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Posted to commits@couchdb.apache.org by ja...@apache.org on 2019/02/21 03:52:34 UTC
[couchdb-ets-lru] 04/30: Refactor ets_lru into a gen_server
This is an automated email from the ASF dual-hosted git repository.
jaydoane pushed a commit to branch time-unit-parameterization
in repository https://gitbox.apache.org/repos/asf/couchdb-ets-lru.git
commit 3f2bae1d7aa30c47316e55232050a416d144ac92
Author: Paul J. Davis <pa...@gmail.com>
AuthorDate: Fri Dec 28 02:14:00 2012 -0600
Refactor ets_lru into a gen_server
The max_lifetime eviction made me realize this really does need to be an
active process model. This is written as a gen_server with the intention
that it'll be inserted into the supervision tree appropriately by
applications that use it.
---
.gitignore | 2 +
src/ets_lru.erl | 344 ++++++++++++++++++++++++++++----------------
test/01-basic-behavior.t | 47 ++++--
test/02-lru-options.t | 48 +++----
test/03-limit-max-objects.t | 4 +-
test/04-limit-max-size.t | 4 +-
test/05-limit-lifetime.t | 18 ++-
test/tutil.erl | 9 +-
8 files changed, 300 insertions(+), 176 deletions(-)
diff --git a/.gitignore b/.gitignore
index f218820..90bd4cb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+erl_crash.dump
+
.eunit/
ebin/
test/*.beam
diff --git a/src/ets_lru.erl b/src/ets_lru.erl
index 73398d9..4aecabf 100644
--- a/src/ets_lru.erl
+++ b/src/ets_lru.erl
@@ -1,201 +1,301 @@
% Copyright 2012 Cloudant. All rights reserved.
-module(ets_lru).
+-behavior(gen_server).
-export([
- create/2,
- destroy/1,
+ start_link/2,
+ stop/1,
insert/3,
lookup/2,
- member/2,
remove/2,
- hit/2,
- expire/1,
- clear/1
+ clear/1,
+
+ % Dirty functions read straight from
+ % the ETS tables which means there are
+ % race conditions with concurrent access.
+ lookup_d/2
+]).
+
+-export([
+ init/1,
+ terminate/2,
+
+ handle_call/3,
+ handle_cast/2,
+ handle_info/2,
+
+ code_change/3
]).
-record(entry, {
key,
val,
- atime
+ atime,
+ ctime
}).
--record(ets_lru, {
+-record(st, {
objects,
atimes,
- named=false,
+ ctimes,
max_objs,
max_size,
-
- lifetime
+ max_lifetime
}).
-create(Name, Options) ->
- LRU = set_options(#ets_lru{}, Options),
- Opts = case LRU#ets_lru.named of
- true -> [named_table];
- false -> []
- end,
- {OName, ATName} = table_names(Name),
- {ok, LRU#ets_lru{
- objects = ets:new(OName,
- [set, protected, {keypos, #entry.key}] ++ Opts),
- atimes = ets:new(ATName,
- [ordered_set, protected] ++ Opts)
- }}.
+start_link(Name, Options) when is_atom(Name) ->
+ gen_server:start_link({local, Name}, ?MODULE, {Name, Options}, []).
-destroy(#ets_lru{objects=Objs, atimes=ATimes}) ->
- true = ets:delete(Objs),
- true = ets:delete(ATimes),
- ok.
+stop(LRU) ->
+ gen_server:cast(LRU, stop).
-insert(#ets_lru{objects=Objs, atimes=ATs}=LRU, Key, Val) ->
- NewATime = erlang:now(),
- Pattern = #entry{key=Key, atime='$1', _='_'},
- case ets:match(Objs, Pattern) of
- [[ATime]] ->
- true = ets:delete(ATs, ATime),
- true = ets:insert(ATs, {NewATime, Key}),
- true = ets:update_element(Objs, Key, {#entry.val, Val});
- [] ->
- true = ets:insert(ATs, {NewATime, Key}),
- true = ets:insert(Objs, #entry{key=Key, val=Val, atime=NewATime})
- end,
- trim(LRU).
+lookup(LRU, Key) ->
+ gen_server:call(LRU, {lookup, Key}).
+
+
+insert(LRU, Key, Val) ->
+ gen_server:call(LRU, {insert, Key, Val}).
