ZRANGE WITHSCORES test added

[redis.git] / redis.c

diff --git a/redis.c b/redis.c
index dff33754fb4109d4267a4a2412d736815550a62c..07287605c756b1a5c30e71c74f25b459b87dabd2 100644 (file)
--- a/redis.c
+++ b/redis.c
@@ -27,7 +27,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
  * POSSIBILITY OF SUCH DAMAGE.
  */
 

-#define REDIS_VERSION "1.07"
+#define REDIS_VERSION "1.1.94"

 
 #include "fmacros.h"
 #include "config.h"
 
 #include "fmacros.h"
 #include "config.h"


@@ -198,6 +198,10 @@
 #define APPENDFSYNC_ALWAYS 1
 #define APPENDFSYNC_EVERYSEC 2
 
 #define APPENDFSYNC_ALWAYS 1
 #define APPENDFSYNC_EVERYSEC 2
 

+/* We can print the stacktrace, so our assert is defined this way: */
+#define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e),exit(1)))
+static void _redisAssert(char *estr);
+

 /*================================= Data types ============================== */
 
 /* A redis object, that is a type able to hold a string / list / set */
 /*================================= Data types ============================== */
 
 /* A redis object, that is a type able to hold a string / list / set */


@@ -209,6 +213,17 @@ typedef struct redisObject {
     int refcount;
 } robj;
 
     int refcount;
 } robj;
 

+/* Macro used to initalize a Redis object allocated on the stack.
+ * Note that this macro is taken near the structure definition to make sure
+ * we'll update it when the structure is changed, to avoid bugs like
+ * bug #85 introduced exactly in this way. */
+#define initStaticStringObject(_var,_ptr) do { \
+    _var.refcount = 1; \
+    _var.type = REDIS_STRING; \
+    _var.encoding = REDIS_ENCODING_RAW; \
+    _var.ptr = _ptr; \
+} while(0);
+

 typedef struct redisDb {
     dict *dict;
     dict *expires;
 typedef struct redisDb {
     dict *dict;
     dict *expires;


@@ -286,6 +301,7 @@ struct redisServer {
     char *appendfilename;
     char *requirepass;
     int shareobjects;
     char *appendfilename;
     char *requirepass;
     int shareobjects;

+    int rdbcompression;

     /* Replication related */
     int isslave;
     char *masterauth;
     /* Replication related */
     int isslave;
     char *masterauth;


@@ -501,7 +517,7 @@ static struct redisCommand cmdTable[] = {
     {"lrange",lrangeCommand,4,REDIS_CMD_INLINE},
     {"ltrim",ltrimCommand,4,REDIS_CMD_INLINE},
     {"lrem",lremCommand,4,REDIS_CMD_BULK},
     {"lrange",lrangeCommand,4,REDIS_CMD_INLINE},
     {"ltrim",ltrimCommand,4,REDIS_CMD_INLINE},
     {"lrem",lremCommand,4,REDIS_CMD_BULK},

-    {"rpoplpush",rpoplpushcommand,3,REDIS_CMD_BULK},
+    {"rpoplpush",rpoplpushcommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},

     {"sadd",saddCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
     {"srem",sremCommand,3,REDIS_CMD_BULK},
     {"smove",smoveCommand,4,REDIS_CMD_BULK},
     {"sadd",saddCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
     {"srem",sremCommand,3,REDIS_CMD_BULK},
     {"smove",smoveCommand,4,REDIS_CMD_BULK},


@@ -520,9 +536,9 @@ static struct redisCommand cmdTable[] = {
     {"zincrby",zincrbyCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
     {"zrem",zremCommand,3,REDIS_CMD_BULK},
     {"zremrangebyscore",zremrangebyscoreCommand,4,REDIS_CMD_INLINE},
     {"zincrby",zincrbyCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
     {"zrem",zremCommand,3,REDIS_CMD_BULK},
     {"zremrangebyscore",zremrangebyscoreCommand,4,REDIS_CMD_INLINE},

-    {"zrange",zrangeCommand,4,REDIS_CMD_INLINE},
-    {"zrangebyscore",zrangebyscoreCommand,4,REDIS_CMD_INLINE},
-    {"zrevrange",zrevrangeCommand,4,REDIS_CMD_INLINE},
+    {"zrange",zrangeCommand,-4,REDIS_CMD_INLINE},
+    {"zrangebyscore",zrangebyscoreCommand,-4,REDIS_CMD_INLINE},
+    {"zrevrange",zrevrangeCommand,-4,REDIS_CMD_INLINE},

     {"zcard",zcardCommand,2,REDIS_CMD_INLINE},
     {"zscore",zscoreCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
     {"incrby",incrbyCommand,3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM},
     {"zcard",zcardCommand,2,REDIS_CMD_INLINE},
     {"zscore",zscoreCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM},
     {"incrby",incrbyCommand,3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM},


@@ -791,7 +807,7 @@ static dictType zsetDictType = {
     NULL,                      /* val dup */
     dictEncObjKeyCompare,      /* key compare */
     dictRedisObjectDestructor, /* key destructor */
     NULL,                      /* val dup */
     dictEncObjKeyCompare,      /* key compare */
     dictRedisObjectDestructor, /* key destructor */

-    dictVanillaFree            /* val destructor */
+    dictVanillaFree            /* val destructor of malloc(sizeof(double)) */

 };
 
 static dictType hashDictType = {
 };
 
 static dictType hashDictType = {


@@ -811,8 +827,7 @@ static dictType hashDictType = {
  * is based on heap allocation for send buffers, so we simply abort.
  * At least the code will be simpler to read... */
 static void oom(const char *msg) {
  * is based on heap allocation for send buffers, so we simply abort.
  * At least the code will be simpler to read... */
 static void oom(const char *msg) {

-    fprintf(stderr, "%s: Out of memory\n",msg);
-    fflush(stderr);
+    redisLog(REDIS_WARNING, "%s: Out of memory\n",msg);

     sleep(1);
     abort();
 }
     sleep(1);
     abort();
 }


@@ -909,7 +924,7 @@ void backgroundRewriteDoneHandler(int statloc) {
             close(fd);
             goto cleanup;
         }
             close(fd);
             goto cleanup;
         }

-        redisLog(REDIS_WARNING,"Parent diff flushed into the new append log file with success");
+        redisLog(REDIS_NOTICE,"Parent diff flushed into the new append log file with success (%lu bytes)",sdslen(server.bgrewritebuf));

         /* Now our work is to rename the temp file into the stable file. And
          * switch the file descriptor used by the server for append only. */
         if (rename(tmpfile,server.appendfilename) == -1) {
         /* Now our work is to rename the temp file into the stable file. And
          * switch the file descriptor used by the server for append only. */
         if (rename(tmpfile,server.appendfilename) == -1) {


@@ -1067,7 +1082,6 @@ static void createSharedObjects(void) {
     shared.nullbulk = createObject(REDIS_STRING,sdsnew("$-1\r\n"));
     shared.nullmultibulk = createObject(REDIS_STRING,sdsnew("*-1\r\n"));
     shared.emptymultibulk = createObject(REDIS_STRING,sdsnew("*0\r\n"));
     shared.nullbulk = createObject(REDIS_STRING,sdsnew("$-1\r\n"));
     shared.nullmultibulk = createObject(REDIS_STRING,sdsnew("*-1\r\n"));
     shared.emptymultibulk = createObject(REDIS_STRING,sdsnew("*0\r\n"));

-    /* no such key */

     shared.pong = createObject(REDIS_STRING,sdsnew("+PONG\r\n"));
     shared.wrongtypeerr = createObject(REDIS_STRING,sdsnew(
         "-ERR Operation against a key holding the wrong kind of value\r\n"));
     shared.pong = createObject(REDIS_STRING,sdsnew("+PONG\r\n"));
     shared.wrongtypeerr = createObject(REDIS_STRING,sdsnew(
         "-ERR Operation against a key holding the wrong kind of value\r\n"));


