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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_SHARED_BULKHDR_LEN 32
50 #define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */
51 #define REDIS_AOF_REWRITE_PERC 100
52 #define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
53 #define REDIS_AOF_REWRITE_ITEMS_PER_CMD 64
54 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
55 #define REDIS_SLOWLOG_MAX_LEN 64
56 #define REDIS_MAX_CLIENTS 10000
57
58 #define REDIS_REPL_TIMEOUT 60
59 #define REDIS_REPL_PING_SLAVE_PERIOD 10
60
61 /* Protocol and I/O related defines */
62 #define REDIS_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */
63 #define REDIS_IOBUF_LEN (1024*16) /* Generic I/O buffer size */
64 #define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
65 #define REDIS_INLINE_MAX_SIZE (1024*64) /* Max size of inline reads */
66 #define REDIS_MBULK_BIG_ARG (1024*32)
67
68 /* Hash table parameters */
69 #define REDIS_HT_MINFILL 10 /* Minimal hash table fill 10% */
70
71 /* Command flags. Please check the command table defined in the redis.c file
72 * for more information about the meaning of every flag. */
73 #define REDIS_CMD_WRITE 1 /* "w" flag */
74 #define REDIS_CMD_READONLY 2 /* "r" flag */
75 #define REDIS_CMD_DENYOOM 4 /* "m" flag */
76 #define REDIS_CMD_FORCE_REPLICATION 8 /* "f" flag */
77 #define REDIS_CMD_ADMIN 16 /* "a" flag */
78 #define REDIS_CMD_PUBSUB 32 /* "p" flag */
79 #define REDIS_CMD_NOSCRIPT 64 /* "s" flag */
80 #define REDIS_CMD_RANDOM 128 /* "R" flag */
81 #define REDIS_CMD_SORT_FOR_SCRIPT 256 /* "S" flag */
82
83 /* Object types */
84 #define REDIS_STRING 0
85 #define REDIS_LIST 1
86 #define REDIS_SET 2
87 #define REDIS_ZSET 3
88 #define REDIS_HASH 4
89 #define REDIS_VMPOINTER 8
90
91 /* Objects encoding. Some kind of objects like Strings and Hashes can be
92 * internally represented in multiple ways. The 'encoding' field of the object
93 * is set to one of this fields for this object. */
94 #define REDIS_ENCODING_RAW 0 /* Raw representation */
95 #define REDIS_ENCODING_INT 1 /* Encoded as integer */
96 #define REDIS_ENCODING_HT 2 /* Encoded as hash table */
97 #define REDIS_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
98 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
99 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
100 #define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
101 #define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
102
103 /* Defines related to the dump file format. To store 32 bits lengths for short
104 * keys requires a lot of space, so we check the most significant 2 bits of
105 * the first byte to interpreter the length:
106 *
107 * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
108 * 01|000000 00000000 => 01, the len is 14 byes, 6 bits + 8 bits of next byte
109 * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
110 * 11|000000 this means: specially encoded object will follow. The six bits
111 * number specify the kind of object that follows.
112 * See the REDIS_RDB_ENC_* defines.
113 *
114 * Lenghts up to 63 are stored using a single byte, most DB keys, and may
115 * values, will fit inside. */
116 #define REDIS_RDB_6BITLEN 0
117 #define REDIS_RDB_14BITLEN 1
118 #define REDIS_RDB_32BITLEN 2
119 #define REDIS_RDB_ENCVAL 3
120 #define REDIS_RDB_LENERR UINT_MAX
121
122 /* When a length of a string object stored on disk has the first two bits
123 * set, the remaining two bits specify a special encoding for the object
124 * accordingly to the following defines: */
125 #define REDIS_RDB_ENC_INT8 0 /* 8 bit signed integer */
126 #define REDIS_RDB_ENC_INT16 1 /* 16 bit signed integer */
127 #define REDIS_RDB_ENC_INT32 2 /* 32 bit signed integer */
128 #define REDIS_RDB_ENC_LZF 3 /* string compressed with FASTLZ */
129
130 /* AOF states */
131 #define REDIS_AOF_OFF 0 /* AOF is off */
132 #define REDIS_AOF_ON 1 /* AOF is on */
133 #define REDIS_AOF_WAIT_REWRITE 2 /* AOF waits rewrite to start appending */
134
135 /* Client flags */
136 #define REDIS_SLAVE 1 /* This client is a slave server */
137 #define REDIS_MASTER 2 /* This client is a master server */
138 #define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
139 #define REDIS_MULTI 8 /* This client is in a MULTI context */
140 #define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
141 #define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
142 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
143 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
144 server.unblocked_clients */
145 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
146 #define REDIS_ASKING 1024 /* Client issued the ASKING command */
147 #define REDIS_CLOSE_ASAP 2048 /* Close this client ASAP */
148
149 /* Client request types */
150 #define REDIS_REQ_INLINE 1
151 #define REDIS_REQ_MULTIBULK 2
152
153 /* Client classes for client limits, currently used only for
154 * the max-client-output-buffer limit implementation. */
155 #define REDIS_CLIENT_LIMIT_CLASS_NORMAL 0
156 #define REDIS_CLIENT_LIMIT_CLASS_SLAVE 1
157 #define REDIS_CLIENT_LIMIT_CLASS_PUBSUB 2
158 #define REDIS_CLIENT_LIMIT_NUM_CLASSES 3
159
160 /* Slave replication state - slave side */
161 #define REDIS_REPL_NONE 0 /* No active replication */
162 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
163 #define REDIS_REPL_CONNECTING 2 /* Connecting to master */
164 #define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
