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all the stack trace related functions are now in debug.c. Now Redis dumps registers...
[redis.git] / src / redis.c
diff --git a/src/redis.c b/src/redis.c
index 9978eab5637818886f2594d5e8a70d09d4d416c0..3914003d04b3b0c5987a82c9e8e2f155101bbbd9 100644 (file)
--- a/src/redis.c
+++ b/src/redis.c
@@ -28,11 +28,8 @@
  */
 
 #include "redis.h"
  */
 
 #include "redis.h"
-
-#ifdef HAVE_BACKTRACE
-#include <execinfo.h>
-#include <ucontext.h>
-#endif /* HAVE_BACKTRACE */
+#include "slowlog.h"
+#include "bio.h"
 
 #include <time.h>
 #include <signal.h>
 
 #include <time.h>
 #include <signal.h>
@@ -50,13 +47,13 @@
 #include <limits.h>
 #include <float.h>
 #include <math.h>
 #include <limits.h>
 #include <float.h>
 #include <math.h>
-#include <pthread.h>
+#include <sys/resource.h>
 
 /* Our shared "common" objects */
 
 struct sharedObjectsStruct shared;
 
 
 /* Our shared "common" objects */
 
 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. */
 
@@ -67,144 +64,229 @@ 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;
-struct redisCommand readonlyCommandTable[] = {
-    {"get",getCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"set",setCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,0,0,0},
-    {"setnx",setnxCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,0,0,0},
-    {"setex",setexCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,0,0,0},
-    {"append",appendCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"substr",substrCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"del",delCommand,-2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"exists",existsCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"incr",incrCommand,2,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"decr",decrCommand,2,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"mget",mgetCommand,-2,REDIS_CMD_INLINE,NULL,1,-1,1},
-    {"rpush",rpushCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"lpush",lpushCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"rpushx",rpushxCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"lpushx",lpushxCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"linsert",linsertCommand,5,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"rpop",rpopCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"lpop",lpopCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"brpop",brpopCommand,-3,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"blpop",blpopCommand,-3,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"llen",llenCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"lindex",lindexCommand,3,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"lset",lsetCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"lrange",lrangeCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"ltrim",ltrimCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"lrem",lremCommand,4,REDIS_CMD_BULK,NULL,1,1,1},
-    {"rpoplpush",rpoplpushcommand,3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,2,1},
-    {"sadd",saddCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"srem",sremCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"smove",smoveCommand,4,REDIS_CMD_BULK,NULL,1,2,1},
-    {"sismember",sismemberCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"scard",scardCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"spop",spopCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"srandmember",srandmemberCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"sinter",sinterCommand,-2,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,-1,1},
-    {"sinterstore",sinterstoreCommand,-3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,2,-1,1},
-    {"sunion",sunionCommand,-2,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,-1,1},
-    {"sunionstore",sunionstoreCommand,-3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,2,-1,1},
-    {"sdiff",sdiffCommand,-2,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,-1,1},
-    {"sdiffstore",sdiffstoreCommand,-3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,2,-1,1},
-    {"smembers",sinterCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zadd",zaddCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"zincrby",zincrbyCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"zrem",zremCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"zremrangebyscore",zremrangebyscoreCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zremrangebyrank",zremrangebyrankCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zunionstore",zunionstoreCommand,-4,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,zunionInterBlockClientOnSwappedKeys,0,0,0},
-    {"zinterstore",zinterstoreCommand,-4,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,zunionInterBlockClientOnSwappedKeys,0,0,0},
-    {"zrange",zrangeCommand,-4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zrangebyscore",zrangebyscoreCommand,-4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zcount",zcountCommand,4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zrevrange",zrevrangeCommand,-4,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zcard",zcardCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"zscore",zscoreCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"zrank",zrankCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"zrevrank",zrevrankCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"hset",hsetCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"hsetnx",hsetnxCommand,4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"hget",hgetCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"hmset",hmsetCommand,-4,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"hmget",hmgetCommand,-3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"hincrby",hincrbyCommand,4,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"hdel",hdelCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"hlen",hlenCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"hkeys",hkeysCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"hvals",hvalsCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"hgetall",hgetallCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"hexists",hexistsCommand,3,REDIS_CMD_BULK,NULL,1,1,1},
-    {"incrby",incrbyCommand,3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"decrby",decrbyCommand,3,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"getset",getsetCommand,3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"mset",msetCommand,-3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,-1,2},
-    {"msetnx",msetnxCommand,-3,REDIS_CMD_BULK|REDIS_CMD_DENYOOM,NULL,1,-1,2},
-    {"randomkey",randomkeyCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"select",selectCommand,2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"move",moveCommand,3,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"rename",renameCommand,3,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"renamenx",renamenxCommand,3,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"expire",expireCommand,3,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"expireat",expireatCommand,3,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"keys",keysCommand,2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"dbsize",dbsizeCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"auth",authCommand,2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"ping",pingCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"echo",echoCommand,2,REDIS_CMD_BULK,NULL,0,0,0},
-    {"save",saveCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"bgsave",bgsaveCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"bgrewriteaof",bgrewriteaofCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"shutdown",shutdownCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"lastsave",lastsaveCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"type",typeCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"multi",multiCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"exec",execCommand,1,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,execBlockClientOnSwappedKeys,0,0,0},
-    {"discard",discardCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"sync",syncCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"flushdb",flushdbCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"flushall",flushallCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"sort",sortCommand,-2,REDIS_CMD_INLINE|REDIS_CMD_DENYOOM,NULL,1,1,1},
-    {"info",infoCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"monitor",monitorCommand,1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"ttl",ttlCommand,2,REDIS_CMD_INLINE,NULL,1,1,1},
-    {"slaveof",slaveofCommand,3,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"debug",debugCommand,-2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"config",configCommand,-2,REDIS_CMD_BULK,NULL,0,0,0},
-    {"subscribe",subscribeCommand,-2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"unsubscribe",unsubscribeCommand,-1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"psubscribe",psubscribeCommand,-2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"punsubscribe",punsubscribeCommand,-1,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"publish",publishCommand,3,REDIS_CMD_BULK|REDIS_CMD_FORCE_REPLICATION,NULL,0,0,0},
-    {"watch",watchCommand,-2,REDIS_CMD_INLINE,NULL,0,0,0},
-    {"unwatch",unwatchCommand,1,REDIS_CMD_INLINE,NULL,0,0,0}
+
+/* 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. */
+struct redisCommand redisCommandTable[] = {
+    {"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,"r",0,NULL,1,-1,1,0,0},
+    {"sinterstore",sinterstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
+    {"sunion",sunionCommand,-2,"r",0,NULL,1,-1,1,0,0},
+    {"sunionstore",sunionstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
+    {"sdiff",sdiffCommand,-2,"r",0,NULL,1,-1,1,0,0},
+    {"sdiffstore",sdiffstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
+    {"smembers",sinterCommand,2,"r",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,"r",0,NULL,1,1,1,0,0},
+    {"hvals",hvalsCommand,2,"r",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,"r",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,"wm",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 ============================ */
 
-void redisLog(int level, const char *fmt, ...) {
-    va_list ap;
+/* Low level logging. To use only for very big messages, otherwise
+ * redisLog() is to prefer. */
+void redisLogRaw(int level, const char *msg) {
+    const int syslogLevelMap[] = { LOG_DEBUG, LOG_INFO, LOG_NOTICE, LOG_WARNING };
+    const char *c = ".-*#";
+    time_t now = time(NULL);
     FILE *fp;
     FILE *fp;
-    char *c = ".-*#";
     char buf[64];
     char buf[64];
-    time_t now;
+    int rawmode = (level & REDIS_LOG_RAW);
 
 
+    level &= 0xff; /* clear flags */
     if (level < server.verbosity) return;
 
     fp = (server.logfile == NULL) ? stdout : fopen(server.logfile,"a");
     if (!fp) return;
 
     if (level < server.verbosity) return;
 
     fp = (server.logfile == NULL) ? stdout : fopen(server.logfile,"a");
     if (!fp) return;
 
-    va_start(ap, fmt);
-    now = time(NULL);
-    strftime(buf,64,"%d %b %H:%M:%S",localtime(&now));
-    fprintf(fp,"[%d] %s %c ",(int)getpid(),buf,c[level]);
-    vfprintf(fp, fmt, ap);
-    fprintf(fp,"\n");
+    if (rawmode) {
+        fprintf(fp,"%s",msg);
+    } else {
+        strftime(buf,sizeof(buf),"%d %b %H:%M:%S",localtime(&now));
+        fprintf(fp,"[%d] %s %c %s\n",(int)getpid(),buf,c[level],msg);
+    }
     fflush(fp);
     fflush(fp);
-    va_end(ap);
 
     if (server.logfile) fclose(fp);
 
     if (server.logfile) fclose(fp);
+
+    if (server.syslog_enabled) syslog(syslogLevelMap[level], "%s", msg);
+}
+
+/* Like redisLogRaw() but with printf-alike support. This is the funciton that
+ * is used across the code. The raw version is only used in order to dump
+ * the INFO output on crash. */
+void redisLog(int level, const char *fmt, ...) {
+    va_list ap;
+    char msg[REDIS_MAX_LOGMSG_LEN];
+
+    if ((level&0xff) < server.verbosity) return;
+
+    va_start(ap, fmt);
+    vsnprintf(msg, sizeof(msg), fmt, ap);
+    va_end(ap);
+
+    redisLogRaw(level,msg);
 }
 
