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
  59 /* Hash table parameters */
  60 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
  61
  62 /* Command flags. Please check the command table defined in the redis.c file
  63  * for more information about the meaning of every flag. */
  64 #define REDIS_CMD_WRITE 1                   /* "w" flag */
  65 #define REDIS_CMD_READONLY 2                /* "r" flag */
  66 #define REDIS_CMD_DENYOOM 4                 /* "m" flag */
  67 #define REDIS_CMD_FORCE_REPLICATION 8       /* "f" flag */
  68 #define REDIS_CMD_ADMIN 16                  /* "a" flag */
  69 #define REDIS_CMD_PUBSUB 32                 /* "p" flag */
  70 #define REDIS_CMD_NOSCRIPT  64              /* "s" flag */
  71 #define REDIS_CMD_RANDOM 128                /* "R" flag */
  72
  73 /* Object types */
  74 #define REDIS_STRING 0
  75 #define REDIS_LIST 1
  76 #define REDIS_SET 2
  77 #define REDIS_ZSET 3
  78 #define REDIS_HASH 4
  79 #define REDIS_VMPOINTER 8
  80
  81 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  82  * internally represented in multiple ways. The 'encoding' field of the object
  83  * is set to one of this fields for this object. */
  84 #define REDIS_ENCODING_RAW 0     /* Raw representation */
  85 #define REDIS_ENCODING_INT 1     /* Encoded as integer */
  86 #define REDIS_ENCODING_HT 2      /* Encoded as hash table */
  87 #define REDIS_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
  88 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
  89 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
  90 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
  91 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
  92
  93 /* Object types only used for dumping to disk */
  94 #define REDIS_EXPIRETIME 253
  95 #define REDIS_SELECTDB 254
  96 #define REDIS_EOF 255
  97
  98 /* Defines related to the dump file format. To store 32 bits lengths for short
  99  * keys requires a lot of space, so we check the most significant 2 bits of
 100  * the first byte to interpreter the length:
 101  *
 102  * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
 103  * 01|000000 00000000 =>  01, the len is 14 byes, 6 bits + 8 bits of next byte
 104  * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
 105  * 11|000000 this means: specially encoded object will follow. The six bits
 106  *           number specify the kind of object that follows.
 107  *           See the REDIS_RDB_ENC_* defines.
 108  *
 109  * Lenghts up to 63 are stored using a single byte, most DB keys, and may
 110  * values, will fit inside. */
 111 #define REDIS_RDB_6BITLEN 0
 112 #define REDIS_RDB_14BITLEN 1
 113 #define REDIS_RDB_32BITLEN 2
 114 #define REDIS_RDB_ENCVAL 3
 115 #define REDIS_RDB_LENERR UINT_MAX
 116
 117 /* When a length of a string object stored on disk has the first two bits
 118  * set, the remaining two bits specify a special encoding for the object
 119  * accordingly to the following defines: */
 120 #define REDIS_RDB_ENC_INT8 0        /* 8 bit signed integer */
 121 #define REDIS_RDB_ENC_INT16 1       /* 16 bit signed integer */
 122 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 123 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 124
 125 /* Client flags */
 126 #define REDIS_SLAVE 1       /* This client is a slave server */
 127 #define REDIS_MASTER 2      /* This client is a master server */
 128 #define REDIS_MONITOR 4     /* This client is a slave monitor, see MONITOR */
 129 #define REDIS_MULTI 8       /* This client is in a MULTI context */
 130 #define REDIS_BLOCKED 16    /* The client is waiting in a blocking operation */
 131 #define REDIS_DIRTY_CAS 64  /* Watched keys modified. EXEC will fail. */
 132 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
 133 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
 134                                server.unblocked_clients */
 135 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
 136
 137 /* Client request types */
 138 #define REDIS_REQ_INLINE 1
 139 #define REDIS_REQ_MULTIBULK 2
 140
 141 /* Slave replication state - slave side */
 142 #define REDIS_REPL_NONE 0 /* No active replication */
 143 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
 144 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
 145 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
 146 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
 147
 148 /* Synchronous read timeout - slave side */
 149 #define REDIS_REPL_SYNCIO_TIMEOUT 5
 150
 151 /* Slave replication state - from the point of view of master
 152  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 153  * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
 154  * to start the next background saving in order to send updates to it. */
 155 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
 156 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
 157 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
 158 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
 159
 160 /* List related stuff */
 161 #define REDIS_HEAD 0
 162 #define REDIS_TAIL 1
 163
 164 /* Sort operations */
 165 #define REDIS_SORT_GET 0
 166 #define REDIS_SORT_ASC 1
 167 #define REDIS_SORT_DESC 2
 168 #define REDIS_SORTKEY_MAX 1024
 169
 170 /* Log levels */
 171 #define REDIS_DEBUG 0
 172 #define REDIS_VERBOSE 1
 173 #define REDIS_NOTICE 2
 174 #define REDIS_WARNING 3
 175 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
 176
 177 /* Anti-warning macro... */
 178 #define REDIS_NOTUSED(V) ((void) V)
 179
 180 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
 181 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 182
 183 /* Append only defines */
 184 #define APPENDFSYNC_NO 0
 185 #define APPENDFSYNC_ALWAYS 1
 186 #define APPENDFSYNC_EVERYSEC 2
 187
 188 /* Zip structure related defaults */
 189 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 190 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 191 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 192 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 193 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 194 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
 195 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
 196
 197 /* Sets operations codes */
 198 #define REDIS_OP_UNION 0
 199 #define REDIS_OP_DIFF 1
 200 #define REDIS_OP_INTER 2
 201
 202 /* Redis maxmemory strategies */
 203 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
 204 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
 205 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 206 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 207 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 208 #define REDIS_MAXMEMORY_NO_EVICTION 5
 209
 210 /* Scripting */
 211 #define REDIS_LUA_TIME_LIMIT 60000 /* milliseconds */
 212
 213 /* We can print the stacktrace, so our assert is defined this way: */
 214 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
 215 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 216 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 217
 218 /*-----------------------------------------------------------------------------
 219  * Data types
 220  *----------------------------------------------------------------------------*/
 221
 222 /* A redis object, that is a type able to hold a string / list / set */
 223
 224 /* The actual Redis Object */
 225 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
 226 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
 227 typedef struct redisObject {
 228     unsigned type:4;
 229     unsigned notused:2;     /* Not used */
 230     unsigned encoding:4;
 231     unsigned lru:22;        /* lru time (relative to server.lruclock) */
 232     int refcount;
 233     void *ptr;
 234     /* VM fields are only allocated if VM is active, otherwise the
 235      * object allocation function will just allocate
 236      * sizeof(redisObjct) minus sizeof(redisObjectVM), so using
 237      * Redis without VM active will not have any overhead. */
 238 } robj;
 239
 240 /* The VM pointer structure - identifies an object in the swap file.
