diff options
Diffstat (limited to 'lib/kernel/src')
| -rw-r--r-- | lib/kernel/src/code.erl | 121 | ||||
| -rw-r--r-- | lib/kernel/src/code_server.erl | 597 | ||||
| -rw-r--r-- | lib/kernel/src/disk_log.erl | 68 | ||||
| -rw-r--r-- | lib/kernel/src/disk_log.hrl | 6 | ||||
| -rw-r--r-- | lib/kernel/src/erts_debug.erl | 17 | ||||
| -rw-r--r-- | lib/kernel/src/global.erl | 40 | ||||
| -rw-r--r-- | lib/kernel/src/global_group.erl | 4 | ||||
| -rw-r--r-- | lib/kernel/src/inet_config.erl | 3 | ||||
| -rw-r--r-- | lib/kernel/src/kernel.erl | 8 | ||||
| -rw-r--r-- | lib/kernel/src/os.erl | 209 |
10 files changed, 250 insertions, 823 deletions
diff --git a/lib/kernel/src/code.erl b/lib/kernel/src/code.erl index 7237550786..59e226df43 100644 --- a/lib/kernel/src/code.erl +++ b/lib/kernel/src/code.erl @@ -60,7 +60,7 @@ del_path/1, replace_path/2, rehash/0, - start_link/0, start_link/1, + start_link/0, which/1, where_is_file/1, where_is_file/2, @@ -68,6 +68,8 @@ clash/0, get_mode/0]). +-deprecated({rehash,0,next_major_release}). + -export_type([load_error_rsn/0, load_ret/0]). -include_lib("kernel/include/file.hrl"). @@ -294,7 +296,9 @@ replace_path(Name, Dir) when (is_atom(Name) orelse is_list(Name)), call({replace_path,Name,Dir}). -spec rehash() -> 'ok'. -rehash() -> call(rehash). +rehash() -> + cache_warning(), + ok. -spec get_mode() -> 'embedded' | 'interactive'. get_mode() -> call(get_mode). @@ -302,15 +306,11 @@ get_mode() -> call(get_mode). %%----------------------------------------------------------------- call(Req) -> - code_server:call(code_server, Req). + code_server:call(Req). -spec start_link() -> {'ok', pid()} | {'error', 'crash'}. start_link() -> - start_link([stick]). - --spec start_link(Flags :: [atom()]) -> {'ok', pid()} | {'error', 'crash'}. -start_link(Flags) -> - do_start(Flags). + do_start(). %%----------------------------------------------------------------- %% In the init phase, code must not use any modules not yet loaded, @@ -322,35 +322,21 @@ start_link(Flags) -> %% us, so the module is loaded. %%----------------------------------------------------------------- -do_start(Flags) -> +do_start() -> + maybe_warn_for_cache(), load_code_server_prerequisites(), - Mode = get_mode(Flags), - case init:get_argument(root) of - {ok,[[Root0]]} -> - Root = filename:join([Root0]), % Normalize. Use filename - case code_server:start_link([Root,Mode]) of - {ok,_Pid} = Ok2 -> - if - Mode =:= interactive -> - case lists:member(stick, Flags) of - true -> do_stick_dirs(); - _ -> ok - end; - true -> - ok - end, - %% Quietly load native code for all modules loaded so far - Architecture = erlang:system_info(hipe_architecture), - load_native_code_for_all_loaded(Architecture), - Ok2; - Other -> - Other - end; - Other -> - error_logger:error_msg("Can not start code server ~w ~n", [Other]), - {error, crash} - end. + {ok,[[Root0]]} = init:get_argument(root), + Mode = start_get_mode(), + Root = filename:join([Root0]), % Normalize. + Res = code_server:start_link([Root,Mode]), + + maybe_stick_dirs(Mode), + + %% Quietly load native code for all modules loaded so far. + Architecture = erlang:system_info(hipe_architecture), + load_native_code_for_all_loaded(Architecture), + Res. %% Make sure that all modules that the code_server process calls %% (directly or indirectly) are loaded. Otherwise the code_server @@ -370,6 +356,16 @@ load_code_server_prerequisites() -> _ = [M = M:module_info(module) || M <- Needed], ok. +maybe_stick_dirs(interactive) -> + case init:get_argument(nostick) of + {ok,[[]]} -> + ok; + _ -> + do_stick_dirs() + end; +maybe_stick_dirs(_) -> + ok. + do_stick_dirs() -> do_s(compiler), do_s(stdlib), @@ -387,19 +383,12 @@ do_s(Lib) -> ok end. -get_mode(Flags) -> - case lists:member(embedded, Flags) of - true -> +start_get_mode() -> + case init:get_argument(mode) of + {ok,[["embedded"]]} -> embedded; - _Otherwise -> - case init:get_argument(mode) of - {ok,[["embedded"]]} -> - embedded; - {ok,[["minimal"]]} -> - minimal; - _Else -> - interactive - end + _ -> + interactive end. %% Find