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Only send unused buffers messages if there are actually any buffers

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Some debugging reveals that the send_back_unused_buffers() quite often
sends empty vectors back to the paint task. This still incurs an
communication overhead though. Instead check that the there actually are
buffers to send back.
This commit is contained in:
Thomas Jespersen 2015-04-07 17:52:42 +02:00
parent 1fd609d198
commit 0c1eeb2fc7
3 changed files with 11 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

17
components/compositing/compositor.rs
View file

@ -718,12 +718,9 @@ impl<Window: WindowMethods> IOCompositor<Window> {
layer_id: LayerId,
new_layer_buffer_set: Box<LayerBufferSet>,
epoch: Epoch) {
match self.find_layer_with_pipeline_and_layer_id(pipeline_id, layer_id) {
Some(layer) => {
self.assign_painted_buffers_to_layer(layer, new_layer_buffer_set, epoch);
return;
}
None => {}
if let Some(layer) = self.find_layer_with_pipeline_and_layer_id(pipeline_id, layer_id) {
self.assign_painted_buffers_to_layer(layer, new_layer_buffer_set, epoch);
return
}
let pipeline = self.get_pipeline(pipeline_id);
@ -1021,15 +1018,17 @@ impl<Window: WindowMethods> IOCompositor<Window> {
});
}
return results;
results
}
fn send_back_unused_buffers(&mut self,
unused_buffers: Vec<(Rc<Layer<CompositorData>>,
Vec<Box<LayerBuffer>>)>) {
for (layer, buffers) in unused_buffers.into_iter() {
let pipeline = self.get_pipeline(layer.get_pipeline_id());
let _ = pipeline.paint_chan.send_opt(PaintMsg::UnusedBuffer(buffers));
if !buffers.is_empty() {
let pipeline = self.get_pipeline(layer.get_pipeline_id());
let _ = pipeline.paint_chan.send_opt(PaintMsg::UnusedBuffer(buffers));
}
}
}

2
components/compositing/compositor_layer.rs
View file

@ -227,7 +227,7 @@ impl CompositorLayer for Layer<CompositorData> {
let _ = pipeline.paint_chan.send(PaintMsg::UnusedBuffer(unused_buffers));
}
return true;
true
}
fn clear<Window>(&self, compositor: &IOCompositor<Window>) where Window: WindowMethods {

5
components/layout/layout_task.rs
View file

@ -557,9 +557,8 @@ impl LayoutTask {
{
let mut rw_data = self.lock_rw_data(possibly_locked_rw_data);
match (&mut *rw_data).parallel_traversal {
None => {}
Some(ref mut traversal) => traversal.shutdown(),
if let Some(ref mut traversal) = (&mut *rw_data).parallel_traversal {
traversal.shutdown()
}
LayoutTask::return_rw_data(possibly_locked_rw_data, rw_data);
}