Merge pull request #321 from mkwiatkowski/ticket227

[redis.git] / src / redis.h

diff --git a/src/redis.h b/src/redis.h
index 032602641144d78a58eef992d0ab421c8cf54193..def7881fba7c323dd81cba109127cb66a5dba8f8 100644 (file)
--- a/src/redis.h
+++ b/src/redis.h
@@ -20,6 +20,7 @@
 #include <syslog.h>
 #include <netinet/in.h>
 #include <lua.h>
 #include <syslog.h>
 #include <netinet/in.h>
 #include <lua.h>

+#include <signal.h>

 
 #include "ae.h"      /* Event driven programming library */
 #include "sds.h"     /* Dynamic safe strings */
 
 #include "ae.h"      /* Event driven programming library */
 #include "sds.h"     /* Dynamic safe strings */


@@ -39,22 +40,29 @@
 
 /* Static server configuration */
 #define REDIS_SERVERPORT        6379    /* TCP port */
 
 /* Static server configuration */
 #define REDIS_SERVERPORT        6379    /* TCP port */

-#define REDIS_MAXIDLETIME       (60*5)  /* default client timeout */
-#define REDIS_IOBUF_LEN         1024
-#define REDIS_LOADBUF_LEN       1024
+#define REDIS_MAXIDLETIME       0       /* default client timeout: infinite */

 #define REDIS_DEFAULT_DBNUM     16
 #define REDIS_CONFIGLINE_MAX    1024
 #define REDIS_DEFAULT_DBNUM     16
 #define REDIS_CONFIGLINE_MAX    1024

-#define REDIS_MAX_SYNC_TIME     60      /* Slave can't take more to sync */

 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)

-#define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */

 #define REDIS_SHARED_INTEGERS 10000
 #define REDIS_SHARED_INTEGERS 10000

-#define REDIS_REPLY_CHUNK_BYTES (5*1500) /* 5 TCP packets with default MTU */

 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */

-#define REDIS_AUTO_AOFREWRITE_PERC  100
-#define REDIS_AUTO_AOFREWRITE_MIN_SIZE (1024*1024)
+#define REDIS_AOF_REWRITE_PERC  100
+#define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
+#define REDIS_AOF_REWRITE_ITEMS_PER_CMD 64

 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
 #define REDIS_SLOWLOG_MAX_LEN 64
 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
 #define REDIS_SLOWLOG_MAX_LEN 64

+#define REDIS_MAX_CLIENTS 10000
+
+#define REDIS_REPL_TIMEOUT 60
+#define REDIS_REPL_PING_SLAVE_PERIOD 10
+
+/* Protocol and I/O related defines */
+#define REDIS_MAX_QUERYBUF_LEN  (1024*1024*1024) /* 1GB max query buffer. */
+#define REDIS_IOBUF_LEN         (1024*16)  /* Generic I/O buffer size */
+#define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
+#define REDIS_INLINE_MAX_SIZE   (1024*64) /* Max size of inline reads */
+#define REDIS_MBULK_BIG_ARG     (1024*32)

 
 /* Hash table parameters */
 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
 
 /* Hash table parameters */
 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */


@@ -90,11 +98,6 @@
 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
 
 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
 

-/* Object types only used for dumping to disk */
-#define REDIS_EXPIRETIME 253
-#define REDIS_SELECTDB 254
-#define REDIS_EOF 255
-

 /* Defines related to the dump file format. To store 32 bits lengths for short
  * keys requires a lot of space, so we check the most significant 2 bits of
  * the first byte to interpreter the length:
 /* Defines related to the dump file format. To store 32 bits lengths for short
  * keys requires a lot of space, so we check the most significant 2 bits of
  * the first byte to interpreter the length:


@@ -122,6 +125,11 @@
 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 
 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 

+/* AOF states */
+#define REDIS_AOF_OFF 0             /* AOF is off */
+#define REDIS_AOF_ON 1              /* AOF is on */
+#define REDIS_AOF_WAIT_REWRITE 2    /* AOF waits rewrite to start appending */
+

 /* Client flags */
 #define REDIS_SLAVE 1       /* This client is a slave server */
 #define REDIS_MASTER 2      /* This client is a master server */
 /* Client flags */
 #define REDIS_SLAVE 1       /* This client is a slave server */
 #define REDIS_MASTER 2      /* This client is a master server */


@@ -133,11 +141,20 @@
 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
                                server.unblocked_clients */
 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
                                server.unblocked_clients */
 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */

