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1 #ifndef __REDIS_H
2 #define __REDIS_H
3
4 #include "fmacros.h"
5 #include "config.h"
6
7 #if defined(__sun)
8 #include "solarisfixes.h"
9 #endif
10
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <time.h>
15 #include <limits.h>
16 #include <unistd.h>
17 #include <errno.h>
18 #include <inttypes.h>
19 #include <pthread.h>
20 #include <syslog.h>
21 #include <netinet/in.h>
22 #include <lua.h>
23 #include <signal.h>
24
25 #include "ae.h" /* Event driven programming library */
26 #include "sds.h" /* Dynamic safe strings */
27 #include "dict.h" /* Hash tables */
28 #include "adlist.h" /* Linked lists */
29 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
30 #include "anet.h" /* Networking the easy way */
31 #include "ziplist.h" /* Compact list data structure */
32 #include "intset.h" /* Compact integer set structure */
33 #include "version.h" /* Version macro */
34 #include "util.h" /* Misc functions useful in many places */
35
36 /* Error codes */
37 #define REDIS_OK 0
38 #define REDIS_ERR -1
39
40 /* Static server configuration */
41 #define REDIS_HZ 100 /* Time interrupt calls/sec. */
42 #define REDIS_SERVERPORT 6379 /* TCP port */
43 #define REDIS_MAXIDLETIME 0 /* default client timeout: infinite */
44 #define REDIS_DEFAULT_DBNUM 16
45 #define REDIS_CONFIGLINE_MAX 1024
46 #define REDIS_EXPIRELOOKUPS_PER_CRON 10 /* lookup 10 expires per loop */
47 #define REDIS_EXPIRELOOKUPS_TIME_PERC 25 /* CPU max % for keys collection */
48 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
49 #define REDIS_SHARED_SELECT_CMDS 10
50 #define REDIS_SHARED_INTEGERS 10000
51 #define REDIS_SHARED_BULKHDR_LEN 32
52 #define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */
53 #define REDIS_AOF_REWRITE_PERC 100
54 #define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
55 #define REDIS_AOF_REWRITE_ITEMS_PER_CMD 64
56 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
57 #define REDIS_SLOWLOG_MAX_LEN 128
58 #define REDIS_MAX_CLIENTS 10000
59 #define REDIS_AUTHPASS_MAX_LEN 512
60 #define REDIS_DEFAULT_SLAVE_PRIORITY 100
61 #define REDIS_REPL_TIMEOUT 60
62 #define REDIS_REPL_PING_SLAVE_PERIOD 10
63 #define REDIS_RUN_ID_SIZE 40
64 #define REDIS_OPS_SEC_SAMPLES 16
65
66 /* Protocol and I/O related defines */
67 #define REDIS_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */
68 #define REDIS_IOBUF_LEN (1024*16) /* Generic I/O buffer size */
69 #define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
70 #define REDIS_INLINE_MAX_SIZE (1024*64) /* Max size of inline reads */
71 #define REDIS_MBULK_BIG_ARG (1024*32)
72
73 /* Hash table parameters */
74 #define REDIS_HT_MINFILL 10 /* Minimal hash table fill 10% */
75
76 /* Command flags. Please check the command table defined in the redis.c file
77 * for more information about the meaning of every flag. */
78 #define REDIS_CMD_WRITE 1 /* "w" flag */
79 #define REDIS_CMD_READONLY 2 /* "r" flag */
80 #define REDIS_CMD_DENYOOM 4 /* "m" flag */
81 #define REDIS_CMD_FORCE_REPLICATION 8 /* "f" flag */
82 #define REDIS_CMD_ADMIN 16 /* "a" flag */
83 #define REDIS_CMD_PUBSUB 32 /* "p" flag */
84 #define REDIS_CMD_NOSCRIPT 64 /* "s" flag */
85 #define REDIS_CMD_RANDOM 128 /* "R" flag */
86 #define REDIS_CMD_SORT_FOR_SCRIPT 256 /* "S" flag */
87 #define REDIS_CMD_LOADING 512 /* "l" flag */
88 #define REDIS_CMD_STALE 1024 /* "t" flag */
89 #define REDIS_CMD_SKIP_MONITOR 2048 /* "M" flag */
90
91 /* Object types */
92 #define REDIS_STRING 0
93 #define REDIS_LIST 1
94 #define REDIS_SET 2
95 #define REDIS_ZSET 3
96 #define REDIS_HASH 4
97
98 /* Objects encoding. Some kind of objects like Strings and Hashes can be
99 * internally represented in multiple ways. The 'encoding' field of the object
100 * is set to one of this fields for this object. */
101 #define REDIS_ENCODING_RAW 0 /* Raw representation */
102 #define REDIS_ENCODING_INT 1 /* Encoded as integer */
103 #define REDIS_ENCODING_HT 2 /* Encoded as hash table */
104 #define REDIS_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
105 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
106 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
107 #define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
108 #define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
109
110 /* Defines related to the dump file format. To store 32 bits lengths for short
111 * keys requires a lot of space, so we check the most significant 2 bits of
112 * the first byte to interpreter the length:
113 *
114 * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
115 * 01|000000 00000000 => 01, the len is 14 byes, 6 bits + 8 bits of next byte
116 * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
117 * 11|000000 this means: specially encoded object will follow. The six bits
118 * number specify the kind of object that follows.
119 * See the REDIS_RDB_ENC_* defines.
