2 Copyright 2007-2020 Chris Tallon
4 This file is part of VOMP.
6 VOMP is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 VOMP is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with VOMP. If not, see <https://www.gnu.org/licenses/>.
20 #ifndef EVENTDISPATCHER_H
21 #define EVENTDISPATCHER_H
25 #include <condition_variable>
31 friend class EventDispatcher;
34 virtual ~EDReceiver() {};
37 virtual void call(void* userTag, bool& r_deregisterEDR, bool& r_wakeThread, bool& deleteEDR)=0; // Implementor must override this and do the actual call
38 // In the call set the following bools:
39 // r_deregisterEDR: true = remove EDReceiver from list after call
40 // r_wakeThread: true = wake up a RequestResponse thread which is waiting for a VDR response
41 // r_deleteEDR: true = delete the EDReceiver object once the call has finished
43 bool callinprogress{};
45 std::condition_variable cond;
51 typedef std::list<EDReceiver*> EDRL;
53 virtual ~EventDispatcher() {};
56 void edRegister(EDReceiver* edr);
57 void edUnregister(EDReceiver* edr);
58 bool edFindAndCall(void* userTag);
61 void edSleepThisReceiver(EDReceiver* edr);
63 // EventDispatcher implementor must override the following. When edFindAndCall is called,
64 // The EventDispatcher class will call ed_cb_find() on each receiver until the implementor
65 // returns true = this is the receiver to call.
66 virtual bool ed_cb_find(EDReceiver* edr, void* userTag)=0;