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-rw-r--r--erts/preloaded/src/Makefile3
-rw-r--r--erts/preloaded/src/erts_internal.erl6
-rw-r--r--erts/preloaded/src/init.erl1
-rw-r--r--erts/preloaded/src/persistent_term.erl55
4 files changed, 64 insertions, 1 deletions
diff --git a/erts/preloaded/src/Makefile b/erts/preloaded/src/Makefile
index 4333f6643a..e768a8edbc 100644
--- a/erts/preloaded/src/Makefile
+++ b/erts/preloaded/src/Makefile
@@ -47,7 +47,8 @@ PRE_LOADED_ERL_MODULES = \
erts_internal \
erl_tracer \
erts_literal_area_collector \
- erts_dirty_process_signal_handler
+ erts_dirty_process_signal_handler \
+ persistent_term
PRE_LOADED_BEAM_MODULES = \
prim_eval
diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl
index 88f47e917b..63b786a473 100644
--- a/erts/preloaded/src/erts_internal.erl
+++ b/erts/preloaded/src/erts_internal.erl
@@ -90,6 +90,8 @@
-export([create_dist_channel/4]).
+-export([erase_persistent_terms/0]).
+
%%
%% Await result of send to port
%%
@@ -691,3 +693,7 @@ process_flag(_Pid, _Flag, _Value) ->
create_dist_channel(_Node, _DistCtrlr, _Flags, _Ver) ->
erlang:nif_error(undefined).
+
+-spec erase_persistent_terms() -> 'ok'.
+erase_persistent_terms() ->
+ erlang:nif_error(undefined).
diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl
index 253fcf7a1f..b4b8b3bf9b 100644
--- a/erts/preloaded/src/init.erl
+++ b/erts/preloaded/src/init.erl
@@ -552,6 +552,7 @@ stop(Reason,State) ->
do_stop(restart,#state{start = Start, flags = Flags, args = Args}) ->
%% Make sure we don't have any outstanding messages before doing the restart.
flush(),
+ erts_internal:erase_persistent_terms(),
boot(Start,Flags,Args);
do_stop(reboot,_) ->
halt();
diff --git a/erts/preloaded/src/persistent_term.erl b/erts/preloaded/src/persistent_term.erl
new file mode 100644
index 0000000000..5d0c266127
--- /dev/null
+++ b/erts/preloaded/src/persistent_term.erl
@@ -0,0 +1,55 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+-module(persistent_term).
+
+-export([erase/1,get/0,get/1,info/0,put/2]).
+
+-type key() :: term().
+-type value() :: term().
+
+-spec erase(Key) -> Result when
+ Key :: key(),
+ Result :: boolean().
+erase(_Key) ->
+ erlang:nif_error(undef).
+
+-spec get() -> List when
+ List :: [{key(),value()}].
+get() ->
+ erlang:nif_error(undef).
+
+-spec get(Key) -> Value when
+ Key :: key(),
+ Value :: value().
+get(_Key) ->
+ erlang:nif_error(undef).
+
+-spec info() -> Info when
+ Info :: #{'count':=Count,'memory':=Memory},
+ Count :: non_neg_integer(),
+ Memory :: non_neg_integer().
+info() ->
+ erlang:nif_error(undef).
+
+-spec put(Key, Value) -> 'ok' when
+ Key :: key(),
+ Value :: value().
+put(_Key, _Value) ->
+ erlang:nif_error(undef).