2453 lines
112 KiB
C
2453 lines
112 KiB
C
/*
|
||
* 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
|
||
|
||
#include "fmacros.h"
|
||
#include "config.h"
|
||
#include "solarisfixes.h"
|
||
#include "rio.h"
|
||
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <time.h>
|
||
#include <limits.h>
|
||
#include <unistd.h>
|
||
#include <errno.h>
|
||
#include <inttypes.h>
|
||
#include <pthread.h>
|
||
#include <syslog.h>
|
||
#include <netinet/in.h>
|
||
#include <sys/socket.h>
|
||
#include <lua.h>
|
||
#include <signal.h>
|
||
|
||
#ifdef HAVE_LIBSYSTEMD
|
||
#include <systemd/sd-daemon.h>
|
||
#endif
|
||
|
||
typedef long long mstime_t; /* millisecond time type. */
|
||
typedef long long ustime_t; /* microsecond time type. */
|
||
|
||
#include "ae.h" /* Event driven programming library */
|
||
#include "sds.h" /* Dynamic safe strings */
|
||
#include "dict.h" /* Hash tables */
|
||
#include "adlist.h" /* Linked lists */
|
||
#include "zmalloc.h" /* total memory usage aware version of malloc/free */
|
||
#include "anet.h" /* Networking the easy way */
|
||
#include "ziplist.h" /* Compact list data structure */
|
||
#include "intset.h" /* Compact integer set structure */
|
||
#include "version.h" /* Version macro */
|
||
#include "util.h" /* Misc functions useful in many places */
|
||
#include "latency.h" /* Latency monitor API */
|
||
#include "sparkline.h" /* ASCII graphs API */
|
||
#include "quicklist.h" /* Lists are encoded as linked lists of
|
||
N-elements flat arrays */
|
||
#include "rax.h" /* Radix tree */
|
||
#include "connection.h" /* Connection abstraction */
|
||
|
||
#define REDISMODULE_CORE 1
|
||
#include "redismodule.h" /* Redis modules API defines. */
|
||
|
||
/* Following includes allow test functions to be called from Redis main() */
|
||
#include "zipmap.h"
|
||
#include "sha1.h"
|
||
#include "endianconv.h"
|
||
#include "crc64.h"
|
||
|
||
/* Error codes */
|
||
#define C_OK 0
|
||
#define C_ERR -1
|
||
|
||
/* Static server configuration */
|
||
#define CONFIG_DEFAULT_HZ 10 /* Time interrupt calls/sec. */
|
||
#define CONFIG_MIN_HZ 1
|
||
#define CONFIG_MAX_HZ 500
|
||
#define MAX_CLIENTS_PER_CLOCK_TICK 200 /* HZ is adapted based on that. */
|
||
#define CONFIG_MAX_LINE 1024
|
||
#define CRON_DBS_PER_CALL 16
|
||
#define NET_MAX_WRITES_PER_EVENT (1024*64)
|
||
#define PROTO_SHARED_SELECT_CMDS 10
|
||
#define OBJ_SHARED_INTEGERS 10000
|
||
#define OBJ_SHARED_BULKHDR_LEN 32
|
||
#define LOG_MAX_LEN 1024 /* Default maximum length of syslog messages.*/
|
||
#define AOF_REWRITE_ITEMS_PER_CMD 64
|
||
#define AOF_READ_DIFF_INTERVAL_BYTES (1024*10)
|
||
#define CONFIG_AUTHPASS_MAX_LEN 512
|
||
#define CONFIG_RUN_ID_SIZE 40
|
||
#define RDB_EOF_MARK_SIZE 40
|
||
#define CONFIG_REPL_BACKLOG_MIN_SIZE (1024*16) /* 16k */
|
||
#define CONFIG_BGSAVE_RETRY_DELAY 5 /* Wait a few secs before trying again. */
|
||
#define CONFIG_DEFAULT_PID_FILE "/var/run/redis.pid"
|
||
#define CONFIG_DEFAULT_CLUSTER_CONFIG_FILE "nodes.conf"
|
||
#define CONFIG_DEFAULT_UNIX_SOCKET_PERM 0
|
||
#define CONFIG_DEFAULT_LOGFILE ""
|
||
#define NET_IP_STR_LEN 46 /* INET6_ADDRSTRLEN is 46, but we need to be sure */
|
||
#define NET_PEER_ID_LEN (NET_IP_STR_LEN+32) /* Must be enough for ip:port */
|
||
#define CONFIG_BINDADDR_MAX 16
|
||
#define CONFIG_MIN_RESERVED_FDS 32
|
||
|
||
#define ACTIVE_EXPIRE_CYCLE_SLOW 0
|
||
#define ACTIVE_EXPIRE_CYCLE_FAST 1
|
||
|
||
/* Children process will exit with this status code to signal that the
|
||
* process terminated without an error: this is useful in order to kill
|
||
* a saving child (RDB or AOF one), without triggering in the parent the
|
||
* write protection that is normally turned on on write errors.
|
||
* Usually children that are terminated with SIGUSR1 will exit with this
|
||
* special code. */
|
||
#define SERVER_CHILD_NOERROR_RETVAL 255
|
||
|
||
/* Instantaneous metrics tracking. */
|
||
#define STATS_METRIC_SAMPLES 16 /* Number of samples per metric. */
|
||
#define STATS_METRIC_COMMAND 0 /* Number of commands executed. */
|
||
#define STATS_METRIC_NET_INPUT 1 /* Bytes read to network .*/
|
||
#define STATS_METRIC_NET_OUTPUT 2 /* Bytes written to network. */
|
||
#define STATS_METRIC_COUNT 3
|
||
|
||
/* Protocol and I/O related defines */
|
||
#define PROTO_MAX_QUERYBUF_LEN (1024*1024*1024) /* 1GB max query buffer. */
|
||
#define PROTO_IOBUF_LEN (1024*16) /* Generic I/O buffer size */
|
||
#define PROTO_REPLY_CHUNK_BYTES (16*1024) /* 16k output buffer */
|
||
#define PROTO_INLINE_MAX_SIZE (1024*64) /* Max size of inline reads */
|
||
#define PROTO_MBULK_BIG_ARG (1024*32)
|
||
#define LONG_STR_SIZE 21 /* Bytes needed for long -> str + '\0' */
|
||
#define REDIS_AUTOSYNC_BYTES (1024*1024*32) /* fdatasync every 32MB */
|
||
|
||
#define LIMIT_PENDING_QUERYBUF (4*1024*1024) /* 4mb */
|
||
|
||
/* When configuring the server eventloop, we setup it so that the total number
|
||
* of file descriptors we can handle are server.maxclients + RESERVED_FDS +
|
||
* a few more to stay safe. Since RESERVED_FDS defaults to 32, we add 96
|
||
* in order to make sure of not over provisioning more than 128 fds. */
|
||
#define CONFIG_FDSET_INCR (CONFIG_MIN_RESERVED_FDS+96)
|
||
|
||
/* Hash table parameters */
|
||
#define HASHTABLE_MIN_FILL 10 /* Minimal hash table fill 10% */
|
||
|
||
/* Command flags. Please check the command table defined in the redis.c file
|
||
* for more information about the meaning of every flag. */
|
||
#define CMD_WRITE (1ULL<<0) /* "write" flag */
|
||
#define CMD_READONLY (1ULL<<1) /* "read-only" flag */
|
||
#define CMD_DENYOOM (1ULL<<2) /* "use-memory" flag */
|
||
#define CMD_MODULE (1ULL<<3) /* Command exported by module. */
|
||
#define CMD_ADMIN (1ULL<<4) /* "admin" flag */
|
||
#define CMD_PUBSUB (1ULL<<5) /* "pub-sub" flag */
|
||
#define CMD_NOSCRIPT (1ULL<<6) /* "no-script" flag */
|
||
#define CMD_RANDOM (1ULL<<7) /* "random" flag */
|
||
#define CMD_SORT_FOR_SCRIPT (1ULL<<8) /* "to-sort" flag */
|
||
#define CMD_LOADING (1ULL<<9) /* "ok-loading" flag */
|
||
#define CMD_STALE (1ULL<<10) /* "ok-stale" flag */
|
||
#define CMD_SKIP_MONITOR (1ULL<<11) /* "no-monitor" flag */
|
||
#define CMD_SKIP_SLOWLOG (1ULL<<12) /* "no-slowlog" flag */
|
||
#define CMD_ASKING (1ULL<<13) /* "cluster-asking" flag */
|
||
#define CMD_FAST (1ULL<<14) /* "fast" flag */
|
||
#define CMD_NO_AUTH (1ULL<<15) /* "no-auth" flag */
|
||
|
||
/* Command flags used by the module system. */
|
||
#define CMD_MODULE_GETKEYS (1ULL<<16) /* Use the modules getkeys interface. */
|
||
#define CMD_MODULE_NO_CLUSTER (1ULL<<17) /* Deny on Redis Cluster. */
|
||
|
||
/* Command flags that describe ACLs categories. */
|
||
#define CMD_CATEGORY_KEYSPACE (1ULL<<18)
|
||
#define CMD_CATEGORY_READ (1ULL<<19)
|
||
#define CMD_CATEGORY_WRITE (1ULL<<20)
|
||
#define CMD_CATEGORY_SET (1ULL<<21)
|
||
#define CMD_CATEGORY_SORTEDSET (1ULL<<22)
|
||
#define CMD_CATEGORY_LIST (1ULL<<23)
|
||
#define CMD_CATEGORY_HASH (1ULL<<24)
|
||
#define CMD_CATEGORY_STRING (1ULL<<25)
|
||
#define CMD_CATEGORY_BITMAP (1ULL<<26)
|
||
#define CMD_CATEGORY_HYPERLOGLOG (1ULL<<27)
|
||
#define CMD_CATEGORY_GEO (1ULL<<28)
|
||
#define CMD_CATEGORY_STREAM (1ULL<<29)
|
||
#define CMD_CATEGORY_PUBSUB (1ULL<<30)
|
||
#define CMD_CATEGORY_ADMIN (1ULL<<31)
|
||
#define CMD_CATEGORY_FAST (1ULL<<32)
|
||
#define CMD_CATEGORY_SLOW (1ULL<<33)
|
||
#define CMD_CATEGORY_BLOCKING (1ULL<<34)
|
||
#define CMD_CATEGORY_DANGEROUS (1ULL<<35)
|
||
#define CMD_CATEGORY_CONNECTION (1ULL<<36)
|
||
#define CMD_CATEGORY_TRANSACTION (1ULL<<37)
|
||
#define CMD_CATEGORY_SCRIPTING (1ULL<<38)
|
||
|
||
/* AOF states */
|
||
#define AOF_OFF 0 /* AOF is off */
|
||
#define AOF_ON 1 /* AOF is on */
|
||
#define AOF_WAIT_REWRITE 2 /* AOF waits rewrite to start appending */
|
||
|
||
/* Client flags */
|
||
#define CLIENT_SLAVE (1<<0) /* This client is a repliaca */
|
||
#define CLIENT_MASTER (1<<1) /* This client is a master */
|
||
#define CLIENT_MONITOR (1<<2) /* This client is a slave monitor, see MONITOR */
|
||
#define CLIENT_MULTI (1<<3) /* This client is in a MULTI context */
|
||
#define CLIENT_BLOCKED (1<<4) /* The client is waiting in a blocking operation */
|
||
#define CLIENT_DIRTY_CAS (1<<5) /* Watched keys modified. EXEC will fail. */
|
||
#define CLIENT_CLOSE_AFTER_REPLY (1<<6) /* Close after writing entire reply. */
|
||
#define CLIENT_UNBLOCKED (1<<7) /* This client was unblocked and is stored in
|
||
server.unblocked_clients */
|
||
#define CLIENT_LUA (1<<8) /* This is a non connected client used by Lua */
|
||
#define CLIENT_ASKING (1<<9) /* Client issued the ASKING command */
|
||
#define CLIENT_CLOSE_ASAP (1<<10)/* Close this client ASAP */
|
||
#define CLIENT_UNIX_SOCKET (1<<11) /* Client connected via Unix domain socket */
|
||
#define CLIENT_DIRTY_EXEC (1<<12) /* EXEC will fail for errors while queueing */
|
||
#define CLIENT_MASTER_FORCE_REPLY (1<<13) /* Queue replies even if is master */
|
||
#define CLIENT_FORCE_AOF (1<<14) /* Force AOF propagation of current cmd. */
|
||
#define CLIENT_FORCE_REPL (1<<15) /* Force replication of current cmd. */
|
||
#define CLIENT_PRE_PSYNC (1<<16) /* Instance don't understand PSYNC. */
|
||
#define CLIENT_READONLY (1<<17) /* Cluster client is in read-only state. */
|
||
#define CLIENT_PUBSUB (1<<18) /* Client is in Pub/Sub mode. */
|
||
#define CLIENT_PREVENT_AOF_PROP (1<<19) /* Don't propagate to AOF. */
|
||
#define CLIENT_PREVENT_REPL_PROP (1<<20) /* Don't propagate to slaves. */
|
||
#define CLIENT_PREVENT_PROP (CLIENT_PREVENT_AOF_PROP|CLIENT_PREVENT_REPL_PROP)
|
||
#define CLIENT_PENDING_WRITE (1<<21) /* Client has output to send but a write
|
||
handler is yet not installed. */
|
||
#define CLIENT_REPLY_OFF (1<<22) /* Don't send replies to client. */
|
||
#define CLIENT_REPLY_SKIP_NEXT (1<<23) /* Set CLIENT_REPLY_SKIP for next cmd */
|
||
#define CLIENT_REPLY_SKIP (1<<24) /* Don't send just this reply. */
|
||
#define CLIENT_LUA_DEBUG (1<<25) /* Run EVAL in debug mode. */
|
||
#define CLIENT_LUA_DEBUG_SYNC (1<<26) /* EVAL debugging without fork() */
|
||
#define CLIENT_MODULE (1<<27) /* Non connected client used by some module. */
|
||
#define CLIENT_PROTECTED (1<<28) /* Client should not be freed for now. */
|
||
#define CLIENT_PENDING_READ (1<<29) /* The client has pending reads and was put
|
||
in the list of clients we can read
|
||
from. */
|
||
#define CLIENT_PENDING_COMMAND (1<<30) /* Used in threaded I/O to signal after
|
||
we return single threaded that the
|
||
client has already pending commands
|
||
to be executed. */
|
||
#define CLIENT_TRACKING (1ULL<<31) /* Client enabled keys tracking in order to
|
||
perform client side caching. */
|
||
#define CLIENT_TRACKING_BROKEN_REDIR (1ULL<<32) /* Target client is invalid. */
|
||
#define CLIENT_TRACKING_BCAST (1ULL<<33) /* Tracking in BCAST mode. */
|
||
#define CLIENT_TRACKING_OPTIN (1ULL<<34) /* Tracking in opt-in mode. */
|
||
#define CLIENT_TRACKING_OPTOUT (1ULL<<35) /* Tracking in opt-out mode. */
|
||
#define CLIENT_TRACKING_CACHING (1ULL<<36) /* CACHING yes/no was given,
|
||
depending on optin/optout mode. */
|
||
#define CLIENT_TRACKING_NOLOOP (1ULL<<37) /* Don't send invalidation messages
|
||
about writes performed by myself.*/
|
||
#define CLIENT_IN_TO_TABLE (1ULL<<38) /* This client is in the timeout table. */
|
||
#define CLIENT_PROTOCOL_ERROR (1ULL<<39) /* Protocol error chatting with it. */
|
||
|
||
/* Client block type (btype field in client structure)
|
||
* if CLIENT_BLOCKED flag is set. */
|
||
#define BLOCKED_NONE 0 /* Not blocked, no CLIENT_BLOCKED flag set. */
|
||
#define BLOCKED_LIST 1 /* BLPOP & co. */
|
||
#define BLOCKED_WAIT 2 /* WAIT for synchronous replication. */
|
||
#define BLOCKED_MODULE 3 /* Blocked by a loadable module. */
|
||
#define BLOCKED_STREAM 4 /* XREAD. */
|
||
#define BLOCKED_ZSET 5 /* BZPOP et al. */
|
||
#define BLOCKED_NUM 6 /* Number of blocked states. */
|
||
|
||
/* Client request types */
|
||
#define PROTO_REQ_INLINE 1
|
||
#define PROTO_REQ_MULTIBULK 2
|
||
|
||
/* Client classes for client limits, currently used only for
|
||
* the max-client-output-buffer limit implementation. */
|
||
#define CLIENT_TYPE_NORMAL 0 /* Normal req-reply clients + MONITORs */
|
||
#define CLIENT_TYPE_SLAVE 1 /* Slaves. */
|
||
#define CLIENT_TYPE_PUBSUB 2 /* Clients subscribed to PubSub channels. */
|
||
#define CLIENT_TYPE_MASTER 3 /* Master. */
|
||
#define CLIENT_TYPE_COUNT 4 /* Total number of client types. */
|
||
#define CLIENT_TYPE_OBUF_COUNT 3 /* Number of clients to expose to output
|
||
buffer configuration. Just the first
|
||
three: normal, slave, pubsub. */
|
||
|
||
/* Slave replication state. Used in server.repl_state for slaves to remember
|
||
* what to do next. */
|
||
#define REPL_STATE_NONE 0 /* No active replication */
|
||
#define REPL_STATE_CONNECT 1 /* Must connect to master */
|
||
#define REPL_STATE_CONNECTING 2 /* Connecting to master */
|
||
/* --- Handshake states, must be ordered --- */
|
||
#define REPL_STATE_RECEIVE_PONG 3 /* Wait for PING reply */
|
||
#define REPL_STATE_SEND_AUTH 4 /* Send AUTH to master */
|
||
#define REPL_STATE_RECEIVE_AUTH 5 /* Wait for AUTH reply */
|
||
#define REPL_STATE_SEND_PORT 6 /* Send REPLCONF listening-port */
|
||
#define REPL_STATE_RECEIVE_PORT 7 /* Wait for REPLCONF reply */
|
||
#define REPL_STATE_SEND_IP 8 /* Send REPLCONF ip-address */
|
||
#define REPL_STATE_RECEIVE_IP 9 /* Wait for REPLCONF reply */
|
||
#define REPL_STATE_SEND_CAPA 10 /* Send REPLCONF capa */
|
||
#define REPL_STATE_RECEIVE_CAPA 11 /* Wait for REPLCONF reply */
|
||
#define REPL_STATE_SEND_PSYNC 12 /* Send PSYNC */
|
||
#define REPL_STATE_RECEIVE_PSYNC 13 /* Wait for PSYNC reply */
|
||
/* --- End of handshake states --- */
|
||
#define REPL_STATE_TRANSFER 14 /* Receiving .rdb from master */
|
||
#define REPL_STATE_CONNECTED 15 /* Connected to master */
|
||
|
||
/* State of slaves from the POV of the master. Used in client->replstate.