out which version of a particular module we would @@ -453,30 +442,14 @@ which(File, Base, [Directory|Tail]) -> Filename :: file:filename(), Absname :: file:filename(). where_is_file(File) when is_list(File) -> - case call({is_cached,File}) of - no -> - Path = get_path(), - which(File, ".", Path); - Dir -> - filename:join(Dir, File) - end. + Path = get_path(), + which(File, ".", Path). -spec where_is_file(Path :: file:filename(), Filename :: file:filename()) -> file:filename() | 'non_existing'. where_is_file(Path, File) when is_list(Path), is_list(File) -> - CodePath = get_path(), - if - Path =:= CodePath -> - case call({is_cached, File}) of - no -> - which(File, ".", Path); - Dir -> - filename:join(Dir, File) - end; - true -> - which(File, ".", Path) - end. + which(File, ".", Path). -spec set_primary_archive(ArchiveFile :: file:filename(), ArchiveBin :: binary(), @@ -554,6 +527,22 @@ has_ext(Ext, Extlen, File) -> end. %%% +%%% Warning for deprecated code path cache. +%%% + +maybe_warn_for_cache() -> + case init:get_argument(code_path_cache) of + {ok, _} -> + cache_warning(); + error -> + ok + end. + +cache_warning() -> + W = "The code path cache functionality has been removed", + error_logger:warning_report(W). + +%%% %%% Silently load native code for all modules loaded so far. %%% diff --git a/lib/kernel/src/code_server.erl b/lib/kernel/src/code_server.erl index 614219794c..b52def8777 100644 --- a/lib/kernel/src/code_server.erl +++ b/lib/kernel/src/code_server.erl @@ -22,9 +22,7 @@ %% This file holds the server part of the code_server. -export([start_link/1, - call/2, - system_continue/3, - system_terminate/4, + call/1, system_code_change/4, error_msg/2, info_msg/2 ]). @@ -35,16 +33,18 @@ -define(ANY_NATIVE_CODE_LOADED, any_native_code_loaded). --record(state, {supervisor, - root, - path, - moddb, - namedb, - cache = no_cache, - mode = interactive, - on_load = []}). +-type on_load_item() :: {reference(),module(),file:name_all(),[pid()]}. + +-record(state, {supervisor :: pid(), + root :: file:name_all(), + path :: [file:name_all()], + moddb :: ets:tab(), + namedb :: ets:tab(), + mode = interactive :: 'interactive' | 'embedded', + on_load = [] :: [on_load_item()]}). -type state() :: #state{}. +-spec start_link([term()]) -> {'ok', pid()}. start_link(Args) -> Ref = make_ref(), Parent = self(), @@ -59,7 +59,7 @@ start_link(Args) -> %% Init the code_server process. %% ----------------------------------------------------------- -init(Ref, Parent, [Root,Mode0]) -> +init(Ref, Parent, [Root,Mode]) -> register(?MODULE, self()), process_flag(trap_exit, true), @@ -70,12 +70,6 @@ init(Ref, Parent, [Root,Mode0]) -> end, erlang:pre_loaded()), ets:insert(Db, init:fetch_loaded()), - Mode = - case Mode0 of - minimal -> interactive; - _ -> Mode0 - end, - IPath = case Mode of interactive -> @@ -89,24 +83,17 @@ init(Ref, Parent, [Root,Mode0]) -> end, Path = add_loader_path(IPath, Mode), - State0 = #state{root = Root, - path = Path, - moddb = Db, - namedb = init_namedb(Path), - mode = Mode}, - - State = - case init:get_argument(code_path_cache) of - {ok, _} -> - create_cache(State0); - error -> - State0 - end, + State = #state{supervisor = Parent, + root = Root, + path = Path, + moddb = Db, + namedb = init_namedb(Path), + mode = Mode}, put(?ANY_NATIVE_CODE_LOADED, false), Parent ! {Ref,{ok,self()}}, - loop(State#state{supervisor = Parent}). + loop(State). get_user_lib_dirs() -> case os:getenv("ERL_LIBS") of @@ -142,8 +129,9 @@ split_paths([C|T], S, Path, Paths) -> split_paths([], _S, Path, Paths) -> lists:reverse(Paths, [lists:reverse(Path)]). -call(Name, Req) -> - Name ! {code_call, self(), Req}, +-spec call(term()) -> term(). +call(Req) -> + ?MODULE ! {code_call, self(), Req}, receive {?MODULE, Reply} -> Reply @@ -255,59 +243,33 @@ handle_call({dir,Dir}, {_From,_Tag}, S) -> Resp = do_dir(Root,Dir,S#state.namedb), {reply,Resp,S}; -handle_call({load_file,Mod}, Caller, St) -> - case modp(Mod) of - false -> - {reply,{error,badarg},St}; - true -> - load_file(Mod, Caller, St) - end; +handle_call({load_file,Mod}, Caller, St) when