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added lua struct c extension
[redis.git] / src / redis.c
diff --git a/src/redis.c b/src/redis.c
index 77f4666c2d4aba2c55cd9da77881adabc882178c..765f58dad3f98081cd323c29c76178f448904d02 100644 (file)
--- a/src/redis.c
+++ b/src/redis.c
@@ -29,11 +29,7 @@
 
 #include "redis.h"
 #include "slowlog.h"
 
 #include "redis.h"
 #include "slowlog.h"
-
-#ifdef HAVE_BACKTRACE
-#include <execinfo.h>
-#include <ucontext.h>
-#endif /* HAVE_BACKTRACE */
+#include "bio.h"
 
 #include <time.h>
 #include <signal.h>
 
 #include <time.h>
 #include <signal.h>
@@ -57,7 +53,7 @@
 
 struct sharedObjectsStruct shared;
 
 
 struct sharedObjectsStruct shared;
 
-/* Global vars that are actally used as constants. The following double
+/* Global vars that are actually used as constants. The following double
  * values are used for double on-disk serialization, and are initialized
  * at runtime to avoid strange compiler optimizations. */
 
  * values are used for double on-disk serialization, and are initialized
  * at runtime to avoid strange compiler optimizations. */
 
@@ -68,135 +64,185 @@ double R_Zero, R_PosInf, R_NegInf, R_Nan;
 /* Global vars */
 struct redisServer server; /* server global state */
 struct redisCommand *commandTable;
 /* Global vars */
 struct redisServer server; /* server global state */
 struct redisCommand *commandTable;
+
+/* Our command table.
+ *
+ * Every entry is composed of the following fields:
+ *
+ * name: a string representing the command name.
+ * function: pointer to the C function implementing the command.
+ * arity: number of arguments, it is possible to use -N to say >= N
+ * sflags: command flags as string. See below for a table of flags.
+ * flags: flags as bitmask. Computed by Redis using the 'sflags' field.
+ * get_keys_proc: an optional function to get key arguments from a command.
+ *                This is only used when the following three fields are not
+ *                enough to specify what arguments are keys.
+ * first_key_index: first argument that is a key
+ * last_key_index: last argument that is a key
+ * key_step: step to get all the keys from first to last argument. For instance
+ *           in MSET the step is two since arguments are key,val,key,val,...
+ * microseconds: microseconds of total execution time for this command.
+ * calls: total number of calls of this command.
+ *
+ * The flags, microseconds and calls fields are computed by Redis and should
+ * always be set to zero.
+ *
+ * Command flags are expressed using strings where every character represents
+ * a flag. Later the populateCommandTable() function will take care of
+ * populating the real 'flags' field using this characters.
+ *
+ * This is the meaning of the flags:
+ *
+ * w: write command (may modify the key space).
+ * r: read command  (will never modify the key space).
+ * m: may increase memory usage once called. Don't allow if out of memory.
+ * a: admin command, like SAVE or SHUTDOWN.
+ * p: Pub/Sub related command.
+ * f: force replication of this command, regarless of server.dirty.
+ * s: command not allowed in scripts.
+ * R: random command. Command is not deterministic, that is, the same command
+ *    with the same arguments, with the same key space, may have different
+ *    results. For instance SPOP and RANDOMKEY are two random commands.
+ * S: Sort command output array if called from script, so that the output
+ *    is deterministic.
+ */
 struct redisCommand redisCommandTable[] = {
 struct redisCommand redisCommandTable[] = {
-    {"get",getCommand,2,0,NULL,1,1,1,0,0},
-    {"set",setCommand,3,REDIS_CMD_DENYOOM,noPreloadGetKeys,1,1,1,0,0},
-    {"setnx",setnxCommand,3,REDIS_CMD_DENYOOM,noPreloadGetKeys,1,1,1,0,0},
-    {"setex",setexCommand,4,REDIS_CMD_DENYOOM,noPreloadGetKeys,2,2,1,0,0},
-    {"append",appendCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"strlen",strlenCommand,2,0,NULL,1,1,1,0,0},
-    {"del",delCommand,-2,0,noPreloadGetKeys,1,-1,1,0,0},
-    {"exists",existsCommand,2,0,NULL,1,1,1,0,0},
-    {"setbit",setbitCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"getbit",getbitCommand,3,0,NULL,1,1,1,0,0},
-    {"setrange",setrangeCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"getrange",getrangeCommand,4,0,NULL,1,1,1,0,0},
-    {"substr",getrangeCommand,4,0,NULL,1,1,1,0,0},
-    {"incr",incrCommand,2,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"decr",decrCommand,2,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"mget",mgetCommand,-2,0,NULL,1,-1,1,0,0},
-    {"rpush",rpushCommand,-3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"lpush",lpushCommand,-3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"rpushx",rpushxCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"lpushx",lpushxCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"linsert",linsertCommand,5,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"rpop",rpopCommand,2,0,NULL,1,1,1,0,0},
-    {"lpop",lpopCommand,2,0,NULL,1,1,1,0,0},
-    {"brpop",brpopCommand,-3,0,NULL,1,1,1,0,0},
-    {"brpoplpush",brpoplpushCommand,4,REDIS_CMD_DENYOOM,NULL,1,2,1,0,0},
-    {"blpop",blpopCommand,-3,0,NULL,1,-2,1,0,0},
-    {"llen",llenCommand,2,0,NULL,1,1,1,0,0},
-    {"lindex",lindexCommand,3,0,NULL,1,1,1,0,0},
-    {"lset",lsetCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"lrange",lrangeCommand,4,0,NULL,1,1,1,0,0},
-    {"ltrim",ltrimCommand,4,0,NULL,1,1,1,0,0},
-    {"lrem",lremCommand,4,0,NULL,1,1,1,0,0},
-    {"rpoplpush",rpoplpushCommand,3,REDIS_CMD_DENYOOM,NULL,1,2,1,0,0},
-    {"sadd",saddCommand,-3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"srem",sremCommand,-3,0,NULL,1,1,1,0,0},
-    {"smove",smoveCommand,4,0,NULL,1,2,1,0,0},
-    {"sismember",sismemberCommand,3,0,NULL,1,1,1,0,0},
-    {"scard",scardCommand,2,0,NULL,1,1,1,0,0},
-    {"spop",spopCommand,2,0,NULL,1,1,1,0,0},
-    {"srandmember",srandmemberCommand,2,0,NULL,1,1,1,0,0},
-    {"sinter",sinterCommand,-2,REDIS_CMD_DENYOOM,NULL,1,-1,1,0,0},
-    {"sinterstore",sinterstoreCommand,-3,REDIS_CMD_DENYOOM,NULL,2,-1,1,0,0},
-    {"sunion",sunionCommand,-2,REDIS_CMD_DENYOOM,NULL,1,-1,1,0,0},
-    {"sunionstore",sunionstoreCommand,-3,REDIS_CMD_DENYOOM,NULL,2,-1,1,0,0},
-    {"sdiff",sdiffCommand,-2,REDIS_CMD_DENYOOM,NULL,1,-1,1,0,0},
-    {"sdiffstore",sdiffstoreCommand,-3,REDIS_CMD_DENYOOM,NULL,2,-1,1,0,0},
-    {"smembers",sinterCommand,2,0,NULL,1,1,1,0,0},
-    {"zadd",zaddCommand,-4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"zincrby",zincrbyCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"zrem",zremCommand,-3,0,NULL,1,1,1,0,0},
-    {"zremrangebyscore",zremrangebyscoreCommand,4,0,NULL,1,1,1,0,0},
-    {"zremrangebyrank",zremrangebyrankCommand,4,0,NULL,1,1,1,0,0},
-    {"zunionstore",zunionstoreCommand,-4,REDIS_CMD_DENYOOM,zunionInterGetKeys,0,0,0,0,0},
-    {"zinterstore",zinterstoreCommand,-4,REDIS_CMD_DENYOOM,zunionInterGetKeys,0,0,0,0,0},
-    {"zrange",zrangeCommand,-4,0,NULL,1,1,1,0,0},
-    {"zrangebyscore",zrangebyscoreCommand,-4,0,NULL,1,1,1,0,0},
-    {"zrevrangebyscore",zrevrangebyscoreCommand,-4,0,NULL,1,1,1,0,0},
-    {"zcount",zcountCommand,4,0,NULL,1,1,1,0,0},
-    {"zrevrange",zrevrangeCommand,-4,0,NULL,1,1,1,0,0},
-    {"zcard",zcardCommand,2,0,NULL,1,1,1,0,0},
-    {"zscore",zscoreCommand,3,0,NULL,1,1,1,0,0},
-    {"zrank",zrankCommand,3,0,NULL,1,1,1,0,0},
-    {"zrevrank",zrevrankCommand,3,0,NULL,1,1,1,0,0},
-    {"hset",hsetCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"hsetnx",hsetnxCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"hget",hgetCommand,3,0,NULL,1,1,1,0,0},
-    {"hmset",hmsetCommand,-4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"hmget",hmgetCommand,-3,0,NULL,1,1,1,0,0},
-    {"hincrby",hincrbyCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"hdel",hdelCommand,-3,0,NULL,1,1,1,0,0},
-    {"hlen",hlenCommand,2,0,NULL,1,1,1,0,0},
-    {"hkeys",hkeysCommand,2,0,NULL,1,1,1,0,0},
-    {"hvals",hvalsCommand,2,0,NULL,1,1,1,0,0},
-    {"hgetall",hgetallCommand,2,0,NULL,1,1,1,0,0},
-    {"hexists",hexistsCommand,3,0,NULL,1,1,1,0,0},
-    {"incrby",incrbyCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"decrby",decrbyCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"getset",getsetCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"mset",msetCommand,-3,REDIS_CMD_DENYOOM,NULL,1,-1,2,0,0},
-    {"msetnx",msetnxCommand,-3,REDIS_CMD_DENYOOM,NULL,1,-1,2,0,0},
-    {"randomkey",randomkeyCommand,1,0,NULL,0,0,0,0,0},
-    {"select",selectCommand,2,0,NULL,0,0,0,0,0},
-    {"move",moveCommand,3,0,NULL,1,1,1,0,0},
-    {"rename",renameCommand,3,0,renameGetKeys,1,2,1,0,0},
-    {"renamenx",renamenxCommand,3,0,renameGetKeys,1,2,1,0,0},
-    {"expire",expireCommand,3,0,NULL,1,1,1,0,0},
-    {"expireat",expireatCommand,3,0,NULL,1,1,1,0,0},
-    {"keys",keysCommand,2,0,NULL,0,0,0,0,0},
-    {"dbsize",dbsizeCommand,1,0,NULL,0,0,0,0,0},
-    {"auth",authCommand,2,0,NULL,0,0,0,0,0},
-    {"ping",pingCommand,1,0,NULL,0,0,0,0,0},
-    {"echo",echoCommand,2,0,NULL,0,0,0,0,0},
-    {"save",saveCommand,1,0,NULL,0,0,0,0,0},
-    {"bgsave",bgsaveCommand,1,0,NULL,0,0,0,0,0},
-    {"bgrewriteaof",bgrewriteaofCommand,1,0,NULL,0,0,0,0,0},
-    {"shutdown",shutdownCommand,1,0,NULL,0,0,0,0,0},
-    {"lastsave",lastsaveCommand,1,0,NULL,0,0,0,0,0},
-    {"type",typeCommand,2,0,NULL,1,1,1,0,0},
-    {"multi",multiCommand,1,0,NULL,0,0,0,0,0},
-    {"exec",execCommand,1,REDIS_CMD_DENYOOM,NULL,0,0,0,0,0},
-    {"discard",discardCommand,1,0,NULL,0,0,0,0,0},
-    {"sync",syncCommand,1,0,NULL,0,0,0,0,0},
-    {"flushdb",flushdbCommand,1,0,NULL,0,0,0,0,0},