|
||
* In SEND_BULK and ONLINE state the slave receives new updates
|
||
* in its output queue. In the WAIT_BGSAVE states instead the server is waiting
|
||
* to start the next background saving in order to send updates to it. */
|
||
#define SLAVE_STATE_WAIT_BGSAVE_START 6 /* We need to produce a new RDB file. */
|
||
#define SLAVE_STATE_WAIT_BGSAVE_END 7 /* Waiting RDB file creation to finish. */
|
||
#define SLAVE_STATE_SEND_BULK 8 /* Sending RDB file to slave. */
|
||
#define SLAVE_STATE_ONLINE 9 /* RDB file transmitted, sending just updates. */
|
||
|
||
/* Slave capabilities. */
|
||
#define SLAVE_CAPA_NONE 0
|
||
#define SLAVE_CAPA_EOF (1<<0) /* Can parse the RDB EOF streaming format. */
|
||
#define SLAVE_CAPA_PSYNC2 (1<<1) /* Supports PSYNC2 protocol. */
|
||
|
||
/* Synchronous read timeout - slave side */
|
||
#define CONFIG_REPL_SYNCIO_TIMEOUT 5
|
||
|
||
/* List related stuff */
|
||
#define LIST_HEAD 0
|
||
#define LIST_TAIL 1
|
||
#define ZSET_MIN 0
|
||
#define ZSET_MAX 1
|
||
|
||
/* Sort operations */
|
||
#define SORT_OP_GET 0
|
||
|
||
/* Log levels */
|
||
#define LL_DEBUG 0
|
||
#define LL_VERBOSE 1
|
||
#define LL_NOTICE 2
|
||
#define LL_WARNING 3
|
||
#define LL_RAW (1<<10) /* Modifier to log without timestamp */
|
||
|
||
/* Supervision options */
|
||
#define SUPERVISED_NONE 0
|
||
#define SUPERVISED_AUTODETECT 1
|
||
#define SUPERVISED_SYSTEMD 2
|
||
#define SUPERVISED_UPSTART 3
|
||
|
||
/* Anti-warning macro... */
|
||
#define UNUSED(V) ((void) V)
|
||
|
||
#define ZSKIPLIST_MAXLEVEL 32 /* Should be enough for 2^64 elements */
|
||
#define ZSKIPLIST_P 0.25 /* Skiplist P = 1/4 */
|
||
|
||
/* Append only defines */
|
||
#define AOF_FSYNC_NO 0
|
||
#define AOF_FSYNC_ALWAYS 1
|
||
#define AOF_FSYNC_EVERYSEC 2
|
||
|
||
/* Replication diskless load defines */
|
||
#define REPL_DISKLESS_LOAD_DISABLED 0
|
||
#define REPL_DISKLESS_LOAD_WHEN_DB_EMPTY 1
|
||
#define REPL_DISKLESS_LOAD_SWAPDB 2
|
||
|
||
/* Sets operations codes */
|
||
#define SET_OP_UNION 0
|
||
#define SET_OP_DIFF 1
|
||
#define SET_OP_INTER 2
|
||
|
||
/* Redis maxmemory strategies. Instead of using just incremental number
|
||
* for this defines, we use a set of flags so that testing for certain
|
||
* properties common to multiple policies is faster. */
|
||
#define MAXMEMORY_FLAG_LRU (1<<0)
|
||
#define MAXMEMORY_FLAG_LFU (1<<1)
|
||
#define MAXMEMORY_FLAG_ALLKEYS (1<<2)
|
||
#define MAXMEMORY_FLAG_NO_SHARED_INTEGERS \
|
||
(MAXMEMORY_FLAG_LRU|MAXMEMORY_FLAG_LFU)
|
||
|
||
#define MAXMEMORY_VOLATILE_LRU ((0<<8)|MAXMEMORY_FLAG_LRU)
|
||
#define MAXMEMORY_VOLATILE_LFU ((1<<8)|MAXMEMORY_FLAG_LFU)
|
||
#define MAXMEMORY_VOLATILE_TTL (2<<8)
|
||
#define MAXMEMORY_VOLATILE_RANDOM (3<<8)
|
||
#define MAXMEMORY_ALLKEYS_LRU ((4<<8)|MAXMEMORY_FLAG_LRU|MAXMEMORY_FLAG_ALLKEYS)
|
||
#define MAXMEMORY_ALLKEYS_LFU ((5<<8)|MAXMEMORY_FLAG_LFU|MAXMEMORY_FLAG_ALLKEYS)
|
||
#define MAXMEMORY_ALLKEYS_RANDOM ((6<<8)|MAXMEMORY_FLAG_ALLKEYS)
|
||
#define MAXMEMORY_NO_EVICTION (7<<8)
|
||
|
||
/* Units */
|
||
#define UNIT_SECONDS 0
|
||
#define UNIT_MILLISECONDS 1
|
||
|
||
/* SHUTDOWN flags */
|
||
#define SHUTDOWN_NOFLAGS 0 /* No flags. */
|
||
#define SHUTDOWN_SAVE 1 /* Force SAVE on SHUTDOWN even if no save
|
||
points are configured. */
|
||
#define SHUTDOWN_NOSAVE 2 /* Don't SAVE on SHUTDOWN. */
|
||
|
||
/* Command call flags, see call() function */
|
||
#define CMD_CALL_NONE 0
|
||
#define CMD_CALL_SLOWLOG (1<<0)
|
||
#define CMD_CALL_STATS (1<<1)
|
||
#define CMD_CALL_PROPAGATE_AOF (1<<2)
|
||
#define CMD_CALL_PROPAGATE_REPL (1<<3)
|
||
#define CMD_CALL_PROPAGATE (CMD_CALL_PROPAGATE_AOF|CMD_CALL_PROPAGATE_REPL)
|
||
#define CMD_CALL_FULL (CMD_CALL_SLOWLOG | CMD_CALL_STATS | CMD_CALL_PROPAGATE)
|
||
#define CMD_CALL_NOWRAP (1<<4) /* Don't wrap also propagate array into
|
||
MULTI/EXEC: the caller will handle it. */
|
||
|
||
/* Command propagation flags, see propagate() function */
|
||
#define PROPAGATE_NONE 0
|
||
#define PROPAGATE_AOF 1
|
||
#define PROPAGATE_REPL 2
|
||
|
||
/* RDB active child save type. */
|
||
#define RDB_CHILD_TYPE_NONE 0
|
||
#define RDB_CHILD_TYPE_DISK 1 /* RDB is written to disk. */
|
||
#define RDB_CHILD_TYPE_SOCKET 2 /* RDB is written to slave socket. */
|
||
|
||
/* Keyspace changes notification classes. Every class is associated with a
|
||
* character for configuration purposes. */
|
||
#define NOTIFY_KEYSPACE (1<<0) /* K */
|
||
#define NOTIFY_KEYEVENT (1<<1) /* E */
|
||
#define NOTIFY_GENERIC (1<<2) /* g */
|
||
#define NOTIFY_STRING (1<<3) /* $ */
|
||
#define NOTIFY_LIST (1<<4) /* l */
|
||
#define NOTIFY_SET (1<<5) /* s */
|
||
#define NOTIFY_HASH (1<<6) /* h */
|
||
#define NOTIFY_ZSET (1<<7) /* z */
|
||
#define NOTIFY_EXPIRED (1<<8) /* x */
|
||
#define NOTIFY_EVICTED (1<<9) /* e */
|
||
#define NOTIFY_STREAM (1<<10) /* t */
|
||
#define NOTIFY_KEY_MISS (1<<11) /* m (Note: This one is excluded from NOTIFY_ALL on purpose) */
|
||
#define NOTIFY_ALL (NOTIFY_GENERIC | NOTIFY_STRING | NOTIFY_LIST | NOTIFY_SET | NOTIFY_HASH | NOTIFY_ZSET | NOTIFY_EXPIRED | NOTIFY_EVICTED | NOTIFY_STREAM) /* A flag */
|
||
|
||
/* Get the first bind addr or NULL */
|
||
#define NET_FIRST_BIND_ADDR (server.bindaddr_count ? server.bindaddr[0] : NULL)
|
||
|
||
/* Using the following macro you can run code inside serverCron() with the
|
||
* specified period, specified in milliseconds.
|
||
* The actual resolution depends on server.hz. */
|
||
#define run_with_period(_ms_) if ((_ms_ <= 1000/server.hz) || !(server.cronloops%((_ms_)/(1000/server.hz))))
|
||
|
||
/* We can print the stacktrace, so our assert is defined this way: */
|
||
#define serverAssertWithInfo(_c,_o,_e) ((_e)?(void)0 : (_serverAssertWithInfo(_c,_o,#_e,__FILE__,__LINE__),_exit(1)))
|
||
#define serverAssert(_e) ((_e)?(void)0 : (_serverAssert(#_e,__FILE__,__LINE__),_exit(1)))
|
||
#define serverPanic(...) _serverPanic(__FILE__,__LINE__,__VA_ARGS__),_exit(1)
|
||
|
||
/*-----------------------------------------------------------------------------
|
||
* Data types
|
||
*----------------------------------------------------------------------------*/
|
||
|
||
/* A redis object, that is a type able to hold a string / list / set */
|
||
|
||
/* The actual Redis Object ，占用四字节*/
|
||
#define OBJ_STRING 0 /* String 对象类型 */
|
||
#define OBJ_LIST 1 /* List 对象类型. */
|
||
#define OBJ_SET 2 /* Set 对象类型. */
|
||
#define OBJ_ZSET 3 /* Sorted set 对象类型. */
|
||
#define OBJ_HASH 4 /* Hash 独享类型. */
|
||
|
||
/* The "module" object type is a special one that signals that the object
|
||
* is one directly managed by a Redis module. In this case the value points
|
||
* to a moduleValue struct, which contains the object value (which is only
|
||
* handled by the module itself) and the RedisModuleType struct which lists
|
||
* function pointers in order to serialize, deserialize, AOF-rewrite and
|
||
* free the object.
|
||
*
|
||
* Inside the RDB file, module types are encoded as OBJ_MODULE followed
|
||
* by a 64 bit module type ID, which has a 54 bits module-specific signature
|
||
* in order to dispatch the loading to the right module, plus a 10 bits
|
||
* encoding version. */
|
||
#define OBJ_MODULE 5 /* Module 对象类型. */
|
||
#define OBJ_STREAM 6 /* Stream 对象类型. */
|
||
|
||
/* Extract encver / signature from a module type ID. */
|
||
#define REDISMODULE_TYPE_ENCVER_BITS 10
|
||
#define REDISMODULE_TYPE_ENCVER_MASK ((1<<REDISMODULE_TYPE_ENCVER_BITS)-1)
|
||
#define REDISMODULE_TYPE_ENCVER(id) (id & REDISMODULE_TYPE_ENCVER_MASK)
|
||
#define REDISMODULE_TYPE_SIGN(id) ((id & ~((uint64_t)REDISMODULE_TYPE_ENCVER_MASK)) >>REDISMODULE_TYPE_ENCVER_BITS)
|
||
|
||
/* Bit flags for moduleTypeAuxSaveFunc */
|
||
#define REDISMODULE_AUX_BEFORE_RDB (1<<0)
|
||
#define REDISMODULE_AUX_AFTER_RDB (1<<1)
|
||
|
||
struct RedisModule;
|
||
struct RedisModuleIO;
|
||
struct RedisModuleDigest;
|
||
struct RedisModuleCtx;
|
||
struct redisObject;
|
||
|
||
/* Each module type implementation should export a set of methods in order
|
||
* to serialize and deserialize the value in the RDB file, rewrite the AOF
|
||
* log, create the digest for "DEBUG DIGEST", and free the value when a key
|
||
* is deleted. */
|
||
typedef void *(*moduleTypeLoadFunc)(struct RedisModuleIO *io, int encver);
|
||
typedef void (*moduleTypeSaveFunc)(struct RedisModuleIO *io, void *value);
|
||
typedef int (*moduleTypeAuxLoadFunc)(struct RedisModuleIO *rdb, int encver, int when);
|
||
typedef void (*moduleTypeAuxSaveFunc)(struct RedisModuleIO *rdb, int when);
|
||
typedef void (*moduleTypeRewriteFunc)(struct RedisModuleIO *io, struct redisObject *key, void *value);
|
||
typedef void (*moduleTypeDigestFunc)(struct RedisModuleDigest *digest, void *value);
|
||
typedef size_t (*moduleTypeMemUsageFunc)(const void *value);
|
||
typedef void (*moduleTypeFreeFunc)(void *value);
|
||
|
||
/* A callback that is called when the client authentication changes. This
|
||
* needs to be exposed since you can't cast a function pointer to (void *) */
|
||
typedef void (*RedisModuleUserChangedFunc) (uint64_t client_id, void *privdata);
|
||
|
||
|
||
/* The module type, which is referenced in each value of a given type, defines
|
||
* the methods and links to the module exporting the type. */
|
||
typedef struct RedisModuleType {
|
||
uint64_t id; /* Higher 54 bits of type ID + 10 lower bits of encoding ver. */
|
||
struct RedisModule *module;
|
||
moduleTypeLoadFunc rdb_load;
|
||
moduleTypeSaveFunc rdb_save;
|
||
moduleTypeRewriteFunc aof_rewrite;
|
||
moduleTypeMemUsageFunc mem_usage;
|
||
moduleTypeDigestFunc digest;
|
||
moduleTypeFreeFunc free;
|
||
moduleTypeAuxLoadFunc aux_load;
|
||
moduleTypeAuxSaveFunc aux_save;
|
||
int aux_save_triggers;
|
||
char name[10]; /* 9 bytes name + null term. Charset: A-Z a-z 0-9 _- */
|
||
} moduleType;
|
||
|
||
/* In Redis objects 'robj' structures of type OBJ_MODULE, the value pointer
|
||
* is set to the following structure, referencing the moduleType structure
|
||
* in order to work with the value, and at the same time providing a raw
|
||
* pointer to the value, as created by the module commands operating with
|
||
* the module type.
|
||
*
|
||
* So for example in order to free such a value, it is possible to use
|
||
* the following code:
|
||
*
|
||
* if (robj->type == OBJ_MODULE) {
|
||
* moduleValue *mt = robj->ptr;
|
||
* mt->type->free(mt->value);
|
||
* zfree(mt); // We need to release this in-the-middle struct as well.
