]> git.saurik.com Git - redis.git/blobdiff - src/redis.c
Merge remote branch 'pietern/ziplist-eff'
[redis.git] / src / redis.c
index eade7868a1b37f5c6d57aed14e3beff72c1ff231..caa9624739ef9defa9a58c1b55f330a096eb9eb0 100644 (file)
@@ -51,6 +51,7 @@
 #include <float.h>
 #include <math.h>
 #include <pthread.h>
+#include <sys/resource.h>
 
 /* Our shared "common" objects */
 
@@ -743,6 +744,7 @@ void initServerConfig() {
     server.hash_max_zipmap_value = REDIS_HASH_MAX_ZIPMAP_VALUE;
     server.list_max_ziplist_entries = REDIS_LIST_MAX_ZIPLIST_ENTRIES;
     server.list_max_ziplist_value = REDIS_LIST_MAX_ZIPLIST_VALUE;
+    server.set_max_intset_entries = REDIS_SET_MAX_INTSET_ENTRIES;
     server.shutdown_asap = 0;
 
     resetServerSaveParams();
@@ -908,7 +910,7 @@ int processCommand(redisClient *c) {
     } else if (c->multibulk) {
         if (c->bulklen == -1) {
             if (((char*)c->argv[0]->ptr)[0] != '$') {
-                addReplySds(c,sdsnew("-ERR multi bulk protocol error\r\n"));
+                addReplyError(c,"multi bulk protocol error");
                 resetClient(c);
                 return 1;
             } else {
@@ -921,7 +923,7 @@ int processCommand(redisClient *c) {
                     bulklen < 0 || bulklen > 1024*1024*1024)
                 {
                     c->argc--;
-                    addReplySds(c,sdsnew("-ERR invalid bulk write count\r\n"));
+                    addReplyError(c,"invalid bulk write count");
                     resetClient(c);
                     return 1;
                 }
@@ -974,17 +976,14 @@ int processCommand(redisClient *c) {
      * such wrong arity, bad command name and so forth. */
     cmd = lookupCommand(c->argv[0]->ptr);
     if (!cmd) {
-        addReplySds(c,
-            sdscatprintf(sdsempty(), "-ERR unknown command '%s'\r\n",
-                (char*)c->argv[0]->ptr));
+        addReplyErrorFormat(c,"unknown command '%s'",
+            (char*)c->argv[0]->ptr);
         resetClient(c);
         return 1;
     } else if ((cmd->arity > 0 && cmd->arity != c->argc) ||
                (c->argc < -cmd->arity)) {
-        addReplySds(c,
-            sdscatprintf(sdsempty(),
-                "-ERR wrong number of arguments for '%s' command\r\n",
-                cmd->name));
+        addReplyErrorFormat(c,"wrong number of arguments for '%s' command",
+            cmd->name);
         resetClient(c);
         return 1;
     } else if (cmd->flags & REDIS_CMD_BULK && c->bulklen == -1) {
@@ -998,7 +997,7 @@ int processCommand(redisClient *c) {
             bulklen < 0 || bulklen > 1024*1024*1024)
         {
             c->argc--;
-            addReplySds(c,sdsnew("-ERR invalid bulk write count\r\n"));
+            addReplyError(c,"invalid bulk write count");
             resetClient(c);
             return 1;
         }
@@ -1025,7 +1024,7 @@ int processCommand(redisClient *c) {
 
     /* Check if the user is authenticated */
     if (server.requirepass && !c->authenticated && cmd->proc != authCommand) {
-        addReplySds(c,sdsnew("-ERR operation not permitted\r\n"));
+        addReplyError(c,"operation not permitted");
         resetClient(c);
         return 1;
     }
@@ -1034,7 +1033,7 @@ int processCommand(redisClient *c) {
     if (server.maxmemory && (cmd->flags & REDIS_CMD_DENYOOM) &&
         zmalloc_used_memory() > server.maxmemory)
     {
-        addReplySds(c,sdsnew("-ERR command not allowed when used memory > 'maxmemory'\r\n"));
+        addReplyError(c,"command not allowed when used memory > 'maxmemory'");
         resetClient(c);
         return 1;
     }
@@ -1044,7 +1043,7 @@ int processCommand(redisClient *c) {
         &&
         cmd->proc != subscribeCommand && cmd->proc != unsubscribeCommand &&
         cmd->proc != psubscribeCommand && cmd->proc != punsubscribeCommand) {
-        addReplySds(c,sdsnew("-ERR only (P)SUBSCRIBE / (P)UNSUBSCRIBE / QUIT allowed in this context\r\n"));
+        addReplyError(c,"only (P)SUBSCRIBE / (P)UNSUBSCRIBE / QUIT allowed in this context");
         resetClient(c);
         return 1;
     }
@@ -1085,11 +1084,7 @@ int prepareForShutdown() {
         if (server.vm_enabled) unlink(server.vm_swap_file);
     } else {
         /* Snapshotting. Perform a SYNC SAVE and exit */
-        if (rdbSave(server.dbfilename) == REDIS_OK) {
-            if (server.daemonize)
-                unlink(server.pidfile);
-            redisLog(REDIS_WARNING,"%zu bytes used at exit",zmalloc_used_memory());
-        } else {
+        if (rdbSave(server.dbfilename) != 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
@@ -1099,6 +1094,7 @@ int prepareForShutdown() {
             return REDIS_ERR;
         }
     }
+    if (server.daemonize) unlink(server.pidfile);
     redisLog(REDIS_WARNING,"Server exit now, bye bye...");
     return REDIS_OK;
 }
@@ -1111,7 +1107,7 @@ void authCommand(redisClient *c) {
       addReply(c,shared.ok);
     } else {
       c->authenticated = 0;
-      addReplySds(c,sdscatprintf(sdsempty(),"-ERR invalid password\r\n"));
+      addReplyError(c,"invalid password");
     }
 }
 
