src/redis.h

   1 #ifndef __REDIS_H
   2 #define __REDIS_H
   3
   4 #include "fmacros.h"
   5 #include "config.h"
   6
   7 #if defined(__sun)
   8 #include "solarisfixes.h"
   9 #endif
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <time.h>
  15 #include <limits.h>
  16 #include <unistd.h>
  17 #include <errno.h>
  18 #include <inttypes.h>
  19 #include <pthread.h>
  20 #include <syslog.h>
  21 #include <netinet/in.h>
  22 #include <lua.h>
  23
  24 #include "ae.h"      /* Event driven programming library */
  25 #include "sds.h"     /* Dynamic safe strings */
  26 #include "dict.h"    /* Hash tables */
  27 #include "adlist.h"  /* Linked lists */
  28 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
  29 #include "anet.h"    /* Networking the easy way */
  30 #include "zipmap.h"  /* Compact string -> string data structure */
  31 #include "ziplist.h" /* Compact list data structure */
  32 #include "intset.h"  /* Compact integer set structure */
  33 #include "version.h" /* Version macro */
  34 #include "util.h"    /* Misc functions useful in many places */
  35
  36 /* Error codes */
  37 #define REDIS_OK                0
  38 #define REDIS_ERR               -1
  39
  40 /* Static server configuration */
  41 #define REDIS_SERVERPORT        6379    /* TCP port */
  42 #define REDIS_MAXIDLETIME       0       /* default client timeout: infinite */
  43 #define REDIS_IOBUF_LEN         (1024*16)
  44 #define REDIS_LOADBUF_LEN       1024
  45 #define REDIS_DEFAULT_DBNUM     16
  46 #define REDIS_CONFIGLINE_MAX    1024
  47 #define REDIS_MAX_SYNC_TIME     60      /* Slave can't take more to sync */
  48 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
  49 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
  50 #define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */
  51 #define REDIS_SHARED_INTEGERS 10000
  52 #define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
  53 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
  54 #define REDIS_AUTO_AOFREWRITE_PERC  100
  55 #define REDIS_AUTO_AOFREWRITE_MIN_SIZE (1024*1024)
  56 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
  57 #define REDIS_SLOWLOG_MAX_LEN 64
  58 #define REDIS_MAX_CLIENTS 10000
  59
  60 #define REDIS_REPL_TIMEOUT 60
  61 #define REDIS_REPL_PING_SLAVE_PERIOD 10
  62 #define REDIS_MBULK_BIG_ARG (1024*32)
  63
  64 /* Hash table parameters */
  65 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
  66
  67 /* Command flags. Please check the command table defined in the redis.c file
  68  * for more information about the meaning of every flag. */
  69 #define REDIS_CMD_WRITE 1                   /* "w" flag */
  70 #define REDIS_CMD_READONLY 2                /* "r" flag */
  71 #define REDIS_CMD_DENYOOM 4                 /* "m" flag */
  72 #define REDIS_CMD_FORCE_REPLICATION 8       /* "f" flag */
  73 #define REDIS_CMD_ADMIN 16                  /* "a" flag */
  74 #define REDIS_CMD_PUBSUB 32                 /* "p" flag */
  75 #define REDIS_CMD_NOSCRIPT  64              /* "s" flag */
  76 #define REDIS_CMD_RANDOM 128                /* "R" flag */
  77
  78 /* Object types */
  79 #define REDIS_STRING 0
  80 #define REDIS_LIST 1
  81 #define REDIS_SET 2
  82 #define REDIS_ZSET 3
  83 #define REDIS_HASH 4
  84 #define REDIS_VMPOINTER 8
  85
  86 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  87  * internally represented in multiple ways. The 'encoding' field of the object
  88  * is set to one of this fields for this object. */
  89 #define REDIS_ENCODING_RAW 0     /* Raw representation */
  90 #define REDIS_ENCODING_INT 1     /* Encoded as integer */
  91 #define REDIS_ENCODING_HT 2      /* Encoded as hash table */
  92 #define REDIS_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
  93 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
  94 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
  95 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
  96 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
  97
  98 /* Defines related to the dump file format. To store 32 bits lengths for short
  99  * keys requires a lot of space, so we check the most significant 2 bits of
 100  * the first byte to interpreter the length:
 101  *
 102  * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
 103  * 01|000000 00000000 =>  01, the len is 14 byes, 6 bits + 8 bits of next byte
 104  * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
 105  * 11|000000 this means: specially encoded object will follow. The six bits
 106  *           number specify the kind of object that follows.
 107  *           See the REDIS_RDB_ENC_* defines.
