Moved most static strings into the shared structure (#8411)

Moved most static strings into the shared structure 

11 files changed, 61 insertions, 80 deletions

diff --git a/src/acl.c b/src/acl.c
index 1f07c292f..74210ebce 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -2253,7 +2253,7 @@ void authCommand(client *c) {
             return;
         }
 
-        username = createStringObject("default",7);
+        username = shared.default_username; 
         password = c->argv[1];
     } else {
         username = c->argv[1];
@@ -2265,9 +2265,5 @@ void authCommand(client *c) {
     } else {
         addReplyError(c,"-WRONGPASS invalid username-password pair or user is disabled.");
     }
-
-    /* Free the "default" string object we created for the two
-     * arguments form. */
-    if (c->argc == 2) decrRefCount(username);
 }
 
diff --git a/src/aof.c b/src/aof.c
index 6753e8bcc..518b98c84 100644
--- a/src/aof.c
+++ b/src/aof.c
@@ -588,11 +588,10 @@ sds catAppendOnlyExpireAtCommand(sds buf, struct redisCommand *cmd, robj *key, r
     }
     decrRefCount(seconds);
 
-    argv[0] = createStringObject("PEXPIREAT",9);
+    argv[0] = shared.pexpireat;
     argv[1] = key;
     argv[2] = createStringObjectFromLongLong(when);
     buf = catAppendOnlyGenericCommand(buf, 3, argv);
-    decrRefCount(argv[0]);
     decrRefCount(argv[2]);
     return buf;
 }
diff --git a/src/object.c b/src/object.c
index 8573ef0b5..ce2f3dc14 100644
--- a/src/object.c
+++ b/src/object.c
@@ -384,23 +384,6 @@ void decrRefCountVoid(void *o) {
     decrRefCount(o);
 }
 
-/* This function set the ref count to zero without freeing the object.
- * It is useful in order to pass a new object to functions incrementing
- * the ref count of the received object. Example:
- *
- *    functionThatWillIncrementRefCount(resetRefCount(CreateObject(...)));
- *
- * Otherwise you need to resort to the less elegant pattern:
- *
- *    *obj = createObject(...);
- *    functionThatWillIncrementRefCount(obj);
- *    decrRefCount(obj);
- */
-robj *resetRefCount(robj *obj) {
-    obj->refcount = 0;
-    return obj;
-}
-
 int checkType(client *c, robj *o, int type) {
     /* A NULL is considered an empty key */
     if (o && o->type != type) {
diff --git a/src/replication.c b/src/replication.c
index f23fcb6de..90fa6c782 100644
--- a/src/replication.c
+++ b/src/replication.c
@@ -3333,10 +3333,9 @@ void replicationCron(void) {
             checkClientPauseTimeoutAndReturnIfPaused();
 
         if (!manual_failover_in_progress) {
-            ping_argv[0] = createStringObject("PING",4);
+            ping_argv[0] = shared.ping;
             replicationFeedSlaves(server.slaves, server.slaveseldb,
                 ping_argv, 1);
-            decrRefCount(ping_argv[0]);
         }
     }
 
diff --git a/src/scripting.c b/src/scripting.c
index 41469ee2e..e23d49e8b 100644
--- a/src/scripting.c
+++ b/src/scripting.c
@@ -1668,12 +1668,11 @@ void evalGenericCommand(client *c, int evalsha) {
              * or just running a CPU costly read-only script on the slaves. */
             if (server.dirty == initial_server_dirty) {
                 rewriteClientCommandVector(c,3,
-                    resetRefCount(createStringObject("SCRIPT",6)),
-                    resetRefCount(createStringObject("LOAD",4)),
+                    shared.script,
+                    shared.load,
                     script);
             } else {
-                rewriteClientCommandArgument(c,0,
-                    resetRefCount(createStringObject("EVAL",4)));
+                rewriteClientCommandArgument(c,0,shared.eval);
                 rewriteClientCommandArgument(c,1,script);
             }
             forceCommandPropagation(c,PROPAGATE_REPL|PROPAGATE_AOF);
diff --git a/src/server.c b/src/server.c
index faaca7215..bc0eb8255 100644
--- a/src/server.c
+++ b/src/server.c
@@ -2418,13 +2418,10 @@ void beforeSleep(struct aeEventLoop *eventLoop) {
     if (server.get_ack_from_slaves && !checkClientPauseTimeoutAndReturnIfPaused()) {
         robj *argv[3];
 
