X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/a5be65f71c927601260f4518236cbc7bc3d87965..6eaad66373982aa9c1c0ff6b584c542670548d0e:/src/redis.h diff --git a/src/redis.h b/src/redis.h index e012db4c..b15bb370 100644 --- a/src/redis.h +++ b/src/redis.h @@ -17,6 +17,7 @@ #include #include #include +#include #include "ae.h" /* Event driven programming library */ #include "sds.h" /* Dynamic safe strings */ @@ -47,6 +48,7 @@ #define REDIS_REQUEST_MAX_SIZE (1024*1024*256) /* max bytes in inline command */ #define REDIS_SHARED_INTEGERS 10000 #define REDIS_REPLY_CHUNK_BYTES (5*1500) /* 5 TCP packets with default MTU */ +#define REDIS_MAX_LOGMSG_LEN 1024 /* Default maximum length of syslog messages */ /* If more then REDIS_WRITEV_THRESHOLD write packets are pending use writev */ #define REDIS_WRITEV_THRESHOLD 3 @@ -117,23 +119,14 @@ #define REDIS_RDB_ENC_INT32 2 /* 32 bit signed integer */ #define REDIS_RDB_ENC_LZF 3 /* string compressed with FASTLZ */ -/* Virtual memory object->where field. */ -#define REDIS_VM_MEMORY 0 /* The object is on memory */ -#define REDIS_VM_SWAPPED 1 /* The object is on disk */ -#define REDIS_VM_SWAPPING 2 /* Redis is swapping this object on disk */ -#define REDIS_VM_LOADING 3 /* Redis is loading this object from disk */ - -/* Virtual memory static configuration stuff. - * Check vmFindContiguousPages() to know more about this magic numbers. */ -#define REDIS_VM_MAX_NEAR_PAGES 65536 -#define REDIS_VM_MAX_RANDOM_JUMP 4096 -#define REDIS_VM_MAX_THREADS 32 -#define REDIS_THREAD_STACK_SIZE (1024*1024*4) -/* The following is the *percentage* of completed I/O jobs to process when the - * handelr is called. While Virtual Memory I/O operations are performed by - * threads, this operations must be processed by the main thread when completed - * in order to take effect. */ +/* Scheduled IO opeations flags. */ +#define REDIS_IO_LOAD 1 +#define REDIS_IO_SAVE 2 +#define REDIS_IO_LOADINPROG 4 +#define REDIS_IO_SAVEINPROG 8 + #define REDIS_MAX_COMPLETED_JOBS_PROCESSED 1 +#define REDIS_THREAD_STACK_SIZE (1024*1024*4) /* Client flags */ #define REDIS_SLAVE 1 /* This client is a slave server */ @@ -194,9 +187,9 @@ /* Zip structure related defaults */ #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 64 #define REDIS_HASH_MAX_ZIPMAP_VALUE 512 -#define REDIS_LIST_MAX_ZIPLIST_ENTRIES 1024 -#define REDIS_LIST_MAX_ZIPLIST_VALUE 32 -#define REDIS_SET_MAX_INTSET_ENTRIES 4096 +#define REDIS_LIST_MAX_ZIPLIST_ENTRIES 512 +#define REDIS_LIST_MAX_ZIPLIST_VALUE 64 +#define REDIS_SET_MAX_INTSET_ENTRIES 512 /* Sets operations codes */ #define REDIS_OP_UNION 0 @@ -228,7 +221,7 @@ void _redisPanic(char *msg, char *file, int line); #define REDIS_LRU_CLOCK_RESOLUTION 10 /* LRU clock resolution in seconds */ typedef struct redisObject { unsigned type:4; - unsigned storage:2; /* REDIS_VM_MEMORY or REDIS_VM_SWAPPING */ + unsigned notused:2; /* Not used */ unsigned encoding:4; unsigned lru:22; /* lru time (relative to server.lruclock) */ int refcount; @@ -269,14 +262,15 @@ typedef struct vmPointer { _var.type = REDIS_STRING; \ _var.encoding = REDIS_ENCODING_RAW; \ _var.ptr = _ptr; \ - _var.storage = REDIS_VM_MEMORY; \ } while(0); typedef struct redisDb { dict *dict; /* The keyspace for this DB */ dict *expires; /* Timeout of keys with a timeout set */ dict *blocking_keys; /* Keys with clients waiting for data (BLPOP) */ - dict *io_keys; /* Keys with clients waiting for VM I/O */ + dict *io_keys; /* Keys with clients waiting for DS I/O */ + dict *io_negcache; /* Negative caching for disk store */ + dict *io_queued; /* Queued IO operations hash table */ dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */ int id; } redisDb; @@ -293,6 +287,16 @@ typedef struct