2 Copyright (C) 2000-2007 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __pbd__crossthread_h__
21 #define __pbd__crossthread_h__
23 #include <glibmm/main.h>
25 class CrossThreadChannel {
28 ~CrossThreadChannel();
31 int selectable() const { return fds[0]; }
33 int deliver (char msg);
34 int receive (char& msg);
37 static void drain (int fd);
39 /* glibmm 2.22 and earlier has a terrifying bug that will
40 cause crashes whenever a Source is removed from
41 a MainContext (including the destruction of the MainContext),
42 because the Source is destroyed "out from under the nose of"
43 the RefPtr. I (Paul) have fixed this (https://bugzilla.gnome.org/show_bug.cgi?id=561885)
44 but in the meantime, we need a hack to get around the issue.
47 Glib::RefPtr<Glib::IOSource> ios();
50 bool ok() const { return fds[0] >= 0 && fds[1] >= 0; }
53 Glib::RefPtr<Glib::IOSource>* _ios; // lazily constructed
57 #endif /* __pbd__crossthread_h__ */