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-rw-r--r--lib/stdlib/test/gen_event_SUITE.erl4
-rw-r--r--lib/stdlib/test/gen_fsm_SUITE.erl106
-rw-r--r--lib/stdlib/test/gen_server_SUITE.erl109
-rw-r--r--lib/stdlib/test/proc_lib_SUITE.erl93
-rw-r--r--lib/stdlib/test/sys_SUITE.erl16
-rw-r--r--lib/stdlib/test/sys_sp1.erl14
-rw-r--r--lib/stdlib/test/sys_sp2.erl33
7 files changed, 319 insertions, 56 deletions
diff --git a/lib/stdlib/test/gen_event_SUITE.erl b/lib/stdlib/test/gen_event_SUITE.erl
index 60a1ba8c60..576a5adfce 100644
--- a/lib/stdlib/test/gen_event_SUITE.erl
+++ b/lib/stdlib/test/gen_event_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% 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
@@ -106,7 +106,7 @@ start(Config) when is_list(Config) ->
?line {error, {already_started, _}} =
gen_event:start({global, my_dummy_name}),
- exit(Pid6, shutdown),
+ ok = gen_event:stop({global, my_dummy_name}, shutdown, 10000),
receive
{'EXIT', Pid6, shutdown} -> ok
after 10000 ->
diff --git a/lib/stdlib/test/gen_fsm_SUITE.erl b/lib/stdlib/test/gen_fsm_SUITE.erl
index 8aeec07ae8..2e266198e9 100644
--- a/lib/stdlib/test/gen_fsm_SUITE.erl
+++ b/lib/stdlib/test/gen_fsm_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% 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
@@ -27,6 +27,9 @@
-export([start1/1, start2/1, start3/1, start4/1, start5/1, start6/1,
start7/1, start8/1, start9/1, start10/1, start11/1, start12/1]).
+-export([stop1/1, stop2/1, stop3/1, stop4/1, stop5/1, stop6/1, stop7/1,
+ stop8/1, stop9/1, stop10/1]).
+
-export([ abnormal1/1, abnormal2/1]).
-export([shutdown/1]).
@@ -64,6 +67,8 @@ groups() ->
[{start, [],
[start1, start2, start3, start4, start5, start6, start7,
start8, start9, start10, start11, start12]},
+ {stop, [],
+ [stop1, stop2, stop3, stop4, stop5, stop6, stop7, stop8, stop9, stop10]},
{abnormal, [], [abnormal1, abnormal2]},
{sys, [],
[sys1, call_format_status, error_format_status, get_state, replace_state]}].
@@ -278,6 +283,105 @@ start12(Config) when is_list(Config) ->
ok.
+%% Anonymous, reason 'normal'
+stop1(_Config) ->
+ {ok, Pid} = gen_fsm:start(?MODULE, [], []),
+ ok = gen_fsm:stop(Pid),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_fsm:stop(Pid)),
+ ok.
+
+%% Anonymous, other reason
+stop2(_Config) ->
+ {ok,Pid} = gen_fsm:start(?MODULE, [], []),
+ ok = gen_fsm:stop(Pid, other_reason, infinity),
+ false = erlang:is_process_alive(Pid),
+ ok.
+
+%% Anonymous, invalid timeout
+stop3(_Config) ->
+ {ok,Pid} = gen_fsm:start(?MODULE, [], []),
+ {'EXIT',_} = (catch gen_fsm:stop(Pid, other_reason, invalid_timeout)),
+ true = erlang:is_process_alive(Pid),
+ ok = gen_fsm:stop(Pid),
+ false = erlang:is_process_alive(Pid),
+ ok.
+
+%% Registered name
+stop4(_Config) ->
+ {ok,Pid} = gen_fsm:start({local,to_stop},?MODULE, [], []),
+ ok = gen_fsm:stop(to_stop),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_fsm:stop(to_stop)),
+ ok.
+
+%% Registered name and local node
+stop5(_Config) ->
+ {ok,Pid} = gen_fsm:start({local,to_stop},?MODULE, [], []),
+ ok = gen_fsm:stop({to_stop,node()}),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_fsm:stop({to_stop,node()})),
+ ok.
