pgrx_pg_sys

Function systable_inplace_update_begin

Source 
pub unsafe fn systable_inplace_update_begin(
    arg_relation: Relation,
    arg_indexId: Oid,
    arg_indexOK: bool,
    arg_snapshot: Snapshot,
    arg_nkeys: c_int,
    arg_key: *const ScanKeyData,
    arg_oldtupcopy: *mut HeapTuple,
    arg_state: *mut *mut c_void,
)