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       (60*5)  /* default client timeout */
  43 #define REDIS_IOBUF_LEN         1024
  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 (5*1500) /* 5 TCP packets with default MTU */
  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
  63 /* Hash table parameters */
  64 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
  65
  66 /* Command flags. Please check the command table defined in the redis.c file
  67  * for more information about the meaning of every flag. */
  68 #define REDIS_CMD_WRITE 1                   /* "w" flag */
  69 #define REDIS_CMD_READONLY 2                /* "r" flag */
  70 #define REDIS_CMD_DENYOOM 4                 /* "m" flag */
  71 #define REDIS_CMD_FORCE_REPLICATION 8       /* "f" flag */
  72 #define REDIS_CMD_ADMIN 16                  /* "a" flag */
  73 #define REDIS_CMD_PUBSUB 32                 /* "p" flag */
  74 #define REDIS_CMD_NOSCRIPT  64              /* "s" flag */
  75 #define REDIS_CMD_RANDOM 128                /* "R" flag */
  76
  77 /* Object types */
  78 #define REDIS_STRING 0
  79 #define REDIS_LIST 1
  80 #define REDIS_SET 2
  81 #define REDIS_ZSET 3
  82 #define REDIS_HASH 4
  83 #define REDIS_VMPOINTER 8
  84
  85 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  86  * internally represented in multiple ways. The 'encoding' field of the object
  87  * is set to one of this fields for this object. */
  88 #define REDIS_ENCODING_RAW 0     /* Raw representation */
  89 #define REDIS_ENCODING_INT 1     /* Encoded as integer */
  90 #define REDIS_ENCODING_HT 2      /* Encoded as hash table */
  91 #define REDIS_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
  92 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
  93 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
  94 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
  95 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
  96
  97 /* Object types only used for dumping to disk */
  98 #define REDIS_EXPIRETIME 253
  99 #define REDIS_SELECTDB 254
 100 #define REDIS_EOF 255
 101
 102 /* Defines related to the dump file format. To store 32 bits lengths for short
 103  * keys requires a lot of space, so we check the most significant 2 bits of
 104  * the first byte to interpreter the length:
 105  *
 106  * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
 107  * 01|000000 00000000 =>  01, the len is 14 byes, 6 bits + 8 bits of next byte
 108  * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
 109  * 11|000000 this means: specially encoded object will follow. The six bits
 110  *           number specify the kind of object that follows.
 111  *           See the REDIS_RDB_ENC_* defines.
 112  *
 113  * Lenghts up to 63 are stored using a single byte, most DB keys, and may
 114  * values, will fit inside. */
 115 #define REDIS_RDB_6BITLEN 0
 116 #define REDIS_RDB_14BITLEN 1
 117 #define REDIS_RDB_32BITLEN 2
 118 #define REDIS_RDB_ENCVAL 3
 119 #define REDIS_RDB_LENERR UINT_MAX
 120
 121 /* When a length of a string object stored on disk has the first two bits
 122  * set, the remaining two bits specify a special encoding for the object
 123  * accordingly to the following defines: */
 124 #define REDIS_RDB_ENC_INT8 0        /* 8 bit signed integer */
 125 #define REDIS_RDB_ENC_INT16 1       /* 16 bit signed integer */
 126 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 127 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 128
 129 /* Client flags */
 130 #define REDIS_SLAVE 1       /* This client is a slave server */
 131 #define REDIS_MASTER 2      /* This client is a master server */
 132 #define REDIS_MONITOR 4     /* This client is a slave monitor, see MONITOR */
 133 #define REDIS_MULTI 8       /* This client is in a MULTI context */
 134 #define REDIS_BLOCKED 16    /* The client is waiting in a blocking operation */
 135 #define REDIS_DIRTY_CAS 64  /* Watched keys modified. EXEC will fail. */
 136 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
 137 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
 138                                server.unblocked_clients */
 139 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
 140 #define REDIS_ASKING 1024   /* Client issued the ASKING command */
 141
 142 /* Client request types */
 143 #define REDIS_REQ_INLINE 1
 144 #define REDIS_REQ_MULTIBULK 2
 145
 146 /* Slave replication state - slave side */
 147 #define REDIS_REPL_NONE 0 /* No active replication */
 148 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
 149 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
 150 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
 151 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
 152
 153 /* Synchronous read timeout - slave side */
 154 #define REDIS_REPL_SYNCIO_TIMEOUT 5
 155
 156 /* Slave replication state - from the point of view of master
 157  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 158  * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
 159  * to start the next background saving in order to send updates to it. */
 160 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
 161 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
 162 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
 163 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
 164
 165 /* List related stuff */
 166 #define REDIS_HEAD 0
 167 #define REDIS_TAIL 1
 168
 169 /* Sort operations */
 170 #define REDIS_SORT_GET 0
 171 #define REDIS_SORT_ASC 1
 172 #define REDIS_SORT_DESC 2
 173 #define REDIS_SORTKEY_MAX 1024
 174
 175 /* Log levels */
 176 #define REDIS_DEBUG 0
 177 #define REDIS_VERBOSE 1
 178 #define REDIS_NOTICE 2
 179 #define REDIS_WARNING 3
 180 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
 181
 182 /* Anti-warning macro... */
 183 #define REDIS_NOTUSED(V) ((void) V)
 184
 185 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
 186 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 187
 188 /* Append only defines */
 189 #define APPENDFSYNC_NO 0
 190 #define APPENDFSYNC_ALWAYS 1
 191 #define APPENDFSYNC_EVERYSEC 2
 192
 193 /* Zip structure related defaults */
 194 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 195 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 196 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 197 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 198 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 199 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
 200 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
 201
 202 /* Sets operations codes */
 203 #define REDIS_OP_UNION 0
 204 #define REDIS_OP_DIFF 1
 205 #define REDIS_OP_INTER 2
 206
 207 /* Redis maxmemory strategies */
 208 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
 209 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
 210 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 211 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 212 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 213 #define REDIS_MAXMEMORY_NO_EVICTION 5
 214
 215 /* Scripting */
 216 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
 217
 218 /* We can print the stacktrace, so our assert is defined this way: */
 219 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
 220 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 221 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 222
 223 /*-----------------------------------------------------------------------------
 224  * Data types
 225  *----------------------------------------------------------------------------*/
 226
 227 /* A redis object, that is a type able to hold a string / list / set */
 228
 229 /* The actual Redis Object */
 230 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
 231 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
 232 typedef struct redisObject {
 233     unsigned type:4;
 234     unsigned notused:2;     /* Not used */
 235     unsigned encoding:4;
 236     unsigned lru:22;        /* lru time (relative to server.lruclock) */
 237     int refcount;
 238     void *ptr;
 239     /* VM fields are only allocated if VM is active, otherwise the
 240      * object allocation function will just allocate
 241      * sizeof(redisObjct) minus sizeof(redisObjectVM), so using
 242      * Redis without VM active will not have any overhead. */
 243 } robj;
 244
 245 /* The VM pointer structure - identifies an object in the swap file.
