#ifndef fsm_queue_hh #define fsm_queue_hh // io-hub - Modular Input/Output. {{{ // // Copyright (C) 2013 Nicolas Schodet // // APBTeam: // Web: http://apbteam.org/ // Email: team AT apbteam DOT org // // 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // }}} #include "ucoolib/common.hh" #include "fsm.hh" /// Handle asynchronous FSM event queue. class FsmQueue { public: /// Constructor. FsmQueue (); /// Post an event to be processed in the next main loop. void post (Event e); /// Poll for event (return true if there is an event pending). bool poll () const { return nb_ != 0; } /// Pop one event from the queue. Event pop (); private: /// Maximum number of events in the queue. static const int queue_size_ = 8; /// Events to post to the FSM in next iteration. Event events_[queue_size_]; /// First event in the queue. int head_; /// Number of events in the queue. int nb_; }; #endif // fsm_queue_hh