+#define REDIS_ASKING 1024   /* Client issued the ASKING command */
+#define REDIS_CLOSE_ASAP 2048 /* Close this client ASAP */

 
 /* Client request types */
 #define REDIS_REQ_INLINE 1
 #define REDIS_REQ_MULTIBULK 2
 
 
 /* Client request types */
 #define REDIS_REQ_INLINE 1
 #define REDIS_REQ_MULTIBULK 2
 

+/* Client classes for client limits, currently used only for
+ * the max-client-output-buffer limit implementation. */
+#define REDIS_CLIENT_LIMIT_CLASS_NORMAL 0
+#define REDIS_CLIENT_LIMIT_CLASS_SLAVE 1
+#define REDIS_CLIENT_LIMIT_CLASS_PUBSUB 2
+#define REDIS_CLIENT_LIMIT_NUM_CLASSES 3
+

 /* Slave replication state - slave side */
 #define REDIS_REPL_NONE 0 /* No active replication */
 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
 /* Slave replication state - slave side */
 #define REDIS_REPL_NONE 0 /* No active replication */
 #define REDIS_REPL_CONNECT 1 /* Must connect to master */


@@ -181,9 +198,9 @@
 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 
 /* Append only defines */
 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 
 /* Append only defines */

-#define APPENDFSYNC_NO 0
-#define APPENDFSYNC_ALWAYS 1
-#define APPENDFSYNC_EVERYSEC 2
+#define AOF_FSYNC_NO 0
+#define AOF_FSYNC_ALWAYS 1
+#define AOF_FSYNC_EVERYSEC 2

 
 /* Zip structure related defaults */
 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 
 /* Zip structure related defaults */
 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512


@@ -208,13 +225,21 @@
 #define REDIS_MAXMEMORY_NO_EVICTION 5
 
 /* Scripting */
 #define REDIS_MAXMEMORY_NO_EVICTION 5
 
 /* Scripting */

-#define REDIS_LUA_TIME_LIMIT 60000 /* milliseconds */
+#define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
+
+/* Units */
+#define UNIT_SECONDS 0
+#define UNIT_MILLISECONDS 1
+
+/* SHUTDOWN flags */
+#define REDIS_SHUTDOWN_SAVE 1       /* Force SAVE on SHUTDOWN even if no save
+                                       points are configured. */
+#define REDIS_SHUTDOWN_NOSAVE 2     /* Don't SAVE on SHUTDOWN. */

 
 /* We can print the stacktrace, so our assert is defined this way: */
 
 /* We can print the stacktrace, so our assert is defined this way: */

+#define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))

 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)

-void _redisAssert(char *estr, char *file, int line);
-void _redisPanic(char *msg, char *file, int line);

 
 /*-----------------------------------------------------------------------------
  * Data types
 
 /*-----------------------------------------------------------------------------
  * Data types


@@ -232,33 +257,8 @@ typedef struct redisObject {
     unsigned lru:22;        /* lru time (relative to server.lruclock) */
     int refcount;
     void *ptr;
     unsigned lru:22;        /* lru time (relative to server.lruclock) */
     int refcount;
     void *ptr;

-    /* VM fields are only allocated if VM is active, otherwise the
-     * object allocation function will just allocate
-     * sizeof(redisObjct) minus sizeof(redisObjectVM), so using
-     * Redis without VM active will not have any overhead. */

 } robj;
 
 } robj;
 

-/* The VM pointer structure - identifies an object in the swap file.
- *
- * This object is stored in place of the value
- * object in the main key->value hash table representing a database.
- * Note that the first fields (type, storage) are the same as the redisObject
- * structure so that vmPointer strucuters can be accessed even when casted
- * as redisObject structures.
- *
- * This is useful as we don't know if a value object is or not on disk, but we
- * are always able to read obj->storage to check this. For vmPointer
- * structures "type" is set to REDIS_VMPOINTER (even if without this field
- * is still possible to check the kind of object from the value of 'storage').*/
-typedef struct vmPointer {
-    unsigned type:4;
-    unsigned storage:2; /* REDIS_VM_SWAPPED or REDIS_VM_LOADING */
-    unsigned notused:26;
-    unsigned int vtype; /* type of the object stored in the swap file */
-    off_t page;         /* the page at witch the object is stored on disk */
-    off_t usedpages;    /* number of pages used on disk */
-} vmpointer;
-

 /* Macro used to initalize a Redis object allocated on the stack.
  * Note that this macro is taken near the structure definition to make sure
  * we'll update it when the structure is changed, to avoid bugs like
 /* Macro used to initalize a Redis object allocated on the stack.
  * Note that this macro is taken near the structure definition to make sure
  * we'll update it when the structure is changed, to avoid bugs like