165 #define REDIS_REPL_CONNECTED 4 /* Connected to master */
166
167 /* Synchronous read timeout - slave side */
168 #define REDIS_REPL_SYNCIO_TIMEOUT 5
169
170 /* Slave replication state - from the point of view of master
171 * Note that in SEND_BULK and ONLINE state the slave receives new updates
172 * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
173 * to start the next background saving in order to send updates to it. */
174 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
175 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
176 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
177 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
178
179 /* List related stuff */
180 #define REDIS_HEAD 0
181 #define REDIS_TAIL 1
182
183 /* Sort operations */
184 #define REDIS_SORT_GET 0
185 #define REDIS_SORT_ASC 1
186 #define REDIS_SORT_DESC 2
187 #define REDIS_SORTKEY_MAX 1024
188
189 /* Log levels */
190 #define REDIS_DEBUG 0
191 #define REDIS_VERBOSE 1
192 #define REDIS_NOTICE 2
193 #define REDIS_WARNING 3
194 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
195
196 /* Anti-warning macro... */
197 #define REDIS_NOTUSED(V) ((void) V)
198
199 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
200 #define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
201
202 /* Append only defines */
203 #define AOF_FSYNC_NO 0
204 #define AOF_FSYNC_ALWAYS 1
205 #define AOF_FSYNC_EVERYSEC 2
206
207 /* Zip structure related defaults */
208 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
209 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
210 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
211 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
212 #define REDIS_SET_MAX_INTSET_ENTRIES 512
213 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
214 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
215
216 /* Sets operations codes */
217 #define REDIS_OP_UNION 0
218 #define REDIS_OP_DIFF 1
219 #define REDIS_OP_INTER 2
220
221 /* Redis maxmemory strategies */
222 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
223 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
224 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
225 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
226 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
227 #define REDIS_MAXMEMORY_NO_EVICTION 5
228
229 /* Scripting */
230 #define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
231
232 /* Units */
233 #define UNIT_SECONDS 0
234 #define UNIT_MILLISECONDS 1
235
236 /* SHUTDOWN flags */
237 #define REDIS_SHUTDOWN_SAVE 1 /* Force SAVE on SHUTDOWN even if no save
238 points are configured. */
239 #define REDIS_SHUTDOWN_NOSAVE 2 /* Don't SAVE on SHUTDOWN. */
240
241 /* Command call flags, see call() function */
242 #define REDIS_CALL_NONE 0
243 #define REDIS_CALL_SLOWLOG 1
244 #define REDIS_CALL_STATS 2
245 #define REDIS_CALL_PROPAGATE 4
246 #define REDIS_CALL_FULL (REDIS_CALL_SLOWLOG | REDIS_CALL_STATS | REDIS_CALL_PROPAGATE)
247
248 /* We can print the stacktrace, so our assert is defined this way: */
249 #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
250 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
251 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
252
253 /*-----------------------------------------------------------------------------
254 * Data types
255 *----------------------------------------------------------------------------*/
256
257 /* A redis object, that is a type able to hold a string / list / set */
258
259 /* The actual Redis Object */
260 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
261 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
262 typedef struct redisObject {
263 unsigned type:4;
264 unsigned notused:2; /* Not used */
265 unsigned encoding:4;
266 unsigned lru:22; /* lru time (relative to server.lruclock) */
267 int refcount;
268 void *ptr;
269 } robj;
270
271 /* Macro used to initalize a Redis object allocated on the stack.
272 * Note that this macro is taken near the structure definition to make sure
273 * we'll update it when the structure is changed, to avoid bugs like
274 * bug #85 introduced exactly in this way. */
275 #define initStaticStringObject(_var,_ptr) do { \
276 _var.refcount = 1; \
277 _var.type = REDIS_STRING; \
278 _var.encoding = REDIS_ENCODING_RAW; \
279 _var.ptr = _ptr; \
280 } while(0);
281
282 typedef struct redisDb {
283 dict *dict; /* The keyspace for this DB */
284 dict *expires; /* Timeout of keys with a timeout set */
285 dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */
286 dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
287 int id;
288 } redisDb;
289
290 /* Client MULTI/EXEC state */
291 typedef struct multiCmd {
292 robj **argv;
293 int argc;
294 struct redisCommand *cmd;
295 } multiCmd;
296
297 typedef struct multiState {
298 multiCmd *commands; /* Array of MULTI commands */
299 int count; /* Total number of MULTI commands */
300 } multiState;
301
302 typedef struct blockingState {
303 robj **keys; /* The key we are waiting to terminate a blocking
304 * operation such as BLPOP. Otherwise NULL. */
305 int count; /* Number of blocking keys */
306 time_t timeout; /* Blocking operation timeout. If UNIX current time
307 * is >= timeout then the operation timed out. */
308 robj *target; /* The key that should receive the element,
309 * for BRPOPLPUSH. */
310 } blockingState;
311
312 /* With multiplexing we need to take per-clinet state.
