dict: add reset function which empties the dict

Change-Id: I267c81a129197534fb318671eafb76e144a15c8c
BUG: 2458
Reviewed-on: http://review.gluster.com/402
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>

2 files changed, 25 insertions, 0 deletions

diff --git a/libglusterfs/src/dict.c b/libglusterfs/src/dict.c
index 5a07ba6b7..35a6c94f0 100644
--- a/libglusterfs/src/dict.c
+++ b/libglusterfs/src/dict.c
@@ -1230,6 +1230,15 @@ _copy (dict_t *unused,
         dict_set ((dict_t *)newdict, key, (value));
 }
 
+static void
+_remove (dict_t *dict,
+         char *key,
+         data_t *value,
+         void *unused)
+{
+        dict_del ((dict_t *)dict, key);
+}
+
 
 dict_t *
 dict_copy (dict_t *dict,
@@ -1248,6 +1257,20 @@ dict_copy (dict_t *dict,
         return new;
 }
 
+int
+dict_reset (dict_t *dict)
+{
+        int32_t         ret = -1;
+        if (!dict) {
+                gf_log_callingfn ("dict", GF_LOG_WARNING, "dict is NULL");
+                goto out;
+        }
+        dict_foreach (dict, _remove, NULL);
+        ret = 0;
+out:
+        return ret;
+}
+
 dict_t *
 dict_copy_with_ref (dict_t *dict,
                     dict_t *new)
diff --git a/libglusterfs/src/dict.h b/libglusterfs/src/dict.h
index e56c1b9a8..462397885 100644
--- a/libglusterfs/src/dict.h
+++ b/libglusterfs/src/dict.h
@@ -146,6 +146,8 @@ dict_t *dict_copy (dict_t *this, dict_t *new);
 GF_MUST_CHECK dict_t *dict_new (void);
 dict_t *dict_copy_with_ref (dict_t *this, dict_t *new);
 
+GF_MUST_CHECK int dict_reset (dict_t *dict);
+
 GF_MUST_CHECK int dict_get_int8 (dict_t *this, char *key, int8_t *val);
 GF_MUST_CHECK int dict_set_int8 (dict_t *this, char *key, int8_t val);