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livetrax/libs/pbd/pbd/event_loop.h
Carl Hetherington 8a8552c4cb Allow cross-thread request invalidators to cope with multiple requests
being logged before they are handled, and to invalidate them all rather
than just the last one.  Fixes shutdown problems when the PortMatrix has
been opened during the session, during which PortRegisteredOrUnregistered
is emitted quite heavily.


git-svn-id: svn://localhost/ardour2/branches/3.0@6852 d708f5d6-7413-0410-9779-e7cbd77b26cf
2010-04-03 00:42:39 +00:00

78 lines
2.1 KiB
C++

/*
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 {
std::list<BaseRequestObject*> requests;
PBD::EventLoop* event_loop;
const char* file;
int line;
InvalidationRecord() : 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__ */