is_atom(Mod) -> + load_file(Mod, Caller, St); handle_call({add_path,Where,Dir0}, {_From,_Tag}, - #state{cache=Cache0,namedb=Namedb,path=Path0}=S) -> - case Cache0 of - no_cache -> - {Resp,Path} = add_path(Where, Dir0, Path0, Namedb), - {reply,Resp,S#state{path=Path}}; - _ -> - Dir = absname(Dir0), %% Cache always expands the path - {Resp,Path} = add_path(Where, Dir, Path0, Namedb), - Cache = update_cache([Dir], Where, Cache0), - {reply,Resp,S#state{path=Path,cache=Cache}} - end; + #state{namedb=Namedb,path=Path0}=S) -> + {Resp,Path} = add_path(Where, Dir0, Path0, Namedb), + {reply,Resp,S#state{path=Path}}; handle_call({add_paths,Where,Dirs0}, {_From,_Tag}, - #state{cache=Cache0,namedb=Namedb,path=Path0}=S) -> - case Cache0 of - no_cache -> - {Resp,Path} = add_paths(Where, Dirs0, Path0, Namedb), - {reply,Resp,S#state{path=Path}}; - _ -> - %% Cache always expands the path - Dirs = [absname(Dir) || Dir <- Dirs0], - {Resp,Path} = add_paths(Where, Dirs, Path0, Namedb), - Cache=update_cache(Dirs,Where,Cache0), - {reply,Resp,S#state{cache=Cache,path=Path}} - end; + #state{namedb=Namedb,path=Path0}=S) -> + {Resp,Path} = add_paths(Where, Dirs0, Path0, Namedb), + {reply,Resp,S#state{path=Path}}; handle_call({set_path,PathList}, {_From,_Tag}, #state{path=Path0,namedb=Namedb}=S) -> {Resp,Path,NewDb} = set_path(PathList, Path0, Namedb), - {reply,Resp,rehash_cache(S#state{path=Path,namedb=NewDb})}; + {reply,Resp,S#state{path=Path,namedb=NewDb}}; handle_call({del_path,Name}, {_From,_Tag}, #state{path=Path0,namedb=Namedb}=S) -> {Resp,Path} = del_path(Name, Path0, Namedb), - {reply,Resp,rehash_cache(S#state{path=Path})}; + {reply,Resp,S#state{path=Path}}; handle_call({replace_path,Name,Dir}, {_From,_Tag}, #state{path=Path0,namedb=Namedb}=S) -> {Resp,Path} = replace_path(Name, Dir, Path0, Namedb), - {reply,Resp,rehash_cache(S#state{path=Path})}; - -handle_call(rehash, {_From,_Tag}, S0) -> - S = create_cache(S0), - {reply,ok,S}; + {reply,Resp,S#state{path=Path}}; handle_call(get_path, {_From,_Tag}, S) -> {reply,S#state.path,S}; @@ -321,7 +283,7 @@ handle_call({load_abs,File,Mod}, Caller, S) when is_atom(Mod) -> load_abs(File, Mod, Caller, S) end; -handle_call({load_binary,Mod,File,Bin}, Caller, S) -> +handle_call({load_binary,Mod,File,Bin}, Caller, S) when is_atom(Mod) -> do_load_binary(Mod, File, Bin, Caller, S); handle_call({load_native_partial,Mod,Bin}, {_From,_Tag}, S) -> @@ -337,59 +299,44 @@ handle_call({load_native_sticky,Mod,Bin,WholeModule}, {_From,_Tag}, S) -> Status = hipe_result_to_status(Result), {reply,Status,S}; -handle_call({ensure_loaded,Mod0}, Caller, St0) -> - Fun = fun (M, St) -> - case erlang:module_loaded(M) of - true -> - {reply,{module,M},St}; - false when St#state.mode =:= interactive -> - load_file(M, Caller, St); - false -> - {reply,{error,embedded},St} - end - end, - do_mod_call(Fun, Mod0, {error,badarg}, St0); - -handle_call({delete,Mod0}, {_From,_Tag}, S) -> - Fun = fun (M, St) -> - case catch erlang:delete_module(M) of - true -> - ets:delete(St#state.moddb, M), - {reply,true,St}; - _ -> - {reply,false,St} - end - end, - do_mod_call(Fun, Mod0, false, S); +handle_call({ensure_loaded,Mod}, Caller, St) when is_atom(Mod) -> + case erlang:module_loaded(Mod) of + true -> + {reply,{module,Mod},St}; + false when St#state.mode =:= interactive -> + load_file(Mod, Caller, St); + false -> + {reply,{error,embedded},St} + end; -handle_call({purge,Mod0}, {_From,_Tag}, St0) -> - do_mod_call(fun (M, St) -> - {reply,do_purge(M),St} - end, Mod0, false, St0); +handle_call({delete,Mod}, {_From,_Tag}, St) when is_atom(Mod) -> + case catch erlang:delete_module(Mod) of + true -> + ets:delete(St#state.moddb, Mod), + {reply,true,St}; + _ -> + {reply,false,St} + end; -handle_call({soft_purge,Mod0}, {_From,_Tag}, St0) -> - do_mod_call(fun (M, St) -> - {reply,do_soft_purge(M),St} - end, Mod0, true, St0); +handle_call({purge,Mod}, {_From,_Tag}, St) when is_atom(Mod) -> + {reply,do_purge(Mod),St}; -handle_call({is_loaded,Mod0}, {_From,_Tag}, St0) -> - do_mod_call(fun (M, St) -> - {reply,is_loaded(M, St#state.moddb),St} - end, Mod0, false, St0); +handle_call({soft_purge,Mod}, {_From,_Tag}, St) when is_atom(Mod) -> + {reply,do_soft_purge(Mod),St}; + +handle_call({is_loaded,Mod}, {_From,_Tag}, St) when is_atom(Mod) -> + {reply,is_loaded(Mod, St#state.moddb),St}; handle_call(all_loaded, {_From,_Tag}, S) -> Db = S#state.moddb, {reply,all_loaded(Db),S}; -handle_call({get_object_code,Mod0}, {_From,_Tag}, St0) -> - Fun = fun(M, St) -> - Path = St#state.path, - case mod_to_bin(Path, atom_to_list(M)) of - {_,Bin,FName} -> {reply,{M,Bin,FName},St}; - Error -> {reply,Error,St} - end - end, - do_mod_call(Fun, Mod0, error, St0); +handle_call({get_object_code,Mod}, {_From,_Tag}, St) when is_atom(Mod) -> + Path = St#state.path, + case mod_to_bin(Path, Mod) of + {_,Bin,FName} -> {reply,{Mod,Bin,FName},St}; + Error -> {reply,Error,St} + end; handle_call({is_sticky, Mod}, {_From,_Tag}, S) -> Db = S#state.moddb, @@ -398,9 +345,6 @@ handle_call({is_sticky, Mod}, {_From,_Tag}, S) -> handle_call(stop,{_From,_Tag}, S) -> {stop,normal,stopped,S}; -handle_call({is_cached,_File}, {_From,_Tag}, S=#state{cache=no_cache}) -> - {reply, no, S}; - handle_call({set_primary_archive, File, ArchiveBin, FileInfo, ParserFun}, {_From,_Tag}, S=#state{mode=Mode}) -> case erl_prim_loader:set_primary_archive(File, ArchiveBin, FileInfo, ParserFun) of {ok, Files} -> @@ -409,26 +353,6 @@ handle_call({set_primary_archive, File, ArchiveBin, FileInfo, ParserFun}, {_From {reply, Error, S} end; -handle_call({is_cached,File}, {_From,_Tag}, S=#state{cache=Cache}) -> - ObjExt = objfile_extension(), - Ext = filename:extension(File), - Type = case Ext of - ObjExt -> obj; - ".app" -> app; - _ -> undef - end, - if Type =:= undef -> - {reply, no, S}; - true -> - Key = {Type,list_to_atom(filename:rootname(File, Ext))}, - case ets:lookup(Cache, Key) of - [] -> - {reply, no, S}; - [{Key,Dir}] -> - {reply, Dir, S} - end - end; - handle_call(get_mode, {_From,_Tag}, S=#state{mode=Mode}) -> {reply, Mode, S}; @@ -436,80 +360,6 @@ handle_call(Other,{_From,_Tag}, S) -> error_msg(" ** Codeserver*** ignoring ~w~n ",[Other]), {noreply,S}. -do_mod_call(Action, Module, _Error, St) when is_atom(Module) -> - Action(Module, St); -do_mod_call(Action, Module, Error, St) -> - try list_to_atom(Module) of - Atom when is_atom(Atom) -> - Action(Atom, St) - catch - error:badarg -> - {reply,Error,St} - end. - -%% -------------------------------------------------------------- -%% Cache functions -%% -------------------------------------------------------------- - -create_cache(St = #state{cache = no_cache}) -> - Cache = ets:new(code_cache, [protected]), - rehash_cache(Cache, St); -create_cache(St) -> - rehash_cache(St). - -rehash_cache(St = #state{cache = no_cache}) -> - St; -rehash_cache(St = #state{cache = OldCache}) -> - ets:delete(OldCache), - Cache = ets:new(code_cache, [protected]), - rehash_cache(Cache, St). - -rehash_cache(Cache, St = #state{path = Path}) -> - Exts = [{obj,objfile_extension()}, {app,".app"}], - {Cache,NewPath} = locate_mods(lists:reverse(Path), first, Exts, Cache, []), - St#state{cache = Cache, path=NewPath}. - -update_cache(Dirs, Where, Cache0) -> - Exts = [{obj,objfile_extension()}, {app,".app"}], - {Cache, _} = locate_mods(Dirs, Where, Exts, Cache0, []), - Cache. - -locate_mods([Dir0|Path], Where, Exts, Cache, Acc) -> - Dir = absname(Dir0), %% Cache always expands the path - case erl_prim_loader:list_dir(Dir) of - {ok, Files} -> - Cache = filter_mods(Files, Where, Exts, Dir, Cache), - locate_mods(Path, Where, Exts, Cache, [Dir|Acc]); - error -> - locate_mods(Path, Where, Exts, Cache, Acc) - end; -locate_mods([], _, _, Cache, Path) -> - {Cache,Path}. - -filter_mods([File|Rest], Where, Exts, Dir, Cache) -> - Ext = filename:extension(File), - Root = list_to_atom(filename:rootname(File, Ext)), - case lists:keyfind(Ext, 2, Exts) of - {Type, _} -> - Key = {Type,Root}, - case Where of - first -> - true = ets:insert(Cache, {Key,Dir}); - last -> - case ets:lookup(Cache, Key) of - [] -> - true = ets:insert(Cache, {Key,Dir}); - _ -> - ignore - end - end; - false -> - ok - end, - filter_mods(Rest, Where, Exts, Dir, Cache); -filter_mods([], _, _, _, Cache) -> - Cache. - %% -------------------------------------------------------------- %% Path handling functions. %% -------------------------------------------------------------- @@ -1207,9 +1057,9 @@ add_paths(_,_,Path,_) -> {ok,Path}. do_load_binary(Module, File, Binary, Caller, St) -> - case modp(Module) andalso modp(File) andalso is_binary(Binary) of + case modp(File) andalso is_binary(Binary) of true -> - case erlang:module_loaded(to_atom(Module)) of + case erlang:module_loaded(Module) of true -> do_purge(Module); false -> ok end, @@ -1233,21 +1083,10 @@ load_abs(File, Mod, Caller, St) -> {reply,{error,nofile},St} end. -try_load_module(Mod, Dir, Caller, St) -> - File = filename:append(Dir, to_list(Mod) ++ - objfile_extension()), - case erl_prim_loader:get_file(File) of - error -> - {reply,error,St}; - {ok,Binary,FName} -> - try_load_module(absname(FName), Mod, Binary, Caller, St) - end. - try_load_module(File, Mod, Bin, {From,_}=Caller, St0) -> - M = to_atom(Mod), - case pending_on_load(M, From, St0) of + case pending_on_load(Mod, From, St0) of no -> - try_load_module_1(File, M, Bin, Caller, St0); + try_load_module_1(File, Mod, Bin, Caller, St0); {yes,St} -> {noreply,St} end. @@ -1266,9 +1105,10 @@ try_load_module_2(File, Mod, Bin, Caller, undefined, St) -> try_load_module_3(File, Mod, Bin, Caller, undefined, St); try_load_module_2(File, Mod, Bin, Caller, Architecture, #state{moddb=Db}=St) -> - case catch load_native_code(Mod, Bin, Architecture) of + case catch hipe_unified_loader:load_native_code(Mod, Bin, Architecture) of {module,Mod} = Module -> - ets:insert(Db, {Mod,File}), + put(?ANY_NATIVE_CODE_LOADED, true), + ets:insert(Db, {Mod,File}), {reply,Module,St}; no_native -> try_load_module_3(File, Mod, Bin, Caller, Architecture, St); @@ -1291,26 +1131,6 @@ try_load_module_3(File, Mod, Bin, Caller, Architecture, {reply,Error,St} end. -load_native_code(Mod, Bin, Architecture) -> - %% During bootstrapping of Open Source Erlang, we don't have any hipe - %% loader modules, but the Erlang emulator might be hipe enabled. - %% Therefore we must test for that the loader modules are available - %% before trying to to load native code. - case erlang:module_loaded(hipe_unified_loader) of - false -> - no_native; - true -> - Result = hipe_unified_loader:load_native_code(Mod, Bin, - Architecture), - case Result of - {module,_} -> - put(?ANY_NATIVE_CODE_LOADED, true); - _ -> - ok - end, - Result - end. - hipe_result_to_status(Result) -> case Result of {module,_} -> @@ -1333,37 +1153,22 @@ int_list([H|T]) when is_integer(H) -> int_list(T); int_list([_|_]) -> false; int_list([]) -> true. -load_file(Mod0, {From,_}=Caller, St0) -> - Mod = to_atom(Mod0), +load_file(Mod, {From,_}=Caller, St0) -> case pending_on_load(Mod, From, St0) of no -> load_file_1(Mod, Caller, St0); {yes,St} -> {noreply,St} end. -load_file_1(Mod, Caller, #state{path=Path,cache=no_cache}=St) -> +load_file_1(Mod, Caller, #state{path=Path}=St) -> case mod_to_bin(Path, Mod) of error -> {reply,{error,nofile},St}; {Mod,Binary,File} -> - try_load_module(File, Mod, Binary, Caller, St) - end; -load_file_1(Mod, Caller, #state{cache=Cache}=St0) -> - Key = {obj,Mod}, - case ets:lookup(Cache, Key) of - [] -> - St = rehash_cache(St0), - case ets:lookup(St#state.cache, Key) of - [] -> - {reply,{error,nofile},St}; - [{Key,Dir}] -> - try_load_module(Mod, Dir, Caller, St) - end; - [{Key,Dir}] -> - try_load_module(Mod, Dir, Caller, St0) + try_load_module_1(File, Mod, Binary, Caller, St) end. mod_to_bin([Dir|Tail], Mod) -> - File = filename:append(Dir, to_list(Mod) ++ objfile_extension()), + File = filename:append(Dir, atom_to_list(Mod) ++ objfile_extension()), case erl_prim_loader:get_file(File) of error -> mod_to_bin(Tail, Mod); @@ -1416,243 +1221,6 @@ absname_vr([[X, $:]|Name], _, _AbsBase) -> absname(filename:join(Name), Dcwd). -%% do_purge(Module) -%% Kill