@@ -1127,6 +1141,7 @@ static void initServerConfig() {
     server.appendfilename = "appendonly.aof";
     server.requirepass = NULL;
     server.shareobjects = 0;
     server.appendfilename = "appendonly.aof";
     server.requirepass = NULL;
     server.shareobjects = 0;

+    server.rdbcompression = 1;

     server.sharingpoolsize = 1024;
     server.maxclients = 0;
     server.maxmemory = 0;
     server.sharingpoolsize = 1024;
     server.maxclients = 0;
     server.maxmemory = 0;


@@ -1327,6 +1342,10 @@ static void loadServerConfig(char *filename) {
             if ((server.shareobjects = yesnotoi(argv[1])) == -1) {
                 err = "argument must be 'yes' or 'no'"; goto loaderr;
             }
             if ((server.shareobjects = yesnotoi(argv[1])) == -1) {
                 err = "argument must be 'yes' or 'no'"; goto loaderr;
             }

+        } else if (!strcasecmp(argv[0],"rdbcompression") && argc == 2) {
+            if ((server.rdbcompression = yesnotoi(argv[1])) == -1) {
+                err = "argument must be 'yes' or 'no'"; goto loaderr;
+            }

         } else if (!strcasecmp(argv[0],"shareobjectspoolsize") && argc == 2) {
             server.sharingpoolsize = atoi(argv[1]);
             if (server.sharingpoolsize < 1) {
         } else if (!strcasecmp(argv[0],"shareobjectspoolsize") && argc == 2) {
             server.sharingpoolsize = atoi(argv[1]);
             if (server.sharingpoolsize < 1) {


@@ -1397,14 +1416,14 @@ static void freeClient(redisClient *c) {
     freeClientArgv(c);
     close(c->fd);
     ln = listSearchKey(server.clients,c);
     freeClientArgv(c);
     close(c->fd);
     ln = listSearchKey(server.clients,c);

-    assert(ln != NULL);
+    redisAssert(ln != NULL);

     listDelNode(server.clients,ln);
     if (c->flags & REDIS_SLAVE) {
         if (c->replstate == REDIS_REPL_SEND_BULK && c->repldbfd != -1)
             close(c->repldbfd);
         list *l = (c->flags & REDIS_MONITOR) ? server.monitors : server.slaves;
         ln = listSearchKey(l,c);
     listDelNode(server.clients,ln);
     if (c->flags & REDIS_SLAVE) {
         if (c->replstate == REDIS_REPL_SEND_BULK && c->repldbfd != -1)
             close(c->repldbfd);
         list *l = (c->flags & REDIS_MONITOR) ? server.monitors : server.slaves;
         ln = listSearchKey(l,c);

-        assert(ln != NULL);
+        redisAssert(ln != NULL);

         listDelNode(l,ln);
     }
     if (c->flags & REDIS_MASTER) {
         listDelNode(l,ln);
     }
     if (c->flags & REDIS_MASTER) {


@@ -1694,12 +1713,17 @@ static int processCommand(redisClient *c) {
     }
     cmd = lookupCommand(c->argv[0]->ptr);
     if (!cmd) {
     }
     cmd = lookupCommand(c->argv[0]->ptr);
     if (!cmd) {

-        addReplySds(c,sdsnew("-ERR unknown command\r\n"));
+        addReplySds(c,
+            sdscatprintf(sdsempty(), "-ERR unknown command '%s'\r\n",
+                (char*)c->argv[0]->ptr));

         resetClient(c);
         return 1;
     } else if ((cmd->arity > 0 && cmd->arity != c->argc) ||
                (c->argc < -cmd->arity)) {
         resetClient(c);
         return 1;
     } else if ((cmd->arity > 0 && cmd->arity != c->argc) ||
                (c->argc < -cmd->arity)) {

-        addReplySds(c,sdsnew("-ERR wrong number of arguments\r\n"));
+        addReplySds(c,
+            sdscatprintf(sdsempty(),
+                "-ERR wrong number of arguments for '%s' command\r\n",
+                cmd->name));

         resetClient(c);
         return 1;
     } else if (server.maxmemory && cmd->flags & REDIS_CMD_DENYOOM && zmalloc_used_memory() > server.maxmemory) {
         resetClient(c);
         return 1;
     } else if (server.maxmemory && cmd->flags & REDIS_CMD_DENYOOM && zmalloc_used_memory() > server.maxmemory) {


@@ -1787,8 +1811,8 @@ static void replicationFeedSlaves(list *slaves, struct redisCommand *cmd, int di
             robj *lenobj;
 
             lenobj = createObject(REDIS_STRING,
             robj *lenobj;
 
             lenobj = createObject(REDIS_STRING,

-                sdscatprintf(sdsempty(),"%d\r\n",
-                    stringObjectLen(argv[j])));
+                sdscatprintf(sdsempty(),"%lu\r\n",
+                    (unsigned long) stringObjectLen(argv[j])));

             lenobj->refcount = 0;
             outv[outc++] = lenobj;
         }
             lenobj->refcount = 0;
             outv[outc++] = lenobj;
         }


@@ -1860,11 +1884,6 @@ again:
             sdsupdatelen(query);
 
             /* Now we can split the query in arguments */
             sdsupdatelen(query);
 
             /* Now we can split the query in arguments */

-            if (sdslen(query) == 0) {
-                /* Ignore empty query */
-                sdsfree(query);
-                return;
-            }

             argv = sdssplitlen(query,sdslen(query)," ",1,&argc);
             sdsfree(query);
 
             argv = sdssplitlen(query,sdslen(query)," ",1,&argc);
             sdsfree(query);
 


@@ -1880,10 +1899,16 @@ again:
                 }
             }
             zfree(argv);
                 }
             }
             zfree(argv);

-            /* Execute the command. If the client is still valid
-             * after processCommand() return and there is something
-             * on the query buffer try to process the next command. */
-            if (c->argc && processCommand(c) && sdslen(c->querybuf)) goto again;
+            if (c->argc) {
+                /* Execute the command. If the client is still valid
+                 * after processCommand() return and there is something
+                 * on the query buffer try to process the next command. */
+                if (processCommand(c) && sdslen(c->querybuf)) goto again;
+            } else {
+                /* Nothing to process, argc == 0. Just process the query
+                 * buffer if it's not empty or return to the caller */
+                if (sdslen(c->querybuf)) goto again;
+            }

             return;
         } else if (sdslen(c->querybuf) >= REDIS_REQUEST_MAX_SIZE) {
             redisLog(REDIS_DEBUG, "Client protocol error");
             return;
         } else if (sdslen(c->querybuf) >= REDIS_REQUEST_MAX_SIZE) {
             redisLog(REDIS_DEBUG, "Client protocol error");


@@ -2004,8 +2029,8 @@ static void addReplyDouble(redisClient *c, double d) {
     char buf[128];
 
     snprintf(buf,sizeof(buf),"%.17g",d);
     char buf[128];
 
     snprintf(buf,sizeof(buf),"%.17g",d);

-    addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n%s\r\n",
-        strlen(buf),buf));
+    addReplySds(c,sdscatprintf(sdsempty(),"$%lu\r\n%s\r\n",
+        (unsigned long) strlen(buf),buf));

 }
 
 static void addReplyBulkLen(redisClient *c, robj *obj) {
 }
 
 static void addReplyBulkLen(redisClient *c, robj *obj) {


@@ -2016,6 +2041,7 @@ static void addReplyBulkLen(redisClient *c, robj *obj) {
     } else {
         long n = (long)obj->ptr;
 
     } else {
         long n = (long)obj->ptr;
 

+        /* Compute how many bytes will take this integer as a radix 10 string */

         len = 1;
         if (n < 0) {
             len++;
         len = 1;
         if (n < 0) {
             len++;