313 * Clients are taken in a liked list. */
314 typedef struct redisClient {
315 int fd;
316 redisDb *db;
317 int dictid;
318 sds querybuf;
319 int argc;
320 robj **argv;
321 struct redisCommand *cmd, *lastcmd;
322 int reqtype;
323 int multibulklen; /* number of multi bulk arguments left to read */
324 long bulklen; /* length of bulk argument in multi bulk request */
325 list *reply;
326 unsigned long reply_bytes; /* Tot bytes of objects in reply list */
327 int sentlen;
328 time_t lastinteraction; /* time of the last interaction, used for timeout */
329 time_t obuf_soft_limit_reached_time;
330 int flags; /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
331 int slaveseldb; /* slave selected db, if this client is a slave */
332 int authenticated; /* when requirepass is non-NULL */
333 int replstate; /* replication state if this is a slave */
334 int repldbfd; /* replication DB file descriptor */
335 long repldboff; /* replication DB file offset */
336 off_t repldbsize; /* replication DB file size */
337 multiState mstate; /* MULTI/EXEC state */
338 blockingState bpop; /* blocking state */
339 list *io_keys; /* Keys this client is waiting to be loaded from the
340 * swap file in order to continue. */
341 list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
342 dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
343 list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
344
345 /* Response buffer */
346 int bufpos;
347 char buf[REDIS_REPLY_CHUNK_BYTES];
348 } redisClient;
349
350 struct saveparam {
351 time_t seconds;
352 int changes;
353 };
354
355 struct sharedObjectsStruct {
356 robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
357 *colon, *nullbulk, *nullmultibulk, *queued,
358 *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
359 *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,
360 *select0, *select1, *select2, *select3, *select4,
361 *select5, *select6, *select7, *select8, *select9,
362 *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk,
363 *psubscribebulk, *punsubscribebulk, *del,
364 *integers[REDIS_SHARED_INTEGERS],
365 *mbulkhdr[REDIS_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
366 *bulkhdr[REDIS_SHARED_BULKHDR_LEN]; /* "$<value>\r\n" */
367 };
368
369 /* ZSETs use a specialized version of Skiplists */
370 typedef struct zskiplistNode {
371 robj *obj;
372 double score;
373 struct zskiplistNode *backward;
374 struct zskiplistLevel {
375 struct zskiplistNode *forward;
376 unsigned int span;
377 } level[];
378 } zskiplistNode;
379
380 typedef struct zskiplist {
381 struct zskiplistNode *header, *tail;
382 unsigned long length;
383 int level;
384 } zskiplist;
385
386 typedef struct zset {
387 dict *dict;
388 zskiplist *zsl;
389 } zset;
390
391 typedef struct clientBufferLimitsConfig {
392 unsigned long long hard_limit_bytes;
393 unsigned long long soft_limit_bytes;
394 time_t soft_limit_seconds;
395 } clientBufferLimitsConfig;
396
397 /*-----------------------------------------------------------------------------
398 * Redis cluster data structures
399 *----------------------------------------------------------------------------*/
400
401 #define REDIS_CLUSTER_SLOTS 4096
402 #define REDIS_CLUSTER_OK 0 /* Everything looks ok */
403 #define REDIS_CLUSTER_FAIL 1 /* The cluster can't work */
404 #define REDIS_CLUSTER_NEEDHELP 2 /* The cluster works, but needs some help */
405 #define REDIS_CLUSTER_NAMELEN 40 /* sha1 hex length */
406 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
407
408 struct clusterNode;
409
410 /* clusterLink encapsulates everything needed to talk with a remote node. */
411 typedef struct clusterLink {
412 int fd; /* TCP socket file descriptor */
413 sds sndbuf; /* Packet send buffer */
414 sds rcvbuf; /* Packet reception buffer */
415 struct clusterNode *node; /* Node related to this link if any, or NULL */
416 } clusterLink;
417
418 /* Node flags */
419 #define REDIS_NODE_MASTER 1 /* The node is a master */
420 #define REDIS_NODE_SLAVE 2 /* The node is a slave */
421 #define REDIS_NODE_PFAIL 4 /* Failure? Need acknowledge */
422 #define REDIS_NODE_FAIL 8 /* The node is believed to be malfunctioning */
423 #define REDIS_NODE_MYSELF 16 /* This node is myself */
424 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
425 #define REDIS_NODE_NOADDR 64 /* We don't know the address of this node */
426 #define REDIS_NODE_MEET 128 /* Send a MEET message to this node */
427 #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"
428
429 struct clusterNode {
430 char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
431 int flags; /* REDIS_NODE_... */
432 unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
433 int numslaves; /* Number of slave nodes, if this is a master */
434 struct clusterNode **slaves; /* pointers to slave nodes */
435 struct clusterNode *slaveof; /* pointer to the master node */
436 time_t ping_sent; /* Unix time we sent latest ping */
437 time_t pong_received; /* Unix time we received the pong */
438 char *configdigest; /* Configuration digest of this node */
439 time_t configdigest_ts; /* Configuration digest timestamp */
440 char ip[16]; /* Latest known IP address of this node */
441 int port; /* Latest known port of this node */
442 clusterLink *link; /* TCP/IP link with this node */
443 };
444 typedef struct clusterNode clusterNode;
445
446 typedef struct {
447 char *configfile;
448 clusterNode *myself; /* This node */
449 int state; /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
450 int node_timeout;
451 dict *nodes; /* Hash table of name -> clusterNode structures */
452 clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
453 clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
454 clusterNode *slots[REDIS_CLUSTER_SLOTS];
455 zskiplist *slots_to_keys;
456 } clusterState;
457
458 /* Redis cluster messages header */
459
460 /* Note that the PING, PONG and MEET messages are actually the same exact
461 * kind of packet. PONG is the reply to ping, in the extact format as a PING,
462 * while MEET is a special PING that forces the receiver to add the sender
463 * as a node (if it is not already in the list). */
464 #define CLUSTERMSG_TYPE_PING 0 /* Ping */
465 #define CLUSTERMSG_TYPE_PONG 1 /* Pong (reply to Ping) */