all processes running code from *old* Module, and then purge the -%% module. Return true if any processes killed, else false. - -do_purge(Mod0) -> - Mod = to_atom(Mod0), - case erlang:check_old_code(Mod) of - false -> - false; - true -> - Res = check_proc_code(erlang:processes(), Mod, true), - try - erlang:purge_module(Mod) - catch - _:_ -> ignore - end, - Res - end. - -%% do_soft_purge(Module) -%% Purge old code only if no procs remain that run old code. -%% Return true in that case, false if procs remain (in this -%% case old code is not purged) - -do_soft_purge(Mod0) -> - Mod = to_atom(Mod0), - case erlang:check_old_code(Mod) of - false -> - true; - true -> - case check_proc_code(erlang:processes(), Mod, false) of - false -> - false; - true -> - try - erlang:purge_module(Mod) - catch - _:_ -> ignore - end, - true - end - end. - -%% -%% check_proc_code(Pids, Mod, Hard) - Send asynchronous -%% requests to all processes to perform a check_process_code -%% operation. Each process will check their own state and -%% reply with the result. If 'Hard' equals -%% - true, processes that refer 'Mod' will be killed. If -%% any processes were killed true is returned; otherwise, -%% false. -%% - false, and any processes refer 'Mod', false will -%% returned; otherwise, true. -%% -%% Requests will be sent to all processes identified by -%% Pids at once, but without allowing GC to be performed. -%% Check process code operations that are aborted due to -%% GC need, will be restarted allowing GC. However, only -%% ?MAX_CPC_GC_PROCS outstanding operation allowing GC at -%% a time will be allowed. This in order not to blow up -%% memory wise. -%% -%% We also only allow ?MAX_CPC_NO_OUTSTANDING_KILLS -%% outstanding kills. This both in order to avoid flooding -%% our message queue with 'DOWN' messages and limiting the -%% amount of memory used to keep references to all -%% outstanding kills. -%% - -%% We maybe should allow more than two outstanding -%% GC requests, but for now we play it safe... --define(MAX_CPC_GC_PROCS, 2). --define(MAX_CPC_NO_OUTSTANDING_KILLS, 10). - --record(cpc_static, {hard, module, tag}). - --record(cpc_kill, {outstanding = [], - no_outstanding = 0, - waiting = [], - killed = false}). - -check_proc_code(Pids, Mod, Hard) -> - Tag = erlang:make_ref(), - CpcS = #cpc_static{hard = Hard, - module = Mod, - tag = Tag}, - check_proc_code(CpcS, cpc_init(CpcS, Pids, 0), 0, [], #cpc_kill{}, true). - -check_proc_code(#cpc_static{hard = true}, 0, 0, [], - #cpc_kill{outstanding = [], waiting = [], killed = Killed}, - true) -> - %% No outstanding requests. We did a hard check, so result is whether or - %% not we killed any processes... - Killed; -check_proc_code(#cpc_static{hard = false}, 0, 0, [], _KillState, Success) -> - %% No outstanding requests and we did a soft check... - Success; -check_proc_code(#cpc_static{hard = false, tag = Tag} = CpcS, NoReq0, NoGcReq0, - [], _KillState, false) -> - %% Failed soft check; just cleanup the remaining replies corresponding - %% to the requests we've sent... - {NoReq1, NoGcReq1} = receive - {check_process_code, {Tag, _P, GC}, _Res} -> - case GC of - false -> {NoReq0-1, NoGcReq0}; - true -> {NoReq0, NoGcReq0-1} - end - end, - check_proc_code(CpcS, NoReq1, NoGcReq1, [], _KillState, false); -check_proc_code(#cpc_static{tag = Tag} = CpcS, NoReq0, NoGcReq0, NeedGC0, - KillState0, Success) -> - - %% Check if we should request a GC operation - {NoGcReq1, NeedGC1} = case NoGcReq0 < ?MAX_CPC_GC_PROCS of - GcOpAllowed when GcOpAllowed == false; - NeedGC0 == [] -> - {NoGcReq0, NeedGC0}; - _ -> - {NoGcReq0+1, cpc_request_gc(CpcS,NeedGC0)} - end, - - %% Wait for a cpc reply or 'DOWN' message - {NoReq1, NoGcReq2, Pid, Result, KillState1} = cpc_recv(Tag, - NoReq0, - NoGcReq1, - KillState0), - - %% Check the result of the reply - case Result of - aborted -> - %% Operation aborted due to the need to GC in order to - %% determine if the process is referring the module. - %% Schedule the operation for restart allowing