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-rw-r--r--lib/stdlib/src/ets.erl140
1 files changed, 103 insertions, 37 deletions
diff --git a/lib/stdlib/src/ets.erl b/lib/stdlib/src/ets.erl
index 93c4f59896..847def2fd8 100644
--- a/lib/stdlib/src/ets.erl
+++ b/lib/stdlib/src/ets.erl
@@ -3,16 +3,17 @@
%%
%% Copyright Ericsson AB 1996-2014. 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/.
+%% 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
%%
-%% 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.
+%% 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%
%%
@@ -71,7 +72,8 @@
rename/2, safe_fixtable/2, select/1, select/2, select/3,
select_count/2, select_delete/2, select_reverse/1,
select_reverse/2, select_reverse/3, setopts/2, slot/2,
- update_counter/3, update_element/3]).
+ take/2,
+ update_counter/3, update_counter/4, update_element/3]).
-spec all() -> [Tab] when
Tab :: tab().
@@ -133,7 +135,9 @@ give_away(_, _, _) ->
| {owner, pid()}
| {protection, access()}
| {size, non_neg_integer()}
- | {type, type()}.
+ | {type, type()}
+ | {write_concurrency, boolean()}
+ | {read_concurrency, boolean()}.
info(_) ->
erlang:nif_error(undef).
@@ -142,7 +146,8 @@ info(_) ->
Tab :: tab(),
Item :: compressed | fixed | heir | keypos | memory
| name | named_table | node | owner | protection
- | safe_fixed | size | stats | type,
+ | safe_fixed | size | stats | type
+ | write_concurrency | read_concurrency,
Value :: term().
info(_, _) ->
@@ -400,6 +405,14 @@ setopts(_, _) ->
slot(_, _) ->
erlang:nif_error(undef).
+-spec take(Tab, Key) -> [Object] when
+ Tab :: tab(),
+ Key :: term(),
+ Object :: tuple().
+
+take(_, _) ->
+ erlang:nif_error(undef).
+
-spec update_counter(Tab, Key, UpdateOp) -> Result when
Tab :: tab(),
Key :: term(),
@@ -427,6 +440,38 @@ slot(_, _) ->
update_counter(_, _, _) ->
erlang:nif_error(undef).
+-spec update_counter(Tab, Key, UpdateOp, Default) -> Result when
+ Tab :: tab(),
+ Key :: term(),
+ UpdateOp :: {Pos, Incr}
+ | {Pos, Incr, Threshold, SetValue},
+ Pos :: integer(),
+ Incr :: integer(),
+ Threshold :: integer(),
+ SetValue :: integer(),
+ Result :: integer(),
+ Default :: tuple();
+ (Tab, Key, [UpdateOp], Default) -> [Result] when
+ Tab :: tab(),
+ Key :: term(),
+ UpdateOp :: {Pos, Incr}
+ | {Pos, Incr, Threshold, SetValue},
+ Pos :: integer(),
+ Incr :: integer(),
+ Threshold :: integer(),
+ SetValue :: integer(),
+ Result :: integer(),
+ Default :: tuple();
+ (Tab, Key, Incr, Default) -> Result when
+ Tab :: tab(),
+ Key :: term(),
+ Incr :: integer(),
+ Result :: integer(),
+ Default :: tuple().
+
+update_counter(_, _, _, _) ->
+ erlang:nif_error(undef).
+
-spec update_element(Tab, Key, ElementSpec :: {Pos, Value}) -> boolean() when
Tab :: tab(),
Key :: term(),
@@ -695,7 +740,8 @@ do_filter(Tab, Key, F, A, Ack) ->
-record(filetab_options,
{
object_count = false :: boolean(),
- md5sum = false :: boolean()
+ md5sum = false :: boolean(),
+ sync = false :: boolean()
}).
-spec tab2file(Tab, Filename) -> 'ok' | {'error', Reason} when
@@ -710,7 +756,7 @@ tab2file(Tab, File) ->
Tab :: tab(),
Filename :: file:name(),
Options :: [Option],
- Option :: {'extended_info', [ExtInfo]},
+ Option :: {'extended_info', [ExtInfo]} | {'sync', boolean()},
ExtInfo :: 'md5sum' | 'object_count',
Reason :: term().