 241  *
 242  * This object is stored in place of the value
 243  * object in the main key->value hash table representing a database.
 244  * Note that the first fields (type, storage) are the same as the redisObject
 245  * structure so that vmPointer strucuters can be accessed even when casted
 246  * as redisObject structures.
 247  *
 248  * This is useful as we don't know if a value object is or not on disk, but we
 249  * are always able to read obj->storage to check this. For vmPointer
 250  * structures "type" is set to REDIS_VMPOINTER (even if without this field
 251  * is still possible to check the kind of object from the value of 'storage').*/
 252 typedef struct vmPointer {
 253     unsigned type:4;
 254     unsigned storage:2; /* REDIS_VM_SWAPPED or REDIS_VM_LOADING */
 255     unsigned notused:26;
 256     unsigned int vtype; /* type of the object stored in the swap file */
 257     off_t page;         /* the page at witch the object is stored on disk */
 258     off_t usedpages;    /* number of pages used on disk */
 259 } vmpointer;
 260
 261 /* Macro used to initalize a Redis object allocated on the stack.
 262  * Note that this macro is taken near the structure definition to make sure
 263  * we'll update it when the structure is changed, to avoid bugs like
 264  * bug #85 introduced exactly in this way. */
 265 #define initStaticStringObject(_var,_ptr) do { \
 266     _var.refcount = 1; \
 267     _var.type = REDIS_STRING; \
 268     _var.encoding = REDIS_ENCODING_RAW; \
 269     _var.ptr = _ptr; \
 270 } while(0);
 271
 272 typedef struct redisDb {
 273     dict *dict;                 /* The keyspace for this DB */
 274     dict *expires;              /* Timeout of keys with a timeout set */
 275     dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */
 276     dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */
 277     int id;
 278 } redisDb;
 279
 280 /* Client MULTI/EXEC state */
 281 typedef struct multiCmd {
 282     robj **argv;
 283     int argc;
 284     struct redisCommand *cmd;
 285 } multiCmd;
 286
 287 typedef struct multiState {
 288     multiCmd *commands;     /* Array of MULTI commands */
 289     int count;              /* Total number of MULTI commands */
 290 } multiState;
 291
 292 typedef struct blockingState {
 293     robj **keys;            /* The key we are waiting to terminate a blocking
 294                              * operation such as BLPOP. Otherwise NULL. */
 295     int count;              /* Number of blocking keys */
 296     time_t timeout;         /* Blocking operation timeout. If UNIX current time
 297                              * is >= timeout then the operation timed out. */
 298     robj *target;           /* The key that should receive the element,
 299                              * for BRPOPLPUSH. */
 300 } blockingState;
 301
 302 /* With multiplexing we need to take per-clinet state.
