+/*
+ * Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Redis nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
#ifndef __REDIS_H
#define __REDIS_H
#define REDIS_SLOWLOG_MAX_LEN 128
#define REDIS_MAX_CLIENTS 10000
#define REDIS_AUTHPASS_MAX_LEN 512
-
+#define REDIS_DEFAULT_SLAVE_PRIORITY 100
#define REDIS_REPL_TIMEOUT 60
#define REDIS_REPL_PING_SLAVE_PERIOD 10
-
#define REDIS_RUN_ID_SIZE 40
#define REDIS_OPS_SEC_SAMPLES 16
#define REDIS_CMD_NOSCRIPT 64 /* "s" flag */
#define REDIS_CMD_RANDOM 128 /* "R" flag */
#define REDIS_CMD_SORT_FOR_SCRIPT 256 /* "S" flag */
+#define REDIS_CMD_LOADING 512 /* "l" flag */
+#define REDIS_CMD_STALE 1024 /* "t" flag */
+#define REDIS_CMD_SKIP_MONITOR 2048 /* "M" flag */
/* Object types */
#define REDIS_STRING 0
#define REDIS_AOF_WAIT_REWRITE 2 /* AOF waits rewrite to start appending */
/* Client flags */
-#define REDIS_SLAVE 1 /* This client is a slave server */
-#define REDIS_MASTER 2 /* This client is a master server */
-#define REDIS_MONITOR 4 /* This client is a slave monitor, see MONITOR */
-#define REDIS_MULTI 8 /* This client is in a MULTI context */
-#define REDIS_BLOCKED 16 /* The client is waiting in a blocking operation */
-#define REDIS_DIRTY_CAS 64 /* Watched keys modified. EXEC will fail. */
-#define REDIS_CLOSE_AFTER_REPLY 128 /* Close after writing entire reply. */
-#define REDIS_UNBLOCKED 256 /* This client was unblocked and is stored in
- 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 */
+#define REDIS_SLAVE (1<<0) /* This client is a slave server */
+#define REDIS_MASTER (1<<1) /* This client is a master server */
+#define REDIS_MONITOR (1<<2) /* This client is a slave monitor, see MONITOR */
+#define REDIS_MULTI (1<<3) /* This client is in a MULTI context */
+#define REDIS_BLOCKED (1<<4) /* The client is waiting in a blocking operation */
+#define REDIS_DIRTY_CAS (1<<5) /* Watched keys modified. EXEC will fail. */
+#define REDIS_CLOSE_AFTER_REPLY (1<<6) /* Close after writing entire reply. */
+#define REDIS_UNBLOCKED (1<<7) /* This client was unblocked and is stored in
+ server.unblocked_clients */
+#define REDIS_LUA_CLIENT (1<<8) /* This is a non connected client used by Lua */
+#define REDIS_ASKING (1<<9) /* Client issued the ASKING command */
+#define REDIS_CLOSE_ASAP (1<<10)/* Close this client ASAP */
+#define REDIS_UNIX_SOCKET (1<<11) /* Client connected via Unix domain socket */
+#define REDIS_DIRTY_EXEC (1<<12) /* EXEC will fail for errors while queueing */
/* Client request types */
#define REDIS_REQ_INLINE 1
#define REDIS_REPL_NONE 0 /* No active replication */
#define REDIS_REPL_CONNECT 1 /* Must connect to master */
#define REDIS_REPL_CONNECTING 2 /* Connecting to master */
-#define REDIS_REPL_TRANSFER 3 /* Receiving .rdb from master */
-#define REDIS_REPL_CONNECTED 4 /* Connected to master */
+#define REDIS_REPL_RECEIVE_PONG 3 /* Wait for PING reply */
+#define REDIS_REPL_TRANSFER 4 /* Receiving .rdb from master */
+#define REDIS_REPL_CONNECTED 5 /* Connected to master */
/* Synchronous read timeout - slave side */
#define REDIS_REPL_SYNCIO_TIMEOUT 5
#define REDIS_PROPAGATE_AOF 1
#define REDIS_PROPAGATE_REPL 2
+/* Using the following macro you can run code inside serverCron() with the
+ * specified period, specified in milliseconds.
+ * The actual resolution depends on REDIS_HZ. */
+#define run_with_period(_ms_) if (!(server.cronloops%((_ms_)/(1000/REDIS_HZ))))
+
/* 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)))
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 *ready_keys; /* Blocked keys that received a PUSH */
dict *watched_keys; /* WATCHED keys for MULTI/EXEC CAS */
int id;
} redisDb;
} multiState;
typedef struct blockingState {
- robj **keys; /* The key we are waiting to terminate a blocking
+ dict *keys; /* The keys 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;
+/* The following structure represents a node in the server.ready_keys list,
+ * where we accumulate all the keys that had clients blocked with a blocking
+ * operation such as B[LR]POP, but received new data in the context of the
+ * last executed command.
+ *
+ * After the execution of every command or script, we run this list to check
+ * if as a result we should serve data to clients blocked, unblocking them.
