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
  23 #include "ae.h"     /* Event driven programming library */
  24 #include "sds.h"    /* Dynamic safe strings */
  25 #include "dict.h"   /* Hash tables */
  26 #include "adlist.h" /* Linked lists */
  27 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
  28 #include "anet.h"   /* Networking the easy way */
  29 #include "zipmap.h" /* Compact string -> string data structure */
  30 #include "ziplist.h" /* Compact list data structure */
  31 #include "intset.h" /* Compact integer set structure */
  32 #include "version.h"
  33 #include "util.h"
  34
  35 /* Error codes */
  36 #define REDIS_OK                0
  37 #define REDIS_ERR               -1
  38
  39 /* Static server configuration */
  40 #define REDIS_SERVERPORT        6379    /* TCP port */
  41 #define REDIS_MAXIDLETIME       (60*5)  /* default client timeout */
  42 #define REDIS_IOBUF_LEN         1024
  43 #define REDIS_LOADBUF_LEN       1024
  44 #define REDIS_DEFAULT_DBNUM     16
  45 #define REDIS_CONFIGLINE_MAX    1024
  46 #define REDIS_MAX_SYNC_TIME     60      /* Slave can't take more to sync */
  47 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
  48 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
  49 #define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */
  50 #define REDIS_SHARED_INTEGERS 10000
  51 #define REDIS_REPLY_CHUNK_BYTES (5*1500) /* 5 TCP packets with default MTU */
  52 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
  53 #define REDIS_AUTO_AOFREWRITE_PERC  100
  54 #define REDIS_AUTO_AOFREWRITE_MIN_SIZE (1024*1024)
  55
  56 /* Hash table parameters */
  57 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
  58
  59 /* Command flags:
  60  *   REDIS_CMD_DENYOOM:
  61  *     Commands marked with this flag will return an error when 'maxmemory' is
  62  *     set and the server is using more than 'maxmemory' bytes of memory.
  63  *     In short: commands with this flag are denied on low memory conditions.
  64  *   REDIS_CMD_FORCE_REPLICATION:
  65  *     Force replication even if dirty is 0. */
  66 #define REDIS_CMD_DENYOOM 4
  67 #define REDIS_CMD_FORCE_REPLICATION 8
  68
  69 /* Object types */
  70 #define REDIS_STRING 0
  71 #define REDIS_LIST 1
  72 #define REDIS_SET 2
  73 #define REDIS_ZSET 3
  74 #define REDIS_HASH 4
  75 #define REDIS_VMPOINTER 8
  76
  77 /* Object types only used for persistence in .rdb files */
  78 #define REDIS_HASH_ZIPMAP 9
  79 #define REDIS_LIST_ZIPLIST 10
  80 #define REDIS_SET_INTSET 11
  81 #define REDIS_ZSET_ZIPLIST 12
  82
  83 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  84  * internally represented in multiple ways. The 'encoding' field of the object
  85  * is set to one of this fields for this object. */
  86 #define REDIS_ENCODING_RAW 0     /* Raw representation */
  87 #define REDIS_ENCODING_INT 1     /* Encoded as integer */
  88 #define REDIS_ENCODING_HT 2      /* Encoded as hash table */
  89 #define REDIS_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
  90 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
  91 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
  92 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
  93 #define REDIS_ENCODING_SKIPLIST 7  /* Encoded as skiplist */
  94
  95 /* Object types only used for dumping to disk */
  96 #define REDIS_EXPIRETIME 253
  97 #define REDIS_SELECTDB 254
  98 #define REDIS_EOF 255
  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
 138 /* Client request types */
 139 #define REDIS_REQ_INLINE 1
 140 #define REDIS_REQ_MULTIBULK 2
 141
 142 /* Slave replication state - slave side */
 143 #define REDIS_REPL_NONE 0 /* No active replication */
 144 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
 145 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
 146 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
 147 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
 148
 149 /* Synchronous read timeout - slave side */
 150 #define REDIS_REPL_SYNCIO_TIMEOUT 5
 151
 152 /* Slave replication state - from the point of view of master
 153  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 154  * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
 155  * to start the next background saving in order to send updates to it. */
 156 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
 157 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
 158 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
 159 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
 160
 161 /* List related stuff */
 162 #define REDIS_HEAD 0
 163 #define REDIS_TAIL 1
 164
 165 /* Sort operations */
 166 #define REDIS_SORT_GET 0
 167 #define REDIS_SORT_ASC 1
 168 #define REDIS_SORT_DESC 2
 169 #define REDIS_SORTKEY_MAX 1024
 170
 171 /* Log levels */
 172 #define REDIS_DEBUG 0
 173 #define REDIS_VERBOSE 1
 174 #define REDIS_NOTICE 2
 175 #define REDIS_WARNING 3
 176 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
 177
 178 /* Anti-warning macro... */
 179 #define REDIS_NOTUSED(V) ((void) V)
 180
 181 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
 182 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 183
 184 /* Append only defines */
 185 #define APPENDFSYNC_NO 0
 186 #define APPENDFSYNC_ALWAYS 1
 187 #define APPENDFSYNC_EVERYSEC 2
 188
 189 /* Zip structure related defaults */
 190 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 191 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 192 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 193 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 194 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 195 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
 196 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
 197
 198 /* Sets operations codes */
 199 #define REDIS_OP_UNION 0
 200 #define REDIS_OP_DIFF 1
 201 #define REDIS_OP_INTER 2
 202
 203 /* Redis maxmemory strategies */
 204 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
 205 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
 206 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 207 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 208 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 209 #define REDIS_MAXMEMORY_NO_EVICTION 5
 210
 211 /* We can print the stacktrace, so our assert is defined this way: */
 212 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 213 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 214 void _redisAssert(char *estr, char *file, int line);
 215 void _redisPanic(char *msg, char *file, int line);
 216
 217 /*-----------------------------------------------------------------------------
 218  * Data types
 219  *----------------------------------------------------------------------------*/
 220
 221 /* A redis object, that is a type able to hold a string / list / set */
 222
 223 /* The actual Redis Object */
 224 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
 225 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
 226 typedef struct redisObject {
 227     unsigned type:4;
 228     unsigned notused:2;     /* Not used */
 229     unsigned encoding:4;
 230     unsigned lru:22;        /* lru time (relative to server.lruclock) */
 231     int refcount;
 232     void *ptr;
 233     /* VM fields are only allocated if VM is active, otherwise the
 234      * object allocation function will just allocate
 235      * sizeof(redisObjct) minus sizeof(redisObjectVM), so using
 236      * Redis without VM active will not have any overhead. */
 237 } robj;
 238
 239 /* The VM pointer structure - identifies an object in the swap file.
