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e2641e09 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>
3688d7f3 18#include <inttypes.h>
d06a5b23 19#include <pthread.h>
e1a586ee 20#include <syslog.h>
ecc91094 21#include <netinet/in.h>
7585836e 22#include <lua.h>
e2641e09 23
daa70b17 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 */
e2641e09 28#include "zmalloc.h" /* total memory usage aware version of malloc/free */
daa70b17 29#include "anet.h" /* Networking the easy way */
30#include "zipmap.h" /* Compact string -> string data structure */
e2641e09 31#include "ziplist.h" /* Compact list data structure */
daa70b17 32#include "intset.h" /* Compact integer set structure */
33#include "version.h" /* Version macro */
34#include "util.h" /* Misc functions useful in many places */
e2641e09 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 */
3570629f 42#define REDIS_MAXIDLETIME 0 /* default client timeout: infinite */
e2641e09 43#define REDIS_DEFAULT_DBNUM 16
44#define REDIS_CONFIGLINE_MAX 1024
e2641e09 45#define REDIS_EXPIRELOOKUPS_PER_CRON 10 /* lookup 10 expires per loop */
46#define REDIS_MAX_WRITE_PER_EVENT (1024*64)
e2641e09 47#define REDIS_SHARED_INTEGERS 10000
e1a586ee 48#define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */
2c915bcf 49#define REDIS_AOF_REWRITE_PERC 100
50#define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
51#define REDIS_AOF_REWRITE_ITEMS_PER_CMD 64
daa70b17 52#define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
53#define REDIS_SLOWLOG_MAX_LEN 64
58732c23 54#define REDIS_MAX_CLIENTS 10000
834ef78e 55
8996bf77 56#define REDIS_REPL_TIMEOUT 60
57#define REDIS_REPL_PING_SLAVE_PERIOD 10
f42e2f1b 58
59/* Protocol and I/O related defines */
60#define REDIS_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */
61#define REDIS_IOBUF_LEN (1024*16) /* Generic I/O buffer size */
62#define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
11e0c4c5 63#define REDIS_INLINE_MAX_SIZE (1024*64) /* Max size of inline reads */
f42e2f1b 64#define REDIS_MBULK_BIG_ARG (1024*32)
8996bf77 65
e2641e09 66/* Hash table parameters */
67#define REDIS_HT_MINFILL 10 /* Minimal hash table fill 10% */
68
5d02b00f 69/* Command flags. Please check the command table defined in the redis.c file
70 * for more information about the meaning of every flag. */
71#define REDIS_CMD_WRITE 1 /* "w" flag */
72#define REDIS_CMD_READONLY 2 /* "r" flag */
73#define REDIS_CMD_DENYOOM 4 /* "m" flag */
74#define REDIS_CMD_FORCE_REPLICATION 8 /* "f" flag */
75#define REDIS_CMD_ADMIN 16 /* "a" flag */
76#define REDIS_CMD_PUBSUB 32 /* "p" flag */
b60ed6e8 77#define REDIS_CMD_NOSCRIPT 64 /* "s" flag */
78#define REDIS_CMD_RANDOM 128 /* "R" flag */
e2641e09 79
80/* Object types */
81#define REDIS_STRING 0
82#define REDIS_LIST 1
83#define REDIS_SET 2
84#define REDIS_ZSET 3
85#define REDIS_HASH 4
86#define REDIS_VMPOINTER 8
e12b27ac 87
e2641e09 88/* Objects encoding. Some kind of objects like Strings and Hashes can be
89 * internally represented in multiple ways. The 'encoding' field of the object
90 * is set to one of this fields for this object. */
91#define REDIS_ENCODING_RAW 0 /* Raw representation */
92#define REDIS_ENCODING_INT 1 /* Encoded as integer */
93#define REDIS_ENCODING_HT 2 /* Encoded as hash table */
94#define REDIS_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
95#define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
96#define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
96ffb2fe 97#define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
0b7f6d09 98#define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
e2641e09 99
e2641e09 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
c6ac7d03 127/* AOF states */
128#define REDIS_AOF_OFF 0 /* AOF is off */
129#define REDIS_AOF_ON 1 /* AOF is on */
130#define REDIS_AOF_WAIT_REWRITE 2 /* AOF waits rewrite to start appending */
131
e2641e09 132/* Client flags */
133#define REDIS_SLAVE 1 /* This client is a slave server */
134#define REDIS_MASTER 2 /* This client is a master server */
135#define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
136#define REDIS_MULTI 8 /* This client is in a MULTI context */
137#define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
e2641e09 138#define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
5e78edb3 139#define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
3bcffcbe
PN
140#define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
141 server.unblocked_clients */
7156f43c 142#define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
6856c7b4 143#define REDIS_ASKING 1024 /* Client issued the ASKING command */
cd8788f2
PN
144
145/* Client request types */
146#define REDIS_REQ_INLINE 1
147#define REDIS_REQ_MULTIBULK 2
e2641e09 148
149/* Slave replication state - slave side */
a3309139
PN
150#define REDIS_REPL_NONE 0 /* No active replication */
151#define REDIS_REPL_CONNECT 1 /* Must connect to master */
b075621f
PN
152#define REDIS_REPL_CONNECTING 2 /* Connecting to master */
153#define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
154#define REDIS_REPL_CONNECTED 4 /* Connected to master */
e2641e09 155
890a2ed9
PN
156/* Synchronous read timeout - slave side */
157#define REDIS_REPL_SYNCIO_TIMEOUT 5
e2641e09 158
159/* Slave replication state - from the point of view of master
160 * Note that in SEND_BULK and ONLINE state the slave receives new updates
161 * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
162 * to start the next background saving in order to send updates to it. */
163#define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
164#define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
165#define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
166#define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
167
168/* List related stuff */
169#define REDIS_HEAD 0
170#define REDIS_TAIL 1
171
172/* Sort operations */
173#define REDIS_SORT_GET 0
174#define REDIS_SORT_ASC 1
175#define REDIS_SORT_DESC 2
176#define REDIS_SORTKEY_MAX 1024
177
178/* Log levels */
179#define REDIS_DEBUG 0
180#define REDIS_VERBOSE 1
181#define REDIS_NOTICE 2
