For coverage testing use exit() instead of _exit() when termiating saving children.

[redis.git] / src / redis.h

diff --git a/src/redis.h b/src/redis.h
index 3a5e3d4a81d8fec9ff5464cd5fc09c04f4eb7f2e..e86823db835502aba58891264fb6ca9178567ce5 100644 (file)
--- a/src/redis.h
+++ b/src/redis.h
@@ -28,7 +28,6 @@
 #include "adlist.h"  /* Linked lists */
 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
 #include "anet.h"    /* Networking the easy way */
 #include "adlist.h"  /* Linked lists */
 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
 #include "anet.h"    /* Networking the easy way */

-#include "zipmap.h"  /* Compact string -> string data structure */

 #include "ziplist.h" /* Compact list data structure */
 #include "intset.h"  /* Compact integer set structure */
 #include "version.h" /* Version macro */
 #include "ziplist.h" /* Compact list data structure */
 #include "intset.h"  /* Compact integer set structure */
 #include "version.h" /* Version macro */


@@ -45,7 +44,9 @@
 #define REDIS_CONFIGLINE_MAX    1024
 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
 #define REDIS_CONFIGLINE_MAX    1024
 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)

+#define REDIS_SHARED_SELECT_CMDS 10

 #define REDIS_SHARED_INTEGERS 10000
 #define REDIS_SHARED_INTEGERS 10000

+#define REDIS_SHARED_BULKHDR_LEN 32

 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
 #define REDIS_AOF_REWRITE_PERC  100
 #define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
 #define REDIS_AOF_REWRITE_PERC  100
 #define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)


@@ -57,6 +58,9 @@
 #define REDIS_REPL_TIMEOUT 60
 #define REDIS_REPL_PING_SLAVE_PERIOD 10
 
 #define REDIS_REPL_TIMEOUT 60
 #define REDIS_REPL_PING_SLAVE_PERIOD 10
 

+#define REDIS_RUN_ID_SIZE 40
+#define REDIS_OPS_SEC_SAMPLES 16
+

 /* 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 */
 /* 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 */


@@ -85,7 +89,6 @@
 #define REDIS_SET 2
 #define REDIS_ZSET 3
 #define REDIS_HASH 4
 #define REDIS_SET 2
 #define REDIS_ZSET 3
 #define REDIS_HASH 4

-#define REDIS_VMPOINTER 8

 
 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  * internally represented in multiple ways. The 'encoding' field of the object
 
 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  * internally represented in multiple ways. The 'encoding' field of the object


@@ -204,8 +207,8 @@
 #define AOF_FSYNC_EVERYSEC 2
 
 /* Zip structure related defaults */
 #define AOF_FSYNC_EVERYSEC 2
 
 /* Zip structure related defaults */

-#define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
-#define REDIS_HASH_MAX_ZIPMAP_VALUE 64
+#define REDIS_HASH_MAX_ZIPLIST_ENTRIES 512
+#define REDIS_HASH_MAX_ZIPLIST_VALUE 64

 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 #define REDIS_SET_MAX_INTSET_ENTRIES 512


@@ -237,6 +240,18 @@
                                        points are configured. */
 #define REDIS_SHUTDOWN_NOSAVE 2     /* Don't SAVE on SHUTDOWN. */
 
                                        points are configured. */
 #define REDIS_SHUTDOWN_NOSAVE 2     /* Don't SAVE on SHUTDOWN. */
 

+/* Command call flags, see call() function */
+#define REDIS_CALL_NONE 0
+#define REDIS_CALL_SLOWLOG 1
+#define REDIS_CALL_STATS 2
+#define REDIS_CALL_PROPAGATE 4
+#define REDIS_CALL_FULL (REDIS_CALL_SLOWLOG | REDIS_CALL_STATS | REDIS_CALL_PROPAGATE)
+
+/* Command propagation flags, see propagate() function */
+#define REDIS_PROPAGATE_NONE 0
+#define REDIS_PROPAGATE_AOF 1
+#define REDIS_PROPAGATE_REPL 2
+

 /* 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)))
 /* 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)))


@@ -308,6 +323,7 @@ typedef struct redisClient {
     redisDb *db;
     int dictid;
     sds querybuf;
     redisDb *db;
     int dictid;
     sds querybuf;

+    size_t querybuf_peak;   /* Recent (100ms or more) peak of querybuf size */

     int argc;
     robj **argv;
     struct redisCommand *cmd, *lastcmd;
     int argc;
     robj **argv;
     struct redisCommand *cmd, *lastcmd;


