]> git.saurik.com Git - redis.git/blobdiff - src/redis.c
added lua struct c extension
[redis.git] / src / redis.c
index f75aa791a212cbb8c55ad0b7727d202a8add88ae..765f58dad3f98081cd323c29c76178f448904d02 100644 (file)
 #include "slowlog.h"
 #include "bio.h"
 
-#ifdef HAVE_BACKTRACE
-#include <execinfo.h>
-#include <ucontext.h>
-#endif /* HAVE_BACKTRACE */
-
 #include <time.h>
 #include <signal.h>
 #include <sys/wait.h>
@@ -107,7 +102,10 @@ struct redisCommand *commandTable;
  * s: command not allowed in scripts.
  * R: random command. Command is not deterministic, that is, the same command
  *    with the same arguments, with the same key space, may have different
- *    results. For instance SPOP and RANDOMKEY are two random commands. */
+ *    results. For instance SPOP and RANDOMKEY are two random commands.
+ * S: Sort command output array if called from script, so that the output
+ *    is deterministic.
+ */
 struct redisCommand redisCommandTable[] = {
     {"get",getCommand,2,"r",0,NULL,1,1,1,0,0},
     {"set",setCommand,3,"wm",0,noPreloadGetKeys,1,1,1,0,0},
@@ -150,13 +148,13 @@ struct redisCommand redisCommandTable[] = {
     {"scard",scardCommand,2,"r",0,NULL,1,1,1,0,0},
     {"spop",spopCommand,2,"wRs",0,NULL,1,1,1,0,0},
     {"srandmember",srandmemberCommand,2,"rR",0,NULL,1,1,1,0,0},
-    {"sinter",sinterCommand,-2,"r",0,NULL,1,-1,1,0,0},
+    {"sinter",sinterCommand,-2,"rS",0,NULL,1,-1,1,0,0},
     {"sinterstore",sinterstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
-    {"sunion",sunionCommand,-2,"r",0,NULL,1,-1,1,0,0},
+    {"sunion",sunionCommand,-2,"rS",0,NULL,1,-1,1,0,0},
     {"sunionstore",sunionstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
-    {"sdiff",sdiffCommand,-2,"r",0,NULL,1,-1,1,0,0},
+    {"sdiff",sdiffCommand,-2,"rS",0,NULL,1,-1,1,0,0},
     {"sdiffstore",sdiffstoreCommand,-3,"wm",0,NULL,1,-1,1,0,0},
-    {"smembers",sinterCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"smembers",sinterCommand,2,"rS",0,NULL,1,1,1,0,0},
     {"zadd",zaddCommand,-4,"wm",0,NULL,1,1,1,0,0},
     {"zincrby",zincrbyCommand,4,"wm",0,NULL,1,1,1,0,0},
     {"zrem",zremCommand,-3,"w",0,NULL,1,1,1,0,0},
@@ -182,8 +180,8 @@ struct redisCommand redisCommandTable[] = {
     {"hincrbyfloat",hincrbyfloatCommand,4,"wm",0,NULL,1,1,1,0,0},
     {"hdel",hdelCommand,-3,"w",0,NULL,1,1,1,0,0},
     {"hlen",hlenCommand,2,"r",0,NULL,1,1,1,0,0},
-    {"hkeys",hkeysCommand,2,"r",0,NULL,1,1,1,0,0},
-    {"hvals",hvalsCommand,2,"r",0,NULL,1,1,1,0,0},
+    {"hkeys",hkeysCommand,2,"rS",0,NULL,1,1,1,0,0},
+    {"hvals",hvalsCommand,2,"rS",0,NULL,1,1,1,0,0},
     {"hgetall",hgetallCommand,2,"r",0,NULL,1,1,1,0,0},
     {"hexists",hexistsCommand,3,"r",0,NULL,1,1,1,0,0},
     {"incrby",incrbyCommand,3,"wm",0,NULL,1,1,1,0,0},
@@ -201,7 +199,7 @@ struct redisCommand redisCommandTable[] = {
     {"expireat",expireatCommand,3,"w",0,NULL,1,1,1,0,0},
     {"pexpire",pexpireCommand,3,"w",0,NULL,1,1,1,0,0},
     {"pexpireat",pexpireatCommand,3,"w",0,NULL,1,1,1,0,0},
-    {"keys",keysCommand,2,"r",0,NULL,0,0,0,0,0},
+    {"keys",keysCommand,2,"rS",0,NULL,0,0,0,0,0},
     {"dbsize",dbsizeCommand,1,"r",0,NULL,0,0,0,0,0},
     {"auth",authCommand,2,"rs",0,NULL,0,0,0,0,0},
     {"ping",pingCommand,1,"r",0,NULL,0,0,0,0,0},
@@ -218,7 +216,7 @@ struct redisCommand redisCommandTable[] = {
     {"sync",syncCommand,1,"ars",0,NULL,0,0,0,0,0},
     {"flushdb",flushdbCommand,1,"w",0,NULL,0,0,0,0,0},
     {"flushall",flushallCommand,1,"w",0,NULL,0,0,0,0,0},
-    {"sort",sortCommand,-2,"wm",0,NULL,1,1,1,0,0},
+    {"sort",sortCommand,-2,"wmS",0,NULL,1,1,1,0,0},
     {"info",infoCommand,-1,"r",0,NULL,0,0,0,0,0},
     {"monitor",monitorCommand,1,"ars",0,NULL,0,0,0,0,0},
     {"ttl",ttlCommand,2,"r",0,NULL,1,1,1,0,0},
@@ -563,7 +561,7 @@ void incrementallyRehash(void) {
  * for dict.c to resize the hash tables accordingly to the fact we have o not
  * running childs. */
 void updateDictResizePolicy(void) {
-    if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1)
+    if (server.rdb_child_pid == -1 && server.aof_child_pid == -1)
         dictEnableResize();
     else
         dictDisableResize();
@@ -673,7 +671,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
      * if we resize the HT while there is the saving child at work actually
      * a lot of memory movements in the parent will cause a lot of pages
      * copied. */
-    if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1) {
+    if (server.rdb_child_pid == -1 && server.aof_child_pid == -1) {
         if (!(loops % 10)) tryResizeHashTables();
         if (server.activerehashing) incrementallyRehash();
     }
@@ -692,14 +690,14 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
 
