X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/1844f9900f131a538d1cee988d76ef689c8426fe..f333788fbcaf67fa97c509f0f61d557b6669b1fe:/src/redis.h diff --git a/src/redis.h b/src/redis.h index aa79b4ad..8ac84247 100644 --- a/src/redis.h +++ b/src/redis.h @@ -20,6 +20,7 @@ #include #include #include +#include #include "ae.h" /* Event driven programming library */ #include "sds.h" /* Dynamic safe strings */ @@ -27,7 +28,6 @@ #include "adlist.h" /* Linked lists */ #include "zmalloc.h" /* total memory usage aware version of malloc/free */ #include "anet.h" /* Networking the easy way */ -#include "zipmap.h" /* Compact string -> string data structure */ #include "ziplist.h" /* Compact list data structure */ #include "intset.h" /* Compact integer set structure */ #include "version.h" /* Version macro */ @@ -40,28 +40,34 @@ /* Static server configuration */ #define REDIS_SERVERPORT 6379 /* TCP port */ #define REDIS_MAXIDLETIME 0 /* default client timeout: infinite */ -#define REDIS_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */ -#define REDIS_IOBUF_LEN (1024*16) -#define REDIS_LOADBUF_LEN 1024 #define REDIS_DEFAULT_DBNUM 16 #define REDIS_CONFIGLINE_MAX 1024 -#define REDIS_MAX_SYNC_TIME 60 /* Slave can't take more to sync */ #define REDIS_EXPIRELOOKUPS_PER_CRON 10 /* lookup 10 expires per loop */ +#define REDIS_EXPIRELOOKUPS_TIME_LIMIT 25 /* Time limit in milliseconds */ #define REDIS_MAX_WRITE_PER_EVENT (1024*64) -#define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */ +#define REDIS_SHARED_SELECT_CMDS 10 #define REDIS_SHARED_INTEGERS 10000 -#define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */ +#define REDIS_SHARED_BULKHDR_LEN 32 #define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */ #define REDIS_AOF_REWRITE_PERC 100 #define REDIS_AOF_REWRITE_MIN_SIZE (1024*1024) #define REDIS_AOF_REWRITE_ITEMS_PER_CMD 64 #define REDIS_SLOWLOG_LOG_SLOWER_THAN 10000 -#define REDIS_SLOWLOG_MAX_LEN 64 +#define REDIS_SLOWLOG_MAX_LEN 128 #define REDIS_MAX_CLIENTS 10000 #define REDIS_REPL_TIMEOUT 60 #define REDIS_REPL_PING_SLAVE_PERIOD 10 -#define REDIS_MBULK_BIG_ARG (1024*32) + +#define REDIS_RUN_ID_SIZE 40 +#define REDIS_OPS_SEC_SAMPLES 16 + +/* Protocol and I/O related defines */ +#define REDIS_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */ +#define REDIS_IOBUF_LEN (1024*16) /* Generic I/O buffer size */ +#define REDIS_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */ +#define REDIS_INLINE_MAX_SIZE (1024*64) /* Max size of inline reads */ +#define REDIS_MBULK_BIG_ARG (1024*32) /* Hash table parameters */ #define REDIS_HT_MINFILL 10 /* Minimal hash table fill 10% */ @@ -76,6 +82,7 @@ #define REDIS_CMD_PUBSUB 32 /* "p" flag */ #define REDIS_CMD_NOSCRIPT 64 /* "s" flag */ #define REDIS_CMD_RANDOM 128 /* "R" flag */ +#define REDIS_CMD_SORT_FOR_SCRIPT 256 /* "S" flag */ /* Object types */ #define REDIS_STRING 0 @@ -83,7 +90,6 @@ #define REDIS_SET 2 #define REDIS_ZSET 3 #define REDIS_HASH 4 -#define REDIS_VMPOINTER 8 /* Objects encoding. Some kind of objects like Strings and Hashes can be * internally represented in multiple ways. The 'encoding' field of the object @@ -141,11 +147,19 @@ server.unblocked_clients */ #define REDIS_LUA_CLIENT 512 /* This is a non connected client used by Lua */ #define REDIS_ASKING 1024 /* Client issued the ASKING command */ +#define REDIS_CLOSE_ASAP 2048 /* Close this client ASAP */ /* Client request types */ #define REDIS_REQ_INLINE 1 #define REDIS_REQ_MULTIBULK 2 +/* Client classes for client limits, currently used only for + * the max-client-output-buffer limit implementation. */ +#define REDIS_CLIENT_LIMIT_CLASS_NORMAL 0 +#define REDIS_CLIENT_LIMIT_CLASS_SLAVE 1 +#define REDIS_CLIENT_LIMIT_CLASS_PUBSUB 2 +#define REDIS_CLIENT_LIMIT_NUM_CLASSES 3 + /* Slave replication state - slave side */ #define REDIS_REPL_NONE 0 /* No active replication */ #define REDIS_REPL_CONNECT 1 /* Must connect to master */ @@ -194,8 +208,8 @@ #define AOF_FSYNC_EVERYSEC 2 /* Zip structure related defaults */ -#define REDIS_HASH_MAX_ZIPMAP_ENTRIES 512 -#define REDIS_HASH_MAX_ZIPMAP_VALUE 64 +#define REDIS_HASH_MAX_ZIPLIST_ENTRIES 512 +#define REDIS_HASH_MAX_ZIPLIST_VALUE 64 #define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512 #define REDIS_LIST_MAX_ZIPLIST_VALUE 64 #define REDIS_SET_MAX_INTSET_ENTRIES 512 @@ -227,6 +241,18 @@ points are configured. */ #define REDIS_SHUTDOWN_NOSAVE 2 /* Don't SAVE on SHUTDOWN. */ +/* Command call flags, see call() function */ +#define REDIS_CALL_NONE 0 +#define REDIS_CALL_SLOWLOG 1 +#define REDIS_CALL_STATS 2 +#define REDIS_CALL_PROPAGATE 4 +#define REDIS_CALL_FULL (REDIS_CALL_SLOWLOG | REDIS_CALL_STATS | REDIS_CALL_PROPAGATE) + +/* Command propagation flags, see propagate() function */ +#define REDIS_PROPAGATE_NONE 0 +#define REDIS_PROPAGATE_AOF 1 +#define REDIS_PROPAGATE_REPL 2 + /* We can print the stacktrace, so our assert is defined this way: */ #define redisAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_redisAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1))) #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1))) @@ -298,6 +324,7 @@ typedef struct redisClient { redisDb *db; int dictid; sds querybuf; + size_t querybuf_peak; /* Recent (100ms or more) peak of querybuf size */ int argc; robj **argv; struct redisCommand *cmd, *lastcmd; @@ -305,8 +332,11 @@ typedef struct redisClient { int multibulklen; /* number of multi bulk arguments left to read */ long bulklen; /* length of bulk argument in multi bulk request */ list *reply; + unsigned long reply_bytes; /* Tot bytes of objects in reply list */ int sentlen; + time_t ctime; /* Client creation time */ time_t lastinteraction; /* time of the last interaction, used for timeout */ + time_t obuf_soft_limit_reached_time; int flags; /* REDIS_SLAVE | REDIS_MONITOR | REDIS_MULTI ... */ int slaveseldb; /* slave selected db, if this client is a slave */ int authenticated; /* when requirepass is non-NULL */ @@ -336,12 +366,14 @@ struct sharedObjectsStruct { robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space, *colon, *nullbulk, *nullmultibulk, *queued, *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr, - *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *plus, - *select0, *select1, *select2, *select3, *select4, - *select5, *select6, *select7, *select8, *select9, - *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3, - *mbulk4, *psubscribebulk, *punsubscribebulk, - *integers[REDIS_SHARED_INTEGERS]; + *outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *bgsaveerr, + *masterdownerr, *roslaveerr, + *oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk, + *unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *rpop, *lpop, + *select[REDIS_SHARED_SELECT_CMDS], + *integers[REDIS_SHARED_INTEGERS], + *mbulkhdr[REDIS_SHARED_BULKHDR_LEN], /* "*\r\n" */ + *bulkhdr[REDIS_SHARED_BULKHDR_LEN]; /* "$\r\n" */ }; /* ZSETs use a specialized version of Skiplists */ @@ -366,6 +398,36 @@ typedef struct zset { zskiplist *zsl; } zset; +typedef struct clientBufferLimitsConfig { + unsigned long long hard_limit_bytes; + unsigned long long soft_limit_bytes; + time_t soft_limit_seconds; +} clientBufferLimitsConfig; + +/* The redisOp structure defines a Redis Operation, that is an instance of + * a command with an argument vector, database ID, propagation target + * (REDIS_PROPAGATE_*), and command pointer. + * + * Currently only used to additionally propagate more commands to AOF/Replication + * after the propagation of the executed command. */ +typedef struct redisOp { + robj **argv; + int argc, dbid, target; + struct redisCommand *cmd; +} redisOp; + +/* Defines an array of Redis operations. There is an API to add to this + * structure in a easy way. + * + * redisOpArrayInit(); + * redisOpArrayAppend(); + * redisOpArrayFree(); + */ +typedef struct redisOpArray { + redisOp *ops; + int