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-rw-r--r--erts/emulator/test/code_SUITE.erl82
-rw-r--r--erts/emulator/test/code_SUITE_data/literals.erl7
2 files changed, 87 insertions, 2 deletions
diff --git a/erts/emulator/test/code_SUITE.erl b/erts/emulator/test/code_SUITE.erl
index 9f318a38be..1acc4538fb 100644
--- a/erts/emulator/test/code_SUITE.erl
+++ b/erts/emulator/test/code_SUITE.erl
@@ -26,7 +26,8 @@
t_check_process_code_ets/1,
external_fun/1,get_chunk/1,module_md5/1,make_stub/1,
make_stub_many_funs/1,constant_pools/1,constant_refc_binaries/1,
- false_dependency/1,coverage/1,fun_confusion/1]).
+ false_dependency/1,coverage/1,fun_confusion/1,
+ t_copy_literals/1]).
-define(line_trace, 1).
-include_lib("test_server/include/test_server.hrl").
@@ -38,7 +39,7 @@ all() ->
t_check_process_code_ets, t_check_old_code, external_fun, get_chunk,
module_md5, make_stub, make_stub_many_funs,
constant_pools, constant_refc_binaries, false_dependency,
- coverage, fun_confusion].
+ coverage, fun_confusion, t_copy_literals].
groups() ->
[].
@@ -753,6 +754,80 @@ compile_load(Mod, Src, Ver) ->
{module,Mod} = code:load_binary(Mod, "fun_confusion.beam", Code1),
ok.
+
+t_copy_literals(Config) when is_list(Config) ->
+ %% Compile the the literals module.
+ Data = ?config(data_dir, Config),
+ File = filename:join(Data, "literals"),
+ {ok,literals,Code} = compile:file(File, [report,binary]),
+ {module,literals} = erlang:load_module(literals, Code),
+
+ N = 30,
+ Me = self(),
+ %% reload literals code every 567 ms
+ Rel = spawn_link(fun() -> reloader(literals,Code,567) end),
+ %% add new literal msgs to the loop every 789 ms
+ Sat = spawn_link(fun() -> saturate(Me,789) end),
+ %% run for 10s
+ _ = spawn_link(fun() -> receive after 10000 -> Me ! done end end),
+ ok = chase_msg(N, Me),
+ %% cleanup
+ Rel ! done,
+ Sat ! done,
+ ok = flush(),
+ ok.
+
+
+chase_msg(0, Pid) ->
+ chase_loop(Pid);
+chase_msg(N, Master) ->
+ Pid = spawn_link(fun() -> chase_msg(N - 1,Master) end),
+ chase_loop(Pid).
+
+chase_loop(Pid) ->
+ receive
+ done ->
+ Pid ! done,
+ ok;
+ {_From,Msg} ->
+ Pid ! {self(), Msg},
+ ok = traverse(Msg),
+ chase_loop(Pid)
+ end.
+
+saturate(Pid,Time) ->
+ Es = [msg1,msg2,msg3,msg4,msg5],
+ Msg = [literals:E()||E <- Es],
+ Pid ! {self(), Msg},
+ receive
+ done -> ok
+ after Time ->
+ saturate(Pid,Time)
+ end.
+
+traverse([]) -> ok;
+traverse([H|T]) ->
+ ok = traverse(H),
+ traverse(T);
+traverse(T) when is_tuple(T) -> ok;
+traverse(B) when is_binary(B) -> ok;
+traverse(I) when is_integer(I) -> ok;
+traverse(#{ 1 := V1, b := V2 }) ->
+ ok = traverse(V1),
+ ok = traverse(V2),
+ ok.
+
+
+reloader(Mod,Code,Time) ->
+ receive
+ done -> ok
+ after Time ->
+ code:purge(Mod),
+ {module,Mod} = erlang:load_module(Mod, Code),
+ reloader(Mod,Code,Time)
+ end.
+
+
%% Utilities.
make_sub_binary(Bin) when is_binary(Bin) ->
@@ -775,4 +850,7 @@ bit_sized_binary(Bin0) ->
BitSize = 8*size(Bin) + 1,
Bin.
+flush() ->
+ receive _ -> flush() after 0 -> ok end.
+
id(I) -> I.
diff --git a/erts/emulator/test/code_SUITE_data/literals.erl b/erts/emulator/test/code_SUITE_data/literals.erl
index 9802d9d3f9..a36bfe09dd 100644
--- a/erts/emulator/test/code_SUITE_data/literals.erl
+++ b/erts/emulator/test/code_SUITE_data/literals.erl
@@ -20,6 +20,7 @@
-module(literals).
-export([a/0,b/0,huge_bignum/0,binary/0,unused_binaries/0,bits/0]).
+-export([msg1/0,msg2/0,msg3/0,msg4/0,msg5/0]).
a() ->
{a,42.0,[7,38877938333399637266518333334747]}.
@@ -101,3 +102,9 @@ unused_binaries() ->
bits() ->
{bits,<<42:13,?MB_1>>}.
+
+msg1() -> "halloj".
+msg2() -> {"hello","world"}.
+msg3() -> <<"halloj">>.
+msg4() -> #{ 1=> "hello", b => "world"}.
+msg5() -> {1,2,3,4,5,6}.