 108  *
 109  * Lenghts up to 63 are stored using a single byte, most DB keys, and may
 110  * values, will fit inside. */
 111 #define REDIS_RDB_6BITLEN 0
 112 #define REDIS_RDB_14BITLEN 1
 113 #define REDIS_RDB_32BITLEN 2
 114 #define REDIS_RDB_ENCVAL 3
 115 #define REDIS_RDB_LENERR UINT_MAX
 116
 117 /* When a length of a string object stored on disk has the first two bits
 118  * set, the remaining two bits specify a special encoding for the object
 119  * accordingly to the following defines: */
 120 #define REDIS_RDB_ENC_INT8 0        /* 8 bit signed integer */
 121 #define REDIS_RDB_ENC_INT16 1       /* 16 bit signed integer */
 122 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 123 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 124
 125 /* Client flags */
 126 #define REDIS_SLAVE 1       /* This client is a slave server */
 127 #define REDIS_MASTER 2      /* This client is a master server */
 128 #define REDIS_MONITOR 4     /* This client is a slave monitor, see MONITOR */
 129 #define REDIS_MULTI 8       /* This client is in a MULTI context */
 130 #define REDIS_BLOCKED 16    /* The client is waiting in a blocking operation */
 131 #define REDIS_DIRTY_CAS 64  /* Watched keys modified. EXEC will fail. */
 132 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
 133 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
 134                                server.unblocked_clients */
 135 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
 136 #define REDIS_ASKING 1024   /* Client issued the ASKING command */
 137
 138 /* Client request types */
 139 #define REDIS_REQ_INLINE 1
 140 #define REDIS_REQ_MULTIBULK 2
 141
 142 /* Slave replication state - slave side */
 143 #define REDIS_REPL_NONE 0 /* No active replication */
 144 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
 145 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
 146 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
 147 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
 148
 149 /* Synchronous read timeout - slave side */
 150 #define REDIS_REPL_SYNCIO_TIMEOUT 5
 151
 152 /* Slave replication state - from the point of view of master
 153  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 154  * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
 155  * to start the next background saving in order to send updates to it. */
 156 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
 157 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
 158 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
 159 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
 160
 161 /* List related stuff */
 162 #define REDIS_HEAD 0
 163 #define REDIS_TAIL 1
 164
 165 /* Sort operations */
 166 #define REDIS_SORT_GET 0
 167 #define REDIS_SORT_ASC 1
 168 #define REDIS_SORT_DESC 2
 169 #define REDIS_SORTKEY_MAX 1024
 170
 171 /* Log levels */
 172 #define REDIS_DEBUG 0
 173 #define REDIS_VERBOSE 1
 174 #define REDIS_NOTICE 2
 175 #define REDIS_WARNING 3
 176 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
 177
 178 /* Anti-warning macro... */
 179 #define REDIS_NOTUSED(V) ((void) V)
 180
 181 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
 182 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 183
 184 /* Append only defines */
 185 #define APPENDFSYNC_NO 0
 186 #define APPENDFSYNC_ALWAYS 1
 187 #define APPENDFSYNC_EVERYSEC 2
 188
 189 /* Zip structure related defaults */
 190 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 191 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 192 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 193 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 194 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 195 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
 196 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
 197
 198 /* Sets operations codes */
 199 #define REDIS_OP_UNION 0
 200 #define REDIS_OP_DIFF 1
 201 #define REDIS_OP_INTER 2
 202
 203 /* Redis maxmemory strategies */
 204 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
 205 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
 206 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 207 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 208 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 209 #define REDIS_MAXMEMORY_NO_EVICTION 5
 210
 211 /* Scripting */
 212 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
 213
 214 /* Units */
 215 #define UNIT_SECONDS 0
 216 #define UNIT_MILLISECONDS 1
 217
 218 /* SHUTDOWN flags */
 219 #define REDIS_SHUTDOWN_SAVE 1       /* Force SAVE on SHUTDOWN even if no save
 220                                        points are configured. */
 221 #define REDIS_SHUTDOWN_NOSAVE 2     /* Don't SAVE on SHUTDOWN. */
 222
 223 /* We can print the stacktrace, so our assert is defined this way: */
 224 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
 225 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 226 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 227
 228 /*-----------------------------------------------------------------------------
 229  * Data types
 230  *----------------------------------------------------------------------------*/
 231
 232 /* A redis object, that is a type able to hold a string / list / set */
 233
 234 /* The actual Redis Object */
 235 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
 236 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
 237 typedef struct redisObject {
 238     unsigned type:4;
 239     unsigned notused:2;     /* Not used */
 240     unsigned encoding:4;
 241     unsigned lru:22;        /* lru time (relative to server.lruclock) */
 242     int refcount;
 243     void *ptr;
 244 } robj;
 245
 246 /* Macro used to initalize a Redis object allocated on the stack.
 247  * Note that this macro is taken near the structure definition to make sure
 248  * we'll update it when the structure is changed, to avoid bugs like
 249  * bug #85 introduced exactly in this way. */
 250 #define initStaticStringObject(_var,_ptr) do { \
 251     _var.refcount = 1; \
 252     _var.type = REDIS_STRING; \
 253     _var.encoding = REDIS_ENCODING_RAW; \
 254     _var.ptr = _ptr; \
 255 } while(0);
 256
 257 typedef struct redisDb {
 258     dict *dict;                 /* The keyspace for this DB */
 259     dict *expires;              /* Timeout of keys with a timeout set */
 260     dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */
 261     dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */
 262     int id;
 263 } redisDb;
 264
 265 /* Client MULTI/EXEC state */
 266 typedef struct multiCmd {
 267     robj **argv;
 268     int argc;
 269     struct redisCommand *cmd;
 270 } multiCmd;
 271
 272 typedef struct multiState {
 273     multiCmd *commands;     /* Array of MULTI commands */
 274     int count;              /* Total number of MULTI commands */
 275 } multiState;
 276
 277 typedef struct blockingState {
 278     robj **keys;            /* The key we are waiting to terminate a blocking
 279                              * operation such as BLPOP. Otherwise NULL. */
 280     int count;              /* Number of blocking keys */
 281     time_t timeout;         /* Blocking operation timeout. If UNIX current time
 282                              * is >= timeout then the operation timed out. */
 283     robj *target;           /* The key that should receive the element,
 284                              * for BRPOPLPUSH. */
 285 } blockingState;
 286
 287 /* With multiplexing we need to take per-clinet state.