+
+%% Globally registered name
+stop6(_Config) ->
+ {ok, Pid} = gen_fsm:start({global, to_stop}, ?MODULE, [], []),
+ ok = gen_fsm:stop({global,to_stop}),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_fsm:stop({global,to_stop})),
+ ok.
+
+%% 'via' registered name
+stop7(_Config) ->
+ dummy_via:reset(),
+ {ok, Pid} = gen_fsm:start({via, dummy_via, to_stop},
+ ?MODULE, [], []),
+ ok = gen_fsm:stop({via, dummy_via, to_stop}),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_fsm:stop({via, dummy_via, to_stop})),
+ ok.
+
+%% Anonymous on remote node
+stop8(_Config) ->
+ {ok,Node} = test_server:start_node(gen_fsm_SUITE_stop8,slave,[]),
+ Dir = filename:dirname(code:which(?MODULE)),
+ rpc:call(Node,code,add_path,[Dir]),
+ {ok, Pid} = rpc:call(Node,gen_fsm,start,[?MODULE,[],[]]),
+ ok = gen_fsm:stop(Pid),
+ false = rpc:call(Node,erlang,is_process_alive,[Pid]),
+ {'EXIT',noproc} = (catch gen_fsm:stop(Pid)),
+ true = test_server:stop_node(Node),
+ {'EXIT',{{nodedown,Node},_}} = (catch gen_fsm:stop(Pid)),
+ ok.
+
+%% Registered name on remote node
+stop9(_Config) ->
+ {ok,Node} = test_server:start_node(gen_fsm_SUITE_stop9,slave,[]),
+ Dir = filename:dirname(code:which(?MODULE)),
+ rpc:call(Node,code,add_path,[Dir]),
+ {ok, Pid} = rpc:call(Node,gen_fsm,start,[{local,to_stop},?MODULE,[],[]]),
+ ok = gen_fsm:stop({to_stop,Node}),
+ undefined = rpc:call(Node,erlang,whereis,[to_stop]),
+ false = rpc:call(Node,erlang,is_process_alive,[Pid]),
+ {'EXIT',noproc} = (catch gen_fsm:stop({to_stop,Node})),
+ true = test_server:stop_node(Node),
+ {'EXIT',{{nodedown,Node},_}} = (catch gen_fsm:stop({to_stop,Node})),
+ ok.
+
+%% Globally registered name on remote node
+stop10(_Config) ->
+ {ok,Node} = test_server:start_node(gen_fsm_SUITE_stop10,slave,[]),
+ Dir = filename:dirname(code:which(?MODULE)),
+ rpc:call(Node,code,add_path,[Dir]),
+ {ok, Pid} = rpc:call(Node,gen_fsm,start,[{global,to_stop},?MODULE,[],[]]),
+ global:sync(),
+ ok = gen_fsm:stop({global,to_stop}),
+ false = rpc:call(Node,erlang,is_process_alive,[Pid]),
+ {'EXIT',noproc} = (catch gen_fsm:stop({global,to_stop})),
+ true = test_server:stop_node(Node),
+ {'EXIT',noproc} = (catch gen_fsm:stop({global,to_stop})),
+ ok.
+
%% Check that time outs in calls work
abnormal1(suite) -> [];
abnormal1(Config) when is_list(Config) ->
diff --git a/lib/stdlib/test/gen_server_SUITE.erl b/lib/stdlib/test/gen_server_SUITE.erl
index 960e7f60e7..c3ec4932b3 100644
--- a/lib/stdlib/test/gen_server_SUITE.erl
+++ b/lib/stdlib/test/gen_server_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% 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
@@ -35,6 +35,9 @@
error_format_status/1, get_state/1, replace_state/1, call_with_huge_message_queue/1
]).
+-export([stop1/1, stop2/1, stop3/1, stop4/1, stop5/1, stop6/1, stop7/1,
+ stop8/1, stop9/1, stop10/1]).
