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
  22 #include "ae.h"     /* Event driven programming library */
  23 #include "sds.h"    /* Dynamic safe strings */
  24 #include "dict.h"   /* Hash tables */
  25 #include "adlist.h" /* Linked lists */
  26 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
  27 #include "anet.h"   /* Networking the easy way */
  28 #include "zipmap.h" /* Compact string -> string data structure */
  29 #include "ziplist.h" /* Compact list data structure */
  30 #include "intset.h" /* Compact integer set structure */
  31 #include "version.h"
  32
  33 /* Error codes */
  34 #define REDIS_OK                0
  35 #define REDIS_ERR               -1
  36
  37 /* Static server configuration */
  38 #define REDIS_SERVERPORT        6379    /* TCP port */
  39 #define REDIS_MAXIDLETIME       (60*5)  /* default client timeout */
  40 #define REDIS_IOBUF_LEN         1024
  41 #define REDIS_LOADBUF_LEN       1024
  42 #define REDIS_STATIC_ARGS       8
  43 #define REDIS_DEFAULT_DBNUM     16
  44 #define REDIS_CONFIGLINE_MAX    1024
  45 #define REDIS_MAX_SYNC_TIME     60      /* Slave can't take more to sync */
  46 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
  47 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
  48 #define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */
  49 #define REDIS_SHARED_INTEGERS 10000
  50 #define REDIS_REPLY_CHUNK_BYTES (5*1500) /* 5 TCP packets with default MTU */
  51 #define REDIS_MAX_LOGMSG_LEN    1024 /* Default maximum length of syslog messages */
  52
  53 /* Hash table parameters */
  54 #define REDIS_HT_MINFILL        10      /* Minimal hash table fill 10% */
  55
  56 /* Command flags:
  57  *   REDIS_CMD_DENYOOM:
  58  *     Commands marked with this flag will return an error when 'maxmemory' is
  59  *     set and the server is using more than 'maxmemory' bytes of memory.
  60  *     In short: commands with this flag are denied on low memory conditions.
  61  *   REDIS_CMD_FORCE_REPLICATION:
  62  *     Force replication even if dirty is 0. */
  63 #define REDIS_CMD_DENYOOM 4
  64 #define REDIS_CMD_FORCE_REPLICATION 8
  65
  66 /* Object types */
  67 #define REDIS_STRING 0
  68 #define REDIS_LIST 1
  69 #define REDIS_SET 2
  70 #define REDIS_ZSET 3
  71 #define REDIS_HASH 4
  72 #define REDIS_VMPOINTER 8
  73
  74 /* Object types only used for persistence in .rdb files */
  75 #define REDIS_HASH_ZIPMAP 9
  76 #define REDIS_LIST_ZIPLIST 10
  77 #define REDIS_SET_INTSET 11
  78 #define REDIS_ZSET_ZIPLIST 12
  79
  80 /* Objects encoding. Some kind of objects like Strings and Hashes can be
  81  * internally represented in multiple ways. The 'encoding' field of the object
  82  * is set to one of this fields for this object. */
  83 #define REDIS_ENCODING_RAW 0     /* Raw representation */
  84 #define REDIS_ENCODING_INT 1     /* Encoded as integer */
  85 #define REDIS_ENCODING_HT 2      /* Encoded as hash table */
  86 #define REDIS_ENCODING_ZIPMAP 3  /* Encoded as zipmap */
  87 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
  88 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
  89 #define REDIS_ENCODING_INTSET 6  /* Encoded as intset */
  90
  91 /* Object types only used for dumping to disk */
  92 #define REDIS_EXPIRETIME 253
  93 #define REDIS_SELECTDB 254
  94 #define REDIS_EOF 255
  95
  96 /* Defines related to the dump file format. To store 32 bits lengths for short
  97  * keys requires a lot of space, so we check the most significant 2 bits of
  98  * the first byte to interpreter the length:
  99  *
 100  * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
 101  * 01|000000 00000000 =>  01, the len is 14 byes, 6 bits + 8 bits of next byte
 102  * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
 103  * 11|000000 this means: specially encoded object will follow. The six bits
 104  *           number specify the kind of object that follows.
 105  *           See the REDIS_RDB_ENC_* defines.