-        argv[0] = createStringObject("REPLCONF",8);
-        argv[1] = createStringObject("GETACK",6);
-        argv[2] = createStringObject("*",1); /* Not used argument. */
+        argv[0] = shared.replconf;
+        argv[1] = shared.getack;
+        argv[2] = shared.special_asterick; /* Not used argument. */
         replicationFeedSlaves(server.slaves, server.slaveseldb, argv, 3);
-        decrRefCount(argv[0]);
-        decrRefCount(argv[1]);
-        decrRefCount(argv[2]);
         server.get_ack_from_slaves = 0;
     }
 
@@ -2565,6 +2562,8 @@ void createSharedObjects(void) {
     shared.unsubscribebulk = createStringObject("$11\r\nunsubscribe\r\n",18);
     shared.psubscribebulk = createStringObject("$10\r\npsubscribe\r\n",17);
     shared.punsubscribebulk = createStringObject("$12\r\npunsubscribe\r\n",19);
+
+    /* Shared command names */
     shared.del = createStringObject("DEL",3);
     shared.unlink = createStringObject("UNLINK",6);
     shared.rpop = createStringObject("RPOP",4);
@@ -2577,15 +2576,38 @@ void createSharedObjects(void) {
     shared.zpopmax = createStringObject("ZPOPMAX",7);
     shared.multi = createStringObject("MULTI",5);
     shared.exec = createStringObject("EXEC",4);
-    /* Used in the LMOVE/BLMOVE commands */
-    shared.left = createStringObject("left",4);
-    shared.right = createStringObject("right",5);
+    shared.hset = createStringObject("HSET",4);
+    shared.srem = createStringObject("SREM",4);
+    shared.xgroup = createStringObject("XGROUP",6);
+    shared.xclaim = createStringObject("XCLAIM",6);
+    shared.script = createStringObject("SCRIPT",6);
+    shared.replconf = createStringObject("REPLCONF",8);
     shared.pexpireat = createStringObject("PEXPIREAT",9);
     shared.pexpire = createStringObject("PEXPIRE",7);
     shared.persist = createStringObject("PERSIST",7);
     shared.set = createStringObject("SET",3);
+    shared.eval = createStringObject("EVAL",4);
+
+    /* Shared command argument */
+    shared.left = createStringObject("left",4);
+    shared.right = createStringObject("right",5);
     shared.pxat = createStringObject("PXAT", 4);
     shared.px = createStringObject("PX",2);
+    shared.time = createStringObject("TIME",4);
+    shared.retrycount = createStringObject("RETRYCOUNT",10);
+    shared.force = createStringObject("FORCE",5);
+    shared.justid = createStringObject("JUSTID",6);
+    shared.lastid = createStringObject("LASTID",6);
+    shared.default_username = createStringObject("default",7);
+    shared.ping = createStringObject("ping",7);
+    shared.setid = createStringObject("SETID",5);
+    shared.keepttl = createStringObject("KEEPTTL",7);
+    shared.load = createStringObject("LOAD",4);
+    shared.createconsumer = createStringObject("CREATECONSUMER",14);
+    shared.getack = createStringObject("GETACK",6);
+    shared.special_asterick = createStringObject("*",1);
+    shared.special_equals = createStringObject("=",1);
+
     for (j = 0; j < OBJ_SHARED_INTEGERS; j++) {
         shared.integers[j] =
             makeObjectShared(createObject(OBJ_STRING,(void*)(long)j));
diff --git a/src/server.h b/src/server.h
index b293afcee..7140c4571 100644
--- a/src/server.h
+++ b/src/server.h
@@ -976,8 +976,11 @@ struct sharedObjectsStruct {
     *busykeyerr, *oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk,
     *unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *unlink,
     *rpop, *lpop, *lpush, *rpoplpush, *lmove, *blmove, *zpopmin, *zpopmax,
-    *emptyscan, *multi, *exec, *left, *right, *persist, *set, *pexpireat,
-    *pexpire, *pxat, *px,
+    *emptyscan, *multi, *exec, *left, *right, *hset, *srem, *xgroup, *xclaim,  
+    *script, *replconf, *eval, *persist, *set, *pexpireat, *pexpire, 
+    *time, *pxat, *px, *retrycount, *force, *justid, 
+    *lastid, *ping, *setid, *keepttl, *load, *createconsumer,
+    *getack, *special_asterick, *special_equals, *default_username,
     *select[PROTO_SHARED_SELECT_CMDS],
     *integers[OBJ_SHARED_INTEGERS],
     *mbulkhdr[OBJ_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
diff --git a/src/t_hash.c b/src/t_hash.c
index 082e0f129..cae350566 100644
--- a/src/t_hash.c
+++ b/src/t_hash.c
@@ -759,11 +759,9 @@ void hincrbyfloatCommand(client *c) {
     /* Always replicate HINCRBYFLOAT as an HSET command with the final value
      * in order to make sure that differences in float precision or formatting
      * will not create differences in replicas or after an AOF restart. */
-    robj *aux, *newobj;
-    aux = createStringObject("HSET",4);
+    robj *newobj;
     newobj = createRawStringObject(buf,len);
-    rewriteClientCommandArgument(c,0,aux);
-    decrRefCount(aux);
+    rewriteClientCommandArgument(c,0,shared.hset);
     rewriteClientCommandArgument(c,3,newobj);
     decrRefCount(newobj);
 }
diff --git a/src/t_set.c b/src/t_set.c
index de0a9f954..f7a05206d 100644
--- a/src/t_set.c
+++ b/src/t_set.c
@@ -499,7 +499,7 @@ void spopWithCountCommand(client *c) {
      * Prepare our replication argument vector. Also send the array length
      * which is common to both the code paths. */
     robj *propargv[3];
-    propargv[0] = createStringObject("SREM",4);
+    propargv[0] = shared.srem;
     propargv[1] = c->argv[1];
     addReplySetLen(c,count);
 
