prevent small integer sharing when maxmemory is active. So every object will use...

[redis.git] / src / config.c

diff --git a/src/config.c b/src/config.c
index 8a5ad6c2bc8cd6d0671b2194dad057d23ae7ac7f..9655917cd49058d9de960706a2fdf0fefb0f2146 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -123,6 +123,27 @@ void loadServerConfig(char *filename) {
             server.maxclients = atoi(argv[1]);
         } else if (!strcasecmp(argv[0],"maxmemory") && argc == 2) {
             server.maxmemory = memtoll(argv[1],NULL);
+        } else if (!strcasecmp(argv[0],"maxmemory-policy") && argc == 2) {
+            if (!strcasecmp(argv[1],"volatile-lru")) {
+                server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
+            } else if (!strcasecmp(argv[1],"volatile-random")) {
+                server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
+            } else if (!strcasecmp(argv[1],"volatile-ttl")) {
+                server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
+            } else if (!strcasecmp(argv[1],"allkeys-lru")) {
+                server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
+            } else if (!strcasecmp(argv[1],"allkeys-random")) {
+                server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
+            } else {
+                err = "Invalid maxmemory policy";
+                goto loaderr;
+            }
+        } else if (!strcasecmp(argv[0],"maxmemory-samples") && argc == 2) {
+            server.maxmemory_samples = atoi(argv[1]);
+            if (server.maxmemory_samples <= 0) {
+                err = "maxmemory-samples must be 1 or greater";
+                goto loaderr;
+            }
         } else if (!strcasecmp(argv[0],"slaveof") && argc == 3) {
             server.masterhost = sdsnew(argv[1]);
             server.masterport = atoi(argv[2]);
@@ -241,6 +262,25 @@ void configSetCommand(redisClient *c) {
         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
             ll < 0) goto badfmt;
         server.maxmemory = ll;
+        if (server.maxmemory) freeMemoryIfNeeded();
+    } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-policy")) {
+        if (!strcasecmp(o->ptr,"volatile-lru")) {
+            server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU;
+        } else if (!strcasecmp(o->ptr,"volatile-random")) {
+            server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_RANDOM;
+        } else if (!strcasecmp(o->ptr,"volatile-ttl")) {
+            server.maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_TTL;
+        } else if (!strcasecmp(o->ptr,"allkeys-lru")) {
+            server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_LRU;
+        } else if (!strcasecmp(o->ptr,"allkeys-random")) {
+            server.maxmemory_policy = REDIS_MAXMEMORY_ALLKEYS_RANDOM;
+        } else {
+            goto badfmt;
+        }
+    } else if (!strcasecmp(c->argv[2]->ptr,"maxmemory-samples")) {
+        if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
+            ll <= 0) goto badfmt;
+        server.maxmemory_samples = ll;
     } else if (!strcasecmp(c->argv[2]->ptr,"timeout")) {
         if (getLongLongFromObject(o,&ll) == REDIS_ERR ||
             ll < 0 || ll > LONG_MAX) goto badfmt;
@@ -332,6 +372,7 @@ void configGetCommand(redisClient *c) {
     robj *o = getDecodedObject(c->argv[2]);
     void *replylen = addDeferredMultiBulkLength(c);
     char *pattern = o->ptr;
+    char buf[128];
     int matches = 0;
 
     if (stringmatch(pattern,"dbfilename",0)) {
@@ -350,17 +391,34 @@ void configGetCommand(redisClient *c) {
         matches++;
     }
     if (stringmatch(pattern,"maxmemory",0)) {
-        char buf[128];
-
-        ll2string(buf,128,server.maxmemory);
+        ll2string(buf,sizeof(buf),server.maxmemory);
         addReplyBulkCString(c,"maxmemory");
         addReplyBulkCString(c,buf);
         matches++;
     }
-    if (stringmatch(pattern,"timeout",0)) {
-        char buf[128];
+    if (stringmatch(pattern,"maxmemory-policy",0)) {
+        char *s;
 
-        ll2string(buf,128,server.maxidletime);
+        switch(server.maxmemory_policy) {
+        case REDIS_MAXMEMORY_VOLATILE_LRU: s = "volatile-lru"; break;
+        case REDIS_MAXMEMORY_VOLATILE_TTL: s = "volatile-ttl"; break;
+        case REDIS_MAXMEMORY_VOLATILE_RANDOM: s = "volatile-random"; break;
+        case REDIS_MAXMEMORY_ALLKEYS_LRU: s = "allkeys-lru"; break;
+        case REDIS_MAXMEMORY_ALLKEYS_RANDOM: s = "allkeys-random"; break;
+        default: s = "unknown"; break; /* too harmless to panic */
+        }
+        addReplyBulkCString(c,"maxmemory-policy");
+        addReplyBulkCString(c,s);
+        matches++;
+    }
+    if (stringmatch(pattern,"maxmemory-samples",0)) {
+        ll2string(buf,sizeof(buf),server.maxmemory_samples);
+        addReplyBulkCString(c,"maxmemory-samples");
+        addReplyBulkCString(c,buf);
+        matches++;
+    }
+    if (stringmatch(pattern,"timeout",0)) {
+        ll2string(buf,sizeof(buf),server.maxidletime);
         addReplyBulkCString(c,"timeout");
         addReplyBulkCString(c,buf);
         matches++;
@@ -417,10 +475,11 @@ void configCommand(redisClient *c) {
         configGetCommand(c);
     } else if (!strcasecmp(c->argv[1]->ptr,"resetstat")) {
         if (c->argc != 2) goto badarity;
+        server.stat_keyspace_hits = 0;
+        server.stat_keyspace_misses = 0;
         server.stat_numcommands = 0;
         server.stat_numconnections = 0;
         server.stat_expiredkeys = 0;
-        server.stat_starttime = time(NULL);
         addReply(c,shared.ok);
     } else {
         addReplyError(c,