     /* Start a scheduled AOF rewrite if this was requested by the user while
      * a BGSAVE was in progress. */
-    if (server.bgsavechildpid == -1 && server.bgrewritechildpid == -1 &&
-        server.aofrewrite_scheduled)
+    if (server.rdb_child_pid == -1 && server.aof_child_pid == -1 &&
+        server.aof_rewrite_scheduled)
     {
         rewriteAppendOnlyFileBackground();
     }
 
     /* Check if a background saving or AOF rewrite in progress terminated. */
-    if (server.bgsavechildpid != -1 || server.bgrewritechildpid != -1) {
+    if (server.rdb_child_pid != -1 || server.aof_child_pid != -1) {
         int statloc;
         pid_t pid;
 
@@ -709,7 +707,7 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
             
             if (WIFSIGNALED(statloc)) bysignal = WTERMSIG(statloc);
 
-            if (pid == server.bgsavechildpid) {
+            if (pid == server.rdb_child_pid) {
                 backgroundSaveDoneHandler(exitcode,bysignal);
             } else {
                 backgroundRewriteDoneHandler(exitcode,bysignal);
@@ -728,21 +726,21 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
                 now-server.lastsave > sp->seconds) {
                 redisLog(REDIS_NOTICE,"%d changes in %d seconds. Saving...",
                     sp->changes, sp->seconds);
-                rdbSaveBackground(server.dbfilename);
+                rdbSaveBackground(server.rdb_filename);
                 break;
             }
          }
 
