Function pgrx_pg_sys::heap_update

pub unsafe fn heap_update(
    arg_relation: Relation,
    arg_otid: ItemPointer,
    arg_newtup: HeapTuple,
    arg_cid: CommandId,
    arg_crosscheck: Snapshot,
    arg_wait: bool,
    arg_tmfd: *mut TM_FailureData,
    arg_lockmode: *mut LockTupleMode
) -> TM_Result