 288  * Clients are taken in a liked list. */
 289 typedef struct redisClient {
 290     int fd;
 291     redisDb *db;
 292     int dictid;
 293     sds querybuf;
 294     int argc;
 295     robj **argv;
 296     struct redisCommand *cmd;
 297     int reqtype;
 298     int multibulklen;       /* number of multi bulk arguments left to read */
 299     long bulklen;           /* length of bulk argument in multi bulk request */
 300     list *reply;
 301     int sentlen;
 302     time_t lastinteraction; /* time of the last interaction, used for timeout */
 303     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
 304     int slaveseldb;         /* slave selected db, if this client is a slave */
 305     int authenticated;      /* when requirepass is non-NULL */
 306     int replstate;          /* replication state if this is a slave */
 307     int repldbfd;           /* replication DB file descriptor */
 308     long repldboff;         /* replication DB file offset */
 309     off_t repldbsize;       /* replication DB file size */
 310     multiState mstate;      /* MULTI/EXEC state */
 311     blockingState bpop;   /* blocking state */
 312     list *io_keys;          /* Keys this client is waiting to be loaded from the
 313                              * swap file in order to continue. */
 314     list *watched_keys;     /* Keys WATCHED for MULTI/EXEC CAS */
 315     dict *pubsub_channels;  /* channels a client is interested in (SUBSCRIBE) */
 316     list *pubsub_patterns;  /* patterns a client is interested in (SUBSCRIBE) */
 317
 318     /* Response buffer */
 319     int bufpos;
 320     char buf[REDIS_REPLY_CHUNK_BYTES];
 321 } redisClient;
 322
 323 struct saveparam {
 324     time_t seconds;
 325     int changes;
 326 };
 327
 328 struct sharedObjectsStruct {
 329     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
 330     *colon, *nullbulk, *nullmultibulk, *queued,
 331     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
 332     *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,
 333     *select0, *select1, *select2, *select3, *select4,
 334     *select5, *select6, *select7, *select8, *select9,
 335     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
 336     *mbulk4, *psubscribebulk, *punsubscribebulk,
 337     *integers[REDIS_SHARED_INTEGERS];
 338 };
 339
 340 /* ZSETs use a specialized version of Skiplists */
 341 typedef struct zskiplistNode {
 342     robj *obj;
 343     double score;
 344     struct zskiplistNode *backward;
 345     struct zskiplistLevel {
 346         struct zskiplistNode *forward;
 347         unsigned int span;
 348     } level[];
 349 } zskiplistNode;
 350
 351 typedef struct zskiplist {
 352     struct zskiplistNode *header, *tail;
 353     unsigned long length;
 354     int level;
 355 } zskiplist;
 356
 357 typedef struct zset {
 358     dict *dict;
 359     zskiplist *zsl;
 360 } zset;
 361
 362 /*-----------------------------------------------------------------------------
 363  * Redis cluster data structures
 364  *----------------------------------------------------------------------------*/
 365
 366 #define REDIS_CLUSTER_SLOTS 4096
 367 #define REDIS_CLUSTER_OK 0          /* Everything looks ok */
 368 #define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
 369 #define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */
 370 #define REDIS_CLUSTER_NAMELEN 40    /* sha1 hex length */
 371 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
 372
 373 struct clusterNode;
 374
 375 /* clusterLink encapsulates everything needed to talk with a remote node. */
 376 typedef struct clusterLink {
 377     int fd;                     /* TCP socket file descriptor */
 378     sds sndbuf;                 /* Packet send buffer */
 379     sds rcvbuf;                 /* Packet reception buffer */
 380     struct clusterNode *node;   /* Node related to this link if any, or NULL */
 381 } clusterLink;
 382
 383 /* Node flags */
 384 #define REDIS_NODE_MASTER 1     /* The node is a master */
 385 #define REDIS_NODE_SLAVE 2      /* The node is a slave */
 386 #define REDIS_NODE_PFAIL 4      /* Failure? Need acknowledge */
 387 #define REDIS_NODE_FAIL 8       /* The node is believed to be malfunctioning */
 388 #define REDIS_NODE_MYSELF 16    /* This node is myself */
 389 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
 390 #define REDIS_NODE_NOADDR   64  /* We don't know the address of this node */
 391 #define REDIS_NODE_MEET 128     /* Send a MEET message to this node */
 392 #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"
 393
 394 struct clusterNode {
 395     char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
 396     int flags;      /* REDIS_NODE_... */
 397     unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
 398     int numslaves;  /* Number of slave nodes, if this is a master */
 399     struct clusterNode **slaves; /* pointers to slave nodes */
 400     struct clusterNode *slaveof; /* pointer to the master node */
 401     time_t ping_sent;       /* Unix time we sent latest ping */
 402     time_t pong_received;   /* Unix time we received the pong */
 403     char *configdigest;         /* Configuration digest of this node */
 404     time_t configdigest_ts;     /* Configuration digest timestamp */
 405     char ip[16];                /* Latest known IP address of this node */
 406     int port;                   /* Latest known port of this node */
 407     clusterLink *link;          /* TCP/IP link with this node */
 408 };
 409 typedef struct clusterNode clusterNode;
 410
 411 typedef struct {
 412     char *configfile;
 413     clusterNode *myself;  /* This node */
 414     int state;            /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
 415     int node_timeout;
 416     dict *nodes;          /* Hash table of name -> clusterNode structures */
 417     clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
 418     clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
 419     clusterNode *slots[REDIS_CLUSTER_SLOTS];