@@ -2025,7 +2051,7 @@ static void addReplyBulkLen(redisClient *c, robj *obj) {
             len++;
         }
     }
             len++;
         }
     }

-    addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",len));
+    addReplySds(c,sdscatprintf(sdsempty(),"$%lu\r\n",(unsigned long)len));

 }
 
 static void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
 }
 
 static void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {


@@ -2155,7 +2181,7 @@ static void decrRefCount(void *obj) {
         case REDIS_SET: freeSetObject(o); break;
         case REDIS_ZSET: freeZsetObject(o); break;
         case REDIS_HASH: freeHashObject(o); break;
         case REDIS_SET: freeSetObject(o); break;
         case REDIS_ZSET: freeZsetObject(o); break;
         case REDIS_HASH: freeHashObject(o); break;

-        default: assert(0 != 0); break;
+        default: redisAssert(0 != 0); break;

         }
         if (listLength(server.objfreelist) > REDIS_OBJFREELIST_MAX ||
             !listAddNodeHead(server.objfreelist,o))
         }
         if (listLength(server.objfreelist) > REDIS_OBJFREELIST_MAX ||
             !listAddNodeHead(server.objfreelist,o))


@@ -2200,7 +2226,7 @@ static robj *tryObjectSharing(robj *o) {
 
     if (o == NULL || server.shareobjects == 0) return o;
 
 
     if (o == NULL || server.shareobjects == 0) return o;
 

-    assert(o->type == REDIS_STRING);
+    redisAssert(o->type == REDIS_STRING);

     de = dictFind(server.sharingpool,o);
     if (de) {
         robj *shared = dictGetEntryKey(de);
     de = dictFind(server.sharingpool,o);
     if (de) {
         robj *shared = dictGetEntryKey(de);


@@ -2218,7 +2244,7 @@ static robj *tryObjectSharing(robj *o) {
         if (dictSize(server.sharingpool) >=
                 server.sharingpoolsize) {
             de = dictGetRandomKey(server.sharingpool);
         if (dictSize(server.sharingpool) >=
                 server.sharingpoolsize) {
             de = dictGetRandomKey(server.sharingpool);

-            assert(de != NULL);
+            redisAssert(de != NULL);

             c = ((unsigned long) dictGetEntryVal(de))-1;
             dictGetEntryVal(de) = (void*) c;
             if (c == 0) {
             c = ((unsigned long) dictGetEntryVal(de))-1;
             dictGetEntryVal(de) = (void*) c;
             if (c == 0) {


@@ -2231,7 +2257,7 @@ static robj *tryObjectSharing(robj *o) {
             int retval;
 
             retval = dictAdd(server.sharingpool,o,(void*)1);
             int retval;
 
             retval = dictAdd(server.sharingpool,o,(void*)1);

-            assert(retval == DICT_OK);
+            redisAssert(retval == DICT_OK);

             incrRefCount(o);
         }
         return o;
             incrRefCount(o);
         }
         return o;


@@ -2274,7 +2300,7 @@ static int tryObjectEncoding(robj *o) {
      if (o->refcount > 1) return REDIS_ERR;
 
     /* Currently we try to encode only strings */
      if (o->refcount > 1) return REDIS_ERR;
 
     /* Currently we try to encode only strings */

-    assert(o->type == REDIS_STRING);
+    redisAssert(o->type == REDIS_STRING);

 
     /* Check if we can represent this string as a long integer */
     if (isStringRepresentableAsLong(s,&value) == REDIS_ERR) return REDIS_ERR;
 
     /* Check if we can represent this string as a long integer */
     if (isStringRepresentableAsLong(s,&value) == REDIS_ERR) return REDIS_ERR;


@@ -2302,7 +2328,7 @@ static robj *getDecodedObject(robj *o) {
         dec = createStringObject(buf,strlen(buf));
         return dec;
     } else {
         dec = createStringObject(buf,strlen(buf));
         return dec;
     } else {

-        assert(1 != 1);
+        redisAssert(1 != 1);

     }
 }
 
     }
 }
 


@@ -2315,7 +2341,7 @@ static robj *getDecodedObject(robj *o) {
  * sdscmp() from sds.c will apply memcmp() so this function ca be considered
  * binary safe. */
 static int compareStringObjects(robj *a, robj *b) {
  * sdscmp() from sds.c will apply memcmp() so this function ca be considered
  * binary safe. */
 static int compareStringObjects(robj *a, robj *b) {

-    assert(a->type == REDIS_STRING && b->type == REDIS_STRING);
+    redisAssert(a->type == REDIS_STRING && b->type == REDIS_STRING);

     char bufa[128], bufb[128], *astr, *bstr;
     int bothsds = 1;
 
     char bufa[128], bufb[128], *astr, *bstr;
     int bothsds = 1;
 


@@ -2338,7 +2364,7 @@ static int compareStringObjects(robj *a, robj *b) {
 }
 
 static size_t stringObjectLen(robj *o) {
 }
 
 static size_t stringObjectLen(robj *o) {

-    assert(o->type == REDIS_STRING);
+    redisAssert(o->type == REDIS_STRING);

     if (o->encoding == REDIS_ENCODING_RAW) {
         return sdslen(o->ptr);
     } else {
     if (o->encoding == REDIS_ENCODING_RAW) {
         return sdslen(o->ptr);
     } else {


@@ -2469,7 +2495,7 @@ static int rdbSaveStringObjectRaw(FILE *fp, robj *obj) {
 
     /* Try LZF compression - under 20 bytes it's unable to compress even
      * aaaaaaaaaaaaaaaaaa so skip it */
 
     /* Try LZF compression - under 20 bytes it's unable to compress even
      * aaaaaaaaaaaaaaaaaa so skip it */

-    if (len > 20) {
+    if (server.rdbcompression && len > 20) {

         int retval;
 
         retval = rdbSaveLzfStringObject(fp,obj);
         int retval;
 
         retval = rdbSaveLzfStringObject(fp,obj);


@@ -2611,7 +2637,7 @@ static int rdbSave(char *filename) {
                 }
                 dictReleaseIterator(di);
             } else {
                 }
                 dictReleaseIterator(di);
             } else {

-                assert(0 != 0);
+                redisAssert(0 != 0);

             }
         }
         dictReleaseIterator(di);
             }
         }
         dictReleaseIterator(di);


@@ -2745,7 +2771,7 @@ static robj *rdbLoadIntegerObject(FILE *fp, int enctype) {
         val = (int32_t)v;
     } else {
         val = 0; /* anti-warning */
         val = (int32_t)v;
     } else {
         val = 0; /* anti-warning */

-        assert(0!=0);
+        redisAssert(0!=0);

     }
     return createObject(REDIS_STRING,sdscatprintf(sdsempty(),"%lld",val));
 }
     }
     return createObject(REDIS_STRING,sdscatprintf(sdsempty(),"%lld",val));
 }


@@ -2784,7 +2810,7 @@ static robj *rdbLoadStringObject(FILE*fp, int rdbver) {
         case REDIS_RDB_ENC_LZF:
             return tryObjectSharing(rdbLoadLzfStringObject(fp,rdbver));
         default:
         case REDIS_RDB_ENC_LZF:
             return tryObjectSharing(rdbLoadLzfStringObject(fp,rdbver));
         default:

-            assert(0!=0);
+            redisAssert(0!=0);

         }
     }
 
         }
     }
 


@@ -2809,6 +2835,7 @@ static int rdbLoadDoubleValue(FILE *fp, double *val) {
     case 253: *val = R_Nan; return 0;
     default:
         if (fread(buf,len,1,fp) == 0) return -1;
     case 253: *val = R_Nan; return 0;
     default:
         if (fread(buf,len,1,fp) == 0) return -1;

+        buf[len] = '\0';

         sscanf(buf, "%lg", val);
         return 0;
     }
         sscanf(buf, "%lg", val);
         return 0;
     }


