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authorBjörn-Egil Dahlberg <[email protected]>2012-01-23 15:16:14 +0100
committerSverker Eriksson <[email protected]>2012-02-21 12:23:02 +0100
commit68c3059a7660605b5f7200b4290905b785a3c604 (patch)
tree72efedd015fd03c91cdcc027c1c149ff31655581
parenta4cb5739b9f3dd88582fdea7a00cbba721fea35d (diff)
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test: parallel_load_check_purge_repeat
* test trivial non-blocking code loading (smoke test)
-rw-r--r--erts/emulator/test/Makefile1
-rw-r--r--erts/emulator/test/code_parallel_load_SUITE.erl137
2 files changed, 138 insertions, 0 deletions
diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile
index a3dcbc4cf3..efa3cd475f 100644
--- a/erts/emulator/test/Makefile
+++ b/erts/emulator/test/Makefile
@@ -47,6 +47,7 @@ MODULES= \
busy_port_SUITE \
call_trace_SUITE \
code_SUITE \
+ code_parallel_load_SUITE \
crypto_SUITE \
ddll_SUITE \
decode_packet_SUITE \
diff --git a/erts/emulator/test/code_parallel_load_SUITE.erl b/erts/emulator/test/code_parallel_load_SUITE.erl
new file mode 100644
index 0000000000..b86b81a953
--- /dev/null
+++ b/erts/emulator/test/code_parallel_load_SUITE.erl
@@ -0,0 +1,137 @@
+%% Copyright (C) 2012 Björn-Egil Dahlberg
+%%
+%% File: code_parallel_load_SUITE.erl
+%% Author: Björn-Egil Dahlberg
+%% Created: 2012-01-19
+-module(code_parallel_load_SUITE).
+-export([
+ all/0,
+ suite/0,
+ init_per_suite/1,
+ end_per_suite/1,
+ init_per_testcase/2,
+ end_per_testcase/2
+ ]).
+
+-export([
+ parallel_load_check_purge_repeat/1
+ ]).
+
+-define(model, my_model).
+-define(interval, 1500).
+-define(number_of_processes, 160).
+-define(passes, 4).
+
+
+-include_lib("test_server/include/test_server.hrl").
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() ->
+ [parallel_load_check_purge_repeat].
+
+
+init_per_suite(Config) ->
+ Config.
+
+end_per_suite(_Config) ->
+ ok.
+
+init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
+ Dog=?t:timetrap(?t:minutes(3)),
+ [{watchdog, Dog}|Config].
+
+end_per_testcase(_Func, Config) ->
+ Dog=?config(watchdog, Config),
+ ?t:timetrap_cancel(Dog).
+
+
+parallel_load_check_purge_repeat(_Conf) ->
+ Ts = [v1,v2,v3,v4,v5,v6],
+ Codes = generate_codes(Ts),
+ setup_code_changer(Codes),
+ ok.
+
+setup_code_changer([{Token,Code}|Cs] = Codes) ->
+ {module, ?model} = erlang:load_module(?model,Code),
+ Pids = setup_checkers(Token,?number_of_processes),
+ code_changer(Cs, Codes, ?interval,Pids,?passes),
+ ok.
+
+code_changer(_, _, _, Pids, 0) ->
+ [exit(Pid, normal) || Pid <- Pids],
+ io:format("done~n"),
+ ok;
+code_changer([], Codes, T, Pids, Ps) ->
+ code_changer(Codes, Codes, T, Pids, Ps - 1);
+code_changer([{Token,Code}|Cs], Codes, T, Pids, Ps) ->
+ receive after T ->
+ io:format("load code with token ~4w : pass ~4w~n", [Token, Ps]),
+ %code:load_binary(?model, ?model, Code),
+ {module, ?model} = erlang:load_module(?model, Code),
+ % this is second time we call load_module for this module
+ % so it should have old code
+ [Pid ! {self(), change, Token} || Pid <- Pids],
+ % should we wait a moment or just blantantly try to check and purge repeatadly?
+ receive after 1 -> ok end,
+ ok = check_and_purge_processes_code(Pids, ?model),
+ code_changer(Cs, Codes, T, Pids, Ps)
+ end.
+
+%% generate code that receives a token, code switches to new code
+%% then matches this token against a literal code token
+%% should be identical
+%% (smoke test for parallel code loading
+generate_codes([]) -> [];
+generate_codes([T|Ts]) ->
+ [{T, generate(?model, [], [
+ format("check(T) -> receive {_Pid, change, T1} -> "
+ " ~w:check(T1)\n"
+ " after 0 -> T = f(), check(T) end.\n", [?model]),
+ format("f() -> ~w.~n", [T])
+ ])} | generate_codes(Ts)].
+
+
+
+%% aux
+
+setup_checkers(_,0) -> [];
+setup_checkers(T,N) -> [spawn_link(fun() -> ?model:check(T) end) | setup_checkers(T, N-1)].
+
+check_and_purge_processes_code(Pids, M) ->
+ check_and_purge_processes_code(Pids, M, []).
+check_and_purge_processes_code([], M, []) ->
+ erlang:purge_module(M),
+ ok;
+check_and_purge_processes_code([], M, Pending) ->
+ io:format("Processes ~w are still executing old code - retrying.~n", [Pending]),
+ check_and_purge_processes_code(Pending, M, []);
+check_and_purge_processes_code([Pid|Pids], M, Pending) ->
+ case erlang:check_process_code(Pid, M) of
+ false ->
+ check_and_purge_processes_code(Pids, M, Pending);
+ true ->
+ check_and_purge_processes_code(Pids, M, [Pid|Pending])
+ end.
+
+
+generate(Module, Attributes, FunStrings) ->
+ FunForms = function_forms(FunStrings),
+ Forms = [
+ {attribute,1,module,Module},
+ {attribute,2,export,[FA || {FA,_} <- FunForms]}
+ ] ++ [{attribute, 3, A, V}|| {A, V} <- Attributes] ++
+ [ Function || {_, Function} <- FunForms],
+ {ok, Module, Bin} = compile:forms(Forms),
+ Bin.
+
+
+function_forms([]) -> [];
+function_forms([S|Ss]) ->
+ {ok, Ts,_} = erl_scan:string(S),
+ {ok, Form} = erl_parse:parse_form(Ts),
+ Fun = element(3, Form),
+ Arity = element(4, Form),
+ [{{Fun,Arity}, Form}|function_forms(Ss)].
+
+format(F,Ts) -> lists:flatten(io_lib:format(F, Ts)).