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