@@ -317,6 +333,7 @@ typedef struct redisClient {
     list *reply;
     unsigned long reply_bytes; /* Tot bytes of objects in reply list */
     int sentlen;
     list *reply;
     unsigned long reply_bytes; /* Tot bytes of objects in reply list */
     int sentlen;

+    time_t ctime;           /* Client creation time */

     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 ... */
     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 ... */


@@ -348,12 +365,13 @@ 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, *slowscripterr, *plus,
-    *select0, *select1, *select2, *select3, *select4,
-    *select5, *select6, *select7, *select8, *select9,
-    *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
-    *mbulk4, *psubscribebulk, *punsubscribebulk,
-    *integers[REDIS_SHARED_INTEGERS];
+    *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *bgsaveerr,
+    *roslaveerr, *oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk,
+    *unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *rpop, *lpop,
+    *select[REDIS_SHARED_SELECT_CMDS],
+    *integers[REDIS_SHARED_INTEGERS],
+    *mbulkhdr[REDIS_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
+    *bulkhdr[REDIS_SHARED_BULKHDR_LEN];  /* "$<value>\r\n" */

 };
 
 /* ZSETs use a specialized version of Skiplists */
 };
 
 /* ZSETs use a specialized version of Skiplists */


@@ -384,133 +402,29 @@ typedef struct clientBufferLimitsConfig {
     time_t soft_limit_seconds;
 } clientBufferLimitsConfig;
 
     time_t soft_limit_seconds;
 } clientBufferLimitsConfig;
 

-/*-----------------------------------------------------------------------------
- * Redis cluster data structures
- *----------------------------------------------------------------------------*/
-
-#define REDIS_CLUSTER_SLOTS 4096
-#define REDIS_CLUSTER_OK 0          /* Everything looks ok */
-#define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
-#define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */
-#define REDIS_CLUSTER_NAMELEN 40    /* sha1 hex length */
-#define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
-
-struct clusterNode;
-
-/* clusterLink encapsulates everything needed to talk with a remote node. */
-typedef struct clusterLink {
-    int fd;                     /* TCP socket file descriptor */
-    sds sndbuf;                 /* Packet send buffer */
-    sds rcvbuf;                 /* Packet reception buffer */
-    struct clusterNode *node;   /* Node related to this link if any, or NULL */
-} clusterLink;
-
-/* Node flags */
-#define REDIS_NODE_MASTER 1     /* The node is a master */
-#define REDIS_NODE_SLAVE 2      /* The node is a slave */
-#define REDIS_NODE_PFAIL 4      /* Failure? Need acknowledge */
-#define REDIS_NODE_FAIL 8       /* The node is believed to be malfunctioning */
-#define REDIS_NODE_MYSELF 16    /* This node is myself */
-#define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
-#define REDIS_NODE_NOADDR   64  /* We don't know the address of this node */
-#define REDIS_NODE_MEET 128     /* Send a MEET message to this node */
-#define REDIS_NODE_NULL_NAME "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
-
-struct clusterNode {
-    char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
-    int flags;      /* REDIS_NODE_... */
-    unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
-    int numslaves;  /* Number of slave nodes, if this is a master */
-    struct clusterNode **slaves; /* pointers to slave nodes */
-    struct clusterNode *slaveof; /* pointer to the master node */
-    time_t ping_sent;       /* Unix time we sent latest ping */
-    time_t pong_received;   /* Unix time we received the pong */
-    char *configdigest;         /* Configuration digest of this node */
-    time_t configdigest_ts;     /* Configuration digest timestamp */
-    char ip[16];                /* Latest known IP address of this node */
-    int port;                   /* Latest known port of this node */
-    clusterLink *link;          /* TCP/IP link with this node */
-};
-typedef struct clusterNode clusterNode;
-
-typedef struct {
-    char *configfile;
-    clusterNode *myself;  /* This node */
-    int state;            /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
-    int node_timeout;
-    dict *nodes;          /* Hash table of name -> clusterNode structures */
-    clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
-    clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
-    clusterNode *slots[REDIS_CLUSTER_SLOTS];
-    zskiplist *slots_to_keys;
-} clusterState;
-
-/* Redis cluster messages header */
-
-/* Note that the PING, PONG and MEET messages are actually the same exact
- * kind of packet. PONG is the reply to ping, in the extact format as a PING,
- * while MEET is a special PING that forces the receiver to add the sender
- * as a node (if it is not already in the list). */
-#define CLUSTERMSG_TYPE_PING 0          /* Ping */
-#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
- * address for all the next messages. */
-typedef struct {
-    char nodename[REDIS_CLUSTER_NAMELEN];
-    uint32_t ping_sent;
-    uint32_t pong_received;
-    char ip[16];    /* IP address last time it was seen */
-    uint16_t port;  /* port last time it was seen */
-    uint16_t flags;
-    uint32_t notused; /* for 64 bit alignment */
-} clusterMsgDataGossip;
-
-typedef struct {
-    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;
-
-    /* FAIL */
-    struct {
-        clusterMsgDataFail about;
-    } fail;
-
-    /* PUBLISH */
-    struct {
-        clusterMsgDataPublish msg;
-    } publish;
-};
+/* The redisOp structure defines a Redis Operation, that is an instance of
+ * a command with an argument vector, database ID, propagation target
+ * (REDIS_PROPAGATE_*), and command pointer.
+ *
+ * Currently only used to additionally propagate more commands to AOF/Replication
+ * after the propagation of the executed command. */
+typedef struct redisOp {
+    robj **argv;
+    int argc, dbid, target;
+    struct redisCommand *cmd;
+} redisOp;

