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Make sure that SELECT argument is an integer or return an error.
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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>
eea8c7a4 23#include <signal.h>
e2641e09 24
daa70b17 25#include "ae.h" /* Event driven programming library */
26#include "sds.h" /* Dynamic safe strings */
27#include "dict.h" /* Hash tables */
28#include "adlist.h" /* Linked lists */
e2641e09 29#include "zmalloc.h" /* total memory usage aware version of malloc/free */
daa70b17 30#include "anet.h" /* Networking the easy way */
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 */
a8a981a8 41#define REDIS_HZ 100 /* Time interrupt calls/sec. */
e2641e09 42#define REDIS_SERVERPORT 6379 /* TCP port */
3570629f 43#define REDIS_MAXIDLETIME 0 /* default client timeout: infinite */
e2641e09 44#define REDIS_DEFAULT_DBNUM 16
45#define REDIS_CONFIGLINE_MAX 1024
e2641e09 46#define REDIS_EXPIRELOOKUPS_PER_CRON 10 /* lookup 10 expires per loop */
f7f2b261 47#define REDIS_EXPIRELOOKUPS_TIME_PERC 25 /* CPU max % for keys collection */
e2641e09 48#define REDIS_MAX_WRITE_PER_EVENT (1024*64)
ae15f750 49#define REDIS_SHARED_SELECT_CMDS 10
e2641e09 50#define REDIS_SHARED_INTEGERS 10000
355f8591 51#define REDIS_SHARED_BULKHDR_LEN 32
e1a586ee 52#define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */
2c915bcf 53#define REDIS_AOF_REWRITE_PERC 100
54#define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024)
55#define REDIS_AOF_REWRITE_ITEMS_PER_CMD 64
daa70b17 56#define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000
590d55a2 57#define REDIS_SLOWLOG_MAX_LEN 128
58732c23 58#define REDIS_MAX_CLIENTS 10000
4b3865cb 59#define REDIS_AUTHPASS_MAX_LEN 512
48d26a48 60#define REDIS_DEFAULT_SLAVE_PRIORITY 100
8996bf77 61#define REDIS_REPL_TIMEOUT 60
62#define REDIS_REPL_PING_SLAVE_PERIOD 10
44f508f1 63#define REDIS_RUN_ID_SIZE 40
250e7f69 64#define REDIS_OPS_SEC_SAMPLES 16
44f508f1 65
f42e2f1b 66/* Protocol and I/O related defines */
67#define REDIS_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */
68#define REDIS_IOBUF_LEN (1024*16) /* Generic I/O buffer size */
69#define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
11e0c4c5 70#define REDIS_INLINE_MAX_SIZE (1024*64) /* Max size of inline reads */
f42e2f1b 71#define REDIS_MBULK_BIG_ARG (1024*32)
8996bf77 72
e2641e09 73/* Hash table parameters */
74#define REDIS_HT_MINFILL 10 /* Minimal hash table fill 10% */
75
5d02b00f 76/* Command flags. Please check the command table defined in the redis.c file
77 * for more information about the meaning of every flag. */
78#define REDIS_CMD_WRITE 1 /* "w" flag */
79#define REDIS_CMD_READONLY 2 /* "r" flag */
80#define REDIS_CMD_DENYOOM 4 /* "m" flag */
81#define REDIS_CMD_FORCE_REPLICATION 8 /* "f" flag */
82#define REDIS_CMD_ADMIN 16 /* "a" flag */
83#define REDIS_CMD_PUBSUB 32 /* "p" flag */
b60ed6e8 84#define REDIS_CMD_NOSCRIPT 64 /* "s" flag */
85#define REDIS_CMD_RANDOM 128 /* "R" flag */
548efd91 86#define REDIS_CMD_SORT_FOR_SCRIPT 256 /* "S" flag */
3bb3f125 87#define REDIS_CMD_LOADING 512 /* "l" flag */
88#define REDIS_CMD_STALE 1024 /* "t" flag */
e2641e09 89
90/* Object types */
91#define REDIS_STRING 0
92#define REDIS_LIST 1
93#define REDIS_SET 2
94#define REDIS_ZSET 3
95#define REDIS_HASH 4
e12b27ac 96
e2641e09 97/* Objects encoding. Some kind of objects like Strings and Hashes can be
98 * internally represented in multiple ways. The 'encoding' field of the object
99 * is set to one of this fields for this object. */
100#define REDIS_ENCODING_RAW 0 /* Raw representation */
101#define REDIS_ENCODING_INT 1 /* Encoded as integer */
102#define REDIS_ENCODING_HT 2 /* Encoded as hash table */
103#define REDIS_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
104#define REDIS_ENCODING_LINKEDLIST 4 /* Encoded as regular linked list */
105#define REDIS_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
96ffb2fe 106#define REDIS_ENCODING_INTSET 6 /* Encoded as intset */
0b7f6d09 107#define REDIS_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
e2641e09 108
e2641e09 109/* Defines related to the dump file format. To store 32 bits lengths for short
110 * keys requires a lot of space, so we check the most significant 2 bits of
111 * the first byte to interpreter the length:
112 *
113 * 00|000000 => if the two MSB are 00 the len is the 6 bits of this byte
114 * 01|000000 00000000 => 01, the len is 14 byes, 6 bits + 8 bits of next byte
115 * 10|000000 [32 bit integer] => if it's 01, a full 32 bit len will follow
116 * 11|000000 this means: specially encoded object will follow. The six bits
117 * number specify the kind of object that follows.
118 * See the REDIS_RDB_ENC_* defines.
