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