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1 office 1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright 2011 Red Hat, Inc.
4 *
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.
9 *
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.
14 *
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
17 */
18  
19 #ifndef __G_TASK_H__
20 #define __G_TASK_H__
21  
22 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
23 #error "Only <gio/gio.h> can be included directly."
24 #endif
25  
26 #include <gio/giotypes.h>
27  
28 G_BEGIN_DECLS
29  
30 #define G_TYPE_TASK (g_task_get_type ())
31 #define G_TASK(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_TASK, GTask))
32 #define G_TASK_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_TASK, GTaskClass))
33 #define G_IS_TASK(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_TASK))
34 #define G_IS_TASK_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_TASK))
35 #define G_TASK_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_TASK, GTaskClass))
36  
37 typedef struct _GTaskClass GTaskClass;
38  
39 GLIB_AVAILABLE_IN_2_36
40 GType g_task_get_type (void) G_GNUC_CONST;
41  
42 GLIB_AVAILABLE_IN_2_36
43 GTask *g_task_new (gpointer source_object,
44 GCancellable *cancellable,
45 GAsyncReadyCallback callback,
46 gpointer callback_data);
47  
48 GLIB_AVAILABLE_IN_2_36
49 void g_task_report_error (gpointer source_object,
50 GAsyncReadyCallback callback,
51 gpointer callback_data,
52 gpointer source_tag,
53 GError *error);
54 GLIB_AVAILABLE_IN_2_36
55 void g_task_report_new_error (gpointer source_object,
56 GAsyncReadyCallback callback,
57 gpointer callback_data,
58 gpointer source_tag,
59 GQuark domain,
60 gint code,
61 const char *format,
62 ...) G_GNUC_PRINTF(7, 8);
63  
64 GLIB_AVAILABLE_IN_2_36
65 void g_task_set_task_data (GTask *task,
66 gpointer task_data,
67 GDestroyNotify task_data_destroy);
68 GLIB_AVAILABLE_IN_2_36
69 void g_task_set_priority (GTask *task,
70 gint priority);
71 GLIB_AVAILABLE_IN_2_36
72 void g_task_set_check_cancellable (GTask *task,
73 gboolean check_cancellable);
74 GLIB_AVAILABLE_IN_2_36
75 void g_task_set_source_tag (GTask *task,
76 gpointer source_tag);
77  
78 GLIB_AVAILABLE_IN_2_36
79 gpointer g_task_get_source_object (GTask *task);
80 GLIB_AVAILABLE_IN_2_36
81 gpointer g_task_get_task_data (GTask *task);
82 GLIB_AVAILABLE_IN_2_36
83 gint g_task_get_priority (GTask *task);
84 GLIB_AVAILABLE_IN_2_36
85 GMainContext *g_task_get_context (GTask *task);
86 GLIB_AVAILABLE_IN_2_36
87 GCancellable *g_task_get_cancellable (GTask *task);
88 GLIB_AVAILABLE_IN_2_36
89 gboolean g_task_get_check_cancellable (GTask *task);
90 GLIB_AVAILABLE_IN_2_36
91 gpointer g_task_get_source_tag (GTask *task);
92  
93 GLIB_AVAILABLE_IN_2_36
94 gboolean g_task_is_valid (gpointer result,
95 gpointer source_object);
96  
97  
98 typedef void (*GTaskThreadFunc) (GTask *task,
99 gpointer source_object,
100 gpointer task_data,
101 GCancellable *cancellable);
102 GLIB_AVAILABLE_IN_2_36
103 void g_task_run_in_thread (GTask *task,
104 GTaskThreadFunc task_func);
105 GLIB_AVAILABLE_IN_2_36
106 void g_task_run_in_thread_sync (GTask *task,
107 GTaskThreadFunc task_func);
108 GLIB_AVAILABLE_IN_2_36
109 gboolean g_task_set_return_on_cancel (GTask *task,
110 gboolean return_on_cancel);
111 GLIB_AVAILABLE_IN_2_36
112 gboolean g_task_get_return_on_cancel (GTask *task);
113  
114 GLIB_AVAILABLE_IN_2_36
115 void g_task_attach_source (GTask *task,
116 GSource *source,
117 GSourceFunc callback);
118  
119  
120 GLIB_AVAILABLE_IN_2_36
121 void g_task_return_pointer (GTask *task,
122 gpointer result,
123 GDestroyNotify result_destroy);
124 GLIB_AVAILABLE_IN_2_36
125 void g_task_return_boolean (GTask *task,
126 gboolean result);
127 GLIB_AVAILABLE_IN_2_36
128 void g_task_return_int (GTask *task,
129 gssize result);
130  
131 GLIB_AVAILABLE_IN_2_36
132 void g_task_return_error (GTask *task,
133 GError *error);
134 GLIB_AVAILABLE_IN_2_36
135 void g_task_return_new_error (GTask *task,
136 GQuark domain,
137 gint code,
138 const char *format,
139 ...) G_GNUC_PRINTF (4, 5);
140  
141 GLIB_AVAILABLE_IN_2_36
142 gboolean g_task_return_error_if_cancelled (GTask *task);
143  
144 GLIB_AVAILABLE_IN_2_36
145 gpointer g_task_propagate_pointer (GTask *task,
146 GError **error);
147 GLIB_AVAILABLE_IN_2_36
148 gboolean g_task_propagate_boolean (GTask *task,
149 GError **error);
150 GLIB_AVAILABLE_IN_2_36
151 gssize g_task_propagate_int (GTask *task,
152 GError **error);
153 GLIB_AVAILABLE_IN_2_36
154 gboolean g_task_had_error (GTask *task);
155 GLIB_AVAILABLE_IN_2_44
156 gboolean g_task_get_completed (GTask *task);
157  
158 G_END_DECLS
159  
160 #endif /* __G_TASK_H__ */