typename _Bundle> void BundleFlattener<_BaseType, _Scalar, _Vector, _VectorBit,
_Bundle>::visit(_Bundle& bundle) throw (Error) {
try {
BundleFlattener<_BaseType, _Scalar, _Vector, _VectorBit, _Bundle> flattener;
VisitorApplier<BundleFlattener<_BaseType, _Scalar, _Vector, _VectorBit, _Bundle> >
applier(flattener);
bundle.applyOnAllChildren(applier);
} catch(Error& e) {
e.setCurrentLocation(__FUNCTION__, __FILE__, __LINE__);
throw;
}
}
bool RenderSVGShape::shapeDependentStrokeContains(const FloatPoint& point)
{
ASSERT(m_path);
BoundingRectStrokeStyleApplier applier(this, style());
if (hasNonScalingStroke()) {
AffineTransform nonScalingTransform = nonScalingStrokeTransform();
Path* usePath = nonScalingStrokePath(m_path.get(), nonScalingTransform);
return usePath->strokeContains(&applier, nonScalingTransform.mapPoint(point));
}
return m_path->strokeContains(&applier, point);
}
typename _Bundle> void BundleFlattener<_BaseType, _Scalar, _Vector, _VectorBit,
_Bundle>::visit(_Vector& vector) throw (Error) {
try {
typename _Vector::List children;
vector.getChildren(children);
BundleFlattener<_BaseType, _Scalar, _Vector, _VectorBit, _Bundle> flattener;
VisitorApplier<BundleFlattener<_BaseType, _Scalar, _Vector, _VectorBit, _Bundle> > applier(
flattener);
for_each(children.begin(), children.end(), applier);
} catch(Error& e) {
e.setCurrentLocation(__FUNCTION__, __FILE__, __LINE__);
throw;
}
}
template <typename _ReturnType> void PortRefCreator<_ReturnType>::visit(PortBundle& port)
throw (Error) {
try {
PortBundleReferenceSharedPtr portBundleRef;
mFactory->create(portBundleRef);
PortRefCreator<PortReferenceSharedPtr> creator(mFactory, mInstance, portBundleRef);
VisitorApplier<PortRefCreator<PortReferenceSharedPtr> > applier(creator);
port.applyOnAllChildren(applier);
setupCreatedPort(port.getSharedThis(), portBundleRef);
mReturnValue = portBundleRef;
} catch(Error& e) {
e.setCurrentLocation(__FUNCTION__, __FILE__, __LINE__);
throw;
}
}
void GUI::FilterConfigurationBox::updatePreview() {
Model::FilterList filterList;
filterList.appendFilter(tempFilter_->getName())->restore(tempFilter_->getSaveString());
auto avframe=Utility::VideoConverter::convertQImageToAVFrame(getDefaultImage());
Utility::FilterApplier applier(filterList,avframe->width,avframe->height,avframe->format);
auto filteredFrame=applier.applyToFrame(*avframe);
filteredImage_=Utility::VideoConverter::convertAVFrameToQImage(*filteredFrame);
filterPreview_->setFrame(*filteredImage_);
av_frame_unref(avframe);
av_frame_unref(filteredFrame);
av_frame_free(&avframe);
av_frame_free(&filteredFrame);
}
bool RenderSVGShape::shapeDependentStrokeContains(const FloatPoint& point) const
{
BoundingRectStrokeStyleApplier applier(this, style());
return m_path->strokeContains(&applier, point);
}
void WorkQueue::concurrentApply(size_t iterations, const std::function<void (size_t index)>& function)
{
if (!iterations)
return;
if (iterations == 1) {
function(0);
return;
}
class ThreadPool {
public:
ThreadPool()
{
// We don't need a thread for the current core.
unsigned threadCount = numberOfProcessorCores() - 1;
m_workers.reserveInitialCapacity(threadCount);
for (unsigned i = 0; i < threadCount; ++i) {
m_workers.append(createThread(String::format("ThreadPool Worker %u", i).utf8().data(), [this] {
threadBody();
}));
}
}
size_t workerCount() const { return m_workers.size(); }
void dispatch(const std::function<void ()>* function)
{
LockHolder holder(m_lock);
m_queue.append(function);
m_condition.notifyOne();
}
private:
NO_RETURN void threadBody()
{
while (true) {
const std::function<void ()>* function;
{
LockHolder holder(m_lock);
m_condition.wait(m_lock, [this] {
return !m_queue.isEmpty();
});
function = m_queue.takeFirst();
}
(*function)();
}
}
Lock m_lock;
Condition m_condition;
Deque<const std::function<void ()>*> m_queue;
Vector<ThreadIdentifier> m_workers;
};
static LazyNeverDestroyed<ThreadPool> threadPool;
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
threadPool.construct();
});
// Cap the worker count to the number of iterations (excluding this thread)
const size_t workerCount = std::min(iterations - 1, threadPool->workerCount());
std::atomic<size_t> currentIndex(0);
std::atomic<size_t> activeThreads(workerCount + 1);
Condition condition;
Lock lock;
std::function<void ()> applier = [&] {
size_t index;
// Call the function for as long as there are iterations left.
while ((index = currentIndex++) < iterations)
function(index);
// If there are no active threads left, signal the caller.
if (!--activeThreads) {
LockHolder holder(lock);
condition.notifyOne();
}
};
for (size_t i = 0; i < workerCount; ++i)
threadPool->dispatch(&applier);
applier();
LockHolder holder(lock);
condition.wait(lock, [&] { return !activeThreads; });
}