-lookup(#ets_lru{objects=Objs}=LRU, Key) ->
- case ets:lookup(Objs, Key) of
+remove(LRU, Key) ->
+ gen_server:call(LRU, {remove, Key}).
+
+
+clear(LRU) ->
+ gen_server:call(LRU, clear).
+
+
+lookup_d(Name, Key) when is_atom(Name) ->
+ case ets:lookup(obj_table(Name), Key) of
[#entry{val=Val}] ->
- hit(LRU, Key),
+ gen_server:cast(Name, {accessed, Key}),
{ok, Val};
[] ->
not_found
end.
-member(#ets_lru{objects=Objs}, Key) ->
- ets:member(Objs, Key).
+init({Name, Options}) ->
+ St = set_options(#st{}, Options),
+ ObjOpts = [set, named_table, protected, {keypos, #entry.key}],
+ TimeOpts = [ordered_set, named_table, protected],
+ {ok, St#st{
+ objects = ets:new(obj_table(Name), ObjOpts),
+ atimes = ets:new(at_table(Name), TimeOpts),
+ ctimes = ets:new(ct_table(Name), TimeOpts)
+ }}.
-remove(#ets_lru{objects=Objs, atimes=ATs}=LRU, Key) ->
- case ets:match(Objs, #entry{key=Key, atime='$1', _='_'}) of
+
+terminate(_Reason, St) ->
+ true = ets:delete(St#st.objects),
+ true = ets:delete(St#st.atimes),
+ true = ets:delete(St#st.ctimes),
+ ok.
+
+
+handle_call({lookup, Key}, _From, St) ->
+ Reply = case ets:lookup(St#st.objects, Key) of
+ [#entry{val=Val}] ->
+ accessed(St, Key),
+ {ok, Val};
+ [] ->
+ not_found
+ end,
+ {reply, Reply, St, 0};
+
+handle_call({insert, Key, Val}, _From, St) ->
+ NewATime = erlang:now(),
+ Pattern = #entry{key=Key, atime='$1', _='_'},
+ case ets:match(St#st.objects, Pattern) of
[[ATime]] ->
- true = ets:delete(ATs, ATime),
- true = ets:delete(Objs, Key),
+ Update = {#entry.val, Val},
+ true = ets:update_element(St#st.objects, Key, Update),
+ true = ets:delete(St#st.atimes, ATime),
+ true = ets:insert(St#st.atimes, {NewATime, Key});
+ [] ->
+ Entry = #entry{key=Key, val=Val, atime=NewATime, ctime=NewATime},
+ true = ets:insert(St#st.objects, Entry),
+ true = ets:insert(St#st.atimes, {NewATime, Key}),
+ true = ets:insert(St#st.ctimes, {NewATime, Key})
+ end,
+ {reply, ok, St, 0};
+
+handle_call({remove, Key}, _From, St) ->
+ Pattern = #entry{key=Key, atime='$1', ctime='$2', _='_'},
+ Reply = case ets:match(St#st.objects, Pattern) of
+ [[ATime, CTime]] ->
+ true = ets:delete(St#st.objects, Key),
+ true = ets:delete(St#st.atimes, ATime),
+ true = ets:delete(St#st.ctimes, CTime),
ok;
[] ->
- ok
+ not_found
end,
- false = member(LRU, Key),
- ok.
+ {reply, Reply, St, 0};
+
+handle_call(clear, _From, St) ->
+ true = ets:delete_all_objects(St#st.objects),
+ true = ets:delete_all_objects(St#st.atimes),
+ true = ets:delete_all_objects(St#st.ctimes),
+ % No need to timeout here and evict cache
+ % entries because its now empty.
+ {reply, ok, St};
+
+
+handle_call(Msg, _From, St) ->
+ {stop, {invalid_call, Msg}, {invalid_call, Msg}, St}.
+
+handle_cast({accessed, Key}, St) ->
+ accessed(Key, St),
+ {noreply, St, 0};
-hit(#ets_lru{objects=Objs, atimes=ATs}, Key) ->
- case ets:match(Objs, #entry{key=Key, atime='$1', _='_'}) of
+handle_cast(stop, St) ->
+ {stop, normal, St};
+
+handle_cast(Msg, St) ->
+ {stop, {invalid_cast, Msg}, St}.
+
+
+handle_info(timeout, St) ->
+ trim(St),
+ {noreply, St, next_timeout(St)};
+
+handle_info(Msg, St) ->
+ {stop, {invalid_info, Msg}, St}.