119 *
120 * Lenghts up to 63 are stored using a single byte, most DB keys, and may
121 * values, will fit inside. */
122#define REDIS_RDB_6BITLEN 0
123#define REDIS_RDB_14BITLEN 1
124#define REDIS_RDB_32BITLEN 2
125#define REDIS_RDB_ENCVAL 3
126#define REDIS_RDB_LENERR UINT_MAX
127
128/* When a length of a string object stored on disk has the first two bits
129 * set, the remaining two bits specify a special encoding for the object
130 * accordingly to the following defines: */
131#define REDIS_RDB_ENC_INT8 0 /* 8 bit signed integer */
132#define REDIS_RDB_ENC_INT16 1 /* 16 bit signed integer */
133#define REDIS_RDB_ENC_INT32 2 /* 32 bit signed integer */
134#define REDIS_RDB_ENC_LZF 3 /* string compressed with FASTLZ */
135
c6ac7d03 136/* AOF states */
137#define REDIS_AOF_OFF 0 /* AOF is off */
138#define REDIS_AOF_ON 1 /* AOF is on */
139#define REDIS_AOF_WAIT_REWRITE 2 /* AOF waits rewrite to start appending */
140
e2641e09 141/* Client flags */
142#define REDIS_SLAVE 1 /* This client is a slave server */
143#define REDIS_MASTER 2 /* This client is a master server */
144#define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
145#define REDIS_MULTI 8 /* This client is in a MULTI context */
146#define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
e2641e09 147#define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
5e78edb3 148#define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
3bcffcbe
PN
149#define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
150 server.unblocked_clients */
7156f43c 151#define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */
6856c7b4 152#define REDIS_ASKING 1024 /* Client issued the ASKING command */
7eac2a75 153#define REDIS_CLOSE_ASAP 2048 /* Close this client ASAP */
cd8788f2
PN
154
155/* Client request types */
156#define REDIS_REQ_INLINE 1
157#define REDIS_REQ_MULTIBULK 2
e2641e09 158
498dc555 159/* Client classes for client limits, currently used only for
160 * the max-client-output-buffer limit implementation. */
161#define REDIS_CLIENT_LIMIT_CLASS_NORMAL 0
162#define REDIS_CLIENT_LIMIT_CLASS_SLAVE 1
163#define REDIS_CLIENT_LIMIT_CLASS_PUBSUB 2
7eac2a75 164#define REDIS_CLIENT_LIMIT_NUM_CLASSES 3
498dc555 165
e2641e09 166/* Slave replication state - slave side */
a3309139
PN
167#define REDIS_REPL_NONE 0 /* No active replication */
168#define REDIS_REPL_CONNECT 1 /* Must connect to master */
b075621f 169#define REDIS_REPL_CONNECTING 2 /* Connecting to master */
fd2a8951 170#define REDIS_REPL_RECEIVE_PONG 3 /* Wait for PING reply */
171#define REDIS_REPL_TRANSFER 4 /* Receiving .rdb from master */
172#define REDIS_REPL_CONNECTED 5 /* Connected to master */
e2641e09 173
890a2ed9
PN
174/* Synchronous read timeout - slave side */
175#define REDIS_REPL_SYNCIO_TIMEOUT 5
e2641e09 176
177/* Slave replication state - from the point of view of master
178 * Note that in SEND_BULK and ONLINE state the slave receives new updates
179 * in its output queue. In the WAIT_BGSAVE state instead the server is waiting
180 * to start the next background saving in order to send updates to it. */
181#define REDIS_REPL_WAIT_BGSAVE_START 3 /* master waits bgsave to start feeding it */
182#define REDIS_REPL_WAIT_BGSAVE_END 4 /* master waits bgsave to start bulk DB transmission */
183#define REDIS_REPL_SEND_BULK 5 /* master is sending the bulk DB */
184#define REDIS_REPL_ONLINE 6 /* bulk DB already transmitted, receive updates */
185
186/* List related stuff */
187#define REDIS_HEAD 0
188#define REDIS_TAIL 1
189
190/* Sort operations */
191#define REDIS_SORT_GET 0
192#define REDIS_SORT_ASC 1
193#define REDIS_SORT_DESC 2
194#define REDIS_SORTKEY_MAX 1024
195
196/* Log levels */
197#define REDIS_DEBUG 0
198#define REDIS_VERBOSE 1
199#define REDIS_NOTICE 2
200#define REDIS_WARNING 3
996d503d 201#define REDIS_LOG_RAW (1<<10) /* Modifier to log without timestamp */
e2641e09 202
203/* Anti-warning macro... */
204#define REDIS_NOTUSED(V) ((void) V)
205
206#define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^32 elements */
207#define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
208
209/* Append only defines */
2c915bcf 210#define AOF_FSYNC_NO 0
211#define AOF_FSYNC_ALWAYS 1
212#define AOF_FSYNC_EVERYSEC 2
e2641e09 213
214/* Zip structure related defaults */
ebd85e9a
PN
215#define REDIS_HASH_MAX_ZIPLIST_ENTRIES 512
216#define REDIS_HASH_MAX_ZIPLIST_VALUE 64
6a246b1e 217#define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512
218#define REDIS_LIST_MAX_ZIPLIST_VALUE 64
219#define REDIS_SET_MAX_INTSET_ENTRIES 512
3ea204e1
PN
220#define REDIS_ZSET_MAX_ZIPLIST_ENTRIES 128
221#define REDIS_ZSET_MAX_ZIPLIST_VALUE 64
e2641e09 222
223/* Sets operations codes */
224#define REDIS_OP_UNION 0
225#define REDIS_OP_DIFF 1
226#define REDIS_OP_INTER 2
227
165346ca 228/* Redis maxmemory strategies */
229#define REDIS_MAXMEMORY_VOLATILE_LRU 0
230#define REDIS_MAXMEMORY_VOLATILE_TTL 1
231#define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
232#define REDIS_MAXMEMORY_ALLKEYS_LRU 3
233#define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
5402c426 234#define REDIS_MAXMEMORY_NO_EVICTION 5
165346ca 235
eeffcf38 236/* Scripting */
8cb8d417 237#define REDIS_LUA_TIME_LIMIT 5000 /* milliseconds */
eeffcf38 238
12d293ca 239/* Units */
240#define UNIT_SECONDS 0
241#define UNIT_MILLISECONDS 1
242
4ab8695d 243/* SHUTDOWN flags */
244#define REDIS_SHUTDOWN_SAVE 1 /* Force SAVE on SHUTDOWN even if no save
245 points are configured. */
246#define REDIS_SHUTDOWN_NOSAVE 2 /* Don't SAVE on SHUTDOWN. */
247
ce8b772b 248/* Command call flags, see call() function */
249#define REDIS_CALL_NONE 0
250#define REDIS_CALL_SLOWLOG 1
251#define REDIS_CALL_STATS 2
252#define REDIS_CALL_PROPAGATE 4
253#define REDIS_CALL_FULL (REDIS_CALL_SLOWLOG | REDIS_CALL_STATS | REDIS_CALL_PROPAGATE)
254
ad08d059 255/* Command propagation flags, see propagate() function */
256#define REDIS_PROPAGATE_NONE 0
257#define REDIS_PROPAGATE_AOF 1
258#define REDIS_PROPAGATE_REPL 2
259
e2641e09 260/* We can print the stacktrace, so our assert is defined this way: */
bab205f7 261#define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
e2641e09 262#define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
263#define redisPanic(_e) _redisPanic(#_e,__FILE__,__LINE__),_exit(1)
e2641e09 264
265/*-----------------------------------------------------------------------------
266 * Data types
267 *----------------------------------------------------------------------------*/
268
269/* A redis object, that is a type able to hold a string / list / set */
270
271/* The actual Redis Object */
ef59a8bc 272#define REDIS_LRU_CLOCK_MAX ((1<<21)-1) /* Max value of obj->lru */
165346ca 273#define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */
e2641e09 274typedef struct redisObject {
275 unsigned type:4;
3be00d7e 276 unsigned notused:2; /* Not used */
e2641e09 277 unsigned encoding:4;
278 unsigned lru:22; /* lru time (relative to server.lruclock) */
279 int refcount;
280 void *ptr;
e2641e09 281} robj;
282
e2641e09 283/* Macro used to initalize a Redis object allocated on the stack.