 /* Redis generally does not try to recover from out of memory conditions
 }
 
 /* Redis generally does not try to recover from out of memory conditions
@@ -218,6 +300,22 @@ void oom(const char *msg) {
     abort();
 }
 
     abort();
 }
 
+/* Return the UNIX time in microseconds */
+long long ustime(void) {
+    struct timeval tv;
+    long long ust;
+
+    gettimeofday(&tv, NULL);
+    ust = ((long long)tv.tv_sec)*1000000;
+    ust += tv.tv_usec;
+    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
@@ -248,6 +346,15 @@ int dictSdsKeyCompare(void *privdata, const void *key1,
     return memcmp(key1, key2, l1) == 0;
 }
 
     return memcmp(key1, key2, l1) == 0;
 }
 
+/* A case insensitive version used for the command lookup table. */
+int dictSdsKeyCaseCompare(void *privdata, const void *key1,
+        const void *key2)
+{
+    DICT_NOTUSED(privdata);
+
+    return strcasecmp(key1, key2) == 0;
+}
+
 void dictRedisObjectDestructor(void *privdata, void *val)
 {
     DICT_NOTUSED(privdata);
 void dictRedisObjectDestructor(void *privdata, void *val)
 {
     DICT_NOTUSED(privdata);
@@ -279,6 +386,10 @@ unsigned int dictSdsHash(const void *key) {
     return dictGenHashFunction((unsigned char*)key, sdslen((char*)key));
 }
 
     return dictGenHashFunction((unsigned char*)key, sdslen((char*)key));
 }
 
+unsigned int dictSdsCaseHash(const void *key) {
+    return dictGenCaseHashFunction((unsigned char*)key, sdslen((char*)key));
+}
+
 int dictEncObjKeyCompare(void *privdata, const void *key1,
         const void *key2)
 {
 int dictEncObjKeyCompare(void *privdata, const void *key1,
         const void *key2)
 {
@@ -320,7 +431,7 @@ unsigned int dictEncObjHash(const void *key) {
     }
 }
 
     }
 }
 
-/* Sets type */
+/* Sets type hash table */
 dictType setDictType = {
     dictEncObjHash,            /* hash function */
     NULL,                      /* key dup */
 dictType setDictType = {
     dictEncObjHash,            /* hash function */
     NULL,                      /* key dup */
@@ -337,7 +448,7 @@ dictType zsetDictType = {
     NULL,                      /* val dup */
     dictEncObjKeyCompare,      /* key compare */
     dictRedisObjectDestructor, /* key destructor */
     NULL,                      /* val dup */
     dictEncObjKeyCompare,      /* key compare */
     dictRedisObjectDestructor, /* key destructor */
-    dictVanillaFree            /* val destructor of malloc(sizeof(double)) */
+    NULL                       /* val destructor */
 };
 
 /* Db->dict, keys are sds strings, vals are Redis objects. */
 };
 
 /* Db->dict, keys are sds strings, vals are Redis objects. */
@@ -360,6 +471,16 @@ dictType keyptrDictType = {
     NULL                       /* val destructor */
 };
 
     NULL                       /* val destructor */
 };
 
+/* Command table. sds string -> command struct pointer. */
+dictType commandTableDictType = {
+    dictSdsCaseHash,           /* hash function */
+    NULL,                      /* key dup */
+    NULL,                      /* val dup */
+    dictSdsKeyCaseCompare,     /* key compare */
+    dictSdsDestructor,         /* key destructor */
+    NULL                       /* val destructor */
+};
+
 /* Hash type hash table (note that small hashes are represented with zimpaps) */
 dictType hashDictType = {
     dictEncObjHash,             /* hash function */
 /* Hash type hash table (note that small hashes are represented with zimpaps) */
 dictType hashDictType = {
     dictEncObjHash,             /* hash function */
@@ -382,6 +503,17 @@ dictType keylistDictType = {
     dictListDestructor          /* val destructor */
 };
 
     dictListDestructor          /* val destructor */
 };
 
+/* Cluster nodes hash table, mapping nodes addresses 1.2.3.4:6379 to
+ * clusterNode structures. */
+dictType clusterNodesDictType = {
+    dictSdsHash,                /* hash function */
+    NULL,                       /* key dup */
+    NULL,                       /* val dup */
+    dictSdsKeyCompare,          /* key compare */
+    dictSdsDestructor,          /* key destructor */
+    NULL                        /* val destructor */
+};
+
 int htNeedsResize(dict *dict) {
     long long size, used;
 
 int htNeedsResize(dict *dict) {
     long long size, used;
 
@@ -426,7 +558,7 @@ 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();
@@ -434,8 +566,54 @@ void updateDictResizePolicy(void) {
 
 /* ======================= Cron: called every 100 ms ======================== */
 
 
 /* ======================= Cron: called every 100 ms ======================== */
 
+/* Try to expire a few timed out keys. The algorithm used is adaptive and
+ * will use few CPU cycles if there are few expiring keys, otherwise
+ * it will get more aggressive to avoid that too much memory is used by
+ * keys that can be removed from the keyspace. */
+void activeExpireCycle(void) {
+    int j;
+
+    for (j = 0; j < server.dbnum; j++) {
+        int expired;
+        redisDb *db = server.db+j;
+
+        /* Continue to expire if at the end of the cycle more than 25%
+         * of the keys were expired. */
+        do {
+            long num = dictSize(db->expires);
+            long long now = mstime();
+
+            expired = 0;
+            if (num > REDIS_EXPIRELOOKUPS_PER_CRON)
+                num = REDIS_EXPIRELOOKUPS_PER_CRON;
+            while (num--) {
+                dictEntry *de;
+                long long t;
+
+                if ((de = dictGetRandomKey(db->expires)) == NULL) break;
+                t = dictGetSignedIntegerVal(de);
+                if (now > t) {
+                    sds key = dictGetKey(de);
+                    robj *keyobj = createStringObject(key,sdslen(key));
+
+                    propagateExpire(db,keyobj);
+                    dbDelete(db,keyobj);
+                    decrRefCount(keyobj);
+                    expired++;
+                    server.stat_expiredkeys++;
+                }
+            }
+        } while (expired > REDIS_EXPIRELOOKUPS_PER_CRON/4);
+    }
+}
+
+void updateLRUClock(void) {
+    server.lruclock = (time(NULL)/REDIS_LRU_CLOCK_RESOLUTION) &
+                                                REDIS_LRU_CLOCK_MAX;
+}
+
 int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
 int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
-    int j, loops = server.cronloops++;
+    int j, loops = server.cronloops;
     REDIS_NOTUSED(eventLoop);
     REDIS_NOTUSED(id);
     REDIS_NOTUSED(clientData);
     REDIS_NOTUSED(eventLoop);
     REDIS_NOTUSED(id);
     REDIS_NOTUSED(clientData);
@@ -445,24 +623,29 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
      * in objects at every object access, and accuracy is not needed.
      * To access a global var is faster than calling time(NULL) */
     server.unixtime = time(NULL);
      * in objects at every object access, and accuracy is not needed.
      * To access a global var is faster than calling time(NULL) */
     server.unixtime = time(NULL);
-    /* We have just 21 bits per object for LRU information.
-     * So we use an (eventually wrapping) LRU clock with minutes resolution.
+
+    /* We have just 22 bits per object for LRU information.
+     * So we use an (eventually wrapping) LRU clock with 10 seconds resolution.
+     * 2^22 bits with 10 seconds resoluton is more or less 1.5 years.
      *
      *
-     * When we need to select what object to swap, we compute the minimum
-     * time distance between the current lruclock and the object last access
-     * lruclock info. Even if clocks will wrap on overflow, there is
-     * the interesting property that we are sure that at least
-     * ABS(A-B) minutes passed between current time and timestamp B.
+     * Note that even if this will wrap after 1.5 years it's not a problem,
+     * everything will still work but just some object will appear younger
+     * to Redis. But for this to happen a given object should never be touched
+     * for 1.5 years.
      *
      *
-     * This is not precise but we don't need at all precision, but just
-     * something statistically reasonable.
+     * Note that you can change the resolution altering the
+     * REDIS_LRU_CLOCK_RESOLUTION define.
      */
      */
-    server.lruclock = (time(NULL)/60)&((1<<21)-1);
+    updateLRUClock();
+
+    /* Record the max memory used since the server was started. */
+    if (zmalloc_used_memory() > server.stat_peak_memory)
+        server.stat_peak_memory = zmalloc_used_memory();
 
     /* 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");
     }
 
@@ -485,7 +668,7 @@ 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();
     }
@@ -499,26 +682,40 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
     }
 
     /* Close connections of timedout clients */
     }
 
     /* Close connections of timedout clients */
-    if ((server.maxidletime && !(loops % 100)) || server.blpop_blocked_clients)
+    if ((server.maxidletime && !(loops % 100)) || server.bpop_blocked_clients)
         closeTimedoutClients();
 
         closeTimedoutClients();
 
