Added cyclic garbage collection for a defined interval. Defaults to 24h

README

@@ -51,7 +51,9 @@ Usage:
     -cache=32: cache size in MB # Cache size for LevelDB
     -driver="leveldb": type of database (leveldb, sqlite)
     -host="": host to bind
+    -gc-duration="24h": Duration between forced GCs.
     -port=6379: port to bind
+    -version=false: Print version and exit.
 
 To use mtredisalize with your particular world you have to modify the
 world.mt of the world.

main.go

@@ -11,23 +11,32 @@ import (
 	"net"
 	"os"
 	"os/signal"
+	"runtime"
+	"time"
 )
 
-const Version = "pre0.1"
+const (
+	Version    = "pre0.1"
+	GCDuration = "24h"
+)
 
 func main() {
 
-	var port int
-	var host string
-	var driver string
-	var cacheSize int
-	var version bool
+	var (
+		port       int
+		host       string
+		driver     string
+		cacheSize  int
+		version    bool
+		gcDuration string
+	)
 
 	flag.IntVar(&port, "port", 6379, "port to bind")
 	flag.StringVar(&driver, "driver", "leveldb", "type of database (leveldb, sqlite)")
 	flag.StringVar(&host, "host", "", "host to bind")
 	flag.IntVar(&cacheSize, "cache", 32, "cache size in MB")
 	flag.BoolVar(&version, "version", false, "Print version and exit.")
+	flag.StringVar(&gcDuration, "gc-duration", GCDuration, "Duration between forced GCs.")
 	flag.Parse()
 
 	if version {
@@ -41,8 +50,15 @@ func main() {
 		log.Fatal("Missing path to world")
 	}
 
-	var err error
-	var backend Backend
+	var (
+		err     error
+		backend Backend
+		gcDur   time.Duration
+	)
+
+	if gcDur, err = time.ParseDuration(gcDuration); err != nil {
+		log.Fatal(err)
+	}
 
 	if driver == "sqlite" {
 		if backend, err = NewSqliteBackend(args[0]); err != nil {
@@ -80,6 +96,9 @@ func main() {
 		}
 	}()
 
+	log.Printf("Doing garbage collection every: %s", gcDur)
+	gcChan := time.Tick(gcDur)
+
 	for {
 		select {
 		case conn := <-connChan:
@@ -93,6 +112,10 @@ func main() {
 		case <-sigChan:
 			log.Println("Shutting down")
 			return
+		case <-gcChan:
+			log.Println("Starting garbage collection.")
+			runtime.GC()
+			log.Println("Garbage collection done.")
 		}
 	}
 }