@@ -607,10 +607,11 @@ // Low-level leaf-lock primitives used to implement synchronization. // Not for general synchronization use. static void SpinAcquire(volatile int * Lock); static void SpinRelease(volatile int * Lock); + static bool TrySpinAcquire(volatile int * adr); #if defined(__APPLE__) && defined(AARCH64) private: DEBUG_ONLY(bool _wx_init); WXMode _wx_state;