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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
24 #include "ae.h" /* Event driven programming library */
25 #include "sds.h" /* Dynamic safe strings */
26 #include "dict.h" /* Hash tables */
27 #include "adlist.h" /* Linked lists */
28 #include "zmalloc.h" /* total memory usage aware version of malloc/free */
29 #include "anet.h" /* Networking the easy way */
30 #include "zipmap.h" /* Compact string -> string data structure */
31 #include "ziplist.h" /* Compact list data structure */
32 #include "intset.h" /* Compact integer set structure */
33 #include "version.h"
34 #include "util.h"
35
36 /* Error codes */
37 #define REDIS_OK 0
38 #define REDIS_ERR -1
39
40 /* Static server configuration */
41 #define REDIS_SERVERPORT 6379 /* TCP port */
42 #define REDIS_MAXIDLETIME (60*5) /* default client timeout */
43 #define REDIS_IOBUF_LEN 1024
44 #define REDIS_LOADBUF_LEN 1024
45 #define REDIS_STATIC_ARGS 8
46 #define REDIS_DEFAULT_DBNUM 16
47 #define REDIS_CONFIGLINE_MAX 1024
48 #define REDIS_MAX_SYNC_TIME 60 /* Slave can't take more to sync */
49 #define REDIS_EXPIRELOOKUPS_PER_CRON 10 /* lookup 10 expires per loop */
50 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
51 #define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */
52 #define REDIS_SHARED_INTEGERS 10000
53 #define REDIS_REPLY_CHUNK_BYTES (5*1500) /* 5 TCP packets with default MTU */
54 #define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */
55
56 /* Hash table parameters */
57 #define REDIS_HT_MINFILL 10 /* Minimal hash table fill 10% */
58
59 /* Command flags:
60 * REDIS_CMD_DENYOOM:
61 * Commands marked with this flag will return an error when 'maxmemory' is
62 * set and the server is using more than 'maxmemory' bytes of memory.
63 * In short: commands with this flag are denied on low memory conditions.
64 * REDIS_CMD_FORCE_REPLICATION:
65 * Force replication even if dirty is 0. */
66 #define REDIS_CMD_DENYOOM 4
67 #define REDIS_CMD_FORCE_REPLICATION 8
68
69 /* Object types */
70 #define REDIS_STRING 0
71 #define REDIS_LIST 1
72 #define REDIS_SET 2
73 #define REDIS_ZSET 3
74 #define REDIS_HASH 4
75 #define REDIS_VMPOINTER 8
76
77 /* Object types only used for persistence in .rdb files */
78 #define REDIS_HASH_ZIPMAP 9
79 #define REDIS_LIST_ZIPLIST 10
80 #define REDIS_SET_INTSET 11
81 #define REDIS_ZSET_ZIPLIST 12
82
83 /* Objects encoding. Some kind of objects like Strings and Hashes can be
84 * internally represented in multiple ways. The 'encoding' field of the object
85 * is set to one of this fields for this object. */
86 #define REDIS_ENCODING_RAW 0 /* Raw representation */
87 #define REDIS_ENCODING_INT 1 /* Encoded as integer */
88 #define REDIS_ENCODING_HT 2 /* Encoded as hash table */
89 #define REDIS_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
90 #define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
91 #define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
92 #define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
93 #define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
94
95 /* Object types only used for dumping to disk */
96 #define REDIS_EXPIRETIME 253
97 #define REDIS_SELECTDB 254
98 #define REDIS_EOF 255
99
100 /* Defines related to the dump file format. To store 32 bits lengths for short
101 * keys requires a lot of space, so we check the most significant 2 bits of
102 * the first byte to interpreter the length:
103 *
104 * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
105 * 01|000000 00000000 => 01, the len is 14 byes, 6 bits + 8 bits of next byte
106 * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
107 * 11|000000 this means: specially encoded object will follow. The six bits
108 * number specify the kind of object that follows.
109 * See the REDIS_RDB_ENC_* defines.
110 *
111 * Lenghts up to 63 are stored using a single byte, most DB keys, and may
112 * values, will fit inside. */
113 #define REDIS_RDB_6BITLEN 0
114 #define REDIS_RDB_14BITLEN 1
115 #define REDIS_RDB_32BITLEN 2
116 #define REDIS_RDB_ENCVAL 3
117 #define REDIS_RDB_LENERR UINT_MAX
118
119 /* When a length of a string object stored on disk has the first two bits
120 * set, the remaining two bits specify a special encoding for the object
121 * accordingly to the following defines: */
122 #define REDIS_RDB_ENC_INT8 0 /* 8 bit signed integer */
123 #define REDIS_RDB_ENC_INT16 1 /* 16 bit signed integer */
124 #define REDIS_RDB_ENC_INT32 2 /* 32 bit signed integer */
125 #define REDIS_RDB_ENC_LZF 3 /* string compressed with FASTLZ */
126
127 /* Scheduled IO opeations flags. */
128 #define REDIS_IO_LOAD 1
129 #define REDIS_IO_SAVE 2
130 #define REDIS_IO_LOADINPROG 4
131 #define REDIS_IO_SAVEINPROG 8
132
133 /* Generic IO flags */
134 #define REDIS_IO_ONLYLOADS 1
135 #define REDIS_IO_ASAP 2
136
137 #define REDIS_MAX_COMPLETED_JOBS_PROCESSED 1
138 #define REDIS_THREAD_STACK_SIZE (1024*1024*4)
139
140 /* Client flags */
141 #define REDIS_SLAVE 1 /* This client is a slave server */
142 #define REDIS_MASTER 2 /* This client is a master server */
143 #define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
144 #define REDIS_MULTI 8 /* This client is in a MULTI context */
145 #define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
146 #define REDIS_IO_WAIT 32 /* The client is waiting for Virtual Memory I/O */
147 #define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
148 #define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
149 #define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
150 server.unblocked_clients */
151 #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
152
153 /* Client request types */
154 #define REDIS_REQ_INLINE 1
155 #define REDIS_REQ_MULTIBULK 2
156
157 /* Slave replication state - slave side */
158 #define REDIS_REPL_NONE 0 /* No active replication */
159 #define REDIS_REPL_CONNECT 1 /* Must connect to master */
160 #define REDIS_REPL_TRANSFER 2 /* Receiving .rdb from master */
161 #define REDIS_REPL_CONNECTED 3 /* Connected to master */
162
163 /* Slave replication state - from the point of view of master
164 * Note that in SEND_BULK and ONLINE state the slave receives new updates
165 * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