|
||
* }
|
||
*/
|
||
typedef struct moduleValue {
|
||
moduleType *type;
|
||
void *value;
|
||
} moduleValue;
|
||
|
||
/* This is a wrapper for the 'rio' streams used inside rdb.c in Redis, so that
|
||
* the user does not have to take the total count of the written bytes nor
|
||
* to care about error conditions. */
|
||
typedef struct RedisModuleIO {
|
||
size_t bytes; /* Bytes read / written so far. */
|
||
rio *rio; /* Rio stream. */
|
||
moduleType *type; /* Module type doing the operation. */
|
||
int error; /* True if error condition happened. */
|
||
int ver; /* Module serialization version: 1 (old),
|
||
* 2 (current version with opcodes annotation). */
|
||
struct RedisModuleCtx *ctx; /* Optional context, see RM_GetContextFromIO()*/
|
||
struct redisObject *key; /* Optional name of key processed */
|
||
} RedisModuleIO;
|
||
|
||
/* Macro to initialize an IO context. Note that the 'ver' field is populated
|
||
* inside rdb.c according to the version of the value to load. */
|
||
#define moduleInitIOContext(iovar,mtype,rioptr,keyptr) do { \
|
||
iovar.rio = rioptr; \
|
||
iovar.type = mtype; \
|
||
iovar.bytes = 0; \
|
||
iovar.error = 0; \
|
||
iovar.ver = 0; \
|
||
iovar.key = keyptr; \
|
||
iovar.ctx = NULL; \
|
||
} while(0);
|
||
|
||
/* This is a structure used to export DEBUG DIGEST capabilities to Redis
|
||
* modules. We want to capture both the ordered and unordered elements of
|
||
* a data structure, so that a digest can be created in a way that correctly
|
||
* reflects the values. See the DEBUG DIGEST command implementation for more
|
||
* background. */
|
||
typedef struct RedisModuleDigest {
|
||
unsigned char o[20]; /* Ordered elements. */
|
||
unsigned char x[20]; /* Xored elements. */
|
||
} RedisModuleDigest;
|
||
|
||
/* Just start with a digest composed of all zero bytes. */
|
||
#define moduleInitDigestContext(mdvar) do { \
|
||
memset(mdvar.o,0,sizeof(mdvar.o)); \
|
||
memset(mdvar.x,0,sizeof(mdvar.x)); \
|
||
} while(0);
|
||
|
||
/* Objects encoding. Some kind of objects like Strings and Hashes can be
|
||
* internally represented in multiple ways. The 'encoding' field of the object
|
||
* is set to one of this fields for this object. */
|
||
#define OBJ_ENCODING_RAW 0 /* Raw representation */
|
||
#define OBJ_ENCODING_INT 1 /* Encoded as integer */
|
||
#define OBJ_ENCODING_HT 2 /* Encoded as hash table */
|
||
#define OBJ_ENCODING_ZIPMAP 3 /* Encoded as zipmap */
|
||
#define OBJ_ENCODING_LINKEDLIST 4 /* No longer used: old list encoding. */
|
||
#define OBJ_ENCODING_ZIPLIST 5 /* Encoded as ziplist */
|
||
#define OBJ_ENCODING_INTSET 6 /* Encoded as intset */
|
||
#define OBJ_ENCODING_SKIPLIST 7 /* Encoded as skiplist */
|
||
#define OBJ_ENCODING_EMBSTR 8 /* Embedded sds string encoding */
|
||
#define OBJ_ENCODING_QUICKLIST 9 /* Encoded as linked list of ziplists */
|
||
#define OBJ_ENCODING_STREAM 10 /* Encoded as a radix tree of listpacks */
|
||
|
||
#define LRU_BITS 24
|
||
#define LRU_CLOCK_MAX ((1<<LRU_BITS)-1) /* Max value of obj->lru */
|
||
#define LRU_CLOCK_RESOLUTION 1000 /* LRU clock resolution in ms */
|
||
|
||
#define OBJ_SHARED_REFCOUNT INT_MAX /* Global object never destroyed. */
|
||
#define OBJ_STATIC_REFCOUNT (INT_MAX-1) /* Object allocated in the stack. */
|
||
#define OBJ_FIRST_SPECIAL_REFCOUNT OBJ_STATIC_REFCOUNT
|
||
typedef struct redisObject {
|
||
unsigned type:4; /** type表示Redis对象的类型，占用4位，包含 OBJ_STRING等。 */
|
||
unsigned encoding:4; /** encoding表示对象内部存储的编码，在一定条件下，对象的编码可以在多个编码之间转化，长度占用4位,包含OBJ_ENCODING_RAW等 */
|
||
/** lru占用24位，当用于LRU时表示最后一次访问时间，
|
||
* 当用于LFU时，高16位记录分钟级别的访问时间，低8位记录访问频率0到255，
|
||
* 默认配置8位可表示最大100万访问频次，详细参见object命令。 */
|
||
unsigned lru:LRU_BITS; /* LRU time (relative to global lru_clock) or
|
||
* LFU data (least significant 8 bits frequency
|
||
* and most significant 16 bits access time). */
|
||
int refcount; /** refcount表示对象被引用的计数，类型为整型，实际应用中参考意义不大 */
|
||
void *ptr; /** ptr是指向具体数据的指针，比如一个字符串对象，该指针指向存放数据sds的地址 */
|
||
} robj;
|
||
|
||
/* The a string name for an object's type as listed above
|
||
* Native types are checked against the OBJ_STRING, OBJ_LIST, OBJ_* defines,
|
||
* and Module types have their registered name returned. */
|
||
char *getObjectTypeName(robj*);
|
||
|
||
/* Macro used to initialize a Redis object allocated on the stack.
|
||
* Note that this macro is taken near the structure definition to make sure
|
||
* we'll update it when the structure is changed, to avoid bugs like
|
||
* bug #85 introduced exactly in this way. */
|
||
#define initStaticStringObject(_var,_ptr) do { \
|
||
_var.refcount = OBJ_STATIC_REFCOUNT; \
|
||
_var.type = OBJ_STRING; \
|
||
_var.encoding = OBJ_ENCODING_RAW; \
|
||
_var.ptr = _ptr; \
|
||
} while(0)
|
||
|
||
struct evictionPoolEntry; /* Defined in evict.c */
|
||
|
||
/* This structure is used in order to represent the output buffer of a client,
|
||
* which is actually a linked list of blocks like that, that is: client->reply. */
|
||
typedef struct clientReplyBlock {
|
||
size_t size, used;
|
||
char buf[];
|
||
} clientReplyBlock;
|
||
|
||
/* Redis database representation. There are multiple databases identified
|
||
* by integers from 0 (the default database) up to the max configured
|
||
* database. The database number is the 'id' field in the structure. */
|
||
typedef struct redisDb {
|
||
dict *dict; /* 键空间字典，存放所有键值对。 */
|
||
dict *expires; /* key的超时时间字典,存放键的过期时间，注意dict和expires中的键都指向同一个键的sds。 */
|
||
dict *blocking_keys; /* 阻塞的key:处于阻塞状态的键和对应的client。*/
|
||
dict *ready_keys; /* 准备好的key:解除阻塞状态的键和对应的client，与blocking_keys属性相对，为了实现需要阻塞的命令设计 */
|
||
dict *watched_keys; /* 执行事务的key:watch的键和对应的client，主要用于事务。 */
|
||
int id; /* 数据库ID */
|
||
long long avg_ttl; /* 数据库内所有键的平均生存时间，用于统计 */
|
||
unsigned long expires_cursor; /* 活动过期周期的光标。 */
|
||
list *defrag_later; /* 逐渐尝试逐个碎片整理的key列表 */
|
||
} redisDb;
|
||
|
||
/* Client MULTI/EXEC state */
|
||
typedef struct multiCmd {
|
||
robj **argv;
|
||
int argc;
|
||
struct redisCommand *cmd;
|
||
} multiCmd;
|
||
|
||
typedef struct multiState {
|
||
multiCmd *commands; /* Array of MULTI commands */
|
||
int count; /* Total number of MULTI commands */
|
||
int cmd_flags; /* The accumulated command flags OR-ed together.
|
||
So if at least a command has a given flag, it
|
||
will be set in this field. */
|
||
int minreplicas; /* MINREPLICAS for synchronous replication */
|
||
time_t minreplicas_timeout; /* MINREPLICAS timeout as unixtime. */
|
||
} multiState;
|
||
|
||
/* This structure holds the blocking operation state for a client.
|
||
* The fields used depend on client->btype. */
|
||
typedef struct blockingState {
|
||
/* Generic fields. */
|
||
mstime_t timeout; /* Blocking operation timeout. If UNIX current time
|
||
* is > timeout then the operation timed out. */
|
||
|
||
/* BLOCKED_LIST, BLOCKED_ZSET and BLOCKED_STREAM */
|
||
dict *keys; /* The keys we are waiting to terminate a blocking
|
||
* operation such as BLPOP or XREAD. Or NULL. */
|
||
robj *target; /* The key that should receive the element,
|
||
* for BRPOPLPUSH. */
|
||
|
||
/* BLOCK_STREAM */
|
||
size_t xread_count; /* XREAD COUNT option. */
|
||
robj *xread_group; /* XREADGROUP group name. */
|
||
robj *xread_consumer; /* XREADGROUP consumer name. */
|
||
mstime_t xread_retry_time, xread_retry_ttl;
|
||
int xread_group_noack;
|
||
|
||
/* BLOCKED_WAIT */
|
||
int numreplicas; /* Number of replicas we are waiting for ACK. */
|
||
long long reploffset; /* Replication offset to reach. */
|
||
|
||
/* BLOCKED_MODULE */
|
||
void *module_blocked_handle; /* RedisModuleBlockedClient structure.
|
||
which is opaque for the Redis core, only
|
||
handled in module.c. */
|
||
} 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;
|
||
|
||
/* This structure represents a Redis user. This is useful for ACLs, the
|
||
* user is associated to the connection after the connection is authenticated.
|
||
* If there is no associated user, the connection uses the default user. */
|
||
#define USER_COMMAND_BITS_COUNT 1024 /* The total number of command bits
|
||
in the user structure. The last valid
|
||
command ID we can set in the user
|
||
is USER_COMMAND_BITS_COUNT-1. */
|
||
#define USER_FLAG_ENABLED (1<<0) /* The user is active. */
|
||
#define USER_FLAG_DISABLED (1<<1) /* The user is disabled. */
|
||
#define USER_FLAG_ALLKEYS (1<<2) /* The user can mention any key. */
|
||
#define USER_FLAG_ALLCOMMANDS (1<<3) /* The user can run all commands. */
|
||
#define USER_FLAG_NOPASS (1<<4) /* The user requires no password, any
|
||
provided password will work. For the
|
||
default user, this also means that
|
||
no AUTH is needed, and every
|
||
connection is immediately
|
||
authenticated. */
|
||
typedef struct {
|
||
sds name; /* The username as an SDS string. */
|
||
uint64_t flags; /* See USER_FLAG_* */
|
||
|
||
/* The bit in allowed_commands is set if this user has the right to
|
||
* execute this command. In commands having subcommands, if this bit is
|
||
* set, then all the subcommands are also available.
|
||
*
|
||
* If the bit for a given command is NOT set and the command has
|
||
* subcommands, Redis will also check allowed_subcommands in order to
|
||
* understand if the command can be executed. */
|
||
uint64_t allowed_commands[USER_COMMAND_BITS_COUNT/64];
|
||
|
||
/* This array points, for each command ID (corresponding to the command
|
||
* bit set in allowed_commands), to an array of SDS strings, terminated by
|
||
* a NULL pointer, with all the sub commands that can be executed for
|
||
* this command. When no subcommands matching is used, the field is just
|
||
* set to NULL to avoid allocating USER_COMMAND_BITS_COUNT pointers. */
|
||
sds **allowed_subcommands;
|
||
list *passwords; /* A list of SDS valid passwords for this user. */
|
||
list *patterns; /* A list of allowed key patterns. If this field is NULL
|
||
the user cannot mention any key in a command, unless
|
||
the flag ALLKEYS is set in the user. */
|
||
} user;
|
||
|
||
/* With multiplexing we need to take per-client state.