 240  *
 241  * This object is stored in place of the value
 242  * object in the main key->value hash table representing a database.
 243  * Note that the first fields (type, storage) are the same as the redisObject
 244  * structure so that vmPointer strucuters can be accessed even when casted
 245  * as redisObject structures.
 246  *
 247  * This is useful as we don't know if a value object is or not on disk, but we
 248  * are always able to read obj->storage to check this. For vmPointer
 249  * structures "type" is set to REDIS_VMPOINTER (even if without this field
 250  * is still possible to check the kind of object from the value of 'storage').*/
 251 typedef struct vmPointer {
 252     unsigned type:4;
 253     unsigned storage:2; /* REDIS_VM_SWAPPED or REDIS_VM_LOADING */
 254     unsigned notused:26;
 255     unsigned int vtype; /* type of the object stored in the swap file */
 256     off_t page;         /* the page at witch the object is stored on disk */
 257     off_t usedpages;    /* number of pages used on disk */
 258 } vmpointer;
 259
 260 /* Macro used to initalize a Redis object allocated on the stack.
 261  * Note that this macro is taken near the structure definition to make sure
 262  * we'll update it when the structure is changed, to avoid bugs like
 263  * bug #85 introduced exactly in this way. */
 264 #define initStaticStringObject(_var,_ptr) do { \
 265     _var.refcount = 1; \
 266     _var.type = REDIS_STRING; \
 267     _var.encoding = REDIS_ENCODING_RAW; \
 268     _var.ptr = _ptr; \
 269 } while(0);
 270
 271 typedef struct redisDb {
 272     dict *dict;                 /* The keyspace for this DB */
 273     dict *expires;              /* Timeout of keys with a timeout set */
 274     dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */
 275     dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */
 276     int id;
 277 } redisDb;
 278
 279 /* Client MULTI/EXEC state */
 280 typedef struct multiCmd {
 281     robj **argv;
 282     int argc;
 283     struct redisCommand *cmd;
 284 } multiCmd;
 285
 286 typedef struct multiState {
 287     multiCmd *commands;     /* Array of MULTI commands */
 288     int count;              /* Total number of MULTI commands */
 289 } multiState;
 290
 291 typedef struct blockingState {
 292     robj **keys;            /* The key we are waiting to terminate a blocking
 293                              * operation such as BLPOP. Otherwise NULL. */
 294     int count;              /* Number of blocking keys */
 295     time_t timeout;         /* Blocking operation timeout. If UNIX current time
 296                              * is >= timeout then the operation timed out. */
 297     robj *target;           /* The key that should receive the element,
 298                              * for BRPOPLPUSH. */
 299 } blockingState;
 300
 301 /* With multiplexing we need to take per-clinet state.