@@ -309,13 +309,15 @@ typedef struct redisClient {
     sds querybuf;
     int argc;
     robj **argv;
     sds querybuf;
     int argc;
     robj **argv;

-    struct redisCommand *cmd;
+    struct redisCommand *cmd, *lastcmd;

     int reqtype;
     int multibulklen;       /* number of multi bulk arguments left to read */
     long bulklen;           /* length of bulk argument in multi bulk request */
     list *reply;
     int reqtype;
     int multibulklen;       /* number of multi bulk arguments left to read */
     long bulklen;           /* length of bulk argument in multi bulk request */
     list *reply;

+    unsigned long reply_bytes; /* Tot bytes of objects in reply list */

     int sentlen;
     time_t lastinteraction; /* time of the last interaction, used for timeout */
     int sentlen;
     time_t lastinteraction; /* time of the last interaction, used for timeout */

+    time_t obuf_soft_limit_reached_time;

     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
     int slaveseldb;         /* slave selected db, if this client is a slave */
     int authenticated;      /* when requirepass is non-NULL */
     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
     int slaveseldb;         /* slave selected db, if this client is a slave */
     int authenticated;      /* when requirepass is non-NULL */


@@ -345,7 +347,7 @@ struct sharedObjectsStruct {
     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
     *colon, *nullbulk, *nullmultibulk, *queued,
     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
     *colon, *nullbulk, *nullmultibulk, *queued,
     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,

-    *outofrangeerr, *noscripterr, *loadingerr, *plus,
+    *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,

     *select0, *select1, *select2, *select3, *select4,
     *select5, *select6, *select7, *select8, *select9,
     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
     *select0, *select1, *select2, *select3, *select4,
     *select5, *select6, *select7, *select8, *select9,
     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,


@@ -375,6 +377,12 @@ typedef struct zset {
     zskiplist *zsl;
 } zset;
 
     zskiplist *zsl;
 } zset;
 

+typedef struct clientBufferLimitsConfig {
+    unsigned long long hard_limit_bytes;
+    unsigned long long soft_limit_bytes;
+    time_t soft_limit_seconds;
+} clientBufferLimitsConfig;
+

 /*-----------------------------------------------------------------------------
  * Redis cluster data structures
  *----------------------------------------------------------------------------*/
 /*-----------------------------------------------------------------------------
  * Redis cluster data structures
  *----------------------------------------------------------------------------*/


@@ -446,6 +454,7 @@ typedef struct {
 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */
 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */

+#define CLUSTERMSG_TYPE_PUBLISH 4       /* Pub/Sub Publish propatagion */

 
 /* Initially we don't know our "name", but we'll find it once we connect
  * to the first node, using the getsockname() function. Then we'll use this
 
 /* Initially we don't know our "name", but we'll find it once we connect
  * to the first node, using the getsockname() function. Then we'll use this


@@ -464,16 +473,28 @@ typedef struct {
     char nodename[REDIS_CLUSTER_NAMELEN];
 } clusterMsgDataFail;
 
     char nodename[REDIS_CLUSTER_NAMELEN];
 } clusterMsgDataFail;
 

+typedef struct {
+    uint32_t channel_len;
+    uint32_t message_len;
+    unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
+} clusterMsgDataPublish;
+

 union clusterMsgData {
     /* PING, MEET and PONG */
     struct {
         /* Array of N clusterMsgDataGossip structures */
         clusterMsgDataGossip gossip[1];
     } ping;
 union clusterMsgData {
     /* PING, MEET and PONG */
     struct {
         /* Array of N clusterMsgDataGossip structures */
         clusterMsgDataGossip gossip[1];
     } ping;

+

     /* FAIL */
     struct {
         clusterMsgDataFail about;
     } fail;
     /* FAIL */
     struct {
         clusterMsgDataFail about;
     } fail;

+
+    /* PUBLISH */
+    struct {
+        clusterMsgDataPublish msg;
+    } publish;

 };
 
 typedef struct {
 };
 
 typedef struct {


@@ -499,107 +520,116 @@ struct redisServer {
     redisDb *db;
     dict *commands;             /* Command table hahs table */
     aeEventLoop *el;
     redisDb *db;
     dict *commands;             /* Command table hahs table */
     aeEventLoop *el;