 420     zskiplist *slots_to_keys;
 421 } clusterState;
 422
 423 /* Redis cluster messages header */
 424
 425 /* Note that the PING, PONG and MEET messages are actually the same exact
 426  * kind of packet. PONG is the reply to ping, in the extact format as a PING,
 427  * while MEET is a special PING that forces the receiver to add the sender
 428  * as a node (if it is not already in the list). */
 429 #define CLUSTERMSG_TYPE_PING 0          /* Ping */
 430 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 431 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 432 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */
 433 #define CLUSTERMSG_TYPE_PUBLISH 4       /* Pub/Sub Publish propatagion */
 434
 435 /* Initially we don't know our "name", but we'll find it once we connect
 436  * to the first node, using the getsockname() function. Then we'll use this
 437  * address for all the next messages. */
 438 typedef struct {
 439     char nodename[REDIS_CLUSTER_NAMELEN];
 440     uint32_t ping_sent;
 441     uint32_t pong_received;
 442     char ip[16];    /* IP address last time it was seen */
 443     uint16_t port;  /* port last time it was seen */
 444     uint16_t flags;
 445     uint32_t notused; /* for 64 bit alignment */
 446 } clusterMsgDataGossip;
 447
 448 typedef struct {
 449     char nodename[REDIS_CLUSTER_NAMELEN];
 450 } clusterMsgDataFail;
 451
 452 typedef struct {
 453     uint32_t channel_len;
 454     uint32_t message_len;
 455     unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
 456 } clusterMsgDataPublish;
 457
 458 union clusterMsgData {
 459     /* PING, MEET and PONG */
 460     struct {
 461         /* Array of N clusterMsgDataGossip structures */
 462         clusterMsgDataGossip gossip[1];
 463     } ping;
 464
 465     /* FAIL */
 466     struct {
 467         clusterMsgDataFail about;
 468     } fail;
 469
 470     /* PUBLISH */
 471     struct {
 472         clusterMsgDataPublish msg;
 473     } publish;
 474 };
 475
 476 typedef struct {
 477     uint32_t totlen;    /* Total length of this message */
 478     uint16_t type;      /* Message type */
 479     uint16_t count;     /* Only used for some kind of messages. */
 480     char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
 481     unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
 482     char slaveof[REDIS_CLUSTER_NAMELEN];
 483     char configdigest[32];
 484     uint16_t port;      /* Sender TCP base port */
 485     unsigned char state; /* Cluster state from the POV of the sender */
 486     unsigned char notused[5]; /* Reserved for future use. For alignment. */
 487     union clusterMsgData data;
 488 } clusterMsg;
 489
 490 /*-----------------------------------------------------------------------------
 491  * Global server state
 492  *----------------------------------------------------------------------------*/
 493
 494 struct redisServer {
 495     /* General */
 496     redisDb *db;
 497     dict *commands;             /* Command table hahs table */
 498     aeEventLoop *el;
 499     /* Networking */
 500     int port;
 501     char *bindaddr;
 502     char *unixsocket;
 503     mode_t unixsocketperm;
 504     int ipfd;
 505     int sofd;
 506     int cfd;
 507     list *clients;
 508     list *slaves, *monitors;
 509     char neterr[ANET_ERR_LEN];
 510     /* RDB / AOF loading information */
 511     int loading;
 512     off_t loading_total_bytes;
 513     off_t loading_loaded_bytes;
 514     time_t loading_start_time;
 515     /* Fast pointers to often looked up command */
 516     struct redisCommand *delCommand, *multiCommand;
 517     int cronloops;              /* number of times the cron function run */
 518     time_t lastsave;                /* Unix time of last save succeeede */
 519     /* Fields used only for stats */
 520     time_t stat_starttime;          /* server start time */
 521     long long stat_numcommands;     /* number of processed commands */
 522     long long stat_numconnections;  /* number of connections received */
 523     long long stat_expiredkeys;     /* number of expired keys */
 524     long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
 525     long long stat_keyspace_hits;   /* number of successful lookups of keys */
 526     long long stat_keyspace_misses; /* number of failed lookups of keys */
 527     size_t stat_peak_memory;        /* max used memory record */
 528     long long stat_fork_time;       /* time needed to perform latets fork() */
 529     list *slowlog;
 530     long long slowlog_entry_id;
 531     long long slowlog_log_slower_than;
 532     unsigned long slowlog_max_len;
 533     /* Configuration */
 534     int verbosity;
 535     int maxidletime;
 536     int dbnum;
 537     int daemonize;
 538     int appendonly;
 539     int appendfsync;
 540     int no_appendfsync_on_rewrite;
 541     int auto_aofrewrite_perc;       /* Rewrite AOF if % growth is > M and... */
 542     off_t auto_aofrewrite_min_size; /* the AOF file is at least N bytes. */
 543     off_t auto_aofrewrite_base_size;/* AOF size on latest startup or rewrite. */
 544     off_t appendonly_current_size;  /* AOF current size. */
 545     int aofrewrite_scheduled;       /* Rewrite once BGSAVE terminates. */
 546     int shutdown_asap;              /* SHUTDOWN needed */
 547     int activerehashing;
 548     char *requirepass;
 549     /* Persistence */
 550     long long dirty;            /* changes to DB from the last save */
 551     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
 552     time_t lastfsync;
 553     int appendfd;
 554     int appendseldb;
 555     time_t aof_flush_postponed_start;
 556     char *pidfile;
 557     pid_t bgsavechildpid;
 558     pid_t bgrewritechildpid;
 559     sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
 560     sds aofbuf;       /* AOF buffer, written before entering the event loop */
 561     struct saveparam *saveparams;
 562     int saveparamslen;
 563     char *dbfilename;
 564     int rdbcompression;
