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https://gitlab.freedesktop.org/wlroots/wlroots.git
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6c350799b2
Ensures there is no field left to its previous undefined value after calling an init function.
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wayland-server-core.h>
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#include <wlr/util/addon.h>
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void wlr_addon_set_init(struct wlr_addon_set *set) {
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memset(set, 0, sizeof(*set));
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wl_list_init(&set->addons);
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}
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void wlr_addon_set_finish(struct wlr_addon_set *set) {
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struct wlr_addon *addon, *tmp;
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wl_list_for_each_safe(addon, tmp, &set->addons, link) {
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wlr_addon_finish(addon);
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addon->impl->destroy(addon);
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}
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}
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void wlr_addon_init(struct wlr_addon *addon, struct wlr_addon_set *set,
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const void *owner, const struct wlr_addon_interface *impl) {
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assert(owner && impl);
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memset(addon, 0, sizeof(*addon));
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struct wlr_addon *iter;
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wl_list_for_each(iter, &set->addons, link) {
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if (iter->owner == addon->owner && iter->impl == addon->impl) {
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assert(0 && "Can't have two addons of the same type with the same owner");
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}
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}
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wl_list_insert(&set->addons, &addon->link);
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addon->owner = owner;
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addon->impl = impl;
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}
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void wlr_addon_finish(struct wlr_addon *addon) {
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wl_list_remove(&addon->link);
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wl_list_init(&addon->link);
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}
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struct wlr_addon *wlr_addon_find(struct wlr_addon_set *set, const void *owner,
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const struct wlr_addon_interface *impl) {
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struct wlr_addon *addon;
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wl_list_for_each(addon, &set->addons, link) {
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if (addon->owner == owner && addon->impl == impl) {
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return addon;
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}
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}
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return NULL;
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}
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