@@ -2910,7 +2937,7 @@ static int rdbLoad(char *filename) {
                 incrRefCount(ele); /* added to skiplist */
             }
         } else {
                 incrRefCount(ele); /* added to skiplist */
             }
         } else {

-            assert(0 != 0);
+            redisAssert(0 != 0);

         }
         /* Add the new object in the hash table */
         retval = dictAdd(d,keyobj,o);
         }
         /* Add the new object in the hash table */
         retval = dictAdd(d,keyobj,o);


@@ -2964,6 +2991,7 @@ static void echoCommand(redisClient *c) {
 static void setGenericCommand(redisClient *c, int nx) {
     int retval;
 
 static void setGenericCommand(redisClient *c, int nx) {
     int retval;
 

+    if (nx) deleteIfVolatile(c->db,c->argv[1]);

     retval = dictAdd(c->db->dict,c->argv[1],c->argv[2]);
     if (retval == DICT_ERR) {
         if (!nx) {
     retval = dictAdd(c->db->dict,c->argv[1],c->argv[2]);
     if (retval == DICT_ERR) {
         if (!nx) {


@@ -3039,26 +3067,30 @@ static void mgetCommand(redisClient *c) {
 }
 
 static void msetGenericCommand(redisClient *c, int nx) {
 }
 
 static void msetGenericCommand(redisClient *c, int nx) {

-    int j;
+    int j, busykeys = 0;

 
     if ((c->argc % 2) == 0) {
 
     if ((c->argc % 2) == 0) {

-        addReplySds(c,sdsnew("-ERR wrong number of arguments\r\n"));
+        addReplySds(c,sdsnew("-ERR wrong number of arguments for MSET\r\n"));

         return;
     }
     /* Handle the NX flag. The MSETNX semantic is to return zero and don't
      * set nothing at all if at least one already key exists. */
     if (nx) {
         for (j = 1; j < c->argc; j += 2) {
         return;
     }
     /* Handle the NX flag. The MSETNX semantic is to return zero and don't
      * set nothing at all if at least one already key exists. */
     if (nx) {
         for (j = 1; j < c->argc; j += 2) {

-            if (dictFind(c->db->dict,c->argv[j]) != NULL) {
-                addReply(c, shared.czero);
-                return;
+            if (lookupKeyWrite(c->db,c->argv[j]) != NULL) {
+                busykeys++;

             }
         }
     }
             }
         }
     }

+    if (busykeys) {
+        addReply(c, shared.czero);
+        return;
+    }

 
     for (j = 1; j < c->argc; j += 2) {
         int retval;
 
 
     for (j = 1; j < c->argc; j += 2) {
         int retval;
 

+        tryObjectEncoding(c->argv[j+1]);

         retval = dictAdd(c->db->dict,c->argv[j],c->argv[j+1]);
         if (retval == DICT_ERR) {
             dictReplace(c->db->dict,c->argv[j],c->argv[j+1]);
         retval = dictAdd(c->db->dict,c->argv[j],c->argv[j+1]);
         if (retval == DICT_ERR) {
             dictReplace(c->db->dict,c->argv[j],c->argv[j+1]);


@@ -3100,7 +3132,7 @@ static void incrDecrCommand(redisClient *c, long long incr) {
             else if (o->encoding == REDIS_ENCODING_INT)
                 value = (long)o->ptr;
             else
             else if (o->encoding == REDIS_ENCODING_INT)
                 value = (long)o->ptr;
             else

-                assert(1 != 1);
+                redisAssert(1 != 1);

         }
     }
 
         }
     }
 


@@ -3198,7 +3230,7 @@ static void keysCommand(redisClient *c) {
     dictEntry *de;
     sds pattern = c->argv[1]->ptr;
     int plen = sdslen(pattern);
     dictEntry *de;
     sds pattern = c->argv[1]->ptr;
     int plen = sdslen(pattern);

-    int numkeys = 0, keyslen = 0;
+    unsigned long numkeys = 0, keyslen = 0;

     robj *lenobj = createObject(REDIS_STRING,NULL);
 
     di = dictGetIterator(c->db->dict);
     robj *lenobj = createObject(REDIS_STRING,NULL);
 
     di = dictGetIterator(c->db->dict);


@@ -3272,7 +3304,8 @@ static void bgsaveCommand(redisClient *c) {
         return;
     }
     if (rdbSaveBackground(server.dbfilename) == REDIS_OK) {
         return;
     }
     if (rdbSaveBackground(server.dbfilename) == REDIS_OK) {

-        addReply(c,shared.ok);
+        char *status = "+Background saving started\r\n";
+        addReplySds(c,sdsnew(status));

     } else {
         addReply(c,shared.err);
     }
     } else {
         addReply(c,shared.err);
     }


@@ -3288,20 +3321,26 @@ static void shutdownCommand(redisClient *c) {
         kill(server.bgsavechildpid,SIGKILL);
         rdbRemoveTempFile(server.bgsavechildpid);
     }
         kill(server.bgsavechildpid,SIGKILL);
         rdbRemoveTempFile(server.bgsavechildpid);
     }

-    /* SYNC SAVE */
-    if (rdbSave(server.dbfilename) == REDIS_OK) {
-        if (server.daemonize)
-            unlink(server.pidfile);
-        redisLog(REDIS_WARNING,"%zu bytes used at exit",zmalloc_used_memory());
-        redisLog(REDIS_WARNING,"Server exit now, bye bye...");
-        exit(1);
+    if (server.appendonly) {
+        /* Append only file: fsync() the AOF and exit */
+        fsync(server.appendfd);
+        exit(0);

     } else {
     } else {

-        /* Ooops.. error saving! The best we can do is to continue operating.
-         * Note that if there was a background saving process, in the next
-         * cron() Redis will be notified that the background saving aborted,
-         * handling special stuff like slaves pending for synchronization... */
-        redisLog(REDIS_WARNING,"Error trying to save the DB, can't exit"); 
-        addReplySds(c,sdsnew("-ERR can't quit, problems saving the DB\r\n"));
+        /* Snapshotting. Perform a SYNC SAVE and exit */
+        if (rdbSave(server.dbfilename) == REDIS_OK) {
+            if (server.daemonize)
+                unlink(server.pidfile);
+            redisLog(REDIS_WARNING,"%zu bytes used at exit",zmalloc_used_memory());
+            redisLog(REDIS_WARNING,"Server exit now, bye bye...");
+            exit(0);
+        } else {
+            /* Ooops.. error saving! The best we can do is to continue operating.
+             * Note that if there was a background saving process, in the next
+             * cron() Redis will be notified that the background saving aborted,
+             * handling special stuff like slaves pending for synchronization... */
+            redisLog(REDIS_WARNING,"Error trying to save the DB, can't exit"); 
+            addReplySds(c,sdsnew("-ERR can't quit, problems saving the DB\r\n"));
+        }

     }
 }
 
     }
 }
 


@@ -3599,7 +3638,7 @@ static void ltrimCommand(redisClient *c) {
     
     o = lookupKeyWrite(c->db,c->argv[1]);
     if (o == NULL) {
     
     o = lookupKeyWrite(c->db,c->argv[1]);
     if (o == NULL) {

-        addReply(c,shared.nokeyerr);
+        addReply(c,shared.ok);

     } else {
         if (o->type != REDIS_LIST) {
             addReply(c,shared.wrongtypeerr);
     } else {
         if (o->type != REDIS_LIST) {
             addReply(c,shared.wrongtypeerr);


@@ -3855,7 +3894,7 @@ static void scardCommand(redisClient *c) {
             addReply(c,shared.wrongtypeerr);
         } else {
             s = o->ptr;
             addReply(c,shared.wrongtypeerr);
         } else {
             s = o->ptr;

-            addReplySds(c,sdscatprintf(sdsempty(),":%d\r\n",
+            addReplySds(c,sdscatprintf(sdsempty(),":%lu\r\n",

                 dictSize(s)));
         }
     }
                 dictSize(s)));
         }
     }


