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author | Erlang/OTP <[email protected]> | 2009-11-20 14:54:40 +0000 |
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committer | Erlang/OTP <[email protected]> | 2009-11-20 14:54:40 +0000 |
commit | 84adefa331c4159d432d22840663c38f155cd4c1 (patch) | |
tree | bff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/tv/src/tv_table_owner.erl | |
download | otp-84adefa331c4159d432d22840663c38f155cd4c1.tar.gz otp-84adefa331c4159d432d22840663c38f155cd4c1.tar.bz2 otp-84adefa331c4159d432d22840663c38f155cd4c1.zip |
The R13B03 release.OTP_R13B03
Diffstat (limited to 'lib/tv/src/tv_table_owner.erl')
-rw-r--r-- | lib/tv/src/tv_table_owner.erl | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/lib/tv/src/tv_table_owner.erl b/lib/tv/src/tv_table_owner.erl new file mode 100644 index 0000000000..bccac6c236 --- /dev/null +++ b/lib/tv/src/tv_table_owner.erl @@ -0,0 +1,122 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 1998-2009. 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. +%% +%% %CopyrightEnd% +-module(tv_table_owner). + + + +-export([create/5 + ]). + + +-export([internal_create/3, + start/0, + init/0 + ]). + + + +-define(REGISTERED_NAME, tv_table_owner). + + + +create(mnesia, _Node, _LocalNode, _TableName, _Options) -> + error; +create(ets, _Node, true, TabName, Options) -> + case catch internal_create(ets, TabName, Options) of + {TabName, Pid} when is_pid(Pid) -> + {ok, {TabName,Pid}}; + {TabNo, Pid} when is_pid(Pid) -> + {ok, {TabNo,Pid}}; + _OtherResult -> + error + end; +create(ets, Node, false, TabName, Options) -> + case catch rpc:block_call(Node, ?MODULE, internal_create, [ets, TabName, Options]) of + {TabName, Pid} when is_pid(Pid) -> + {ok, {TabName,Pid}}; + {TabNo, Pid} when is_pid(Pid) -> + {ok, {TabNo,Pid}}; + _OtherResult -> + error + end. + + + + + +internal_create(ets, TabName, Options) -> + ?MODULE:start(), + ?REGISTERED_NAME ! {create, self(), ets, TabName, Options}, + receive + {?REGISTERED_NAME, Result} -> + Result + after + 5000 -> + error + end. + + + + + + +start() -> + case whereis(?REGISTERED_NAME) of + undefined -> + ServerPid = spawn(?MODULE, init, []), + case catch register(?REGISTERED_NAME, ServerPid) of + true -> + ok; + {'EXIT', _Reason} -> + exit(ServerPid, kill), + timer:sleep(500), + start() + end; + Pid when is_pid(Pid) -> + ok + end. + + + + + + + + +init() -> + %% Currently no initialisations! + loop(). + + + + + + +loop() -> + receive + + {create, Sender, ets, TabName, Options} -> + Sender ! {?REGISTERED_NAME, (catch ets:new(TabName, Options))}, + loop(); + + + _Other -> + loop() + + end. + |