fix potential crash at session close (when port-matrix is visible)

[ardour.git] / gtk2_ardour / port_matrix.cc

diff --git a/gtk2_ardour/port_matrix.cc b/gtk2_ardour/port_matrix.cc
index e8108555e6f552d71e9aab673824aae42236291b..bf9da544e6b36fe4c4ecb5f37098ea6f157fc5ab 100644 (file)
--- a/gtk2_ardour/port_matrix.cc
+++ b/gtk2_ardour/port_matrix.cc
@@ -43,6 +43,7 @@
 using namespace std;
 using namespace Gtk;
 using namespace ARDOUR;
+using namespace ARDOUR_UI_UTILS;
 
 /** PortMatrix constructor.
  *  @param session Our session.
@@ -158,7 +159,7 @@ PortMatrix::init ()
        _session->engine().PortRegisteredOrUnregistered.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports, this), gui_context());
 
        /* watch for route order keys changing, which changes the order of things in our global ports list(s) */
-       Route::SyncOrderKeys.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports_proxy, this, _1), gui_context());
+       Route::SyncOrderKeys.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports_proxy, this), gui_context());
 
        /* Part 3: other stuff */
 
@@ -609,6 +610,7 @@ PortMatrix::disassociate_all_on_channel (boost::weak_ptr<Bundle> bundle, uint32_
 void
 PortMatrix::setup_global_ports ()
 {
+       if (!_session || _session->deletion_in_progress()) return;
        ENSURE_GUI_THREAD (*this, &PortMatrix::setup_global_ports)
 
        for (int i = 0; i < 2; ++i) {
@@ -619,15 +621,13 @@ PortMatrix::setup_global_ports ()
 }
 
 void
-PortMatrix::setup_global_ports_proxy (RouteSortOrderKey sk)
+PortMatrix::setup_global_ports_proxy ()
 {
-       if (sk == EditorSort) {
-               /* Avoid a deadlock by calling this in an idle handler: see IOSelector::io_changed_proxy
-                  for a discussion.
-               */
+       /* Avoid a deadlock by calling this in an idle handler: see IOSelector::io_changed_proxy
+          for a discussion.
+       */
                
-               Glib::signal_idle().connect_once (sigc::mem_fun (*this, &PortMatrix::setup_global_ports));
-       }
+       Glib::signal_idle().connect_once (sigc::mem_fun (*this, &PortMatrix::setup_global_ports));
 }
 
 void
@@ -709,7 +709,7 @@ PortMatrix::io_from_bundle (boost::shared_ptr<Bundle> b) const
 bool
 PortMatrix::can_add_channels (boost::shared_ptr<Bundle> b) const
 {
-       return io_from_bundle (b);
+       return io_from_bundle (b) != 0;
 }
 
 void
@@ -732,7 +732,7 @@ PortMatrix::add_channel (boost::shared_ptr<Bundle> b, DataType t)
 bool
 PortMatrix::can_remove_channels (boost::shared_ptr<Bundle> b) const
 {
-       return io_from_bundle (b);
+       return io_from_bundle (b) != 0;
 }
 
 void