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%% -*- erlang-indent-level: 2 -*-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Copyright (c) 2002 by Erik Johansson.
%% ====================================================================
%% Filename : hipe_jit.erl
%% Module : hipe_jit
%% Purpose :
%% Notes :
%% History : * 2002-03-14 Erik Johansson (happi@csd.uu.se): Created.
%% CVS :
%% $Author: kostis $
%% $Date: 2004/01/31 00:38:38 $
%% $Revision: 1.2 $
%% ====================================================================
%% @doc
%% A tool to enable using the HiPE compiler as an automatic JIT
%% compiler rather than a user-controlled one.
%% @end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-module(hipe_jit).
-export([start/0]).
-record(state,{mode=start,threshold=5000,sleep=5000,time=1000}).
%% @spec start() -> pid()
%%
%% @doc
%% Starts an Erlang process which calls the HiPE compiler every
%% now and then (when it sees it fit to do so).
%% @end
start() ->
spawn(fun() ->
loop(#state{})
end).
loop(State) ->
case State#state.mode of
start ->
start(State);
wait ->
wait(State);
_ ->
sleep(State)
end.
sleep(State) ->
receive
quit -> ok
after State#state.sleep ->
loop(State#state{mode=start})
end.
start(State) ->
catch hipe_profile:prof(),
catch hipe_profile:clear(),
loop(State#state{mode=wait}).
wait(State) ->
receive
quit -> ok
after State#state.time ->
R = [M || {M,C} <- (catch hipe_profile:mods_res()),
C > State#state.threshold],
catch hipe_profile:prof_off(),
lists:foreach(fun(M) ->
io:format("Compile ~w\n",[M]),
hipe:c(M,[o2,verbose])
end, R)
end,
loop(State#state{mode=sleep}).
|