          /* Trigger an AOF rewrite if needed */
-         if (server.bgsavechildpid == -1 &&
-             server.bgrewritechildpid == -1 &&
-             server.auto_aofrewrite_perc &&
-             server.appendonly_current_size > server.auto_aofrewrite_min_size)
+         if (server.rdb_child_pid == -1 &&
+             server.aof_child_pid == -1 &&
+             server.aof_rewrite_perc &&
+             server.aof_current_size > server.aof_rewrite_min_size)
          {
-            long long base = server.auto_aofrewrite_base_size ?
-                            server.auto_aofrewrite_base_size : 1;
-            long long growth = (server.appendonly_current_size*100/base) - 100;
-            if (growth >= server.auto_aofrewrite_perc) {
+            long long base = server.aof_rewrite_base_size ?
+                            server.aof_rewrite_base_size : 1;
+            long long growth = (server.aof_current_size*100/base) - 100;
+            if (growth >= server.aof_rewrite_perc) {
                 redisLog(REDIS_NOTICE,"Starting automatic rewriting of AOF on %lld%% growth",growth);
                 rewriteAppendOnlyFileBackground();
             }
@@ -759,6 +757,9 @@ int serverCron(struct aeEventLoop *eventLoop, long long id, void *clientData) {
      * in order to guarantee a strict consistency. */
     if (server.masterhost == NULL) activeExpireCycle();
 
+    /* Close clients that need to be closed asynchronous */
+    freeClientsInAsyncFreeQueue();
+
     /* Replication cron function -- used to reconnect to master and
      * to detect transfer failures. */
     if (!(loops % 10)) replicationCron();
@@ -787,8 +788,11 @@ void beforeSleep(struct aeEventLoop *eventLoop) {
         c->flags &= ~REDIS_UNBLOCKED;
 
         /* Process remaining data in the input buffer. */
-        if (c->querybuf && sdslen(c->querybuf) > 0)
+        if (c->querybuf && sdslen(c->querybuf) > 0) {
+            server.current_client = c;
             processInputBuffer(c);
+            server.current_client = NULL;
+        }
     }
 
     /* Write the AOF buffer on disk */
@@ -856,6 +860,7 @@ void createSharedObjects(void) {
 }
 
 void initServerConfig() {
+    server.arch_bits = (sizeof(long) == 8) ? 64 : 32;
     server.port = REDIS_SERVERPORT;
     server.bindaddr = NULL;
     server.unixsocket = NULL;
@@ -873,23 +878,22 @@ void initServerConfig() {
     server.syslog_ident = zstrdup("redis");
     server.syslog_facility = LOG_LOCAL0;
     server.daemonize = 0;
-    server.appendonly = 0;
-    server.appendfsync = APPENDFSYNC_EVERYSEC;
-    server.no_appendfsync_on_rewrite = 0;
-    server.auto_aofrewrite_perc = REDIS_AUTO_AOFREWRITE_PERC;
-    server.auto_aofrewrite_min_size = REDIS_AUTO_AOFREWRITE_MIN_SIZE;
-    server.auto_aofrewrite_base_size = 0;
-    server.aofrewrite_scheduled = 0;
-    server.aof_wait_rewrite = 0;
-    server.lastfsync = time(NULL);
-    server.appendfd = -1;
-    server.appendseldb = -1; /* Make sure the first time will not match */
+    server.aof_state = REDIS_AOF_OFF;
+    server.aof_fsync = AOF_FSYNC_EVERYSEC;
+    server.aof_no_fsync_on_rewrite = 0;
+    server.aof_rewrite_perc = REDIS_AOF_REWRITE_PERC;
+    server.aof_rewrite_min_size = REDIS_AOF_REWRITE_MIN_SIZE;
+    server.aof_rewrite_base_size = 0;
+    server.aof_rewrite_scheduled = 0;
+    server.aof_last_fsync = time(NULL);
+    server.aof_fd = -1;
+    server.aof_selected_db = -1; /* Make sure the first time will not match */
     server.aof_flush_postponed_start = 0;
     server.pidfile = zstrdup("/var/run/redis.pid");
-    server.dbfilename = zstrdup("dump.rdb");
-    server.appendfilename = zstrdup("appendonly.aof");
+    server.rdb_filename = zstrdup("dump.rdb");
+    server.aof_filename = zstrdup("appendonly.aof");
     server.requirepass = NULL;
-    server.rdbcompression = 1;
+    server.rdb_compression = 1;
     server.activerehashing = 1;
     server.maxclients = REDIS_MAX_CLIENTS;
     server.bpop_blocked_clients = 0;
@@ -920,16 +924,26 @@ void initServerConfig() {
     appendServerSaveParams(300,100);  /* save after 5 minutes and 100 changes */
     appendServerSaveParams(60,10000); /* save after 1 minute and 10000 changes */
     /* Replication related */
-    server.isslave = 0;
     server.masterauth = NULL;
     server.masterhost = NULL;
     server.masterport = 6379;
     server.master = NULL;
-    server.replstate = REDIS_REPL_NONE;
+    server.repl_state = REDIS_REPL_NONE;
     server.repl_syncio_timeout = REDIS_REPL_SYNCIO_TIMEOUT;
     server.repl_serve_stale_data = 1;
     server.repl_down_since = -1;
 
