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#ifndef __REDIS_H
#define __REDIS_H
#include "fmacros.h"
#include "config.h"
#if defined(__sun)
#include "solarisfixes.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <limits.h>
#include <unistd.h>
#include <errno.h>
#include <inttypes.h>
#include <pthread.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 "dict.h" /* Hash tables */
#include "adlist.h" /* Linked lists */
#include "zmalloc.h" /* total memory usage aware version of malloc/free */
#include "anet.h" /* Networking the easy way */
#include "ziplist.h" /* Compact list data structure */
#include "intset.h" /* Compact integer set structure */
#include "version.h" /* Version macro */
#include "util.h" /* Misc functions useful in many places */
/* Error codes */
#define REDIS_OK 0
#define REDIS_ERR -1
/* Static server configuration */
#define REDIS_HZ 100 /* Time interrupt calls/sec. */
#define REDIS_SERVERPORT 6379 /* TCP port */
#define REDIS_MAXIDLETIME 0 /* default client timeout: infinite */
#define REDIS_EXPIRELOOKUPS_PER_CRON 10 /* lookup 10 expires per loop */
#define REDIS_EXPIRELOOKUPS_TIME_PERC 25 /* CPU max % for keys collection */
#define REDIS_MAX_WRITE_PER_EVENT (1024*64)
#define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */
#define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
#define REDIS_MAX_CLIENTS 10000
#define REDIS_RUN_ID_SIZE 40
/* 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% */
/* Command flags. Please check the command table defined in the redis.c file
* for more information about the meaning of every flag. */
#define REDIS_CMD_WRITE 1 /* "w" flag */
#define REDIS_CMD_READONLY 2 /* "r" flag */
#define REDIS_CMD_DENYOOM 4 /* "m" flag */
#define REDIS_CMD_FORCE_REPLICATION 8 /* "f" flag */
#define REDIS_CMD_ADMIN 16 /* "a" flag */
#define REDIS_CMD_PUBSUB 32 /* "p" flag */
#define REDIS_CMD_NOSCRIPT 64 /* "s" flag */
#define REDIS_CMD_RANDOM 128 /* "R" flag */
#define REDIS_CMD_SORT_FOR_SCRIPT 256 /* "S" flag */
#define REDIS_CMD_LOADING 512 /* "l" flag */
#define REDIS_CMD_STALE 1024 /* "t" flag */
/* Object types */
#define REDIS_STRING 0
#define REDIS_LIST 1
#define REDIS_SET 2
#define REDIS_ZSET 3
#define REDIS_HASH 4
/* Objects encoding. Some kind of objects like Strings and Hashes can be
* internally represented in multiple ways. The 'encoding' field of the object
* is set to one of this fields for this object. */
#define REDIS_ENCODING_RAW 0 /* Raw representation */
#define REDIS_ENCODING_INT 1 /* Encoded as integer */
#define REDIS_ENCODING_HT 2 /* Encoded as hash table */
#define REDIS_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
#define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
#define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
#define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
#define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
/* 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:
* 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
* 01|000000 00000000 => 01, the len is 14 byes, 6 bits + 8 bits of next byte
* 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
* 11|000000 this means: specially encoded object will follow. The six bits
* number specify the kind of object that follows.
* See the REDIS_RDB_ENC_* defines.