-    /* Check if a background saving or AOF rewrite in progress terminated */
-    if (server.bgsavechildpid != -1 || server.bgrewritechildpid != -1) {
+    /* Start a scheduled AOF rewrite if this was requested by the user while
+     * a BGSAVE was in progress. */
+    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. */
+    if (server.rdb_child_pid != -1 || server.aof_child_pid != -1) {
         int statloc;
         pid_t pid;
 
         if ((pid = wait3(&statloc,WNOHANG,NULL)) != 0) {
         int statloc;
         pid_t pid;
 
         if ((pid = wait3(&statloc,WNOHANG,NULL)) != 0) {
-            if (pid == server.bgsavechildpid) {
-                backgroundSaveDoneHandler(statloc);
+            int exitcode = WEXITSTATUS(statloc);
+            int bysignal = 0;
+            
+            if (WIFSIGNALED(statloc)) bysignal = WTERMSIG(statloc);
+
+            if (pid == server.rdb_child_pid) {
+                backgroundSaveDoneHandler(exitcode,bysignal);
             } else {
             } else {
-                backgroundRewriteDoneHandler(statloc);
+                backgroundRewriteDoneHandler(exitcode,bysignal);
             }
             updateDictResizePolicy();
         }
     } else {
             }
             updateDictResizePolicy();
         }
     } else {
-        /* If there is not a background saving in progress check if
-         * we have to save now */
          time_t now = time(NULL);
          time_t now = time(NULL);
+
+        /* If there is not a background saving/rewrite in progress check if
+         * we have to save/rewrite now */
          for (j = 0; j < server.saveparamslen; j++) {
             struct saveparam *sp = server.saveparams+j;
 
          for (j = 0; j < server.saveparamslen; j++) {
             struct saveparam *sp = server.saveparams+j;
 
@@ -526,82 +723,45 @@ 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;
             }
          }
                 break;
             }
          }
+
+         /* Trigger an AOF rewrite if needed */
+         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.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();
+            }
+         }
     }
 
     }
 
-    /* Try to expire a few timed out keys. The algorithm used is adaptive and
-     * will use few CPU cycles if there are few expiring keys, otherwise
-     * it will get more aggressive to avoid that too much memory is used by
-     * keys that can be removed from the keyspace. */
-    for (j = 0; j < server.dbnum; j++) {
-        int expired;
-        redisDb *db = server.db+j;
 
 
-        /* Continue to expire if at the end of the cycle more than 25%
-         * of the keys were expired. */
-        do {
-            long num = dictSize(db->expires);
-            time_t now = time(NULL);
+    /* 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);
 
 
-            expired = 0;
-            if (num > REDIS_EXPIRELOOKUPS_PER_CRON)
-                num = REDIS_EXPIRELOOKUPS_PER_CRON;
-            while (num--) {
-                dictEntry *de;
-                time_t t;
+    /* 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();
 
 
-                if ((de = dictGetRandomKey(db->expires)) == NULL) break;
-                t = (time_t) dictGetEntryVal(de);
-                if (now > t) {
-                    sds key = dictGetEntryKey(de);
-                    robj *keyobj = createStringObject(key,sdslen(key));
-
-                    dbDelete(db,keyobj);
-                    decrRefCount(keyobj);
-                    expired++;
-                    server.stat_expiredkeys++;
-                }
-            }
-        } while (expired > REDIS_EXPIRELOOKUPS_PER_CRON/4);
-    }
+    /* Replication cron function -- used to reconnect to master and
+     * to detect transfer failures. */
+    if (!(loops % 10)) replicationCron();
 
 
-    /* Swap a few keys on disk if we are over the memory limit and VM
-     * is enbled. Try to free objects from the free list first. */
-    if (vmCanSwapOut()) {
-        while (server.vm_enabled && zmalloc_used_memory() >
-                server.vm_max_memory)
-        {
-            int retval;
-
-            if (tryFreeOneObjectFromFreelist() == REDIS_OK) continue;
-            retval = (server.vm_max_threads == 0) ?
-                        vmSwapOneObjectBlocking() :
-                        vmSwapOneObjectThreaded();
-            if (retval == REDIS_ERR && !(loops % 300) &&
-                zmalloc_used_memory() >
-                (server.vm_max_memory+server.vm_max_memory/10))
-            {
-                redisLog(REDIS_WARNING,"WARNING: vm-max-memory limit exceeded by more than 10%% but unable to swap more objects out!");
-            }
-            /* Note that when using threade I/O we free just one object,
-             * because anyway when the I/O thread in charge to swap this
-             * object out will finish, the handler of completed jobs
-             * will try to swap more objects if we are still out of memory. */
-            if (retval == REDIS_ERR || server.vm_max_threads > 0) break;
-        }
-    }
+    /* Run other sub-systems specific cron jobs */
+    if (server.cluster_enabled && !(loops % 10)) clusterCron();
 
 
-    /* Check if we should connect to a MASTER */
-    if (server.replstate == REDIS_REPL_CONNECT && !(loops % 10)) {
-        redisLog(REDIS_NOTICE,"Connecting to MASTER...");
-        if (syncWithMaster() == REDIS_OK) {
-            redisLog(REDIS_NOTICE,"MASTER <-> SLAVE sync succeeded");
-            if (server.appendonly) rewriteAppendOnlyFileBackground();
-        }
-    }
+    server.cronloops++;
     return 100;
 }
 
     return 100;
 }
 
@@ -610,34 +770,27 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
  * for ready file descriptors. */
 void beforeSleep(struct aeEventLoop *eventLoop) {
     REDIS_NOTUSED(eventLoop);
  * for ready file descriptors. */
 void beforeSleep(struct aeEventLoop *eventLoop) {
     REDIS_NOTUSED(eventLoop);
-
-    /* Awake clients that got all the swapped keys they requested */
-    if (server.vm_enabled && listLength(server.io_ready_clients)) {
-        listIter li;
-        listNode *ln;
-
-        listRewind(server.io_ready_clients,&li);
-        while((ln = listNext(&li))) {
-            redisClient *c = ln->value;
-            struct redisCommand *cmd;
-
-            /* Resume the client. */
-            listDelNode(server.io_ready_clients,ln);
-            c->flags &= (~REDIS_IO_WAIT);
-            server.vm_blocked_clients--;
-            aeCreateFileEvent(server.el, c->fd, AE_READABLE,
-                readQueryFromClient, c);
-            cmd = lookupCommand(c->argv[0]->ptr);
-            redisAssert(cmd != NULL);
-            call(c,cmd);
-            resetClient(c);
-            /* There may be more data to process in the input buffer. */
-            if (c->querybuf && sdslen(c->querybuf) > 0)
-                processInputBuffer(c);
+    listNode *ln;
+    redisClient *c;
+
+    /* Try to process pending commands for clients that were just unblocked. */
+    while (listLength(server.unblocked_clients)) {
+        ln = listFirst(server.unblocked_clients);
+        redisAssert(ln != NULL);
+        c = ln->value;
+        listDelNode(server.unblocked_clients,ln);
+        c->flags &= ~REDIS_UNBLOCKED;
+
+        /* Process remaining data in the input buffer. */
+        if (c->querybuf && sdslen(c->querybuf) > 0) {
+            server.current_client = 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 ======================== */
@@ -667,6 +820,12 @@ void createSharedObjects(void) {
         "-ERR source and destination objects are the same\r\n"));
     shared.outofrangeerr = createObject(REDIS_STRING,sdsnew(
         "-ERR index out of range\r\n"));
         "-ERR source and destination objects are the same\r\n"));
     shared.outofrangeerr = createObject(REDIS_STRING,sdsnew(
         "-ERR index out of range\r\n"));
+    shared.noscripterr = createObject(REDIS_STRING,sdsnew(
+        "-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("+"));
@@ -695,61 +854,138 @@ void createSharedObjects(void) {
 }
 
 void initServerConfig() {
 }
 
 void initServerConfig() {
-    server.dbnum = REDIS_DEFAULT_DBNUM;
     server.port = REDIS_SERVERPORT;
     server.port = REDIS_SERVERPORT;
-    server.verbosity = REDIS_VERBOSE;
+    server.bindaddr = NULL;
+    server.unixsocket = NULL;
+    server.unixsocketperm = 0;
+    server.ipfd = -1;
+    server.sofd = -1;
+    server.dbnum = REDIS_DEFAULT_DBNUM;
+    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.saveparams = NULL;
+    server.loading = 0;
     server.logfile = NULL; /* NULL = log on standard output */
     server.logfile = NULL; /* NULL = log on standard output */
-    server.bindaddr = NULL;
-    server.glueoutputbuf = 1;
+    server.syslog_enabled = 0;
+    server.syslog_ident = zstrdup("redis");
+    server.syslog_facility = LOG_LOCAL0;
     server.daemonize = 0;
     server.daemonize = 0;
-    server.appendonly = 0;
-    server.appendfsync = APPENDFSYNC_EVERYSEC;
-    server.no_appendfsync_on_rewrite = 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.blpop_blocked_clients = 0;
+    server.maxclients = REDIS_MAX_CLIENTS;
+    server.bpop_blocked_clients = 0;
     server.maxmemory = 0;
     server.maxmemory = 0;
-    server.vm_enabled = 0;
-    server.vm_swap_file = zstrdup("/tmp/redis-%p.vm");
-    server.vm_page_size = 256;          /* 256 bytes per page */
-    server.vm_pages = 1024*1024*100;    /* 104 millions of pages */
-    server.vm_max_memory = 1024LL*1024*1024*1; /* 1 GB of RAM */
-    server.vm_max_threads = 4;
-    server.vm_blocked_clients = 0;
+    server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
+    server.maxmemory_samples = 3;
     server.hash_max_zipmap_entries = REDIS_HASH_MAX_ZIPMAP_ENTRIES;
     server.hash_max_zipmap_value = REDIS_HASH_MAX_ZIPMAP_VALUE;
     server.list_max_ziplist_entries = REDIS_LIST_MAX_ZIPLIST_ENTRIES;
     server.list_max_ziplist_value = REDIS_LIST_MAX_ZIPLIST_VALUE;
     server.hash_max_zipmap_entries = REDIS_HASH_MAX_ZIPMAP_ENTRIES;
     server.hash_max_zipmap_value = REDIS_HASH_MAX_ZIPMAP_VALUE;
     server.list_max_ziplist_entries = REDIS_LIST_MAX_ZIPLIST_ENTRIES;
     server.list_max_ziplist_value = REDIS_LIST_MAX_ZIPLIST_VALUE;
+    server.set_max_intset_entries = REDIS_SET_MAX_INTSET_ENTRIES;
+    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.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.lua_caller = NULL;
+    server.lua_time_limit = REDIS_LUA_TIME_LIMIT;
+    server.lua_client = NULL;
+    server.lua_timedout = 0;
+
+    updateLRUClock();
     resetServerSaveParams();
 
     appendServerSaveParams(60*60,1);  /* save after 1 hour and 1 change */
     appendServerSaveParams(300,100);  /* save after 5 minutes and 100 changes */
     appendServerSaveParams(60,10000); /* save after 1 minute and 10000 changes */
     /* Replication related */
     resetServerSaveParams();
 
     appendServerSaveParams(60*60,1);  /* save after 1 hour and 1 change */
     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;
 