 
 

-typedef struct {
-    uint32_t totlen;    /* Total length of this message */
-    uint16_t type;      /* Message type */
-    uint16_t count;     /* Only used for some kind of messages. */
-    char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
-    unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
-    char slaveof[REDIS_CLUSTER_NAMELEN];
-    char configdigest[32];
-    uint16_t port;      /* Sender TCP base port */
-    unsigned char state; /* Cluster state from the POV of the sender */
-    unsigned char notused[5]; /* Reserved for future use. For alignment. */
-    union clusterMsgData data;
-} clusterMsg;
+/* Defines an array of Redis operations. There is an API to add to this
+ * structure in a easy way.
+ *
+ * redisOpArrayInit();
+ * redisOpArrayAppend();
+ * redisOpArrayFree();
+ */
+typedef struct redisOpArray {
+    redisOp *ops;
+    int numops;
+} redisOpArray;

 
 /*-----------------------------------------------------------------------------
  * Global server state
 
 /*-----------------------------------------------------------------------------
  * Global server state


@@ -527,6 +441,9 @@ struct redisServer {
     int activerehashing;        /* Incremental rehash in serverCron() */
     char *requirepass;          /* Pass for AUTH command, or NULL */
     char *pidfile;              /* PID file path */
     int activerehashing;        /* Incremental rehash in serverCron() */
     char *requirepass;          /* Pass for AUTH command, or NULL */
     char *pidfile;              /* PID file path */

+    int arch_bits;              /* 32 or 64 depending on sizeof(long) */
+    int cronloops;              /* Number of times the cron function run */
+    char runid[REDIS_RUN_ID_SIZE+1];  /* ID always different at every exec. */

     /* Networking */
     int port;                   /* TCP listening port */
     char *bindaddr;             /* Bind address or NULL */
     /* Networking */
     int port;                   /* TCP listening port */
     char *bindaddr;             /* Bind address or NULL */


@@ -534,7 +451,6 @@ struct redisServer {
     mode_t unixsocketperm;      /* UNIX socket permission */
     int ipfd;                   /* TCP socket file descriptor */
     int sofd;                   /* Unix socket file descriptor */
     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 */
     list *clients;              /* List of active clients */
     list *clients_to_close;     /* Clients to close asynchronously */
     list *slaves, *monitors;    /* List of slaves and MONITORs */


@@ -546,9 +462,7 @@ struct redisServer {
     off_t loading_loaded_bytes;
     time_t loading_start_time;
     /* Fast pointers to often looked up command */
     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 */
-    time_t lastsave;                /* Unix time of last save succeeede */
+    struct redisCommand *delCommand, *multiCommand, *lpushCommand;

     /* Fields used only for stats */
     time_t stat_starttime;          /* Server start time */
     long long stat_numcommands;     /* Number of processed commands */
     /* Fields used only for stats */
     time_t stat_starttime;          /* Server start time */
     long long stat_numcommands;     /* Number of processed commands */


@@ -564,6 +478,12 @@ struct redisServer {
     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 */
     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 */

