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-module(no_5).
-compile([export_all,nowarn_export_all]).
?MODULE() ->
ok.
%% Nested receives were not handled properly.
confusing_recv_mark(Pid) ->
Ref = make_ref(),
%% There would be a recv_mark here.
MRef = erlang:monitor(process, Pid),
receive
Ref ->
%% And a recv_set here.
receive
MRef -> gurka
end;
MRef ->
gaffel
end.
%% The optimization could potentially be improved to
%% handle matching of multiple refs, like this:
proper_recv_mark(Pid) ->
%% Place the recv_mark before the creation of both refs.
Ref = make_ref(),
MRef = erlang:monitor(process, Pid),
%% Place the recv_set here.
receive
Ref ->
receive
MRef -> gurka
end;
MRef ->
gaffel
end.
|