     /* Double constants initialization */
     R_Zero = 0.0;
     R_PosInf = 1.0/R_Zero;
     R_NegInf = -1.0/R_Zero;
     R_Nan = R_Zero/R_Zero;
 
     /* Double constants initialization */
     R_Zero = 0.0;
     R_PosInf = 1.0/R_Zero;
     R_NegInf = -1.0/R_Zero;
     R_Nan = R_Zero/R_Zero;
+
+    /* Command table -- we intiialize it here as it is part of the
+     * initial configuration, since command names may be changed via
+     * redis.conf using the rename-command directive. */
+    server.commands = dictCreate(&commandTableDictType,NULL);
+    populateCommandTable();
+    server.delCommand = lookupCommandByCString("del");
+    server.multiCommand = lookupCommandByCString("multi");
+    
+    /* 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() {
@@ -757,24 +993,42 @@ void initServer() {
 
     signal(SIGHUP, SIG_IGN);
     signal(SIGPIPE, SIG_IGN);
 
     signal(SIGHUP, SIG_IGN);
     signal(SIGPIPE, SIG_IGN);
-    setupSigSegvAction();
+    setupSignalHandlers();
 
 
-    server.mainthread = pthread_self();
-    server.devnull = fopen("/dev/null","w");
-    if (server.devnull == NULL) {
-        redisLog(REDIS_WARNING, "Can't open /dev/null: %s", server.neterr);
-        exit(1);
+    if (server.syslog_enabled) {
+        openlog(server.syslog_ident, LOG_PID | LOG_NDELAY | LOG_NOWAIT,
+            server.syslog_facility);
     }
     }
+
+    server.current_client = NULL;
     server.clients = listCreate();
     server.slaves = listCreate();
     server.monitors = listCreate();
     server.clients = listCreate();
     server.slaves = listCreate();
     server.monitors = listCreate();
-    server.objfreelist = listCreate();
+    server.unblocked_clients = listCreate();
+
     createSharedObjects();
     createSharedObjects();
-    server.el = aeCreateEventLoop();
+    adjustOpenFilesLimit();
+    server.el = aeCreateEventLoop(server.maxclients+1024);
     server.db = zmalloc(sizeof(redisDb)*server.dbnum);
     server.db = zmalloc(sizeof(redisDb)*server.dbnum);
-    server.fd = anetTcpServer(server.neterr, server.port, server.bindaddr);
-    if (server.fd == -1) {
-        redisLog(REDIS_WARNING, "Opening TCP port: %s", server.neterr);
+
+    if (server.port != 0) {
+        server.ipfd = anetTcpServer(server.neterr,server.port,server.bindaddr);
+        if (server.ipfd == ANET_ERR) {
+            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 */
+        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.ipfd < 0 && server.sofd < 0) {
+        redisLog(REDIS_WARNING, "Configured to not listen anywhere, exiting.");
         exit(1);
     }
     for (j = 0; j < server.dbnum; j++) {
         exit(1);
     }
     for (j = 0; j < server.dbnum; j++) {
@@ -782,8 +1036,6 @@ void initServer() {
         server.db[j].expires = dictCreate(&keyptrDictType,NULL);
         server.db[j].blocking_keys = dictCreate(&keylistDictType,NULL);
         server.db[j].watched_keys = dictCreate(&keylistDictType,NULL);
         server.db[j].expires = dictCreate(&keyptrDictType,NULL);
         server.db[j].blocking_keys = dictCreate(&keylistDictType,NULL);
         server.db[j].watched_keys = dictCreate(&keylistDictType,NULL);
-        if (server.vm_enabled)
-            server.db[j].io_keys = dictCreate(&keylistDictType,NULL);
         server.db[j].id = j;
     }
     server.pubsub_channels = dictCreate(&keylistDictType,NULL);
         server.db[j].id = j;
     }
     server.pubsub_channels = dictCreate(&keylistDictType,NULL);
@@ -791,71 +1043,120 @@ 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.stat_numconnections = 0;
     server.stat_expiredkeys = 0;
     server.lastsave = time(NULL);
     server.dirty = 0;
     server.stat_numcommands = 0;
     server.stat_numconnections = 0;
     server.stat_expiredkeys = 0;
+    server.stat_evictedkeys = 0;
     server.stat_starttime = time(NULL);
     server.stat_starttime = time(NULL);
+    server.stat_keyspace_misses = 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);
     server.unixtime = time(NULL);
     aeCreateTimeEvent(server.el, 1, serverCron, NULL, NULL);
-    if (aeCreateFileEvent(server.el, server.fd, AE_READABLE,
-        acceptHandler, 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.ipfd > 0 && aeCreateFileEvent(server.el,server.ipfd,AE_READABLE,
+        acceptTcpHandler,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.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);
         }
     }
 
-    if (server.vm_enabled) vmInit();
+    if (server.cluster_enabled) clusterInit();
+    scriptingInit();
+    slowlogInit();
+    bioInit();
+    srand(time(NULL)^getpid());
+
 }
 
 }
 
-int qsortRedisCommands(const void *r1, const void *r2) {
-    return strcasecmp(
-        ((struct redisCommand*)r1)->name,
-        ((struct redisCommand*)r2)->name);
+/* Populates the Redis Command Table starting from the hard coded list
+ * we have on top of redis.c file. */
+void populateCommandTable(void) {
+    int j;
+    int numcommands = sizeof(redisCommandTable)/sizeof(struct redisCommand);
+
+    for (j = 0; j < numcommands; j++) {
+        struct redisCommand *c = redisCommandTable+j;
+        char *f = c->sflags;
+        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;
+            default: redisPanic("Unsupported command flag"); break;
+            }
+            f++;
+        }
+
+        retval = dictAdd(server.commands, sdsnew(c->name), c);
+        assert(retval == DICT_OK);
+    }
 }
 
 }
 
-void sortCommandTable() {
-    /* Copy and sort the read-only version of the command table */
-    commandTable = (struct redisCommand*)malloc(sizeof(readonlyCommandTable));
-    memcpy(commandTable,readonlyCommandTable,sizeof(readonlyCommandTable));
-    qsort(commandTable,
-        sizeof(readonlyCommandTable)/sizeof(struct redisCommand),
-        sizeof(struct redisCommand),qsortRedisCommands);
+void resetCommandTableStats(void) {
+    int numcommands = sizeof(redisCommandTable)/sizeof(struct redisCommand);
+    int j;
+
+    for (j = 0; j < numcommands; j++) {
+        struct redisCommand *c = redisCommandTable+j;
+
+        c->microseconds = 0;
+        c->calls = 0;
+    }
 }
 
 /* ====================== Commands lookup and execution ===================== */
 
 }
 
 /* ====================== Commands lookup and execution ===================== */
 
-struct redisCommand *lookupCommand(char *name) {
-    struct redisCommand tmp = {name,NULL,0,0,NULL,0,0,0};
-    return bsearch(
-        &tmp,
-        commandTable,
-        sizeof(readonlyCommandTable)/sizeof(struct redisCommand),
-        sizeof(struct redisCommand),
-        qsortRedisCommands);
+struct redisCommand *lookupCommand(sds name) {
+    return dictFetchValue(server.commands, name);
+}
+
+struct redisCommand *lookupCommandByCString(char *s) {
+    struct redisCommand *cmd;
+    sds name = sdsnew(s);
+
+    cmd = dictFetchValue(server.commands, name);
+    sdsfree(name);
+    return cmd;
 }
 
