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_MAX_QUERYBUF_LEN  (1024*1024*1024) /* 1GB max query buffer. */
  44 #define REDIS_IOBUF_LEN         (1024*16)
  45 #define REDIS_LOADBUF_LEN       1024
  46 #define REDIS_DEFAULT_DBNUM     16
  47 #define REDIS_CONFIGLINE_MAX    1024
  48 #define REDIS_MAX_SYNC_TIME     60      /* Slave can't take more to sync */
  49 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
  50 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
  51 #define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */
  52 #define REDIS_SHARED_INTEGERS 10000
  53 #define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
  54 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
  55 #define REDIS_AUTO_AOFREWRITE_PERC  100
  56 #define REDIS_AUTO_AOFREWRITE_MIN_SIZE (1024*1024)
  57 #define REDIS_AOFREWRITE_ITEMS_PER_CMD 64
  58 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
  59 #define REDIS_SLOWLOG_MAX_LEN 64
  60 #define REDIS_MAX_CLIENTS 10000
  61
  62 #define REDIS_REPL_TIMEOUT 60
  63 #define REDIS_REPL_PING_SLAVE_PERIOD 10
  64 #define REDIS_MBULK_BIG_ARG (1024*32)
  65
  66 /* Hash table parameters */
  67 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
  68
  69 /* Command flags. Please check the command table defined in the redis.c file
  70  * for more information about the meaning of every flag. */
  71 #define REDIS_CMD_WRITE 1                   /* "w" flag */
  72 #define REDIS_CMD_READONLY 2                /* "r" flag */
  73 #define REDIS_CMD_DENYOOM 4                 /* "m" flag */
  74 #define REDIS_CMD_FORCE_REPLICATION 8       /* "f" flag */
  75 #define REDIS_CMD_ADMIN 16                  /* "a" flag */
  76 #define REDIS_CMD_PUBSUB 32                 /* "p" flag */
  77 #define REDIS_CMD_NOSCRIPT  64              /* "s" flag */
  78 #define REDIS_CMD_RANDOM 128                /* "R" flag */
  79
  80 /* Object types */
  81 #define REDIS_STRING 0
  82 #define REDIS_LIST 1
  83 #define REDIS_SET 2
  84 #define REDIS_ZSET 3
  85 #define REDIS_HASH 4
  86 #define REDIS_VMPOINTER 8
  87
  88 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  89  * internally represented in multiple ways. The 'encoding' field of the object
  90  * is set to one of this fields for this object. */
  91 #define REDIS_ENCODING_RAW 0     /* Raw representation */
  92 #define REDIS_ENCODING_INT 1     /* Encoded as integer */
  93 #define REDIS_ENCODING_HT 2      /* Encoded as hash table */
  94 #define REDIS_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
  95 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
  96 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
  97 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
  98 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
  99
 100 /* Defines related to the dump file format. To store 32 bits lengths for short
 101  * keys requires a lot of space, so we check the most significant 2 bits of
 102  * the first byte to interpreter the length:
 103  *
 104  * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
 105  * 01|000000 00000000 =>  01, the len is 14 byes, 6 bits + 8 bits of next byte
 106  * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
 107  * 11|000000 this means: specially encoded object will follow. The six bits
 108  *           number specify the kind of object that follows.
 109  *           See the REDIS_RDB_ENC_* defines.
 110  *
 111  * Lenghts up to 63 are stored using a single byte, most DB keys, and may
 112  * values, will fit inside. */
 113 #define REDIS_RDB_6BITLEN 0
 114 #define REDIS_RDB_14BITLEN 1
 115 #define REDIS_RDB_32BITLEN 2
 116 #define REDIS_RDB_ENCVAL 3
 117 #define REDIS_RDB_LENERR UINT_MAX
 118
 119 /* When a length of a string object stored on disk has the first two bits
 120  * set, the remaining two bits specify a special encoding for the object
 121  * accordingly to the following defines: */
 122 #define REDIS_RDB_ENC_INT8 0        /* 8 bit signed integer */
 123 #define REDIS_RDB_ENC_INT16 1       /* 16 bit signed integer */
 124 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 125 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 126
 127 /* Client flags */
 128 #define REDIS_SLAVE 1       /* This client is a slave server */
 129 #define REDIS_MASTER 2      /* This client is a master server */
 130 #define REDIS_MONITOR 4     /* This client is a slave monitor, see MONITOR */
 131 #define REDIS_MULTI 8       /* This client is in a MULTI context */
 132 #define REDIS_BLOCKED 16    /* The client is waiting in a blocking operation */
 133 #define REDIS_DIRTY_CAS 64  /* Watched keys modified. EXEC will fail. */
 134 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
 135 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
 136                                server.unblocked_clients */
 137 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
 138 #define REDIS_ASKING 1024   /* Client issued the ASKING command */
 139
 140 /* Client request types */
 141 #define REDIS_REQ_INLINE 1
 142 #define REDIS_REQ_MULTIBULK 2
 143
 144 /* Slave replication state - slave side */
 145 #define REDIS_REPL_NONE 0 /* No active replication */
 146 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
 147 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
 148 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
 149 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
 150
 151 /* Synchronous read timeout - slave side */