+
% spawn export
-export([spec_init_local/2, spec_init_global/2, spec_init_via/2,
spec_init_default_timeout/2, spec_init_global_default_timeout/2,
@@ -50,7 +53,7 @@
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [start, crash, call, cast, cast_fast, info, abcast,
+ [start, {group,stop}, crash, call, cast, cast_fast, info, abcast,
multicall, multicall_down, call_remote1, call_remote2,
call_remote3, call_remote_n1, call_remote_n2,
call_remote_n3, spec_init,
@@ -61,7 +64,8 @@ all() ->
call_with_huge_message_queue].
groups() ->
- [].
+ [{stop, [],
+ [stop1, stop2, stop3, stop4, stop5, stop6, stop7, stop8, stop9, stop10]}].
init_per_suite(Config) ->
Config.
@@ -235,6 +239,105 @@ start(Config) when is_list(Config) ->
process_flag(trap_exit, OldFl),
ok.
+%% Anonymous, reason 'normal'
+stop1(_Config) ->
+ {ok, Pid} = gen_server:start(?MODULE, [], []),
+ ok = gen_server:stop(Pid),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_server:stop(Pid)),
+ ok.
+
+%% Anonymous, other reason
+stop2(_Config) ->
+ {ok,Pid} = gen_server:start(?MODULE, [], []),
+ ok = gen_server:stop(Pid, other_reason, infinity),
+ false = erlang:is_process_alive(Pid),
+ ok.
+
+%% Anonymous, invalid timeout
+stop3(_Config) ->
+ {ok,Pid} = gen_server:start(?MODULE, [], []),
+ {'EXIT',_} = (catch gen_server:stop(Pid, other_reason, invalid_timeout)),
+ true = erlang:is_process_alive(Pid),
+ ok = gen_server:stop(Pid),
+ false = erlang:is_process_alive(Pid),
+ ok.
+
+%% Registered name
+stop4(_Config) ->
+ {ok,Pid} = gen_server:start({local,to_stop},?MODULE, [], []),
+ ok = gen_server:stop(to_stop),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_server:stop(to_stop)),
+ ok.
+
+%% Registered name and local node
+stop5(_Config) ->
+ {ok,Pid} = gen_server:start({local,to_stop},?MODULE, [], []),
+ ok = gen_server:stop({to_stop,node()}),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_server:stop({to_stop,node()})),
+ ok.
+
+%% Globally registered name
+stop6(_Config) ->
+ {ok, Pid} = gen_server:start({global, to_stop}, ?MODULE, [], []),
+ ok = gen_server:stop({global,to_stop}),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_server:stop({global,to_stop})),
+ ok.
+
+%% 'via' registered name
+stop7(_Config) ->
+ dummy_via:reset(),
+ {ok, Pid} = gen_server:start({via, dummy_via, to_stop},
+ ?MODULE, [], []),
+ ok = gen_server:stop({via, dummy_via, to_stop}),
+ false = erlang:is_process_alive(Pid),
+ {'EXIT',noproc} = (catch gen_server:stop({via, dummy_via, to_stop})),
+ ok.
+
+%% Anonymous on remote node
+stop8(_Config) ->
+ {ok,Node} = test_server:start_node(gen_server_SUITE_stop8,slave,[]),
+ Dir = filename:dirname(code:which(?MODULE)),
+ rpc:call(Node,code,add_path,[Dir]),
+ {ok, Pid} = rpc:call(Node,gen_server,start,[?MODULE,[],[]]),
+ ok = gen_server:stop(Pid),
+ false = rpc:call(Node,erlang,is_process_alive,[Pid]),
+ {'EXIT',noproc} = (catch gen_server:stop(Pid)),
+ true = test_server:stop_node(Node),
+ {'EXIT',{{nodedown,Node},_}} = (catch gen_server:stop(Pid)),
+ ok.