 /* Call() is the core of Redis execution of a command */
 }
 
 /* Call() is the core of Redis execution of a command */
-void call(redisClient *c, struct redisCommand *cmd) {
-    long long dirty;
+void call(redisClient *c) {
+    long long dirty, start = ustime(), duration;
 
     dirty = server.dirty;
 
     dirty = server.dirty;
-    cmd->proc(c);
+    c->cmd->proc(c);
     dirty = server.dirty-dirty;
     dirty = server.dirty-dirty;
-
-    if (server.appendonly && dirty)
-        feedAppendOnlyFile(cmd,c->db->id,c->argv,c->argc);
-    if ((dirty || cmd->flags & REDIS_CMD_FORCE_REPLICATION) &&
+    duration = ustime()-start;
+    c->cmd->microseconds += duration;
+    slowlogPushEntryIfNeeded(c->argv,c->argc,duration);
+    c->cmd->calls++;
+
+    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))
         listLength(server.slaves))
         replicationFeedSlaves(server.slaves,c->db->id,c->argv,c->argc);
     if (listLength(server.monitors))
@@ -872,224 +1173,194 @@ void call(redisClient *c, struct redisCommand *cmd) {
  * and other operations can be performed by the caller. Otherwise
  * if 0 is returned the client was destroied (i.e. after QUIT). */
 int processCommand(redisClient *c) {
  * and other operations can be performed by the caller. Otherwise
  * if 0 is returned the client was destroied (i.e. after QUIT). */
 int processCommand(redisClient *c) {
-    struct redisCommand *cmd;
-
-    /* Free some memory if needed (maxmemory setting) */
-    if (server.maxmemory) freeMemoryIfNeeded();
-
-    /* Handle the multi bulk command type. This is an alternative protocol
-     * supported by Redis in order to receive commands that are composed of
-     * multiple binary-safe "bulk" arguments. The latency of processing is
-     * a bit higher but this allows things like multi-sets, so if this
-     * protocol is used only for MSET and similar commands this is a big win. */
-    if (c->multibulk == 0 && c->argc == 1 && ((char*)(c->argv[0]->ptr))[0] == '*') {
-        c->multibulk = atoi(((char*)c->argv[0]->ptr)+1);
-        if (c->multibulk <= 0) {
-            resetClient(c);
-            return 1;
-        } else {
-            decrRefCount(c->argv[c->argc-1]);
-            c->argc--;
-            return 1;
-        }
-    } else if (c->multibulk) {
-        if (c->bulklen == -1) {
-            if (((char*)c->argv[0]->ptr)[0] != '$') {
-                addReplySds(c,sdsnew("-ERR multi bulk protocol error\r\n"));
-                resetClient(c);
-                return 1;
-            } else {
-                int bulklen = atoi(((char*)c->argv[0]->ptr)+1);
-                decrRefCount(c->argv[0]);
-                if (bulklen < 0 || bulklen > 1024*1024*1024) {
-                    c->argc--;
-                    addReplySds(c,sdsnew("-ERR invalid bulk write count\r\n"));
-                    resetClient(c);
-                    return 1;
-                }
-                c->argc--;
-                c->bulklen = bulklen+2; /* add two bytes for CR+LF */
-                return 1;
-            }
-        } else {
-            c->mbargv = zrealloc(c->mbargv,(sizeof(robj*))*(c->mbargc+1));
-            c->mbargv[c->mbargc] = c->argv[0];
-            c->mbargc++;
-            c->argc--;
-            c->multibulk--;
-            if (c->multibulk == 0) {
-                robj **auxargv;
-                int auxargc;
-
-                /* Here we need to swap the multi-bulk argc/argv with the
-                 * normal argc/argv of the client structure. */
-                auxargv = c->argv;
-                c->argv = c->mbargv;
-                c->mbargv = auxargv;
-
-                auxargc = c->argc;
-                c->argc = c->mbargc;
-                c->mbargc = auxargc;
-
-                /* We need to set bulklen to something different than -1
-                 * in order for the code below to process the command without
-                 * to try to read the last argument of a bulk command as
-                 * a special argument. */
-                c->bulklen = 0;
-                /* continue below and process the command */
-            } else {
-                c->bulklen = -1;
-                return 1;
-            }
-        }
-    }
-    /* -- end of multi bulk commands processing -- */
-
-    /* The QUIT command is handled as a special case. Normal command
-     * procs are unable to close the client connection safely */
+    /* The QUIT command is handled separately. Normal command procs will
+     * go through checking for replication and QUIT will cause trouble
+     * when FORCE_REPLICATION is enabled and would be implemented in
+     * a regular command proc. */
     if (!strcasecmp(c->argv[0]->ptr,"quit")) {
     if (!strcasecmp(c->argv[0]->ptr,"quit")) {
-        freeClient(c);
-        return 0;
+        addReply(c,shared.ok);
+        c->flags |= REDIS_CLOSE_AFTER_REPLY;
+        return REDIS_ERR;
     }
 
     /* Now lookup the command and check ASAP about trivial error conditions
     }
 
     /* Now lookup the command and check ASAP about trivial error conditions
-     * such wrong arity, bad command name and so forth. */
-    cmd = lookupCommand(c->argv[0]->ptr);
-    if (!cmd) {
-        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)) {
-        addReplySds(c,
-            sdscatprintf(sdsempty(),
-                "-ERR wrong number of arguments for '%s' command\r\n",
-                cmd->name));
-        resetClient(c);
-        return 1;
-    } else if (cmd->flags & REDIS_CMD_BULK && c->bulklen == -1) {
-        /* This is a bulk command, we have to read the last argument yet. */
-        int bulklen = atoi(c->argv[c->argc-1]->ptr);
-
-        decrRefCount(c->argv[c->argc-1]);
-        if (bulklen < 0 || bulklen > 1024*1024*1024) {
-            c->argc--;
-            addReplySds(c,sdsnew("-ERR invalid bulk write count\r\n"));
-            resetClient(c);
-            return 1;
-        }
-        c->argc--;
-        c->bulklen = bulklen+2; /* add two bytes for CR+LF */
-        /* It is possible that the bulk read is already in the
-         * buffer. Check this condition and handle it accordingly.
-         * This is just a fast path, alternative to call processInputBuffer().
-         * It's a good idea since the code is small and this condition
-         * happens most of the times. */
-        if ((signed)sdslen(c->querybuf) >= c->bulklen) {
-            c->argv[c->argc] = createStringObject(c->querybuf,c->bulklen-2);
-            c->argc++;
-            c->querybuf = sdsrange(c->querybuf,c->bulklen,-1);
-        } else {
-            /* Otherwise return... there is to read the last argument
-             * from the socket. */
-            return 1;
-        }
+     * such as wrong arity, bad command name and so forth. */
+    c->cmd = c->lastcmd = lookupCommand(c->argv[0]->ptr);
+    if (!c->cmd) {
+        addReplyErrorFormat(c,"unknown command '%s'",
+            (char*)c->argv[0]->ptr);
+        return REDIS_OK;
+    } else if ((c->cmd->arity > 0 && c->cmd->arity != c->argc) ||
+               (c->argc < -c->cmd->arity)) {
+        addReplyErrorFormat(c,"wrong number of arguments for '%s' command",
+            c->cmd->name);
+        return REDIS_OK;
     }
     }
-    /* Let's try to encode the bulk object to save space. */
-    if (cmd->flags & REDIS_CMD_BULK)
-        c->argv[c->argc-1] = tryObjectEncoding(c->argv[c->argc-1]);
 
     /* Check if the user is authenticated */
 
     /* Check if the user is authenticated */
-    if (server.requirepass && !c->authenticated && cmd->proc != authCommand) {
-        addReplySds(c,sdsnew("-ERR operation not permitted\r\n"));
-        resetClient(c);
-        return 1;
+    if (server.requirepass && !c->authenticated && c->cmd->proc != authCommand)
+    {
+        addReplyError(c,"operation not permitted");
+        return REDIS_OK;
     }
 
     }
 
-    /* Handle the maxmemory directive */
-    if (server.maxmemory && (cmd->flags & REDIS_CMD_DENYOOM) &&
+    /* If cluster is enabled, redirect here */
+    if (server.cluster_enabled &&
+                !(c->cmd->getkeys_proc == NULL && c->cmd->firstkey == 0)) {
+        int hashslot;
+
+        if (server.cluster.state != REDIS_CLUSTER_OK) {
+            addReplyError(c,"The cluster is down. Check with CLUSTER INFO for more information");
+            return REDIS_OK;
+        } else {
+            int ask;
+            clusterNode *n = getNodeByQuery(c,c->cmd,c->argv,c->argc,&hashslot,&ask);
+            if (n == NULL) {
+                addReplyError(c,"Multi keys request invalid in cluster");
+                return REDIS_OK;
+            } else if (n != server.cluster.myself) {
+                addReplySds(c,sdscatprintf(sdsempty(),
+                    "-%s %d %s:%d\r\n", ask ? "ASK" : "MOVED",
+                    hashslot,n->ip,n->port));
+                return REDIS_OK;
+            }
+        }
+    }
+
+    /* Handle the maxmemory directive.
+     *
+     * First we try to free some memory if possible (if there are volatile
+     * keys in the dataset). If there are not the only thing we can do
+     * is returning an error. */
+    if (server.maxmemory) freeMemoryIfNeeded();
+    if (server.maxmemory && (c->cmd->flags & REDIS_CMD_DENYOOM) &&
         zmalloc_used_memory() > server.maxmemory)
     {
         zmalloc_used_memory() > server.maxmemory)
     {
-        addReplySds(c,sdsnew("-ERR command not allowed when used memory > 'maxmemory'\r\n"));
-        resetClient(c);
-        return 1;
+        addReplyError(c,"command not allowed when used memory > 'maxmemory'");
+        return REDIS_OK;
     }
 
     /* Only allow SUBSCRIBE and UNSUBSCRIBE in the context of Pub/Sub */
     if ((dictSize(c->pubsub_channels) > 0 || listLength(c->pubsub_patterns) > 0)
         &&
     }
 
