X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/62ec599c363f36a8f2b0b7d39c1533895f491631..aa81e4d5f4b4d942b9340fd2d401e7795fa9fd1e:/src/redis.c?ds=inline diff --git a/src/redis.c b/src/redis.c index 21a5bd19..65cf3ace 100644 --- a/src/redis.c +++ b/src/redis.c @@ -74,10 +74,14 @@ struct redisCommand readonlyCommandTable[] = { {"setnx",setnxCommand,3,REDIS_CMD_DENYOOM,NULL,0,0,0}, {"setex",setexCommand,4,REDIS_CMD_DENYOOM,NULL,0,0,0}, {"append",appendCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1}, - {"substr",substrCommand,4,0,NULL,1,1,1}, {"strlen",strlenCommand,2,0,NULL,1,1,1}, {"del",delCommand,-2,0,NULL,0,0,0}, {"exists",existsCommand,2,0,NULL,1,1,1}, + {"setbit",setbitCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1}, + {"getbit",getbitCommand,3,0,NULL,1,1,1}, + {"setrange",setrangeCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1}, + {"getrange",getrangeCommand,4,0,NULL,1,1,1}, + {"substr",getrangeCommand,4,0,NULL,1,1,1}, {"incr",incrCommand,2,REDIS_CMD_DENYOOM,NULL,1,1,1}, {"decr",decrCommand,2,REDIS_CMD_DENYOOM,NULL,1,1,1}, {"mget",mgetCommand,-2,0,NULL,1,-1,1}, @@ -89,6 +93,7 @@ struct redisCommand readonlyCommandTable[] = { {"rpop",rpopCommand,2,0,NULL,1,1,1}, {"lpop",lpopCommand,2,0,NULL,1,1,1}, {"brpop",brpopCommand,-3,0,NULL,1,1,1}, + {"brpoplpush",brpoplpushCommand,4,REDIS_CMD_DENYOOM,NULL,1,2,1}, {"blpop",blpopCommand,-3,0,NULL,1,1,1}, {"llen",llenCommand,2,0,NULL,1,1,1}, {"lindex",lindexCommand,3,0,NULL,1,1,1}, @@ -96,7 +101,7 @@ struct redisCommand readonlyCommandTable[] = { {"lrange",lrangeCommand,4,0,NULL,1,1,1}, {"ltrim",ltrimCommand,4,0,NULL,1,1,1}, {"lrem",lremCommand,4,0,NULL,1,1,1}, - {"rpoplpush",rpoplpushcommand,3,REDIS_CMD_DENYOOM,NULL,1,2,1}, + {"rpoplpush",rpoplpushCommand,3,REDIS_CMD_DENYOOM,NULL,1,2,1}, {"sadd",saddCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1}, {"srem",sremCommand,3,0,NULL,1,1,1}, {"smove",smoveCommand,4,0,NULL,1,2,1}, @@ -124,7 +129,7 @@ struct redisCommand readonlyCommandTable[] = { {"zcount",zcountCommand,4,0,NULL,1,1,1}, {"zrevrange",zrevrangeCommand,-4,0,NULL,1,1,1}, {"zcard",zcardCommand,2,0,NULL,1,1,1}, - {"zscore",zscoreCommand,3,REDIS_CMD_DENYOOM,NULL,1,1,1}, + {"zscore",zscoreCommand,3,0,NULL,1,1,1}, {"zrank",zrankCommand,3,0,NULL,1,1,1}, {"zrevrank",zrevrankCommand,3,0,NULL,1,1,1}, {"hset",hsetCommand,4,REDIS_CMD_DENYOOM,NULL,1,1,1}, @@ -188,11 +193,13 @@ struct redisCommand readonlyCommandTable[] = { /*============================ Utility functions ============================ */ void redisLog(int level, const char *fmt, ...) { + const int syslogLevelMap[] = { LOG_DEBUG, LOG_INFO, LOG_NOTICE, LOG_WARNING }; + const char *c = ".-*#"; + time_t now = time(NULL); va_list ap; FILE *fp; - char *c = ".-*#"; char buf[64]; - time_t now; + char msg[REDIS_MAX_LOGMSG_LEN]; if (level < server.verbosity) return; @@ -200,15 +207,16 @@ void redisLog(int level, const char *fmt, ...) { if (!fp) return; va_start(ap, fmt); - now = time(NULL); - strftime(buf,64,"%d %b %H:%M:%S",localtime(&now)); - fprintf(fp,"[%d] %s %c ",(int)getpid(),buf,c[level]); - vfprintf(fp, fmt, ap); - fprintf(fp,"\n"); - fflush(fp); + vsnprintf(msg, sizeof(msg), fmt, ap); va_end(ap); + strftime(buf,sizeof(buf),"%d %b %H:%M:%S",localtime(&now)); + fprintf(fp,"[%d] %s %c %s\n",(int)getpid(),buf,c[level],msg); + fflush(fp); + if (server.logfile) fclose(fp); + + if (server.syslog_enabled) syslog(syslogLevelMap[level], "%s", msg); } /* Redis generally does not try to recover from out of memory conditions @@ -337,7 +345,7 @@ unsigned int dictEncObjHash(const void *key) { } } -/* Sets type */ +/* Sets type and diskstore negative caching hash table */ dictType setDictType = { dictEncObjHash, /* hash function */ NULL, /* key dup */ @@ -572,7 +580,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { } /* Close connections of timedout clients */ - if ((server.maxidletime && !(loops % 100)) || server.blpop_blocked_clients) + if ((server.maxidletime && !(loops % 100)) || server.bpop_blocked_clients) closeTimedoutClients(); /* Check if a background saving or AOF rewrite in progress terminated */ @@ -588,7 +596,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { } updateDictResizePolicy(); } - } else { + } else if (!server.ds_enabled) { /* If there is not a background saving in progress check if * we have to save now */ time_t now = time(NULL); @@ -610,28 +618,9 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { * in order to guarantee a strict consistency. */ if (server.masterhost == NULL) activeExpireCycle(); - /* Swap a few keys on disk if we are over the memory limit and VM - * is enbled. Try to free objects from the free list first. */ - if (vmCanSwapOut()) { - while (server.vm_enabled && zmalloc_used_memory() > - server.vm_max_memory) - { - int retval = (server.vm_max_threads == 0) ? - vmSwapOneObjectBlocking() : - vmSwapOneObjectThreaded(); - if (retval == REDIS_ERR && !(loops % 300) && - zmalloc_used_memory() > - (server.vm_max_memory+server.vm_max_memory/10)) - { - redisLog(REDIS_WARNING,"WARNING: vm-max-memory limit exceeded by more than 10%% but unable to swap more objects out!"); - } - /* Note that when using threade I/O we free just one object, - * because anyway when the I/O thread in charge to swap this - * object out will finish, the handler of completed jobs - * will try to swap more objects if we are still out of memory. */ - if (retval == REDIS_ERR || server.vm_max_threads > 0) break; - } - } + /* Remove a few cached objects from memory if we are over the + * configured memory limit */ + if (server.ds_enabled) cacheCron(); /* Replication cron function -- used to reconnect to master and * to detect transfer failures. */ @@ -645,21 +634,22 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) { * for ready file descriptors. */ void beforeSleep(struct aeEventLoop *eventLoop) { REDIS_NOTUSED(eventLoop); + listNode *ln; + redisClient *c; - /* Awake clients that got all the swapped keys they requested */ - if (server.vm_enabled && listLength(server.io_ready_clients)) { + /* Awake clients that got all the on disk keys they requested */ + if (server.ds_enabled && listLength(server.io_ready_clients)) { listIter li; - listNode *ln; listRewind(server.io_ready_clients,&li); while((ln = listNext(&li))) { - redisClient *c = ln->value; + c = ln->value; struct redisCommand *cmd; /* Resume the client. */ listDelNode(server.io_ready_clients,ln); c->flags &= (~REDIS_IO_WAIT); - server.vm_blocked_clients--; + server.cache_blocked_clients--; aeCreateFileEvent(server.el, c->fd, AE_READABLE, readQueryFromClient, c); cmd = lookupCommand(c->argv[0]->ptr); @@ -671,6 +661,19 @@ void beforeSleep(struct aeEventLoop *eventLoop) { processInputBuffer(c); } } + + /* Try to process pending commands for clients that were just unblocked. */ + while (listLength(server.unblocked_clients)) { + ln = listFirst(server.unblocked_clients); + redisAssert(ln != NULL); + c = ln->value; + listDelNode(server.unblocked_clients,ln); + + /* Process remaining data in the input buffer. */ + if (c->querybuf && sdslen(c->querybuf) > 0) + processInputBuffer(c); + } + /* Write the AOF buffer on disk */ flushAppendOnlyFile(); } @@ -702,6 +705,8 @@ void createSharedObjects(void) { "-ERR source and destination objects are the same\r\n")); shared.outofrangeerr = createObject(REDIS_STRING,sdsnew( "-ERR index out of range\r\n")); + shared.loadingerr = createObject(REDIS_STRING,sdsnew( + "-LOADING Redis is loading the dataset in memory\r\n")); shared.space = createObject(REDIS_STRING,sdsnew(" ")); shared.colon = createObject(REDIS_STRING,sdsnew(":")); shared.plus = createObject(REDIS_STRING,sdsnew("+")); @@ -739,7 +744,11 @@ void initServerConfig() { server.verbosity = REDIS_VERBOSE; server.maxidletime = REDIS_MAXIDLETIME; server.saveparams = NULL; + server.loading = 0; server.logfile = NULL; /* NULL = log on standard output */ + server.syslog_enabled = 0; + server.syslog_ident = zstrdup("redis"); + server.syslog_facility = LOG_LOCAL0; server.glueoutputbuf = 1; server.daemonize = 0; server.appendonly = 0; @@ -755,17 +764,14 @@ void initServerConfig() { server.rdbcompression = 1; server.activerehashing = 1; server.maxclients = 0; - server.blpop_blocked_clients = 0; + server.bpop_blocked_clients = 0; server.maxmemory = 0; server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU; server.maxmemory_samples = 3; - server.vm_enabled = 0; - server.vm_swap_file = zstrdup("/tmp/redis-%p.vm"); - server.vm_page_size = 256; /* 256 bytes per page */ - server.vm_pages = 1024*1024*100; /* 104 millions of pages */ - server.vm_max_memory = 1024LL*1024*1024*1; /* 1 GB of RAM */ - server.vm_max_threads = 4; - server.vm_blocked_clients = 0; + server.ds_enabled = 0; + server.ds_path = sdsnew("/tmp/redis.ds"); + server.cache_max_memory = 64LL*1024*1024; /* 64 MB of RAM */ + server.cache_blocked_clients = 0; server.hash_max_zipmap_entries = REDIS_HASH_MAX_ZIPMAP_ENTRIES; server.hash_max_zipmap_value = REDIS_HASH_MAX_ZIPMAP_VALUE; server.list_max_ziplist_entries = REDIS_LIST_MAX_ZIPLIST_ENTRIES; @@ -786,6 +792,7 @@ void initServerConfig() { server.masterport = 6379; server.master = NULL; server.replstate = REDIS_REPL_NONE; + server.repl_serve_stale_data = 1; /* Double constants initialization */ R_Zero = 0.0; @@ -809,15 +816,19 @@ void initServer() { signal(SIGPIPE, SIG_IGN); setupSigSegvAction(); - server.mainthread = pthread_self(); - server.devnull = fopen("/dev/null","w"); - if (server.devnull == NULL) { - redisLog(REDIS_WARNING, "Can't open /dev/null: %s", server.neterr); - exit(1); + if (server.syslog_enabled) { + openlog(server.syslog_ident, LOG_PID | LOG_NDELAY | LOG_NOWAIT, + server.syslog_facility); } + + server.mainthread = pthread_self(); server.clients = listCreate(); server.slaves = listCreate(); server.monitors = listCreate(); + server.unblocked_clients = listCreate(); + server.cache_flush_queue = listCreate(); + server.cache_flush_delay = 0; + createSharedObjects(); server.el = aeCreateEventLoop(); server.db = zmalloc(sizeof(redisDb)*server.dbnum); @@ -843,8 +854,10 @@ void initServer() { server.db[j].expires = dictCreate(&keyptrDictType,NULL); server.db[j].blocking_keys = dictCreate(&keylistDictType,NULL); server.db[j].watched_keys = dictCreate(&keylistDictType,NULL); - if (server.vm_enabled) + if (server.ds_enabled) { server.db[j].io_keys = dictCreate(&keylistDictType,NULL); + server.db[j].io_negcache = dictCreate(&setDictType,NULL); + } server.db[j].id = j; } server.pubsub_channels = dictCreate(&keylistDictType,NULL); @@ -861,6 +874,7 @@ void initServer() { server.stat_numcommands = 0; server.stat_numconnections = 0; server.stat_expiredkeys = 0; + server.stat_evictedkeys = 0; server.stat_starttime = time(NULL); server.stat_keyspace_misses = 0; server.stat_keyspace_hits = 0; @@ -880,7 +894,7 @@ void initServer() { } } - if (server.vm_enabled) vmInit(); + if (server.ds_enabled) dsInit(); } /* Populates the Redis Command Table starting from the hard coded list @@ -994,6 +1008,23 @@ int processCommand(redisClient *c) { return REDIS_OK; } + /* Only allow INFO and SLAVEOF when slave-serve-stale-data is no and + * we are a slave with a broken link with master. */ + if (server.masterhost && server.replstate != REDIS_REPL_CONNECTED && + server.repl_serve_stale_data == 0 && + cmd->proc != infoCommand && cmd->proc != slaveofCommand) + { + addReplyError(c, + "link with MASTER is down and slave-serve-stale-data is set to no"); + return REDIS_OK; + } + + /* Loading DB? Return an error if the command is not INFO */ + if (server.loading && cmd->proc != infoCommand) { + addReply(c, shared.loadingerr); + return REDIS_OK; + } + /* Exec the command */ if (c->flags & REDIS_MULTI && cmd->proc != execCommand && cmd->proc != discardCommand && @@ -1002,8 +1033,8 @@ int processCommand(redisClient *c) { queueMultiCommand(c,cmd); addReply(c,shared.queued); } else { - if (server.vm_enabled && server.vm_max_threads > 0 && - blockClientOnSwappedKeys(c,cmd)) return REDIS_ERR; + if (server.ds_enabled && blockClientOnSwappedKeys(c,cmd)) + return REDIS_ERR; call(c,cmd); } return REDIS_OK; @@ -1021,10 +1052,11 @@ int prepareForShutdown() { kill(server.bgsavechildpid,SIGKILL); rdbRemoveTempFile(server.bgsavechildpid); } - if (server.appendonly) { + if (server.ds_enabled) { + /* FIXME: flush all objects on disk */ + } else if (server.appendonly) { /* Append only file: fsync() the AOF and exit */ aof_fsync(server.appendfd); - if (server.vm_enabled) unlink(server.vm_swap_file); } else if (server.saveparamslen > 0) { /* Snapshotting. Perform a SYNC SAVE and exit */ if (rdbSave(server.dbfilename) != REDIS_OK) { @@ -1121,6 +1153,8 @@ sds genRedisInfoString(void) { "used_memory_rss:%zu\r\n" "mem_fragmentation_ratio:%.2f\r\n" "use_tcmalloc:%d\r\n" + "loading:%d\r\n" + "aof_enabled:%d\r\n" "changes_since_last_save:%lld\r\n" "bgsave_in_progress:%d\r\n" "last_save_time:%ld\r\n" @@ -1128,13 +1162,14 @@ sds