284 * Note that this macro is taken near the structure definition to make sure
285 * we'll update it when the structure is changed, to avoid bugs like
286 * bug #85 introduced exactly in this way. */
287#define initStaticStringObject(_var,_ptr) do { \
288 _var.refcount = 1; \
289 _var.type = REDIS_STRING; \
290 _var.encoding = REDIS_ENCODING_RAW; \
291 _var.ptr = _ptr; \
e2641e09 292} while(0);
293
294typedef struct redisDb {
295 dict *dict; /* The keyspace for this DB */
296 dict *expires; /* Timeout of keys with a timeout set */
297 dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */
e2641e09 298 dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
299 int id;
300} redisDb;
301
302/* Client MULTI/EXEC state */
303typedef struct multiCmd {
304 robj **argv;
305 int argc;
306 struct redisCommand *cmd;
307} multiCmd;
308
309typedef struct multiState {
310 multiCmd *commands; /* Array of MULTI commands */
311 int count; /* Total number of MULTI commands */
312} multiState;
313
357a8417
DJMM
314typedef struct blockingState {
315 robj **keys; /* The key we are waiting to terminate a blocking
316 * operation such as BLPOP. Otherwise NULL. */
317 int count; /* Number of blocking keys */
318 time_t timeout; /* Blocking operation timeout. If UNIX current time
319 * is >= timeout then the operation timed out. */
320 robj *target; /* The key that should receive the element,
321 * for BRPOPLPUSH. */
322} blockingState;
323
e2641e09 324/* With multiplexing we need to take per-clinet state.
325 * Clients are taken in a liked list. */
326typedef struct redisClient {
327 int fd;
328 redisDb *db;
329 int dictid;
330 sds querybuf;
9fa9ccb0 331 size_t querybuf_peak; /* Recent (100ms or more) peak of querybuf size */
cd8788f2
PN
332 int argc;
333 robj **argv;
2c74a9f9 334 struct redisCommand *cmd, *lastcmd;
cd8788f2
PN
335 int reqtype;
336 int multibulklen; /* number of multi bulk arguments left to read */
337 long bulklen; /* length of bulk argument in multi bulk request */
e2641e09 338 list *reply;
3853c168 339 unsigned long reply_bytes; /* Tot bytes of objects in reply list */
e2641e09 340 int sentlen;
41e8e5cb 341 time_t ctime; /* Client creation time */
e2641e09 342 time_t lastinteraction; /* time of the last interaction, used for timeout */
7eac2a75 343 time_t obuf_soft_limit_reached_time;
e2641e09 344 int flags; /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */
345 int slaveseldb; /* slave selected db, if this client is a slave */
346 int authenticated; /* when requirepass is non-NULL */
347 int replstate; /* replication state if this is a slave */
348 int repldbfd; /* replication DB file descriptor */
349 long repldboff; /* replication DB file offset */
350 off_t repldbsize; /* replication DB file size */
dbd8c753 351 int slave_listening_port; /* As configured with: SLAVECONF listening-port */
e2641e09 352 multiState mstate; /* MULTI/EXEC state */
e3c51c4b 353 blockingState bpop; /* blocking state */
e2641e09 354 list *io_keys; /* Keys this client is waiting to be loaded from the
355 * swap file in order to continue. */
356 list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
357 dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
358 list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
834ef78e
PN
359
360 /* Response buffer */
361 int bufpos;
f3357792 362 char buf[REDIS_REPLY_CHUNK_BYTES];
e2641e09 363} redisClient;
364
365struct saveparam {
366 time_t seconds;
367 int changes;
368};
369
370struct sharedObjectsStruct {
371 robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
372 *colon, *nullbulk, *nullmultibulk, *queued,
373 *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
c25e7eaf 374 *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *bgsaveerr,
0b08d648 375 *masterdownerr, *roslaveerr,
376 *oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk,
ae15f750
JJ
377 *unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *rpop, *lpop,
378 *select[REDIS_SHARED_SELECT_CMDS],
355f8591 379 *integers[REDIS_SHARED_INTEGERS],
380 *mbulkhdr[REDIS_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
381 *bulkhdr[REDIS_SHARED_BULKHDR_LEN]; /* "$<value>\r\n" */
e2641e09 382};
383
c772d9c6 384/* ZSETs use a specialized version of Skiplists */
385typedef struct zskiplistNode {
386 robj *obj;
387 double score;
388 struct zskiplistNode *backward;
389 struct zskiplistLevel {
390 struct zskiplistNode *forward;
391 unsigned int span;
392 } level[];
393} zskiplistNode;
394
395typedef struct zskiplist {
396 struct zskiplistNode *header, *tail;
397 unsigned long length;
398 int level;
399} zskiplist;
400
401typedef struct zset {
402 dict *dict;
403 zskiplist *zsl;
404} zset;
405
7eac2a75 406typedef struct clientBufferLimitsConfig {
7fe8d49a 407 unsigned long long hard_limit_bytes;
408 unsigned long long soft_limit_bytes;
7eac2a75 409 time_t soft_limit_seconds;
410} clientBufferLimitsConfig;
411
78d6a22d 412/* The redisOp structure defines a Redis Operation, that is an instance of
413 * a command with an argument vector, database ID, propagation target
414 * (REDIS_PROPAGATE_*), and command pointer.
415 *
416 * Currently only used to additionally propagate more commands to AOF/Replication
417 * after the propagation of the executed command. */
418typedef struct redisOp {
eeb34eff 419 robj **argv;
420 int argc, dbid, target;
421 struct redisCommand *cmd;
78d6a22d 422} redisOp;
423
424/* Defines an array of Redis operations. There is an API to add to this
425 * structure in a easy way.
