[Qt-interest] QNetworkAccessManager warning

Tr3wory tr3w at freemail.hu
Wed Jan 27 00:06:01 CET 2010


It has a parent, so this is not necessary.

I called the netManager->deleteLater() from the slot, but it didn't help...

tr3w

On Tue, Jan 26, 2010 at 11:45 PM, Iñigo Illán <kodeport at terra.es> wrote:
> I think you should try deleting netManager on the destructor.
>
>
> El mar, 26-01-2010 a las 23:31 +0100, Tr3wory escribió:
>
> 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 Because the QHttp is obsolete I switched to QNetworAcessManager.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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>> Qt-interest mailing list
>> Qt-interest at trolltech.com
>> http://lists.trolltech.com/mailman/listinfo/qt-interest
>>
>>
>
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