466 #define CLUSTERMSG_TYPE_MEET 2 /* Meet "let's join" message */
467 #define CLUSTERMSG_TYPE_FAIL 3 /* Mark node xxx as failing */
468 #define CLUSTERMSG_TYPE_PUBLISH 4 /* Pub/Sub Publish propatagion */
469
470 /* Initially we don't know our "name", but we'll find it once we connect
471 * to the first node, using the getsockname() function. Then we'll use this
472 * address for all the next messages. */
473 typedef struct {
474 char nodename[REDIS_CLUSTER_NAMELEN];
475 uint32_t ping_sent;
476 uint32_t pong_received;
477 char ip[16]; /* IP address last time it was seen */
478 uint16_t port; /* port last time it was seen */
479 uint16_t flags;
480 uint32_t notused; /* for 64 bit alignment */
481 } clusterMsgDataGossip;
482
483 typedef struct {
484 char nodename[REDIS_CLUSTER_NAMELEN];
485 } clusterMsgDataFail;
486
487 typedef struct {
488 uint32_t channel_len;
489 uint32_t message_len;
490 unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
491 } clusterMsgDataPublish;
492
493 union clusterMsgData {
494 /* PING, MEET and PONG */
495 struct {
496 /* Array of N clusterMsgDataGossip structures */
497 clusterMsgDataGossip gossip[1];
498 } ping;
499
500 /* FAIL */
501 struct {
502 clusterMsgDataFail about;
503 } fail;
504
505 /* PUBLISH */
506 struct {
507 clusterMsgDataPublish msg;
508 } publish;
509 };
510
511 typedef struct {
512 uint32_t totlen; /* Total length of this message */
513 uint16_t type; /* Message type */
514 uint16_t count; /* Only used for some kind of messages. */
515 char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
516 unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
517 char slaveof[REDIS_CLUSTER_NAMELEN];
518 char configdigest[32];
519 uint16_t port; /* Sender TCP base port */
520 unsigned char state; /* Cluster state from the POV of the sender */
521 unsigned char notused[5]; /* Reserved for future use. For alignment. */
522 union clusterMsgData data;
523 } clusterMsg;
524
525 /*-----------------------------------------------------------------------------
526 * Global server state
527 *----------------------------------------------------------------------------*/
528
529 struct redisServer {
530 /* General */
531 redisDb *db;
532 dict *commands; /* Command table hahs table */
533 aeEventLoop *el;
534 unsigned lruclock:22; /* Clock incrementing every minute, for LRU */
535 unsigned lruclock_padding:10;
536 int shutdown_asap; /* SHUTDOWN needed ASAP */
537 int activerehashing; /* Incremental rehash in serverCron() */
538 char *requirepass; /* Pass for AUTH command, or NULL */
539 char *pidfile; /* PID file path */
540 int arch_bits; /* 32 or 64 depending on sizeof(long) */
541 /* Networking */
542 int port; /* TCP listening port */
543 char *bindaddr; /* Bind address or NULL */
544 char *unixsocket; /* UNIX socket path */
545 mode_t unixsocketperm; /* UNIX socket permission */
546 int ipfd; /* TCP socket file descriptor */
547 int sofd; /* Unix socket file descriptor */
548 int cfd; /* Cluster bus lisetning socket */
549 list *clients; /* List of active clients */
550 list *clients_to_close; /* Clients to close asynchronously */
551 list *slaves, *monitors; /* List of slaves and MONITORs */
552 redisClient *current_client; /* Current client, only used on crash report */
553 char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
554 /* RDB / AOF loading information */
555 int loading; /* We are loading data from disk if true */
556 off_t loading_total_bytes;
557 off_t loading_loaded_bytes;
558 time_t loading_start_time;
559 /* Fast pointers to often looked up command */
560 struct redisCommand *delCommand, *multiCommand;
561 int cronloops; /* Number of times the cron function run */
562 time_t lastsave; /* Unix time of last save succeeede */
563 /* Fields used only for stats */
564 time_t stat_starttime; /* Server start time */
565 long long stat_numcommands; /* Number of processed commands */
566 long long stat_numconnections; /* Number of connections received */
567 long long stat_expiredkeys; /* Number of expired keys */
568 long long stat_evictedkeys; /* Number of evicted keys (maxmemory) */
569 long long stat_keyspace_hits; /* Number of successful lookups of keys */
570 long long stat_keyspace_misses; /* Number of failed lookups of keys */
571 size_t stat_peak_memory; /* Max used memory record */
572 long long stat_fork_time; /* Time needed to perform latets fork() */
573 long long stat_rejected_conn; /* Clients rejected because of maxclients */
574 list *slowlog; /* SLOWLOG list of commands */
575 long long slowlog_entry_id; /* SLOWLOG current entry ID */
576 long long slowlog_log_slower_than; /* SLOWLOG time limit (to get logged) */
577 unsigned long slowlog_max_len; /* SLOWLOG max number of items logged */
578 /* Configuration */
579 int verbosity; /* Loglevel in redis.conf */
580 int maxidletime; /* Client timeout in seconds */
581 size_t client_max_querybuf_len; /* Limit for client query buffer length */
582 int dbnum; /* Total number of configured DBs */
583 int daemonize; /* True if running as a daemon */
584 clientBufferLimitsConfig client_obuf_limits[REDIS_CLIENT_LIMIT_NUM_CLASSES];
585 /* AOF persistence */
586 int aof_state; /* REDIS_AOF_(ON|OFF|WAIT_REWRITE) */
587 int aof_fsync; /* Kind of fsync() policy */
588 char *aof_filename; /* Name of the AOF file */
589 int aof_no_fsync_on_rewrite; /* Don't fsync if a rewrite is in prog. */
590 int aof_rewrite_perc; /* Rewrite AOF if % growth is > M and... */
591 off_t aof_rewrite_min_size; /* the AOF file is at least N bytes. */
592 off_t aof_rewrite_base_size; /* AOF size on latest startup or rewrite. */
593 off_t aof_current_size; /* AOF current size. */
594 int aof_rewrite_scheduled; /* Rewrite once BGSAVE terminates. */
595 pid_t aof_child_pid; /* PID if rewriting process */
596 sds aof_rewrite_buf; /* buffer taken by parent during oppend only rewrite */
597 sds aof_buf; /* AOF buffer, written before entering the event loop */
598 int aof_fd; /* File descriptor of currently selected AOF file */
599 int aof_selected_db; /* Currently selected DB in AOF */
600 time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */
601 time_t aof_last_fsync; /* UNIX time of last fsync() */
602 /* RDB persistence */