 152 #define REDIS_REPL_SYNCIO_TIMEOUT 5
 153
 154 /* Slave replication state - from the point of view of master
 155  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 156  * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
 157  * to start the next background saving in order to send updates to it. */
 158 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
 159 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
 160 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
 161 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
 162
 163 /* List related stuff */
 164 #define REDIS_HEAD 0
 165 #define REDIS_TAIL 1
 166
 167 /* Sort operations */
 168 #define REDIS_SORT_GET 0
 169 #define REDIS_SORT_ASC 1
 170 #define REDIS_SORT_DESC 2
 171 #define REDIS_SORTKEY_MAX 1024
 172
 173 /* Log levels */
 174 #define REDIS_DEBUG 0
 175 #define REDIS_VERBOSE 1
 176 #define REDIS_NOTICE 2
 177 #define REDIS_WARNING 3
 178 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
 179
 180 /* Anti-warning macro... */
 181 #define REDIS_NOTUSED(V) ((void) V)
 182
 183 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
 184 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 185
 186 /* Append only defines */
 187 #define APPENDFSYNC_NO 0
 188 #define APPENDFSYNC_ALWAYS 1
 189 #define APPENDFSYNC_EVERYSEC 2
 190
 191 /* Zip structure related defaults */
 192 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 193 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 194 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 195 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 196 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 197 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
 198 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
 199
 200 /* Sets operations codes */
 201 #define REDIS_OP_UNION 0
 202 #define REDIS_OP_DIFF 1
 203 #define REDIS_OP_INTER 2
 204
 205 /* Redis maxmemory strategies */
 206 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
 207 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
 208 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 209 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 210 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 211 #define REDIS_MAXMEMORY_NO_EVICTION 5
 212
 213 /* Scripting */
 214 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
 215
 216 /* Units */
 217 #define UNIT_SECONDS 0
 218 #define UNIT_MILLISECONDS 1
 219
 220 /* SHUTDOWN flags */
 221 #define REDIS_SHUTDOWN_SAVE 1       /* Force SAVE on SHUTDOWN even if no save
 222                                        points are configured. */
 223 #define REDIS_SHUTDOWN_NOSAVE 2     /* Don't SAVE on SHUTDOWN. */
 224
 225 /* We can print the stacktrace, so our assert is defined this way: */
 226 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
 227 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 228 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 229
 230 /*-----------------------------------------------------------------------------
 231  * Data types
 232  *----------------------------------------------------------------------------*/
 233
 234 /* A redis object, that is a type able to hold a string / list / set */
 235
 236 /* The actual Redis Object */
 237 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
 238 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
 239 typedef struct redisObject {
 240     unsigned type:4;
 241     unsigned notused:2;     /* Not used */
 242     unsigned encoding:4;
 243     unsigned lru:22;        /* lru time (relative to server.lruclock) */
 244     int refcount;
 245     void *ptr;
 246 } robj;
 247
 248 /* Macro used to initalize a Redis object allocated on the stack.
 249  * Note that this macro is taken near the structure definition to make sure
 250  * we'll update it when the structure is changed, to avoid bugs like
 251  * bug #85 introduced exactly in this way. */
 252 #define initStaticStringObject(_var,_ptr) do { \
 253     _var.refcount = 1; \
 254     _var.type = REDIS_STRING; \
 255     _var.encoding = REDIS_ENCODING_RAW; \
 256     _var.ptr = _ptr; \
 257 } while(0);
 258
 259 typedef struct redisDb {
 260     dict *dict;                 /* The keyspace for this DB */
 261     dict *expires;              /* Timeout of keys with a timeout set */
 262     dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */
 263     dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */
 264     int id;
 265 } redisDb;
 266
 267 /* Client MULTI/EXEC state */
 268 typedef struct multiCmd {
 269     robj **argv;
 270     int argc;
 271     struct redisCommand *cmd;
 272 } multiCmd;
 273
 274 typedef struct multiState {
 275     multiCmd *commands;     /* Array of MULTI commands */
 276     int count;              /* Total number of MULTI commands */
 277 } multiState;
 278
 279 typedef struct blockingState {
 280     robj **keys;            /* The key we are waiting to terminate a blocking
 281                              * operation such as BLPOP. Otherwise NULL. */
 282     int count;              /* Number of blocking keys */
 283     time_t timeout;         /* Blocking operation timeout. If UNIX current time
 284                              * is >= timeout then the operation timed out. */
 285     robj *target;           /* The key that should receive the element,
 286                              * for BRPOPLPUSH. */
 287 } blockingState;
 288
 289 /* With multiplexing we need to take per-clinet state.
