Merge branch '2.2' of github.com:antirez/redis into 2.2

00-RELEASENOTES

@@ -12,6 +12,21 @@ for 2.0.
 CHANGELOG
 ---------
 
+What's new in Redis 2.2.4
+=========================
+
+* Return value of OBJECT DEBUG against sorted sets fixed, now is "skiplist".
+
+What's new in Redis 2.2.3
+=========================
+
+* Fixed issue #503. MONITOR + QUIT (and other combinations) could crash
+  the server.
+* OBJECT command implemented. See http://redis.io/commands/object
+* Fixed a problem in redis-cli related to escapes in the form "\x..".
+* Fixed a minor memory leak in redis-cli
+* Saved RDB on SIGTERM on archs where it was not working properly.
+
 What's new in Redis 2.2.2
 =========================
 

src/object.c

@@ -93,10 +93,13 @@ robj *createHashObject(void) {
 
 robj *createZsetObject(void) {
     zset *zs = zmalloc(sizeof(*zs));
+    robj *o;
 
     zs->dict = dictCreate(&zsetDictType,NULL);
     zs->zsl = zslCreate();
-    return createObject(REDIS_ZSET,zs);
+    o = createObject(REDIS_ZSET,zs);
+    o->encoding = REDIS_ENCODING_SKIPLIST;
+    return o;
 }
 
 void freeStringObject(robj *o) {
@@ -425,6 +428,7 @@ char *strEncoding(int encoding) {
     case REDIS_ENCODING_LINKEDLIST: return "linkedlist";
     case REDIS_ENCODING_ZIPLIST: return "ziplist";
     case REDIS_ENCODING_INTSET: return "intset";
+    case REDIS_ENCODING_SKIPLIST: return "skiplist";
     default: return "unknown";
     }
 }
@@ -439,3 +443,42 @@ unsigned long estimateObjectIdleTime(robj *o) {
                     REDIS_LRU_CLOCK_RESOLUTION;
     }
 }
+
+/* This is an helper function for the DEBUG command. We need to lookup keys
+ * without any modification of LRU or other parameters. */
+robj *objectCommandLookup(redisClient *c, robj *key) {
+    dictEntry *de;
+
+    if ((de = dictFind(c->db->dict,key->ptr)) == NULL) return NULL;
+    return (robj*) dictGetEntryVal(de);
+}
+
+robj *objectCommandLookupOrReply(redisClient *c, robj *key, robj *reply) {
+    robj *o = objectCommandLookup(c,key);
+
+    if (!o) addReply(c, reply);
+    return o;
+}
+
+/* Object command allows to inspect the internals of an Redis Object.
+ * Usage: OBJECT <verb> ... arguments ... */
+void objectCommand(redisClient *c) {
+    robj *o;
+
+    if (!strcasecmp(c->argv[1]->ptr,"refcount") && c->argc == 3) {
+        if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
+                == NULL) return;
+        addReplyLongLong(c,o->refcount);
+    } else if (!strcasecmp(c->argv[1]->ptr,"encoding") && c->argc == 3) {
+        if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
+                == NULL) return;
+        addReplyBulkCString(c,strEncoding(o->encoding));
+    } else if (!strcasecmp(c->argv[1]->ptr,"idletime") && c->argc == 3) {
+        if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nullbulk))
+                == NULL) return;
+        addReplyLongLong(c,estimateObjectIdleTime(o));
+    } else {
+        addReplyError(c,"Syntax error. Try OBJECT (refcount|encoding|idletime)");
+    }
+}
+

src/redis.c

@@ -187,7 +187,8 @@ struct redisCommand readonlyCommandTable[] = {
     {"punsubscribe",punsubscribeCommand,-1,0,NULL,0,0,0},
     {"publish",publishCommand,3,REDIS_CMD_FORCE_REPLICATION,NULL,0,0,0},
     {"watch",watchCommand,-2,0,NULL,0,0,0},
-    {"unwatch",unwatchCommand,1,0,NULL,0,0,0}
+    {"unwatch",unwatchCommand,1,0,NULL,0,0,0},
+    {"object",objectCommand,-2,0,NULL,0,0,0}
 };
 
 /*============================ Utility functions ============================ */

src/redis.h

@@ -81,6 +81,7 @@
 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
+#define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
 
 /* Object types only used for dumping to disk */
 #define REDIS_EXPIRETIME 253
@@ -1008,6 +1009,7 @@ void punsubscribeCommand(redisClient *c);
 void publishCommand(redisClient *c);
 void watchCommand(redisClient *c);
 void unwatchCommand(redisClient *c);
+void objectCommand(redisClient *c);
 
 #if defined(__GNUC__)
 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));

src/version.h

@@ -1 +1 @@
-#define REDIS_VERSION "2.2.2"
+#define REDIS_VERSION "2.2.4"