166 * to start the next background saving in order to send updates to it. */
167 #define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
168 #define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
169 #define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
170 #define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
171
172 /* List related stuff */
173 #define REDIS_HEAD 0
174 #define REDIS_TAIL 1
175
176 /* Sort operations */
177 #define REDIS_SORT_GET 0
178 #define REDIS_SORT_ASC 1
179 #define REDIS_SORT_DESC 2
180 #define REDIS_SORTKEY_MAX 1024
181
182 /* Log levels */
183 #define REDIS_DEBUG 0
184 #define REDIS_VERBOSE 1
185 #define REDIS_NOTICE 2
186 #define REDIS_WARNING 3
187 #define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
188
189 /* Anti-warning macro... */
190 #define REDIS_NOTUSED(V) ((void) V)
191
192 #define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
193 #define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
194
195 /* Append only defines */
196 #define APPENDFSYNC_NO 0
197 #define APPENDFSYNC_ALWAYS 1
198 #define APPENDFSYNC_EVERYSEC 2
199
200 /* Zip structure related defaults */
201 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
202 #define REDIS_HASH_MAX_ZIPMAP_VALUE 64
203 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
204 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64
205 #define REDIS_SET_MAX_INTSET_ENTRIES 512
206 #define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
207 #define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
208
209 /* Sets operations codes */
210 #define REDIS_OP_UNION 0
211 #define REDIS_OP_DIFF 1
212 #define REDIS_OP_INTER 2
213
214 /* Redis maxmemory strategies */
215 #define REDIS_MAXMEMORY_VOLATILE_LRU 0
216 #define REDIS_MAXMEMORY_VOLATILE_TTL 1
217 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
218 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
219 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
220 #define REDIS_MAXMEMORY_NO_EVICTION 5
221
222 /* Diskstore background saving thread states */
223 #define REDIS_BGSAVE_THREAD_UNACTIVE 0
224 #define REDIS_BGSAVE_THREAD_ACTIVE 1
225 #define REDIS_BGSAVE_THREAD_DONE_OK 2
226 #define REDIS_BGSAVE_THREAD_DONE_ERR 3
227
228 /* We can print the stacktrace, so our assert is defined this way: */
229 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
230 #define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
231 void _redisAssert(char *estr, char *file, int line);
232 void _redisPanic(char *msg, char *file, int line);
233
234 /*-----------------------------------------------------------------------------
235 * Data types
236 *----------------------------------------------------------------------------*/
237
238 /* A redis object, that is a type able to hold a string / list / set */
239
240 /* The actual Redis Object */
241 #define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
242 #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
243 typedef struct redisObject {
244 unsigned type:4;
245 unsigned notused:2; /* Not used */
246 unsigned encoding:4;
247 unsigned lru:22; /* lru time (relative to server.lruclock) */
248 int refcount;
249 void *ptr;
250 /* VM fields are only allocated if VM is active, otherwise the
251 * object allocation function will just allocate
252 * sizeof(redisObjct) minus sizeof(redisObjectVM), so using
253 * Redis without VM active will not have any overhead. */
254 } robj;
255
256 /* The VM pointer structure - identifies an object in the swap file.
257 *
258 * This object is stored in place of the value
259 * object in the main key->value hash table representing a database.
260 * Note that the first fields (type, storage) are the same as the redisObject
261 * structure so that vmPointer strucuters can be accessed even when casted
262 * as redisObject structures.
263 *
264 * This is useful as we don't know if a value object is or not on disk, but we
265 * are always able to read obj->storage to check this. For vmPointer
266 * structures "type" is set to REDIS_VMPOINTER (even if without this field
267 * is still possible to check the kind of object from the value of 'storage').*/
268 typedef struct vmPointer {
269 unsigned type:4;
270 unsigned storage:2; /* REDIS_VM_SWAPPED or REDIS_VM_LOADING */
271 unsigned notused:26;
272 unsigned int vtype; /* type of the object stored in the swap file */
273 off_t page; /* the page at witch the object is stored on disk */
274 off_t usedpages; /* number of pages used on disk */
275 } vmpointer;
276
277 /* Macro used to initalize a Redis object allocated on the stack.
278 * Note that this macro is taken near the structure definition to make sure
279 * we'll update it when the structure is changed, to avoid bugs like
280 * bug #85 introduced exactly in this way. */
281 #define initStaticStringObject(_var,_ptr) do { \
282 _var.refcount = 1; \
283 _var.type = REDIS_STRING; \
284 _var.encoding = REDIS_ENCODING_RAW; \
285 _var.ptr = _ptr; \
286 } while(0);
287
288 typedef struct redisDb {
289 dict *dict; /* The keyspace for this DB */
290 dict *expires; /* Timeout of keys with a timeout set */
291 dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */
292 dict *io_keys; /* Keys with clients waiting for DS I/O */
293 dict *io_negcache; /* Negative caching for disk store */
294 dict *io_queued; /* Queued IO operations hash table */
295 dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
296 int id;
297 } redisDb;
298
299 /* Client MULTI/EXEC state */
300 typedef struct multiCmd {
301 robj **argv;
302 int argc;
303 struct redisCommand *cmd;
304 } multiCmd;
305
306 typedef struct multiState {
307 multiCmd *commands; /* Array of MULTI commands */
308 int count; /* Total number of MULTI commands */
309 } multiState;
310
311 typedef struct blockingState {
312 robj **keys; /* The key we are waiting to terminate a blocking
313 * operation such as BLPOP. Otherwise NULL. */
314 int count; /* Number of blocking keys */
315 time_t timeout; /* Blocking operation timeout. If UNIX current time
316 * is >= timeout then the operation timed out. */
317 robj *target; /* The key that should receive the element,
318 * for BRPOPLPUSH. */
319 } blockingState;
320
321 /* With multiplexing we need to take per-clinet state.