-    {"flushall",flushallCommand,1,0,NULL,0,0,0,0,0},
-    {"sort",sortCommand,-2,REDIS_CMD_DENYOOM,NULL,1,1,1,0,0},
-    {"info",infoCommand,-1,0,NULL,0,0,0,0,0},
-    {"monitor",monitorCommand,1,0,NULL,0,0,0,0,0},
-    {"ttl",ttlCommand,2,0,NULL,1,1,1,0,0},
-    {"persist",persistCommand,2,0,NULL,1,1,1,0,0},
-    {"slaveof",slaveofCommand,3,0,NULL,0,0,0,0,0},
-    {"debug",debugCommand,-2,0,NULL,0,0,0,0,0},
-    {"config",configCommand,-2,0,NULL,0,0,0,0,0},
-    {"subscribe",subscribeCommand,-2,0,NULL,0,0,0,0,0},
-    {"unsubscribe",unsubscribeCommand,-1,0,NULL,0,0,0,0,0},
-    {"psubscribe",psubscribeCommand,-2,0,NULL,0,0,0,0,0},
-    {"punsubscribe",punsubscribeCommand,-1,0,NULL,0,0,0,0,0},
-    {"publish",publishCommand,3,REDIS_CMD_FORCE_REPLICATION,NULL,0,0,0,0,0},
-    {"watch",watchCommand,-2,0,noPreloadGetKeys,1,-1,1,0,0},
-    {"unwatch",unwatchCommand,1,0,NULL,0,0,0,0,0},
-    {"cluster",clusterCommand,-2,0,NULL,0,0,0,0,0},
-    {"restore",restoreCommand,4,0,NULL,0,0,0,0,0},
-    {"migrate",migrateCommand,6,0,NULL,0,0,0,0,0},
-    {"dump",dumpCommand,2,0,NULL,0,0,0,0,0},
-    {"object",objectCommand,-2,0,NULL,0,0,0,0,0},
-    {"client",clientCommand,-2,0,NULL,0,0,0,0,0},
-    {"eval",evalCommand,-3,REDIS_CMD_DENYOOM,zunionInterGetKeys,0,0,0,0,0},
-    {"evalsha",evalShaCommand,-3,REDIS_CMD_DENYOOM,zunionInterGetKeys,0,0,0,0,0},
-    {"slowlog",slowlogCommand,-2,0,NULL,0,0,0,0,0}
+    {"get",getCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"set",setCommand,3,"wm",0,noPreloadGetKeys,1,1,1,0,0},
+    {"setnx",setnxCommand,3,"wm",0,noPreloadGetKeys,1,1,1,0,0},
+    {"setex",setexCommand,4,"wm",0,noPreloadGetKeys,1,1,1,0,0},
+    {"psetex",psetexCommand,4,"wm",0,noPreloadGetKeys,1,1,1,0,0},
+    {"append",appendCommand,3,"wm",0,NULL,1,1,1,0,0},
+    {"strlen",strlenCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"del",delCommand,-2,"w",0,noPreloadGetKeys,1,-1,1,0,0},
+    {"exists",existsCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"setbit",setbitCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"getbit",getbitCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"setrange",setrangeCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"getrange",getrangeCommand,4,"r",0,NULL,1,1,1,0,0},
+    {"substr",getrangeCommand,4,"r",0,NULL,1,1,1,0,0},
+    {"incr",incrCommand,2,"wm",0,NULL,1,1,1,0,0},
+    {"decr",decrCommand,2,"wm",0,NULL,1,1,1,0,0},
+    {"mget",mgetCommand,-2,"r",0,NULL,1,-1,1,0,0},
+    {"rpush",rpushCommand,-3,"wm",0,NULL,1,1,1,0,0},
+    {"lpush",lpushCommand,-3,"wm",0,NULL,1,1,1,0,0},
+    {"rpushx",rpushxCommand,3,"wm",0,NULL,1,1,1,0,0},
+    {"lpushx",lpushxCommand,3,"wm",0,NULL,1,1,1,0,0},
+    {"linsert",linsertCommand,5,"wm",0,NULL,1,1,1,0,0},
+    {"rpop",rpopCommand,2,"w",0,NULL,1,1,1,0,0},
+    {"lpop",lpopCommand,2,"w",0,NULL,1,1,1,0,0},
+    {"brpop",brpopCommand,-3,"ws",0,NULL,1,1,1,0,0},
+    {"brpoplpush",brpoplpushCommand,4,"wms",0,NULL,1,2,1,0,0},
+    {"blpop",blpopCommand,-3,"ws",0,NULL,1,-2,1,0,0},
+    {"llen",llenCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"lindex",lindexCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"lset",lsetCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"lrange",lrangeCommand,4,"r",0,NULL,1,1,1,0,0},
+    {"ltrim",ltrimCommand,4,"w",0,NULL,1,1,1,0,0},
+    {"lrem",lremCommand,4,"w",0,NULL,1,1,1,0,0},
+    {"rpoplpush",rpoplpushCommand,3,"wm",0,NULL,1,2,1,0,0},
+    {"sadd",saddCommand,-3,"wm",0,NULL,1,1,1,0,0},
+    {"srem",sremCommand,-3,"w",0,NULL,1,1,1,0,0},
+    {"smove",smoveCommand,4,"w",0,NULL,1,2,1,0,0},
+    {"sismember",sismemberCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"scard",scardCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"spop",spopCommand,2,"wRs",0,NULL,1,1,1,0,0},
+    {"srandmember",srandmemberCommand,2,"rR",0,NULL,1,1,1,0,0},
+    {"sinter",sinterCommand,-2,"rS",0,NULL,1,-1,1,0,0},
+    {"sinterstore",sinterstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
+    {"sunion",sunionCommand,-2,"rS",0,NULL,1,-1,1,0,0},
+    {"sunionstore",sunionstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
+    {"sdiff",sdiffCommand,-2,"rS",0,NULL,1,-1,1,0,0},
+    {"sdiffstore",sdiffstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
+    {"smembers",sinterCommand,2,"rS",0,NULL,1,1,1,0,0},
+    {"zadd",zaddCommand,-4,"wm",0,NULL,1,1,1,0,0},
+    {"zincrby",zincrbyCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"zrem",zremCommand,-3,"w",0,NULL,1,1,1,0,0},
+    {"zremrangebyscore",zremrangebyscoreCommand,4,"w",0,NULL,1,1,1,0,0},
+    {"zremrangebyrank",zremrangebyrankCommand,4,"w",0,NULL,1,1,1,0,0},
+    {"zunionstore",zunionstoreCommand,-4,"wm",0,zunionInterGetKeys,0,0,0,0,0},
+    {"zinterstore",zinterstoreCommand,-4,"wm",0,zunionInterGetKeys,0,0,0,0,0},
+    {"zrange",zrangeCommand,-4,"r",0,NULL,1,1,1,0,0},
+    {"zrangebyscore",zrangebyscoreCommand,-4,"r",0,NULL,1,1,1,0,0},
+    {"zrevrangebyscore",zrevrangebyscoreCommand,-4,"r",0,NULL,1,1,1,0,0},
+    {"zcount",zcountCommand,4,"r",0,NULL,1,1,1,0,0},
+    {"zrevrange",zrevrangeCommand,-4,"r",0,NULL,1,1,1,0,0},
+    {"zcard",zcardCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"zscore",zscoreCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"zrank",zrankCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"zrevrank",zrevrankCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"hset",hsetCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"hsetnx",hsetnxCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"hget",hgetCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"hmset",hmsetCommand,-4,"wm",0,NULL,1,1,1,0,0},
+    {"hmget",hmgetCommand,-3,"r",0,NULL,1,1,1,0,0},
+    {"hincrby",hincrbyCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"hincrbyfloat",hincrbyfloatCommand,4,"wm",0,NULL,1,1,1,0,0},
+    {"hdel",hdelCommand,-3,"w",0,NULL,1,1,1,0,0},
+    {"hlen",hlenCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"hkeys",hkeysCommand,2,"rS",0,NULL,1,1,1,0,0},
+    {"hvals",hvalsCommand,2,"rS",0,NULL,1,1,1,0,0},
+    {"hgetall",hgetallCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"hexists",hexistsCommand,3,"r",0,NULL,1,1,1,0,0},
+    {"incrby",incrbyCommand,3,"wm",0,NULL,1,1,1,0,0},
+    {"decrby",decrbyCommand,3,"wm",0,NULL,1,1,1,0,0},
+    {"incrbyfloat",incrbyfloatCommand,3,"wm",0,NULL,1,1,1,0,0},
+    {"getset",getsetCommand,3,"wm",0,NULL,1,1,1,0,0},
+    {"mset",msetCommand,-3,"wm",0,NULL,1,-1,2,0,0},
+    {"msetnx",msetnxCommand,-3,"wm",0,NULL,1,-1,2,0,0},
+    {"randomkey",randomkeyCommand,1,"rR",0,NULL,0,0,0,0,0},
+    {"select",selectCommand,2,"r",0,NULL,0,0,0,0,0},
+    {"move",moveCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"rename",renameCommand,3,"w",0,renameGetKeys,1,2,1,0,0},
+    {"renamenx",renamenxCommand,3,"w",0,renameGetKeys,1,2,1,0,0},
+    {"expire",expireCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"expireat",expireatCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"pexpire",pexpireCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"pexpireat",pexpireatCommand,3,"w",0,NULL,1,1,1,0,0},
+    {"keys",keysCommand,2,"rS",0,NULL,0,0,0,0,0},
+    {"dbsize",dbsizeCommand,1,"r",0,NULL,0,0,0,0,0},
+    {"auth",authCommand,2,"rs",0,NULL,0,0,0,0,0},
+    {"ping",pingCommand,1,"r",0,NULL,0,0,0,0,0},
+    {"echo",echoCommand,2,"r",0,NULL,0,0,0,0,0},
+    {"save",saveCommand,1,"ars",0,NULL,0,0,0,0,0},
+    {"bgsave",bgsaveCommand,1,"ar",0,NULL,0,0,0,0,0},
+    {"bgrewriteaof",bgrewriteaofCommand,1,"ar",0,NULL,0,0,0,0,0},
+    {"shutdown",shutdownCommand,-1,"ar",0,NULL,0,0,0,0,0},
+    {"lastsave",lastsaveCommand,1,"r",0,NULL,0,0,0,0,0},
+    {"type",typeCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"multi",multiCommand,1,"rs",0,NULL,0,0,0,0,0},
+    {"exec",execCommand,1,"wms",0,NULL,0,0,0,0,0},
+    {"discard",discardCommand,1,"rs",0,NULL,0,0,0,0,0},
+    {"sync",syncCommand,1,"ars",0,NULL,0,0,0,0,0},
+    {"flushdb",flushdbCommand,1,"w",0,NULL,0,0,0,0,0},
+    {"flushall",flushallCommand,1,"w",0,NULL,0,0,0,0,0},
+    {"sort",sortCommand,-2,"wmS",0,NULL,1,1,1,0,0},
+    {"info",infoCommand,-1,"r",0,NULL,0,0,0,0,0},
+    {"monitor",monitorCommand,1,"ars",0,NULL,0,0,0,0,0},
+    {"ttl",ttlCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"pttl",pttlCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"persist",persistCommand,2,"w",0,NULL,1,1,1,0,0},
+    {"slaveof",slaveofCommand,3,"aws",0,NULL,0,0,0,0,0},
+    {"debug",debugCommand,-2,"aws",0,NULL,0,0,0,0,0},
+    {"config",configCommand,-2,"ar",0,NULL,0,0,0,0,0},
+    {"subscribe",subscribeCommand,-2,"rps",0,NULL,0,0,0,0,0},
+    {"unsubscribe",unsubscribeCommand,-1,"rps",0,NULL,0,0,0,0,0},
+    {"psubscribe",psubscribeCommand,-2,"rps",0,NULL,0,0,0,0,0},
+    {"punsubscribe",punsubscribeCommand,-1,"rps",0,NULL,0,0,0,0,0},
+    {"publish",publishCommand,3,"rpf",0,NULL,0,0,0,0,0},
+    {"watch",watchCommand,-2,"rs",0,noPreloadGetKeys,1,-1,1,0,0},
+    {"unwatch",unwatchCommand,1,"rs",0,NULL,0,0,0,0,0},
+    {"cluster",clusterCommand,-2,"ar",0,NULL,0,0,0,0,0},
+    {"restore",restoreCommand,4,"awm",0,NULL,1,1,1,0,0},
+    {"migrate",migrateCommand,6,"aw",0,NULL,0,0,0,0,0},
+    {"asking",askingCommand,1,"r",0,NULL,0,0,0,0,0},
+    {"dump",dumpCommand,2,"ar",0,NULL,1,1,1,0,0},
+    {"object",objectCommand,-2,"r",0,NULL,2,2,2,0,0},
+    {"client",clientCommand,-2,"ar",0,NULL,0,0,0,0,0},
+    {"eval",evalCommand,-3,"wms",0,zunionInterGetKeys,0,0,0,0,0},
+    {"evalsha",evalShaCommand,-3,"wms",0,zunionInterGetKeys,0,0,0,0,0},
+    {"slowlog",slowlogCommand,-2,"r",0,NULL,0,0,0,0,0},
+    {"script",scriptCommand,-2,"ras",0,NULL,0,0,0,0,0}
 };
 