182#define REDIS_WARNING 3
996d503d 183#define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
e2641e09 184
185/* Anti-warning macro... */
186#define REDIS_NOTUSED(V) ((void) V)
187
188#define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
189#define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
190
191/* Append only defines */
2c915bcf 192#define AOF_FSYNC_NO 0
193#define AOF_FSYNC_ALWAYS 1
194#define AOF_FSYNC_EVERYSEC 2
e2641e09 195
196/* Zip structure related defaults */
52dc87bb 197#define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512
198#define REDIS_HASH_MAX_ZIPMAP_VALUE 64
6a246b1e 199#define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
200#define REDIS_LIST_MAX_ZIPLIST_VALUE 64
201#define REDIS_SET_MAX_INTSET_ENTRIES 512
3ea204e1
PN
202#define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
203#define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
e2641e09 204
205/* Sets operations codes */
206#define REDIS_OP_UNION 0
207#define REDIS_OP_DIFF 1
208#define REDIS_OP_INTER 2
209
165346ca 210/* Redis maxmemory strategies */
211#define REDIS_MAXMEMORY_VOLATILE_LRU 0
212#define REDIS_MAXMEMORY_VOLATILE_TTL 1
213#define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
214#define REDIS_MAXMEMORY_ALLKEYS_LRU 3
215#define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
5402c426 216#define REDIS_MAXMEMORY_NO_EVICTION 5
165346ca 217
eeffcf38 218/* Scripting */
8cb8d417 219#define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
eeffcf38 220
12d293ca 221/* Units */
222#define UNIT_SECONDS 0
223#define UNIT_MILLISECONDS 1
224
4ab8695d 225/* SHUTDOWN flags */
226#define REDIS_SHUTDOWN_SAVE 1 /* Force SAVE on SHUTDOWN even if no save
227 points are configured. */
228#define REDIS_SHUTDOWN_NOSAVE 2 /* Don't SAVE on SHUTDOWN. */
229
e2641e09 230/* We can print the stacktrace, so our assert is defined this way: */
bab205f7 231#define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
e2641e09 232#define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
233#define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
e2641e09 234
235/*-----------------------------------------------------------------------------
236 * Data types
237 *----------------------------------------------------------------------------*/
238
239/* A redis object, that is a type able to hold a string / list / set */
240
241/* The actual Redis Object */
ef59a8bc 242#define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
165346ca 243#define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
e2641e09 244typedef struct redisObject {
245 unsigned type:4;
3be00d7e 246 unsigned notused:2; /* Not used */
e2641e09 247 unsigned encoding:4;
248 unsigned lru:22; /* lru time (relative to server.lruclock) */
249 int refcount;
250 void *ptr;
e2641e09 251} robj;
252
e2641e09 253/* Macro used to initalize a Redis object allocated on the stack.
254 * Note that this macro is taken near the structure definition to make sure
255 * we'll update it when the structure is changed, to avoid bugs like
256 * bug #85 introduced exactly in this way. */
257#define initStaticStringObject(_var,_ptr) do { \
258 _var.refcount = 1; \
259 _var.type = REDIS_STRING; \
260 _var.encoding = REDIS_ENCODING_RAW; \
261 _var.ptr = _ptr; \
e2641e09 262} while(0);
263
264typedef struct redisDb {
265 dict *dict; /* The keyspace for this DB */
266 dict *expires; /* Timeout of keys with a timeout set */
267 dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */
e2641e09 268 dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
269 int id;
270} redisDb;
271
272/* Client MULTI/EXEC state */
273typedef struct multiCmd {
274 robj **argv;
275 int argc;
276 struct redisCommand *cmd;
277} multiCmd;
278
279typedef struct multiState {
280 multiCmd *commands; /* Array of MULTI commands */
281 int count; /* Total number of MULTI commands */
282} multiState;
283
357a8417
DJMM
284typedef struct blockingState {
285 robj **keys; /* The key we are waiting to terminate a blocking
286 * operation such as BLPOP. Otherwise NULL. */
287 int count; /* Number of blocking keys */
288 time_t timeout; /* Blocking operation timeout. If UNIX current time
289 * is >= timeout then the operation timed out. */
290 robj *target; /* The key that should receive the element,
291 * for BRPOPLPUSH. */
292} blockingState;
293
e2641e09 294/* With multiplexing we need to take per-clinet state.
295 * Clients are taken in a liked list. */
296typedef struct redisClient {
297 int fd;
298 redisDb *db;
299 int dictid;
300 sds querybuf;
cd8788f2
PN
301 int argc;
302 robj **argv;
2c74a9f9 303 struct redisCommand *cmd, *lastcmd;
cd8788f2
PN
304 int reqtype;
305 int multibulklen; /* number of multi bulk arguments left to read */
306 long bulklen; /* length of bulk argument in multi bulk request */
e2641e09 307 list *reply;
308 int sentlen;
309 time_t lastinteraction; /* time of the last interaction, used for timeout */
310 int flags; /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
311 int slaveseldb; /* slave selected db, if this client is a slave */
312 int authenticated; /* when requirepass is non-NULL */
313 int replstate; /* replication state if this is a slave */
314 int repldbfd; /* replication DB file descriptor */
315 long repldboff; /* replication DB file offset */
316 off_t repldbsize; /* replication DB file size */
317 multiState mstate; /* MULTI/EXEC state */
e3c51c4b 318 blockingState bpop; /* blocking state */
e2641e09 319 list *io_keys; /* Keys this client is waiting to be loaded from the
320 * swap file in order to continue. */
321 list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
322 dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
323 list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
834ef78e
PN
324
325 /* Response buffer */
326 int bufpos;
f3357792 327 char buf[REDIS_REPLY_CHUNK_BYTES];
e2641e09 328} redisClient;
329
330struct saveparam {
331 time_t seconds;
332 int changes;
333};
334
335struct sharedObjectsStruct {
336 robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
337 *colon, *nullbulk, *nullmultibulk, *queued,
338 *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