 302  * Clients are taken in a liked list. */
 303 typedef struct redisClient {
 304     int fd;
 305     redisDb *db;
 306     int dictid;
 307     sds querybuf;
 308     int argc;
 309     robj **argv;
 310     int reqtype;
 311     int multibulklen;       /* number of multi bulk arguments left to read */
 312     long bulklen;           /* length of bulk argument in multi bulk request */
 313     list *reply;
 314     int sentlen;
 315     time_t lastinteraction; /* time of the last interaction, used for timeout */
 316     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
 317     int slaveseldb;         /* slave selected db, if this client is a slave */
 318     int authenticated;      /* when requirepass is non-NULL */
 319     int replstate;          /* replication state if this is a slave */
 320     int repldbfd;           /* replication DB file descriptor */
 321     long repldboff;         /* replication DB file offset */
 322     off_t repldbsize;       /* replication DB file size */
 323     multiState mstate;      /* MULTI/EXEC state */
 324     blockingState bpop;   /* blocking state */
 325     list *io_keys;          /* Keys this client is waiting to be loaded from the
 326                              * swap file in order to continue. */
 327     list *watched_keys;     /* Keys WATCHED for MULTI/EXEC CAS */
 328     dict *pubsub_channels;  /* channels a client is interested in (SUBSCRIBE) */
 329     list *pubsub_patterns;  /* patterns a client is interested in (SUBSCRIBE) */
 330
 331     /* Response buffer */
 332     int bufpos;
 333     char buf[REDIS_REPLY_CHUNK_BYTES];
 334 } redisClient;
 335
 336 struct saveparam {
 337     time_t seconds;
 338     int changes;
 339 };
 340
 341 struct sharedObjectsStruct {
 342     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
 343     *colon, *nullbulk, *nullmultibulk, *queued,
 344     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
 345     *outofrangeerr, *loadingerr, *plus,
 346     *select0, *select1, *select2, *select3, *select4,
 347     *select5, *select6, *select7, *select8, *select9,
 348     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
 349     *mbulk4, *psubscribebulk, *punsubscribebulk,
 350     *integers[REDIS_SHARED_INTEGERS];
 351 };
 352
 353 /* ZSETs use a specialized version of Skiplists */
 354 typedef struct zskiplistNode {
 355     robj *obj;
 356     double score;
 357     struct zskiplistNode *backward;
 358     struct zskiplistLevel {
 359         struct zskiplistNode *forward;
 360         unsigned int span;
 361     } level[];
 362 } zskiplistNode;
 363
 364 typedef struct zskiplist {
 365     struct zskiplistNode *header, *tail;
 366     unsigned long length;
 367     int level;
 368 } zskiplist;
 369
 370 typedef struct zset {
 371     dict *dict;
 372     zskiplist *zsl;
 373 } zset;
 374
 375 /*-----------------------------------------------------------------------------
 376  * Redis cluster data structures
 377  *----------------------------------------------------------------------------*/
 378
 379 #define REDIS_CLUSTER_SLOTS 4096
 380 #define REDIS_CLUSTER_OK 0          /* Everything looks ok */
 381 #define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
 382 #define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */
 383 #define REDIS_CLUSTER_NAMELEN 40    /* sha1 hex length */
 384 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
 385
 386 struct clusterNode;
 387
 388 /* clusterLink encapsulates everything needed to talk with a remote node. */
 389 typedef struct clusterLink {
 390     int fd;                     /* TCP socket file descriptor */
 391     sds sndbuf;                 /* Packet send buffer */
 392     sds rcvbuf;                 /* Packet reception buffer */
 393     struct clusterNode *node;   /* Node related to this link if any, or NULL */
 394 } clusterLink;
 395
 396 /* Node flags */
 397 #define REDIS_NODE_MASTER 1     /* The node is a master */
 398 #define REDIS_NODE_SLAVE 2      /* The node is a slave */
 399 #define REDIS_NODE_PFAIL 4      /* Failure? Need acknowledge */
 400 #define REDIS_NODE_FAIL 8       /* The node is believed to be malfunctioning */
 401 #define REDIS_NODE_MYSELF 16    /* This node is myself */
 402 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
 403 #define REDIS_NODE_NOADDR   64  /* We don't know the address of this node */
 404 #define REDIS_NODE_MEET 128     /* Send a MEET message to this node */
 405 #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"
 406
 407 struct clusterNode {
 408     char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
 409     int flags;      /* REDIS_NODE_... */
 410     unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
 411     int numslaves;  /* Number of slave nodes, if this is a master */
 412     struct clusterNode **slaves; /* pointers to slave nodes */
 413     struct clusterNode *slaveof; /* pointer to the master node */
 414     time_t ping_sent;       /* Unix time we sent latest ping */
 415     time_t pong_received;   /* Unix time we received the pong */
 416     char *configdigest;         /* Configuration digest of this node */
 417     time_t configdigest_ts;     /* Configuration digest timestamp */
 418     char ip[16];                /* Latest known IP address of this node */
 419     int port;                   /* Latest known port of this node */
 420     clusterLink *link;          /* TCP/IP link with this node */
 421 };
 422 typedef struct clusterNode clusterNode;
 423
 424 typedef struct {
 425     char *configfile;
 426     clusterNode *myself;  /* This node */
 427     int state;            /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