+    /* Client output buffer limits */
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_NORMAL].hard_limit_bytes = 0;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_NORMAL].soft_limit_bytes = 0;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_NORMAL].soft_limit_seconds = 0;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_SLAVE].hard_limit_bytes = 1024*1024*256;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_SLAVE].soft_limit_bytes = 1024*1024*64;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_SLAVE].soft_limit_seconds = 60;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_PUBSUB].hard_limit_bytes = 1024*1024*32;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_PUBSUB].soft_limit_bytes = 1024*1024*8;
+    server.client_obuf_limits[REDIS_CLIENT_LIMIT_CLASS_PUBSUB].soft_limit_seconds = 60;
+
     /* Double constants initialization */
     R_Zero = 0.0;
     R_PosInf = 1.0/R_Zero;
@@ -1004,7 +1018,9 @@ void initServer() {
             server.syslog_facility);
     }
 
+    server.current_client = NULL;
     server.clients = listCreate();
+    server.clients_to_close = listCreate();
     server.slaves = listCreate();
     server.monitors = listCreate();
     server.unblocked_clients = listCreate();
@@ -1046,10 +1062,10 @@ void initServer() {
     listSetFreeMethod(server.pubsub_patterns,freePubsubPattern);
     listSetMatchMethod(server.pubsub_patterns,listMatchPubsubPattern);
     server.cronloops = 0;
-    server.bgsavechildpid = -1;
-    server.bgrewritechildpid = -1;
-    server.bgrewritebuf = sdsempty();
-    server.aofbuf = sdsempty();
+    server.rdb_child_pid = -1;
+    server.aof_child_pid = -1;
+    server.aof_rewrite_buf = sdsempty();
+    server.aof_buf = sdsempty();
     server.lastsave = time(NULL);
     server.dirty = 0;
     server.stat_numcommands = 0;
@@ -1069,21 +1085,30 @@ void initServer() {
     if (server.sofd > 0 && aeCreateFileEvent(server.el,server.sofd,AE_READABLE,
         acceptUnixHandler,NULL) == AE_ERR) oom("creating file event");
 
-    if (server.appendonly) {
-        server.appendfd = open(server.appendfilename,O_WRONLY|O_APPEND|O_CREAT,0644);
-        if (server.appendfd == -1) {
+    if (server.aof_state == REDIS_AOF_ON) {
+        server.aof_fd = open(server.aof_filename,
+                               O_WRONLY|O_APPEND|O_CREAT,0644);
+        if (server.aof_fd == -1) {
             redisLog(REDIS_WARNING, "Can't open the append-only file: %s",
                 strerror(errno));
             exit(1);
         }
     }
 
+    /* 32 bit instances are limited to 4GB of address space, so if there is
+     * no explicit limit in the user provided configuration we set a limit
+     * at 3.5GB using maxmemory with 'noeviction' policy'. This saves
+     * useless crashes of the Redis instance. */
+    if (server.arch_bits == 32 && server.maxmemory == 0) {
+        redisLog(REDIS_WARNING,"Warning: 32 bit instance detected but no memory limit set. Setting 3.5 GB maxmemory limit with 'noeviction' policy now.");
+        server.maxmemory = 3584LL*(1024*1024); /* 3584 MB = 3.5 GB */
+        server.maxmemory_policy = REDIS_MAXMEMORY_NO_EVICTION;
+    }
+
     if (server.cluster_enabled) clusterInit();
     scriptingInit();
     slowlogInit();
     bioInit();
-    srand(time(NULL)^getpid());
-
 }
 