|
||
* Clients are taken in a linked list. */
|
||
|
||
#define CLIENT_ID_AOF (UINT64_MAX) /* Reserved ID for the AOF client. If you
|
||
need more reserved IDs use UINT64_MAX-1,
|
||
-2, ... and so forth. */
|
||
|
||
typedef struct client {
|
||
uint64_t id; /* Client incremental unique ID. */
|
||
connection *conn;
|
||
int resp; /* RESP protocol version. Can be 2 or 3. */
|
||
redisDb *db; /* Pointer to currently SELECTed DB. */
|
||
robj *name; /* As set by CLIENT SETNAME. */
|
||
sds querybuf; /* Buffer we use to accumulate client queries. */
|
||
size_t qb_pos; /* The position we have read in querybuf. */
|
||
sds pending_querybuf; /* If this client is flagged as master, this buffer
|
||
represents the yet not applied portion of the
|
||
replication stream that we are receiving from
|
||
the master. */
|
||
size_t querybuf_peak; /* Recent (100ms or more) peak of querybuf size. */
|
||
int argc; /* Num of arguments of current command. */
|
||
robj **argv; /* Arguments of current command. */
|
||
struct redisCommand *cmd, *lastcmd; /* Last command executed. */
|
||
user *user; /* User associated with this connection. If the
|
||
user is set to NULL the connection can do
|
||
anything (admin). */
|
||
int reqtype; /* Request protocol type: PROTO_REQ_* */
|
||
int multibulklen; /* Number of multi bulk arguments left to read. */
|
||
long bulklen; /* Length of bulk argument in multi bulk request. */
|
||
list *reply; /* List of reply objects to send to the client. */
|
||
unsigned long long reply_bytes; /* Tot bytes of objects in reply list. */
|
||
size_t sentlen; /* Amount of bytes already sent in the current
|
||
buffer or object being sent. */
|
||
time_t ctime; /* Client creation time. */
|
||
time_t lastinteraction; /* Time of the last interaction, used for timeout */
|
||
time_t obuf_soft_limit_reached_time;
|
||
uint64_t flags; /* Client flags: CLIENT_* macros. */
|
||
int authenticated; /* Needed when the default user requires auth. */
|
||
int replstate; /* Replication state if this is a slave. */
|
||
int repl_put_online_on_ack; /* Install slave write handler on first ACK. */
|
||
int repldbfd; /* Replication DB file descriptor. */
|
||
off_t repldboff; /* Replication DB file offset. */
|
||
off_t repldbsize; /* Replication DB file size. */
|
||
sds replpreamble; /* Replication DB preamble. */
|
||
long long read_reploff; /* Read replication offset if this is a master. */
|
||
long long reploff; /* Applied replication offset if this is a master. */
|
||
long long repl_ack_off; /* Replication ack offset, if this is a slave. */
|
||
long long repl_ack_time;/* Replication ack time, if this is a slave. */
|
||
long long psync_initial_offset; /* FULLRESYNC reply offset other slaves
|
||
copying this slave output buffer
|
||
should use. */
|
||
char replid[CONFIG_RUN_ID_SIZE+1]; /* Master replication ID (if master). */
|
||
int slave_listening_port; /* As configured with: SLAVECONF listening-port */
|
||
char slave_ip[NET_IP_STR_LEN]; /* Optionally given by REPLCONF ip-address */
|
||
int slave_capa; /* Slave capabilities: SLAVE_CAPA_* bitwise OR. */
|
||
multiState mstate; /* MULTI/EXEC state */
|
||
int btype; /* Type of blocking op if CLIENT_BLOCKED. */
|
||
blockingState bpop; /* blocking state */
|
||
long long woff; /* Last write global replication offset. */
|
||
list *watched_keys; /* Keys WATCHED for MULTI/EXEC CAS */
|
||
dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */
|
||
list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIBE) */
|
||
sds peerid; /* Cached peer ID. */
|
||
listNode *client_list_node; /* list node in client list */
|
||
RedisModuleUserChangedFunc auth_callback; /* Module callback to execute
|
||
* when the authenticated user
|
||
* changes. */
|
||
void *auth_callback_privdata; /* Private data that is passed when the auth
|
||
* changed callback is executed. Opaque for
|
||
* Redis Core. */
|
||
void *auth_module; /* The module that owns the callback, which is used
|
||
* to disconnect the client if the module is
|
||
* unloaded for cleanup. Opaque for Redis Core.*/
|
||
|
||
/* If this client is in tracking mode and this field is non zero,
|
||
* invalidation messages for keys fetched by this client will be send to
|
||
* the specified client ID. */
|
||
uint64_t client_tracking_redirection;
|
||
rax *client_tracking_prefixes; /* A dictionary of prefixes we are already
|
||
subscribed to in BCAST mode, in the
|
||
context of client side caching. */
|
||
/* In clientsCronTrackClientsMemUsage() we track the memory usage of
|
||
* each client and add it to the sum of all the clients of a given type,
|
||
* however we need to remember what was the old contribution of each
|
||
* client, and in which categoty the client was, in order to remove it
|
||
* before adding it the new value. */
|
||
uint64_t client_cron_last_memory_usage;
|
||
int client_cron_last_memory_type;
|
||
/* Response buffer */
|
||
int bufpos;
|
||
char buf[PROTO_REPLY_CHUNK_BYTES];
|
||
} client;
|
||
|
||
struct saveparam {
|
||
time_t seconds;
|
||
int changes;
|
||
};
|
||
|
||
struct moduleLoadQueueEntry {
|
||
sds path;
|
||
int argc;
|
||
robj **argv;
|
||
};
|
||
|
||
struct sharedObjectsStruct {
|
||
robj *crlf, *ok, *err, *emptybulk, *czero, *cone, *pong, *space,
|
||
*colon, *queued, *null[4], *nullarray[4], *emptymap[4], *emptyset[4],
|
||
*emptyarray, *wrongtypeerr, *nokeyerr, *syntaxerr, *sameobjecterr,
|
||
*outofrangeerr, *noscripterr, *loadingerr, *slowscripterr, *bgsaveerr,
|
||
*masterdownerr, *roslaveerr, *execaborterr, *noautherr, *noreplicaserr,
|
||
*busykeyerr, *oomerr, *plus, *messagebulk, *pmessagebulk, *subscribebulk,
|
||
*unsubscribebulk, *psubscribebulk, *punsubscribebulk, *del, *unlink,
|
||
*rpop, *lpop, *lpush, *rpoplpush, *zpopmin, *zpopmax, *emptyscan,
|
||
*multi, *exec,
|
||
*select[PROTO_SHARED_SELECT_CMDS],
|
||
*integers[OBJ_SHARED_INTEGERS],
|
||
*mbulkhdr[OBJ_SHARED_BULKHDR_LEN], /* "*<value>\r\n" */
|
||
*bulkhdr[OBJ_SHARED_BULKHDR_LEN]; /* "$<value>\r\n" */
|
||
sds minstring, maxstring;
|
||
};
|
||
|
||
/* ZSETs use a specialized version of Skiplists */
|
||
typedef struct zskiplistNode {
|
||
// 成员对象,使用Redis内部封装的字符串类型
|
||
sds ele;
|
||
// 分值
|
||
double score;
|
||
// 后退指针
|
||
struct zskiplistNode *backward;
|
||
// 层
|
||
struct zskiplistLevel {
|
||
// 前进指针
|
||
struct zskiplistNode *forward;
|
||
// 跨度
|
||
unsigned long span;
|
||
} level[];
|
||
} zskiplistNode;
|
||
|
||
typedef struct zskiplist {
|
||
// 表中节点的数量
|
||
struct zskiplistNode *header, *tail;
|
||
// 表中节点的数量
|
||
unsigned long length;
|
||
// 表中层数最大的节点的层数
|
||
int level;
|
||
} zskiplist;
|
||
|
||
typedef struct zset {
|
||
dict *dict;
|
||
zskiplist *zsl;
|
||
} zset;
|
||
|
||
typedef struct clientBufferLimitsConfig {
|
||
unsigned long long hard_limit_bytes;
|
||
unsigned long long soft_limit_bytes;
|
||
time_t soft_limit_seconds;
|
||
} clientBufferLimitsConfig;
|
||
|
||
extern clientBufferLimitsConfig clientBufferLimitsDefaults[CLIENT_TYPE_OBUF_COUNT];
|
||
|
||
/* The redisOp structure defines a Redis Operation, that is an instance of
|
||
* a command with an argument vector, database ID, propagation target
|
||
* (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;
|
||
|
||
/* This structure is returned by the getMemoryOverheadData() function in
|
||
* order to return memory overhead information. */
|
||
struct redisMemOverhead {
|
||
size_t peak_allocated;
|
||
size_t total_allocated;
|
||
size_t startup_allocated;
|
||
size_t repl_backlog;
|
||
size_t clients_slaves;
|
||
size_t clients_normal;
|
||
size_t aof_buffer;
|
||
size_t lua_caches;
|
||
size_t overhead_total;
|
||
size_t dataset;
|
||
size_t total_keys;
|
||
size_t bytes_per_key;
|
||
float dataset_perc;
|
||
float peak_perc;
|
||
float total_frag;
|
||
ssize_t total_frag_bytes;
|
||
float allocator_frag;
|
||
ssize_t allocator_frag_bytes;
|
||
float allocator_rss;
|
||
ssize_t allocator_rss_bytes;
|
||
float rss_extra;
|
||
size_t rss_extra_bytes;
|
||
size_t num_dbs;
|
||
struct {
|
||
size_t dbid;
|
||
size_t overhead_ht_main;
|
||
size_t overhead_ht_expires;
|
||
} *db;
|
||
};
|
||
|
||
/* This structure can be optionally passed to RDB save/load functions in
|
||
* order to implement additional functionalities, by storing and loading
|
||
* metadata to the RDB file.
|
||
*
|
||
* Currently the only use is to select a DB at load time, useful in
|
||
* replication in order to make sure that chained slaves (slaves of slaves)
|
||
* select the correct DB and are able to accept the stream coming from the
|
||
* top-level master. */
|
||
typedef struct rdbSaveInfo {
|
||
/* Used saving and loading. */
|
||
int repl_stream_db; /* DB to select in server.master client. */
|
||
|
||
/* Used only loading. */
|
||
int repl_id_is_set; /* True if repl_id field is set. */
|
||
char repl_id[CONFIG_RUN_ID_SIZE+1]; /* Replication ID. */
|
||
long long repl_offset; /* Replication offset. */
|
||
} rdbSaveInfo;
|
||
|
||
#define RDB_SAVE_INFO_INIT {-1,0,"000000000000000000000000000000",-1}
|
||
|
||
struct malloc_stats {
|
||
size_t zmalloc_used;
|
||
size_t process_rss;
|
||
size_t allocator_allocated;
|
||
size_t allocator_active;
|
||
size_t allocator_resident;
|
||
};
|
||
|
||
/*-----------------------------------------------------------------------------
|
||
* TLS Context Configuration
|
||
*----------------------------------------------------------------------------*/
|
||
|
||
typedef struct redisTLSContextConfig {
|
||
char *cert_file;
|
||
char *key_file;
|
||
char *dh_params_file;
|
||
char *ca_cert_file;
|
||
char *ca_cert_dir;
|
||
char *protocols;
|
||
char *ciphers;
|
||
char *ciphersuites;
|
||
int prefer_server_ciphers;
|
||
} redisTLSContextConfig;
|
||
|
||
/*-----------------------------------------------------------------------------
|
||
* Global server state
|
||
*----------------------------------------------------------------------------*/
|
||
|
||
struct clusterState;
|
||
|
||
/* AIX defines hz to __hz, we don't use this define and in order to allow
|
||
* Redis build on AIX we need to undef it. */
|
||
#ifdef _AIX
|
||
#undef hz
|
||
#endif
|
||
|
||
#define CHILD_INFO_MAGIC 0xC17DDA7A12345678LL
|
||
#define CHILD_INFO_TYPE_RDB 0
|
||
#define CHILD_INFO_TYPE_AOF 1
|
||
#define CHILD_INFO_TYPE_MODULE 3
|
||
|
||
struct redisServer {
|
||
/* General */
|
||
pid_t pid; /* Main process pid. */
|
||
char *configfile; /* Absolute config file path, or NULL */
|
||
char *executable; /* Absolute executable file path. */
|
||
char **exec_argv; /* Executable argv vector (copy). */
|
||
int dynamic_hz; /* Change hz value depending on # of clients. */
|
||
int config_hz; /* Configured HZ value. May be different than
|
||
the actual 'hz' field value if dynamic-hz
|
||
is enabled. */
|
||
int hz; /* serverCron() calls frequency in hertz */
|
||
redisDb *db;
|
||
dict *commands; /* Command table */
|
||
dict *orig_commands; /* Command table before command renaming. */
|
||
aeEventLoop *el;
|
||
_Atomic unsigned int lruclock; /* Clock for LRU eviction */
|
||
int shutdown_asap; /* SHUTDOWN needed ASAP */
|
||
int activerehashing; /* Incremental rehash in serverCron() */
|
||
int active_defrag_running; /* Active defragmentation running (holds current scan aggressiveness) */
|
||
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[CONFIG_RUN_ID_SIZE+1]; /* ID always different at every exec. */
|
||
int sentinel_mode; /* True if this instance is a Sentinel. */
|
||
size_t initial_memory_usage; /* Bytes used after initialization. */
|
||
int always_show_logo; /* Show logo even for non-stdout logging. */
|
||
/* Modules */
|
||
dict *moduleapi; /* Exported core APIs dictionary for modules. */
|
||
dict *sharedapi; /* Like moduleapi but containing the APIs that
|
||
modules share with each other. */
|
||
list *loadmodule_queue; /* List of modules to load at startup. */
|
||
int module_blocked_pipe[2]; /* Pipe used to awake the event loop if a
|
||
client blocked on a module command needs
|
||
to be processed. */
|
||
pid_t module_child_pid; /* PID of module child */
|
||
/* Networking */
|
||
int port; /* TCP listening port */
|
||
int tls_port; /* TLS listening port */
|
||
int tcp_backlog; /* TCP listen() backlog */
|
||
char *bindaddr[CONFIG_BINDADDR_MAX]; /* Addresses we should bind to */
|
||
int bindaddr_count; /* Number of addresses in server.bindaddr[] */
|
||
char *unixsocket; /* UNIX socket path */
|
||
mode_t unixsocketperm; /* UNIX socket permission */
|
||
int ipfd[CONFIG_BINDADDR_MAX]; /* TCP socket file descriptors */
|
||
int ipfd_count; /* Used slots in ipfd[] */
|
||
int tlsfd[CONFIG_BINDADDR_MAX]; /* TLS socket file descriptors */
|
||
int tlsfd_count; /* Used slots in tlsfd[] */
|
||
int sofd; /* Unix socket file descriptor */
|
||
int cfd[CONFIG_BINDADDR_MAX];/* Cluster bus listening socket */
|
||
int cfd_count; /* Used slots in cfd[] */
|
||
list *clients; /* List of active clients */
|
||
list *clients_to_close; /* Clients to close asynchronously */
|
||
list *clients_pending_write; /* There is to write or install handler. */
|
||
list *clients_pending_read; /* Client has pending read socket buffers. */
|
||
list *slaves, *monitors; /* List of slaves and MONITORs */
|
||
client *current_client; /* Current client executing the command. */
|
||
rax *clients_timeout_table; /* Radix tree for blocked clients timeouts. */
|
||
long fixed_time_expire; /* If > 0, expire keys against server.mstime. */
|
||
rax *clients_index; /* Active clients dictionary by client ID. */
|
||
int clients_paused; /* True if clients are currently paused */
|
||
mstime_t clients_pause_end_time; /* Time when we undo clients_paused */
|
||
char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
|
||
dict *migrate_cached_sockets;/* MIGRATE cached sockets */
|
||
_Atomic uint64_t next_client_id; /* Next client unique ID. Incremental. */
|
||
int protected_mode; /* Don't accept external connections. */
|
||
int gopher_enabled; /* If true the server will reply to gopher
|
||
queries. Will still serve RESP2 queries. */
|
||
int io_threads_num; /* Number of IO threads to use. */
|
||
int io_threads_do_reads; /* Read and parse from IO threads? */
|
||
long long events_processed_while_blocked; /* processEventsWhileBlocked() */
|
||
|
||
/* RDB / AOF loading information */
|
||
int loading; /* We are loading data from disk if true */
|
||
off_t loading_total_bytes;
|
||
off_t loading_loaded_bytes;
|
||
time_t loading_start_time;
|
||
off_t loading_process_events_interval_bytes;
|
||
/* Fast pointers to often looked up command */
|
||
struct redisCommand *delCommand, *multiCommand, *lpushCommand,
|
||
*lpopCommand, *rpopCommand, *zpopminCommand,
|
||
*zpopmaxCommand, *sremCommand, *execCommand,
|
||
*expireCommand, *pexpireCommand, *xclaimCommand,
|
||
*xgroupCommand, *rpoplpushCommand;
|
||
/* 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 */
|
||
double stat_expired_stale_perc; /* Percentage of keys probably expired */
|
||
long long stat_expired_time_cap_reached_count; /* Early expire cylce stops.*/
|
||
long long stat_expire_cycle_time_used; /* Cumulative microseconds used. */
|
||
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 */
|
||
long long stat_active_defrag_hits; /* number of allocations moved */
|
||
long long stat_active_defrag_misses; /* number of allocations scanned but not moved */
|
||
long long stat_active_defrag_key_hits; /* number of keys with moved allocations */
|
||
long long stat_active_defrag_key_misses;/* number of keys scanned and not moved */
|
||
long long stat_active_defrag_scanned; /* number of dictEntries scanned */
|
||
size_t stat_peak_memory; /* Max used memory record */
|
||
long long stat_fork_time; /* Time needed to perform latest fork() */
|
||
double stat_fork_rate; /* Fork rate in GB/sec. */
|
||
long long stat_rejected_conn; /* Clients rejected because of maxclients */
|
||
long long stat_sync_full; /* Number of full resyncs with slaves. */
|
||
long long stat_sync_partial_ok; /* Number of accepted PSYNC requests. */
|
||
long long stat_sync_partial_err;/* Number of unaccepted PSYNC requests. */
|
||
list *slowlog; /* SLOWLOG list of commands */
|
||
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 */
|
||
struct malloc_stats cron_malloc_stats; /* sampled in serverCron(). */
|
||
_Atomic long long stat_net_input_bytes; /* Bytes read from network. */
|
||
_Atomic long long stat_net_output_bytes; /* Bytes written to network. */
|
||
size_t stat_rdb_cow_bytes; /* Copy on write bytes during RDB saving. */
|
||
size_t stat_aof_cow_bytes; /* Copy on write bytes during AOF rewrite. */
|
||
size_t stat_module_cow_bytes; /* Copy on write bytes during module fork. */
|
||