 428     int node_timeout;
 429     dict *nodes;          /* Hash table of name -> clusterNode structures */
 430     clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
 431     clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
 432     clusterNode *slots[REDIS_CLUSTER_SLOTS];
 433     zskiplist *slots_to_keys;
 434 } clusterState;
 435
 436 /* Redis cluster messages header */
 437
 438 /* Note that the PING, PONG and MEET messages are actually the same exact
 439  * kind of packet. PONG is the reply to ping, in the extact format as a PING,
 440  * while MEET is a special PING that forces the receiver to add the sender
 441  * as a node (if it is not already in the list). */
 442 #define CLUSTERMSG_TYPE_PING 0          /* Ping */
 443 #define CLUSTERMSG_TYPE_PONG 1          /* Pong (reply to Ping) */
 444 #define CLUSTERMSG_TYPE_MEET 2          /* Meet "let's join" message */
 445 #define CLUSTERMSG_TYPE_FAIL 3          /* Mark node xxx as failing */
 446
 447 /* Initially we don't know our "name", but we'll find it once we connect
 448  * to the first node, using the getsockname() function. Then we'll use this
 449  * address for all the next messages. */
 450 typedef struct {
 451     char nodename[REDIS_CLUSTER_NAMELEN];
 452     uint32_t ping_sent;
 453     uint32_t pong_received;
 454     char ip[16];    /* IP address last time it was seen */
 455     uint16_t port;  /* port last time it was seen */
 456     uint16_t flags;
 457     uint32_t notused; /* for 64 bit alignment */
 458 } clusterMsgDataGossip;
 459
 460 typedef struct {
 461     char nodename[REDIS_CLUSTER_NAMELEN];
 462 } clusterMsgDataFail;
 463
 464 union clusterMsgData {
 465     /* PING, MEET and PONG */
 466     struct {
 467         /* Array of N clusterMsgDataGossip structures */
 468         clusterMsgDataGossip gossip[1];
 469     } ping;
 470     /* FAIL */
 471     struct {
 472         clusterMsgDataFail about;
 473     } fail;
 474 };
 475
 476 typedef struct {
 477     uint32_t totlen;    /* Total length of this message */
 478     uint16_t type;      /* Message type */
 479     uint16_t count;     /* Only used for some kind of messages. */
 480     char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
 481     unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
 482     char slaveof[REDIS_CLUSTER_NAMELEN];
 483     char configdigest[32];
 484     uint16_t port;      /* Sender TCP base port */
 485     unsigned char state; /* Cluster state from the POV of the sender */
 486     unsigned char notused[5]; /* Reserved for future use. For alignment. */
 487     union clusterMsgData data;
 488 } clusterMsg;
 489
 490 /*-----------------------------------------------------------------------------
 491  * Global server state
 492  *----------------------------------------------------------------------------*/
 493
 494 struct redisServer {
 495     /* General */
 496     redisDb *db;
 497     dict *commands;             /* Command table hahs table */
 498     aeEventLoop *el;
 499     /* Networking */
 500     int port;
 501     char *bindaddr;
 502     char *unixsocket;
 503     int ipfd;
 504     int sofd;
 505     int cfd;
 506     list *clients;
 507     list *slaves, *monitors;
 508     char neterr[ANET_ERR_LEN];
 509     /* RDB / AOF loading information */
 510     int loading;
 511     off_t loading_total_bytes;
 512     off_t loading_loaded_bytes;
 513     time_t loading_start_time;
 514     /* Fast pointers to often looked up command */
 515     struct redisCommand *delCommand, *multiCommand;
 516     int cronloops;              /* number of times the cron function run */
 517     time_t lastsave;                /* Unix time of last save succeeede */
 518     /* Fields used only for stats */
 519     time_t stat_starttime;          /* server start time */
 520     long long stat_numcommands;     /* number of processed commands */
 521     long long stat_numconnections;  /* number of connections received */
 522     long long stat_expiredkeys;     /* number of expired keys */
 523     long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
 524     long long stat_keyspace_hits;   /* number of successful lookups of keys */
 525     long long stat_keyspace_misses; /* number of failed lookups of keys */
 526     size_t stat_peak_memory;        /* max used memory record */
 527     long long stat_fork_time;       /* time needed to perform latets fork() */
 528     /* Configuration */
 529     int verbosity;
 530     int maxidletime;
 531     int dbnum;
 532     int daemonize;
 533     int appendonly;
 534     int appendfsync;
 535     int no_appendfsync_on_rewrite;
 536     int auto_aofrewrite_perc;       /* Rewrite AOF if % growth is > M and... */
 537     off_t auto_aofrewrite_min_size; /* the AOF file is at least N bytes. */
 538     off_t auto_aofrewrite_base_size;/* AOF size on latest startup or rewrite. */
 539     off_t appendonly_current_size;  /* AOF current size. */
 540     int aofrewrite_scheduled;       /* Rewrite once BGSAVE terminates. */
 541     int shutdown_asap;
 542     int activerehashing;
 543     char *requirepass;
 544     /* Persistence */
 545     long long dirty;            /* changes to DB from the last save */
 546     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
 547     time_t lastfsync;
 548     int appendfd;
 549     int appendseldb;
 550     char *pidfile;
 551     pid_t bgsavechildpid;
 552     pid_t bgrewritechildpid;
 553     sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
 554     sds aofbuf;       /* AOF buffer, written before entering the event loop */
 555     struct saveparam *saveparams;
 556     int saveparamslen;
