Non-blocking lock macros injection in builtins

Cython/Compiler/Builtin.py

@@ -427,6 +427,9 @@ def inject_cypclass_lock_macros():
     blocking_macro_type = PyrexTypes.CFuncType(PyrexTypes.c_void_type, [PyrexTypes.CFuncTypeArg("obj", PyrexTypes.cy_object_type, None)], nogil = 1)
     for macro in ("Cy_RLOCK", "Cy_WLOCK", "Cy_UNLOCK"):
         builtin_scope.declare_builtin_cfunction(macro, blocking_macro_type, macro)
+    nonblocking_macro_type = PyrexTypes.CFuncType(PyrexTypes.c_int_type, [PyrexTypes.CFuncTypeArg("obj", PyrexTypes.cy_object_type, None)], nogil = 1)
+    for macro in ("Cy_TRYRLOCK", "Cy_TRYWLOCK"):
+        builtin_scope.declare_builtin_cfunction(macro, nonblocking_macro_type, macro)
 
 def init_builtins():
     init_builtin_structs()