uint64_t stat_clients_type_memory[CLIENT_TYPE_COUNT];/* Mem usage by type */
|
||
long long stat_unexpected_error_replies; /* Number of unexpected (aof-loading, replica to master, etc.) error replies */
|
||
/* The following two are used to track instantaneous metrics, like
|
||
* number of operations per second, network traffic. */
|
||
struct {
|
||
long long last_sample_time; /* Timestamp of last sample in ms */
|
||
long long last_sample_count;/* Count in last sample */
|
||
long long samples[STATS_METRIC_SAMPLES];
|
||
int idx;
|
||
} inst_metric[STATS_METRIC_COUNT];
|
||
/* Configuration */
|
||
int verbosity; /* Loglevel in redis.conf */
|
||
int maxidletime; /* Client timeout in seconds */
|
||
int tcpkeepalive; /* Set SO_KEEPALIVE if non-zero. */
|
||
int active_expire_enabled; /* Can be disabled for testing purposes. */
|
||
int active_expire_effort; /* From 1 (default) to 10, active effort. */
|
||
int active_defrag_enabled;
|
||
int jemalloc_bg_thread; /* Enable jemalloc background thread */
|
||
size_t active_defrag_ignore_bytes; /* minimum amount of fragmentation waste to start active defrag */
|
||
int active_defrag_threshold_lower; /* minimum percentage of fragmentation to start active defrag */
|
||
int active_defrag_threshold_upper; /* maximum percentage of fragmentation at which we use maximum effort */
|
||
int active_defrag_cycle_min; /* minimal effort for defrag in CPU percentage */
|
||
int active_defrag_cycle_max; /* maximal effort for defrag in CPU percentage */
|
||
unsigned long active_defrag_max_scan_fields; /* maximum number of fields of set/hash/zset/list to process from within the main dict scan */
|
||
_Atomic size_t client_max_querybuf_len; /* Limit for client query buffer length */
|
||
int dbnum; /* Total number of configured DBs */
|
||
int supervised; /* 1 if supervised, 0 otherwise. */
|
||
int supervised_mode; /* See SUPERVISED_* */
|
||
int daemonize; /* True if running as a daemon */
|
||
clientBufferLimitsConfig client_obuf_limits[CLIENT_TYPE_OBUF_COUNT];
|
||
/* AOF persistence */
|
||
int aof_enabled; /* AOF configuration */
|
||
int aof_state; /* AOF_(ON|OFF|WAIT_REWRITE) */
|
||
int aof_fsync; /* Kind of fsync() policy */
|
||
char *aof_filename; /* Name of the AOF file */
|
||
int aof_no_fsync_on_rewrite; /* Don't fsync if a rewrite is in prog. */
|
||
int aof_rewrite_perc; /* Rewrite AOF if % growth is > M and... */
|
||
off_t aof_rewrite_min_size; /* the AOF file is at least N bytes. */
|
||
off_t aof_rewrite_base_size; /* AOF size on latest startup or rewrite. */
|
||
off_t aof_current_size; /* AOF current size. */
|
||
off_t aof_fsync_offset; /* AOF offset which is already synced to disk. */
|
||
int aof_flush_sleep; /* Micros to sleep before flush. (used by tests) */
|
||
int aof_rewrite_scheduled; /* Rewrite once BGSAVE terminates. */
|
||
pid_t aof_child_pid; /* PID if rewriting process */
|
||
list *aof_rewrite_buf_blocks; /* Hold changes during an AOF rewrite. */
|
||
sds aof_buf; /* AOF buffer, written before entering the event loop */
|
||
int aof_fd; /* File descriptor of currently selected AOF file */
|
||
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() */
|
||
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; /* C_OK or C_ERR */
|
||
unsigned long aof_delayed_fsync; /* delayed AOF fsync() counter */
|
||
int aof_rewrite_incremental_fsync;/* fsync incrementally while aof rewriting? */
|
||
int rdb_save_incremental_fsync; /* fsync incrementally while rdb saving? */
|
||
int aof_last_write_status; /* C_OK or C_ERR */
|
||
int aof_last_write_errno; /* Valid if aof_last_write_status is ERR */
|
||
int aof_load_truncated; /* Don't stop on unexpected AOF EOF. */
|
||
int aof_use_rdb_preamble; /* Use RDB preamble on AOF rewrites. */
|
||
/* AOF pipes used to communicate between parent and child during rewrite. */
|
||
int aof_pipe_write_data_to_child;
|
||
int aof_pipe_read_data_from_parent;
|
||
int aof_pipe_write_ack_to_parent;
|
||
int aof_pipe_read_ack_from_child;
|
||
int aof_pipe_write_ack_to_child;
|
||
int aof_pipe_read_ack_from_parent;
|
||
int aof_stop_sending_diff; /* If true stop sending accumulated diffs
|
||
to child process. */
|
||
sds aof_child_diff; /* AOF diff accumulator child side. */
|
||
/* RDB persistence */
|
||
long long dirty; /* Changes to DB from the last save */
|
||
long long dirty_before_bgsave; /* Used to restore dirty on failed BGSAVE */
|
||
pid_t rdb_child_pid; /* PID of RDB saving child */
|
||
struct saveparam *saveparams; /* Save points array for RDB */
|
||
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? */
|
||
int rdb_del_sync_files; /* Remove RDB files used only for SYNC if
|
||
the instance does not use persistence. */
|
||
time_t lastsave; /* Unix time of last successful save */
|
||
time_t lastbgsave_try; /* Unix time of last attempted bgsave */
|
||
time_t rdb_save_time_last; /* Time used by last RDB save run. */
|
||
time_t rdb_save_time_start; /* Current RDB save start time. */
|
||
int rdb_bgsave_scheduled; /* BGSAVE when possible if true. */
|
||
int rdb_child_type; /* Type of save by active child. */
|
||
int lastbgsave_status; /* C_OK or C_ERR */
|
||
int stop_writes_on_bgsave_err; /* Don't allow writes if can't BGSAVE */
|
||
int rdb_pipe_write; /* RDB pipes used to transfer the rdb */
|
||
int rdb_pipe_read; /* data to the parent process in diskless repl. */
|
||
connection **rdb_pipe_conns; /* Connections which are currently the */
|
||
int rdb_pipe_numconns; /* target of diskless rdb fork child. */
|
||
int rdb_pipe_numconns_writing; /* Number of rdb conns with pending writes. */
|
||
char *rdb_pipe_buff; /* In diskless replication, this buffer holds data */
|
||
int rdb_pipe_bufflen; /* that was read from the the rdb pipe. */
|
||
int rdb_key_save_delay; /* Delay in microseconds between keys while
|
||
* writing the RDB. (for testings) */
|
||
int key_load_delay; /* Delay in microseconds between keys while
|
||
* loading aof or rdb. (for testings) */
|
||
/* Pipe and data structures for child -> parent info sharing. */
|
||
int child_info_pipe[2]; /* Pipe used to write the child_info_data. */
|
||
struct {
|
||
int process_type; /* AOF or RDB child? */
|
||
size_t cow_size; /* Copy on write size. */
|
||
unsigned long long magic; /* Magic value to make sure data is valid. */
|
||
} child_info_data;
|
||
/* 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? */
|
||
char *syslog_ident; /* Syslog ident */
|
||
int syslog_facility; /* Syslog facility */
|
||
/* Replication (master) */
|
||
char replid[CONFIG_RUN_ID_SIZE+1]; /* My current replication ID. */
|
||
char replid2[CONFIG_RUN_ID_SIZE+1]; /* replid inherited from master*/
|
||
long long master_repl_offset; /* My current replication offset */
|
||
long long second_replid_offset; /* Accept offsets up to this for replid2. */
|
||
int slaveseldb; /* Last SELECTed DB in replication output */
|
||
int repl_ping_slave_period; /* Master pings the slave every N seconds */
|
||
char *repl_backlog; /* Replication backlog for partial syncs */
|
||
long long repl_backlog_size; /* Backlog circular buffer size */
|
||
long long repl_backlog_histlen; /* Backlog actual data length */
|
||
long long repl_backlog_idx; /* Backlog circular buffer current offset,
|
||
that is the next byte will'll write to.*/
|
||
long long repl_backlog_off; /* Replication "master offset" of first
|
||
byte in the replication backlog buffer.*/
|
||
time_t repl_backlog_time_limit; /* Time without slaves after the backlog
|
||
gets released. */
|
||
time_t repl_no_slaves_since; /* We have no slaves since that time.
|
||
Only valid if server.slaves len is 0. */
|
||
int repl_min_slaves_to_write; /* Min number of slaves to write. */
|
||
int repl_min_slaves_max_lag; /* Max lag of <count> slaves to write. */
|
||
int repl_good_slaves_count; /* Number of slaves with lag <= max_lag. */
|
||
int repl_diskless_sync; /* Master send RDB to slaves sockets directly. */
|
||
int repl_diskless_load; /* Slave parse RDB directly from the socket.
|
||
* see REPL_DISKLESS_LOAD_* enum */
|
||
int repl_diskless_sync_delay; /* Delay to start a diskless repl BGSAVE. */
|
||
/* Replication (slave) */
|
||
char *masteruser; /* AUTH with this user and masterauth with master */
|
||
char *masterauth; /* AUTH with this password with master */
|
||
char *masterhost; /* Hostname of master */
|
||
int masterport; /* Port of master */
|
||
int repl_timeout; /* Timeout after N seconds of master idle */
|
||
client *master; /* Client that is master for this slave */
|
||
client *cached_master; /* Cached master to be reused for PSYNC. */
|
||
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_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. */
|
||
connection *repl_transfer_s; /* Slave -> Master SYNC connection */
|
||
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? */
|
||
int repl_slave_ro; /* Slave is read only? */
|
||
int repl_slave_ignore_maxmemory; /* If true slaves do not evict. */
|
||
time_t repl_down_since; /* Unix time at which link with master went down */
|
||
int repl_disable_tcp_nodelay; /* Disable TCP_NODELAY after SYNC? */
|
||
int slave_priority; /* Reported in INFO and used by Sentinel. */
|
||
int slave_announce_port; /* Give the master this listening port. */
|
||
char *slave_announce_ip; /* Give the master this ip address. */
|
||
/* The following two fields is where we store master PSYNC replid/offset
|
||
* while the PSYNC is in progress. At the end we'll copy the fields into
|
||
* the server->master client structure. */
|
||
char master_replid[CONFIG_RUN_ID_SIZE+1]; /* Master PSYNC runid. */
|
||
long long master_initial_offset; /* Master PSYNC offset. */
|
||
int repl_slave_lazy_flush; /* Lazy FLUSHALL before loading DB? */
|
||
/* Replication script cache. */
|
||
dict *repl_scriptcache_dict; /* SHA1 all slaves are aware of. */
|
||
list *repl_scriptcache_fifo; /* First in, first out LRU eviction. */
|
||
unsigned int repl_scriptcache_size; /* Max number of elements. */
|
||
/* Synchronous replication. */
|
||
list *clients_waiting_acks; /* Clients waiting in WAIT command. */
|
||
int get_ack_from_slaves; /* If true we send REPLCONF GETACK. */
|
||
/* Limits */
|
||
unsigned int maxclients; /* Max number of simultaneous clients */
|
||
unsigned long long maxmemory; /* Max number of memory bytes to use */
|
||
int maxmemory_policy; /* Policy for key eviction */
|
||
int maxmemory_samples; /* Pricision of random sampling */
|
||
int lfu_log_factor; /* LFU logarithmic counter factor. */
|
||
int lfu_decay_time; /* LFU counter decay factor. */
|
||
long long proto_max_bulk_len; /* Protocol bulk length maximum size. */
|
||
/* Blocked clients */
|
||
unsigned int blocked_clients; /* # of clients executing a blocking cmd.*/
|
||
unsigned int blocked_clients_by_type[BLOCKED_NUM];
|
||
list *unblocked_clients; /* list of clients to unblock before next loop */
|
||
list *ready_keys; /* List of readyList structures for BLPOP & co */
|
||
/* Client side caching. */
|
||
unsigned int tracking_clients; /* # of clients with tracking enabled.*/
|
||
size_t tracking_table_max_keys; /* Max number of keys in tracking table. */
|
||
/* 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;
|
||
int sort_store;
|
||
/* Zip structure config, see redis.conf for more information */
|
||
size_t hash_max_ziplist_entries;
|
||
size_t hash_max_ziplist_value;
|
||
size_t set_max_intset_entries;
|
||
size_t zset_max_ziplist_entries;
|
||
size_t zset_max_ziplist_value;
|
||
size_t hll_sparse_max_bytes;
|
||
size_t stream_node_max_bytes;
|
||
long long stream_node_max_entries;
|
||
/* List parameters */
|
||
int list_max_ziplist_size;
|
||
int list_compress_depth;
|
||
/* time cache */
|
||
_Atomic time_t unixtime; /* Unix time sampled every cron cycle. */
|
||
time_t timezone; /* Cached timezone. As set by tzset(). */
|
||
int daylight_active; /* Currently in daylight saving time. */
|
||
mstime_t mstime; /* 'unixtime' in milliseconds. */
|
||
ustime_t ustime; /* 'unixtime' in microseconds. */
|
||
/* Pubsub */
|
||
dict *pubsub_channels; /* Map channels to list of subscribed clients */
|
||
list *pubsub_patterns; /* A list of pubsub_patterns */
|
||
dict *pubsub_patterns_dict; /* A dict of pubsub_patterns */
|
||
int notify_keyspace_events; /* Events to propagate via Pub/Sub. This is an
|
||
xor of NOTIFY_... flags. */
|
||
/* Cluster */
|
||
int cluster_enabled; /* Is cluster enabled? */
|
||
mstime_t cluster_node_timeout; /* Cluster node timeout. */
|
||
char *cluster_configfile; /* Cluster auto-generated config file name. */
|
||
struct clusterState *cluster; /* State of the cluster */
|
||
int cluster_migration_barrier; /* Cluster replicas migration barrier. */
|
||
int cluster_slave_validity_factor; /* Slave max data age for failover. */
|
||
int cluster_require_full_coverage; /* If true, put the cluster down if
|
||
there is at least an uncovered slot.*/
|
||
int cluster_slave_no_failover; /* Prevent slave from starting a failover
|
||
if the master is in failure state. */
|
||
char *cluster_announce_ip; /* IP address to announce on cluster bus. */
|
||
int cluster_announce_port; /* base port to announce on cluster bus. */
|
||
int cluster_announce_bus_port; /* bus port to announce on cluster bus. */
|
||
int cluster_module_flags; /* Set of flags that Redis modules are able
|
||
to set in order to suppress certain
|
||
native Redis Cluster features. Check the
|
||
REDISMODULE_CLUSTER_FLAG_*. */
|
||
int cluster_allow_reads_when_down; /* Are reads allowed when the cluster
|
||
is down? */
|
||
/* Scripting */
|
||
lua_State *lua; /* The Lua interpreter. We use just one for all clients */
|
||
client *lua_client; /* The "fake client" to query Redis from Lua */
|
||
client *lua_caller; /* The client running EVAL right now, or NULL */
|
||
char* lua_cur_script; /* SHA1 of the script currently running, or NULL */
|
||
dict *lua_scripts; /* A dictionary of SHA1 -> Lua scripts */
|
||
unsigned long long lua_scripts_mem; /* Cached scripts' memory + oh */
|
||
mstime_t lua_time_limit; /* Script timeout in milliseconds */
|
||
mstime_t lua_time_start; /* Start time of script, milliseconds time */
|
||
int lua_write_dirty; /* True if a write command was called during the
|
||
execution of the current script. */
|
||
int lua_random_dirty; /* True if a random command was called during the
|
||
execution of the current script. */
|
||
int lua_replicate_commands; /* True if we are doing single commands repl. */
|
||
int lua_multi_emitted;/* True if we already proagated MULTI. */
|
||
int lua_repl; /* Script replication flags for redis.set_repl(). */
|
||
int lua_timedout; /* True if we reached the time limit for script
|
||
execution. */
|
||
int lua_kill; /* Kill the script if true. */
|
||
int lua_always_replicate_commands; /* Default replication type. */
|
||
int lua_oom; /* OOM detected when script start? */
|
||
/* Lazy free */
|
||
int lazyfree_lazy_eviction;
|
||
int lazyfree_lazy_expire;
|
||
int lazyfree_lazy_server_del;
|
||
int lazyfree_lazy_user_del;
|
||
/* Latency monitor */
|
||
long long latency_monitor_threshold;
|
||
dict *latency_events;
|
||
/* ACLs */
|
||
char *acl_filename; /* ACL Users file. NULL if not configured. */
|
||
unsigned long acllog_max_len; /* Maximum length of the ACL LOG list. */
|
||
sds requirepass; /* Remember the cleartext password set with the
|
||
old "requirepass" directive for backward
|
||
compatibility with Redis <= 5. */
|
||
/* Assert & bug reporting */
|
||
const char *assert_failed;
|
||
const 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 */
|
||
/* System hardware info */
|
||
size_t system_memory_size; /* Total memory in system as reported by OS */
|
||
/* TLS Configuration */
|
||
int tls_cluster;
|
||
int tls_replication;
|
||
int tls_auth_clients;
|
||
redisTLSContextConfig tls_ctx_config;
|
||
/* cpu affinity */
|
||
char *server_cpulist; /* cpu affinity list of redis server main/io thread. */
|
||
char *bio_cpulist; /* cpu affinity list of bio thread. */
|
||
char *aof_rewrite_cpulist; /* cpu affinity list of aof rewrite process. */
|
||
char *bgsave_cpulist; /* cpu affinity list of bgsave process. */
|
||
};
|
||
|
||
typedef struct pubsubPattern {
|
||
client *client;
|
||
robj *pattern;
|
||
} pubsubPattern;
|
||
|
||
typedef void redisCommandProc(client *c);
|
||
typedef int *redisGetKeysProc(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
struct redisCommand {
|
||
char *name;
|
||
redisCommandProc *proc;
|
||
int arity;
|
||
char *sflags; /* Flags as string representation, one char per flag. */
|
||
uint64_t flags; /* The actual flags, obtained from the 'sflags' field. */
|
||
/* Use a function to determine keys arguments in a command line.
