+/* Expend the size of the dict */
+static void xbt_dict_rehash(xbt_dict_t dict) {
+ const int oldsize = dict->table_size + 1;
+ register int newsize = oldsize * 2;
+ register int i;
+ register xbt_dictelm_t *currcell;
+ register xbt_dictelm_t *twincell;
+ register xbt_dictelm_t bucklet;
+ register xbt_dictelm_t *pprev;
+
+ currcell = (xbt_dictelm_t*) xbt_realloc((char*)dict->table, newsize * sizeof(xbt_dictelm_t));
+ memset(&currcell[oldsize], 0, oldsize * sizeof(xbt_dictelm_t)); /* zero second half */
+ dict->table_size = --newsize;
+ dict->table = currcell;
+ DEBUG2("REHASH (%d->%d)",oldsize,newsize);
+
+ for (i=0; i<oldsize; i++,currcell++) {
+ if (!*currcell) /* empty cell */
+ continue;
+ twincell = currcell+oldsize;
+ for (pprev = currcell, bucklet = *currcell;
+ bucklet;
+ bucklet = *pprev) {
+ /* Since we use "& size" instead of "%size" and since the size was doubled,
+ each bucklet of this cell must either :
+ - stay in cell i (ie, currcell)
+ - go to the cell i+oldsize (ie, twincell) */
+ if ((bucklet->hash_code & newsize) != i) { /* Move to b */
+ *pprev = bucklet->next;
+ bucklet->next = *twincell;
+ if (!*twincell)
+ dict->fill++;
+ *twincell = bucklet;
+ continue;
+ } else {
+ pprev = &bucklet->next;
+ }
+
+ }
+
+ if (!*currcell) /* everything moved */
+ dict->fill--;
+ }
+}
+