 106  *
 107  * Lenghts up to 63 are stored using a single byte, most DB keys, and may
 108  * values, will fit inside. */
 109 #define REDIS_RDB_6BITLEN 0
 110 #define REDIS_RDB_14BITLEN 1
 111 #define REDIS_RDB_32BITLEN 2
 112 #define REDIS_RDB_ENCVAL 3
 113 #define REDIS_RDB_LENERR UINT_MAX
 114
 115 /* When a length of a string object stored on disk has the first two bits
 116  * set, the remaining two bits specify a special encoding for the object
 117  * accordingly to the following defines: */
 118 #define REDIS_RDB_ENC_INT8 0        /* 8 bit signed integer */
 119 #define REDIS_RDB_ENC_INT16 1       /* 16 bit signed integer */
 120 #define REDIS_RDB_ENC_INT32 2       /* 32 bit signed integer */
 121 #define REDIS_RDB_ENC_LZF 3         /* string compressed with FASTLZ */
 122
 123 /* Scheduled IO opeations flags. */
 124 #define REDIS_IO_LOAD 1
 125 #define REDIS_IO_SAVE 2
 126 #define REDIS_IO_LOADINPROG 4
 127 #define REDIS_IO_SAVEINPROG 8
 128
 129 /* Generic IO flags */
 130 #define REDIS_IO_ONLYLOADS 1
 131 #define REDIS_IO_ASAP 2
 132
 133 #define REDIS_MAX_COMPLETED_JOBS_PROCESSED 1
 134 #define REDIS_THREAD_STACK_SIZE (1024*1024*4)
 135
 136 /* Client flags */
 137 #define REDIS_SLAVE 1       /* This client is a slave server */
 138 #define REDIS_MASTER 2      /* This client is a master server */
 139 #define REDIS_MONITOR 4     /* This client is a slave monitor, see MONITOR */
 140 #define REDIS_MULTI 8       /* This client is in a MULTI context */
 141 #define REDIS_BLOCKED 16    /* The client is waiting in a blocking operation */
 142 #define REDIS_IO_WAIT 32    /* The client is waiting for Virtual Memory I/O */
 143 #define REDIS_DIRTY_CAS 64  /* Watched keys modified. EXEC will fail. */
 144 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
 145 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
 146                                server.unblocked_clients */
 147
 148 /* Client request types */
 149 #define REDIS_REQ_INLINE 1
 150 #define REDIS_REQ_MULTIBULK 2
 151
 152 /* Slave replication state - slave side */
 153 #define REDIS_REPL_NONE 0   /* No active replication */
 154 #define REDIS_REPL_CONNECT 1    /* Must connect to master */
 155 #define REDIS_REPL_TRANSFER 2    /* Receiving .rdb from master */
 156 #define REDIS_REPL_CONNECTED 3  /* Connected to master */
 157
 158 /* Slave replication state - from the point of view of master
 159  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 160  * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
 161  * to start the next background saving in order to send updates to it. */
 162 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
 163 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
 164 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
 165 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
 166
 167 /* List related stuff */
 168 #define REDIS_HEAD 0
 169 #define REDIS_TAIL 1
 170
 171 /* Sort operations */
 172 #define REDIS_SORT_GET 0
 173 #define REDIS_SORT_ASC 1
 174 #define REDIS_SORT_DESC 2
 175 #define REDIS_SORTKEY_MAX 1024
 176
 177 /* Log levels */
 178 #define REDIS_DEBUG 0
 179 #define REDIS_VERBOSE 1
 180 #define REDIS_NOTICE 2
 181 #define REDIS_WARNING 3
 182
 183 /* Anti-warning macro... */
 184 #define REDIS_NOTUSED(V) ((void) V)
 185
 186 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
 187 #define ZSKIPLIST_P 0.25      /* Skiplist P = 1/4 */
 188
 189 /* Append only defines */
 190 #define APPENDFSYNC_NO 0
 191 #define APPENDFSYNC_ALWAYS 1
 192 #define APPENDFSYNC_EVERYSEC 2
 193
 194 /* Zip structure related defaults */
 195 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
 196 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
 197 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
 198 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
 199 #define REDIS_SET_MAX_INTSET_ENTRIES 512
 200 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
 201 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
 202
 203 /* Sets operations codes */
 204 #define REDIS_OP_UNION 0
 205 #define REDIS_OP_DIFF 1
 206 #define REDIS_OP_INTER 2
 207
 208 /* Redis maxmemory strategies */
 209 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
 210 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
 211 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 212 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 213 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 214 #define REDIS_MAXMEMORY_NO_EVICTION 5
 215
 216 /* Diskstore background saving thread states */
 217 #define REDIS_BGSAVE_THREAD_UNACTIVE 0
 218 #define REDIS_BGSAVE_THREAD_ACTIVE 1
 219 #define REDIS_BGSAVE_THREAD_DONE_OK 2
 220 #define REDIS_BGSAVE_THREAD_DONE_ERR 3
 221
 222 /* We can print the stacktrace, so our assert is defined this way: */
 223 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 224 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
 225 void _redisAssert(char *estr, char *file, int line);
 226 void _redisPanic(char *msg, char *file, int line);
 227
 228 /*-----------------------------------------------------------------------------
 229  * Data types
 230  *----------------------------------------------------------------------------*/
 231
 232 /* A redis object, that is a type able to hold a string / list / set */
 233
 234 /* The actual Redis Object */
 235 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
 236 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
 237 typedef struct redisObject {
 238     unsigned type:4;
 239     unsigned notused:2;     /* Not used */
 240     unsigned encoding:4;
 241     unsigned lru:22;        /* lru time (relative to server.lruclock) */
 242     int refcount;
 243     void *ptr;
 244     /* VM fields are only allocated if VM is active, otherwise the
 245      * object allocation function will just allocate
 246      * sizeof(redisObjct) minus sizeof(redisObjectVM), so using
 247      * Redis without VM active will not have any overhead. */
 248 } robj;
 249
 250 /* The VM pointer structure - identifies an object in the swap file.
 251  *
 252  * This object is stored in place of the value
 253  * object in the main key->value hash table representing a database.
 254  * Note that the first fields (type, storage) are the same as the redisObject
 255  * structure so that vmPointer strucuters can be accessed even when casted
 256  * as redisObject structures.
 257  *
 258  * This is useful as we don't know if a value object is or not on disk, but we
 259  * are always able to read obj->storage to check this. For vmPointer
 260  * structures "type" is set to REDIS_VMPOINTER (even if without this field
 261  * is still possible to check the kind of object from the value of 'storage').*/
 262 typedef struct vmPointer {
 263     unsigned type:4;
 264     unsigned storage:2; /* REDIS_VM_SWAPPED or REDIS_VM_LOADING */
 265     unsigned notused:26;
 266     unsigned int vtype; /* type of the object stored in the swap file */
 267     off_t page;         /* the page at witch the object is stored on disk */
 268     off_t usedpages;    /* number of pages used on disk */
 269 } vmpointer;
 270
 271 /* Macro used to initalize a Redis object allocated on the stack.