     /* Only allow SUBSCRIBE and UNSUBSCRIBE in the context of Pub/Sub */
     if ((dictSize(c->pubsub_channels) > 0 || listLength(c->pubsub_patterns) > 0)
         &&
-        cmd->proc != subscribeCommand && cmd->proc != unsubscribeCommand &&
-        cmd->proc != psubscribeCommand && cmd->proc != punsubscribeCommand) {
-        addReplySds(c,sdsnew("-ERR only (P)SUBSCRIBE / (P)UNSUBSCRIBE / QUIT allowed in this context\r\n"));
-        resetClient(c);
-        return 1;
+        c->cmd->proc != subscribeCommand &&
+        c->cmd->proc != unsubscribeCommand &&
+        c->cmd->proc != psubscribeCommand &&
+        c->cmd->proc != punsubscribeCommand) {
+        addReplyError(c,"only (P)SUBSCRIBE / (P)UNSUBSCRIBE / QUIT allowed in this context");
+        return REDIS_OK;
+    }
+
+    /* 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.repl_state != REDIS_REPL_CONNECTED &&
+        server.repl_serve_stale_data == 0 &&
+        c->cmd->proc != infoCommand && c->cmd->proc != slaveofCommand)
+    {
+        addReplyError(c,
+            "link with MASTER is down and slave-serve-stale-data is set to no");
+        return REDIS_OK;
+    }
+
+    /* Loading DB? Return an error if the command is not INFO */
+    if (server.loading && c->cmd->proc != infoCommand) {
+        addReply(c, shared.loadingerr);
+        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 &&
     }
 
     /* Exec the command */
     if (c->flags & REDIS_MULTI &&
-        cmd->proc != execCommand && cmd->proc != discardCommand &&
-        cmd->proc != multiCommand && cmd->proc != watchCommand)
+        c->cmd->proc != execCommand && c->cmd->proc != discardCommand &&
+        c->cmd->proc != multiCommand && c->cmd->proc != watchCommand)
     {
     {
-        queueMultiCommand(c,cmd);
+        queueMultiCommand(c);
         addReply(c,shared.queued);
     } else {
         addReply(c,shared.queued);
     } else {
-        if (server.vm_enabled && server.vm_max_threads > 0 &&
-            blockClientOnSwappedKeys(c,cmd)) return 1;
-        call(c,cmd);
+        call(c);
     }
     }
-
-    /* Prepare the client for the next command */
-    resetClient(c);
-    return 1;
+    return REDIS_OK;
 }
 
 /*================================== Shutdown =============================== */
 
 }
 
 /*================================== Shutdown =============================== */
 
-int prepareForShutdown() {
-    redisLog(REDIS_WARNING,"User requested shutdown, saving DB...");
+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. */
     /* 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) {
-        redisLog(REDIS_WARNING,"There is a live saving child. Killing it!");
-        kill(server.bgsavechildpid,SIGKILL);
-        rdbRemoveTempFile(server.bgsavechildpid);
+    if (server.rdb_child_pid != -1) {
+        redisLog(REDIS_WARNING,"There is a child saving an .rdb. Killing it!");
+        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. */
+        if (server.aof_child_pid != -1) {
+            redisLog(REDIS_WARNING,
+                "There is a child rewriting the AOF. Killing it!");
+            kill(server.aof_child_pid,SIGKILL);
+        }
         /* Append only file: fsync() the AOF and exit */
         /* Append only file: fsync() the AOF and exit */
-        aof_fsync(server.appendfd);
-        if (server.vm_enabled) unlink(server.vm_swap_file);
-    } else {
+        redisLog(REDIS_NOTICE,"Calling fsync() on the AOF file.");
+        aof_fsync(server.aof_fd);
+    }
+    if ((server.saveparamslen > 0 && !nosave) || save) {
+        redisLog(REDIS_NOTICE,"Saving the final RDB snapshot before exiting.");
         /* Snapshotting. Perform a SYNC SAVE and exit */
         /* 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());
-        } else {
+        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
              * saving aborted, handling special stuff like slaves pending for
              * synchronization... */
             /* 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");
+            redisLog(REDIS_WARNING,"Error trying to save the DB, can't exit.");
             return REDIS_ERR;
         }
     }
             return REDIS_ERR;
         }
     }
-    redisLog(REDIS_WARNING,"Server exit now, bye bye...");
+    if (server.daemonize) {
+        redisLog(REDIS_NOTICE,"Removing the pid file.");
+        unlink(server.pidfile);
+    }
+    /* 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;
 }
 
 /*================================== Commands =============================== */
 
 void authCommand(redisClient *c) {
     return REDIS_OK;
 }
 
 /*================================== 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 = 0;
       c->authenticated = 1;
       addReply(c,shared.ok);
     } else {
       c->authenticated = 0;
-      addReplySds(c,sdscatprintf(sdsempty(),"-ERR invalid password\r\n"));
+      addReplyError(c,"invalid password");
     }
 }
 
     }
 }
 
@@ -1125,125 +1396,331 @@ void bytesToHuman(char *s, unsigned long long n) {
 /* 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. */
 /* 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. */
-sds genRedisInfoString(void) {
-    sds info;
+sds genRedisInfoString(char *section) {
+    sds info = sdsempty();
     time_t uptime = time(NULL)-server.stat_starttime;
     time_t uptime = time(NULL)-server.stat_starttime;
-    int j;
-    char hmem[64];
-
-    bytesToHuman(hmem,zmalloc_used_memory());
-    info = sdscatprintf(sdsempty(),
-        "redis_version:%s\r\n"
-        "redis_git_sha1:%s\r\n"
-        "redis_git_dirty:%d\r\n"
-        "arch_bits:%s\r\n"
-        "multiplexing_api:%s\r\n"
-        "process_id:%ld\r\n"
-        "uptime_in_seconds:%ld\r\n"
-        "uptime_in_days:%ld\r\n"
-        "connected_clients:%d\r\n"
-        "connected_slaves:%d\r\n"
-        "blocked_clients:%d\r\n"
-        "used_memory:%zu\r\n"
-        "used_memory_human:%s\r\n"
-        "changes_since_last_save:%lld\r\n"
-        "bgsave_in_progress:%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"
-        "expired_keys:%lld\r\n"
-        "hash_max_zipmap_entries:%zu\r\n"
-        "hash_max_zipmap_value:%zu\r\n"
-        "pubsub_channels:%ld\r\n"
-        "pubsub_patterns:%u\r\n"
-        "vm_enabled:%d\r\n"
-        "role:%s\r\n"
-        ,REDIS_VERSION,
-        redisGitSHA1(),
-        strtol(redisGitDirty(),NULL,10) > 0,
-        (sizeof(long) == 8) ? "64" : "32",
-        aeGetApiName(),
-        (long) getpid(),
-        uptime,
-        uptime/(3600*24),
-        listLength(server.clients)-listLength(server.slaves),
-        listLength(server.slaves),
-        server.blpop_blocked_clients,
-        zmalloc_used_memory(),
-        hmem,
-        server.dirty,
-        server.bgsavechildpid != -1,
-        server.lastsave,
-        server.bgrewritechildpid != -1,
-        server.stat_numconnections,
-        server.stat_numcommands,
-        server.stat_expiredkeys,
-        server.hash_max_zipmap_entries,
-        server.hash_max_zipmap_value,
-        dictSize(server.pubsub_channels),
-        listLength(server.pubsub_patterns),
-        server.vm_enabled != 0,
-        server.masterhost == NULL ? "master" : "slave"
-    );
-    if (server.masterhost) {
+    int j, numcommands;
+    struct rusage self_ru, c_ru;
+    unsigned long lol, bib;
+    int allsections = 0, defsections = 0;
+    int sections = 0;
+    
+    if (section) {
+        allsections = strcasecmp(section,"all") == 0;
+        defsections = strcasecmp(section,"default") == 0;
+    }
+
+    getrusage(RUSAGE_SELF, &self_ru);
+    getrusage(RUSAGE_CHILDREN, &c_ru);
+    getClientsMaxBuffers(&lol,&bib);
+
+    /* Server */
+    if (allsections || defsections || !strcasecmp(section,"server")) {
+        if (sections++) info = sdscat(info,"\r\n");
         info = sdscatprintf(info,
         info = sdscatprintf(info,
-            "master_host:%s\r\n"
-            "master_port:%d\r\n"
-            "master_link_status:%s\r\n"
-            "master_last_io_seconds_ago:%d\r\n"
-            ,server.masterhost,
-            server.masterport,
-            (server.replstate == REDIS_REPL_CONNECTED) ?
-                "up" : "down",
-            server.master ? ((int)(time(NULL)-server.master->lastinteraction)) : -1
-        );
+            "# Server\r\n"
+            "redis_version:%s\r\n"
+            "redis_git_sha1:%s\r\n"
+            "redis_git_dirty:%d\r\n"
+            "arch_bits:%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"
+            "uptime_in_days:%ld\r\n"
+            "lru_clock:%ld\r\n",
+            REDIS_VERSION,
+            redisGitSHA1(),
+            strtol(redisGitDirty(),NULL,10) > 0,
+            (sizeof(long) == 8) ? "64" : "32",
+            aeGetApiName(),
+#ifdef __GNUC__
+            __GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__,
+#else
+            0,0,0,
+#endif
+            (long) getpid(),
+            server.port,
+            uptime,
+            uptime/(3600*24),
+            (unsigned long) server.lruclock);
     }
     }
-    if (server.vm_enabled) {
-        lockThreadedIO();
+
+    /* Clients */
+    if (allsections || defsections || !strcasecmp(section,"clients")) {
+        if (sections++) info = sdscat(info,"\r\n");
         info = sdscatprintf(info,
         info = sdscatprintf(info,
-            "vm_conf_max_memory:%llu\r\n"
-            "vm_conf_page_size:%llu\r\n"
-            "vm_conf_pages:%llu\r\n"
-            "vm_stats_used_pages:%llu\r\n"
-            "vm_stats_swapped_objects:%llu\r\n"
-            "vm_stats_swappin_count:%llu\r\n"
-            "vm_stats_swappout_count:%llu\r\n"
-            "vm_stats_io_newjobs_len:%lu\r\n"
-            "vm_stats_io_processing_len:%lu\r\n"
-            "vm_stats_io_processed_len:%lu\r\n"
-            "vm_stats_io_active_threads:%lu\r\n"
-            "vm_stats_blocked_clients:%lu\r\n"
-            ,(unsigned long long) server.vm_max_memory,
-            (unsigned long long) server.vm_page_size,
-            (unsigned long long) server.vm_pages,
-            (unsigned long long) server.vm_stats_used_pages,
-            (unsigned long long) server.vm_stats_swapped_objects,
-            (unsigned long long) server.vm_stats_swapins,
-            (unsigned long long) server.vm_stats_swapouts,
-            (unsigned long) listLength(server.io_newjobs),
-            (unsigned long) listLength(server.io_processing),
-            (unsigned long) listLength(server.io_processed),
-            (unsigned long) server.io_active_threads,
-            (unsigned long) server.vm_blocked_clients
-        );
-        unlockThreadedIO();
+            "# Clients\r\n"
+            "connected_clients:%d\r\n"
+            "client_longest_output_list:%lu\r\n"
+            "client_biggest_input_buf:%lu\r\n"
+            "blocked_clients:%d\r\n",
+            listLength(server.clients)-listLength(server.slaves),
+            lol, bib,
+            server.bpop_blocked_clients);
     }
     }
-    for (j = 0; j < server.dbnum; j++) {
-        long long keys, vkeys;
 