 /*============================ Utility functions ============================ */
 };
 
 /*============================ Utility functions ============================ */
@@ -268,6 +314,11 @@ long long ustime(void) {
     return ust;
 }
 
     return ust;
 }
 
+/* Return the UNIX time in milliseconds */
+long long mstime(void) {
+    return ustime()/1000;
+}
+
 /*====================== Hash table type implementation  ==================== */
 
 /* This is an hash table type that uses the SDS dynamic strings libary as
 /*====================== Hash table type implementation  ==================== */
 
 /* This is an hash table type that uses the SDS dynamic strings libary as
@@ -510,7 +561,7 @@ void incrementallyRehash(void) {
  * for dict.c to resize the hash tables accordingly to the fact we have o not
  * running childs. */
 void updateDictResizePolicy(void) {
  * for dict.c to resize the hash tables accordingly to the fact we have o not
  * running childs. */
 void updateDictResizePolicy(void) {
-    if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1)
+    if (server.rdb_child_pid == -1 && server.aof_child_pid == -1)
         dictEnableResize();
     else
         dictDisableResize();
         dictEnableResize();
     else
         dictDisableResize();
@@ -533,19 +584,19 @@ void activeExpireCycle(void) {
          * of the keys were expired. */
         do {
             long num = dictSize(db->expires);
          * of the keys were expired. */
         do {
             long num = dictSize(db->expires);
-            time_t now = time(NULL);
+            long long now = mstime();
 
             expired = 0;
             if (num > REDIS_EXPIRELOOKUPS_PER_CRON)
                 num = REDIS_EXPIRELOOKUPS_PER_CRON;
             while (num--) {
                 dictEntry *de;
 
             expired = 0;
             if (num > REDIS_EXPIRELOOKUPS_PER_CRON)
                 num = REDIS_EXPIRELOOKUPS_PER_CRON;
             while (num--) {
                 dictEntry *de;
-                time_t t;
+                long long t;
 
                 if ((de = dictGetRandomKey(db->expires)) == NULL) break;
 
                 if ((de = dictGetRandomKey(db->expires)) == NULL) break;
-                t = (time_t) dictGetEntryVal(de);
+                t = dictGetSignedIntegerVal(de);
                 if (now > t) {
                 if (now > t) {
-                    sds key = dictGetEntryKey(de);
+                    sds key = dictGetKey(de);
                     robj *keyobj = createStringObject(key,sdslen(key));
 
                     propagateExpire(db,keyobj);
                     robj *keyobj = createStringObject(key,sdslen(key));
 
                     propagateExpire(db,keyobj);
@@ -597,7 +648,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
     /* We received a SIGTERM, shutting down here in a safe way, as it is
      * not ok doing so inside the signal handler. */
     if (server.shutdown_asap) {
     /* We received a SIGTERM, shutting down here in a safe way, as it is
      * not ok doing so inside the signal handler. */
     if (server.shutdown_asap) {
-        if (prepareForShutdown() == REDIS_OK) exit(0);
+        if (prepareForShutdown(0) == REDIS_OK) exit(0);
         redisLog(REDIS_WARNING,"SIGTERM received but errors trying to shut down the server, check the logs for more information");
     }
 
         redisLog(REDIS_WARNING,"SIGTERM received but errors trying to shut down the server, check the logs for more information");
     }
 
@@ -620,7 +671,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
      * if we resize the HT while there is the saving child at work actually
      * a lot of memory movements in the parent will cause a lot of pages
      * copied. */
      * if we resize the HT while there is the saving child at work actually
      * a lot of memory movements in the parent will cause a lot of pages
      * copied. */
-    if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1) {
+    if (server.rdb_child_pid == -1 && server.aof_child_pid == -1) {
         if (!(loops % 10)) tryResizeHashTables();
         if (server.activerehashing) incrementallyRehash();
     }
         if (!(loops % 10)) tryResizeHashTables();
         if (server.activerehashing) incrementallyRehash();
     }
@@ -639,14 +690,14 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
 
     /* Start a scheduled AOF rewrite if this was requested by the user while
      * a BGSAVE was in progress. */
 
     /* Start a scheduled AOF rewrite if this was requested by the user while
      * a BGSAVE was in progress. */
-    if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1 &&
-        server.aofrewrite_scheduled)
+    if (server.rdb_child_pid == -1 && server.aof_child_pid == -1 &&
+        server.aof_rewrite_scheduled)
     {
         rewriteAppendOnlyFileBackground();
     }
 
     /* Check if a background saving or AOF rewrite in progress terminated. */
     {
         rewriteAppendOnlyFileBackground();
     }
 
     /* Check if a background saving or AOF rewrite in progress terminated. */
-    if (server.bgsavechildpid != -1 || server.bgrewritechildpid != -1) {
+    if (server.rdb_child_pid != -1 || server.aof_child_pid != -1) {
         int statloc;
         pid_t pid;
 
         int statloc;
         pid_t pid;
 
@@ -656,7 +707,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
             
             if (WIFSIGNALED(statloc)) bysignal = WTERMSIG(statloc);
 
             
             if (WIFSIGNALED(statloc)) bysignal = WTERMSIG(statloc);
 
-            if (pid == server.bgsavechildpid) {
+            if (pid == server.rdb_child_pid) {
                 backgroundSaveDoneHandler(exitcode,bysignal);
             } else {
                 backgroundRewriteDoneHandler(exitcode,bysignal);
                 backgroundSaveDoneHandler(exitcode,bysignal);
             } else {
                 backgroundRewriteDoneHandler(exitcode,bysignal);
@@ -675,32 +726,40 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
                 now-server.lastsave > sp->seconds) {
                 redisLog(REDIS_NOTICE,"%d changes in %d seconds. Saving...",
                     sp->changes, sp->seconds);
                 now-server.lastsave > sp->seconds) {
                 redisLog(REDIS_NOTICE,"%d changes in %d seconds. Saving...",
                     sp->changes, sp->seconds);
-                rdbSaveBackground(server.dbfilename);
+                rdbSaveBackground(server.rdb_filename);
                 break;
             }
          }
 
          /* Trigger an AOF rewrite if needed */
                 break;
             }
          }
 