numops; +} redisOpArray; + /*----------------------------------------------------------------------------- * Redis cluster data structures *----------------------------------------------------------------------------*/ @@ -509,6 +571,9 @@ struct redisServer { int activerehashing; /* Incremental rehash in serverCron() */ char *requirepass; /* Pass for AUTH command, or NULL */ char *pidfile; /* PID file path */ + int arch_bits; /* 32 or 64 depending on sizeof(long) */ + int cronloops; /* Number of times the cron function run */ + char runid[REDIS_RUN_ID_SIZE+1]; /* ID always different at every exec. */ /* Networking */ int port; /* TCP listening port */ char *bindaddr; /* Bind address or NULL */ @@ -518,7 +583,9 @@ struct redisServer { int sofd; /* Unix socket file descriptor */ int cfd; /* Cluster bus lisetning socket */ list *clients; /* List of active clients */ + list *clients_to_close; /* Clients to close asynchronously */ list *slaves, *monitors; /* List of slaves and MONITORs */ + redisClient *current_client; /* Current client, only used on crash report */ char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */ /* RDB / AOF loading information */ int loading; /* We are loading data from disk if true */ @@ -526,9 +593,7 @@ struct redisServer { off_t loading_loaded_bytes; time_t loading_start_time; /* Fast pointers to often looked up command */ - struct redisCommand *delCommand, *multiCommand; - int cronloops; /* Number of times the cron function run */ - time_t lastsave; /* Unix time of last save succeeede */ + struct redisCommand *delCommand, *multiCommand, *lpushCommand; /* Fields used only for stats */ time_t stat_starttime; /* Server start time */ long long stat_numcommands; /* Number of processed commands */ @@ -544,12 +609,19 @@ struct redisServer { long long slowlog_entry_id; /* SLOWLOG current entry ID */ long long slowlog_log_slower_than; /* SLOWLOG time limit (to get logged) */ unsigned long slowlog_max_len; /* SLOWLOG max number of items logged */ + /* The following two are used to track instantaneous "load" in terms + * of operations per second. */ + long long ops_sec_last_sample_time; /* Timestamp of last sample (in ms) */ + long long ops_sec_last_sample_ops; /* numcommands in last sample */ + long long ops_sec_samples[REDIS_OPS_SEC_SAMPLES]; + int ops_sec_idx; /* Configuration */ int verbosity; /* Loglevel in redis.conf */ int maxidletime; /* Client timeout in seconds */ size_t client_max_querybuf_len; /* Limit for client query buffer length */ int dbnum; /* Total number of configured DBs */ int daemonize; /* True if running as a daemon */ + clientBufferLimitsConfig client_obuf_limits[REDIS_CLIENT_LIMIT_NUM_CLASSES]; /* AOF persistence */ int aof_state; /* REDIS_AOF_(ON|OFF|WAIT_REWRITE) */ int aof_fsync; /* Kind of fsync() policy */ @@ -567,6 +639,7 @@ struct redisServer { int aof_selected_db; /* Currently selected DB in AOF */ time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */ time_t aof_last_fsync; /* UNIX time of last fsync() */ + unsigned long aof_delayed_fsync; /* delayed AOF fsync() counter */ /* RDB persistence */ long long dirty; /* Changes to DB from the last save */ long long dirty_before_bgsave; /* Used to restore dirty on failed BGSAVE */ @@ -575,6 +648,12 @@ struct redisServer { int saveparamslen; /* Number of saving points */ char *rdb_filename; /* Name of RDB file */ int rdb_compression; /* Use compression in RDB? */ + int rdb_checksum; /* Use RDB checksum? */ + time_t lastsave; /* Unix time of last save succeeede */ + int lastbgsave_status; /* REDIS_OK or REDIS_ERR */ + int stop_writes_on_bgsave_err; /* Don't allow writes if can't BGSAVE */ + /* Propagation of commands in AOF / replication */ + redisOpArray also_propagate; /* Additional command to propagate. */ /* Logging */ char *logfile; /* Path of log file */ int syslog_enabled; /* Is syslog enabled? */ @@ -595,6 +674,7 @@ struct redisServer { char *repl_transfer_tmpfile; /* Slave-> master