mirror of
https://github.com/processone/ejabberd.git
synced 2024-06-18 22:15:20 +02:00
Use queue to reduced quadratic time effort on selective receive (thanks to Alexey Shchepin)
Merged from trunk@2644 SVN Revision: 2646
This commit is contained in:
Badlop
parent
65926460b2
commit
a2bb22a0e7
|
|
@ -27,7 +27,9 @@
|
|||
-module(ejabberd_service).
|
||||
-author('alexey@process-one.net').
|
||||
|
||||
-behaviour(gen_fsm).
|
||||
-define(GEN_FSM, p1_fsm).
|
||||
|
||||
-behaviour(?GEN_FSM).
|
||||
|
||||
%% External exports
|
||||
-export([start/2,
|
||||
|
|
@ -68,6 +70,11 @@
|
|||
-define(DEFAULT_NS, ?NS_COMPONENT_ACCEPT).
|
||||
-define(PREFIXED_NS, [{?NS_XMPP, ?NS_XMPP_pfx}]).
|
||||
|
||||
%% Only change this value if you now what your are doing:
|
||||
-define(FSMLIMITS,[]).
|
||||
%% -define(FSMLIMITS, [{max_queue, 2000}]).
|
||||
|
||||
|
||||
%%%----------------------------------------------------------------------
|
||||
%%% API
|
||||
%%%----------------------------------------------------------------------
|
||||
|
|
@ -75,7 +82,8 @@ start(SockData, Opts) ->
|
|||
supervisor:start_child(ejabberd_service_sup, [SockData, Opts]).
|
||||
|
||||
start_link(SockData, Opts) ->
|
||||
gen_fsm:start_link(ejabberd_service, [SockData, Opts], ?FSMOPTS).
|
||||
?GEN_FSM:start_link(
|
||||
ejabberd_service, [SockData, Opts], ?FSMLIMITS ++ ?FSMOPTS).
|
||||
|
||||
socket_type() ->
|
||||
xml_stream.
|
||||
|
|
|
|||
164
src/p1_fsm.erl
164
src/p1_fsm.erl
|
|
@ -21,7 +21,7 @@
|
|||
%% terminate immediatetly. If the fsm trap_exit process flag has been
|
||||
%% set to true, the FSM terminate function will called.
|
||||
%% - You can pass the gen_fsm options to control resource usage.
|
||||
%% {max_messages, N} will exit the process with priority_shutdown
|
||||
%% {max_queue, N} will exit the process with priority_shutdown
|
||||
%% - You can limit the time processing a message (TODO): If the
|
||||
%% message processing does not return in a given period of time, the
|
||||
%% process will be terminated.
|
||||
|
|
@ -123,7 +123,7 @@
|
|||
sync_send_all_state_event/2, sync_send_all_state_event/3,
|
||||
reply/2,
|
||||
start_timer/2,send_event_after/2,cancel_timer/1,
|
||||
enter_loop/4, enter_loop/5, enter_loop/6]).
|
||||
enter_loop/4, enter_loop/5, enter_loop/6, wake_hib/7]).
|
||||
|
||||
-export([behaviour_info/1]).
|
||||
|
||||
|
|
@ -273,8 +273,11 @@ enter_loop(Mod, Options, StateName, StateData, ServerName, Timeout) ->
|
|||
Name = get_proc_name(ServerName),
|
||||
Parent = get_parent(),
|
||||
Debug = gen:debug_options(Options),
|
||||
Limits= limit_options(Options),
|
||||
loop(Parent, Name, StateName, StateData, Mod, Timeout, Debug, Limits).
|
||||
Limits = limit_options(Options),
|
||||
Queue = queue:new(),
|
||||
QueueLen = 0,
|
||||
loop(Parent, Name, StateName, StateData, Mod, Timeout, Debug,
|
||||
Limits, Queue, QueueLen).