120 *
121 * Lenghts up to 63 are stored using a single byte, most DB keys, and may
122 * values, will fit inside. */
123 #define REDIS_RDB_6BITLEN 0
124 #define REDIS_RDB_14BITLEN 1
125 #define REDIS_RDB_32BITLEN 2
126 #define REDIS_RDB_ENCVAL 3
127 #define REDIS_RDB_LENERR UINT_MAX
128
129 /* When a length of a string object stored on disk has the first two bits
130 * set, the remaining two bits specify a special encoding for the object
131 * accordingly to the following defines: */
132 #define REDIS_RDB_ENC_INT8 0 /* 8 bit signed integer */
133 #define REDIS_RDB_ENC_INT16 1 /* 16 bit signed integer */
134 #define REDIS_RDB_ENC_INT32 2 /* 32 bit signed integer */
135 #define REDIS_RDB_ENC_LZF 3 /* string compressed with FASTLZ */
136
137 /* AOF states */
138 #define REDIS_AOF_OFF 0 /* AOF is off */
139 #define REDIS_AOF_ON 1 /* AOF is on */
140 #define REDIS_AOF_WAIT_REWRITE 2 /* AOF waits rewrite to start appending */
141
142 /* Client flags */
143 #define REDIS_SLAVE 1 /* This client is a slave server */
144 #define REDIS_MASTER 2 /* This client is a master server */
145 #define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
146 #define REDIS_MULTI 8 /* This client is in a MULTI context */
147 #define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
148 #define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
149 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
150 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
151 server.unblocked_clients */
152 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
153 #define REDIS_ASKING 1024 /* Client issued the ASKING command */
154 #define REDIS_CLOSE_ASAP 2048 /* Close this client ASAP */
155 #define REDIS_UNIX_SOCKET 4096 /* Client connected via Unix domain socket */
156
157 /* Client request types */
158 #define REDIS_REQ_INLINE 1
159 #define REDIS_REQ_MULTIBULK 2
160
161 /* Client classes for client limits, currently used only for
162 * the max-client-output-buffer limit implementation. */
163 #define REDIS_CLIENT_LIMIT_CLASS_NORMAL 0
164 #define REDIS_CLIENT_LIMIT_CLASS_SLAVE 1
165 #define REDIS_CLIENT_LIMIT_CLASS_PUBSUB 2
166 #define REDIS_CLIENT_LIMIT_NUM_CLASSES 3
167
168 /* Slave replication state - slave side */
169 #define REDIS_REPL_NONE 0 /* No active replication */
170 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
171 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
172 #define REDIS_REPL_RECEIVE_PONG 3 /* Wait for PING reply */
173 #define REDIS_REPL_TRANSFER 4 /* Receiving .rdb from master */
174 #define REDIS_REPL_CONNECTED 5 /* Connected to master */
175
176 /* Synchronous read timeout - slave side */
177 #define REDIS_REPL_SYNCIO_TIMEOUT 5
178
179 /* Slave replication state - from the point of view of master
180 * Note that in SEND_BULK and ONLINE state the slave receives new updates
181 * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
182 * to start the next background saving in order to send updates to it. */
183 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
184 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
185 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
186 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
187
188 /* List related stuff */
189 #define REDIS_HEAD 0
190 #define REDIS_TAIL 1
191
192 /* Sort operations */
193 #define REDIS_SORT_GET 0
194 #define REDIS_SORT_ASC 1
195 #define REDIS_SORT_DESC 2
196 #define REDIS_SORTKEY_MAX 1024
197
198 /* Log levels */
199 #define REDIS_DEBUG 0
200 #define REDIS_VERBOSE 1
201 #define REDIS_NOTICE 2
202 #define REDIS_WARNING 3
203 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
204
205 /* Anti-warning macro... */
206 #define REDIS_NOTUSED(V) ((void) V)
207
208 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
209 #define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
210
211 /* Append only defines */
212 #define AOF_FSYNC_NO 0
213 #define AOF_FSYNC_ALWAYS 1
214 #define AOF_FSYNC_EVERYSEC 2
215
216 /* Zip structure related defaults */
217 #define REDIS_HASH_MAX_ZIPLIST_ENTRIES 512
218 #define REDIS_HASH_MAX_ZIPLIST_VALUE 64
219 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
220 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
221 #define REDIS_SET_MAX_INTSET_ENTRIES 512
222 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
223 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
224
225 /* Sets operations codes */
226 #define REDIS_OP_UNION 0
227 #define REDIS_OP_DIFF 1
228 #define REDIS_OP_INTER 2
229
230 /* Redis maxmemory strategies */
231 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
232 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
233 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
234 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
235 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
236 #define REDIS_MAXMEMORY_NO_EVICTION 5
237
238 /* Scripting */
239 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
240
241 /* Units */
242 #define UNIT_SECONDS 0
243 #define UNIT_MILLISECONDS 1
244
245 /* SHUTDOWN flags */
246 #define REDIS_SHUTDOWN_SAVE 1 /* Force SAVE on SHUTDOWN even if no save
247 points are configured. */
248 #define REDIS_SHUTDOWN_NOSAVE 2 /* Don't SAVE on SHUTDOWN. */
249
250 /* Command call flags, see call() function */
251 #define REDIS_CALL_NONE 0
252 #define REDIS_CALL_SLOWLOG 1
253 #define REDIS_CALL_STATS 2
254 #define REDIS_CALL_PROPAGATE 4
255 #define REDIS_CALL_FULL (REDIS_CALL_SLOWLOG | REDIS_CALL_STATS | REDIS_CALL_PROPAGATE)
256
257 /* Command propagation flags, see propagate() function */
258 #define REDIS_PROPAGATE_NONE 0
259 #define REDIS_PROPAGATE_AOF 1
260 #define REDIS_PROPAGATE_REPL 2
261
262 /* Using the following macro you can run code inside serverCron() with the
263 * specified period, specified in milliseconds.
264 * The actual resolution depends on REDIS_HZ. */
265 #define run_with_period(_ms_) if (!(server.cronloops%((_ms_)/(1000/REDIS_HZ))))
266
267 /* We can print the stacktrace, so our assert is defined this way: */
268 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
269 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
270 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
271
272 /*-----------------------------------------------------------------------------
273 * Data types
274 *----------------------------------------------------------------------------*/
275
276 /* A redis object, that is a type able to hold a string / list / set */
277
278 /* The actual Redis Object */
279 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
280 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
281 typedef struct redisObject {
282 unsigned type:4;
283 unsigned notused:2; /* Not used */
284 unsigned encoding:4;
285 unsigned lru:22; /* lru time (relative to server.lruclock) */
286 int refcount;
287 void *ptr;
288 } robj;
289
290 /* Macro used to initalize a Redis object allocated on the stack.
