New inter-thread message system.

1 files changed, 74 insertions, 0 deletions

diff --git a/src/messagereceiver.h b/src/messagereceiver.h
new file mode 100644
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+++ b/src/messagereceiver.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            messagereceiver.h
+ *
+ *  Sun Jun 16 12:09:06 CEST 2013
+ *  Copyright 2013 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo 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.
+ *
+ *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_MESSAGERECEIVER_H__
+#define __DRUMGIZMO_MESSAGERECEIVER_H__
+
+#include <list>
+
+#include "mutex.h"
+#include "message.h"
+#include "messagehandler.h"
+
+class MessageReceiver {
+public:
+  MessageReceiver(message_receiver_id_t id);
+  ~MessageReceiver();
+
+  /**
+   * Receive message from the message queue.
+   */
+  Message *receiveMessage();
+
+  /**
+   * Receive message from the message queue without removing it.
+   */
+  Message *peekMessage();
+
+  /**
+   * Add a message to the message queue.
+   */
+  void sendMessage(Message *msg);
+
+  /**
+   * Handle messages from the event queue.
+   * @param max_number_of_events the maximum number of events to be handled in
+   * this call. 0 means all.
+   */
+  void handleMessages(size_t max_number_of_events = 0);
+
+  /**
+   * Handler to be implemented in child classes.
+   * Handles a single event.
+   */
+  virtual void handleMessage(Message *msg) = 0;
+
+private:
+  Mutex message_mutex;
+  std::list<Message *> message_queue;
+};
+
+#endif/*__DRUMGIZMO_MESSAGERECEIVER_H__*/