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"
30 * SECTION:gasynchelper
31 * @short_description: Asynchronous Helper Functions
33 * @see_also: #GAsyncReady
35 * Provides helper functions for asynchronous operations.
40 async_result_free (gpointer data)
42 GAsyncResultData *res = data;
45 g_error_free (res->error);
47 g_object_unref (res->async_object);
53 _g_queue_async_result (GAsyncResultData *result,
54 gpointer async_object,
57 GSourceFunc source_func)
61 g_return_if_fail (G_IS_OBJECT (async_object));
63 result->async_object = g_object_ref (async_object);
64 result->user_data = user_data;
65 result->error = error;
67 source = g_idle_source_new ();
68 g_source_set_priority (source, G_PRIORITY_DEFAULT);
69 g_source_set_callback (source, source_func, result, async_result_free);
70 g_source_attach (source, NULL);
71 g_source_unref (source);
74 /*************************************************************************
76 ************************************************************************/
82 GCancellable *cancellable;
88 fd_source_prepare (GSource *source,
91 FDSource *fd_source = (FDSource *)source;
94 return g_cancellable_is_cancelled (fd_source->cancellable);
98 fd_source_check (GSource *source)
100 FDSource *fd_source = (FDSource *)source;
103 g_cancellable_is_cancelled (fd_source->cancellable) ||
104 fd_source->pollfd.revents != 0;
108 fd_source_dispatch (GSource *source,
109 GSourceFunc callback,
113 GFDSourceFunc func = (GFDSourceFunc)callback;
114 GFDSourceObjectFunc func2 = (GFDSourceObjectFunc)callback;
115 FDSource *fd_source = (FDSource *)source;
117 g_warn_if_fail (func != NULL);
119 if (fd_source->object)
120 return (*func2) (fd_source->object, fd_source->pollfd.revents, user_data);
122 return (*func) (user_data, fd_source->pollfd.revents, fd_source->pollfd.fd);
126 fd_source_finalize (GSource *source)
128 FDSource *fd_source = (FDSource *)source;
130 if (fd_source->cancelled_tag)
131 g_cancellable_disconnect (fd_source->cancellable,
132 fd_source->cancelled_tag);
134 if (fd_source->cancellable)
135 g_object_unref (fd_source->cancellable);
137 if (fd_source->object)
138 g_object_unref (fd_source->object);
141 static GSourceFuncs fd_source_funcs = {
148 /* Might be called on another thread */
150 fd_source_cancelled_cb (GCancellable *cancellable,
153 /* Wake up the mainloop in case we're waiting on async calls with FDSource */
154 g_main_context_wakeup (NULL);
158 _g_fd_source_new_with_object (GObject *object,
161 GCancellable *cancellable)
166 source = g_source_new (&fd_source_funcs, sizeof (FDSource));
167 fd_source = (FDSource *)source;
170 fd_source->cancellable = g_object_ref (cancellable);
173 fd_source->object = g_object_ref (object);
175 fd_source->pollfd.fd = fd;
176 fd_source->pollfd.events = events;
177 g_source_add_poll (source, &fd_source->pollfd);
180 fd_source->cancelled_tag =
181 g_cancellable_connect (cancellable,
182 (GCallback)fd_source_cancelled_cb,
189 _g_fd_source_new (int fd,
191 GCancellable *cancellable)
193 return _g_fd_source_new_with_object (NULL, fd, events, cancellable);