          /* Trigger an AOF rewrite if needed */
-         if (server.bgsavechildpid == -1 &&
-             server.bgrewritechildpid == -1 &&
-             server.auto_aofrewrite_perc &&
-             server.appendonly_current_size > server.auto_aofrewrite_min_size)
+         if (server.rdb_child_pid == -1 &&
+             server.aof_child_pid == -1 &&
+             server.aof_rewrite_perc &&
+             server.aof_current_size > server.aof_rewrite_min_size)
          {
          {
-            long long base = server.auto_aofrewrite_base_size ?
-                            server.auto_aofrewrite_base_size : 1;
-            long long growth = (server.appendonly_current_size*100/base) - 100;
-            if (growth >= server.auto_aofrewrite_perc) {
+            long long base = server.aof_rewrite_base_size ?
+                            server.aof_rewrite_base_size : 1;
+            long long growth = (server.aof_current_size*100/base) - 100;
+            if (growth >= server.aof_rewrite_perc) {
                 redisLog(REDIS_NOTICE,"Starting automatic rewriting of AOF on %lld%% growth",growth);
                 rewriteAppendOnlyFileBackground();
             }
          }
     }
 
                 redisLog(REDIS_NOTICE,"Starting automatic rewriting of AOF on %lld%% growth",growth);
                 rewriteAppendOnlyFileBackground();
             }
          }
     }
 
+
+    /* If we postponed an AOF buffer flush, let's try to do it every time the
+     * cron function is called. */
+    if (server.aof_flush_postponed_start) flushAppendOnlyFile(0);
+
     /* Expire a few keys per cycle, only if this is a master.
      * On slaves we wait for DEL operations synthesized by the master
      * in order to guarantee a strict consistency. */
     if (server.masterhost == NULL) activeExpireCycle();
 
     /* Expire a few keys per cycle, only if this is a master.
      * On slaves we wait for DEL operations synthesized by the master
      * in order to guarantee a strict consistency. */
     if (server.masterhost == NULL) activeExpireCycle();
 
+    /* Close clients that need to be closed asynchronous */
+    freeClientsInAsyncFreeQueue();
+
     /* Replication cron function -- used to reconnect to master and
      * to detect transfer failures. */
     if (!(loops % 10)) replicationCron();
     /* Replication cron function -- used to reconnect to master and
      * to detect transfer failures. */
     if (!(loops % 10)) replicationCron();
@@ -729,12 +788,15 @@ void beforeSleep(struct aeEventLoop *eventLoop) {
         c->flags &= ~REDIS_UNBLOCKED;
 
         /* Process remaining data in the input buffer. */
         c->flags &= ~REDIS_UNBLOCKED;
 
         /* Process remaining data in the input buffer. */
-        if (c->querybuf && sdslen(c->querybuf) > 0)
+        if (c->querybuf && sdslen(c->querybuf) > 0) {
+            server.current_client = c;
             processInputBuffer(c);
             processInputBuffer(c);
+            server.current_client = NULL;
+        }
     }
 
     /* Write the AOF buffer on disk */
     }
 
     /* Write the AOF buffer on disk */
-    flushAppendOnlyFile();
+    flushAppendOnlyFile(0);
 }
 
 /* =========================== Server initialization ======================== */
 }
 
 /* =========================== Server initialization ======================== */
@@ -768,6 +830,8 @@ void createSharedObjects(void) {
         "-NOSCRIPT No matching script. Please use EVAL.\r\n"));
     shared.loadingerr = createObject(REDIS_STRING,sdsnew(
         "-LOADING Redis is loading the dataset in memory\r\n"));
         "-NOSCRIPT No matching script. Please use EVAL.\r\n"));
     shared.loadingerr = createObject(REDIS_STRING,sdsnew(
         "-LOADING Redis is loading the dataset in memory\r\n"));
+    shared.slowscripterr = createObject(REDIS_STRING,sdsnew(
+        "-BUSY Redis is busy running a script. You can only call SCRIPT KILL or SHUTDOWN NOSAVE.\r\n"));
     shared.space = createObject(REDIS_STRING,sdsnew(" "));
     shared.colon = createObject(REDIS_STRING,sdsnew(":"));
     shared.plus = createObject(REDIS_STRING,sdsnew("+"));
     shared.space = createObject(REDIS_STRING,sdsnew(" "));
     shared.colon = createObject(REDIS_STRING,sdsnew(":"));
     shared.plus = createObject(REDIS_STRING,sdsnew("+"));
@@ -796,14 +860,17 @@ void createSharedObjects(void) {
 }
 
 void initServerConfig() {
 }
 
 void initServerConfig() {
+    server.arch_bits = (sizeof(long) == 8) ? 64 : 32;
     server.port = REDIS_SERVERPORT;
     server.bindaddr = NULL;
     server.unixsocket = NULL;
     server.port = REDIS_SERVERPORT;
     server.bindaddr = NULL;
     server.unixsocket = NULL;
+    server.unixsocketperm = 0;
     server.ipfd = -1;
     server.sofd = -1;
     server.dbnum = REDIS_DEFAULT_DBNUM;
     server.ipfd = -1;
     server.sofd = -1;
     server.dbnum = REDIS_DEFAULT_DBNUM;
-    server.verbosity = REDIS_VERBOSE;
+    server.verbosity = REDIS_NOTICE;
     server.maxidletime = REDIS_MAXIDLETIME;
     server.maxidletime = REDIS_MAXIDLETIME;
+    server.client_max_querybuf_len = REDIS_MAX_QUERYBUF_LEN;
     server.saveparams = NULL;
     server.loading = 0;
     server.logfile = NULL; /* NULL = log on standard output */
     server.saveparams = NULL;
     server.loading = 0;
     server.logfile = NULL; /* NULL = log on standard output */
@@ -811,23 +878,24 @@ void initServerConfig() {
     server.syslog_ident = zstrdup("redis");
     server.syslog_facility = LOG_LOCAL0;
     server.daemonize = 0;
     server.syslog_ident = zstrdup("redis");
     server.syslog_facility = LOG_LOCAL0;
     server.daemonize = 0;
-    server.appendonly = 0;
-    server.appendfsync = APPENDFSYNC_EVERYSEC;
-    server.no_appendfsync_on_rewrite = 0;
-    server.auto_aofrewrite_perc = REDIS_AUTO_AOFREWRITE_PERC;
-    server.auto_aofrewrite_min_size = REDIS_AUTO_AOFREWRITE_MIN_SIZE;
-    server.auto_aofrewrite_base_size = 0;
-    server.aofrewrite_scheduled = 0;
-    server.lastfsync = time(NULL);
-    server.appendfd = -1;
-    server.appendseldb = -1; /* Make sure the first time will not match */
+    server.aof_state = REDIS_AOF_OFF;
+    server.aof_fsync = AOF_FSYNC_EVERYSEC;
+    server.aof_no_fsync_on_rewrite = 0;
+    server.aof_rewrite_perc = REDIS_AOF_REWRITE_PERC;
+    server.aof_rewrite_min_size = REDIS_AOF_REWRITE_MIN_SIZE;
+    server.aof_rewrite_base_size = 0;
+    server.aof_rewrite_scheduled = 0;
+    server.aof_last_fsync = time(NULL);
+    server.aof_fd = -1;
+    server.aof_selected_db = -1; /* Make sure the first time will not match */
+    server.aof_flush_postponed_start = 0;
     server.pidfile = zstrdup("/var/run/redis.pid");
     server.pidfile = zstrdup("/var/run/redis.pid");
-    server.dbfilename = zstrdup("dump.rdb");
-    server.appendfilename = zstrdup("appendonly.aof");
+    server.rdb_filename = zstrdup("dump.rdb");
+    server.aof_filename = zstrdup("appendonly.aof");
     server.requirepass = NULL;
     server.requirepass = NULL;
-    server.rdbcompression = 1;
+    server.rdb_compression = 1;
     server.activerehashing = 1;
     server.activerehashing = 1;
-    server.maxclients = 0;
+    server.maxclients = REDIS_MAX_CLIENTS;
     server.bpop_blocked_clients = 0;
     server.maxmemory = 0;
     server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
     server.bpop_blocked_clients = 0;
     server.maxmemory = 0;
     server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
@@ -840,9 +908,14 @@ void initServerConfig() {
     server.zset_max_ziplist_entries = REDIS_ZSET_MAX_ZIPLIST_ENTRIES;
     server.zset_max_ziplist_value = REDIS_ZSET_MAX_ZIPLIST_VALUE;
     server.shutdown_asap = 0;
     server.zset_max_ziplist_entries = REDIS_ZSET_MAX_ZIPLIST_ENTRIES;
     server.zset_max_ziplist_value = REDIS_ZSET_MAX_ZIPLIST_VALUE;
     server.shutdown_asap = 0;
+    server.repl_ping_slave_period = REDIS_REPL_PING_SLAVE_PERIOD;
+    server.repl_timeout = REDIS_REPL_TIMEOUT;
     server.cluster_enabled = 0;
     server.cluster.configfile = zstrdup("nodes.conf");
     server.cluster_enabled = 0;
     server.cluster.configfile = zstrdup("nodes.conf");
+    server.lua_caller = NULL;
     server.lua_time_limit = REDIS_LUA_TIME_LIMIT;
     server.lua_time_limit = REDIS_LUA_TIME_LIMIT;
+    server.lua_client = NULL;
+    server.lua_timedout = 0;
 
     updateLRUClock();
     resetServerSaveParams();
 
     updateLRUClock();
     resetServerSaveParams();
@@ -851,16 +924,26 @@ void initServerConfig() {
     appendServerSaveParams(300,100);  /* save after 5 minutes and 100 changes */
     appendServerSaveParams(60,10000); /* save after 1 minute and 10000 changes */
     /* Replication related */
     appendServerSaveParams(300,100);  /* save after 5 minutes and 100 changes */
     appendServerSaveParams(60,10000); /* save after 1 minute and 10000 changes */
     /* Replication related */
-    server.isslave = 0;
     server.masterauth = NULL;
     server.masterhost = NULL;
     server.masterport = 6379;
     server.master = NULL;
     server.masterauth = NULL;
     server.masterhost = NULL;
     server.masterport = 6379;
     server.master = NULL;
-    server.replstate = REDIS_REPL_NONE;
+    server.repl_state = REDIS_REPL_NONE;
     server.repl_syncio_timeout = REDIS_REPL_SYNCIO_TIMEOUT;
     server.repl_serve_stale_data = 1;
     server.repl_down_since = -1;
 
     server.repl_syncio_timeout = REDIS_REPL_SYNCIO_TIMEOUT;
     server.repl_serve_stale_data = 1;
     server.repl_down_since = -1;
 
