Add memory barrier to Mutex#unlock on aarch64 (#14272)

crystal-lang · Feb 10, 2024 · db67d71 · db67d71
1 parent a3e8d12
commit db67d71
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/mutex.cr b/src/mutex.cr
@@ -107,6 +107,9 @@ class Mutex
       @mutex_fiber = nil
     end
 
+    {% if flag?(:aarch64) %}
+      Atomic::Ops.fence :sequentially_consistent, false
+    {% end %}
     @state.lazy_set(0)
 
     if @queue_count.get == 0