+    unsigned lruclock:22;       /* Clock incrementing every minute, for LRU */
+    unsigned lruclock_padding:10;
+    int shutdown_asap;          /* SHUTDOWN needed ASAP */
+    int activerehashing;        /* Incremental rehash in serverCron() */
+    char *requirepass;          /* Pass for AUTH command, or NULL */
+    char *pidfile;              /* PID file path */

     /* Networking */
     /* Networking */

-    int port;
-    char *bindaddr;
-    char *unixsocket;
-    int ipfd;
-    int sofd;
-    int cfd;
-    list *clients;
-    list *slaves, *monitors;
-    char neterr[ANET_ERR_LEN];
+    int port;                   /* TCP listening port */
+    char *bindaddr;             /* Bind address or NULL */
+    char *unixsocket;           /* UNIX socket path */
+    mode_t unixsocketperm;      /* UNIX socket permission */
+    int ipfd;                   /* TCP socket file descriptor */
+    int sofd;                   /* Unix socket file descriptor */
+    int cfd;                    /* Cluster bus lisetning socket */
+    list *clients;              /* List of active clients */
+    list *clients_to_close;     /* Clients to close asynchronously */
+    list *slaves, *monitors;    /* List of slaves and MONITORs */
+    redisClient *current_client; /* Current client, only used on crash report */
+    char neterr[ANET_ERR_LEN];  /* Error buffer for anet.c */

     /* RDB / AOF loading information */
     /* RDB / AOF loading information */

-    int loading;
+    int loading;                /* We are loading data from disk if true */

     off_t loading_total_bytes;
     off_t loading_loaded_bytes;
     time_t loading_start_time;
     /* Fast pointers to often looked up command */
     struct redisCommand *delCommand, *multiCommand;
     off_t loading_total_bytes;
     off_t loading_loaded_bytes;
     time_t loading_start_time;
     /* Fast pointers to often looked up command */
     struct redisCommand *delCommand, *multiCommand;

-    int cronloops;              /* number of times the cron function run */
+    int cronloops;                  /* Number of times the cron function run */

     time_t lastsave;                /* Unix time of last save succeeede */
     /* Fields used only for stats */
     time_t lastsave;                /* Unix time of last save succeeede */
     /* Fields used only for stats */

-    time_t stat_starttime;          /* server start time */
-    long long stat_numcommands;     /* number of processed commands */
-    long long stat_numconnections;  /* number of connections received */
-    long long stat_expiredkeys;     /* number of expired keys */
-    long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
-    long long stat_keyspace_hits;   /* number of successful lookups of keys */
-    long long stat_keyspace_misses; /* number of failed lookups of keys */
-    size_t stat_peak_memory;        /* max used memory record */
-    long long stat_fork_time;       /* time needed to perform latets fork() */
-    list *slowlog;
-    long long slowlog_entry_id;
-    long long slowlog_log_slower_than;
-    unsigned long slowlog_max_len;
+    time_t stat_starttime;          /* Server start time */
+    long long stat_numcommands;     /* Number of processed commands */
+    long long stat_numconnections;  /* Number of connections received */
+    long long stat_expiredkeys;     /* Number of expired keys */
+    long long stat_evictedkeys;     /* Number of evicted keys (maxmemory) */
+    long long stat_keyspace_hits;   /* Number of successful lookups of keys */
+    long long stat_keyspace_misses; /* Number of failed lookups of keys */
+    size_t stat_peak_memory;        /* Max used memory record */
+    long long stat_fork_time;       /* Time needed to perform latets fork() */
+    long long stat_rejected_conn;   /* Clients rejected because of maxclients */
+    list *slowlog;                  /* SLOWLOG list of commands */
+    long long slowlog_entry_id;     /* SLOWLOG current entry ID */
+    long long slowlog_log_slower_than; /* SLOWLOG time limit (to get logged) */
+    unsigned long slowlog_max_len;     /* SLOWLOG max number of items logged */