322 * Clients are taken in a liked list. */
323 typedef struct redisClient {
324 int fd;
325 redisDb *db;
326 int dictid;
327 sds querybuf;
328 int argc;
329 robj **argv;
330 int reqtype;
331 int multibulklen; /* number of multi bulk arguments left to read */
332 long bulklen; /* length of bulk argument in multi bulk request */
333 list *reply;
334 int sentlen;
335 time_t lastinteraction; /* time of the last interaction, used for timeout */
336 int flags; /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
337 int slaveseldb; /* slave selected db, if this client is a slave */
338 int authenticated; /* when requirepass is non-NULL */
339 int replstate; /* replication state if this is a slave */
340 int repldbfd; /* replication DB file descriptor */
341 long repldboff; /* replication DB file offset */
342 off_t repldbsize; /* replication DB file size */
343 multiState mstate; /* MULTI/EXEC state */
344 blockingState bpop; /* blocking state */
345 list *io_keys; /* Keys this client is waiting to be loaded from the
346 * swap file in order to continue. */
347 list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
348 dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
349 list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
350
351 /* Response buffer */
352 int bufpos;
353 char buf[REDIS_REPLY_CHUNK_BYTES];
354 } redisClient;
355
356 struct saveparam {
357 time_t seconds;
358 int changes;
359 };
360
361 struct sharedObjectsStruct {
362 robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
363 *colon, *nullbulk, *nullmultibulk, *queued,
364 *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
365 *outofrangeerr, *loadingerr, *plus,
366 *select0, *select1, *select2, *select3, *select4,
367 *select5, *select6, *select7, *select8, *select9,
368 *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
369 *mbulk4, *psubscribebulk, *punsubscribebulk,
370 *integers[REDIS_SHARED_INTEGERS];
371 };
372
373 /* ZSETs use a specialized version of Skiplists */
374 typedef struct zskiplistNode {
375 robj *obj;
376 double score;
377 struct zskiplistNode *backward;
378 struct zskiplistLevel {
379 struct zskiplistNode *forward;
380 unsigned int span;
381 } level[];
382 } zskiplistNode;
383
384 typedef struct zskiplist {
385 struct zskiplistNode *header, *tail;
386 unsigned long length;
387 int level;
388 } zskiplist;
389
390 typedef struct zset {
391 dict *dict;
392 zskiplist *zsl;
393 } zset;
394
395 /*-----------------------------------------------------------------------------
396 * Redis cluster data structures
397 *----------------------------------------------------------------------------*/
398
399 #define REDIS_CLUSTER_SLOTS 4096
400 #define REDIS_CLUSTER_OK 0 /* Everything looks ok */
401 #define REDIS_CLUSTER_FAIL 1 /* The cluster can't work */
402 #define REDIS_CLUSTER_NEEDHELP 2 /* The cluster works, but needs some help */
403 #define REDIS_CLUSTER_NAMELEN 40 /* sha1 hex length */
404 #define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
405
406 struct clusterNode;
407
408 /* clusterLink encapsulates everything needed to talk with a remote node. */
409 typedef struct clusterLink {
410 int fd; /* TCP socket file descriptor */
411 sds sndbuf; /* Packet send buffer */
412 sds rcvbuf; /* Packet reception buffer */
413 struct clusterNode *node; /* Node related to this link if any, or NULL */
414 } clusterLink;
415
416 /* Node flags */
417 #define REDIS_NODE_MASTER 1 /* The node is a master */
418 #define REDIS_NODE_SLAVE 2 /* The node is a slave */
419 #define REDIS_NODE_PFAIL 4 /* Failure? Need acknowledge */
420 #define REDIS_NODE_FAIL 8 /* The node is believed to be malfunctioning */
421 #define REDIS_NODE_MYSELF 16 /* This node is myself */
422 #define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
423 #define REDIS_NODE_NOADDR 64 /* We don't know the address of this node */
424 #define REDIS_NODE_MEET 128 /* Send a MEET message to this node */
425 #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"
426
427 struct clusterNode {
428 char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
429 int flags; /* REDIS_NODE_... */
430 unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
431 int numslaves; /* Number of slave nodes, if this is a master */
432 struct clusterNode **slaves; /* pointers to slave nodes */
433 struct clusterNode *slaveof; /* pointer to the master node */
434 time_t ping_sent; /* Unix time we sent latest ping */
435 time_t pong_received; /* Unix time we received the pong */
436 char *configdigest; /* Configuration digest of this node */
437 time_t configdigest_ts; /* Configuration digest timestamp */
438 char ip[16]; /* Latest known IP address of this node */
439 int port; /* Latest known port of this node */
440 clusterLink *link; /* TCP/IP link with this node */
441 };
442 typedef struct clusterNode clusterNode;
443
444 typedef struct {
445 char *configfile;
446 clusterNode *myself; /* This node */
447 int state; /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
448 int node_timeout;
449 dict *nodes; /* Hash table of name -> clusterNode structures */
450 clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
451 clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
452 clusterNode *slots[REDIS_CLUSTER_SLOTS];
453 zskiplist *slots_to_keys;
454 } clusterState;
455
456 /* Redis cluster messages header */
457
458 /* Note that the PING, PONG and MEET messages are actually the same exact
459 * kind of packet. PONG is the reply to ping, in the extact format as a PING,
460 * while MEET is a special PING that forces the receiver to add the sender
461 * as a node (if it is not already in the list). */
462 #define CLUSTERMSG_TYPE_PING 0 /* Ping */
463 #define CLUSTERMSG_TYPE_PONG 1 /* Pong (reply to Ping) */
464 #define CLUSTERMSG_TYPE_MEET 2 /* Meet "let's join" message */
465 #define CLUSTERMSG_TYPE_FAIL 3 /* Mark node xxx as failing */
466
467 /* Initially we don't know our "name", but we'll find it once we connect