@@ -3920,12 +3959,12 @@ static int qsortCompareSetsByCardinality(const void *s1, const void *s2) {
     return dictSize(*d1)-dictSize(*d2);
 }
 
     return dictSize(*d1)-dictSize(*d2);
 }
 

-static void sinterGenericCommand(redisClient *c, robj **setskeys, int setsnum, robj *dstkey) {
+static void sinterGenericCommand(redisClient *c, robj **setskeys, unsigned long setsnum, robj *dstkey) {

     dict **dv = zmalloc(sizeof(dict*)*setsnum);
     dictIterator *di;
     dictEntry *de;
     robj *lenobj = NULL, *dstset = NULL;
     dict **dv = zmalloc(sizeof(dict*)*setsnum);
     dictIterator *di;
     dictEntry *de;
     robj *lenobj = NULL, *dstset = NULL;

-    int j, cardinality = 0;
+    unsigned long j, cardinality = 0;

 
     for (j = 0; j < setsnum; j++) {
         robj *setobj;
 
     for (j = 0; j < setsnum; j++) {
         robj *setobj;


@@ -3936,8 +3975,9 @@ static void sinterGenericCommand(redisClient *c, robj **setskeys, int setsnum, r
         if (!setobj) {
             zfree(dv);
             if (dstkey) {
         if (!setobj) {
             zfree(dv);
             if (dstkey) {

-                deleteKey(c->db,dstkey);
-                addReply(c,shared.ok);
+                if (deleteKey(c->db,dstkey))
+                    server.dirty++;
+                addReply(c,shared.czero);

             } else {
                 addReply(c,shared.nullmultibulk);
             }
             } else {
                 addReply(c,shared.nullmultibulk);
             }


@@ -4002,9 +4042,9 @@ static void sinterGenericCommand(redisClient *c, robj **setskeys, int setsnum, r
     }
 
     if (!dstkey) {
     }
 
     if (!dstkey) {

-        lenobj->ptr = sdscatprintf(sdsempty(),"*%d\r\n",cardinality);
+        lenobj->ptr = sdscatprintf(sdsempty(),"*%lu\r\n",cardinality);

     } else {
     } else {

-        addReplySds(c,sdscatprintf(sdsempty(),":%d\r\n",
+        addReplySds(c,sdscatprintf(sdsempty(),":%lu\r\n",

             dictSize((dict*)dstset->ptr)));
         server.dirty++;
     }
             dictSize((dict*)dstset->ptr)));
         server.dirty++;
     }


@@ -4106,7 +4146,7 @@ static void sunionDiffGenericCommand(redisClient *c, robj **setskeys, int setsnu
     if (!dstkey) {
         decrRefCount(dstset);
     } else {
     if (!dstkey) {
         decrRefCount(dstset);
     } else {

-        addReplySds(c,sdscatprintf(sdsempty(),":%d\r\n",
+        addReplySds(c,sdscatprintf(sdsempty(),":%lu\r\n",

             dictSize((dict*)dstset->ptr)));
         server.dirty++;
     }
             dictSize((dict*)dstset->ptr)));
         server.dirty++;
     }


@@ -4392,14 +4432,14 @@ static void zaddGenericCommand(redisClient *c, robj *key, robj *ele, double scor
         
         /* case 2: Score update operation */
         de = dictFind(zs->dict,ele);
         
         /* case 2: Score update operation */
         de = dictFind(zs->dict,ele);

-        assert(de != NULL);
+        redisAssert(de != NULL);

         oldscore = dictGetEntryVal(de);
         if (*score != *oldscore) {
             int deleted;
 
             /* Remove and insert the element in the skip list with new score */
             deleted = zslDelete(zs->zsl,*oldscore,ele);
         oldscore = dictGetEntryVal(de);
         if (*score != *oldscore) {
             int deleted;
 
             /* Remove and insert the element in the skip list with new score */
             deleted = zslDelete(zs->zsl,*oldscore,ele);

-            assert(deleted != 0);
+            redisAssert(deleted != 0);

             zslInsert(zs->zsl,*score,ele);
             incrRefCount(ele);
             /* Update the score in the hash table */
             zslInsert(zs->zsl,*score,ele);
             incrRefCount(ele);
             /* Update the score in the hash table */


@@ -4454,7 +4494,7 @@ static void zremCommand(redisClient *c) {
         /* Delete from the skiplist */
         oldscore = dictGetEntryVal(de);
         deleted = zslDelete(zs->zsl,*oldscore,c->argv[2]);
         /* Delete from the skiplist */
         oldscore = dictGetEntryVal(de);
         deleted = zslDelete(zs->zsl,*oldscore,c->argv[2]);

-        assert(deleted != 0);
+        redisAssert(deleted != 0);

 
         /* Delete from the hash table */
         dictDelete(zs->dict,c->argv[2]);
 
         /* Delete from the hash table */
         dictDelete(zs->dict,c->argv[2]);


@@ -4492,6 +4532,14 @@ static void zrangeGenericCommand(redisClient *c, int reverse) {
     robj *o;
     int start = atoi(c->argv[2]->ptr);
     int end = atoi(c->argv[3]->ptr);
     robj *o;
     int start = atoi(c->argv[2]->ptr);
     int end = atoi(c->argv[3]->ptr);

+    int withscores = 0;
+
+    if (c->argc == 5 && !strcasecmp(c->argv[4]->ptr,"withscores")) {
+        withscores = 1;
+    } else if (c->argc >= 5) {
+        addReply(c,shared.syntaxerr);
+        return;
+    }

 
     o = lookupKeyRead(c->db,c->argv[1]);
     if (o == NULL) {
 
     o = lookupKeyRead(c->db,c->argv[1]);
     if (o == NULL) {


@@ -4534,12 +4582,15 @@ static void zrangeGenericCommand(redisClient *c, int reverse) {
                     ln = ln->forward[0];
             }
 
                     ln = ln->forward[0];
             }
 

-            addReplySds(c,sdscatprintf(sdsempty(),"*%d\r\n",rangelen));
+            addReplySds(c,sdscatprintf(sdsempty(),"*%d\r\n",
+                withscores ? (rangelen*2) : rangelen));

             for (j = 0; j < rangelen; j++) {
                 ele = ln->obj;
                 addReplyBulkLen(c,ele);
                 addReply(c,ele);
                 addReply(c,shared.crlf);
             for (j = 0; j < rangelen; j++) {
                 ele = ln->obj;
                 addReplyBulkLen(c,ele);
                 addReply(c,ele);
                 addReply(c,shared.crlf);

+                if (withscores)
+                    addReplyDouble(c,ln->score);

                 ln = reverse ? ln->backward : ln->forward[0];
             }
         }
                 ln = reverse ? ln->backward : ln->forward[0];
             }
         }


@@ -4558,6 +4609,20 @@ static void zrangebyscoreCommand(redisClient *c) {
     robj *o;
     double min = strtod(c->argv[2]->ptr,NULL);
     double max = strtod(c->argv[3]->ptr,NULL);
     robj *o;
     double min = strtod(c->argv[2]->ptr,NULL);
     double max = strtod(c->argv[3]->ptr,NULL);

+    int offset = 0, limit = -1;
+
+    if (c->argc != 4 && c->argc != 7) {
+        addReplySds(c,
+            sdsnew("-ERR wrong number of arguments for ZRANGEBYSCORE\r\n"));
+        return;
+    } else if (c->argc == 7 && strcasecmp(c->argv[4]->ptr,"limit")) {
+        addReply(c,shared.syntaxerr);
+        return;
+    } else if (c->argc == 7) {
+        offset = atoi(c->argv[5]->ptr);
+        limit = atoi(c->argv[6]->ptr);
+        if (offset < 0) offset = 0;
+    }

 
     o = lookupKeyRead(c->db,c->argv[1]);
     if (o == NULL) {
 
     o = lookupKeyRead(c->db,c->argv[1]);
     if (o == NULL) {


@@ -4586,14 +4651,22 @@ static void zrangebyscoreCommand(redisClient *c) {
              * it later */
             lenobj = createObject(REDIS_STRING,NULL);
             addReply(c,lenobj);
              * it later */
             lenobj = createObject(REDIS_STRING,NULL);
             addReply(c,lenobj);

