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Remove wlr_signal_emit_safe

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This commit is contained in:
Alexander Orzechowski 2022-08-18 07:14:28 -04:00
parent ef4baea0e2
commit 346e524201
3 changed files with 0 additions and 43 deletions
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8
include/util/signal.h
View file

@ -1,8 +0,0 @@
#ifndef UTIL_SIGNAL_H
#define UTIL_SIGNAL_H
#include <wayland-server-core.h>
void wlr_signal_emit_safe(struct wl_signal *signal, void *data);
#endif

1
util/meson.build
View file

@ -6,7 +6,6 @@ wlr_files += files(
'log.c', 'log.c',
'region.c', 'region.c',
'shm.c', 'shm.c',
'signal.c',
'time.c', 'time.c',
'token.c', 'token.c',
) )

34
util/signal.c
View file

@ -1,34 +0,0 @@
#include "util/signal.h"
static void handle_noop(struct wl_listener *listener, void *data) {
// Do nothing
}
void wlr_signal_emit_safe(struct wl_signal *signal, void *data) {
struct wl_listener cursor;
struct wl_listener end;
/* Add two special markers: one cursor and one end marker. This way, we know
* that we've already called listeners on the left of the cursor and that we
* don't want to call listeners on the right of the end marker. The 'it'
* function can remove any element it wants from the list without troubles.
* wl_list_for_each_safe tries to be safe but it fails: it works fine
* if the current item is removed, but not if the next one is. */
wl_list_insert(&signal->listener_list, &cursor.link);
cursor.notify = handle_noop;
wl_list_insert(signal->listener_list.prev, &end.link);
end.notify = handle_noop;
while (cursor.link.next != &end.link) {
struct wl_list *pos = cursor.link.next;
struct wl_listener *l = wl_container_of(pos, l, link);
wl_list_remove(&cursor.link);
wl_list_insert(pos, &cursor.link);
l->notify(l, data);
}
wl_list_remove(&cursor.link);
wl_list_remove(&end.link);
}