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-rw-r--r--lib/asn1/src/asn1_db.erl67
1 files changed, 17 insertions, 50 deletions
diff --git a/lib/asn1/src/asn1_db.erl b/lib/asn1/src/asn1_db.erl
index 843fc66c9c..e96ca9ae25 100644
--- a/lib/asn1/src/asn1_db.erl
+++ b/lib/asn1/src/asn1_db.erl
@@ -19,31 +19,22 @@
%%
-module(asn1_db).
--export([dbstart/1,dbnew/1,dbsave/2,dbload/1,dbput/3,dbget/2,dbget_all/1]).
--export([dbget_all_mod/1,dbclear/0,dberase_module/1,dbstop/0]).
+-export([dbstart/1,dbnew/1,dbsave/2,dbput/3,dbget/2]).
+-export([dbstop/0]).
-record(state, {parent, monitor, includes, table}).
%% Interface
dbstart(Includes) ->
Parent = self(),
- case get(?MODULE) of
- undefined ->
- put(?MODULE, spawn_link(fun() -> init(Parent, Includes) end)),
- true;
- _Pid ->
- req({new_includes, Includes})
- end.
+ undefined = get(?MODULE), %Assertion.
+ put(?MODULE, spawn_link(fun() -> init(Parent, Includes) end)),
+ ok.
dbnew(Module) -> req({new, Module}).
-dbsave(OutFile, Module) -> req({save, OutFile, Module}).
-dbload(Module) -> req({load, Module}).
-dbput(Module, K, V) -> req({set, Module, K, V}).
+dbsave(OutFile, Module) -> cast({save, OutFile, Module}).
+dbput(Module, K, V) -> cast({set, Module, K, V}).
dbget(Module, K) -> req({get, Module, K}).
-dbget_all(K) -> req({get_all, K}).
-dbget_all_mod(Mod) -> req({all_mod, Mod}).
-dbclear() -> req(clear).
-dberase_module({module,M}) -> req({delete_mod, M}).
dbstop() -> Resp = req(stop), erase(?MODULE), Resp.
%% Internal functions
@@ -59,8 +50,13 @@ req(Request) ->
exit({db_error,Info})
end.
+cast(Request) ->
+ get(?MODULE) ! Request,
+ ok.
+
reply({Ref,From}, Response) ->
- From ! {{Ref,?MODULE}, Response}.
+ From ! {{Ref,?MODULE}, Response},
+ ok.
init(Parent, Includes) ->
MRef = erlang:monitor(process, Parent),
@@ -70,10 +66,9 @@ init(Parent, Includes) ->
loop(#state{parent = Parent, monitor = MRef, table = Table,
includes = Includes} = State) ->
receive
- {From, {set, Mod, K2, V}} ->
+ {set, Mod, K2, V} ->
[{_, Modtab}] = ets:lookup(Table, Mod),
ets:insert(Modtab, {K2, V}),
- reply(From, ok),
loop(State);
{From, {get, Mod, K2}} ->
Result = case ets:lookup(Table, Mod) of
@@ -85,44 +80,16 @@ loop(#state{parent = Parent, monitor = MRef, table = Table,
_Error -> reply(From, undefined)
end,
loop(State);
- {From, {all_mod, Mod}} ->
- [{_, Modtab}] = ets:lookup(Table, Mod),
- reply(From, ets:tab2list(Modtab)),
- loop(State);
- {From, {delete_mod, Mod}} ->
- [{_, Modtab}] = ets:lookup(Table, Mod),
- ets:delete(Modtab),
- ets:delete(Table, Mod),
- reply(From, ok),
- loop(State);
- {From, {save, OutFile, Mod}} ->
+ {save, OutFile, Mod} ->
[{_,Mtab}] = ets:lookup(Table, Mod),
- reply(From, ets:tab2file(Mtab, OutFile)),
- loop(State);
- {From, {load, Mod}} ->
- Result = case ets:lookup(Table, Mod) of
- [] -> opentab(Table, Mod, Includes);
- [{_, Modtab}] -> {ok, Modtab}
- end,
- reply(From, Result),
+ ok = ets:tab2file(Mtab, OutFile),
loop(State);
{From, {new, Mod}} ->
- case ets:lookup(Table, Mod) of
- [{_, Modtab}] -> ets:delete(Modtab);
- _ -> true
- end,
+ [] = ets:lookup(Table, Mod), %Assertion.
ModTableId = ets:new(list_to_atom(lists:concat(["asn1_",Mod])), []),
ets:insert(Table, {Mod, ModTableId}),
reply(From, ok),
loop(State);
- {From, clear} ->
- [ets:delete(Mt) || {_, Mt} <- ets:tab2list(Table)],
- ets:delete(Table),
- reply(From, cleared),
- loop(State#state{table = ets:new(asn1, [set])});
- {From, {new_includes, NewIncludes}} ->
- reply(From, true),
- loop(State#state{includes = NewIncludes});
{From, stop} ->
reply(From, stopped); %% Nothing to store
{'DOWN', MRef, process, Parent, Reason} ->