GC... - check_proc_code(CpcS, NoReq1, NoGcReq2, [Pid|NeedGC1], KillState1, - Success); - false -> - %% Process not referring the module; done with this process... - check_proc_code(CpcS, NoReq1, NoGcReq2, NeedGC1, KillState1, - Success); - true -> - %% Process referring the module... - case CpcS#cpc_static.hard of - false -> - %% ... and soft check. The whole operation failed so - %% no point continuing; clean up and fail... - check_proc_code(CpcS, NoReq1, NoGcReq2, [], KillState1, - false); - true -> - %% ... and hard check; schedule kill of it... - check_proc_code(CpcS, NoReq1, NoGcReq2, NeedGC1, - cpc_sched_kill(Pid, KillState1), Success) - end; - 'DOWN' -> - %% Handled 'DOWN' message - check_proc_code(CpcS, NoReq1, NoGcReq2, NeedGC1, - KillState1, Success) - end. - -cpc_recv(Tag, NoReq, NoGcReq, #cpc_kill{outstanding = []} = KillState) -> - receive - {check_process_code, {Tag, Pid, GC}, Res} -> - cpc_handle_cpc(NoReq, NoGcReq, GC, Pid, Res, KillState) - end; -cpc_recv(Tag, NoReq, NoGcReq, - #cpc_kill{outstanding = [R0, R1, R2, R3, R4 | _]} = KillState) -> - receive - {'DOWN', R, process, _, _} when R == R0; - R == R1; - R == R2; - R == R3; - R == R4 -> - cpc_handle_down(NoReq, NoGcReq, R, KillState); - {check_process_code, {Tag, Pid, GC}, Res} -> - cpc_handle_cpc(NoReq, NoGcReq, GC, Pid, Res, KillState) - end; -cpc_recv(Tag, NoReq, NoGcReq, #cpc_kill{outstanding = [R|_]} = KillState) -> - receive - {'DOWN', R, process, _, _} -> - cpc_handle_down(NoReq, NoGcReq, R, KillState); - {check_process_code, {Tag, Pid, GC}, Res} -> - cpc_handle_cpc(NoReq, NoGcReq, GC, Pid, Res, KillState) - end. - -cpc_handle_down(NoReq, NoGcReq, R, #cpc_kill{outstanding = Rs, - no_outstanding = N} = KillState) -> - {NoReq, NoGcReq, undefined, 'DOWN', - cpc_sched_kill_waiting(KillState#cpc_kill{outstanding = cpc_list_rm(R, Rs), - no_outstanding = N-1})}. - -cpc_list_rm(R, [R|Rs]) -> - Rs; -cpc_list_rm(R0, [R1|Rs]) -> - [R1|cpc_list_rm(R0, Rs)]. - -cpc_handle_cpc(NoReq, NoGcReq, false, Pid, Res, KillState) -> - {NoReq-1, NoGcReq, Pid, Res, KillState}; -cpc_handle_cpc(NoReq, NoGcReq, true, Pid, Res, KillState) -> - {NoReq, NoGcReq-1, Pid, Res, KillState}. - -cpc_sched_kill_waiting(#cpc_kill{waiting = []} = KillState) -> - KillState; -cpc_sched_kill_waiting(#cpc_kill{outstanding = Rs, - no_outstanding = N, - waiting = [P|Ps]} = KillState) -> - R = erlang:monitor(process, P), - exit(P, kill), - KillState#cpc_kill{outstanding = [R|Rs], - no_outstanding = N+1, - waiting = Ps, - killed = true}. - -cpc_sched_kill(Pid, #cpc_kill{no_outstanding = N, waiting = Pids} = KillState) - when N >= ?MAX_CPC_NO_OUTSTANDING_KILLS -> - KillState#cpc_kill{waiting = [Pid|Pids]}; -cpc_sched_kill(Pid, - #cpc_kill{outstanding = Rs, no_outstanding = N} = KillState) -> - R = erlang:monitor(process, Pid), - exit(Pid, kill), - KillState#cpc_kill{outstanding = [R|Rs], - no_outstanding = N+1, - killed = true}. - -cpc_request(#cpc_static{tag = Tag, module = Mod}, Pid, AllowGc) -> - erlang:check_process_code(Pid, Mod, [{async, {Tag, Pid, AllowGc}}, - {allow_gc, AllowGc}]). - -cpc_request_gc(CpcS, [Pid|Pids]) -> - cpc_request(CpcS, Pid, true), - Pids. - -cpc_init(_CpcS, [], NoReqs) -> - NoReqs; -cpc_init(CpcS, [Pid|Pids], NoReqs) -> - cpc_request(CpcS, Pid, false), - cpc_init(CpcS, Pids, NoReqs+1). - -% end of check_proc_code() implementation. is_loaded(M, Db) -> case ets:lookup(Db, M) of @@ -1660,6 +1228,14 @@ is_loaded(M, Db) -> [] -> false end. +do_purge(Mod) -> + {_WasOld, DidKill} = erts_code_purger:purge(Mod), + DidKill. + +do_soft_purge(Mod) -> + erts_code_purger:soft_purge(Mod). + + %% ------------------------------------------------------- %% The on_load functionality. %% ------------------------------------------------------- @@ -1754,13 +1330,13 @@ strip_mod_info([{{sticky,_},_}|T], Acc) -> strip_mod_info(T, Acc); strip_mod_info([H|T], Acc) -> strip_mod_info(T, [H|Acc]); strip_mod_info([], Acc) -> Acc. -% error_msg(Format) -> -% error_msg(Format,[]). +-spec error_msg(io:format(), [term()]) -> 'ok'. error_msg(Format, Args) -> Msg = {notify,{error, group_leader(), {self(), Format, Args}}}, error_logger ! Msg, ok. +-spec info_msg(io:format(), [term()]) -> 'ok'. info_msg(Format, Args) -> Msg = {notify,{info_msg, group_leader(), {self(), Format, Args}}}, error_logger ! Msg, @@ -1774,6 +1350,3 @@ archive_extension() -> to_list(X) when is_list(X) -> X; to_list(X) when is_atom(X) -> atom_to_list(X). - -to_atom(X) when is_atom(X) -> X; -to_atom(X) when is_list(X) -> list_to_atom(X). diff --git a/lib/kernel/src/disk_log.erl b/lib/kernel/src/disk_log.erl index f5450f30af..9b44021872 100644 --- a/lib/kernel/src/disk_log.erl +++ b/lib/kernel/src/disk_log.