@@ -590,13 +590,12 @@ void spopWithCountCommand(client *c) {
      * dirty counter. We don't want to propagate an SPOP command since
      * we propagated the command as a set of SREMs operations using
      * the alsoPropagate() API. */
-    decrRefCount(propargv[0]);
     preventCommandPropagation(c);
     signalModifiedKey(c,c->db,c->argv[1]);
 }
 
 void spopCommand(client *c) {
-    robj *set, *ele, *aux;
+    robj *set, *ele;
     sds sdsele;
     int64_t llele;
     int encoding;
@@ -629,9 +628,7 @@ void spopCommand(client *c) {
     notifyKeyspaceEvent(NOTIFY_SET,"spop",c->argv[1],c->db->id);
 
     /* Replicate/AOF this command as an SREM operation */
-    aux = createStringObject("SREM",4);
-    rewriteClientCommandVector(c,3,aux,c->argv[1],ele);
-    decrRefCount(aux);
+    rewriteClientCommandVector(c,3,shared.srem,c->argv[1],ele);
 
     /* Add the element to the reply */
     addReplyBulk(c,ele);
diff --git a/src/t_stream.c b/src/t_stream.c
index 32bfa1f7d..7b4ffe3c4 100644
--- a/src/t_stream.c
+++ b/src/t_stream.c
@@ -1328,19 +1328,19 @@ void streamPropagateXCLAIM(client *c, robj *key, streamCG *group, robj *groupnam
      * Note that JUSTID is useful in order to avoid that XCLAIM will do
      * useless work in the slave side, trying to fetch the stream item. */
     robj *argv[14];
-    argv[0] = createStringObject("XCLAIM",6);
+    argv[0] = shared.xclaim;
     argv[1] = key;
     argv[2] = groupname;
     argv[3] = createStringObject(nack->consumer->name,sdslen(nack->consumer->name));
-    argv[4] = createStringObjectFromLongLong(0);
+    argv[4] = shared.integers[0];
     argv[5] = id;
-    argv[6] = createStringObject("TIME",4);
+    argv[6] = shared.time;
     argv[7] = createStringObjectFromLongLong(nack->delivery_time);
-    argv[8] = createStringObject("RETRYCOUNT",10);
+    argv[8] = shared.retrycount;
     argv[9] = createStringObjectFromLongLong(nack->delivery_count);
-    argv[10] = createStringObject("FORCE",5);
-    argv[11] = createStringObject("JUSTID",6);
-    argv[12] = createStringObject("LASTID",6);
+    argv[10] = shared.force;
+    argv[11] = shared.justid;
+    argv[12] = shared.lastid;
     argv[13] = createObjectFromStreamID(&group->last_id);
 
