PIKApp/app/core/pikaasyncset.c

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2023-09-26 00:35:21 +02:00
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* pikaasyncset.c
* Copyright (C) 2018 Ell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libpikabase/pikabase.h"
#include "core-types.h"
#include "pikaasync.h"
#include "pikaasyncset.h"
#include "pikacancelable.h"
#include "pikawaitable.h"
enum
{
PROP_0,
PROP_EMPTY
};
struct _PikaAsyncSetPrivate
{
GHashTable *asyncs;
};
/* local function prototypes */
static void pika_async_set_waitable_iface_init (PikaWaitableInterface *iface);
static void pika_async_set_cancelable_iface_init (PikaCancelableInterface *iface);
static void pika_async_set_dispose (GObject *object);
static void pika_async_set_finalize (GObject *object);
static void pika_async_set_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_async_set_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void pika_async_set_wait (PikaWaitable *waitable);
static gboolean pika_async_set_try_wait (PikaWaitable *waitable);
static gboolean pika_async_set_wait_until (PikaWaitable *waitable,
gint64 end_time);
static void pika_async_set_cancel (PikaCancelable *cancelable);
static void pika_async_set_async_callback (PikaAsync *async,
PikaAsyncSet *async_set);
G_DEFINE_TYPE_WITH_CODE (PikaAsyncSet, pika_async_set, G_TYPE_OBJECT,
G_ADD_PRIVATE (PikaAsyncSet)
G_IMPLEMENT_INTERFACE (PIKA_TYPE_WAITABLE,
pika_async_set_waitable_iface_init)
G_IMPLEMENT_INTERFACE (PIKA_TYPE_CANCELABLE,
pika_async_set_cancelable_iface_init))
#define parent_class pika_async_set_parent_class
/* private functions */
static void
pika_async_set_class_init (PikaAsyncSetClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = pika_async_set_dispose;
object_class->finalize = pika_async_set_finalize;
object_class->set_property = pika_async_set_set_property;
object_class->get_property = pika_async_set_get_property;
g_object_class_install_property (object_class, PROP_EMPTY,
g_param_spec_boolean ("empty",
NULL, NULL,
FALSE,
PIKA_PARAM_READABLE));
}
static void
pika_async_set_waitable_iface_init (PikaWaitableInterface *iface)
{
iface->wait = pika_async_set_wait;
iface->try_wait = pika_async_set_try_wait;
iface->wait_until = pika_async_set_wait_until;
}
static void
pika_async_set_cancelable_iface_init (PikaCancelableInterface *iface)
{
iface->cancel = pika_async_set_cancel;
}
static void
pika_async_set_init (PikaAsyncSet *async_set)
{
async_set->priv = pika_async_set_get_instance_private (async_set);
async_set->priv->asyncs = g_hash_table_new (NULL, NULL);
}
static void
pika_async_set_dispose (GObject *object)
{
PikaAsyncSet *async_set = PIKA_ASYNC_SET (object);
pika_async_set_clear (async_set);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
pika_async_set_finalize (GObject *object)
{
PikaAsyncSet *async_set = PIKA_ASYNC_SET (object);
g_hash_table_unref (async_set->priv->asyncs);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
pika_async_set_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_async_set_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaAsyncSet *async_set = PIKA_ASYNC_SET (object);
switch (property_id)
{
case PROP_EMPTY:
g_value_set_boolean (value, pika_async_set_is_empty (async_set));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_async_set_wait (PikaWaitable *waitable)
{
PikaAsyncSet *async_set = PIKA_ASYNC_SET (waitable);
