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-rw-r--r--erts/emulator/beam/beam_load.c2
-rw-r--r--erts/emulator/test/code_SUITE.erl58
-rw-r--r--erts/emulator/test/code_SUITE_data/versions.erl33
3 files changed, 90 insertions, 3 deletions
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index e6fbdc0d45..dd788df6e4 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -956,7 +956,7 @@ insert_new_code(Process *c_p, ErtsProcLocks c_p_locks,
Eterm retval;
int i;
- if ((retval = beam_make_current_old(c_p, c_p_locks, module)) < 0) {
+ if ((retval = beam_make_current_old(c_p, c_p_locks, module)) != NIL) {
erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
erts_dsprintf(dsbufp,
"Module %T must be purged before loading\n",
diff --git a/erts/emulator/test/code_SUITE.erl b/erts/emulator/test/code_SUITE.erl
index 2f9b01cc92..25ce94096f 100644
--- a/erts/emulator/test/code_SUITE.erl
+++ b/erts/emulator/test/code_SUITE.erl
@@ -20,7 +20,7 @@
-module(code_SUITE).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
- new_binary_types/1,
+ versions/1,new_binary_types/1,
t_check_process_code/1,t_check_old_code/1,
t_check_process_code_ets/1,
external_fun/1,get_chunk/1,module_md5/1,make_stub/1,
@@ -33,7 +33,7 @@
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [new_binary_types, t_check_process_code,
+ [versions, new_binary_types, t_check_process_code,
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,
@@ -56,6 +56,60 @@ init_per_group(_GroupName, Config) ->
end_per_group(_GroupName, Config) ->
Config.
+%% Make sure that only two versions of a module can be loaded.
+versions(Config) when is_list(Config) ->
+ V1 = compile_version(1, Config),
+ V2 = compile_version(2, Config),
+ V3 = compile_version(3, Config),
+
+ {ok,P1,1} = load_version(V1, 1),
+ {ok,P2,2} = load_version(V2, 2),
+ {error,not_purged} = load_version(V2, 2),
+ {error,not_purged} = load_version(V3, 3),
+
+ 1 = check_version(P1),
+ 2 = check_version(P2),
+ 2 = versions:version(),
+
+ %% Kill processes, unload code.
+ P1 ! P2 ! done,
+ _ = monitor(process, P1),
+ _ = monitor(process, P2),
+ receive
+ {'DOWN',_,process,P1,normal} -> ok
+ end,
+ receive
+ {'DOWN',_,process,P2,normal} -> ok
+ end,
+ true = erlang:purge_module(versions),
+ true = erlang:delete_module(versions),
+ true = erlang:purge_module(versions),
+ ok.
+
+compile_version(Version, Config) ->
+ Data = ?config(data_dir, Config),
+ File = filename:join(Data, "versions"),
+ {ok,versions,Bin} = compile:file(File, [{d,'VERSION',Version},
+ binary,report]),
+ Bin.
+
+load_version(Code, Ver) ->
+ case erlang:load_module(versions, Code) of
+ {module,versions} ->
+ Pid = spawn_link(versions, loop, []),
+ Ver = versions:version(),
+ Ver = check_version(Pid),
+ {ok,Pid,Ver};
+ Error ->
+ Error
+ end.
+
+check_version(Pid) ->
+ Pid ! {self(),version},
+ receive
+ {Pid,version,Version} ->
+ Version
+ end.
new_binary_types(Config) when is_list(Config) ->
?line Data = ?config(data_dir, Config),
diff --git a/erts/emulator/test/code_SUITE_data/versions.erl b/erts/emulator/test/code_SUITE_data/versions.erl
new file mode 100644
index 0000000000..7a6fd8847d
--- /dev/null
+++ b/erts/emulator/test/code_SUITE_data/versions.erl
@@ -0,0 +1,33 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2011. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(versions).
+-export([loop/0,version/0]).
+
+loop() ->
+ receive
+ {Pid,version} ->
+ Pid ! {self(),version,version()},
+ loop();
+ done ->
+ ok
+ end.
+
+version() ->
+ ?VERSION.