 557     char *dbfilename;
 558     int rdbcompression;
 559     char *appendfilename;
 560     /* Logging */
 561     char *logfile;
 562     int syslog_enabled;
 563     char *syslog_ident;
 564     int syslog_facility;
 565     /* Replication related */
 566     int isslave;
 567     /* Slave specific fields */
 568     char *masterauth;
 569     char *masterhost;
 570     int masterport;
 571     redisClient *master;    /* client that is master for this slave */
 572     int repl_syncio_timeout; /* timeout for synchronous I/O calls */
 573     int replstate;          /* replication status if the instance is a slave */
 574     off_t repl_transfer_left;  /* bytes left reading .rdb  */
 575     int repl_transfer_s;    /* slave -> master SYNC socket */
 576     int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
 577     char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
 578     time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
 579     int repl_serve_stale_data; /* Serve stale data when link is down? */
 580     time_t repl_down_since; /* unix time at which link with master went down */
 581     /* Limits */
 582     unsigned int maxclients;
 583     unsigned long long maxmemory;
 584     int maxmemory_policy;
 585     int maxmemory_samples;
 586     /* Blocked clients */
 587     unsigned int bpop_blocked_clients;
 588     list *unblocked_clients; /* list of clients to unblock before next loop */
 589     /* Sort parameters - qsort_r() is only available under BSD so we
 590      * have to take this state global, in order to pass it to sortCompare() */
 591     int sort_desc;
 592     int sort_alpha;
 593     int sort_bypattern;
 594     /* Zip structure config */
 595     size_t hash_max_zipmap_entries;
 596     size_t hash_max_zipmap_value;
 597     size_t list_max_ziplist_entries;
 598     size_t list_max_ziplist_value;
 599     size_t set_max_intset_entries;
 600     size_t zset_max_ziplist_entries;
 601     size_t zset_max_ziplist_value;
 602     time_t unixtime;    /* Unix time sampled every second. */
 603     /* Virtual memory I/O threads stuff */
 604     /* An I/O thread process an element taken from the io_jobs queue and
 605      * put the result of the operation in the io_done list. While the
 606      * job is being processed, it's put on io_processing queue. */
 607     list *io_newjobs; /* List of VM I/O jobs yet to be processed */
 608     list *io_processing; /* List of VM I/O jobs being processed */
 609     list *io_processed; /* List of VM I/O jobs already processed */
 610     list *io_ready_clients; /* Clients ready to be unblocked. All keys loaded */
 611     pthread_mutex_t io_mutex; /* lock to access io_jobs/io_done/io_thread_job */
 612     pthread_cond_t io_condvar; /* I/O threads conditional variable */
 613     pthread_attr_t io_threads_attr; /* attributes for threads creation */
 614     int io_active_threads; /* Number of running I/O threads */
 615     int vm_max_threads; /* Max number of I/O threads running at the same time */
 616     /* Our main thread is blocked on the event loop, locking for sockets ready
 617      * to be read or written, so when a threaded I/O operation is ready to be
 618      * processed by the main thread, the I/O thread will use a unix pipe to
 619      * awake the main thread. The followings are the two pipe FDs. */
 620     int io_ready_pipe_read;
 621     int io_ready_pipe_write;
 622     /* Virtual memory stats */
 623     unsigned long long vm_stats_used_pages;
 624     unsigned long long vm_stats_swapped_objects;
 625     unsigned long long vm_stats_swapouts;
 626     unsigned long long vm_stats_swapins;
 627     /* Pubsub */
 628     dict *pubsub_channels; /* Map channels to list of subscribed clients */
 629     list *pubsub_patterns; /* A list of pubsub_patterns */
 630     /* Misc */
 631     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
 632     unsigned lruclock_padding:10;
 633     /* Cluster */
 634     int cluster_enabled;
 635     clusterState cluster;
 636 };
 637
 638 typedef struct pubsubPattern {
 639     redisClient *client;
 640     robj *pattern;
 641 } pubsubPattern;
 642
 643 typedef void redisCommandProc(redisClient *c);
 644 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
 645 struct redisCommand {
 646     char *name;
 647     redisCommandProc *proc;
 648     int arity;
 649     int flags;
 650     /* Use a function to determine keys arguments in a command line.
 651      * Used for Redis Cluster redirect. */
 652     redisGetKeysProc *getkeys_proc;
 653     /* What keys should be loaded in background when calling this command? */
 654     int firstkey; /* The first argument that's a key (0 = no keys) */
 655     int lastkey;  /* THe last argument that's a key */
 656     int keystep;  /* The step between first and last key */
 657     long long microseconds, calls;
 658 };
 659
 660 struct redisFunctionSym {
 661     char *name;
 662     unsigned long pointer;
 663 };
 664
 665 typedef struct _redisSortObject {
 666     robj *obj;
 667     union {
 668         double score;
 669         robj *cmpobj;
 670     } u;
 671 } redisSortObject;
 672
 673 typedef struct _redisSortOperation {
 674     int type;
 675     robj *pattern;
 676 } redisSortOperation;
 677
 678 /* Structure to hold list iteration abstraction. */
 679 typedef struct {
 680     robj *subject;
 681     unsigned char encoding;
 682     unsigned char direction; /* Iteration direction */
 683     unsigned char *zi;
 684     listNode *ln;
 685 } listTypeIterator;
 686
 687 /* Structure for an entry while iterating over a list. */
 688 typedef struct {
 689     listTypeIterator *li;
