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
30 * @see_also: #GAsyncReady
32 * Provides helper functions for asynchronous operations.
37 async_result_free (gpointer data)
39 GAsyncResultData *res = data;
42 g_error_free (res->error);
44 g_object_unref (res->async_object);
50 _g_queue_async_result (GAsyncResultData *result,
51 gpointer async_object,
54 GSourceFunc source_func)
58 g_return_if_fail (G_IS_OBJECT (async_object));
60 result->async_object = g_object_ref (async_object);
61 result->user_data = user_data;
62 result->error = error;
64 source = g_idle_source_new ();
65 g_source_set_priority (source, G_PRIORITY_DEFAULT);
66 g_source_set_callback (source, source_func, result, async_result_free);
67 g_source_attach (source, NULL);
68 g_source_unref (source);
71 /*************************************************************************
73 ************************************************************************/
79 GCancellable *cancellable;
84 fd_source_prepare (GSource *source,
87 FDSource *fd_source = (FDSource *)source;
90 return g_cancellable_is_cancelled (fd_source->cancellable);
94 fd_source_check (GSource *source)
96 FDSource *fd_source = (FDSource *)source;
99 g_cancellable_is_cancelled (fd_source->cancellable) ||
100 fd_source->pollfd.revents != 0;
104 fd_source_dispatch (GSource *source,
105 GSourceFunc callback,
109 GFDSourceFunc func = (GFDSourceFunc)callback;
110 FDSource *fd_source = (FDSource *)source;
112 g_assert (func != NULL);
114 return (*func) (user_data, fd_source->pollfd.revents, fd_source->pollfd.fd);
118 fd_source_finalize (GSource *source)
120 FDSource *fd_source = (FDSource *)source;
122 if (fd_source->cancelled_tag)
123 g_signal_handler_disconnect (fd_source->cancellable,
124 fd_source->cancelled_tag);
126 if (fd_source->cancellable)
127 g_object_unref (fd_source->cancellable);
130 static GSourceFuncs fd_source_funcs = {
137 /* Might be called on another thread */
139 fd_source_cancelled_cb (GCancellable *cancellable,
142 /* Wake up the mainloop in case we're waiting on async calls with FDSource */
143 g_main_context_wakeup (NULL);
147 _g_fd_source_new (int fd,
149 GCancellable *cancellable)
154 source = g_source_new (&fd_source_funcs, sizeof (FDSource));
155 fd_source = (FDSource *)source;
158 fd_source->cancellable = g_object_ref (cancellable);
160 fd_source->pollfd.fd = fd;
161 fd_source->pollfd.events = events;
162 g_source_add_poll (source, &fd_source->pollfd);
165 fd_source->cancelled_tag =
166 g_signal_connect_data (cancellable, "cancelled",
167 (GCallback)fd_source_cancelled_cb,