 565     char *appendfilename;
 566     /* Logging */
 567     char *logfile;
 568     int syslog_enabled;
 569     char *syslog_ident;
 570     int syslog_facility;
 571     /* Replication related */
 572     int isslave;
 573     /* Slave specific fields */
 574     char *masterauth;
 575     char *masterhost;
 576     int masterport;
 577     int repl_ping_slave_period;
 578     int repl_timeout;
 579     redisClient *master;    /* client that is master for this slave */
 580     int repl_syncio_timeout; /* timeout for synchronous I/O calls */
 581     int replstate;          /* replication status if the instance is a slave */
 582     off_t repl_transfer_left;  /* bytes left reading .rdb  */
 583     int repl_transfer_s;    /* slave -> master SYNC socket */
 584     int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
 585     char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
 586     time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
 587     int repl_serve_stale_data; /* Serve stale data when link is down? */
 588     time_t repl_down_since; /* unix time at which link with master went down */
 589     /* Limits */
 590     unsigned int maxclients;
 591     unsigned long long maxmemory;
 592     int maxmemory_policy;
 593     int maxmemory_samples;
 594     /* Blocked clients */
 595     unsigned int bpop_blocked_clients;
 596     list *unblocked_clients; /* list of clients to unblock before next loop */
 597     /* Sort parameters - qsort_r() is only available under BSD so we
 598      * have to take this state global, in order to pass it to sortCompare() */
 599     int sort_desc;
 600     int sort_alpha;
 601     int sort_bypattern;
 602     /* Zip structure config */
 603     size_t hash_max_zipmap_entries;
 604     size_t hash_max_zipmap_value;
 605     size_t list_max_ziplist_entries;
 606     size_t list_max_ziplist_value;
 607     size_t set_max_intset_entries;
 608     size_t zset_max_ziplist_entries;
 609     size_t zset_max_ziplist_value;
 610     time_t unixtime;    /* Unix time sampled every second. */
 611     /* Pubsub */
 612     dict *pubsub_channels; /* Map channels to list of subscribed clients */
 613     list *pubsub_patterns; /* A list of pubsub_patterns */
 614     /* Misc */
 615     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
 616     unsigned lruclock_padding:10;
 617     /* Cluster */
 618     int cluster_enabled;
 619     clusterState cluster;
 620     /* Scripting */
 621     lua_State *lua; /* The Lua interpreter. We use just one for all clients */
 622     redisClient *lua_client; /* The "fake client" to query Redis from Lua */
 623     redisClient *lua_caller; /* The client running EVAL right now, or NULL */
 624     dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
 625     long long lua_time_limit;
 626     long long lua_time_start;
 627     int lua_write_dirty;  /* True if a write command was called during the
 628                              execution of the current script. */
 629     int lua_random_dirty; /* True if a random command was called during the
 630                              execution of the current script. */
 631     int lua_timedout;     /* True if we reached the time limit for script
 632                              execution. */
 633     int lua_kill;         /* Kill the script if true. */
 634 };
 635
 636 typedef struct pubsubPattern {
 637     redisClient *client;
 638     robj *pattern;
 639 } pubsubPattern;
 640
 641 typedef void redisCommandProc(redisClient *c);
 642 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 643 struct redisCommand {
 644     char *name;
 645     redisCommandProc *proc;
 646     int arity;
 647     char *sflags; /* Flags as string represenation, one char per flag. */
 648     int flags;    /* The actual flags, obtained from the 'sflags' field. */
 649     /* Use a function to determine keys arguments in a command line.
 650      * Used for Redis Cluster redirect. */
 651     redisGetKeysProc *getkeys_proc;
 652     /* What keys should be loaded in background when calling this command? */
 653     int firstkey; /* The first argument that's a key (0 = no keys) */
 654     int lastkey;  /* THe last argument that's a key */
 655     int keystep;  /* The step between first and last key */
 656     long long microseconds, calls;
 657 };
 658
 659 struct redisFunctionSym {
 660     char *name;
 661     unsigned long pointer;
 662 };
 663
 664 typedef struct _redisSortObject {
 665     robj *obj;
 666     union {
 667         double score;
 668         robj *cmpobj;
 669     } u;
 670 } redisSortObject;
 671
 672 typedef struct _redisSortOperation {
 673     int type;
 674     robj *pattern;
 675 } redisSortOperation;
 676
 677 /* Structure to hold list iteration abstraction. */
 678 typedef struct {
 679     robj *subject;
 680     unsigned char encoding;
 681     unsigned char direction; /* Iteration direction */
 682     unsigned char *zi;
 683     listNode *ln;
 684 } listTypeIterator;
 685
 686 /* Structure for an entry while iterating over a list. */
 687 typedef struct {
 688     listTypeIterator *li;
 689     unsigned char *zi;  /* Entry in ziplist */
 690     listNode *ln;       /* Entry in linked list */
 691 } listTypeEntry;
 692
 693 /* Structure to hold set iteration abstraction. */
 694 typedef struct {
 695     robj *subject;
 696     int encoding;
 697     int ii; /* intset iterator */
 698     dictIterator *di;
 699 } setTypeIterator;
 700
 701 /* Structure to hold hash iteration abstration. Note that iteration over
 702  * hashes involves both fields and values. Because it is possible that
 703  * not both are required, store pointers in the iterator to avoid
 704  * unnecessary memory allocation for fields/values. */
 705 typedef struct {
 706     int encoding;
 707     unsigned char *zi;
 708     unsigned char *zk, *zv;
 709     unsigned int zklen, zvlen;
 710
 711     dictIterator *di;
 712     dictEntry *de;
 713 } hashTypeIterator;
 714
 715 #define REDIS_HASH_KEY 1