 272  * Note that this macro is taken near the structure definition to make sure
 273  * we'll update it when the structure is changed, to avoid bugs like
 274  * bug #85 introduced exactly in this way. */
 275 #define initStaticStringObject(_var,_ptr) do { \
 276     _var.refcount = 1; \
 277     _var.type = REDIS_STRING; \
 278     _var.encoding = REDIS_ENCODING_RAW; \
 279     _var.ptr = _ptr; \
 280 } while(0);
 281
 282 typedef struct redisDb {
 283     dict *dict;                 /* The keyspace for this DB */
 284     dict *expires;              /* Timeout of keys with a timeout set */
 285     dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */
 286     dict *io_keys;              /* Keys with clients waiting for DS I/O */
 287     dict *io_negcache;          /* Negative caching for disk store */
 288     dict *io_queued;            /* Queued IO operations hash table */
 289     dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */
 290     int id;
 291 } redisDb;
 292
 293 /* Client MULTI/EXEC state */
 294 typedef struct multiCmd {
 295     robj **argv;
 296     int argc;
 297     struct redisCommand *cmd;
 298 } multiCmd;
 299
 300 typedef struct multiState {
 301     multiCmd *commands;     /* Array of MULTI commands */
 302     int count;              /* Total number of MULTI commands */
 303 } multiState;
 304
 305 typedef struct blockingState {
 306     robj **keys;            /* The key we are waiting to terminate a blocking
 307                              * operation such as BLPOP. Otherwise NULL. */
 308     int count;              /* Number of blocking keys */
 309     time_t timeout;         /* Blocking operation timeout. If UNIX current time
 310                              * is >= timeout then the operation timed out. */
 311     robj *target;           /* The key that should receive the element,
 312                              * for BRPOPLPUSH. */
 313 } blockingState;
 314
 315 /* With multiplexing we need to take per-clinet state.
 316  * Clients are taken in a liked list. */
 317 typedef struct redisClient {
 318     int fd;
 319     redisDb *db;
 320     int dictid;
 321     sds querybuf;
 322     int argc;
 323     robj **argv;
 324     int reqtype;
 325     int multibulklen;       /* number of multi bulk arguments left to read */
 326     long bulklen;           /* length of bulk argument in multi bulk request */
 327     list *reply;
 328     int sentlen;
 329     time_t lastinteraction; /* time of the last interaction, used for timeout */
 330     int flags;              /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
 331     int slaveseldb;         /* slave selected db, if this client is a slave */
 332     int authenticated;      /* when requirepass is non-NULL */
 333     int replstate;          /* replication state if this is a slave */
 334     int repldbfd;           /* replication DB file descriptor */
 335     long repldboff;         /* replication DB file offset */
 336     off_t repldbsize;       /* replication DB file size */
 337     multiState mstate;      /* MULTI/EXEC state */
 338     blockingState bpop;   /* blocking state */
 339     list *io_keys;          /* Keys this client is waiting to be loaded from the
 340                              * swap file in order to continue. */
 341     list *watched_keys;     /* Keys WATCHED for MULTI/EXEC CAS */
 342     dict *pubsub_channels;  /* channels a client is interested in (SUBSCRIBE) */
 343     list *pubsub_patterns;  /* patterns a client is interested in (SUBSCRIBE) */
 344
 345     /* Response buffer */
 346     int bufpos;
 347     char buf[REDIS_REPLY_CHUNK_BYTES];
 348 } redisClient;
 349
 350 struct saveparam {
 351     time_t seconds;
 352     int changes;
 353 };
 354
 355 struct sharedObjectsStruct {
 356     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
 357     *colon, *nullbulk, *nullmultibulk, *queued,
 358     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
 359     *outofrangeerr, *loadingerr, *plus,
 360     *select0, *select1, *select2, *select3, *select4,
 361     *select5, *select6, *select7, *select8, *select9,
 362     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
 363     *mbulk4, *psubscribebulk, *punsubscribebulk,
 364     *integers[REDIS_SHARED_INTEGERS];
 365 };
 366
 367 /* Global server state structure */
 368 struct redisServer {
 369     /* General */
 370     pthread_t mainthread;
 371     redisDb *db;
 372     dict *commands;             /* Command table hahs table */
 373     aeEventLoop *el;
 374     /* Networking */
 375     int port;
 376     char *bindaddr;
 377     char *unixsocket;
 378     int ipfd;
 379     int sofd;
 380     list *clients;
 381     list *slaves, *monitors;
 382     char neterr[ANET_ERR_LEN];
 383     /* RDB / AOF loading information */
 384     int loading;
 385     off_t loading_total_bytes;
 386     off_t loading_loaded_bytes;
 387     time_t loading_start_time;
 388     /* Fast pointers to often looked up command */
 389     struct redisCommand *delCommand, *multiCommand;
 390     int cronloops;              /* number of times the cron function run */
 391     time_t lastsave;                /* Unix time of last save succeeede */
 392     /* Fields used only for stats */
 393     time_t stat_starttime;          /* server start time */
 394     long long stat_numcommands;     /* number of processed commands */
 395     long long stat_numconnections;  /* number of connections received */
 396     long long stat_expiredkeys;     /* number of expired keys */