 246  *
 247  * This object is stored in place of the value
 248  * object in the main key->value hash table representing a database.
 249  * Note that the first fields (type, storage) are the same as the redisObject
 250  * structure so that vmPointer strucuters can be accessed even when casted
 251  * as redisObject structures.
 252  *
 253  * This is useful as we don't know if a value object is or not on disk, but we
 254  * are always able to read obj->storage to check this. For vmPointer
 255  * structures "type" is set to REDIS_VMPOINTER (even if without this field
 256  * is still possible to check the kind of object from the value of 'storage').*/
 257 typedef struct vmPointer {
 258     unsigned type:4;
 259     unsigned storage:2; /* REDIS_VM_SWAPPED or REDIS_VM_LOADING */
 260     unsigned notused:26;
 261     unsigned int vtype; /* type of the object stored in the swap file */
 262     off_t page;         /* the page at witch the object is stored on disk */
 263     off_t usedpages;    /* number of pages used on disk */
 264 } vmpointer;
 265
 266 /* Macro used to initalize a Redis object allocated on the stack.
 267  * Note that this macro is taken near the structure definition to make sure
 268  * we'll update it when the structure is changed, to avoid bugs like
 269  * bug #85 introduced exactly in this way. */
 270 #define initStaticStringObject(_var,_ptr) do { \
 271     _var.refcount = 1; \
 272     _var.type = REDIS_STRING; \
 273     _var.encoding = REDIS_ENCODING_RAW; \
 274     _var.ptr = _ptr; \
 275 } while(0);
 276
 277 typedef struct redisDb {
 278     dict *dict;                 /* The keyspace for this DB */
 279     dict *expires;              /* Timeout of keys with a timeout set */
 280     dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */
 281     dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */
 282     int id;
 283 } redisDb;
 284
 285 /* Client MULTI/EXEC state */
 286 typedef struct multiCmd {
 287     robj **argv;
 288     int argc;
 289     struct redisCommand *cmd;
 290 } multiCmd;
 291
 292 typedef struct multiState {
 293     multiCmd *commands;     /* Array of MULTI commands */
 294     int count;              /* Total number of MULTI commands */
 295 } multiState;
 296
 297 typedef struct blockingState {
 298     robj **keys;            /* The key we are waiting to terminate a blocking
 299                              * operation such as BLPOP. Otherwise NULL. */
 300     int count;              /* Number of blocking keys */
 301     time_t timeout;         /* Blocking operation timeout. If UNIX current time
 302                              * is >= timeout then the operation timed out. */
 303     robj *target;           /* The key that should receive the element,
 304                              * for BRPOPLPUSH. */
 305 } blockingState;
 306
 307 /* With multiplexing we need to take per-clinet state.
