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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 "zipmap.h" /* Compact string -> string data structure */
32 #include "ziplist.h" /* Compact list data structure */
33 #include "intset.h" /* Compact integer set structure */
34 #include "version.h" /* Version macro */
35 #include "util.h" /* Misc functions useful in many places */
36
37 /* Error codes */
38 #define REDIS_OK 0
39 #define REDIS_ERR -1
40
41 /* Static server configuration */
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_MAX_WRITE_PER_EVENT (1024*64)
48 #define REDIS_SHARED_INTEGERS 10000
49 #define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */
50 #define REDIS_AOF_REWRITE_PERC 100
51 #define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
52 #define REDIS_AOF_REWRITE_ITEMS_PER_CMD 64
53 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
54 #define REDIS_SLOWLOG_MAX_LEN 64
55 #define REDIS_MAX_CLIENTS 10000
56
57 #define REDIS_REPL_TIMEOUT 60
58 #define REDIS_REPL_PING_SLAVE_PERIOD 10
59
60 /* Protocol and I/O related defines */
61 #define REDIS_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */
62 #define REDIS_IOBUF_LEN (1024*16) /* Generic I/O buffer size */
63 #define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
64 #define REDIS_INLINE_MAX_SIZE (1024*64) /* Max size of inline reads */
65 #define REDIS_MBULK_BIG_ARG (1024*32)
66
67 /* Hash table parameters */
68 #define REDIS_HT_MINFILL 10 /* Minimal hash table fill 10% */
69
70 /* Command flags. Please check the command table defined in the redis.c file
71 * for more information about the meaning of every flag. */
72 #define REDIS_CMD_WRITE 1 /* "w" flag */
73 #define REDIS_CMD_READONLY 2 /* "r" flag */
74 #define REDIS_CMD_DENYOOM 4 /* "m" flag */
75 #define REDIS_CMD_FORCE_REPLICATION 8 /* "f" flag */
76 #define REDIS_CMD_ADMIN 16 /* "a" flag */
77 #define REDIS_CMD_PUBSUB 32 /* "p" flag */
78 #define REDIS_CMD_NOSCRIPT 64 /* "s" flag */
79 #define REDIS_CMD_RANDOM 128 /* "R" flag */
80
81 /* Object types */
82 #define REDIS_STRING 0
83 #define REDIS_LIST 1
84 #define REDIS_SET 2
85 #define REDIS_ZSET 3
86 #define REDIS_HASH 4
87 #define REDIS_VMPOINTER 8
88
89 /* Objects encoding. Some kind of objects like Strings and Hashes can be
90 * internally represented in multiple ways. The 'encoding' field of the object
91 * is set to one of this fields for this object. */
92 #define REDIS_ENCODING_RAW 0 /* Raw representation */
93 #define REDIS_ENCODING_INT 1 /* Encoded as integer */
94 #define REDIS_ENCODING_HT 2 /* Encoded as hash table */
95 #define REDIS_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
96 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
97 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
98 #define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
99 #define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
100
101 /* Defines related to the dump file format. To store 32 bits lengths for short
102 * keys requires a lot of space, so we check the most significant 2 bits of
103 * the first byte to interpreter the length:
104 *
105 * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
106 * 01|000000 00000000 => 01, the len is 14 byes, 6 bits + 8 bits of next byte
107 * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
108 * 11|000000 this means: specially encoded object will follow. The six bits
109 * number specify the kind of object that follows.
110 * See the REDIS_RDB_ENC_* defines.
111 *
112 * Lenghts up to 63 are stored using a single byte, most DB keys, and may
113 * values, will fit inside. */
114 #define REDIS_RDB_6BITLEN 0
115 #define REDIS_RDB_14BITLEN 1
116 #define REDIS_RDB_32BITLEN 2
117 #define REDIS_RDB_ENCVAL 3
118 #define REDIS_RDB_LENERR UINT_MAX
119
120 /* When a length of a string object stored on disk has the first two bits
121 * set, the remaining two bits specify a special encoding for the object
122 * accordingly to the following defines: */
123 #define REDIS_RDB_ENC_INT8 0 /* 8 bit signed integer */
124 #define REDIS_RDB_ENC_INT16 1 /* 16 bit signed integer */
125 #define REDIS_RDB_ENC_INT32 2 /* 32 bit signed integer */
126 #define REDIS_RDB_ENC_LZF 3 /* string compressed with FASTLZ */
127
128 /* AOF states */
129 #define REDIS_AOF_OFF 0 /* AOF is off */
130 #define REDIS_AOF_ON 1 /* AOF is on */
131 #define REDIS_AOF_WAIT_REWRITE 2 /* AOF waits rewrite to start appending */
132
133 /* Client flags */
134 #define REDIS_SLAVE 1 /* This client is a slave server */
135 #define REDIS_MASTER 2 /* This client is a master server */
136 #define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
137 #define REDIS_MULTI 8 /* This client is in a MULTI context */
138 #define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
139 #define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
140 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
141 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
142 server.unblocked_clients */
143 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
144 #define REDIS_ASKING 1024 /* Client issued the ASKING command */
145 #define REDIS_CLOSE_ASAP 2048 /* Close this client ASAP */
146
147 /* Client request types */
148 #define REDIS_REQ_INLINE 1
149 #define REDIS_REQ_MULTIBULK 2
150
151 /* Client classes for client limits, currently used only for
152 * the max-client-output-buffer limit implementation. */
153 #define REDIS_CLIENT_LIMIT_CLASS_NORMAL 0
154 #define REDIS_CLIENT_LIMIT_CLASS_SLAVE 1
