X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Fgraph.h;h=239f9ad1abec406c2976e2d1dc48d83cdad47221;hb=f8a6213454c7a0a80114ffa01c8ce432b19f4617;hp=18a8c7a4c94e1c2f5535cbbd82c79e6bb8eabe23;hpb=1d2636d76df3f6fd5eb0148f9284185561b0d2ab;p=ardour.git

diff --git a/libs/ardour/ardour/graph.h b/libs/ardour/ardour/graph.h
index 18a8c7a4c9..239f9ad1ab 100644
--- a/libs/ardour/ardour/graph.h
+++ b/libs/ardour/ardour/graph.h
@@ -28,14 +28,13 @@
 
 #include <boost/shared_ptr.hpp>
 
-#include <glib/gatomic.h>
-#include <cassert>
-
-#include <pthread.h>
+#include <glib.h>
 
 #include "pbd/semutils.h"
 
+#include "ardour/libardour_visibility.h"
 #include "ardour/types.h"
+#include "ardour/audio_backend.h"
 #include "ardour/session_handle.h"
 
 namespace ARDOUR
@@ -46,22 +45,21 @@ class Graph;
 
 class Route;
 class Session;
+class GraphEdges;
 
 typedef boost::shared_ptr<GraphNode> node_ptr_t;
 
 typedef std::list< node_ptr_t > node_list_t;
 typedef std::set< node_ptr_t > node_set_t;
 
-class Graph : public SessionHandleRef
+class LIBARDOUR_API Graph : public SessionHandleRef
 {
 public:
 	Graph (Session & session);
 
-	uint32_t threads_in_use () const { return _thread_list.size(); }
-
 	void prep();
 	void trigger (GraphNode * n);
-	void rechain (boost::shared_ptr<RouteList> r);
+	void rechain (boost::shared_ptr<RouteList>, GraphEdges const &);
 
 	void dump (int chain);
 	void process();
@@ -91,11 +89,8 @@ protected:
 	virtual void session_going_away ();
 
 private:
-	std::list<pthread_t> _thread_list;
-	volatile bool        _quit_threads;
-	PBD::ScopedConnection processor_usage_connection;
+	volatile bool        _threads_active;
 
-	void parameter_changed (std::string);
 	void reset_thread_list ();
 	void drop_threads ();
 
@@ -106,21 +101,25 @@ private:
 	std::vector<GraphNode *> _trigger_queue;
 	pthread_mutex_t          _trigger_mutex;
 
-	PBD::ProcessSemaphore _execution_sem;
+	PBD::Semaphore _execution_sem;
 
-	PBD::ProcessSemaphore _callback_start_sem;
-	PBD::ProcessSemaphore _callback_done_sem;
-	PBD::ProcessSemaphore _cleanup_sem;
+	/** Signalled to start a run of the graph for a process callback */
+	PBD::Semaphore _callback_start_sem;
+	PBD::Semaphore _callback_done_sem;
+	PBD::Semaphore _cleanup_sem;
 
+	/** The number of processing threads that are asleep */
 	volatile gint _execution_tokens;
+	/** The number of unprocessed nodes that do not feed any other node; updated during processing */
 	volatile gint _finished_refcount;
+	/** The initial number of nodes that do not feed any other node (for each chain) */
 	volatile gint _init_finished_refcount[2];
 
 	bool _graph_empty;
 
 	// chain swapping
-	Glib::Mutex  _swap_mutex;
-	Glib::Cond   _cleanup_cond;
+	Glib::Threads::Mutex  _swap_mutex;
+        Glib::Threads::Cond   _cleanup_cond;
 	volatile int _current_chain;
 	volatile int _pending_chain;
 	volatile int _setup_chain;
@@ -135,8 +134,12 @@ private:
 
 	bool _process_silent;
 	bool _process_noroll;
-	int	 _process_retval;
+	int  _process_retval;
 	bool _process_need_butler;
+
+	// enginer / thread connection
+	PBD::ScopedConnectionList engine_connections;
+	void engine_stopped ();
 };
 
 } // namespace