291 * Note that this macro is taken near the structure definition to make sure
292 * we'll update it when the structure is changed, to avoid bugs like
293 * bug #85 introduced exactly in this way. */
294 #define initStaticStringObject(_var,_ptr) do { \
295 _var.refcount = 1; \
296 _var.type = REDIS_STRING; \
297 _var.encoding = REDIS_ENCODING_RAW; \
298 _var.ptr = _ptr; \
299 } while(0);
300
301 typedef struct redisDb {
302 dict *dict; /* The keyspace for this DB */
303 dict *expires; /* Timeout of keys with a timeout set */
304 dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */
305 dict *ready_keys; /* Blocked keys that received a PUSH */
306 dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
307 int id;
308 } redisDb;
309
310 /* Client MULTI/EXEC state */
311 typedef struct multiCmd {
312 robj **argv;
313 int argc;
314 struct redisCommand *cmd;
315 } multiCmd;
316
317 typedef struct multiState {
318 multiCmd *commands; /* Array of MULTI commands */
319 int count; /* Total number of MULTI commands */
320 } multiState;
321
322 typedef struct blockingState {
323 robj **keys; /* The key we are waiting to terminate a blocking
324 * operation such as BLPOP. Otherwise NULL. */
325 int count; /* Number of blocking keys */
326 time_t timeout; /* Blocking operation timeout. If UNIX current time
327 * is >= timeout then the operation timed out. */
328 robj *target; /* The key that should receive the element,
329 * for BRPOPLPUSH. */
330 } blockingState;
331
332 /* The following structure represents a node in the server.ready_keys list,
333 * where we accumulate all the keys that had clients blocked with a blocking
334 * operation such as B[LR]POP, but received new data in the context of the
335 * last executed command.
336 *
337 * After the execution of every command or script, we run this list to check
338 * if as a result we should serve data to clients blocked, unblocking them.
339 * Note that server.ready_keys will not have duplicates as there dictionary
340 * also called ready_keys in every structure representing a Redis database,
341 * where we make sure to remember if a given key was already added in the
342 * server.ready_keys list. */
343 typedef struct readyList {
344 redisDb *db;
345 robj *key;
346 } readyList;
347
348 /* With multiplexing we need to take per-clinet state.
349 * Clients are taken in a liked list. */
350 typedef struct redisClient {
351 int fd;
352 redisDb *db;
353 int dictid;
354 sds querybuf;
355 size_t querybuf_peak; /* Recent (100ms or more) peak of querybuf size */
356 int argc;
357 robj **argv;
358 struct redisCommand *cmd, *lastcmd;
359 int reqtype;
360 int multibulklen; /* number of multi bulk arguments left to read */
361 long bulklen; /* length of bulk argument in multi bulk request */
362 list *reply;
363 unsigned long reply_bytes; /* Tot bytes of objects in reply list */
364 int sentlen;
365 time_t ctime; /* Client creation time */
366 time_t lastinteraction; /* time of the last interaction, used for timeout */
367 time_t obuf_soft_limit_reached_time;
368 int flags; /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
369 int slaveseldb; /* slave selected db, if this client is a slave */
370 int authenticated; /* when requirepass is non-NULL */
371 int replstate; /* replication state if this is a slave */
372 int repldbfd; /* replication DB file descriptor */
373 long repldboff; /* replication DB file offset */
374 off_t repldbsize; /* replication DB file size */
375 int slave_listening_port; /* As configured with: SLAVECONF listening-port */
376 multiState mstate; /* MULTI/EXEC state */
377 blockingState bpop; /* blocking state */
378 list *io_keys; /* Keys this client is waiting to be loaded from the
379 * swap file in order to continue. */
380 list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
381 dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
382 list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
383
384 /* Response buffer */
385 int bufpos;
386 char buf[REDIS_REPLY_CHUNK_BYTES];
387 } redisClient;
388
389 struct saveparam {
390 time_t seconds;
391 int changes;
392 };
393
394 struct sharedObjectsStruct {
395 robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
396 *colon, *nullbulk, *nullmultibulk, *queued,
397 *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
398 *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *bgsaveerr,
399 *masterdownerr, *roslaveerr,
400 *oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk,
401 *unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *rpop, *lpop,
402 *lpush,
403 *select[REDIS_SHARED_SELECT_CMDS],
404 *integers[REDIS_SHARED_INTEGERS],
405 *mbulkhdr[REDIS_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
406 *bulkhdr[REDIS_SHARED_BULKHDR_LEN]; /* "$<value>\r\n" */
407 };
408
409 /* ZSETs use a specialized version of Skiplists */
410 typedef struct zskiplistNode {
411 robj *obj;
412 double score;
413 struct zskiplistNode *backward;
414 struct zskiplistLevel {
415 struct zskiplistNode *forward;
416 unsigned int span;
417 } level[];
418 } zskiplistNode;
419
420 typedef struct zskiplist {
421 struct zskiplistNode *header, *tail;
422 unsigned long length;
423 int level;
424 } zskiplist;
425
426 typedef struct zset {
427 dict *dict;
428 zskiplist *zsl;
429 } zset;
430
431 typedef struct clientBufferLimitsConfig {
432 unsigned long long hard_limit_bytes;
433 unsigned long long soft_limit_bytes;
434 time_t soft_limit_seconds;
435 } clientBufferLimitsConfig;
436
437 /* The redisOp structure defines a Redis Operation, that is an instance of
438 * a command with an argument vector, database ID, propagation target
439 * (REDIS_PROPAGATE_*), and command pointer.
440 *
441 * Currently only used to additionally propagate more commands to AOF/Replication
442 * after the propagation of the executed command. */
443 typedef struct redisOp {
444 robj **argv;
445 int argc, dbid, target;
446 struct redisCommand *cmd;
447 } redisOp;
448
449 /* Defines an array of Redis operations. There is an API to add to this
450 * structure in a easy way.
