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-rw-r--r--erts/emulator/test/gc_SUITE.erl151
1 files changed, 76 insertions, 75 deletions
diff --git a/erts/emulator/test/gc_SUITE.erl b/erts/emulator/test/gc_SUITE.erl
index 35dd147550..2c2cb9c32d 100644
--- a/erts/emulator/test/gc_SUITE.erl
+++ b/erts/emulator/test/gc_SUITE.erl
@@ -203,89 +203,90 @@ long_receive() ->
end.
minor_major_gc_option_self(_Config) ->
- Endless = fun Endless() ->
- receive
- {gc, Type} -> erlang:garbage_collect(self(), [{type, Type}])
- after 100 -> ok end,
- Endless()
- end,
-
- %% Try as major, a test process will self-trigger GC
- P1 = spawn(Endless),
- erlang:garbage_collect(P1, []),
- erlang:trace(P1, true, [garbage_collection]),
- P1 ! {gc, major},
- expect_trace_messages(P1, [gc_major_start, gc_major_end]),
- erlang:trace(P1, false, [garbage_collection]),
- erlang:exit(P1, kill),
-
- %% Try as minor, a test process will self-trigger GC
- P2 = spawn(Endless),
- erlang:garbage_collect(P2, []),
- erlang:trace(P2, true, [garbage_collection]),
- P2 ! {gc, minor},
- expect_trace_messages(P2, [gc_minor_start, gc_minor_end]),
- erlang:trace(P2, false, [garbage_collection]),
- erlang:exit(P2, kill).
+ %% Try as major, the test process will self-trigger GC
+ check_gc_tracing_around(
+ fun(Pid, Ref) ->
+ Pid ! {gc, Ref, major}
+ end, [gc_major_start, gc_major_end]),
+
+ %% Try as minor, the test process will self-trigger GC
+ check_gc_tracing_around(
+ fun(Pid, Ref) ->
+ Pid ! {gc, Ref, minor}
+ end, [gc_minor_start, gc_minor_end]).
minor_major_gc_option_async(_Config) ->
- Endless = fun Endless() ->
- receive after 100 -> ok end,
- Endless()
- end,
-
- %% Try with default option, must be major gc
- P1 = spawn(Endless),
- erlang:garbage_collect(P1, []),
- erlang:trace(P1, true, [garbage_collection]),
- erlang:garbage_collect(P1, []),
- expect_trace_messages(P1, [gc_major_start, gc_major_end]),
- erlang:trace(P1, false, [garbage_collection]),
- erlang:exit(P1, kill),
+ %% Try with default option, must be major GC
+ check_gc_tracing_around(
+ fun(Pid, _Ref) ->
+ erlang:garbage_collect(Pid, [])
+ end, [gc_major_start, gc_major_end]),
%% Try with the 'major' type
- P2 = spawn(Endless),
- erlang:garbage_collect(P2, []),
- erlang:trace(P2, true, [garbage_collection]),
- erlang:garbage_collect(P2, [{type, major}]),
- expect_trace_messages(P2, [gc_major_start, gc_major_end]),
- erlang:trace(P2, false, [garbage_collection]),
- erlang:exit(P2, kill),
+ check_gc_tracing_around(
+ fun(Pid, _Ref) ->
+ erlang:garbage_collect(Pid, [{type, major}])
+ end, [gc_major_start, gc_major_end]),
%% Try with 'minor' option, once
- P3 = spawn(Endless),
- erlang:garbage_collect(P3, []),
- erlang:trace(P3, true, [garbage_collection]),
- erlang:garbage_collect(P3, [{type, minor}]),
- expect_trace_messages(P3, [gc_minor_start, gc_minor_end]),
- erlang:trace(P3, false, [garbage_collection]),
- erlang:exit(P3, kill),
+ check_gc_tracing_around(
+ fun(Pid, _Ref) ->
+ erlang:garbage_collect(Pid, [{type, minor}])
+ end, [gc_minor_start, gc_minor_end]),
%% Try with 'minor' option, once, async
- P4 = spawn(Endless),
+ check_gc_tracing_around(
+ fun(Pid, Ref) ->
+ ?assertEqual(async,
+ erlang:garbage_collect(Pid, [{type, minor}, {async, Ref}])),
+
+ receive
+ {garbage_collect, Ref, true} ->
+ ok
+ after 10000 ->
+ ct:fail("Did not receive a completion notification on async GC")
+ end
+ end, [gc_minor_start, gc_minor_end]).
+
+%% Traces garbage collection around the given operation, and fails the test if
+%% it results in any unexpected messages or if the expected trace tags are not
+%% received.
+check_gc_tracing_around(Fun, ExpectedTraceTags) ->
Ref = erlang:make_ref(),
- erlang:garbage_collect(P4, []),
- erlang:trace(P4, true, [garbage_collection]),
- ?assertEqual(async,
- erlang:garbage_collect(P4, [{type, minor}, {async, Ref}])),
- expect_trace_messages(P4, [gc_minor_start, gc_minor_end]),
- erlang:trace(P4, false, [garbage_collection]),
- receive {garbage_collect, Ref, true} -> ok;
- Other4 -> ct:pal("Unexpected message: ~p~n"
- ++ "while waiting for async gc result", [Other4])
- after 2000 -> ?assert(false)
- end,
- erlang:exit(P4, kill).
-
-%% Given a list of atoms, trace tags - receives messages and checks if they are
-%% trace events, and if the tag matches. Else will crash failing the test.
-expect_trace_messages(_Pid, []) -> ok;
+ Pid = spawn(
+ fun Endless() ->
+ receive
+ {gc, Ref, Type} ->
+ erlang:garbage_collect(self(), [{type, Type}])
+ after 100 ->
+ ok
+ end,
+ Endless()
+ end),
+ erlang:garbage_collect(Pid, []),
+ erlang:trace(Pid, true, [garbage_collection]),
+ Fun(Pid, Ref),
+ expect_trace_messages(Pid, ExpectedTraceTags),
+ erlang:trace(Pid, false, [garbage_collection]),
+ erlang:exit(Pid, kill),
+ check_no_unexpected_messages().
+
+%% Ensures that trace messages with the provided tags have all been received
+%% within a reasonable timeframe.
+expect_trace_messages(_Pid, []) ->
+ ok;
expect_trace_messages(Pid, [Tag | TraceTags]) ->
receive
- {trace, Pid, Tag, _Data} -> ok;
- AnythingElse ->
- ct:pal("Unexpected message: ~p~nWhile expected {trace, _, ~p, _}",
- [AnythingElse, Tag]),
- ?assert(false)
- end,
- expect_trace_messages(Pid, TraceTags).
+ {trace, Pid, Tag, _Data} ->
+ expect_trace_messages(Pid, TraceTags)
+ after 4000 ->
+ ct:fail("Didn't receive tag ~p within 4000ms", [Tag])
+ end.
+
+check_no_unexpected_messages() ->
+ receive
+ Anything ->
+ ct:fail("Unexpected message: ~p", [Anything])
+ after 0 ->
+ ok
+ end.