X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/be90c803e3bb041335ea0b8f40348965846f06b7..af0b220756571bc8faf57a0c7b7389dd86a60376:/src/t_set.c

diff --git a/src/t_set.c b/src/t_set.c
index 33e7bb38..46a0c6ee 100644
--- a/src/t_set.c
+++ b/src/t_set.c
@@ -1,3 +1,32 @@
+/*
+ * Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
 #include "redis.h"
 
 /*-----------------------------------------------------------------------------
@@ -476,19 +505,21 @@ void srandmemberWithCountCommand(redisClient *c) {
         unsigned long added = 0;
 
         while(added < count) {
-            int retval;
-
             encoding = setTypeRandomElement(set,&ele,&llele);
             if (encoding == REDIS_ENCODING_INTSET) {
-                retval = dictAdd(d,createStringObjectFromLongLong(llele),NULL);
+                ele = createStringObjectFromLongLong(llele);
             } else if (ele->encoding == REDIS_ENCODING_RAW) {
-                retval = dictAdd(d,dupStringObject(ele),NULL);
+                ele = dupStringObject(ele);
             } else if (ele->encoding == REDIS_ENCODING_INT) {
-                retval = dictAdd(d,
-                    createStringObjectFromLongLong((long)ele->ptr),NULL);
+                ele = createStringObjectFromLongLong((long)ele->ptr);
             }
-
-            if (retval == DICT_OK) added++;
+            /* Try to add the object to the dictionary. If it already exists
+             * free it, otherwise increment the number of objects we have
+             * in the result dictionary. */
+            if (dictAdd(d,ele,NULL) == DICT_OK)
+                added++;
+            else
+                decrRefCount(ele);
         }
     }