@@ -791,6 +837,15 @@ tab2file(Tab, File, Options) ->
List ->
LogFun(NewState1,[['$end_of_table',List]])
end,
+ case FtOptions#filetab_options.sync of
+ true ->
+ case disk_log:sync(Name) of
+ ok -> ok;
+ {error, Reason2} -> throw(Reason2)
+ end;
+ false ->
+ ok
+ end,
disk_log:close(Name)
catch
throw:TReason ->
@@ -843,23 +898,24 @@ md5terms(State, [H|T]) ->
{FinState, [B|TL]}.
parse_ft_options(Options) when is_list(Options) ->
- {Opt,Rest} = case (catch lists:keytake(extended_info,1,Options)) of
- false ->
- {[],Options};
- {value,{extended_info,L},R} when is_list(L) ->
- {L,R}
- end,
- case Rest of
- [] ->
- parse_ft_info_options(#filetab_options{}, Opt);
- Other ->
- throw({unknown_option, Other})
- end;
-parse_ft_options(Malformed) ->
+ {ok, parse_ft_options(Options, #filetab_options{}, false)}.
+
+parse_ft_options([], FtOpt, _) ->
+ FtOpt;
+parse_ft_options([{sync,true} | Rest], FtOpt, EI) ->
+ parse_ft_options(Rest, FtOpt#filetab_options{sync = true}, EI);
+parse_ft_options([{sync,false} | Rest], FtOpt, EI) ->
+ parse_ft_options(Rest, FtOpt, EI);
+parse_ft_options([{extended_info,L} | Rest], FtOpt0, false) ->
+ FtOpt1 = parse_ft_info_options(FtOpt0, L),
+ parse_ft_options(Rest, FtOpt1, true);
+parse_ft_options([Other | _], _, _) ->
+ throw({unknown_option, Other});
+parse_ft_options(Malformed, _, _) ->
throw({malformed_option, Malformed}).
parse_ft_info_options(FtOpt,[]) ->
- {ok,FtOpt};
+ FtOpt;
parse_ft_info_options(FtOpt,[object_count | T]) ->
parse_ft_info_options(FtOpt#filetab_options{object_count = true}, T);
parse_ft_info_options(FtOpt,[md5sum | T]) ->
@@ -1253,18 +1309,30 @@ create_tab(I, TabArg) ->
{name, Name} = lists:keyfind(name, 1, I),
{type, Type} = lists:keyfind(type, 1, I),
{protection, P} = lists:keyfind(protection, 1, I),
- {named_table, Val} = lists:keyfind(named_table, 1, I),
{keypos, _Kp} = Keypos = lists:keyfind(keypos, 1, I),
{size, Sz} = lists:keyfind(size, 1, I),
- Comp = case lists:keyfind(compressed, 1, I) of
- {compressed, true} -> [compressed];
- {compressed, false} -> [];
- false -> []
- end,
+ L1 = [Type, P, Keypos],
+ L2 = case lists:keyfind(named_table, 1, I) of
+ {named_table, true} -> [named_table | L1];
+ {named_table, false} -> L1
+ end,
+ L3 = case lists:keyfind(compressed, 1, I) of
+ {compressed, true} -> [compressed | L2];
+ {compressed, false} -> L2;
+ false -> L2
+ end,
+ L4 = case lists:keyfind(write_concurrency, 1, I) of
+ {write_concurrency, _}=Wcc -> [Wcc | L3];
+ _ -> L3
+ end,
+ L5 = case lists:keyfind(read_concurrency, 1, I) of
+ {read_concurrency, _}=Rcc -> [Rcc | L4];
+ false -> L4
+ end,
case TabArg of
[] ->
try
- Tab = ets:new(Name, [Type, P, Keypos] ++ named_table(Val) ++ Comp),
+ Tab = ets:new(Name, L5),
{ok, Tab, Sz}
catch _:_ ->
throw(cannot_create_table)
@@ -1273,8 +1341,6 @@ create_tab(I, TabArg) ->
{ok, TabArg, Sz}
end.
-named_table(true) -> [named_table];
-named_table(false) -> [].
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% tabfile_info/1 reads the head information in an ets table dumped to
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-11 21:41:45 +0000