Add initial sketch to shill repository

shill_event.cc

Index: shill_event.cc
diff --git a/shill_event.cc b/shill_event.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6b1356ad15feb1b2a72182a4344eeebe434f8668
--- /dev/null
+++ b/shill_event.cc
@@ -0,0 +1,53 @@
+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stdio.h>
+#include <glib.h>
+
+#include "shill/shill_event.h"
+
+namespace shill {
+
+EventQueueItem::EventQueueItem(EventDispatcher *dispatcher)
+  : dispatcher_(dispatcher) {
+  dispatcher->RegisterCallbackQueue(this);
+}
+
+EventQueueItem::~EventQueueItem() {
+  dispatcher_->UnregisterCallbackQueue(this);
+}
+
+void EventQueueItem::AlertDispatcher() {
+  dispatcher_->ExecuteOnIdle();
+}
+
+void EventDispatcher::DispatchEvents() {
+  for (size_t idx = 0; idx < queue_list_.size(); ++idx)
+    queue_list_[idx]->Dispatch();
+}
+
+static gboolean DispatchEventsHandler(gpointer data) {
+  EventDispatcher *dispatcher = static_cast<EventDispatcher *>(data);
+  dispatcher->DispatchEvents();
+  return false;
+}
+
+void EventDispatcher::ExecuteOnIdle() {
+  g_idle_add(&DispatchEventsHandler, this);
+}
+
+void EventDispatcher::RegisterCallbackQueue(EventQueueItem *queue) {
+  queue_list_.push_back(queue);
+}
+
+void EventDispatcher::UnregisterCallbackQueue(EventQueueItem *queue) {
+  for (size_t idx = 0; idx < queue_list_.size(); ++idx) {
+    if (queue_list_[idx] == queue) {
+      queue_list_.erase(queue_list_.begin() + idx);
+      return;
+    }
+  }
+}
+
+}  // namespace shill