我正在开发一个应用程序,它使用 QtNetworkAccessManager 向服务器发送请求并存储回复。我已经让它工作了,但是内存使用量不断增加,直到它阻塞了整个 PC。我认为这个问题与调用 deletelater() 和事件循环有关,但我不知道如何解决它。这是代码:
主文件
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
ReadConfig();
Ethernet M2;
return a.exec();
}
以太网.h
class Ethernet : public QObject
{
Q_OBJECT
public:
Ethernet();
~Ethernet();
QTimer *timer;
private
QNetworkAccessManager *manager;
public slots:
void Cycle();
void replyAuthenticationRequired(QNetworkReply *reply, QAuthenticator *auth);
void replyFinished(QNetworkReply *reply);
};
以太网.cpp
Ethernet::Ethernet()
{
timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(Cycle()));
timer->start(1000);
manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(authenticationRequired(QNetworkReply*,QAuthenticator*)), this, SLOT(replyAuthenticationRequired(QNetworkReply*,QAuthenticator*)));
connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));
}
void Ethernet::Cycle()
{
for (BYTE i=0; i< NUM_TOTAL_VEHICLES; i++)
{
FailCheck(i,FILTER_VALUE_PRIORITY_A1);
FailCheck(i,FILTER_VALUE_PRIORITY_A);
FailCheck(i,FILTER_VALUE_PRIORITY_B);
FailCheck(i,FILTER_VALUE_PRIORITY_C);
}
}
void Ethernet::FailCheck (BYTE coach, BYTE priority)
{
//Build a valid URL
QString qsURL = "http://";
...
..
.
//
manager->get(QNetworkRequest(QUrl(qsURL)));
}
void Ethernet::replyAuthenticationRequired(QNetworkReply *reply, QAuthenticator *auth)
{
if(!reply->error())
{
auth->setUser(DB_USR);
auth->setPassword(DB_PWD);
}
reply->deleteLater();
}
void Ethernet::replyFinished (QNetworkReply *reply)
{
if(!reply->error())
{
//Do some task with the reply;
}
reply->deleteLater();
}
我将不胜感激任何建议。谢谢!