+    /* The following two are used to track instantaneous "load" in terms
+     * of operations per second. */
+    long long ops_sec_last_sample_time; /* Timestamp of last sample (in ms) */
+    long long ops_sec_last_sample_ops;  /* numcommands in last sample */
+    long long ops_sec_samples[REDIS_OPS_SEC_SAMPLES];
+    int ops_sec_idx;

     /* Configuration */
     int verbosity;                  /* Loglevel in redis.conf */
     int maxidletime;                /* Client timeout in seconds */
     /* Configuration */
     int verbosity;                  /* Loglevel in redis.conf */
     int maxidletime;                /* Client timeout in seconds */


@@ -588,6 +508,7 @@ struct redisServer {
     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() */
     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() */

+    unsigned long aof_delayed_fsync;  /* delayed AOF fsync() counter */

     /* RDB persistence */
     long long dirty;                /* Changes to DB from the last save */
     long long dirty_before_bgsave;  /* Used to restore dirty on failed BGSAVE */
     /* RDB persistence */
     long long dirty;                /* Changes to DB from the last save */
     long long dirty_before_bgsave;  /* Used to restore dirty on failed BGSAVE */


@@ -596,6 +517,11 @@ struct redisServer {
     int saveparamslen;              /* Number of saving points */
     char *rdb_filename;             /* Name of RDB file */
     int rdb_compression;            /* Use compression in RDB? */
     int saveparamslen;              /* Number of saving points */
     char *rdb_filename;             /* Name of RDB file */
     int rdb_compression;            /* Use compression in RDB? */

+    time_t lastsave;                /* Unix time of last save succeeede */
+    int lastbgsave_status;          /* REDIS_OK or REDIS_ERR */
+    int stop_writes_on_bgsave_err;  /* Don't allow writes if can't BGSAVE */
+    /* Propagation of commands in AOF / replication */
+    redisOpArray also_propagate;    /* Additional command to propagate. */

     /* Logging */
     char *logfile;                  /* Path of log file */
     int syslog_enabled;             /* Is syslog enabled? */
     /* Logging */
     char *logfile;                  /* Path of log file */
     int syslog_enabled;             /* Is syslog enabled? */


@@ -616,6 +542,7 @@ struct redisServer {
     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? */
     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_slave_ro;          /* Slave is read only? */

     time_t repl_down_since; /* Unix time at which link with master went down */
     /* Limits */
     unsigned int maxclients;        /* Max number of simultaneous clients */
     time_t repl_down_since; /* Unix time at which link with master went down */
     /* Limits */
     unsigned int maxclients;        /* Max number of simultaneous clients */


@@ -627,12 +554,13 @@ struct redisServer {
     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() */
     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_dontsort;

     int sort_desc;
     int sort_alpha;
     int sort_bypattern;
     /* Zip structure config, see redis.conf for more information  */
     int sort_desc;
     int sort_alpha;
     int sort_bypattern;
     /* Zip structure config, see redis.conf for more information  */

-    size_t hash_max_zipmap_entries;
-    size_t hash_max_zipmap_value;
+    size_t hash_max_ziplist_entries;
+    size_t hash_max_ziplist_value;

     size_t list_max_ziplist_entries;
     size_t list_max_ziplist_value;
     size_t set_max_intset_entries;
     size_t list_max_ziplist_entries;
     size_t list_max_ziplist_value;
     size_t set_max_intset_entries;


@@ -642,9 +570,6 @@ struct redisServer {
     /* Pubsub */
     dict *pubsub_channels;  /* Map channels to list of subscribed clients */
     list *pubsub_patterns;  /* A list of pubsub_patterns */
     /* Pubsub */
     dict *pubsub_channels;  /* Map channels to list of subscribed clients */
     list *pubsub_patterns;  /* A list of pubsub_patterns */

-    /* 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 */
     redisClient *lua_client;   /* The "fake client" to query Redis from Lua */
     /* 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 */


@@ -664,6 +589,7 @@ struct redisServer {
     char *assert_file;
     int assert_line;
     int bug_report_start; /* True if bug report header was already logged. */
     char *assert_file;
     int assert_line;
     int bug_report_start; /* True if bug report header was already logged. */

+    int watchdog_period;  /* Software watchdog period in ms. 0 = off */

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


@@ -679,8 +605,7 @@ struct redisCommand {
     int arity;
     char *sflags; /* Flags as string represenation, one char per flag. */
     int flags;    /* The actual flags, obtained from the 'sflags' field. */
     int arity;
     char *sflags; /* Flags as string represenation, one char per flag. */
     int flags;    /* The actual flags, obtained from the 'sflags' field. */