 716 #define REDIS_HASH_VALUE 2
 717
 718 /*-----------------------------------------------------------------------------
 719  * Extern declarations
 720  *----------------------------------------------------------------------------*/
 721
 722 extern struct redisServer server;
 723 extern struct sharedObjectsStruct shared;
 724 extern dictType setDictType;
 725 extern dictType zsetDictType;
 726 extern dictType clusterNodesDictType;
 727 extern dictType dbDictType;
 728 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 729 dictType hashDictType;
 730
 731 /*-----------------------------------------------------------------------------
 732  * Functions prototypes
 733  *----------------------------------------------------------------------------*/
 734
 735 /* Utils */
 736 long long ustime(void);
 737 long long mstime(void);
 738
 739 /* networking.c -- Networking and Client related operations */
 740 redisClient *createClient(int fd);
 741 void closeTimedoutClients(void);
 742 void freeClient(redisClient *c);
 743 void resetClient(redisClient *c);
 744 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
 745 void addReply(redisClient *c, robj *obj);
 746 void *addDeferredMultiBulkLength(redisClient *c);
 747 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
 748 void addReplySds(redisClient *c, sds s);
 749 void processInputBuffer(redisClient *c);
 750 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 751 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 752 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 753 void addReplyBulk(redisClient *c, robj *obj);
 754 void addReplyBulkCString(redisClient *c, char *s);
 755 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
 756 void addReplyBulkLongLong(redisClient *c, long long ll);
 757 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 758 void addReply(redisClient *c, robj *obj);
 759 void addReplySds(redisClient *c, sds s);
 760 void addReplyError(redisClient *c, char *err);
 761 void addReplyStatus(redisClient *c, char *status);
 762 void addReplyDouble(redisClient *c, double d);
 763 void addReplyLongLong(redisClient *c, long long ll);
 764 void addReplyMultiBulkLen(redisClient *c, long length);
 765 void *dupClientReplyValue(void *o);
 766 void getClientsMaxBuffers(unsigned long *longest_output_list,
 767                           unsigned long *biggest_input_buffer);
 768 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 769 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
 770
 771 #ifdef __GNUC__
 772 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 773     __attribute__((format(printf, 2, 3)));
 774 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
 775     __attribute__((format(printf, 2, 3)));
 776 #else
 777 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
 778 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
 779 #endif
 780
 781 /* List data type */
 782 void listTypeTryConversion(robj *subject, robj *value);
 783 void listTypePush(robj *subject, robj *value, int where);
 784 robj *listTypePop(robj *subject, int where);
 785 unsigned long listTypeLength(robj *subject);
 786 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
 787 void listTypeReleaseIterator(listTypeIterator *li);
 788 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
 789 robj *listTypeGet(listTypeEntry *entry);
 790 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
 791 int listTypeEqual(listTypeEntry *entry, robj *o);
 792 void listTypeDelete(listTypeEntry *entry);
 793 void listTypeConvert(robj *subject, int enc);
 794 void unblockClientWaitingData(redisClient *c);
 795 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
 796 void popGenericCommand(redisClient *c, int where);
 797
 798 /* MULTI/EXEC/WATCH... */
 799 void unwatchAllKeys(redisClient *c);
 800 void initClientMultiState(redisClient *c);
 801 void freeClientMultiState(redisClient *c);
 802 void queueMultiCommand(redisClient *c);
 803 void touchWatchedKey(redisDb *db, robj *key);
 804 void touchWatchedKeysOnFlush(int dbid);
 805
 806 /* Redis object implementation */
 807 void decrRefCount(void *o);
 808 void incrRefCount(robj *o);
 809 robj *resetRefCount(robj *obj);
 810 void freeStringObject(robj *o);
 811 void freeListObject(robj *o);
 812 void freeSetObject(robj *o);
 813 void freeZsetObject(robj *o);
 814 void freeHashObject(robj *o);
 815 robj *createObject(int type, void *ptr);
 816 robj *createStringObject(char *ptr, size_t len);
 817 robj *dupStringObject(robj *o);
 818 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
 819 robj *tryObjectEncoding(robj *o);
 820 robj *getDecodedObject(robj *o);
 821 size_t stringObjectLen(robj *o);
 822 robj *createStringObjectFromLongLong(long long value);
 823 robj *createStringObjectFromLongDouble(long double value);
 824 robj *createListObject(void);
 825 robj *createZiplistObject(void);
 826 robj *createSetObject(void);
 827 robj *createIntsetObject(void);
 828 robj *createHashObject(void);
 829 robj *createZsetObject(void);
 830 robj *createZsetZiplistObject(void);
 831 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
 832 int checkType(redisClient *c, robj *o, int type);
 833 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 834 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 835 int getLongLongFromObject(robj *o, long long *target);
 836 int getLongDoubleFromObject(robj *o, long double *target);
 837 int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
 838 char *strEncoding(int encoding);
 839 int compareStringObjects(robj *a, robj *b);
 840 int equalStringObjects(robj *a, robj *b);
 841 unsigned long estimateObjectIdleTime(robj *o);
 842
 843 /* Synchronous I/O with timeout */
 844 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
 845 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
 846 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
 847
 848 /* Replication */
 849 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 850 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 851 void updateSlavesWaitingBgsave(int bgsaveerr);
