diff options
Diffstat (limited to 'lib/asn1/src/asn1ct_name.erl')
| -rw-r--r-- | lib/asn1/src/asn1ct_name.erl | 89 |
1 files changed, 41 insertions, 48 deletions
diff --git a/lib/asn1/src/asn1ct_name.erl b/lib/asn1/src/asn1ct_name.erl index a6aa4255cc..3ab6f7b0ed 100644 --- a/lib/asn1/src/asn1ct_name.erl +++ b/lib/asn1/src/asn1ct_name.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2009. All Rights Reserved. +%% Copyright Ericsson AB 1997-2012. 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 @@ -20,8 +20,7 @@ -module(asn1ct_name). %%-compile(export_all). --export([name_server_loop/1, - start/0, +-export([start/0, stop/0, push/1, pop/1, @@ -35,38 +34,50 @@ new/1]). start() -> - start_server(asn1_ns, asn1ct_name,name_server_loop,[[]]). + Parent = self(), + case get(?MODULE) of + undefined -> + put(?MODULE, spawn_link(fun() -> + Ref = monitor(process, Parent), + name_server_loop({Ref,Parent},[]) + end)), + ok; + _Pid -> + already_started + end. -stop() -> stop_server(asn1_ns). +stop() -> + req(stop), + erase(?MODULE). -name_server_loop(Vars) -> +name_server_loop({Ref, Parent} = Monitor,Vars) -> %% io:format("name -- ~w~n",[Vars]), receive {From,{current,Variable}} -> - From ! {asn1_ns,get_curr(Vars,Variable)}, - name_server_loop(Vars); + From ! {?MODULE,get_curr(Vars,Variable)}, + name_server_loop(Monitor,Vars); {From,{pop,Variable}} -> - From ! {asn1_ns,done}, - name_server_loop(pop_var(Vars,Variable)); + From ! {?MODULE,done}, + name_server_loop(Monitor,pop_var(Vars,Variable)); {From,{push,Variable}} -> - From ! {asn1_ns,done}, - name_server_loop(push_var(Vars,Variable)); + From ! {?MODULE,done}, + name_server_loop(Monitor,push_var(Vars,Variable)); {From,{delete,Variable}} -> - From ! {asn1_ns,done}, - name_server_loop(delete_var(Vars,Variable)); + From ! {?MODULE,done}, + name_server_loop(Monitor,delete_var(Vars,Variable)); {From,{new,Variable}} -> - From ! {asn1_ns,done}, - name_server_loop(new_var(Vars,Variable)); + From ! {?MODULE,done}, + name_server_loop(Monitor,new_var(Vars,Variable)); {From,{prev,Variable}} -> - From ! {asn1_ns,get_prev(Vars,Variable)}, - name_server_loop(Vars); + From ! {?MODULE,get_prev(Vars,Variable)}, + name_server_loop(Monitor,Vars); {From,{next,Variable}} -> - From ! {asn1_ns,get_next(Vars,Variable)}, - name_server_loop(Vars); + From ! {?MODULE,get_next(Vars,Variable)}, + name_server_loop(Monitor,Vars); + {'DOWN', Ref, process, Parent, Reason} -> + exit(Reason); {From,stop} -> - unregister(asn1_ns), - From ! {asn1_ns,stopped}, - exit(normal) + From ! {?MODULE,stopped} end. active(V) -> @@ -76,12 +87,16 @@ active(V) -> end. req(Req) -> - asn1_ns ! {self(), Req}, - receive {asn1_ns, Reply} -> Reply end. + get(?MODULE) ! {self(), Req}, + receive + {?MODULE, Reply} -> Reply + after 5000 -> + exit(name_server_timeout) + end. pop(V) -> req({pop,V}). push(V) -> req({push,V}). -clear() -> req(stop), start(). +clear() -> stop(), start(). curr(V) -> req({current,V}). new(V) -> req({new,V}). delete(V) -> req({delete,V}). @@ -209,25 +224,3 @@ get_next(Vars,Variable) -> _ -> none end. - - -stop_server(Name) -> - stop_server(Name, whereis(Name)). -stop_server(_Name, undefined) -> stopped; -stop_server(Name, _Pid) -> - Name ! {self(), stop}, - receive {Name, _} -> stopped end. - - -start_server(Name,Mod,Fun,Args) -> - case whereis(Name) of - undefined -> - case catch register(Name, spawn(Mod,Fun, Args)) of - {'EXIT',{badarg,_}} -> - start_server(Name,Mod,Fun,Args); - _ -> - ok - end; - _Pid -> - already_started - end. |