|
||||
|
||||
get_proc_name(Pid) when is_pid(Pid) ->
|
||||
Pid;
|
||||
|
|
@ -329,16 +332,19 @@ name_to_pid(Name) ->
|
|||
%%% ---------------------------------------------------
|
||||
init_it(Starter, self, Name, Mod, Args, Options) ->
|
||||
init_it(Starter, self(), Name, Mod, Args, Options);
|
||||
init_it(Starter, Parent, Name, Mod, Args, Options) ->
|
||||
init_it(Starter, Parent, Name0, Mod, Args, Options) ->
|
||||
Name = name(Name0),
|
||||
Debug = gen:debug_options(Options),
|
||||
Limits= limit_options(Options),
|
||||
Limits = limit_options(Options),
|
||||
Queue = queue:new(),
|
||||
QueueLen = 0,
|
||||
case catch Mod:init(Args) of
|
||||
{ok, StateName, StateData} ->
|
||||
proc_lib:init_ack(Starter, {ok, self()}),
|
||||
loop(Parent, Name, StateName, StateData, Mod, infinity, Debug, Limits);
|
||||
loop(Parent, Name, StateName, StateData, Mod, infinity, Debug, Limits, Queue, QueueLen);
|
||||
{ok, StateName, StateData, Timeout} ->
|
||||
proc_lib:init_ack(Starter, {ok, self()}),
|
||||
loop(Parent, Name, StateName, StateData, Mod, Timeout, Debug, Limits);
|
||||
loop(Parent, Name, StateName, StateData, Mod, Timeout, Debug, Limits, Queue, QueueLen);
|
||||
{stop, Reason} ->
|
||||
proc_lib:init_ack(Starter, {error, Reason}),
|
||||
exit(Reason);
|
||||
|
|
@ -354,13 +360,35 @@ init_it(Starter, Parent, Name, Mod, Args, Options) ->
|
|||
exit(Error)
|
||||
end.
|
||||
|
||||
name({local,Name}) -> Name;
|
||||
name({global,Name}) -> Name;
|
||||
name(Pid) when is_pid(Pid) -> Pid.
|
||||
|
||||
%%-----------------------------------------------------------------
|
||||
%% The MAIN loop
|
||||
%%-----------------------------------------------------------------
|
||||
loop(Parent, Name, StateName, StateData, Mod, hibernate, Debug,
|
||||
Limits, Queue, QueueLen)
|
||||
when QueueLen > 0 ->
|
||||
case queue:out(Queue) of
|
||||
{{value, Msg}, Queue1} ->
|
||||
decode_msg(Msg, Parent, Name, StateName, StateData, Mod, hibernate,
|
||||
Debug, Limits, Queue1, QueueLen - 1, false);
|
||||
{empty, _} ->
|
||||
Reason = internal_queue_error,
|
||||
error_info(Reason, Name, hibernate, StateName, StateData, Debug),
|
||||
exit(Reason)
|
||||
end;
|
||||
loop(Parent, Name, StateName, StateData, Mod, hibernate, Debug,
|
||||
Limits, _Queue, _QueueLen) ->
|
||||
proc_lib:hibernate(?MODULE,wake_hib,
|
||||
[Parent, Name, StateName, StateData, Mod,
|
||||
Debug, Limits]);
|
||||
%% First we test if we have reach a defined limit ...
|
||||
loop(Parent, Name, StateName, StateData, Mod, Time, Debug, Limits) ->
|
||||
loop(Parent, Name, StateName, StateData, Mod, Time, Debug,
|
||||
Limits, Queue, QueueLen) ->
|
||||
try
|
||||
message_queue_len(Limits)
|
||||
message_queue_len(Limits, QueueLen)
|
||||
%% TODO: We can add more limit checking here...
|
||||
catch
|
||||
{process_limit, Limit} ->
|
||||
|
|
@ -369,54 +397,89 @@ loop(Parent, Name, StateName, StateData, Mod, Time, Debug, Limits) ->
|
|||
terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug)
|
||||
end,
|
||||
process_message(Parent, Name, StateName, StateData,
|
||||
Mod, Time, Debug, Limits).