 308  * Clients are taken in a liked list. */
 309 typedef struct redisClient {
 310     int fd;
 311     redisDb *db;
 312     int dictid;
 313     sds querybuf;
 314     int argc;
 315     robj **argv;
 316     struct redisCommand *cmd;
 317     int reqtype;
 318     int multibulklen;       /* number of multi bulk arguments left to read */
 319     long bulklen;           /* length of bulk argument in multi bulk request */
 320     list *reply;
 321     int sentlen;
 322     time_t lastinteraction; /* time of the last interaction, used for timeout */
 323     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
 324     int slaveseldb;         /* slave selected db, if this client is a slave */
 325     int authenticated;      /* when requirepass is non-NULL */
 326     int replstate;          /* replication state if this is a slave */
 327     int repldbfd;           /* replication DB file descriptor */
 328     long repldboff;         /* replication DB file offset */
 329     off_t repldbsize;       /* replication DB file size */
 330     multiState mstate;      /* MULTI/EXEC state */
 331     blockingState bpop;   /* blocking state */
 332     list *io_keys;          /* Keys this client is waiting to be loaded from the
 333                              * swap file in order to continue. */
 334     list *watched_keys;     /* Keys WATCHED for MULTI/EXEC CAS */
 335     dict *pubsub_channels;  /* channels a client is interested in (SUBSCRIBE) */
 336     list *pubsub_patterns;  /* patterns a client is interested in (SUBSCRIBE) */
 337
 338     /* Response buffer */
 339     int bufpos;
 340     char buf[REDIS_REPLY_CHUNK_BYTES];
 341 } redisClient;
 342
 343 struct saveparam {
 344     time_t seconds;
 345     int changes;
 346 };
 347
 348 struct sharedObjectsStruct {
 349     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
 350     *colon, *nullbulk, *nullmultibulk, *queued,
 351     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
 352     *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,
 353     *select0, *select1, *select2, *select3, *select4,
 354     *select5, *select6, *select7, *select8, *select9,
 355     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
 356     *mbulk4, *psubscribebulk, *punsubscribebulk,
 357     *integers[REDIS_SHARED_INTEGERS];
 358 };
 359
 360 /* ZSETs use a specialized version of Skiplists */
 361 typedef struct zskiplistNode {
 362     robj *obj;
 363     double score;
 364     struct zskiplistNode *backward;
 365     struct zskiplistLevel {
 366         struct zskiplistNode *forward;
 367         unsigned int span;
 368     } level[];
 369 } zskiplistNode;
 370
 371 typedef struct zskiplist {
 372     struct zskiplistNode *header, *tail;
 373     unsigned long length;
 374     int level;
 375 } zskiplist;
 376
 377 typedef struct zset {
 378     dict *dict;
 379     zskiplist *zsl;
 380 } zset;
 381
 382 /*-----------------------------------------------------------------------------
 383  * Redis cluster data structures
 384  *----------------------------------------------------------------------------*/
 385
 386 #define REDIS_CLUSTER_SLOTS 4096
 387 #define REDIS_CLUSTER_OK 0          /* Everything looks ok */
 388 #define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
 389 #define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */
 390 #define REDIS_CLUSTER_NAMELEN 40    /* sha1 hex length */
 391 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
 392
 393 struct clusterNode;
 394
 395 /* clusterLink encapsulates everything needed to talk with a remote node. */
 396 typedef struct clusterLink {
 397     int fd;                     /* TCP socket file descriptor */
 398     sds sndbuf;                 /* Packet send buffer */
 399     sds rcvbuf;                 /* Packet reception buffer */
 400     struct clusterNode *node;   /* Node related to this link if any, or NULL */
 401 } clusterLink;
 402
 403 /* Node flags */
 404 #define REDIS_NODE_MASTER 1     /* The node is a master */
 405 #define REDIS_NODE_SLAVE 2      /* The node is a slave */
 406 #define REDIS_NODE_PFAIL 4      /* Failure? Need acknowledge */
 407 #define REDIS_NODE_FAIL 8       /* The node is believed to be malfunctioning */
 408 #define REDIS_NODE_MYSELF 16    /* This node is myself */
 409 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
 410 #define REDIS_NODE_NOADDR   64  /* We don't know the address of this node */
 411 #define REDIS_NODE_MEET 128     /* Send a MEET message to this node */
 412 #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"
 413
 414 struct clusterNode {
 415     char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
 416     int flags;      /* REDIS_NODE_... */
 417     unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
 418     int numslaves;  /* Number of slave nodes, if this is a master */
 419     struct clusterNode **slaves; /* pointers to slave nodes */
 420     struct clusterNode *slaveof; /* pointer to the master node */
 421     time_t ping_sent;       /* Unix time we sent latest ping */
 422     time_t pong_received;   /* Unix time we received the pong */
 423     char *configdigest;         /* Configuration digest of this node */
 424     time_t configdigest_ts;     /* Configuration digest timestamp */
 425     char ip[16];                /* Latest known IP address of this node */
 426     int port;                   /* Latest known port of this node */
 427     clusterLink *link;          /* TCP/IP link with this node */
 428 };
 429 typedef struct clusterNode clusterNode;
 430
 431 typedef struct {
 432     char *configfile;
 433     clusterNode *myself;  /* This node */
 434     int state;            /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
 435     int node_timeout;
 436     dict *nodes;          /* Hash table of name -> clusterNode structures */