-    /* Use a function to determine keys arguments in a command line.
-     * Used for Redis Cluster redirect. */
+    /* Use a function to determine keys arguments in a command line. */

     redisGetKeysProc *getkeys_proc;
     /* What keys should be loaded in background when calling this command? */
     int firstkey; /* The first argument that's a key (0 = no keys) */
     redisGetKeysProc *getkeys_proc;
     /* What keys should be loaded in background when calling this command? */
     int firstkey; /* The first argument that's a key (0 = no keys) */


@@ -736,10 +661,10 @@ typedef struct {
  * not both are required, store pointers in the iterator to avoid
  * unnecessary memory allocation for fields/values. */
 typedef struct {
  * not both are required, store pointers in the iterator to avoid
  * unnecessary memory allocation for fields/values. */
 typedef struct {

+    robj *subject;

     int encoding;
     int encoding;

-    unsigned char *zi;
-    unsigned char *zk, *zv;
-    unsigned int zklen, zvlen;
+
+    unsigned char *fptr, *vptr;

 
     dictIterator *di;
     dictEntry *de;
 
     dictIterator *di;
     dictEntry *de;


@@ -756,10 +681,9 @@ extern struct redisServer server;
 extern struct sharedObjectsStruct shared;
 extern dictType setDictType;
 extern dictType zsetDictType;
 extern struct sharedObjectsStruct shared;
 extern dictType setDictType;
 extern dictType zsetDictType;

-extern dictType clusterNodesDictType;

 extern dictType dbDictType;
 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 extern dictType dbDictType;
 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;

-dictType hashDictType;
+extern dictType hashDictType;

 
 /*-----------------------------------------------------------------------------
  * Functions prototypes
 
 /*-----------------------------------------------------------------------------
  * Functions prototypes


@@ -768,6 +692,9 @@ dictType hashDictType;
 /* Utils */
 long long ustime(void);
 long long mstime(void);
 /* Utils */
 long long ustime(void);
 long long mstime(void);

+void getRandomHexChars(char *p, unsigned int len);
+uint64_t crc64(const unsigned char *s, uint64_t l);
+void exitFromChild(int retcode);

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


@@ -808,6 +735,8 @@ void freeClientsInAsyncFreeQueue(void);
 void asyncCloseClientOnOutputBufferLimitReached(redisClient *c);
 int getClientLimitClassByName(char *name);
 char *getClientLimitClassName(int class);
 void asyncCloseClientOnOutputBufferLimitReached(redisClient *c);
 int getClientLimitClassByName(char *name);
 char *getClientLimitClassName(int class);

+void flushSlavesOutputBuffers(void);
+void disconnectSlaves(void);

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


@@ -843,6 +772,7 @@ void freeClientMultiState(redisClient *c);
 void queueMultiCommand(redisClient *c);
 void touchWatchedKey(redisDb *db, robj *key);
 void touchWatchedKeysOnFlush(int dbid);
 void queueMultiCommand(redisClient *c);
 void touchWatchedKey(redisDb *db, robj *key);
 void touchWatchedKeysOnFlush(int dbid);

+void discardTransaction(redisClient *c);

 
 /* Redis object implementation */
 void decrRefCount(void *o);
 
 /* Redis object implementation */
 void decrRefCount(void *o);


@@ -882,13 +812,13 @@ int equalStringObjects(robj *a, robj *b);
 unsigned long estimateObjectIdleTime(robj *o);
 
 /* Synchronous I/O with timeout */
 unsigned long estimateObjectIdleTime(robj *o);
 
 /* Synchronous I/O with timeout */

-int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
-int syncRead(int fd, char *ptr, ssize_t size, int timeout);
-int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
+ssize_t syncWrite(int fd, char *ptr, ssize_t size, long long timeout);
+ssize_t syncRead(int fd, char *ptr, ssize_t size, long long timeout);
+ssize_t syncReadLine(int fd, char *ptr, ssize_t size, long long timeout);

 
 /* Replication */
 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 
 /* Replication */
 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);

-void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
+void replicationFeedMonitors(redisClient *c, list *monitors, int dictid, robj **argv, int argc);

 void updateSlavesWaitingBgsave(int bgsaveerr);
 void replicationCron(void);
 
 void updateSlavesWaitingBgsave(int bgsaveerr);
 void replicationCron(void);
 