155 #define REDIS_CLIENT_LIMIT_CLASS_PUBSUB 2
156 #define REDIS_CLIENT_LIMIT_NUM_CLASSES 3
157
158 /* Slave replication state - slave side */
159 #define REDIS_REPL_NONE 0 /* No active replication */
160 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
161 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
162 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
163 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
164
165 /* Synchronous read timeout - slave side */
166 #define REDIS_REPL_SYNCIO_TIMEOUT 5
167
168 /* Slave replication state - from the point of view of master
169 * Note that in SEND_BULK and ONLINE state the slave receives new updates
170 * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
171 * to start the next background saving in order to send updates to it. */
172 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
173 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
174 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
175 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
176
177 /* List related stuff */
178 #define REDIS_HEAD 0
179 #define REDIS_TAIL 1
180
181 /* Sort operations */
182 #define REDIS_SORT_GET 0
183 #define REDIS_SORT_ASC 1
184 #define REDIS_SORT_DESC 2
185 #define REDIS_SORTKEY_MAX 1024
186
187 /* Log levels */
188 #define REDIS_DEBUG 0
189 #define REDIS_VERBOSE 1
190 #define REDIS_NOTICE 2
191 #define REDIS_WARNING 3
192 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
193
194 /* Anti-warning macro... */
195 #define REDIS_NOTUSED(V) ((void) V)
196
197 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
198 #define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
199
200 /* Append only defines */
201 #define AOF_FSYNC_NO 0
202 #define AOF_FSYNC_ALWAYS 1
203 #define AOF_FSYNC_EVERYSEC 2
204
205 /* Zip structure related defaults */
206 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
207 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
208 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
209 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
210 #define REDIS_SET_MAX_INTSET_ENTRIES 512
211 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
212 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
213
214 /* Sets operations codes */
215 #define REDIS_OP_UNION 0
216 #define REDIS_OP_DIFF 1
217 #define REDIS_OP_INTER 2
218
219 /* Redis maxmemory strategies */
220 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
221 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
222 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
223 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
224 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
225 #define REDIS_MAXMEMORY_NO_EVICTION 5
226
227 /* Scripting */
228 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
229
230 /* Units */
231 #define UNIT_SECONDS 0
232 #define UNIT_MILLISECONDS 1
233
234 /* SHUTDOWN flags */
235 #define REDIS_SHUTDOWN_SAVE 1 /* Force SAVE on SHUTDOWN even if no save
236 points are configured. */
237 #define REDIS_SHUTDOWN_NOSAVE 2 /* Don't SAVE on SHUTDOWN. */
238
239 /* We can print the stacktrace, so our assert is defined this way: */
240 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
241 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
242 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
243
244 /*-----------------------------------------------------------------------------
245 * Data types
246 *----------------------------------------------------------------------------*/
247
248 /* A redis object, that is a type able to hold a string / list / set */
249
250 /* The actual Redis Object */
251 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
252 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
253 typedef struct redisObject {
254 unsigned type:4;
255 unsigned notused:2; /* Not used */
256 unsigned encoding:4;
257 unsigned lru:22; /* lru time (relative to server.lruclock) */
258 int refcount;
259 void *ptr;
260 } robj;
261
262 /* Macro used to initalize a Redis object allocated on the stack.
263 * Note that this macro is taken near the structure definition to make sure
264 * we'll update it when the structure is changed, to avoid bugs like
265 * bug #85 introduced exactly in this way. */
266 #define initStaticStringObject(_var,_ptr) do { \
267 _var.refcount = 1; \
268 _var.type = REDIS_STRING; \
269 _var.encoding = REDIS_ENCODING_RAW; \
270 _var.ptr = _ptr; \
271 } while(0);
272
273 typedef struct redisDb {
274 dict *dict; /* The keyspace for this DB */
275 dict *expires; /* Timeout of keys with a timeout set */
276 dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */
277 dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
278 int id;
279 } redisDb;
280
281 /* Client MULTI/EXEC state */
282 typedef struct multiCmd {
283 robj **argv;
284 int argc;
285 struct redisCommand *cmd;
286 } multiCmd;
287
288 typedef struct multiState {
289 multiCmd *commands; /* Array of MULTI commands */
290 int count; /* Total number of MULTI commands */
291 } multiState;
292
293 typedef struct blockingState {
294 robj **keys; /* The key we are waiting to terminate a blocking
295 * operation such as BLPOP. Otherwise NULL. */
296 int count; /* Number of blocking keys */
297 time_t timeout; /* Blocking operation timeout. If UNIX current time
298 * is >= timeout then the operation timed out. */
299 robj *target; /* The key that should receive the element,
300 * for BRPOPLPUSH. */
301 } blockingState;
302
303 /* With multiplexing we need to take per-clinet state.