+
+%% Registered name on remote node
+stop9(_Config) ->
+ {ok,Node} = test_server:start_node(gen_server_SUITE_stop9,slave,[]),
+ Dir = filename:dirname(code:which(?MODULE)),
+ rpc:call(Node,code,add_path,[Dir]),
+ {ok, Pid} = rpc:call(Node,gen_server,start,[{local,to_stop},?MODULE,[],[]]),
+ ok = gen_server:stop({to_stop,Node}),
+ undefined = rpc:call(Node,erlang,whereis,[to_stop]),
+ false = rpc:call(Node,erlang,is_process_alive,[Pid]),
+ {'EXIT',noproc} = (catch gen_server:stop({to_stop,Node})),
+ true = test_server:stop_node(Node),
+ {'EXIT',{{nodedown,Node},_}} = (catch gen_server:stop({to_stop,Node})),
+ ok.
+
+%% Globally registered name on remote node
+stop10(_Config) ->
+ {ok,Node} = test_server:start_node(gen_server_SUITE_stop10,slave,[]),
+ Dir = filename:dirname(code:which(?MODULE)),
+ rpc:call(Node,code,add_path,[Dir]),
+ {ok, Pid} = rpc:call(Node,gen_server,start,[{global,to_stop},?MODULE,[],[]]),
+ global:sync(),
+ ok = gen_server:stop({global,to_stop}),
+ false = rpc:call(Node,erlang,is_process_alive,[Pid]),
+ {'EXIT',noproc} = (catch gen_server:stop({global,to_stop})),
+ true = test_server:stop_node(Node),
+ {'EXIT',noproc} = (catch gen_server:stop({global,to_stop})),
+ ok.
+
crash(Config) when is_list(Config) ->
?line error_logger_forwarder:register(),
diff --git a/lib/stdlib/test/proc_lib_SUITE.erl b/lib/stdlib/test/proc_lib_SUITE.erl
index 8dca69bac4..b6f1973a05 100644
--- a/lib/stdlib/test/proc_lib_SUITE.erl
+++ b/lib/stdlib/test/proc_lib_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% 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
@@ -27,7 +27,7 @@
init_per_group/2,end_per_group/2,
crash/1, sync_start_nolink/1, sync_start_link/1,
spawn_opt/1, sp1/0, sp2/0, sp3/1, sp4/2, sp5/1,
- hibernate/1]).
+ hibernate/1, stop/1]).
-export([ otp_6345/1, init_dont_hang/1]).
-export([hib_loop/1, awaken/1]).
@@ -38,6 +38,7 @@
-export([otp_6345_init/1, init_dont_hang_init/1]).
+-export([system_terminate/4]).
-ifdef(STANDALONE).
-define(line, noop, ).
@@ -49,7 +50,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[crash, {group, sync_start}, spawn_opt, hibernate,
- {group, tickets}].
+ {group, tickets}, stop].
groups() ->
[{tickets, [], [otp_6345, init_dont_hang]},
@@ -361,10 +362,94 @@ init_dont_hang(Config) when is_list(Config) ->
exit(Error)
end.
-init_dont_hang_init(Parent) ->
+init_dont_hang_init(_Parent) ->
1 = 2.
+%% Test proc_lib:stop/1,3
+stop(_Config) ->
+ Parent = self(),
+ SysMsgProc =
+ fun() ->
+ receive
+ {system,From,Request} ->
+ sys:handle_system_msg(Request,From,Parent,?MODULE,[],[])
+ end
+ end,
+
+ %% Normal case:
+ %% Process handles system message and terminated with given reason
+ Pid1 = proc_lib:spawn(SysMsgProc),
+ ok = proc_lib:stop(Pid1),
+ false = erlang:is_process_alive(Pid1),
+
+ %% Process does not exit
+ {'EXIT',noproc} = (catch proc_lib:stop(Pid1)),
+
+ %% Badly handled system message
+ DieProc =
+ fun() ->
+ receive
+ {system,_From,_Request} ->
+ exit(die)
+ end
+ end,
+ Pid2 = proc_lib:spawn(DieProc),
+ {'EXIT',{die,_}} = (catch proc_lib:stop(Pid2)),
+
+ %% Hanging process => timeout
+ HangProc =
+ fun() ->
+ receive
+ {system,_From,_Request} ->
+ timer:sleep(5000)
+ end
+ end,
+ Pid3 = proc_lib:spawn(HangProc),