@@ -931,15 +861,18 @@ unsigned int zsetLength(robj *zobj);
 void zsetConvert(robj *zobj, int encoding);
 
 /* Core functions */
 void zsetConvert(robj *zobj, int encoding);
 
 /* Core functions */

-void freeMemoryIfNeeded(void);
+int freeMemoryIfNeeded(void);

 int processCommand(redisClient *c);
 void setupSignalHandlers(void);
 struct redisCommand *lookupCommand(sds name);
 struct redisCommand *lookupCommandByCString(char *s);
 int processCommand(redisClient *c);
 void setupSignalHandlers(void);
 struct redisCommand *lookupCommand(sds name);
 struct redisCommand *lookupCommandByCString(char *s);

-void call(redisClient *c);
+void call(redisClient *c, int flags);
+void propagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int flags);
+void alsoPropagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int target);

 int prepareForShutdown();
 void redisLog(int level, const char *fmt, ...);
 void redisLogRaw(int level, const char *msg);
 int prepareForShutdown();
 void redisLog(int level, const char *fmt, ...);
 void redisLogRaw(int level, const char *msg);

+void redisLogFromHandler(int level, const char *msg);

 void usage();
 void updateDictResizePolicy(void);
 int htNeedsResize(dict *dict);
 void usage();
 void updateDictResizePolicy(void);
 int htNeedsResize(dict *dict);


@@ -961,10 +894,9 @@ unsigned long setTypeSize(robj *subject);
 void setTypeConvert(robj *subject, int enc);
 
 /* Hash data type */
 void setTypeConvert(robj *subject, int enc);
 
 /* Hash data type */

-void convertToRealHash(robj *o);
+void hashTypeConvert(robj *o, int enc);

 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);

-int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);

 robj *hashTypeGetObject(robj *o, robj *key);
 int hashTypeExists(robj *o, robj *key);
 int hashTypeSet(robj *o, robj *key, robj *value);
 robj *hashTypeGetObject(robj *o, robj *key);
 int hashTypeExists(robj *o, robj *key);
 int hashTypeSet(robj *o, robj *key, robj *value);


@@ -973,7 +905,11 @@ unsigned long hashTypeLength(robj *o);
 hashTypeIterator *hashTypeInitIterator(robj *subject);
 void hashTypeReleaseIterator(hashTypeIterator *hi);
 int hashTypeNext(hashTypeIterator *hi);
 hashTypeIterator *hashTypeInitIterator(robj *subject);
 void hashTypeReleaseIterator(hashTypeIterator *hi);
 int hashTypeNext(hashTypeIterator *hi);

-int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
+void hashTypeCurrentFromZiplist(hashTypeIterator *hi, int what,
+                                unsigned char **vstr,
+                                unsigned int *vlen,
+                                long long *vll);
+void hashTypeCurrentFromHashTable(hashTypeIterator *hi, int what, robj **dst);

 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 
 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 


@@ -1021,16 +957,6 @@ int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numke
 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 
 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 

-/* Cluster */
-void clusterInit(void);
-unsigned short crc16(const char *buf, int len);
-unsigned int keyHashSlot(char *key, int keylen);
-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);
-void clusterPropagatePublish(robj *channel, robj *message);
-

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


@@ -1162,16 +1088,15 @@ void punsubscribeCommand(redisClient *c);
 void publishCommand(redisClient *c);
 void watchCommand(redisClient *c);
 void unwatchCommand(redisClient *c);
 void publishCommand(redisClient *c);
 void watchCommand(redisClient *c);
 void unwatchCommand(redisClient *c);

-void clusterCommand(redisClient *c);

 void restoreCommand(redisClient *c);
 void migrateCommand(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 scriptCommand(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);

+void timeCommand(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));


@@ -1188,4 +1113,7 @@ void bugReportStart(void);
 void redisLogObjectDebugInfo(robj *o);
 void sigsegvHandler(int sig, siginfo_t *info, void *secret);
 sds genRedisInfoString(char *section);
 void redisLogObjectDebugInfo(robj *o);
 void sigsegvHandler(int sig, siginfo_t *info, void *secret);
 sds genRedisInfoString(char *section);

+void enableWatchdog(int period);
+void disableWatchdog(void);
+void watchdogScheduleSignal(int period);

 #endif
 #endif