QNetworkConfigurationManager: Fix network polling.

startPolling() is called by each engine, so before it would start
multiple singleshot timers. So I moved the timer to the class
and check if it has already been started before it is activated
again. So that we just use one timer.

Task-number: QTBUG-17219
Reviewed-by: Iiro Kause
Reviewed-by: Kranthi Kuntala
(cherry picked from commit 2506b86828ca8140c2f22d85a4378df40899b132)

2 files changed, 14 insertions, 2 deletions

diff --git a/src/network/bearer/qnetworkconfigmanager_p.cpp b/src/network/bearer/qnetworkconfigmanager_p.cpp
index c108ad34cf..e9b6703dd9 100644
--- a/src/network/bearer/qnetworkconfigmanager_p.cpp
+++ b/src/network/bearer/qnetworkconfigmanager_p.cpp
@@ -60,7 +60,7 @@ Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
 #endif
 
 QNetworkConfigurationManagerPrivate::QNetworkConfigurationManagerPrivate()
-    : QObject(), mutex(QMutex::Recursive), forcedPolling(0), firstUpdate(true)
+    : QObject(), pollTimer(0), mutex(QMutex::Recursive), forcedPolling(0), firstUpdate(true)
 {
     qRegisterMetaType<QNetworkConfiguration>("QNetworkConfiguration");
     qRegisterMetaType<QNetworkConfigurationPrivatePointer>("QNetworkConfigurationPrivatePointer");
@@ -442,9 +442,19 @@ void QNetworkConfigurationManagerPrivate::startPolling()
 {
     QMutexLocker locker(&mutex);
 
+    if(!pollTimer) {
+        pollTimer = new QTimer(this);
+        pollTimer->setInterval(10000);
+        pollTimer->setSingleShot(true);
+        connect(pollTimer, SIGNAL(timeout()), this, SLOT(pollEngines()));
+    }
+
+    if(pollTimer->isActive())
+        return;
+
     foreach (QBearerEngine *engine, sessionEngines) {
         if (engine->requiresPolling() && (forcedPolling || engine->configurationsInUse())) {
-            QTimer::singleShot(10000, this, SLOT(pollEngines()));
+            pollTimer->start();
             break;
         }
     }
diff --git a/src/network/bearer/qnetworkconfigmanager_p.h b/src/network/bearer/qnetworkconfigmanager_p.h
index 81f38c5183..abc4b9b4fa 100644
--- a/src/network/bearer/qnetworkconfigmanager_p.h
+++ b/src/network/bearer/qnetworkconfigmanager_p.h
@@ -64,6 +64,7 @@
 QT_BEGIN_NAMESPACE
 
 class QBearerEngine;
+class QTimer;
 
 class Q_NETWORK_EXPORT QNetworkConfigurationManagerPrivate : public QObject
 {
@@ -107,6 +108,7 @@ private Q_SLOTS:
 
 private:
     void startPolling();
+    QTimer *pollTimer;
 
 private:
     mutable QMutex mutex;