468 * to the first node, using the getsockname() function. Then we'll use this
469 * address for all the next messages. */
470 typedef struct {
471 char nodename[REDIS_CLUSTER_NAMELEN];
472 uint32_t ping_sent;
473 uint32_t pong_received;
474 char ip[16]; /* IP address last time it was seen */
475 uint16_t port; /* port last time it was seen */
476 uint16_t flags;
477 uint32_t notused; /* for 64 bit alignment */
478 } clusterMsgDataGossip;
479
480 typedef struct {
481 char nodename[REDIS_CLUSTER_NAMELEN];
482 } clusterMsgDataFail;
483
484 union clusterMsgData {
485 /* PING, MEET and PONG */
486 struct {
487 /* Array of N clusterMsgDataGossip structures */
488 clusterMsgDataGossip gossip[1];
489 } ping;
490 /* FAIL */
491 struct {
492 clusterMsgDataFail about;
493 } fail;
494 };
495
496 typedef struct {
497 uint32_t totlen; /* Total length of this message */
498 uint16_t type; /* Message type */
499 uint16_t count; /* Only used for some kind of messages. */
500 char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
501 unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
502 char slaveof[REDIS_CLUSTER_NAMELEN];
503 char configdigest[32];
504 uint16_t port; /* Sender TCP base port */
505 unsigned char state; /* Cluster state from the POV of the sender */
506 unsigned char notused[5]; /* Reserved for future use. For alignment. */
507 union clusterMsgData data;
508 } clusterMsg;
509
510 /*-----------------------------------------------------------------------------
511 * Global server state
512 *----------------------------------------------------------------------------*/
513
514 struct redisServer {
515 /* General */
516 pthread_t mainthread;
517 redisDb *db;
518 dict *commands; /* Command table hahs table */
519 aeEventLoop *el;
520 /* Networking */
521 int port;
522 char *bindaddr;
523 char *unixsocket;
524 int ipfd;
525 int sofd;
526 int cfd;
527 list *clients;
528 list *slaves, *monitors;
529 char neterr[ANET_ERR_LEN];
530 /* RDB / AOF loading information */
531 int loading;
532 off_t loading_total_bytes;
533 off_t loading_loaded_bytes;
534 time_t loading_start_time;
535 /* Fast pointers to often looked up command */
536 struct redisCommand *delCommand, *multiCommand;
537 int cronloops; /* number of times the cron function run */
538 time_t lastsave; /* Unix time of last save succeeede */
539 /* Fields used only for stats */
540 time_t stat_starttime; /* server start time */
541 long long stat_numcommands; /* number of processed commands */
542 long long stat_numconnections; /* number of connections received */
543 long long stat_expiredkeys; /* number of expired keys */
544 long long stat_evictedkeys; /* number of evicted keys (maxmemory) */
545 long long stat_keyspace_hits; /* number of successful lookups of keys */
546 long long stat_keyspace_misses; /* number of failed lookups of keys */
547 size_t stat_peak_memory; /* max used memory record */
548 /* Configuration */
549 int verbosity;
550 int maxidletime;
551 int dbnum;
552 int daemonize;
553 int appendonly;
554 int appendfsync;
555 int no_appendfsync_on_rewrite;
556 int shutdown_asap;
557 int activerehashing;
558 char *requirepass;
559 /* Persistence */
560 long long dirty; /* changes to DB from the last save */
561 long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
562 time_t lastfsync;
563 int appendfd;
564 int appendseldb;
565 char *pidfile;
566 pid_t bgsavechildpid;
567 pid_t bgrewritechildpid;
568 int bgsavethread_state;
569 pthread_mutex_t bgsavethread_mutex;
570 pthread_t bgsavethread;
571 sds bgrewritebuf; /* buffer taken by parent during oppend only rewrite */
572 sds aofbuf; /* AOF buffer, written before entering the event loop */
573 struct saveparam *saveparams;
574 int saveparamslen;
575 char *dbfilename;
576 int rdbcompression;
577 char *appendfilename;
578 /* Logging */
579 char *logfile;
580 int syslog_enabled;
581 char *syslog_ident;
582 int syslog_facility;
583 /* Replication related */
584 int isslave;
585 /* Slave specific fields */
586 char *masterauth;
587 char *masterhost;
588 int masterport;
589 redisClient *master; /* client that is master for this slave */
590 int replstate; /* replication status if the instance is a slave */
591 off_t repl_transfer_left; /* bytes left reading .rdb */
592 int repl_transfer_s; /* slave -> master SYNC socket */
593 int repl_transfer_fd; /* slave -> master SYNC temp file descriptor */
594 char *repl_transfer_tmpfile; /* slave-> master SYNC temp file name */
595 time_t repl_transfer_lastio; /* unix time of the latest read, for timeout */
596 int repl_serve_stale_data; /* Serve stale data when link is down? */
597 /* Limits */
598 unsigned int maxclients;
599 unsigned long long maxmemory;
600 int maxmemory_policy;
601 int maxmemory_samples;
602 /* Blocked clients */
603 unsigned int bpop_blocked_clients;
604 unsigned int cache_blocked_clients;
605 list *unblocked_clients; /* list of clients to unblock before next loop */
606 list *cache_io_queue; /* IO operations queue */
607 int cache_flush_delay; /* seconds to wait before flushing keys */
608 /* Sort parameters - qsort_r() is only available under BSD so we
609 * have to take this state global, in order to pass it to sortCompare() */
610 int sort_desc;
611 int sort_alpha;
612 int sort_bypattern;
613 /* Virtual memory configuration */
614 int ds_enabled; /* backend disk in redis.conf */
615 char *ds_path; /* location of the disk store on disk */
616 unsigned long long cache_max_memory;
617 /* Zip structure config */
618 size_t hash_max_zipmap_entries;
619 size_t hash_max_zipmap_value;
620 size_t list_max_ziplist_entries;
621 size_t list_max_ziplist_value;
622 size_t set_max_intset_entries;
623 size_t zset_max_ziplist_entries;
624 size_t zset_max_ziplist_value;
625 time_t unixtime; /* Unix time sampled every second. */
626 /* Virtual memory I/O threads stuff */
627 /* An I/O thread process an element taken from the io_jobs queue and
628 * put the result of the operation in the io_done list. While the