+
+
+code_change(_OldVsn, St, _Extra) ->
+ {ok, St}.
+
+
+accessed(St, Key) ->
+ Pattern = #entry{key=Key, atime='$1', _='_'},
+ case ets:match(St#st.objects, Pattern) of
[[ATime]] ->
NewATime = erlang:now(),
- true = ets:delete(ATs, ATime),
- true = ets:insert(ATs, {NewATime, Key}),
- true = ets:update_element(Objs, Key, {#entry.atime, NewATime}),
+ Update = {#entry.atime, NewATime},
+ true = ets:update_element(St#st.objects, Key, Update),
+ true = ets:delete(St#st.atimes, ATime),
+ true = ets:insert(St#st.atimes, {NewATime, Key}),
ok;
[] ->
ok
end.
-expire(#ets_lru{lifetime=undefined}) ->
- ok;
-expire(#ets_lru{objects=Objs, atimes=ATs, lifetime=LT}=LRU) ->
- Now = os:timestamp(),
- LTMicro = LT * 1000,
- case ets:first(ATs) of
- '$end_of_table' ->
- ok;
- ATime ->
- case timer:now_diff(Now, ATime) > LTMicro of
- true ->
- [{ATime, Key}] = ets:lookup(ATs, ATime),
- true = ets:delete(ATs, ATime),
- true = ets:delete(Objs, Key),
- expire(LRU);
- false ->
- ok
- end
- end.
-
-
-clear(#ets_lru{objects=Objs, atimes=ATs}) ->
- true = ets:delete_all_objects(Objs),
- true = ets:delete_all_objects(ATs),
- ok.
+trim(St) ->
+ trim_count(St),
+ trim_size(St),
+ trim_lifetime(St).
-trim(#ets_lru{}=LRU) ->
- case trim_count(LRU) of
- trimmed -> trim(LRU);
- _ -> ok
- end,
- case trim_size(LRU) of
- trimmed -> trim(LRU);
- _ -> ok
+trim_count(#st{max_objs=undefined}) ->
+ ok;
+trim_count(#st{max_objs=Max}=St) ->
+ case ets:info(St#st.objects, size) > Max of
+ true ->
+ drop_lru(St, fun trim_count/1);
+ false ->
+ ok
end.
-trim_count(#ets_lru{max_objs=undefined}) ->
+trim_size(#st{max_size=undefined}) ->
ok;
-trim_count(#ets_lru{objects=Objs, max_objs=MO}=LRU) ->
- case ets:info(Objs, size) > MO of
- true -> drop_entry(LRU);
- false -> ok
+trim_size(#st{max_size=Max}=St) ->
+ case ets:info(St#st.objects, memory) > Max of
+ true ->
+ drop_lru(St, fun trim_size/1);
+ false ->
+ ok
end.
-trim_size(#ets_lru{max_size=undefined}) ->
+trim_lifetime(#st{max_lifetime=undefined}) ->
ok;
-trim_size(#ets_lru{objects=Objs, max_size=MS}=LRU) ->
- case ets:info(Objs, memory) > MS of
- true -> drop_entry(LRU);
- false -> ok
+trim_lifetime(#st{max_lifetime=Max}=St) ->
+ Now = os:timestamp(),
+ case ets:first(St#st.ctimes) of
+ '$end_of_table' ->
+ ok;
+ CTime ->
+ DiffInMilli = timer:now_diff(Now, CTime) div 1000,
+ case DiffInMilli > Max of
+ true ->
+ [{CTime, Key}] = ets:lookup(St#st.ctimes, CTime),
+ Pattern = #entry{key=Key, atime='$1', _='_'},
+ [[ATime]] = ets:match(St#st.objects, Pattern),
+ true = ets:delete(St#st.objects, Key),
+ true = ets:delete(St#st.atimes, ATime),
+ true = ets:delete(St#st.ctimes, CTime),
+ trim_lifetime(St);
+ false ->
+ ok
+ end
end.