     /* Configuration */
     /* Configuration */

-    int verbosity;
-    int maxidletime;
-    int dbnum;
-    int daemonize;
-    int appendonly;
-    int appendfsync;
-    int no_appendfsync_on_rewrite;
-    int auto_aofrewrite_perc;       /* Rewrite AOF if % growth is > M and... */
-    off_t auto_aofrewrite_min_size; /* the AOF file is at least N bytes. */
-    off_t auto_aofrewrite_base_size;/* AOF size on latest startup or rewrite. */
-    off_t appendonly_current_size;  /* AOF current size. */
-    int aofrewrite_scheduled;       /* Rewrite once BGSAVE terminates. */
-    int shutdown_asap;
-    int activerehashing;
-    char *requirepass;
-    /* Persistence */
-    long long dirty;            /* changes to DB from the last save */
-    long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
-    time_t lastfsync;
-    int appendfd;
-    int appendseldb;
-    time_t aof_flush_postponed_start;
-    char *pidfile;
-    pid_t bgsavechildpid;
-    pid_t bgrewritechildpid;
-    sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
-    sds aofbuf;       /* AOF buffer, written before entering the event loop */
-    struct saveparam *saveparams;
-    int saveparamslen;
-    char *dbfilename;
-    int rdbcompression;
-    char *appendfilename;
+    int verbosity;                  /* Loglevel in redis.conf */
+    int maxidletime;                /* Client timeout in seconds */
+    size_t client_max_querybuf_len; /* Limit for client query buffer length */
+    int dbnum;                      /* Total number of configured DBs */
+    int daemonize;                  /* True if running as a daemon */
+    clientBufferLimitsConfig client_obuf_limits[REDIS_CLIENT_LIMIT_NUM_CLASSES];
+    /* AOF persistence */
+    int aof_state;                  /* REDIS_AOF_(ON|OFF|WAIT_REWRITE) */
+    int aof_fsync;                  /* Kind of fsync() policy */
+    char *aof_filename;             /* Name of the AOF file */
+    int aof_no_fsync_on_rewrite;    /* Don't fsync if a rewrite is in prog. */
+    int aof_rewrite_perc;           /* Rewrite AOF if % growth is > M and... */
+    off_t aof_rewrite_min_size;     /* the AOF file is at least N bytes. */
+    off_t aof_rewrite_base_size;    /* AOF size on latest startup or rewrite. */
+    off_t aof_current_size;         /* AOF current size. */
+    int aof_rewrite_scheduled;      /* Rewrite once BGSAVE terminates. */
+    pid_t aof_child_pid;            /* PID if rewriting process */
+    sds aof_rewrite_buf; /* buffer taken by parent during oppend only rewrite */
+    sds aof_buf;      /* AOF buffer, written before entering the event loop */
+    int aof_fd;       /* File descriptor of currently selected AOF file */
+    int aof_selected_db; /* Currently selected DB in AOF */
+    time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */
+    time_t aof_last_fsync;            /* UNIX time of last fsync() */
+    /* RDB persistence */
+    long long dirty;                /* Changes to DB from the last save */
+    long long dirty_before_bgsave;  /* Used to restore dirty on failed BGSAVE */
+    pid_t rdb_child_pid;            /* PID of RDB saving child */
+    struct saveparam *saveparams;   /* Save points array for RDB */
+    int saveparamslen;              /* Number of saving points */
+    char *rdb_filename;             /* Name of RDB file */
+    int rdb_compression;            /* Use compression in RDB? */

     /* Logging */
     /* Logging */

-    char *logfile;
-    int syslog_enabled;
-    char *syslog_ident;
-    int syslog_facility;
-    /* Replication related */
-    int isslave;
+    char *logfile;                  /* Path of log file */
+    int syslog_enabled;             /* Is syslog enabled? */
+    char *syslog_ident;             /* Syslog ident */
+    int syslog_facility;            /* Syslog facility */

     /* Slave specific fields */
     /* Slave specific fields */

-    char *masterauth;
-    char *masterhost;
-    int masterport;
-    redisClient *master;    /* client that is master for this slave */
-    int repl_syncio_timeout; /* timeout for synchronous I/O calls */
-    int replstate;          /* replication status if the instance is a slave */
-    off_t repl_transfer_left;  /* bytes left reading .rdb  */
-    int repl_transfer_s;    /* slave -> master SYNC socket */
-    int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
-    char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
-    time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
+    char *masterauth;               /* AUTH with this password with master */
+    char *masterhost;               /* Hostname of master */
+    int masterport;                 /* Port of master */
+    int repl_ping_slave_period;     /* Master pings the salve every N seconds */
+    int repl_timeout;               /* Timeout after N seconds of master idle */
+    redisClient *master;     /* Client that is master for this slave */
+    int repl_syncio_timeout; /* Timeout for synchronous I/O calls */
+    int repl_state;          /* Replication status if the instance is a slave */
+    off_t repl_transfer_left;  /* Bytes left reading .rdb  */
+    int repl_transfer_s;     /* Slave -> Master SYNC socket */
+    int repl_transfer_fd;    /* Slave -> Master SYNC temp file descriptor */
+    char *repl_transfer_tmpfile; /* Slave-> master SYNC temp file name */
+    time_t repl_transfer_lastio; /* Unix time of the latest read, for timeout */

     int repl_serve_stale_data; /* Serve stale data when link is down? */
     int repl_serve_stale_data; /* Serve stale data when link is down? */