115e3ff3 339 *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus,
e2641e09 340 *select0, *select1, *select2, *select3, *select4,
341 *select5, *select6, *select7, *select8, *select9,
342 *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
343 *mbulk4, *psubscribebulk, *punsubscribebulk,
344 *integers[REDIS_SHARED_INTEGERS];
345};
346
c772d9c6 347/* ZSETs use a specialized version of Skiplists */
348typedef struct zskiplistNode {
349 robj *obj;
350 double score;
351 struct zskiplistNode *backward;
352 struct zskiplistLevel {
353 struct zskiplistNode *forward;
354 unsigned int span;
355 } level[];
356} zskiplistNode;
357
358typedef struct zskiplist {
359 struct zskiplistNode *header, *tail;
360 unsigned long length;
361 int level;
362} zskiplist;
363
364typedef struct zset {
365 dict *dict;
366 zskiplist *zsl;
367} zset;
368
ecc91094 369/*-----------------------------------------------------------------------------
370 * Redis cluster data structures
371 *----------------------------------------------------------------------------*/
372
373#define REDIS_CLUSTER_SLOTS 4096
374#define REDIS_CLUSTER_OK 0 /* Everything looks ok */
375#define REDIS_CLUSTER_FAIL 1 /* The cluster can't work */
376#define REDIS_CLUSTER_NEEDHELP 2 /* The cluster works, but needs some help */
377#define REDIS_CLUSTER_NAMELEN 40 /* sha1 hex length */
378#define REDIS_CLUSTER_PORT_INCR 10000 /* Cluster port = baseport + PORT_INCR */
379
380struct clusterNode;
381
382/* clusterLink encapsulates everything needed to talk with a remote node. */
383typedef struct clusterLink {
384 int fd; /* TCP socket file descriptor */
385 sds sndbuf; /* Packet send buffer */
386 sds rcvbuf; /* Packet reception buffer */
387 struct clusterNode *node; /* Node related to this link if any, or NULL */
388} clusterLink;
389
390/* Node flags */
391#define REDIS_NODE_MASTER 1 /* The node is a master */
392#define REDIS_NODE_SLAVE 2 /* The node is a slave */
393#define REDIS_NODE_PFAIL 4 /* Failure? Need acknowledge */
394#define REDIS_NODE_FAIL 8 /* The node is believed to be malfunctioning */
395#define REDIS_NODE_MYSELF 16 /* This node is myself */
396#define REDIS_NODE_HANDSHAKE 32 /* We have still to exchange the first ping */
397#define REDIS_NODE_NOADDR 64 /* We don't know the address of this node */
398#define REDIS_NODE_MEET 128 /* Send a MEET message to this node */
399#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"
400
401struct clusterNode {
402 char name[REDIS_CLUSTER_NAMELEN]; /* Node name, hex string, sha1-size */
403 int flags; /* REDIS_NODE_... */
404 unsigned char slots[REDIS_CLUSTER_SLOTS/8]; /* slots handled by this node */
405 int numslaves; /* Number of slave nodes, if this is a master */
406 struct clusterNode **slaves; /* pointers to slave nodes */
407 struct clusterNode *slaveof; /* pointer to the master node */
408 time_t ping_sent; /* Unix time we sent latest ping */
409 time_t pong_received; /* Unix time we received the pong */
410 char *configdigest; /* Configuration digest of this node */
411 time_t configdigest_ts; /* Configuration digest timestamp */
412 char ip[16]; /* Latest known IP address of this node */
413 int port; /* Latest known port of this node */
414 clusterLink *link; /* TCP/IP link with this node */
415};
416typedef struct clusterNode clusterNode;
417
418typedef struct {
ef21ab96 419 char *configfile;
ecc91094 420 clusterNode *myself; /* This node */
421 int state; /* REDIS_CLUSTER_OK, REDIS_CLUSTER_FAIL, ... */
422 int node_timeout;
423 dict *nodes; /* Hash table of name -> clusterNode structures */
424 clusterNode *migrating_slots_to[REDIS_CLUSTER_SLOTS];
425 clusterNode *importing_slots_from[REDIS_CLUSTER_SLOTS];
426 clusterNode *slots[REDIS_CLUSTER_SLOTS];
c772d9c6 427 zskiplist *slots_to_keys;
ecc91094 428} clusterState;
429
430/* Redis cluster messages header */
431
432/* Note that the PING, PONG and MEET messages are actually the same exact
433 * kind of packet. PONG is the reply to ping, in the extact format as a PING,
434 * while MEET is a special PING that forces the receiver to add the sender
435 * as a node (if it is not already in the list). */
436#define CLUSTERMSG_TYPE_PING 0 /* Ping */
437#define CLUSTERMSG_TYPE_PONG 1 /* Pong (reply to Ping) */
438#define CLUSTERMSG_TYPE_MEET 2 /* Meet "let's join" message */
439#define CLUSTERMSG_TYPE_FAIL 3 /* Mark node xxx as failing */
c563ce46 440#define CLUSTERMSG_TYPE_PUBLISH 4 /* Pub/Sub Publish propatagion */
ecc91094 441
442/* Initially we don't know our "name", but we'll find it once we connect
443 * to the first node, using the getsockname() function. Then we'll use this
444 * address for all the next messages. */
445typedef struct {
446 char nodename[REDIS_CLUSTER_NAMELEN];
447 uint32_t ping_sent;
448 uint32_t pong_received;
449 char ip[16]; /* IP address last time it was seen */
450 uint16_t port; /* port last time it was seen */
451 uint16_t flags;
452 uint32_t notused; /* for 64 bit alignment */
453} clusterMsgDataGossip;
454
455typedef struct {
456 char nodename[REDIS_CLUSTER_NAMELEN];
457} clusterMsgDataFail;
458
c563ce46 459typedef struct {
460 uint32_t channel_len;
461 uint32_t message_len;
462 unsigned char bulk_data[8]; /* defined as 8 just for alignment concerns. */
463} clusterMsgDataPublish;
464
ecc91094 465union clusterMsgData {
466 /* PING, MEET and PONG */
467 struct {
468 /* Array of N clusterMsgDataGossip structures */
469 clusterMsgDataGossip gossip[1];
470 } ping;
c563ce46 471
ecc91094 472 /* FAIL */
473 struct {
474 clusterMsgDataFail about;
475 } fail;
c563ce46 476
477 /* PUBLISH */
478 struct {
479 clusterMsgDataPublish msg;
480 } publish;
ecc91094 481};
482
483typedef struct {
484 uint32_t totlen; /* Total length of this message */
485 uint16_t type; /* Message type */
486 uint16_t count; /* Only used for some kind of messages. */
487 char sender[REDIS_CLUSTER_NAMELEN]; /* Name of the sender node */
488 unsigned char myslots[REDIS_CLUSTER_SLOTS/8];
489 char slaveof[REDIS_CLUSTER_NAMELEN];
490 char configdigest[32];
491 uint16_t port; /* Sender TCP base port */
492 unsigned char state; /* Cluster state from the POV of the sender */