 303  * Clients are taken in a liked list. */
 304 typedef struct redisClient {
 305     int fd;
 306     redisDb *db;
 307     int dictid;
 308     sds querybuf;
 309     int argc;
 310     robj **argv;
 311     struct redisCommand *cmd;
 312     int reqtype;
 313     int multibulklen;       /* number of multi bulk arguments left to read */
 314     long bulklen;           /* length of bulk argument in multi bulk request */
 315     list *reply;
 316     int sentlen;
 317     time_t lastinteraction; /* time of the last interaction, used for timeout */
 318     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
 319     int slaveseldb;         /* slave selected db, if this client is a slave */
 320     int authenticated;      /* when requirepass is non-NULL */
 321     int replstate;          /* replication state if this is a slave */
 322     int repldbfd;           /* replication DB file descriptor */
 323     long repldboff;         /* replication DB file offset */
 324     off_t repldbsize;       /* replication DB file size */
 325     multiState mstate;      /* MULTI/EXEC state */
 326     blockingState bpop;   /* blocking state */
 327     list *io_keys;          /* Keys this client is waiting to be loaded from the
 328                              * swap file in order to continue. */
 329     list *watched_keys;     /* Keys WATCHED for MULTI/EXEC CAS */
 330     dict *pubsub_channels;  /* channels a client is interested in (SUBSCRIBE) */
 331     list *pubsub_patterns;  /* patterns a client is interested in (SUBSCRIBE) */
 332
 333     /* Response buffer */
 334     int bufpos;
 335     char buf[REDIS_REPLY_CHUNK_BYTES];
 336 } redisClient;
 337
 338 struct saveparam {
 339     time_t seconds;
 340     int changes;
 341 };
 342
 343 struct sharedObjectsStruct {
 344     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
 345     *colon, *nullbulk, *nullmultibulk, *queued,
 346     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
 347     *outofrangeerr, *noscripterr, *loadingerr, *plus,
 348     *select0, *select1, *select2, *select3, *select4,
 349     *select5, *select6, *select7, *select8, *select9,
 350     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
 351     *mbulk4, *psubscribebulk, *punsubscribebulk,
 352     *integers[REDIS_SHARED_INTEGERS];
 353 };
 354
 355 /* ZSETs use a specialized version of Skiplists */
 356 typedef struct zskiplistNode {
 357     robj *obj;
 358     double score;
 359     struct zskiplistNode *backward;
 360     struct zskiplistLevel {
 361         struct zskiplistNode *forward;
 362         unsigned int span;
 363     } level[];
 364 } zskiplistNode;
 365
 366 typedef struct zskiplist {
 367     struct zskiplistNode *header, *tail;
 368     unsigned long length;
 369     int level;
 370 } zskiplist;
 371
 372 typedef struct zset {
 373     dict *dict;
 374     zskiplist *zsl;
 375 } zset;
 376
 377 /*-----------------------------------------------------------------------------
 378  * Redis cluster data structures
 379  *----------------------------------------------------------------------------*/
 380
 381 #define REDIS_CLUSTER_SLOTS 4096
 382 #define REDIS_CLUSTER_OK 0          /* Everything looks ok */
 383 #define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
 384 #define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */
 385 #define REDIS_CLUSTER_NAMELEN 40    /* sha1 hex length */
 386 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
 387
 388 struct clusterNode;
 389
 390 /* clusterLink encapsulates everything needed to talk with a remote node. */
 391 typedef struct clusterLink {
 392     int fd;                     /* TCP socket file descriptor */
 393     sds sndbuf;                 /* Packet send buffer */
 394     sds rcvbuf;                 /* Packet reception buffer */
 395     struct clusterNode *node;   /* Node related to this link if any, or NULL */
 396 } clusterLink;
 397
 398 /* Node flags */
 399 #define REDIS_NODE_MASTER 1     /* The node is a master */
 400 #define REDIS_NODE_SLAVE 2      /* The node is a slave */
 401 #define REDIS_NODE_PFAIL 4      /* Failure? Need acknowledge */
 402 #define REDIS_NODE_FAIL 8       /* The node is believed to be malfunctioning */
 403 #define REDIS_NODE_MYSELF 16    /* This node is myself */
 404 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
 405 #define REDIS_NODE_NOADDR   64  /* We don't know the address of this node */
 406 #define REDIS_NODE_MEET 128     /* Send a MEET message to this node */
 407 #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"
 408
 409 struct clusterNode {
 410     char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
 411     int flags;      /* REDIS_NODE_... */
 412     unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
 413     int numslaves;  /* Number of slave nodes, if this is a master */
 414     struct clusterNode **slaves; /* pointers to slave nodes */
 415     struct clusterNode *slaveof; /* pointer to the master node */
 416     time_t ping_sent;       /* Unix time we sent latest ping */
 417     time_t pong_received;   /* Unix time we received the pong */
 418     char *configdigest;         /* Configuration digest of this node */
 419     time_t configdigest_ts;     /* Configuration digest timestamp */
 420     char ip[16];                /* Latest known IP address of this node */
 421     int port;                   /* Latest known port of this node */
 422     clusterLink *link;          /* TCP/IP link with this node */
 423 };
 424 typedef struct clusterNode clusterNode;
 425
 426 typedef struct {
 427     char *configfile;
 428     clusterNode *myself;  /* This node */
 429     int state;            /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
 430     int node_timeout;
 431     dict *nodes;          /* Hash table of name -> clusterNode structures */