426 *
427 * redisOpArrayInit();
428 * redisOpArrayAppend();
429 * redisOpArrayFree();
430 */
431typedef struct redisOpArray {
432 redisOp *ops;
433 int numops;
434} redisOpArray;
eeb34eff 435
ecc91094 436/*-----------------------------------------------------------------------------
437 * Global server state
438 *----------------------------------------------------------------------------*/
439
e2641e09 440struct redisServer {
5b831607 441 /* General */
5b831607 442 redisDb *db;
443 dict *commands; /* Command table hahs table */
444 aeEventLoop *el;
c6ac7d03 445 unsigned lruclock:22; /* Clock incrementing every minute, for LRU */
446 unsigned lruclock_padding:10;
447 int shutdown_asap; /* SHUTDOWN needed ASAP */
448 int activerehashing; /* Incremental rehash in serverCron() */
449 char *requirepass; /* Pass for AUTH command, or NULL */
450 char *pidfile; /* PID file path */
75eaac5c 451 int arch_bits; /* 32 or 64 depending on sizeof(long) */
c25e7eaf 452 int cronloops; /* Number of times the cron function run */
91d664d6 453 char runid[REDIS_RUN_ID_SIZE+1]; /* ID always different at every exec. */
5b831607 454 /* Networking */
c6ac7d03 455 int port; /* TCP listening port */
456 char *bindaddr; /* Bind address or NULL */
457 char *unixsocket; /* UNIX socket path */
458 mode_t unixsocketperm; /* UNIX socket permission */
459 int ipfd; /* TCP socket file descriptor */
460 int sofd; /* Unix socket file descriptor */
c6ac7d03 461 list *clients; /* List of active clients */
7eac2a75 462 list *clients_to_close; /* Clients to close asynchronously */
c6ac7d03 463 list *slaves, *monitors; /* List of slaves and MONITORs */
00010fa9 464 redisClient *current_client; /* Current client, only used on crash report */
c6ac7d03 465 char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
97e7f8ae 466 /* RDB / AOF loading information */
c6ac7d03 467 int loading; /* We are loading data from disk if true */
97e7f8ae 468 off_t loading_total_bytes;
469 off_t loading_loaded_bytes;
470 time_t loading_start_time;
4ebfc455 471 /* Fast pointers to often looked up command */
eeb34eff 472 struct redisCommand *delCommand, *multiCommand, *lpushCommand;
e2641e09 473 /* Fields used only for stats */
c6ac7d03 474 time_t stat_starttime; /* Server start time */
475 long long stat_numcommands; /* Number of processed commands */
476 long long stat_numconnections; /* Number of connections received */
477 long long stat_expiredkeys; /* Number of expired keys */
478 long long stat_evictedkeys; /* Number of evicted keys (maxmemory) */
479 long long stat_keyspace_hits; /* Number of successful lookups of keys */
480 long long stat_keyspace_misses; /* Number of failed lookups of keys */
481 size_t stat_peak_memory; /* Max used memory record */
482 long long stat_fork_time; /* Time needed to perform latets fork() */
483 long long stat_rejected_conn; /* Clients rejected because of maxclients */
484 list *slowlog; /* SLOWLOG list of commands */
485 long long slowlog_entry_id; /* SLOWLOG current entry ID */
486 long long slowlog_log_slower_than; /* SLOWLOG time limit (to get logged) */
487 unsigned long slowlog_max_len; /* SLOWLOG max number of items logged */
250e7f69 488 /* The following two are used to track instantaneous "load" in terms
489 * of operations per second. */
490 long long ops_sec_last_sample_time; /* Timestamp of last sample (in ms) */
491 long long ops_sec_last_sample_ops; /* numcommands in last sample */
492 long long ops_sec_samples[REDIS_OPS_SEC_SAMPLES];
493 int ops_sec_idx;
e2641e09 494 /* Configuration */
c6ac7d03 495 int verbosity; /* Loglevel in redis.conf */
496 int maxidletime; /* Client timeout in seconds */
497 size_t client_max_querybuf_len; /* Limit for client query buffer length */
498 int dbnum; /* Total number of configured DBs */
499 int daemonize; /* True if running as a daemon */
7eac2a75 500 clientBufferLimitsConfig client_obuf_limits[REDIS_CLIENT_LIMIT_NUM_CLASSES];
c6ac7d03 501 /* AOF persistence */
502 int aof_state; /* REDIS_AOF_(ON|OFF|WAIT_REWRITE) */
2c915bcf 503 int aof_fsync; /* Kind of fsync() policy */
504 char *aof_filename; /* Name of the AOF file */
505 int aof_no_fsync_on_rewrite; /* Don't fsync if a rewrite is in prog. */
506 int aof_rewrite_perc; /* Rewrite AOF if % growth is > M and... */
507 off_t aof_rewrite_min_size; /* the AOF file is at least N bytes. */
508 off_t aof_rewrite_base_size; /* AOF size on latest startup or rewrite. */
509 off_t aof_current_size; /* AOF current size. */
510 int aof_rewrite_scheduled; /* Rewrite once BGSAVE terminates. */
ff2145ad 511 pid_t aof_child_pid; /* PID if rewriting process */
edb95253 512 list *aof_rewrite_buf_blocks; /* Hold changes during an AOF rewrite. */
ff2145ad 513 sds aof_buf; /* AOF buffer, written before entering the event loop */
514 int aof_fd; /* File descriptor of currently selected AOF file */
515 int aof_selected_db; /* Currently selected DB in AOF */
c6ac7d03 516 time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */
ff2145ad 517 time_t aof_last_fsync; /* UNIX time of last fsync() */
6b4d92e2 518 time_t aof_rewrite_time_last; /* Time used by last AOF rewrite run. */
519 time_t aof_rewrite_time_start; /* Current AOF rewrite start time. */
f00b0844 520 int aof_lastbgrewrite_status; /* REDIS_OK or REDIS_ERR */
81f32c7b 521 unsigned long aof_delayed_fsync; /* delayed AOF fsync() counter */
c6ac7d03 522 /* RDB persistence */
523 long long dirty; /* Changes to DB from the last save */
524 long long dirty_before_bgsave; /* Used to restore dirty on failed BGSAVE */
f48cd4b9 525 pid_t rdb_child_pid; /* PID of RDB saving child */
c6ac7d03 526 struct saveparam *saveparams; /* Save points array for RDB */
527 int saveparamslen; /* Number of saving points */
f48cd4b9 528 char *rdb_filename; /* Name of RDB file */
529 int rdb_compression; /* Use compression in RDB? */
39d1e350 530 int rdb_checksum; /* Use RDB checksum? */
c25e7eaf 531 time_t lastsave; /* Unix time of last save succeeede */
6b4d92e2 532 time_t rdb_save_time_last; /* Time used by last RDB save run. */
533 time_t rdb_save_time_start; /* Current RDB save start time. */
c25e7eaf 534 int lastbgsave_status; /* REDIS_OK or REDIS_ERR */
4d3bbf35 535 int stop_writes_on_bgsave_err; /* Don't allow writes if can't BGSAVE */
eeb34eff 536 /* Propagation of commands in AOF / replication */
78d6a22d 537 redisOpArray also_propagate; /* Additional command to propagate. */
36c17a53 538 /* Logging */
c6ac7d03 539 char *logfile; /* Path of log file */
540 int syslog_enabled; /* Is syslog enabled? */
541 char *syslog_ident; /* Syslog ident */
542 int syslog_facility; /* Syslog facility */
f4aa600b 543 /* Slave specific fields */
c6ac7d03 544 char *masterauth; /* AUTH with this password with master */
545 char *masterhost; /* Hostname of master */
546 int masterport; /* Port of master */