 437     clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
 438     clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
 439     clusterNode *slots[REDIS_CLUSTER_SLOTS];
 440     zskiplist *slots_to_keys;
 441 } clusterState;
 442
 443 /* Redis cluster messages header */
 444
 445 /* Note that the PING, PONG and MEET messages are actually the same exact
 446  * kind of packet. PONG is the reply to ping, in the extact format as a PING,
 447  * while MEET is a special PING that forces the receiver to add the sender
 448  * as a node (if it is not already in the list). */
 449 #define CLUSTERMSG_TYPE_PING 0          /* Ping */
 450 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 451 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 452 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */
 453 #define CLUSTERMSG_TYPE_PUBLISH 4       /* Pub/Sub Publish propatagion */
 454
 455 /* Initially we don't know our "name", but we'll find it once we connect
 456  * to the first node, using the getsockname() function. Then we'll use this
 457  * address for all the next messages. */
 458 typedef struct {
 459     char nodename[REDIS_CLUSTER_NAMELEN];
 460     uint32_t ping_sent;
 461     uint32_t pong_received;
 462     char ip[16];    /* IP address last time it was seen */
 463     uint16_t port;  /* port last time it was seen */
 464     uint16_t flags;
 465     uint32_t notused; /* for 64 bit alignment */
 466 } clusterMsgDataGossip;
 467
 468 typedef struct {
 469     char nodename[REDIS_CLUSTER_NAMELEN];
 470 } clusterMsgDataFail;
 471
 472 typedef struct {
 473     uint32_t channel_len;
 474     uint32_t message_len;
 475     unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
 476 } clusterMsgDataPublish;
 477
 478 union clusterMsgData {
 479     /* PING, MEET and PONG */
 480     struct {
 481         /* Array of N clusterMsgDataGossip structures */
 482         clusterMsgDataGossip gossip[1];
 483     } ping;
 484
 485     /* FAIL */
 486     struct {
 487         clusterMsgDataFail about;
 488     } fail;
 489
 490     /* PUBLISH */
 491     struct {
 492         clusterMsgDataPublish msg;
 493     } publish;
 494 };
 495
 496 typedef struct {
 497     uint32_t totlen;    /* Total length of this message */
 498     uint16_t type;      /* Message type */
 499     uint16_t count;     /* Only used for some kind of messages. */
 500     char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
 501     unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
 502     char slaveof[REDIS_CLUSTER_NAMELEN];
 503     char configdigest[32];
 504     uint16_t port;      /* Sender TCP base port */
 505     unsigned char state; /* Cluster state from the POV of the sender */
 506     unsigned char notused[5]; /* Reserved for future use. For alignment. */
 507     union clusterMsgData data;
 508 } clusterMsg;
 509
 510 /*-----------------------------------------------------------------------------
 511  * Global server state
 512  *----------------------------------------------------------------------------*/
 513
 514 struct redisServer {
 515     /* General */
 516     redisDb *db;
 517     dict *commands;             /* Command table hahs table */
 518     aeEventLoop *el;
 519     /* Networking */
 520     int port;
 521     char *bindaddr;
 522     char *unixsocket;
 523     mode_t unixsocketperm;
 524     int ipfd;
 525     int sofd;
 526     int cfd;
 527     list *clients;
 528     list *slaves, *monitors;
 529     char neterr[ANET_ERR_LEN];
 530     /* RDB / AOF loading information */
 531     int loading;
 532     off_t loading_total_bytes;
 533     off_t loading_loaded_bytes;
 534     time_t loading_start_time;
 535     /* Fast pointers to often looked up command */
 536     struct redisCommand *delCommand, *multiCommand;
 537     int cronloops;              /* number of times the cron function run */
 538     time_t lastsave;                /* Unix time of last save succeeede */
 539     /* Fields used only for stats */
 540     time_t stat_starttime;          /* server start time */
 541     long long stat_numcommands;     /* number of processed commands */
 542     long long stat_numconnections;  /* number of connections received */
 543     long long stat_expiredkeys;     /* number of expired keys */
 544     long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
 545     long long stat_keyspace_hits;   /* number of successful lookups of keys */
 546     long long stat_keyspace_misses; /* number of failed lookups of keys */
 547     size_t stat_peak_memory;        /* max used memory record */
 548     long long stat_fork_time;       /* time needed to perform latets fork() */
 549     list *slowlog;
 550     long long slowlog_entry_id;
 551     long long slowlog_log_slower_than;
 552     unsigned long slowlog_max_len;
 553     /* Configuration */
 554     int verbosity;
 555     int maxidletime;
 556     int dbnum;
 557     int daemonize;
 558     int appendonly;
 559     int appendfsync;
 560     int no_appendfsync_on_rewrite;
 561     int auto_aofrewrite_perc;       /* Rewrite AOF if % growth is > M and... */
 562     off_t auto_aofrewrite_min_size; /* the AOF file is at least N bytes. */
 563     off_t auto_aofrewrite_base_size;/* AOF size on latest startup or rewrite. */
 564     off_t appendonly_current_size;  /* AOF current size. */
 565     int aofrewrite_scheduled;       /* Rewrite once BGSAVE terminates. */
 566     int shutdown_asap;
 567     int activerehashing;
 568     char *requirepass;
 569     /* Persistence */
 570     long long dirty;            /* changes to DB from the last save */
 571     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
 572     time_t lastfsync;
 573     int appendfd;
 574     int appendseldb;
 575     time_t aof_flush_postponed_start;
 576     char *pidfile;
 577     pid_t bgsavechildpid;
 578     pid_t bgrewritechildpid;