 290  * Clients are taken in a liked list. */
 291 typedef struct redisClient {
 292     int fd;
 293     redisDb *db;
 294     int dictid;
 295     sds querybuf;
 296     int argc;
 297     robj **argv;
 298     struct redisCommand *cmd, *lastcmd;
 299     int reqtype;
 300     int multibulklen;       /* number of multi bulk arguments left to read */
 301     long bulklen;           /* length of bulk argument in multi bulk request */
 302     list *reply;
 303     int sentlen;
 304     time_t lastinteraction; /* time of the last interaction, used for timeout */
 305     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
 306     int slaveseldb;         /* slave selected db, if this client is a slave */
 307     int authenticated;      /* when requirepass is non-NULL */
 308     int replstate;          /* replication state if this is a slave */
 309     int repldbfd;           /* replication DB file descriptor */
 310     long repldboff;         /* replication DB file offset */
 311     off_t repldbsize;       /* replication DB file size */
 312     multiState mstate;      /* MULTI/EXEC state */
 313     blockingState bpop;   /* blocking state */
 314     list *io_keys;          /* Keys this client is waiting to be loaded from the
 315                              * swap file in order to continue. */
 316     list *watched_keys;     /* Keys WATCHED for MULTI/EXEC CAS */
 317     dict *pubsub_channels;  /* channels a client is interested in (SUBSCRIBE) */
 318     list *pubsub_patterns;  /* patterns a client is interested in (SUBSCRIBE) */
 319
 320     /* Response buffer */
 321     int bufpos;
 322     char buf[REDIS_REPLY_CHUNK_BYTES];
 323 } redisClient;
 324
 325 struct saveparam {
 326     time_t seconds;
 327     int changes;
 328 };
 329
 330 struct sharedObjectsStruct {
 331     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
 332     *colon, *nullbulk, *nullmultibulk, *queued,
 333     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
 334     *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,
 335     *select0, *select1, *select2, *select3, *select4,
 336     *select5, *select6, *select7, *select8, *select9,
 337     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
 338     *mbulk4, *psubscribebulk, *punsubscribebulk,
 339     *integers[REDIS_SHARED_INTEGERS];
 340 };
 341
 342 /* ZSETs use a specialized version of Skiplists */
 343 typedef struct zskiplistNode {
 344     robj *obj;
 345     double score;
 346     struct zskiplistNode *backward;
 347     struct zskiplistLevel {
 348         struct zskiplistNode *forward;
 349         unsigned int span;
 350     } level[];
 351 } zskiplistNode;
 352
 353 typedef struct zskiplist {
 354     struct zskiplistNode *header, *tail;
 355     unsigned long length;
 356     int level;
 357 } zskiplist;
 358
 359 typedef struct zset {
 360     dict *dict;
 361     zskiplist *zsl;
 362 } zset;
 363
 364 /*-----------------------------------------------------------------------------
 365  * Redis cluster data structures
 366  *----------------------------------------------------------------------------*/
 367
 368 #define REDIS_CLUSTER_SLOTS 4096
 369 #define REDIS_CLUSTER_OK 0          /* Everything looks ok */
 370 #define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
 371 #define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */
 372 #define REDIS_CLUSTER_NAMELEN 40    /* sha1 hex length */
 373 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
 374
 375 struct clusterNode;
 376
 377 /* clusterLink encapsulates everything needed to talk with a remote node. */
 378 typedef struct clusterLink {
 379     int fd;                     /* TCP socket file descriptor */
 380     sds sndbuf;                 /* Packet send buffer */
 381     sds rcvbuf;                 /* Packet reception buffer */
 382     struct clusterNode *node;   /* Node related to this link if any, or NULL */
 383 } clusterLink;
 384
 385 /* Node flags */
 386 #define REDIS_NODE_MASTER 1     /* The node is a master */
 387 #define REDIS_NODE_SLAVE 2      /* The node is a slave */
 388 #define REDIS_NODE_PFAIL 4      /* Failure? Need acknowledge */
 389 #define REDIS_NODE_FAIL 8       /* The node is believed to be malfunctioning */
 390 #define REDIS_NODE_MYSELF 16    /* This node is myself */
 391 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
 392 #define REDIS_NODE_NOADDR   64  /* We don't know the address of this node */
 393 #define REDIS_NODE_MEET 128     /* Send a MEET message to this node */
 394 #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"
 395
 396 struct clusterNode {
 397     char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
 398     int flags;      /* REDIS_NODE_... */
 399     unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
 400     int numslaves;  /* Number of slave nodes, if this is a master */
 401     struct clusterNode **slaves; /* pointers to slave nodes */
 402     struct clusterNode *slaveof; /* pointer to the master node */
 403     time_t ping_sent;       /* Unix time we sent latest ping */
 404     time_t pong_received;   /* Unix time we received the pong */
 405     char *configdigest;         /* Configuration digest of this node */
 406     time_t configdigest_ts;     /* Configuration digest timestamp */
 407     char ip[16];                /* Latest known IP address of this node */
 408     int port;                   /* Latest known port of this node */
 409     clusterLink *link;          /* TCP/IP link with this node */
 410 };
 411 typedef struct clusterNode clusterNode;
 412
 413 typedef struct {
 414     char *configfile;
 415     clusterNode *myself;  /* This node */
 416     int state;            /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
 417     int node_timeout;
 418     dict *nodes;          /* Hash table of name -> clusterNode structures */
 419     clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
 420     clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
 421     clusterNode *slots[REDIS_CLUSTER_SLOTS];
