i know that in version 4.8 each http request gets its own thread to run ,
im doing links checker app that doing allot of http request in while loop
i notice in the windows task manager that my app is using more then 1600 threads over time and the number never gos down only up until its crash the app . ( i guessing it is the couse ) my question is does QNetworkAccessManager has option to use thread pool ?
or it has option to clean its thread after it finish its http request?

this is the main loop :

Qt Code: 
  1. while(!rpm_urlStack->isEmpty())
  2.     {
  3.          QString url = rpm_urlStack->top();
  4.          rpm_urlStack->pop();
  5.  
  6.          QString urlForReq(url);
  7.  
  8.          bool returnVal = true;
  9.          QNetworkRequest request;
  10.  
  11.          request.setUrl(QUrl(urlForReq));
  12.          request.setRawHeader("User-Agent", USER_AGENT.toUtf8());
  13.          request.setRawHeader("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
  14.          request.setRawHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
  15.          request.setRawHeader("Accept-Language", "en-us,en;q=0.5");
  16.          request.setRawHeader("Connection", "Keep-Alive");
  17.  
  18.           QEventLoop loop;
  19.           reply = m_networkManager->get(request);
  20.           connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
  21.           loop.exit();
  22.           if(!loop.isRunning())
  23.           {
  24.  
  25.              loop.exec();
  26.  
  27.           }
  28.  
  29.           RequestFinishedHandler(reply);
  30.  
  31.     }
  32.  
  33. RequestFinishedHandler(QNetworkReply *reply)
  34. {
  35.  
  36.  
  37.  if (reply->error() > 0) {
  38.         QNetworkReply::NetworkError networkError = reply->error();       
  39.         QString err = reply->errorString(); 
  40.  
  41.  
  42.     }
  43.     else {
  44.         QVariant vStatusCodeV =  reply->attribute(QNetworkRequest::HttpStatusCodeAttribute); 
  45.         QMutexLocker lock(_pMutex); // _pMutex defined as class member
  46.         char *buffer;
  47.         buffer  = getCurrentDateTime();
  48.         QTextStream out(m_file);
  49.         out << buffer <<"  "<<   _sCurrentUrl << "\n";  
  50.         lock.unlock();
  51.         if(vStatusCodeV.toInt() == 200)
  52.         {
  53.                QString ApiResponse;
  54.                QByteArray data;              
  55.                data=reply->readAll();
  56.                ApiResponse.append(QString::fromUtf8(data));
  57.  
  58.          } 
  59.  
  60.     }
  61.     reply->deleteLater();
  62.  
  63. }
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