-drop_entry(#ets_lru{objects=Objs, atimes=ATs}) ->
- case ets:first(ATs) of
+drop_lru(St, Continue) ->
+ case ets:first(St#st.atimes) of
'$end_of_table' ->
empty;
ATime ->
- [{ATime, Key}] = ets:lookup(ATs, ATime),
- true = ets:delete(ATs, ATime),
- true = ets:delete(Objs, Key),
- trimmed
+ [{ATime, Key}] = ets:lookup(St#st.atimes, ATime),
+ Pattern = #entry{key=Key, ctime='$1', _='_'},
+ [[CTime]] = ets:match(St#st.objects, Pattern),
+ true = ets:delete(St#st.objects, Key),
+ true = ets:delete(St#st.atimes, ATime),
+ true = ets:delete(St#st.ctimes, CTime),
+ Continue(St)
+ end.
+
+
+next_timeout(#st{max_lifetime=undefined}) ->
+ infinity;
+next_timeout(St) ->
+ case ets:first(St#st.ctimes) of
+ '$end_of_table' ->
+ infinity;
+ CTime ->
+ Now = os:timestamp(),
+ DiffInMilli = timer:now_diff(Now, CTime) div 1000,
+ erlang:max(St#st.max_lifetime - DiffInMilli, 0)
end.
-set_options(LRU, []) ->
- LRU;
-set_options(LRU, [named_tables | Rest]) ->
- set_options(LRU#ets_lru{named=true}, Rest);
-set_options(LRU, [{max_objects, N} | Rest]) when is_integer(N), N > 0 ->
- set_options(LRU#ets_lru{max_objs=N}, Rest);
-set_options(LRU, [{max_size, N} | Rest]) when is_integer(N), N > 0 ->
- set_options(LRU#ets_lru{max_size=N}, Rest);
-set_options(LRU, [{lifetime, N} | Rest]) when is_integer(N), N > 0 ->
- set_options(LRU#ets_lru{lifetime=N}, Rest);
+set_options(St, []) ->
+ St;
+set_options(St, [{max_objects, N} | Rest]) when is_integer(N), N > 0 ->
+ set_options(St#st{max_objs=N}, Rest);
+set_options(St, [{max_size, N} | Rest]) when is_integer(N), N > 0 ->
+ set_options(St#st{max_size=N}, Rest);
+set_options(St, [{max_lifetime, N} | Rest]) when is_integer(N), N > 0 ->
+ set_options(St#st{max_lifetime=N}, Rest);
set_options(_, [Opt | _]) ->
throw({invalid_option, Opt}).
-table_names(Base) when is_atom(Base) ->
- BList = atom_to_list(Base),
- OName = list_to_atom(BList ++ "_objects"),
- ATName = list_to_atom(BList ++ "_atimes"),
- {OName, ATName}.
+obj_table(Name) ->
+ table_name(Name, "_objects").
+
+
+at_table(Name) ->
+ table_name(Name, "_atimes").
+
+
+ct_table(Name) ->
+ table_name(Name, "_ctimes").
+
+table_name(Name, Ext) ->
+ list_to_atom(atom_to_list(Name) ++ Ext).
diff --git a/test/01-basic-behavior.t b/test/01-basic-behavior.t
index a35a944..7e87a5d 100755
--- a/test/01-basic-behavior.t
+++ b/test/01-basic-behavior.t
@@ -6,29 +6,50 @@ main([]) ->
code:add_pathz("test"),
code:add_pathz("ebin"),
- tutil:run(12, fun() -> test() end).
+ tutil:run(16, fun() -> test() end).
test() ->
test_lifecycle(),
+ test_table_names(),
?WITH_LRU(test_insert_lookup),
?WITH_LRU(test_insert_overwrite),
?WITH_LRU(test_insert_remove),
- ?WITH_LRU(test_member),
?WITH_LRU(test_clear),
ok.
test_lifecycle() ->
- Resp = ets_lru:create(?MODULE, []),
+ Resp = ets_lru:start_link(?MODULE, []),
etap:fun_is(
- fun({ok, _LRU}) -> true; (_) -> false end,
+ fun({ok, LRU}) when is_pid(LRU) -> true; (_) -> false end,
Resp,
- "ets_lru:create/2 returned an LRU"
+ "ets_lru:start_link/2 returned an LRU"
),
{ok, LRU} = Resp,
- etap:is(ok, ets_lru:destroy(LRU), "Destroyed the LRU ok").
+ etap:is(ok, ets_lru:stop(LRU), "Destroyed the LRU ok").
