Bad memory usage on QWebView I think

[jiturra]

Hi,

I'm new programming QT and c++.
I use QT 4.5 rc1 on Linux Debian.

Recently I discover the memory usage of my program is increasing after every web page visited.
After many hours looking for memory leaks, I make one simple application with only one QWebView and load one URL. Then after every loadFinished() signal, reload the same page over and over again.

Result: the memory usage report by "top" increasing rapidly and don't know why.

This is mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent), ui(new Ui::MainWindowClass)
{
    ui->setupUi(this);
    connect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(load()));
 
    QWebPage *page = ui->webView->page();
    QWebHistory *history = page->history();
    history->setMaximumItemCount(0);
 
    QWebSettings *settings = ui->webView->settings();
    settings->setMaximumPagesInCache(0);
    settings->setObjectCacheCapacities(0, 0, 0);
    settings->setIconDatabasePath("");
 
    settings->setAttribute(QWebSettings::JavascriptEnabled, true);
    settings->setAttribute(QWebSettings::PluginsEnabled, true);
    settings->setAttribute(QWebSettings::AutoLoadImages, true);
    settings->setAttribute(QWebSettings::JavaEnabled, false);
    settings->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
    settings->setAttribute(QWebSettings::JavascriptCanOpenWindows, true);
    settings->setAttribute(QWebSettings::JavascriptCanAccessClipboard, false);
 
 
    ui->webView->setUrl(QUrl("http://<url>"));
}
 
MainWindow::~MainWindow()
{
    delete ui;
}
 
void MainWindow::load()
{
    ui->webView->setUrl(QUrl("http://<url>"));
}

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent), ui(new Ui::MainWindowClass)
{
    ui->setupUi(this);
    connect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(load()));

    QWebPage *page = ui->webView->page();
    QWebHistory *history = page->history();
    history->setMaximumItemCount(0);

    QWebSettings *settings = ui->webView->settings();
    settings->setMaximumPagesInCache(0);
    settings->setObjectCacheCapacities(0, 0, 0);
    settings->setIconDatabasePath("");

    settings->setAttribute(QWebSettings::JavascriptEnabled, true);
    settings->setAttribute(QWebSettings::PluginsEnabled, true);
    settings->setAttribute(QWebSettings::AutoLoadImages, true);
    settings->setAttribute(QWebSettings::JavaEnabled, false);
    settings->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
    settings->setAttribute(QWebSettings::JavascriptCanOpenWindows, true);
    settings->setAttribute(QWebSettings::JavascriptCanAccessClipboard, false);


    ui->webView->setUrl(QUrl("http://<url>"));
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::load()
{
    ui->webView->setUrl(QUrl("http://<url>"));
}

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I think qtwebkit isn't free memory or I'm do something bad, but don't know what can be.

Please, if you have any suggestions, help me.

(sorry for my not very good english)

Joel