 579     sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
 580     sds aofbuf;       /* AOF buffer, written before entering the event loop */
 581     struct saveparam *saveparams;
 582     int saveparamslen;
 583     char *dbfilename;
 584     int rdbcompression;
 585     char *appendfilename;
 586     /* Logging */
 587     char *logfile;
 588     int syslog_enabled;
 589     char *syslog_ident;
 590     int syslog_facility;
 591     /* Replication related */
 592     int isslave;
 593     /* Slave specific fields */
 594     char *masterauth;
 595     char *masterhost;
 596     int masterport;
 597         int repl_ping_slave_period;
 598         int repl_timeout;
 599     redisClient *master;    /* client that is master for this slave */
 600     int repl_syncio_timeout; /* timeout for synchronous I/O calls */
 601     int replstate;          /* replication status if the instance is a slave */
 602     off_t repl_transfer_left;  /* bytes left reading .rdb  */
 603     int repl_transfer_s;    /* slave -> master SYNC socket */
 604     int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
 605     char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
 606     time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
 607     int repl_serve_stale_data; /* Serve stale data when link is down? */
 608     time_t repl_down_since; /* unix time at which link with master went down */
 609     /* Limits */
 610     unsigned int maxclients;
 611     unsigned long long maxmemory;
 612     int maxmemory_policy;
 613     int maxmemory_samples;
 614     /* Blocked clients */
 615     unsigned int bpop_blocked_clients;
 616     list *unblocked_clients; /* list of clients to unblock before next loop */
 617     /* Sort parameters - qsort_r() is only available under BSD so we
 618      * have to take this state global, in order to pass it to sortCompare() */
 619     int sort_desc;
 620     int sort_alpha;
 621     int sort_bypattern;
 622     /* Zip structure config */
 623     size_t hash_max_zipmap_entries;
 624     size_t hash_max_zipmap_value;
 625     size_t list_max_ziplist_entries;
 626     size_t list_max_ziplist_value;
 627     size_t set_max_intset_entries;
 628     size_t zset_max_ziplist_entries;
 629     size_t zset_max_ziplist_value;
 630     time_t unixtime;    /* Unix time sampled every second. */
 631     /* Pubsub */
 632     dict *pubsub_channels; /* Map channels to list of subscribed clients */
 633     list *pubsub_patterns; /* A list of pubsub_patterns */
 634     /* Misc */
 635     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
 636     unsigned lruclock_padding:10;
 637     /* Cluster */
 638     int cluster_enabled;
 639     clusterState cluster;
 640     /* Scripting */
 641     lua_State *lua; /* The Lua interpreter. We use just one for all clients */
 642     redisClient *lua_client; /* The "fake client" to query Redis from Lua */
 643     dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
 644     long long lua_time_limit;
 645     long long lua_time_start;
 646     int lua_random_dirty; /* True if a random command was called during the
 647                              exection of the current script. */
 648     int lua_timedout;     /* True if we reached the time limit for script
 649                              execution. */
 650 };
 651
 652 typedef struct pubsubPattern {
 653     redisClient *client;
 654     robj *pattern;
 655 } pubsubPattern;
 656
 657 typedef void redisCommandProc(redisClient *c);
 658 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 659 struct redisCommand {
 660     char *name;
 661     redisCommandProc *proc;
 662     int arity;
 663     char *sflags; /* Flags as string represenation, one char per flag. */
 664     int flags;    /* The actual flags, obtained from the 'sflags' field. */
 665     /* Use a function to determine keys arguments in a command line.
 666      * Used for Redis Cluster redirect. */
 667     redisGetKeysProc *getkeys_proc;
 668     /* What keys should be loaded in background when calling this command? */
 669     int firstkey; /* The first argument that's a key (0 = no keys) */
 670     int lastkey;  /* THe last argument that's a key */
 671     int keystep;  /* The step between first and last key */
 672     long long microseconds, calls;
 673 };
 674
 675 struct redisFunctionSym {
 676     char *name;
 677     unsigned long pointer;
 678 };
 679
 680 typedef struct _redisSortObject {
 681     robj *obj;
 682     union {
 683         double score;
 684         robj *cmpobj;
 685     } u;
 686 } redisSortObject;
 687
 688 typedef struct _redisSortOperation {
 689     int type;
 690     robj *pattern;
 691 } redisSortOperation;
 692
 693 /* Structure to hold list iteration abstraction. */
 694 typedef struct {
 695     robj *subject;
 696     unsigned char encoding;
 697     unsigned char direction; /* Iteration direction */
 698     unsigned char *zi;
 699     listNode *ln;
 700 } listTypeIterator;
 701
 702 /* Structure for an entry while iterating over a list. */
 703 typedef struct {
 704     listTypeIterator *li;
 705     unsigned char *zi;  /* Entry in ziplist */
 706     listNode *ln;       /* Entry in linked list */
 707 } listTypeEntry;
 708
 709 /* Structure to hold set iteration abstraction. */
 710 typedef struct {
 711     robj *subject;
 712     int encoding;
 713     int ii; /* intset iterator */
 714     dictIterator *di;
 715 } setTypeIterator;
 716
 717 /* Structure to hold hash iteration abstration. Note that iteration over
 718  * hashes involves both fields and values. Because it is possible that
 719  * not both are required, store pointers in the iterator to avoid
 720  * unnecessary memory allocation for fields/values. */
 721 typedef struct {
 722     int encoding;
 723     unsigned char *zi;
 724     unsigned char *zk, *zv;
 725     unsigned int zklen, zvlen;
 726
 727     dictIterator *di;
