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%% This tests that the race condition detection between whereis/register
%% is robust w.r.t. having the calls in separate functions.
-module(whereis_diff_functions4).
-export([test/2]).
test(AnAtom, Fun) ->
start(AnAtom, Fun).
start(AnAtom, Fun) ->
Pid1 = spawn(Fun),
no_race(Pid1),
case whereis(AnAtom) of
undefined ->
Pid2 = spawn(Fun),
race(AnAtom, Pid2),
case whereis(AnAtom) of
undefined ->
Pid3 = spawn(Fun),
race(AnAtom, Pid3);
P when is_pid(P) ->
true
end;
P when is_pid(P) ->
true
end.
no_race(Pid) ->
register(master, Pid).
race(Atom, Pid) ->
register(Atom, Pid).
|
