removed some dead code, added evicted keys counter separated from expired keys.

[redis.git] / src / redis.h

diff --git a/src/redis.h b/src/redis.h
index 6fa3e49fe8d7068403f092ef6a038bdc15bcd6a8..bc1a58c17bba9fbf85d33180b162b2067566e1da 100644 (file)
--- a/src/redis.h
+++ b/src/redis.h
@@ -17,6 +17,7 @@
 #include <errno.h>
 #include <inttypes.h>
 #include <pthread.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <pthread.h>

+#include <syslog.h>

 
 #include "ae.h"     /* Event driven programming library */
 #include "sds.h"    /* Dynamic safe strings */
 
 #include "ae.h"     /* Event driven programming library */
 #include "sds.h"    /* Dynamic safe strings */


@@ -41,13 +42,13 @@
 #define REDIS_STATIC_ARGS       8
 #define REDIS_DEFAULT_DBNUM     16
 #define REDIS_CONFIGLINE_MAX    1024
 #define REDIS_STATIC_ARGS       8
 #define REDIS_DEFAULT_DBNUM     16
 #define REDIS_CONFIGLINE_MAX    1024

-#define REDIS_OBJFREELIST_MAX   1000000 /* Max number of objects to cache */

 #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_MAX_WRITE_PER_EVENT (1024*64)
 #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_SYNC_TIME     60      /* Slave can't take more to sync */
 #define REDIS_EXPIRELOOKUPS_PER_CRON    10 /* lookup 10 expires per loop */
 #define REDIS_MAX_WRITE_PER_EVENT (1024*64)
 #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
 
 /* If more then REDIS_WRITEV_THRESHOLD write packets are pending use writev */
 #define REDIS_WRITEV_THRESHOLD      3


@@ -153,7 +154,8 @@
 /* Slave replication state - slave side */
 #define REDIS_REPL_NONE 0   /* No active replication */
 #define REDIS_REPL_CONNECT 1    /* Must connect to master */
 /* Slave replication state - slave side */
 #define REDIS_REPL_NONE 0   /* No active replication */
 #define REDIS_REPL_CONNECT 1    /* Must connect to master */

-#define REDIS_REPL_CONNECTED 2  /* Connected to master */
+#define REDIS_REPL_TRANSFER 2    /* Receiving .rdb from master */
+#define REDIS_REPL_CONNECTED 3  /* Connected to master */

 
 /* Slave replication state - from the point of view of master
  * Note that in SEND_BULK and ONLINE state the slave receives new updates
 
 /* Slave replication state - from the point of view of master
  * Note that in SEND_BULK and ONLINE state the slave receives new updates


@@ -194,9 +196,9 @@
 /* Zip structure related defaults */
 #define REDIS_HASH_MAX_ZIPMAP_ENTRIES 64
 #define REDIS_HASH_MAX_ZIPMAP_VALUE 512
 /* 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
 
 /* Sets operations codes */
 #define REDIS_OP_UNION 0


@@ -209,6 +211,7 @@
 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4
 #define REDIS_MAXMEMORY_VOLATILE_RANDOM 2
 #define REDIS_MAXMEMORY_ALLKEYS_LRU 3
 #define REDIS_MAXMEMORY_ALLKEYS_RANDOM 4

+#define REDIS_MAXMEMORY_NO_EVICTION 5

 
 /* We can print the stacktrace, so our assert is defined this way: */
 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))
 
 /* We can print the stacktrace, so our assert is defined this way: */
 #define redisAssert(_e) ((_e)?(void)0 : (_redisAssert(#_e,__FILE__,__LINE__),_exit(1)))


@@ -292,6 +295,16 @@ typedef struct multiState {
     int count;              /* Total number of MULTI commands */
 } 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 {
 /* With multiplexing we need to take per-clinet state.
  * Clients are taken in a liked list. */
 typedef struct redisClient {


@@ -315,11 +328,7 @@ typedef struct redisClient {
     long repldboff;         /* replication DB file offset */
     off_t repldbsize;       /* replication DB file size */
     multiState mstate;      /* MULTI/EXEC state */
     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 */
     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 */