0671d88c 547 int repl_ping_slave_period; /* Master pings the slave every N seconds */
c6ac7d03 548 int repl_timeout; /* Timeout after N seconds of master idle */
549 redisClient *master; /* Client that is master for this slave */
550 int repl_syncio_timeout; /* Timeout for synchronous I/O calls */
1844f990 551 int repl_state; /* Replication status if the instance is a slave */
13732168 552 off_t repl_transfer_size; /* Size of RDB to read from master during sync. */
553 off_t repl_transfer_read; /* Amount of RDB read from master during sync. */
554 off_t repl_transfer_last_fsync_off; /* Offset when we fsync-ed last time. */
c6ac7d03 555 int repl_transfer_s; /* Slave -> Master SYNC socket */
556 int repl_transfer_fd; /* Slave -> Master SYNC temp file descriptor */
557 char *repl_transfer_tmpfile; /* Slave-> master SYNC temp file name */
558 time_t repl_transfer_lastio; /* Unix time of the latest read, for timeout */
4ebfc455 559 int repl_serve_stale_data; /* Serve stale data when link is down? */
05406168 560 int repl_slave_ro; /* Slave is read only? */
c6ac7d03 561 time_t repl_down_since; /* Unix time at which link with master went down */
48d26a48 562 int slave_priority; /* Reported in INFO and used by Sentinel. */
f4aa600b 563 /* Limits */
c6ac7d03 564 unsigned int maxclients; /* Max number of simultaneous clients */
565 unsigned long long maxmemory; /* Max number of memory bytes to use */
566 int maxmemory_policy; /* Policy for key evition */
567 int maxmemory_samples; /* Pricision of random sampling */
f4aa600b 568 /* Blocked clients */
c6ac7d03 569 unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
cea8c5cd 570 list *unblocked_clients; /* list of clients to unblock before next loop */
e2641e09 571 /* Sort parameters - qsort_r() is only available under BSD so we
572 * have to take this state global, in order to pass it to sortCompare() */
573 int sort_desc;
574 int sort_alpha;
575 int sort_bypattern;
c6ac7d03 576 /* Zip structure config, see redis.conf for more information */
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577 size_t hash_max_ziplist_entries;
578 size_t hash_max_ziplist_value;
e2641e09 579 size_t list_max_ziplist_entries;
580 size_t list_max_ziplist_value;
96ffb2fe 581 size_t set_max_intset_entries;
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582 size_t zset_max_ziplist_entries;
583 size_t zset_max_ziplist_value;
c6ac7d03 584 time_t unixtime; /* Unix time sampled every second. */
e2641e09 585 /* Pubsub */
c6ac7d03 586 dict *pubsub_channels; /* Map channels to list of subscribed clients */
587 list *pubsub_patterns; /* A list of pubsub_patterns */
7585836e 588 /* Scripting */
4dd444bb 589 lua_State *lua; /* The Lua interpreter. We use just one for all clients */
c6ac7d03 590 redisClient *lua_client; /* The "fake client" to query Redis from Lua */
591 redisClient *lua_caller; /* The client running EVAL right now, or NULL */
592 dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
593 long long lua_time_limit; /* Script timeout in seconds */
594 long long lua_time_start; /* Start time of script */
4ab8695d 595 int lua_write_dirty; /* True if a write command was called during the
596 execution of the current script. */
9f772cc2 597 int lua_random_dirty; /* True if a random command was called during the
4ab8695d 598 execution of the current script. */
115e3ff3 599 int lua_timedout; /* True if we reached the time limit for script
600 execution. */
4ab8695d 601 int lua_kill; /* Kill the script if true. */
fa5af017 602 /* Assert & bug reportign */
603 char *assert_failed;
604 char *assert_file;
605 int assert_line;
c6ac7d03 606 int bug_report_start; /* True if bug report header was already logged. */
fc030ac7 607 int watchdog_period; /* Software watchdog period in ms. 0 = off */
e2641e09 608};
609
610typedef struct pubsubPattern {
611 redisClient *client;
612 robj *pattern;
613} pubsubPattern;
614
615typedef void redisCommandProc(redisClient *c);
9791f0f8 616typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
e2641e09 617struct redisCommand {
618 char *name;
619 redisCommandProc *proc;
620 int arity;
5d02b00f 621 char *sflags; /* Flags as string represenation, one char per flag. */
622 int flags; /* The actual flags, obtained from the 'sflags' field. */
571e257d 623 /* Use a function to determine keys arguments in a command line. */
9791f0f8 624 redisGetKeysProc *getkeys_proc;
e2641e09 625 /* What keys should be loaded in background when calling this command? */
9791f0f8 626 int firstkey; /* The first argument that's a key (0 = no keys) */
627 int lastkey; /* THe last argument that's a key */
628 int keystep; /* The step between first and last key */
0d808ef2 629 long long microseconds, calls;
e2641e09 630};
631
632struct redisFunctionSym {
633 char *name;
634 unsigned long pointer;
635};
636
637typedef struct _redisSortObject {
638 robj *obj;
639 union {
640 double score;
641 robj *cmpobj;
642 } u;
643} redisSortObject;
644
645typedef struct _redisSortOperation {
646 int type;
647 robj *pattern;
648} redisSortOperation;
649
e2641e09 650/* Structure to hold list iteration abstraction. */
651typedef struct {
652 robj *subject;
653 unsigned char encoding;
654 unsigned char direction; /* Iteration direction */
655 unsigned char *zi;
656 listNode *ln;
657} listTypeIterator;
658
659/* Structure for an entry while iterating over a list. */
660typedef struct {
661 listTypeIterator *li;
662 unsigned char *zi; /* Entry in ziplist */
663 listNode *ln; /* Entry in linked list */
664} listTypeEntry;
665
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666/* Structure to hold set iteration abstraction. */
667typedef struct {
668 robj *subject;
669 int encoding;
670 int ii; /* intset iterator */
671 dictIterator *di;
cb72d0f1 672} setTypeIterator;
96ffb2fe 673
e2641e09 674/* Structure to hold hash iteration abstration. Note that iteration over
675 * hashes involves both fields and values. Because it is possible that
676 * not both are required, store pointers in the iterator to avoid
677 * unnecessary memory allocation for fields/values. */
678typedef struct {
ebd85e9a 679 robj *subject;
e2641e09 680 int encoding;
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681
682 unsigned char *fptr, *vptr;
e2641e09 683
684 dictIterator *di;
685 dictEntry *de;
686} hashTypeIterator;
687
688#define REDIS_HASH_KEY 1
689#define REDIS_HASH_VALUE 2
690
691/*-----------------------------------------------------------------------------
692 * Extern declarations
693 *----------------------------------------------------------------------------*/
694
695extern struct redisServer server;
696extern struct sharedObjectsStruct shared;
697extern dictType setDictType;
698extern dictType zsetDictType;
4dd444bb 699extern dictType dbDictType;
e2641e09 700extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