+    /* Client output buffer limits */
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_NORMAL].hard_limit_bytes = 0;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_NORMAL].soft_limit_bytes = 0;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_NORMAL].soft_limit_seconds = 0;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_SLAVE].hard_limit_bytes = 1024*1024*256;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_SLAVE].soft_limit_bytes = 1024*1024*64;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_SLAVE].soft_limit_seconds = 60;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_PUBSUB].hard_limit_bytes = 1024*1024*32;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_PUBSUB].soft_limit_bytes = 1024*1024*8;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_PUBSUB].soft_limit_seconds = 60;
+
     /* Double constants initialization */
     R_Zero = 0.0;
     R_PosInf = 1.0/R_Zero;
     /* Double constants initialization */
     R_Zero = 0.0;
     R_PosInf = 1.0/R_Zero;
@@ -878,6 +961,49 @@ void initServerConfig() {
     /* Slow log */
     server.slowlog_log_slower_than = REDIS_SLOWLOG_LOG_SLOWER_THAN;
     server.slowlog_max_len = REDIS_SLOWLOG_MAX_LEN;
     /* Slow log */
     server.slowlog_log_slower_than = REDIS_SLOWLOG_LOG_SLOWER_THAN;
     server.slowlog_max_len = REDIS_SLOWLOG_MAX_LEN;
+
+    /* Assert */
+    server.assert_failed = "<no assertion failed>";
+    server.assert_file = "<no file>";
+    server.assert_line = 0;
+    server.bug_report_start = 0;
+}
+
+/* This function will try to raise the max number of open files accordingly to
+ * the configured max number of clients. It will also account for 32 additional
+ * file descriptors as we need a few more for persistence, listening
+ * sockets, log files and so forth.
+ *
+ * If it will not be possible to set the limit accordingly to the configured
+ * max number of clients, the function will do the reverse setting
+ * server.maxclients to the value that we can actually handle. */
+void adjustOpenFilesLimit(void) {
+    rlim_t maxfiles = server.maxclients+32;
+    struct rlimit limit;
+
+    if (maxfiles < 1024) maxfiles = 1024;
+    if (getrlimit(RLIMIT_NOFILE,&limit) == -1) {
+        redisLog(REDIS_WARNING,"Unable to obtain the current NOFILE limit (%s), assuming 1024 and setting the max clients configuration accordingly.",
+            strerror(errno));
+        server.maxclients = 1024-32;
+    } else {
+        rlim_t oldlimit = limit.rlim_cur;
+
+        /* Set the max number of files if the current limit is not enough
+         * for our needs. */
+        if (oldlimit < maxfiles) {
+            limit.rlim_cur = maxfiles;
+            limit.rlim_max = maxfiles;
+            if (setrlimit(RLIMIT_NOFILE,&limit) == -1) {
+                server.maxclients = oldlimit-32;
+                redisLog(REDIS_WARNING,"Unable to set the max number of files limit to %d (%s), setting the max clients configuration to %d.",
+                    (int) maxfiles, strerror(errno), (int) server.maxclients);
+            } else {
+                redisLog(REDIS_NOTICE,"Max number of open files set to %d",
+                    (int) maxfiles);
+            }
+        }
+    }
 }
 
 void initServer() {
 }
 
 void initServer() {
@@ -892,25 +1018,29 @@ void initServer() {
             server.syslog_facility);
     }
 
             server.syslog_facility);
     }
 
+    server.current_client = NULL;
     server.clients = listCreate();
     server.clients = listCreate();
+    server.clients_to_close = listCreate();
     server.slaves = listCreate();
     server.monitors = listCreate();
     server.unblocked_clients = listCreate();
 
     createSharedObjects();
     server.slaves = listCreate();
     server.monitors = listCreate();
     server.unblocked_clients = listCreate();
 
     createSharedObjects();
-    server.el = aeCreateEventLoop();
+    adjustOpenFilesLimit();
+    server.el = aeCreateEventLoop(server.maxclients+1024);
     server.db = zmalloc(sizeof(redisDb)*server.dbnum);
 
     if (server.port != 0) {
         server.ipfd = anetTcpServer(server.neterr,server.port,server.bindaddr);
         if (server.ipfd == ANET_ERR) {
     server.db = zmalloc(sizeof(redisDb)*server.dbnum);
 
     if (server.port != 0) {
         server.ipfd = anetTcpServer(server.neterr,server.port,server.bindaddr);
         if (server.ipfd == ANET_ERR) {
-            redisLog(REDIS_WARNING, "Opening port: %s", server.neterr);
+            redisLog(REDIS_WARNING, "Opening port %d: %s",
+                server.port, server.neterr);
             exit(1);
         }
     }
     if (server.unixsocket != NULL) {
         unlink(server.unixsocket); /* don't care if this fails */
             exit(1);
         }
     }
     if (server.unixsocket != NULL) {
         unlink(server.unixsocket); /* don't care if this fails */
-        server.sofd = anetUnixServer(server.neterr,server.unixsocket);
+        server.sofd = anetUnixServer(server.neterr,server.unixsocket,server.unixsocketperm);
         if (server.sofd == ANET_ERR) {
             redisLog(REDIS_WARNING, "Opening socket: %s", server.neterr);
             exit(1);
         if (server.sofd == ANET_ERR) {
             redisLog(REDIS_WARNING, "Opening socket: %s", server.neterr);
             exit(1);
@@ -932,10 +1062,10 @@ void initServer() {
     listSetFreeMethod(server.pubsub_patterns,freePubsubPattern);
     listSetMatchMethod(server.pubsub_patterns,listMatchPubsubPattern);
     server.cronloops = 0;
     listSetFreeMethod(server.pubsub_patterns,freePubsubPattern);
     listSetMatchMethod(server.pubsub_patterns,listMatchPubsubPattern);
     server.cronloops = 0;
-    server.bgsavechildpid = -1;
-    server.bgrewritechildpid = -1;
-    server.bgrewritebuf = sdsempty();
-    server.aofbuf = sdsempty();
+    server.rdb_child_pid = -1;
+    server.aof_child_pid = -1;
+    server.aof_rewrite_buf = sdsempty();
+    server.aof_buf = sdsempty();
     server.lastsave = time(NULL);
     server.dirty = 0;
     server.stat_numcommands = 0;
     server.lastsave = time(NULL);
     server.dirty = 0;
     server.stat_numcommands = 0;
@@ -947,6 +1077,7 @@ void initServer() {
     server.stat_keyspace_hits = 0;
     server.stat_peak_memory = 0;
     server.stat_fork_time = 0;
     server.stat_keyspace_hits = 0;
     server.stat_peak_memory = 0;
     server.stat_fork_time = 0;
+    server.stat_rejected_conn = 0;
     server.unixtime = time(NULL);
     aeCreateTimeEvent(server.el, 1, serverCron, NULL, NULL);
     if (server.ipfd > 0 && aeCreateFileEvent(server.el,server.ipfd,AE_READABLE,
     server.unixtime = time(NULL);
     aeCreateTimeEvent(server.el, 1, serverCron, NULL, NULL);
     if (server.ipfd > 0 && aeCreateFileEvent(server.el,server.ipfd,AE_READABLE,
@@ -954,19 +1085,30 @@ void initServer() {
     if (server.sofd > 0 && aeCreateFileEvent(server.el,server.sofd,AE_READABLE,
         acceptUnixHandler,NULL) == AE_ERR) oom("creating file event");
 
     if (server.sofd > 0 && aeCreateFileEvent(server.el,server.sofd,AE_READABLE,
         acceptUnixHandler,NULL) == AE_ERR) oom("creating file event");
 
-    if (server.appendonly) {
-        server.appendfd = open(server.appendfilename,O_WRONLY|O_APPEND|O_CREAT,0644);
-        if (server.appendfd == -1) {
+    if (server.aof_state == REDIS_AOF_ON) {
+        server.aof_fd = open(server.aof_filename,
+                               O_WRONLY|O_APPEND|O_CREAT,0644);
+        if (server.aof_fd == -1) {
             redisLog(REDIS_WARNING, "Can't open the append-only file: %s",
                 strerror(errno));
             exit(1);
         }
     }
 
             redisLog(REDIS_WARNING, "Can't open the append-only file: %s",
                 strerror(errno));
             exit(1);
         }
     }
 
+    /* 32 bit instances are limited to 4GB of address space, so if there is
+     * no explicit limit in the user provided configuration we set a limit
+     * at 3.5GB using maxmemory with 'noeviction' policy'. This saves
+     * useless crashes of the Redis instance. */
+    if (server.arch_bits == 32 && server.maxmemory == 0) {
+        redisLog(REDIS_WARNING,"Warning: 32 bit instance detected but no memory limit set. Setting 3.5 GB maxmemory limit with 'noeviction' policy now.");
+        server.maxmemory = 3584LL*(1024*1024); /* 3584 MB = 3.5 GB */
+        server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
+    }
+
     if (server.cluster_enabled) clusterInit();
     scriptingInit();
     slowlogInit();
     if (server.cluster_enabled) clusterInit();
     scriptingInit();
     slowlogInit();
-    srand(time(NULL)^getpid());
+    bioInit();
 }
 
 /* Populates the Redis Command Table starting from the hard coded list
 }
 
 /* Populates the Redis Command Table starting from the hard coded list
@@ -977,8 +1119,25 @@ void populateCommandTable(void) {
 
     for (j = 0; j < numcommands; j++) {
         struct redisCommand *c = redisCommandTable+j;
 
     for (j = 0; j < numcommands; j++) {
         struct redisCommand *c = redisCommandTable+j;
+        char *f = c->sflags;
         int retval;
 
         int retval;
 
+        while(*f != '\0') {
+            switch(*f) {
+            case 'w': c->flags |= REDIS_CMD_WRITE; break;
+            case 'r': c->flags |= REDIS_CMD_READONLY; break;
+            case 'm': c->flags |= REDIS_CMD_DENYOOM; break;
+            case 'a': c->flags |= REDIS_CMD_ADMIN; break;
+            case 'p': c->flags |= REDIS_CMD_PUBSUB; break;
+            case 'f': c->flags |= REDIS_CMD_FORCE_REPLICATION; break;
+            case 's': c->flags |= REDIS_CMD_NOSCRIPT; break;
+            case 'R': c->flags |= REDIS_CMD_RANDOM; break;
+            case 'S': c->flags |= REDIS_CMD_SORT_FOR_SCRIPT; break;
+            default: redisPanic("Unsupported command flag"); break;
+            }
+            f++;
+        }
+
         retval = dictAdd(server.commands, sdsnew(c->name), c);
         assert(retval == DICT_OK);
     }
         retval = dictAdd(server.commands, sdsnew(c->name), c);
         assert(retval == DICT_OK);
     }
@@ -1012,24 +1171,34 @@ struct redisCommand *lookupCommandByCString(char *s) {
 }
 