 /* Populates the Redis Command Table starting from the hard coded list
@@ -1107,6 +1132,7 @@ void populateCommandTable(void) {
             case 'f': c->flags |= REDIS_CMD_FORCE_REPLICATION; break;
             case 's': c->flags |= REDIS_CMD_NOSCRIPT; break;
             case 'R': c->flags |= REDIS_CMD_RANDOM; break;
+            case 'S': c->flags |= REDIS_CMD_SORT_FOR_SCRIPT; break;
             default: redisPanic("Unsupported command flag"); break;
             }
             f++;
@@ -1145,24 +1171,34 @@ struct redisCommand *lookupCommandByCString(char *s) {
 }
 
 /* Call() is the core of Redis execution of a command */
-void call(redisClient *c) {
+void call(redisClient *c, int flags) {
     long long dirty, start = ustime(), duration;
 
     dirty = server.dirty;
     c->cmd->proc(c);
     dirty = server.dirty-dirty;
     duration = ustime()-start;
-    c->cmd->microseconds += duration;
-    slowlogPushEntryIfNeeded(c->argv,c->argc,duration);
-    c->cmd->calls++;
-
-    if (server.appendonly && dirty > 0)
-        feedAppendOnlyFile(c->cmd,c->db->id,c->argv,c->argc);
-    if ((dirty > 0 || c->cmd->flags & REDIS_CMD_FORCE_REPLICATION) &&
-        listLength(server.slaves))
-        replicationFeedSlaves(server.slaves,c->db->id,c->argv,c->argc);
-    if (listLength(server.monitors))
-        replicationFeedMonitors(server.monitors,c->db->id,c->argv,c->argc);
+
+    /* When EVAL is called loading the AOF we don't want commands called
+     * from Lua to go into the slowlog or to populate statistics. */
+    if (server.loading && c->flags & REDIS_LUA_CLIENT)
+        flags &= ~(REDIS_CALL_SLOWLOG | REDIS_CALL_STATS);
+
+    if (flags & REDIS_CALL_SLOWLOG)
+        slowlogPushEntryIfNeeded(c->argv,c->argc,duration);
+    if (flags & REDIS_CALL_STATS) {
+        c->cmd->microseconds += duration;
+        c->cmd->calls++;
+    }
+    if (flags & REDIS_CALL_PROPAGATE) {
+        if (server.aof_state != REDIS_AOF_OFF && dirty > 0)
+            feedAppendOnlyFile(c->cmd,c->db->id,c->argv,c->argc);
+        if ((dirty > 0 || c->cmd->flags & REDIS_CMD_FORCE_REPLICATION) &&
+            listLength(server.slaves))
+            replicationFeedSlaves(server.slaves,c->db->id,c->argv,c->argc);
+        if (listLength(server.monitors))
+            replicationFeedMonitors(server.monitors,c->db->id,c->argv,c->argc);
+    }
     server.stat_numcommands++;
 }
 