|
||||
Mod, Time, Debug, Limits, Queue, QueueLen).
|
||||
%% ... then we can process a new message:
|
||||
process_message(Parent, Name, StateName, StateData, Mod, Time, Debug, Limits) ->
|
||||
process_message(Parent, Name, StateName, StateData, Mod, Time, Debug,
|
||||
Limits, Queue, QueueLen) ->
|
||||
{Msg, Queue1, QueueLen1} = collect_messages(Queue, QueueLen, Time),
|
||||
decode_msg(Msg,Parent, Name, StateName, StateData, Mod, Time,
|
||||
Debug, Limits, Queue1, QueueLen1, false).
|
||||
|
||||
collect_messages(Queue, QueueLen, Time) ->
|
||||
receive
|
||||
Input ->
|
||||
case Input of
|
||||
{'EXIT', _Parent, priority_shutdown} ->
|
||||
{Input, Queue, QueueLen};
|
||||
_ ->
|
||||
collect_messages(
|
||||
queue:in(Input, Queue), QueueLen + 1, Time)
|
||||
end
|
||||
after 0 ->
|
||||
case queue:out(Queue) of
|
||||
{{value, Msg}, Queue1} ->
|
||||
{Msg, Queue1, QueueLen - 1};
|
||||
{empty, _} ->
|
||||
receive
|
||||
Input ->
|
||||
{Input, Queue, QueueLen}
|
||||
after Time ->
|
||||
{{'$gen_event', timeout}, Queue, QueueLen}
|
||||
end
|
||||
end
|
||||
end.
|
||||
|
||||
|
||||
wake_hib(Parent, Name, StateName, StateData, Mod, Debug,
|
||||
Limits) ->
|
||||
Msg = receive
|
||||
{'EXIT', Parent, priority_shutdown} ->
|
||||
{'EXIT', Parent, priority_shutdown}
|
||||
after 0 ->
|
||||
receive
|
||||
Input ->
|
||||
Input
|
||||
after Time ->
|
||||
{'$gen_event', timeout}
|
||||
end
|
||||
Input ->
|
||||
Input
|
||||
end,
|
||||
Queue = queue:new(),
|
||||
QueueLen = 0,
|
||||
decode_msg(Msg, Parent, Name, StateName, StateData, Mod, hibernate,
|
||||
Debug, Limits, Queue, QueueLen, true).
|
||||
|
||||
decode_msg(Msg,Parent, Name, StateName, StateData, Mod, Time, Debug,
|
||||
Limits, Queue, QueueLen, Hib) ->
|
||||
put('$internal_queue_len', QueueLen),
|
||||
case Msg of
|
||||
{system, From, Req} ->
|
||||
sys:handle_system_msg(Req, From, Parent, ?MODULE, Debug,
|
||||
[Name, StateName, StateData,
|
||||
Mod, Time, Limits]);
|
||||
Mod, Time, Limits, Queue, QueueLen], Hib);
|
||||
{'EXIT', Parent, Reason} ->
|
||||
terminate(Reason, Name, Msg, Mod, StateName, StateData, Debug);
|
||||
_Msg when Debug == [] ->
|
||||
handle_msg(Msg, Parent, Name, StateName, StateData,
|
||||
Mod, Time, Limits);
|
||||
Mod, Time, Limits, Queue, QueueLen);
|
||||
_Msg ->
|
||||
Debug1 = sys:handle_debug(Debug, {?MODULE, print_event},
|
||||
{Name, StateName}, {in, Msg}),
|
||||
handle_msg(Msg, Parent, Name, StateName, StateData,
|
||||
Mod, Time, Debug1, Limits)
|
||||
Mod, Time, Debug1, Limits, Queue, QueueLen)
|
||||
end.
