diff options
Diffstat (limited to 'lib/mnesia/test/mnesia_isolation_test.erl')
| -rw-r--r-- | lib/mnesia/test/mnesia_isolation_test.erl | 100 |
1 files changed, 77 insertions, 23 deletions
diff --git a/lib/mnesia/test/mnesia_isolation_test.erl b/lib/mnesia/test/mnesia_isolation_test.erl index d57f976d1f..4dd0c01d05 100644 --- a/lib/mnesia/test/mnesia_isolation_test.erl +++ b/lib/mnesia/test/mnesia_isolation_test.erl @@ -3,16 +3,17 @@ %% %% Copyright Ericsson AB 1997-2013. All Rights Reserved. %% -%% The contents of this file are subject to the Erlang Public License, -%% Version 1.1, (the "License"); you may not use this file except in -%% compliance with the License. You should have received a copy of the -%% Erlang Public License along with this software. If not, it can be -%% retrieved online at http://www.erlang.org/. -%% -%% Software distributed under the License is distributed on an "AS IS" -%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See -%% the License for the specific language governing rights and limitations -%% under the License. +%% 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% %% @@ -38,7 +39,7 @@ groups() -> [{locking, [], [no_conflict, simple_queue_conflict, advanced_queue_conflict, simple_deadlock_conflict, - advanced_deadlock_conflict, lock_burst, + advanced_deadlock_conflict, schema_deadlock, lock_burst, {group, sticky_locks}, {group, unbound_locking}, {group, admin_conflict}, nasty]}, {sticky_locks, [], [basic_sticky_functionality]}, @@ -147,20 +148,32 @@ simple_queue_conflict(Config) when is_list(Config) -> fun_loop(Fun, AllSharedLocks, OneExclusiveLocks), ok. -wait_for_lock(Pid, _Nodes, 0) -> +wait_for_lock(Pid, Nodes, Retry) -> + wait_for_lock(Pid, Nodes, Retry, queue). + +wait_for_lock(Pid, _Nodes, 0, queue) -> Queue = mnesia:system_info(lock_queue), ?error("Timeout while waiting for lock on Pid ~p in queue ~p~n", [Pid, Queue]); -wait_for_lock(Pid, Nodes, N) -> - rpc:multicall(Nodes, sys, get_status, [mnesia_locker]), - List = [rpc:call(Node, mnesia, system_info, [lock_queue]) || Node <- Nodes], +wait_for_lock(Pid, _Nodes, 0, held) -> + Held = mnesia:system_info(held_locks), + ?error("Timeout while waiting for lock on Pid ~p (held) ~p~n", [Pid, Held]); +wait_for_lock(Pid, Nodes, N, Where) -> + rpc:multicall(Nodes, sys, get_status, [mnesia_locker]), + List = case Where of + queue -> + [rpc:call(Node, mnesia, system_info, [lock_queue]) || Node <- Nodes]; + held -> + [rpc:call(Node, mnesia, system_info, [held_locks]) || Node <- Nodes] + end, Q = lists:append(List), - check_q(Pid, Q, Nodes, N). + check_q(Pid, Q, Nodes, N, Where). -check_q(Pid, [{_Oid, _Op, Pid, _Tid, _WFT} | _Tail], _N, _Count) -> ok; -check_q(Pid, [_ | Tail], N, Count) -> check_q(Pid, Tail, N, Count); -check_q(Pid, [], N, Count) -> - timer:sleep(500), - wait_for_lock(Pid, N, Count - 1). +check_q(Pid, [{_Oid, _Op, Pid, _Tid, _WFT} | _Tail], _N, _Count, _Where) -> ok; +check_q(Pid, [{_Oid, _Op, {tid,_,Pid}} | _Tail], _N, _Count, _Where) -> ok; +check_q(Pid, [_ | Tail], N, Count, Where) -> check_q(Pid, Tail, N, Count, Where); +check_q(Pid, [], N, Count, Where) -> + timer:sleep(200), + wait_for_lock(Pid, N, Count - 1, Where). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -269,6 +282,43 @@ advanced_deadlock_conflict(Config) when is_list(Config) -> ?match([], mnesia:system_info(lock_queue)), ok. +%% Verify (and regression test) deadlock in del_table_copy(schema, Node) +schema_deadlock(Config) when is_list(Config) -> + Ns = [Node1, Node2] = ?acquire_nodes(2, Config), + ?match({atomic, ok}, mnesia:create_table(a, [{disc_copies, Ns}])), + ?match({atomic, ok}, mnesia:create_table(b, [{disc_copies, Ns}])), + + Tester = self(), + + Deadlocker = fun() -> + mnesia:write({a,1,1}), %% grab write lock on A + receive + continue -> + mnesia:write({b,1,1}), %% grab write lock on B + end_trans + end + end, + + ?match(stopped, rpc:call(Node2, mnesia, stop, [])), + timer:sleep(500), %% Let Node1 reconfigure + sys:get_status(mnesia_monitor), + + DoingTrans = spawn_link(fun() -> Tester ! {self(),mnesia:transaction(Deadlocker)} end), + wait_for_lock(DoingTrans, [Node1], 10, held), + %% Will grab write locks on schema, a, and b + DoingSchema = spawn_link(fun() -> Tester ! {self(), mnesia:del_table_copy(schema, Node2)} end), + timer:sleep(500), %% Let schema trans start, and try to grab locks + DoingTrans ! continue, + + ?match(ok, receive {DoingTrans, {atomic, end_trans}} -> ok after 5000 -> timeout end), + ?match(ok, receive {DoingSchema, {atomic, ok}} -> ok after 5000 -> timeout end), + + sys:get_status(whereis(mnesia_locker)), % Explicit sync, release locks is async + ?match([], mnesia:system_info(held_locks)), + ?match([], mnesia:system_info(lock_queue)), + ok. + + one_oid(Tab) -> {Tab, 1}. other_oid(Tab) -> {Tab, 2}. @@ -1126,7 +1176,9 @@ update_shared(Tab, Me, Acc) -> 0 -> case mnesia:transaction(Update) of {atomic, {ok,Term,W2}} -> - io:format("~p:~p:(~p,~p) ~w@~w~n", [erlang:now(),node(),Me,Acc,Term,W2]), + io:format("~p:~p:(~p,~p) ~w@~w~n", + [erlang:unique_integer([monotonic,positive]), + node(),Me,Acc,Term,W2]), update_shared(Tab, Me, Acc+1); Else -> ?error("Trans failed on ~p with ~p~n" @@ -1584,7 +1636,8 @@ write_shadows(Config) when is_list(Config) -> ?match([RecA2], mnesia:read({Tab, a})), ?match([RecA2], mnesia:wread({Tab, a})), - ?match([RecA2], mnesia:match_object(PatA2)), %% delete shadow old but not new write - is the new value visable + ?match([], mnesia:match_object(PatA1)), %% delete shadow old but not new write + ?match([RecA2], mnesia:match_object(PatA2)), %% is the new value visable ?match([a], mnesia:all_keys(Tab)), ?match([RecA2], mnesia:index_match_object(PatA2, ValPos)), @@ -1643,6 +1696,7 @@ delete_shadows(Config) when is_list(Config) -> ?match([RecA2], mnesia:read({Tab, a})), ?match([RecA2], mnesia:wread({Tab, a})), + ?match([], mnesia:match_object(PatA1)), ?match([RecA2], mnesia:match_object(PatA2)), ?match([a], mnesia:all_keys(Tab)), ?match([RecA2], mnesia:index_match_object(PatA2, ValPos)), |