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Tue Dec 15 17:17:46 1998 Owen Taylor <otaylor@redhat.com> * glib.h giounix.c giochannel.c: Use an "inheritance" scheme for IO channel memory allocation.h
118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* giochannel.c: IO Channel abstraction
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* Copyright 1998 Owen Taylor
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* MT safe
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*/
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#include "glib.h"
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#include <unistd.h>
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void
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g_io_channel_init (GIOChannel *channel)
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{
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channel->channel_flags = 0;
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channel->ref_count = 1;
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}
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void
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g_io_channel_ref (GIOChannel *channel)
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{
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g_return_if_fail (channel != NULL);
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channel->ref_count++;
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}
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void
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g_io_channel_unref (GIOChannel *channel)
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{
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g_return_if_fail (channel != NULL);
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channel->ref_count--;
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if (channel->ref_count == 0)
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channel->funcs->io_free (channel);
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}
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GIOError
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g_io_channel_read (GIOChannel *channel,
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gchar *buf,
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guint count,
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guint *bytes_read)
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{
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g_return_val_if_fail (channel != NULL, G_IO_ERROR_UNKNOWN);
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return channel->funcs->io_read (channel, buf, count, bytes_read);
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}
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GIOError
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g_io_channel_write (GIOChannel *channel,
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gchar *buf,
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guint count,
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guint *bytes_written)
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{
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g_return_val_if_fail (channel != NULL, G_IO_ERROR_UNKNOWN);
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return channel->funcs->io_write (channel, buf, count, bytes_written);
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}
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GIOError
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g_io_channel_seek (GIOChannel *channel,
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gint offset,
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GSeekType type)
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{
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g_return_val_if_fail (channel != NULL, G_IO_ERROR_UNKNOWN);
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return channel->funcs->io_seek (channel, offset, type);
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}
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void
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g_io_channel_close (GIOChannel *channel)
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{
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g_return_if_fail (channel != NULL);
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channel->funcs->io_close (channel);
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}
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guint
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g_io_add_watch_full (GIOChannel *channel,
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gint priority,
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GIOCondition condition,
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GIOFunc func,
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gpointer user_data,
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GDestroyNotify notify)
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{
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g_return_val_if_fail (channel != NULL, 0);
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return channel->funcs->io_add_watch (channel, priority, condition,
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func, user_data, notify);
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}
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guint
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g_io_add_watch (GIOChannel *channel,
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GIOCondition condition,
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GIOFunc func,
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gpointer user_data)
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{
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return g_io_add_watch_full (channel, 0, condition, func, user_data, NULL);
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}
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