603 long long dirty; /* Changes to DB from the last save */
604 long long dirty_before_bgsave; /* Used to restore dirty on failed BGSAVE */
605 pid_t rdb_child_pid; /* PID of RDB saving child */
606 struct saveparam *saveparams; /* Save points array for RDB */
607 int saveparamslen; /* Number of saving points */
608 char *rdb_filename; /* Name of RDB file */
609 int rdb_compression; /* Use compression in RDB? */
610 /* Logging */
611 char *logfile; /* Path of log file */
612 int syslog_enabled; /* Is syslog enabled? */
613 char *syslog_ident; /* Syslog ident */
614 int syslog_facility; /* Syslog facility */
615 /* Slave specific fields */
616 char *masterauth; /* AUTH with this password with master */
617 char *masterhost; /* Hostname of master */
618 int masterport; /* Port of master */
619 int repl_ping_slave_period; /* Master pings the salve every N seconds */
620 int repl_timeout; /* Timeout after N seconds of master idle */
621 redisClient *master; /* Client that is master for this slave */
622 int repl_syncio_timeout; /* Timeout for synchronous I/O calls */
623 int repl_state; /* Replication status if the instance is a slave */
624 off_t repl_transfer_left; /* Bytes left reading .rdb */
625 int repl_transfer_s; /* Slave -> Master SYNC socket */
626 int repl_transfer_fd; /* Slave -> Master SYNC temp file descriptor */
627 char *repl_transfer_tmpfile; /* Slave-> master SYNC temp file name */
628 time_t repl_transfer_lastio; /* Unix time of the latest read, for timeout */
629 int repl_serve_stale_data; /* Serve stale data when link is down? */
630 time_t repl_down_since; /* Unix time at which link with master went down */
631 /* Limits */
632 unsigned int maxclients; /* Max number of simultaneous clients */
633 unsigned long long maxmemory; /* Max number of memory bytes to use */
634 int maxmemory_policy; /* Policy for key evition */
635 int maxmemory_samples; /* Pricision of random sampling */
636 /* Blocked clients */
637 unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
638 list *unblocked_clients; /* list of clients to unblock before next loop */
639 /* Sort parameters - qsort_r() is only available under BSD so we
640 * have to take this state global, in order to pass it to sortCompare() */
641 int sort_dontsort;
642 int sort_desc;
643 int sort_alpha;
644 int sort_bypattern;
645 /* Zip structure config, see redis.conf for more information */
646 size_t hash_max_zipmap_entries;
647 size_t hash_max_zipmap_value;
648 size_t list_max_ziplist_entries;
649 size_t list_max_ziplist_value;
650 size_t set_max_intset_entries;
651 size_t zset_max_ziplist_entries;
652 size_t zset_max_ziplist_value;
653 time_t unixtime; /* Unix time sampled every second. */
654 /* Pubsub */
655 dict *pubsub_channels; /* Map channels to list of subscribed clients */
656 list *pubsub_patterns; /* A list of pubsub_patterns */
657 /* Cluster */
658 int cluster_enabled; /* Is cluster enabled? */
659 clusterState cluster; /* State of the cluster */
660 /* Scripting */
661 lua_State *lua; /* The Lua interpreter. We use just one for all clients */
662 redisClient *lua_client; /* The "fake client" to query Redis from Lua */
663 redisClient *lua_caller; /* The client running EVAL right now, or NULL */
664 dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
665 long long lua_time_limit; /* Script timeout in seconds */
666 long long lua_time_start; /* Start time of script */
667 int lua_write_dirty; /* True if a write command was called during the
668 execution of the current script. */
669 int lua_random_dirty; /* True if a random command was called during the
670 execution of the current script. */
671 int lua_timedout; /* True if we reached the time limit for script
672 execution. */
673 int lua_kill; /* Kill the script if true. */
674 /* Assert & bug reportign */
675 char *assert_failed;
676 char *assert_file;
677 int assert_line;
678 int bug_report_start; /* True if bug report header was already logged. */
679 };
680
681 typedef struct pubsubPattern {
682 redisClient *client;
683 robj *pattern;
684 } pubsubPattern;
685
686 typedef void redisCommandProc(redisClient *c);
687 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
688 struct redisCommand {
689 char *name;
690 redisCommandProc *proc;
691 int arity;
692 char *sflags; /* Flags as string represenation, one char per flag. */
693 int flags; /* The actual flags, obtained from the 'sflags' field. */
694 /* Use a function to determine keys arguments in a command line.
695 * Used for Redis Cluster redirect. */
696 redisGetKeysProc *getkeys_proc;
697 /* What keys should be loaded in background when calling this command? */
698 int firstkey; /* The first argument that's a key (0 = no keys) */
699 int lastkey; /* THe last argument that's a key */
700 int keystep; /* The step between first and last key */
701 long long microseconds, calls;
702 };
703
704 struct redisFunctionSym {
705 char *name;
706 unsigned long pointer;
707 };
708
709 typedef struct _redisSortObject {
710 robj *obj;
711 union {
712 double score;
713 robj *cmpobj;
714 } u;
715 } redisSortObject;
716
717 typedef struct _redisSortOperation {
718 int type;
719 robj *pattern;
720 } redisSortOperation;
721
722 /* Structure to hold list iteration abstraction. */
723 typedef struct {
724 robj *subject;
725 unsigned char encoding;
726 unsigned char direction; /* Iteration direction */
727 unsigned char *zi;
728 listNode *ln;
729 } listTypeIterator;
730
731 /* Structure for an entry while iterating over a list. */
732 typedef struct {
733 listTypeIterator *li;
734 unsigned char *zi; /* Entry in ziplist */
735 listNode *ln; /* Entry in linked list */
736 } listTypeEntry;
737
738 /* Structure to hold set iteration abstraction. */
739 typedef struct {
740 robj *subject;
741 int encoding;
742 int ii; /* intset iterator */
743 dictIterator *di;
744 } setTypeIterator;
745
746 /* Structure to hold hash iteration abstration. Note that iteration over
747 * hashes involves both fields and values. Because it is possible that
748 * not both are required, store pointers in the iterator to avoid
749 * unnecessary memory allocation for fields/values. */
750 typedef struct {
751 int encoding;
752 unsigned char *zi;
753 unsigned char *zk, *zv;
