Merge branch 'maint'

* maint:
  erts: Add nif_SUITE:t_on_load
  erts: Improve nif_SUITE:upgrade test
  Don't leak old code when loading a modules with an on_load function

Conflicts:
	erts/preloaded/ebin/erts_code_purger.beam
	erts/preloaded/ebin/erts_internal.beam
	erts/preloaded/src/erts_code_purger.erl

2 files changed, 39 insertions, 2 deletions

diff --git a/erts/preloaded/src/erts_code_purger.erl b/erts/preloaded/src/erts_code_purger.erl
index a48aebe4e7..fd214228c7 100644
--- a/erts/preloaded/src/erts_code_purger.erl
+++ b/erts/preloaded/src/erts_code_purger.erl
@@ -22,7 +22,8 @@
 %% Purpose : Implement system process erts_code_purger
 %%           to handle code module purging.
 
--export([start/0, purge/1, soft_purge/1, pending_purge_lambda/3]).
+-export([start/0, purge/1, soft_purge/1, pending_purge_lambda/3,
+	 finish_after_on_load/2]).
 
 -spec start() -> term().
 start() ->
@@ -41,6 +42,11 @@ handle_request({soft_purge, Mod, From, Ref}, Reqs) when is_atom(Mod), is_pid(Fro
     {Res, NewReqs} = do_soft_purge(Mod, Reqs),
     From ! {reply, soft_purge, Res, Ref},
     check_requests(NewReqs);
+handle_request({finish_after_on_load, {Mod,Keep}, From, Ref}, Reqs)
+  when is_atom(Mod), is_boolean(Keep), is_pid(From) ->
+    NewReqs = do_finish_after_on_load(Mod, Keep, Reqs),
+    From ! {reply, finish_after_on_load, ok, Ref},
+    check_requests(NewReqs);
 handle_request({test_purge, Mod, From, Type, Ref}, Reqs) when is_atom(Mod), is_pid(From) ->
     NewReqs = do_test_purge(Mod, From, Type, Ref, Reqs),
     check_requests(NewReqs);
@@ -132,6 +138,37 @@ do_soft_purge(Mod, Reqs) ->
 	    {erts_internal:purge_module(Mod, PurgeOp), NewReqs}
     end.
 
+%% finish_after_on_load(Module, Keep)
+%% Finish after running on_load function. If Keep is false,
+%% purge the code for the on_load function.
+
+finish_after_on_load(Mod, Keep) ->
+    Ref = make_ref(),
+    erts_code_purger ! {finish_after_on_load, {Mod,Keep}, self(), Ref},
+    receive
+	{reply, finish_after_on_load, Result, Ref} ->
+	    Result
+    end.
+
+do_finish_after_on_load(Mod, Keep, Reqs) ->
+    erlang:finish_after_on_load(Mod, Keep),
+    case Keep of
+	true ->
+	    Reqs;
+	false ->
+	    case erts_internal:purge_module(Mod, prepare_on_load) of
+		false ->
+		    Reqs;
+		true ->
+		    {_DidKill, NewReqs} =
+			check_proc_code(erlang:processes(),
+					Mod, true, Reqs),
+		    true = erts_internal:purge_module(Mod, complete),
+		    NewReqs
+	    end
+    end.
+
+
 %%
 %% check_proc_code(Pids, Mod, Hard, Preqs) - Send asynchronous
 %%   requests to all processes to perform a check_process_code
diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl
index 438fa477e6..fecdfc348c 100644
--- a/erts/preloaded/src/erts_internal.erl
+++ b/erts/preloaded/src/erts_internal.erl
@@ -302,7 +302,7 @@ release_literal_area_switch() ->
 
 -spec purge_module(Module, Op) -> boolean() when
       Module :: module(),
-      Op :: 'prepare' | 'abort' | 'complete'.
+      Op :: 'prepare' | 'prepare_on_load' | 'abort' | 'complete'.
 purge_module(_Module, _Op) ->
     erlang:nif_error(undefined).