|
||
* Used for Redis Cluster redirect. */
|
||
redisGetKeysProc *getkeys_proc;
|
||
/* What keys should be loaded in background when calling this command? */
|
||
int firstkey; /* The first argument that's a key (0 = no keys) */
|
||
int lastkey; /* The last argument that's a key */
|
||
int keystep; /* The step between first and last key */
|
||
long long microseconds, calls;
|
||
int id; /* Command ID. This is a progressive ID starting from 0 that
|
||
is assigned at runtime, and is used in order to check
|
||
ACLs. A connection is able to execute a given command if
|
||
the user associated to the connection has this command
|
||
bit set in the bitmap of allowed commands. */
|
||
};
|
||
|
||
struct redisFunctionSym {
|
||
char *name;
|
||
unsigned long pointer;
|
||
};
|
||
|
||
typedef struct _redisSortObject {
|
||
robj *obj;
|
||
union {
|
||
double score;
|
||
robj *cmpobj;
|
||
} u;
|
||
} redisSortObject;
|
||
|
||
typedef struct _redisSortOperation {
|
||
int type;
|
||
robj *pattern;
|
||
} redisSortOperation;
|
||
|
||
/* Structure to hold list iteration abstraction. */
|
||
typedef struct {
|
||
robj *subject;
|
||
unsigned char encoding;
|
||
unsigned char direction; /* Iteration direction */
|
||
quicklistIter *iter;
|
||
} listTypeIterator;
|
||
|
||
/* Structure for an entry while iterating over a list. */
|
||
typedef struct {
|
||
listTypeIterator *li;
|
||
quicklistEntry entry; /* Entry in quicklist */
|
||
} listTypeEntry;
|
||
|
||
/* Structure to hold set iteration abstraction. */
|
||
typedef struct {
|
||
robj *subject;
|
||
int encoding;
|
||
int ii; /* intset iterator */
|
||
dictIterator *di;
|
||
} setTypeIterator;
|
||
|
||
/* Structure to hold hash iteration abstraction. Note that iteration over
|
||
* hashes involves both fields and values. Because it is possible that
|
||
* 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 *fptr, *vptr;
|
||
|
||
dictIterator *di;
|
||
dictEntry *de;
|
||
} hashTypeIterator;
|
||
|
||
#include "stream.h" /* Stream data type header file. */
|
||
|
||
#define OBJ_HASH_KEY 1
|
||
#define OBJ_HASH_VALUE 2
|
||
|
||
/*-----------------------------------------------------------------------------
|
||
* Extern declarations
|
||
*----------------------------------------------------------------------------*/
|
||
|
||
extern struct redisServer server;
|
||
extern struct sharedObjectsStruct shared;
|
||
extern dictType objectKeyPointerValueDictType;
|
||
extern dictType objectKeyHeapPointerValueDictType;
|
||
extern dictType setDictType;
|
||
extern dictType zsetDictType;
|
||
extern dictType clusterNodesDictType;
|
||
extern dictType clusterNodesBlackListDictType;
|
||
extern dictType dbDictType;
|
||
extern dictType shaScriptObjectDictType;
|
||
extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
|
||
extern dictType hashDictType;
|
||
extern dictType replScriptCacheDictType;
|
||
extern dictType keyptrDictType;
|
||
extern dictType modulesDictType;
|
||
|
||
/*-----------------------------------------------------------------------------
|
||
* Functions prototypes
|
||
*----------------------------------------------------------------------------*/
|
||
|
||
/* Modules */
|
||
void moduleInitModulesSystem(void);
|
||
int moduleLoad(const char *path, void **argv, int argc);
|
||
void moduleLoadFromQueue(void);
|
||
int *moduleGetCommandKeysViaAPI(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
moduleType *moduleTypeLookupModuleByID(uint64_t id);
|
||
void moduleTypeNameByID(char *name, uint64_t moduleid);
|
||
void moduleFreeContext(struct RedisModuleCtx *ctx);
|
||
void unblockClientFromModule(client *c);
|
||
void moduleHandleBlockedClients(void);
|
||
void moduleBlockedClientTimedOut(client *c);
|
||
void moduleBlockedClientPipeReadable(aeEventLoop *el, int fd, void *privdata, int mask);
|
||
size_t moduleCount(void);
|
||
void moduleAcquireGIL(void);
|
||
void moduleReleaseGIL(void);
|
||
void moduleNotifyKeyspaceEvent(int type, const char *event, robj *key, int dbid);
|
||
void moduleCallCommandFilters(client *c);
|
||
void ModuleForkDoneHandler(int exitcode, int bysignal);
|
||
int TerminateModuleForkChild(int child_pid, int wait);
|
||
ssize_t rdbSaveModulesAux(rio *rdb, int when);
|
||
int moduleAllDatatypesHandleErrors();
|
||
sds modulesCollectInfo(sds info, const char *section, int for_crash_report, int sections);
|
||
void moduleFireServerEvent(uint64_t eid, int subid, void *data);
|
||
void processModuleLoadingProgressEvent(int is_aof);
|
||
int moduleTryServeClientBlockedOnKey(client *c, robj *key);
|
||
void moduleUnblockClient(client *c);
|
||
int moduleClientIsBlockedOnKeys(client *c);
|
||
void moduleNotifyUserChanged(client *c);
|
||
|
||
/* Utils */
|
||
long long ustime(void);
|
||
long long mstime(void);
|
||
void getRandomHexChars(char *p, size_t len);
|
||
void getRandomBytes(unsigned char *p, size_t len);
|
||
uint64_t crc64(uint64_t crc, const unsigned char *s, uint64_t l);
|
||
void exitFromChild(int retcode);
|
||
size_t redisPopcount(void *s, long count);
|
||
void redisSetProcTitle(char *title);
|
||
int redisCommunicateSystemd(const char *sd_notify_msg);
|
||
void redisSetCpuAffinity(const char *cpulist);
|
||
|
||
/* networking.c -- Networking and Client related operations */
|
||
client *createClient(connection *conn);
|
||
void closeTimedoutClients(void);
|
||
void freeClient(client *c);
|
||
void freeClientAsync(client *c);
|
||
void resetClient(client *c);
|
||
void sendReplyToClient(connection *conn);
|
||
void *addReplyDeferredLen(client *c);
|
||
void setDeferredArrayLen(client *c, void *node, long length);
|
||
void setDeferredMapLen(client *c, void *node, long length);
|
||
void setDeferredSetLen(client *c, void *node, long length);
|
||
void setDeferredAttributeLen(client *c, void *node, long length);
|
||
void setDeferredPushLen(client *c, void *node, long length);
|
||
void processInputBuffer(client *c);
|
||
void processGopherRequest(client *c);
|
||
void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask);
|
||
void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask);
|
||
void acceptTLSHandler(aeEventLoop *el, int fd, void *privdata, int mask);
|
||
void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask);
|
||
void readQueryFromClient(connection *conn);
|
||
void addReplyNull(client *c);
|
||
void addReplyNullArray(client *c);
|
||
void addReplyBool(client *c, int b);
|
||
void addReplyVerbatim(client *c, const char *s, size_t len, const char *ext);
|
||
void addReplyProto(client *c, const char *s, size_t len);
|
||
void AddReplyFromClient(client *c, client *src);
|
||
void addReplyBulk(client *c, robj *obj);
|
||
void addReplyBulkCString(client *c, const char *s);
|
||
void addReplyBulkCBuffer(client *c, const void *p, size_t len);
|
||
void addReplyBulkLongLong(client *c, long long ll);
|
||
void addReply(client *c, robj *obj);
|
||
void addReplySds(client *c, sds s);
|
||
void addReplyBulkSds(client *c, sds s);
|
||
void addReplyError(client *c, const char *err);
|
||
void addReplyStatus(client *c, const char *status);
|
||
void addReplyDouble(client *c, double d);
|
||
void addReplyHumanLongDouble(client *c, long double d);
|
||
void addReplyLongLong(client *c, long long ll);
|
||
void addReplyArrayLen(client *c, long length);
|
||
void addReplyMapLen(client *c, long length);
|
||
void addReplySetLen(client *c, long length);
|
||
void addReplyAttributeLen(client *c, long length);
|
||
void addReplyPushLen(client *c, long length);
|
||
void addReplyHelp(client *c, const char **help);
|
||
void addReplySubcommandSyntaxError(client *c);
|
||
void addReplyLoadedModules(client *c);
|
||
void copyClientOutputBuffer(client *dst, client *src);
|
||
size_t sdsZmallocSize(sds s);
|
||
size_t getStringObjectSdsUsedMemory(robj *o);
|
||
void freeClientReplyValue(void *o);
|
||
void *dupClientReplyValue(void *o);
|
||
void getClientsMaxBuffers(unsigned long *longest_output_list,
|
||
unsigned long *biggest_input_buffer);
|
||
char *getClientPeerId(client *client);
|
||
sds catClientInfoString(sds s, client *client);
|
||
sds getAllClientsInfoString(int type);
|
||
void rewriteClientCommandVector(client *c, int argc, ...);
|
||
void rewriteClientCommandArgument(client *c, int i, robj *newval);
|
||
void replaceClientCommandVector(client *c, int argc, robj **argv);
|
||
unsigned long getClientOutputBufferMemoryUsage(client *c);
|
||
int freeClientsInAsyncFreeQueue(void);
|
||
void asyncCloseClientOnOutputBufferLimitReached(client *c);
|
||
int getClientType(client *c);
|
||
int getClientTypeByName(char *name);
|
||
char *getClientTypeName(int class);
|
||
void flushSlavesOutputBuffers(void);
|
||
void disconnectSlaves(void);
|
||
int listenToPort(int port, int *fds, int *count);
|
||
void pauseClients(mstime_t duration);
|
||
int clientsArePaused(void);
|
||
void processEventsWhileBlocked(void);
|
||
int handleClientsWithPendingWrites(void);
|
||
int handleClientsWithPendingWritesUsingThreads(void);
|
||
int handleClientsWithPendingReadsUsingThreads(void);
|
||
int stopThreadedIOIfNeeded(void);
|
||
int clientHasPendingReplies(client *c);
|
||
void unlinkClient(client *c);
|
||
int writeToClient(client *c, int handler_installed);
|
||
void linkClient(client *c);
|
||
void protectClient(client *c);
|
||
void unprotectClient(client *c);
|
||
void initThreadedIO(void);
|
||
client *lookupClientByID(uint64_t id);
|
||
|
||
#ifdef __GNUC__
|
||
void addReplyErrorFormat(client *c, const char *fmt, ...)
|
||
__attribute__((format(printf, 2, 3)));
|
||
void addReplyStatusFormat(client *c, const char *fmt, ...)
|
||
__attribute__((format(printf, 2, 3)));
|
||
#else
|
||
void addReplyErrorFormat(client *c, const char *fmt, ...);
|
||
void addReplyStatusFormat(client *c, const char *fmt, ...);
|
||
#endif
|
||
|
||
/* Client side caching (tracking mode) */
|
||
void enableTracking(client *c, uint64_t redirect_to, uint64_t options, robj **prefix, size_t numprefix);
|
||
void disableTracking(client *c);
|
||
void trackingRememberKeys(client *c);
|
||
void trackingInvalidateKey(client *c, robj *keyobj);
|
||
void trackingInvalidateKeysOnFlush(int dbid);
|
||
void trackingLimitUsedSlots(void);
|
||
uint64_t trackingGetTotalItems(void);
|
||
uint64_t trackingGetTotalKeys(void);
|
||
uint64_t trackingGetTotalPrefixes(void);
|
||
void trackingBroadcastInvalidationMessages(void);
|
||
|
||
/* List data type */
|
||
void listTypeTryConversion(robj *subject, robj *value);
|
||
void listTypePush(robj *subject, robj *value, int where);
|
||
robj *listTypePop(robj *subject, int where);
|
||
unsigned long listTypeLength(const robj *subject);
|
||
listTypeIterator *listTypeInitIterator(robj *subject, long index, unsigned char direction);
|
||
void listTypeReleaseIterator(listTypeIterator *li);
|
||
int listTypeNext(listTypeIterator *li, listTypeEntry *entry);
|
||
robj *listTypeGet(listTypeEntry *entry);
|
||
void listTypeInsert(listTypeEntry *entry, robj *value, int where);
|
||
int listTypeEqual(listTypeEntry *entry, robj *o);
|
||
void listTypeDelete(listTypeIterator *iter, listTypeEntry *entry);
|
||
void listTypeConvert(robj *subject, int enc);
|
||
void unblockClientWaitingData(client *c);
|
||
void popGenericCommand(client *c, int where);
|
||
|
||
/* MULTI/EXEC/WATCH... */
|
||
void unwatchAllKeys(client *c);
|
||
void initClientMultiState(client *c);
|
||
void freeClientMultiState(client *c);
|
||
void queueMultiCommand(client *c);
|
||
void touchWatchedKey(redisDb *db, robj *key);
|
||
void touchWatchedKeysOnFlush(int dbid);
|
||
void discardTransaction(client *c);
|
||
void flagTransaction(client *c);
|
||
void execCommandPropagateMulti(client *c);
|
||
void execCommandPropagateExec(client *c);
|
||
|
||
/* Redis object implementation */
|
||
void decrRefCount(robj *o);
|
||
void decrRefCountVoid(void *o);
|
||
void incrRefCount(robj *o);
|
||
robj *makeObjectShared(robj *o);
|
||
robj *resetRefCount(robj *obj);
|
||
void freeStringObject(robj *o);
|
||
void freeListObject(robj *o);
|
||
void freeSetObject(robj *o);
|
||
void freeZsetObject(robj *o);
|
||
void freeHashObject(robj *o);
|
||
robj *createObject(int type, void *ptr);
|
||
robj *createStringObject(const char *ptr, size_t len);
|
||
robj *createRawStringObject(const char *ptr, size_t len);
|
||
robj *createEmbeddedStringObject(const char *ptr, size_t len);
|
||
robj *dupStringObject(const robj *o);
|
||
int isSdsRepresentableAsLongLong(sds s, long long *llval);
|
||
int isObjectRepresentableAsLongLong(robj *o, long long *llongval);
|
||
robj *tryObjectEncoding(robj *o);
|
||
robj *getDecodedObject(robj *o);
|
||
size_t stringObjectLen(robj *o);
|
||
robj *createStringObjectFromLongLong(long long value);
|
||
robj *createStringObjectFromLongLongForValue(long long value);
|
||
robj *createStringObjectFromLongDouble(long double value, int humanfriendly);
|
||
robj *createQuicklistObject(void);
|
||
robj *createZiplistObject(void);
|
||
robj *createSetObject(void);
|
||
robj *createIntsetObject(void);
|
||
robj *createHashObject(void);
|
||
robj *createZsetObject(void);
|
||
robj *createZsetZiplistObject(void);
|
||
robj *createStreamObject(void);
|
||
robj *createModuleObject(moduleType *mt, void *value);
|
||
int getLongFromObjectOrReply(client *c, robj *o, long *target, const char *msg);
|
||
int checkType(client *c, robj *o, int type);
|
||
int getLongLongFromObjectOrReply(client *c, robj *o, long long *target, const char *msg);
|
||
int getDoubleFromObjectOrReply(client *c, robj *o, double *target, const char *msg);
|
||
int getDoubleFromObject(const robj *o, double *target);
|
||
int getLongLongFromObject(robj *o, long long *target);
|
||
int getLongDoubleFromObject(robj *o, long double *target);
|
||
int getLongDoubleFromObjectOrReply(client *c, robj *o, long double *target, const char *msg);
|
||
char *strEncoding(int encoding);
|
||
int compareStringObjects(robj *a, robj *b);
|
||
int collateStringObjects(robj *a, robj *b);
|
||
int equalStringObjects(robj *a, robj *b);
|
||
unsigned long long estimateObjectIdleTime(robj *o);
|
||
void trimStringObjectIfNeeded(robj *o);
|
||
// 判断只有对string和raw类型进行优化
|
||
#define sdsEncodedObject(objptr) (objptr->encoding == OBJ_ENCODING_RAW || objptr->encoding == OBJ_ENCODING_EMBSTR)
|
||
|
||
/* Synchronous I/O with 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 replicationFeedSlavesFromMasterStream(list *slaves, char *buf, size_t buflen);