-    time_t repl_down_since; /* unix time at which link with master went down */
+    time_t repl_down_since; /* Unix time at which link with master went down */

     /* Limits */
     /* Limits */

-    unsigned int maxclients;
-    unsigned long long maxmemory;
-    int maxmemory_policy;
-    int maxmemory_samples;
+    unsigned int maxclients;        /* Max number of simultaneous clients */
+    unsigned long long maxmemory;   /* Max number of memory bytes to use */
+    int maxmemory_policy;           /* Policy for key evition */
+    int maxmemory_samples;          /* Pricision of random sampling */

     /* Blocked clients */
     /* Blocked clients */

-    unsigned int bpop_blocked_clients;
+    unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */

     list *unblocked_clients; /* list of clients to unblock before next loop */
     /* Sort parameters - qsort_r() is only available under BSD so we
      * have to take this state global, in order to pass it to sortCompare() */
     int sort_desc;
     int sort_alpha;
     int sort_bypattern;
     list *unblocked_clients; /* list of clients to unblock before next loop */
     /* Sort parameters - qsort_r() is only available under BSD so we
      * have to take this state global, in order to pass it to sortCompare() */
     int sort_desc;
     int sort_alpha;
     int sort_bypattern;

-    /* Zip structure config */
+    /* Zip structure config, see redis.conf for more information  */

     size_t hash_max_zipmap_entries;
     size_t hash_max_zipmap_value;
     size_t list_max_ziplist_entries;
     size_t hash_max_zipmap_entries;
     size_t hash_max_zipmap_value;
     size_t list_max_ziplist_entries;


@@ -607,22 +637,32 @@ struct redisServer {
     size_t set_max_intset_entries;
     size_t zset_max_ziplist_entries;
     size_t zset_max_ziplist_value;
     size_t set_max_intset_entries;
     size_t zset_max_ziplist_entries;
     size_t zset_max_ziplist_value;

-    time_t unixtime;    /* Unix time sampled every second. */
+    time_t unixtime;        /* Unix time sampled every second. */

     /* Pubsub */
     /* Pubsub */

-    dict *pubsub_channels; /* Map channels to list of subscribed clients */
-    list *pubsub_patterns; /* A list of pubsub_patterns */
-    /* Misc */
-    unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
-    unsigned lruclock_padding:10;
+    dict *pubsub_channels;  /* Map channels to list of subscribed clients */
+    list *pubsub_patterns;  /* A list of pubsub_patterns */

     /* Cluster */
     /* Cluster */

-    int cluster_enabled;
-    clusterState cluster;
+    int cluster_enabled;    /* Is cluster enabled? */
+    clusterState cluster;   /* State of the cluster */

     /* Scripting */
     lua_State *lua; /* The Lua interpreter. We use just one for all clients */
     /* Scripting */
     lua_State *lua; /* The Lua interpreter. We use just one for all clients */

-    redisClient *lua_client; /* The "fake client" to query Redis from Lua */
-    dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
-    long long lua_time_limit;
-    long long lua_time_start;
+    redisClient *lua_client;   /* The "fake client" to query Redis from Lua */
+    redisClient *lua_caller;   /* The client running EVAL right now, or NULL */
+    dict *lua_scripts;         /* A dictionary of SHA1 -> Lua scripts */
+    long long lua_time_limit;  /* Script timeout in seconds */
+    long long lua_time_start;  /* Start time of script */
+    int lua_write_dirty;  /* True if a write command was called during the
+                             execution of the current script. */
+    int lua_random_dirty; /* True if a random command was called during the
+                             execution of the current script. */
+    int lua_timedout;     /* True if we reached the time limit for script
+                             execution. */
+    int lua_kill;         /* Kill the script if true. */
+    /* Assert & bug reportign */
+    char *assert_failed;
+    char *assert_file;
+    int assert_line;
+    int bug_report_start; /* True if bug report header was already logged. */

 };
 
 typedef struct pubsubPattern {
 };
 
 typedef struct pubsubPattern {


@@ -726,6 +766,7 @@ dictType hashDictType;
 
 /* Utils */
 long long ustime(void);
 
 /* Utils */
 long long ustime(void);

+long long mstime(void);

 
 /* networking.c -- Networking and Client related operations */
 redisClient *createClient(int fd);
 
