IOThread: move code to class EventThread

src/event/Thread.cxx

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2003-2017 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.
+ */
+
+#include "config.h"
+#include "Thread.hxx"
+#include "thread/Name.hxx"
+
+void
+EventThread::Start()
+{
+	assert(!thread.IsDefined());
+
+	const std::lock_guard<Mutex> protect(mutex);
+	thread.Start(ThreadFunc, this);
+}
+
+void
+EventThread::Stop()
+{
+	if (thread.IsDefined()) {
+		event_loop.Break();
+		thread.Join();
+	}
+}
+
+void
+EventThread::ThreadFunc()
+{
+	SetThreadName("io");
+
+	/* lock+unlock to synchronize with io_thread_start(), to be
+	   sure that io.thread is set */
+	mutex.lock();
+	mutex.unlock();
+
+	event_loop.Run();
+};
+
+void
+EventThread::ThreadFunc(void *arg)
+{
+	auto &et = *(EventThread *)arg;
+
+	et.ThreadFunc();
+};