493 unsigned char notused[5]; /* Reserved for future use. For alignment. */
494 union clusterMsgData data;
495} clusterMsg;
496
497/*-----------------------------------------------------------------------------
498 * Global server state
499 *----------------------------------------------------------------------------*/
500
e2641e09 501struct redisServer {
5b831607 502 /* General */
5b831607 503 redisDb *db;
504 dict *commands; /* Command table hahs table */
505 aeEventLoop *el;
c6ac7d03 506 unsigned lruclock:22; /* Clock incrementing every minute, for LRU */
507 unsigned lruclock_padding:10;
508 int shutdown_asap; /* SHUTDOWN needed ASAP */
509 int activerehashing; /* Incremental rehash in serverCron() */
510 char *requirepass; /* Pass for AUTH command, or NULL */
511 char *pidfile; /* PID file path */
5b831607 512 /* Networking */
c6ac7d03 513 int port; /* TCP listening port */
514 char *bindaddr; /* Bind address or NULL */
515 char *unixsocket; /* UNIX socket path */
516 mode_t unixsocketperm; /* UNIX socket permission */
517 int ipfd; /* TCP socket file descriptor */
518 int sofd; /* Unix socket file descriptor */
519 int cfd; /* Cluster bus lisetning socket */
520 list *clients; /* List of active clients */
521 list *slaves, *monitors; /* List of slaves and MONITORs */
00010fa9 522 redisClient *current_client; /* Current client, only used on crash report */
c6ac7d03 523 char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
97e7f8ae 524 /* RDB / AOF loading information */
c6ac7d03 525 int loading; /* We are loading data from disk if true */
97e7f8ae 526 off_t loading_total_bytes;
527 off_t loading_loaded_bytes;
528 time_t loading_start_time;
4ebfc455 529 /* Fast pointers to often looked up command */
530 struct redisCommand *delCommand, *multiCommand;
c6ac7d03 531 int cronloops; /* Number of times the cron function run */
53eeeaff 532 time_t lastsave; /* Unix time of last save succeeede */
e2641e09 533 /* Fields used only for stats */
c6ac7d03 534 time_t stat_starttime; /* Server start time */
535 long long stat_numcommands; /* Number of processed commands */
536 long long stat_numconnections; /* Number of connections received */
537 long long stat_expiredkeys; /* Number of expired keys */
538 long long stat_evictedkeys; /* Number of evicted keys (maxmemory) */
539 long long stat_keyspace_hits; /* Number of successful lookups of keys */
540 long long stat_keyspace_misses; /* Number of failed lookups of keys */
541 size_t stat_peak_memory; /* Max used memory record */
542 long long stat_fork_time; /* Time needed to perform latets fork() */
543 long long stat_rejected_conn; /* Clients rejected because of maxclients */
544 list *slowlog; /* SLOWLOG list of commands */
545 long long slowlog_entry_id; /* SLOWLOG current entry ID */
546 long long slowlog_log_slower_than; /* SLOWLOG time limit (to get logged) */
547 unsigned long slowlog_max_len; /* SLOWLOG max number of items logged */
e2641e09 548 /* Configuration */
c6ac7d03 549 int verbosity; /* Loglevel in redis.conf */
550 int maxidletime; /* Client timeout in seconds */
551 size_t client_max_querybuf_len; /* Limit for client query buffer length */
552 int dbnum; /* Total number of configured DBs */
553 int daemonize; /* True if running as a daemon */
554 /* AOF persistence */
555 int aof_state; /* REDIS_AOF_(ON|OFF|WAIT_REWRITE) */
2c915bcf 556 int aof_fsync; /* Kind of fsync() policy */
557 char *aof_filename; /* Name of the AOF file */
558 int aof_no_fsync_on_rewrite; /* Don't fsync if a rewrite is in prog. */
559 int aof_rewrite_perc; /* Rewrite AOF if % growth is > M and... */
560 off_t aof_rewrite_min_size; /* the AOF file is at least N bytes. */
561 off_t aof_rewrite_base_size; /* AOF size on latest startup or rewrite. */
562 off_t aof_current_size; /* AOF current size. */
563 int aof_rewrite_scheduled; /* Rewrite once BGSAVE terminates. */
ff2145ad 564 pid_t aof_child_pid; /* PID if rewriting process */
565 sds aof_rewrite_buf; /* buffer taken by parent during oppend only rewrite */
566 sds aof_buf; /* AOF buffer, written before entering the event loop */
567 int aof_fd; /* File descriptor of currently selected AOF file */
568 int aof_selected_db; /* Currently selected DB in AOF */
c6ac7d03 569 time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */
ff2145ad 570 time_t aof_last_fsync; /* UNIX time of last fsync() */
c6ac7d03 571 /* RDB persistence */
572 long long dirty; /* Changes to DB from the last save */
573 long long dirty_before_bgsave; /* Used to restore dirty on failed BGSAVE */
f48cd4b9 574 pid_t rdb_child_pid; /* PID of RDB saving child */
c6ac7d03 575 struct saveparam *saveparams; /* Save points array for RDB */
576 int saveparamslen; /* Number of saving points */
f48cd4b9 577 char *rdb_filename; /* Name of RDB file */
578 int rdb_compression; /* Use compression in RDB? */
36c17a53 579 /* Logging */
c6ac7d03 580 char *logfile; /* Path of log file */
581 int syslog_enabled; /* Is syslog enabled? */
582 char *syslog_ident; /* Syslog ident */
583 int syslog_facility; /* Syslog facility */
f4aa600b 584 /* Slave specific fields */
c6ac7d03 585 char *masterauth; /* AUTH with this password with master */
586 char *masterhost; /* Hostname of master */
587 int masterport; /* Port of master */
588 int repl_ping_slave_period; /* Master pings the salve every N seconds */
589 int repl_timeout; /* Timeout after N seconds of master idle */
590 redisClient *master; /* Client that is master for this slave */
591 int repl_syncio_timeout; /* Timeout for synchronous I/O calls */
1844f990 592 int repl_state; /* Replication status if the instance is a slave */
c6ac7d03 593 off_t repl_transfer_left; /* Bytes left reading .rdb */
594 int repl_transfer_s; /* Slave -> Master SYNC socket */
595 int repl_transfer_fd; /* Slave -> Master SYNC temp file descriptor */
596 char *repl_transfer_tmpfile; /* Slave-> master SYNC temp file name */
597 time_t repl_transfer_lastio; /* Unix time of the latest read, for timeout */
4ebfc455 598 int repl_serve_stale_data; /* Serve stale data when link is down? */
c6ac7d03 599 time_t repl_down_since; /* Unix time at which link with master went down */