SYNC temp file name */ time_t repl_transfer_lastio; /* Unix time of the latest read, for timeout */ int repl_serve_stale_data; /* Serve stale data when link is down? */ + int repl_slave_ro; /* Slave is read only? */ time_t repl_down_since; /* Unix time at which link with master went down */ /* Limits */ unsigned int maxclients; /* Max number of simultaneous clients */ @@ -606,12 +686,13 @@ struct redisServer { list *unblocked_clients; /* list of clients to unblock before next loop */ /* Sort parameters - qsort_r() is only available under BSD so we * have to take this state global, in order to pass it to sortCompare() */ + int sort_dontsort; int sort_desc; int sort_alpha; int sort_bypattern; /* Zip structure config, see redis.conf for more information */ - size_t hash_max_zipmap_entries; - size_t hash_max_zipmap_value; + size_t hash_max_ziplist_entries; + size_t hash_max_ziplist_value; size_t list_max_ziplist_entries; size_t list_max_ziplist_value; size_t set_max_intset_entries; @@ -643,6 +724,7 @@ struct redisServer { char *assert_file; int assert_line; int bug_report_start; /* True if bug report header was already logged. */ + int watchdog_period; /* Software watchdog period in ms. 0 = off */ }; typedef struct pubsubPattern { @@ -715,10 +797,10 @@ typedef struct { * not both are required, store pointers in the iterator to avoid * unnecessary memory allocation for fields/values. */ typedef struct { + robj *subject; int encoding; - unsigned char *zi; - unsigned char *zk, *zv; - unsigned int zklen, zvlen; + + unsigned char *fptr, *vptr; dictIterator *di; dictEntry *de; @@ -738,7 +820,7 @@ extern dictType zsetDictType; extern dictType clusterNodesDictType; extern dictType dbDictType; extern double R_Zero, R_PosInf, R_NegInf, R_Nan; -dictType hashDictType; +extern dictType hashDictType; /*----------------------------------------------------------------------------- * Functions prototypes @@ -747,6 +829,9 @@ dictType hashDictType; /* Utils */ long long ustime(void); long long mstime(void); +void getRandomHexChars(char *p, unsigned int len); +uint64_t crc64(uint64_t crc, const unsigned char *s, uint64_t l); +void exitFromChild(int retcode); /* networking.c -- Networking and Client related operations */ redisClient *createClient(int fd); @@ -774,6 +859,7 @@ void addReplyStatus(redisClient *c, char *status); void addReplyDouble(redisClient *c, double d); void addReplyLongLong(redisClient *c, long long ll); void addReplyMultiBulkLen(redisClient *c, long length); +void copyClientOutputBuffer(redisClient *dst, redisClient *src); void *dupClientReplyValue(void *o); void getClientsMaxBuffers(unsigned long *longest_output_list, unsigned long *biggest_input_buffer); @@ -781,6 +867,13 @@ sds getClientInfoString(redisClient *client); sds getAllClientsInfoString(void); void rewriteClientCommandVector(redisClient *c, int argc, ...); void rewriteClientCommandArgument(redisClient *c, int i, robj *newval); +unsigned long getClientOutputBufferMemoryUsage(redisClient *c); +void freeClientsInAsyncFreeQueue(void); +void asyncCloseClientOnOutputBufferLimitReached(redisClient *c); +int getClientLimitClassByName(char *name); +char *getClientLimitClassName(int class); +void flushSlavesOutputBuffers(void); +void disconnectSlaves(void); #ifdef __GNUC__ void addReplyErrorFormat(redisClient *c, const char *fmt, ...) @@ -797,7 +890,7 @@ void listTypeTryConversion(robj *subject, robj *value); void listTypePush(robj *subject, robj *value, int where); robj *listTypePop(robj *subject, int where); unsigned long listTypeLength(robj *subject); -listTypeIterator *listTypeInitIterator(robj *subject, int index, unsigned char direction); +listTypeIterator *listTypeInitIterator(robj *subject, long index, unsigned char direction); void listTypeReleaseIterator(listTypeIterator *li); int listTypeNext(listTypeIterator *li, listTypeEntry *entry); robj *listTypeGet(listTypeEntry *entry); @@ -816,6 +909,7 @@ void freeClientMultiState(redisClient *c); void queueMultiCommand(redisClient *c); void touchWatchedKey(redisDb *db, robj *key); void touchWatchedKeysOnFlush(int dbid); +void discardTransaction(redisClient *c); /* Redis object implementation */ void decrRefCount(void *o); @@ -855,13 +949,13 @@ int equalStringObjects(robj *a, robj *b); unsigned long estimateObjectIdleTime(robj *o); /* Synchronous I/O with timeout */ -int syncWrite(int fd, char *ptr, ssize_t size, int timeout); -int syncRead(int fd, char *ptr, ssize_t size, int timeout); -int syncReadLine(int fd, char *ptr, ssize_t size, int timeout); +ssize_t syncWrite(int fd, char *ptr, ssize_t size, long long timeout); +ssize_t syncRead(int fd, char *ptr, ssize_t size, long long timeout); +ssize_t syncReadLine(int fd, char *ptr, ssize_t size, long long timeout); /* Replication */ void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc); -void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc); +void replicationFeedMonitors(redisClient *c, list *monitors, int dictid, robj **argv, int argc); void updateSlavesWaitingBgsave(int bgsaveerr); void replicationCron(void); @@ -904,15 +998,18 @@ unsigned int zsetLength(robj *zobj); void zsetConvert(robj *zobj, int encoding); /* Core functions */ -void freeMemoryIfNeeded(void); +int freeMemoryIfNeeded(void); int processCommand(redisClient *c); void setupSignalHandlers(void); struct redisCommand *lookupCommand(sds name); struct redisCommand *lookupCommandByCString(char *s); -void call(redisClient *c); +void call(redisClient *c, int flags); +void propagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int flags); +void alsoPropagate(struct redisCommand *cmd, int dbid, robj **argv, int argc, int target); int prepareForShutdown(); void redisLog(int level, const char *fmt, ...); void redisLogRaw(int level, const char *msg); +void redisLogFromHandler(int level, const char *msg); void usage(); void updateDictResizePolicy(void); int htNeedsResize(dict *dict); @@ -934,10 +1031,9 @@ unsigned long setTypeSize(robj *subject); void setTypeConvert(robj *subject, int enc); /* Hash data type */ -void convertToRealHash(robj *o); +void hashTypeConvert(robj *o, int enc); void hashTypeTryConversion(robj *subject, robj **argv, int start, int end); void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2); -int hashTypeGet(robj *o, robj *key, robj **objval, unsigned char **v, unsigned int *vlen); robj *hashTypeGetObject(robj *o, robj *key); int hashTypeExists(robj *o, robj *key); int hashTypeSet(robj *o, robj *key, robj *value); @@ -946,7 +1042,11 @@ unsigned long hashTypeLength(robj *o); hashTypeIterator *hashTypeInitIterator(robj *subject); void hashTypeReleaseIterator(hashTypeIterator *hi); int hashTypeNext(hashTypeIterator *hi); -int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen); +void hashTypeCurrentFromZiplist(hashTypeIterator *hi, int what, + unsigned char **vstr, + unsigned int *vlen, + long long *vll); +void hashTypeCurrentFromHashTable(hashTypeIterator *hi, int what, robj **dst); robj *hashTypeCurrentObject(hashTypeIterator *hi, int what); robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key); @@ -1145,6 +1245,7 @@ void clientCommand(redisClient *c); void evalCommand(redisClient *c); void evalShaCommand(redisClient *c); void scriptCommand(redisClient *c); +void timeCommand(redisClient *c); #if defined(__GNUC__) void *calloc(size_t count, size_t size) __attribute__ ((deprecated)); @@ -1158,5 +1259,10 @@ void _redisAssertWithInfo(redisClient *c, robj *o, char *estr, char *file, int l void _redisAssert(char *estr, char *file, int line); void _redisPanic(char *msg, char *file, int line); void bugReportStart(void); - +void redisLogObjectDebugInfo(robj *o); +void sigsegvHandler(int sig, siginfo_t *info, void *secret); +sds genRedisInfoString(char *section); +void enableWatchdog(int period); +void disableWatchdog(void); +void watchdogScheduleSignal(int period); #endif