629 * job is being processed, it's put on io_processing queue. */
630 list *io_newjobs; /* List of VM I/O jobs yet to be processed */
631 list *io_processing; /* List of VM I/O jobs being processed */
632 list *io_processed; /* List of VM I/O jobs already processed */
633 list *io_ready_clients; /* Clients ready to be unblocked. All keys loaded */
634 pthread_mutex_t io_mutex; /* lock to access io_jobs/io_done/io_thread_job */
635 pthread_cond_t io_condvar; /* I/O threads conditional variable */
636 pthread_attr_t io_threads_attr; /* attributes for threads creation */
637 int io_active_threads; /* Number of running I/O threads */
638 int vm_max_threads; /* Max number of I/O threads running at the same time */
639 /* Our main thread is blocked on the event loop, locking for sockets ready
640 * to be read or written, so when a threaded I/O operation is ready to be
641 * processed by the main thread, the I/O thread will use a unix pipe to
642 * awake the main thread. The followings are the two pipe FDs. */
643 int io_ready_pipe_read;
644 int io_ready_pipe_write;
645 /* Virtual memory stats */
646 unsigned long long vm_stats_used_pages;
647 unsigned long long vm_stats_swapped_objects;
648 unsigned long long vm_stats_swapouts;
649 unsigned long long vm_stats_swapins;
650 /* Pubsub */
651 dict *pubsub_channels; /* Map channels to list of subscribed clients */
652 list *pubsub_patterns; /* A list of pubsub_patterns */
653 /* Misc */
654 unsigned lruclock:22; /* clock incrementing every minute, for LRU */
655 unsigned lruclock_padding:10;
656 /* Cluster */
657 int cluster_enabled;
658 clusterState cluster;
659 /* Scripting */
660 lua_State *lua;
661 redisClient *lua_client;
662 };
663
664 typedef struct pubsubPattern {
665 redisClient *client;
666 robj *pattern;
667 } pubsubPattern;
668
669 typedef void redisCommandProc(redisClient *c);
670 typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
671 struct redisCommand {
672 char *name;
673 redisCommandProc *proc;
674 int arity;
675 int flags;
676 /* Use a function to determine keys arguments in a command line.
677 * Used both for diskstore preloading and Redis Cluster. */
678 redisGetKeysProc *getkeys_proc;
679 /* What keys should be loaded in background when calling this command? */
680 int firstkey; /* The first argument that's a key (0 = no keys) */
681 int lastkey; /* THe last argument that's a key */
682 int keystep; /* The step between first and last key */
683 long long microseconds, calls;
684 };
685
686 struct redisFunctionSym {
687 char *name;
688 unsigned long pointer;
689 };
690
691 typedef struct _redisSortObject {
692 robj *obj;
693 union {
694 double score;
695 robj *cmpobj;
696 } u;
697 } redisSortObject;
698
699 typedef struct _redisSortOperation {
700 int type;
701 robj *pattern;
702 } redisSortOperation;
703
704 /* DIsk store threaded I/O request message */
705 #define REDIS_IOJOB_LOAD 0
706 #define REDIS_IOJOB_SAVE 1
707
708 typedef struct iojob {
709 int type; /* Request type, REDIS_IOJOB_* */
710 redisDb *db;/* Redis database */
711 robj *key; /* This I/O request is about this key */
712 robj *val; /* the value to swap for REDIS_IOJOB_SAVE, otherwise this
713 * field is populated by the I/O thread for REDIS_IOJOB_LOAD. */
714 time_t expire; /* Expire time for this key on REDIS_IOJOB_LOAD */
715 } iojob;
716
717 /* IO operations scheduled -- check dscache.c for more info */
718 typedef struct ioop {
719 int type;
720 redisDb *db;
721 robj *key;
722 time_t ctime; /* This is the creation time of the entry. */
723 } ioop;
724
725 /* Structure to hold list iteration abstraction. */
726 typedef struct {
727 robj *subject;
728 unsigned char encoding;
729 unsigned char direction; /* Iteration direction */
730 unsigned char *zi;
731 listNode *ln;
732 } listTypeIterator;
733
734 /* Structure for an entry while iterating over a list. */
735 typedef struct {
736 listTypeIterator *li;
737 unsigned char *zi; /* Entry in ziplist */
738 listNode *ln; /* Entry in linked list */
739 } listTypeEntry;
740
741 /* Structure to hold set iteration abstraction. */
742 typedef struct {
743 robj *subject;
744 int encoding;
745 int ii; /* intset iterator */
746 dictIterator *di;
747 } setTypeIterator;
748
749 /* Structure to hold hash iteration abstration. Note that iteration over
750 * hashes involves both fields and values. Because it is possible that
751 * not both are required, store pointers in the iterator to avoid
752 * unnecessary memory allocation for fields/values. */
753 typedef struct {
754 int encoding;
755 unsigned char *zi;
756 unsigned char *zk, *zv;
757 unsigned int zklen, zvlen;
758
759 dictIterator *di;
760 dictEntry *de;
761 } hashTypeIterator;
762
763 #define REDIS_HASH_KEY 1
764 #define REDIS_HASH_VALUE 2
765
766 /*-----------------------------------------------------------------------------
767 * Extern declarations
768 *----------------------------------------------------------------------------*/
769
770 extern struct redisServer server;
771 extern struct sharedObjectsStruct shared;
772 extern dictType setDictType;
773 extern dictType zsetDictType;
774 extern dictType clusterNodesDictType;
775 extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
776 dictType hashDictType;
777
778 /*-----------------------------------------------------------------------------
779 * Functions prototypes
780 *----------------------------------------------------------------------------*/
781
782 /* Utils */
783 long long ustime(void);
784
785 /* networking.c -- Networking and Client related operations */
786 redisClient *createClient(int fd);
787 void closeTimedoutClients(void);
788 void freeClient(redisClient *c);
789 void resetClient(redisClient *c);
790 void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
791 void addReply(redisClient *c, robj *obj);
792 void *addDeferredMultiBulkLength(redisClient *c);
793 void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
794 void addReplySds(redisClient *c, sds s);
795 void processInputBuffer(redisClient *c);