@@ -340,7 +349,7 @@ struct sharedObjectsStruct {
     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
     *colon, *nullbulk, *nullmultibulk, *queued,
     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
     robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *cnegone, *pong, *space,
     *colon, *nullbulk, *nullmultibulk, *queued,
     *emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,

-    *outofrangeerr, *plus,
+    *outofrangeerr, *loadingerr, *plus,

     *select0, *select1, *select2, *select3, *select4,
     *select5, *select6, *select7, *select8, *select9,
     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,
     *select0, *select1, *select2, *select3, *select4,
     *select5, *select6, *select7, *select8, *select9,
     *messagebulk, *pmessagebulk, *subscribebulk, *unsubscribebulk, *mbulk3,


@@ -360,17 +369,25 @@ struct redisServer {
     long long dirty;            /* changes to DB from the last save */
     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
     list *clients;
     long long dirty;            /* changes to DB from the last save */
     long long dirty_before_bgsave; /* used to restore dirty on failed BGSAVE */
     list *clients;

+    dict *commands;             /* Command table hahs table */
+    /* RDB / AOF loading information */
+    int loading;
+    off_t loading_total_bytes;
+    off_t loading_loaded_bytes;
+    time_t loading_start_time;
+    /* Fast pointers to often looked up command */
+    struct redisCommand *delCommand, *multiCommand;

     list *slaves, *monitors;
     char neterr[ANET_ERR_LEN];
     aeEventLoop *el;
     int cronloops;              /* number of times the cron function run */
     list *slaves, *monitors;
     char neterr[ANET_ERR_LEN];
     aeEventLoop *el;
     int cronloops;              /* number of times the cron function run */

-    list *objfreelist;          /* A list of freed objects to avoid malloc() */

     time_t lastsave;                /* Unix time of last save succeeede */
     /* Fields used only for stats */
     time_t stat_starttime;          /* server start time */
     long long stat_numcommands;     /* number of processed commands */
     long long stat_numconnections;  /* number of connections received */
     long long stat_expiredkeys;     /* number of expired keys */
     time_t lastsave;                /* Unix time of last save succeeede */
     /* Fields used only for stats */
     time_t stat_starttime;          /* server start time */
     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 */
     long long stat_keyspace_hits;   /* number of successful lookups of keys */
     long long stat_keyspace_misses; /* number of failed lookups of keys */
     /* Configuration */


@@ -394,6 +411,9 @@ struct redisServer {
     struct saveparam *saveparams;
     int saveparamslen;
     char *logfile;
     struct saveparam *saveparams;
     int saveparamslen;
     char *logfile;

+    int syslog_enabled;
+    char *syslog_ident;
+    int syslog_facility;

     char *dbfilename;
     char *appendfilename;
     char *requirepass;
     char *dbfilename;
     char *appendfilename;
     char *requirepass;


@@ -401,17 +421,27 @@ struct redisServer {
     int activerehashing;
     /* Replication related */
     int isslave;
     int activerehashing;
     /* Replication related */
     int isslave;

+    /* Slave specific fields */

     char *masterauth;
     char *masterhost;
     int masterport;
     redisClient *master;    /* client that is master for this slave */
     char *masterauth;
     char *masterhost;
     int masterport;
     redisClient *master;    /* client that is master for this slave */

-    int replstate;
+    int replstate;          /* replication status if the instance is a slave */
+    off_t repl_transfer_left;  /* bytes left reading .rdb  */
+    int repl_transfer_s;    /* slave -> master SYNC socket */
+    int repl_transfer_fd;   /* slave -> master SYNC temp file descriptor */
+    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? */
+    /* Limits */

     unsigned int maxclients;
     unsigned long long maxmemory;
     int maxmemory_policy;
     int maxmemory_samples;
     unsigned int maxclients;
     unsigned long long maxmemory;
     int maxmemory_policy;
     int maxmemory_samples;

-    unsigned int blpop_blocked_clients;
+    /* Blocked clients */
+    unsigned int bpop_blocked_clients;

     unsigned int vm_blocked_clients;
     unsigned int vm_blocked_clients;

+    list *unblocked_clients;

     /* 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;
     /* 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;


@@ -445,7 +475,6 @@ 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 */
     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 obj_freelist_mutex; /* safe redis objects creation/free */

     pthread_mutex_t io_swapfile_mutex; /* So we can lseek + write */
     pthread_attr_t io_threads_attr; /* attributes for threads creation */
     int io_active_threads; /* Number of running I/O threads */
     pthread_mutex_t io_swapfile_mutex; /* So we can lseek + write */
     pthread_attr_t io_threads_attr; /* attributes for threads creation */
     int io_active_threads; /* Number of running I/O threads */


@@ -465,7 +494,6 @@ struct redisServer {
     dict *pubsub_channels; /* Map channels to list of subscribed clients */
     list *pubsub_patterns; /* A list of pubsub_patterns */
     /* Misc */
     dict *pubsub_channels; /* Map channels to list of subscribed clients */
     list *pubsub_patterns; /* A list of pubsub_patterns */
     /* Misc */

-    FILE *devnull;

     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
     unsigned lruclock_padding:10;
 };
     unsigned lruclock:22;        /* clock incrementing every minute, for LRU */
     unsigned lruclock_padding:10;
 };


@@ -624,6 +652,8 @@ void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 void addReplyBulk(redisClient *c, robj *obj);
 void addReplyBulkCString(redisClient *c, char *s);
 void readQueryFromClient(aeEventLoop *el, int fd, void *privdata, int mask);
 void addReplyBulk(redisClient *c, robj *obj);
 void addReplyBulkCString(redisClient *c, char *s);

+void addReplyBulkCBuffer(redisClient *c, void *p, size_t len);
+void addReplyBulkLongLong(redisClient *c, long long ll);

 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 void addReply(redisClient *c, robj *obj);
 void addReplySds(redisClient *c, sds s);
 void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
 void addReply(redisClient *c, robj *obj);
 void addReplySds(redisClient *c, sds s);


@@ -683,7 +713,6 @@ robj *dupStringObject(robj *o);
 robj *tryObjectEncoding(robj *o);
 robj *getDecodedObject(robj *o);
 size_t stringObjectLen(robj *o);
 robj *tryObjectEncoding(robj *o);
 robj *getDecodedObject(robj *o);
 size_t stringObjectLen(robj *o);

-int tryFreeOneObjectFromFreelist(void);

 robj *createStringObjectFromLongLong(long long value);
 robj *createListObject(void);
 robj *createZiplistObject(void);
 robj *createStringObjectFromLongLong(long long value);
 robj *createListObject(void);
 robj *createZiplistObject(void);


@@ -715,6 +744,12 @@ void replicationFeedSlaves(list *slaves, int dictid, robj **argv, int argc);
 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 int syncWithMaster(void);
 void updateSlavesWaitingBgsave(int bgsaveerr);
 void replicationFeedMonitors(list *monitors, int dictid, robj **argv, int argc);
 int syncWithMaster(void);
 void updateSlavesWaitingBgsave(int bgsaveerr);

+void replicationCron(void);
+
+/* Generic persistence functions */
+void startLoading(FILE *fp);
+void loadingProgress(off_t pos);
+void stopLoading(void);

 
 /* RDB persistence */
 int rdbLoad(char *filename);
 
 /* RDB persistence */
 int rdbLoad(char *filename);


@@ -722,8 +757,8 @@ int rdbSaveBackground(char *filename);
 void rdbRemoveTempFile(pid_t childpid);
 int rdbSave(char *filename);
 int rdbSaveObject(FILE *fp, robj *o);
 void rdbRemoveTempFile(pid_t childpid);
 int rdbSave(char *filename);
 int rdbSaveObject(FILE *fp, robj *o);

-off_t rdbSavedObjectPages(robj *o, FILE *fp);
-off_t rdbSavedObjectLen(robj *o, FILE *fp);
+off_t rdbSavedObjectLen(robj *o);
+off_t rdbSavedObjectPages(robj *o);

 robj *rdbLoadObject(int type, FILE *fp);
 void backgroundSaveDoneHandler(int statloc);
 
 robj *rdbLoadObject(int type, FILE *fp);
 void backgroundSaveDoneHandler(int statloc);
 