while (! pika_async_set_is_empty (async_set))
{
PikaAsync *async;
GHashTableIter iter;
g_hash_table_iter_init (&iter, async_set->priv->asyncs);
g_hash_table_iter_next (&iter, (gpointer *) &async, NULL);
pika_waitable_wait (PIKA_WAITABLE (async));
}
}
static gboolean
pika_async_set_try_wait (PikaWaitable *waitable)
{
PikaAsyncSet *async_set = PIKA_ASYNC_SET (waitable);
while (! pika_async_set_is_empty (async_set))
{
PikaAsync *async;
GHashTableIter iter;
g_hash_table_iter_init (&iter, async_set->priv->asyncs);
g_hash_table_iter_next (&iter, (gpointer *) &async, NULL);
if (! pika_waitable_try_wait (PIKA_WAITABLE (async)))
return FALSE;
}
return TRUE;
}
static gboolean
pika_async_set_wait_until (PikaWaitable *waitable,
gint64 end_time)
{
PikaAsyncSet *async_set = PIKA_ASYNC_SET (waitable);
while (! pika_async_set_is_empty (async_set))
{
PikaAsync *async;
GHashTableIter iter;
g_hash_table_iter_init (&iter, async_set->priv->asyncs);
g_hash_table_iter_next (&iter, (gpointer *) &async, NULL);
if (! pika_waitable_wait_until (PIKA_WAITABLE (async), end_time))
return FALSE;
}
return TRUE;
}
static void
pika_async_set_cancel (PikaCancelable *cancelable)
{
PikaAsyncSet *async_set = PIKA_ASYNC_SET (cancelable);
GList *list;
list = g_hash_table_get_keys (async_set->priv->asyncs);
g_list_foreach (list, (GFunc) g_object_ref, NULL);
g_list_foreach (list, (GFunc) pika_cancelable_cancel, NULL);
g_list_free_full (list, g_object_unref);
}
static void
pika_async_set_async_callback (PikaAsync *async,
PikaAsyncSet *async_set)
{
g_hash_table_remove (async_set->priv->asyncs, async);
if (pika_async_set_is_empty (async_set))
g_object_notify (G_OBJECT (async_set), "empty");
}
/* public functions */
PikaAsyncSet *
pika_async_set_new (void)
{
return g_object_new (PIKA_TYPE_ASYNC_SET,
NULL);
}
void
pika_async_set_add (PikaAsyncSet *async_set,
PikaAsync *async)
{
g_return_if_fail (PIKA_IS_ASYNC_SET (async_set));
g_return_if_fail (PIKA_IS_ASYNC (async));
if (g_hash_table_add (async_set->priv->asyncs, async))
{
if (g_hash_table_size (async_set->priv->asyncs) == 1)
g_object_notify (G_OBJECT (async_set), "empty");
pika_async_add_callback (
async,
(PikaAsyncCallback) pika_async_set_async_callback,
async_set);
}
}
void
pika_async_set_remove (PikaAsyncSet *async_set,
PikaAsync *async)
{
g_return_if_fail (PIKA_IS_ASYNC_SET (async_set));
g_return_if_fail (PIKA_IS_ASYNC (async));
if (g_hash_table_remove (async_set->priv->asyncs, async))
{
pika_async_remove_callback (
async,
(PikaAsyncCallback) pika_async_set_async_callback,
async_set);
if (g_hash_table_size (async_set->priv->asyncs) == 0)
g_object_notify (G_OBJECT (async_set), "empty");
}
}
void
pika_async_set_clear (PikaAsyncSet *async_set)
{
PikaAsync *async;
GHashTableIter iter;
g_return_if_fail (PIKA_IS_ASYNC_SET (async_set));
if (pika_async_set_is_empty (async_set))
return;
g_hash_table_iter_init (&iter, async_set->priv->asyncs);
while (g_hash_table_iter_next (&iter, (gpointer *) &async, NULL))
{
pika_async_remove_callback (
async,
(PikaAsyncCallback) pika_async_set_async_callback,
async_set);
}
g_hash_table_remove_all (async_set->priv->asyncs);
g_object_notify (G_OBJECT (async_set), "empty");
}
gboolean
pika_async_set_is_empty (PikaAsyncSet *async_set)
{
g_return_val_if_fail (PIKA_IS_ASYNC_SET (async_set), FALSE);
return g_hash_table_size (async_set->priv->asyncs) == 0;
}