Add a MemUsage() helper

dnscrypt-proxy/common.go

@@ -3,7 +3,9 @@ package main
 import (
 	"encoding/binary"
 	"errors"
+	"fmt"
 	"net"
+	"runtime"
 	"strconv"
 	"strings"
 	"unicode"
@@ -153,3 +155,12 @@ func ExtractHostAndPort(str string, defaultPort int) (host string, port int) {
 	}
 	return
 }
+
+func MemUsage() {
+	var m runtime.MemStats
+	runtime.ReadMemStats(&m)
+	fmt.Printf("Alloc = %v MiB", m.Alloc/1024/1024)
+	fmt.Printf("\tTotalAlloc = %v MiB", m.TotalAlloc/1024/1024)
+	fmt.Printf("\tSys = %v MiB", m.Sys/1024/1024)
+	fmt.Printf("\tNumGC = %v\n", m.NumGC)
+}