 422     zskiplist *slots_to_keys;
 423 } clusterState;
 424
 425 /* Redis cluster messages header */
 426
 427 /* Note that the PING, PONG and MEET messages are actually the same exact
 428  * kind of packet. PONG is the reply to ping, in the extact format as a PING,
 429  * while MEET is a special PING that forces the receiver to add the sender
 430  * as a node (if it is not already in the list). */
 431 #define CLUSTERMSG_TYPE_PING 0          /* Ping */
 432 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 433 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 434 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */
 435 #define CLUSTERMSG_TYPE_PUBLISH 4       /* Pub/Sub Publish propatagion */
 436
 437 /* Initially we don't know our "name", but we'll find it once we connect
 438  * to the first node, using the getsockname() function. Then we'll use this
 439  * address for all the next messages. */
 440 typedef struct {
 441     char nodename[REDIS_CLUSTER_NAMELEN];
 442     uint32_t ping_sent;
 443     uint32_t pong_received;
 444     char ip[16];    /* IP address last time it was seen */
 445     uint16_t port;  /* port last time it was seen */
 446     uint16_t flags;
 447     uint32_t notused; /* for 64 bit alignment */
 448 } clusterMsgDataGossip;
 449
 450 typedef struct {
 451     char nodename[REDIS_CLUSTER_NAMELEN];
 452 } clusterMsgDataFail;
 453
 454 typedef struct {
 455     uint32_t channel_len;
 456     uint32_t message_len;
 457     unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
 458 } clusterMsgDataPublish;
 459
 460 union clusterMsgData {
 461     /* PING, MEET and PONG */
 462     struct {
 463         /* Array of N clusterMsgDataGossip structures */
 464         clusterMsgDataGossip gossip[1];
 465     } ping;
 466
 467     /* FAIL */
 468     struct {
 469         clusterMsgDataFail about;
 470     } fail;
 471
 472     /* PUBLISH */
 473     struct {
 474         clusterMsgDataPublish msg;
 475     } publish;
 476 };
 477
 478 typedef struct {
 479     uint32_t totlen;    /* Total length of this message */
 480     uint16_t type;      /* Message type */
 481     uint16_t count;     /* Only used for some kind of messages. */
 482     char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
 483     unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
 484     char slaveof[REDIS_CLUSTER_NAMELEN];
 485     char configdigest[32];
 486     uint16_t port;      /* Sender TCP base port */
 487     unsigned char state; /* Cluster state from the POV of the sender */
 488     unsigned char notused[5]; /* Reserved for future use. For alignment. */
 489     union clusterMsgData data;
 490 } clusterMsg;
 491
 492 /*-----------------------------------------------------------------------------
 493  * Global server state
 494  *----------------------------------------------------------------------------*/
 495
 496 struct redisServer {
 497     /* General */
 498     redisDb *db;
 499     dict *commands;             /* Command table hahs table */
 500     aeEventLoop *el;
 501     /* Networking */
 502     int port;
 503     char *bindaddr;
 504     char *unixsocket;
 505     mode_t unixsocketperm;
 506     int ipfd;
 507     int sofd;
 508     int cfd;
 509     list *clients;
 510     list *slaves, *monitors;
 511     char neterr[ANET_ERR_LEN];
 512     /* RDB / AOF loading information */
 513     int loading;
 514     off_t loading_total_bytes;
 515     off_t loading_loaded_bytes;
 516     time_t loading_start_time;
 517     /* Fast pointers to often looked up command */
 518     struct redisCommand *delCommand, *multiCommand;
 519     int cronloops;              /* number of times the cron function run */
 520     time_t lastsave;                /* Unix time of last save succeeede */
 521     /* Fields used only for stats */
 522     time_t stat_starttime;          /* server start time */
 523     long long stat_numcommands;     /* number of processed commands */
 524     long long stat_numconnections;  /* number of connections received */
 525     long long stat_expiredkeys;     /* number of expired keys */
 526     long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
 527     long long stat_keyspace_hits;   /* number of successful lookups of keys */
 528     long long stat_keyspace_misses; /* number of failed lookups of keys */
 529     size_t stat_peak_memory;        /* max used memory record */
 530     long long stat_fork_time;       /* time needed to perform latets fork() */
 531     long long stat_rejected_conn;   /* clients rejected because of maxclients */
 532     list *slowlog;
 533     long long slowlog_entry_id;
 534     long long slowlog_log_slower_than;
 535     unsigned long slowlog_max_len;
 536     /* Configuration */
 537     int verbosity;
 538     int maxidletime;
 539     size_t client_max_querybuf_len;
 540     int dbnum;
 541     int daemonize;
 542     int appendonly;
 543     int appendfsync;
 544     int no_appendfsync_on_rewrite;
 545     int auto_aofrewrite_perc;       /* Rewrite AOF if % growth is > M and... */
 546     off_t auto_aofrewrite_min_size; /* the AOF file is at least N bytes. */
 547     off_t auto_aofrewrite_base_size;/* AOF size on latest startup or rewrite. */
 548     off_t appendonly_current_size;  /* AOF current size. */
 549     int aofrewrite_scheduled;       /* Rewrite once BGSAVE terminates. */
 550     int shutdown_asap;              /* SHUTDOWN needed */
 551     int activerehashing;
 552     char *requirepass;
 553     /* Persistence */
 554     long long dirty;            /* changes to DB from the last save */
 555     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
 556     time_t lastfsync;
 557     int appendfd;
 558     int appendseldb;
 559     time_t aof_flush_postponed_start;
 560     char *pidfile;
 561     pid_t bgsavechildpid;
 562     pid_t bgrewritechildpid;
 563     sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
 564     sds aofbuf;       /* AOF buffer, written before entering the event loop */