genRedisInfoString(void) { "total_connections_received:%lld\r\n" "total_commands_processed:%lld\r\n" "expired_keys:%lld\r\n" + "evicted_keys:%lld\r\n" "keyspace_hits:%lld\r\n" "keyspace_misses:%lld\r\n" "hash_max_zipmap_entries:%zu\r\n" "hash_max_zipmap_value:%zu\r\n" "pubsub_channels:%ld\r\n" "pubsub_patterns:%u\r\n" - "vm_enabled:%d\r\n" + "ds_enabled:%d\r\n" "role:%s\r\n" ,REDIS_VERSION, redisGitSHA1(), @@ -1151,7 +1186,7 @@ sds genRedisInfoString(void) { (float)c_ru.ru_stime.tv_sec+(float)c_ru.ru_stime.tv_usec/1000000, listLength(server.clients)-listLength(server.slaves), listLength(server.slaves), - server.blpop_blocked_clients, + server.bpop_blocked_clients, zmalloc_used_memory(), hmem, zmalloc_get_rss(), @@ -1161,6 +1196,8 @@ sds genRedisInfoString(void) { #else 0, #endif + server.loading, + server.appendonly, server.dirty, server.bgsavechildpid != -1, server.lastsave, @@ -1168,13 +1205,14 @@ sds genRedisInfoString(void) { server.stat_numconnections, server.stat_numcommands, server.stat_expiredkeys, + server.stat_evictedkeys, server.stat_keyspace_hits, server.stat_keyspace_misses, server.hash_max_zipmap_entries, server.hash_max_zipmap_value, dictSize(server.pubsub_channels), listLength(server.pubsub_patterns), - server.vm_enabled != 0, + server.ds_enabled != 0, server.masterhost == NULL ? "master" : "slave" ); if (server.masterhost) { @@ -1183,43 +1221,63 @@ sds genRedisInfoString(void) { "master_port:%d\r\n" "master_link_status:%s\r\n" "master_last_io_seconds_ago:%d\r\n" + "master_sync_in_progress:%d\r\n" ,server.masterhost, server.masterport, (server.replstate == REDIS_REPL_CONNECTED) ? "up" : "down", - server.master ? ((int)(time(NULL)-server.master->lastinteraction)) : -1 + server.master ? ((int)(time(NULL)-server.master->lastinteraction)) : -1, + server.replstate == REDIS_REPL_TRANSFER ); + + if (server.replstate == REDIS_REPL_TRANSFER) { + info = sdscatprintf(info, + "master_sync_left_bytes:%ld\r\n" + "master_sync_last_io_seconds_ago:%d\r\n" + ,(long)server.repl_transfer_left, + (int)(time(NULL)-server.repl_transfer_lastio) + ); + } } - if (server.vm_enabled) { + if (server.ds_enabled) { lockThreadedIO(); info = sdscatprintf(info, - "vm_conf_max_memory:%llu\r\n" - "vm_conf_page_size:%llu\r\n" - "vm_conf_pages:%llu\r\n" - "vm_stats_used_pages:%llu\r\n" - "vm_stats_swapped_objects:%llu\r\n" - "vm_stats_swappin_count:%llu\r\n" - "vm_stats_swappout_count:%llu\r\n" - "vm_stats_io_newjobs_len:%lu\r\n" - "vm_stats_io_processing_len:%lu\r\n" - "vm_stats_io_processed_len:%lu\r\n" - "vm_stats_io_active_threads:%lu\r\n" - "vm_stats_blocked_clients:%lu\r\n" - ,(unsigned long long) server.vm_max_memory, - (unsigned long long) server.vm_page_size, - (unsigned long long) server.vm_pages, - (unsigned long long) server.vm_stats_used_pages, - (unsigned long long) server.vm_stats_swapped_objects, - (unsigned long long) server.vm_stats_swapins, - (unsigned long long) server.vm_stats_swapouts, - (unsigned long) listLength(server.io_newjobs), - (unsigned long) listLength(server.io_processing), - (unsigned long) listLength(server.io_processed), - (unsigned long) server.io_active_threads, - (unsigned long) server.vm_blocked_clients + "cache_max_memory:%llu\r\n" + "cache_blocked_clients:%lu\r\n" + ,(unsigned long