 728     dictEntry *de;
 729 } hashTypeIterator;
 730
 731 #define REDIS_HASH_KEY 1
 732 #define REDIS_HASH_VALUE 2
 733
 734 /*-----------------------------------------------------------------------------
 735  * Extern declarations
 736  *----------------------------------------------------------------------------*/
 737
 738 extern struct redisServer server;
 739 extern struct sharedObjectsStruct shared;
 740 extern dictType setDictType;
 741 extern dictType zsetDictType;
 742 extern dictType clusterNodesDictType;
 743 extern dictType dbDictType;
 744 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 745 dictType hashDictType;
 746
 747 /*-----------------------------------------------------------------------------
 748  * Functions prototypes
 749  *----------------------------------------------------------------------------*/
 750
 751 /* Utils */
 752 long long ustime(void);
 753
 754 /* networking.c -- Networking and Client related operations */
 755 redisClient *createClient(int fd);
 756 void closeTimedoutClients(void);
 757 void freeClient(redisClient *c);
 758 void resetClient(redisClient *c);
 759 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
 760 void addReply(redisClient *c, robj *obj);
 761 void *addDeferredMultiBulkLength(redisClient *c);
 762 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
 763 void addReplySds(redisClient *c, sds s);
 764 void processInputBuffer(redisClient *c);
 765 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 766 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 767 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 768 void addReplyBulk(redisClient *c, robj *obj);
 769 void addReplyBulkCString(redisClient *c, char *s);
 770 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
 771 void addReplyBulkLongLong(redisClient *c, long long ll);
 772 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 773 void addReply(redisClient *c, robj *obj);
 774 void addReplySds(redisClient *c, sds s);
 775 void addReplyError(redisClient *c, char *err);
 776 void addReplyStatus(redisClient *c, char *status);
 777 void addReplyDouble(redisClient *c, double d);
 778 void addReplyLongLong(redisClient *c, long long ll);
 779 void addReplyMultiBulkLen(redisClient *c, long length);
 780 void *dupClientReplyValue(void *o);
 781 void getClientsMaxBuffers(unsigned long *longest_output_list,
 782                           unsigned long *biggest_input_buffer);
 783 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 784 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
 785
 786 #ifdef __GNUC__
 787 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 788     __attribute__((format(printf, 2, 3)));
 789 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
 790     __attribute__((format(printf, 2, 3)));
 791 #else
 792 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
 793 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
 794 #endif
 795
 796 /* List data type */
 797 void listTypeTryConversion(robj *subject, robj *value);
 798 void listTypePush(robj *subject, robj *value, int where);
 799 robj *listTypePop(robj *subject, int where);
 800 unsigned long listTypeLength(robj *subject);
 801 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
 802 void listTypeReleaseIterator(listTypeIterator *li);
 803 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
 804 robj *listTypeGet(listTypeEntry *entry);
 805 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
 806 int listTypeEqual(listTypeEntry *entry, robj *o);
 807 void listTypeDelete(listTypeEntry *entry);
 808 void listTypeConvert(robj *subject, int enc);
 809 void unblockClientWaitingData(redisClient *c);
 810 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
 811 void popGenericCommand(redisClient *c, int where);
 812
 813 /* MULTI/EXEC/WATCH... */
 814 void unwatchAllKeys(redisClient *c);
 815 void initClientMultiState(redisClient *c);
 816 void freeClientMultiState(redisClient *c);
 817 void queueMultiCommand(redisClient *c);
 818 void touchWatchedKey(redisDb *db, robj *key);
 819 void touchWatchedKeysOnFlush(int dbid);
 820
 821 /* Redis object implementation */
 822 void decrRefCount(void *o);
 823 void incrRefCount(robj *o);
 824 robj *resetRefCount(robj *obj);
 825 void freeStringObject(robj *o);
 826 void freeListObject(robj *o);
 827 void freeSetObject(robj *o);
 828 void freeZsetObject(robj *o);
 829 void freeHashObject(robj *o);
 830 robj *createObject(int type, void *ptr);
 831 robj *createStringObject(char *ptr, size_t len);
 832 robj *dupStringObject(robj *o);
 833 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
 834 robj *tryObjectEncoding(robj *o);
 835 robj *getDecodedObject(robj *o);
 836 size_t stringObjectLen(robj *o);
 837 robj *createStringObjectFromLongLong(long long value);
 838 robj *createListObject(void);
 839 robj *createZiplistObject(void);
 840 robj *createSetObject(void);
 841 robj *createIntsetObject(void);
 842 robj *createHashObject(void);
 843 robj *createZsetObject(void);
 844 robj *createZsetZiplistObject(void);
 845 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
 846 int checkType(redisClient *c, robj *o, int type);
 847 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 848 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 849 int getLongLongFromObject(robj *o, long long *target);
 850 char *strEncoding(int encoding);
 851 int compareStringObjects(robj *a, robj *b);
 852 int equalStringObjects(robj *a, robj *b);
 853 unsigned long estimateObjectIdleTime(robj *o);
 854
 855 /* Synchronous I/O with timeout */
 856 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
 857 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
 858 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
 859
 860 /* Replication */
 861 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 862 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 863 void updateSlavesWaitingBgsave(int bgsaveerr);
