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need to look into your parseReadyData<br>
<br>
<div class="moz-cite-prefix">28.05.2014 22:03, Krisztian Olah пишет:<br>
</div>
<blockquote
cite="mid:CACX4Zqao52hWXjm07=+rOQdmhFiSjV-pWWCpKBE8PnLT1nQdnA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Andrey,
<div> Thanks for the answer, your snippet looks very similar
to what I have. Perhaps if I posted my code segment would be
of help in helping me figuring out where I'm wrong. <br>
<div style=""> During parsing CPU usage reaches 97-100%
which causes my GUI to hang(I have about 500 000 opening and
closing tags and half of the enclosed items I need to
process: save, in some cases insert spaces, etc), especially
awkward when I start parsing whilst still fetching the data
from network(sometimes hangs during pageStack.push() ), but
it's bad for up to 2-5 seconds nevertheless. I wouldn't mind
if parsing took 10 seconds if GUI was responsive. This is
what I'm doing:</div>
<div style=""><br>
</div>
<div style="">void SomeClass::someMethod() {</div>
<div style=""> MyContainer* container = new
MyContainer();</div>
<div style=""> //reader has a handle to
container, through which it populates the container</div>
<div style=""> MyXmlStreamReader* parser = new
MyXmlStreamReader(container);</div>
<div style=""> QThread* parserThread = new
QThread();</div>
<div style="">
parser->moveToThread(parserThread);</div>
<div style="">
<pre style="margin-top:0px;margin-bottom:0px">
</pre>
<pre style="margin-top:0px;margin-bottom:0px"> connect(parser, SIGNAL(finished()), this, SLOT(onParsingFinished) );</pre>
<pre style="margin-top:0px;margin-bottom:0px"> connect(parser, SIGNAL(finished()), parserThread, SLOT(quit()) );</pre>
<pre style="margin-top:0px;margin-bottom:0px"> connect(parser, SIGNAL(finished()), parser, SLOT(deleteLater()) );</pre>
<pre style="margin-top:0px;margin-bottom:0px"> connect(parserThread, SIGNAL(finished()), parserThread, SLOT(deleteLater()) );</pre>
<pre style="margin-top:0px;margin-bottom:0px">
</pre>
<pre style="margin-top:0px;margin-bottom:0px"> parserThread->start();</pre>
<pre style="margin-top:0px;margin-bottom:0px">
</pre>
<pre style="margin-top:0px;margin-bottom:0px"> reply = networkMngr->get(QNetworkRequest(someUrl)); //both pointers are class members</pre>
<pre style="margin-top:0px;margin-bottom:0px">
</pre>
<pre style="margin-top:0px;margin-bottom:0px"> connect(reply, SIGNAL(finished()), this, SLOT(onAllDataRecieved()) );</pre>
<pre style="margin-top:0px;margin-bottom:0px">
</pre>
<pre style="margin-top:0px;margin-bottom:0px"> <span style="font-family:arial">//this starts the parser with the data available at the time, </span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="font-family:arial"> // when parser reaches the end of xml document it emits its </span><span style="font-family:arial">finished() signal</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"> connect(reply, SIGNAL(readyRead()), this, SLOT(parseReadyData()) );</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)">}</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)">
</span></pre>
<pre style="margin-top:0px;margin-bottom:0px">Thanks again</pre>
<pre style="margin-top:0px;margin-bottom:0px">Kris</pre>
</div>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On 28 May 2014 06:16, Andrey
Kozhevnikov <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:coderusinbox@gmail.com" target="_blank">coderusinbox@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> it can't "doesn't
help much". you initializing thread wrong.<br>
<br>
simple threading way is:<br>
<br>
<tt>MyXmlParser *parser = new MyXmlParser(xmlDocument);</tt><tt><br>
</tt><tt>QThread *thread = new QThread(parser);</tt><tt><br>
</tt><tt>parser->moveToThread(thread);</tt><tt><br>
</tt><tt>QObject::connect(thread, SIGNAL(started()),
parser, SLOT(parse()));</tt><tt><br>
</tt><tt>QObject::connect(parser,
SIGNAL(parseComplete(QVariantMap)</tt><tt>), this,
SLOT(onParseComplete(QVariantMap)));</tt><tt><br>
</tt><tt>thread->start();</tt><br>
<br>
<div>28.05.2014 03:24, Krisztian Olah пишет:<br>
</div>
<blockquote type="cite">
<div>
<div class="h5">
<div dir="ltr"> Hi list,
<div> I have a rather large xml file to parse and
it causes the UI to freeze, I assingned the
parser to a different thread, but it doesn't
help much. According to the Qt documentation
QThread::setPriority() doesn't work on Linux, is
there some kind of workaround that could be
used?</div>
<div><br>
</div>
<div>Thanks</div>
<div>Kris</div>
</div>
<br>
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