auto mmap for downloads

Author: boypt

engine/config.go

@@ -35,7 +35,6 @@ type Config struct {
 	DisableIPv6             bool
 	NoDefaultPortForwarding bool
 	DisableUTP              bool
-	UseMmap                 bool
 	DownloadDirectory       string
 	WatchDirectory          string
 	EnableUpload            bool
@@ -69,7 +68,6 @@ func InitConf(specPath string) (*Config, error) {
 	viper.SetDefault("EnableSeeding", true)
 	viper.SetDefault("NoDefaultPortForwarding", true)
 	viper.SetDefault("DisableUTP", false)
-	viper.SetDefault("UseMmap", false)
 	viper.SetDefault("AutoStart", true)
 	viper.SetDefault("DoneCmd", "")
 	viper.SetDefault("SeedRatio", 0)

engine/engine.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"net/url"
 	"path"
+	"strconv"
 	"sync"
 	"time"
 
@@ -86,7 +87,10 @@ func (e *Engine) Configure(c *Config) error {
 	tc.DisableUTP = c.DisableUTP
 	tc.ListenPort = c.IncomingPort
 	tc.DataDir = c.DownloadDirectory
-	if c.UseMmap {
+
+	// enable MMap on 64bit machines
+	if strconv.IntSize == 64 {
+		log.Println("[Configure] 64bit arch detected, using MMap for storage")
 		tc.DefaultStorage = storage.NewMMap(tc.DataDir)
 	}
 	if c.MuteEngineLog {