 /* networking.c -- Networking and Client related operations */
 redisClient *createClient(int fd);


@@ -753,11 +794,19 @@ void addReplyStatus(redisClient *c, char *status);
 void addReplyDouble(redisClient *c, double d);
 void addReplyLongLong(redisClient *c, long long ll);
 void addReplyMultiBulkLen(redisClient *c, long length);
 void addReplyDouble(redisClient *c, double d);
 void addReplyLongLong(redisClient *c, long long ll);
 void addReplyMultiBulkLen(redisClient *c, long length);

+void copyClientOutputBuffer(redisClient *dst, redisClient *src);

 void *dupClientReplyValue(void *o);
 void getClientsMaxBuffers(unsigned long *longest_output_list,
                           unsigned long *biggest_input_buffer);
 void *dupClientReplyValue(void *o);
 void getClientsMaxBuffers(unsigned long *longest_output_list,
                           unsigned long *biggest_input_buffer);

+sds getClientInfoString(redisClient *client);
+sds getAllClientsInfoString(void);

 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);

+unsigned long getClientOutputBufferMemoryUsage(redisClient *c);
+void freeClientsInAsyncFreeQueue(void);
+void asyncCloseClientOnOutputBufferLimitReached(redisClient *c);
+int getClientLimitClassByName(char *name);
+char *getClientLimitClassName(int class);

 
 #ifdef __GNUC__
 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 
 #ifdef __GNUC__
 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)


@@ -811,6 +860,7 @@ robj *tryObjectEncoding(robj *o);
 robj *getDecodedObject(robj *o);
 size_t stringObjectLen(robj *o);
 robj *createStringObjectFromLongLong(long long value);
 robj *getDecodedObject(robj *o);
 size_t stringObjectLen(robj *o);
 robj *createStringObjectFromLongLong(long long value);

+robj *createStringObjectFromLongDouble(long double value);

 robj *createListObject(void);
 robj *createZiplistObject(void);
 robj *createSetObject(void);
 robj *createListObject(void);
 robj *createZiplistObject(void);
 robj *createSetObject(void);


@@ -823,6 +873,8 @@ int checkType(redisClient *c, robj *o, int type);
 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 int getLongLongFromObject(robj *o, long long *target);
 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 int getLongLongFromObject(robj *o, long long *target);

+int getLongDoubleFromObject(robj *o, long double *target);
+int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);

 char *strEncoding(int encoding);
 int compareStringObjects(robj *a, robj *b);
 int equalStringObjects(robj *a, robj *b);
 char *strEncoding(int encoding);
 int compareStringObjects(robj *a, robj *b);
 int equalStringObjects(robj *a, robj *b);


@@ -929,9 +981,10 @@ int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 void freePubsubPattern(void *p);
 int listMatchPubsubPattern(void *a, void *b);
 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 void freePubsubPattern(void *p);
 int listMatchPubsubPattern(void *a, void *b);

+int pubsubPublishMessage(robj *channel, robj *message);

 
 /* Configuration */
 
 /* Configuration */

-void loadServerConfig(char *filename);
+void loadServerConfig(char *filename, char *options);

 void appendServerSaveParams(time_t seconds, int changes);
 void resetServerSaveParams();
 
 void appendServerSaveParams(time_t seconds, int changes);
 void resetServerSaveParams();
 


@@ -939,8 +992,8 @@ void resetServerSaveParams();
 int removeExpire(redisDb *db, robj *key);
 void propagateExpire(redisDb *db, robj *key);
 int expireIfNeeded(redisDb *db, robj *key);
 int removeExpire(redisDb *db, robj *key);
 void propagateExpire(redisDb *db, robj *key);
 int expireIfNeeded(redisDb *db, robj *key);

-time_t getExpire(redisDb *db, robj *key);
-void setExpire(redisDb *db, robj *key, time_t when);
+long long getExpire(redisDb *db, robj *key);
+void setExpire(redisDb *db, robj *key, long long when);

 robj *lookupKey(redisDb *db, robj *key);
 robj *lookupKeyRead(redisDb *db, robj *key);
 robj *lookupKeyWrite(redisDb *db, robj *key);
 robj *lookupKey(redisDb *db, robj *key);
 robj *lookupKeyRead(redisDb *db, robj *key);
 robj *lookupKeyWrite(redisDb *db, robj *key);


@@ -975,6 +1028,7 @@ clusterNode *createClusterNode(char *nodename, int flags);
 int clusterAddNode(clusterNode *node);
 void clusterCron(void);
 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
 int clusterAddNode(clusterNode *node);
 void clusterCron(void);
 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);

