index 23cd8565d92c0f18ad04d5764750891192bee981..19d6cc33799c68eeefa3a7e72f322fdf2522201c 100644 (file)
int (*init)(sdb_object_t *, va_list);
void (*destroy)(sdb_object_t *);
- sdb_object_t *(*clone)(const sdb_object_t *);
};
-#define SDB_TYPE_INIT { 0, NULL, NULL, NULL }
+#define SDB_TYPE_INIT { 0, NULL, NULL }
struct sdb_object {
sdb_type_t type;
#define SDB_OBJECT_INIT { SDB_TYPE_INIT, 1, NULL }
#define SDB_OBJECT_TYPED_INIT(t) { (t), 1, NULL }
+#define SDB_OBJECT_STATIC(name) { \
+ /* type */ { sizeof(sdb_object_t), NULL, NULL }, \
+ /* ref-cnt */ 1, (name) }
+
typedef struct {
sdb_object_t super;
void *data;
#define SDB_OBJ_WRAPPER(obj) ((sdb_object_wrapper_t *)(obj))
#define SDB_CONST_OBJ_WRAPPER(obj) ((const sdb_object_wrapper_t *)(obj))
+/*
+ * Callback types for comparing objects or performing object lookup.
+ * Any function of type sdb_object_cmp_cb shall return a negative value, zero,
+ * or a positive value if the first object compares less than, equal to, or
+ * greater than the second object respectively.
+ * Any function of type sdb_object_lookup_cb shall return zero for all
+ * matching objects.
+ */
+typedef int (*sdb_object_cmp_cb)(const sdb_object_t *, const sdb_object_t *);
+typedef int (*sdb_object_lookup_cb)(const sdb_object_t *, const void *user_data);
+
/*
* sdb_object_create:
* Allocates a new sdb_object_t of the specified 'name' and 'type'. The object
*
* The init function will be called with the remaining arguments passed to
* sdb_object_create. If the init function fails (returns a non-zero value),
- * the object will be destructed and destroyed.
+ * the object will be destructed and destroyed. In this case, the 'destroy'
+ * callback may be called on objects that were only half-way initialized. The
+ * callback has to handle that case correctly.
*
* The reference count of the new object will be 1.
*
sdb_object_t *
sdb_object_vcreate(const char *name, sdb_type_t type, va_list ap);
+/*
+ * sdb_object_create_simple:
+ * Create a "simple" object without custom initialization and optional
+ * destructor. See the description of sdb_object_create for more details.
+ */
+sdb_object_t *
+sdb_object_create_simple(const char *name, size_t size,
+ void (*destructor)(sdb_object_t *));
+
+/*
+ * sdb_object_create_T:
+ * Create a simple object of type 't'.
+ */
+#define sdb_object_create_T(n,t) \
+ sdb_object_create_simple((n), sizeof(t), NULL)
+
+/*
+ * sdb_object_create_dT:
+ * Create a simple object of dynamic type 't' using destructor 'd'.
+ */
+#define sdb_object_create_dT(n,t,d) \
+ sdb_object_create_simple((n), sizeof(t), d)
+
/*
* sdb_object_create_wrapper:
* Create a new sdb_object_t wrapping some arbitrary other object.
sdb_object_create_wrapper(const char *name,
void *data, void (*destructor)(void *));
-#define SDB_OBJECT_WRAPPER_STATIC(obj, destructor) \
- { SDB_OBJECT_INIT, (obj), (destructor) }
+#define SDB_OBJECT_WRAPPER_STATIC(obj) \
+ { SDB_OBJECT_INIT, (obj), /* destructor */ NULL }
/*
* sdb_object_deref:
void
sdb_object_ref(sdb_object_t *obj);
-/*
- * sdb_object_clone:
- * Clone an existing object using its type's 'clone' callback. The callback is
- * responsible for correctly initializing a new object (which may be done
- * using the object create function or the object's type's init function).
- *
- * Returns:
- * - the cloned object on success
- * - NULL on error or if no clone callback is available
- */
-sdb_object_t *
-sdb_object_clone(const sdb_object_t *obj);
-
/*
* sdb_object_cmp_by_name:
* Compare two objects by their name ignoring the case of the characters.