%% This tests the presence of possible races due to an mnesia:dirty_read/
%% mnesia:dirty_write combination. It takes into account the argument types
%% of the calls.

-module(mnesia_dirty_read_one_write_two).
-export([raise/2]).

-record(employee, {emp_no,
                   name,
                   salary,
                   sex,
                   phone,
                   room_no}).


raise(Eno, Raise) ->
    [E] = mnesia:dirty_read({employee, Eno}),
    Salary = E#employee.salary + Raise,
    New = E#employee{salary = Salary},
    mnesia:dirty_write(employee, New).