304 * Clients are taken in a liked list. */
305 typedef struct redisClient {
306 int fd;
307 redisDb *db;
308 int dictid;
309 sds querybuf;
310 int argc;
311 robj **argv;
312 struct redisCommand *cmd, *lastcmd;
313 int reqtype;
314 int multibulklen; /* number of multi bulk arguments left to read */
315 long bulklen; /* length of bulk argument in multi bulk request */
316 list *reply;
317 unsigned long reply_bytes; /* Tot bytes of objects in reply list */
318 int sentlen;
319 time_t lastinteraction; /* time of the last interaction, used for timeout */
320 time_t obuf_soft_limit_reached_time;
321 int flags; /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
322 int slaveseldb; /* slave selected db, if this client is a slave */
323 int authenticated; /* when requirepass is non-NULL */
324 int replstate; /* replication state if this is a slave */
325 int repldbfd; /* replication DB file descriptor */
326 long repldboff; /* replication DB file offset */
327 off_t repldbsize; /* replication DB file size */
328 multiState mstate; /* MULTI/EXEC state */
329 blockingState bpop; /* blocking state */
330 list *io_keys; /* Keys this client is waiting to be loaded from the
331 * swap file in order to continue. */
332 list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
333 dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
334 list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
335
336 /* Response buffer */
337 int bufpos;
338 char buf[REDIS_REPLY_CHUNK_BYTES];
339 } redisClient;
340
341 struct saveparam {
342 time_t seconds;
343 int changes;
344 };
345
346 struct sharedObjectsStruct {
347 robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
348 *colon, *nullbulk, *nullmultibulk, *queued,
349 *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
350 *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,
351 *select0, *select1, *select2, *select3, *select4,
352 *select5, *select6, *select7, *select8, *select9,
353 *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
354 *mbulk4, *psubscribebulk, *punsubscribebulk,
355 *integers[REDIS_SHARED_INTEGERS];
356 };
357
358 /* ZSETs use a specialized version of Skiplists */
359 typedef struct zskiplistNode {
360 robj *obj;
361 double score;
362 struct zskiplistNode *backward;
363 struct zskiplistLevel {
364 struct zskiplistNode *forward;
365 unsigned int span;
366 } level[];
367 } zskiplistNode;
368
369 typedef struct zskiplist {
370 struct zskiplistNode *header, *tail;
371 unsigned long length;
372 int level;
373 } zskiplist;
374
375 typedef struct zset {
376 dict *dict;
377 zskiplist *zsl;
378 } zset;
379
380 typedef struct clientBufferLimitsConfig {
381 unsigned long hard_limit_bytes;
382 unsigned long soft_limit_bytes;
383 time_t soft_limit_seconds;
384 } clientBufferLimitsConfig;
385
386 /*-----------------------------------------------------------------------------
387 * Redis cluster data structures
388 *----------------------------------------------------------------------------*/
389
390 #define REDIS_CLUSTER_SLOTS 4096
391 #define REDIS_CLUSTER_OK 0 /* Everything looks ok */
392 #define REDIS_CLUSTER_FAIL 1 /* The cluster can't work */
393 #define REDIS_CLUSTER_NEEDHELP 2 /* The cluster works, but needs some help */
394 #define REDIS_CLUSTER_NAMELEN 40 /* sha1 hex length */
395 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
396
397 struct clusterNode;
398
399 /* clusterLink encapsulates everything needed to talk with a remote node. */
400 typedef struct clusterLink {
401 int fd; /* TCP socket file descriptor */
402 sds sndbuf; /* Packet send buffer */
403 sds rcvbuf; /* Packet reception buffer */
404 struct clusterNode *node; /* Node related to this link if any, or NULL */
405 } clusterLink;
406
407 /* Node flags */
408 #define REDIS_NODE_MASTER 1 /* The node is a master */
409 #define REDIS_NODE_SLAVE 2 /* The node is a slave */
410 #define REDIS_NODE_PFAIL 4 /* Failure? Need acknowledge */
411 #define REDIS_NODE_FAIL 8 /* The node is believed to be malfunctioning */
412 #define REDIS_NODE_MYSELF 16 /* This node is myself */
413 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
414 #define REDIS_NODE_NOADDR 64 /* We don't know the address of this node */
415 #define REDIS_NODE_MEET 128 /* Send a MEET message to this node */
416 #define REDIS_NODE_NULL_NAME "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
417
418 struct clusterNode {
419 char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
420 int flags; /* REDIS_NODE_... */
421 unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
422 int numslaves; /* Number of slave nodes, if this is a master */
423 struct clusterNode **slaves; /* pointers to slave nodes */
424 struct clusterNode *slaveof; /* pointer to the master node */
425 time_t ping_sent; /* Unix time we sent latest ping */
426 time_t pong_received; /* Unix time we received the pong */
427 char *configdigest; /* Configuration digest of this node */
428 time_t configdigest_ts; /* Configuration digest timestamp */
429 char ip[16]; /* Latest known IP address of this node */
430 int port; /* Latest known port of this node */
431 clusterLink *link; /* TCP/IP link with this node */
432 };
433 typedef struct clusterNode clusterNode;
434
435 typedef struct {
436 char *configfile;
437 clusterNode *myself; /* This node */
438 int state; /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
439 int node_timeout;
440 dict *nodes; /* Hash table of name -> clusterNode structures */
441 clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
442 clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
443 clusterNode *slots[REDIS_CLUSTER_SLOTS];
444 zskiplist *slots_to_keys;
445 } clusterState;
446
447 /* Redis cluster messages header */
448
449 /* Note that the PING, PONG and MEET messages are actually the same exact
450 * kind of packet. PONG is the reply to ping, in the extact format as a PING,
451 * while MEET is a special PING that forces the receiver to add the sender
452 * as a node (if it is not already in the list). */
453 #define CLUSTERMSG_TYPE_PING 0 /* Ping */
454 #define CLUSTERMSG_TYPE_PONG 1 /* Pong (reply to Ping) */
455 #define CLUSTERMSG_TYPE_MEET 2 /* Meet "let's join" message */
