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author | Matthew Sackman <matthew@lshift.net> | 2009-12-20 03:43:21 +0000 |
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committer | Matthew Sackman <matthew@lshift.net> | 2009-12-20 03:43:21 +0000 |
commit | 5307e4c6a7f21458fda7fb97020dd838005046e2 (patch) | |
tree | 7989c1dcdd689a11903ea8475cf74776039c486d /src/rabbit_msg_store_ets_index.erl | |
parent | 6d3e84b4d013b0dc306927324de34b0d41133c84 (diff) | |
download | rabbitmq-server-5307e4c6a7f21458fda7fb97020dd838005046e2.tar.gz |
background lazy GC in and working
Diffstat (limited to 'src/rabbit_msg_store_ets_index.erl')
-rw-r--r-- | src/rabbit_msg_store_ets_index.erl | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/rabbit_msg_store_ets_index.erl b/src/rabbit_msg_store_ets_index.erl new file mode 100644 index 00000000..cb13ed86 --- /dev/null +++ b/src/rabbit_msg_store_ets_index.erl @@ -0,0 +1,71 @@ +%% The contents of this file are subject to the Mozilla Public License +%% Version 1.1 (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.mozilla.org/MPL/ +%% +%% 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. +%% +%% The Original Code is RabbitMQ. +%% +%% The Initial Developers of the Original Code are LShift Ltd, +%% Cohesive Financial Technologies LLC, and Rabbit Technologies Ltd. +%% +%% Portions created before 22-Nov-2008 00:00:00 GMT by LShift Ltd, +%% Cohesive Financial Technologies LLC, or Rabbit Technologies Ltd +%% are Copyright (C) 2007-2008 LShift Ltd, Cohesive Financial +%% Technologies LLC, and Rabbit Technologies Ltd. +%% +%% Portions created by LShift Ltd are Copyright (C) 2007-2009 LShift +%% Ltd. Portions created by Cohesive Financial Technologies LLC are +%% Copyright (C) 2007-2009 Cohesive Financial Technologies +%% LLC. Portions created by Rabbit Technologies Ltd are Copyright +%% (C) 2007-2009 Rabbit Technologies Ltd. +%% +%% All Rights Reserved. +%% +%% Contributor(s): ______________________________________. +%% + +-module(rabbit_msg_store_ets_index). +-export([init/0, lookup/2, insert/2, update/2, update_fields/3, delete/2, + delete_by_file/2, terminate/1]). + +-define(MSG_LOC_NAME, rabbit_msg_store_ets_index). + +-include("rabbit_msg_store.hrl"). + +init() -> + ets:new(?MSG_LOC_NAME, [set, public, {keypos, #msg_location.msg_id}]). + +lookup(Key, MsgLocations) -> + case ets:lookup(MsgLocations, Key) of + [] -> not_found; + [Entry] -> Entry + end. + +insert(Obj, MsgLocations) -> + true = ets:insert_new(MsgLocations, Obj), + ok. + +update(Obj, MsgLocations) -> + true = ets:insert(MsgLocations, Obj), + ok. + +update_fields(Key, Updates, MsgLocations) -> + true = ets:update_element(MsgLocations, Key, Updates), + ok. + +delete(Key, MsgLocations) -> + true = ets:delete(MsgLocations, Key), + ok. + +delete_by_file(File, MsgLocations) -> + MatchHead = #msg_location { file = File, _ = '_' }, + ets:select_delete(MsgLocations, [{MatchHead, [], [true]}]), + ok. + +terminate(MsgLocations) -> + ets:delete(MsgLocations). |