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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2007 Novell, Inc.
* Copyright (C) 2010 Red Hat, Inc.
*/
#include "nm-call-store.h"
#include "nm-logging.h"
NMCallStore *
nm_call_store_new (void)
{
return g_hash_table_new_full (NULL, NULL, NULL,
(GDestroyNotify) g_hash_table_destroy);
}
static void
object_destroyed_cb (gpointer data, GObject *object)
{
g_hash_table_remove ((NMCallStore *) data, object);
}
void
nm_call_store_add (NMCallStore *store,
GObject *object,
gpointer *call_id)
{
GHashTable *call_ids_hash;
g_return_if_fail (store != NULL);
g_return_if_fail (object != NULL);
g_return_if_fail (call_id != NULL);
call_ids_hash = g_hash_table_lookup (store, object);
if (!call_ids_hash) {
call_ids_hash = g_hash_table_new (NULL, NULL);
g_hash_table_insert (store, object, call_ids_hash);
g_object_weak_ref (object, object_destroyed_cb, store);
}
g_hash_table_insert (call_ids_hash, call_id, NULL);
}
void
nm_call_store_remove (NMCallStore *store,
GObject *object,
gpointer call_id)
{
GHashTable *call_ids_hash;
g_return_if_fail (store != NULL);
g_return_if_fail (object != NULL);
g_return_if_fail (call_id != NULL);
call_ids_hash = g_hash_table_lookup (store, object);
if (!call_ids_hash) {
nm_log_warn (LOGD_CORE, "Trying to remove a non-existant call id.");
return;
}
if (!g_hash_table_remove (call_ids_hash, call_id))
nm_log_warn (LOGD_CORE, "Trying to remove a non-existant call id.");
if (g_hash_table_size (call_ids_hash) == 0) {
g_hash_table_remove (store, object);
g_object_weak_unref (object, object_destroyed_cb, store);
}
}
typedef struct {
GObject *object;
gint count;
NMCallStoreFunc callback;
gpointer user_data;
} StoreForeachInfo;
static void
call_callback (gpointer call_id, gpointer user_data)
{
StoreForeachInfo *info = (StoreForeachInfo *) user_data;
if (info->count >= 0) {
if (info->callback (info->object, call_id, info->user_data))
info->count++;
else
info->count = -1;
}
}
static void
prepend_id (gpointer key, gpointer value, gpointer user_data)
{
GSList **list = (GSList **) user_data;
*list = g_slist_prepend (*list, key);
}
static GSList *
get_call_ids (GHashTable *hash)
{
GSList *ids = NULL;
g_hash_table_foreach (hash, prepend_id, &ids);
return ids;
}
static void
call_all_callbacks (gpointer key, gpointer value, gpointer user_data)
{
StoreForeachInfo *info = (StoreForeachInfo *) user_data;
GSList *ids;
info->object = G_OBJECT (key);
/* Create a copy of the hash keys (call_ids) so that the callback is
free to modify the store */
ids = get_call_ids ((GHashTable *) value);
g_slist_foreach (ids, call_callback, info);
g_slist_free (ids);
}
static void
duplicate_hash (gpointer key, gpointer value, gpointer user_data)
{
g_hash_table_insert ((GHashTable *) user_data, key, value);
}
int
nm_call_store_foreach (NMCallStore *store,
GObject *object,
NMCallStoreFunc callback,
gpointer user_data)
{
StoreForeachInfo info;
g_return_val_if_fail (store != NULL, -1);
g_return_val_if_fail (callback != NULL, -1);
info.object = object;
info.count = 0;
info.callback = callback;
info.user_data = user_data;
if (object) {
GHashTable *call_ids_hash;
GSList *ids;
call_ids_hash = g_hash_table_lookup (store, object);
if (!call_ids_hash) {
nm_log_warn (LOGD_CORE, "Object not in store");
return -1;
}
/* Create a copy of the hash keys (call_ids) so that the callback is
free to modify the store */
ids = get_call_ids (call_ids_hash);
g_slist_foreach (ids, call_callback, &info);
g_slist_free (ids);
} else {
GHashTable *copy;
/* Create a copy of the main store so that callbacks can modify it */
copy = g_hash_table_new (NULL, NULL);
g_hash_table_foreach (store, duplicate_hash, copy);
g_hash_table_foreach (copy, call_all_callbacks, &info);
g_hash_table_destroy (copy);
}
return info.count;
}
static void
remove_weakref (gpointer key, gpointer value, gpointer user_data)
{
g_object_weak_unref (G_OBJECT (key), object_destroyed_cb, user_data);
}
void
nm_call_store_clear (NMCallStore *store)
{
g_return_if_fail (store);
g_hash_table_foreach (store, remove_weakref, store);
g_hash_table_remove_all (store);
}
void
nm_call_store_destroy (NMCallStore *store)
{
g_return_if_fail (store);
g_hash_table_destroy (store);
}
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