internal static extern void cl_engine_set_clcb_sigload(IntPtr engine, clcb_sigload callback, IntPtr context);
internal static extern void cl_engine_set_clcb_sigload(IntPtr engine, clcb_sigload callback, IntPtr context);
internal static extern void cl_engine_set_clcb_sigload(IntPtr engine, clcb_sigload callback, IntPtr context);
internal static extern void cl_engine_set_clcb_sigload(IntPtr engine, clcb_sigload callback, IntPtr context);