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|
%%
%% %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.
|
