yukijoou/kwin
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

[kwin/aurorae] Add mutex locker around access to the render buffer

Browse source 
We were facing crashes when the buffer image was being read from and
written to at the same time.
This commit is contained in:
Martin Gräßlin 2013-11-14 09:01:42 +01:00
parent 73e0a6586c
commit 719923d410
2 changed files with 6 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
clients/aurorae/src/aurorae.cpp
View file

@ -21,6 +21,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <QApplication>
#include <QDebug>
#include <QMutex>
#include <QOpenGLFramebufferObject>
#include <QPainter>
#include <QQmlComponent>
@ -235,6 +236,7 @@ AuroraeClient::AuroraeClient(KDecorationBridge *bridge, KDecorationFactory *fact
: KDecoration(bridge, factory)
, m_view(NULL)
, m_item(AuroraeFactory::instance()->createQmlDecoration(this))
, m_mutex(new QMutex(QMutex::Recursive))
{
connect(AuroraeFactory::instance(), SIGNAL(buttonsChanged()), SIGNAL(buttonsChanged()));
connect(AuroraeFactory::instance(), SIGNAL(configChanged()), SIGNAL(configChanged()));
@ -271,6 +273,7 @@ void AuroraeClient::init()
m_view->setRenderTarget(m_fbo.data());
});
connect(m_view, &QQuickWindow::afterRendering, [this]{
QMutexLocker locker(m_mutex.data());
m_buffer = m_fbo->toImage();
});
connect(m_view, &QQuickWindow::afterRendering, this,
@ -551,6 +554,7 @@ bool AuroraeClient::animationsSupported() const
void AuroraeClient::render(QPaintDevice *device, const QRegion &sourceRegion)
{
QMutexLocker locker(m_mutex.data());
QPainter painter(device);
painter.setClipRegion(sourceRegion);
painter.drawImage(QPoint(0, 0), m_buffer);

2
clients/aurorae/src/aurorae.h
View file

@ -23,6 +23,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <kdecoration.h>
#include <kdecorationfactory.h>
class QMutex;
class QOpenGLFramebufferObject;
class QQmlComponent;
class QQmlEngine;
@ -160,6 +161,7 @@ private:
QScopedPointer<QQuickItem> m_item;
QScopedPointer<QOpenGLFramebufferObject> m_fbo;
QImage m_buffer;
QScopedPointer<QMutex> m_mutex;
};
}