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/*
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 __pbd_event_loop_h__
#define __pbd_event_loop_h__
#include <boost/function.hpp>
#include <boost/bind.hpp> /* we don't need this here, but anything calling call_slot() probably will, so this is convenient */
#include <glibmm/thread.h>
namespace PBD
{
class EventLoop
{
public:
EventLoop() {}
virtual ~EventLoop() {}
enum RequestType {
range_guarantee = ~0
};
struct BaseRequestObject;
struct InvalidationRecord {
BaseRequestObject* request;
PBD::EventLoop* event_loop;
const char* file;
int line;
InvalidationRecord() : request (0), event_loop (0) {}
};
static void* invalidate_request (void* data);
struct BaseRequestObject {
RequestType type;
bool valid;
InvalidationRecord* invalidation;
boost::function<void()> the_slot;
BaseRequestObject() : valid (true), invalidation (0) {}
};
virtual void call_slot (InvalidationRecord*, const boost::function<void()>&) = 0;
virtual Glib::Mutex& slot_invalidation_mutex() = 0;
static EventLoop* get_event_loop_for_thread();
static void set_event_loop_for_thread (EventLoop* ui);
private:
static Glib::StaticPrivate<EventLoop> thread_event_loop;
};
}
#define MISSING_INVALIDATOR 0 // used to mark places where we fail to provide an invalidator
#endif /* __pbd_event_loop_h__ */
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