Paul Davis
87726495c3
git-svn-id: svn://localhost/ardour2/branches/2.1-staging@1752 d708f5d6-7413-0410-9779-e7cbd77b26cf
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/*
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Copyright (C) 2000-2007 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __pbd__crossthread_h__
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#define __pbd__crossthread_h__
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#include <pbd/abstract_ui.h>
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#include <sigc++/sigc++.h>
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#include <pthread.h>
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template<class RequestType>
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void
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call_slot_from_thread_or_dispatch_it (pthread_t thread_id, AbstractUI<RequestType>& ui, sigc::slot<void> theSlot)
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{
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/* when called, this function will determine whether the calling thread
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is the same as thread specified by the first argument. if it is,
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the we execute the slot. if not, we ask the interface given by the second
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argument to call the slot.
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*/
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if (pthread_self() == thread_id) {
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theSlot ();
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} else {
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ui.call_slot (theSlot);
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}
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}
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template<class RequestType>
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sigc::slot<void>
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crossthread_safe (pthread_t thread_id, AbstractUI<RequestType>& ui, sigc::slot<void> theSlot)
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{
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/* this function returns a slot that will ensure that theSlot is either
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called by the specified thread or passed to the interface via
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AbstractUI::call_slot().
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*/
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return sigc::bind (sigc::ptr_fun (call_slot_from_thread_or_dispatch_it<RequestType>),
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thread_id, ui, theSlot);
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}
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#endif /* __pbd__crossthread_h__ */
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