+            decrRefCount(lenobj);

 
             while(ln && ln->score <= max) {
 
             while(ln && ln->score <= max) {

+                if (offset) {
+                    offset--;
+                    ln = ln->forward[0];
+                    continue;
+                }
+                if (limit == 0) break;

                 ele = ln->obj;
                 addReplyBulkLen(c,ele);
                 addReply(c,ele);
                 addReply(c,shared.crlf);
                 ln = ln->forward[0];
                 rangelen++;
                 ele = ln->obj;
                 addReplyBulkLen(c,ele);
                 addReply(c,ele);
                 addReply(c,shared.crlf);
                 ln = ln->forward[0];
                 rangelen++;

+                if (limit > 0) limit--;

             }
             lenobj->ptr = sdscatprintf(sdsempty(),"*%d\r\n",rangelen);
         }
             }
             lenobj->ptr = sdscatprintf(sdsempty(),"*%d\r\n",rangelen);
         }


@@ -4613,7 +4686,7 @@ static void zcardCommand(redisClient *c) {
             addReply(c,shared.wrongtypeerr);
         } else {
             zs = o->ptr;
             addReply(c,shared.wrongtypeerr);
         } else {
             zs = o->ptr;

-            addReplySds(c,sdscatprintf(sdsempty(),":%d\r\n",zs->zsl->length));
+            addReplySds(c,sdscatprintf(sdsempty(),":%lu\r\n",zs->zsl->length));

         }
     }
 }
         }
     }
 }


@@ -4711,10 +4784,7 @@ static robj *lookupKeyByPattern(redisDb *db, robj *pattern, robj *subst) {
     keyname.buf[prefixlen+sublen+postfixlen] = '\0';
     keyname.len = prefixlen+sublen+postfixlen;
 
     keyname.buf[prefixlen+sublen+postfixlen] = '\0';
     keyname.len = prefixlen+sublen+postfixlen;
 

-    keyobj.refcount = 1;
-    keyobj.type = REDIS_STRING;
-    keyobj.ptr = ((char*)&keyname)+(sizeof(long)*2);
-
+    initStaticStringObject(keyobj,((char*)&keyname)+(sizeof(long)*2))

     decrRefCount(subst);
 
     /* printf("lookup '%s' => %p\n", keyname.buf,de); */
     decrRefCount(subst);
 
     /* printf("lookup '%s' => %p\n", keyname.buf,de); */


@@ -4781,10 +4851,12 @@ static void sortCommand(redisClient *c) {
     /* Lookup the key to sort. It must be of the right types */
     sortval = lookupKeyRead(c->db,c->argv[1]);
     if (sortval == NULL) {
     /* Lookup the key to sort. It must be of the right types */
     sortval = lookupKeyRead(c->db,c->argv[1]);
     if (sortval == NULL) {

-        addReply(c,shared.nokeyerr);
+        addReply(c,shared.nullmultibulk);

         return;
     }
         return;
     }

-    if (sortval->type != REDIS_SET && sortval->type != REDIS_LIST) {
+    if (sortval->type != REDIS_SET && sortval->type != REDIS_LIST &&
+        sortval->type != REDIS_ZSET)
+    {

         addReply(c,shared.wrongtypeerr);
         return;
     }
         addReply(c,shared.wrongtypeerr);
         return;
     }


@@ -4837,11 +4909,15 @@ static void sortCommand(redisClient *c) {
     }
 
     /* Load the sorting vector with all the objects to sort */
     }
 
     /* Load the sorting vector with all the objects to sort */

-    vectorlen = (sortval->type == REDIS_LIST) ?
-        listLength((list*)sortval->ptr) :
-        dictSize((dict*)sortval->ptr);
+    switch(sortval->type) {
+    case REDIS_LIST: vectorlen = listLength((list*)sortval->ptr); break;
+    case REDIS_SET: vectorlen =  dictSize((dict*)sortval->ptr); break;
+    case REDIS_ZSET: vectorlen = dictSize(((zset*)sortval->ptr)->dict); break;
+    default: vectorlen = 0; redisAssert(0); /* Avoid GCC warning */
+    }

     vector = zmalloc(sizeof(redisSortObject)*vectorlen);
     j = 0;
     vector = zmalloc(sizeof(redisSortObject)*vectorlen);
     j = 0;

+

     if (sortval->type == REDIS_LIST) {
         list *list = sortval->ptr;
         listNode *ln;
     if (sortval->type == REDIS_LIST) {
         list *list = sortval->ptr;
         listNode *ln;


@@ -4855,10 +4931,17 @@ static void sortCommand(redisClient *c) {
             j++;
         }
     } else {
             j++;
         }
     } else {

-        dict *set = sortval->ptr;
+        dict *set;

         dictIterator *di;
         dictEntry *setele;
 
         dictIterator *di;
         dictEntry *setele;
 

+        if (sortval->type == REDIS_SET) {
+            set = sortval->ptr;
+        } else {
+            zset *zs = sortval->ptr;
+            set = zs->dict;
+        }
+

         di = dictGetIterator(set);
         while((setele = dictNext(di)) != NULL) {
             vector[j].obj = dictGetEntryKey(setele);
         di = dictGetIterator(set);
         while((setele = dictNext(di)) != NULL) {
             vector[j].obj = dictGetEntryKey(setele);


@@ -4868,7 +4951,7 @@ static void sortCommand(redisClient *c) {
         }
         dictReleaseIterator(di);
     }
         }
         dictReleaseIterator(di);
     }

-    assert(j == vectorlen);
+    redisAssert(j == vectorlen);

 
     /* Now it's time to load the right scores in the sorting vector */
     if (dontsort == 0) {
 
     /* Now it's time to load the right scores in the sorting vector */
     if (dontsort == 0) {


@@ -4890,7 +4973,7 @@ static void sortCommand(redisClient *c) {
                         if (byval->encoding == REDIS_ENCODING_INT) {
                             vector[j].u.score = (long)byval->ptr;
                         } else
                         if (byval->encoding == REDIS_ENCODING_INT) {
                             vector[j].u.score = (long)byval->ptr;
                         } else

-                            assert(1 != 1);
+                            redisAssert(1 != 1);

                     }
                 }
             } else {
                     }
                 }
             } else {


@@ -4901,7 +4984,7 @@ static void sortCommand(redisClient *c) {
                         if (vector[j].obj->encoding == REDIS_ENCODING_INT)
                             vector[j].u.score = (long) vector[j].obj->ptr;
                         else
                         if (vector[j].obj->encoding == REDIS_ENCODING_INT)
                             vector[j].u.score = (long) vector[j].obj->ptr;
                         else

-                            assert(1 != 1);
+                            redisAssert(1 != 1);

                     }
                 }
             }
                     }
                 }
             }


@@ -4956,7 +5039,7 @@ static void sortCommand(redisClient *c) {
                         addReply(c,shared.crlf);
                     }
                 } else {
                         addReply(c,shared.crlf);
                     }
                 } else {

-                    assert(sop->type == REDIS_SORT_GET); /* always fails */
+                    redisAssert(sop->type == REDIS_SORT_GET); /* always fails */

                 }
             }
         }
                 }
             }
         }


@@ -4985,7 +5068,7 @@ static void sortCommand(redisClient *c) {
                         incrRefCount(val);
                     }
                 } else {
                         incrRefCount(val);
                     }
                 } else {

-                    assert(sop->type == REDIS_SORT_GET); /* always fails */
+                    redisAssert(sop->type == REDIS_SORT_GET); /* always fails */