f4aa600b 600 /* Limits */
c6ac7d03 601 unsigned int maxclients; /* Max number of simultaneous clients */
602 unsigned long long maxmemory; /* Max number of memory bytes to use */
603 int maxmemory_policy; /* Policy for key evition */
604 int maxmemory_samples; /* Pricision of random sampling */
f4aa600b 605 /* Blocked clients */
c6ac7d03 606 unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
cea8c5cd 607 list *unblocked_clients; /* list of clients to unblock before next loop */
e2641e09 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;
c6ac7d03 613 /* Zip structure config, see redis.conf for more information */
e2641e09 614 size_t hash_max_zipmap_entries;
615 size_t hash_max_zipmap_value;
616 size_t list_max_ziplist_entries;
617 size_t list_max_ziplist_value;
96ffb2fe 618 size_t set_max_intset_entries;
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619 size_t zset_max_ziplist_entries;
620 size_t zset_max_ziplist_value;
c6ac7d03 621 time_t unixtime; /* Unix time sampled every second. */
e2641e09 622 /* Pubsub */
c6ac7d03 623 dict *pubsub_channels; /* Map channels to list of subscribed clients */
624 list *pubsub_patterns; /* A list of pubsub_patterns */
c772d9c6 625 /* Cluster */
c6ac7d03 626 int cluster_enabled; /* Is cluster enabled? */
627 clusterState cluster; /* State of the cluster */
7585836e 628 /* Scripting */
4dd444bb 629 lua_State *lua; /* The Lua interpreter. We use just one for all clients */
c6ac7d03 630 redisClient *lua_client; /* The "fake client" to query Redis from Lua */
631 redisClient *lua_caller; /* The client running EVAL right now, or NULL */
632 dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
633 long long lua_time_limit; /* Script timeout in seconds */
634 long long lua_time_start; /* Start time of script */
4ab8695d 635 int lua_write_dirty; /* True if a write command was called during the
636 execution of the current script. */
9f772cc2 637 int lua_random_dirty; /* True if a random command was called during the
4ab8695d 638 execution of the current script. */
115e3ff3 639 int lua_timedout; /* True if we reached the time limit for script
640 execution. */
4ab8695d 641 int lua_kill; /* Kill the script if true. */
fa5af017 642 /* Assert & bug reportign */
643 char *assert_failed;
644 char *assert_file;
645 int assert_line;
c6ac7d03 646 int bug_report_start; /* True if bug report header was already logged. */
e2641e09 647};
648
649typedef struct pubsubPattern {
650 redisClient *client;
651 robj *pattern;
652} pubsubPattern;
653
654typedef void redisCommandProc(redisClient *c);
9791f0f8 655typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
e2641e09 656struct redisCommand {
657 char *name;
658 redisCommandProc *proc;
659 int arity;
5d02b00f 660 char *sflags; /* Flags as string represenation, one char per flag. */
661 int flags; /* The actual flags, obtained from the 'sflags' field. */
9791f0f8 662 /* Use a function to determine keys arguments in a command line.
c9d0c362 663 * Used for Redis Cluster redirect. */
9791f0f8 664 redisGetKeysProc *getkeys_proc;
e2641e09 665 /* What keys should be loaded in background when calling this command? */
9791f0f8 666 int firstkey; /* The first argument that's a key (0 = no keys) */
667 int lastkey; /* THe last argument that's a key */
668 int keystep; /* The step between first and last key */
0d808ef2 669 long long microseconds, calls;
e2641e09 670};
671
672struct redisFunctionSym {
673 char *name;
674 unsigned long pointer;
675};
676
677typedef struct _redisSortObject {
678 robj *obj;
679 union {
680 double score;
681 robj *cmpobj;
682 } u;
683} redisSortObject;
684
685typedef struct _redisSortOperation {
686 int type;
687 robj *pattern;
688} redisSortOperation;
689
e2641e09 690/* Structure to hold list iteration abstraction. */
691typedef struct {
692 robj *subject;
693 unsigned char encoding;
694 unsigned char direction; /* Iteration direction */
695 unsigned char *zi;
696 listNode *ln;
697} listTypeIterator;
698
699/* Structure for an entry while iterating over a list. */
700typedef struct {
701 listTypeIterator *li;
702 unsigned char *zi; /* Entry in ziplist */
703 listNode *ln; /* Entry in linked list */
704} listTypeEntry;
705
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706/* Structure to hold set iteration abstraction. */
707typedef struct {
708 robj *subject;
709 int encoding;
710 int ii; /* intset iterator */
711 dictIterator *di;
cb72d0f1 712} setTypeIterator;
96ffb2fe 713
e2641e09 714/* Structure to hold hash iteration abstration. Note that iteration over
715 * hashes involves both fields and values. Because it is possible that
716 * not both are required, store pointers in the iterator to avoid
717 * unnecessary memory allocation for fields/values. */
718typedef struct {
719 int encoding;
720 unsigned char *zi;
721 unsigned char *zk, *zv;
722 unsigned int zklen, zvlen;
723
724 dictIterator *di;
725 dictEntry *de;
726} hashTypeIterator;
727
728#define REDIS_HASH_KEY 1
729#define REDIS_HASH_VALUE 2
730
731/*-----------------------------------------------------------------------------
732 * Extern declarations
733 *----------------------------------------------------------------------------*/
734
735extern struct redisServer server;
736extern struct sharedObjectsStruct shared;
737extern dictType setDictType;
738extern dictType zsetDictType;
ecc91094 739extern dictType clusterNodesDictType;
4dd444bb 740extern dictType dbDictType;
e2641e09 741extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
742dictType hashDictType;
743
744/*-----------------------------------------------------------------------------
745 * Functions prototypes
746 *----------------------------------------------------------------------------*/
747
419e1cca 748/* Utils */
749long long ustime(void);
2c2b2085 750long long mstime(void);
419e1cca 751
e2641e09 752/* networking.c -- Networking and Client related operations */
753redisClient *createClient(int fd);
754void closeTimedoutClients(void);
755void freeClient(redisClient *c);
756void resetClient(redisClient *c);
757void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