 
-        keys = dictSize(server.db[j].dict);
-        vkeys = dictSize(server.db[j].expires);
-        if (keys || vkeys) {
-            info = sdscatprintf(info, "db%d:keys=%lld,expires=%lld\r\n",
-                j, keys, vkeys);
+    /* Memory */
+    if (allsections || defsections || !strcasecmp(section,"memory")) {
+        char hmem[64];
+        char peak_hmem[64];
+
+        bytesToHuman(hmem,zmalloc_used_memory());
+        bytesToHuman(peak_hmem,server.stat_peak_memory);
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info,
+            "# Memory\r\n"
+            "used_memory:%zu\r\n"
+            "used_memory_human:%s\r\n"
+            "used_memory_rss:%zu\r\n"
+            "used_memory_peak:%zu\r\n"
+            "used_memory_peak_human:%s\r\n"
+            "used_memory_lua:%lld\r\n"
+            "mem_fragmentation_ratio:%.2f\r\n"
+            "mem_allocator:%s\r\n",
+            zmalloc_used_memory(),
+            hmem,
+            zmalloc_get_rss(),
+            server.stat_peak_memory,
+            peak_hmem,
+            ((long long)lua_gc(server.lua,LUA_GCCOUNT,0))*1024LL,
+            zmalloc_get_fragmentation_ratio(),
+            ZMALLOC_LIB
+            );
+    }
+
+    /* Persistence */
+    if (allsections || defsections || !strcasecmp(section,"persistence")) {
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info,
+            "# Persistence\r\n"
+            "loading:%d\r\n"
+            "aof_enabled:%d\r\n"
+            "changes_since_last_save:%lld\r\n"
+            "bgsave_in_progress:%d\r\n"
+            "last_save_time:%ld\r\n"
+            "bgrewriteaof_in_progress:%d\r\n",
+            server.loading,
+            server.aof_state != REDIS_AOF_OFF,
+            server.dirty,
+            server.rdb_child_pid != -1,
+            server.lastsave,
+            server.aof_child_pid != -1);
+
+        if (server.aof_state != REDIS_AOF_OFF) {
+            info = sdscatprintf(info,
+                "aof_current_size:%lld\r\n"
+                "aof_base_size:%lld\r\n"
+                "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) {
+            double perc;
+            time_t eta, elapsed;
+            off_t remaining_bytes = server.loading_total_bytes-
+                                    server.loading_loaded_bytes;
+
+            perc = ((double)server.loading_loaded_bytes /
+                   server.loading_total_bytes) * 100;
+
+            elapsed = time(NULL)-server.loading_start_time;
+            if (elapsed == 0) {
+                eta = 1; /* A fake 1 second figure if we don't have
+                            enough info */
+            } else {
+                eta = (elapsed*remaining_bytes)/server.loading_loaded_bytes;
+            }
+
+            info = sdscatprintf(info,
+                "loading_start_time:%ld\r\n"
+                "loading_total_bytes:%llu\r\n"
+                "loading_loaded_bytes:%llu\r\n"
+                "loading_loaded_perc:%.2f\r\n"
+                "loading_eta_seconds:%ld\r\n"
+                ,(unsigned long) server.loading_start_time,
+                (unsigned long long) server.loading_total_bytes,
+                (unsigned long long) server.loading_loaded_bytes,
+                perc,
+                eta
+            );
+        }
+    }
+
+    /* Stats */
+    if (allsections || defsections || !strcasecmp(section,"stats")) {
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info,
+            "# 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"
+            "pubsub_patterns:%u\r\n"
+            "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_keyspace_misses,
+            dictSize(server.pubsub_channels),
+            listLength(server.pubsub_patterns),
+            server.stat_fork_time);
+    }
+
+    /* Replication */
+    if (allsections || defsections || !strcasecmp(section,"replication")) {
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info,
+            "# Replication\r\n"
+            "role:%s\r\n",
+            server.masterhost == NULL ? "master" : "slave");
+        if (server.masterhost) {
+            info = sdscatprintf(info,
+                "master_host:%s\r\n"
+                "master_port:%d\r\n"
+                "master_link_status:%s\r\n"
+                "master_last_io_seconds_ago:%d\r\n"
+                "master_sync_in_progress:%d\r\n"
+                ,server.masterhost,
+                server.masterport,
+                (server.repl_state == REDIS_REPL_CONNECTED) ?
+                    "up" : "down",
+                server.master ?
+                ((int)(time(NULL)-server.master->lastinteraction)) : -1,
+                server.repl_state == 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"
+                    ,(long)server.repl_transfer_left,
+                    (int)(time(NULL)-server.repl_transfer_lastio)
+                );
+            }
+
+            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,
+            "connected_slaves:%d\r\n",
+            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 */
+    if (allsections || defsections || !strcasecmp(section,"cpu")) {
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info,
+        "# CPU\r\n"
+        "used_cpu_sys:%.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_stime.tv_sec+(float)self_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 */
+    if (allsections || !strcasecmp(section,"commandstats")) {
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info, "# Commandstats\r\n");
+        numcommands = sizeof(redisCommandTable)/sizeof(struct redisCommand);
+        for (j = 0; j < numcommands; j++) {
+            struct redisCommand *c = redisCommandTable+j;
+
+            if (!c->calls) continue;
+            info = sdscatprintf(info,
+                "cmdstat_%s:calls=%lld,usec=%lld,usec_per_call=%.2f\r\n",
+                c->name, c->calls, c->microseconds,
+                (c->calls == 0) ? 0 : ((float)c->microseconds/c->calls));
+        }
+    }
+
+    /* Clusetr */
+    if (allsections || defsections || !strcasecmp(section,"cluster")) {
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info,
+        "# Cluster\r\n"
+        "cluster_enabled:%d\r\n",
+        server.cluster_enabled);
+    }
+
+    /* Key space */
+    if (allsections || defsections || !strcasecmp(section,"keyspace")) {
+        if (sections++) info = sdscat(info,"\r\n");
+        info = sdscatprintf(info, "# Keyspace\r\n");
+        for (j = 0; j < server.dbnum; j++) {
+            long long keys, vkeys;
+
+            keys = dictSize(server.db[j].dict);
+            vkeys = dictSize(server.db[j].expires);
+            if (keys || vkeys) {
+                info = sdscatprintf(info, "db%d:keys=%lld,expires=%lld\r\n",
+                    j, keys, vkeys);
+            }
         }
     }
     return info;
 }
 
 void infoCommand(redisClient *c) {
         }
     }
     return info;
 }
 
 void infoCommand(redisClient *c) {
-    sds info = genRedisInfoString();
+    char *section = c->argc == 2 ? c->argv[1]->ptr : "default";
+
+    if (c->argc > 2) {
+        addReply(c,shared.syntaxerr);
+        return;
+    }
+    sds info = genRedisInfoString(section);
     addReplySds(c,sdscatprintf(sdsempty(),"$%lu\r\n",
         (unsigned long)sdslen(info)));
     addReplySds(c,info);
     addReplySds(c,sdscatprintf(sdsempty(),"$%lu\r\n",
         (unsigned long)sdslen(info)));
     addReplySds(c,info);
@@ -1262,27 +1739,6 @@ void monitorCommand(redisClient *c) {
 
