Remove hashset

diff --git a/gmqcc.h b/gmqcc.h
index 747aef4862ad7069d3a3500e6415661e457dac6a..32028c11c7643e6f6ac087ad12e1aa6aa9cef54d 100644 (file)
--- a/gmqcc.h
+++ b/gmqcc.h
@@ -380,14 +380,6 @@ typedef struct hash_table_t {
     struct hash_node_t **table;
 } hash_table_t, *ht;
 
-typedef struct hash_set_t {
-    size_t  bits;
-    size_t  mask;
-    size_t  capacity;
-    size_t *items;
-    size_t  total;
-} hash_set_t, *hs;
-
 /*
  * hashtable implementation:
  *
@@ -429,44 +421,6 @@ void          util_htrm  (hash_table_t *ht, const char *key, void (*cb)(void*));
 
 void         *util_htget (hash_table_t *ht, const char *key);
 void         *util_htgeth(hash_table_t *ht, const char *key, size_t hash);
-
-/*
- * hashset implementation:
- *      This was designed for pointers:  you manage the life of the object yourself
- *      if you do use this for non-pointers please be warned that the object may not
- *      be valid if the duration of it exceeds (i.e on stack).  So you need to allocate
- *      yourself, or put those in global scope to ensure duration is for the whole
- *      runtime.
- *
- * util_hsnew()                             -- to make a new hashset
- * util_hsadd(set, key)                     -- to add something in the set
- * util_hshas(set, key)                     -- to check if something is in the set
- * util_hsrem(set, key)                     -- to remove something in the set
- * util_hsdel(set)                          -- to delete the set
- *
- * example of use:
- * 
- * hs    foo = util_hsnew();
- * char *bar = "hello blub\n";
- * char *baz = "hello dale\n";
- *
- * util_hsadd(foo, bar);
- * util_hsadd(foo, baz);
- * util_hsrem(foo, baz);
- *
- * printf("bar %d | baz %d\n",
- *     util_hshas(foo, bar),
- *     util_hshad(foo, baz)
- * );
- *
- * util_hsdel(foo);  
- */
-
-hash_set_t *util_hsnew(void);
-int         util_hsadd(hash_set_t *, void *);
-int         util_hshas(hash_set_t *, void *);
-int         util_hsrem(hash_set_t *, void *);
-void        util_hsdel(hash_set_t *);
  
 /*===================================================================*/
 /*============================ file.c ===============================*/

diff --git a/util.c b/util.c
index 3740429f369803c66b9d1d112b882c2dc74c0518..73c5335e08e49a3d87929a75351bdfd5d3315ad5 100644 (file)
--- a/util.c
+++ b/util.c
@@ -670,146 +670,6 @@ void util_htdel(hash_table_t *ht) {
     util_htrem(ht, NULL);
 }
 
-/*
- * A basic implementation of a hash-set.  Unlike a hashtable, a hash
- * set doesn't maintain key-value pairs.  It simply maintains a key
- * that can be set, removed, and checked for.
- *
- * See EXPOSED interface comment below 
- */
-#define GMQCC_HASHSET_PRIME0 0x0049
-#define GMQCC_HASHSET_PRIME1 0x1391
-
-static int util_hsput(hash_set_t *set, void *item) {
-    size_t hash = (size_t)item; /* shouldn't drop the bits */
-    size_t iter;
-
-    /* a == 0 || a == 1 */
-    if (hash >> 1)
-        return -1;
-
-    iter = set->mask & (GMQCC_HASHSET_PRIME0 * hash);
-
-    /* while (set->items[iter] != 0 && set->items[iter] != 1) */
-    while  (!(set->items[iter] >> 1)) {
-        if (set->items[iter] == hash)
-            return 0;
-
-        iter = set->mask & (iter + GMQCC_HASHSET_PRIME1);
-    }
-
-    set->total ++;
-    set->items[iter] = hash;
-
-    return 1;
-}
-
-static void util_hsupdate(hash_set_t *set) {
-    size_t *old;
-    size_t  end;
-    size_t  itr;
-
-    /* time to rehash? */
-    if ((float)set->total >= (size_t)((double)set->capacity * 0.85)) {
-        old = set->items;
-        end = set->capacity;
-
-        set->bits ++;
-        set->capacity = (size_t)(1 << set->bits);
-        set->mask     = set->capacity - 1;
-        set->items    = (size_t*)mem_a(set->capacity * sizeof(size_t));
-        set->total    = 0;
-
-        /*assert(set->items);*/
-
-        /*
-         * this shouldn't be slow?  if so unroll it a little perhaps
-         * (shouldn't be though)
-         */
-        for (itr = 0; itr < end; itr++)
-            util_hsput(set, (void*)old[itr]);
-
-        mem_d(old);
-    }
-}
-
-/*
- * EXPOSED interface: all of these functions are exposed to the outside
- * for use. The stuff above is static because it's the "internal" mechanics
- * for syncronizing the set for updating, and putting data into the set.
- */   
-int util_hsadd(hash_set_t *set, void *item) {
-    int run = util_hsput(set, item); /* inlined */
-    util_hsupdate(set);
-
-    return run;
-}
-
-/* remove item in set */
-int util_hsrem(hash_set_t *set, void *item) {
-    size_t hash = (size_t)item;
-    size_t iter = set->mask & (GMQCC_HASHSET_PRIME0 * hash);
-
-    while  (set->items[iter]) {
-        if (set->items[iter] == hash) {
-            set->items[iter] =  1;
-            set->total       --;
-
-            return 1;
-        }
-        iter = set->mask & (iter + GMQCC_HASHSET_PRIME1);
-    }
-
-    return 0;
-}
-
-/* check if item is set */
-int util_hshas(hash_set_t *set, void *item) {
-    size_t hash = (size_t)item;
-    size_t iter = set->mask & (GMQCC_HASHSET_PRIME0 * hash);
-
-    while  (set->items[iter]) {
-        if (set->items[iter] == hash)
-            return 1;
-
-        iter = set->mask & (iter + GMQCC_HASHSET_PRIME1);
-    }
-
-    return 0;
-}
-
-hash_set_t *util_hsnew(void) {
-    hash_set_t *set;
-
-    if (!(set = (hash_set_t*)mem_a(sizeof(hash_set_t))))
-        return NULL;
-
-    set->bits     = 3;
-    set->total    = 0;
-    set->capacity = (size_t)(1 << set->bits);
-    set->mask     = set->capacity - 1;
-    set->items    = (size_t*)mem_a(set->capacity * sizeof(size_t));
-
-    if (!set->items) {
-        util_hsdel(set);
-        return NULL;
-    }
-
-    return set;
-}
-
-void util_hsdel(hash_set_t *set) {
-    if (!set) return;
-
-    if (set->items)
-        mem_d(set->items);
-
-    mem_d(set);
-}
-#undef GMQCC_HASHSET_PRIME0
-#undef GMQCC_HASHSET_PRIME1
-
-
 /*
  * Portable implementation of vasprintf/asprintf. Assumes vsnprintf
  * exists, otherwise compiler error.