 565     struct saveparam *saveparams;
 566     int saveparamslen;
 567     char *dbfilename;
 568     int rdbcompression;
 569     char *appendfilename;
 570     /* Logging */
 571     char *logfile;
 572     int syslog_enabled;
 573     char *syslog_ident;
 574     int syslog_facility;
 575     /* Replication related */
 576     int isslave;
 577     /* Slave specific fields */
 578     char *masterauth;
 579     char *masterhost;
 580     int masterport;
 581     int repl_ping_slave_period;
 582     int repl_timeout;
 583     redisClient *master;    /* client that is master for this slave */
 584     int repl_syncio_timeout; /* timeout for synchronous I/O calls */
 585     int replstate;          /* replication status if the instance is a slave */
 586     off_t repl_transfer_left;  /* bytes left reading .rdb  */
 587     int repl_transfer_s;    /* slave -> master SYNC socket */
 588     int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
 589     char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
 590     time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
 591     int repl_serve_stale_data; /* Serve stale data when link is down? */
 592     time_t repl_down_since; /* unix time at which link with master went down */
 593     /* Limits */
 594     unsigned int maxclients;
 595     unsigned long long maxmemory;
 596     int maxmemory_policy;
 597     int maxmemory_samples;
 598     /* Blocked clients */
 599     unsigned int bpop_blocked_clients;
 600     list *unblocked_clients; /* list of clients to unblock before next loop */
 601     /* Sort parameters - qsort_r() is only available under BSD so we
 602      * have to take this state global, in order to pass it to sortCompare() */
 603     int sort_desc;
 604     int sort_alpha;
 605     int sort_bypattern;
 606     /* Zip structure config */
 607     size_t hash_max_zipmap_entries;
 608     size_t hash_max_zipmap_value;
 609     size_t list_max_ziplist_entries;
 610     size_t list_max_ziplist_value;
 611     size_t set_max_intset_entries;
 612     size_t zset_max_ziplist_entries;
 613     size_t zset_max_ziplist_value;
 614     time_t unixtime;    /* Unix time sampled every second. */
 615     /* Pubsub */
 616     dict *pubsub_channels; /* Map channels to list of subscribed clients */
 617     list *pubsub_patterns; /* A list of pubsub_patterns */
 618     /* Misc */
 619     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
 620     unsigned lruclock_padding:10;
 621     /* Cluster */
 622     int cluster_enabled;
 623     clusterState cluster;
 624     /* Scripting */
 625     lua_State *lua; /* The Lua interpreter. We use just one for all clients */
 626     redisClient *lua_client; /* The "fake client" to query Redis from Lua */
 627     redisClient *lua_caller; /* The client running EVAL right now, or NULL */
 628     dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
 629     long long lua_time_limit;
 630     long long lua_time_start;
 631     int lua_write_dirty;  /* True if a write command was called during the
 632                              execution of the current script. */
 633     int lua_random_dirty; /* True if a random command was called during the
 634                              execution of the current script. */
 635     int lua_timedout;     /* True if we reached the time limit for script
 636                              execution. */
 637     int lua_kill;         /* Kill the script if true. */
 638     /* Assert & bug reportign */
 639     char *assert_failed;
 640     char *assert_file;
 641     int assert_line;
 642     int bug_report_start; /* True if bug report header already logged. */
 643 };
 644
 645 typedef struct pubsubPattern {
 646     redisClient *client;
 647     robj *pattern;
 648 } pubsubPattern;
 649
 650 typedef void redisCommandProc(redisClient *c);
 651 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 652 struct redisCommand {
 653     char *name;
 654     redisCommandProc *proc;
 655     int arity;
 656     char *sflags; /* Flags as string represenation, one char per flag. */
 657     int flags;    /* The actual flags, obtained from the 'sflags' field. */
 658     /* Use a function to determine keys arguments in a command line.
 659      * Used for Redis Cluster redirect. */
 660     redisGetKeysProc *getkeys_proc;
 661     /* What keys should be loaded in background when calling this command? */
 662     int firstkey; /* The first argument that's a key (0 = no keys) */
 663     int lastkey;  /* THe last argument that's a key */
 664     int keystep;  /* The step between first and last key */
 665     long long microseconds, calls;
 666 };
 667
 668 struct redisFunctionSym {
 669     char *name;
 670     unsigned long pointer;
 671 };
 672
 673 typedef struct _redisSortObject {
 674     robj *obj;
 675     union {
 676         double score;
 677         robj *cmpobj;
 678     } u;
 679 } redisSortObject;
 680
 681 typedef struct _redisSortOperation {
 682     int type;
 683     robj *pattern;
 684 } redisSortOperation;
 685
 686 /* Structure to hold list iteration abstraction. */
 687 typedef struct {
 688     robj *subject;
 689     unsigned char encoding;
 690     unsigned char direction; /* Iteration direction */
 691     unsigned char *zi;
 692     listNode *ln;
 693 } listTypeIterator;
 694
 695 /* Structure for an entry while iterating over a list. */
 696 typedef struct {
 697     listTypeIterator *li;
 698     unsigned char *zi;  /* Entry in ziplist */
 699     listNode *ln;       /* Entry in linked list */
 700 } listTypeEntry;
 701
 702 /* Structure to hold set iteration abstraction. */
 703 typedef struct {
 704     robj *subject;
 705     int encoding;
 706     int ii; /* intset iterator */
 707     dictIterator *di;
 708 } setTypeIterator;
 709
 710 /* Structure to hold hash iteration abstration. Note that iteration over
 711  * hashes involves both fields and values. Because it is possible that
 712  * not both are required, store pointers in the iterator to avoid
