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