@@ -746,7 +781,8 @@ zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
 void freeMemoryIfNeeded(void);
 int processCommand(redisClient *c);
 void setupSigSegvAction(void);
 void freeMemoryIfNeeded(void);
 int processCommand(redisClient *c);
 void setupSigSegvAction(void);

-struct redisCommand *lookupCommand(char *name);
+struct redisCommand *lookupCommand(sds name);
+struct redisCommand *lookupCommandByCString(char *s);

 void call(redisClient *c, struct redisCommand *cmd);
 int prepareForShutdown();
 void redisLog(int level, const char *fmt, ...);
 void call(redisClient *c, struct redisCommand *cmd);
 int prepareForShutdown();
 void redisLog(int level, const char *fmt, ...);


@@ -754,6 +790,7 @@ void usage();
 void updateDictResizePolicy(void);
 int htNeedsResize(dict *dict);
 void oom(const char *msg);
 void updateDictResizePolicy(void);
 int htNeedsResize(dict *dict);
 void oom(const char *msg);

+void populateCommandTable(void);

 
 /* Virtual Memory */
 void vmInit(void);
 
 /* Virtual Memory */
 void vmInit(void);


@@ -789,8 +826,9 @@ int setTypeRemove(robj *subject, robj *value);
 int setTypeIsMember(robj *subject, robj *value);
 setTypeIterator *setTypeInitIterator(robj *subject);
 void setTypeReleaseIterator(setTypeIterator *si);
 int setTypeIsMember(robj *subject, robj *value);
 setTypeIterator *setTypeInitIterator(robj *subject);
 void setTypeReleaseIterator(setTypeIterator *si);

-robj *setTypeNext(setTypeIterator *si);
-robj *setTypeRandomElement(robj *subject);
+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);
 
 unsigned long setTypeSize(robj *subject);
 void setTypeConvert(robj *subject, int enc);
 


@@ -798,7 +836,8 @@ 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);
 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);
 int hashTypeExists(robj *o, robj *key);
 int hashTypeSet(robj *o, robj *key, robj *value);
 int hashTypeDelete(robj *o, robj *key);


@@ -806,7 +845,8 @@ unsigned long hashTypeLength(robj *o);
 hashTypeIterator *hashTypeInitIterator(robj *subject);
 void hashTypeReleaseIterator(hashTypeIterator *hi);
 int hashTypeNext(hashTypeIterator *hi);
 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 */
 robj *hashTypeLookupWriteOrCreate(redisClient *c, robj *key);
 
 /* Pub / Sub */


@@ -863,6 +903,10 @@ void setexCommand(redisClient *c);
 void getCommand(redisClient *c);
 void delCommand(redisClient *c);
 void existsCommand(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);
 void incrCommand(redisClient *c);
 void decrCommand(redisClient *c);
 void incrbyCommand(redisClient *c);


@@ -910,7 +954,7 @@ void flushdbCommand(redisClient *c);
 void flushallCommand(redisClient *c);
 void sortCommand(redisClient *c);
 void lremCommand(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);
 void infoCommand(redisClient *c);
 void mgetCommand(redisClient *c);
 void monitorCommand(redisClient *c);


@@ -939,8 +983,8 @@ void execCommand(redisClient *c);
 void discardCommand(redisClient *c);
 void blpopCommand(redisClient *c);
 void brpopCommand(redisClient *c);
 void discardCommand(redisClient *c);
 void blpopCommand(redisClient *c);
 void brpopCommand(redisClient *c);

+void brpoplpushCommand(redisClient *c);

 void appendCommand(redisClient *c);
 void appendCommand(redisClient *c);

-void substrCommand(redisClient *c);

 void strlenCommand(redisClient *c);
 void zrankCommand(redisClient *c);
 void zrevrankCommand(redisClient *c);
 void strlenCommand(redisClient *c);
 void zrankCommand(redisClient *c);
 void zrevrankCommand(redisClient *c);