 713  * unnecessary memory allocation for fields/values. */
 714 typedef struct {
 715     int encoding;
 716     unsigned char *zi;
 717     unsigned char *zk, *zv;
 718     unsigned int zklen, zvlen;
 719
 720     dictIterator *di;
 721     dictEntry *de;
 722 } hashTypeIterator;
 723
 724 #define REDIS_HASH_KEY 1
 725 #define REDIS_HASH_VALUE 2
 726
 727 /*-----------------------------------------------------------------------------
 728  * Extern declarations
 729  *----------------------------------------------------------------------------*/
 730
 731 extern struct redisServer server;
 732 extern struct sharedObjectsStruct shared;
 733 extern dictType setDictType;
 734 extern dictType zsetDictType;
 735 extern dictType clusterNodesDictType;
 736 extern dictType dbDictType;
 737 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 738 dictType hashDictType;
 739
 740 /*-----------------------------------------------------------------------------
 741  * Functions prototypes
 742  *----------------------------------------------------------------------------*/
 743
 744 /* Utils */
 745 long long ustime(void);
 746 long long mstime(void);
 747
 748 /* networking.c -- Networking and Client related operations */
 749 redisClient *createClient(int fd);
 750 void closeTimedoutClients(void);
 751 void freeClient(redisClient *c);
 752 void resetClient(redisClient *c);
 753 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
 754 void addReply(redisClient *c, robj *obj);
 755 void *addDeferredMultiBulkLength(redisClient *c);
 756 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
 757 void addReplySds(redisClient *c, sds s);
 758 void processInputBuffer(redisClient *c);
 759 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 760 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 761 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 762 void addReplyBulk(redisClient *c, robj *obj);
 763 void addReplyBulkCString(redisClient *c, char *s);
 764 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
 765 void addReplyBulkLongLong(redisClient *c, long long ll);
 766 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 767 void addReply(redisClient *c, robj *obj);
 768 void addReplySds(redisClient *c, sds s);
 769 void addReplyError(redisClient *c, char *err);
 770 void addReplyStatus(redisClient *c, char *status);
 771 void addReplyDouble(redisClient *c, double d);
 772 void addReplyLongLong(redisClient *c, long long ll);
 773 void addReplyMultiBulkLen(redisClient *c, long length);
 774 void *dupClientReplyValue(void *o);
 775 void getClientsMaxBuffers(unsigned long *longest_output_list,
 776                           unsigned long *biggest_input_buffer);
 777 sds getClientInfoString(redisClient *client);
 778 sds getAllClientsInfoString(void);
 779 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 780 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
 781
 782 #ifdef __GNUC__
 783 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 784     __attribute__((format(printf, 2, 3)));
 785 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
 786     __attribute__((format(printf, 2, 3)));
 787 #else
 788 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
 789 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
 790 #endif
 791
 792 /* List data type */
 793 void listTypeTryConversion(robj *subject, robj *value);
 794 void listTypePush(robj *subject, robj *value, int where);
 795 robj *listTypePop(robj *subject, int where);
 796 unsigned long listTypeLength(robj *subject);
 797 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
 798 void listTypeReleaseIterator(listTypeIterator *li);
 799 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
 800 robj *listTypeGet(listTypeEntry *entry);
 801 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
 802 int listTypeEqual(listTypeEntry *entry, robj *o);
 803 void listTypeDelete(listTypeEntry *entry);
 804 void listTypeConvert(robj *subject, int enc);
 805 void unblockClientWaitingData(redisClient *c);
 806 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
 807 void popGenericCommand(redisClient *c, int where);
 808
 809 /* MULTI/EXEC/WATCH... */
 810 void unwatchAllKeys(redisClient *c);
 811 void initClientMultiState(redisClient *c);
 812 void freeClientMultiState(redisClient *c);
 813 void queueMultiCommand(redisClient *c);
 814 void touchWatchedKey(redisDb *db, robj *key);
 815 void touchWatchedKeysOnFlush(int dbid);
 816
 817 /* Redis object implementation */
 818 void decrRefCount(void *o);
 819 void incrRefCount(robj *o);
 820 robj *resetRefCount(robj *obj);
 821 void freeStringObject(robj *o);
 822 void freeListObject(robj *o);
 823 void freeSetObject(robj *o);
 824 void freeZsetObject(robj *o);
 825 void freeHashObject(robj *o);
 826 robj *createObject(int type, void *ptr);
 827 robj *createStringObject(char *ptr, size_t len);
 828 robj *dupStringObject(robj *o);
 829 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
 830 robj *tryObjectEncoding(robj *o);
 831 robj *getDecodedObject(robj *o);
 832 size_t stringObjectLen(robj *o);
 833 robj *createStringObjectFromLongLong(long long value);
 834 robj *createStringObjectFromLongDouble(long double value);
 835 robj *createListObject(void);
 836 robj *createZiplistObject(void);
 837 robj *createSetObject(void);
 838 robj *createIntsetObject(void);
 839 robj *createHashObject(void);
 840 robj *createZsetObject(void);
 841 robj *createZsetZiplistObject(void);
 842 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
 843 int checkType(redisClient *c, robj *o, int type);
 844 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 845 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 846 int getLongLongFromObject(robj *o, long long *target);
 847 int getLongDoubleFromObject(robj *o, long double *target);
 848 int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
 849 char *strEncoding(int encoding);
 850 int compareStringObjects(robj *a, robj *b);
 851 int equalStringObjects(robj *a, robj *b);