                 }
             }
         }
                 }
             }
         }


@@ -5009,7 +5092,10 @@ static void sortCommand(redisClient *c) {
     zfree(vector);
 }
 
     zfree(vector);
 }
 

-static void infoCommand(redisClient *c) {
+/* Create the string returned by the INFO command. This is decoupled
+ * by the INFO command itself as we need to report the same information
+ * on memory corruption problems. */
+static sds genRedisInfoString(void) {

     sds info;
     time_t uptime = time(NULL)-server.stat_starttime;
     int j;
     sds info;
     time_t uptime = time(NULL)-server.stat_starttime;
     int j;


@@ -5017,19 +5103,22 @@ static void infoCommand(redisClient *c) {
     info = sdscatprintf(sdsempty(),
         "redis_version:%s\r\n"
         "arch_bits:%s\r\n"
     info = sdscatprintf(sdsempty(),
         "redis_version:%s\r\n"
         "arch_bits:%s\r\n"

-        "uptime_in_seconds:%d\r\n"
-        "uptime_in_days:%d\r\n"
+        "multiplexing_api:%s\r\n"
+        "uptime_in_seconds:%ld\r\n"
+        "uptime_in_days:%ld\r\n"

         "connected_clients:%d\r\n"
         "connected_slaves:%d\r\n"
         "used_memory:%zu\r\n"
         "changes_since_last_save:%lld\r\n"
         "bgsave_in_progress:%d\r\n"
         "connected_clients:%d\r\n"
         "connected_slaves:%d\r\n"
         "used_memory:%zu\r\n"
         "changes_since_last_save:%lld\r\n"
         "bgsave_in_progress:%d\r\n"

-        "last_save_time:%d\r\n"
+        "last_save_time:%ld\r\n"
+        "bgrewriteaof_in_progress:%d\r\n"

         "total_connections_received:%lld\r\n"
         "total_commands_processed:%lld\r\n"
         "role:%s\r\n"
         ,REDIS_VERSION,
         (sizeof(long) == 8) ? "64" : "32",
         "total_connections_received:%lld\r\n"
         "total_commands_processed:%lld\r\n"
         "role:%s\r\n"
         ,REDIS_VERSION,
         (sizeof(long) == 8) ? "64" : "32",

+        aeGetApiName(),

         uptime,
         uptime/(3600*24),
         listLength(server.clients)-listLength(server.slaves),
         uptime,
         uptime/(3600*24),
         listLength(server.clients)-listLength(server.slaves),


@@ -5038,6 +5127,7 @@ static void infoCommand(redisClient *c) {
         server.dirty,
         server.bgsavechildpid != -1,
         server.lastsave,
         server.dirty,
         server.bgsavechildpid != -1,
         server.lastsave,

+        server.bgrewritechildpid != -1,

         server.stat_numconnections,
         server.stat_numcommands,
         server.masterhost == NULL ? "master" : "slave"
         server.stat_numconnections,
         server.stat_numcommands,
         server.masterhost == NULL ? "master" : "slave"


@@ -5065,7 +5155,13 @@ static void infoCommand(redisClient *c) {
                 j, keys, vkeys);
         }
     }
                 j, keys, vkeys);
         }
     }

-    addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",sdslen(info)));
+    return info;
+}
+
+static void infoCommand(redisClient *c) {
+    sds info = genRedisInfoString();
+    addReplySds(c,sdscatprintf(sdsempty(),"$%lu\r\n",
+        (unsigned long)sdslen(info)));

     addReplySds(c,info);
     addReply(c,shared.crlf);
 }
     addReplySds(c,info);
     addReply(c,shared.crlf);
 }


@@ -5514,6 +5610,7 @@ static int syncWithMaster(void) {
     }
     server.master = createClient(fd);
     server.master->flags |= REDIS_MASTER;
     }
     server.master = createClient(fd);
     server.master->flags |= REDIS_MASTER;

+    server.master->authenticated = 1;

     server.replstate = REDIS_REPL_CONNECTED;
     return REDIS_OK;
 }
     server.replstate = REDIS_REPL_CONNECTED;
     return REDIS_OK;
 }


@@ -5607,8 +5704,8 @@ static void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv
         char seldb[64];
 
         snprintf(seldb,sizeof(seldb),"%d",dictid);
         char seldb[64];
 
         snprintf(seldb,sizeof(seldb),"%d",dictid);

-        buf = sdscatprintf(buf,"*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n",
-            strlen(seldb),seldb);
+        buf = sdscatprintf(buf,"*2\r\n$6\r\nSELECT\r\n$%lu\r\n%s\r\n",
+            (unsigned long)strlen(seldb),seldb);

         server.appendseldb = dictid;
     }
 
         server.appendseldb = dictid;
     }
 


@@ -5632,7 +5729,7 @@ static void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv
         robj *o = argv[j];
 
         o = getDecodedObject(o);
         robj *o = argv[j];
 
         o = getDecodedObject(o);

-        buf = sdscatprintf(buf,"$%d\r\n",sdslen(o->ptr));
+        buf = sdscatprintf(buf,"$%lu\r\n",(unsigned long)sdslen(o->ptr));

         buf = sdscatlen(buf,o->ptr,sdslen(o->ptr));
         buf = sdscatlen(buf,"\r\n",2);
         decrRefCount(o);
         buf = sdscatlen(buf,o->ptr,sdslen(o->ptr));
         buf = sdscatlen(buf,"\r\n",2);
         decrRefCount(o);


@@ -5796,7 +5893,8 @@ static int fwriteBulk(FILE *fp, robj *obj) {
     obj = getDecodedObject(obj);
     snprintf(buf,sizeof(buf),"$%ld\r\n",(long)sdslen(obj->ptr));
     if (fwrite(buf,strlen(buf),1,fp) == 0) goto err;
     obj = getDecodedObject(obj);
     snprintf(buf,sizeof(buf),"$%ld\r\n",(long)sdslen(obj->ptr));
     if (fwrite(buf,strlen(buf),1,fp) == 0) goto err;

-    if (fwrite(obj->ptr,sdslen(obj->ptr),1,fp) == 0) goto err;
+    if (sdslen(obj->ptr) && fwrite(obj->ptr,sdslen(obj->ptr),1,fp) == 0)
+        goto err;

     if (fwrite("\r\n",2,1,fp) == 0) goto err;
     decrRefCount(obj);
     return 1;
     if (fwrite("\r\n",2,1,fp) == 0) goto err;
     decrRefCount(obj);
     return 1;


@@ -5921,11 +6019,11 @@ static int rewriteAppendOnlyFile(char *filename) {
                 }
                 dictReleaseIterator(di);
             } else {
                 }
                 dictReleaseIterator(di);
             } else {

-                assert(0 != 0);
+                redisAssert(0 != 0);

             }
             /* Save the expire time */
             if (expiretime != -1) {
             }
             /* Save the expire time */
             if (expiretime != -1) {

-                char cmd[]="*3\r\n$6\r\nEXPIRE\r\n";
+                char cmd[]="*3\r\n$8\r\nEXPIREAT\r\n";

                 /* If this key is already expired skip it */
                 if (expiretime < now) continue;
                 if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;
                 /* If this key is already expired skip it */
                 if (expiretime < now) continue;
                 if (fwrite(cmd,sizeof(cmd)-1,1,fp) == 0) goto werr;


@@ -5954,7 +6052,7 @@ static int rewriteAppendOnlyFile(char *filename) {
 werr:
     fclose(fp);
     unlink(tmpfile);
 werr:
     fclose(fp);
     unlink(tmpfile);

-    redisLog(REDIS_WARNING,"Write error writing append only fileon disk: %s", strerror(errno));
+    redisLog(REDIS_WARNING,"Write error writing append only file on disk: %s", strerror(errno));

     if (di) dictReleaseIterator(di);
     return REDIS_ERR;
 }
     if (di) dictReleaseIterator(di);
     return REDIS_ERR;
 }