 397     long long stat_evictedkeys;     /* number of evicted keys (maxmemory) */
 398     long long stat_keyspace_hits;   /* number of successful lookups of keys */
 399     long long stat_keyspace_misses; /* number of failed lookups of keys */
 400     /* Configuration */
 401     int verbosity;
 402     int maxidletime;
 403     int dbnum;
 404     int daemonize;
 405     int appendonly;
 406     int appendfsync;
 407     int no_appendfsync_on_rewrite;
 408     int shutdown_asap;
 409     int activerehashing;
 410     char *requirepass;
 411     /* Persistence */
 412     long long dirty;            /* changes to DB from the last save */
 413     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
 414     time_t lastfsync;
 415     int appendfd;
 416     int appendseldb;
 417     char *pidfile;
 418     pid_t bgsavechildpid;
 419     pid_t bgrewritechildpid;
 420     int bgsavethread_state;
 421     pthread_mutex_t bgsavethread_mutex;
 422     pthread_t bgsavethread;
 423     sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
 424     sds aofbuf;       /* AOF buffer, written before entering the event loop */
 425     struct saveparam *saveparams;
 426     int saveparamslen;
 427     char *dbfilename;
 428     int rdbcompression;
 429     char *appendfilename;
 430     /* Logging */
 431     char *logfile;
 432     int syslog_enabled;
 433     char *syslog_ident;
 434     int syslog_facility;
 435     /* Replication related */
 436     int isslave;
 437     /* Slave specific fields */
 438     char *masterauth;
 439     char *masterhost;
 440     int masterport;
 441     redisClient *master;    /* client that is master for this slave */
 442     int replstate;          /* replication status if the instance is a slave */
 443     off_t repl_transfer_left;  /* bytes left reading .rdb  */
 444     int repl_transfer_s;    /* slave -> master SYNC socket */
 445     int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
 446     char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
 447     time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
 448     int repl_serve_stale_data; /* Serve stale data when link is down? */
 449     /* Limits */
 450     unsigned int maxclients;
 451     unsigned long long maxmemory;
 452     int maxmemory_policy;
 453     int maxmemory_samples;
 454     /* Blocked clients */
 455     unsigned int bpop_blocked_clients;
 456     unsigned int cache_blocked_clients;
 457     list *unblocked_clients; /* list of clients to unblock before next loop */
 458     list *cache_io_queue;    /* IO operations queue */
 459     int cache_flush_delay;   /* seconds to wait before flushing keys */
 460     /* Sort parameters - qsort_r() is only available under BSD so we
 461      * have to take this state global, in order to pass it to sortCompare() */
 462     int sort_desc;
 463     int sort_alpha;
 464     int sort_bypattern;
 465     /* Virtual memory configuration */
 466     int ds_enabled; /* backend disk in redis.conf */
 467     char *ds_path;  /* location of the disk store on disk */
 468     unsigned long long cache_max_memory;
 469     /* Zip structure config */
 470     size_t hash_max_zipmap_entries;
 471     size_t hash_max_zipmap_value;
 472     size_t list_max_ziplist_entries;
 473     size_t list_max_ziplist_value;
 474     size_t set_max_intset_entries;
 475     size_t zset_max_ziplist_entries;
 476     size_t zset_max_ziplist_value;
 477     time_t unixtime;    /* Unix time sampled every second. */
 478     /* Virtual memory I/O threads stuff */
 479     /* An I/O thread process an element taken from the io_jobs queue and
 480      * put the result of the operation in the io_done list. While the
 481      * job is being processed, it's put on io_processing queue. */
 482     list *io_newjobs; /* List of VM I/O jobs yet to be processed */
 483     list *io_processing; /* List of VM I/O jobs being processed */
 484     list *io_processed; /* List of VM I/O jobs already processed */
 485     list *io_ready_clients; /* Clients ready to be unblocked. All keys loaded */
 486     pthread_mutex_t io_mutex; /* lock to access io_jobs/io_done/io_thread_job */
 487     pthread_cond_t io_condvar; /* I/O threads conditional variable */
 488     pthread_attr_t io_threads_attr; /* attributes for threads creation */
 489     int io_active_threads; /* Number of running I/O threads */
 490     int vm_max_threads; /* Max number of I/O threads running at the same time */
 491     /* Our main thread is blocked on the event loop, locking for sockets ready
 492      * to be read or written, so when a threaded I/O operation is ready to be
 493      * processed by the main thread, the I/O thread will use a unix pipe to
 494      * awake the main thread. The followings are the two pipe FDs. */
 495     int io_ready_pipe_read;
 496     int io_ready_pipe_write;
 497     /* Virtual memory stats */
 498     unsigned long long vm_stats_used_pages;
 499     unsigned long long vm_stats_swapped_objects;
 500     unsigned long long vm_stats_swapouts;
 501     unsigned long long vm_stats_swapins;
 502     /* Pubsub */
 503     dict *pubsub_channels; /* Map channels to list of subscribed clients */
 504     list *pubsub_patterns; /* A list of pubsub_patterns */
 505     /* Misc */
 506     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
 507     unsigned lruclock_padding:10;
 508 };
 509
 510 typedef struct pubsubPattern {
 511     redisClient *client;
 512     robj *pattern;