e2641e09 758void addReply(redisClient *c, robj *obj);
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759void *addDeferredMultiBulkLength(redisClient *c);
760void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
e2641e09 761void addReplySds(redisClient *c, sds s);
762void processInputBuffer(redisClient *c);
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763void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
764void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
e2641e09 765void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
766void addReplyBulk(redisClient *c, robj *obj);
767void addReplyBulkCString(redisClient *c, char *s);
d51ebef5 768void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
769void addReplyBulkLongLong(redisClient *c, long long ll);
e2641e09 770void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
771void addReply(redisClient *c, robj *obj);
772void addReplySds(redisClient *c, sds s);
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773void addReplyError(redisClient *c, char *err);
774void addReplyStatus(redisClient *c, char *status);
e2641e09 775void addReplyDouble(redisClient *c, double d);
776void addReplyLongLong(redisClient *c, long long ll);
0537e7bf 777void addReplyMultiBulkLen(redisClient *c, long length);
1824e3a3 778void copyClientOutputBuffer(redisClient *dst, redisClient *src);
e2641e09 779void *dupClientReplyValue(void *o);
7a1fd61e 780void getClientsMaxBuffers(unsigned long *longest_output_list,
781 unsigned long *biggest_input_buffer);
becf5fdb 782sds getClientInfoString(redisClient *client);
45e7a1ce 783sds getAllClientsInfoString(void);
c1c9d551 784void rewriteClientCommandVector(redisClient *c, int argc, ...);
4dd444bb 785void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
e2641e09 786
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787#ifdef __GNUC__
788void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
789 __attribute__((format(printf, 2, 3)));
790void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
791 __attribute__((format(printf, 2, 3)));
792#else
793void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
794void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
795#endif
796
e2641e09 797/* List data type */
798void listTypeTryConversion(robj *subject, robj *value);
799void listTypePush(robj *subject, robj *value, int where);
800robj *listTypePop(robj *subject, int where);
801unsigned long listTypeLength(robj *subject);
802listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction);
803void listTypeReleaseIterator(listTypeIterator *li);
804int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
805robj *listTypeGet(listTypeEntry *entry);
806void listTypeInsert(listTypeEntry *entry, robj *value, int where);
807int listTypeEqual(listTypeEntry *entry, robj *o);
808void listTypeDelete(listTypeEntry *entry);
809void listTypeConvert(robj *subject, int enc);
810void unblockClientWaitingData(redisClient *c);
811int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
812void popGenericCommand(redisClient *c, int where);
813
814/* MULTI/EXEC/WATCH... */
815void unwatchAllKeys(redisClient *c);
816void initClientMultiState(redisClient *c);
817void freeClientMultiState(redisClient *c);
09e2d9ee 818void queueMultiCommand(redisClient *c);
e2641e09 819void touchWatchedKey(redisDb *db, robj *key);
820void touchWatchedKeysOnFlush(int dbid);
821
822/* Redis object implementation */
823void decrRefCount(void *o);
824void incrRefCount(robj *o);
4dd444bb 825robj *resetRefCount(robj *obj);
e2641e09 826void freeStringObject(robj *o);
827void freeListObject(robj *o);
828void freeSetObject(robj *o);
829void freeZsetObject(robj *o);
830void freeHashObject(robj *o);
831robj *createObject(int type, void *ptr);
832robj *createStringObject(char *ptr, size_t len);
833robj *dupStringObject(robj *o);
5d081931 834int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
e2641e09 835robj *tryObjectEncoding(robj *o);
836robj *getDecodedObject(robj *o);
837size_t stringObjectLen(robj *o);
e2641e09 838robj *createStringObjectFromLongLong(long long value);
5574b53e 839robj *createStringObjectFromLongDouble(long double value);
e2641e09 840robj *createListObject(void);
841robj *createZiplistObject(void);
842robj *createSetObject(void);
96ffb2fe 843robj *createIntsetObject(void);
e2641e09 844robj *createHashObject(void);
845robj *createZsetObject(void);
9e7cee0e 846robj *createZsetZiplistObject(void);
e2641e09 847int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
848int checkType(redisClient *c, robj *o, int type);
849int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
850int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
851int getLongLongFromObject(robj *o, long long *target);
5574b53e 852int getLongDoubleFromObject(robj *o, long double *target);
853int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
e2641e09 854char *strEncoding(int encoding);
855int compareStringObjects(robj *a, robj *b);
856int equalStringObjects(robj *a, robj *b);
ef59a8bc 857unsigned long estimateObjectIdleTime(robj *o);
e2641e09 858
19e61097 859/* Synchronous I/O with timeout */
860int syncWrite(int fd, char *ptr, ssize_t size, int timeout);
861int syncRead(int fd, char *ptr, ssize_t size, int timeout);
862int syncReadLine(int fd, char *ptr, ssize_t size, int timeout);
863
e2641e09 864/* Replication */
865void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
866void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
e2641e09 867void updateSlavesWaitingBgsave(int bgsaveerr);
f4aa600b 868void replicationCron(void);
e2641e09 869
97e7f8ae 870/* Generic persistence functions */
871void startLoading(FILE *fp);
872void loadingProgress(off_t pos);
873void stopLoading(void);
874
e2641e09 875/* RDB persistence */
2e4b0e77 876#include "rdb.h"
e2641e09 877
878/* AOF persistence */
a3fcd6bc 879void flushAppendOnlyFile(int force);
e2641e09 880void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
881void aofRemoveTempFile(pid_t childpid);
882int rewriteAppendOnlyFileBackground(void);
883int loadAppendOnlyFile(char *filename);
884void stopAppendOnly(void);
885int startAppendOnly(void);
