)__ptr - offsetof(type, member)); \
})
#define CAA_BUILD_BUG_ON_ZERO(cond) (sizeof(struct { int:-!!(cond); }))
#define CAA_BUILD_BUG_ON(cond) ((void)BUILD_BUG_ON_ZERO(cond))
(type *)((char *)__ptr - offsetof(type, member)); \
})
#define CAA_BUILD_BUG_ON_ZERO(cond) (sizeof(struct { int:-!!(cond); }))
#define CAA_BUILD_BUG_ON(cond) ((void)BUILD_BUG_ON_ZERO(cond))
+/*
+ * __rcu is an annotation that documents RCU pointer accesses that need
+ * to be protected by a read-side critical section. Eventually, a static
+ * checker will be able to use this annotation to detect incorrect RCU
+ * usage.
+ */
+#define __rcu
+
#endif /* _URCU_COMPILER_H */
#endif /* _URCU_COMPILER_H */
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