451 *
452 * redisOpArrayInit();
453 * redisOpArrayAppend();
454 * redisOpArrayFree();
455 */
456 typedef struct redisOpArray {
457 redisOp *ops;
458 int numops;
459 } redisOpArray;
460
461 /*-----------------------------------------------------------------------------
462 * Global server state
463 *----------------------------------------------------------------------------*/
464
465 struct redisServer {
466 /* General */
467 redisDb *db;
468 dict *commands; /* Command table hash table */
469 aeEventLoop *el;
470 unsigned lruclock:22; /* Clock incrementing every minute, for LRU */
471 unsigned lruclock_padding:10;
472 int shutdown_asap; /* SHUTDOWN needed ASAP */
473 int activerehashing; /* Incremental rehash in serverCron() */
474 char *requirepass; /* Pass for AUTH command, or NULL */
475 char *pidfile; /* PID file path */
476 int arch_bits; /* 32 or 64 depending on sizeof(long) */
477 int cronloops; /* Number of times the cron function run */
478 char runid[REDIS_RUN_ID_SIZE+1]; /* ID always different at every exec. */
479 int sentinel_mode; /* True if this instance is a Sentinel. */
480 /* Networking */
481 int port; /* TCP listening port */
482 char *bindaddr; /* Bind address or NULL */
483 char *unixsocket; /* UNIX socket path */
484 mode_t unixsocketperm; /* UNIX socket permission */
485 int ipfd; /* TCP socket file descriptor */
486 int sofd; /* Unix socket file descriptor */
487 list *clients; /* List of active clients */
488 list *clients_to_close; /* Clients to close asynchronously */
489 list *slaves, *monitors; /* List of slaves and MONITORs */
490 redisClient *current_client; /* Current client, only used on crash report */
491 char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
492 /* RDB / AOF loading information */
493 int loading; /* We are loading data from disk if true */
494 off_t loading_total_bytes;
495 off_t loading_loaded_bytes;
496 time_t loading_start_time;
497 /* Fast pointers to often looked up command */
498 struct redisCommand *delCommand, *multiCommand, *lpushCommand, *lpopCommand,
499 *rpopCommand;
500 /* Fields used only for stats */
501 time_t stat_starttime; /* Server start time */
502 long long stat_numcommands; /* Number of processed commands */
503 long long stat_numconnections; /* Number of connections received */
504 long long stat_expiredkeys; /* Number of expired keys */
505 long long stat_evictedkeys; /* Number of evicted keys (maxmemory) */
506 long long stat_keyspace_hits; /* Number of successful lookups of keys */
507 long long stat_keyspace_misses; /* Number of failed lookups of keys */
508 size_t stat_peak_memory; /* Max used memory record */
509 long long stat_fork_time; /* Time needed to perform latets fork() */
510 long long stat_rejected_conn; /* Clients rejected because of maxclients */
511 list *slowlog; /* SLOWLOG list of commands */
512 long long slowlog_entry_id; /* SLOWLOG current entry ID */
513 long long slowlog_log_slower_than; /* SLOWLOG time limit (to get logged) */
514 unsigned long slowlog_max_len; /* SLOWLOG max number of items logged */
515 /* The following two are used to track instantaneous "load" in terms
516 * of operations per second. */
517 long long ops_sec_last_sample_time; /* Timestamp of last sample (in ms) */
518 long long ops_sec_last_sample_ops; /* numcommands in last sample */
519 long long ops_sec_samples[REDIS_OPS_SEC_SAMPLES];
520 int ops_sec_idx;
521 /* Configuration */
522 int verbosity; /* Loglevel in redis.conf */
523 int maxidletime; /* Client timeout in seconds */
524 size_t client_max_querybuf_len; /* Limit for client query buffer length */
525 int dbnum; /* Total number of configured DBs */
526 int daemonize; /* True if running as a daemon */
527 clientBufferLimitsConfig client_obuf_limits[REDIS_CLIENT_LIMIT_NUM_CLASSES];
528 /* AOF persistence */
529 int aof_state; /* REDIS_AOF_(ON|OFF|WAIT_REWRITE) */
530 int aof_fsync; /* Kind of fsync() policy */
531 char *aof_filename; /* Name of the AOF file */
532 int aof_no_fsync_on_rewrite; /* Don't fsync if a rewrite is in prog. */
533 int aof_rewrite_perc; /* Rewrite AOF if % growth is > M and... */
534 off_t aof_rewrite_min_size; /* the AOF file is at least N bytes. */
535 off_t aof_rewrite_base_size; /* AOF size on latest startup or rewrite. */
536 off_t aof_current_size; /* AOF current size. */
537 int aof_rewrite_scheduled; /* Rewrite once BGSAVE terminates. */
538 pid_t aof_child_pid; /* PID if rewriting process */
539 list *aof_rewrite_buf_blocks; /* Hold changes during an AOF rewrite. */
540 sds aof_buf; /* AOF buffer, written before entering the event loop */
541 int aof_fd; /* File descriptor of currently selected AOF file */
542 int aof_selected_db; /* Currently selected DB in AOF */
543 time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */
544 time_t aof_last_fsync; /* UNIX time of last fsync() */
545 time_t aof_rewrite_time_last; /* Time used by last AOF rewrite run. */
546 time_t aof_rewrite_time_start; /* Current AOF rewrite start time. */
547 int aof_lastbgrewrite_status; /* REDIS_OK or REDIS_ERR */
548 unsigned long aof_delayed_fsync; /* delayed AOF fsync() counter */
549 /* RDB persistence */
550 long long dirty; /* Changes to DB from the last save */
551 long long dirty_before_bgsave; /* Used to restore dirty on failed BGSAVE */
552 pid_t rdb_child_pid; /* PID of RDB saving child */
553 struct saveparam *saveparams; /* Save points array for RDB */
554 int saveparamslen; /* Number of saving points */
555 char *rdb_filename; /* Name of RDB file */
556 int rdb_compression; /* Use compression in RDB? */
557 int rdb_checksum; /* Use RDB checksum? */
558 time_t lastsave; /* Unix time of last save succeeede */
559 time_t rdb_save_time_last; /* Time used by last RDB save run. */
560 time_t rdb_save_time_start; /* Current RDB save start time. */
561 int lastbgsave_status; /* REDIS_OK or REDIS_ERR */
562 int stop_writes_on_bgsave_err; /* Don't allow writes if can't BGSAVE */
563 /* Propagation of commands in AOF / replication */
564 redisOpArray also_propagate; /* Additional command to propagate. */
565 /* Logging */
566 char *logfile; /* Path of log file */
567 int syslog_enabled; /* Is syslog enabled? */
568 char *syslog_ident; /* Syslog ident */
569 int syslog_facility; /* Syslog facility */
570 /* Slave specific fields */
571 char *masterauth; /* AUTH with this password with master */