36c17a53 886void backgroundRewriteDoneHandler(int exitcode, int bysignal);
e2641e09 887
888/* Sorted sets data type */
c772d9c6 889
890/* Struct to hold a inclusive/exclusive range spec. */
891typedef struct {
892 double min, max;
893 int minex, maxex; /* are min or max exclusive? */
894} zrangespec;
895
e2641e09 896zskiplist *zslCreate(void);
897void zslFree(zskiplist *zsl);
69ef89f2 898zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
8588bfa3 899unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
c772d9c6 900int zslDelete(zskiplist *zsl, double score, robj *obj);
901zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
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902double zzlGetScore(unsigned char *sptr);
903void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
904void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
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PN
905unsigned int zsetLength(robj *zobj);
906void zsetConvert(robj *zobj, int encoding);
e2641e09 907
908/* Core functions */
909void freeMemoryIfNeeded(void);
910int processCommand(redisClient *c);
633a9410 911void setupSignalHandlers(void);
1b1f47c9 912struct redisCommand *lookupCommand(sds name);
913struct redisCommand *lookupCommandByCString(char *s);
09e2d9ee 914void call(redisClient *c);
e2641e09 915int prepareForShutdown();
916void redisLog(int level, const char *fmt, ...);
288f811f 917void redisLogRaw(int level, const char *msg);
e2641e09 918void usage();
919void updateDictResizePolicy(void);
920int htNeedsResize(dict *dict);
921void oom(const char *msg);
1b1f47c9 922void populateCommandTable(void);
d7ed7fd2 923void resetCommandTableStats(void);
e2641e09 924
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925/* Set data type */
926robj *setTypeCreate(robj *value);
927int setTypeAdd(robj *subject, robj *value);
928int setTypeRemove(robj *subject, robj *value);
929int setTypeIsMember(robj *subject, robj *value);
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930setTypeIterator *setTypeInitIterator(robj *subject);
931void setTypeReleaseIterator(setTypeIterator *si);
1b508da7 932int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
933robj *setTypeNextObject(setTypeIterator *si);
dd48de74 934int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
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935unsigned long setTypeSize(robj *subject);
936void setTypeConvert(robj *subject, int enc);
937
e2641e09 938/* Hash data type */
939void convertToRealHash(robj *o);
940void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
941void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
3d24304f 942int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen);
943robj *hashTypeGetObject(robj *o, robj *key);
e2641e09 944int hashTypeExists(robj *o, robj *key);
945int hashTypeSet(robj *o, robj *key, robj *value);
946int hashTypeDelete(robj *o, robj *key);
947unsigned long hashTypeLength(robj *o);
948hashTypeIterator *hashTypeInitIterator(robj *subject);
949void hashTypeReleaseIterator(hashTypeIterator *hi);
950int hashTypeNext(hashTypeIterator *hi);
8c304be3 951int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen);
952robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
e2641e09 953robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
954
955/* Pub / Sub */
956int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
957int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
958void freePubsubPattern(void *p);
959int listMatchPubsubPattern(void *a, void *b);
d38ef520 960int pubsubPublishMessage(robj *channel, robj *message);
e2641e09 961
e2641e09 962/* Configuration */
67c6f0f6 963void loadServerConfig(char *filename, char *options);
e2641e09 964void appendServerSaveParams(time_t seconds, int changes);
965void resetServerSaveParams();
966
967/* db.c -- Keyspace access API */
968int removeExpire(redisDb *db, robj *key);
bcf2995c 969void propagateExpire(redisDb *db, robj *key);
e2641e09 970int expireIfNeeded(redisDb *db, robj *key);
7dcc10b6 971long long getExpire(redisDb *db, robj *key);
972void setExpire(redisDb *db, robj *key, long long when);
e2641e09 973robj *lookupKey(redisDb *db, robj *key);
974robj *lookupKeyRead(redisDb *db, robj *key);
975robj *lookupKeyWrite(redisDb *db, robj *key);
976robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
977robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
f85cd526 978void dbAdd(redisDb *db, robj *key, robj *val);
979void dbOverwrite(redisDb *db, robj *key, robj *val);
980void setKey(redisDb *db, robj *key, robj *val);
e2641e09 981int dbExists(redisDb *db, robj *key);
982robj *dbRandomKey(redisDb *db);
983int dbDelete(redisDb *db, robj *key);
984long long emptyDb();
985int selectDb(redisClient *c, int id);
cea8c5cd 986void signalModifiedKey(redisDb *db, robj *key);
987void signalFlushedDb(int dbid);
484354ff 988unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
e2641e09 989
9791f0f8 990/* API to get key arguments from commands */
991#define REDIS_GETKEYS_ALL 0
992#define REDIS_GETKEYS_PRELOAD 1
993int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
994void getKeysFreeResult(int *result);
995int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
996int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
997int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
998
ecc91094 999/* Cluster */
1000void clusterInit(void);
1001unsigned short crc16(const char *buf, int len);
1002unsigned int keyHashSlot(char *key, int keylen);
1003clusterNode *createClusterNode(char *nodename, int flags);
1004int clusterAddNode(clusterNode *node);
1005void clusterCron(void);
eda827f8 1006clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
c563ce46 1007void clusterPropagatePublish(robj *channel, robj *message);
ecc91094 1008
7585836e 1009/* Scripting */
1010void scriptingInit(void);
1011
e2641e09 1012/* Git SHA1 */
1013char *redisGitSHA1(void);
1014char *redisGitDirty(void);
1015
1016/* Commands prototypes */
1017void authCommand(redisClient *c);
1018void pingCommand(redisClient *c);
1019void echoCommand(redisClient *c);
1020void setCommand(redisClient *c);
1021void setnxCommand(redisClient *c);