 513 } pubsubPattern;
 514
 515 typedef void redisCommandProc(redisClient *c);
 516 typedef void redisVmPreloadProc(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
 517 struct redisCommand {
 518     char *name;
 519     redisCommandProc *proc;
 520     int arity;
 521     int flags;
 522     /* Use a function to determine which keys need to be loaded
 523      * in the background prior to executing this command. Takes precedence
 524      * over vm_firstkey and others, ignored when NULL */
 525     redisVmPreloadProc *vm_preload_proc;
 526     /* What keys should be loaded in background when calling this command? */
 527     int vm_firstkey; /* The first argument that's a key (0 = no keys) */
 528     int vm_lastkey;  /* THe last argument that's a key */
 529     int vm_keystep;  /* The step between first and last key */
 530     long long microseconds, calls;
 531 };
 532
 533 struct redisFunctionSym {
 534     char *name;
 535     unsigned long pointer;
 536 };
 537
 538 typedef struct _redisSortObject {
 539     robj *obj;
 540     union {
 541         double score;
 542         robj *cmpobj;
 543     } u;
 544 } redisSortObject;
 545
 546 typedef struct _redisSortOperation {
 547     int type;
 548     robj *pattern;
 549 } redisSortOperation;
 550
 551 /* ZSETs use a specialized version of Skiplists */
 552 typedef struct zskiplistNode {
 553     robj *obj;
 554     double score;
 555     struct zskiplistNode *backward;
 556     struct zskiplistLevel {
 557         struct zskiplistNode *forward;
 558         unsigned int span;
 559     } level[];
 560 } zskiplistNode;
 561
 562 typedef struct zskiplist {
 563     struct zskiplistNode *header, *tail;
 564     unsigned long length;
 565     int level;
 566 } zskiplist;
 567
 568 typedef struct zset {
 569     dict *dict;
 570     zskiplist *zsl;
 571 } zset;
 572
 573 /* DIsk store threaded I/O request message */
 574 #define REDIS_IOJOB_LOAD 0
 575 #define REDIS_IOJOB_SAVE 1
 576
 577 typedef struct iojob {
 578     int type;   /* Request type, REDIS_IOJOB_* */
 579     redisDb *db;/* Redis database */
 580     robj *key;  /* This I/O request is about this key */
 581     robj *val;  /* the value to swap for REDIS_IOJOB_SAVE, otherwise this
 582                  * field is populated by the I/O thread for REDIS_IOJOB_LOAD. */
 583     time_t expire; /* Expire time for this key on REDIS_IOJOB_LOAD */
 584 } iojob;
 585
 586 /* IO operations scheduled -- check dscache.c for more info */
 587 typedef struct ioop {
 588     int type;
 589     redisDb *db;
 590     robj *key;
 591     time_t ctime; /* This is the creation time of the entry. */
 592 } ioop;
 593
 594 /* Structure to hold list iteration abstraction. */
 595 typedef struct {
 596     robj *subject;
 597     unsigned char encoding;
 598     unsigned char direction; /* Iteration direction */
 599     unsigned char *zi;
 600     listNode *ln;
 601 } listTypeIterator;
 602
 603 /* Structure for an entry while iterating over a list. */
 604 typedef struct {
 605     listTypeIterator *li;
 606     unsigned char *zi;  /* Entry in ziplist */
 607     listNode *ln;       /* Entry in linked list */
 608 } listTypeEntry;
 609
 610 /* Structure to hold set iteration abstraction. */
 611 typedef struct {
 612     robj *subject;
 613     int encoding;
 614     int ii; /* intset iterator */
 615     dictIterator *di;
 616 } setTypeIterator;
 617
 618 /* Structure to hold hash iteration abstration. Note that iteration over
 619  * hashes involves both fields and values. Because it is possible that
 620  * not both are required, store pointers in the iterator to avoid
 621  * unnecessary memory allocation for fields/values. */
 622 typedef struct {
 623     int encoding;
 624     unsigned char *zi;
 625     unsigned char *zk, *zv;
 626     unsigned int zklen, zvlen;
 627
 628     dictIterator *di;
 629     dictEntry *de;
 630 } hashTypeIterator;
 631
 632 #define REDIS_HASH_KEY 1
 633 #define REDIS_HASH_VALUE 2
 634
 635 /*-----------------------------------------------------------------------------
 636  * Extern declarations
 637  *----------------------------------------------------------------------------*/
 638
 639 extern struct redisServer server;
 640 extern struct sharedObjectsStruct shared;
 641 extern dictType setDictType;
 642 extern dictType zsetDictType;
 643 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
 644 dictType hashDictType;
 645
 646 /*-----------------------------------------------------------------------------
 647  * Functions prototypes
 648  *----------------------------------------------------------------------------*/
 649
 650 /* Utils */
 651 long long ustime(void);
 652
 653 /* networking.c -- Networking and Client related operations */
 654 redisClient *createClient(int fd);
 655 void closeTimedoutClients(void);
 656 void freeClient(redisClient *c);
 657 void resetClient(redisClient *c);
 658 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
 659 void addReply(redisClient *c, robj *obj);
 660 void *addDeferredMultiBulkLength(redisClient *c);
 661 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
 662 void addReplySds(redisClient *c, sds s);
 663 void processInputBuffer(redisClient *c);
 664 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 665 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 666 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 667 void addReplyBulk(redisClient *c, robj *obj);
 668 void addReplyBulkCString(redisClient *c, char *s);