 432     clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
 433     clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
 434     clusterNode *slots[REDIS_CLUSTER_SLOTS];
 435     zskiplist *slots_to_keys;
 436 } clusterState;
 437
 438 /* Redis cluster messages header */
 439
 440 /* Note that the PING, PONG and MEET messages are actually the same exact
 441  * kind of packet. PONG is the reply to ping, in the extact format as a PING,
 442  * while MEET is a special PING that forces the receiver to add the sender
 443  * as a node (if it is not already in the list). */
 444 #define CLUSTERMSG_TYPE_PING 0          /* Ping */
 445 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 446 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 447 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */
 448 #define CLUSTERMSG_TYPE_PUBLISH 4       /* Pub/Sub Publish propatagion */
 449
 450 /* Initially we don't know our "name", but we'll find it once we connect
 451  * to the first node, using the getsockname() function. Then we'll use this
 452  * address for all the next messages. */
 453 typedef struct {
 454     char nodename[REDIS_CLUSTER_NAMELEN];
 455     uint32_t ping_sent;
 456     uint32_t pong_received;
 457     char ip[16];    /* IP address last time it was seen */
 458     uint16_t port;  /* port last time it was seen */
 459     uint16_t flags;
 460     uint32_t notused; /* for 64 bit alignment */
 461 } clusterMsgDataGossip;
 462
 463 typedef struct {
 464     char nodename[REDIS_CLUSTER_NAMELEN];
 465 } clusterMsgDataFail;
 466
 467 typedef struct {
 468     uint32_t channel_len;
 469     uint32_t message_len;
 470     unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
 471 } clusterMsgDataPublish;
 472
 473 union clusterMsgData {
 474     /* PING, MEET and PONG */
 475     struct {
 476         /* Array of N clusterMsgDataGossip structures */
 477         clusterMsgDataGossip gossip[1];
 478     } ping;
 479
 480     /* FAIL */
 481     struct {
 482         clusterMsgDataFail about;
 483     } fail;
 484
 485     /* PUBLISH */
 486     struct {
 487         clusterMsgDataPublish msg;
 488     } publish;
 489 };
 490
 491 typedef struct {
 492     uint32_t totlen;    /* Total length of this message */
 493     uint16_t type;      /* Message type */
 494     uint16_t count;     /* Only used for some kind of messages. */
 495     char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
 496     unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
 497     char slaveof[REDIS_CLUSTER_NAMELEN];
 498     char configdigest[32];
 499     uint16_t port;      /* Sender TCP base port */
 500     unsigned char state; /* Cluster state from the POV of the sender */
 501     unsigned char notused[5]; /* Reserved for future use. For alignment. */
 502     union clusterMsgData data;
 503 } clusterMsg;
 504
 505 /*-----------------------------------------------------------------------------
 506  * Global server state
 507  *----------------------------------------------------------------------------*/
 508
 509 struct redisServer {
 510     /* General */
 511     redisDb *db;
 512     dict *commands;             /* Command table hahs table */
 513     aeEventLoop *el;
 514     /* Networking */
 515     int port;
 516     char *bindaddr;
 517     char *unixsocket;
 518     mode_t unixsocketperm;
 519     int ipfd;
 520     int sofd;
 521     int cfd;
 522     list *clients;
 523     list *slaves, *monitors;
 524     char neterr[ANET_ERR_LEN];
 525     /* RDB / AOF loading information */
 526     int loading;
 527     off_t loading_total_bytes;
 528     off_t loading_loaded_bytes;
 529     time_t loading_start_time;
 530     /* Fast pointers to often looked up command */
 531     struct redisCommand *delCommand, *multiCommand;
 532     int cronloops;              /* number of times the cron function run */
 533     time_t lastsave;                /* Unix time of last save succeeede */
 534     /* Fields used only for stats */
 535     time_t stat_starttime;          /* server start time */
 536     long long stat_numcommands;     /* number of processed commands */
 537     long long stat_numconnections;  /* number of connections received */
 538     long long stat_expiredkeys;     /* number of expired keys */
 539     long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
 540     long long stat_keyspace_hits;   /* number of successful lookups of keys */
 541     long long stat_keyspace_misses; /* number of failed lookups of keys */
 542     size_t stat_peak_memory;        /* max used memory record */
 543     long long stat_fork_time;       /* time needed to perform latets fork() */
 544     list *slowlog;
 545     long long slowlog_entry_id;
 546     long long slowlog_log_slower_than;
 547     unsigned long slowlog_max_len;
 548     /* Configuration */
 549     int verbosity;
 550     int maxidletime;
 551     int dbnum;
 552     int daemonize;
 553     int appendonly;
 554     int appendfsync;
 555     int no_appendfsync_on_rewrite;
 556     int auto_aofrewrite_perc;       /* Rewrite AOF if % growth is > M and... */
 557     off_t auto_aofrewrite_min_size; /* the AOF file is at least N bytes. */
 558     off_t auto_aofrewrite_base_size;/* AOF size on latest startup or rewrite. */
 559     off_t appendonly_current_size;  /* AOF current size. */
 560     int aofrewrite_scheduled;       /* Rewrite once BGSAVE terminates. */
 561     int shutdown_asap;
 562     int activerehashing;
 563     char *requirepass;
 564     /* Persistence */
 565     long long dirty;            /* changes to DB from the last save */
 566     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
 567     time_t lastfsync;
 568     int appendfd;
 569     int appendseldb;
 570     time_t aof_flush_postponed_start;
 571     char *pidfile;
