diff options
Diffstat (limited to 'lib/stdlib/test/ets_SUITE.erl')
| -rw-r--r-- | lib/stdlib/test/ets_SUITE.erl | 79 |
1 files changed, 78 insertions, 1 deletions
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl index 1a8260b041..5b7a4eca55 100644 --- a/lib/stdlib/test/ets_SUITE.erl +++ b/lib/stdlib/test/ets_SUITE.erl @@ -41,7 +41,7 @@ -export([t_delete_object/1, t_init_table/1, t_whitebox/1, select_bound_chunk/1, t_delete_all_objects/1, t_insert_list/1, t_test_ms/1, - t_select_delete/1,t_select_replace/1,t_ets_dets/1]). + t_select_delete/1,t_select_replace/1,t_select_replace_next_bug/1,t_ets_dets/1]). -export([ordered/1, ordered_match/1, interface_equality/1, fixtable_next/1, fixtable_insert/1, rename/1, rename_unnamed/1, evil_rename/1, @@ -58,6 +58,7 @@ -export([otp_5340/1]). -export([otp_6338/1]). -export([otp_6842_select_1000/1]). +-export([select_mbuf_trapping/1]). -export([otp_7665/1]). -export([meta_wb/1]). -export([grow_shrink/1, grow_pseudo_deleted/1, shrink_pseudo_deleted/1]). @@ -122,9 +123,11 @@ all() -> select_bound_chunk, t_init_table, t_whitebox, t_delete_all_objects, t_insert_list, t_test_ms, t_select_delete, t_select_replace, + t_select_replace_next_bug, t_ets_dets, memory, t_select_reverse, t_bucket_disappears, select_fail, t_insert_new, t_repair_continuation, otp_5340, otp_6338, otp_6842_select_1000, otp_7665, + select_mbuf_trapping, otp_8732, meta_wb, grow_shrink, grow_pseudo_deleted, shrink_pseudo_deleted, {group, meta_smp}, smp_insert, smp_fixed_delete, smp_unfix_fix, smp_select_replace, @@ -1373,6 +1376,25 @@ t_select_replace(Config) when is_list(Config) -> verify_etsmem(EtsMem). +%% OTP-15346: Bug caused select_replace of bound key to corrupt static stack +%% used by ets:next and ets:prev. +t_select_replace_next_bug(Config) when is_list(Config) -> + T = ets:new(k, [ordered_set]), + [ets:insert(T, {I, value}) || I <- lists:seq(1,10)], + 1 = ets:first(T), + + %% Make sure select_replace does not leave pointer + %% to deallocated {2,value} in static stack. + MS = [{{2,value}, [], [{{2,"new_value"}}]}], + 1 = ets:select_replace(T, MS), + + %% This would crash or give wrong result at least on DEBUG emulator + %% where deallocated memory is overwritten. + 2 = ets:next(T, 1), + + ets:delete(T). + + %% Test that partly bound keys gives faster matches. partly_bound(Config) when is_list(Config) -> case os:type() of @@ -5022,6 +5044,61 @@ otp_6338(Config) when is_list(Config) -> [[4839,recv]] = ets:match(T,{[{sbm,ppb2_bs12@blade_0_8},'$1'],'$2'}), ets:delete(T). +%% OTP-15660: Verify select not doing excessive trapping +%% when process have mbuf heap fragments. +select_mbuf_trapping(Config) when is_list(Config) -> + select_mbuf_trapping_do(set), + select_mbuf_trapping_do(ordered_set). + +select_mbuf_trapping_do(Type) -> + T = ets:new(xxx, [Type]), + NKeys = 50, + [ets:insert(T, {K, value}) || K <- lists:seq(1,NKeys)], + + {priority, Prio} = process_info(self(), priority), + Tracee = self(), + [SchedTracer] + = start_loopers(1, Prio, + fun (SC) -> + receive + {trace, Tracee, out, _} -> + SC+1; + done -> + Tracee ! {schedule_count, SC}, + exit(normal) + end + end, + 0), + + erlang:garbage_collect(), + 1 = erlang:trace(self(), true, [running,{tracer,SchedTracer}]), + + %% Artificially create an mbuf heap fragment + MbufTerm = "Frag me up", + MbufTerm = erts_debug:set_internal_state(mbuf, MbufTerm), + + Keys = ets:select(T, [{{'$1', value}, [], ['$1']}]), + NKeys = length(Keys), + + 1 = erlang:trace(self(), false, [running]), + Ref = erlang:trace_delivered(Tracee), + receive + {trace_delivered, Tracee, Ref} -> + SchedTracer ! done + end, + receive + {schedule_count, N} -> + io:format("~p context switches: ~p", [Type,N]), + if + N < 3 -> ok; + true -> ct:fail(failed) + end + end, + true = ets:delete(T), + ok. + + + %% Elements could come in the wrong order in a bag if a rehash occurred. otp_5340(Config) when is_list(Config) -> repeat_for_opts(fun otp_5340_do/1). |