diff options
| -rw-r--r-- | lib/stdlib/src/dets_v8.erl | 2 | ||||
| -rw-r--r-- | lib/stdlib/src/dets_v9.erl | 5 | ||||
| -rw-r--r-- | lib/stdlib/test/dets_SUITE.erl | 39 |
3 files changed, 43 insertions, 3 deletions
diff --git a/lib/stdlib/src/dets_v8.erl b/lib/stdlib/src/dets_v8.erl index 1f9f84cd27..af36958c1c 100644 --- a/lib/stdlib/src/dets_v8.erl +++ b/lib/stdlib/src/dets_v8.erl @@ -1074,6 +1074,8 @@ wl([], _Type, Del, Lookup, I, Objs) -> [{Del, Lookup, Objs} | I]. %% -> {NewHead, ok} | {NewHead, Error} +may_grow(Head, 0, once) -> + {Head, ok}; may_grow(Head, _N, _How) when Head#head.fixed =/= false -> {Head, ok}; may_grow(#head{access = read}=Head, _N, _How) -> diff --git a/lib/stdlib/src/dets_v9.erl b/lib/stdlib/src/dets_v9.erl index 53238e962f..132af01f79 100644 --- a/lib/stdlib/src/dets_v9.erl +++ b/lib/stdlib/src/dets_v9.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2001-2009. All Rights Reserved. +%% Copyright Ericsson AB 2001-2010. 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 @@ -1908,6 +1908,9 @@ write_cache(Head) -> end. %% -> {NewHead, ok} | {NewHead, Error} +may_grow(Head, 0, once) -> + %% Do not re-hash if there is a chance that the file is not dirty. + {Head, ok}; may_grow(Head, _N, _How) when Head#head.fixed =/= false -> {Head, ok}; may_grow(#head{access = read}=Head, _N, _How) -> diff --git a/lib/stdlib/test/dets_SUITE.erl b/lib/stdlib/test/dets_SUITE.erl index a1f70dc27d..8b18ef5664 100644 --- a/lib/stdlib/test/dets_SUITE.erl +++ b/lib/stdlib/test/dets_SUITE.erl @@ -50,7 +50,8 @@ otp_4208/1, otp_4989/1, many_clients/1, otp_4906/1, otp_5402/1, simultaneous_open/1, insert_new/1, repair_continuation/1, otp_5487/1, otp_6206/1, otp_6359/1, otp_4738/1, otp_7146/1, - otp_8070/1, otp_8856/1, otp_8898/1, otp_8899/1, otp_8903/1]). + otp_8070/1, otp_8856/1, otp_8898/1, otp_8899/1, otp_8903/1, + otp_8923/1]). -export([dets_dirty_loop/0]). @@ -108,7 +109,8 @@ all(suite) -> cache_duplicate_bags_v9, otp_4208, otp_4989, many_clients, otp_4906, otp_5402, simultaneous_open, insert_new, repair_continuation, otp_5487, otp_6206, otp_6359, otp_4738, - otp_7146, otp_8070, otp_8856, otp_8898, otp_8899, otp_8903]} + otp_7146, otp_8070, otp_8856, otp_8898, otp_8899, otp_8903, + otp_8923]} end. not_run(suite) -> []; @@ -3805,6 +3807,39 @@ otp_8903(Config) when is_list(Config) -> file:delete(File), ok. +otp_8923(doc) -> + ["OTP-8923. rehash due to lookup after initialization."]; +otp_8923(suite) -> + []; +otp_8923(Config) when is_list(Config) -> + Tab = otp_8923, + File = filename(Tab, Config), + %% Create a file with more than 256 keys: + file:delete(File), + Bin = list_to_binary([ 0 || _ <- lists:seq(1, 400) ]), + BigBin = list_to_binary([ 0 ||_ <- lists:seq(1, 4000)]), + Ets = ets:new(temp, [{keypos,1}]), + ?line [ true = ets:insert(Ets, {C,Bin}) || C <- lists:seq(1, 700) ], + ?line true = ets:insert(Ets, {helper_data,BigBin}), + ?line true = ets:insert(Ets, {prim_btree,BigBin}), + ?line true = ets:insert(Ets, {sec_btree,BigBin}), + %% Note: too few slots; re-hash will take place + ?line {ok, Tab} = dets:open_file(Tab, [{file,File}]), + ?line Tab = ets:to_dets(Ets, Tab), + ?line ok = dets:close(Tab), + ?line true = ets:delete(Ets), + + ?line {ok,Ref} = dets:open_file(File), + ?line [{1,_}] = dets:lookup(Ref, 1), + ?line ok = dets:close(Ref), + + ?line {ok,Ref2} = dets:open_file(File), + ?line [{helper_data,_}] = dets:lookup(Ref2, helper_data), + ?line ok = dets:close(Ref2), + + file:delete(File), + ok. + %% %% Parts common to several test cases %% |