cuoo/hcobj.h: Hash-consed Object Headers
[cuoo: Dynamic Objects and Operations]

Data Structures
struct	cuooP_hcobj
Defines
#define	CUOO_HC_GENERATION 0
#define	CUOO_HCOBJ_NEEDED 1
#define	CUOO_HCOBJ CUOO_OBJ cu_inherit (cuooP_hcobj);
#define	CUOO_HCOBJ_SHIFT sizeof(struct cuooP_hcobj)
#define	CUOO_HCOBJ_INIT CUOO_OBJ_INIT { 0 },
#define	CUOO_HCOBJ_SHIFTW (CUOO_HCOBJ_SHIFT/CU_WORD_SIZE)
#define	CUOO_HCOBJ_KEY(obj) ((void )((char )(obj) + CUOO_HCOBJ_SHIFT))
Typedefs
typedef struct cuooP_hcobj *	cuooP_hcobj_t

Detailed Description

This header defines a macro CUOO_HCOBJ to put right after the opening brace of a hash-consed object struct:

 struct my_obj {
     CUOO_HCOBJ
     // key fields
     // value fields
 };

Note that there is no semicolon after the macro. A macro is used here, because the need for the header depends on the configuration.

#define CUOO_HCOBJ CUOO_OBJ cu_inherit (cuooP_hcobj);

Put this, without semicolon, at the beginning of struct bodies which are used for hash-consed objects.

#define CUOO_HCOBJ_SHIFT sizeof(struct cuooP_hcobj)

The offset of the key-part of hash-consed object struct.