456 #define CLUSTERMSG_TYPE_FAIL 3 /* Mark node xxx as failing */
457 #define CLUSTERMSG_TYPE_PUBLISH 4 /* Pub/Sub Publish propatagion */
458
459 /* Initially we don't know our "name", but we'll find it once we connect
460 * to the first node, using the getsockname() function. Then we'll use this
461 * address for all the next messages. */
462 typedef struct {
463 char nodename[REDIS_CLUSTER_NAMELEN];
464 uint32_t ping_sent;
465 uint32_t pong_received;
466 char ip[16]; /* IP address last time it was seen */
467 uint16_t port; /* port last time it was seen */
468 uint16_t flags;
469 uint32_t notused; /* for 64 bit alignment */
470 } clusterMsgDataGossip;
471
472 typedef struct {
473 char nodename[REDIS_CLUSTER_NAMELEN];
474 } clusterMsgDataFail;
475
476 typedef struct {
477 uint32_t channel_len;
478 uint32_t message_len;
479 unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
480 } clusterMsgDataPublish;
481
482 union clusterMsgData {
483 /* PING, MEET and PONG */
484 struct {
485 /* Array of N clusterMsgDataGossip structures */
486 clusterMsgDataGossip gossip[1];
487 } ping;
488
489 /* FAIL */
490 struct {
491 clusterMsgDataFail about;
492 } fail;
493
494 /* PUBLISH */
495 struct {
496 clusterMsgDataPublish msg;
497 } publish;
498 };
499
500 typedef struct {
501 uint32_t totlen; /* Total length of this message */
502 uint16_t type; /* Message type */
503 uint16_t count; /* Only used for some kind of messages. */
504 char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
505 unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
506 char slaveof[REDIS_CLUSTER_NAMELEN];
507 char configdigest[32];
508 uint16_t port; /* Sender TCP base port */
509 unsigned char state; /* Cluster state from the POV of the sender */
510 unsigned char notused[5]; /* Reserved for future use. For alignment. */
511 union clusterMsgData data;
512 } clusterMsg;
513
514 /*-----------------------------------------------------------------------------
515 * Global server state
516 *----------------------------------------------------------------------------*/
517
518 struct redisServer {
519 /* General */
520 redisDb *db;
521 dict *commands; /* Command table hahs table */
522 aeEventLoop *el;
523 unsigned lruclock:22; /* Clock incrementing every minute, for LRU */
524 unsigned lruclock_padding:10;
525 int shutdown_asap; /* SHUTDOWN needed ASAP */
526 int activerehashing; /* Incremental rehash in serverCron() */
527 char *requirepass; /* Pass for AUTH command, or NULL */
528 char *pidfile; /* PID file path */
529 /* Networking */
530 int port; /* TCP listening port */
531 char *bindaddr; /* Bind address or NULL */
532 char *unixsocket; /* UNIX socket path */
533 mode_t unixsocketperm; /* UNIX socket permission */
534 int ipfd; /* TCP socket file descriptor */
535 int sofd; /* Unix socket file descriptor */
536 int cfd; /* Cluster bus lisetning socket */
537 list *clients; /* List of active clients */
538 list *clients_to_close; /* Clients to close asynchronously */
539 list *slaves, *monitors; /* List of slaves and MONITORs */
540 redisClient *current_client; /* Current client, only used on crash report */
541 char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
542 /* RDB / AOF loading information */
543 int loading; /* We are loading data from disk if true */
544 off_t loading_total_bytes;
545 off_t loading_loaded_bytes;
546 time_t loading_start_time;
547 /* Fast pointers to often looked up command */
548 struct redisCommand *delCommand, *multiCommand;
549 int cronloops; /* Number of times the cron function run */
550 time_t lastsave; /* Unix time of last save succeeede */
551 /* Fields used only for stats */
552 time_t stat_starttime; /* Server start time */
553 long long stat_numcommands; /* Number of processed commands */
554 long long stat_numconnections; /* Number of connections received */
555 long long stat_expiredkeys; /* Number of expired keys */
556 long long stat_evictedkeys; /* Number of evicted keys (maxmemory) */
557 long long stat_keyspace_hits; /* Number of successful lookups of keys */
558 long long stat_keyspace_misses; /* Number of failed lookups of keys */
559 size_t stat_peak_memory; /* Max used memory record */
560 long long stat_fork_time; /* Time needed to perform latets fork() */
561 long long stat_rejected_conn; /* Clients rejected because of maxclients */
562 list *slowlog; /* SLOWLOG list of commands */
563 long long slowlog_entry_id; /* SLOWLOG current entry ID */
564 long long slowlog_log_slower_than; /* SLOWLOG time limit (to get logged) */
565 unsigned long slowlog_max_len; /* SLOWLOG max number of items logged */
566 /* Configuration */
567 int verbosity; /* Loglevel in redis.conf */
568 int maxidletime; /* Client timeout in seconds */
569 size_t client_max_querybuf_len; /* Limit for client query buffer length */
570 int dbnum; /* Total number of configured DBs */
571 int daemonize; /* True if running as a daemon */
572 clientBufferLimitsConfig client_obuf_limits[REDIS_CLIENT_LIMIT_NUM_CLASSES];
573 /* AOF persistence */
574 int aof_state; /* REDIS_AOF_(ON|OFF|WAIT_REWRITE) */
575 int aof_fsync; /* Kind of fsync() policy */
576 char *aof_filename; /* Name of the AOF file */
577 int aof_no_fsync_on_rewrite; /* Don't fsync if a rewrite is in prog. */
578 int aof_rewrite_perc; /* Rewrite AOF if % growth is > M and... */
579 off_t aof_rewrite_min_size; /* the AOF file is at least N bytes. */
580 off_t aof_rewrite_base_size; /* AOF size on latest startup or rewrite. */
581 off_t aof_current_size; /* AOF current size. */
582 int aof_rewrite_scheduled; /* Rewrite once BGSAVE terminates. */
583 pid_t aof_child_pid; /* PID if rewriting process */
584 sds aof_rewrite_buf; /* buffer taken by parent during oppend only rewrite */
585 sds aof_buf; /* AOF buffer, written before entering the event loop */
586 int aof_fd; /* File descriptor of currently selected AOF file */
587 int aof_selected_db; /* Currently selected DB in AOF */
588 time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */
589 time_t aof_last_fsync; /* UNIX time of last fsync() */
590 /* RDB persistence */
591 long long dirty; /* Changes to DB from the last save */