 572     pid_t bgsavechildpid;
 573     pid_t bgrewritechildpid;
 574     sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
 575     sds aofbuf;       /* AOF buffer, written before entering the event loop */
 576     struct saveparam *saveparams;
 577     int saveparamslen;
 578     char *dbfilename;
 579     int rdbcompression;
 580     char *appendfilename;
 581     /* Logging */
 582     char *logfile;
 583     int syslog_enabled;
 584     char *syslog_ident;
 585     int syslog_facility;
 586     /* Replication related */
 587     int isslave;
 588     /* Slave specific fields */
 589     char *masterauth;
 590     char *masterhost;
 591     int masterport;
 592     redisClient *master;    /* client that is master for this slave */
 593     int repl_syncio_timeout; /* timeout for synchronous I/O calls */
 594     int replstate;          /* replication status if the instance is a slave */
 595     off_t repl_transfer_left;  /* bytes left reading .rdb  */
 596     int repl_transfer_s;    /* slave -> master SYNC socket */
 597     int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
 598     char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
 599     time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
 600     int repl_serve_stale_data; /* Serve stale data when link is down? */
 601     time_t repl_down_since; /* unix time at which link with master went down */
 602     /* Limits */
 603     unsigned int maxclients;
 604     unsigned long long maxmemory;
 605     int maxmemory_policy;
 606     int maxmemory_samples;
 607     /* Blocked clients */
 608     unsigned int bpop_blocked_clients;
 609     list *unblocked_clients; /* list of clients to unblock before next loop */
 610     /* Sort parameters - qsort_r() is only available under BSD so we
 611      * have to take this state global, in order to pass it to sortCompare() */
 612     int sort_desc;
 613     int sort_alpha;
 614     int sort_bypattern;
 615     /* Zip structure config */
 616     size_t hash_max_zipmap_entries;
 617     size_t hash_max_zipmap_value;
 618     size_t list_max_ziplist_entries;
 619     size_t list_max_ziplist_value;
 620     size_t set_max_intset_entries;
 621     size_t zset_max_ziplist_entries;
 622     size_t zset_max_ziplist_value;
 623     time_t unixtime;    /* Unix time sampled every second. */
 624     /* Pubsub */
 625     dict *pubsub_channels; /* Map channels to list of subscribed clients */
 626     list *pubsub_patterns; /* A list of pubsub_patterns */
 627     /* Misc */
 628     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
 629     unsigned lruclock_padding:10;
 630     /* Cluster */
 631     int cluster_enabled;
 632     clusterState cluster;
 633     /* Scripting */
 634     lua_State *lua; /* The Lua interpreter. We use just one for all clients */
 635     redisClient *lua_client; /* The "fake client" to query Redis from Lua */
 636     dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
 637     long long lua_time_limit;
 638     long long lua_time_start;
 639     int lua_random_dirty; /* True if a random command was called during the
 640                              exection of the current script. */
 641 };
 642
 643 typedef struct pubsubPattern {
 644     redisClient *client;
 645     robj *pattern;
 646 } pubsubPattern;
 647
 648 typedef void redisCommandProc(redisClient *c);
 649 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 650 struct redisCommand {
 651     char *name;
 652     redisCommandProc *proc;
 653     int arity;
 654     char *sflags; /* Flags as string represenation, one char per flag. */
 655     int flags;    /* The actual flags, obtained from the 'sflags' field. */
 656     /* Use a function to determine keys arguments in a command line.
 657      * Used for Redis Cluster redirect. */
 658     redisGetKeysProc *getkeys_proc;
 659     /* What keys should be loaded in background when calling this command? */
 660     int firstkey; /* The first argument that's a key (0 = no keys) */
 661     int lastkey;  /* THe last argument that's a key */
 662     int keystep;  /* The step between first and last key */
 663     long long microseconds, calls;
 664 };
 665
 666 struct redisFunctionSym {
 667     char *name;
 668     unsigned long pointer;
 669 };
 670
 671 typedef struct _redisSortObject {
 672     robj *obj;
 673     union {
 674         double score;
 675         robj *cmpobj;
 676     } u;
 677 } redisSortObject;
 678
 679 typedef struct _redisSortOperation {
 680     int type;
 681     robj *pattern;
 682 } redisSortOperation;
 683
 684 /* Structure to hold list iteration abstraction. */
 685 typedef struct {
 686     robj *subject;
 687     unsigned char encoding;
 688     unsigned char direction; /* Iteration direction */
 689     unsigned char *zi;
 690     listNode *ln;
 691 } listTypeIterator;
 692
 693 /* Structure for an entry while iterating over a list. */
 694 typedef struct {
 695     listTypeIterator *li;
 696     unsigned char *zi;  /* Entry in ziplist */
 697     listNode *ln;       /* Entry in linked list */
 698 } listTypeEntry;
 699
 700 /* Structure to hold set iteration abstraction. */
 701 typedef struct {
 702     robj *subject;
 703     int encoding;
 704     int ii; /* intset iterator */
 705     dictIterator *di;
 706 } setTypeIterator;
 707
 708 /* Structure to hold hash iteration abstration. Note that iteration over
 709  * hashes involves both fields and values. Because it is possible that
 710  * not both are required, store pointers in the iterator to avoid
 711  * unnecessary memory allocation for fields/values. */
 712 typedef struct {
 713     int encoding;
 714     unsigned char *zi;
 715     unsigned char *zk, *zv;
 716     unsigned int zklen, zvlen;
 717
 718     dictIterator *di;
 719     dictEntry *de;
 720 } hashTypeIterator;
 721
