1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Author: Alexander Larsson <alexl@redhat.com>
25 #include "gasynchelper.h"
28 * SECTION:gasynchelper
29 * @short_description: Asynchronous Helper Functions
31 * @see_also: #GAsyncReady
33 * Provides helper functions for asynchronous operations.
38 async_result_free (gpointer data)
40 GAsyncResultData *res = data;
43 g_error_free (res->error);
45 g_object_unref (res->async_object);
51 _g_queue_async_result (GAsyncResultData *result,
52 gpointer async_object,
55 GSourceFunc source_func)
59 g_return_if_fail (G_IS_OBJECT (async_object));
61 result->async_object = g_object_ref (async_object);
62 result->user_data = user_data;
63 result->error = error;
65 source = g_idle_source_new ();
66 g_source_set_priority (source, G_PRIORITY_DEFAULT);
67 g_source_set_callback (source, source_func, result, async_result_free);
68 g_source_attach (source, NULL);
69 g_source_unref (source);
72 /*************************************************************************
74 ************************************************************************/
80 GCancellable *cancellable;
85 fd_source_prepare (GSource *source,
88 FDSource *fd_source = (FDSource *)source;
91 return g_cancellable_is_cancelled (fd_source->cancellable);
95 fd_source_check (GSource *source)
97 FDSource *fd_source = (FDSource *)source;
100 g_cancellable_is_cancelled (fd_source->cancellable) ||
101 fd_source->pollfd.revents != 0;
105 fd_source_dispatch (GSource *source,
106 GSourceFunc callback,
110 GFDSourceFunc func = (GFDSourceFunc)callback;
111 FDSource *fd_source = (FDSource *)source;
113 g_warn_if_fail (func != NULL);
115 return (*func) (user_data, fd_source->pollfd.revents, fd_source->pollfd.fd);
119 fd_source_finalize (GSource *source)
121 FDSource *fd_source = (FDSource *)source;
123 if (fd_source->cancelled_tag)
124 g_signal_handler_disconnect (fd_source->cancellable,
125 fd_source->cancelled_tag);
127 if (fd_source->cancellable)
128 g_object_unref (fd_source->cancellable);
131 static GSourceFuncs fd_source_funcs = {
138 /* Might be called on another thread */
140 fd_source_cancelled_cb (GCancellable *cancellable,
143 /* Wake up the mainloop in case we're waiting on async calls with FDSource */
144 g_main_context_wakeup (NULL);
148 _g_fd_source_new (int fd,
150 GCancellable *cancellable)
155 source = g_source_new (&fd_source_funcs, sizeof (FDSource));
156 fd_source = (FDSource *)source;
159 fd_source->cancellable = g_object_ref (cancellable);
161 fd_source->pollfd.fd = fd;
162 fd_source->pollfd.events = events;
163 g_source_add_poll (source, &fd_source->pollfd);
166 fd_source->cancelled_tag =
167 g_signal_connect_data (cancellable, "cancelled",
168 (GCallback)fd_source_cancelled_cb,