572 char *masterhost; /* Hostname of master */
573 int masterport; /* Port of master */
574 int repl_ping_slave_period; /* Master pings the slave every N seconds */
575 int repl_timeout; /* Timeout after N seconds of master idle */
576 redisClient *master; /* Client that is master for this slave */
577 int repl_syncio_timeout; /* Timeout for synchronous I/O calls */
578 int repl_state; /* Replication status if the instance is a slave */
579 off_t repl_transfer_size; /* Size of RDB to read from master during sync. */
580 off_t repl_transfer_read; /* Amount of RDB read from master during sync. */
581 off_t repl_transfer_last_fsync_off; /* Offset when we fsync-ed last time. */
582 int repl_transfer_s; /* Slave -> Master SYNC socket */
583 int repl_transfer_fd; /* Slave -> Master SYNC temp file descriptor */
584 char *repl_transfer_tmpfile; /* Slave-> master SYNC temp file name */
585 time_t repl_transfer_lastio; /* Unix time of the latest read, for timeout */
586 int repl_serve_stale_data; /* Serve stale data when link is down? */
587 int repl_slave_ro; /* Slave is read only? */
588 time_t repl_down_since; /* Unix time at which link with master went down */
589 int slave_priority; /* Reported in INFO and used by Sentinel. */
590 /* Limits */
591 unsigned int maxclients; /* Max number of simultaneous clients */
592 unsigned long long maxmemory; /* Max number of memory bytes to use */
593 int maxmemory_policy; /* Policy for key evition */
594 int maxmemory_samples; /* Pricision of random sampling */
595 /* Blocked clients */
596 unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
597 list *unblocked_clients; /* list of clients to unblock before next loop */
598 list *ready_keys; /* List of readyList structures for BLPOP & co */
599 /* Sort parameters - qsort_r() is only available under BSD so we
600 * have to take this state global, in order to pass it to sortCompare() */
601 int sort_desc;
602 int sort_alpha;
603 int sort_bypattern;
604 /* Zip structure config, see redis.conf for more information */
605 size_t hash_max_ziplist_entries;
606 size_t hash_max_ziplist_value;
607 size_t list_max_ziplist_entries;
608 size_t list_max_ziplist_value;
609 size_t set_max_intset_entries;
610 size_t zset_max_ziplist_entries;
611 size_t zset_max_ziplist_value;
612 time_t unixtime; /* Unix time sampled every second. */
613 /* Pubsub */
614 dict *pubsub_channels; /* Map channels to list of subscribed clients */
615 list *pubsub_patterns; /* A list of pubsub_patterns */
616 /* Scripting */
617 lua_State *lua; /* The Lua interpreter. We use just one for all clients */
618 redisClient *lua_client; /* The "fake client" to query Redis from Lua */
619 redisClient *lua_caller; /* The client running EVAL right now, or NULL */
620 dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
621 long long lua_time_limit; /* Script timeout in seconds */
622 long long lua_time_start; /* Start time of script */
623 int lua_write_dirty; /* True if a write command was called during the
624 execution of the current script. */
625 int lua_random_dirty; /* True if a random command was called during the
626 execution of the current script. */
627 int lua_timedout; /* True if we reached the time limit for script
628 execution. */
629 int lua_kill; /* Kill the script if true. */
630 /* Assert & bug reportign */
631 char *assert_failed;
632 char *assert_file;
633 int assert_line;
634 int bug_report_start; /* True if bug report header was already logged. */
635 int watchdog_period; /* Software watchdog period in ms. 0 = off */
636 };
637
638 typedef struct pubsubPattern {
639 redisClient *client;
640 robj *pattern;
641 } pubsubPattern;
642
643 typedef void redisCommandProc(redisClient *c);
644 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
645 struct redisCommand {
646 char *name;
647 redisCommandProc *proc;
648 int arity;
649 char *sflags; /* Flags as string represenation, one char per flag. */
650 int flags; /* The actual flags, obtained from the 'sflags' field. */
651 /* Use a function to determine keys arguments in a command line. */
652 redisGetKeysProc *getkeys_proc;
653 /* What keys should be loaded in background when calling this command? */
654 int firstkey; /* The first argument that's a key (0 = no keys) */
655 int lastkey; /* THe last argument that's a key */
656 int keystep; /* The step between first and last key */
657 long long microseconds, calls;
658 };
659
660 struct redisFunctionSym {
661 char *name;
662 unsigned long pointer;
663 };
664
665 typedef struct _redisSortObject {
666 robj *obj;
667 union {
668 double score;
669 robj *cmpobj;
670 } u;
671 } redisSortObject;
672
673 typedef struct _redisSortOperation {
674 int type;
675 robj *pattern;
676 } redisSortOperation;
677
678 /* Structure to hold list iteration abstraction. */
679 typedef struct {
680 robj *subject;
681 unsigned char encoding;
682 unsigned char direction; /* Iteration direction */
683 unsigned char *zi;
684 listNode *ln;
685 } listTypeIterator;
686
687 /* Structure for an entry while iterating over a list. */
688 typedef struct {
689 listTypeIterator *li;
690 unsigned char *zi; /* Entry in ziplist */
691 listNode *ln; /* Entry in linked list */
692 } listTypeEntry;
693
694 /* Structure to hold set iteration abstraction. */
695 typedef struct {
696 robj *subject;
697 int encoding;
698 int ii; /* intset iterator */
699 dictIterator *di;
700 } setTypeIterator;
701
702 /* Structure to hold hash iteration abstration. Note that iteration over
703 * hashes involves both fields and values. Because it is possible that
704 * not both are required, store pointers in the iterator to avoid
705 * unnecessary memory allocation for fields/values. */
706 typedef struct {
707 robj *subject;
708 int encoding;
709
710 unsigned char *fptr, *vptr;
711
712 dictIterator *di;
713 dictEntry *de;
714 } hashTypeIterator;
715
716 #define REDIS_HASH_KEY 1
717 #define REDIS_HASH_VALUE 2
718
719 /*-----------------------------------------------------------------------------
720 * Extern declarations
721 *----------------------------------------------------------------------------*/
722
723 extern struct redisServer server;
724 extern struct sharedObjectsStruct shared;
725 extern dictType setDictType;
726 extern dictType zsetDictType;
727 extern dictType dbDictType;
728 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
