]> git.ozlabs.org Git - ccan/blobdiff - container_of/container_of.h
Move modules to ccan/ tools to tools/
[ccan] / container_of / container_of.h
diff --git a/container_of/container_of.h b/container_of/container_of.h
deleted file mode 100644 (file)
index 1f4b18e..0000000
+++ /dev/null
@@ -1,65 +0,0 @@
-#ifndef CCAN_CONTAINER_OF_H
-#define CCAN_CONTAINER_OF_H
-#include <stddef.h>
-
-#include "config.h"
-#include "check_type/check_type.h"
-
-/**
- * container_of - get pointer to enclosing structure
- * @member_ptr: pointer to the structure member
- * @containing_type: the type this member is within
- * @member: the name of this member within the structure.
- *
- * Given a pointer to a member of a structure, this macro does pointer
- * subtraction to return the pointer to the enclosing type.
- *
- * Example:
- *     struct info
- *     {
- *             int some_other_field;
- *             struct foo my_foo;
- *     };
- *
- *     struct info *foo_to_info(struct foo *foop)
- *     {
- *             return container_of(foo, struct info, my_foo);
- *     }
- */
-#define container_of(member_ptr, containing_type, member)              \
-        ((containing_type *)                                           \
-         ((char *)(member_ptr) - offsetof(containing_type, member))    \
-         - check_types_match(*(member_ptr), ((containing_type *)0)->member))
-
-
-/**
- * container_of_var - get pointer to enclosing structure using a variable
- * @member_ptr: pointer to the structure member
- * @var: a pointer to a structure of same type as this member is within
- * @member: the name of this member within the structure.
- *
- * Given a pointer to a member of a structure, this macro does pointer
- * subtraction to return the pointer to the enclosing type.
- *
- * Example:
- *     struct info
- *     {
- *             int some_other_field;
- *             struct foo my_foo;
- *     };
- *
- *     struct info *foo_to_info(struct foo *foop)
- *     {
- *             struct info *i = container_of_var(foo, i, my_foo);
- *             return i;
- *     }
- */
-#ifdef HAVE_TYPEOF
-#define container_of_var(member_ptr, var, member) \
-       container_of(member_ptr, typeof(*var), member)
-#else
-#define container_of_var(member_ptr, var, member) \
-       ((void *)((char *)(member_ptr) - offsetof(containing_type, member)))
-#endif
-
-#endif /* CCAN_CONTAINER_OF_H */