+ * Note that server.ready_keys will not have duplicates as there dictionary
+ * also called ready_keys in every structure representing a Redis database,
+ * where we make sure to remember if a given key was already added in the
+ * server.ready_keys list. */
+typedef struct readyList {
+ redisDb *db;
+ robj *key;
+} readyList;
+
/* With multiplexing we need to take per-clinet state.
* Clients are taken in a liked list. */
typedef struct redisClient {
*colon, *nullbulk, *nullmultibulk, *queued,
*emptymultibulk, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
*outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *bgsaveerr,
- *masterdownerr, *roslaveerr,
+ *masterdownerr, *roslaveerr, *execaborterr,
*oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk,
*unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *rpop, *lpop,
+ *lpush,
*select[REDIS_SHARED_SELECT_CMDS],
*integers[REDIS_SHARED_INTEGERS],
*mbulkhdr[REDIS_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
struct redisServer {
/* General */
redisDb *db;
- dict *commands; /* Command table hahs table */
+ dict *commands; /* Command table hash table */
aeEventLoop *el;
unsigned lruclock:22; /* Clock incrementing every minute, for LRU */
unsigned lruclock_padding:10;
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. */
+ int sentinel_mode; /* True if this instance is a Sentinel. */
/* Networking */
int port; /* TCP listening port */
char *bindaddr; /* Bind address or NULL */
off_t loading_loaded_bytes;
time_t loading_start_time;
/* Fast pointers to often looked up command */
- struct redisCommand *delCommand, *multiCommand, *lpushCommand;
+ struct redisCommand *delCommand, *multiCommand, *lpushCommand, *lpopCommand,
+ *rpopCommand;
/* Fields used only for stats */
time_t stat_starttime; /* Server start time */
long long stat_numcommands; /* Number of processed commands */
time_t aof_last_fsync; /* UNIX time of last fsync() */
time_t aof_rewrite_time_last; /* Time used by last AOF rewrite run. */
time_t aof_rewrite_time_start; /* Current AOF rewrite start time. */
+ int aof_lastbgrewrite_status; /* REDIS_OK or REDIS_ERR */
unsigned long aof_delayed_fsync; /* delayed AOF fsync() counter */
/* RDB persistence */
long long dirty; /* Changes to DB from the last save */
char *masterauth; /* AUTH with this password with master */
char *masterhost; /* Hostname of master */
int masterport; /* Port of master */
- int repl_ping_slave_period; /* Master pings the salve every N seconds */
+ int repl_ping_slave_period; /* Master pings the slave every N seconds */
int repl_timeout; /* Timeout after N seconds of master idle */
redisClient *master; /* Client that is master for this slave */
int repl_syncio_timeout; /* Timeout for synchronous I/O calls */
int repl_state; /* Replication status if the instance is a slave */
- off_t repl_transfer_left; /* Bytes left reading .rdb */
+ off_t repl_transfer_size; /* Size of RDB to read from master during sync. */
+ off_t repl_transfer_read; /* Amount of RDB read from master during sync. */
+ off_t repl_transfer_last_fsync_off; /* Offset when we fsync-ed last time. */
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 */
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 */
+ int slave_priority; /* Reported in INFO and used by Sentinel. */
/* Limits */
unsigned int maxclients; /* Max number of simultaneous clients */
unsigned long long maxmemory; /* Max number of memory bytes to use */
/* Blocked clients */
unsigned int bpop_blocked_clients; /* Number of clients blocked by lists */
list *unblocked_clients; /* list of clients to unblock before next loop */
+ list *ready_keys; /* List of readyList structures for BLPOP & co */
/* 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;
extern dictType setDictType;
extern dictType zsetDictType;
extern dictType dbDictType;
+extern dictType shaScriptObjectDictType;
extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
extern dictType hashDictType;
void listTypeDelete(listTypeEntry *entry);
void listTypeConvert(robj *subject, int enc);
void unblockClientWaitingData(redisClient *c);
-int handleClientsWaitingListPush(redisClient *c, robj *key, robj *ele);
+void handleClientsBlockedOnLists(void);
void popGenericCommand(redisClient *c, int where);
/* MULTI/EXEC/WATCH... */
void touchWatchedKey(redisDb *db, robj *key);
void touchWatchedKeysOnFlush(int dbid);
void discardTransaction(redisClient *c);
+void flagTransaction(redisClient *c);
/* Redis object implementation */
void decrRefCount(void *o);
int *renameGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys, int flags);
+/* Sentinel */
+void initSentinelConfig(void);
+void initSentinel(void);
+void sentinelTimer(void);
+char *sentinelHandleConfiguration(char **argv, int argc);
+
/* Scripting */
void scriptingInit(void);
void disableWatchdog(void);
void watchdogScheduleSignal(int period);
void redisLogHexDump(int level, char *descr, void *value, size_t len);
+
+#define redisDebug(fmt, ...) \
+ printf("DEBUG %s:%d > " fmt "\n", __FILE__, __LINE__, __VA_ARGS__)
+#define redisDebugMark() \
+ printf("-- MARK %s:%d --\n", __FILE__, __LINE__)
+
#endif
projects / redis.git / blobdiff