 690     unsigned char *zi;  /* Entry in ziplist */
 691     listNode *ln;       /* Entry in linked list */
 692 } listTypeEntry;
 693
 694 /* Structure to hold set iteration abstraction. */
 695 typedef struct {
 696     robj *subject;
 697     int encoding;
 698     int ii; /* intset iterator */
 699     dictIterator *di;
 700 } setTypeIterator;
 701
 702 /* Structure to hold hash iteration abstration. Note that iteration over
 703  * hashes involves both fields and values. Because it is possible that
 704  * not both are required, store pointers in the iterator to avoid
 705  * unnecessary memory allocation for fields/values. */
 706 typedef struct {
 707     int encoding;
 708     unsigned char *zi;
 709     unsigned char *zk, *zv;
 710     unsigned int zklen, zvlen;
 711
 712     dictIterator *di;
 713     dictEntry *de;
 714 } hashTypeIterator;
 715
 716 #define REDIS_HASH_KEY 1
 717 #define REDIS_HASH_VALUE 2
 718
 719 /*-----------------------------------------------------------------------------
 720  * Extern declarations
 721  *----------------------------------------------------------------------------*/
 722
 723 extern struct redisServer server;
 724 extern struct sharedObjectsStruct shared;
 725 extern dictType setDictType;
 726 extern dictType zsetDictType;
 727 extern dictType clusterNodesDictType;
 728 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 729 dictType hashDictType;
 730
 731 /*-----------------------------------------------------------------------------
 732  * Functions prototypes
 733  *----------------------------------------------------------------------------*/
 734
 735 /* Utils */
 736 long long ustime(void);
 737
 738 /* networking.c -- Networking and Client related operations */
 739 redisClient *createClient(int fd);
 740 void closeTimedoutClients(void);
 741 void freeClient(redisClient *c);
 742 void resetClient(redisClient *c);
 743 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
 744 void addReply(redisClient *c, robj *obj);
 745 void *addDeferredMultiBulkLength(redisClient *c);
 746 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
 747 void addReplySds(redisClient *c, sds s);
 748 void processInputBuffer(redisClient *c);
 749 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 750 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 751 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 752 void addReplyBulk(redisClient *c, robj *obj);
 753 void addReplyBulkCString(redisClient *c, char *s);
 754 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
 755 void addReplyBulkLongLong(redisClient *c, long long ll);
 756 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 757 void addReply(redisClient *c, robj *obj);
 758 void addReplySds(redisClient *c, sds s);
 759 void addReplyError(redisClient *c, char *err);
 760 void addReplyStatus(redisClient *c, char *status);
 761 void addReplyDouble(redisClient *c, double d);
 762 void addReplyLongLong(redisClient *c, long long ll);
 763 void addReplyMultiBulkLen(redisClient *c, long length);
 764 void *dupClientReplyValue(void *o);
 765 void getClientsMaxBuffers(unsigned long *longest_output_list,
 766                           unsigned long *biggest_input_buffer);
 767 void rewriteClientCommandVector(redisClient *c, int argc, ...);
 768
 769 #ifdef __GNUC__
 770 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 771     __attribute__((format(printf, 2, 3)));
 772 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
 773     __attribute__((format(printf, 2, 3)));
 774 #else
 775 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
 776 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
 777 #endif
 778
 779 /* List data type */
 780 void listTypeTryConversion(robj *subject, robj *value);
 781 void listTypePush(robj *subject, robj *value, int where);
 782 robj *listTypePop(robj *subject, int where);
 783 unsigned long listTypeLength(robj *subject);
 784 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
 785 void listTypeReleaseIterator(listTypeIterator *li);
 786 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
 787 robj *listTypeGet(listTypeEntry *entry);
 788 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
 789 int listTypeEqual(listTypeEntry *entry, robj *o);
 790 void listTypeDelete(listTypeEntry *entry);
 791 void listTypeConvert(robj *subject, int enc);
 792 void unblockClientWaitingData(redisClient *c);
 793 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
 794 void popGenericCommand(redisClient *c, int where);
 795
 796 /* MULTI/EXEC/WATCH... */
 797 void unwatchAllKeys(redisClient *c);
 798 void initClientMultiState(redisClient *c);
 799 void freeClientMultiState(redisClient *c);
 800 void queueMultiCommand(redisClient *c, struct redisCommand *cmd);
 801 void touchWatchedKey(redisDb *db, robj *key);
 802 void touchWatchedKeysOnFlush(int dbid);
 803
 804 /* Redis object implementation */
 805 void decrRefCount(void *o);
 806 void incrRefCount(robj *o);
 807 void freeStringObject(robj *o);
 808 void freeListObject(robj *o);
 809 void freeSetObject(robj *o);
 810 void freeZsetObject(robj *o);
 811 void freeHashObject(robj *o);
 812 robj *createObject(int type, void *ptr);
 813 robj *createStringObject(char *ptr, size_t len);
 814 robj *dupStringObject(robj *o);
 815 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
 816 robj *tryObjectEncoding(robj *o);
 817 robj *getDecodedObject(robj *o);
 818 size_t stringObjectLen(robj *o);
 819 robj *createStringObjectFromLongLong(long long value);
 820 robj *createListObject(void);
 821 robj *createZiplistObject(void);
 822 robj *createSetObject(void);
 823 robj *createIntsetObject(void);
