switch to using boost::signals2 instead of sigc++, at least for libardour. not finished yet, but compiles, loads sessions, records and can close a session without a crash

git-svn-id: svn://localhost/ardour2/branches/3.0@6372 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 57 insertions, 0 deletions

diff --git a/libs/ardour/ardour/session_handle.h b/libs/ardour/ardour/session_handle.h
new file mode 100644
index 0000000000..c747ee9976
--- /dev/null
+++ b/libs/ardour/ardour/session_handle.h
@@ -0,0 +1,57 @@
+/*
+    Copyright (C) 2009 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __libardour_session_handle_h__
+#define __libardour_session_handle_h__
+
+#include "pbd/scoped_connections.h"
+
+namespace ARDOUR {
+	class Session;
+
+class SessionHandleRef : public PBD::ScopedConnectionList
+{
+  public:
+	SessionHandleRef (ARDOUR::Session& s);
+	virtual ~SessionHandleRef () {}
+
+  protected:
+	ARDOUR::Session&          _session;
+	virtual void session_going_away ();
+};
+
+class SessionHandlePtr
+{
+  public:
+	SessionHandlePtr (ARDOUR::Session* s);
+	SessionHandlePtr () : _session (0) {}
+	virtual ~SessionHandlePtr () {}
+
+	virtual void set_session (ARDOUR::Session *);
+
+  protected:
+	ARDOUR::Session*          _session;
+	PBD::ScopedConnectionList _session_connections;
+
+	virtual void session_going_away ();
+};
+
+} /* namespace */
+
+#endif /* __libardour_session_handle_h__ */