@@ -6013,7 +6111,8 @@ static void bgrewriteaofCommand(redisClient *c) {
         return;
     }
     if (rewriteAppendOnlyFileBackground() == REDIS_OK) {
         return;
     }
     if (rewriteAppendOnlyFileBackground() == REDIS_OK) {

-        addReply(c,shared.ok);
+        char *status = "+Background append only file rewriting started\r\n";
+        addReplySds(c,sdsnew(status));

     } else {
         addReply(c,shared.err);
     }
     } else {
         addReply(c,shared.err);
     }


@@ -6043,6 +6142,14 @@ static void debugCommand(redisClient *c) {
         }
         redisLog(REDIS_WARNING,"DB reloaded by DEBUG RELOAD");
         addReply(c,shared.ok);
         }
         redisLog(REDIS_WARNING,"DB reloaded by DEBUG RELOAD");
         addReply(c,shared.ok);

+    } else if (!strcasecmp(c->argv[1]->ptr,"loadaof")) {
+        emptyDb();
+        if (loadAppendOnlyFile(server.appendfilename) != REDIS_OK) {
+            addReply(c,shared.err);
+            return;
+        }
+        redisLog(REDIS_WARNING,"Append Only File loaded by DEBUG LOADAOF");
+        addReply(c,shared.ok);

     } else if (!strcasecmp(c->argv[1]->ptr,"object") && c->argc == 3) {
         dictEntry *de = dictFind(c->db->dict,c->argv[2]);
         robj *key, *val;
     } else if (!strcasecmp(c->argv[1]->ptr,"object") && c->argc == 3) {
         dictEntry *de = dictFind(c->db->dict,c->argv[2]);
         robj *key, *val;


@@ -6055,13 +6162,23 @@ static void debugCommand(redisClient *c) {
         val = dictGetEntryVal(de);
         addReplySds(c,sdscatprintf(sdsempty(),
             "+Key at:%p refcount:%d, value at:%p refcount:%d encoding:%d\r\n",
         val = dictGetEntryVal(de);
         addReplySds(c,sdscatprintf(sdsempty(),
             "+Key at:%p refcount:%d, value at:%p refcount:%d encoding:%d\r\n",

-                key, key->refcount, val, val->refcount, val->encoding));
+                (void*)key, key->refcount, (void*)val, val->refcount,
+                val->encoding));

     } else {
         addReplySds(c,sdsnew(
             "-ERR Syntax error, try DEBUG [SEGFAULT|OBJECT <key>|RELOAD]\r\n"));
     }
 }
 
     } else {
         addReplySds(c,sdsnew(
             "-ERR Syntax error, try DEBUG [SEGFAULT|OBJECT <key>|RELOAD]\r\n"));
     }
 }
 

+static void _redisAssert(char *estr) {
+    redisLog(REDIS_WARNING,"=== ASSERTION FAILED ===");
+    redisLog(REDIS_WARNING,"==> %s\n",estr);
+#ifdef HAVE_BACKTRACE
+    redisLog(REDIS_WARNING,"(forcing SIGSEGV in order to print the stack trace)");
+    *((char*)-1) = 'x';
+#endif
+}
+

 /* =================================== Main! ================================ */
 
 #ifdef __linux__
 /* =================================== Main! ================================ */
 
 #ifdef __linux__


@@ -6091,6 +6208,7 @@ static void daemonize(void) {
     FILE *fp;
 
     if (fork() != 0) exit(0); /* parent exits */
     FILE *fp;
 
     if (fork() != 0) exit(0); /* parent exits */

+    printf("New pid: %d\n", getpid());

     setsid(); /* create a new session */
 
     /* Every output goes to /dev/null. If Redis is daemonized but
     setsid(); /* create a new session */
 
     /* Every output goes to /dev/null. If Redis is daemonized but


@@ -6121,8 +6239,8 @@ int main(int argc, char **argv) {
     } else {
         redisLog(REDIS_WARNING,"Warning: no config file specified, using the default config. In order to specify a config file use 'redis-server /path/to/redis.conf'");
     }
     } else {
         redisLog(REDIS_WARNING,"Warning: no config file specified, using the default config. In order to specify a config file use 'redis-server /path/to/redis.conf'");
     }

-    initServer();

     if (server.daemonize) daemonize();
     if (server.daemonize) daemonize();

+    initServer();

     redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION);
 #ifdef __linux__
     linuxOvercommitMemoryWarning();
     redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION);
 #ifdef __linux__
     linuxOvercommitMemoryWarning();


@@ -6153,7 +6271,11 @@ static void *getMcontextEip(ucontext_t *uc) {
 #elif defined(__dietlibc__)
     return (void*) uc->uc_mcontext.eip;
 #elif defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
 #elif defined(__dietlibc__)
     return (void*) uc->uc_mcontext.eip;
 #elif defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)

+  #if __x86_64__
+    return (void*) uc->uc_mcontext->__ss.__rip;
+  #else

     return (void*) uc->uc_mcontext->__ss.__eip;
     return (void*) uc->uc_mcontext->__ss.__eip;

+  #endif

 #elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
   #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
     return (void*) uc->uc_mcontext->__ss.__rip;
 #elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
   #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
     return (void*) uc->uc_mcontext->__ss.__rip;


@@ -6174,36 +6296,16 @@ static void segvHandler(int sig, siginfo_t *info, void *secret) {
     char **messages = NULL;
     int i, trace_size = 0;
     unsigned long offset=0;
     char **messages = NULL;
     int i, trace_size = 0;
     unsigned long offset=0;

-    time_t uptime = time(NULL)-server.stat_starttime;

     ucontext_t *uc = (ucontext_t*) secret;
     ucontext_t *uc = (ucontext_t*) secret;

+    sds infostring;

     REDIS_NOTUSED(info);
 
     redisLog(REDIS_WARNING,
         "======= Ooops! Redis %s got signal: -%d- =======", REDIS_VERSION, sig);
     REDIS_NOTUSED(info);
 
     redisLog(REDIS_WARNING,
         "======= Ooops! Redis %s got signal: -%d- =======", REDIS_VERSION, sig);

-    redisLog(REDIS_WARNING, "%s", sdscatprintf(sdsempty(),
-        "redis_version:%s; "
-        "uptime_in_seconds:%d; "
-        "connected_clients:%d; "
-        "connected_slaves:%d; "
-        "used_memory:%zu; "
-        "changes_since_last_save:%lld; "
-        "bgsave_in_progress:%d; "
-        "last_save_time:%d; "
-        "total_connections_received:%lld; "
-        "total_commands_processed:%lld; "
-        "role:%s;"
-        ,REDIS_VERSION,
-        uptime,
-        listLength(server.clients)-listLength(server.slaves),
-        listLength(server.slaves),
-        server.usedmemory,
-        server.dirty,
-        server.bgsavechildpid != -1,
-        server.lastsave,
-        server.stat_numconnections,
-        server.stat_numcommands,
-        server.masterhost == NULL ? "master" : "slave"
-    ));
+    infostring = genRedisInfoString();
+    redisLog(REDIS_WARNING, "%s",infostring);
+    /* It's not safe to sdsfree() the returned string under memory
+     * corruption conditions. Let it leak as we are going to abort */

     
     trace_size = backtrace(trace, 100);
     /* overwrite sigaction with caller's address */
     
     trace_size = backtrace(trace, 100);
     /* overwrite sigaction with caller's address */


@@ -6222,7 +6324,7 @@ static void segvHandler(int sig, siginfo_t *info, void *secret) {
             redisLog(REDIS_WARNING,"%d redis-server %p %s + %d", i, trace[i], fn, (unsigned int)offset);
         }
     }
             redisLog(REDIS_WARNING,"%d redis-server %p %s + %d", i, trace[i], fn, (unsigned int)offset);
         }
     }

-    free(messages);
+    // free(messages); Don't call free() with possibly corrupted memory.

     exit(0);
 }
 
     exit(0);
 }