 /* Call() is the core of Redis execution of a command */
 }
 
 /* Call() is the core of Redis execution of a command */
-void call(redisClient *c) {
+void call(redisClient *c, int flags) {
     long long dirty, start = ustime(), duration;
 
     dirty = server.dirty;
     c->cmd->proc(c);
     dirty = server.dirty-dirty;
     duration = ustime()-start;
     long long dirty, start = ustime(), duration;
 
     dirty = server.dirty;
     c->cmd->proc(c);
     dirty = server.dirty-dirty;
     duration = ustime()-start;
-    c->cmd->microseconds += duration;
-    slowlogPushEntryIfNeeded(c->argv,c->argc,duration);
-    c->cmd->calls++;
-
-    if (server.appendonly && dirty)
-        feedAppendOnlyFile(c->cmd,c->db->id,c->argv,c->argc);
-    if ((dirty || c->cmd->flags & REDIS_CMD_FORCE_REPLICATION) &&
-        listLength(server.slaves))
-        replicationFeedSlaves(server.slaves,c->db->id,c->argv,c->argc);
-    if (listLength(server.monitors))
-        replicationFeedMonitors(server.monitors,c->db->id,c->argv,c->argc);
+
+    /* When EVAL is called loading the AOF we don't want commands called
+     * from Lua to go into the slowlog or to populate statistics. */
+    if (server.loading && c->flags & REDIS_LUA_CLIENT)
+        flags &= ~(REDIS_CALL_SLOWLOG | REDIS_CALL_STATS);
+
+    if (flags & REDIS_CALL_SLOWLOG)
+        slowlogPushEntryIfNeeded(c->argv,c->argc,duration);
+    if (flags & REDIS_CALL_STATS) {
+        c->cmd->microseconds += duration;
+        c->cmd->calls++;
+    }
+    if (flags & REDIS_CALL_PROPAGATE) {
+        if (server.aof_state != REDIS_AOF_OFF && dirty > 0)
+            feedAppendOnlyFile(c->cmd,c->db->id,c->argv,c->argc);
+        if ((dirty > 0 || c->cmd->flags & REDIS_CMD_FORCE_REPLICATION) &&
+            listLength(server.slaves))
+            replicationFeedSlaves(server.slaves,c->db->id,c->argv,c->argc);
+        if (listLength(server.monitors))
+            replicationFeedMonitors(server.monitors,c->db->id,c->argv,c->argc);
+    }
     server.stat_numcommands++;
 }
 
     server.stat_numcommands++;
 }
 
@@ -1054,7 +1223,7 @@ int processCommand(redisClient *c) {
 
     /* Now lookup the command and check ASAP about trivial error conditions
      * such as wrong arity, bad command name and so forth. */
 
     /* Now lookup the command and check ASAP about trivial error conditions
      * such as wrong arity, bad command name and so forth. */
-    c->cmd = lookupCommand(c->argv[0]->ptr);
+    c->cmd = c->lastcmd = lookupCommand(c->argv[0]->ptr);
     if (!c->cmd) {
         addReplyErrorFormat(c,"unknown command '%s'",
             (char*)c->argv[0]->ptr);
     if (!c->cmd) {
         addReplyErrorFormat(c,"unknown command '%s'",
             (char*)c->argv[0]->ptr);
@@ -1122,7 +1291,7 @@ int processCommand(redisClient *c) {
 
     /* Only allow INFO and SLAVEOF when slave-serve-stale-data is no and
      * we are a slave with a broken link with master. */
 
     /* Only allow INFO and SLAVEOF when slave-serve-stale-data is no and
      * we are a slave with a broken link with master. */
-    if (server.masterhost && server.replstate != REDIS_REPL_CONNECTED &&
+    if (server.masterhost && server.repl_state != REDIS_REPL_CONNECTED &&
         server.repl_serve_stale_data == 0 &&
         c->cmd->proc != infoCommand && c->cmd->proc != slaveofCommand)
     {
         server.repl_serve_stale_data == 0 &&
         c->cmd->proc != infoCommand && c->cmd->proc != slaveofCommand)
     {
@@ -1137,6 +1306,19 @@ int processCommand(redisClient *c) {
         return REDIS_OK;
     }
 
         return REDIS_OK;
     }
 
+    /* Lua script too slow? Only allow SHUTDOWN NOSAVE and SCRIPT KILL. */
+    if (server.lua_timedout &&
+        !(c->cmd->proc != shutdownCommand &&
+          c->argc == 2 &&
+          tolower(((char*)c->argv[1]->ptr)[0]) == 'n') &&
+        !(c->cmd->proc == scriptCommand &&
+          c->argc == 2 &&
+          tolower(((char*)c->argv[1]->ptr)[0]) == 'k'))
+    {
+        addReply(c, shared.slowscripterr);
+        return REDIS_OK;
+    }
+
     /* Exec the command */
     if (c->flags & REDIS_MULTI &&
         c->cmd->proc != execCommand && c->cmd->proc != discardCommand &&
     /* Exec the command */
     if (c->flags & REDIS_MULTI &&
         c->cmd->proc != execCommand && c->cmd->proc != discardCommand &&
@@ -1145,39 +1327,42 @@ int processCommand(redisClient *c) {
         queueMultiCommand(c);
         addReply(c,shared.queued);
     } else {
         queueMultiCommand(c);
         addReply(c,shared.queued);
     } else {
-        call(c);
+        call(c,REDIS_CALL_FULL);
     }
     return REDIS_OK;
 }
 
 /*================================== Shutdown =============================== */
 
     }
     return REDIS_OK;
 }
 
 /*================================== Shutdown =============================== */
 
-int prepareForShutdown() {
+int prepareForShutdown(int flags) {
+    int save = flags & REDIS_SHUTDOWN_SAVE;
+    int nosave = flags & REDIS_SHUTDOWN_NOSAVE;
+
     redisLog(REDIS_WARNING,"User requested shutdown...");
     /* Kill the saving child if there is a background saving in progress.
        We want to avoid race conditions, for instance our saving child may
        overwrite the synchronous saving did by SHUTDOWN. */
     redisLog(REDIS_WARNING,"User requested shutdown...");
     /* Kill the saving child if there is a background saving in progress.
        We want to avoid race conditions, for instance our saving child may
        overwrite the synchronous saving did by SHUTDOWN. */
-    if (server.bgsavechildpid != -1) {
+    if (server.rdb_child_pid != -1) {
         redisLog(REDIS_WARNING,"There is a child saving an .rdb. Killing it!");
         redisLog(REDIS_WARNING,"There is a child saving an .rdb. Killing it!");
-        kill(server.bgsavechildpid,SIGKILL);
-        rdbRemoveTempFile(server.bgsavechildpid);
+        kill(server.rdb_child_pid,SIGKILL);
+        rdbRemoveTempFile(server.rdb_child_pid);
     }
     }
-    if (server.appendonly) {
+    if (server.aof_state != REDIS_AOF_OFF) {
         /* Kill the AOF saving child as the AOF we already have may be longer
          * but contains the full dataset anyway. */
         /* Kill the AOF saving child as the AOF we already have may be longer
          * but contains the full dataset anyway. */
-        if (server.bgrewritechildpid != -1) {
+        if (server.aof_child_pid != -1) {
             redisLog(REDIS_WARNING,
                 "There is a child rewriting the AOF. Killing it!");
             redisLog(REDIS_WARNING,
                 "There is a child rewriting the AOF. Killing it!");
-            kill(server.bgrewritechildpid,SIGKILL);
+            kill(server.aof_child_pid,SIGKILL);
         }
         /* Append only file: fsync() the AOF and exit */
         redisLog(REDIS_NOTICE,"Calling fsync() on the AOF file.");
         }
         /* Append only file: fsync() the AOF and exit */
         redisLog(REDIS_NOTICE,"Calling fsync() on the AOF file.");
-        aof_fsync(server.appendfd);
+        aof_fsync(server.aof_fd);
     }
     }
-    if (server.saveparamslen > 0) {
+    if ((server.saveparamslen > 0 && !nosave) || save) {
         redisLog(REDIS_NOTICE,"Saving the final RDB snapshot before exiting.");
         /* Snapshotting. Perform a SYNC SAVE and exit */
         redisLog(REDIS_NOTICE,"Saving the final RDB snapshot before exiting.");
         /* Snapshotting. Perform a SYNC SAVE and exit */
-        if (rdbSave(server.dbfilename) != REDIS_OK) {
+        if (rdbSave(server.rdb_filename) != REDIS_OK) {
             /* 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
             /* 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
@@ -1194,6 +1379,10 @@ int prepareForShutdown() {
     /* Close the listening sockets. Apparently this allows faster restarts. */
     if (server.ipfd != -1) close(server.ipfd);
     if (server.sofd != -1) close(server.sofd);
     /* Close the listening sockets. Apparently this allows faster restarts. */
     if (server.ipfd != -1) close(server.ipfd);
     if (server.sofd != -1) close(server.sofd);
+    if (server.unixsocket) {
+        redisLog(REDIS_NOTICE,"Removing the unix socket file.");
+        unlink(server.unixsocket); /* don't care if this fails */
+    }
 
     redisLog(REDIS_WARNING,"Redis is now ready to exit, bye bye...");
     return REDIS_OK;
 
     redisLog(REDIS_WARNING,"Redis is now ready to exit, bye bye...");
     return REDIS_OK;
@@ -1202,7 +1391,9 @@ int prepareForShutdown() {
 /*================================== Commands =============================== */
 
 void authCommand(redisClient *c) {
 /*================================== Commands =============================== */
 
