pub unsafe fn cancel_on_dsm_detach(
arg_seg: *mut dsm_segment,
arg_function: on_dsm_detach_callback,
arg_arg: Datum,
)pub unsafe fn cancel_on_dsm_detach(
arg_seg: *mut dsm_segment,
arg_function: on_dsm_detach_callback,
arg_arg: Datum,
)