729 extern dictType hashDictType;
730
731 /*-----------------------------------------------------------------------------
732 * Functions prototypes
733 *----------------------------------------------------------------------------*/
734
735 /* Utils */
736 long long ustime(void);
737 long long mstime(void);
738 void getRandomHexChars(char *p, unsigned int len);
739 uint64_t crc64(uint64_t crc, const unsigned char *s, uint64_t l);
740 void exitFromChild(int retcode);
741
742 /* networking.c -- Networking and Client related operations */
743 redisClient *createClient(int fd);
744 void closeTimedoutClients(void);
745 void freeClient(redisClient *c);
746 void resetClient(redisClient *c);
747 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
748 void addReply(redisClient *c, robj *obj);
749 void *addDeferredMultiBulkLength(redisClient *c);
750 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
751 void addReplySds(redisClient *c, sds s);
752 void processInputBuffer(redisClient *c);
753 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
754 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
755 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
756 void addReplyBulk(redisClient *c, robj *obj);
757 void addReplyBulkCString(redisClient *c, char *s);
758 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
759 void addReplyBulkLongLong(redisClient *c, long long ll);
760 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
761 void addReply(redisClient *c, robj *obj);
762 void addReplySds(redisClient *c, sds s);
763 void addReplyError(redisClient *c, char *err);
764 void addReplyStatus(redisClient *c, char *status);
765 void addReplyDouble(redisClient *c, double d);
766 void addReplyLongLong(redisClient *c, long long ll);
767 void addReplyMultiBulkLen(redisClient *c, long length);
768 void copyClientOutputBuffer(redisClient *dst, redisClient *src);
769 void *dupClientReplyValue(void *o);
770 void getClientsMaxBuffers(unsigned long *longest_output_list,
771 unsigned long *biggest_input_buffer);
772 sds getClientInfoString(redisClient *client);
773 sds getAllClientsInfoString(void);
774 void rewriteClientCommandVector(redisClient *c, int argc, ...);
775 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
776 unsigned long getClientOutputBufferMemoryUsage(redisClient *c);
777 void freeClientsInAsyncFreeQueue(void);
778 void asyncCloseClientOnOutputBufferLimitReached(redisClient *c);
779 int getClientLimitClassByName(char *name);
780 char *getClientLimitClassName(int class);
781 void flushSlavesOutputBuffers(void);
782 void disconnectSlaves(void);
783
784 #ifdef __GNUC__
785 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
786 __attribute__((format(printf, 2, 3)));
787 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
788 __attribute__((format(printf, 2, 3)));
789 #else
790 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
791 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
792 #endif
793
794 /* List data type */
795 void listTypeTryConversion(robj *subject, robj *value);
796 void listTypePush(robj *subject, robj *value, int where);
797 robj *listTypePop(robj *subject, int where);
798 unsigned long listTypeLength(robj *subject);
799 listTypeIterator *listTypeInitIterator(robj *subject, long index, unsigned char direction);
800 void listTypeReleaseIterator(listTypeIterator *li);
801 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
802 robj *listTypeGet(listTypeEntry *entry);
803 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
804 int listTypeEqual(listTypeEntry *entry, robj *o);
805 void listTypeDelete(listTypeEntry *entry);
806 void listTypeConvert(robj *subject, int enc);
807 void unblockClientWaitingData(redisClient *c);
808 void handleClientsBlockedOnLists(void);
809 void popGenericCommand(redisClient *c, int where);
810
811 /* MULTI/EXEC/WATCH... */
812 void unwatchAllKeys(redisClient *c);
813 void initClientMultiState(redisClient *c);
814 void freeClientMultiState(redisClient *c);
815 void queueMultiCommand(redisClient *c);
816 void touchWatchedKey(redisDb *db, robj *key);
817 void touchWatchedKeysOnFlush(int dbid);
818 void discardTransaction(redisClient *c);
819
820 /* Redis object implementation */
821 void decrRefCount(void *o);
822 void incrRefCount(robj *o);
823 robj *resetRefCount(robj *obj);
824 void freeStringObject(robj *o);
825 void freeListObject(robj *o);
826 void freeSetObject(robj *o);
827 void freeZsetObject(robj *o);
828 void freeHashObject(robj *o);
829 robj *createObject(int type, void *ptr);
830 robj *createStringObject(char *ptr, size_t len);
831 robj *dupStringObject(robj *o);
832 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
833 robj *tryObjectEncoding(robj *o);
834 robj *getDecodedObject(robj *o);
835 size_t stringObjectLen(robj *o);
836 robj *createStringObjectFromLongLong(long long value);
837 robj *createStringObjectFromLongDouble(long double value);
838 robj *createListObject(void);
839 robj *createZiplistObject(void);
840 robj *createSetObject(void);
841 robj *createIntsetObject(void);
842 robj *createHashObject(void);
843 robj *createZsetObject(void);
844 robj *createZsetZiplistObject(void);
845 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
846 int checkType(redisClient *c, robj *o, int type);
847 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
848 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
849 int getLongLongFromObject(robj *o, long long *target);
850 int getLongDoubleFromObject(robj *o, long double *target);
851 int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
852 char *strEncoding(int encoding);
853 int compareStringObjects(robj *a, robj *b);
854 int equalStringObjects(robj *a, robj *b);
855 unsigned long estimateObjectIdleTime(robj *o);
856
857 /* Synchronous I/O with timeout */
858 ssize_t syncWrite(int fd, char *ptr, ssize_t size, long long timeout);
859 ssize_t syncRead(int fd, char *ptr, ssize_t size, long long timeout);
860 ssize_t syncReadLine(int fd, char *ptr, ssize_t size, long long timeout);
861
862 /* Replication */
863 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
864 void replicationFeedMonitors(redisClient *c, list *monitors, int dictid, robj **argv, int argc);
865 void updateSlavesWaitingBgsave(int bgsaveerr);
866 void replicationCron(void);
867
868 /* Generic persistence functions */