 void authCommand(redisClient *c) {
-    if (!server.requirepass || !strcmp(c->argv[1]->ptr, server.requirepass)) {
+    if (!server.requirepass) {
+        addReplyError(c,"Client sent AUTH, but no password is set");
+    } else if (!strcmp(c->argv[1]->ptr, server.requirepass)) {
       c->authenticated = 1;
       addReply(c,shared.ok);
     } else {
       c->authenticated = 1;
       addReply(c,shared.ok);
     } else {
@@ -1269,8 +1460,9 @@ sds genRedisInfoString(char *section) {
             "redis_version:%s\r\n"
             "redis_git_sha1:%s\r\n"
             "redis_git_dirty:%d\r\n"
             "redis_version:%s\r\n"
             "redis_git_sha1:%s\r\n"
             "redis_git_dirty:%d\r\n"
-            "arch_bits:%s\r\n"
+            "arch_bits:%d\r\n"
             "multiplexing_api:%s\r\n"
             "multiplexing_api:%s\r\n"
+            "gcc_version:%d.%d.%d\r\n"
             "process_id:%ld\r\n"
             "tcp_port:%d\r\n"
             "uptime_in_seconds:%ld\r\n"
             "process_id:%ld\r\n"
             "tcp_port:%d\r\n"
             "uptime_in_seconds:%ld\r\n"
@@ -1279,8 +1471,13 @@ sds genRedisInfoString(char *section) {
             REDIS_VERSION,
             redisGitSHA1(),
             strtol(redisGitDirty(),NULL,10) > 0,
             REDIS_VERSION,
             redisGitSHA1(),
             strtol(redisGitDirty(),NULL,10) > 0,
-            (sizeof(long) == 8) ? "64" : "32",
+            server.arch_bits,
             aeGetApiName(),
             aeGetApiName(),
+#ifdef __GNUC__
+            __GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__,
+#else
+            0,0,0,
+#endif
             (long) getpid(),
             server.port,
             uptime,
             (long) getpid(),
             server.port,
             uptime,
@@ -1293,7 +1490,7 @@ sds genRedisInfoString(char *section) {
         if (sections++) info = sdscat(info,"\r\n");
         info = sdscatprintf(info,
             "# Clients\r\n"
         if (sections++) info = sdscat(info,"\r\n");
         info = sdscatprintf(info,
             "# Clients\r\n"
-            "connected_clients:%d\r\n"
+            "connected_clients:%lu\r\n"
             "client_longest_output_list:%lu\r\n"
             "client_biggest_input_buf:%lu\r\n"
             "blocked_clients:%d\r\n",
             "client_longest_output_list:%lu\r\n"
             "client_biggest_input_buf:%lu\r\n"
             "blocked_clients:%d\r\n",
@@ -1343,20 +1540,24 @@ sds genRedisInfoString(char *section) {
             "last_save_time:%ld\r\n"
             "bgrewriteaof_in_progress:%d\r\n",
             server.loading,
             "last_save_time:%ld\r\n"
             "bgrewriteaof_in_progress:%d\r\n",
             server.loading,
-            server.appendonly,
+            server.aof_state != REDIS_AOF_OFF,
             server.dirty,
             server.dirty,
-            server.bgsavechildpid != -1,
+            server.rdb_child_pid != -1,
             server.lastsave,
             server.lastsave,
-            server.bgrewritechildpid != -1);
+            server.aof_child_pid != -1);
 
 
-        if (server.appendonly) {
+        if (server.aof_state != REDIS_AOF_OFF) {
             info = sdscatprintf(info,
                 "aof_current_size:%lld\r\n"
                 "aof_base_size:%lld\r\n"
             info = sdscatprintf(info,
                 "aof_current_size:%lld\r\n"
                 "aof_base_size:%lld\r\n"
-                "aof_pending_rewrite:%d\r\n",
-                (long long) server.appendonly_current_size,
-                (long long) server.auto_aofrewrite_base_size,
-                server.aofrewrite_scheduled);
+                "aof_pending_rewrite:%d\r\n"
+                "aof_buffer_length:%zu\r\n"
+                "aof_pending_bio_fsync:%llu\r\n",
+                (long long) server.aof_current_size,
+                (long long) server.aof_rewrite_base_size,
+                server.aof_rewrite_scheduled,
+                sdslen(server.aof_buf),
+                bioPendingJobsOfType(REDIS_BIO_AOF_FSYNC));
         }
 
         if (server.loading) {
         }
 
         if (server.loading) {
@@ -1398,15 +1599,17 @@ sds genRedisInfoString(char *section) {
             "# Stats\r\n"
             "total_connections_received:%lld\r\n"
             "total_commands_processed:%lld\r\n"
             "# Stats\r\n"
             "total_connections_received:%lld\r\n"
             "total_commands_processed:%lld\r\n"
+            "rejected_connections:%lld\r\n"
             "expired_keys:%lld\r\n"
             "evicted_keys:%lld\r\n"
             "keyspace_hits:%lld\r\n"
             "keyspace_misses:%lld\r\n"
             "pubsub_channels:%ld\r\n"
             "expired_keys:%lld\r\n"
             "evicted_keys:%lld\r\n"
             "keyspace_hits:%lld\r\n"
             "keyspace_misses:%lld\r\n"
             "pubsub_channels:%ld\r\n"
-            "pubsub_patterns:%u\r\n"
+            "pubsub_patterns:%lu\r\n"
             "latest_fork_usec:%lld\r\n",
             server.stat_numconnections,
             server.stat_numcommands,
             "latest_fork_usec:%lld\r\n",
             server.stat_numconnections,
             server.stat_numcommands,
+            server.stat_rejected_conn,
             server.stat_expiredkeys,
             server.stat_evictedkeys,
             server.stat_keyspace_hits,
             server.stat_expiredkeys,
             server.stat_evictedkeys,
             server.stat_keyspace_hits,
@@ -1432,14 +1635,14 @@ sds genRedisInfoString(char *section) {
                 "master_sync_in_progress:%d\r\n"
                 ,server.masterhost,
                 server.masterport,
                 "master_sync_in_progress:%d\r\n"
                 ,server.masterhost,
                 server.masterport,
-                (server.replstate == REDIS_REPL_CONNECTED) ?
+                (server.repl_state == REDIS_REPL_CONNECTED) ?
                     "up" : "down",
                 server.master ?
                 ((int)(time(NULL)-server.master->lastinteraction)) : -1,
                     "up" : "down",
                 server.master ?
                 ((int)(time(NULL)-server.master->lastinteraction)) : -1,
-                server.replstate == REDIS_REPL_TRANSFER
+                server.repl_state == REDIS_REPL_TRANSFER
             );
 
             );
 
-            if (server.replstate == REDIS_REPL_TRANSFER) {
+            if (server.repl_state == REDIS_REPL_TRANSFER) {
                 info = sdscatprintf(info,
                     "master_sync_left_bytes:%ld\r\n"
                     "master_sync_last_io_seconds_ago:%d\r\n"
                 info = sdscatprintf(info,
                     "master_sync_left_bytes:%ld\r\n"
                     "master_sync_last_io_seconds_ago:%d\r\n"
@@ -1448,15 +1651,46 @@ sds genRedisInfoString(char *section) {
                 );
             }
 
                 );
             }
 
-            if (server.replstate != REDIS_REPL_CONNECTED) {
+            if (server.repl_state != REDIS_REPL_CONNECTED) {
                 info = sdscatprintf(info,
                     "master_link_down_since_seconds:%ld\r\n",
                     (long)time(NULL)-server.repl_down_since);
             }
         }
         info = sdscatprintf(info,
                 info = sdscatprintf(info,
                     "master_link_down_since_seconds:%ld\r\n",
                     (long)time(NULL)-server.repl_down_since);
             }
         }
         info = sdscatprintf(info,
-            "connected_slaves:%d\r\n",
+            "connected_slaves:%lu\r\n",
             listLength(server.slaves));
             listLength(server.slaves));
+        if (listLength(server.slaves)) {
+            int slaveid = 0;
+            listNode *ln;
+            listIter li;
+
+            listRewind(server.slaves,&li);
+            while((ln = listNext(&li))) {
+                redisClient *slave = listNodeValue(ln);
+                char *state = NULL;
+                char ip[32];
+                int port;
+
+                if (anetPeerToString(slave->fd,ip,&port) == -1) continue;
+                switch(slave->replstate) {
+                case REDIS_REPL_WAIT_BGSAVE_START:
+                case REDIS_REPL_WAIT_BGSAVE_END:
+                    state = "wait_bgsave";
+                    break;
+                case REDIS_REPL_SEND_BULK:
+                    state = "send_bulk";
+                    break;
+                case REDIS_REPL_ONLINE:
+                    state = "online";
+                    break;
+                }
+                if (state == NULL) continue;
+                info = sdscatprintf(info,"slave%d:%s,%d,%s\r\n",
+                    slaveid,ip,port,state);
+                slaveid++;
+            }
+        }
     }
 
     /* CPU */
     }
 
     /* CPU */
@@ -1468,10 +1702,10 @@ sds genRedisInfoString(char *section) {
         "used_cpu_user:%.2f\r\n"
         "used_cpu_sys_children:%.2f\r\n"
         "used_cpu_user_children:%.2f\r\n",
         "used_cpu_user:%.2f\r\n"
         "used_cpu_sys_children:%.2f\r\n"
         "used_cpu_user_children:%.2f\r\n",
-        (float)self_ru.ru_utime.tv_sec+(float)self_ru.ru_utime.tv_usec/1000000,
         (float)self_ru.ru_stime.tv_sec+(float)self_ru.ru_stime.tv_usec/1000000,
         (float)self_ru.ru_stime.tv_sec+(float)self_ru.ru_stime.tv_usec/1000000,
-        (float)c_ru.ru_utime.tv_sec+(float)c_ru.ru_utime.tv_usec/1000000,
-        (float)c_ru.ru_stime.tv_sec+(float)c_ru.ru_stime.tv_usec/1000000);
+        (float)self_ru.ru_utime.tv_sec+(float)self_ru.ru_utime.tv_usec/1000000,
+        (float)c_ru.ru_stime.tv_sec+(float)c_ru.ru_stime.tv_usec/1000000,
+        (float)c_ru.ru_utime.tv_sec+(float)c_ru.ru_utime.tv_usec/1000000);
     }
 
     /* cmdtime */
     }
 
     /* cmdtime */
@@ -1583,7 +1817,7 @@ void freeMemoryIfNeeded(void) {
                 server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_RANDOM)
             {
                 de = dictGetRandomKey(dict);
                 server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_RANDOM)
             {
                 de = dictGetRandomKey(dict);
-                bestkey = dictGetEntryKey(de);
+                bestkey = dictGetKey(de);
             }
 
             /* volatile-lru and allkeys-lru policy */
             }
 
             /* volatile-lru and allkeys-lru policy */
@@ -1596,12 +1830,12 @@ void freeMemoryIfNeeded(void) {
                     robj *o;
 
                     de = dictGetRandomKey(dict);
                     robj *o;
 
                     de = dictGetRandomKey(dict);
-                    thiskey = dictGetEntryKey(de);
+                    thiskey = dictGetKey(de);
                     /* When policy is volatile-lru we need an additonal lookup
                      * to locate the real key, as dict is set to db->expires. */
                     if (server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_LRU)
                         de = dictFind(db->dict, thiskey);
                     /* When policy is volatile-lru we need an additonal lookup
                      * to locate the real key, as dict is set to db->expires. */
                     if (server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_LRU)
                         de = dictFind(db->dict, thiskey);
-                    o = dictGetEntryVal(de);
+                    o = dictGetVal(de);
                     thisval = estimateObjectIdleTime(o);
 