 852 unsigned long estimateObjectIdleTime(robj *o);
 853
 854 /* Synchronous I/O with timeout */
 855 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
 856 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
 857 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
 858
 859 /* Replication */
 860 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 861 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 862 void updateSlavesWaitingBgsave(int bgsaveerr);
 863 void replicationCron(void);
 864
 865 /* Generic persistence functions */
 866 void startLoading(FILE *fp);
 867 void loadingProgress(off_t pos);
 868 void stopLoading(void);
 869
 870 /* RDB persistence */
 871 #include "rdb.h"
 872
 873 /* AOF persistence */
 874 void flushAppendOnlyFile(int force);
 875 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
 876 void aofRemoveTempFile(pid_t childpid);
 877 int rewriteAppendOnlyFileBackground(void);
 878 int loadAppendOnlyFile(char *filename);
 879 void stopAppendOnly(void);
 880 int startAppendOnly(void);
 881 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
 882
 883 /* Sorted sets data type */
 884
 885 /* Struct to hold a inclusive/exclusive range spec. */
 886 typedef struct {
 887     double min, max;
 888     int minex, maxex; /* are min or max exclusive? */
 889 } zrangespec;
 890
 891 zskiplist *zslCreate(void);
 892 void zslFree(zskiplist *zsl);
 893 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 894 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
 895 int zslDelete(zskiplist *zsl, double score, robj *obj);
 896 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
 897 double zzlGetScore(unsigned char *sptr);
 898 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 899 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 900 unsigned int zsetLength(robj *zobj);
 901 void zsetConvert(robj *zobj, int encoding);
 902
 903 /* Core functions */
 904 void freeMemoryIfNeeded(void);
 905 int processCommand(redisClient *c);
 906 void setupSignalHandlers(void);
 907 struct redisCommand *lookupCommand(sds name);
 908 struct redisCommand *lookupCommandByCString(char *s);
 909 void call(redisClient *c);
 910 int prepareForShutdown();
 911 void redisLog(int level, const char *fmt, ...);
 912 void redisLogRaw(int level, const char *msg);
 913 void usage();
 914 void updateDictResizePolicy(void);
 915 int htNeedsResize(dict *dict);
 916 void oom(const char *msg);
 917 void populateCommandTable(void);
 918 void resetCommandTableStats(void);
 919
 920 /* Set data type */
 921 robj *setTypeCreate(robj *value);
 922 int setTypeAdd(robj *subject, robj *value);
 923 int setTypeRemove(robj *subject, robj *value);
 924 int setTypeIsMember(robj *subject, robj *value);
 925 setTypeIterator *setTypeInitIterator(robj *subject);
 926 void setTypeReleaseIterator(setTypeIterator *si);
 927 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
 928 robj *setTypeNextObject(setTypeIterator *si);
 929 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
 930 unsigned long setTypeSize(robj *subject);
 931 void setTypeConvert(robj *subject, int enc);
 932
 933 /* Hash data type */
 934 void convertToRealHash(robj *o);
 935 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 936 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 937 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
 938 robj *hashTypeGetObject(robj *o, robj *key);
 939 int hashTypeExists(robj *o, robj *key);
 940 int hashTypeSet(robj *o, robj *key, robj *value);
 941 int hashTypeDelete(robj *o, robj *key);
 942 unsigned long hashTypeLength(robj *o);
 943 hashTypeIterator *hashTypeInitIterator(robj *subject);
 944 void hashTypeReleaseIterator(hashTypeIterator *hi);
 945 int hashTypeNext(hashTypeIterator *hi);
 946 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
 947 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 948 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 949
 950 /* Pub / Sub */
 951 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 952 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 953 void freePubsubPattern(void *p);
 954 int listMatchPubsubPattern(void *a, void *b);
 955 int pubsubPublishMessage(robj *channel, robj *message);
 956
 957 /* Configuration */
 958 void loadServerConfig(char *filename, char *options);
 959 void appendServerSaveParams(time_t seconds, int changes);
 960 void resetServerSaveParams();
 961
 962 /* db.c -- Keyspace access API */
 963 int removeExpire(redisDb *db, robj *key);
 964 void propagateExpire(redisDb *db, robj *key);
 965 int expireIfNeeded(redisDb *db, robj *key);
 966 long long getExpire(redisDb *db, robj *key);
 967 void setExpire(redisDb *db, robj *key, long long when);
 968 robj *lookupKey(redisDb *db, robj *key);
 969 robj *lookupKeyRead(redisDb *db, robj *key);
 970 robj *lookupKeyWrite(redisDb *db, robj *key);
 971 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
 972 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
 973 void dbAdd(redisDb *db, robj *key, robj *val);
 974 void dbOverwrite(redisDb *db, robj *key, robj *val);
 975 void setKey(redisDb *db, robj *key, robj *val);
 976 int dbExists(redisDb *db, robj *key);
 977 robj *dbRandomKey(redisDb *db);
 978 int dbDelete(redisDb *db, robj *key);
 979 long long emptyDb();
 980 int selectDb(redisClient *c, int id);
 981 void signalModifiedKey(redisDb *db, robj *key);
 982 void signalFlushedDb(int dbid);
 983 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
 984
 985 /* API to get key arguments from commands */
 986 #define REDIS_GETKEYS_ALL 0
 987 #define REDIS_GETKEYS_PRELOAD 1
 988 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 989 void getKeysFreeResult(int *result);
 990 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 991 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 992 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 993
 994 /* Cluster */
 995 void clusterInit(void);
 996 unsigned short crc16(const char *buf, int len);
 997 unsigned int keyHashSlot(char *key, int keylen);