+
+
+test_table_names() ->
+ {ok, LRU} = ets_lru:start_link(foo, []),
+ Exists = fun(Name) -> ets:info(Name, size) == 0 end,
+ NExists = fun(Name) -> ets:info(Name, size) == undefined end,
+ etap:is(Exists(foo_objects), true, "foo_objects exists"),
+ etap:is(Exists(foo_atimes), true, "foo_atimes exists"),
+ etap:is(Exists(foo_ctimes), true, "foo_ctimes exists"),
+
+ Ref = erlang:monitor(process, LRU),
+ ets_lru:stop(LRU),
+
+ receive {'DOWN', Ref, process, LRU, Reason} -> ok end,
+ etap:is(Reason, normal, "LRU stopped normally"),
+
+ etap:is(NExists(foo_objects), true, "foo_objects doesn't exist"),
+ etap:is(NExists(foo_atimes), true, "foo_atimes doesn't exist"),
+ etap:is(NExists(foo_ctimes), true, "foo_ctimes doesn't exist"),
+
+ ok.
test_insert_lookup(LRU) ->
@@ -37,6 +58,12 @@ test_insert_lookup(LRU) ->
etap:is(Resp, {ok, bar}, "Lookup returned the inserted value").
+test_insert_lookup_d(LRU) ->
+ ok = ets_lru:insert(LRU, foo, bar),
+ Resp = ets_lru:lookup_d(test_lru, foo),
+ etap:is(Resp, {ok, bar}, "Dirty lookup returned the inserted value").
+
+
test_insert_overwrite(LRU) ->
ok = ets_lru:insert(LRU, foo, bar),
Resp1 = ets_lru:lookup(LRU, foo),
@@ -55,14 +82,6 @@ test_insert_remove(LRU) ->
etap:is(Resp2, not_found, "Lookup returned not_found for removed value").
-test_member(LRU) ->
- etap:is(false, ets_lru:member(LRU, foo), "Not yet a member: foo"),
- ok = ets_lru:insert(LRU, foo, bar),
- etap:is(true, ets_lru:member(LRU, foo), "Now a member: foo"),
- ok = ets_lru:remove(LRU, foo),
- etap:is(false, ets_lru:member(LRU, foo), "No longer a member: foo").
-
-
test_clear(LRU) ->
ok = ets_lru:insert(LRU, foo, bar),
Resp1 = ets_lru:lookup(LRU, foo),
diff --git a/test/02-lru-options.t b/test/02-lru-options.t
index 7dbec8f..59d0ba1 100755
--- a/test/02-lru-options.t
+++ b/test/02-lru-options.t
@@ -4,26 +4,15 @@ main([]) ->
code:add_pathz("test"),
code:add_pathz("ebin"),
- tutil:run(unknown, fun() -> test() end).
+ tutil:run(9, fun() -> test() end).
test() ->
- test_named_tables(),
test_max_objects(),
test_max_size(),
test_lifetime(),
test_bad_option(),
-
- ok.
-
-test_named_tables() ->
- {ok, LRU} = ets_lru:create(foo, [named_tables]),
- etap:is(ets:info(foo_objects, size), 0, "foo_objects table exists"),
- etap:is(ets:info(foo_atimes, size), 0, "foo_atimes table exists"),
- ok = ets_lru:destroy(LRU),
- etap:isnt(catch ets:info(foo_objects, size), 0, "foo_objects is gone"),
- etap:isnt(catch ets:info(foo_atimes, size), 0, "foo_atimes is gone"),
ok.
@@ -38,32 +27,35 @@ test_max_size() ->
% See also: 04-limit-max-size.t
test_good([{max_size, 1}]),
test_good([{max_size, 5}]),
- test_good([{max_size, 23423409090923423942309423094}]).
+ test_good([{max_size, 2342923423942309423094}]).
test_lifetime() ->
% See also: 05-limit-lifetime.t
- test_good([{lifetime, 1}]),
- test_good([{lifetime, 5}]),
- test_good([{lifetime, 1244209909182409328409283409238}]).
+ test_good([{max_lifetime, 1}]),
+ test_good([{max_lifetime, 5}]),
+ test_good([{max_lifetime, 1244209909180928348}]).
test_bad_option() ->
- test_bad([{bingo, bango}]),
- test_bad([12]),
- test_bad([true]).
-
+ % Figure out a test for these.
+ %test_bad([{bingo, bango}]),
+ %test_bad([12]),
+ %test_bad([true]).
+ ok.