@@ -1152,6 +1148,10 @@ sds genRedisInfoString(void) {
     time_t uptime = time(NULL)-server.stat_starttime;
     int j;
     char hmem[64];
+    struct rusage self_ru, c_ru;
+
+    getrusage(RUSAGE_SELF, &self_ru);
+    getrusage(RUSAGE_CHILDREN, &c_ru);
 
     bytesToHuman(hmem,zmalloc_used_memory());
     info = sdscatprintf(sdsempty(),
@@ -1163,11 +1163,16 @@ sds genRedisInfoString(void) {
         "process_id:%ld\r\n"
         "uptime_in_seconds:%ld\r\n"
         "uptime_in_days:%ld\r\n"
+        "used_cpu_sys:%.2f\r\n"
+        "used_cpu_user:%.2f\r\n"
+        "used_cpu_sys_childrens:%.2f\r\n"
+        "used_cpu_user_childrens:%.2f\r\n"
         "connected_clients:%d\r\n"
         "connected_slaves:%d\r\n"
         "blocked_clients:%d\r\n"
         "used_memory:%zu\r\n"
         "used_memory_human:%s\r\n"
+        "mem_fragmentation_ratio:%.2f\r\n"
         "changes_since_last_save:%lld\r\n"
         "bgsave_in_progress:%d\r\n"
         "last_save_time:%ld\r\n"
@@ -1189,11 +1194,16 @@ sds genRedisInfoString(void) {
         (long) getpid(),
         uptime,
         uptime/(3600*24),
+        (float)self_ru.ru_utime.tv_sec+(float)self_ru.ru_utime.tv_usec/1000000,
+        (float)self_ru.ru_stime.tv_sec+(float)self_ru.ru_stime.tv_usec/1000000,
+        (float)c_ru.ru_utime.tv_sec+(float)c_ru.ru_utime.tv_usec/1000000,
+        (float)c_ru.ru_stime.tv_sec+(float)c_ru.ru_stime.tv_usec/1000000,
         listLength(server.clients)-listLength(server.slaves),
         listLength(server.slaves),
         server.blpop_blocked_clients,
         zmalloc_used_memory(),
         hmem,
+        zmalloc_get_fragmentation_ratio(),
         server.dirty,
         server.bgsavechildpid != -1,
         server.lastsave,
@@ -1323,7 +1333,8 @@ void freeMemoryIfNeeded(void) {
         if (tryFreeOneObjectFromFreelist() == REDIS_OK) continue;
         for (j = 0; j < server.dbnum; j++) {
             int minttl = -1;
-            robj *minkey = NULL;
+            sds minkey = NULL;
+            robj *keyobj = NULL;
             struct dictEntry *de;
 
             if (dictSize(server.db[j].expires)) {
@@ -1340,7 +1351,10 @@ void freeMemoryIfNeeded(void) {
                         minttl = t;
                     }
                 }
-                dbDelete(server.db+j,minkey);
+                keyobj = createStringObject(minkey,sdslen(minkey));
+                dbDelete(server.db+j,keyobj);
+                server.stat_expiredkeys++;
+                decrRefCount(keyobj);
             }
         }
         if (!freed) return; /* nothing to free... */
@@ -1371,9 +1385,17 @@ void linuxOvercommitMemoryWarning(void) {
 }
 #endif /* __linux__ */
 
+void createPidFile(void) {
+    /* Try to write the pid file in a best-effort way. */
+    FILE *fp = fopen(server.pidfile,"w");
+    if (fp) {
+        fprintf(fp,"%d\n",getpid());
+        fclose(fp);
+    }
+}
+
 void daemonize(void) {
     int fd;
-    FILE *fp;
 
     if (fork() != 0) exit(0); /* parent exits */
     setsid(); /* create a new session */
@@ -1387,12 +1409,6 @@ void daemonize(void) {
         dup2(fd, STDERR_FILENO);
         if (fd > STDERR_FILENO) close(fd);
     }
-    /* Try to write the pid file */
-    fp = fopen(server.pidfile,"w");
-    if (fp) {
-        fprintf(fp,"%d\n",getpid());
-        fclose(fp);
-    }
 }
 
 void version() {
@@ -1425,6 +1441,7 @@ int main(int argc, char **argv) {
     }
     if (server.daemonize) daemonize();
     initServer();
+    if (server.daemonize) createPidFile();
     redisLog(REDIS_NOTICE,"Server started, Redis version " REDIS_VERSION);
 #ifdef __linux__
     linuxOvercommitMemoryWarning();
@@ -1501,6 +1518,7 @@ void segvHandler(int sig, siginfo_t *info, void *secret) {
         redisLog(REDIS_WARNING,"%s", messages[i]);
 
     /* free(messages); Don't call free() with possibly corrupted memory. */
+    if (server.daemonize) unlink(server.pidfile);
     _exit(0);
 }