@@ -1255,7 +1291,7 @@ int processCommand(redisClient *c) {
 
     /* Only allow INFO and SLAVEOF when slave-serve-stale-data is no and
      * we are a slave with a broken link with master. */
-    if (server.masterhost && server.replstate != REDIS_REPL_CONNECTED &&
+    if (server.masterhost && server.repl_state != REDIS_REPL_CONNECTED &&
         server.repl_serve_stale_data == 0 &&
         c->cmd->proc != infoCommand && c->cmd->proc != slaveofCommand)
     {
@@ -1291,7 +1327,7 @@ int processCommand(redisClient *c) {
         queueMultiCommand(c);
         addReply(c,shared.queued);
     } else {
-        call(c);
+        call(c,REDIS_CALL_FULL);
     }
     return REDIS_OK;
 }
@@ -1306,27 +1342,27 @@ int prepareForShutdown(int flags) {
     /* Kill the saving child if there is a background saving in progress.
        We want to avoid race conditions, for instance our saving child may
        overwrite the synchronous saving did by SHUTDOWN. */
-    if (server.bgsavechildpid != -1) {
+    if (server.rdb_child_pid != -1) {
         redisLog(REDIS_WARNING,"There is a child saving an .rdb. Killing it!");
-        kill(server.bgsavechildpid,SIGKILL);
-        rdbRemoveTempFile(server.bgsavechildpid);
+        kill(server.rdb_child_pid,SIGKILL);
+        rdbRemoveTempFile(server.rdb_child_pid);
     }
-    if (server.appendonly) {
+    if (server.aof_state != REDIS_AOF_OFF) {
         /* Kill the AOF saving child as the AOF we already have may be longer
          * but contains the full dataset anyway. */
-        if (server.bgrewritechildpid != -1) {
+        if (server.aof_child_pid != -1) {
             redisLog(REDIS_WARNING,
                 "There is a child rewriting the AOF. Killing it!");
-            kill(server.bgrewritechildpid,SIGKILL);
+            kill(server.aof_child_pid,SIGKILL);
         }
         /* Append only file: fsync() the AOF and exit */
         redisLog(REDIS_NOTICE,"Calling fsync() on the AOF file.");
-        aof_fsync(server.appendfd);
+        aof_fsync(server.aof_fd);
     }
     if ((server.saveparamslen > 0 && !nosave) || save) {
         redisLog(REDIS_NOTICE,"Saving the final RDB snapshot before exiting.");
         /* Snapshotting. Perform a SYNC SAVE and exit */
-        if (rdbSave(server.dbfilename) != REDIS_OK) {
+        if (rdbSave(server.rdb_filename) != REDIS_OK) {
             /* Ooops.. error saving! The best we can do is to continue
              * operating. Note that if there was a background saving process,
              * in the next cron() Redis will be notified that the background
@@ -1424,8 +1460,9 @@ sds genRedisInfoString(char *section) {
             "redis_version:%s\r\n"
             "redis_git_sha1:%s\r\n"
             "redis_git_dirty:%d\r\n"
-            "arch_bits:%s\r\n"
+            "arch_bits:%d\r\n"
             "multiplexing_api:%s\r\n"
+            "gcc_version:%d.%d.%d\r\n"
             "process_id:%ld\r\n"
             "tcp_port:%d\r\n"
             "uptime_in_seconds:%ld\r\n"
@@ -1434,8 +1471,13 @@ sds genRedisInfoString(char *section) {
             REDIS_VERSION,
             redisGitSHA1(),
             strtol(redisGitDirty(),NULL,10) > 0,
-            (sizeof(long) == 8) ? "64" : "32",
+            server.arch_bits,
             aeGetApiName(),
+#ifdef __GNUC__
+            __GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__,
+#else
+            0,0,0,
+#endif
             (long) getpid(),
             server.port,
             uptime,
@@ -1448,7 +1490,7 @@ sds genRedisInfoString(char *section) {
         if (sections++) info = sdscat(info,"\r\n");
         info = sdscatprintf(info,
             "# Clients\r\n"
-            "connected_clients:%d\r\n"
+            "connected_clients:%lu\r\n"
             "client_longest_output_list:%lu\r\n"
             "client_biggest_input_buf:%lu\r\n"
             "blocked_clients:%d\r\n",
@@ -1498,23 +1540,23 @@ sds genRedisInfoString(char *section) {
             "last_save_time:%ld\r\n"
             "bgrewriteaof_in_progress:%d\r\n",
             server.loading,
-            server.appendonly,
+            server.aof_state != REDIS_AOF_OFF,
             server.dirty,
-            server.bgsavechildpid != -1,
+            server.rdb_child_pid != -1,
             server.lastsave,
-            server.bgrewritechildpid != -1);
+            server.aof_child_pid != -1);
 
