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 <pbd/abstract_ui.h>
24 #include <sigc++/sigc++.h>
27 template<class RequestType>
29 call_slot_from_thread_or_dispatch_it (pthread_t thread_id, AbstractUI<RequestType>& ui, sigc::slot<void> theSlot)
31 /* when called, this function will determine whether the calling thread
32 is the same as thread specified by the first argument. if it is,
33 the we execute the slot. if not, we ask the interface given by the second
34 argument to call the slot.
37 if (pthread_self() == thread_id) {
40 ui.call_slot (theSlot);
44 template<class RequestType>
46 crossthread_safe (pthread_t thread_id, AbstractUI<RequestType>& ui, sigc::slot<void> theSlot)
48 /* this function returns a slot that will ensure that theSlot is either
49 called by the specified thread or passed to the interface via
50 AbstractUI::call_slot().
53 return sigc::bind (sigc::ptr_fun (call_slot_from_thread_or_dispatch_it<RequestType>),
54 thread_id, ui, theSlot);
57 #endif /* __pbd__crossthread_h__ */