38d6976c 701extern dictType hashDictType;
e2641e09 702
703/*-----------------------------------------------------------------------------
704 * Functions prototypes
705 *----------------------------------------------------------------------------*/
706
419e1cca 707/* Utils */
708long long ustime(void);
2c2b2085 709long long mstime(void);
44f508f1 710void getRandomHexChars(char *p, unsigned int len);
bb99f425 711uint64_t crc64(uint64_t crc, const unsigned char *s, uint64_t l);
55951f90 712void exitFromChild(int retcode);
419e1cca 713
e2641e09 714/* networking.c -- Networking and Client related operations */
715redisClient *createClient(int fd);
716void closeTimedoutClients(void);
717void freeClient(redisClient *c);
718void resetClient(redisClient *c);
719void sendReplyToClient(aeEventLoop *el, int fd, void *privdata, int mask);
e2641e09 720void addReply(redisClient *c, robj *obj);
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721void *addDeferredMultiBulkLength(redisClient *c);
722void setDeferredMultiBulkLength(redisClient *c, void *node, long length);
e2641e09 723void addReplySds(redisClient *c, sds s);
724void processInputBuffer(redisClient *c);
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725void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
726void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
e2641e09 727void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
728void addReplyBulk(redisClient *c, robj *obj);
729void addReplyBulkCString(redisClient *c, char *s);
d51ebef5 730void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
731void addReplyBulkLongLong(redisClient *c, long long ll);
e2641e09 732void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
733void addReply(redisClient *c, robj *obj);
734void addReplySds(redisClient *c, sds s);
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735void addReplyError(redisClient *c, char *err);
736void addReplyStatus(redisClient *c, char *status);
e2641e09 737void addReplyDouble(redisClient *c, double d);
738void addReplyLongLong(redisClient *c, long long ll);
0537e7bf 739void addReplyMultiBulkLen(redisClient *c, long length);
1824e3a3 740void copyClientOutputBuffer(redisClient *dst, redisClient *src);
e2641e09 741void *dupClientReplyValue(void *o);
7a1fd61e 742void getClientsMaxBuffers(unsigned long *longest_output_list,
743 unsigned long *biggest_input_buffer);
becf5fdb 744sds getClientInfoString(redisClient *client);
45e7a1ce 745sds getAllClientsInfoString(void);
c1c9d551 746void rewriteClientCommandVector(redisClient *c, int argc, ...);
4dd444bb 747void rewriteClientCommandArgument(redisClient *c, int i, robj *newval);
3853c168 748unsigned long getClientOutputBufferMemoryUsage(redisClient *c);
7eac2a75 749void freeClientsInAsyncFreeQueue(void);
06b3dced 750void asyncCloseClientOnOutputBufferLimitReached(redisClient *c);
7fe8d49a 751int getClientLimitClassByName(char *name);
752char *getClientLimitClassName(int class);
8b7c3455 753void flushSlavesOutputBuffers(void);
ed4d4f11 754void disconnectSlaves(void);
e2641e09 755
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756#ifdef __GNUC__
757void addReplyErrorFormat(redisClient *c, const char *fmt, ...)
758 __attribute__((format(printf, 2, 3)));
759void addReplyStatusFormat(redisClient *c, const char *fmt, ...)
760 __attribute__((format(printf, 2, 3)));
761#else
762void addReplyErrorFormat(redisClient *c, const char *fmt, ...);
763void addReplyStatusFormat(redisClient *c, const char *fmt, ...);
764#endif
765
e2641e09 766/* List data type */
767void listTypeTryConversion(robj *subject, robj *value);
768void listTypePush(robj *subject, robj *value, int where);
769robj *listTypePop(robj *subject, int where);
770unsigned long listTypeLength(robj *subject);
3c08fdae 771listTypeIterator *listTypeInitIterator(robj *subject, long index, unsigned char direction);
e2641e09 772void listTypeReleaseIterator(listTypeIterator *li);
773int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
774robj *listTypeGet(listTypeEntry *entry);
775void listTypeInsert(listTypeEntry *entry, robj *value, int where);
776int listTypeEqual(listTypeEntry *entry, robj *o);
777void listTypeDelete(listTypeEntry *entry);
778void listTypeConvert(robj *subject, int enc);
779void unblockClientWaitingData(redisClient *c);
780int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
781void popGenericCommand(redisClient *c, int where);
782
783/* MULTI/EXEC/WATCH... */
784void unwatchAllKeys(redisClient *c);
785void initClientMultiState(redisClient *c);
786void freeClientMultiState(redisClient *c);
09e2d9ee 787void queueMultiCommand(redisClient *c);
e2641e09 788void touchWatchedKey(redisDb *db, robj *key);
789void touchWatchedKeysOnFlush(int dbid);
05406168 790void discardTransaction(redisClient *c);
e2641e09 791
792/* Redis object implementation */
793void decrRefCount(void *o);
794void incrRefCount(robj *o);
4dd444bb 795robj *resetRefCount(robj *obj);
e2641e09 796void freeStringObject(robj *o);
797void freeListObject(robj *o);
798void freeSetObject(robj *o);
799void freeZsetObject(robj *o);
800void freeHashObject(robj *o);
801robj *createObject(int type, void *ptr);
802robj *createStringObject(char *ptr, size_t len);
803robj *dupStringObject(robj *o);
5d081931 804int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
e2641e09 805robj *tryObjectEncoding(robj *o);
806robj *getDecodedObject(robj *o);
807size_t stringObjectLen(robj *o);
e2641e09 808robj *createStringObjectFromLongLong(long long value);
5574b53e 809robj *createStringObjectFromLongDouble(long double value);
e2641e09 810robj *createListObject(void);
811robj *createZiplistObject(void);
812robj *createSetObject(void);
96ffb2fe 813robj *createIntsetObject(void);
e2641e09 814robj *createHashObject(void);
815robj *createZsetObject(void);
9e7cee0e 816robj *createZsetZiplistObject(void);
e2641e09 817int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *msg);
818int checkType(redisClient *c, robj *o, int type);
819int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, const char *msg);
820int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const char *msg);
821int getLongLongFromObject(robj *o, long long *target);
5574b53e 822int getLongDoubleFromObject(robj *o, long double *target);
823int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg);
e2641e09 824char *strEncoding(int encoding);
825int compareStringObjects(robj *a, robj *b);
826int equalStringObjects(robj *a, robj *b);
ef59a8bc 827unsigned long estimateObjectIdleTime(robj *o);
e2641e09 828
19e61097 829/* Synchronous I/O with timeout */
4ccf671c 830ssize_t syncWrite(int fd, char *ptr, ssize_t size, long long timeout);
831ssize_t syncRead(int fd, char *ptr, ssize_t size, long long timeout);
832ssize_t syncReadLine(int fd, char *ptr, ssize_t size, long long timeout);
19e61097 833
e2641e09 834/* Replication */