* Lenghts up to 63 are stored using a single byte, most DB keys, and may
* values, will fit inside. */
#define REDIS_RDB_14BITLEN 1
#define REDIS_RDB_32BITLEN 2
/* When a length of a string object stored on disk has the first two bits
* set, the remaining two bits specify a special encoding for the object
* accordingly to the following defines: */
#define REDIS_RDB_ENC_INT8 0 /* 8 bit signed integer */
#define REDIS_RDB_ENC_INT16 1 /* 16 bit signed integer */
#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 */
#define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
#define REDIS_MULTI 8 /* This client is in a MULTI context */
#define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
#define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
#define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
#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 */
/* Client classes for client limits, currently used only for
* the max-client-output-buffer limit implementation. */
/* Slave replication state - slave side */
#define REDIS_REPL_NONE 0 /* No active replication */
#define REDIS_REPL_CONNECT 1 /* Must connect to master */
#define REDIS_REPL_CONNECTING 2 /* Connecting to master */
#define REDIS_REPL_RECEIVE_PONG 3 /* Wait for PING reply */
#define REDIS_REPL_TRANSFER 4 /* Receiving .rdb from master */
#define REDIS_REPL_CONNECTED 5 /* Connected to master */
/* Synchronous read timeout - slave side */
/* Slave replication state - from the point of view of master
* Note that in SEND_BULK and ONLINE state the slave receives new updates
* in its output queue. In the WAIT_BGSAVE state instead the server is waiting
* to start the next background saving in order to send updates to it. */
#define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
#define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
#define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
#define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
/* List related stuff */
#define REDIS_HEAD 0
#define REDIS_TAIL 1
/* Sort operations */
#define REDIS_SORT_GET 0
#define REDIS_SORT_ASC 1
#define REDIS_SORTKEY_MAX 1024
/* Log levels */
#define REDIS_DEBUG 0
#define REDIS_NOTICE 2
#define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
/* Anti-warning macro... */
#define REDIS_NOTUSED(V) ((void) V)
#define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
#define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
/* Append only defines */
#define AOF_FSYNC_NO 0
/* Zip structure related defaults */
/* Sets operations codes */
#define REDIS_OP_UNION 0
#define REDIS_OP_DIFF 1
#define REDIS_OP_INTER 2
/* Redis maxmemory strategies */
/* Scripting */
#define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
/* Units */
#define UNIT_SECONDS 0
/* SHUTDOWN flags */
#define REDIS_SHUTDOWN_SAVE 1 /* Force SAVE on SHUTDOWN even if no save
points are configured. */
/* Command call flags, see call() function */
/* Command propagation flags, see propagate() function */
/* Using the following macro you can run code inside serverCron() with the
* specified period, specified in milliseconds.
* The actual resolution depends on REDIS_HZ. */
#define run_with_period(_ms_) if (!(server.cronloops%((_ms_)/(1000/REDIS_HZ))))
/* 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)
* Data types
/* A redis object, that is a type able to hold a string / list / set */
/* The actual Redis Object */
#define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
#define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
typedef struct redisObject {
unsigned type:4;
unsigned notused:2; /* Not used */
unsigned encoding:4;
unsigned lru:22; /* lru time (relative to server.lruclock) */
int refcount;
void *ptr;
} robj;
/* Macro used to initalize a Redis object allocated on the stack.
* Note that this macro is taken near the structure definition to make sure
* we'll update it when the structure is changed, to avoid bugs like
* bug #85 introduced exactly in this way. */
#define initStaticStringObject(_var,_ptr) do { \
_var.refcount = 1; \
_var.type = REDIS_STRING; \
_var.encoding = REDIS_ENCODING_RAW; \
_var.ptr = _ptr; \
} while(0);
typedef struct redisDb {
dict *dict; /* The keyspace for this DB */
dict *expires; /* Timeout of keys with a timeout set */
dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */
dict *ready_keys; /* Blocked keys that received a PUSH */
dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
int id;
} redisDb;
/* Client MULTI/EXEC state */
typedef struct multiCmd {
robj **argv;
int argc;
struct redisCommand *cmd;
} multiCmd;
typedef struct multiState {
multiCmd *commands; /* Array of MULTI commands */
int count; /* Total number of MULTI commands */
} multiState;
typedef struct blockingState {
robj **keys; /* The key we are waiting to terminate a blocking
* operation such as BLPOP. Otherwise NULL. */
int count; /* Number of blocking keys */
time_t timeout; /* Blocking operation timeout. If UNIX current time
* is >= timeout then the operation timed out. */
robj *target; /* The key that should receive the element,
* for BRPOPLPUSH. */
} blockingState;
/* The following structure represents a node in the server.ready_keys list,
* where we accumulate all the keys that had clients blocked with a blocking
* operation such as B[LR]POP, but received new data in the context of the
* last executed command.
* After the execution of every command or script, we run this list to check
* if as a result we should serve data to clients blocked, unblocking them.
* Note that server.ready_keys will not have duplicates as there dictionary
* also called ready_keys in every structure representing a Redis database,
* where we make sure to remember if a given key was already added in the
* server.ready_keys list. */
typedef struct readyList {
redisDb *db;
robj *key;
} readyList;
/* With multiplexing we need to take per-clinet state.
