[Qt-interest] QNetworkAccessManager warning
Scott Aron Bloom
Scott.Bloom at sabgroup.com
Tue Jan 26 23:38:49 CET 2010
There is a built in timeout to QNAM, which is probably implemented using a wait condition...
I would call rquiest->abort() before closing
Scott
-----Original Message-----
From: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Tr3wory
Sent: Tuesday, January 26, 2010 2:31 PM
To: qt-interest at trolltech.com
Subject: Re: [Qt-interest] QNetworkAccessManager warning
It's empty.
I found another interesting thing: if I wait more than 1 minute after
the finished(QNetworkReply*) signal, then I don't get the message when
the program is exiting.
tr3w
On Tue, Jan 26, 2010 at 11:14 PM, Iñigo Illán <kodeport at terra.es> wrote:
> I think it could help if you also provide us the destructor of the class.
>
>
> El mar, 26-01-2010 a las 22:28 +0100, Tr3wory escribió:
>
> Hi!
>
> Recently I switched my project from 4.5.2 to 4.6.1.
> After that I always got a "QWaitCondition: Destroyed while threads are
> still waiting" message when my program was exiting.
>
> I used QHttp to download a png from the net. If I removed it then the
> message disappeared.
>
> Because the QHttp is obsolete I switched to QNetworAcessManager. But I
> still get the message.
>
> Do you have any idea?
>
> Code:
> QUrl url=tr("http://example.com/example.png");
>
> QNetworkAccessManager* netManager=new QNetworkAccessManager(this);
>
> connect(netManager,SIGNAL(finished(QNetworkReply*)),this,SLOT(onNetworkReplyFinished(QNetworkReply*)));
> netManager->get(QNetworkRequest(url));
> ...
>
> void MainWindow::onNetworkReplyFinished(QNetworkReply* reply)
> {
> if (reply->error()==QNetworkReply::NoError &&
> m_banner.loadFromData(reply->readAll()) && m_mainMenu)
> m_mainMenu->addBanner(m_banner);
>
> reply->deleteLater();
> }
>
> Stack:
> ...
> 5 qWarning qglobal.cpp 2378 0x6a10e59d
> 6 ~QWaitCondition qwaitcondition_win.cpp 155 0x6a115c90
> 7 ~QThreadPoolPrivate qthreadpool_p.h 69 0x6a264afd
> 8 QScopedPointerDeleter<QObjectData>::cleanup qscopedpointer.h 62 0x6a267f0a
> 9 ~QScopedPointer qscopedpointer.h 100 0x6a25e9f1
> 10 ~QObject qobject.cpp 992 0x6a20cbf8
> 11 ~QThreadPool qthreadpool.cpp 430 0x6a10d72e
> 12 ~QHostInfoLookupManager qhostinfo.cpp 454 0x6804ef50
> 13 ~QGlobalStaticDeleter qglobal.h 1799 0x6809592f
> 14 __tcf_0 qhostinfo.cpp 64 0x6804df5e
> 15 __dll_exit C:\Qt\4.6.1\bin\QtNetworkd4.dll 0 0x6800102f
> 16 DllMainCRTStartup at 12 C:\Qt\4.6.1\bin\QtNetworkd4.dll 0 0x680010f5
> 17 ntdll!LdrSetAppCompatDllRedirectionC
> allback C:\WINDOWS\system32\ntdll.dll 0 0x7c9011a7
> 18 ?? 0 0x68000000
> 19 ?? 0 0x00000000
>
> System:
> Windows XP, MinGW 4.4, Qt 4.6.1
>
>
> tr3w
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