From e242f3999c7f0219926877e4accf4763fec2972c Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Wed, 24 Aug 2011 02:34:28 +0200 Subject: io_thread: new thread for non-blocking background I/O Try to eliminate the remaining blocking I/O. --- src/io_thread.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 src/io_thread.c (limited to 'src/io_thread.c') diff --git a/src/io_thread.c b/src/io_thread.c new file mode 100644 index 000000000..69d6fb71a --- /dev/null +++ b/src/io_thread.c @@ -0,0 +1,85 @@ +/* + * 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 + +static GMainContext *io_context; +static GMainLoop *io_loop; +static GThread *io_thread; + +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; +} + -- cgit v1.2.3