 852 void replicationCron(void);
 853
 854 /* Generic persistence functions */
 855 void startLoading(FILE *fp);
 856 void loadingProgress(off_t pos);
 857 void stopLoading(void);
 858
 859 /* RDB persistence */
 860 #include "rdb.h"
 861
 862 /* AOF persistence */
 863 void flushAppendOnlyFile(int force);
 864 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
 865 void aofRemoveTempFile(pid_t childpid);
 866 int rewriteAppendOnlyFileBackground(void);
 867 int loadAppendOnlyFile(char *filename);
 868 void stopAppendOnly(void);
 869 int startAppendOnly(void);
 870 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
 871
 872 /* Sorted sets data type */
 873
 874 /* Struct to hold a inclusive/exclusive range spec. */
 875 typedef struct {
 876     double min, max;
 877     int minex, maxex; /* are min or max exclusive? */
 878 } zrangespec;
 879
 880 zskiplist *zslCreate(void);
 881 void zslFree(zskiplist *zsl);
 882 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 883 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
 884 int zslDelete(zskiplist *zsl, double score, robj *obj);
 885 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
 886 double zzlGetScore(unsigned char *sptr);
 887 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 888 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 889 unsigned int zsetLength(robj *zobj);
 890 void zsetConvert(robj *zobj, int encoding);
 891
 892 /* Core functions */
 893 void freeMemoryIfNeeded(void);
 894 int processCommand(redisClient *c);
 895 void setupSignalHandlers(void);
 896 struct redisCommand *lookupCommand(sds name);
 897 struct redisCommand *lookupCommandByCString(char *s);
 898 void call(redisClient *c);
 899 int prepareForShutdown();
 900 void redisLog(int level, const char *fmt, ...);
 901 void redisLogRaw(int level, const char *msg);
 902 void usage();
 903 void updateDictResizePolicy(void);
 904 int htNeedsResize(dict *dict);
 905 void oom(const char *msg);
 906 void populateCommandTable(void);
 907 void resetCommandTableStats(void);
 908
 909 /* Set data type */
 910 robj *setTypeCreate(robj *value);
 911 int setTypeAdd(robj *subject, robj *value);
 912 int setTypeRemove(robj *subject, robj *value);
 913 int setTypeIsMember(robj *subject, robj *value);
 914 setTypeIterator *setTypeInitIterator(robj *subject);
 915 void setTypeReleaseIterator(setTypeIterator *si);
 916 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
 917 robj *setTypeNextObject(setTypeIterator *si);
 918 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
 919 unsigned long setTypeSize(robj *subject);
 920 void setTypeConvert(robj *subject, int enc);
 921
 922 /* Hash data type */
 923 void convertToRealHash(robj *o);
 924 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 925 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 926 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
 927 robj *hashTypeGetObject(robj *o, robj *key);
 928 int hashTypeExists(robj *o, robj *key);
 929 int hashTypeSet(robj *o, robj *key, robj *value);
 930 int hashTypeDelete(robj *o, robj *key);
 931 unsigned long hashTypeLength(robj *o);
 932 hashTypeIterator *hashTypeInitIterator(robj *subject);
 933 void hashTypeReleaseIterator(hashTypeIterator *hi);
 934 int hashTypeNext(hashTypeIterator *hi);
 935 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
 936 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 937 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 938
 939 /* Pub / Sub */
 940 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 941 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 942 void freePubsubPattern(void *p);
 943 int listMatchPubsubPattern(void *a, void *b);
 944 int pubsubPublishMessage(robj *channel, robj *message);
 945
 946 /* Configuration */
 947 void loadServerConfig(char *filename);
 948 void appendServerSaveParams(time_t seconds, int changes);
 949 void resetServerSaveParams();
 950
 951 /* db.c -- Keyspace access API */
 952 int removeExpire(redisDb *db, robj *key);
 953 void propagateExpire(redisDb *db, robj *key);
 954 int expireIfNeeded(redisDb *db, robj *key);
 955 long long getExpire(redisDb *db, robj *key);
 956 void setExpire(redisDb *db, robj *key, long long when);
 957 robj *lookupKey(redisDb *db, robj *key);
 958 robj *lookupKeyRead(redisDb *db, robj *key);
 959 robj *lookupKeyWrite(redisDb *db, robj *key);
 960 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
 961 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
 962 void dbAdd(redisDb *db, robj *key, robj *val);
 963 void dbOverwrite(redisDb *db, robj *key, robj *val);
 964 void setKey(redisDb *db, robj *key, robj *val);
 965 int dbExists(redisDb *db, robj *key);
 966 robj *dbRandomKey(redisDb *db);
 967 int dbDelete(redisDb *db, robj *key);
 968 long long emptyDb();
 969 int selectDb(redisClient *c, int id);
 970 void signalModifiedKey(redisDb *db, robj *key);
 971 void signalFlushedDb(int dbid);
 972 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
 973
 974 /* API to get key arguments from commands */
 975 #define REDIS_GETKEYS_ALL 0
 976 #define REDIS_GETKEYS_PRELOAD 1
 977 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 978 void getKeysFreeResult(int *result);
 979 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 980 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 981 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 982
 983 /* Cluster */
 984 void clusterInit(void);
 985 unsigned short crc16(const char *buf, int len);
 986 unsigned int keyHashSlot(char *key, int keylen);
 987 clusterNode *createClusterNode(char *nodename, int flags);
 988 int clusterAddNode(clusterNode *node);
 989 void clusterCron(void);
 990 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
 991 void clusterPropagatePublish(robj *channel, robj *message);
 992
 993 /* Scripting */
 994 void scriptingInit(void);
 995
 996 /* Git SHA1 */
 997 char *redisGitSHA1(void);
 998 char *redisGitDirty(void);
 999