|
||||
|
||||
%%-----------------------------------------------------------------
|
||||
%% Callback functions for system messages handling.
|
||||
%%-----------------------------------------------------------------
|
||||
%% TODO: Fix me
|
||||
system_continue(Parent, Debug, [Name, StateName, StateData,
|
||||
Mod, Time, Limits]) ->
|
||||
loop(Parent, Name, StateName, StateData, Mod, Time, Debug, Limits).
|
||||
Mod, Time, Limits, Queue, QueueLen]) ->
|
||||
loop(Parent, Name, StateName, StateData, Mod, Time, Debug,
|
||||
Limits, Queue, QueueLen).
|
||||
|
||||
system_terminate(Reason, _Parent, Debug,
|
||||
[Name, StateName, StateData, Mod, _Time, _Limits]) ->
|
||||
terminate(Reason, Name, [], Mod, StateName, StateData, Debug).
|
||||
|
||||
system_code_change([Name, StateName, StateData, Mod, Time, Limits],
|
||||
system_code_change([Name, StateName, StateData, Mod, Time,
|
||||
Limits, Queue, QueueLen],
|
||||
_Module, OldVsn, Extra) ->
|
||||
case catch Mod:code_change(OldVsn, StateName, StateData, Extra) of
|
||||
{ok, NewStateName, NewStateData} ->
|
||||
{ok, [Name, NewStateName, NewStateData, Mod, Time, Limits]};
|
||||
{ok, [Name, NewStateName, NewStateData, Mod, Time,
|
||||
Limits, Queue, QueueLen]};
|
||||
Else -> Else
|
||||
end.
|
||||
|
||||
|
|
@ -453,24 +516,27 @@ print_event(Dev, return, {Name, StateName}) ->
|
|||
io:format(Dev, "*DBG* ~p switched to state ~w~n",
|
||||
[Name, StateName]).
|
||||
|
||||
handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, Limits) -> %No debug here
|
||||
handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time,
|
||||
Limits, Queue, QueueLen) -> %No debug here
|
||||
From = from(Msg),
|
||||
case catch dispatch(Msg, Mod, StateName, StateData) of
|
||||
{next_state, NStateName, NStateData} ->
|
||||
loop(Parent, Name, NStateName, NStateData,
|
||||
Mod, infinity, [], Limits);
|
||||
Mod, infinity, [], Limits, Queue, QueueLen);
|
||||
{next_state, NStateName, NStateData, Time1} ->
|
||||
loop(Parent, Name, NStateName, NStateData, Mod, Time1, [], Limits);
|
||||
{reply, Reply, NStateName, NStateData} when From /= undefined ->
|
||||
loop(Parent, Name, NStateName, NStateData, Mod, Time1, [],
|
||||
Limits, Queue, QueueLen);
|
||||
{reply, Reply, NStateName, NStateData} when From =/= undefined ->
|
||||
reply(From, Reply),
|
||||
loop(Parent, Name, NStateName, NStateData,
|
||||
Mod, infinity, [], Limits);
|
||||
{reply, Reply, NStateName, NStateData, Time1} when From /= undefined ->
|
||||
Mod, infinity, [], Limits, Queue, QueueLen);
|
||||
{reply, Reply, NStateName, NStateData, Time1} when From =/= undefined ->
|
||||
reply(From, Reply),
|
||||
loop(Parent, Name, NStateName, NStateData, Mod, Time1, [], Limits);
|
||||
loop(Parent, Name, NStateName, NStateData, Mod, Time1, [],
|
||||
Limits, Queue, QueueLen);
|
||||
{stop, Reason, NStateData} ->
|
||||
terminate(Reason, Name, Msg, Mod, StateName, NStateData, []);
|
||||
{stop, Reason, Reply, NStateData} when From /= undefined ->
|
||||
{stop, Reason, Reply, NStateData} when From =/= undefined ->
|
||||
{'EXIT', R} = (catch terminate(Reason, Name, Msg, Mod,
|
||||
StateName, NStateData, [])),
|
||||
reply(From, Reply),
|
||||
|
|
@ -483,30 +549,30 @@ handle_msg(Msg, Parent, Name, StateName, StateData, Mod, _Time, Limits) -> %No d
|
|||
end.