 722 #define REDIS_HASH_KEY 1
 723 #define REDIS_HASH_VALUE 2
 724
 725 /*-----------------------------------------------------------------------------
 726  * Extern declarations
 727  *----------------------------------------------------------------------------*/
 728
 729 extern struct redisServer server;
 730 extern struct sharedObjectsStruct shared;
 731 extern dictType setDictType;
 732 extern dictType zsetDictType;
 733 extern dictType clusterNodesDictType;
 734 extern dictType dbDictType;
 735 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 736 dictType hashDictType;
 737
 738 /*-----------------------------------------------------------------------------
 739  * Functions prototypes
 740  *----------------------------------------------------------------------------*/
 741
 742 /* Utils */
 743 long long ustime(void);
 744
 745 /* networking.c -- Networking and Client related operations */
 746 redisClient *createClient(int fd);
 747 void closeTimedoutClients(void);
 748 void freeClient(redisClient *c);
 749 void resetClient(redisClient *c);
 750 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
 751 void addReply(redisClient *c, robj *obj);
 752 void *addDeferredMultiBulkLength(redisClient *c);
 753 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
 754 void addReplySds(redisClient *c, sds s);
 755 void processInputBuffer(redisClient *c);
 756 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 757 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 758 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 759 void addReplyBulk(redisClient *c, robj *obj);
 760 void addReplyBulkCString(redisClient *c, char *s);
 761 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
 762 void addReplyBulkLongLong(redisClient *c, long long ll);
 763 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 764 void addReply(redisClient *c, robj *obj);
 765 void addReplySds(redisClient *c, sds s);
 766 void addReplyError(redisClient *c, char *err);
 767 void addReplyStatus(redisClient *c, char *status);
 768 void addReplyDouble(redisClient *c, double d);
 769 void addReplyLongLong(redisClient *c, long long ll);
 770 void addReplyMultiBulkLen(redisClient *c, long length);
 771 void *dupClientReplyValue(void *o);
 772 void getClientsMaxBuffers(unsigned long *longest_output_list,
 773                           unsigned long *biggest_input_buffer);
 774 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 775 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
 776
 777 #ifdef __GNUC__
 778 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 779     __attribute__((format(printf, 2, 3)));
 780 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
 781     __attribute__((format(printf, 2, 3)));
 782 #else
 783 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
 784 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
 785 #endif
 786
 787 /* List data type */
 788 void listTypeTryConversion(robj *subject, robj *value);
 789 void listTypePush(robj *subject, robj *value, int where);
 790 robj *listTypePop(robj *subject, int where);
 791 unsigned long listTypeLength(robj *subject);
 792 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
 793 void listTypeReleaseIterator(listTypeIterator *li);
 794 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
 795 robj *listTypeGet(listTypeEntry *entry);
 796 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
 797 int listTypeEqual(listTypeEntry *entry, robj *o);
 798 void listTypeDelete(listTypeEntry *entry);
 799 void listTypeConvert(robj *subject, int enc);
 800 void unblockClientWaitingData(redisClient *c);
 801 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
 802 void popGenericCommand(redisClient *c, int where);
 803
 804 /* MULTI/EXEC/WATCH... */
 805 void unwatchAllKeys(redisClient *c);
 806 void initClientMultiState(redisClient *c);
 807 void freeClientMultiState(redisClient *c);
 808 void queueMultiCommand(redisClient *c);
 809 void touchWatchedKey(redisDb *db, robj *key);
 810 void touchWatchedKeysOnFlush(int dbid);
 811
 812 /* Redis object implementation */
 813 void decrRefCount(void *o);
 814 void incrRefCount(robj *o);
 815 robj *resetRefCount(robj *obj);
 816 void freeStringObject(robj *o);
 817 void freeListObject(robj *o);
 818 void freeSetObject(robj *o);
 819 void freeZsetObject(robj *o);
 820 void freeHashObject(robj *o);
 821 robj *createObject(int type, void *ptr);
 822 robj *createStringObject(char *ptr, size_t len);
 823 robj *dupStringObject(robj *o);
 824 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
 825 robj *tryObjectEncoding(robj *o);
 826 robj *getDecodedObject(robj *o);
 827 size_t stringObjectLen(robj *o);
 828 robj *createStringObjectFromLongLong(long long value);
 829 robj *createListObject(void);
 830 robj *createZiplistObject(void);
 831 robj *createSetObject(void);
 832 robj *createIntsetObject(void);
 833 robj *createHashObject(void);
 834 robj *createZsetObject(void);
 835 robj *createZsetZiplistObject(void);
 836 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
 837 int checkType(redisClient *c, robj *o, int type);
 838 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 839 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 840 int getLongLongFromObject(robj *o, long long *target);
 841 char *strEncoding(int encoding);
 842 int compareStringObjects(robj *a, robj *b);
 843 int equalStringObjects(robj *a, robj *b);
 844 unsigned long estimateObjectIdleTime(robj *o);
 845
 846 /* Synchronous I/O with timeout */
 847 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
 848 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
 849 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
 850
 851 /* Replication */
 852 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 853 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 854 void updateSlavesWaitingBgsave(int bgsaveerr);
