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4f1f68e6be
This can be used to query whether the task has completed, in the sense that it has had a result set on it, and has already – or will soon – invoke its callback function. Notifications for this property are emitted immediately after the task’s main callback, in the same main context as that callback. This allows for multiple bits of code to listen for completion of the GTask, which opens the door for blocking on cancellation of the GTask and improved handling of ‘pending’ behaviour. https://bugzilla.gnome.org/show_bug.cgi?id=743636
161 lines
7.4 KiB
C
161 lines
7.4 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright 2011 Red Hat, Inc.
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __G_TASK_H__
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#define __G_TASK_H__
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#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
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#error "Only <gio/gio.h> can be included directly."
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#endif
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#include <gio/giotypes.h>
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G_BEGIN_DECLS
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#define G_TYPE_TASK (g_task_get_type ())
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#define G_TASK(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_TASK, GTask))
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#define G_TASK_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_TASK, GTaskClass))
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#define G_IS_TASK(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_TASK))
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#define G_IS_TASK_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_TASK))
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#define G_TASK_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_TASK, GTaskClass))
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typedef struct _GTaskClass GTaskClass;
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GLIB_AVAILABLE_IN_2_36
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GType g_task_get_type (void) G_GNUC_CONST;
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GLIB_AVAILABLE_IN_2_36
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GTask *g_task_new (gpointer source_object,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer callback_data);
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GLIB_AVAILABLE_IN_2_36
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void g_task_report_error (gpointer source_object,
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GAsyncReadyCallback callback,
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gpointer callback_data,
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gpointer source_tag,
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GError *error);
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GLIB_AVAILABLE_IN_2_36
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void g_task_report_new_error (gpointer source_object,
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GAsyncReadyCallback callback,
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gpointer callback_data,
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gpointer source_tag,
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GQuark domain,
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gint code,
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const char *format,
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...) G_GNUC_PRINTF(7, 8);
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GLIB_AVAILABLE_IN_2_36
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void g_task_set_task_data (GTask *task,
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gpointer task_data,
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GDestroyNotify task_data_destroy);
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GLIB_AVAILABLE_IN_2_36
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void g_task_set_priority (GTask *task,
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gint priority);
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GLIB_AVAILABLE_IN_2_36
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void g_task_set_check_cancellable (GTask *task,
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gboolean check_cancellable);
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GLIB_AVAILABLE_IN_2_36
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void g_task_set_source_tag (GTask *task,
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gpointer source_tag);
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GLIB_AVAILABLE_IN_2_36
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gpointer g_task_get_source_object (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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gpointer g_task_get_task_data (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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gint g_task_get_priority (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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GMainContext *g_task_get_context (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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GCancellable *g_task_get_cancellable (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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gboolean g_task_get_check_cancellable (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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gpointer g_task_get_source_tag (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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gboolean g_task_is_valid (gpointer result,
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gpointer source_object);
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typedef void (*GTaskThreadFunc) (GTask *task,
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gpointer source_object,
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gpointer task_data,
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GCancellable *cancellable);
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GLIB_AVAILABLE_IN_2_36
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void g_task_run_in_thread (GTask *task,
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GTaskThreadFunc task_func);
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GLIB_AVAILABLE_IN_2_36
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void g_task_run_in_thread_sync (GTask *task,
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GTaskThreadFunc task_func);
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GLIB_AVAILABLE_IN_2_36
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gboolean g_task_set_return_on_cancel (GTask *task,
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gboolean return_on_cancel);
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GLIB_AVAILABLE_IN_2_36
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gboolean g_task_get_return_on_cancel (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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void g_task_attach_source (GTask *task,
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GSource *source,
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GSourceFunc callback);
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GLIB_AVAILABLE_IN_2_36
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void g_task_return_pointer (GTask *task,
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gpointer result,
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GDestroyNotify result_destroy);
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GLIB_AVAILABLE_IN_2_36
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void g_task_return_boolean (GTask *task,
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gboolean result);
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GLIB_AVAILABLE_IN_2_36
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void g_task_return_int (GTask *task,
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gssize result);
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GLIB_AVAILABLE_IN_2_36
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void g_task_return_error (GTask *task,
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GError *error);
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GLIB_AVAILABLE_IN_2_36
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void g_task_return_new_error (GTask *task,
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GQuark domain,
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gint code,
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const char *format,
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...) G_GNUC_PRINTF (4, 5);
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GLIB_AVAILABLE_IN_2_36
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gboolean g_task_return_error_if_cancelled (GTask *task);
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GLIB_AVAILABLE_IN_2_36
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gpointer g_task_propagate_pointer (GTask *task,
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GError **error);
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GLIB_AVAILABLE_IN_2_36
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gboolean g_task_propagate_boolean (GTask *task,
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GError **error);
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GLIB_AVAILABLE_IN_2_36
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gssize g_task_propagate_int (GTask *task,
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GError **error);
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GLIB_AVAILABLE_IN_2_36
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gboolean g_task_had_error (GTask *task);
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GLIB_AVAILABLE_IN_2_44
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gboolean g_task_get_completed (GTask *task);
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G_END_DECLS
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#endif /* __G_TASK_H__ */
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