| /* GLIB - Library of useful routines for C programming |
| * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| * |
| * giochannel.c: IO Channel abstraction |
| * Copyright 1998 Owen Taylor |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| */ |
| |
| /* |
| * Modified by the GLib Team and others 1997-1999. See the AUTHORS |
| * file for a list of people on the GLib Team. See the ChangeLog |
| * files for a list of changes. These files are distributed with |
| * GLib at ftp://ftp.gtk.org/pub/gtk/. |
| */ |
| |
| /* |
| * MT safe |
| */ |
| |
| #include "config.h" |
| |
| #include "glib.h" |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| |
| void |
| g_io_channel_init (GIOChannel *channel) |
| { |
| channel->channel_flags = 0; |
| channel->ref_count = 1; |
| } |
| |
| |
| void |
| g_io_channel_ref (GIOChannel *channel) |
| { |
| g_return_if_fail (channel != NULL); |
| |
| channel->ref_count++; |
| } |
| |
| void |
| g_io_channel_unref (GIOChannel *channel) |
| { |
| g_return_if_fail (channel != NULL); |
| |
| channel->ref_count--; |
| if (channel->ref_count == 0) |
| channel->funcs->io_free (channel); |
| } |
| |
| GIOError |
| g_io_channel_read (GIOChannel *channel, |
| gchar *buf, |
| guint count, |
| guint *bytes_read) |
| { |
| g_return_val_if_fail (channel != NULL, G_IO_ERROR_UNKNOWN); |
| |
| return channel->funcs->io_read (channel, buf, count, bytes_read); |
| } |
| |
| GIOError |
| g_io_channel_write (GIOChannel *channel, |
| gchar *buf, |
| guint count, |
| guint *bytes_written) |
| { |
| g_return_val_if_fail (channel != NULL, G_IO_ERROR_UNKNOWN); |
| |
| return channel->funcs->io_write (channel, buf, count, bytes_written); |
| } |
| |
| GIOError |
| g_io_channel_seek (GIOChannel *channel, |
| gint offset, |
| GSeekType type) |
| { |
| g_return_val_if_fail (channel != NULL, G_IO_ERROR_UNKNOWN); |
| |
| return channel->funcs->io_seek (channel, offset, type); |
| } |
| |
| void |
| g_io_channel_close (GIOChannel *channel) |
| { |
| g_return_if_fail (channel != NULL); |
| |
| channel->funcs->io_close (channel); |
| } |
| |
| guint |
| g_io_add_watch_full (GIOChannel *channel, |
| gint priority, |
| GIOCondition condition, |
| GIOFunc func, |
| gpointer user_data, |
| GDestroyNotify notify) |
| { |
| g_return_val_if_fail (channel != NULL, 0); |
| |
| return channel->funcs->io_add_watch (channel, priority, condition, |
| func, user_data, notify); |
| } |
| |
| guint |
| g_io_add_watch (GIOChannel *channel, |
| GIOCondition condition, |
| GIOFunc func, |
| gpointer user_data) |
| { |
| return g_io_add_watch_full (channel, 0, condition, func, user_data, NULL); |
| } |