long) server.cache_max_memory, + (unsigned long) server.cache_blocked_clients ); unlockThreadedIO(); } + if (server.loading) { + double perc; + time_t eta, elapsed; + off_t remaining_bytes = server.loading_total_bytes- + server.loading_loaded_bytes; + + perc = ((double)server.loading_loaded_bytes / + server.loading_total_bytes) * 100; + + elapsed = time(NULL)-server.loading_start_time; + if (elapsed == 0) { + eta = 1; /* A fake 1 second figure if we don't have enough info */ + } else { + eta = (elapsed*remaining_bytes)/server.loading_loaded_bytes; + } + + info = sdscatprintf(info, + "loading_start_time:%ld\r\n" + "loading_total_bytes:%llu\r\n" + "loading_loaded_bytes:%llu\r\n" + "loading_loaded_perc:%.2f\r\n" + "loading_eta_seconds:%ld\r\n" + ,(unsigned long) server.loading_start_time, + (unsigned long long) server.loading_total_bytes, + (unsigned long long) server.loading_loaded_bytes, + perc, + eta + ); + } for (j = 0; j < server.dbnum; j++) { long long keys, vkeys; @@ -1267,6 +1325,8 @@ void monitorCommand(redisClient *c) { void freeMemoryIfNeeded(void) { /* Remove keys accordingly to the active policy as long as we are * over the memory limit. */ + if (server.maxmemory_policy == REDIS_MAXMEMORY_NO_EVICTION) return; + while (server.maxmemory && zmalloc_used_memory() > server.maxmemory) { int j, k, freed = 0; @@ -1305,6 +1365,10 @@ void freeMemoryIfNeeded(void) { de = dictGetRandomKey(dict); thiskey = dictGetEntryKey(de); + /* When policy is volatile-lru we need an additonal lookup + * to locate the real key, as dict is set to db->expires. */ + if (server.maxmemory_policy == REDIS_MAXMEMORY_VOLATILE_LRU) + de = dictFind(db->dict, thiskey); o = dictGetEntryVal(de); thisval = estimateObjectIdleTime(o); @@ -1339,44 +1403,13 @@ void freeMemoryIfNeeded(void) { if (bestkey) { robj *keyobj = createStringObject(bestkey,sdslen(bestkey)); dbDelete(db,keyobj); - server.stat_expiredkeys++; + server.stat_evictedkeys++; decrRefCount(keyobj); freed++; } } if (!freed) return; /* nothing to free... */ } - - while(0) { - int j, k, freed = 0; - for (j = 0; j < server.dbnum; j++) { - int minttl = -1; - sds minkey = NULL; - robj *keyobj = NULL; - struct dictEntry *de; - - if (dictSize(server.db[j].expires)) { - freed = 1; - /* From a sample of three keys drop the one nearest to - * the natural expire */ - for (k = 0; k < 3; k++) { - time_t t; - - de = dictGetRandomKey(server.db[j].expires); - t = (time_t) dictGetEntryVal(de); - if (minttl == -1 || t < minttl) { - minkey = dictGetEntryKey(de); - minttl = t; - } - } - keyobj = createStringObject(minkey,sdslen(minkey)); - dbDelete(server.db+j,keyobj); - server.stat_expiredkeys++; - decrRefCount(keyobj); - } - } - if (!freed) return; /* nothing to free... */ - } } /* =================================== Main! ================================ */ @@ -1464,7 +1497,9 @@ int main(int argc, char **argv) { linuxOvercommitMemoryWarning(); #endif start = time(NULL); - if (server.appendonly) { + if (server.ds_enabled) { + redisLog(REDIS_NOTICE,"DB not loaded (running with disk back end)"); + } else if (server.appendonly) { if (loadAppendOnlyFile(server.appendfilename) == REDIS_OK) redisLog(REDIS_NOTICE,"DB loaded from append only file: %ld seconds",time(NULL)-start); } else {