use a vtable approach for generic map interface

[nbds] / map / mlocal.h

diff --git a/map/mlocal.h b/map/mlocal.h
index 548a49fdaa05ac918be10397ba1eb132f4babb31..9336ab7ae2e6213385820500c24fd61ca529a339 100644 (file)
--- a/map/mlocal.h
+++ b/map/mlocal.h
@@ -1,12 +1,36 @@
-#ifndef STRUCT_H
-#define STRUCT_H
+#ifndef MLOCAL_H
+#define MLOCAL_H
 
 #define CAS_EXPECT_DOES_NOT_EXIST ( 0)
 #define CAS_EXPECT_EXISTS         (-1)
 #define CAS_EXPECT_WHATEVER       (-2)
 
+typedef void *   (*map_alloc_t)  (void);
+typedef uint64_t (*map_cas_t)    (void *, const void *, uint32_t, uint64_t, uint64_t);
+typedef uint64_t (*map_get_t)    (void *, const void *, uint32_t);
+typedef uint64_t (*map_remove_t) (void *, const void *, uint32_t);
+typedef uint64_t (*map_count_t)  (void *);
+typedef void     (*map_print_t)  (void *);
+typedef void     (*map_free_t)   (void *);
+
+typedef struct map_impl {
+    map_alloc_t  alloc;
+    map_cas_t    cas;
+    map_get_t    get;
+    map_remove_t remove;
+    map_count_t  count;
+    map_print_t  print;
+    map_free_t   free_;
+} map_impl_t;
+
 typedef struct ht hashtable_t;
-hashtable_t *ht_alloc (void);
+typedef struct sl skiplist_t;
+typedef struct ll list_t;
+
+hashtable_t * ht_alloc (void);
+skiplist_t *  sl_alloc (void);
+list_t *      ll_alloc (void);
+
 uint64_t ht_cas    (hashtable_t *ht, const char *key, uint32_t key_len, uint64_t expected_val, uint64_t val);
 uint64_t ht_get    (hashtable_t *ht, const char *key, uint32_t len);
 uint64_t ht_remove (hashtable_t *ht, const char *key, uint32_t len);
@@ -14,21 +38,18 @@ uint64_t ht_count  (hashtable_t *ht);
 void     ht_print  (hashtable_t *ht);
 void     ht_free   (hashtable_t *ht);
 
-typedef struct ll list_t;
-list_t * ll_alloc  (void);
-uint64_t ll_lookup (list_t *ll, const void *key_data, uint32_t key_len);
-uint64_t ll_cas    (list_t *ll, const void *key_data, uint32_t key_len, uint64_t expected_val, uint64_t new_val);
-uint64_t ll_remove (list_t *ll, const void *key_data, uint32_t key_len);
-void     ll_print  (list_t *ll);
-void     ll_free   (list_t *ll);
-
-typedef struct sl skiplist_t;
-skiplist_t * sl_alloc (void);
-uint64_t sl_lookup (skiplist_t *sl, const void *key_data, uint32_t key_len);
 uint64_t sl_cas    (skiplist_t *sl, const void *key_data, uint32_t key_len, uint64_t expected_val, uint64_t new_val);
+uint64_t sl_lookup (skiplist_t *sl, const void *key_data, uint32_t key_len);
 uint64_t sl_remove (skiplist_t *sl, const void *key_data, uint32_t key_len);
+uint64_t sl_count  (skiplist_t *sl);
 void     sl_print  (skiplist_t *sl);
-void     sl_free   (list_t *sl);
+void     sl_free   (skiplist_t *sl);
 
+uint64_t ll_cas    (list_t *ll, const void *key_data, uint32_t key_len, uint64_t expected_val, uint64_t new_val);
+uint64_t ll_lookup (list_t *ll, const void *key_data, uint32_t key_len);
+uint64_t ll_remove (list_t *ll, const void *key_data, uint32_t key_len);
+uint64_t ll_count  (list_t *ll);
+void     ll_print  (list_t *ll);
+void     ll_free   (list_t *ll);
 
-#endif//STRUCT_H
+#endif//MLOCAL_H