 864 void replicationCron(void);
 865
 866 /* Generic persistence functions */
 867 void startLoading(FILE *fp);
 868 void loadingProgress(off_t pos);
 869 void stopLoading(void);
 870
 871 /* RDB persistence */
 872 #include "rdb.h"
 873
 874 /* AOF persistence */
 875 void flushAppendOnlyFile(int force);
 876 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
 877 void aofRemoveTempFile(pid_t childpid);
 878 int rewriteAppendOnlyFileBackground(void);
 879 int loadAppendOnlyFile(char *filename);
 880 void stopAppendOnly(void);
 881 int startAppendOnly(void);
 882 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
 883
 884 /* Sorted sets data type */
 885
 886 /* Struct to hold a inclusive/exclusive range spec. */
 887 typedef struct {
 888     double min, max;
 889     int minex, maxex; /* are min or max exclusive? */
 890 } zrangespec;
 891
 892 zskiplist *zslCreate(void);
 893 void zslFree(zskiplist *zsl);
 894 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 895 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
 896 int zslDelete(zskiplist *zsl, double score, robj *obj);
 897 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
 898 double zzlGetScore(unsigned char *sptr);
 899 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 900 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 901 unsigned int zsetLength(robj *zobj);
 902 void zsetConvert(robj *zobj, int encoding);
 903
 904 /* Core functions */
 905 void freeMemoryIfNeeded(void);
 906 int processCommand(redisClient *c);
 907 void setupSignalHandlers(void);
 908 struct redisCommand *lookupCommand(sds name);
 909 struct redisCommand *lookupCommandByCString(char *s);
 910 void call(redisClient *c);
 911 int prepareForShutdown();
 912 void redisLog(int level, const char *fmt, ...);
 913 void redisLogRaw(int level, const char *msg);
 914 void usage();
 915 void updateDictResizePolicy(void);
 916 int htNeedsResize(dict *dict);
 917 void oom(const char *msg);
 918 void populateCommandTable(void);
 919 void resetCommandTableStats(void);
 920
 921 /* Set data type */
 922 robj *setTypeCreate(robj *value);
 923 int setTypeAdd(robj *subject, robj *value);
 924 int setTypeRemove(robj *subject, robj *value);
 925 int setTypeIsMember(robj *subject, robj *value);
 926 setTypeIterator *setTypeInitIterator(robj *subject);
 927 void setTypeReleaseIterator(setTypeIterator *si);
 928 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
 929 robj *setTypeNextObject(setTypeIterator *si);
 930 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
 931 unsigned long setTypeSize(robj *subject);
 932 void setTypeConvert(robj *subject, int enc);
 933
 934 /* Hash data type */
 935 void convertToRealHash(robj *o);
 936 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 937 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 938 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
 939 robj *hashTypeGetObject(robj *o, robj *key);
 940 int hashTypeExists(robj *o, robj *key);
 941 int hashTypeSet(robj *o, robj *key, robj *value);
 942 int hashTypeDelete(robj *o, robj *key);
 943 unsigned long hashTypeLength(robj *o);
 944 hashTypeIterator *hashTypeInitIterator(robj *subject);
 945 void hashTypeReleaseIterator(hashTypeIterator *hi);
 946 int hashTypeNext(hashTypeIterator *hi);
 947 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
 948 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 949 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 950
 951 /* Pub / Sub */
 952 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 953 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 954 void freePubsubPattern(void *p);
 955 int listMatchPubsubPattern(void *a, void *b);
 956 int pubsubPublishMessage(robj *channel, robj *message);
 957
 958 /* Configuration */
 959 void loadServerConfig(char *filename);
 960 void appendServerSaveParams(time_t seconds, int changes);
 961 void resetServerSaveParams();
 962
 963 /* db.c -- Keyspace access API */
 964 int removeExpire(redisDb *db, robj *key);
 965 void propagateExpire(redisDb *db, robj *key);
 966 int expireIfNeeded(redisDb *db, robj *key);
 967 time_t getExpire(redisDb *db, robj *key);
 968 void setExpire(redisDb *db, robj *key, time_t when);
 969 robj *lookupKey(redisDb *db, robj *key);
 970 robj *lookupKeyRead(redisDb *db, robj *key);
 971 robj *lookupKeyWrite(redisDb *db, robj *key);
 972 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
 973 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
 974 void dbAdd(redisDb *db, robj *key, robj *val);
 975 void dbOverwrite(redisDb *db, robj *key, robj *val);
 976 void setKey(redisDb *db, robj *key, robj *val);
 977 int dbExists(redisDb *db, robj *key);
 978 robj *dbRandomKey(redisDb *db);
 979 int dbDelete(redisDb *db, robj *key);
 980 long long emptyDb();
 981 int selectDb(redisClient *c, int id);
 982 void signalModifiedKey(redisDb *db, robj *key);
 983 void signalFlushedDb(int dbid);
 984 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
 985
 986 /* API to get key arguments from commands */
 987 #define REDIS_GETKEYS_ALL 0
 988 #define REDIS_GETKEYS_PRELOAD 1
 989 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 990 void getKeysFreeResult(int *result);
 991 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 992 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 993 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 994
 995 /* Cluster */
 996 void clusterInit(void);
 997 unsigned short crc16(const char *buf, int len);
 998 unsigned int keyHashSlot(char *key, int keylen);
 999 clusterNode *createClusterNode(char *nodename, int flags);
1000 int clusterAddNode(clusterNode *node);
1001 void clusterCron(void);
1002 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
1003 void clusterPropagatePublish(robj *channel, robj *message);
1004
1005 /* Scripting */