 /* ============================ Maxmemory directive  ======================== */
 
 
 /* ============================ Maxmemory directive  ======================== */
 
-/* Try to free one object form the pre-allocated objects free list.
- * This is useful under low mem conditions as by default we take 1 million
- * free objects allocated. On success REDIS_OK is returned, otherwise
- * REDIS_ERR. */
-int tryFreeOneObjectFromFreelist(void) {
-    robj *o;
-
-    if (server.vm_enabled) pthread_mutex_lock(&server.obj_freelist_mutex);
-    if (listLength(server.objfreelist)) {
-        listNode *head = listFirst(server.objfreelist);
-        o = listNodeValue(head);
-        listDelNode(server.objfreelist,head);
-        if (server.vm_enabled) pthread_mutex_unlock(&server.obj_freelist_mutex);
-        zfree(o);
-        return REDIS_OK;
-    } else {
-        if (server.vm_enabled) pthread_mutex_unlock(&server.obj_freelist_mutex);
-        return REDIS_ERR;
-    }
-}
-
 /* This function gets called when 'maxmemory' is set on the config file to limit
  * the max memory used by the server, and we are out of memory.
  * This function will try to, in order:
 /* This function gets called when 'maxmemory' is set on the config file to limit
  * the max memory used by the server, and we are out of memory.
  * This function will try to, in order:
@@ -1295,30 +1751,90 @@ int tryFreeOneObjectFromFreelist(void) {
  * memory usage.
  */
 void freeMemoryIfNeeded(void) {
  * memory usage.
  */
 void freeMemoryIfNeeded(void) {
+    /* Remove keys accordingly to the active policy as long as we are
+     * over the memory limit. */
+    if (server.maxmemory_policy == REDIS_MAXMEMORY_NO_EVICTION) return;
+
     while (server.maxmemory && zmalloc_used_memory() > server.maxmemory) {
         int j, k, freed = 0;
 
     while (server.maxmemory && zmalloc_used_memory() > server.maxmemory) {
         int j, k, freed = 0;
 
-        if (tryFreeOneObjectFromFreelist() == REDIS_OK) continue;
         for (j = 0; j < server.dbnum; j++) {
         for (j = 0; j < server.dbnum; j++) {
-            int minttl = -1;
-            robj *minkey = NULL;
+            long bestval = 0; /* just to prevent warning */
+            sds bestkey = NULL;
             struct dictEntry *de;
             struct dictEntry *de;
+            redisDb *db = server.db+j;
+            dict *dict;
+
+            if (server.maxmemory_policy == REDIS_MAXMEMORY_ALLKEYS_LRU ||
+                server.maxmemory_policy == REDIS_MAXMEMORY_ALLKEYS_RANDOM)
+            {
+                dict = server.db[j].dict;
+            } else {
+                dict = server.db[j].expires;
+            }
+            if (dictSize(dict) == 0) continue;
+
+            /* volatile-random and allkeys-random policy */
+            if (server.maxmemory_policy == REDIS_MAXMEMORY_ALLKEYS_RANDOM ||
+                server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_RANDOM)
+            {
+                de = dictGetRandomKey(dict);
+                bestkey = dictGetKey(de);
+            }
+
+            /* volatile-lru and allkeys-lru policy */
+            else if (server.maxmemory_policy == REDIS_MAXMEMORY_ALLKEYS_LRU ||
+                server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_LRU)
+            {
+                for (k = 0; k < server.maxmemory_samples; k++) {
+                    sds thiskey;
+                    long thisval;
+                    robj *o;
+
+                    de = dictGetRandomKey(dict);
+                    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);
+                    o = dictGetVal(de);
+                    thisval = estimateObjectIdleTime(o);
+
+                    /* Higher idle time is better candidate for deletion */
+                    if (bestkey == NULL || thisval > bestval) {
+                        bestkey = thiskey;
+                        bestval = thisval;
+                    }
+                }
+            }
 
 
-            if (dictSize(server.db[j].expires)) {
-                freed = 1;
-                /* From a sample of three keys drop the one nearest to
-                 * the natural expire */
-                for (k = 0; k < 3; k++) {
-                    time_t t;
-
-                    de = dictGetRandomKey(server.db[j].expires);
-                    t = (time_t) dictGetEntryVal(de);
-                    if (minttl == -1 || t < minttl) {
-                        minkey = dictGetEntryKey(de);
-                        minttl = t;
+            /* volatile-ttl */
+            else if (server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_TTL) {
+                for (k = 0; k < server.maxmemory_samples; k++) {
+                    sds thiskey;
+                    long thisval;
+
+                    de = dictGetRandomKey(dict);
+                    thiskey = dictGetKey(de);
+                    thisval = (long) dictGetVal(de);
+
+                    /* Expire sooner (minor expire unix timestamp) is better
+                     * candidate for deletion */
+                    if (bestkey == NULL || thisval < bestval) {
+                        bestkey = thiskey;
+                        bestval = thisval;
                     }
                 }
                     }
                 }
-                dbDelete(server.db+j,minkey);
+            }
+
+            /* Finally remove the selected key. */
+            if (bestkey) {
+                robj *keyobj = createStringObject(bestkey,sdslen(bestkey));
+                propagateExpire(db,keyobj);
+                dbDelete(db,keyobj);
+                server.stat_evictedkeys++;
+                decrRefCount(keyobj);
+                freed++;
             }
         }
         if (!freed) return; /* nothing to free... */
             }
         }
         if (!freed) return; /* nothing to free... */
@@ -1349,9 +1865,17 @@ void linuxOvercommitMemoryWarning(void) {
 }
 #endif /* __linux__ */
 
 }
 #endif /* __linux__ */
 
+void createPidFile(void) {
+    /* Try to write the pid file in a best-effort way. */
+    FILE *fp = fopen(server.pidfile,"w");
+    if (fp) {
+        fprintf(fp,"%d\n",(int)getpid());
+        fclose(fp);
+    }
+}
+
 void daemonize(void) {
     int fd;
 void daemonize(void) {
     int fd;
-    FILE *fp;
 
     if (fork() != 0) exit(0); /* parent exits */
     setsid(); /* create a new session */
 
     if (fork() != 0) exit(0); /* parent exits */
     setsid(); /* create a new session */
@@ -1365,12 +1889,6 @@ void daemonize(void) {
         dup2(fd, STDERR_FILENO);
         if (fd > STDERR_FILENO) close(fd);
     }
         dup2(fd, STDERR_FILENO);
         if (fd > STDERR_FILENO) close(fd);
     }
-    /* Try to write the pid file */
-    fp = fopen(server.pidfile,"w");
-    if (fp) {
-        fprintf(fp,"%d\n",getpid());
-        fclose(fp);
-    }
 }
 
 void version() {
 }
 
 void version() {
@@ -1380,138 +1898,135 @@ 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);
 }
 
+void redisAsciiArt(void) {
+#include "asciilogo.h"
+    char *buf = zmalloc(1024*16);
+
+    snprintf(buf,1024*16,ascii_logo,
+        REDIS_VERSION,
+        redisGitSHA1(),
+        strtol(redisGitDirty(),NULL,10) > 0,
+        (sizeof(long) == 8) ? "64" : "32",
+        server.cluster_enabled ? "cluster" : "stand alone",
+        server.port,
+        (long) getpid()
+    );
+    redisLogRaw(REDIS_NOTICE|REDIS_LOG_RAW,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) {
 int main(int argc, char **argv) {
-    time_t start;
+    long long start;
 
 
+    zmalloc_enable_thread_safeness();
     initServerConfig();
     initServerConfig();
-    sortCommandTable();
-    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'");
     }
     if (server.daemonize) daemonize();
     initServer();
     } 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'");
     }
     if (server.daemonize) daemonize();
     initServer();
-    redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION);
+    if (server.daemonize) createPidFile();
+    redisAsciiArt();
+    redisLog(REDIS_WARNING,"Server started, Redis version " REDIS_VERSION);
 #ifdef __linux__
     linuxOvercommitMemoryWarning();
 #endif
 #ifdef __linux__
     linuxOvercommitMemoryWarning();
 #endif
-    start = time(NULL);
-    if (server.appendonly) {
-        if (loadAppendOnlyFile(server.appendfilename) == REDIS_OK)
-            redisLog(REDIS_NOTICE,"DB loaded from append only file: %ld seconds",time(NULL)-start);
+    start = ustime();
+    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 {
     } else {
-        if (rdbLoad(server.dbfilename) == REDIS_OK)
-            redisLog(REDIS_NOTICE,"DB loaded from disk: %ld seconds",time(NULL)-start);
+        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);
+        }
     }
     }
-    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);
+    if (server.sofd > 0)
+        redisLog(REDIS_NOTICE,"The server is now ready to accept connections at %s", server.unixsocket);
     aeSetBeforeSleepProc(server.el,beforeSleep);
     aeMain(server.el);
     aeDeleteEventLoop(server.el);
     return 0;
 }
 
     aeSetBeforeSleepProc(server.el,beforeSleep);
     aeMain(server.el);
     aeDeleteEventLoop(server.el);
     return 0;
 }
 
-/* ============================= Backtrace support ========================= */
-
-#ifdef HAVE_BACKTRACE
-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
-}
-
-void segvHandler(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;
-    REDIS_NOTUSED(info);
-
-    redisLog(REDIS_WARNING,
-        "======= Ooops! Redis %s got signal: -%d- =======", REDIS_VERSION, sig);
-    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 */
-    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. */
-    _exit(0);
-}
-
-void sigtermHandler(int sig) {
-    REDIS_NOTUSED(sig);
-
-    redisLog(REDIS_WARNING,"SIGTERM received, scheduling shutting down...");
-    server.shutdown_asap = 1;
-}
-
-void setupSigSegvAction(void) {
-    struct sigaction act;
-
-    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 | SA_SIGINFO;
-    act.sa_sigaction = segvHandler;
-    sigaction (SIGSEGV, &act, NULL);
-    sigaction (SIGBUS, &act, NULL);
-    sigaction (SIGFPE, &act, NULL);
-    sigaction (SIGILL, &act, NULL);
-    sigaction (SIGBUS, &act, NULL);
-
-    act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND;
-    act.sa_handler = sigtermHandler;
-    sigaction (SIGTERM, &act, NULL);
-    return;
-}
-
-#else /* HAVE_BACKTRACE */
-void setupSigSegvAction(void) {
-}
-#endif /* HAVE_BACKTRACE */
-
 /* The End */
 /* The End */
Redis += OpenLDAP MDB