Introduce gen_statem vs gen_fsm benchmark

Conflicts:
	lib/stdlib/test/stdlib_bench_SUITE.erl

1 files changed, 66 insertions, 0 deletions

diff --git a/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem_complex.erl b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem_complex.erl
new file mode 100644
index 0000000000..983227d281
--- /dev/null
+++ b/lib/stdlib/test/stdlib_bench_SUITE_data/generic_statem_complex.erl
@@ -0,0 +1,66 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2017-2018. 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(generic_statem_complex).
+
+-export([start/1, reply/2, stop/1]).
+
+-export([callback_mode/0, init/1]).
+-export([state1/3, state2/3, state3/3]).
+
+-behaviour(gen_statem).
+
+%% API
+
+start(Data) ->
+    {ok, Pid} = gen_statem:start(?MODULE, Data, []),
+    Pid.
+
+stop(P) ->
+    ok = gen_statem:stop(P).
+
+reply(S, M) ->
+    gen_statem:call(S, {reply, M}, infinity).
+
+%% Implementation
+
+callback_mode() ->
+    [state_functions,state_enter].
+
+init(Data) ->
+    {ok, state1, Data}.
+
+state1(enter, _, Data) ->
+    {keep_state, Data,
+     {state_timeout, 5000, t1}};
+state1({call, _From}, {reply, _M}, Data) ->
+    {next_state, state2, Data,
+     [postpone,{next_event,internal,e}]}.
+
+state2(enter, _, _Data) ->
+    keep_state_and_data;
+state2(internal, e, Data) ->
+    {next_state, state3, Data}.
+
+state3(enter, _, Data) ->
+    {keep_state, Data,
+     {state_timeout, 5000, t3}};
+state3({call, From}, {reply, M}, Data) ->
+    {next_state, state1, Data,
+     {reply, From, M}}.