some modify

broker/broker.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"net"
 	"net/http"
+	_ "net/http/pprof"
 	"runtime/debug"
 	"sync"
 	"sync/atomic"
@@ -153,6 +154,16 @@ func (b *Broker) Start() {
 	//system monitor
 	go StateMonitor()
 
+	if b.config.Debug {
+		startPProf()
+	}
+
+}
+
+func startPProf() {
+	go func() {
+		http.ListenAndServe(":10060", nil)
+	}()
 }
 
 func StateMonitor() {

broker/sesson.go

@@ -1,3 +1,5 @@
+/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
+ */
 package broker
 
 import "github.com/eclipse/paho.mqtt.golang/packets"

lib/sessions/memprovider.go

@@ -1,17 +1,3 @@
-// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 package sessions
 
 import (

main.go

@@ -7,7 +7,7 @@ copyright notice and this permission notice appear in all copies.
 package main
 
 import (
-	"fmt"
+	"log"
 	"os"
 	"os/signal"
 	"runtime"
@@ -19,19 +19,17 @@ func main() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
 	config, err := broker.ConfigureConfig(os.Args[1:])
 	if err != nil {
-		fmt.Println("configure broker config error: ", err)
-		return
+		log.Fatal("configure broker config error: ", err)
 	}
 
 	b, err := broker.NewBroker(config)
 	if err != nil {
-		fmt.Println("New Broker error: ", err)
-		return
+		log.Fatal("New Broker error: ", err)
 	}
 	b.Start()
 
 	s := waitForSignal()
-	fmt.Println("signal received, broker closed.", s)
+	log.Println("signal received, broker closed.", s)
 }
 
 func waitForSignal() os.Signal {