1006 void scriptingInit(void);
1007
1008 /* Git SHA1 */
1009 char *redisGitSHA1(void);
1010 char *redisGitDirty(void);
1011
1012 /* Commands prototypes */
1013 void authCommand(redisClient *c);
1014 void pingCommand(redisClient *c);
1015 void echoCommand(redisClient *c);
1016 void setCommand(redisClient *c);
1017 void setnxCommand(redisClient *c);
1018 void setexCommand(redisClient *c);
1019 void getCommand(redisClient *c);
1020 void delCommand(redisClient *c);
1021 void existsCommand(redisClient *c);
1022 void setbitCommand(redisClient *c);
1023 void getbitCommand(redisClient *c);
1024 void setrangeCommand(redisClient *c);
1025 void getrangeCommand(redisClient *c);
1026 void incrCommand(redisClient *c);
1027 void decrCommand(redisClient *c);
1028 void incrbyCommand(redisClient *c);
1029 void decrbyCommand(redisClient *c);
1030 void selectCommand(redisClient *c);
1031 void randomkeyCommand(redisClient *c);
1032 void keysCommand(redisClient *c);
1033 void dbsizeCommand(redisClient *c);
1034 void lastsaveCommand(redisClient *c);
1035 void saveCommand(redisClient *c);
1036 void bgsaveCommand(redisClient *c);
1037 void bgrewriteaofCommand(redisClient *c);
1038 void shutdownCommand(redisClient *c);
1039 void moveCommand(redisClient *c);
1040 void renameCommand(redisClient *c);
1041 void renamenxCommand(redisClient *c);
1042 void lpushCommand(redisClient *c);
1043 void rpushCommand(redisClient *c);
1044 void lpushxCommand(redisClient *c);
1045 void rpushxCommand(redisClient *c);
1046 void linsertCommand(redisClient *c);
1047 void lpopCommand(redisClient *c);
1048 void rpopCommand(redisClient *c);
1049 void llenCommand(redisClient *c);
1050 void lindexCommand(redisClient *c);
1051 void lrangeCommand(redisClient *c);
1052 void ltrimCommand(redisClient *c);
1053 void typeCommand(redisClient *c);
1054 void lsetCommand(redisClient *c);
1055 void saddCommand(redisClient *c);
1056 void sremCommand(redisClient *c);
1057 void smoveCommand(redisClient *c);
1058 void sismemberCommand(redisClient *c);
1059 void scardCommand(redisClient *c);
1060 void spopCommand(redisClient *c);
1061 void srandmemberCommand(redisClient *c);
1062 void sinterCommand(redisClient *c);
1063 void sinterstoreCommand(redisClient *c);
1064 void sunionCommand(redisClient *c);
1065 void sunionstoreCommand(redisClient *c);
1066 void sdiffCommand(redisClient *c);
1067 void sdiffstoreCommand(redisClient *c);
1068 void syncCommand(redisClient *c);
1069 void flushdbCommand(redisClient *c);
1070 void flushallCommand(redisClient *c);
1071 void sortCommand(redisClient *c);
1072 void lremCommand(redisClient *c);
1073 void rpoplpushCommand(redisClient *c);
1074 void infoCommand(redisClient *c);
1075 void mgetCommand(redisClient *c);
1076 void monitorCommand(redisClient *c);
1077 void expireCommand(redisClient *c);
1078 void expireatCommand(redisClient *c);
1079 void getsetCommand(redisClient *c);
1080 void ttlCommand(redisClient *c);
1081 void persistCommand(redisClient *c);
1082 void slaveofCommand(redisClient *c);
1083 void debugCommand(redisClient *c);
1084 void msetCommand(redisClient *c);
1085 void msetnxCommand(redisClient *c);
1086 void zaddCommand(redisClient *c);
1087 void zincrbyCommand(redisClient *c);
1088 void zrangeCommand(redisClient *c);
1089 void zrangebyscoreCommand(redisClient *c);
1090 void zrevrangebyscoreCommand(redisClient *c);
1091 void zcountCommand(redisClient *c);
1092 void zrevrangeCommand(redisClient *c);
1093 void zcardCommand(redisClient *c);
1094 void zremCommand(redisClient *c);
1095 void zscoreCommand(redisClient *c);
1096 void zremrangebyscoreCommand(redisClient *c);
1097 void multiCommand(redisClient *c);
1098 void execCommand(redisClient *c);
1099 void discardCommand(redisClient *c);
1100 void blpopCommand(redisClient *c);
1101 void brpopCommand(redisClient *c);
1102 void brpoplpushCommand(redisClient *c);
1103 void appendCommand(redisClient *c);
1104 void strlenCommand(redisClient *c);
1105 void zrankCommand(redisClient *c);
1106 void zrevrankCommand(redisClient *c);
1107 void hsetCommand(redisClient *c);
1108 void hsetnxCommand(redisClient *c);
1109 void hgetCommand(redisClient *c);
1110 void hmsetCommand(redisClient *c);
1111 void hmgetCommand(redisClient *c);
1112 void hdelCommand(redisClient *c);
1113 void hlenCommand(redisClient *c);
1114 void zremrangebyrankCommand(redisClient *c);
1115 void zunionstoreCommand(redisClient *c);
1116 void zinterstoreCommand(redisClient *c);
1117 void hkeysCommand(redisClient *c);
1118 void hvalsCommand(redisClient *c);
1119 void hgetallCommand(redisClient *c);
1120 void hexistsCommand(redisClient *c);
1121 void configCommand(redisClient *c);
1122 void hincrbyCommand(redisClient *c);
1123 void subscribeCommand(redisClient *c);
1124 void unsubscribeCommand(redisClient *c);
1125 void psubscribeCommand(redisClient *c);
1126 void punsubscribeCommand(redisClient *c);
1127 void publishCommand(redisClient *c);
1128 void watchCommand(redisClient *c);
1129 void unwatchCommand(redisClient *c);
1130 void clusterCommand(redisClient *c);
1131 void restoreCommand(redisClient *c);
1132 void migrateCommand(redisClient *c);
1133 void askingCommand(redisClient *c);
1134 void dumpCommand(redisClient *c);
1135 void objectCommand(redisClient *c);
1136 void clientCommand(redisClient *c);
1137 void evalCommand(redisClient *c);
1138 void evalShaCommand(redisClient *c);
1139 void scriptCommand(redisClient *c);
1140
1141 #if defined(__GNUC__)
1142 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1143 void free(void *ptr) __attribute__ ((deprecated));
1144 void *malloc(size_t size) __attribute__ ((deprecated));
1145 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1146 #endif
1147
1148 /* Debugging stuff */
1149 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1150 void _redisAssert(char *estr, char *file, int line);
1151 void _redisPanic(char *msg, char *file, int line);
1152
1153 #endif