1022void setexCommand(redisClient *c);
12d293ca 1023void psetexCommand(redisClient *c);
e2641e09 1024void getCommand(redisClient *c);
1025void delCommand(redisClient *c);
1026void existsCommand(redisClient *c);
3c1bf495
PN
1027void setbitCommand(redisClient *c);
1028void getbitCommand(redisClient *c);
9f9e1cea 1029void setrangeCommand(redisClient *c);
ef11bccc 1030void getrangeCommand(redisClient *c);
e2641e09 1031void incrCommand(redisClient *c);
1032void decrCommand(redisClient *c);
1033void incrbyCommand(redisClient *c);
1034void decrbyCommand(redisClient *c);
5574b53e 1035void incrbyfloatCommand(redisClient *c);
e2641e09 1036void selectCommand(redisClient *c);
1037void randomkeyCommand(redisClient *c);
1038void keysCommand(redisClient *c);
1039void dbsizeCommand(redisClient *c);
1040void lastsaveCommand(redisClient *c);
1041void saveCommand(redisClient *c);
1042void bgsaveCommand(redisClient *c);
1043void bgrewriteaofCommand(redisClient *c);
1044void shutdownCommand(redisClient *c);
1045void moveCommand(redisClient *c);
1046void renameCommand(redisClient *c);
1047void renamenxCommand(redisClient *c);
1048void lpushCommand(redisClient *c);
1049void rpushCommand(redisClient *c);
1050void lpushxCommand(redisClient *c);
1051void rpushxCommand(redisClient *c);
1052void linsertCommand(redisClient *c);
1053void lpopCommand(redisClient *c);
1054void rpopCommand(redisClient *c);
1055void llenCommand(redisClient *c);
1056void lindexCommand(redisClient *c);
1057void lrangeCommand(redisClient *c);
1058void ltrimCommand(redisClient *c);
1059void typeCommand(redisClient *c);
1060void lsetCommand(redisClient *c);
1061void saddCommand(redisClient *c);
1062void sremCommand(redisClient *c);
1063void smoveCommand(redisClient *c);
1064void sismemberCommand(redisClient *c);
1065void scardCommand(redisClient *c);
1066void spopCommand(redisClient *c);
1067void srandmemberCommand(redisClient *c);
1068void sinterCommand(redisClient *c);
1069void sinterstoreCommand(redisClient *c);
1070void sunionCommand(redisClient *c);
1071void sunionstoreCommand(redisClient *c);
1072void sdiffCommand(redisClient *c);
1073void sdiffstoreCommand(redisClient *c);
1074void syncCommand(redisClient *c);
1075void flushdbCommand(redisClient *c);
1076void flushallCommand(redisClient *c);
1077void sortCommand(redisClient *c);
1078void lremCommand(redisClient *c);
8a979f03 1079void rpoplpushCommand(redisClient *c);
e2641e09 1080void infoCommand(redisClient *c);
1081void mgetCommand(redisClient *c);
1082void monitorCommand(redisClient *c);
1083void expireCommand(redisClient *c);
1084void expireatCommand(redisClient *c);
12d293ca 1085void pexpireCommand(redisClient *c);
1086void pexpireatCommand(redisClient *c);
e2641e09 1087void getsetCommand(redisClient *c);
1088void ttlCommand(redisClient *c);
12d293ca 1089void pttlCommand(redisClient *c);
a539d29a 1090void persistCommand(redisClient *c);
e2641e09 1091void slaveofCommand(redisClient *c);
1092void debugCommand(redisClient *c);
1093void msetCommand(redisClient *c);
1094void msetnxCommand(redisClient *c);
1095void zaddCommand(redisClient *c);
1096void zincrbyCommand(redisClient *c);
1097void zrangeCommand(redisClient *c);
1098void zrangebyscoreCommand(redisClient *c);
25bb8a44 1099void zrevrangebyscoreCommand(redisClient *c);
e2641e09 1100void zcountCommand(redisClient *c);
1101void zrevrangeCommand(redisClient *c);
1102void zcardCommand(redisClient *c);
1103void zremCommand(redisClient *c);
1104void zscoreCommand(redisClient *c);
1105void zremrangebyscoreCommand(redisClient *c);
1106void multiCommand(redisClient *c);
1107void execCommand(redisClient *c);
1108void discardCommand(redisClient *c);
1109void blpopCommand(redisClient *c);
1110void brpopCommand(redisClient *c);
b2a7fd0c 1111void brpoplpushCommand(redisClient *c);
e2641e09 1112void appendCommand(redisClient *c);
80091bba 1113void strlenCommand(redisClient *c);
e2641e09 1114void zrankCommand(redisClient *c);
1115void zrevrankCommand(redisClient *c);
1116void hsetCommand(redisClient *c);
1117void hsetnxCommand(redisClient *c);
1118void hgetCommand(redisClient *c);
1119void hmsetCommand(redisClient *c);
1120void hmgetCommand(redisClient *c);
1121void hdelCommand(redisClient *c);
1122void hlenCommand(redisClient *c);
1123void zremrangebyrankCommand(redisClient *c);
1124void zunionstoreCommand(redisClient *c);
1125void zinterstoreCommand(redisClient *c);
1126void hkeysCommand(redisClient *c);
1127void hvalsCommand(redisClient *c);
1128void hgetallCommand(redisClient *c);
1129void hexistsCommand(redisClient *c);
1130void configCommand(redisClient *c);
1131void hincrbyCommand(redisClient *c);
68bfe993 1132void hincrbyfloatCommand(redisClient *c);
e2641e09 1133void subscribeCommand(redisClient *c);
1134void unsubscribeCommand(redisClient *c);
1135void psubscribeCommand(redisClient *c);
1136void punsubscribeCommand(redisClient *c);
1137void publishCommand(redisClient *c);
1138void watchCommand(redisClient *c);
1139void unwatchCommand(redisClient *c);
ecc91094 1140void clusterCommand(redisClient *c);
1141void restoreCommand(redisClient *c);
1142void migrateCommand(redisClient *c);
6856c7b4 1143void askingCommand(redisClient *c);
626f6b2d 1144void dumpCommand(redisClient *c);
ece74202 1145void objectCommand(redisClient *c);
3cd12b56 1146void clientCommand(redisClient *c);
7585836e 1147void evalCommand(redisClient *c);
7229d60d 1148void evalShaCommand(redisClient *c);
070e3945 1149void scriptCommand(redisClient *c);
e2641e09 1150
b3aa6d71 1151#if defined(__GNUC__)
b3aa6d71 1152void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1153void free(void *ptr) __attribute__ ((deprecated));
1154void *malloc(size_t size) __attribute__ ((deprecated));
1155void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1156#endif
1157
e3e69935 1158/* Debugging stuff */
bab205f7 1159void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
e3e69935 1160void _redisAssert(char *estr, char *file, int line);
1161void _redisPanic(char *msg, char *file, int line);
fa5af017 1162void bugReportStart(void);
00010fa9 1163void redisLogObjectDebugInfo(robj *o);
e3e69935 1164
e2641e09 1165#endif