Module: wine Branch: master Commit: 94512ecc124fb5bf78db1c355b9fb5674090bc19 URL: https://gitlab.winehq.org/wine/wine/-/commit/94512ecc124fb5bf78db1c355b9fb56... Author: Jinoh Kang <jinoh.kang.kr(a)gmail.com> Date: Sun Sep 18 23:31:19 2022 +0900 concrt140: Use atomic write for releasing threadsafe_queue spin lock. This fixes data race in ARM/ARM64 platforms, and prevents potential memory access reordering by the compiler. --- dlls/concrt140/details.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/dlls/concrt140/details.c b/dlls/concrt140/details.c index be5bc4a81d4..978a7a8f96e 100644 --- a/dlls/concrt140/details.c +++ b/dlls/concrt140/details.c @@ -225,7 +225,7 @@ static void threadsafe_queue_push(threadsafe_queue *queue, size_t id, queue->tail = p; if(!queue->head) queue->head = p; - queue->lock = 0; + WriteRelease(&queue->lock, 0); } else { @@ -275,7 +275,7 @@ static BOOL threadsafe_queue_pop(threadsafe_queue *queue, size_t id, queue->head = p->_Next; if(!queue->head) queue->tail = NULL; - queue->lock = 0; + WriteRelease(&queue->lock, 0); /* TODO: Add exception handling */ call__Concurrent_queue_base_v4__Deallocate_page(parent, p);