-        if (server.appendonly) {
+        if (server.aof_state != REDIS_AOF_OFF) {
             info = sdscatprintf(info,
                 "aof_current_size:%lld\r\n"
                 "aof_base_size:%lld\r\n"
                 "aof_pending_rewrite:%d\r\n"
                 "aof_buffer_length:%zu\r\n"
                 "aof_pending_bio_fsync:%llu\r\n",
-                (long long) server.appendonly_current_size,
-                (long long) server.auto_aofrewrite_base_size,
-                server.aofrewrite_scheduled,
-                sdslen(server.aofbuf),
+                (long long) server.aof_current_size,
+                (long long) server.aof_rewrite_base_size,
+                server.aof_rewrite_scheduled,
+                sdslen(server.aof_buf),
                 bioPendingJobsOfType(REDIS_BIO_AOF_FSYNC));
         }
 
@@ -1563,7 +1605,7 @@ sds genRedisInfoString(char *section) {
             "keyspace_hits:%lld\r\n"
             "keyspace_misses:%lld\r\n"
             "pubsub_channels:%ld\r\n"
-            "pubsub_patterns:%u\r\n"
+            "pubsub_patterns:%lu\r\n"
             "latest_fork_usec:%lld\r\n",
             server.stat_numconnections,
             server.stat_numcommands,
@@ -1593,14 +1635,14 @@ sds genRedisInfoString(char *section) {
                 "master_sync_in_progress:%d\r\n"
                 ,server.masterhost,
                 server.masterport,
-                (server.replstate == REDIS_REPL_CONNECTED) ?
+                (server.repl_state == REDIS_REPL_CONNECTED) ?
                     "up" : "down",
                 server.master ?
                 ((int)(time(NULL)-server.master->lastinteraction)) : -1,
-                server.replstate == REDIS_REPL_TRANSFER
+                server.repl_state == REDIS_REPL_TRANSFER
             );
 
-            if (server.replstate == REDIS_REPL_TRANSFER) {
+            if (server.repl_state == REDIS_REPL_TRANSFER) {
                 info = sdscatprintf(info,
                     "master_sync_left_bytes:%ld\r\n"
                     "master_sync_last_io_seconds_ago:%d\r\n"
@@ -1609,14 +1651,14 @@ sds genRedisInfoString(char *section) {
                 );
             }
 
-            if (server.replstate != REDIS_REPL_CONNECTED) {
+            if (server.repl_state != REDIS_REPL_CONNECTED) {
                 info = sdscatprintf(info,
                     "master_link_down_since_seconds:%ld\r\n",
                     (long)time(NULL)-server.repl_down_since);
             }
         }
         info = sdscatprintf(info,
-            "connected_slaves:%d\r\n",
+            "connected_slaves:%lu\r\n",
             listLength(server.slaves));
         if (listLength(server.slaves)) {
             int slaveid = 0;
@@ -1924,102 +1966,6 @@ void redisAsciiArt(void) {
     zfree(buf);
 }
 
