1 files changed, 119 insertions, 0 deletions
diff --git a/src/IOThread.cxx b/src/IOThread.cxx
new file mode 100644
index 000000000..dbe206af7
--- /dev/null
+++ b/src/IOThread.cxx
@@ -0,0 +1,119 @@
+/*
+ * 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.
+ */
+
+#include "config.h"
+#include "IOThread.hxx"
+#include "thread/Mutex.hxx"
+#include "thread/Cond.hxx"
+#include "event/Loop.hxx"
+#include "system/FatalError.hxx"
+
+#include <glib.h>
+
+#include <assert.h>
+
+static struct {
+	Mutex mutex;
+	Cond cond;
+
+	EventLoop *loop;
+	GThread *thread;
+} io;
+
+void
+io_thread_run(void)
+{
+	assert(io_thread_inside());
+	assert(io.loop != NULL);
+
+	io.loop->Run();
+}
+
+static gpointer
+io_thread_func(gcc_unused gpointer arg)
+{
+	/* lock+unlock to synchronize with io_thread_start(), to be
+	   sure that io.thread is set */
+	io.mutex.lock();
+	io.mutex.unlock();
+
+	io_thread_run();
+	return NULL;
+}
+
+void
+io_thread_init(void)
+{
+	assert(io.loop == NULL);
+	assert(io.thread == NULL);
+
+	io.loop = new EventLoop();
+}
+
+void
+io_thread_start()
+{
+	assert(io.loop != NULL);
+	assert(io.thread == NULL);
+
+	const ScopeLock protect(io.mutex);
+
+#if GLIB_CHECK_VERSION(2,32,0)
+	io.thread = g_thread_new("io", io_thread_func, nullptr);
+#else
+	GError *error = nullptr;
+	io.thread = g_thread_create(io_thread_func, NULL, true, &error);
+	if (io.thread == NULL)
+		FatalError(error);
+#endif
+}
+
+void
+io_thread_quit(void)
+{
+	assert(io.loop != NULL);
+
+	io.loop->Break();
+}
+
+void
+io_thread_deinit(void)
+{
+	if (io.thread != NULL) {
+		io_thread_quit();
+
+		g_thread_join(io.thread);
+	}
+
+	delete io.loop;
+}
+
+EventLoop &
+io_thread_get()
+{
+	assert(io.loop != nullptr);
+
+	return *io.loop;
+}
+
+bool
+io_thread_inside(void)
+{
+	return io.thread != NULL && g_thread_self() == io.thread;
+}