754 unsigned int zklen, zvlen;
755
756 dictIterator *di;
757 dictEntry *de;
758 } hashTypeIterator;
759
760 #define REDIS_HASH_KEY 1
761 #define REDIS_HASH_VALUE 2
762
763 /*-----------------------------------------------------------------------------
764 * Extern declarations
765 *----------------------------------------------------------------------------*/
766
767 extern struct redisServer server;
768 extern struct sharedObjectsStruct shared;
769 extern dictType setDictType;
770 extern dictType zsetDictType;
771 extern dictType clusterNodesDictType;
772 extern dictType dbDictType;
773 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
774 dictType hashDictType;
775
776 /*-----------------------------------------------------------------------------
777 * Functions prototypes
778 *----------------------------------------------------------------------------*/
779
780 /* Utils */
781 long long ustime(void);
782 long long mstime(void);
783
784 /* networking.c -- Networking and Client related operations */
785 redisClient *createClient(int fd);
786 void closeTimedoutClients(void);
787 void freeClient(redisClient *c);
788 void resetClient(redisClient *c);
789 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
790 void addReply(redisClient *c, robj *obj);
791 void *addDeferredMultiBulkLength(redisClient *c);
792 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
793 void addReplySds(redisClient *c, sds s);
794 void processInputBuffer(redisClient *c);
795 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
796 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
797 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
798 void addReplyBulk(redisClient *c, robj *obj);
799 void addReplyBulkCString(redisClient *c, char *s);
800 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
801 void addReplyBulkLongLong(redisClient *c, long long ll);
802 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
803 void addReply(redisClient *c, robj *obj);
804 void addReplySds(redisClient *c, sds s);
805 void addReplyError(redisClient *c, char *err);
806 void addReplyStatus(redisClient *c, char *status);
807 void addReplyDouble(redisClient *c, double d);
808 void addReplyLongLong(redisClient *c, long long ll);
809 void addReplyMultiBulkLen(redisClient *c, long length);
810 void copyClientOutputBuffer(redisClient *dst, redisClient *src);
811 void *dupClientReplyValue(void *o);
812 void getClientsMaxBuffers(unsigned long *longest_output_list,
813 unsigned long *biggest_input_buffer);
814 sds getClientInfoString(redisClient *client);
815 sds getAllClientsInfoString(void);
816 void rewriteClientCommandVector(redisClient *c, int argc, ...);
817 void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
818 unsigned long getClientOutputBufferMemoryUsage(redisClient *c);
819 void freeClientsInAsyncFreeQueue(void);
820 void asyncCloseClientOnOutputBufferLimitReached(redisClient *c);
821 int getClientLimitClassByName(char *name);
822 char *getClientLimitClassName(int class);
823
824 #ifdef __GNUC__
825 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
826 __attribute__((format(printf, 2, 3)));
827 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
828 __attribute__((format(printf, 2, 3)));
829 #else
830 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
831 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
832 #endif
833
834 /* List data type */
835 void listTypeTryConversion(robj *subject, robj *value);
836 void listTypePush(robj *subject, robj *value, int where);
837 robj *listTypePop(robj *subject, int where);
838 unsigned long listTypeLength(robj *subject);
839 listTypeIterator *listTypeInitIterator(robj *subject, long index, unsigned char direction);
840 void listTypeReleaseIterator(listTypeIterator *li);
841 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
842 robj *listTypeGet(listTypeEntry *entry);
843 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
844 int listTypeEqual(listTypeEntry *entry, robj *o);
845 void listTypeDelete(listTypeEntry *entry);
846 void listTypeConvert(robj *subject, int enc);
847 void unblockClientWaitingData(redisClient *c);
848 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
849 void popGenericCommand(redisClient *c, int where);
850
851 /* MULTI/EXEC/WATCH... */
852 void unwatchAllKeys(redisClient *c);
853 void initClientMultiState(redisClient *c);
854 void freeClientMultiState(redisClient *c);
855 void queueMultiCommand(redisClient *c);
856 void touchWatchedKey(redisDb *db, robj *key);
857 void touchWatchedKeysOnFlush(int dbid);
858
859 /* Redis object implementation */
860 void decrRefCount(void *o);
861 void incrRefCount(robj *o);
862 robj *resetRefCount(robj *obj);
863 void freeStringObject(robj *o);
864 void freeListObject(robj *o);
865 void freeSetObject(robj *o);
866 void freeZsetObject(robj *o);
867 void freeHashObject(robj *o);
868 robj *createObject(int type, void *ptr);
869 robj *createStringObject(char *ptr, size_t len);
870 robj *dupStringObject(robj *o);
871 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
872 robj *tryObjectEncoding(robj *o);
873 robj *getDecodedObject(robj *o);
874 size_t stringObjectLen(robj *o);
875 robj *createStringObjectFromLongLong(long long value);
876 robj *createStringObjectFromLongDouble(long double value);
877 robj *createListObject(void);
878 robj *createZiplistObject(void);
879 robj *createSetObject(void);
880 robj *createIntsetObject(void);
881 robj *createHashObject(void);
882 robj *createZsetObject(void);
883 robj *createZsetZiplistObject(void);
884 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
885 int checkType(redisClient *c, robj *o, int type);
886 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
887 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
888 int getLongLongFromObject(robj *o, long long *target);
889 int getLongDoubleFromObject(robj *o, long double *target);
890 int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
891 char *strEncoding(int encoding);
892 int compareStringObjects(robj *a, robj *b);
893 int equalStringObjects(robj *a, robj *b);
894 unsigned long estimateObjectIdleTime(robj *o);
895
896 /* Synchronous I/O with timeout */
897 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