+ {'EXIT',timeout} = (catch proc_lib:stop(Pid3,normal,1000)),
+
+ %% Success case with other reason than 'normal'
+ Pid4 = proc_lib:spawn(SysMsgProc),
+ ok = proc_lib:stop(Pid4,other_reason,infinity),
+ false = erlang:is_process_alive(Pid4),
+
+ %% System message is handled, but process dies with other reason
+ %% than the given (in system_terminate/4 below)
+ Pid5 = proc_lib:spawn(SysMsgProc),
+ {'EXIT',{badmatch,2}} = (catch proc_lib:stop(Pid5,crash,infinity)),
+ false = erlang:is_process_alive(Pid5),
+
+ %% Local registered name
+ Pid6 = proc_lib:spawn(SysMsgProc),
+ register(to_stop,Pid6),
+ ok = proc_lib:stop(to_stop),
+ undefined = whereis(to_stop),
+ false = erlang:is_process_alive(Pid6),
+
+ %% Remote registered name
+ {ok,Node} = test_server:start_node(proc_lib_SUITE_stop,slave,[]),
+ Dir = filename:dirname(code:which(?MODULE)),
+ rpc:call(Node,code,add_path,[Dir]),
+ Pid7 = spawn(Node,SysMsgProc),
+ true = rpc:call(Node,erlang,register,[to_stop,Pid7]),
+ Pid7 = rpc:call(Node,erlang,whereis,[to_stop]),
+ ok = proc_lib:stop({to_stop,Node}),
+ undefined = rpc:call(Node,erlang,whereis,[to_stop]),
+ false = rpc:call(Node,erlang,is_process_alive,[Pid7]),
+
+ %% Local and remote registered name, but non-existing
+ {'EXIT',noproc} = (catch proc_lib:stop(to_stop)),
+ {'EXIT',noproc} = (catch proc_lib:stop({to_stop,Node})),
+
+ true = test_server:stop_node(Node),
+
+ %% Remote registered name, but non-existing node
+ {'EXIT',{{nodedown,Node},_}} = (catch proc_lib:stop({to_stop,Node})),
+ ok.
+system_terminate(crash,_Parent,_Deb,_State) ->
+ 1 = 2;
+system_terminate(Reason,_Parent,_Deb,_State) ->
+ exit(Reason).
%%-----------------------------------------------------------------
%% The error_logger handler used.
diff --git a/lib/stdlib/test/sys_SUITE.erl b/lib/stdlib/test/sys_SUITE.erl
index f38bc87ae5..047ee9f1fa 100644
--- a/lib/stdlib/test/sys_SUITE.erl
+++ b/lib/stdlib/test/sys_SUITE.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% 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
@@ -202,14 +202,7 @@ spec_proc(Mod) ->
{Mod,system_get_state},{throw,fail}},_}} ->
ok
end,
- Mod:stop(),
- WaitForUnregister = fun W() ->
- case whereis(Mod) of
- undefined -> ok;
- _ -> timer:sleep(10), W()
- end
- end,
- WaitForUnregister(),
+ ok = sys:terminate(Mod, normal),
{ok,_} = Mod:start_link(4),
ok = case catch sys:replace_state(Mod, fun(_) -> {} end) of
{} ->
@@ -218,8 +211,7 @@ spec_proc(Mod) ->
{Mod,system_replace_state},{throw,fail}},_}} ->
ok
end,
- Mod:stop(),
- WaitForUnregister(),
+ ok = sys:terminate(Mod, normal),
{ok,_} = Mod:start_link(4),
StateFun = fun(_) -> error(fail) end,
ok = case catch sys:replace_state(Mod, StateFun) of
@@ -231,7 +223,7 @@ spec_proc(Mod) ->
{'EXIT',{{callback_failed,StateFun,{error,fail}},_}} ->
ok
end,
- Mod:stop().
+ ok = sys:terminate(Mod, normal).
%%%%%%%%%%%%%%%%%%%%
%% Dummy server
diff --git a/lib/stdlib/test/sys_sp1.erl b/lib/stdlib/test/sys_sp1.erl
index e84ffcfa12..0fb288991f 100644
--- a/lib/stdlib/test/sys_sp1.erl
+++ b/lib/stdlib/test/sys_sp1.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% 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
@@ -17,7 +17,7 @@
%% %CopyrightEnd%
%%
-module(sys_sp1).
