Hi,all！
I want to implementation a Javascript parse server,which used
threadpool.So, when the program started, the main thread created some child
thread,and main thread accept input data(the html code),distribute the input
data to child thread, child thread execute the Javascript in the input data.
when the input data has been processed,the child thread return the output
data(the html code after Javascript has been execute) and wait for next job.
I read some article,and write some code,but i can't understand the multithread
part of qt,so, can anybody help me to finish my program,or give me some pseudo
code? (I'm a newbie, and i have not enough time to study qt's multithread)
Thanks!
class WebCapture : public QObject
{
Q_OBJECT
public:
WebCapture();
void parse();
QString getOutput();
signals:
void finished();
private slots:
void saveResult(bool ok);
private:
QWebPage m_page;
QString output;
};
WebCapture::WebCapture(): QObject()
{
connect(&m_page, SIGNAL(loadFinished(bool)), this, SLOT(saveResult(bool)));
}
void WebCapture::parse(QString source,QString base_url)
{
output = "";
QUrl url(base_url);
m_page.mainFrame()->setHtml(source, base_url);
return ;
}
void WebCapture::saveResult(bool ok)
{
if (!ok)
{
emit finished();
return;
}
output = m_page.mainFrame()->toHtml.toStdString();
emit finished();
}
QString WebCapture::getOutput()
{
return output;
}
class Thread : public QThread
{
Q_OBJECT
public:
void run();
wait4data();//wait for input,blocked
signals:
private:
WebCapture wc;//which is used to process input data
};
Thread::wait4data()
{
//TODO
}
void Thread::run()
{
QApplication a(argc, argv);
QObject::connect(&wc, SIGNAL(finished()), QApplication::instance(),
SLOT(quit()));
while(true)
{
//TODO
wait4data();
wc.parse(inputdata);
a.exec();
//send output to main thread
}
}
#include "JSServer.moc"
int main(int argc, char* argv[])
{
int threads = 10;
Thread* ptr = new Thread[threads];
for(int i = 0; i < threads; ++i)
{
ptr[i].start();
}
while(true)
{
wait4input();//wait input data
distribute();//distribute input data to a idle child thread,and i think
the output should returned asychronous
}
for(int i = 0; i < 4; ++i)
{
ptr[i].wait();
}
return 0;
}
Zhou [email protected],
[email protected]
2011-03-21 _______________________________________________
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