+void clusterPropagatePublish(robj *channel, robj *message);

 
 /* Scripting */
 void scriptingInit(void);
 
 /* Scripting */
 void scriptingInit(void);


@@ -990,6 +1044,7 @@ void echoCommand(redisClient *c);
 void setCommand(redisClient *c);
 void setnxCommand(redisClient *c);
 void setexCommand(redisClient *c);
 void setCommand(redisClient *c);
 void setnxCommand(redisClient *c);
 void setexCommand(redisClient *c);

+void psetexCommand(redisClient *c);

 void getCommand(redisClient *c);
 void delCommand(redisClient *c);
 void existsCommand(redisClient *c);
 void getCommand(redisClient *c);
 void delCommand(redisClient *c);
 void existsCommand(redisClient *c);


@@ -1001,6 +1056,7 @@ void incrCommand(redisClient *c);
 void decrCommand(redisClient *c);
 void incrbyCommand(redisClient *c);
 void decrbyCommand(redisClient *c);
 void decrCommand(redisClient *c);
 void incrbyCommand(redisClient *c);
 void decrbyCommand(redisClient *c);

+void incrbyfloatCommand(redisClient *c);

 void selectCommand(redisClient *c);
 void randomkeyCommand(redisClient *c);
 void keysCommand(redisClient *c);
 void selectCommand(redisClient *c);
 void randomkeyCommand(redisClient *c);
 void keysCommand(redisClient *c);


@@ -1050,8 +1106,11 @@ void mgetCommand(redisClient *c);
 void monitorCommand(redisClient *c);
 void expireCommand(redisClient *c);
 void expireatCommand(redisClient *c);
 void monitorCommand(redisClient *c);
 void expireCommand(redisClient *c);
 void expireatCommand(redisClient *c);

+void pexpireCommand(redisClient *c);
+void pexpireatCommand(redisClient *c);

 void getsetCommand(redisClient *c);
 void ttlCommand(redisClient *c);
 void getsetCommand(redisClient *c);
 void ttlCommand(redisClient *c);

+void pttlCommand(redisClient *c);

 void persistCommand(redisClient *c);
 void slaveofCommand(redisClient *c);
 void debugCommand(redisClient *c);
 void persistCommand(redisClient *c);
 void slaveofCommand(redisClient *c);
 void debugCommand(redisClient *c);


@@ -1094,6 +1153,7 @@ void hgetallCommand(redisClient *c);
 void hexistsCommand(redisClient *c);
 void configCommand(redisClient *c);
 void hincrbyCommand(redisClient *c);
 void hexistsCommand(redisClient *c);
 void configCommand(redisClient *c);
 void hincrbyCommand(redisClient *c);

+void hincrbyfloatCommand(redisClient *c);

 void subscribeCommand(redisClient *c);
 void unsubscribeCommand(redisClient *c);
 void psubscribeCommand(redisClient *c);
 void subscribeCommand(redisClient *c);
 void unsubscribeCommand(redisClient *c);
 void psubscribeCommand(redisClient *c);


@@ -1104,11 +1164,13 @@ void unwatchCommand(redisClient *c);
 void clusterCommand(redisClient *c);
 void restoreCommand(redisClient *c);
 void migrateCommand(redisClient *c);
 void clusterCommand(redisClient *c);
 void restoreCommand(redisClient *c);
 void migrateCommand(redisClient *c);

+void askingCommand(redisClient *c);

 void dumpCommand(redisClient *c);
 void objectCommand(redisClient *c);
 void clientCommand(redisClient *c);
 void evalCommand(redisClient *c);
 void evalShaCommand(redisClient *c);
 void dumpCommand(redisClient *c);
 void objectCommand(redisClient *c);
 void clientCommand(redisClient *c);
 void evalCommand(redisClient *c);
 void evalShaCommand(redisClient *c);

+void scriptCommand(redisClient *c);

 
 #if defined(__GNUC__)
 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
 
 #if defined(__GNUC__)
 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));


@@ -1117,4 +1179,12 @@ void *malloc(size_t size) __attribute__ ((deprecated));
 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
 #endif
 
 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
 #endif
 

+/* Debugging stuff */
+void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
+void _redisAssert(char *estr, char *file, int line);
+void _redisPanic(char *msg, char *file, int line);
+void bugReportStart(void);
+void redisLogObjectDebugInfo(robj *o);
+void sigsegvHandler(int sig, siginfo_t *info, void *secret);
+sds genRedisInfoString(char *section);

 #endif
 #endif