796 void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
797 void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
798 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
799 void addReplyBulk(redisClient *c, robj *obj);
800 void addReplyBulkCString(redisClient *c, char *s);
801 void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
802 void addReplyBulkLongLong(redisClient *c, long long ll);
803 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
804 void addReply(redisClient *c, robj *obj);
805 void addReplySds(redisClient *c, sds s);
806 void addReplyError(redisClient *c, char *err);
807 void addReplyStatus(redisClient *c, char *status);
808 void addReplyDouble(redisClient *c, double d);
809 void addReplyLongLong(redisClient *c, long long ll);
810 void addReplyMultiBulkLen(redisClient *c, long length);
811 void *dupClientReplyValue(void *o);
812 void getClientsMaxBuffers(unsigned long *longest_output_list,
813 unsigned long *biggest_input_buffer);
814
815 #ifdef __GNUC__
816 void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
817 __attribute__((format(printf, 2, 3)));
818 void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
819 __attribute__((format(printf, 2, 3)));
820 #else
821 void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
822 void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
823 #endif
824
825 /* List data type */
826 void listTypeTryConversion(robj *subject, robj *value);
827 void listTypePush(robj *subject, robj *value, int where);
828 robj *listTypePop(robj *subject, int where);
829 unsigned long listTypeLength(robj *subject);
830 listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
831 void listTypeReleaseIterator(listTypeIterator *li);
832 int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
833 robj *listTypeGet(listTypeEntry *entry);
834 void listTypeInsert(listTypeEntry *entry, robj *value, int where);
835 int listTypeEqual(listTypeEntry *entry, robj *o);
836 void listTypeDelete(listTypeEntry *entry);
837 void listTypeConvert(robj *subject, int enc);
838 void unblockClientWaitingData(redisClient *c);
839 int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
840 void popGenericCommand(redisClient *c, int where);
841
842 /* MULTI/EXEC/WATCH... */
843 void unwatchAllKeys(redisClient *c);
844 void initClientMultiState(redisClient *c);
845 void freeClientMultiState(redisClient *c);
846 void queueMultiCommand(redisClient *c, struct redisCommand *cmd);
847 void touchWatchedKey(redisDb *db, robj *key);
848 void touchWatchedKeysOnFlush(int dbid);
849
850 /* Redis object implementation */
851 void decrRefCount(void *o);
852 void incrRefCount(robj *o);
853 void freeStringObject(robj *o);
854 void freeListObject(robj *o);
855 void freeSetObject(robj *o);
856 void freeZsetObject(robj *o);
857 void freeHashObject(robj *o);
858 robj *createObject(int type, void *ptr);
859 robj *createStringObject(char *ptr, size_t len);
860 robj *dupStringObject(robj *o);
861 int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
862 robj *tryObjectEncoding(robj *o);
863 robj *getDecodedObject(robj *o);
864 size_t stringObjectLen(robj *o);
865 robj *createStringObjectFromLongLong(long long value);
866 robj *createListObject(void);
867 robj *createZiplistObject(void);
868 robj *createSetObject(void);
869 robj *createIntsetObject(void);
870 robj *createHashObject(void);
871 robj *createZsetObject(void);
872 robj *createZsetZiplistObject(void);
873 int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
874 int checkType(redisClient *c, robj *o, int type);
875 int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
876 int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
877 int getLongLongFromObject(robj *o, long long *target);
878 char *strEncoding(int encoding);
879 int compareStringObjects(robj *a, robj *b);
880 int equalStringObjects(robj *a, robj *b);
881 unsigned long estimateObjectIdleTime(robj *o);
882
883 /* Synchronous I/O with timeout */
884 int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
885 int syncRead(int fd, char *ptr, ssize_t size, int timeout);
886 int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
887 int fwriteBulkString(FILE *fp, char *s, unsigned long len);
888 int fwriteBulkDouble(FILE *fp, double d);
889 int fwriteBulkLongLong(FILE *fp, long long l);
890 int fwriteBulkObject(FILE *fp, robj *obj);
891 int fwriteBulkCount(FILE *fp, char prefix, int count);
892
893 /* Replication */
894 void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
895 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
896 int syncWithMaster(void);
897 void updateSlavesWaitingBgsave(int bgsaveerr);
898 void replicationCron(void);
899
900 /* Generic persistence functions */
901 void startLoading(FILE *fp);
902 void loadingProgress(off_t pos);
903 void stopLoading(void);
904
905 /* RDB persistence */
906 int rdbLoad(char *filename);
907 int rdbSaveBackground(char *filename);
908 void rdbRemoveTempFile(pid_t childpid);
909 int rdbSave(char *filename);
910 int rdbSaveObject(FILE *fp, robj *o);
911 off_t rdbSavedObjectLen(robj *o);
912 off_t rdbSavedObjectPages(robj *o);
913 robj *rdbLoadObject(int type, FILE *fp);
914 void backgroundSaveDoneHandler(int exitcode, int bysignal);
915 int rdbSaveKeyValuePair(FILE *fp, robj *key, robj *val, time_t expireitme, time_t now);
916 int rdbLoadType(FILE *fp);
917 time_t rdbLoadTime(FILE *fp);
918 robj *rdbLoadStringObject(FILE *fp);
919 int rdbSaveType(FILE *fp, unsigned char type);
920 int rdbSaveLen(FILE *fp, uint32_t len);
921
922 /* AOF persistence */
923 void flushAppendOnlyFile(void);
924 void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
925 void aofRemoveTempFile(pid_t childpid);
926 int rewriteAppendOnlyFileBackground(void);
927 int loadAppendOnlyFile(char *filename);
928 void stopAppendOnly(void);
929 int startAppendOnly(void);
930 void backgroundRewriteDoneHandler(int exitcode, int bysignal);
931
932 /* Sorted sets data type */
933
934 /* Struct to hold a inclusive/exclusive range spec. */