592 long long dirty_before_bgsave; /* Used to restore dirty on failed BGSAVE */
593 pid_t rdb_child_pid; /* PID of RDB saving child */
594 struct saveparam *saveparams; /* Save points array for RDB */
595 int saveparamslen; /* Number of saving points */
596 char *rdb_filename; /* Name of RDB file */
597 int rdb_compression; /* Use compression in RDB? */
598 /* Logging */
599 char *logfile; /* Path of log file */
600 int syslog_enabled; /* Is syslog enabled? */
601 char *syslog_ident; /* Syslog ident */
602 int syslog_facility; /* Syslog facility */
603 /* Slave specific fields */
604 char *masterauth; /* AUTH with this password with master */
605 char *masterhost; /* Hostname of master */
606 int masterport; /* Port of master */
607 int repl_ping_slave_period; /* Master pings the salve every N seconds */
608 int repl_timeout; /* Timeout after N seconds of master idle */
609 redisClient *master; /* Client that is master for this slave */
610 int repl_syncio_timeout; /* Timeout for synchronous I/O calls */
611 int repl_state; /* Replication status if the instance is a slave */
612 off_t repl_transfer_left; /* Bytes left reading .rdb */
613 int repl_transfer_s; /* Slave -> Master SYNC socket */
614 int repl_transfer_fd; /* Slave -> Master SYNC temp file descriptor */
615 char *repl_transfer_tmpfile; /* Slave-> master SYNC temp file name */
616 time_t repl_transfer_lastio; /* Unix time of the latest read, for timeout */
617 int repl_serve_stale_data; /* Serve stale data when link is down? */
618 time_t repl_down_since; /* Unix time at which link with master went down */
619 /* Limits */
620 unsigned int maxclients; /* Max number of simultaneous clients */
621 unsigned long long maxmemory; /* Max number of memory bytes to use */
622 int maxmemory_policy; /* Policy for key evition */
623 int maxmemory_samples; /* Pricision of random sampling */
624 /* Blocked clients */
625 unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
626 list *unblocked_clients; /* list of clients to unblock before next loop */
627 /* Sort parameters - qsort_r() is only available under BSD so we
628 * have to take this state global, in order to pass it to sortCompare() */
629 int sort_desc;
630 int sort_alpha;
631 int sort_bypattern;
632 /* Zip structure config, see redis.conf for more information */
633 size_t hash_max_zipmap_entries;
634 size_t hash_max_zipmap_value;
635 size_t list_max_ziplist_entries;
636 size_t list_max_ziplist_value;
637 size_t set_max_intset_entries;
638 size_t zset_max_ziplist_entries;
639 size_t zset_max_ziplist_value;
640 time_t unixtime; /* Unix time sampled every second. */
641 /* Pubsub */
642 dict *pubsub_channels; /* Map channels to list of subscribed clients */
643 list *pubsub_patterns; /* A list of pubsub_patterns */
644 /* Cluster */
645 int cluster_enabled; /* Is cluster enabled? */
646 clusterState cluster; /* State of the cluster */
647 /* Scripting */
648 lua_State *lua; /* The Lua interpreter. We use just one for all clients */
649 redisClient *lua_client; /* The "fake client" to query Redis from Lua */
650 redisClient *lua_caller; /* The client running EVAL right now, or NULL */
651 dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
652 long long lua_time_limit; /* Script timeout in seconds */
653 long long lua_time_start; /* Start time of script */
654 int lua_write_dirty; /* True if a write command was called during the
655 execution of the current script. */
656 int lua_random_dirty; /* True if a random command was called during the
657 execution of the current script. */
658 int lua_timedout; /* True if we reached the time limit for script
659 execution. */
660 int lua_kill; /* Kill the script if true. */
661 /* Assert & bug reportign */
662 char *assert_failed;
663 char *assert_file;
664 int assert_line;
665 int bug_report_start; /* True if bug report header was already logged. */
666 };
667
668 typedef struct pubsubPattern {
669 redisClient *client;
670 robj *pattern;
671 } pubsubPattern;
672
673 typedef void redisCommandProc(redisClient *c);
674 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
675 struct redisCommand {
676 char *name;
677 redisCommandProc *proc;
678 int arity;
679 char *sflags; /* Flags as string represenation, one char per flag. */
680 int flags; /* The actual flags, obtained from the 'sflags' field. */
681 /* Use a function to determine keys arguments in a command line.
682 * Used for Redis Cluster redirect. */
683 redisGetKeysProc *getkeys_proc;
684 /* What keys should be loaded in background when calling this command? */
685 int firstkey; /* The first argument that's a key (0 = no keys) */
686 int lastkey; /* THe last argument that's a key */
687 int keystep; /* The step between first and last key */
688 long long microseconds, calls;
689 };
690
691 struct redisFunctionSym {
692 char *name;
693 unsigned long pointer;
694 };
695
696 typedef struct _redisSortObject {
697 robj *obj;
698 union {
699 double score;
700 robj *cmpobj;
701 } u;
702 } redisSortObject;
703
704 typedef struct _redisSortOperation {
705 int type;
706 robj *pattern;
707 } redisSortOperation;
708
709 /* Structure to hold list iteration abstraction. */
710 typedef struct {
711 robj *subject;
712 unsigned char encoding;
713 unsigned char direction; /* Iteration direction */
714 unsigned char *zi;
715 listNode *ln;
716 } listTypeIterator;
717
718 /* Structure for an entry while iterating over a list. */
719 typedef struct {
720 listTypeIterator *li;
721 unsigned char *zi; /* Entry in ziplist */
722 listNode *ln; /* Entry in linked list */
723 } listTypeEntry;
724
725 /* Structure to hold set iteration abstraction. */
726 typedef struct {
727 robj *subject;
728 int encoding;
729 int ii; /* intset iterator */
730 dictIterator *di;
731 } setTypeIterator;
732
733 /* Structure to hold hash iteration abstration. Note that iteration over
734 * hashes involves both fields and values. Because it is possible that
735 * not both are required, store pointers in the iterator to avoid
736 * unnecessary memory allocation for fields/values. */
737 typedef struct {
738 int encoding;
739 unsigned char *zi;
740 unsigned char *zk, *zv;
741 unsigned int zklen, zvlen;