multiState { int count; /* Total number of MULTI commands */ } multiState; +typedef struct blockingState { + robj **keys; /* The key we are waiting to terminate a blocking + * operation such as BLPOP. Otherwise NULL. */ + int count; /* Number of blocking keys */ + time_t timeout; /* Blocking operation timeout. If UNIX current time + * is >= timeout then the operation timed out. */ + robj *target; /* The key that should receive the element, + * for BRPOPLPUSH. */ +} blockingState; + /* With multiplexing we need to take per-clinet state. * Clients are taken in a liked list. */ typedef struct redisClient { @@ -316,11 +320,7 @@ typedef struct redisClient { long repldboff; /* replication DB file offset */ off_t repldbsize; /* replication DB file size */ multiState mstate; /* MULTI/EXEC state */ - robj **blocking_keys; /* The key we are waiting to terminate a blocking - * operation such as BLPOP. Otherwise NULL. */ - int blocking_keys_num; /* Number of blocking keys */ - time_t blockingto; /* Blocking operation timeout. If UNIX current time - * is >= blockingto then the operation timed out. */ + blockingState bpop; /* blocking state */ list *io_keys; /* Keys this client is waiting to be loaded from the * swap file in order to continue. */ list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */ @@ -379,6 +379,7 @@ struct redisServer { long long stat_numcommands; /* number of processed commands */ long long stat_numconnections; /* number of connections received */ long long stat_expiredkeys; /* number of expired keys */ + long long stat_evictedkeys; /* number of evicted keys (maxmemory) */ long long stat_keyspace_hits; /* number of successful lookups of keys */ long long stat_keyspace_misses; /* number of failed lookups of keys */ /* Configuration */ @@ -402,6 +403,9 @@ struct redisServer { struct saveparam *saveparams; int saveparamslen; char *logfile; + int syslog_enabled; + char *syslog_ident; + int syslog_facility; char *dbfilename; char *appendfilename; char *requirepass; @@ -427,31 +431,26 @@ struct redisServer { int maxmemory_policy; int maxmemory_samples; /* Blocked clients */ - unsigned int blpop_blocked_clients; - unsigned int vm_blocked_clients; + unsigned int bpop_blocked_clients; + unsigned int cache_blocked_clients; + list *unblocked_clients; /* list of clients to unblock before next loop */ + list *cache_io_queue; /* IO operations queue */ + int cache_flush_delay; /* seconds to wait before flushing keys */ /* 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_desc; int sort_alpha; int sort_bypattern; /* Virtual memory configuration */ - int vm_enabled; - char *vm_swap_file; - off_t vm_page_size; - off_t vm_pages; - unsigned long long vm_max_memory; + int ds_enabled; /* backend disk in redis.conf */ + char *ds_path; /* location of the disk store on disk */ + unsigned long long cache_max_memory; /* Zip structure config */ size_t hash_max_zipmap_entries; size_t hash_max_zipmap_value; size_t list_max_ziplist_entries; size_t list_max_ziplist_value; size_t set_max_intset_entries; - /* Virtual memory state */ - FILE *vm_fp; - int vm_fd; - off_t vm_next_page; /* Next probably empty page */ - off_t vm_near_pages; /* Number of pages allocated sequentially */ - unsigned char *vm_bitmap; /* Bitmap of free/used pages */ time_t unixtime; /* Unix time sampled every second. */ /* Virtual memory I/O threads stuff */ /* An I/O thread process an element taken from the io_jobs queue and @@ -462,7 +461,7 @@ struct redisServer { list *io_processed; /* List of VM I/O jobs already processed */ list *io_ready_clients; /* Clients ready to be unblocked. All keys loaded */ pthread_mutex_t io_mutex; /* lock to access io_jobs/io_done/io_thread_job */ - pthread_mutex_t