1000 /* Commands prototypes */
1001 void authCommand(redisClient *c);
1002 void pingCommand(redisClient *c);
1003 void echoCommand(redisClient *c);
1004 void setCommand(redisClient *c);
1005 void setnxCommand(redisClient *c);
1006 void setexCommand(redisClient *c);
1007 void psetexCommand(redisClient *c);
1008 void getCommand(redisClient *c);
1009 void delCommand(redisClient *c);
1010 void existsCommand(redisClient *c);
1011 void setbitCommand(redisClient *c);
1012 void getbitCommand(redisClient *c);
1013 void setrangeCommand(redisClient *c);
1014 void getrangeCommand(redisClient *c);
1015 void incrCommand(redisClient *c);
1016 void decrCommand(redisClient *c);
1017 void incrbyCommand(redisClient *c);
1018 void decrbyCommand(redisClient *c);
1019 void incrbyfloatCommand(redisClient *c);
1020 void selectCommand(redisClient *c);
1021 void randomkeyCommand(redisClient *c);
1022 void keysCommand(redisClient *c);
1023 void dbsizeCommand(redisClient *c);
1024 void lastsaveCommand(redisClient *c);
1025 void saveCommand(redisClient *c);
1026 void bgsaveCommand(redisClient *c);
1027 void bgrewriteaofCommand(redisClient *c);
1028 void shutdownCommand(redisClient *c);
1029 void moveCommand(redisClient *c);
1030 void renameCommand(redisClient *c);
1031 void renamenxCommand(redisClient *c);
1032 void lpushCommand(redisClient *c);
1033 void rpushCommand(redisClient *c);
1034 void lpushxCommand(redisClient *c);
1035 void rpushxCommand(redisClient *c);
1036 void linsertCommand(redisClient *c);
1037 void lpopCommand(redisClient *c);
1038 void rpopCommand(redisClient *c);
1039 void llenCommand(redisClient *c);
1040 void lindexCommand(redisClient *c);
1041 void lrangeCommand(redisClient *c);
1042 void ltrimCommand(redisClient *c);
1043 void typeCommand(redisClient *c);
1044 void lsetCommand(redisClient *c);
1045 void saddCommand(redisClient *c);
1046 void sremCommand(redisClient *c);
1047 void smoveCommand(redisClient *c);
1048 void sismemberCommand(redisClient *c);
1049 void scardCommand(redisClient *c);
1050 void spopCommand(redisClient *c);
1051 void srandmemberCommand(redisClient *c);
1052 void sinterCommand(redisClient *c);
1053 void sinterstoreCommand(redisClient *c);
1054 void sunionCommand(redisClient *c);
1055 void sunionstoreCommand(redisClient *c);
1056 void sdiffCommand(redisClient *c);
1057 void sdiffstoreCommand(redisClient *c);
1058 void syncCommand(redisClient *c);
1059 void flushdbCommand(redisClient *c);
1060 void flushallCommand(redisClient *c);
1061 void sortCommand(redisClient *c);
1062 void lremCommand(redisClient *c);
1063 void rpoplpushCommand(redisClient *c);
1064 void infoCommand(redisClient *c);
1065 void mgetCommand(redisClient *c);
1066 void monitorCommand(redisClient *c);
1067 void expireCommand(redisClient *c);
1068 void expireatCommand(redisClient *c);
1069 void pexpireCommand(redisClient *c);
1070 void pexpireatCommand(redisClient *c);
1071 void getsetCommand(redisClient *c);
1072 void ttlCommand(redisClient *c);
1073 void pttlCommand(redisClient *c);
1074 void persistCommand(redisClient *c);
1075 void slaveofCommand(redisClient *c);
1076 void debugCommand(redisClient *c);
1077 void msetCommand(redisClient *c);
1078 void msetnxCommand(redisClient *c);
1079 void zaddCommand(redisClient *c);
1080 void zincrbyCommand(redisClient *c);
1081 void zrangeCommand(redisClient *c);
1082 void zrangebyscoreCommand(redisClient *c);
1083 void zrevrangebyscoreCommand(redisClient *c);
1084 void zcountCommand(redisClient *c);
1085 void zrevrangeCommand(redisClient *c);
1086 void zcardCommand(redisClient *c);
1087 void zremCommand(redisClient *c);
1088 void zscoreCommand(redisClient *c);
1089 void zremrangebyscoreCommand(redisClient *c);
1090 void multiCommand(redisClient *c);
1091 void execCommand(redisClient *c);
1092 void discardCommand(redisClient *c);
1093 void blpopCommand(redisClient *c);
1094 void brpopCommand(redisClient *c);
1095 void brpoplpushCommand(redisClient *c);
1096 void appendCommand(redisClient *c);
1097 void strlenCommand(redisClient *c);
1098 void zrankCommand(redisClient *c);
1099 void zrevrankCommand(redisClient *c);
1100 void hsetCommand(redisClient *c);
1101 void hsetnxCommand(redisClient *c);
1102 void hgetCommand(redisClient *c);
1103 void hmsetCommand(redisClient *c);
1104 void hmgetCommand(redisClient *c);
1105 void hdelCommand(redisClient *c);
1106 void hlenCommand(redisClient *c);
1107 void zremrangebyrankCommand(redisClient *c);
1108 void zunionstoreCommand(redisClient *c);
1109 void zinterstoreCommand(redisClient *c);
1110 void hkeysCommand(redisClient *c);
1111 void hvalsCommand(redisClient *c);
1112 void hgetallCommand(redisClient *c);
1113 void hexistsCommand(redisClient *c);
1114 void configCommand(redisClient *c);
1115 void hincrbyCommand(redisClient *c);
1116 void hincrbyfloatCommand(redisClient *c);
1117 void subscribeCommand(redisClient *c);
1118 void unsubscribeCommand(redisClient *c);
1119 void psubscribeCommand(redisClient *c);
1120 void punsubscribeCommand(redisClient *c);
1121 void publishCommand(redisClient *c);
1122 void watchCommand(redisClient *c);
1123 void unwatchCommand(redisClient *c);
1124 void clusterCommand(redisClient *c);
1125 void restoreCommand(redisClient *c);
1126 void migrateCommand(redisClient *c);
1127 void askingCommand(redisClient *c);
1128 void dumpCommand(redisClient *c);
1129 void objectCommand(redisClient *c);
1130 void clientCommand(redisClient *c);
1131 void evalCommand(redisClient *c);
1132 void evalShaCommand(redisClient *c);
1133 void scriptCommand(redisClient *c);
1134
1135 #if defined(__GNUC__)
1136 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1137 void free(void *ptr) __attribute__ ((deprecated));
1138 void *malloc(size_t size) __attribute__ ((deprecated));
1139 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1140 #endif
1141
1142 /* Debugging stuff */
1143 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1144 void _redisAssert(char *estr, char *file, int line);
1145 void _redisPanic(char *msg, char *file, int line);
1146
1147 #endif