742
743 dictIterator *di;
744 dictEntry *de;
745 } hashTypeIterator;
746
747 #define REDIS_HASH_KEY 1
748 #define REDIS_HASH_VALUE 2
749
750 /*-----------------------------------------------------------------------------
751 * Extern declarations
752 *----------------------------------------------------------------------------*/
753
754 extern struct redisServer server;
755 extern struct sharedObjectsStruct shared;
756 extern dictType setDictType;
757 extern dictType zsetDictType;
758 extern dictType clusterNodesDictType;
759 extern dictType dbDictType;
760 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
761 dictType hashDictType;
762
763 /*-----------------------------------------------------------------------------
764 * Functions prototypes
765 *----------------------------------------------------------------------------*/
766
767 /* Utils */
768 long long ustime(void);
769 long long mstime(void);
770
771 /* networking.c -- Networking and Client related operations */
772 redisClient *createClient(int fd);
773 void closeTimedoutClients(void);
774 void freeClient(redisClient *c);
775 void resetClient(redisClient *c);
776 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
777 void addReply(redisClient *c, robj *obj);
778 void *addDeferredMultiBulkLength(redisClient *c);
779 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
780 void addReplySds(redisClient *c, sds s);
781 void processInputBuffer(redisClient *c);
782 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
783 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
784 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
785 void addReplyBulk(redisClient *c, robj *obj);
786 void addReplyBulkCString(redisClient *c, char *s);
787 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
788 void addReplyBulkLongLong(redisClient *c, long long ll);
789 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
790 void addReply(redisClient *c, robj *obj);
791 void addReplySds(redisClient *c, sds s);
792 void addReplyError(redisClient *c, char *err);
793 void addReplyStatus(redisClient *c, char *status);
794 void addReplyDouble(redisClient *c, double d);
795 void addReplyLongLong(redisClient *c, long long ll);
796 void addReplyMultiBulkLen(redisClient *c, long length);
797 void copyClientOutputBuffer(redisClient *dst, redisClient *src);
798 void *dupClientReplyValue(void *o);
799 void getClientsMaxBuffers(unsigned long *longest_output_list,
800 unsigned long *biggest_input_buffer);
801 sds getClientInfoString(redisClient *client);
802 sds getAllClientsInfoString(void);
803 void rewriteClientCommandVector(redisClient *c, int argc, ...);
804 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
805 unsigned long getClientOutputBufferMemoryUsage(redisClient *c);
806 void freeClientsInAsyncFreeQueue(void);
807 void asyncCloseClientOnOutputBufferLimitReached(redisClient *c);
808
809 #ifdef __GNUC__
810 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
811 __attribute__((format(printf, 2, 3)));
812 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
813 __attribute__((format(printf, 2, 3)));
814 #else
815 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
816 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
817 #endif
818
819 /* List data type */
820 void listTypeTryConversion(robj *subject, robj *value);
821 void listTypePush(robj *subject, robj *value, int where);
822 robj *listTypePop(robj *subject, int where);
823 unsigned long listTypeLength(robj *subject);
824 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
825 void listTypeReleaseIterator(listTypeIterator *li);
826 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
827 robj *listTypeGet(listTypeEntry *entry);
828 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
829 int listTypeEqual(listTypeEntry *entry, robj *o);
830 void listTypeDelete(listTypeEntry *entry);
831 void listTypeConvert(robj *subject, int enc);
832 void unblockClientWaitingData(redisClient *c);
833 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
834 void popGenericCommand(redisClient *c, int where);
835
836 /* MULTI/EXEC/WATCH... */
837 void unwatchAllKeys(redisClient *c);
838 void initClientMultiState(redisClient *c);
839 void freeClientMultiState(redisClient *c);
840 void queueMultiCommand(redisClient *c);
841 void touchWatchedKey(redisDb *db, robj *key);
842 void touchWatchedKeysOnFlush(int dbid);
843
844 /* Redis object implementation */
845 void decrRefCount(void *o);
846 void incrRefCount(robj *o);
847 robj *resetRefCount(robj *obj);
848 void freeStringObject(robj *o);
849 void freeListObject(robj *o);
850 void freeSetObject(robj *o);
851 void freeZsetObject(robj *o);
852 void freeHashObject(robj *o);
853 robj *createObject(int type, void *ptr);
854 robj *createStringObject(char *ptr, size_t len);
855 robj *dupStringObject(robj *o);
856 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
857 robj *tryObjectEncoding(robj *o);
858 robj *getDecodedObject(robj *o);
859 size_t stringObjectLen(robj *o);
860 robj *createStringObjectFromLongLong(long long value);
861 robj *createStringObjectFromLongDouble(long double value);
862 robj *createListObject(void);
863 robj *createZiplistObject(void);
864 robj *createSetObject(void);
865 robj *createIntsetObject(void);
866 robj *createHashObject(void);
867 robj *createZsetObject(void);
868 robj *createZsetZiplistObject(void);
869 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
870 int checkType(redisClient *c, robj *o, int type);
871 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
872 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
873 int getLongLongFromObject(robj *o, long long *target);
874 int getLongDoubleFromObject(robj *o, long double *target);
875 int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
876 char *strEncoding(int encoding);
877 int compareStringObjects(robj *a, robj *b);
878 int equalStringObjects(robj *a, robj *b);
879 unsigned long estimateObjectIdleTime(robj *o);
880
881 /* Synchronous I/O with timeout */
882 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
883 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
884 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