835void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
e31b615e 836void replicationFeedMonitors(redisClient *c, list *monitors, int dictid, robj **argv, int argc);
e2641e09 837void updateSlavesWaitingBgsave(int bgsaveerr);
f4aa600b 838void replicationCron(void);
e2641e09 839
97e7f8ae 840/* Generic persistence functions */
841void startLoading(FILE *fp);
842void loadingProgress(off_t pos);
843void stopLoading(void);
844
e2641e09 845/* RDB persistence */
2e4b0e77 846#include "rdb.h"
e2641e09 847
848/* AOF persistence */
a3fcd6bc 849void flushAppendOnlyFile(int force);
e2641e09 850void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
851void aofRemoveTempFile(pid_t childpid);
852int rewriteAppendOnlyFileBackground(void);
853int loadAppendOnlyFile(char *filename);
854void stopAppendOnly(void);
855int startAppendOnly(void);
36c17a53 856void backgroundRewriteDoneHandler(int exitcode, int bysignal);
edb95253 857void aofRewriteBufferReset(void);
858unsigned long aofRewriteBufferSize(void);
e2641e09 859
860/* Sorted sets data type */
c772d9c6 861
862/* Struct to hold a inclusive/exclusive range spec. */
863typedef struct {
864 double min, max;
865 int minex, maxex; /* are min or max exclusive? */
866} zrangespec;
867
e2641e09 868zskiplist *zslCreate(void);
869void zslFree(zskiplist *zsl);
69ef89f2 870zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
8588bfa3 871unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score);
c772d9c6 872int zslDelete(zskiplist *zsl, double score, robj *obj);
873zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec range);
dddf5335
PN
874double zzlGetScore(unsigned char *sptr);
875void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
876void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
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PN
877unsigned int zsetLength(robj *zobj);
878void zsetConvert(robj *zobj, int encoding);
e2641e09 879
880/* Core functions */
f6b32c14 881int freeMemoryIfNeeded(void);
e2641e09 882int processCommand(redisClient *c);
633a9410 883void setupSignalHandlers(void);
1b1f47c9 884struct redisCommand *lookupCommand(sds name);
885struct redisCommand *lookupCommandByCString(char *s);
ce8b772b 886void call(redisClient *c, int flags);
d8b1228b 887void propagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int flags);
eeb34eff 888void alsoPropagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int target);
e2641e09 889int prepareForShutdown();
890void redisLog(int level, const char *fmt, ...);
288f811f 891void redisLogRaw(int level, const char *msg);
be4f8ccc 892void redisLogFromHandler(int level, const char *msg);
e2641e09 893void usage();
894void updateDictResizePolicy(void);
895int htNeedsResize(dict *dict);
896void oom(const char *msg);
1b1f47c9 897void populateCommandTable(void);
d7ed7fd2 898void resetCommandTableStats(void);
e2641e09 899
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PN
900/* Set data type */
901robj *setTypeCreate(robj *value);
902int setTypeAdd(robj *subject, robj *value);
903int setTypeRemove(robj *subject, robj *value);
904int setTypeIsMember(robj *subject, robj *value);
cb72d0f1
PN
905setTypeIterator *setTypeInitIterator(robj *subject);
906void setTypeReleaseIterator(setTypeIterator *si);
1b508da7 907int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele);
908robj *setTypeNextObject(setTypeIterator *si);
dd48de74 909int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele);
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PN
910unsigned long setTypeSize(robj *subject);
911void setTypeConvert(robj *subject, int enc);
912
e2641e09 913/* Hash data type */
ebd85e9a 914void hashTypeConvert(robj *o, int enc);
e2641e09 915void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
916void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2);
3d24304f 917robj *hashTypeGetObject(robj *o, robj *key);
e2641e09 918int hashTypeExists(robj *o, robj *key);
919int hashTypeSet(robj *o, robj *key, robj *value);
920int hashTypeDelete(robj *o, robj *key);
921unsigned long hashTypeLength(robj *o);
922hashTypeIterator *hashTypeInitIterator(robj *subject);
923void hashTypeReleaseIterator(hashTypeIterator *hi);
924int hashTypeNext(hashTypeIterator *hi);
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PN
925void hashTypeCurrentFromZiplist(hashTypeIterator *hi, int what,
926 unsigned char **vstr,
927 unsigned int *vlen,
928 long long *vll);
929void hashTypeCurrentFromHashTable(hashTypeIterator *hi, int what, robj **dst);
8c304be3 930robj *hashTypeCurrentObject(hashTypeIterator *hi, int what);
e2641e09 931robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
932
933/* Pub / Sub */
934int pubsubUnsubscribeAllChannels(redisClient *c, int notify);
935int pubsubUnsubscribeAllPatterns(redisClient *c, int notify);
936void freePubsubPattern(void *p);
937int listMatchPubsubPattern(void *a, void *b);
d38ef520 938int pubsubPublishMessage(robj *channel, robj *message);
e2641e09 939
e2641e09 940/* Configuration */
67c6f0f6 941void loadServerConfig(char *filename, char *options);
e2641e09 942void appendServerSaveParams(time_t seconds, int changes);
943void resetServerSaveParams();
944
945/* db.c -- Keyspace access API */
946int removeExpire(redisDb *db, robj *key);
bcf2995c 947void propagateExpire(redisDb *db, robj *key);
e2641e09 948int expireIfNeeded(redisDb *db, robj *key);
7dcc10b6 949long long getExpire(redisDb *db, robj *key);
950void setExpire(redisDb *db, robj *key, long long when);
e2641e09 951robj *lookupKey(redisDb *db, robj *key);
952robj *lookupKeyRead(redisDb *db, robj *key);
953robj *lookupKeyWrite(redisDb *db, robj *key);
954robj *lookupKeyReadOrReply(redisClient *c, robj *key, robj *reply);
955robj *lookupKeyWriteOrReply(redisClient *c, robj *key, robj *reply);
f85cd526 956void dbAdd(redisDb *db, robj *key, robj *val);
957void dbOverwrite(redisDb *db, robj *key, robj *val);
958void setKey(redisDb *db, robj *key, robj *val);
e2641e09 959int dbExists(redisDb *db, robj *key);
960robj *dbRandomKey(redisDb *db);
961int dbDelete(redisDb *db, robj *key);
962long long emptyDb();
963int selectDb(redisClient *c, int id);
cea8c5cd 964void signalModifiedKey(redisDb *db, robj *key);
965void signalFlushedDb(int dbid);
484354ff 966unsigned int GetKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
e2641e09 967
9791f0f8 968/* API to get key arguments from commands */
969#define REDIS_GETKEYS_ALL 0
970#define REDIS_GETKEYS_PRELOAD 1
971int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys, int flags);
972void getKeysFreeResult(int *result);
973int *noPreloadGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
974int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
975int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
976
7585836e 977/* Scripting */
978void scriptingInit(void);
979