 669 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
 670 void addReplyBulkLongLong(redisClient *c, long long ll);
 671 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 672 void addReply(redisClient *c, robj *obj);
 673 void addReplySds(redisClient *c, sds s);
 674 void addReplyError(redisClient *c, char *err);
 675 void addReplyStatus(redisClient *c, char *status);
 676 void addReplyDouble(redisClient *c, double d);
 677 void addReplyLongLong(redisClient *c, long long ll);
 678 void addReplyMultiBulkLen(redisClient *c, long length);
 679 void *dupClientReplyValue(void *o);
 680 void getClientsMaxBuffers(unsigned long *longest_output_list,
 681                           unsigned long *biggest_input_buffer);
 682
 683 #ifdef __GNUC__
 684 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
 685     __attribute__((format(printf, 2, 3)));
 686 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
 687     __attribute__((format(printf, 2, 3)));
 688 #else
 689 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
 690 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
 691 #endif
 692
 693 /* List data type */
 694 void listTypeTryConversion(robj *subject, robj *value);
 695 void listTypePush(robj *subject, robj *value, int where);
 696 robj *listTypePop(robj *subject, int where);
 697 unsigned long listTypeLength(robj *subject);
 698 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
 699 void listTypeReleaseIterator(listTypeIterator *li);
 700 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
 701 robj *listTypeGet(listTypeEntry *entry);
 702 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
 703 int listTypeEqual(listTypeEntry *entry, robj *o);
 704 void listTypeDelete(listTypeEntry *entry);
 705 void listTypeConvert(robj *subject, int enc);
 706 void unblockClientWaitingData(redisClient *c);
 707 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
 708 void popGenericCommand(redisClient *c, int where);
 709
 710 /* MULTI/EXEC/WATCH... */
 711 void unwatchAllKeys(redisClient *c);
 712 void initClientMultiState(redisClient *c);
 713 void freeClientMultiState(redisClient *c);
 714 void queueMultiCommand(redisClient *c, struct redisCommand *cmd);
 715 void touchWatchedKey(redisDb *db, robj *key);
 716 void touchWatchedKeysOnFlush(int dbid);
 717
 718 /* Redis object implementation */
 719 void decrRefCount(void *o);
 720 void incrRefCount(robj *o);
 721 void freeStringObject(robj *o);
 722 void freeListObject(robj *o);
 723 void freeSetObject(robj *o);
 724 void freeZsetObject(robj *o);
 725 void freeHashObject(robj *o);
 726 robj *createObject(int type, void *ptr);
 727 robj *createStringObject(char *ptr, size_t len);
 728 robj *dupStringObject(robj *o);
 729 robj *tryObjectEncoding(robj *o);
 730 robj *getDecodedObject(robj *o);
 731 size_t stringObjectLen(robj *o);
 732 robj *createStringObjectFromLongLong(long long value);
 733 robj *createListObject(void);
 734 robj *createZiplistObject(void);
 735 robj *createSetObject(void);
 736 robj *createIntsetObject(void);
 737 robj *createHashObject(void);
 738 robj *createZsetObject(void);
 739 robj *createZsetZiplistObject(void);
 740 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
 741 int checkType(redisClient *c, robj *o, int type);
 742 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
 743 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
 744 int getLongLongFromObject(robj *o, long long *target);
 745 char *strEncoding(int encoding);
 746 int compareStringObjects(robj *a, robj *b);
 747 int equalStringObjects(robj *a, robj *b);
 748 unsigned long estimateObjectIdleTime(robj *o);
 749
 750 /* Synchronous I/O with timeout */
 751 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
 752 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
 753 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
 754 int fwriteBulkString(FILE *fp, char *s, unsigned long len);
 755 int fwriteBulkDouble(FILE *fp, double d);
 756 int fwriteBulkLongLong(FILE *fp, long long l);
 757 int fwriteBulkObject(FILE *fp, robj *obj);
 758
 759 /* Replication */
 760 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 761 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 762 int syncWithMaster(void);
 763 void updateSlavesWaitingBgsave(int bgsaveerr);
 764 void replicationCron(void);
 765
 766 /* Generic persistence functions */
 767 void startLoading(FILE *fp);
 768 void loadingProgress(off_t pos);
 769 void stopLoading(void);
 770
 771 /* RDB persistence */
 772 int rdbLoad(char *filename);
 773 int rdbSaveBackground(char *filename);
 774 void rdbRemoveTempFile(pid_t childpid);
 775 int rdbSave(char *filename);
 776 int rdbSaveObject(FILE *fp, robj *o);
 777 off_t rdbSavedObjectLen(robj *o);
 778 off_t rdbSavedObjectPages(robj *o);
 779 robj *rdbLoadObject(int type, FILE *fp);
 780 void backgroundSaveDoneHandler(int exitcode, int bysignal);
 781 int rdbSaveKeyValuePair(FILE *fp, robj *key, robj *val, time_t expireitme, time_t now);
 782 int rdbLoadType(FILE *fp);
 783 time_t rdbLoadTime(FILE *fp);
 784 robj *rdbLoadStringObject(FILE *fp);
 785 int rdbSaveType(FILE *fp, unsigned char type);
 786 int rdbSaveLen(FILE *fp, uint32_t len);
 787
 788 /* AOF persistence */
 789 void flushAppendOnlyFile(void);
 790 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
 791 void aofRemoveTempFile(pid_t childpid);
 792 int rewriteAppendOnlyFileBackground(void);
 793 int loadAppendOnlyFile(char *filename);
 794 void stopAppendOnly(void);
 795 int startAppendOnly(void);
