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%% This tests that the race condition detection between mnesia:dirty_read/
%% mnesia:dirty_write is robust even when the functions are called with
%% different atoms as arguments.
-module(mnesia_diff_atoms_race2).
-export([test/2]).
-record(employee, {emp_no,
name,
salary,
sex,
phone,
room_no}).
-record(employer, {emp_no,
name,
salary,
sex,
phone,
room_no}).
test(Eno, Raise) ->
{race(employee, Eno, Raise), no_race(employee, Eno, Raise)}.
race(Tab, Eno, Raise) ->
[E] = mnesia:dirty_read(Tab, Eno),
Salary = E#employee.salary + Raise,
New = E#employee{salary = Salary},
aux(New).
no_race(Tab, Eno, Raise) ->
[E] = mnesia:dirty_read(Tab, Eno),
AnotherRecord = #employer{},
aux(AnotherRecord).
aux(Record) ->
mnesia:dirty_write(Record).
|