|
||
void replicationFeedMonitors(client *c, list *monitors, int dictid, robj **argv, int argc);
|
||
void updateSlavesWaitingBgsave(int bgsaveerr, int type);
|
||
void replicationCron(void);
|
||
void replicationHandleMasterDisconnection(void);
|
||
void replicationCacheMaster(client *c);
|
||
void resizeReplicationBacklog(long long newsize);
|
||
void replicationSetMaster(char *ip, int port);
|
||
void replicationUnsetMaster(void);
|
||
void refreshGoodSlavesCount(void);
|
||
void replicationScriptCacheInit(void);
|
||
void replicationScriptCacheFlush(void);
|
||
void replicationScriptCacheAdd(sds sha1);
|
||
int replicationScriptCacheExists(sds sha1);
|
||
void processClientsWaitingReplicas(void);
|
||
void unblockClientWaitingReplicas(client *c);
|
||
int replicationCountAcksByOffset(long long offset);
|
||
void replicationSendNewlineToMaster(void);
|
||
long long replicationGetSlaveOffset(void);
|
||
char *replicationGetSlaveName(client *c);
|
||
long long getPsyncInitialOffset(void);
|
||
int replicationSetupSlaveForFullResync(client *slave, long long offset);
|
||
void changeReplicationId(void);
|
||
void clearReplicationId2(void);
|
||
void chopReplicationBacklog(void);
|
||
void replicationCacheMasterUsingMyself(void);
|
||
void feedReplicationBacklog(void *ptr, size_t len);
|
||
void showLatestBacklog(void);
|
||
void rdbPipeReadHandler(struct aeEventLoop *eventLoop, int fd, void *clientData, int mask);
|
||
void rdbPipeWriteHandlerConnRemoved(struct connection *conn);
|
||
|
||
/* Generic persistence functions */
|
||
void startLoadingFile(FILE* fp, char* filename, int rdbflags);
|
||
void startLoading(size_t size, int rdbflags);
|
||
void loadingProgress(off_t pos);
|
||
void stopLoading(int success);
|
||
void startSaving(int rdbflags);
|
||
void stopSaving(int success);
|
||
int allPersistenceDisabled(void);
|
||
|
||
#define DISK_ERROR_TYPE_AOF 1 /* Don't accept writes: AOF errors. */
|
||
#define DISK_ERROR_TYPE_RDB 2 /* Don't accept writes: RDB errors. */
|
||
#define DISK_ERROR_TYPE_NONE 0 /* No problems, we can accept writes. */
|
||
int writeCommandsDeniedByDiskError(void);
|
||
|
||
/* RDB persistence */
|
||
#include "rdb.h"
|
||
void killRDBChild(void);
|
||
|
||
/* AOF persistence */
|
||
void flushAppendOnlyFile(int force);
|
||
void feedAppendOnlyFile(struct redisCommand *cmd, int dictid, robj **argv, int argc);
|
||
void aofRemoveTempFile(pid_t childpid);
|
||
int rewriteAppendOnlyFileBackground(void);
|
||
int loadAppendOnlyFile(char *filename);
|
||
void stopAppendOnly(void);
|
||
int startAppendOnly(void);
|
||
void backgroundRewriteDoneHandler(int exitcode, int bysignal);
|
||
void aofRewriteBufferReset(void);
|
||
unsigned long aofRewriteBufferSize(void);
|
||
ssize_t aofReadDiffFromParent(void);
|
||
void killAppendOnlyChild(void);
|
||
void restartAOFAfterSYNC();
|
||
|
||
/* Child info */
|
||
void openChildInfoPipe(void);
|
||
void closeChildInfoPipe(void);
|
||
void sendChildInfo(int process_type);
|
||
void receiveChildInfo(void);
|
||
|
||
/* Fork helpers */
|
||
int redisFork();
|
||
int hasActiveChildProcess();
|
||
void sendChildCOWInfo(int ptype, char *pname);
|
||
|
||
/* acl.c -- Authentication related prototypes. */
|
||
extern rax *Users;
|
||
extern user *DefaultUser;
|
||
void ACLInit(void);
|
||
/* Return values for ACLCheckUserCredentials(). */
|
||
#define ACL_OK 0
|
||
#define ACL_DENIED_CMD 1
|
||
#define ACL_DENIED_KEY 2
|
||
#define ACL_DENIED_AUTH 3 /* Only used for ACL LOG entries. */
|
||
int ACLCheckUserCredentials(robj *username, robj *password);
|
||
int ACLAuthenticateUser(client *c, robj *username, robj *password);
|
||
unsigned long ACLGetCommandID(const char *cmdname);
|
||
user *ACLGetUserByName(const char *name, size_t namelen);
|
||
int ACLCheckCommandPerm(client *c, int *keyidxptr);
|
||
int ACLSetUser(user *u, const char *op, ssize_t oplen);
|
||
sds ACLDefaultUserFirstPassword(void);
|
||
uint64_t ACLGetCommandCategoryFlagByName(const char *name);
|
||
int ACLAppendUserForLoading(sds *argv, int argc, int *argc_err);
|
||
char *ACLSetUserStringError(void);
|
||
int ACLLoadConfiguredUsers(void);
|
||
sds ACLDescribeUser(user *u);
|
||
void ACLLoadUsersAtStartup(void);
|
||
void addReplyCommandCategories(client *c, struct redisCommand *cmd);
|
||
user *ACLCreateUnlinkedUser();
|
||
void ACLFreeUserAndKillClients(user *u);
|
||
void addACLLogEntry(client *c, int reason, int keypos, sds username);
|
||
|
||
/* Sorted sets data type */
|
||
|
||
/* Input flags. */
|
||
#define ZADD_NONE 0
|
||
#define ZADD_INCR (1<<0) /* Increment the score instead of setting it. */
|
||
#define ZADD_NX (1<<1) /* Don't touch elements not already existing. */
|
||
#define ZADD_XX (1<<2) /* Only touch elements already existing. */
|
||
|
||
/* Output flags. */
|
||
#define ZADD_NOP (1<<3) /* Operation not performed because of conditionals.*/
|
||
#define ZADD_NAN (1<<4) /* Only touch elements already existing. */
|
||
#define ZADD_ADDED (1<<5) /* The element was new and was added. */
|
||
#define ZADD_UPDATED (1<<6) /* The element already existed, score updated. */
|
||
|
||
/* Flags only used by the ZADD command but not by zsetAdd() API: */
|
||
#define ZADD_CH (1<<16) /* Return num of elements added or updated. */
|
||
|
||
/* Struct to hold a inclusive/exclusive range spec by score comparison. */
|
||
typedef struct {
|
||
double min, max;
|
||
int minex, maxex; /* are min or max exclusive? */
|
||
} zrangespec;
|
||
|
||
/* Struct to hold an inclusive/exclusive range spec by lexicographic comparison. */
|
||
typedef struct {
|
||
sds min, max; /* May be set to shared.(minstring|maxstring) */
|
||
int minex, maxex; /* are min or max exclusive? */
|
||
} zlexrangespec;
|
||
|
||
zskiplist *zslCreate(void);
|
||
void zslFree(zskiplist *zsl);
|
||
zskiplistNode *zslInsert(zskiplist *zsl, double score, sds ele);
|
||
unsigned char *zzlInsert(unsigned char *zl, sds ele, double score);
|
||
int zslDelete(zskiplist *zsl, double score, sds ele, zskiplistNode **node);
|
||
zskiplistNode *zslFirstInRange(zskiplist *zsl, zrangespec *range);
|
||
zskiplistNode *zslLastInRange(zskiplist *zsl, zrangespec *range);
|
||
double zzlGetScore(unsigned char *sptr);
|
||
void zzlNext(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
|
||
void zzlPrev(unsigned char *zl, unsigned char **eptr, unsigned char **sptr);
|
||
unsigned char *zzlFirstInRange(unsigned char *zl, zrangespec *range);
|
||
unsigned char *zzlLastInRange(unsigned char *zl, zrangespec *range);
|
||
unsigned long zsetLength(const robj *zobj);
|
||
void zsetConvert(robj *zobj, int encoding);
|
||
void zsetConvertToZiplistIfNeeded(robj *zobj, size_t maxelelen);
|
||
int zsetScore(robj *zobj, sds member, double *score);
|
||
unsigned long zslGetRank(zskiplist *zsl, double score, sds o);
|
||
int zsetAdd(robj *zobj, double score, sds ele, int *flags, double *newscore);
|
||
long zsetRank(robj *zobj, sds ele, int reverse);
|
||
int zsetDel(robj *zobj, sds ele);
|
||
void genericZpopCommand(client *c, robj **keyv, int keyc, int where, int emitkey, robj *countarg);
|
||
sds ziplistGetObject(unsigned char *sptr);
|
||
int zslValueGteMin(double value, zrangespec *spec);
|
||
int zslValueLteMax(double value, zrangespec *spec);
|
||
void zslFreeLexRange(zlexrangespec *spec);
|
||
int zslParseLexRange(robj *min, robj *max, zlexrangespec *spec);
|
||
unsigned char *zzlFirstInLexRange(unsigned char *zl, zlexrangespec *range);
|
||
unsigned char *zzlLastInLexRange(unsigned char *zl, zlexrangespec *range);
|
||
zskiplistNode *zslFirstInLexRange(zskiplist *zsl, zlexrangespec *range);
|
||
zskiplistNode *zslLastInLexRange(zskiplist *zsl, zlexrangespec *range);
|
||
int zzlLexValueGteMin(unsigned char *p, zlexrangespec *spec);
|
||
int zzlLexValueLteMax(unsigned char *p, zlexrangespec *spec);
|
||
int zslLexValueGteMin(sds value, zlexrangespec *spec);
|
||
int zslLexValueLteMax(sds value, zlexrangespec *spec);
|
||
|
||
/* Core functions */
|
||
int getMaxmemoryState(size_t *total, size_t *logical, size_t *tofree, float *level);
|
||
size_t freeMemoryGetNotCountedMemory();
|
||
int freeMemoryIfNeeded(void);
|
||
int freeMemoryIfNeededAndSafe(void);
|
||
int processCommand(client *c);
|
||
void setupSignalHandlers(void);
|
||
struct redisCommand *lookupCommand(sds name);
|
||
struct redisCommand *lookupCommandByCString(char *s);
|
||
struct redisCommand *lookupCommandOrOriginal(sds name);
|
||
void call(client *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);
|
||
void redisOpArrayInit(redisOpArray *oa);
|
||
void redisOpArrayFree(redisOpArray *oa);
|
||
void forceCommandPropagation(client *c, int flags);
|
||
void preventCommandPropagation(client *c);
|
||
void preventCommandAOF(client *c);
|
||
void preventCommandReplication(client *c);
|
||
int prepareForShutdown();
|
||
#ifdef __GNUC__
|
||
void serverLog(int level, const char *fmt, ...)
|
||
__attribute__((format(printf, 2, 3)));
|
||
#else
|
||
void serverLog(int level, const char *fmt, ...);
|
||
#endif
|
||
void serverLogRaw(int level, const char *msg);
|
||
void serverLogFromHandler(int level, const char *msg);
|
||
void usage(void);
|
||
void updateDictResizePolicy(void);
|
||
int htNeedsResize(dict *dict);
|
||
void populateCommandTable(void);
|
||
void resetCommandTableStats(void);
|
||
void adjustOpenFilesLimit(void);
|
||
void closeListeningSockets(int unlink_unix_socket);
|
||
void updateCachedTime(int update_daylight_info);
|
||
void resetServerStats(void);
|
||
void activeDefragCycle(void);
|
||
unsigned int getLRUClock(void);
|
||
unsigned int LRU_CLOCK(void);
|
||
const char *evictPolicyToString(void);
|
||
struct redisMemOverhead *getMemoryOverheadData(void);
|
||
void freeMemoryOverheadData(struct redisMemOverhead *mh);
|
||
void checkChildrenDone(void);
|
||
|
||
#define RESTART_SERVER_NONE 0
|
||
#define RESTART_SERVER_GRACEFULLY (1<<0) /* Do proper shutdown. */
|
||
#define RESTART_SERVER_CONFIG_REWRITE (1<<1) /* CONFIG REWRITE before restart.*/
|
||
int restartServer(int flags, mstime_t delay);
|
||
|
||
/* Set data type */
|
||
robj *setTypeCreate(sds value);
|
||
int setTypeAdd(robj *subject, sds value);
|
||
int setTypeRemove(robj *subject, sds value);
|
||
int setTypeIsMember(robj *subject, sds value);
|
||
setTypeIterator *setTypeInitIterator(robj *subject);
|
||
void setTypeReleaseIterator(setTypeIterator *si);
|
||
int setTypeNext(setTypeIterator *si, sds *sdsele, int64_t *llele);
|
||
sds setTypeNextObject(setTypeIterator *si);
|
||
int setTypeRandomElement(robj *setobj, sds *sdsele, int64_t *llele);
|
||
unsigned long setTypeRandomElements(robj *set, unsigned long count, robj *aux_set);
|
||
unsigned long setTypeSize(const robj *subject);
|
||
void setTypeConvert(robj *subject, int enc);
|
||
|
||
/* Hash data type */
|
||
#define HASH_SET_TAKE_FIELD (1<<0)
|
||
#define HASH_SET_TAKE_VALUE (1<<1)
|
||
#define HASH_SET_COPY 0
|
||
|
||
void hashTypeConvert(robj *o, int enc);
|
||
void hashTypeTryConversion(robj *subject, robj **argv, int start, int end);
|
||
int hashTypeExists(robj *o, sds key);
|
||
int hashTypeDelete(robj *o, sds key);
|
||
unsigned long hashTypeLength(const robj *o);
|
||
hashTypeIterator *hashTypeInitIterator(robj *subject);
|
||
void hashTypeReleaseIterator(hashTypeIterator *hi);
|
||
int hashTypeNext(hashTypeIterator *hi);
|
||
void hashTypeCurrentFromZiplist(hashTypeIterator *hi, int what,
|
||
unsigned char **vstr,
|
||
unsigned int *vlen,
|
||
long long *vll);
|
||
sds hashTypeCurrentFromHashTable(hashTypeIterator *hi, int what);
|
||
void hashTypeCurrentObject(hashTypeIterator *hi, int what, unsigned char **vstr, unsigned int *vlen, long long *vll);
|
||
sds hashTypeCurrentObjectNewSds(hashTypeIterator *hi, int what);
|
||
robj *hashTypeLookupWriteOrCreate(client *c, robj *key);
|
||
robj *hashTypeGetValueObject(robj *o, sds field);
|
||
int hashTypeSet(robj *o, sds field, sds value, int flags);
|
||
|
||
/* Pub / Sub */
|
||
int pubsubUnsubscribeAllChannels(client *c, int notify);
|
||
int pubsubUnsubscribeAllPatterns(client *c, int notify);
|
||
void freePubsubPattern(void *p);
|
||
int listMatchPubsubPattern(void *a, void *b);
|
||
int pubsubPublishMessage(robj *channel, robj *message);
|
||
void addReplyPubsubMessage(client *c, robj *channel, robj *msg);
|
||
|
||
/* Keyspace events notification */
|
||
void notifyKeyspaceEvent(int type, char *event, robj *key, int dbid);
|
||
int keyspaceEventsStringToFlags(char *classes);
|
||
sds keyspaceEventsFlagsToString(int flags);
|
||
|
||
/* Configuration */
|
||
void loadServerConfig(char *filename, char *options);
|
||
void appendServerSaveParams(time_t seconds, int changes);
|
||
void resetServerSaveParams(void);
|
||
struct rewriteConfigState; /* Forward declaration to export API. */
|
||
void rewriteConfigRewriteLine(struct rewriteConfigState *state, const char *option, sds line, int force);
|
||
int rewriteConfig(char *path);
|
||
void initConfigValues();
|
||
|
||
/* db.c -- Keyspace access API */
|
||
int removeExpire(redisDb *db, robj *key);
|
||
void propagateExpire(redisDb *db, robj *key, int lazy);
|
||
int expireIfNeeded(redisDb *db, robj *key);
|
||
long long getExpire(redisDb *db, robj *key);
|
||
void setExpire(client *c, redisDb *db, robj *key, long long when);
|
||
robj *lookupKey(redisDb *db, robj *key, int flags);
|
||
robj *lookupKeyRead(redisDb *db, robj *key);
|
||
robj *lookupKeyWrite(redisDb *db, robj *key);
|
||
robj *lookupKeyReadOrReply(client *c, robj *key, robj *reply);
|
||
robj *lookupKeyWriteOrReply(client *c, robj *key, robj *reply);
|
||
robj *lookupKeyReadWithFlags(redisDb *db, robj *key, int flags);
|
||
robj *lookupKeyWriteWithFlags(redisDb *db, robj *key, int flags);
|
||
robj *objectCommandLookup(client *c, robj *key);
|
||
robj *objectCommandLookupOrReply(client *c, robj *key, robj *reply);
|
||
int objectSetLRUOrLFU(robj *val, long long lfu_freq, long long lru_idle,
|
||
long long lru_clock, int lru_multiplier);
|
||
#define LOOKUP_NONE 0
|
||
#define LOOKUP_NOTOUCH (1<<0)
|
||
void dbAdd(redisDb *db, robj *key, robj *val);
|
||
int dbAddRDBLoad(redisDb *db, sds key, robj *val);
|
||
void dbOverwrite(redisDb *db, robj *key, robj *val);
|
||
void genericSetKey(client *c, redisDb *db, robj *key, robj *val, int keepttl, int signal);
|
||