869 void startLoading(FILE *fp);
870 void loadingProgress(off_t pos);
871 void stopLoading(void);
872
873 /* RDB persistence */
874 #include "rdb.h"
875
876 /* AOF persistence */
877 void flushAppendOnlyFile(int force);
878 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
879 void aofRemoveTempFile(pid_t childpid);
880 int rewriteAppendOnlyFileBackground(void);
881 int loadAppendOnlyFile(char *filename);
882 void stopAppendOnly(void);
883 int startAppendOnly(void);
884 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
885 void aofRewriteBufferReset(void);
886 unsigned long aofRewriteBufferSize(void);
887
888 /* Sorted sets data type */
889
890 /* Struct to hold a inclusive/exclusive range spec. */
891 typedef struct {
892 double min, max;
893 int minex, maxex; /* are min or max exclusive? */
894 } zrangespec;
895
896 zskiplist *zslCreate(void);
897 void zslFree(zskiplist *zsl);
898 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
899 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
900 int zslDelete(zskiplist *zsl, double score, robj *obj);
901 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
902 double zzlGetScore(unsigned char *sptr);
903 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
904 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
905 unsigned int zsetLength(robj *zobj);
906 void zsetConvert(robj *zobj, int encoding);
907
908 /* Core functions */
909 int freeMemoryIfNeeded(void);
910 int processCommand(redisClient *c);
911 void setupSignalHandlers(void);
912 struct redisCommand *lookupCommand(sds name);
913 struct redisCommand *lookupCommandByCString(char *s);
914 void call(redisClient *c, int flags);
915 void propagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int flags);
916 void alsoPropagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int target);
917 int prepareForShutdown();
918 void redisLog(int level, const char *fmt, ...);
919 void redisLogRaw(int level, const char *msg);
920 void redisLogFromHandler(int level, const char *msg);
921 void usage();
922 void updateDictResizePolicy(void);
923 int htNeedsResize(dict *dict);
924 void oom(const char *msg);
925 void populateCommandTable(void);
926 void resetCommandTableStats(void);
927
928 /* Set data type */
929 robj *setTypeCreate(robj *value);
930 int setTypeAdd(robj *subject, robj *value);
931 int setTypeRemove(robj *subject, robj *value);
932 int setTypeIsMember(robj *subject, robj *value);
933 setTypeIterator *setTypeInitIterator(robj *subject);
934 void setTypeReleaseIterator(setTypeIterator *si);
935 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
936 robj *setTypeNextObject(setTypeIterator *si);
937 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
938 unsigned long setTypeSize(robj *subject);
939 void setTypeConvert(robj *subject, int enc);
940
941 /* Hash data type */
942 void hashTypeConvert(robj *o, int enc);
943 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
944 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
945 robj *hashTypeGetObject(robj *o, robj *key);
946 int hashTypeExists(robj *o, robj *key);
947 int hashTypeSet(robj *o, robj *key, robj *value);
948 int hashTypeDelete(robj *o, robj *key);
949 unsigned long hashTypeLength(robj *o);
950 hashTypeIterator *hashTypeInitIterator(robj *subject);
951 void hashTypeReleaseIterator(hashTypeIterator *hi);
952 int hashTypeNext(hashTypeIterator *hi);
953 void hashTypeCurrentFromZiplist(hashTypeIterator *hi, int what,
954 unsigned char **vstr,
955 unsigned int *vlen,
956 long long *vll);
957 void hashTypeCurrentFromHashTable(hashTypeIterator *hi, int what, robj **dst);
958 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
959 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
960
961 /* Pub / Sub */
962 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
963 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
964 void freePubsubPattern(void *p);
965 int listMatchPubsubPattern(void *a, void *b);
966 int pubsubPublishMessage(robj *channel, robj *message);
967
968 /* Configuration */
969 void loadServerConfig(char *filename, char *options);
970 void appendServerSaveParams(time_t seconds, int changes);
971 void resetServerSaveParams();
972
973 /* db.c -- Keyspace access API */
974 int removeExpire(redisDb *db, robj *key);
975 void propagateExpire(redisDb *db, robj *key);
976 int expireIfNeeded(redisDb *db, robj *key);
977 long long getExpire(redisDb *db, robj *key);
978 void setExpire(redisDb *db, robj *key, long long when);
979 robj *lookupKey(redisDb *db, robj *key);
980 robj *lookupKeyRead(redisDb *db, robj *key);
981 robj *lookupKeyWrite(redisDb *db, robj *key);
982 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
983 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
984 void dbAdd(redisDb *db, robj *key, robj *val);
985 void dbOverwrite(redisDb *db, robj *key, robj *val);
986 void setKey(redisDb *db, robj *key, robj *val);
987 int dbExists(redisDb *db, robj *key);
988 robj *dbRandomKey(redisDb *db);
989 int dbDelete(redisDb *db, robj *key);
990 long long emptyDb();
991 int selectDb(redisClient *c, int id);
992 void signalModifiedKey(redisDb *db, robj *key);
993 void signalFlushedDb(int dbid);
994 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
995
996 /* API to get key arguments from commands */
997 #define REDIS_GETKEYS_ALL 0
998 #define REDIS_GETKEYS_PRELOAD 1
999 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
1000 void getKeysFreeResult(int *result);
1001 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1002 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1003 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1004
1005 /* Sentinel */
1006 void initSentinelConfig(void);
1007 void initSentinel(void);
1008 void sentinelTimer(void);
1009 char *sentinelHandleConfiguration(char **argv, int argc);
1010
1011 /* Scripting */
1012 void scriptingInit(void);
1013
1014 /* Git SHA1 */
1015 char *redisGitSHA1(void);
1016 char *redisGitDirty(void);
1017
1018 /* Commands prototypes */
1019 void authCommand(redisClient *c);
1020 void pingCommand(redisClient *c);
1021 void echoCommand(redisClient *c);
1022 void setCommand(redisClient *c);
1023 void setnxCommand(redisClient *c);
1024 void setexCommand(redisClient *c);
1025 void psetexCommand(redisClient *c);
1026 void getCommand(redisClient *c);
1027 void delCommand(redisClient *c);