935 typedef struct {
936 double min, max;
937 int minex, maxex; /* are min or max exclusive? */
938 } zrangespec;
939
940 zskiplist *zslCreate(void);
941 void zslFree(zskiplist *zsl);
942 zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
943 unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
944 int zslDelete(zskiplist *zsl, double score, robj *obj);
945 zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
946 double zzlGetScore(unsigned char *sptr);
947 void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
948 void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
949 unsigned int zsetLength(robj *zobj);
950 void zsetConvert(robj *zobj, int encoding);
951
952 /* Core functions */
953 void freeMemoryIfNeeded(void);
954 int processCommand(redisClient *c);
955 void setupSignalHandlers(void);
956 struct redisCommand *lookupCommand(sds name);
957 struct redisCommand *lookupCommandByCString(char *s);
958 void call(redisClient *c, struct redisCommand *cmd);
959 int prepareForShutdown();
960 void redisLog(int level, const char *fmt, ...);
961 void usage();
962 void updateDictResizePolicy(void);
963 int htNeedsResize(dict *dict);
964 void oom(const char *msg);
965 void populateCommandTable(void);
966 void resetCommandTableStats(void);
967
968 /* Disk store */
969 int dsOpen(void);
970 int dsClose(void);
971 int dsSet(redisDb *db, robj *key, robj *val, time_t expire);
972 robj *dsGet(redisDb *db, robj *key, time_t *expire);
973 int dsDel(redisDb *db, robj *key);
974 int dsExists(redisDb *db, robj *key);
975 void dsFlushDb(int dbid);
976 int dsRdbSaveBackground(char *filename);
977 int dsRdbSave(char *filename);
978
979 /* Disk Store Cache */
980 void dsInit(void);
981 void vmThreadedIOCompletedJob(aeEventLoop *el, int fd, void *privdata, int mask);
982 void lockThreadedIO(void);
983 void unlockThreadedIO(void);
984 void freeIOJob(iojob *j);
985 void queueIOJob(iojob *j);
986 void waitEmptyIOJobsQueue(void);
987 void processAllPendingIOJobs(void);
988 int blockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd);
989 int dontWaitForSwappedKey(redisClient *c, robj *key);
990 void handleClientsBlockedOnSwappedKey(redisDb *db, robj *key);
991 int cacheFreeOneEntry(void);
992 void cacheScheduleIOAddFlag(redisDb *db, robj *key, long flag);
993 void cacheScheduleIODelFlag(redisDb *db, robj *key, long flag);
994 int cacheScheduleIOGetFlags(redisDb *db, robj *key);
995 void cacheScheduleIO(redisDb *db, robj *key, int type);
996 void cacheCron(void);
997 int cacheKeyMayExist(redisDb *db, robj *key);
998 void cacheSetKeyMayExist(redisDb *db, robj *key);
999 void cacheSetKeyDoesNotExist(redisDb *db, robj *key);
1000 void cacheForcePointInTime(void);
1001
1002 /* Set data type */
1003 robj *setTypeCreate(robj *value);
1004 int setTypeAdd(robj *subject, robj *value);
1005 int setTypeRemove(robj *subject, robj *value);
1006 int setTypeIsMember(robj *subject, robj *value);
1007 setTypeIterator *setTypeInitIterator(robj *subject);
1008 void setTypeReleaseIterator(setTypeIterator *si);
1009 int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
1010 robj *setTypeNextObject(setTypeIterator *si);
1011 int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
1012 unsigned long setTypeSize(robj *subject);
1013 void setTypeConvert(robj *subject, int enc);
1014
1015 /* Hash data type */
1016 void convertToRealHash(robj *o);
1017 void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
1018 void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
1019 int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
1020 robj *hashTypeGetObject(robj *o, robj *key);
1021 int hashTypeExists(robj *o, robj *key);
1022 int hashTypeSet(robj *o, robj *key, robj *value);
1023 int hashTypeDelete(robj *o, robj *key);
1024 unsigned long hashTypeLength(robj *o);
1025 hashTypeIterator *hashTypeInitIterator(robj *subject);
1026 void hashTypeReleaseIterator(hashTypeIterator *hi);
1027 int hashTypeNext(hashTypeIterator *hi);
1028 int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
1029 robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
1030 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
1031
1032 /* Pub / Sub */
1033 int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
1034 int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
1035 void freePubsubPattern(void *p);
1036 int listMatchPubsubPattern(void *a, void *b);
1037
1038 /* Configuration */
1039 void loadServerConfig(char *filename);
1040 void appendServerSaveParams(time_t seconds, int changes);
1041 void resetServerSaveParams();
1042
1043 /* db.c -- Keyspace access API */
1044 int removeExpire(redisDb *db, robj *key);
1045 void propagateExpire(redisDb *db, robj *key);
1046 int expireIfNeeded(redisDb *db, robj *key);
1047 time_t getExpire(redisDb *db, robj *key);
1048 void setExpire(redisDb *db, robj *key, time_t when);
1049 robj *lookupKey(redisDb *db, robj *key);
1050 robj *lookupKeyRead(redisDb *db, robj *key);
1051 robj *lookupKeyWrite(redisDb *db, robj *key);
1052 robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
1053 robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
1054 int dbAdd(redisDb *db, robj *key, robj *val);
1055 int dbReplace(redisDb *db, robj *key, robj *val);
1056 int dbExists(redisDb *db, robj *key);
1057 robj *dbRandomKey(redisDb *db);
1058 int dbDelete(redisDb *db, robj *key);
1059 long long emptyDb();
1060 int selectDb(redisClient *c, int id);
1061 void signalModifiedKey(redisDb *db, robj *key);
1062 void signalFlushedDb(int dbid);
1063 unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
1064
1065 /* API to get key arguments from commands */
1066 #define REDIS_GETKEYS_ALL 0
1067 #define REDIS_GETKEYS_PRELOAD 1
1068 int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
1069 void getKeysFreeResult(int *result);
1070 int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1071 int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1072 int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
