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Merge event control lists when disconnecting a master-ctrl
[ardour.git]
/
libs
/
ardour
/
graphnode.cc
diff --git
a/libs/ardour/graphnode.cc
b/libs/ardour/graphnode.cc
index cfcea4d72640f703fec5874dcafb103d15c26913..47cabfbae09ae7c4152bc39bc3d4709b5233efb3 100644
(file)
--- a/
libs/ardour/graphnode.cc
+++ b/
libs/ardour/graphnode.cc
@@
-24,43
+24,57
@@
using namespace ARDOUR;
using namespace ARDOUR;
-GraphNode::GraphNode (graph_ptr_t graph)
- : _graph(graph)
-{
+GraphNode::GraphNode (boost::shared_ptr<Graph> graph)
+ : _graph(graph)
+{
+}
+
+GraphNode::~GraphNode()
+{
}
void
GraphNode::prep (int chain)
{
}
void
GraphNode::prep (int chain)
{
- _refcount = _init_refcount[chain];
+ /* This is the number of nodes that directly feed us */
+ _refcount = _init_refcount[chain];
}
}
+/** Called by another node to tell us that one of the nodes that feed us
+ * has been processed.
+ */
void
GraphNode::dec_ref()
{
void
GraphNode::dec_ref()
{
- if (g_atomic_int_dec_and_test (&_refcount))
- _graph->trigger (this);
+ if (g_atomic_int_dec_and_test (&_refcount)) {
+ /* All the nodes that feed us are done, so we can queue this node
+ * for processing.
+ */
+ _graph->trigger (this);
+ }
}
void
GraphNode::finish (int chain)
{
}
void
GraphNode::finish (int chain)
{
-
node_set_t::iterator i;
-
bool feeds_somebody = false;
+ node_set_t::iterator i;
+ bool feeds_somebody = false;
- for (i=_activation_set[chain].begin(); i!=_activation_set[chain].end(); i++) {
- (*i)->dec_ref();
- feeds_somebody = true;
- }
+ /* Tell the nodes that we feed that we've finished */
+ for (i=_activation_set[chain].begin(); i!=_activation_set[chain].end(); i++) {
+ (*i)->dec_ref();
+ feeds_somebody = true;
+ }
- if (!feeds_somebody) {
- _graph->dec_ref();
- }
+ if (!feeds_somebody) {
+ /* This node does not feed anybody, so decrement the graph's finished count */
+ _graph->dec_ref();
+ }
}
void
GraphNode::process()
{
}
void
GraphNode::process()
{
-
_graph->process_one_route (dynamic_cast<Route *>(this));
+ _graph->process_one_route (dynamic_cast<Route *>(this));
}
}