-#ifdef HAVE_BACKTRACE
-static void *getMcontextEip(ucontext_t *uc) {
-#if defined(__FreeBSD__)
-    return (void*) uc->uc_mcontext.mc_eip;
-#elif defined(__dietlibc__)
-    return (void*) uc->uc_mcontext.eip;
-#elif defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
-  #if __x86_64__
-    return (void*) uc->uc_mcontext->__ss.__rip;
-  #elif __i386__
-    return (void*) uc->uc_mcontext->__ss.__eip;
-  #else
-    return (void*) uc->uc_mcontext->__ss.__srr0;
-  #endif
-#elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)
-  #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__)
-    return (void*) uc->uc_mcontext->__ss.__rip;
-  #else
-    return (void*) uc->uc_mcontext->__ss.__eip;
-  #endif
-#elif defined(__i386__)
-    return (void*) uc->uc_mcontext.gregs[14]; /* Linux 32 */
-#elif defined(__X86_64__) || defined(__x86_64__)
-    return (void*) uc->uc_mcontext.gregs[16]; /* Linux 64 */
-#elif defined(__ia64__) /* Linux IA64 */
-    return (void*) uc->uc_mcontext.sc_ip;
-#else
-    return NULL;
-#endif
-}
-
-void bugReportStart(void) {
-    if (server.bug_report_start == 0) {
-        redisLog(REDIS_WARNING,
-            "=== REDIS BUG REPORT START: Cut & paste starting from here ===");
-        server.bug_report_start = 1;
-    }
-}
-
-static void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
-    void *trace[100];
-    char **messages = NULL;
-    int i, trace_size = 0;
-    ucontext_t *uc = (ucontext_t*) secret;
-    sds infostring, clients;
-    struct sigaction act;
-    REDIS_NOTUSED(info);
-
-    bugReportStart();
-    redisLog(REDIS_WARNING,
-        "    Redis %s crashed by signal: %d", REDIS_VERSION, sig);
-    redisLog(REDIS_WARNING,
-        "    Failed assertion: %s (%s:%d)", server.assert_failed,
-                        server.assert_file, server.assert_line);
-
-    /* Generate the stack trace */
-    trace_size = backtrace(trace, 100);
-
-    /* overwrite sigaction with caller's address */
-    if (getMcontextEip(uc) != NULL) {
-        trace[1] = getMcontextEip(uc);
-    }
-    messages = backtrace_symbols(trace, trace_size);
-    redisLog(REDIS_WARNING, "--- STACK TRACE");
-    for (i=1; i<trace_size; ++i)
-        redisLog(REDIS_WARNING,"%s", messages[i]);
-
-    /* Log INFO and CLIENT LIST */
-    redisLog(REDIS_WARNING, "--- INFO OUTPUT");
-    infostring = genRedisInfoString("all");
-    redisLogRaw(REDIS_WARNING, infostring);
-    redisLog(REDIS_WARNING, "--- CLIENT LIST OUTPUT");
-    clients = getAllClientsInfoString();
-    redisLogRaw(REDIS_WARNING, clients);
-    /* Don't sdsfree() strings to avoid a crash. Memory may be corrupted. */
-
-    redisLog(REDIS_WARNING,
-"=== REDIS BUG REPORT END. Make sure to include from START to END. ===\n\n"
-"    Please report the crash opening an issue on github:\n\n"
-"        http://github.com/antirez/redis/issues\n\n"
-);
-    /* free(messages); Don't call free() with possibly corrupted memory. */
-    if (server.daemonize) unlink(server.pidfile);
-
-    /* Make sure we exit with the right signal at the end. So for instance
-     * the core will be dumped if enabled. */
-    sigemptyset (&act.sa_mask);
-    /* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction
-     * is used. Otherwise, sa_handler is used */
-    act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND;
-    act.sa_handler = SIG_DFL;
-    sigaction (sig, &act, NULL);
-    kill(getpid(),sig);
-}
-#endif /* HAVE_BACKTRACE */
-
 static void sigtermHandler(int sig) {
     REDIS_NOTUSED(sig);
 
@@ -2051,9 +1997,15 @@ void setupSignalHandlers(void) {
 
 int main(int argc, char **argv) {
     long long start;
+    struct timeval tv;
 
+    /* We need to initialize our libraries, and the server configuration. */
     zmalloc_enable_thread_safeness();
+    srand(time(NULL)^getpid());
+    gettimeofday(&tv,NULL);
+    dictSetHashFunctionSeed(tv.tv_sec^tv.tv_usec^getpid());
     initServerConfig();
+
     if (argc >= 2) {
         int j = 1; /* First option to parse in argv[] */
         sds options = sdsempty();
@@ -2099,11 +2051,11 @@ int main(int argc, char **argv) {
     linuxOvercommitMemoryWarning();
 #endif
     start = ustime();
-    if (server.appendonly) {
-        if (loadAppendOnlyFile(server.appendfilename) == REDIS_OK)
+    if (server.aof_state == REDIS_AOF_ON) {
+        if (loadAppendOnlyFile(server.aof_filename) == REDIS_OK)
             redisLog(REDIS_NOTICE,"DB loaded from append only file: %.3f seconds",(float)(ustime()-start)/1000000);
     } else {
-        if (rdbLoad(server.dbfilename) == REDIS_OK) {
+        if (rdbLoad(server.rdb_filename) == REDIS_OK) {
             redisLog(REDIS_NOTICE,"DB loaded from disk: %.3f seconds",
                 (float)(ustime()-start)/1000000);
         } else if (errno != ENOENT) {