| /* |
| * |
| * Wireless daemon for Linux |
| * |
| * Copyright (C) 2016-2019 Intel Corporation. All rights reserved. |
| * |
| * 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; either |
| * 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 |
| * |
| */ |
| |
| typedef void (*watchlist_item_destroy_func_t)(void *data); |
| |
| struct watchlist_item { |
| unsigned int id; |
| void *notify; |
| void *notify_data; |
| watchlist_item_destroy_func_t destroy; |
| }; |
| |
| struct watchlist_ops { |
| void (*item_free)(struct watchlist_item *item); |
| }; |
| |
| struct watchlist { |
| int next_id; |
| struct l_queue *items; |
| bool in_notify : 1; |
| bool stale_items : 1; |
| bool pending_destroy : 1; |
| const struct watchlist_ops *ops; |
| }; |
| |
| struct watchlist *watchlist_new(const struct watchlist_ops *ops); |
| void watchlist_init(struct watchlist *watchlist, |
| const struct watchlist_ops *ops); |
| unsigned int watchlist_add(struct watchlist *watchlist, void *notify, |
| void *notify_data, |
| watchlist_item_destroy_func_t destroy); |
| unsigned int watchlist_link(struct watchlist *watchlist, |
| struct watchlist_item *item, |
| void *notify, void *notify_data, |
| watchlist_item_destroy_func_t destroy); |
| bool watchlist_remove(struct watchlist *watchlist, unsigned int id); |
| void watchlist_destroy(struct watchlist *watchlist); |
| void watchlist_free(struct watchlist *watchlist); |
| |
| void __watchlist_prune_stale(struct watchlist *watchlist); |
| |
| #define WATCHLIST_NOTIFY(list, type, args...) \ |
| do { \ |
| struct watchlist *watchlist = (list); \ |
| const struct l_queue_entry *entry = \ |
| l_queue_get_entries(watchlist->items); \ |
| \ |
| watchlist->in_notify = true; \ |
| for (; entry; entry = entry->next) { \ |
| struct watchlist_item *item = entry->data; \ |
| type t = item->notify; \ |
| if (item->id == 0) \ |
| continue; \ |
| t(args, item->notify_data); \ |
| if (watchlist->pending_destroy) \ |
| break; \ |
| } \ |
| watchlist->in_notify = false; \ |
| if (watchlist->pending_destroy) \ |
| watchlist_destroy(watchlist); \ |
| else if (watchlist->stale_items) \ |
| __watchlist_prune_stale(watchlist); \ |
| } while (false) \ |
| |
| #define WATCHLIST_NOTIFY_MATCHES(list, match, match_data, type, args...) \ |
| do { \ |
| struct watchlist *watchlist = (list); \ |
| const struct l_queue_entry *entry = \ |
| l_queue_get_entries(watchlist->items); \ |
| \ |
| watchlist->in_notify = true; \ |
| for (; entry; entry = entry->next) { \ |
| struct watchlist_item *item = entry->data; \ |
| type t = item->notify; \ |
| \ |
| if (item->id == 0) \ |
| continue; \ |
| if (!match(item, match_data)) \ |
| continue; \ |
| \ |
| t(args, item->notify_data); \ |
| \ |
| if (watchlist->pending_destroy) \ |
| break; \ |
| } \ |
| watchlist->in_notify = false; \ |
| if (watchlist->pending_destroy) \ |
| watchlist_destroy(watchlist); \ |
| else if (watchlist->stale_items) \ |
| __watchlist_prune_stale(watchlist); \ |
| } while (false) |
| |
| #define WATCHLIST_NOTIFY_NO_ARGS(list, type) \ |
| do { \ |
| struct watchlist *watchlist = (list); \ |
| const struct l_queue_entry *entry = \ |
| l_queue_get_entries(watchlist->items); \ |
| \ |
| watchlist->in_notify = true; \ |
| for (; entry; entry = entry->next) { \ |
| struct watchlist_item *item = entry->data; \ |
| type t = item->notify; \ |
| if (item->id == 0) \ |
| continue; \ |
| t(item->notify_data); \ |
| if (watchlist->pending_destroy) \ |
| break; \ |
| } \ |
| watchlist->in_notify = false; \ |
| if (watchlist->pending_destroy) \ |
| watchlist_destroy(watchlist); \ |
| else if (watchlist->stale_items) \ |
| __watchlist_prune_stale(watchlist); \ |
| } while (false) |