mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-05-31 22:58:11 +00:00
threadshare: save upgrade in Pad functions
When initializing Pad functions in `Pad{Src,Sink}`, we downgrade the
`Pad{Src,Sink}` and upgrade it when necessary. This was implemented
to avoid reference cycles:
`gst::Pad` -> pad function -> `Pad{Src,Sink}` -> `gst::Pad`.
Since `Pad{Src,Sink}` reset the pad functions when dropping, there is
no cycles, so we can use an `Arc<Pad{Src,Sink}>` in the pad functions,
thus saving an `upgrade`.
This commit is contained in:
François Laignel
parent
26634f591a
commit
8e38d861b4
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@ -445,11 +445,11 @@ impl PadSrc {
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fn init_pad_functions<H: PadSrcHandler>(&self, handler: H) {
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_activate_function(move |gst_pad, parent| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| {
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@ -457,18 +457,18 @@ impl PadSrc {
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Err(gst_loggable_error!(RUNTIME_CAT, "Panic in PadSrc activate"))
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},
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSrc no longer exists");
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let this_ref = PadSrcRef::new(inner_arc);
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handler.src_activate(&this_ref, imp, element)
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},
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)
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});
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_activatemode_function(move |gst_pad, parent, mode, active| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| {
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@ -479,7 +479,7 @@ impl PadSrc {
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))
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},
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSrc no longer exists");
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let this_ref = PadSrcRef::new(inner_arc);
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this_ref.activate_mode_hook(mode, active)?;
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handler.src_activatemode(&this_ref, imp, element, mode, active)
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},
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@ -489,31 +489,31 @@ impl PadSrc {
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// No need to `set_event_function` since `set_event_full_function`
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// overrides it and dispatches to `src_event` when necessary
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_event_full_function(move |_gst_pad, parent, event| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| Err(FlowError::Error),
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSrc no longer exists");
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let this_ref = PadSrcRef::new(inner_arc);
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handler.src_event_full(&this_ref, imp, &element, event)
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},
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)
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});
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_query_function(move |_gst_pad, parent, query| {
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let handler = handler.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| false,
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSrc no longer exists");
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let this_ref = PadSrcRef::new(inner_arc);
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if !query.is_serialized() {
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handler.src_query(&this_ref, imp, &element, query)
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} else {
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@ -870,11 +870,11 @@ impl PadSink {
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fn init_pad_functions<H: PadSinkHandler>(&self, handler: H) {
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_activate_function(move |gst_pad, parent| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| {
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@ -885,18 +885,18 @@ impl PadSink {
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))
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},
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSink no longer exists");
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let this_ref = PadSinkRef::new(inner_arc);
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handler.sink_activate(&this_ref, imp, element)
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},
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)
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});
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_activatemode_function(move |gst_pad, parent, mode, active| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| {
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@ -907,7 +907,7 @@ impl PadSink {
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))
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},
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSink no longer exists");
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let this_ref = PadSinkRef::new(inner_arc);
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this_ref.activate_mode_hook(mode, active)?;
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handler.sink_activatemode(&this_ref, imp, element, mode, active)
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@ -916,17 +916,17 @@ impl PadSink {
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});
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_chain_function(move |_gst_pad, parent, buffer| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| Err(FlowError::Error),
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move |imp, element| {
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if Context::current_has_sub_tasks() {
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let this_weak = this_weak.clone();
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let this_weak = PadSinkWeak(Arc::downgrade(&inner_arc));
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let handler = handler.clone();
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let element = element.clone();
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let delayed_fut = async move {
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@ -940,7 +940,7 @@ impl PadSink {
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Ok(gst::FlowSuccess::Ok)
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} else {
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let this_ref = this_weak.upgrade().expect("PadSink no longer exists");
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let this_ref = PadSinkRef::new(inner_arc);
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let chain_fut = handler.sink_chain(&this_ref, imp, &element, buffer);
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this_ref.handle_future(chain_fut)
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}
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@ -949,17 +949,17 @@ impl PadSink {
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});
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_chain_list_function(move |_gst_pad, parent, list| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| Err(FlowError::Error),
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move |imp, element| {
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if Context::current_has_sub_tasks() {
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let this_weak = this_weak.clone();
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let this_weak = PadSinkWeak(Arc::downgrade(&inner_arc));
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let handler = handler.clone();
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let element = element.clone();
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let delayed_fut = async move {
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@ -975,7 +975,7 @@ impl PadSink {
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Ok(gst::FlowSuccess::Ok)
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} else {
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let this_ref = this_weak.upgrade().expect("PadSink no longer exists");
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let this_ref = PadSinkRef::new(inner_arc);
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let chain_list_fut =
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handler.sink_chain_list(&this_ref, imp, &element, list);
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this_ref.handle_future(chain_list_fut)
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@ -987,19 +987,18 @@ impl PadSink {
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// No need to `set_event_function` since `set_event_full_function`
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// overrides it and dispatches to `sink_event` when necessary
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let handler_clone = handler.clone();
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_event_full_function(move |_gst_pad, parent, event| {
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let handler = handler_clone.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| Err(FlowError::Error),
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSink no longer exists");
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if event.is_serialized() {
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if Context::current_has_sub_tasks() {
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let this_weak = this_weak.clone();
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let this_weak = PadSinkWeak(Arc::downgrade(&inner_arc));
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let handler = handler.clone();
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let element = element.clone();
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let delayed_fut = async move {
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@ -1016,27 +1015,29 @@ impl PadSink {
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Ok(gst::FlowSuccess::Ok)
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} else {
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let this_ref = PadSinkRef::new(inner_arc);
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let event_fut = handler
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.sink_event_full_serialized(&this_ref, imp, &element, event);
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this_ref.handle_future(event_fut)
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}
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} else {
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let this_ref = PadSinkRef::new(inner_arc);
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handler.sink_event_full(&this_ref, imp, &element, event)
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}
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},
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)
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});
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let this_weak = self.downgrade();
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let inner_arc = Arc::clone(&(self.0).0);
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self.gst_pad()
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.set_query_function(move |_gst_pad, parent, query| {
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let handler = handler.clone();
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let this_weak = this_weak.clone();
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let inner_arc = inner_arc.clone();
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H::ElementImpl::catch_panic_pad_function(
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parent,
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|| false,
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move |imp, element| {
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let this_ref = this_weak.upgrade().expect("PadSink no longer exists");
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let this_ref = PadSinkRef::new(inner_arc);
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if !query.is_serialized() {
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handler.sink_query(&this_ref, imp, &element, query)
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} else {
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