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Test case for OTP-9422

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1 parent a3d8134 commit 41b311dc3e71fa2efa5aa313d95609e93383d36d @sverker sverker committed Jul 21, 2011
Showing with 59 additions and 2 deletions.
  1. +59 −2 erts/emulator/test/match_spec_SUITE.erl
@@ -27,8 +27,9 @@
destructive_in_test_bif/1, guard_exceptions/1,
unary_plus/1, unary_minus/1, moving_labels/1]).
-export([fpe/1]).
+-export([otp_9422/1]).
--export([runner/2]).
+-export([runner/2, loop_runner/3]).
-export([f1/1, f2/2, f3/2, fn/1, fn/2, fn/3]).
-export([do_boxed_and_small/0]).
@@ -57,7 +58,8 @@ all() ->
trace_control_word, silent, silent_no_ms, ms_trace2,
ms_trace3, boxed_and_small, destructive_in_test_bif,
guard_exceptions, unary_plus, unary_minus, fpe,
- moving_labels];
+ moving_labels,
+ otp_9422];
true -> [not_run]
end.
@@ -208,6 +210,43 @@ test_3(Config) when is_list(Config) ->
?line collect(P1, [{trace, P1, call, {?MODULE, f2, [a, b]}, [true]}]),
?line ok.
+otp_9422(doc) -> [];
+otp_9422(Config) when is_list(Config) ->
+ Laps = 1000,
+ ?line Fun1 = fun() -> otp_9422_tracee() end,
+ ?line P1 = spawn_link(?MODULE, loop_runner, [self(), Fun1, Laps]),
+ io:format("spawned ~p as tracee\n", [P1]),
+
+ ?line erlang:trace(P1, true, [call, silent]),
+
+ ?line Fun2 = fun() -> otp_9422_trace_changer() end,
+ ?line P2 = spawn_link(?MODULE, loop_runner, [self(), Fun2, Laps]),
+ io:format("spawned ~p as trace_changer\n", [P2]),
+
+ start_collect(P1),
+ start_collect(P2),
+
+ %%receive after 10*1000 -> ok end,
+
+ stop_collect(P1),
+ stop_collect(P2),
+ ok.
+
+otp_9422_tracee() ->
+ ?MODULE:f1(a),
+ ?MODULE:f1(b),
+ ?MODULE:f1(c).
+
+otp_9422_trace_changer() ->
+ Pat1 = [{[a], [], [{enable_trace, arity}]}],
+ ?line erlang:trace_pattern({?MODULE, f1, 1}, Pat1),
+ Pat2 = [{[b], [], [{disable_trace, arity}]}],
+ ?line erlang:trace_pattern({?MODULE, f1, 1}, Pat2).
+
+
+
+
+
bad_match_spec_bin(Config) when is_list(Config) ->
{'EXIT',{badarg,_}} = (catch ets:match_spec_run([1], <<>>)),
B0 = <<1,2>>,
@@ -932,6 +971,24 @@ runner(Collector, Fun) ->
Collector ! {gone, self()}
end.
+loop_runner(Collector, Fun, Laps) ->
+ receive
+ {go, Collector} ->
+ go
+ end,
+ loop_runner_cont(Collector, Fun, 0, Laps).
+
+loop_runner_cont(_Collector, _Fun, Laps, Laps) ->
+ receive
+ {done, Collector} ->
+ io:format("loop_runner ~p exit after ~p laps\n", [self(), Laps]),
+ Collector ! {gone, self()}
+ end;
+loop_runner_cont(Collector, Fun, N, Laps) ->
+ Fun(),
+ loop_runner_cont(Collector, Fun, N+1, Laps).
+
+
f1(X) ->
{X}.

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