885
886 /* Replication */
887 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
888 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
889 void updateSlavesWaitingBgsave(int bgsaveerr);
890 void replicationCron(void);
891
892 /* Generic persistence functions */
893 void startLoading(FILE *fp);
894 void loadingProgress(off_t pos);
895 void stopLoading(void);
896
897 /* RDB persistence */
898 #include "rdb.h"
899
900 /* AOF persistence */
901 void flushAppendOnlyFile(int force);
902 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
903 void aofRemoveTempFile(pid_t childpid);
904 int rewriteAppendOnlyFileBackground(void);
905 int loadAppendOnlyFile(char *filename);
906 void stopAppendOnly(void);
907 int startAppendOnly(void);
908 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
909
910 /* Sorted sets data type */
911
912 /* Struct to hold a inclusive/exclusive range spec. */
913 typedef struct {
914 double min, max;
915 int minex, maxex; /* are min or max exclusive? */
916 } zrangespec;
917
918 zskiplist *zslCreate(void);
919 void zslFree(zskiplist *zsl);
920 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
921 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
922 int zslDelete(zskiplist *zsl, double score, robj *obj);
923 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
924 double zzlGetScore(unsigned char *sptr);
925 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
926 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
927 unsigned int zsetLength(robj *zobj);
928 void zsetConvert(robj *zobj, int encoding);
929
930 /* Core functions */
931 void freeMemoryIfNeeded(void);
932 int processCommand(redisClient *c);
933 void setupSignalHandlers(void);
934 struct redisCommand *lookupCommand(sds name);
935 struct redisCommand *lookupCommandByCString(char *s);
936 void call(redisClient *c);
937 int prepareForShutdown();
938 void redisLog(int level, const char *fmt, ...);
939 void redisLogRaw(int level, const char *msg);
940 void usage();
941 void updateDictResizePolicy(void);
942 int htNeedsResize(dict *dict);
943 void oom(const char *msg);
944 void populateCommandTable(void);
945 void resetCommandTableStats(void);
946
947 /* Set data type */
948 robj *setTypeCreate(robj *value);
949 int setTypeAdd(robj *subject, robj *value);
950 int setTypeRemove(robj *subject, robj *value);
951 int setTypeIsMember(robj *subject, robj *value);
952 setTypeIterator *setTypeInitIterator(robj *subject);
953 void setTypeReleaseIterator(setTypeIterator *si);
954 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
955 robj *setTypeNextObject(setTypeIterator *si);
956 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
957 unsigned long setTypeSize(robj *subject);
958 void setTypeConvert(robj *subject, int enc);
959
960 /* Hash data type */
961 void convertToRealHash(robj *o);
962 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
963 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
964 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
965 robj *hashTypeGetObject(robj *o, robj *key);
966 int hashTypeExists(robj *o, robj *key);
967 int hashTypeSet(robj *o, robj *key, robj *value);
968 int hashTypeDelete(robj *o, robj *key);
969 unsigned long hashTypeLength(robj *o);
970 hashTypeIterator *hashTypeInitIterator(robj *subject);
971 void hashTypeReleaseIterator(hashTypeIterator *hi);
972 int hashTypeNext(hashTypeIterator *hi);
973 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
974 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
975 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
976
977 /* Pub / Sub */
978 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
979 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
980 void freePubsubPattern(void *p);
981 int listMatchPubsubPattern(void *a, void *b);
982 int pubsubPublishMessage(robj *channel, robj *message);
983
984 /* Configuration */
985 void loadServerConfig(char *filename, char *options);
986 void appendServerSaveParams(time_t seconds, int changes);
987 void resetServerSaveParams();
988
989 /* db.c -- Keyspace access API */
990 int removeExpire(redisDb *db, robj *key);
991 void propagateExpire(redisDb *db, robj *key);
992 int expireIfNeeded(redisDb *db, robj *key);
993 long long getExpire(redisDb *db, robj *key);
994 void setExpire(redisDb *db, robj *key, long long when);
995 robj *lookupKey(redisDb *db, robj *key);
996 robj *lookupKeyRead(redisDb *db, robj *key);
997 robj *lookupKeyWrite(redisDb *db, robj *key);
998 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
999 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
1000 void dbAdd(redisDb *db, robj *key, robj *val);
1001 void dbOverwrite(redisDb *db, robj *key, robj *val);
1002 void setKey(redisDb *db, robj *key, robj *val);
1003 int dbExists(redisDb *db, robj *key);
1004 robj *dbRandomKey(redisDb *db);
1005 int dbDelete(redisDb *db, robj *key);
1006 long long emptyDb();
1007 int selectDb(redisClient *c, int id);
1008 void signalModifiedKey(redisDb *db, robj *key);
1009 void signalFlushedDb(int dbid);
1010 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
1011
1012 /* API to get key arguments from commands */
1013 #define REDIS_GETKEYS_ALL 0
1014 #define REDIS_GETKEYS_PRELOAD 1
1015 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
1016 void getKeysFreeResult(int *result);
1017 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1018 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1019 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1020
1021 /* Cluster */
1022 void clusterInit(void);
1023 unsigned short crc16(const char *buf, int len);
1024 unsigned int keyHashSlot(char *key, int keylen);
1025 clusterNode *createClusterNode(char *nodename, int flags);
1026 int clusterAddNode(clusterNode *node);
1027 void clusterCron(void);
1028 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
1029 void clusterPropagatePublish(robj *channel, robj *message);
1030
1031 /* Scripting */
1032 void scriptingInit(void);
1033
1034 /* Git SHA1 */
1035 char *redisGitSHA1(void);
1036 char *redisGitDirty(void);
1037
1038 /* Commands prototypes */
1039 void authCommand(redisClient *c);
