watchlist: Support polymorphic watchlist_items
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4a9d8278b4
commit
2071fb7836
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@ -36,29 +36,49 @@ static bool watchlist_item_match(const void *a, const void *b)
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return item->id == id;
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}
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static void watchlist_item_free(void *data)
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static void __watchlist_item_free(struct watchlist *watchlist,
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struct watchlist_item *item)
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{
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struct watchlist_item *item = data;
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if (item->destroy)
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item->destroy(item->notify_data);
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if (watchlist->ops && watchlist->ops->item_free)
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watchlist->ops->item_free(item);
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else
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l_free(item);
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}
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struct watchlist *watchlist_new(void)
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struct watchlist *watchlist_new(const struct watchlist_ops *ops)
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{
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struct watchlist *watchlist;
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watchlist = l_new(struct watchlist, 1);
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watchlist->items = l_queue_new();
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watchlist->ops = ops;
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return watchlist;
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}
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void watchlist_init(struct watchlist *watchlist)
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void watchlist_init(struct watchlist *watchlist,
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const struct watchlist_ops *ops)
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{
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watchlist->next_id = 0;
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watchlist->items = l_queue_new();
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watchlist->ops = ops;
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}
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unsigned int watchlist_link(struct watchlist *watchlist,
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struct watchlist_item *item,
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void *notify, void *notify_data,
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watchlist_item_destroy_func_t destroy)
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{
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item->id = ++watchlist->next_id;
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item->notify = notify;
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item->notify_data = notify_data;
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item->destroy = destroy;
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l_queue_push_tail(watchlist->items, item);
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return item->id;
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}
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unsigned int watchlist_add(struct watchlist *watchlist, void *notify,
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@ -68,14 +88,7 @@ unsigned int watchlist_add(struct watchlist *watchlist, void *notify,
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struct watchlist_item *item;
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item = l_new(struct watchlist_item, 1);
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item->id = ++watchlist->next_id;
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item->notify = notify;
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item->notify_data = notify_data;
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item->destroy = destroy;
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l_queue_push_tail(watchlist->items, item);
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return item->id;
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return watchlist_link(watchlist, item, notify, notify_data, destroy);
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}
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bool watchlist_remove(struct watchlist *watchlist, unsigned int id)
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@ -99,22 +112,28 @@ bool watchlist_remove(struct watchlist *watchlist, unsigned int id)
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if (!item)
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return false;
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if (item->destroy)
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item->destroy(item->notify_data);
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__watchlist_item_free(watchlist, item);
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l_free(item);
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return true;
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}
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static void __watchlist_clear(struct watchlist *watchlist)
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{
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struct watchlist_item *item;
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while ((item = l_queue_pop_head(watchlist->items)))
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__watchlist_item_free(watchlist, item);
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}
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void watchlist_destroy(struct watchlist *watchlist)
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{
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l_queue_destroy(watchlist->items, watchlist_item_free);
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__watchlist_clear(watchlist);
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watchlist->items = NULL;
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}
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void watchlist_free(struct watchlist *watchlist)
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{
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l_queue_destroy(watchlist->items, watchlist_item_free);
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__watchlist_clear(watchlist);
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l_free(watchlist);
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}
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@ -123,12 +142,8 @@ void __watchlist_prune_stale(struct watchlist *watchlist)
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struct watchlist_item *item;
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while ((item = l_queue_remove_if(watchlist->items, watchlist_item_match,
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L_UINT_TO_PTR(0)))) {
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if (item->destroy)
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item->destroy(item->notify_data);
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l_free(item);
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}
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L_UINT_TO_PTR(0))))
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__watchlist_item_free(watchlist, item);
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watchlist->stale_items = false;
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}
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@ -29,18 +29,28 @@ struct watchlist_item {
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watchlist_item_destroy_func_t destroy;
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};
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struct watchlist_ops {
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void (*item_free)(struct watchlist_item *item);
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};
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struct watchlist {
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int next_id;
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struct l_queue *items;
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bool in_notify : 1;
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bool stale_items : 1;
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const struct watchlist_ops *ops;
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};
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struct watchlist *watchlist_new(void);
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void watchlist_init(struct watchlist *watchlist);
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struct watchlist *watchlist_new(const struct watchlist_ops *ops);
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void watchlist_init(struct watchlist *watchlist,
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const struct watchlist_ops *ops);
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unsigned int watchlist_add(struct watchlist *watchlist, void *notify,
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void *notify_data,
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watchlist_item_destroy_func_t destroy);
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unsigned int watchlist_link(struct watchlist *watchlist,
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struct watchlist_item *item,
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void *notify, void *notify_data,
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watchlist_item_destroy_func_t destroy);
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bool watchlist_remove(struct watchlist *watchlist, unsigned int id);
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void watchlist_destroy(struct watchlist *watchlist);
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void watchlist_free(struct watchlist *watchlist);
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