 998 clusterNode *createClusterNode(char *nodename, int flags);
 999 int clusterAddNode(clusterNode *node);
1000 void clusterCron(void);
1001 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
1002 void clusterPropagatePublish(robj *channel, robj *message);
1003
1004 /* Scripting */
1005 void scriptingInit(void);
1006
1007 /* Git SHA1 */
1008 char *redisGitSHA1(void);
1009 char *redisGitDirty(void);
1010
1011 /* Commands prototypes */
1012 void authCommand(redisClient *c);
1013 void pingCommand(redisClient *c);
1014 void echoCommand(redisClient *c);
1015 void setCommand(redisClient *c);
1016 void setnxCommand(redisClient *c);
1017 void setexCommand(redisClient *c);
1018 void psetexCommand(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 incrbyfloatCommand(redisClient *c);
1031 void selectCommand(redisClient *c);
1032 void randomkeyCommand(redisClient *c);
1033 void keysCommand(redisClient *c);
1034 void dbsizeCommand(redisClient *c);
1035 void lastsaveCommand(redisClient *c);
1036 void saveCommand(redisClient *c);
1037 void bgsaveCommand(redisClient *c);
1038 void bgrewriteaofCommand(redisClient *c);
1039 void shutdownCommand(redisClient *c);
1040 void moveCommand(redisClient *c);
1041 void renameCommand(redisClient *c);
1042 void renamenxCommand(redisClient *c);
1043 void lpushCommand(redisClient *c);
1044 void rpushCommand(redisClient *c);
1045 void lpushxCommand(redisClient *c);
1046 void rpushxCommand(redisClient *c);
1047 void linsertCommand(redisClient *c);
1048 void lpopCommand(redisClient *c);
1049 void rpopCommand(redisClient *c);
1050 void llenCommand(redisClient *c);
1051 void lindexCommand(redisClient *c);
1052 void lrangeCommand(redisClient *c);
1053 void ltrimCommand(redisClient *c);
1054 void typeCommand(redisClient *c);
1055 void lsetCommand(redisClient *c);
1056 void saddCommand(redisClient *c);
1057 void sremCommand(redisClient *c);
1058 void smoveCommand(redisClient *c);
1059 void sismemberCommand(redisClient *c);
1060 void scardCommand(redisClient *c);
1061 void spopCommand(redisClient *c);
1062 void srandmemberCommand(redisClient *c);
1063 void sinterCommand(redisClient *c);
1064 void sinterstoreCommand(redisClient *c);
1065 void sunionCommand(redisClient *c);
1066 void sunionstoreCommand(redisClient *c);
1067 void sdiffCommand(redisClient *c);
1068 void sdiffstoreCommand(redisClient *c);
1069 void syncCommand(redisClient *c);
1070 void flushdbCommand(redisClient *c);
1071 void flushallCommand(redisClient *c);
1072 void sortCommand(redisClient *c);
1073 void lremCommand(redisClient *c);
1074 void rpoplpushCommand(redisClient *c);
1075 void infoCommand(redisClient *c);
1076 void mgetCommand(redisClient *c);
1077 void monitorCommand(redisClient *c);
1078 void expireCommand(redisClient *c);
1079 void expireatCommand(redisClient *c);
1080 void pexpireCommand(redisClient *c);
1081 void pexpireatCommand(redisClient *c);
1082 void getsetCommand(redisClient *c);
1083 void ttlCommand(redisClient *c);
1084 void pttlCommand(redisClient *c);
1085 void persistCommand(redisClient *c);
1086 void slaveofCommand(redisClient *c);
1087 void debugCommand(redisClient *c);
1088 void msetCommand(redisClient *c);
1089 void msetnxCommand(redisClient *c);
1090 void zaddCommand(redisClient *c);
1091 void zincrbyCommand(redisClient *c);
1092 void zrangeCommand(redisClient *c);
1093 void zrangebyscoreCommand(redisClient *c);
1094 void zrevrangebyscoreCommand(redisClient *c);
1095 void zcountCommand(redisClient *c);
1096 void zrevrangeCommand(redisClient *c);
1097 void zcardCommand(redisClient *c);
1098 void zremCommand(redisClient *c);
1099 void zscoreCommand(redisClient *c);
1100 void zremrangebyscoreCommand(redisClient *c);
1101 void multiCommand(redisClient *c);
1102 void execCommand(redisClient *c);
1103 void discardCommand(redisClient *c);
1104 void blpopCommand(redisClient *c);
1105 void brpopCommand(redisClient *c);
1106 void brpoplpushCommand(redisClient *c);
1107 void appendCommand(redisClient *c);
1108 void strlenCommand(redisClient *c);
1109 void zrankCommand(redisClient *c);
1110 void zrevrankCommand(redisClient *c);
1111 void hsetCommand(redisClient *c);
1112 void hsetnxCommand(redisClient *c);
1113 void hgetCommand(redisClient *c);
1114 void hmsetCommand(redisClient *c);
1115 void hmgetCommand(redisClient *c);
1116 void hdelCommand(redisClient *c);
1117 void hlenCommand(redisClient *c);
1118 void zremrangebyrankCommand(redisClient *c);
1119 void zunionstoreCommand(redisClient *c);
1120 void zinterstoreCommand(redisClient *c);
1121 void hkeysCommand(redisClient *c);
1122 void hvalsCommand(redisClient *c);
1123 void hgetallCommand(redisClient *c);
1124 void hexistsCommand(redisClient *c);
1125 void configCommand(redisClient *c);
1126 void hincrbyCommand(redisClient *c);
1127 void hincrbyfloatCommand(redisClient *c);
1128 void subscribeCommand(redisClient *c);
1129 void unsubscribeCommand(redisClient *c);
1130 void psubscribeCommand(redisClient *c);
1131 void punsubscribeCommand(redisClient *c);
1132 void publishCommand(redisClient *c);
1133 void watchCommand(redisClient *c);
1134 void unwatchCommand(redisClient *c);
1135 void clusterCommand(redisClient *c);
1136 void restoreCommand(redisClient *c);
1137 void migrateCommand(redisClient *c);
1138 void askingCommand(redisClient *c);
1139 void dumpCommand(redisClient *c);
1140 void objectCommand(redisClient *c);
1141 void clientCommand(redisClient *c);
1142 void evalCommand(redisClient *c);
1143 void evalShaCommand(redisClient *c);
1144 void scriptCommand(redisClient *c);
1145
1146 #if defined(__GNUC__)
1147 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1148 void free(void *ptr) __attribute__ ((deprecated));
1149 void *malloc(size_t size) __attribute__ ((deprecated));
1150 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1151 #endif
1152
1153 /* Debugging stuff */
1154 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1155 void _redisAssert(char *estr, char *file, int line);
1156 void _redisPanic(char *msg, char *file, int line);
1157 void bugReportStart(void);
1158
1159 #endif