e2641e09 980/* Git SHA1 */
981char *redisGitSHA1(void);
982char *redisGitDirty(void);
983
984/* Commands prototypes */
985void authCommand(redisClient *c);
986void pingCommand(redisClient *c);
987void echoCommand(redisClient *c);
988void setCommand(redisClient *c);
989void setnxCommand(redisClient *c);
990void setexCommand(redisClient *c);
12d293ca 991void psetexCommand(redisClient *c);
e2641e09 992void getCommand(redisClient *c);
993void delCommand(redisClient *c);
994void existsCommand(redisClient *c);
3c1bf495
PN
995void setbitCommand(redisClient *c);
996void getbitCommand(redisClient *c);
9f9e1cea 997void setrangeCommand(redisClient *c);
ef11bccc 998void getrangeCommand(redisClient *c);
e2641e09 999void incrCommand(redisClient *c);
1000void decrCommand(redisClient *c);
1001void incrbyCommand(redisClient *c);
1002void decrbyCommand(redisClient *c);
5574b53e 1003void incrbyfloatCommand(redisClient *c);
e2641e09 1004void selectCommand(redisClient *c);
1005void randomkeyCommand(redisClient *c);
1006void keysCommand(redisClient *c);
1007void dbsizeCommand(redisClient *c);
1008void lastsaveCommand(redisClient *c);
1009void saveCommand(redisClient *c);
1010void bgsaveCommand(redisClient *c);
1011void bgrewriteaofCommand(redisClient *c);
1012void shutdownCommand(redisClient *c);
1013void moveCommand(redisClient *c);
1014void renameCommand(redisClient *c);
1015void renamenxCommand(redisClient *c);
1016void lpushCommand(redisClient *c);
1017void rpushCommand(redisClient *c);
1018void lpushxCommand(redisClient *c);
1019void rpushxCommand(redisClient *c);
1020void linsertCommand(redisClient *c);
1021void lpopCommand(redisClient *c);
1022void rpopCommand(redisClient *c);
1023void llenCommand(redisClient *c);
1024void lindexCommand(redisClient *c);
1025void lrangeCommand(redisClient *c);
1026void ltrimCommand(redisClient *c);
1027void typeCommand(redisClient *c);
1028void lsetCommand(redisClient *c);
1029void saddCommand(redisClient *c);
1030void sremCommand(redisClient *c);
1031void smoveCommand(redisClient *c);
1032void sismemberCommand(redisClient *c);
1033void scardCommand(redisClient *c);
1034void spopCommand(redisClient *c);
1035void srandmemberCommand(redisClient *c);
1036void sinterCommand(redisClient *c);
1037void sinterstoreCommand(redisClient *c);
1038void sunionCommand(redisClient *c);
1039void sunionstoreCommand(redisClient *c);
1040void sdiffCommand(redisClient *c);
1041void sdiffstoreCommand(redisClient *c);
1042void syncCommand(redisClient *c);
1043void flushdbCommand(redisClient *c);
1044void flushallCommand(redisClient *c);
1045void sortCommand(redisClient *c);
1046void lremCommand(redisClient *c);
8a979f03 1047void rpoplpushCommand(redisClient *c);
e2641e09 1048void infoCommand(redisClient *c);
1049void mgetCommand(redisClient *c);
1050void monitorCommand(redisClient *c);
1051void expireCommand(redisClient *c);
1052void expireatCommand(redisClient *c);
12d293ca 1053void pexpireCommand(redisClient *c);
1054void pexpireatCommand(redisClient *c);
e2641e09 1055void getsetCommand(redisClient *c);
1056void ttlCommand(redisClient *c);
12d293ca 1057void pttlCommand(redisClient *c);
a539d29a 1058void persistCommand(redisClient *c);
e2641e09 1059void slaveofCommand(redisClient *c);
1060void debugCommand(redisClient *c);
1061void msetCommand(redisClient *c);
1062void msetnxCommand(redisClient *c);
1063void zaddCommand(redisClient *c);
1064void zincrbyCommand(redisClient *c);
1065void zrangeCommand(redisClient *c);
1066void zrangebyscoreCommand(redisClient *c);
25bb8a44 1067void zrevrangebyscoreCommand(redisClient *c);
e2641e09 1068void zcountCommand(redisClient *c);
1069void zrevrangeCommand(redisClient *c);
1070void zcardCommand(redisClient *c);
1071void zremCommand(redisClient *c);
1072void zscoreCommand(redisClient *c);
1073void zremrangebyscoreCommand(redisClient *c);
1074void multiCommand(redisClient *c);
1075void execCommand(redisClient *c);
1076void discardCommand(redisClient *c);
1077void blpopCommand(redisClient *c);
1078void brpopCommand(redisClient *c);
b2a7fd0c 1079void brpoplpushCommand(redisClient *c);
e2641e09 1080void appendCommand(redisClient *c);
80091bba 1081void strlenCommand(redisClient *c);
e2641e09 1082void zrankCommand(redisClient *c);
1083void zrevrankCommand(redisClient *c);
1084void hsetCommand(redisClient *c);
1085void hsetnxCommand(redisClient *c);
1086void hgetCommand(redisClient *c);
1087void hmsetCommand(redisClient *c);
1088void hmgetCommand(redisClient *c);
1089void hdelCommand(redisClient *c);
1090void hlenCommand(redisClient *c);
1091void zremrangebyrankCommand(redisClient *c);
1092void zunionstoreCommand(redisClient *c);
1093void zinterstoreCommand(redisClient *c);
1094void hkeysCommand(redisClient *c);
1095void hvalsCommand(redisClient *c);
1096void hgetallCommand(redisClient *c);
1097void hexistsCommand(redisClient *c);
1098void configCommand(redisClient *c);
1099void hincrbyCommand(redisClient *c);
68bfe993 1100void hincrbyfloatCommand(redisClient *c);
e2641e09 1101void subscribeCommand(redisClient *c);
1102void unsubscribeCommand(redisClient *c);
1103void psubscribeCommand(redisClient *c);
1104void punsubscribeCommand(redisClient *c);
1105void publishCommand(redisClient *c);
1106void watchCommand(redisClient *c);
1107void unwatchCommand(redisClient *c);
ecc91094 1108void restoreCommand(redisClient *c);
1109void migrateCommand(redisClient *c);
626f6b2d 1110void dumpCommand(redisClient *c);
ece74202 1111void objectCommand(redisClient *c);
3cd12b56 1112void clientCommand(redisClient *c);
7585836e 1113void evalCommand(redisClient *c);
7229d60d 1114void evalShaCommand(redisClient *c);
070e3945 1115void scriptCommand(redisClient *c);
9494f1f1 1116void timeCommand(redisClient *c);
4a789dec 1117void bitopCommand(redisClient *c);
1118void bitcountCommand(redisClient *c);
dbd8c753 1119void replconfCommand(redisClient *c);
e2641e09 1120
b3aa6d71 1121#if defined(__GNUC__)
b3aa6d71 1122void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
1123void free(void *ptr) __attribute__ ((deprecated));
1124void *malloc(size_t size) __attribute__ ((deprecated));
1125void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
1126#endif
1127
e3e69935 1128/* Debugging stuff */
bab205f7 1129void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int line);
e3e69935 1130void _redisAssert(char *estr, char *file, int line);
1131void _redisPanic(char *msg, char *file, int line);
fa5af017 1132void bugReportStart(void);
00010fa9 1133void redisLogObjectDebugInfo(robj *o);
d4d20859 1134void sigsegvHandler(int sig, siginfo_t *info, void *secret);
1135sds genRedisInfoString(char *section);
fc030ac7 1136void enableWatchdog(int period);
1137void disableWatchdog(void);
1138void watchdogScheduleSignal(int period);
0b8441c1 1139void redisLogHexDump(int level, char *descr, void *value, size_t len);
e2641e09 1140#endif