io_swapfile_mutex; /* So we can lseek + write */ + pthread_cond_t io_condvar; /* I/O threads conditional variable */ pthread_attr_t io_threads_attr; /* attributes for threads creation */ int io_active_threads; /* Number of running I/O threads */ int vm_max_threads; /* Max number of I/O threads running at the same time */ @@ -547,25 +546,27 @@ typedef struct zset { zskiplist *zsl; } zset; -/* VM threaded I/O request message */ -#define REDIS_IOJOB_LOAD 0 /* Load from disk to memory */ -#define REDIS_IOJOB_PREPARE_SWAP 1 /* Compute needed pages */ -#define REDIS_IOJOB_DO_SWAP 2 /* Swap from memory to disk */ +/* DIsk store threaded I/O request message */ +#define REDIS_IOJOB_LOAD 0 +#define REDIS_IOJOB_SAVE 1 + typedef struct iojob { int type; /* Request type, REDIS_IOJOB_* */ redisDb *db;/* Redis database */ - robj *key; /* This I/O request is about swapping this key */ - robj *id; /* Unique identifier of this job: - this is the object to swap for REDIS_IOREQ_*_SWAP, or the - vmpointer objct for REDIS_IOREQ_LOAD. */ - robj *val; /* the value to swap for REDIS_IOREQ_*_SWAP, otherwise this - * field is populated by the I/O thread for REDIS_IOREQ_LOAD. */ - off_t page; /* Swap page where to read/write the object */ - off_t pages; /* Swap pages needed to save object. PREPARE_SWAP return val */ - int canceled; /* True if this command was canceled by blocking side of VM */ - pthread_t thread; /* ID of the thread processing this entry */ + robj *key; /* This I/O request is about this key */ + robj *val; /* the value to swap for REDIS_IOJOB_SAVE, otherwise this + * field is populated by the I/O thread for REDIS_IOJOB_LOAD. */ + time_t expire; /* Expire time for this key on REDIS_IOJOB_LOAD */ } iojob; +/* IO operations scheduled -- check dscache.c for more info */ +typedef struct ioop { + int type; + redisDb *db; + robj *key; + time_t ctime; /* This is the creation time of the entry. */ +} ioop; + /* Structure to hold list iteration abstraction. */ typedef struct { robj *subject; @@ -748,6 +749,10 @@ off_t rdbSavedObjectLen(robj *o); off_t rdbSavedObjectPages(robj *o); robj *rdbLoadObject(int type, FILE *fp); void backgroundSaveDoneHandler(int statloc); +int rdbSaveKeyValuePair(FILE *fp, redisDb *db, robj *key, robj *val, time_t now); +int rdbLoadType(FILE *fp); +time_t rdbLoadTime(FILE *fp); +robj *rdbLoadStringObject(FILE *fp); /* AOF persistence */ void flushAppendOnlyFile(void); @@ -779,32 +784,38 @@ int htNeedsResize(dict *dict); void oom(const char *msg); void populateCommandTable(void); -/* Virtual Memory */ -void vmInit(void); -void vmMarkPagesFree(off_t page, off_t count); -robj *vmLoadObject(robj *o); -robj *vmPreviewObject(robj *o); -int vmSwapOneObjectBlocking(void); -int vmSwapOneObjectThreaded(void); -int vmCanSwapOut(void); +/* Disk store */ +int dsOpen(void); +int dsClose(void); +int dsSet(redisDb *db, robj *key, robj *val); +robj *dsGet(redisDb *db, robj *key, time_t *expire); +int dsDel(redisDb *db, robj *key); +int dsExists(redisDb *db, robj *key); +void dsFlushDb(int dbid); + +/* Disk Store Cache */ +void dsInit(void); void vmThreadedIOCompletedJob(aeEventLoop *el, int fd, void *privdata, int mask); -void vmCancelThreadedIOJob(robj *o); void lockThreadedIO(void); void unlockThreadedIO(void); -int vmSwapObjectThreaded(robj *key, robj *val, redisDb *db); void freeIOJob(iojob *j); void queueIOJob(iojob *j); -int vmWriteObjectOnSwap(robj *o, off_t page); -robj *vmReadObjectFromSwap(off_t page, int type); void waitEmptyIOJobsQueue(void); -void vmReopenSwapFile(void); -int vmFreePage(off_t page); +void processAllPendingIOJobs(void); void zunionInterBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv); void execBlockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd, int argc, robj **argv); int blockClientOnSwappedKeys(redisClient *c, struct redisCommand *cmd); int dontWaitForSwappedKey(redisClient *c, robj *key); void handleClientsBlockedOnSwappedKey(redisDb *db, robj *key); -vmpointer *vmSwapObjectBlocking(robj *val); +int cacheFreeOneEntry(void); +void cacheScheduleIOAddFlag(redisDb *db, robj *key, long flag); +void cacheScheduleIODelFlag(redisDb *db, robj *key, long flag); +int cacheScheduleIOGetFlags(redisDb *db, robj *key); +void cacheScheduleIO(redisDb *db, robj *key, int type); +void cacheCron(void); +int cacheKeyMayExist(redisDb *db, robj *key); +void cacheSetKeyMayExist(redisDb *db, robj *key); +void cacheSetKeyDoesNotExist(redisDb *db, robj *key); /* Set data type */ robj *setTypeCreate(robj *value); @@ -813,8 +824,9 @@ int setTypeRemove(robj *subject, robj *value); int setTypeIsMember(robj *subject, robj *value); setTypeIterator *setTypeInitIterator(robj *subject); void setTypeReleaseIterator(setTypeIterator *si); -robj *setTypeNext(setTypeIterator *si); -int setTypeRandomElement(robj *setobj, robj **objele, long long *llele); +int setTypeNext(setTypeIterator *si, robj **objele, int64_t *llele); +robj *setTypeNextObject(setTypeIterator *si); +int setTypeRandomElement(robj *setobj, robj **objele, int64_t *llele); unsigned long setTypeSize(robj *subject); void setTypeConvert(robj *subject, int enc); @@ -822,7 +834,8 @@ void setTypeConvert(robj *subject, int enc); void convertToRealHash(robj *o); void hashTypeTryConversion(robj *subject, robj **argv, int start, int end); void hashTypeTryObjectEncoding(robj *subject, robj **o1, robj **o2); -robj *hashTypeGet(robj *o, robj *key); +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); int hashTypeDelete(robj *o, robj *key); @@ -830,7 +843,8 @@ unsigned long hashTypeLength(robj *o); hashTypeIterator *hashTypeInitIterator(robj *subject); void hashTypeReleaseIterator(hashTypeIterator *hi); int hashTypeNext(hashTypeIterator *hi); -robj *hashTypeCurrent(hashTypeIterator *hi, int what); +int hashTypeCurrent(hashTypeIterator *hi, int what, robj **objval, unsigned char **v, unsigned int *vlen); +robj *hashTypeCurrentObject(hashTypeIterator *hi, int what); robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key); /* Pub / Sub */ @@ -872,6 +886,8 @@ robj *dbRandomKey(redisDb *db); int dbDelete(redisDb *db, robj *key); long long emptyDb(); int selectDb(redisClient *c, int id); +void signalModifiedKey(redisDb *db, robj *key); +void signalFlushedDb(int dbid); /* Git SHA1 */ char *redisGitSHA1(void); @@ -887,6 +903,10 @@ void setexCommand(redisClient *c); void getCommand(redisClient *c); void delCommand(redisClient *c); void existsCommand(redisClient *c); +void setbitCommand(redisClient *c); +void getbitCommand(redisClient *c); +void setrangeCommand(redisClient *c); +void getrangeCommand(redisClient *c); void incrCommand(redisClient *c); void decrCommand(redisClient *c); void incrbyCommand(redisClient *c); @@ -934,7 +954,7 @@ void flushdbCommand(redisClient *c); void flushallCommand(redisClient *c); void sortCommand(redisClient *c); void lremCommand(redisClient *c); -void rpoplpushcommand(redisClient *c); +void rpoplpushCommand(redisClient *c); void infoCommand(redisClient *c); void mgetCommand(redisClient *c); void monitorCommand(redisClient *c); @@ -963,8 +983,8 @@ void execCommand(redisClient *c); void discardCommand(redisClient *c); void blpopCommand(redisClient *c); void brpopCommand(redisClient *c); +void brpoplpushCommand(redisClient *c); void appendCommand(redisClient *c); -void substrCommand(redisClient *c); void strlenCommand(redisClient *c); void zrankCommand(redisClient *c); void zrevrankCommand(redisClient *c);