 796 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
 797
 798 /* Sorted sets data type */
 799 zskiplist *zslCreate(void);
 800 void zslFree(zskiplist *zsl);
 801 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 802
 803 /* Core functions */
 804 void freeMemoryIfNeeded(void);
 805 int processCommand(redisClient *c);
 806 void setupSignalHandlers(void);
 807 struct redisCommand *lookupCommand(sds name);
 808 struct redisCommand *lookupCommandByCString(char *s);
 809 void call(redisClient *c, struct redisCommand *cmd);
 810 int prepareForShutdown();
 811 void redisLog(int level, const char *fmt, ...);
 812 void usage();
 813 void updateDictResizePolicy(void);
 814 int htNeedsResize(dict *dict);
 815 void oom(const char *msg);
 816 void populateCommandTable(void);
 817 void resetCommandTableStats(void);
 818
 819 /* Disk store */
 820 int dsOpen(void);
 821 int dsClose(void);
 822 int dsSet(redisDb *db, robj *key, robj *val, time_t expire);
 823 robj *dsGet(redisDb *db, robj *key, time_t *expire);
 824 int dsDel(redisDb *db, robj *key);
 825 int dsExists(redisDb *db, robj *key);
 826 void dsFlushDb(int dbid);
 827 int dsRdbSaveBackground(char *filename);
 828 int dsRdbSave(char *filename);
 829
 830 /* Disk Store Cache */
 831 void dsInit(void);
 832 void vmThreadedIOCompletedJob(aeEventLoop *el, int fd, void *privdata, int mask);
 833 void lockThreadedIO(void);
 834 void unlockThreadedIO(void);
 835 void freeIOJob(iojob *j);
 836 void queueIOJob(iojob *j);
 837 void waitEmptyIOJobsQueue(void);
 838 void processAllPendingIOJobs(void);
 839 void zunionInterBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
 840 void execBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv);
 841 int blockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd);
 842 int dontWaitForSwappedKey(redisClient *c, robj *key);
 843 void handleClientsBlockedOnSwappedKey(redisDb *db, robj *key);
 844 int cacheFreeOneEntry(void);
 845 void cacheScheduleIOAddFlag(redisDb *db, robj *key, long flag);
 846 void cacheScheduleIODelFlag(redisDb *db, robj *key, long flag);
 847 int cacheScheduleIOGetFlags(redisDb *db, robj *key);
 848 void cacheScheduleIO(redisDb *db, robj *key, int type);
 849 void cacheCron(void);
 850 int cacheKeyMayExist(redisDb *db, robj *key);
 851 void cacheSetKeyMayExist(redisDb *db, robj *key);
 852 void cacheSetKeyDoesNotExist(redisDb *db, robj *key);
 853 void cacheForcePointInTime(void);
 854
 855 /* Set data type */
 856 robj *setTypeCreate(robj *value);
 857 int setTypeAdd(robj *subject, robj *value);
 858 int setTypeRemove(robj *subject, robj *value);
 859 int setTypeIsMember(robj *subject, robj *value);
 860 setTypeIterator *setTypeInitIterator(robj *subject);
 861 void setTypeReleaseIterator(setTypeIterator *si);
 862 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
 863 robj *setTypeNextObject(setTypeIterator *si);
 864 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
 865 unsigned long setTypeSize(robj *subject);
 866 void setTypeConvert(robj *subject, int enc);
 867
 868 /* Hash data type */
 869 void convertToRealHash(robj *o);
 870 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
 871 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
 872 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
 873 robj *hashTypeGetObject(robj *o, robj *key);
 874 int hashTypeExists(robj *o, robj *key);
 875 int hashTypeSet(robj *o, robj *key, robj *value);
 876 int hashTypeDelete(robj *o, robj *key);
 877 unsigned long hashTypeLength(robj *o);
 878 hashTypeIterator *hashTypeInitIterator(robj *subject);
 879 void hashTypeReleaseIterator(hashTypeIterator *hi);
 880 int hashTypeNext(hashTypeIterator *hi);
 881 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
 882 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
 883 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 884
 885 /* Pub / Sub */
 886 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
 887 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
 888 void freePubsubPattern(void *p);
 889 int listMatchPubsubPattern(void *a, void *b);
 890
 891 /* Utility functions */
 892 int stringmatchlen(const char *pattern, int patternLen,
 893         const char *string, int stringLen, int nocase);
 894 int stringmatch(const char *pattern, const char *string, int nocase);
 895 long long memtoll(const char *p, int *err);
 896 int ll2string(char *s, size_t len, long long value);
 897 int d2string(char *s, size_t len, double value);
 898 int isStringRepresentableAsLong(sds s, long *longval);
 899 int isStringRepresentableAsLongLong(sds s, long long *longval);
 900 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
 901
 902 /* Configuration */
 903 void loadServerConfig(char *filename);
 904 void appendServerSaveParams(time_t seconds, int changes);
 905 void resetServerSaveParams();
 906
 907 /* db.c -- Keyspace access API */
 908 int removeExpire(redisDb *db, robj *key);
 909 void propagateExpire(redisDb *db, robj *key);
 910 int expireIfNeeded(redisDb *db, robj *key);
 911 time_t getExpire(redisDb *db, robj *key);
 912 void setExpire(redisDb *db, robj *key, time_t when);
 913 robj *lookupKey(redisDb *db, robj *key);
 914 robj *lookupKeyRead(redisDb *db, robj *key);
 915 robj *lookupKeyWrite(redisDb *db, robj *key);
 916 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
 917 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
 918 int dbAdd(redisDb *db, robj *key, robj *val);
 919 int dbReplace(redisDb *db, robj *key, robj *val);
