Fix GitHub Actions for threading.

PiperOrigin-RevId: 922926969 Change-Id: I968e6b130b6125dbc0ec65ba913d04292270b563
2026-05-28 12:56:19 -07:00
parent 9436972a22
commit b612d352d4
3 changed files with 35 additions and 4 deletions
@@ -69,6 +69,16 @@
  #endif
 #endif

+// Atomics helper for size_t.
+#if defined(_MSC_VER) && !defined(__clang__)
+  #include <intrin.h>
+  #define mj_atomic_add_size_t(ptr, val) \
+      (size_t)_InterlockedExchangeAdd64((__int64 volatile*)(ptr), (__int64)(val))
+#else
+  #define mj_atomic_add_size_t(ptr, val) \
+      __atomic_fetch_add(ptr, val, __ATOMIC_RELAXED)
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif