mpd/src/io_thread.c

/*
 * Copyright (C) 2003-2011 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 "io_thread.h"

#include <assert.h>

static struct {
	GMainContext *context;
	GMainLoop *loop;
	GThread *thread;
} io;

static gpointer
io_thread_func(G_GNUC_UNUSED gpointer arg)
{
	assert(io.context != NULL);
	assert(io.loop != NULL);

	g_main_loop_run(io.loop);
	return NULL;
}

void
io_thread_init(void)
{
	assert(io.context == NULL);
	assert(io.loop == NULL);
	assert(io.thread == NULL);

	io.context = g_main_context_new();
	io.loop = g_main_loop_new(io.context, false);
}

bool
io_thread_start(GError **error_r)
{
	assert(io.context != NULL);
	assert(io.loop != NULL);
	assert(io.thread == NULL);

	io.thread = g_thread_create(io_thread_func, NULL, true, error_r);
	if (io.thread == NULL)
		return false;

	return true;
}

void
io_thread_deinit(void)
{
	if (io.thread != NULL) {
		assert(io.loop != NULL);

		g_main_loop_quit(io.loop);
		g_thread_join(io.thread);
	}

	if (io.loop != NULL)
		g_main_loop_unref(io.loop);

	if (io.context != NULL)
		g_main_context_unref(io.context);
}

GMainContext *
io_thread_context(void)
{
	return io.context;
}