1028 void existsCommand(redisClient *c);
1029 void setbitCommand(redisClient *c);
1030 void getbitCommand(redisClient *c);
1031 void setrangeCommand(redisClient *c);
1032 void getrangeCommand(redisClient *c);
1033 void incrCommand(redisClient *c);
1034 void decrCommand(redisClient *c);
1035 void incrbyCommand(redisClient *c);
1036 void decrbyCommand(redisClient *c);
1037 void incrbyfloatCommand(redisClient *c);
1038 void selectCommand(redisClient *c);
1039 void randomkeyCommand(redisClient *c);
1040 void keysCommand(redisClient *c);
1041 void dbsizeCommand(redisClient *c);
1042 void lastsaveCommand(redisClient *c);
1043 void saveCommand(redisClient *c);
1044 void bgsaveCommand(redisClient *c);
1045 void bgrewriteaofCommand(redisClient *c);
1046 void shutdownCommand(redisClient *c);
1047 void moveCommand(redisClient *c);
1048 void renameCommand(redisClient *c);
1049 void renamenxCommand(redisClient *c);
1050 void lpushCommand(redisClient *c);
1051 void rpushCommand(redisClient *c);
1052 void lpushxCommand(redisClient *c);
1053 void rpushxCommand(redisClient *c);
1054 void linsertCommand(redisClient *c);
1055 void lpopCommand(redisClient *c);
1056 void rpopCommand(redisClient *c);
1057 void llenCommand(redisClient *c);
1058 void lindexCommand(redisClient *c);
1059 void lrangeCommand(redisClient *c);
1060 void ltrimCommand(redisClient *c);
1061 void typeCommand(redisClient *c);
1062 void lsetCommand(redisClient *c);
1063 void saddCommand(redisClient *c);
1064 void sremCommand(redisClient *c);
1065 void smoveCommand(redisClient *c);
1066 void sismemberCommand(redisClient *c);
1067 void scardCommand(redisClient *c);
1068 void spopCommand(redisClient *c);
1069 void srandmemberCommand(redisClient *c);
1070 void sinterCommand(redisClient *c);
1071 void sinterstoreCommand(redisClient *c);
1072 void sunionCommand(redisClient *c);
1073 void sunionstoreCommand(redisClient *c);
1074 void sdiffCommand(redisClient *c);
1075 void sdiffstoreCommand(redisClient *c);
1076 void syncCommand(redisClient *c);
1077 void flushdbCommand(redisClient *c);
1078 void flushallCommand(redisClient *c);
1079 void sortCommand(redisClient *c);
1080 void lremCommand(redisClient *c);
1081 void rpoplpushCommand(redisClient *c);
1082 void infoCommand(redisClient *c);
1083 void mgetCommand(redisClient *c);
1084 void monitorCommand(redisClient *c);
1085 void expireCommand(redisClient *c);
1086 void expireatCommand(redisClient *c);
1087 void pexpireCommand(redisClient *c);
1088 void pexpireatCommand(redisClient *c);
1089 void getsetCommand(redisClient *c);
1090 void ttlCommand(redisClient *c);
1091 void pttlCommand(redisClient *c);
1092 void persistCommand(redisClient *c);
1093 void slaveofCommand(redisClient *c);
1094 void debugCommand(redisClient *c);
1095 void msetCommand(redisClient *c);
1096 void msetnxCommand(redisClient *c);
1097 void zaddCommand(redisClient *c);
1098 void zincrbyCommand(redisClient *c);
1099 void zrangeCommand(redisClient *c);
1100 void zrangebyscoreCommand(redisClient *c);
1101 void zrevrangebyscoreCommand(redisClient *c);
1102 void zcountCommand(redisClient *c);
1103 void zrevrangeCommand(redisClient *c);
1104 void zcardCommand(redisClient *c);
1105 void zremCommand(redisClient *c);
1106 void zscoreCommand(redisClient *c);
1107 void zremrangebyscoreCommand(redisClient *c);
1108 void multiCommand(redisClient *c);
1109 void execCommand(redisClient *c);
1110 void discardCommand(redisClient *c);
1111 void blpopCommand(redisClient *c);
1112 void brpopCommand(redisClient *c);
1113 void brpoplpushCommand(redisClient *c);
1114 void appendCommand(redisClient *c);
1115 void strlenCommand(redisClient *c);
1116 void zrankCommand(redisClient *c);
1117 void zrevrankCommand(redisClient *c);
1118 void hsetCommand(redisClient *c);
1119 void hsetnxCommand(redisClient *c);
1120 void hgetCommand(redisClient *c);
1121 void hmsetCommand(redisClient *c);
1122 void hmgetCommand(redisClient *c);
1123 void hdelCommand(redisClient *c);
1124 void hlenCommand(redisClient *c);
1125 void zremrangebyrankCommand(redisClient *c);
1126 void zunionstoreCommand(redisClient *c);
1127 void zinterstoreCommand(redisClient *c);
1128 void hkeysCommand(redisClient *c);
1129 void hvalsCommand(redisClient *c);
1130 void hgetallCommand(redisClient *c);
1131 void hexistsCommand(redisClient *c);
1132 void configCommand(redisClient *c);
1133 void hincrbyCommand(redisClient *c);
1134 void hincrbyfloatCommand(redisClient *c);
1135 void subscribeCommand(redisClient *c);
1136 void unsubscribeCommand(redisClient *c);
1137 void psubscribeCommand(redisClient *c);
1138 void punsubscribeCommand(redisClient *c);
1139 void publishCommand(redisClient *c);
1140 void watchCommand(redisClient *c);
1141 void unwatchCommand(redisClient *c);
1142 void restoreCommand(redisClient *c);
1143 void migrateCommand(redisClient *c);
1144 void dumpCommand(redisClient *c);
1145 void objectCommand(redisClient *c);
1146 void clientCommand(redisClient *c);
1147 void evalCommand(redisClient *c);
1148 void evalShaCommand(redisClient *c);
1149 void scriptCommand(redisClient *c);
1150 void timeCommand(redisClient *c);
1151 void bitopCommand(redisClient *c);
1152 void bitcountCommand(redisClient *c);
1153 void replconfCommand(redisClient *c);
1154
1155 #if defined(__GNUC__)
1156 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1157 void free(void *ptr) __attribute__ ((deprecated));
1158 void *malloc(size_t size) __attribute__ ((deprecated));
1159 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1160 #endif
1161
1162 /* Debugging stuff */
1163 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1164 void _redisAssert(char *estr, char *file, int line);
1165 void _redisPanic(char *msg, char *file, int line);
1166 void bugReportStart(void);
1167 void redisLogObjectDebugInfo(robj *o);
1168 void sigsegvHandler(int sig, siginfo_t *info, void *secret);
1169 sds genRedisInfoString(char *section);
1170 void enableWatchdog(int period);
1171 void disableWatchdog(void);
1172 void watchdogScheduleSignal(int period);
1173 void redisLogHexDump(int level, char *descr, void *value, size_t len);
1174
1175 #define redisDebug(fmt, ...) \
1176 printf("DEBUG %s:%d > " fmt "\n", __FILE__, __LINE__, __VA_ARGS__)
1177 #define redisDebugMark() \
1178 printf("-- MARK %s:%d --\n", __FILE__, __LINE__)
1179
1180 #endif
Redis += OpenLDAP MDB