New inter-thread message system.

1 files changed, 88 insertions, 0 deletions

diff --git a/src/messagehandler.cc b/src/messagehandler.cc
new file mode 100644
index 0000000..a5a71f1
--- /dev/null
+++ b/src/messagehandler.cc
@@ -0,0 +1,88 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            messagehandler.cc
+ *
+ *  Fri Jun 14 20:30:43 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 "messagehandler.h"
+
+#include <hugin.hpp>
+
+#include "messagereceiver.h"
+
+// Global messagehandler:
+MessageHandler msghandler;
+
+MessageHandler::MessageHandler()
+{
+}
+
+void MessageHandler::addReceiver(message_receiver_id_t id,
+                                 MessageReceiver *receiver)
+{
+  MutexAutolock l(mutex);
+
+  receivers[id] = receiver;
+}
+
+void MessageHandler::removeReceiver(MessageReceiver *receiver)
+{
+  MutexAutolock l(mutex);
+
+  std::map<message_receiver_id_t, MessageReceiver *>::iterator i =
+    receivers.begin();
+  while(i != receivers.end()) {
+    if(i->second == receiver) {
+      receivers.erase(i);
+      break;
+    }
+    i++;
+  }
+}
+
+bool MessageHandler::sendMessage(message_receiver_id_t id, Message* msg)
+{
+  MutexAutolock l(mutex);
+
+  if(receivers.find(id) == receivers.end()) {
+    WARN(msghandler, "Could not find id %d\n", id);
+    delete msg;
+    return false;
+  }
+
+  DEBUG(msghandler, "Sending message to id %d\n", id);
+
+  MessageReceiver *receiver = receivers[id];
+
+  if(msg->processing_mode() == Message::FilterMultiple) {
+    Message *pmsg;
+    while( (pmsg = receiver->peekMessage()) != NULL) {
+      if(pmsg->type() != Message::LoadStatus) break;
+      delete msg;
+      msg = receiver->receiveMessage();
+    }
+  }
+
+  receiver->sendMessage(msg);
+  return true;
+}