* Clients are taken in a liked list. */
typedef struct redisClient {
int fd;
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 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 ctime; /* Client creation time */
time_t lastinteraction; /* time of the last interaction, used for timeout */
time_t obuf_soft_limit_reached_time;
int slaveseldb; /* slave selected db, if this client is a slave */
int authenticated; /* when requirepass is non-NULL */
int replstate; /* replication state if this is a slave */
int repldbfd; /* replication DB file descriptor */
long repldboff; /* replication DB file offset */
off_t repldbsize; /* replication DB file size */
int slave_listening_port; /* As configured with: SLAVECONF listening-port */
multiState mstate; /* MULTI/EXEC state */
blockingState bpop; /* blocking state */
list *io_keys; /* Keys this client is waiting to be loaded from the
* swap file in order to continue. */
list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
/* Response buffer */
int bufpos;
} redisClient;
struct saveparam {
time_t seconds;
int changes;
struct sharedObjectsStruct {
robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
*colon, *nullbulk, *nullmultibulk, *queued,
*emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
*outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *bgsaveerr,
*masterdownerr, *roslaveerr,
*oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk,
*unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *rpop, *lpop,
*mbulkhdr[REDIS_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
*bulkhdr[REDIS_SHARED_BULKHDR_LEN]; /* "$<value>\r\n" */
/* ZSETs use a specialized version of Skiplists */
typedef struct zskiplistNode {
robj *obj;
double score;
struct zskiplistNode *backward;
struct zskiplistLevel {
struct zskiplistNode *forward;
unsigned int span;
} level[];
} zskiplistNode;
typedef struct zskiplist {
struct zskiplistNode *header, *tail;
unsigned long length;
int level;
} zskiplist;
typedef struct zset {
dict *dict;
zskiplist *zsl;
} zset;
typedef struct clientBufferLimitsConfig {
unsigned long long hard_limit_bytes;
unsigned long long soft_limit_bytes;
time_t soft_limit_seconds;
} clientBufferLimitsConfig;
/* 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;
/* 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;
* Redis cluster data structures
#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 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 {
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 {
} 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;
struct {
clusterMsgDataPublish msg;
} publish;
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 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;
* Global server state
struct redisServer {
/* General */
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 */
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. */
int sentinel_mode; /* True if this instance is a Sentinel. */
/* Networking */
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 */
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, *lpushCommand, *lpopCommand,
/* 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() */
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 */
/* 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 */
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 */
list *aof_rewrite_buf_blocks; /* Hold changes during an AOF 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() */
time_t aof_rewrite_time_last; /* Time used by last AOF rewrite run. */
time_t aof_rewrite_time_start; /* Current AOF rewrite start time. */
int aof_lastbgrewrite_status; /* REDIS_OK or REDIS_ERR */
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 */
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? */
int rdb_checksum; /* Use RDB checksum? */
time_t lastsave; /* Unix time of last save succeeede */
time_t rdb_save_time_last; /* Time used by last RDB save run. */
time_t rdb_save_time_start; /* Current RDB save start time. */
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? */
char *syslog_ident; /* Syslog ident */
int syslog_facility; /* Syslog facility */
/* Slave specific fields */
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 slave 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_size; /* Size of RDB to read from master during sync. */
off_t repl_transfer_read; /* Amount of RDB read from master during sync. */
off_t repl_transfer_last_fsync_off; /* Offset when we fsync-ed last time. */
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_slave_ro; /* Slave is read only? */
time_t repl_down_since; /* Unix time at which link with master went down */
int slave_priority; /* Reported in INFO and used by Sentinel. */
/* Limits */
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 */
unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
list *unblocked_clients; /* list of clients to unblock before next loop */