void setKey(client *c, redisDb *db, robj *key, robj *val);
|
||
int dbExists(redisDb *db, robj *key);
|
||
robj *dbRandomKey(redisDb *db);
|
||
int dbSyncDelete(redisDb *db, robj *key);
|
||
int dbDelete(redisDb *db, robj *key);
|
||
robj *dbUnshareStringValue(redisDb *db, robj *key, robj *o);
|
||
|
||
#define EMPTYDB_NO_FLAGS 0 /* No flags. */
|
||
#define EMPTYDB_ASYNC (1<<0) /* Reclaim memory in another thread. */
|
||
#define EMPTYDB_BACKUP (1<<2) /* DB array is a backup for REPL_DISKLESS_LOAD_SWAPDB. */
|
||
long long emptyDb(int dbnum, int flags, void(callback)(void*));
|
||
long long emptyDbGeneric(redisDb *dbarray, int dbnum, int flags, void(callback)(void*));
|
||
void flushAllDataAndResetRDB(int flags);
|
||
long long dbTotalServerKeyCount();
|
||
|
||
int selectDb(client *c, int id);
|
||
void signalModifiedKey(client *c, redisDb *db, robj *key);
|
||
void signalFlushedDb(int dbid);
|
||
unsigned int getKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count);
|
||
unsigned int countKeysInSlot(unsigned int hashslot);
|
||
unsigned int delKeysInSlot(unsigned int hashslot);
|
||
int verifyClusterConfigWithData(void);
|
||
void scanGenericCommand(client *c, robj *o, unsigned long cursor);
|
||
int parseScanCursorOrReply(client *c, robj *o, unsigned long *cursor);
|
||
void slotToKeyAdd(sds key);
|
||
void slotToKeyDel(sds key);
|
||
void slotToKeyFlush(void);
|
||
int dbAsyncDelete(redisDb *db, robj *key);
|
||
void emptyDbAsync(redisDb *db);
|
||
void slotToKeyFlushAsync(void);
|
||
size_t lazyfreeGetPendingObjectsCount(void);
|
||
void freeObjAsync(robj *o);
|
||
|
||
/* API to get key arguments from commands */
|
||
int *getKeysFromCommand(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
void getKeysFreeResult(int *result);
|
||
int *zunionInterGetKeys(struct redisCommand *cmd,robj **argv, int argc, int *numkeys);
|
||
int *evalGetKeys(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
int *sortGetKeys(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
int *migrateGetKeys(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
int *georadiusGetKeys(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
int *xreadGetKeys(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
int *memoryGetKeys(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
int *lcsGetKeys(struct redisCommand *cmd, robj **argv, int argc, int *numkeys);
|
||
|
||
/* Cluster */
|
||
void clusterInit(void);
|
||
unsigned short crc16(const char *buf, int len);
|
||
unsigned int keyHashSlot(char *key, int keylen);
|
||
void clusterCron(void);
|
||
void clusterPropagatePublish(robj *channel, robj *message);
|
||
void migrateCloseTimedoutSockets(void);
|
||
void clusterBeforeSleep(void);
|
||
int clusterSendModuleMessageToTarget(const char *target, uint64_t module_id, uint8_t type, unsigned char *payload, uint32_t len);
|
||
|
||
/* Sentinel */
|
||
void initSentinelConfig(void);
|
||
void initSentinel(void);
|
||
void sentinelTimer(void);
|
||
char *sentinelHandleConfiguration(char **argv, int argc);
|
||
void sentinelIsRunning(void);
|
||
|
||
/* redis-check-rdb & aof */
|
||
int redis_check_rdb(char *rdbfilename, FILE *fp);
|
||
int redis_check_rdb_main(int argc, char **argv, FILE *fp);
|
||
int redis_check_aof_main(int argc, char **argv);
|
||
|
||
/* Scripting */
|
||
void scriptingInit(int setup);
|
||
int ldbRemoveChild(pid_t pid);
|
||
void ldbKillForkedSessions(void);
|
||
int ldbPendingChildren(void);
|
||
sds luaCreateFunction(client *c, lua_State *lua, robj *body);
|
||
|
||
/* Blocked clients */
|
||
void processUnblockedClients(void);
|
||
void blockClient(client *c, int btype);
|
||
void unblockClient(client *c);
|
||
void queueClientForReprocessing(client *c);
|
||
void replyToBlockedClientTimedOut(client *c);
|
||
int getTimeoutFromObjectOrReply(client *c, robj *object, mstime_t *timeout, int unit);
|
||
void disconnectAllBlockedClients(void);
|
||
void handleClientsBlockedOnKeys(void);
|
||
void signalKeyAsReady(redisDb *db, robj *key);
|
||
void blockForKeys(client *c, int btype, robj **keys, int numkeys, mstime_t timeout, robj *target, streamID *ids);
|
||
|
||
/* timeout.c -- Blocked clients timeout and connections timeout. */
|
||
void addClientToTimeoutTable(client *c);
|
||
void removeClientFromTimeoutTable(client *c);
|
||
void handleBlockedClientsTimeout(void);
|
||
int clientsCronHandleTimeout(client *c, mstime_t now_ms);
|
||
|
||
/* expire.c -- Handling of expired keys */
|
||
void activeExpireCycle(int type);
|
||
void expireSlaveKeys(void);
|
||
void rememberSlaveKeyWithExpire(redisDb *db, robj *key);
|
||
void flushSlaveKeysWithExpireList(void);
|
||
size_t getSlaveKeyWithExpireCount(void);
|
||
|
||
/* evict.c -- maxmemory handling and LRU eviction. */
|
||
void evictionPoolAlloc(void);
|
||
#define LFU_INIT_VAL 5
|
||
unsigned long LFUGetTimeInMinutes(void);
|
||
uint8_t LFULogIncr(uint8_t value);
|
||
unsigned long LFUDecrAndReturn(robj *o);
|
||
|
||
/* Keys hashing / comparison functions for dict.c hash tables. */
|
||
uint64_t dictSdsHash(const void *key);
|
||
int dictSdsKeyCompare(void *privdata, const void *key1, const void *key2);
|
||
void dictSdsDestructor(void *privdata, void *val);
|
||
|
||
/* Git SHA1 */
|
||
char *redisGitSHA1(void);
|
||
char *redisGitDirty(void);
|
||
uint64_t redisBuildId(void);
|
||
char *redisBuildIdString(void);
|
||
|
||
/* Commands prototypes */
|
||
void authCommand(client *c);
|
||
void pingCommand(client *c);
|
||
void echoCommand(client *c);
|
||
void commandCommand(client *c);
|
||
void setCommand(client *c);
|
||
void setnxCommand(client *c);
|
||
void setexCommand(client *c);
|
||
void psetexCommand(client *c);
|
||
void getCommand(client *c);
|
||
void delCommand(client *c);
|
||
void unlinkCommand(client *c);
|
||
void existsCommand(client *c);
|
||
void setbitCommand(client *c);
|
||
void getbitCommand(client *c);
|
||
void bitfieldCommand(client *c);
|
||
void bitfieldroCommand(client *c);
|
||
void setrangeCommand(client *c);
|
||
void getrangeCommand(client *c);
|
||
void incrCommand(client *c);
|
||
void decrCommand(client *c);
|
||
void incrbyCommand(client *c);
|
||
void decrbyCommand(client *c);
|
||
void incrbyfloatCommand(client *c);
|
||
void selectCommand(client *c);
|
||
void swapdbCommand(client *c);
|
||
void randomkeyCommand(client *c);
|
||
void keysCommand(client *c);
|
||
void scanCommand(client *c);
|
||
void dbsizeCommand(client *c);
|
||
void lastsaveCommand(client *c);
|
||
void saveCommand(client *c);
|
||
void bgsaveCommand(client *c);
|
||
void bgrewriteaofCommand(client *c);
|
||
void shutdownCommand(client *c);
|
||
void moveCommand(client *c);
|
||
void renameCommand(client *c);
|
||
void renamenxCommand(client *c);
|
||
void lpushCommand(client *c);
|
||
void rpushCommand(client *c);
|
||
void lpushxCommand(client *c);
|
||
void rpushxCommand(client *c);
|
||
void linsertCommand(client *c);
|
||
void lpopCommand(client *c);
|
||
void rpopCommand(client *c);
|
||
void llenCommand(client *c);
|
||
void lindexCommand(client *c);
|
||
void lrangeCommand(client *c);
|
||
void ltrimCommand(client *c);
|
||
void typeCommand(client *c);
|
||
void lsetCommand(client *c);
|
||
void saddCommand(client *c);
|
||
void sremCommand(client *c);
|
||
void smoveCommand(client *c);
|
||
void sismemberCommand(client *c);
|
||
void scardCommand(client *c);
|
||
void spopCommand(client *c);
|
||
void srandmemberCommand(client *c);
|
||
void sinterCommand(client *c);
|
||
void sinterstoreCommand(client *c);
|
||
void sunionCommand(client *c);
|
||
void sunionstoreCommand(client *c);
|
||
void sdiffCommand(client *c);
|
||
void sdiffstoreCommand(client *c);
|
||
void sscanCommand(client *c);
|
||
void syncCommand(client *c);
|
||
void flushdbCommand(client *c);
|
||
void flushallCommand(client *c);
|
||
void sortCommand(client *c);
|
||
void lremCommand(client *c);
|
||
void lposCommand(client *c);
|
||
void rpoplpushCommand(client *c);
|
||
void infoCommand(client *c);
|
||
void mgetCommand(client *c);
|
||
void monitorCommand(client *c);
|
||
void expireCommand(client *c);
|
||
void expireatCommand(client *c);
|
||
void pexpireCommand(client *c);
|
||
void pexpireatCommand(client *c);
|
||
void getsetCommand(client *c);
|
||
void ttlCommand(client *c);
|
||
void touchCommand(client *c);
|
||
void pttlCommand(client *c);
|
||
void persistCommand(client *c);
|
||
void replicaofCommand(client *c);
|
||
void roleCommand(client *c);
|
||
void debugCommand(client *c);
|
||
void msetCommand(client *c);
|
||
void msetnxCommand(client *c);
|
||
void zaddCommand(client *c);
|
||
void zincrbyCommand(client *c);
|
||
void zrangeCommand(client *c);
|
||
void zrangebyscoreCommand(client *c);
|
||
void zrevrangebyscoreCommand(client *c);
|
||
void zrangebylexCommand(client *c);
|
||
void zrevrangebylexCommand(client *c);
|
||
void zcountCommand(client *c);
|
||
void zlexcountCommand(client *c);
|
||
void zrevrangeCommand(client *c);
|
||
void zcardCommand(client *c);
|
||
void zremCommand(client *c);
|
||
void zscoreCommand(client *c);
|
||
void zremrangebyscoreCommand(client *c);
|
||
void zremrangebylexCommand(client *c);
|
||
void zpopminCommand(client *c);
|
||
void zpopmaxCommand(client *c);
|
||
void bzpopminCommand(client *c);
|
||
void bzpopmaxCommand(client *c);
|
||
void multiCommand(client *c);
|
||
void execCommand(client *c);
|
||
void discardCommand(client *c);
|
||
void blpopCommand(client *c);
|
||
void brpopCommand(client *c);
|
||
void brpoplpushCommand(client *c);
|
||
void appendCommand(client *c);
|
||
void strlenCommand(client *c);
|
||
void zrankCommand(client *c);
|
||
void zrevrankCommand(client *c);
|
||
void hsetCommand(client *c);
|
||
void hsetnxCommand(client *c);
|
||
void hgetCommand(client *c);
|
||
void hmsetCommand(client *c);
|
||
void hmgetCommand(client *c);
|
||
void hdelCommand(client *c);
|
||
void hlenCommand(client *c);
|
||
void hstrlenCommand(client *c);
|
||
void zremrangebyrankCommand(client *c);
|
||
void zunionstoreCommand(client *c);
|
||
void zinterstoreCommand(client *c);
|
||
void zscanCommand(client *c);
|
||
void hkeysCommand(client *c);
|
||
void hvalsCommand(client *c);
|
||
void hgetallCommand(client *c);
|
||
void hexistsCommand(client *c);
|
||
void hscanCommand(client *c);
|
||
void configCommand(client *c);
|
||
void hincrbyCommand(client *c);
|
||
void hincrbyfloatCommand(client *c);
|
||
void subscribeCommand(client *c);
|
||
void unsubscribeCommand(client *c);
|
||
void psubscribeCommand(client *c);
|
||
void punsubscribeCommand(client *c);
|
||
void publishCommand(client *c);
|
||
void pubsubCommand(client *c);
|
||
void watchCommand(client *c);
|
||
void unwatchCommand(client *c);
|
||
void clusterCommand(client *c);
|
||
void restoreCommand(client *c);
|
||
void migrateCommand(client *c);
|
||
void askingCommand(client *c);
|
||
void readonlyCommand(client *c);
|
||
void readwriteCommand(client *c);
|
||
void dumpCommand(client *c);
|
||
void objectCommand(client *c);
|
||
void memoryCommand(client *c);
|
||
void clientCommand(client *c);
|
||
void helloCommand(client *c);
|
||
void evalCommand(client *c);
|
||
void evalShaCommand(client *c);
|
||
void scriptCommand(client *c);
|
||
void timeCommand(client *c);
|
||
void bitopCommand(client *c);
|
||
void bitcountCommand(client *c);
|
||
void bitposCommand(client *c);
|
||
void replconfCommand(client *c);
|
||
void waitCommand(client *c);
|
||
void geoencodeCommand(client *c);
|
||
void geodecodeCommand(client *c);
|
||
void georadiusbymemberCommand(client *c);
|
||
void georadiusbymemberroCommand(client *c);
|
||
void georadiusCommand(client *c);
|
||
void georadiusroCommand(client *c);
|
||
void geoaddCommand(client *c);
|
||
void geohashCommand(client *c);
|
||
void geoposCommand(client *c);
|
||
void geodistCommand(client *c);
|
||
void pfselftestCommand(client *c);
|
||
void pfaddCommand(client *c);
|
||
void pfcountCommand(client *c);
|
||
void pfmergeCommand(client *c);
|
||
void pfdebugCommand(client *c);
|
||
void latencyCommand(client *c);
|
||
void moduleCommand(client *c);
|
||
void securityWarningCommand(client *c);
|
||
void xaddCommand(client *c);
|
||
void xrangeCommand(client *c);
|
||
void xrevrangeCommand(client *c);
|
||
void xlenCommand(client *c);
|
||
void xreadCommand(client *c);
|
||
void xgroupCommand(client *c);
|
||
void xsetidCommand(client *c);
|
||
void xackCommand(client *c);
|
||
void xpendingCommand(client *c);
|
||
void xclaimCommand(client *c);
|
||
void xinfoCommand(client *c);
|
||
void xdelCommand(client *c);
|
||
void xtrimCommand(client *c);
|
||
void lolwutCommand(client *c);
|
||
void aclCommand(client *c);
|
||
void stralgoCommand(client *c);
|
||
|
||
#if defined(__GNUC__)
|
||
void *calloc(size_t count, size_t size) __attribute__ ((deprecated));
|
||
void free(void *ptr) __attribute__ ((deprecated));
|
||
void *malloc(size_t size) __attribute__ ((deprecated));
|
||
void *realloc(void *ptr, size_t size) __attribute__ ((deprecated));
|
||
#endif
|
||
|
||
/* Debugging stuff */
|
||
void _serverAssertWithInfo(const client *c, const robj *o, const char *estr, const char *file, int line);
|
||
void _serverAssert(const char *estr, const char *file, int line);
|
||
void _serverPanic(const char *file, int line, const char *msg, ...);
|
||
void bugReportStart(void);
|
||
void serverLogObjectDebugInfo(const robj *o);
|
||
void sigsegvHandler(int sig, siginfo_t *info, void *secret);
|
||
sds genRedisInfoString(const char *section);
|
||
sds genModulesInfoString(sds info);
|
||
void enableWatchdog(int period);
|
||
void disableWatchdog(void);
|
||
void watchdogScheduleSignal(int period);
|
||
void serverLogHexDump(int level, char *descr, void *value, size_t len);
|
||
int memtest_preserving_test(unsigned long *m, size_t bytes, int passes);
|
||
void mixDigest(unsigned char *digest, void *ptr, size_t len);
|
||
void xorDigest(unsigned char *digest, void *ptr, size_t len);
|
||
int populateCommandTableParseFlags(struct redisCommand *c, char *strflags);
|
||
|
||
/* TLS stuff */
|
||
void tlsInit(void);
|
||
int tlsConfigure(redisTLSContextConfig *ctx_config);
|
||
|
||
#define redisDebug(fmt, ...) \
|
||
printf("DEBUG %s:%d > " fmt "\n", __FILE__, __LINE__, __VA_ARGS__)
|
||
#define redisDebugMark() \
|
||
printf("-- MARK %s:%d --\n", __FILE__, __LINE__)
|
||
|
||
int iAmMaster(void);
|
||
|
||
#endif
|