New inter-thread message system.

1 files changed, 79 insertions, 0 deletions

diff --git a/src/messagereceiver.cc b/src/messagereceiver.cc
new file mode 100644
index 0000000..f391aad
--- /dev/null
+++ b/src/messagereceiver.cc
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            messagereceiver.cc
+ *
+ *  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.
+ */
+#include "messagereceiver.h"
+
+#include <hugin.hpp>
+
+MessageReceiver::MessageReceiver(message_receiver_id_t id)
+{
+  msghandler.addReceiver(id, this);
+}
+
+MessageReceiver::~MessageReceiver()
+{
+  msghandler.removeReceiver(this);
+}
+
+void MessageReceiver::sendMessage(Message *msg)
+{
+  MutexAutolock l(message_mutex);
+
+  message_queue.push_back(msg);
+}
+
+Message *MessageReceiver::receiveMessage()
+{
+  MutexAutolock l(message_mutex);
+  Message *msg = NULL;
+  if(message_queue.size()) {
+    msg = message_queue.front();
+    message_queue.pop_front();
+  }
+  return msg;
+}
+
+Message *MessageReceiver::peekMessage()
+{
+  MutexAutolock l(message_mutex);
+  Message *msg = NULL;
+  if(message_queue.size()) {
+    msg = message_queue.front();
+  }
+  return msg;
+}
+
+void MessageReceiver::handleMessages(size_t max)
+{
+  bool process_all = false;
+  if(max == 0) process_all = true;
+
+  while((process_all || max--) && peekMessage()) {
+    Message *msg = receiveMessage();
+    handleMessage(msg);
+    delete msg;
+  }
+}