     /* We use progagate() because this code path is not always called from
@@ -1348,16 +1348,9 @@ void streamPropagateXCLAIM(client *c, robj *key, streamCG *group, robj *groupnam
      * consumer group state, and we don't need MULTI/EXEC wrapping because
      * there is no message state cross-message atomicity required. */
     propagate(server.xclaimCommand,c->db->id,argv,14,PROPAGATE_AOF|PROPAGATE_REPL);
-    decrRefCount(argv[0]);
     decrRefCount(argv[3]);
-    decrRefCount(argv[4]);
-    decrRefCount(argv[6]);
     decrRefCount(argv[7]);
-    decrRefCount(argv[8]);
     decrRefCount(argv[9]);
-    decrRefCount(argv[10]);
-    decrRefCount(argv[11]);
-    decrRefCount(argv[12]);
     decrRefCount(argv[13]);
 }
 
@@ -1369,8 +1362,8 @@ void streamPropagateXCLAIM(client *c, robj *key, streamCG *group, robj *groupnam
  */
 void streamPropagateGroupID(client *c, robj *key, streamCG *group, robj *groupname) {
     robj *argv[5];
-    argv[0] = createStringObject("XGROUP",6);
-    argv[1] = createStringObject("SETID",5);
+    argv[0] = shared.xgroup;
+    argv[1] = shared.setid;
     argv[2] = key;
     argv[3] = groupname;
     argv[4] = createObjectFromStreamID(&group->last_id);
@@ -1380,8 +1373,6 @@ void streamPropagateGroupID(client *c, robj *key, streamCG *group, robj *groupna
      * consumer group state, and we don't need MULTI/EXEC wrapping because
      * there is no message state cross-message atomicity required. */
     propagate(server.xgroupCommand,c->db->id,argv,5,PROPAGATE_AOF|PROPAGATE_REPL);
-    decrRefCount(argv[0]);
-    decrRefCount(argv[1]);
     decrRefCount(argv[4]);
 }
 
@@ -1393,8 +1384,8 @@ void streamPropagateGroupID(client *c, robj *key, streamCG *group, robj *groupna
  */
 void streamPropagateConsumerCreation(client *c, robj *key, robj *groupname, sds consumername) {
     robj *argv[5];
-    argv[0] = createStringObject("XGROUP",6);
-    argv[1] = createStringObject("CREATECONSUMER",14);
+    argv[0] = shared.xgroup;
+    argv[1] = shared.createconsumer;
     argv[2] = key;
     argv[3] = groupname;
     argv[4] = createObject(OBJ_STRING,sdsdup(consumername));
@@ -1404,8 +1395,6 @@ void streamPropagateConsumerCreation(client *c, robj *key, robj *groupname, sds
      * consumer group state, and we don't need MULTI/EXEC wrapping because
      * there is no message state cross-message atomicity required. */
     propagate(server.xgroupCommand,c->db->id,argv,5,PROPAGATE_AOF|PROPAGATE_REPL);
-    decrRefCount(argv[0]);
-    decrRefCount(argv[1]);
     decrRefCount(argv[4]);
 }
 
@@ -1725,9 +1714,7 @@ int streamParseIntervalIDOrReply(client *c, robj *o, streamID *id, int *exclude,
 }
 
 void streamRewriteApproxSpecifier(client *c, int idx) {
-    robj *equal_obj = createStringObject("=",1);
-    rewriteClientCommandArgument(c,idx,equal_obj);
-    decrRefCount(equal_obj);
+    rewriteClientCommandArgument(c,idx,shared.special_equals);
 }
 
 /* We propagate MAXLEN/MINID ~ <count> as MAXLEN/MINID = <resulting-len-of-stream>
diff --git a/src/t_string.c b/src/t_string.c
index d05366b7c..6a3b256b8 100644
--- a/src/t_string.c
+++ b/src/t_string.c
@@ -631,7 +631,7 @@ void decrbyCommand(client *c) {
 
 void incrbyfloatCommand(client *c) {
     long double incr, value;
-    robj *o, *new, *aux;
+    robj *o, *new;
 
     o = lookupKeyWrite(c->db,c->argv[1]);
     if (checkType(c,o,OBJ_STRING)) return;
@@ -659,9 +659,7 @@ void incrbyfloatCommand(client *c) {
      * will not create differences in replicas or after an AOF restart. */
     rewriteClientCommandArgument(c,0,shared.set);
     rewriteClientCommandArgument(c,2,new);
-    aux = createStringObject("KEEPTTL",7);
-    rewriteClientCommandArgument(c,3,aux);
-    decrRefCount(aux);
+    rewriteClientCommandArgument(c,3,shared.keepttl);
 }
 
 void appendCommand(client *c) {