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-module(call_purged_fun_tester).
-export([do/4]).
%% Resurrect line macro when hipe compiled
-ifdef(hipe).
-define(line, put(the_line,?LINE),).
do(Priv, Data, Type, Opts) ->
try do_it(Priv, Data, Type, Opts)
catch
C:E ->
ST = erlang:get_stacktrace(),
io:format("Caught exception from line ~p:\n~p\n",
[get(the_line), ST]),
io:format("Message queue: ~p\n", [process_info(self(), messages)]),
erlang:raise(C, E, ST)
end.
-else.
-define(line,).
do(P,D,T,O) ->
do_it(P,D,T,O).
-endif.
do_it(Priv, Data, Type, Opts) ->
File = filename:join(Data, "my_code_test2"),
Code = filename:join(Priv, "my_code_test2"),
catch erlang:purge_module(my_code_test2),
catch erlang:delete_module(my_code_test2),
catch erlang:purge_module(my_code_test2),
?line {ok,my_code_test2} = c:c(File, [{outdir,Priv} | Opts]),
?line IsNative = lists:member(native,Opts),
?line IsNative = code:is_module_native(my_code_test2),
?line T = ets:new(my_code_test2_fun_table, []),
ets:insert(T, {my_fun,my_code_test2:make_fun(4711)}),
ets:insert(T, {my_fun2,my_code_test2:make_fun2()}),
Papa = self(),
{P0,M0} = spawn_monitor(fun () ->
[{my_fun2,F2}] = ets:lookup(T, my_fun2),
F2(fun () ->
Papa ! {self(),"going to sleep"},
receive {Papa,"wake up"} -> ok end
end,
fun () -> ok end),
exit(completed)
end),
?line PurgeType = case Type of
code_gone ->
ok = file:delete(Code++".beam"),
true;
code_reload ->
true;
code_there ->
false
end,
?line true = erlang:delete_module(my_code_test2),
?line ok = receive {P0, "going to sleep"} -> ok
after 1000 -> timeout
end,
?line Purge = start_purge(my_code_test2, PurgeType),
?line {P1, M1} = spawn_monitor(fun () ->
?line [{my_fun,F}] = ets:lookup(T, my_fun),
?line 4712 = F(1),
exit(completed)
end),
?line ok = wait_until(fun () ->
{status, suspended}
== process_info(P1, status)
end),
?line ok = continue_purge(Purge),
?line {P2, M2} = spawn_monitor(fun () ->
?line [{my_fun,F}] = ets:lookup(T, my_fun),
?line 4713 = F(2),
exit(completed)
end),
?line {P3, M3} = spawn_monitor(fun () ->
?line [{my_fun,F}] = ets:lookup(T, my_fun),
?line 4714 = F(3),
exit(completed)
end),
?line ok = wait_until(fun () ->
{status, suspended}
== process_info(P2, status)
end),
?line ok = wait_until(fun () ->
{status, suspended}
== process_info(P3, status)
end),
?line {current_function,
{erts_code_purger,
pending_purge_lambda,
3}} = process_info(P1, current_function),
?line {current_function,
{erts_code_purger,
pending_purge_lambda,
3}} = process_info(P2, current_function),
?line {current_function,
{erts_code_purger,
pending_purge_lambda,
3}} = process_info(P3, current_function),
case Type of
code_there ->
?line false = complete_purge(Purge),
P0 ! {self(), "wake up"},
?line completed = wait_for_down(P0,M0);
_ ->
?line {true, true} = complete_purge(Purge),
?line killed = wait_for_down(P0,M0)
end,
case Type of
code_gone ->
?line {undef, _} = wait_for_down(P1,M1),
?line {undef, _} = wait_for_down(P2,M2),
?line {undef, _} = wait_for_down(P3,M3);
_ ->
?line completed = wait_for_down(P1,M1),
?line completed = wait_for_down(P2,M2),
?line completed = wait_for_down(P3,M3),
catch erlang:purge_module(my_code_test2),
catch erlang:delete_module(my_code_test2),
catch erlang:purge_module(my_code_test2)
end,
ok.
wait_for_down(P,M) ->
receive
{'DOWN', M, process, P, Reason} ->
Reason
after 1000 ->
timeout
end.
wait_until(Fun) ->
wait_until(Fun, 20).
wait_until(Fun, N) ->
case {Fun(),N} of
{true, _} ->
ok;
{false, 0} ->
timeout;
{false, _} ->
receive after 100 -> ok end,
wait_until(Fun, N-1)
end.
start_purge(Mod, Type) when is_atom(Mod)
andalso ((Type == true)
orelse (Type == false)) ->
Ref = make_ref(),
erts_code_purger ! {test_purge, Mod, self(), Type, Ref},
receive
{started, Ref} ->
Ref
end.
continue_purge(Ref) when is_reference(Ref) ->
erts_code_purger ! {continue, Ref},
receive
{continued, Ref} ->
ok
end.
complete_purge(Ref) when is_reference(Ref) ->
erts_code_purger ! {complete, Ref},
receive
{test_purge, Res, Ref} ->
Res
end.
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