 855 void replicationCron(void);
 856
 857 /* Generic persistence functions */
 858 void startLoading(FILE *fp);
 859 void loadingProgress(off_t pos);
 860 void stopLoading(void);
 861
 862 /* RDB persistence */
 863 #include "rdb.h"
 864
 865 /* AOF persistence */
 866 void flushAppendOnlyFile(int force);
 867 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
 868 void aofRemoveTempFile(pid_t childpid);
 869 int rewriteAppendOnlyFileBackground(void);
 870 int loadAppendOnlyFile(char *filename);
 871 void stopAppendOnly(void);
 872 int startAppendOnly(void);
 873 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
 874
 875 /* Sorted sets data type */
 876
 877 /* Struct to hold a inclusive/exclusive range spec. */
 878 typedef struct {
 879     double min, max;
 880     int minex, maxex; /* are min or max exclusive? */
 881 } zrangespec;
 882
 883 zskiplist *zslCreate(void);
 884 void zslFree(zskiplist *zsl);
 885 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 886 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
 887 int zslDelete(zskiplist *zsl, double score, robj *obj);
 888 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
 889 double zzlGetScore(unsigned char *sptr);
 890 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 891 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 892 unsigned int zsetLength(robj *zobj);
 893 void zsetConvert(robj *zobj, int encoding);
 894
 895 /* Core functions */
 896 void freeMemoryIfNeeded(void);
 897 int processCommand(redisClient *c);
 898 void setupSignalHandlers(void);
 899 struct redisCommand *lookupCommand(sds name);
 900 struct redisCommand *lookupCommandByCString(char *s);
 901 void call(redisClient *c);
 902 int prepareForShutdown();
 903 void redisLog(int level, const char *fmt, ...);
 904 void redisLogRaw(int level, const char *msg);
 905 void usage();
 906 void updateDictResizePolicy(void);
 907 int htNeedsResize(dict *dict);
 908 void oom(const char *msg);
 909 void populateCommandTable(void);
 910 void resetCommandTableStats(void);
 911
 912 /* Set data type */
 913 robj *setTypeCreate(robj *value);
 914 int setTypeAdd(robj *subject, robj *value);
 915 int setTypeRemove(robj *subject, robj *value);
 916 int setTypeIsMember(robj *subject, robj *value);
 917 setTypeIterator *setTypeInitIterator(robj *subject);
 918 void setTypeReleaseIterator(setTypeIterator *si);
 919 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
 920 robj *setTypeNextObject(setTypeIterator *si);
 921 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
 922 unsigned long setTypeSize(robj *subject);
 923 void setTypeConvert(robj *subject, int enc);
 924
 925 /* Hash data type */
 926 void convertToRealHash(robj *o);
 927 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 928 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 929 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
 930 robj *hashTypeGetObject(robj *o, robj *key);
 931 int hashTypeExists(robj *o, robj *key);
 932 int hashTypeSet(robj *o, robj *key, robj *value);
 933 int hashTypeDelete(robj *o, robj *key);
 934 unsigned long hashTypeLength(robj *o);
 935 hashTypeIterator *hashTypeInitIterator(robj *subject);
 936 void hashTypeReleaseIterator(hashTypeIterator *hi);
 937 int hashTypeNext(hashTypeIterator *hi);
 938 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
 939 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 940 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 941
 942 /* Pub / Sub */
 943 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 944 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 945 void freePubsubPattern(void *p);
 946 int listMatchPubsubPattern(void *a, void *b);
 947 int pubsubPublishMessage(robj *channel, robj *message);
 948
 949 /* Configuration */
 950 void loadServerConfig(char *filename);
 951 void appendServerSaveParams(time_t seconds, int changes);
 952 void resetServerSaveParams();
 953
 954 /* db.c -- Keyspace access API */
 955 int removeExpire(redisDb *db, robj *key);
 956 void propagateExpire(redisDb *db, robj *key);
 957 int expireIfNeeded(redisDb *db, robj *key);
 958 time_t getExpire(redisDb *db, robj *key);
 959 void setExpire(redisDb *db, robj *key, time_t when);
 960 robj *lookupKey(redisDb *db, robj *key);
 961 robj *lookupKeyRead(redisDb *db, robj *key);
 962 robj *lookupKeyWrite(redisDb *db, robj *key);
 963 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
 964 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
 965 void dbAdd(redisDb *db, robj *key, robj *val);
 966 void dbOverwrite(redisDb *db, robj *key, robj *val);
 967 void setKey(redisDb *db, robj *key, robj *val);
 968 int dbExists(redisDb *db, robj *key);
 969 robj *dbRandomKey(redisDb *db);
 970 int dbDelete(redisDb *db, robj *key);
 971 long long emptyDb();
 972 int selectDb(redisClient *c, int id);
 973 void signalModifiedKey(redisDb *db, robj *key);
 974 void signalFlushedDb(int dbid);
 975 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
 976
 977 /* API to get key arguments from commands */
 978 #define REDIS_GETKEYS_ALL 0
 979 #define REDIS_GETKEYS_PRELOAD 1
 980 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 981 void getKeysFreeResult(int *result);
 982 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 983 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 984 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
 985
 986 /* Cluster */
 987 void clusterInit(void);
 988 unsigned short crc16(const char *buf, int len);
 989 unsigned int keyHashSlot(char *key, int keylen);
 990 clusterNode *createClusterNode(char *nodename, int flags);
 991 int clusterAddNode(clusterNode *node);
 992 void clusterCron(void);
 993 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
 994 void clusterPropagatePublish(robj *channel, robj *message);