1073
1074 /* Cluster */
1075 void clusterInit(void);
1076 unsigned short crc16(const char *buf, int len);
1077 unsigned int keyHashSlot(char *key, int keylen);
1078 clusterNode *createClusterNode(char *nodename, int flags);
1079 int clusterAddNode(clusterNode *node);
1080 void clusterCron(void);
1081 clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
1082
1083 /* Scripting */
1084 void scriptingInit(void);
1085
1086 /* Git SHA1 */
1087 char *redisGitSHA1(void);
1088 char *redisGitDirty(void);
1089
1090 /* Commands prototypes */
1091 void authCommand(redisClient *c);
1092 void pingCommand(redisClient *c);
1093 void echoCommand(redisClient *c);
1094 void setCommand(redisClient *c);
1095 void setnxCommand(redisClient *c);
1096 void setexCommand(redisClient *c);
1097 void getCommand(redisClient *c);
1098 void delCommand(redisClient *c);
1099 void existsCommand(redisClient *c);
1100 void setbitCommand(redisClient *c);
1101 void getbitCommand(redisClient *c);
1102 void setrangeCommand(redisClient *c);
1103 void getrangeCommand(redisClient *c);
1104 void incrCommand(redisClient *c);
1105 void decrCommand(redisClient *c);
1106 void incrbyCommand(redisClient *c);
1107 void decrbyCommand(redisClient *c);
1108 void selectCommand(redisClient *c);
1109 void randomkeyCommand(redisClient *c);
1110 void keysCommand(redisClient *c);
1111 void dbsizeCommand(redisClient *c);
1112 void lastsaveCommand(redisClient *c);
1113 void saveCommand(redisClient *c);
1114 void bgsaveCommand(redisClient *c);
1115 void bgrewriteaofCommand(redisClient *c);
1116 void shutdownCommand(redisClient *c);
1117 void moveCommand(redisClient *c);
1118 void renameCommand(redisClient *c);
1119 void renamenxCommand(redisClient *c);
1120 void lpushCommand(redisClient *c);
1121 void rpushCommand(redisClient *c);
1122 void lpushxCommand(redisClient *c);
1123 void rpushxCommand(redisClient *c);
1124 void linsertCommand(redisClient *c);
1125 void lpopCommand(redisClient *c);
1126 void rpopCommand(redisClient *c);
1127 void llenCommand(redisClient *c);
1128 void lindexCommand(redisClient *c);
1129 void lrangeCommand(redisClient *c);
1130 void ltrimCommand(redisClient *c);
1131 void typeCommand(redisClient *c);
1132 void lsetCommand(redisClient *c);
1133 void saddCommand(redisClient *c);
1134 void sremCommand(redisClient *c);
1135 void smoveCommand(redisClient *c);
1136 void sismemberCommand(redisClient *c);
1137 void scardCommand(redisClient *c);
1138 void spopCommand(redisClient *c);
1139 void srandmemberCommand(redisClient *c);
1140 void sinterCommand(redisClient *c);
1141 void sinterstoreCommand(redisClient *c);
1142 void sunionCommand(redisClient *c);
1143 void sunionstoreCommand(redisClient *c);
1144 void sdiffCommand(redisClient *c);
1145 void sdiffstoreCommand(redisClient *c);
1146 void syncCommand(redisClient *c);
1147 void flushdbCommand(redisClient *c);
1148 void flushallCommand(redisClient *c);
1149 void sortCommand(redisClient *c);
1150 void lremCommand(redisClient *c);
1151 void rpoplpushCommand(redisClient *c);
1152 void infoCommand(redisClient *c);
1153 void mgetCommand(redisClient *c);
1154 void monitorCommand(redisClient *c);
1155 void expireCommand(redisClient *c);
1156 void expireatCommand(redisClient *c);
1157 void getsetCommand(redisClient *c);
1158 void ttlCommand(redisClient *c);
1159 void persistCommand(redisClient *c);
1160 void slaveofCommand(redisClient *c);
1161 void debugCommand(redisClient *c);
1162 void msetCommand(redisClient *c);
1163 void msetnxCommand(redisClient *c);
1164 void zaddCommand(redisClient *c);
1165 void zincrbyCommand(redisClient *c);
1166 void zrangeCommand(redisClient *c);
1167 void zrangebyscoreCommand(redisClient *c);
1168 void zrevrangebyscoreCommand(redisClient *c);
1169 void zcountCommand(redisClient *c);
1170 void zrevrangeCommand(redisClient *c);
1171 void zcardCommand(redisClient *c);
1172 void zremCommand(redisClient *c);
1173 void zscoreCommand(redisClient *c);
1174 void zremrangebyscoreCommand(redisClient *c);
1175 void multiCommand(redisClient *c);
1176 void execCommand(redisClient *c);
1177 void discardCommand(redisClient *c);
1178 void blpopCommand(redisClient *c);
1179 void brpopCommand(redisClient *c);
1180 void brpoplpushCommand(redisClient *c);
1181 void appendCommand(redisClient *c);
1182 void strlenCommand(redisClient *c);
1183 void zrankCommand(redisClient *c);
1184 void zrevrankCommand(redisClient *c);
1185 void hsetCommand(redisClient *c);
1186 void hsetnxCommand(redisClient *c);
1187 void hgetCommand(redisClient *c);
1188 void hmsetCommand(redisClient *c);
1189 void hmgetCommand(redisClient *c);
1190 void hdelCommand(redisClient *c);
1191 void hlenCommand(redisClient *c);
1192 void zremrangebyrankCommand(redisClient *c);
1193 void zunionstoreCommand(redisClient *c);
1194 void zinterstoreCommand(redisClient *c);
1195 void hkeysCommand(redisClient *c);
1196 void hvalsCommand(redisClient *c);
1197 void hgetallCommand(redisClient *c);
1198 void hexistsCommand(redisClient *c);
1199 void configCommand(redisClient *c);
1200 void hincrbyCommand(redisClient *c);
1201 void subscribeCommand(redisClient *c);
1202 void unsubscribeCommand(redisClient *c);
1203 void psubscribeCommand(redisClient *c);
1204 void punsubscribeCommand(redisClient *c);
1205 void publishCommand(redisClient *c);
1206 void watchCommand(redisClient *c);
1207 void unwatchCommand(redisClient *c);
1208 void clusterCommand(redisClient *c);
1209 void restoreCommand(redisClient *c);
1210 void migrateCommand(redisClient *c);
1211 void dumpCommand(redisClient *c);
1212 void objectCommand(redisClient *c);
1213 void clientCommand(redisClient *c);
1214 void evalCommand(redisClient *c);
1215
1216 #if defined(__GNUC__)
1217 void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1218 void free(void *ptr) __attribute__ ((deprecated));
1219 void *malloc(size_t size) __attribute__ ((deprecated));
1220 void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1221 #endif
1222
1223 #endif
Redis += OpenLDAP MDB