Main, IOThread: move GMainLoop setup code to class EventLoop

src/event/Loop.hxx

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_EVENT_LOOP_HXX
+#define MPD_EVENT_LOOP_HXX
+
+#include "check.h"
+#include "gcc.h"
+
+#include <glib.h>
+
+class EventLoop {
+	GMainContext *context;
+	GMainLoop *loop;
+
+public:
+	EventLoop()
+		:context(g_main_context_new()),
+		 loop(g_main_loop_new(context, false)) {}
+
+	struct Default {};
+	EventLoop(gcc_unused Default _dummy)
+		:context(g_main_context_ref(g_main_context_default())),
+		 loop(g_main_loop_new(context, false)) {}
+
+	~EventLoop() {
+		g_main_loop_unref(loop);
+		g_main_context_unref(context);
+	}
+
+	GMainContext *GetContext() {
+		return context;
+	}
+
+	void Break() {
+		g_main_loop_quit(loop);
+	}
+
+	void Run() {
+		g_main_loop_run(loop);
+	}
+
+	guint AddIdle(GSourceFunc function, gpointer data) {
+		GSource *source = g_idle_source_new();
+		g_source_set_callback(source, function, data, NULL);
+		guint id = g_source_attach(source, GetContext());
+		g_source_unref(source);
+		return id;
+	}
+
+	guint AddTimeout(guint interval_ms,
+			 GSourceFunc function, gpointer data) {
+		GSource *source = g_timeout_source_new(interval_ms);
+		g_source_set_callback(source, function, data, nullptr);
+		guint id = g_source_attach(source, GetContext());
+		g_source_unref(source);
+		return id;
+	}
+
+	guint AddTimeoutSeconds(guint interval_s,
+				GSourceFunc function, gpointer data) {
+		GSource *source = g_timeout_source_new_seconds(interval_s);
+		g_source_set_callback(source, function, data, nullptr);
+		guint id = g_source_attach(source, GetContext());
+		g_source_unref(source);
+		return id;
+	}
+};
+
+#endif /* MAIN_NOTIFY_H */