list *ready_keys; /* List of readyList structures for BLPOP & co */
/* 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, see redis.conf for more information */
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 zset_max_ziplist_entries;
size_t zset_max_ziplist_value;
time_t unixtime; /* Unix time sampled every second. */
/* 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 */
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. */
int watchdog_period; /* Software watchdog period in ms. 0 = off */
typedef struct pubsubPattern {
redisClient *client;
robj *pattern;
} pubsubPattern;
typedef void redisCommandProc(redisClient *c);
typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
struct redisCommand {
char *name;
redisCommandProc *proc;
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. */
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) */
int lastkey; /* THe last argument that's a key */
int keystep; /* The step between first and last key */
long long microseconds, calls;
struct redisFunctionSym {
char *name;
unsigned long pointer;
typedef struct _redisSortObject {
robj *obj;
union {
double score;
robj *cmpobj;
} u;
} redisSortObject;
typedef struct _redisSortOperation {
int type;
robj *pattern;
} redisSortOperation;
/* Structure to hold list iteration abstraction. */
typedef struct {
robj *subject;
unsigned char encoding;
unsigned char direction; /* Iteration direction */
unsigned char *zi;
listNode *ln;
} listTypeIterator;
/* Structure for an entry while iterating over a list. */
typedef struct {
listTypeIterator *li;
unsigned char *zi; /* Entry in ziplist */
listNode *ln; /* Entry in linked list */
} listTypeEntry;
/* Structure to hold set iteration abstraction. */
typedef struct {
robj *subject;
int encoding;
int ii; /* intset iterator */
dictIterator *di;
} setTypeIterator;
/* Structure to hold hash iteration abstration. Note that iteration over
* hashes involves both fields and values. Because it is possible that
* not both are required, store pointers in the iterator to avoid
* unnecessary memory allocation for fields/values. */
typedef struct {
robj *subject;
int encoding;
unsigned char *fptr, *vptr;
dictIterator *di;
dictEntry *de;
} hashTypeIterator;
#define REDIS_HASH_KEY 1
* Extern declarations
extern struct redisServer server;
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 hashDictType;
* Functions prototypes
/* Utils */
long long ustime(void);
long long mstime(void);
void getRandomHexChars(char *p, unsigned int len);
uint64_t crc64(uint64_t crc, const unsigned char *s, uint64_t l);
void exitFromChild(int retcode);
/* networking.c -- Networking and Client related operations */
redisClient *createClient(int fd);
void closeTimedoutClients(void);
void freeClient(redisClient *c);
void resetClient(redisClient *c);
void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
void addReply(redisClient *c, robj *obj);
void *addDeferredMultiBulkLength(redisClient *c);
void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
void addReplySds(redisClient *c, sds s);
void processInputBuffer(redisClient *c);
void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
void addReplyBulk(redisClient *c, robj *obj);
void addReplyBulkCString(redisClient *c, char *s);
void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
void addReplyBulkLongLong(redisClient *c, long long ll);
void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
void addReply(redisClient *c, robj *obj);
void addReplySds(redisClient *c, sds s);
void addReplyError(redisClient *c, char *err);
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 copyClientOutputBuffer(redisClient *dst, redisClient *src);
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);
unsigned long getClientOutputBufferMemoryUsage(redisClient *c);
void freeClientsInAsyncFreeQueue(void);
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, ...)
__attribute__((format(printf, 2, 3)));
void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
__attribute__((format(printf, 2, 3)));
void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
/* List data type */
void listTypeTryConversion(robj *subject, robj *value);
void listTypePush(robj *subject, robj *value, int where);
robj *listTypePop(robj *subject, int where);
unsigned long listTypeLength(robj *subject);
listTypeIterator *listTypeInitIterator(robj *subject, long index, unsigned char direction);
void listTypeReleaseIterator(listTypeIterator *li);
int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
robj *listTypeGet(listTypeEntry *entry);
void listTypeInsert(listTypeEntry *entry, robj *value, int where);
int listTypeEqual(listTypeEntry *entry, robj *o);
void listTypeDelete(listTypeEntry *entry);
void listTypeConvert(robj *subject, int enc);
void unblockClientWaitingData(redisClient *c);
void handleClientsBlockedOnLists(void);
void popGenericCommand(redisClient *c, int where);
void unwatchAllKeys(redisClient *c);
void initClientMultiState(redisClient *c);