1040 void pingCommand(redisClient *c);
1041 void echoCommand(redisClient *c);
1042 void setCommand(redisClient *c);
1043 void setnxCommand(redisClient *c);
1044 void setexCommand(redisClient *c);
1045 void psetexCommand(redisClient *c);
1046 void getCommand(redisClient *c);
1047 void delCommand(redisClient *c);
1048 void existsCommand(redisClient *c);
1049 void setbitCommand(redisClient *c);
1050 void getbitCommand(redisClient *c);
1051 void setrangeCommand(redisClient *c);
1052 void getrangeCommand(redisClient *c);
1053 void incrCommand(redisClient *c);
1054 void decrCommand(redisClient *c);
1055 void incrbyCommand(redisClient *c);
1056 void decrbyCommand(redisClient *c);
1057 void incrbyfloatCommand(redisClient *c);
1058 void selectCommand(redisClient *c);
1059 void randomkeyCommand(redisClient *c);
1060 void keysCommand(redisClient *c);
1061 void dbsizeCommand(redisClient *c);
1062 void lastsaveCommand(redisClient *c);
1063 void saveCommand(redisClient *c);
1064 void bgsaveCommand(redisClient *c);
1065 void bgrewriteaofCommand(redisClient *c);
1066 void shutdownCommand(redisClient *c);
1067 void moveCommand(redisClient *c);
1068 void renameCommand(redisClient *c);
1069 void renamenxCommand(redisClient *c);
1070 void lpushCommand(redisClient *c);
1071 void rpushCommand(redisClient *c);
1072 void lpushxCommand(redisClient *c);
1073 void rpushxCommand(redisClient *c);
1074 void linsertCommand(redisClient *c);
1075 void lpopCommand(redisClient *c);
1076 void rpopCommand(redisClient *c);
1077 void llenCommand(redisClient *c);
1078 void lindexCommand(redisClient *c);
1079 void lrangeCommand(redisClient *c);
1080 void ltrimCommand(redisClient *c);
1081 void typeCommand(redisClient *c);
1082 void lsetCommand(redisClient *c);
1083 void saddCommand(redisClient *c);
1084 void sremCommand(redisClient *c);
1085 void smoveCommand(redisClient *c);
1086 void sismemberCommand(redisClient *c);
1087 void scardCommand(redisClient *c);
1088 void spopCommand(redisClient *c);
1089 void srandmemberCommand(redisClient *c);
1090 void sinterCommand(redisClient *c);
1091 void sinterstoreCommand(redisClient *c);
1092 void sunionCommand(redisClient *c);
1093 void sunionstoreCommand(redisClient *c);
1094 void sdiffCommand(redisClient *c);
1095 void sdiffstoreCommand(redisClient *c);
1096 void syncCommand(redisClient *c);
1097 void flushdbCommand(redisClient *c);
1098 void flushallCommand(redisClient *c);
1099 void sortCommand(redisClient *c);
1100 void lremCommand(redisClient *c);
1101 void rpoplpushCommand(redisClient *c);
1102 void infoCommand(redisClient *c);
1103 void mgetCommand(redisClient *c);
1104 void monitorCommand(redisClient *c);
1105 void expireCommand(redisClient *c);
1106 void expireatCommand(redisClient *c);
1107 void pexpireCommand(redisClient *c);
1108 void pexpireatCommand(redisClient *c);
1109 void getsetCommand(redisClient *c);
1110 void ttlCommand(redisClient *c);
1111 void pttlCommand(redisClient *c);
1112 void persistCommand(redisClient *c);
1113 void slaveofCommand(redisClient *c);
1114 void debugCommand(redisClient *c);
1115 void msetCommand(redisClient *c);
1116 void msetnxCommand(redisClient *c);
1117 void zaddCommand(redisClient *c);
1118 void zincrbyCommand(redisClient *c);
1119 void zrangeCommand(redisClient *c);
1120 void zrangebyscoreCommand(redisClient *c);
1121 void zrevrangebyscoreCommand(redisClient *c);
1122 void zcountCommand(redisClient *c);
1123 void zrevrangeCommand(redisClient *c);
1124 void zcardCommand(redisClient *c);
1125 void zremCommand(redisClient *c);
1126 void zscoreCommand(redisClient *c);
1127 void zremrangebyscoreCommand(redisClient *c);
1128 void multiCommand(redisClient *c);
1129 void execCommand(redisClient *c);
1130 void discardCommand(redisClient *c);
1131 void blpopCommand(redisClient *c);
1132 void brpopCommand(redisClient *c);
1133 void brpoplpushCommand(redisClient *c);
1134 void appendCommand(redisClient *c);
1135 void strlenCommand(redisClient *c);
1136 void zrankCommand(redisClient *c);
1137 void zrevrankCommand(redisClient *c);
1138 void hsetCommand(redisClient *c);
1139 void hsetnxCommand(redisClient *c);
1140 void hgetCommand(redisClient *c);
1141 void hmsetCommand(redisClient *c);
1142 void hmgetCommand(redisClient *c);
1143 void hdelCommand(redisClient *c);
1144 void hlenCommand(redisClient *c);
1145 void zremrangebyrankCommand(redisClient *c);
1146 void zunionstoreCommand(redisClient *c);
1147 void zinterstoreCommand(redisClient *c);
1148 void hkeysCommand(redisClient *c);
1149 void hvalsCommand(redisClient *c);
1150 void hgetallCommand(redisClient *c);
1151 void hexistsCommand(redisClient *c);
1152 void configCommand(redisClient *c);
1153 void hincrbyCommand(redisClient *c);
1154 void hincrbyfloatCommand(redisClient *c);
1155 void subscribeCommand(redisClient *c);
1156 void unsubscribeCommand(redisClient *c);
1157 void psubscribeCommand(redisClient *c);
1158 void punsubscribeCommand(redisClient *c);
1159 void publishCommand(redisClient *c);
1160 void watchCommand(redisClient *c);
1161 void unwatchCommand(redisClient *c);
1162 void clusterCommand(redisClient *c);
1163 void restoreCommand(redisClient *c);
1164 void migrateCommand(redisClient *c);
1165 void askingCommand(redisClient *c);
1166 void dumpCommand(redisClient *c);
1167 void objectCommand(redisClient *c);
1168 void clientCommand(redisClient *c);
1169 void evalCommand(redisClient *c);
1170 void evalShaCommand(redisClient *c);
1171 void scriptCommand(redisClient *c);
1172
1173 #if defined(__GNUC__)
1174 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1175 void free(void *ptr) __attribute__ ((deprecated));
1176 void *malloc(size_t size) __attribute__ ((deprecated));
1177 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1178 #endif
1179
1180 /* Debugging stuff */
1181 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1182 void _redisAssert(char *estr, char *file, int line);
1183 void _redisPanic(char *msg, char *file, int line);
1184 void bugReportStart(void);
1185 void redisLogObjectDebugInfo(robj *o);
1186 void sigsegvHandler(int sig, siginfo_t *info, void *secret);
1187 sds genRedisInfoString(char *section);
1188 #endif
Redis += OpenLDAP MDB