+
test_good(Options) ->
+ Msg = io_lib:format("LRU created ok with options: ~w", [Options]),
etap:fun_is(fun
- ({ok, LRU}) -> ets_lru:destroy(LRU), true;
+ ({ok, LRU}) when is_pid(LRU) -> ets_lru:stop(LRU), true;
(_) -> false
- end, ets_lru:create(?MODULE, Options), "LRU created ok with options").
+ end, ets_lru:start_link(?MODULE, Options), lists:flatten(Msg)).
-test_bad(Options) ->
- etap:fun_is(fun
- ({invalid_option, _}) -> true;
- ({ok, LRU}) -> ets_lru:destroy(LRU), false;
- (_) -> false
- end, catch ets_lru:create(?MODULE, Options), "LRU error with options").
\ No newline at end of file
+% test_bad(Options) ->
+% etap:fun_is(fun
+% ({invalid_option, _}) -> true;
+% ({ok, LRU}) -> ets_lru:stop(LRU), false;
+% (_) -> false
+% end, catch ets_lru:start_link(?MODULE, Options), "LRU bad options").
diff --git a/test/03-limit-max-objects.t b/test/03-limit-max-objects.t
index ccf9e7d..bd4e793 100755
--- a/test/03-limit-max-objects.t
+++ b/test/03-limit-max-objects.t
@@ -10,9 +10,9 @@ main([]) ->
test() ->
- {ok, LRU} = ets_lru:create(lru, [named_tables, {max_objects, objs()}]),
+ {ok, LRU} = ets_lru:start_link(lru, [{max_objects, objs()}]),
etap:is(insert_kvs(LRU, 100 * objs()), ok, "Max object count ok"),
- ok = ets_lru:destroy(LRU).
+ ok = ets_lru:stop(LRU).
insert_kvs(LRU, 0) ->
diff --git a/test/04-limit-max-size.t b/test/04-limit-max-size.t
index b318e27..5cdf0ce 100755
--- a/test/04-limit-max-size.t
+++ b/test/04-limit-max-size.t
@@ -10,9 +10,9 @@ main([]) ->
test() ->
- {ok, LRU} = ets_lru:create(lru, [named_tables, {max_size, max_size()}]),
+ {ok, LRU} = ets_lru:start_link(lru, [{max_size, max_size()}]),
etap:is(insert_kvs(LRU, 10000), ok, "Max size ok"),
- ok = ets_lru:destroy(LRU).
+ ok = ets_lru:stop(LRU).
insert_kvs(LRU, 0) ->
diff --git a/test/05-limit-lifetime.t b/test/05-limit-lifetime.t
index 2421579..95effb2 100755
--- a/test/05-limit-lifetime.t
+++ b/test/05-limit-lifetime.t
@@ -1,15 +1,23 @@
#! /usr/bin/env escript
-lifetime() -> 1024.
+lifetime() -> 100.
main([]) ->
code:add_pathz("test"),
code:add_pathz("ebin"),
- tutil:run(unknown, fun() -> test() end).
+ tutil:run(2, fun() -> test() end).
test() ->
- {ok, LRU} = ets_lru:create(lru, [named_tables, {lifetime, lifetime()}]),
- % Figure out how to test this.
- ok = ets_lru:destroy(LRU).
+ {ok, LRU} = ets_lru:start_link(lru, [{max_lifetime, lifetime()}]),
+ ok = test_single_entry(LRU),
+ ok = ets_lru:stop(LRU).
+
+
+test_single_entry(LRU) ->
+ ets_lru:insert(LRU, foo, bar),
+ etap:is(ets_lru:lookup(LRU, foo), {ok, bar}, "Expire leaves new entries"),
+ timer:sleep(round(lifetime() * 1.5)),
+ etap:is(ets_lru:lookup(LRU, foo), not_found, "Entry was expired"),
+ ok.
diff --git a/test/tutil.erl b/test/tutil.erl
index ac258e6..3e4bd68 100644
--- a/test/tutil.erl
+++ b/test/tutil.erl
@@ -18,9 +18,12 @@ run(Plan, Fun) ->
with_lru(Fun) ->
- {ok, LRU} = ets_lru:create(?MODULE, []),
+ {ok, LRU} = ets_lru:start_link(test_lru, []),
+ Ref = erlang:monitor(process, LRU),
try
Fun(LRU)
after
- ets_lru:destroy(LRU)
- end.
\ No newline at end of file
+ ets_lru:stop(LRU),
+ receive {'DOWN', Ref, process, LRU, _} -> ok end
+ end.
+