--export([start_link/1, stop/0]).
+-export([start_link/1]).
-export([alloc/0, free/1]).
-export([init/1]).
-export([system_continue/3, system_terminate/4,
@@ -31,10 +31,6 @@
start_link(NumCh) ->
proc_lib:start_link(?MODULE, init, [[self(),NumCh]]).
-stop() ->
- ?MODULE ! stop,
- ok.
-
alloc() ->
?MODULE ! {self(), alloc},
receive
@@ -70,11 +66,7 @@ loop(Chs, Parent, Deb) ->
loop(Chs2, Parent, Deb2);
{system, From, Request} ->
sys:handle_system_msg(Request, From, Parent,
- ?MODULE, Deb, Chs);
- stop ->
- sys:handle_debug(Deb, fun write_debug/3,
- ?MODULE, {in, stop}),
- ok
+ ?MODULE, Deb, Chs)
end.
system_continue(Parent, Deb, Chs) ->
diff --git a/lib/stdlib/test/sys_sp2.erl b/lib/stdlib/test/sys_sp2.erl
index 56a5e4d071..a0847b5838 100644
--- a/lib/stdlib/test/sys_sp2.erl
+++ b/lib/stdlib/test/sys_sp2.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% 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
@@ -17,7 +17,7 @@
%% %CopyrightEnd%
%%
-module(sys_sp2).
--export([start_link/1, stop/0]).
+-export([start_link/1]).
-export([alloc/0, free/1]).
-export([init/1]).
-export([system_continue/3, system_terminate/4,
@@ -30,10 +30,6 @@
start_link(NumCh) ->
proc_lib:start_link(?MODULE, init, [[self(),NumCh]]).
-stop() ->
- ?MODULE ! stop,
- ok.
-
alloc() ->
?MODULE ! {self(), alloc},
receive
@@ -45,11 +41,6 @@ free(Ch) ->
?MODULE ! {free, Ch},
ok.
-%% can't use 2-tuple for state here as we do in sys_sp1, since the 2-tuple
-%% is not compatible with the backward compatibility handling for
-%% sys:get_state in sys.erl
--record(state, {alloc,free}).
-
init([Parent,NumCh]) ->
register(?MODULE, self()),
Chs = channels(NumCh),
@@ -74,11 +65,7 @@ loop(Chs, Parent, Deb) ->
loop(Chs2, Parent, Deb2);
{system, From, Request} ->
sys:handle_system_msg(Request, From, Parent,
- ?MODULE, Deb, Chs);
- stop ->
- sys:handle_debug(Deb, fun write_debug/3,
- ?MODULE, {in, stop}),
- ok
+ ?MODULE, Deb, Chs)
end.
system_continue(Parent, Deb, Chs) ->
@@ -91,17 +78,17 @@ write_debug(Dev, Event, Name) ->
io:format(Dev, "~p event = ~p~n", [Name, Event]).
channels(NumCh) ->
- #state{alloc=[], free=lists:seq(1,NumCh)}.
+ {_Allocated=[], _Free=lists:seq(1,NumCh)}.
-alloc(#state{free=[]}=Channels) ->
- {{error, "no channels available"}, Channels};
-alloc(#state{alloc=Allocated, free=[H|T]}) ->
- {H, #state{alloc=[H|Allocated], free=T}}.
+alloc({_, []}) ->
+ {error, "no channels available"};
+alloc({Allocated, [H|T]}) ->
+ {H, {[H|Allocated], T}}.
-free(Ch, #state{alloc=Alloc, free=Free}=Channels) ->
+free(Ch, {Alloc, Free}=Channels) ->
case lists:member(Ch, Alloc) of
true ->
- #state{alloc=lists:delete(Ch, Alloc), free=[Ch|Free]};
+ {lists:delete(Ch, Alloc), [Ch|Free]};
false ->
Channels
end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 10:48:39 +0000