 824 robj *createHashObject(void);
 825 robj *createZsetObject(void);
 826 robj *createZsetZiplistObject(void);
 827 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
 828 int checkType(redisClient *c, robj *o, int type);
 829 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 830 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 831 int getLongLongFromObject(robj *o, long long *target);
 832 char *strEncoding(int encoding);
 833 int compareStringObjects(robj *a, robj *b);
 834 int equalStringObjects(robj *a, robj *b);
 835 unsigned long estimateObjectIdleTime(robj *o);
 836
 837 /* Synchronous I/O with timeout */
 838 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
 839 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
 840 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
 841 int fwriteBulkString(FILE *fp, char *s, unsigned long len);
 842 int fwriteBulkDouble(FILE *fp, double d);
 843 int fwriteBulkLongLong(FILE *fp, long long l);
 844 int fwriteBulkObject(FILE *fp, robj *obj);
 845 int fwriteBulkCount(FILE *fp, char prefix, int count);
 846
 847 /* Replication */
 848 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 849 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 850 void updateSlavesWaitingBgsave(int bgsaveerr);
 851 void replicationCron(void);
 852
 853 /* Generic persistence functions */
 854 void startLoading(FILE *fp);
 855 void loadingProgress(off_t pos);
 856 void stopLoading(void);
 857
 858 /* RDB persistence */
 859 int rdbLoad(char *filename);
 860 int rdbSaveBackground(char *filename);
 861 void rdbRemoveTempFile(pid_t childpid);
 862 int rdbSave(char *filename);
 863 int rdbSaveObject(FILE *fp, robj *o);
 864 off_t rdbSavedObjectLen(robj *o);
 865 off_t rdbSavedObjectPages(robj *o);
 866 robj *rdbLoadObject(int type, FILE *fp);
 867 void backgroundSaveDoneHandler(int exitcode, int bysignal);
 868 int rdbSaveKeyValuePair(FILE *fp, robj *key, robj *val, time_t expireitme, time_t now);
 869 int rdbLoadType(FILE *fp);
 870 time_t rdbLoadTime(FILE *fp);
 871 robj *rdbLoadStringObject(FILE *fp);
 872 int rdbSaveType(FILE *fp, unsigned char type);
 873 int rdbSaveLen(FILE *fp, uint32_t len);
 874
 875 /* AOF persistence */
 876 void flushAppendOnlyFile(void);
 877 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
 878 void aofRemoveTempFile(pid_t childpid);
 879 int rewriteAppendOnlyFileBackground(void);
 880 int loadAppendOnlyFile(char *filename);
 881 void stopAppendOnly(void);
 882 int startAppendOnly(void);
 883 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
 884
 885 /* Sorted sets data type */
 886
 887 /* Struct to hold a inclusive/exclusive range spec. */
 888 typedef struct {
 889     double min, max;
 890     int minex, maxex; /* are min or max exclusive? */
 891 } zrangespec;
 892
 893 zskiplist *zslCreate(void);
 894 void zslFree(zskiplist *zsl);
 895 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 896 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
 897 int zslDelete(zskiplist *zsl, double score, robj *obj);
 898 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
 899 double zzlGetScore(unsigned char *sptr);
 900 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 901 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
 902 unsigned int zsetLength(robj *zobj);
 903 void zsetConvert(robj *zobj, int encoding);
 904
 905 /* Core functions */
 906 void freeMemoryIfNeeded(void);
 907 int processCommand(redisClient *c);
 908 void setupSignalHandlers(void);
 909 struct redisCommand *lookupCommand(sds name);
 910 struct redisCommand *lookupCommandByCString(char *s);
 911 void call(redisClient *c, struct redisCommand *cmd);
 912 int prepareForShutdown();
 913 void redisLog(int level, const char *fmt, ...);
 914 void usage();
 915 void updateDictResizePolicy(void);
 916 int htNeedsResize(dict *dict);
 917 void oom(const char *msg);
 918 void populateCommandTable(void);
 919 void resetCommandTableStats(void);
 920
 921 /* Set data type */
 922 robj *setTypeCreate(robj *value);
 923 int setTypeAdd(robj *subject, robj *value);
 924 int setTypeRemove(robj *subject, robj *value);
 925 int setTypeIsMember(robj *subject, robj *value);
 926 setTypeIterator *setTypeInitIterator(robj *subject);
 927 void setTypeReleaseIterator(setTypeIterator *si);
 928 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
 929 robj *setTypeNextObject(setTypeIterator *si);
 930 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
 931 unsigned long setTypeSize(robj *subject);
 932 void setTypeConvert(robj *subject, int enc);
 933
 934 /* Hash data type */
 935 void convertToRealHash(robj *o);
 936 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 937 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 938 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
 939 robj *hashTypeGetObject(robj *o, robj *key);
 940 int hashTypeExists(robj *o, robj *key);
 941 int hashTypeSet(robj *o, robj *key, robj *value);
 942 int hashTypeDelete(robj *o, robj *key);
 943 unsigned long hashTypeLength(robj *o);
 944 hashTypeIterator *hashTypeInitIterator(robj *subject);
 945 void hashTypeReleaseIterator(hashTypeIterator *hi);
 946 int hashTypeNext(hashTypeIterator *hi);
 947 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
 948 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 949 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 950
 951 /* Pub / Sub */
 952 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 953 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 954 void freePubsubPattern(void *p);
 955 int listMatchPubsubPattern(void *a, void *b);
 956
 957 /* Configuration */
 958 void loadServerConfig(char *filename);