 995
 996 /* Scripting */
 997 void scriptingInit(void);
 998
 999 /* Git SHA1 */
1000 char *redisGitSHA1(void);
1001 char *redisGitDirty(void);
1002
1003 /* Commands prototypes */
1004 void authCommand(redisClient *c);
1005 void pingCommand(redisClient *c);
1006 void echoCommand(redisClient *c);
1007 void setCommand(redisClient *c);
1008 void setnxCommand(redisClient *c);
1009 void setexCommand(redisClient *c);
1010 void getCommand(redisClient *c);
1011 void delCommand(redisClient *c);
1012 void existsCommand(redisClient *c);
1013 void setbitCommand(redisClient *c);
1014 void getbitCommand(redisClient *c);
1015 void setrangeCommand(redisClient *c);
1016 void getrangeCommand(redisClient *c);
1017 void incrCommand(redisClient *c);
1018 void decrCommand(redisClient *c);
1019 void incrbyCommand(redisClient *c);
1020 void decrbyCommand(redisClient *c);
1021 void selectCommand(redisClient *c);
1022 void randomkeyCommand(redisClient *c);
1023 void keysCommand(redisClient *c);
1024 void dbsizeCommand(redisClient *c);
1025 void lastsaveCommand(redisClient *c);
1026 void saveCommand(redisClient *c);
1027 void bgsaveCommand(redisClient *c);
1028 void bgrewriteaofCommand(redisClient *c);
1029 void shutdownCommand(redisClient *c);
1030 void moveCommand(redisClient *c);
1031 void renameCommand(redisClient *c);
1032 void renamenxCommand(redisClient *c);
1033 void lpushCommand(redisClient *c);
1034 void rpushCommand(redisClient *c);
1035 void lpushxCommand(redisClient *c);
1036 void rpushxCommand(redisClient *c);
1037 void linsertCommand(redisClient *c);
1038 void lpopCommand(redisClient *c);
1039 void rpopCommand(redisClient *c);
1040 void llenCommand(redisClient *c);
1041 void lindexCommand(redisClient *c);
1042 void lrangeCommand(redisClient *c);
1043 void ltrimCommand(redisClient *c);
1044 void typeCommand(redisClient *c);
1045 void lsetCommand(redisClient *c);
1046 void saddCommand(redisClient *c);
1047 void sremCommand(redisClient *c);
1048 void smoveCommand(redisClient *c);
1049 void sismemberCommand(redisClient *c);
1050 void scardCommand(redisClient *c);
1051 void spopCommand(redisClient *c);
1052 void srandmemberCommand(redisClient *c);
1053 void sinterCommand(redisClient *c);
1054 void sinterstoreCommand(redisClient *c);
1055 void sunionCommand(redisClient *c);
1056 void sunionstoreCommand(redisClient *c);
1057 void sdiffCommand(redisClient *c);
1058 void sdiffstoreCommand(redisClient *c);
1059 void syncCommand(redisClient *c);
1060 void flushdbCommand(redisClient *c);
1061 void flushallCommand(redisClient *c);
1062 void sortCommand(redisClient *c);
1063 void lremCommand(redisClient *c);
1064 void rpoplpushCommand(redisClient *c);
1065 void infoCommand(redisClient *c);
1066 void mgetCommand(redisClient *c);
1067 void monitorCommand(redisClient *c);
1068 void expireCommand(redisClient *c);
1069 void expireatCommand(redisClient *c);
1070 void getsetCommand(redisClient *c);
1071 void ttlCommand(redisClient *c);
1072 void persistCommand(redisClient *c);
1073 void slaveofCommand(redisClient *c);
1074 void debugCommand(redisClient *c);
1075 void msetCommand(redisClient *c);
1076 void msetnxCommand(redisClient *c);
1077 void zaddCommand(redisClient *c);
1078 void zincrbyCommand(redisClient *c);
1079 void zrangeCommand(redisClient *c);
1080 void zrangebyscoreCommand(redisClient *c);
1081 void zrevrangebyscoreCommand(redisClient *c);
1082 void zcountCommand(redisClient *c);
1083 void zrevrangeCommand(redisClient *c);
1084 void zcardCommand(redisClient *c);
1085 void zremCommand(redisClient *c);
1086 void zscoreCommand(redisClient *c);
1087 void zremrangebyscoreCommand(redisClient *c);
1088 void multiCommand(redisClient *c);
1089 void execCommand(redisClient *c);
1090 void discardCommand(redisClient *c);
1091 void blpopCommand(redisClient *c);
1092 void brpopCommand(redisClient *c);
1093 void brpoplpushCommand(redisClient *c);
1094 void appendCommand(redisClient *c);
1095 void strlenCommand(redisClient *c);
1096 void zrankCommand(redisClient *c);
1097 void zrevrankCommand(redisClient *c);
1098 void hsetCommand(redisClient *c);
1099 void hsetnxCommand(redisClient *c);
1100 void hgetCommand(redisClient *c);
1101 void hmsetCommand(redisClient *c);
1102 void hmgetCommand(redisClient *c);
1103 void hdelCommand(redisClient *c);
1104 void hlenCommand(redisClient *c);
1105 void zremrangebyrankCommand(redisClient *c);
1106 void zunionstoreCommand(redisClient *c);
1107 void zinterstoreCommand(redisClient *c);
1108 void hkeysCommand(redisClient *c);
1109 void hvalsCommand(redisClient *c);
1110 void hgetallCommand(redisClient *c);
1111 void hexistsCommand(redisClient *c);
1112 void configCommand(redisClient *c);
1113 void hincrbyCommand(redisClient *c);
1114 void subscribeCommand(redisClient *c);
1115 void unsubscribeCommand(redisClient *c);
1116 void psubscribeCommand(redisClient *c);
1117 void punsubscribeCommand(redisClient *c);
1118 void publishCommand(redisClient *c);
1119 void watchCommand(redisClient *c);
1120 void unwatchCommand(redisClient *c);
1121 void clusterCommand(redisClient *c);
1122 void restoreCommand(redisClient *c);
1123 void migrateCommand(redisClient *c);
1124 void dumpCommand(redisClient *c);
1125 void objectCommand(redisClient *c);
1126 void clientCommand(redisClient *c);
1127 void evalCommand(redisClient *c);
1128 void evalShaCommand(redisClient *c);
1129
1130 #if defined(__GNUC__)
1131 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1132 void free(void *ptr) __attribute__ ((deprecated));
1133 void *malloc(size_t size) __attribute__ ((deprecated));
1134 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1135 #endif
1136
1137 /* Debugging stuff */
1138 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1139 void _redisAssert(char *estr, char *file, int line);
1140 void _redisPanic(char *msg, char *file, int line);
1141
1142 #endif