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-rw-r--r--lib/stdlib/src/gen.erl132
1 files changed, 73 insertions, 59 deletions
diff --git a/lib/stdlib/src/gen.erl b/lib/stdlib/src/gen.erl
index 63116fa16e..a05c2ce6fd 100644
--- a/lib/stdlib/src/gen.erl
+++ b/lib/stdlib/src/gen.erl
@@ -3,16 +3,17 @@
%%
%% Copyright Ericsson AB 1996-2014. 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/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
%%
-%% 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.
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
%%
%% %CopyrightEnd%
%%
@@ -26,7 +27,7 @@
%%% The standard behaviour should export init_it/6.
%%%-----------------------------------------------------------------
-export([start/5, start/6, debug_options/1,
- call/3, call/4, reply/2]).
+ call/3, call/4, reply/2, stop/1, stop/3]).
-export([init_it/6, init_it/7]).
@@ -145,56 +146,10 @@ init_it2(GenMod, Starter, Parent, Name, Mod, Args, Options) ->
call(Process, Label, Request) ->
call(Process, Label, Request, ?default_timeout).
-%% Local or remote by pid
-call(Pid, Label, Request, Timeout)
- when is_pid(Pid), Timeout =:= infinity;
- is_pid(Pid), is_integer(Timeout), Timeout >= 0 ->
- do_call(Pid, Label, Request, Timeout);
-%% Local by name
-call(Name, Label, Request, Timeout)
- when is_atom(Name), Timeout =:= infinity;
- is_atom(Name), is_integer(Timeout), Timeout >= 0 ->
- case whereis(Name) of
- Pid when is_pid(Pid) ->
- do_call(Pid, Label, Request, Timeout);
- undefined ->
- exit(noproc)
- end;
-%% Global by name
call(Process, Label, Request, Timeout)
- when ((tuple_size(Process) == 2 andalso element(1, Process) == global)
- orelse
- (tuple_size(Process) == 3 andalso element(1, Process) == via))
- andalso
- (Timeout =:= infinity orelse (is_integer(Timeout) andalso Timeout >= 0)) ->
- case where(Process) of
- Pid when is_pid(Pid) ->
- Node = node(Pid),
- try do_call(Pid, Label, Request, Timeout)
- catch
- exit:{nodedown, Node} ->
- %% A nodedown not yet detected by global,
- %% pretend that it was.
- exit(noproc)
- end;
- undefined ->
- exit(noproc)
- end;
-%% Local by name in disguise
-call({Name, Node}, Label, Request, Timeout)
- when Node =:= node(), Timeout =:= infinity;
- Node =:= node(), is_integer(Timeout), Timeout >= 0 ->
- call(Name, Label, Request, Timeout);
-%% Remote by name
-call({_Name, Node}=Process, Label, Request, Timeout)
- when is_atom(Node), Timeout =:= infinity;
- is_atom(Node), is_integer(Timeout), Timeout >= 0 ->
- if
- node() =:= nonode@nohost ->
- exit({nodedown, Node});
- true ->
- do_call(Process, Label, Request, Timeout)
- end.
+ when Timeout =:= infinity; is_integer(Timeout), Timeout >= 0 ->
+ Fun = fun(Pid) -> do_call(Pid, Label, Request, Timeout) end,
+ do_for_proc(Process, Fun).
do_call(Process, Label, Request, Timeout) ->
try erlang:monitor(process, Process) of
@@ -276,6 +231,65 @@ reply({To, Tag}, Reply) ->
Msg = {Tag, Reply},
try To ! Msg catch _:_ -> Msg end.
+%%-----------------------------------------------------------------
+%% Syncronously stop a generic process
+%%-----------------------------------------------------------------
+stop(Process) ->
+ stop(Process, normal, infinity).
+
+stop(Process, Reason, Timeout)
+ when Timeout =:= infinity; is_integer(Timeout), Timeout >= 0 ->
+ Fun = fun(Pid) -> proc_lib:stop(Pid, Reason, Timeout) end,
+ do_for_proc(Process, Fun).
+
+%%-----------------------------------------------------------------
+%% Map different specifications of a process to either Pid or
+%% {Name,Node}. Execute the given Fun with the process as only
+%% argument.
+%% -----------------------------------------------------------------
+
+%% Local or remote by pid
+do_for_proc(Pid, Fun) when is_pid(Pid) ->
+ Fun(Pid);
+%% Local by name
+do_for_proc(Name, Fun) when is_atom(Name) ->
+ case whereis(Name) of
+ Pid when is_pid(Pid) ->
+ Fun(Pid);
+ undefined ->
+ exit(noproc)
+ end;
+%% Global by name
+do_for_proc(Process, Fun)
+ when ((tuple_size(Process) == 2 andalso element(1, Process) == global)
+ orelse
+ (tuple_size(Process) == 3 andalso element(1, Process) == via)) ->
+ case where(Process) of
+ Pid when is_pid(Pid) ->
+ Node = node(Pid),
+ try Fun(Pid)
+ catch
+ exit:{nodedown, Node} ->
+ %% A nodedown not yet detected by global,
+ %% pretend that it was.
+ exit(noproc)
+ end;
+ undefined ->
+ exit(noproc)
+ end;
+%% Local by name in disguise
+do_for_proc({Name, Node}, Fun) when Node =:= node() ->
+ do_for_proc(Name, Fun);
+%% Remote by name
+do_for_proc({_Name, Node} = Process, Fun) when is_atom(Node) ->
+ if
+ node() =:= nonode@nohost ->
+ exit({nodedown, Node});
+ true ->
+ Fun(Process)
+ end.
+
+
%%%-----------------------------------------------------------------
%%% Misc. functions.
%%%-----------------------------------------------------------------