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/*
* Copyright (C) 2011 Igalia S.L.
*
* Contact: Iago Toral Quiroga <itoral@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; version 2.1 of
* the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include "grl-operation.h"
#include "grl-operation-priv.h"
#include "grl-log.h"
typedef struct
{
GrlOperationCancelCb cancel_cb;
GDestroyNotify destroy_cb;
gpointer private_data;
gpointer user_data;
GDestroyNotify user_data_destroy_func;
} OperationData;
static guint operations_id;
static GHashTable *operations;
static void
operation_data_free (OperationData *data)
{
if (data->user_data_destroy_func && data->user_data) {
data->user_data_destroy_func (data->user_data);
data->user_data = NULL;
}
if (data->destroy_cb) {
data->destroy_cb (data->private_data);
}
g_slice_free (OperationData, data);
}
void
grl_operation_init (void)
{
static gboolean initialized = FALSE;
if (G_LIKELY (initialized))
return;
initialized = TRUE;
operations = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL,
(GDestroyNotify) operation_data_free);
operations_id = 1;
}
guint
grl_operation_generate_id (void)
{
guint operation_id = operations_id++;
OperationData *data = g_slice_new0 (OperationData);
g_hash_table_insert (operations, GUINT_TO_POINTER (operation_id), data);
return operation_id;
}
void
grl_operation_set_private_data (guint operation_id,
gpointer private_data,
GrlOperationCancelCb cancel_cb,
GDestroyNotify destroy_cb)
{
OperationData *data = g_hash_table_lookup (operations,
GUINT_TO_POINTER (operation_id));
g_return_if_fail (data != NULL);
data->cancel_cb = cancel_cb;
data->destroy_cb = destroy_cb;
data->private_data = private_data;
}
/**
* grl_operation_get_private_data: (skip)
* @operation_id: operation identifier
*/
gpointer
grl_operation_get_private_data (guint operation_id)
{
OperationData *data = g_hash_table_lookup (operations,
GUINT_TO_POINTER (operation_id));
g_return_val_if_fail (data != NULL, NULL);
return data->private_data;
}
void
grl_operation_remove (guint operation_id)
{
g_hash_table_remove (operations, GUINT_TO_POINTER (operation_id));
}
/*** PUBLIC API ***/
/**
* grl_operation_cancel:
* @operation_id: the identifier of a running operation
*
* Cancel an operation.
*/
void
grl_operation_cancel (guint operation_id)
{
OperationData *data = g_hash_table_lookup (operations,
GUINT_TO_POINTER (operation_id));
if (!data) {
GRL_WARNING ("Invalid operation %u", operation_id);
return;
}
g_return_if_fail (data != NULL);
if (data->cancel_cb) {
data->cancel_cb (data->private_data);
}
}
/**
* grl_operation_get_data:
* @operation_id: the identifier of a running operation
*
* Obtains the previously attached data
*
* Returns: (transfer none): The previously attached data.
*/
gpointer
grl_operation_get_data (guint operation_id)
{
OperationData *data = g_hash_table_lookup (operations,
GUINT_TO_POINTER (operation_id));
if (!data) {
GRL_WARNING ("Invalid operation %u", operation_id);
return NULL;
}
return data->user_data;
}
/**
* grl_operation_set_data:
* @operation_id: the identifier of a running operation
* @user_data: the data to attach
*
* Attach a pointer to the specific operation.
*/
void
grl_operation_set_data (guint operation_id, gpointer user_data)
{
grl_operation_set_data_full (operation_id, user_data, NULL);
}
/**
* grl_operation_set_data_full:
* @operation_id: the identifier of a running operation
* @user_data: (allow-none): the data to attach
* @destroy_func: (allow-none): function to release @user_data when the operation terminates
*
* Attach a pointer to the specific operation.
*
* Note that the @destroy_func callback is not called if @user_data is %NULL.
*
* Since: 0.2.7
*/
void
grl_operation_set_data_full (guint operation_id, gpointer user_data, GDestroyNotify destroy_func)
{
OperationData *data = g_hash_table_lookup (operations,
GUINT_TO_POINTER (operation_id));
if (!data) {
GRL_WARNING ("Invalid operation %u", operation_id);
} else {
if (data->user_data_destroy_func && data->user_data)
data->user_data_destroy_func (data->user_data);
data->user_data = user_data;
data->user_data_destroy_func = destroy_func;
}
}
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