 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 time_t getExpire(redisDb *db, robj *key);
 967 void setExpire(redisDb *db, robj *key, time_t 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
1003 /* Git SHA1 */
1004 char *redisGitSHA1(void);
1005 char *redisGitDirty(void);
1006
1007 /* Commands prototypes */
1008 void authCommand(redisClient *c);
1009 void pingCommand(redisClient *c);
1010 void echoCommand(redisClient *c);
1011 void setCommand(redisClient *c);
1012 void setnxCommand(redisClient *c);
1013 void setexCommand(redisClient *c);
1014 void getCommand(redisClient *c);
1015 void delCommand(redisClient *c);
1016 void existsCommand(redisClient *c);
1017 void setbitCommand(redisClient *c);
1018 void getbitCommand(redisClient *c);
1019 void setrangeCommand(redisClient *c);
1020 void getrangeCommand(redisClient *c);
1021 void incrCommand(redisClient *c);
1022 void decrCommand(redisClient *c);
1023 void incrbyCommand(redisClient *c);
1024 void decrbyCommand(redisClient *c);
1025 void selectCommand(redisClient *c);
1026 void randomkeyCommand(redisClient *c);
1027 void keysCommand(redisClient *c);
1028 void dbsizeCommand(redisClient *c);
1029 void lastsaveCommand(redisClient *c);
1030 void saveCommand(redisClient *c);
1031 void bgsaveCommand(redisClient *c);
1032 void bgrewriteaofCommand(redisClient *c);
1033 void shutdownCommand(redisClient *c);
1034 void moveCommand(redisClient *c);
1035 void renameCommand(redisClient *c);
1036 void renamenxCommand(redisClient *c);
1037 void lpushCommand(redisClient *c);
1038 void rpushCommand(redisClient *c);
1039 void lpushxCommand(redisClient *c);
1040 void rpushxCommand(redisClient *c);
1041 void linsertCommand(redisClient *c);
1042 void lpopCommand(redisClient *c);
1043 void rpopCommand(redisClient *c);
1044 void llenCommand(redisClient *c);
1045 void lindexCommand(redisClient *c);
1046 void lrangeCommand(redisClient *c);
1047 void ltrimCommand(redisClient *c);
1048 void typeCommand(redisClient *c);
1049 void lsetCommand(redisClient *c);
1050 void saddCommand(redisClient *c);
1051 void sremCommand(redisClient *c);
1052 void smoveCommand(redisClient *c);
1053 void sismemberCommand(redisClient *c);
1054 void scardCommand(redisClient *c);
1055 void spopCommand(redisClient *c);
1056 void srandmemberCommand(redisClient *c);
1057 void sinterCommand(redisClient *c);
1058 void sinterstoreCommand(redisClient *c);
1059 void sunionCommand(redisClient *c);
1060 void sunionstoreCommand(redisClient *c);
1061 void sdiffCommand(redisClient *c);
1062 void sdiffstoreCommand(redisClient *c);
1063 void syncCommand(redisClient *c);
1064 void flushdbCommand(redisClient *c);
1065 void flushallCommand(redisClient *c);
1066 void sortCommand(redisClient *c);
1067 void lremCommand(redisClient *c);
1068 void rpoplpushCommand(redisClient *c);
1069 void infoCommand(redisClient *c);
1070 void mgetCommand(redisClient *c);
1071 void monitorCommand(redisClient *c);
1072 void expireCommand(redisClient *c);
1073 void expireatCommand(redisClient *c);
1074 void getsetCommand(redisClient *c);
1075 void ttlCommand(redisClient *c);
1076 void persistCommand(redisClient *c);
1077 void slaveofCommand(redisClient *c);
1078 void debugCommand(redisClient *c);
1079 void msetCommand(redisClient *c);
1080 void msetnxCommand(redisClient *c);
1081 void zaddCommand(redisClient *c);
1082 void zincrbyCommand(redisClient *c);
1083 void zrangeCommand(redisClient *c);
1084 void zrangebyscoreCommand(redisClient *c);
1085 void zrevrangebyscoreCommand(redisClient *c);
1086 void zcountCommand(redisClient *c);
1087 void zrevrangeCommand(redisClient *c);
1088 void zcardCommand(redisClient *c);
1089 void zremCommand(redisClient *c);
1090 void zscoreCommand(redisClient *c);
1091 void zremrangebyscoreCommand(redisClient *c);
1092 void multiCommand(redisClient *c);
1093 void execCommand(redisClient *c);
1094 void discardCommand(redisClient *c);
1095 void blpopCommand(redisClient *c);
1096 void brpopCommand(redisClient *c);
1097 void brpoplpushCommand(redisClient *c);
1098 void appendCommand(redisClient *c);
1099 void strlenCommand(redisClient *c);
1100 void zrankCommand(redisClient *c);
1101 void zrevrankCommand(redisClient *c);
1102 void hsetCommand(redisClient *c);
1103 void hsetnxCommand(redisClient *c);
1104 void hgetCommand(redisClient *c);
1105 void hmsetCommand(redisClient *c);
1106 void hmgetCommand(redisClient *c);
1107 void hdelCommand(redisClient *c);
1108 void hlenCommand(redisClient *c);
1109 void zremrangebyrankCommand(redisClient *c);
1110 void zunionstoreCommand(redisClient *c);
1111 void zinterstoreCommand(redisClient *c);
1112 void hkeysCommand(redisClient *c);
1113 void hvalsCommand(redisClient *c);
1114 void hgetallCommand(redisClient *c);
1115 void hexistsCommand(redisClient *c);
1116 void configCommand(redisClient *c);
1117 void hincrbyCommand(redisClient *c);
1118 void subscribeCommand(redisClient *c);
1119 void unsubscribeCommand(redisClient *c);
1120 void psubscribeCommand(redisClient *c);
1121 void punsubscribeCommand(redisClient *c);
1122 void publishCommand(redisClient *c);
1123 void watchCommand(redisClient *c);
1124 void unwatchCommand(redisClient *c);
1125 void clusterCommand(redisClient *c);
1126 void restoreCommand(redisClient *c);
1127 void migrateCommand(redisClient *c);
1128 void dumpCommand(redisClient *c);
1129 void objectCommand(redisClient *c);
1130 void clientCommand(redisClient *c);
1131
1132 #if defined(__GNUC__)
1133 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1134 void free(void *ptr) __attribute__ ((deprecated));
1135 void *malloc(size_t size) __attribute__ ((deprecated));
1136 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1137 #endif
1138
1139 #endif