From bb53597cfe3311b4f7f32f279637aa570022d99f Mon Sep 17 00:00:00 2001
From: HadesLee <hadeslee@vip.qq.com>
Date: Fri, 21 Mar 2014 09:13:56 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8DConcurrentModificationExcepti?=
 =?UTF-8?q?on=E7=9A=84=E5=BC=82=E5=B8=B8=EF=BC=8C=E5=BD=93=E8=AF=B7?=
 =?UTF-8?q?=E6=B1=82=E9=87=8F=E6=AF=94=E8=BE=83=E5=A4=A7=E7=9A=84=E6=97=B6?=
 =?UTF-8?q?=E5=80=99?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/com/alibaba/druid/support/http/stat/WebAppStat.java  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/alibaba/druid/support/http/stat/WebAppStat.java b/src/main/java/com/alibaba/druid/support/http/stat/WebAppStat.java
index b0956e85b5..775d8eb83e 100644
--- a/src/main/java/com/alibaba/druid/support/http/stat/WebAppStat.java
+++ b/src/main/java/com/alibaba/druid/support/http/stat/WebAppStat.java
@@ -31,6 +31,7 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
 import com.alibaba.druid.support.logging.Log;
 import com.alibaba.druid.support.logging.LogFactory;
 import com.alibaba.druid.util.LRUCache;
+import java.util.Collections;
 
 public class WebAppStat {
 
@@ -504,7 +505,7 @@ public class WebAppStat {
 
     public List<Map<String, Object>> getSessionStatDataList() {
         List<Map<String, Object>> sessionStatDataList = new ArrayList<Map<String, Object>>(this.sessionStatMap.size());
-        for (WebSessionStat sessionStat : this.sessionStatMap.values()) {
+        for (WebSessionStat sessionStat : Collections.unmodifiableCollection(this.sessionStatMap.values())) {
             Map<String, Object> sessionStatData = sessionStat.getStatData();
 
             int runningCount = ((Number) sessionStatData.get("RunningCount")).intValue();
@@ -642,7 +643,6 @@ public class WebAppStat {
             }
         } else if (isLinux) {
             osLinuxCount.incrementAndGet();
-
             isAndroid = computeUserAgentAndroid(userAgent);
         } else if (userAgent.indexOf("Symbian") != -1) {
             osSymbianCount.incrementAndGet();