898 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
899 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
900
901 /* Replication */
902 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
903 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
904 void updateSlavesWaitingBgsave(int bgsaveerr);
905 void replicationCron(void);
906
907 /* Generic persistence functions */
908 void startLoading(FILE *fp);
909 void loadingProgress(off_t pos);
910 void stopLoading(void);
911
912 /* RDB persistence */
913 #include "rdb.h"
914
915 /* AOF persistence */
916 void flushAppendOnlyFile(int force);
917 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
918 void aofRemoveTempFile(pid_t childpid);
919 int rewriteAppendOnlyFileBackground(void);
920 int loadAppendOnlyFile(char *filename);
921 void stopAppendOnly(void);
922 int startAppendOnly(void);
923 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
924
925 /* Sorted sets data type */
926
927 /* Struct to hold a inclusive/exclusive range spec. */
928 typedef struct {
929 double min, max;
930 int minex, maxex; /* are min or max exclusive? */
931 } zrangespec;
932
933 zskiplist *zslCreate(void);
934 void zslFree(zskiplist *zsl);
935 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
936 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
937 int zslDelete(zskiplist *zsl, double score, robj *obj);
938 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
939 double zzlGetScore(unsigned char *sptr);
940 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
941 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
942 unsigned int zsetLength(robj *zobj);
943 void zsetConvert(robj *zobj, int encoding);
944
945 /* Core functions */
946 void freeMemoryIfNeeded(void);
947 int processCommand(redisClient *c);
948 void setupSignalHandlers(void);
949 struct redisCommand *lookupCommand(sds name);
950 struct redisCommand *lookupCommandByCString(char *s);
951 void call(redisClient *c, int flags);
952 int prepareForShutdown();
953 void redisLog(int level, const char *fmt, ...);
954 void redisLogRaw(int level, const char *msg);
955 void usage();
956 void updateDictResizePolicy(void);
957 int htNeedsResize(dict *dict);
958 void oom(const char *msg);
959 void populateCommandTable(void);
960 void resetCommandTableStats(void);
961
962 /* Set data type */
963 robj *setTypeCreate(robj *value);
964 int setTypeAdd(robj *subject, robj *value);
965 int setTypeRemove(robj *subject, robj *value);
966 int setTypeIsMember(robj *subject, robj *value);
967 setTypeIterator *setTypeInitIterator(robj *subject);
968 void setTypeReleaseIterator(setTypeIterator *si);
969 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
970 robj *setTypeNextObject(setTypeIterator *si);
971 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
972 unsigned long setTypeSize(robj *subject);
973 void setTypeConvert(robj *subject, int enc);
974
975 /* Hash data type */
976 void convertToRealHash(robj *o);
977 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
978 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
979 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
980 robj *hashTypeGetObject(robj *o, robj *key);
981 int hashTypeExists(robj *o, robj *key);
982 int hashTypeSet(robj *o, robj *key, robj *value);
983 int hashTypeDelete(robj *o, robj *key);
984 unsigned long hashTypeLength(robj *o);
985 hashTypeIterator *hashTypeInitIterator(robj *subject);
986 void hashTypeReleaseIterator(hashTypeIterator *hi);
987 int hashTypeNext(hashTypeIterator *hi);
988 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
989 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
990 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
991
992 /* Pub / Sub */
993 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
994 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
995 void freePubsubPattern(void *p);
996 int listMatchPubsubPattern(void *a, void *b);
997 int pubsubPublishMessage(robj *channel, robj *message);
998
999 /* Configuration */
1000 void loadServerConfig(char *filename, char *options);
1001 void appendServerSaveParams(time_t seconds, int changes);
1002 void resetServerSaveParams();
1003
1004 /* db.c -- Keyspace access API */
1005 int removeExpire(redisDb *db, robj *key);
1006 void propagateExpire(redisDb *db, robj *key);
1007 int expireIfNeeded(redisDb *db, robj *key);
1008 long long getExpire(redisDb *db, robj *key);
1009 void setExpire(redisDb *db, robj *key, long long when);
1010 robj *lookupKey(redisDb *db, robj *key);
1011 robj *lookupKeyRead(redisDb *db, robj *key);
1012 robj *lookupKeyWrite(redisDb *db, robj *key);
1013 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
1014 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
1015 void dbAdd(redisDb *db, robj *key, robj *val);
1016 void dbOverwrite(redisDb *db, robj *key, robj *val);
1017 void setKey(redisDb *db, robj *key, robj *val);
1018 int dbExists(redisDb *db, robj *key);
1019 robj *dbRandomKey(redisDb *db);
1020 int dbDelete(redisDb *db, robj *key);
1021 long long emptyDb();
1022 int selectDb(redisClient *c, int id);
1023 void signalModifiedKey(redisDb *db, robj *key);
1024 void signalFlushedDb(int dbid);
1025 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
1026
1027 /* API to get key arguments from commands */
1028 #define REDIS_GETKEYS_ALL 0
1029 #define REDIS_GETKEYS_PRELOAD 1
1030 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
1031 void getKeysFreeResult(int *result);
1032 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1033 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1034 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1035
1036 /* Cluster */
1037 void clusterInit(void);
1038 unsigned short crc16(const char *buf, int len);
1039 unsigned int keyHashSlot(char *key, int keylen);
1040 clusterNode *createClusterNode(char *nodename, int flags);
1041 int clusterAddNode(clusterNode *node);
1042 void clusterCron(void);
1043 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
1044 void clusterPropagatePublish(robj *channel, robj *message);
1045
1046 /* Scripting */
1047 void scriptingInit(void);
1048
1049 /* Git SHA1 */
1050 char *redisGitSHA1(void);
1051 char *redisGitDirty(void);
1052