void freeClientMultiState(redisClient *c);
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);
void incrRefCount(robj *o);
robj *resetRefCount(robj *obj);
void freeStringObject(robj *o);
void freeListObject(robj *o);
void freeSetObject(robj *o);
void freeZsetObject(robj *o);
void freeHashObject(robj *o);
robj *createObject(int type, void *ptr);
robj *createStringObject(char *ptr, size_t len);
robj *dupStringObject(robj *o);
int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
robj *tryObjectEncoding(robj *o);
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 *createIntsetObject(void);
robj *createHashObject(void);
robj *createZsetObject(void);
robj *createZsetZiplistObject(void);
int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
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 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);
unsigned long estimateObjectIdleTime(robj *o);
/* Synchronous I/O with 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);
void replicationFeedMonitors(redisClient *c, list *monitors, int dictid, robj **argv, int argc);
void updateSlavesWaitingBgsave(int bgsaveerr);
void replicationCron(void);
/* Generic persistence functions */
void startLoading(FILE *fp);
void loadingProgress(off_t pos);
void stopLoading(void);
/* RDB persistence */
#include "rdb.h"
/* AOF persistence */
void flushAppendOnlyFile(int force);
void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
void aofRemoveTempFile(pid_t childpid);
int rewriteAppendOnlyFileBackground(void);
int loadAppendOnlyFile(char *filename);
void stopAppendOnly(void);
int startAppendOnly(void);
void backgroundRewriteDoneHandler(int exitcode, int bysignal);
void aofRewriteBufferReset(void);
unsigned long aofRewriteBufferSize(void);
/* Sorted sets data type */
/* Struct to hold a inclusive/exclusive range spec. */
typedef struct {
double min, max;
int minex, maxex; /* are min or max exclusive? */
} zrangespec;
zskiplist *zslCreate(void);
void zslFree(zskiplist *zsl);
zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
int zslDelete(zskiplist *zsl, double score, robj *obj);
zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
double zzlGetScore(unsigned char *sptr);
void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
unsigned int zsetLength(robj *zobj);
void zsetConvert(robj *zobj, int encoding);
/* Core functions */
int freeMemoryIfNeeded(void);
int processCommand(redisClient *c);
void setupSignalHandlers(void);
struct redisCommand *lookupCommand(sds name);
struct redisCommand *lookupCommandByCString(char *s);
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);
void redisLogFromHandler(int level, const char *msg);
void usage();
void updateDictResizePolicy(void);
int htNeedsResize(dict *dict);
void oom(const char *msg);
void populateCommandTable(void);
void resetCommandTableStats(void);
/* Set data type */
robj *setTypeCreate(robj *value);
int setTypeAdd(robj *subject, robj *value);
int setTypeRemove(robj *subject, robj *value);
int setTypeIsMember(robj *subject, robj *value);
setTypeIterator *setTypeInitIterator(robj *subject);
void setTypeReleaseIterator(setTypeIterator *si);
int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
robj *setTypeNextObject(setTypeIterator *si);
int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
unsigned long setTypeSize(robj *subject);
void setTypeConvert(robj *subject, int enc);
/* Hash data type */
void hashTypeConvert(robj *o, int enc);
void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
robj *hashTypeGetObject(robj *o, robj *key);
int hashTypeExists(robj *o, robj *key);
int hashTypeSet(robj *o, robj *key, robj *value);
int hashTypeDelete(robj *o, robj *key);
unsigned long hashTypeLength(robj *o);
hashTypeIterator *hashTypeInitIterator(robj *subject);
void hashTypeReleaseIterator(hashTypeIterator *hi);
int hashTypeNext(hashTypeIterator *hi);
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);
/* Pub / Sub */
int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
void freePubsubPattern(void *p);
int listMatchPubsubPattern(void *a, void *b);
int pubsubPublishMessage(robj *channel, robj *message);
/* Configuration */
void loadServerConfig(char *filename, char *options);
void appendServerSaveParams(time_t seconds, int changes);
void resetServerSaveParams();
/* db.c -- Keyspace access API */
int removeExpire(redisDb *db, robj *key);
void propagateExpire(redisDb *db, robj *key);
int expireIfNeeded(redisDb *db, robj *key);
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 *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
void dbAdd(redisDb *db, robj *key, robj *val);
void dbOverwrite(redisDb *db, robj *key, robj *val);
void setKey(redisDb *db, robj *key, robj *val);
int dbExists(redisDb *db, robj *key);
robj *dbRandomKey(redisDb *db);
int dbDelete(redisDb *db, robj *key);
long long emptyDb();
int selectDb(redisClient *c, int id);
void signalModifiedKey(redisDb *db, robj *key);
void signalFlushedDb(int dbid);
unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
/* API to get key arguments from commands */
int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
void getKeysFreeResult(int *result);
int *noPreloadGetKeys(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);
/* Sentinel */
void initSentinelConfig(void);
void initSentinel(void);
void sentinelTimer(void);
char *sentinelHandleConfiguration(char **argv, int argc);
/* Scripting */
void scriptingInit(void);
/* Git SHA1 */
char *redisGitSHA1(void);
char *redisGitDirty(void);
/* Commands prototypes */
void authCommand(redisClient *c);
void pingCommand(redisClient *c);
void echoCommand(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 setbitCommand(redisClient *c);
void getbitCommand(redisClient *c);
void setrangeCommand(redisClient *c);
void getrangeCommand(redisClient *c);
void incrCommand(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 dbsizeCommand(redisClient *c);
void lastsaveCommand(redisClient *c);
void saveCommand(redisClient *c);
void bgsaveCommand(redisClient *c);
void bgrewriteaofCommand(redisClient *c);
void shutdownCommand(redisClient *c);
void moveCommand(redisClient *c);
void renameCommand(redisClient *c);
void renamenxCommand(redisClient *c);
void lpushCommand(redisClient *c);
void rpushCommand(redisClient *c);
void lpushxCommand(redisClient *c);
void rpushxCommand(redisClient *c);
void linsertCommand(redisClient *c);
void lpopCommand(redisClient *c);
void rpopCommand(redisClient *c);
void llenCommand(redisClient *c);
void lindexCommand(redisClient *c);
void lrangeCommand(redisClient *c);
void ltrimCommand(redisClient *c);
void typeCommand(redisClient *c);
void lsetCommand(redisClient *c);
void saddCommand(redisClient *c);
void sremCommand(redisClient *c);
void smoveCommand(redisClient *c);
void sismemberCommand(redisClient *c);
void scardCommand(redisClient *c);
void spopCommand(redisClient *c);
void srandmemberCommand(redisClient *c);
void sinterCommand(redisClient *c);
void sinterstoreCommand(redisClient *c);
void sunionCommand(redisClient *c);
void sunionstoreCommand(redisClient *c);
void sdiffCommand(redisClient *c);
void sdiffstoreCommand(redisClient *c);
void syncCommand(redisClient *c);
void flushdbCommand(redisClient *c);
void flushallCommand(redisClient *c);
void sortCommand(redisClient *c);
void lremCommand(redisClient *c);
void rpoplpushCommand(redisClient *c);
void infoCommand(redisClient *c);
void mgetCommand(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 pttlCommand(redisClient *c);
void persistCommand(redisClient *c);
void slaveofCommand(redisClient *c);
void debugCommand(redisClient *c);
void msetCommand(redisClient *c);
void msetnxCommand(redisClient *c);
void zaddCommand(redisClient *c);
void zincrbyCommand(redisClient *c);
void zrangeCommand(redisClient *c);
void zrangebyscoreCommand(redisClient *c);
void zrevrangebyscoreCommand(redisClient *c);
void zcountCommand(redisClient *c);
void zrevrangeCommand(redisClient *c);
void zcardCommand(redisClient *c);
void zremCommand(redisClient *c);
void zscoreCommand(redisClient *c);
void zremrangebyscoreCommand(redisClient *c);
void multiCommand(redisClient *c);
void execCommand(redisClient *c);
void discardCommand(redisClient *c);
void blpopCommand(redisClient *c);
void brpopCommand(redisClient *c);
void brpoplpushCommand(redisClient *c);
void appendCommand(redisClient *c);
void strlenCommand(redisClient *c);
void zrankCommand(redisClient *c);
void zrevrankCommand(redisClient *c);
void hsetCommand(redisClient *c);
void hsetnxCommand(redisClient *c);
void hgetCommand(redisClient *c);
void hmsetCommand(redisClient *c);
void hmgetCommand(redisClient *c);
void hdelCommand(redisClient *c);
void hlenCommand(redisClient *c);
void zremrangebyrankCommand(redisClient *c);
void zunionstoreCommand(redisClient *c);
void zinterstoreCommand(redisClient *c);
void hkeysCommand(redisClient *c);
void hvalsCommand(redisClient *c);
void hgetallCommand(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 punsubscribeCommand(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 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 timeCommand(redisClient *c);
void bitopCommand(redisClient *c);
void bitcountCommand(redisClient *c);
void replconfCommand(redisClient *c);
#if defined(__GNUC__)
void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
void free(void *ptr) __attribute__ ((deprecated));
void *malloc(size_t size) __attribute__ ((deprecated));
void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
/* 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);
void enableWatchdog(int period);
void disableWatchdog(void);
void watchdogScheduleSignal(int period);
void redisLogHexDump(int level, char *descr, void *value, size_t len);
#define redisDebug(fmt, ...) \
printf("DEBUG %s:%d > " fmt "\n", __FILE__, __LINE__, __VA_ARGS__)
#define redisDebugMark() \
printf("-- MARK %s:%d --\n", __FILE__, __LINE__)
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