diff options
Diffstat (limited to 'lib/stdlib/src/proc_lib.erl')
| -rw-r--r-- | lib/stdlib/src/proc_lib.erl | 100 |
1 files changed, 70 insertions, 30 deletions
diff --git a/lib/stdlib/src/proc_lib.erl b/lib/stdlib/src/proc_lib.erl index 02bcbb5a60..1eb6fc2e86 100644 --- a/lib/stdlib/src/proc_lib.erl +++ b/lib/stdlib/src/proc_lib.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2013. 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 @@ -29,7 +29,8 @@ start/3, start/4, start/5, start_link/3, start_link/4, start_link/5, hibernate/3, init_ack/1, init_ack/2, - init_p/3,init_p/5,format/1,initial_call/1,translate_initial_call/1]). + init_p/3,init_p/5,format/1,format/2,initial_call/1, + translate_initial_call/1]). %% Internal exports. -export([wake_up/3]). @@ -184,6 +185,17 @@ check_for_monitor(SpawnOpts) -> false end. +spawn_mon(M,F,A) -> + Parent = get_my_name(), + Ancestors = get_ancestors(), + erlang:spawn_monitor(?MODULE, init_p, [Parent,Ancestors,M,F,A]). + +spawn_opt_mon(M, F, A, Opts) when is_atom(M), is_atom(F), is_list(A) -> + Parent = get_my_name(), + Ancestors = get_ancestors(), + check_for_monitor(Opts), + erlang:spawn_opt(?MODULE, init_p, [Parent,Ancestors,M,F,A], [monitor|Opts]). + -spec hibernate(Module, Function, Args) -> no_return() when Module :: module(), Function :: atom(), @@ -270,8 +282,8 @@ start(M, F, A) when is_atom(M), is_atom(F), is_list(A) -> Ret :: term() | {error, Reason :: term()}. start(M, F, A, Timeout) when is_atom(M), is_atom(F), is_list(A) -> - Pid = ?MODULE:spawn(M, F, A), - sync_wait(Pid, Timeout). + PidRef = spawn_mon(M, F, A), + sync_wait_mon(PidRef, Timeout). -spec start(Module, Function, Args, Time, SpawnOpts) -> Ret when Module :: module(), @@ -282,8 +294,8 @@ start(M, F, A, Timeout) when is_atom(M), is_atom(F), is_list(A) -> Ret :: term() | {error, Reason :: term()}. start(M, F, A, Timeout, SpawnOpts) when is_atom(M), is_atom(F), is_list(A) -> - Pid = ?MODULE:spawn_opt(M, F, A, SpawnOpts), - sync_wait(Pid, Timeout). + PidRef = spawn_opt_mon(M, F, A, SpawnOpts), + sync_wait_mon(PidRef, Timeout). -spec start_link(Module, Function, Args) -> Ret when Module :: module(), @@ -330,6 +342,23 @@ sync_wait(Pid, Timeout) -> {error, timeout} end. +sync_wait_mon({Pid, Ref}, Timeout) -> + receive + {ack, Pid, Return} -> + erlang:demonitor(Ref, [flush]), + Return; + {'DOWN', Ref, _Type, Pid, Reason} -> + {error, Reason}; + {'EXIT', Pid, Reason} -> %% link as spawn_opt? + erlang:demonitor(Ref, [flush]), + {error, Reason} + after Timeout -> + erlang:demonitor(Ref, [flush]), + exit(Pid, kill), + flush(Pid), + {error, timeout} + end. + -spec flush(pid()) -> 'true'. flush(Pid) -> @@ -664,34 +693,41 @@ check(Res) -> Res. -spec format(CrashReport) -> string() when CrashReport :: [term()]. - -format([OwnReport,LinkReport]) -> - OwnFormat = format_report(OwnReport), - LinkFormat = format_report(LinkReport), - S = io_lib:format(" crasher:~n~s neighbours:~n~s",[OwnFormat,LinkFormat]), - lists:flatten(S). - -format_report(Rep) when is_list(Rep) -> - format_rep(Rep); -format_report(Rep) -> - io_lib:format("~p~n", [Rep]). - -format_rep([{initial_call,InitialCall}|Rep]) -> - [format_mfa(InitialCall)|format_rep(Rep)]; -format_rep([{error_info,{Class,Reason,StackTrace}}|Rep]) -> - [format_exception(Class, Reason, StackTrace)|format_rep(Rep)]; -format_rep([{Tag,Data}|Rep]) -> - [format_tag(Tag, Data)|format_rep(Rep)]; -format_rep(_) -> +format(CrashReport) -> + format(CrashReport, latin1). + +-spec format(CrashReport, Encoding) -> string() when + CrashReport :: [term()], + Encoding :: latin1 | unicode | utf8. + +format([OwnReport,LinkReport], Encoding) -> + OwnFormat = format_report(OwnReport, Encoding), + LinkFormat = format_report(LinkReport, Encoding), + Str = io_lib:format(" crasher:~n~ts neighbours:~n~ts", + [OwnFormat, LinkFormat]), + lists:flatten(Str). + +format_report(Rep, Enc) when is_list(Rep) -> + format_rep(Rep,Enc); +format_report(Rep, Enc) -> + io_lib:format("~"++modifier(Enc)++"p~n", [Rep]). + +format_rep([{initial_call,InitialCall}|Rep], Enc) -> + [format_mfa(InitialCall)|format_rep(Rep, Enc)]; +format_rep([{error_info,{Class,Reason,StackTrace}}|Rep], Enc) -> + [format_exception(Class, Reason, StackTrace, Enc)|format_rep(Rep, Enc)]; +format_rep([{Tag,Data}|Rep], Enc) -> + [format_tag(Tag, Data)|format_rep(Rep, Enc)]; +format_rep(_, _Enc) -> []. -format_exception(Class, Reason, StackTrace) -> - PF = pp_fun(), +format_exception(Class, Reason, StackTrace, Enc) -> + PF = pp_fun(Enc), StackFun = fun(M, _F, _A) -> (M =:= erl_eval) or (M =:= ?MODULE) end, %% EI = " exception: ", EI = " ", [EI, lib:format_exception(1+length(EI), Class, Reason, - StackTrace, StackFun, PF), "\n"]. + StackTrace, StackFun, PF, Enc), "\n"]. format_mfa({M,F,Args}=StartF) -> try @@ -703,10 +739,14 @@ format_mfa({M,F,Args}=StartF) -> format_tag(initial_call, StartF) end. -pp_fun() -> +pp_fun(Enc) -> + P = modifier(Enc) ++ "p", fun(Term, I) -> - io_lib:format("~." ++ integer_to_list(I) ++ "p", [Term]) + io_lib:format("~." ++ integer_to_list(I) ++ P, [Term]) end. format_tag(Tag, Data) -> io_lib:format(" ~p: ~80.18p~n", [Tag, Data]). + +modifier(latin1) -> ""; +modifier(_) -> "t". |