1053 /* Commands prototypes */
1054 void authCommand(redisClient *c);
1055 void pingCommand(redisClient *c);
1056 void echoCommand(redisClient *c);
1057 void setCommand(redisClient *c);
1058 void setnxCommand(redisClient *c);
1059 void setexCommand(redisClient *c);
1060 void psetexCommand(redisClient *c);
1061 void getCommand(redisClient *c);
1062 void delCommand(redisClient *c);
1063 void existsCommand(redisClient *c);
1064 void setbitCommand(redisClient *c);
1065 void getbitCommand(redisClient *c);
1066 void setrangeCommand(redisClient *c);
1067 void getrangeCommand(redisClient *c);
1068 void incrCommand(redisClient *c);
1069 void decrCommand(redisClient *c);
1070 void incrbyCommand(redisClient *c);
1071 void decrbyCommand(redisClient *c);
1072 void incrbyfloatCommand(redisClient *c);
1073 void selectCommand(redisClient *c);
1074 void randomkeyCommand(redisClient *c);
1075 void keysCommand(redisClient *c);
1076 void dbsizeCommand(redisClient *c);
1077 void lastsaveCommand(redisClient *c);
1078 void saveCommand(redisClient *c);
1079 void bgsaveCommand(redisClient *c);
1080 void bgrewriteaofCommand(redisClient *c);
1081 void shutdownCommand(redisClient *c);
1082 void moveCommand(redisClient *c);
1083 void renameCommand(redisClient *c);
1084 void renamenxCommand(redisClient *c);
1085 void lpushCommand(redisClient *c);
1086 void rpushCommand(redisClient *c);
1087 void lpushxCommand(redisClient *c);
1088 void rpushxCommand(redisClient *c);
1089 void linsertCommand(redisClient *c);
1090 void lpopCommand(redisClient *c);
1091 void rpopCommand(redisClient *c);
1092 void llenCommand(redisClient *c);
1093 void lindexCommand(redisClient *c);
1094 void lrangeCommand(redisClient *c);
1095 void ltrimCommand(redisClient *c);
1096 void typeCommand(redisClient *c);
1097 void lsetCommand(redisClient *c);
1098 void saddCommand(redisClient *c);
1099 void sremCommand(redisClient *c);
1100 void smoveCommand(redisClient *c);
1101 void sismemberCommand(redisClient *c);
1102 void scardCommand(redisClient *c);
1103 void spopCommand(redisClient *c);
1104 void srandmemberCommand(redisClient *c);
1105 void sinterCommand(redisClient *c);
1106 void sinterstoreCommand(redisClient *c);
1107 void sunionCommand(redisClient *c);
1108 void sunionstoreCommand(redisClient *c);
1109 void sdiffCommand(redisClient *c);
1110 void sdiffstoreCommand(redisClient *c);
1111 void syncCommand(redisClient *c);
1112 void flushdbCommand(redisClient *c);
1113 void flushallCommand(redisClient *c);
1114 void sortCommand(redisClient *c);
1115 void lremCommand(redisClient *c);
1116 void rpoplpushCommand(redisClient *c);
1117 void infoCommand(redisClient *c);
1118 void mgetCommand(redisClient *c);
1119 void monitorCommand(redisClient *c);
1120 void expireCommand(redisClient *c);
1121 void expireatCommand(redisClient *c);
1122 void pexpireCommand(redisClient *c);
1123 void pexpireatCommand(redisClient *c);
1124 void getsetCommand(redisClient *c);
1125 void ttlCommand(redisClient *c);
1126 void pttlCommand(redisClient *c);
1127 void persistCommand(redisClient *c);
1128 void slaveofCommand(redisClient *c);
1129 void debugCommand(redisClient *c);
1130 void msetCommand(redisClient *c);
1131 void msetnxCommand(redisClient *c);
1132 void zaddCommand(redisClient *c);
1133 void zincrbyCommand(redisClient *c);
1134 void zrangeCommand(redisClient *c);
1135 void zrangebyscoreCommand(redisClient *c);
1136 void zrevrangebyscoreCommand(redisClient *c);
1137 void zcountCommand(redisClient *c);
1138 void zrevrangeCommand(redisClient *c);
1139 void zcardCommand(redisClient *c);
1140 void zremCommand(redisClient *c);
1141 void zscoreCommand(redisClient *c);
1142 void zremrangebyscoreCommand(redisClient *c);
1143 void multiCommand(redisClient *c);
1144 void execCommand(redisClient *c);
1145 void discardCommand(redisClient *c);
1146 void blpopCommand(redisClient *c);
1147 void brpopCommand(redisClient *c);
1148 void brpoplpushCommand(redisClient *c);
1149 void appendCommand(redisClient *c);
1150 void strlenCommand(redisClient *c);
1151 void zrankCommand(redisClient *c);
1152 void zrevrankCommand(redisClient *c);
1153 void hsetCommand(redisClient *c);
1154 void hsetnxCommand(redisClient *c);
1155 void hgetCommand(redisClient *c);
1156 void hmsetCommand(redisClient *c);
1157 void hmgetCommand(redisClient *c);
1158 void hdelCommand(redisClient *c);
1159 void hlenCommand(redisClient *c);
1160 void zremrangebyrankCommand(redisClient *c);
1161 void zunionstoreCommand(redisClient *c);
1162 void zinterstoreCommand(redisClient *c);
1163 void hkeysCommand(redisClient *c);
1164 void hvalsCommand(redisClient *c);
1165 void hgetallCommand(redisClient *c);
1166 void hexistsCommand(redisClient *c);
1167 void configCommand(redisClient *c);
1168 void hincrbyCommand(redisClient *c);
1169 void hincrbyfloatCommand(redisClient *c);
1170 void subscribeCommand(redisClient *c);
1171 void unsubscribeCommand(redisClient *c);
1172 void psubscribeCommand(redisClient *c);
1173 void punsubscribeCommand(redisClient *c);
1174 void publishCommand(redisClient *c);
1175 void watchCommand(redisClient *c);
1176 void unwatchCommand(redisClient *c);
1177 void clusterCommand(redisClient *c);
1178 void restoreCommand(redisClient *c);
1179 void migrateCommand(redisClient *c);
1180 void askingCommand(redisClient *c);
1181 void dumpCommand(redisClient *c);
1182 void objectCommand(redisClient *c);
1183 void clientCommand(redisClient *c);
1184 void evalCommand(redisClient *c);
1185 void evalShaCommand(redisClient *c);
1186 void scriptCommand(redisClient *c);
1187
1188 #if defined(__GNUC__)
1189 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1190 void free(void *ptr) __attribute__ ((deprecated));
1191 void *malloc(size_t size) __attribute__ ((deprecated));
1192 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1193 #endif
1194
1195 /* Debugging stuff */
1196 void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
1197 void _redisAssert(char *estr, char *file, int line);
1198 void _redisPanic(char *msg, char *file, int line);
1199 void bugReportStart(void);
1200 void redisLogObjectDebugInfo(robj *o);
1201 void sigsegvHandler(int sig, siginfo_t *info, void *secret);
1202 sds genRedisInfoString(char *section);
1203 #endif
Redis += OpenLDAP MDB