|
||||
|
||||
handle_msg(Msg, Parent, Name, StateName, StateData,
|
||||
Mod, _Time, Debug, Limits) ->
|
||||
Mod, _Time, Debug, Limits, Queue, QueueLen) ->
|
||||
From = from(Msg),
|
||||
case catch dispatch(Msg, Mod, StateName, StateData) of
|
||||
{next_state, NStateName, NStateData} ->
|
||||
Debug1 = sys:handle_debug(Debug, {?MODULE, print_event},
|
||||
{Name, NStateName}, return),
|
||||
loop(Parent, Name, NStateName, NStateData,
|
||||
Mod, infinity, Debug1, Limits);
|
||||
Mod, infinity, Debug1, Limits, Queue, QueueLen);
|
||||
{next_state, NStateName, NStateData, Time1} ->
|
||||
Debug1 = sys:handle_debug(Debug, {?MODULE, print_event},
|
||||
{Name, NStateName}, return),
|
||||
loop(Parent, Name, NStateName, NStateData,
|
||||
Mod, Time1, Debug1, Limits);
|
||||
{reply, Reply, NStateName, NStateData} when From /= undefined ->
|
||||
Mod, Time1, Debug1, Limits, Queue, QueueLen);
|
||||
{reply, Reply, NStateName, NStateData} when From =/= undefined ->
|
||||
Debug1 = reply(Name, From, Reply, Debug, NStateName),
|
||||
loop(Parent, Name, NStateName, NStateData,
|
||||
Mod, infinity, Debug1, Limits);
|
||||
{reply, Reply, NStateName, NStateData, Time1} when From /= undefined ->
|
||||
Mod, infinity, Debug1, Limits, Queue, QueueLen);
|
||||
{reply, Reply, NStateName, NStateData, Time1} when From =/= undefined ->
|
||||
Debug1 = reply(Name, From, Reply, Debug, NStateName),
|
||||
loop(Parent, Name, NStateName, NStateData,
|
||||
Mod, Time1, Debug1, Limits);
|
||||
Mod, Time1, Debug1, Limits, Queue, QueueLen);
|
||||
{stop, Reason, NStateData} ->
|
||||
terminate(Reason, Name, Msg, Mod, StateName, NStateData, Debug);
|
||||
{stop, Reason, Reply, NStateData} when From /= undefined ->
|
||||
{stop, Reason, Reply, NStateData} when From =/= undefined ->
|
||||
{'EXIT', R} = (catch terminate(Reason, Name, Msg, Mod,
|
||||
StateName, NStateData, Debug)),
|
||||
reply(Name, From, Reply, Debug, StateName),
|
||||
|
|
@ -671,13 +737,13 @@ limit_options([_|Options], Limits) ->
|
|||
|
||||
%% Throw max_queue if we have reach the max queue size
|
||||
%% Returns ok otherwise
|
||||
message_queue_len(#limits{max_queue = undefined}) ->
|
||||
message_queue_len(#limits{max_queue = undefined}, _QueueLen) ->
|
||||
ok;
|
||||
message_queue_len(#limits{max_queue = MaxQueue}) ->
|
||||
message_queue_len(#limits{max_queue = MaxQueue}, QueueLen) ->
|
||||
Pid = self(),
|
||||
case process_info(Pid, message_queue_len) of
|
||||
{message_queue_len, N} when N > MaxQueue ->
|
||||
throw({process_limit, {max_queue, N}});
|
||||
{message_queue_len, N} when N + QueueLen > MaxQueue ->
|
||||
throw({process_limit, {max_queue, N + QueueLen}});
|
||||
_ ->
|
||||
ok
|
||||
end.
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user