                     /* Higher idle time is better candidate for deletion */
                     thisval = estimateObjectIdleTime(o);
 
                     /* Higher idle time is better candidate for deletion */
@@ -1619,8 +1853,8 @@ void freeMemoryIfNeeded(void) {
                     long thisval;
 
                     de = dictGetRandomKey(dict);
                     long thisval;
 
                     de = dictGetRandomKey(dict);
-                    thiskey = dictGetEntryKey(de);
-                    thisval = (long) dictGetEntryVal(de);
+                    thiskey = dictGetKey(de);
+                    thisval = (long) dictGetVal(de);
 
                     /* Expire sooner (minor expire unix timestamp) is better
                      * candidate for deletion */
 
                     /* Expire sooner (minor expire unix timestamp) is better
                      * candidate for deletion */
@@ -1702,8 +1936,16 @@ void version() {
 }
 
 void usage() {
 }
 
 void usage() {
-    fprintf(stderr,"Usage: ./redis-server [/path/to/redis.conf]\n");
+    fprintf(stderr,"Usage: ./redis-server [/path/to/redis.conf] [options]\n");
     fprintf(stderr,"       ./redis-server - (read config from stdin)\n");
     fprintf(stderr,"       ./redis-server - (read config from stdin)\n");
+    fprintf(stderr,"       ./redis-server -v or --version\n");
+    fprintf(stderr,"       ./redis-server -h or --help\n\n");
+    fprintf(stderr,"Examples:\n");
+    fprintf(stderr,"       ./redis-server (run the server with default conf)\n");
+    fprintf(stderr,"       ./redis-server /etc/redis/6379.conf\n");
+    fprintf(stderr,"       ./redis-server --port 7777\n");
+    fprintf(stderr,"       ./redis-server --port 7777 --slaveof 127.0.0.1 8888\n");
+    fprintf(stderr,"       ./redis-server /etc/myredis.conf --loglevel verbose\n");
     exit(1);
 }
 
     exit(1);
 }
 
@@ -1724,18 +1966,79 @@ void redisAsciiArt(void) {
     zfree(buf);
 }
 
     zfree(buf);
 }
 
+static void sigtermHandler(int sig) {
+    REDIS_NOTUSED(sig);
+
+    redisLog(REDIS_WARNING,"Received SIGTERM, scheduling shutdown...");
+    server.shutdown_asap = 1;
+}
+
+void setupSignalHandlers(void) {
+    struct sigaction act;
+
+    /* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction is used.
+     * Otherwise, sa_handler is used. */
+    sigemptyset(&act.sa_mask);
+    act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND;
+    act.sa_handler = sigtermHandler;
+    sigaction(SIGTERM, &act, NULL);
+
+#ifdef HAVE_BACKTRACE
+    sigemptyset(&act.sa_mask);
+    act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
+    act.sa_sigaction = sigsegvHandler;
+    sigaction(SIGSEGV, &act, NULL);
+    sigaction(SIGBUS, &act, NULL);
+    sigaction(SIGFPE, &act, NULL);
+    sigaction(SIGILL, &act, NULL);
+#endif
+    return;
+}
+
 int main(int argc, char **argv) {
     long long start;
 int main(int argc, char **argv) {
     long long start;
+    struct timeval tv;
 
 
+    /* We need to initialize our libraries, and the server configuration. */
+    zmalloc_enable_thread_safeness();
+    srand(time(NULL)^getpid());
+    gettimeofday(&tv,NULL);
+    dictSetHashFunctionSeed(tv.tv_sec^tv.tv_usec^getpid());
     initServerConfig();
     initServerConfig();
-    if (argc == 2) {
+
+    if (argc >= 2) {
+        int j = 1; /* First option to parse in argv[] */
+        sds options = sdsempty();
+        char *configfile = NULL;
+
+        /* Handle special options --help and --version */
         if (strcmp(argv[1], "-v") == 0 ||
             strcmp(argv[1], "--version") == 0) version();
         if (strcmp(argv[1], "-v") == 0 ||
             strcmp(argv[1], "--version") == 0) version();
-        if (strcmp(argv[1], "--help") == 0) usage();
+        if (strcmp(argv[1], "--help") == 0 ||
+            strcmp(argv[1], "-h") == 0) usage();
+        /* First argument is the config file name? */
+        if (argv[j][0] != '-' || argv[j][1] != '-')
+            configfile = argv[j++];
+        /* All the other options are parsed and conceptually appended to the
+         * configuration file. For instance --port 6380 will generate the
+         * string "port 6380\n" to be parsed after the actual file name
+         * is parsed, if any. */
+        while(j != argc) {
+            if (argv[j][0] == '-' && argv[j][1] == '-') {
+                /* Option name */
+                if (sdslen(options)) options = sdscat(options,"\n");
+                options = sdscat(options,argv[j]+2);
+                options = sdscat(options," ");
+            } else {
+                /* Option argument */
+                options = sdscatrepr(options,argv[j],strlen(argv[j]));
+                options = sdscat(options," ");
+            }
+            j++;
+        }
         resetServerSaveParams();
         resetServerSaveParams();
-        loadServerConfig(argv[1]);
-    } else if ((argc > 2)) {
-        usage();
+        loadServerConfig(configfile,options);
+        sdsfree(options);
     } 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'");
     }
@@ -1743,17 +2046,22 @@ int main(int argc, char **argv) {
     initServer();
     if (server.daemonize) createPidFile();
     redisAsciiArt();
     initServer();
     if (server.daemonize) createPidFile();
     redisAsciiArt();
-    redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION);
+    redisLog(REDIS_WARNING,"Server started, Redis version " REDIS_VERSION);
 #ifdef __linux__
     linuxOvercommitMemoryWarning();
 #endif
     start = ustime();
 #ifdef __linux__
     linuxOvercommitMemoryWarning();
 #endif
     start = ustime();
-    if (server.appendonly) {
-        if (loadAppendOnlyFile(server.appendfilename) == REDIS_OK)
+    if (server.aof_state == REDIS_AOF_ON) {
+        if (loadAppendOnlyFile(server.aof_filename) == REDIS_OK)
             redisLog(REDIS_NOTICE,"DB loaded from append only file: %.3f seconds",(float)(ustime()-start)/1000000);
     } else {
             redisLog(REDIS_NOTICE,"DB loaded from append only file: %.3f seconds",(float)(ustime()-start)/1000000);
     } else {
-        if (rdbLoad(server.dbfilename) == REDIS_OK)
-            redisLog(REDIS_NOTICE,"DB loaded from disk: %.3f seconds",(float)(ustime()-start)/1000000);
+        if (rdbLoad(server.rdb_filename) == REDIS_OK) {
+            redisLog(REDIS_NOTICE,"DB loaded from disk: %.3f seconds",
+                (float)(ustime()-start)/1000000);
+        } else if (errno != ENOENT) {
+            redisLog(REDIS_WARNING,"Fatal error loading the DB. Exiting.");
+            exit(1);
+        }
     }
     if (server.ipfd > 0)
         redisLog(REDIS_NOTICE,"The server is now ready to accept connections on port %d", server.port);
     }
     if (server.ipfd > 0)
         redisLog(REDIS_NOTICE,"The server is now ready to accept connections on port %d", server.port);
@@ -1765,103 +2073,4 @@ int main(int argc, char **argv) {
     return 0;
 }
 
     return 0;
 }
 
-#ifdef HAVE_BACKTRACE
-static void *getMcontextEip(ucontext_t *uc) {
-#if defined(__FreeBSD__)
-    return (void*) uc->uc_mcontext.mc_eip;
-#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;
-  #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;
-  #else
-    return (void*) uc->uc_mcontext->__ss.__eip;
-  #endif
-#elif defined(__i386__)
-    return (void*) uc->uc_mcontext.gregs[14]; /* Linux 32 */
-#elif defined(__X86_64__) || defined(__x86_64__)
-    return (void*) uc->uc_mcontext.gregs[16]; /* Linux 64 */
-#elif defined(__ia64__) /* Linux IA64 */
-    return (void*) uc->uc_mcontext.sc_ip;
-#else
-    return NULL;
-#endif
-}
-
-static void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
-    void *trace[100];
-    char **messages = NULL;
-    int i, trace_size = 0;
-    ucontext_t *uc = (ucontext_t*) secret;
-    sds infostring;
-    struct sigaction act;
-    REDIS_NOTUSED(info);
-
-    redisLog(REDIS_WARNING,
-        "======= Ooops! Redis %s got signal: -%d- =======", REDIS_VERSION, sig);
-    infostring = genRedisInfoString("all");
-    redisLogRaw(REDIS_WARNING, 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 */
-    if (getMcontextEip(uc) != NULL) {
-        trace[1] = getMcontextEip(uc);
-    }
-    messages = backtrace_symbols(trace, trace_size);
-
-    for (i=1; i<trace_size; ++i)
-        redisLog(REDIS_WARNING,"%s", messages[i]);
-
-    /* free(messages); Don't call free() with possibly corrupted memory. */
-    if (server.daemonize) unlink(server.pidfile);
-
-    /* Make sure we exit with the right signal at the end. So for instance
-     * the core will be dumped if enabled. */
-    sigemptyset (&act.sa_mask);
-    /* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction
-     * is used. Otherwise, sa_handler is used */
-    act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND;
-    act.sa_handler = SIG_DFL;
-    sigaction (sig, &act, NULL);
-    kill(getpid(),sig);
-}
-#endif /* HAVE_BACKTRACE */
-
-static void sigtermHandler(int sig) {
-    REDIS_NOTUSED(sig);
-
-    redisLog(REDIS_WARNING,"Received SIGTERM, scheduling shutdown...");
-    server.shutdown_asap = 1;
-}
-
-void setupSignalHandlers(void) {
-    struct sigaction act;
-
-    /* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction is used.
-     * Otherwise, sa_handler is used. */
-    sigemptyset(&act.sa_mask);
-    act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND;
-    act.sa_handler = sigtermHandler;
-    sigaction(SIGTERM, &act, NULL);
-
-#ifdef HAVE_BACKTRACE
-    sigemptyset(&act.sa_mask);
-    act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
-    act.sa_sigaction = sigsegvHandler;
-    sigaction(SIGSEGV, &act, NULL);
-    sigaction(SIGBUS, &act, NULL);
-    sigaction(SIGFPE, &act, NULL);
-    sigaction(SIGILL, &act, NULL);
-#endif
-    return;
-}
-
 /* The End */
 /* The End */
Redis += OpenLDAP MDB