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Relax orderings in window_draw_list (and make it actually atomic)

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This commit is contained in:
Thom Chiovoloni 2020-12-03 05:05:03 -08:00
parent c768fc49a4
commit 4e7990b157
1 changed files with 10 additions and 3 deletions
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13
src/window_draw_list.rs
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@ -66,16 +66,23 @@ static WINDOW_DRAW_LIST_LOADED: std::sync::atomic::AtomicBool =
impl<'ui> Drop for WindowDrawList<'ui> {
fn drop(&mut self) {
WINDOW_DRAW_LIST_LOADED.store(false, std::sync::atomic::Ordering::SeqCst);
WINDOW_DRAW_LIST_LOADED.store(false, std::sync::atomic::Ordering::Release);
}
}
impl<'ui> WindowDrawList<'ui> {
pub(crate) fn new(_: &Ui<'ui>) -> Self {
if WINDOW_DRAW_LIST_LOADED.load(std::sync::atomic::Ordering::SeqCst) {
let already_loaded = WINDOW_DRAW_LIST_LOADED
.compare_exchange(
false,
true,
std::sync::atomic::Ordering::Acquire,
std::sync::atomic::Ordering::Relaxed,
)
.is_err();
if already_loaded {
panic!("WindowDrawList is already loaded! You can only load one instance of it!")
}
WINDOW_DRAW_LIST_LOADED.store(true, std::sync::atomic::Ordering::SeqCst);
Self {
draw_list: unsafe { sys::igGetWindowDrawList() },
_phantom: PhantomData,