 920 int dbExists(redisDb *db, robj *key);
 921 robj *dbRandomKey(redisDb *db);
 922 int dbDelete(redisDb *db, robj *key);
 923 long long emptyDb();
 924 int selectDb(redisClient *c, int id);
 925 void signalModifiedKey(redisDb *db, robj *key);
 926 void signalFlushedDb(int dbid);
 927
 928 /* Git SHA1 */
 929 char *redisGitSHA1(void);
 930 char *redisGitDirty(void);
 931
 932 /* Commands prototypes */
 933 void authCommand(redisClient *c);
 934 void pingCommand(redisClient *c);
 935 void echoCommand(redisClient *c);
 936 void setCommand(redisClient *c);
 937 void setnxCommand(redisClient *c);
 938 void setexCommand(redisClient *c);
 939 void getCommand(redisClient *c);
 940 void delCommand(redisClient *c);
 941 void existsCommand(redisClient *c);
 942 void setbitCommand(redisClient *c);
 943 void getbitCommand(redisClient *c);
 944 void setrangeCommand(redisClient *c);
 945 void getrangeCommand(redisClient *c);
 946 void incrCommand(redisClient *c);
 947 void decrCommand(redisClient *c);
 948 void incrbyCommand(redisClient *c);
 949 void decrbyCommand(redisClient *c);
 950 void selectCommand(redisClient *c);
 951 void randomkeyCommand(redisClient *c);
 952 void keysCommand(redisClient *c);
 953 void dbsizeCommand(redisClient *c);
 954 void lastsaveCommand(redisClient *c);
 955 void saveCommand(redisClient *c);
 956 void bgsaveCommand(redisClient *c);
 957 void bgrewriteaofCommand(redisClient *c);
 958 void shutdownCommand(redisClient *c);
 959 void moveCommand(redisClient *c);
 960 void renameCommand(redisClient *c);
 961 void renamenxCommand(redisClient *c);
 962 void lpushCommand(redisClient *c);
 963 void rpushCommand(redisClient *c);
 964 void lpushxCommand(redisClient *c);
 965 void rpushxCommand(redisClient *c);
 966 void linsertCommand(redisClient *c);
 967 void lpopCommand(redisClient *c);
 968 void rpopCommand(redisClient *c);
 969 void llenCommand(redisClient *c);
 970 void lindexCommand(redisClient *c);
 971 void lrangeCommand(redisClient *c);
 972 void ltrimCommand(redisClient *c);
 973 void typeCommand(redisClient *c);
 974 void lsetCommand(redisClient *c);
 975 void saddCommand(redisClient *c);
 976 void sremCommand(redisClient *c);
 977 void smoveCommand(redisClient *c);
 978 void sismemberCommand(redisClient *c);
 979 void scardCommand(redisClient *c);
 980 void spopCommand(redisClient *c);
 981 void srandmemberCommand(redisClient *c);
 982 void sinterCommand(redisClient *c);
 983 void sinterstoreCommand(redisClient *c);
 984 void sunionCommand(redisClient *c);
 985 void sunionstoreCommand(redisClient *c);
 986 void sdiffCommand(redisClient *c);
 987 void sdiffstoreCommand(redisClient *c);
 988 void syncCommand(redisClient *c);
 989 void flushdbCommand(redisClient *c);
 990 void flushallCommand(redisClient *c);
 991 void sortCommand(redisClient *c);
 992 void lremCommand(redisClient *c);
 993 void rpoplpushCommand(redisClient *c);
 994 void infoCommand(redisClient *c);
 995 void mgetCommand(redisClient *c);
 996 void monitorCommand(redisClient *c);
 997 void expireCommand(redisClient *c);
 998 void expireatCommand(redisClient *c);
 999 void getsetCommand(redisClient *c);
1000 void ttlCommand(redisClient *c);
1001 void persistCommand(redisClient *c);
1002 void slaveofCommand(redisClient *c);
1003 void debugCommand(redisClient *c);
1004 void msetCommand(redisClient *c);
1005 void msetnxCommand(redisClient *c);
1006 void zaddCommand(redisClient *c);
1007 void zincrbyCommand(redisClient *c);
1008 void zrangeCommand(redisClient *c);
1009 void zrangebyscoreCommand(redisClient *c);
1010 void zrevrangebyscoreCommand(redisClient *c);
1011 void zcountCommand(redisClient *c);
1012 void zrevrangeCommand(redisClient *c);
1013 void zcardCommand(redisClient *c);
1014 void zremCommand(redisClient *c);
1015 void zscoreCommand(redisClient *c);
1016 void zremrangebyscoreCommand(redisClient *c);
1017 void multiCommand(redisClient *c);
1018 void execCommand(redisClient *c);
1019 void discardCommand(redisClient *c);
1020 void blpopCommand(redisClient *c);
1021 void brpopCommand(redisClient *c);
1022 void brpoplpushCommand(redisClient *c);
1023 void appendCommand(redisClient *c);
1024 void strlenCommand(redisClient *c);
1025 void zrankCommand(redisClient *c);
1026 void zrevrankCommand(redisClient *c);
1027 void hsetCommand(redisClient *c);
1028 void hsetnxCommand(redisClient *c);
1029 void hgetCommand(redisClient *c);
1030 void hmsetCommand(redisClient *c);
1031 void hmgetCommand(redisClient *c);
1032 void hdelCommand(redisClient *c);
1033 void hlenCommand(redisClient *c);
1034 void zremrangebyrankCommand(redisClient *c);
1035 void zunionstoreCommand(redisClient *c);
1036 void zinterstoreCommand(redisClient *c);
1037 void hkeysCommand(redisClient *c);
1038 void hvalsCommand(redisClient *c);
1039 void hgetallCommand(redisClient *c);
1040 void hexistsCommand(redisClient *c);
1041 void configCommand(redisClient *c);
1042 void hincrbyCommand(redisClient *c);
1043 void subscribeCommand(redisClient *c);
1044 void unsubscribeCommand(redisClient *c);
1045 void psubscribeCommand(redisClient *c);
1046 void punsubscribeCommand(redisClient *c);
1047 void publishCommand(redisClient *c);
1048 void watchCommand(redisClient *c);
1049 void unwatchCommand(redisClient *c);
1050
1051 #if defined(__GNUC__)
1052 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1053 void free(void *ptr) __attribute__ ((deprecated));
1054 void *malloc(size_t size) __attribute__ ((deprecated));
1055 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1056 #endif
1057
1058 #endif