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2013. All Rights Reserved. +%% Copyright Ericsson AB 1997-2015. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -1310,13 +1310,20 @@ compare_arg(_Attr, _Val, _A) -> %% -> {ok, Res, log(), Cnt} | Error do_open(A) -> - L = #log{name = A#arg.name, - filename = A#arg.file, - size = A#arg.size, - head = mk_head(A#arg.head, A#arg.format), - mode = A#arg.mode, - version = A#arg.version}, - do_open2(L, A). + #arg{type = Type, format = Format, name = Name, head = Head0, + file = FName, repair = Repair, size = Size, mode = Mode, + version = V} = A, + Head = mk_head(Head0, Format), + case do_open2(Type, Format, Name, FName, Repair, Size, Mode, Head, V) of + {ok, Ret, Extra, FormatType, NoItems} -> + L = #log{name = Name, type = Type, format = Format, + filename = FName, size = Size, + format_type = FormatType, head = Head, mode = Mode, + version = V, extra = Extra}, + {ok, Ret, L, NoItems}; + Error -> + Error + end. mk_head({head, Term}, internal) -> {ok, term_to_binary(Term)}; mk_head({head, Bytes}, external) -> {ok, check_bytes(Bytes)}; @@ -1432,57 +1439,44 @@ do_inc_wrap_file(L) -> %%----------------------------------------------------------------- %% -> {ok, Reply, log(), Cnt} | Error %% Note: the header is always written, even if the log size is too small. -do_open2(L, #arg{type = halt, format = internal, name = Name, - file = FName, repair = Repair, size = Size, mode = Mode}) -> - case catch disk_log_1:int_open(FName, Repair, Mode, L#log.head) of +do_open2(halt, internal, Name, FName, Repair, Size, Mode, Head, _V) -> + case catch disk_log_1:int_open(FName, Repair, Mode, Head) of {ok, {_Alloc, FdC, {NoItems, _NoBytes}, FileSize}} -> Halt = #halt{fdc = FdC, curB = FileSize, size = Size}, - {ok, {ok, Name}, L#log{format_type = halt_int, extra = Halt}, - NoItems}; + {ok, {ok, Name}, Halt, halt_int, NoItems}; {repaired, FdC, Rec, Bad, FileSize} -> Halt = #halt{fdc = FdC, curB = FileSize, size = Size}, {ok, {repaired, Name, {recovered, Rec}, {badbytes, Bad}}, - L#log{format_type = halt_int, extra = Halt}, - Rec}; + Halt, halt_int, Rec}; Error -> Error end; -do_open2(L, #arg{type = wrap, format = internal, size = {MaxB, MaxF}, - name = Name, repair = Repair, file = FName, mode = Mode, - version = V}) -> +do_open2(wrap, internal, Name, FName, Repair, Size, Mode, Head, V) -> + {MaxB, MaxF} = Size, case catch - disk_log_1:mf_int_open(FName, MaxB, MaxF, Repair, Mode, L#log.head, V) of + disk_log_1:mf_int_open(FName, MaxB, MaxF, Repair, Mode, Head, V) of {ok, Handle, Cnt} -> - {ok, {ok, Name}, L#log{type = wrap, - format_type = wrap_int, - extra = Handle}, Cnt}; + {ok, {ok, Name}, Handle, wrap_int, Cnt}; {repaired, Handle, Rec, Bad, Cnt} -> {ok, {repaired, Name, {recovered, Rec}, {badbytes, Bad}}, - L#log{type = wrap, format_type = wrap_int, extra = Handle}, Cnt}; + Handle, wrap_int, Cnt}; Error -> Error end; -do_open2(L, #arg{type = halt, format = external, file = FName, name = Name, - size = Size, repair = Repair, mode = Mode}) -> - case catch disk_log_1:ext_open(FName, Repair, Mode, L#log.head) of +do_open2(halt, external, Name, FName, Repair, Size, Mode, Head, _V) -> + case catch disk_log_1:ext_open(FName, Repair, Mode, Head) of {ok, {_Alloc, FdC, {NoItems, _NoBytes}, FileSize}} -> Halt = #halt{fdc = FdC, curB = FileSize, size = Size}, - {ok, {ok, Name}, - L#log{format_type = halt_ext, format = external, extra = Halt}, - NoItems}; + {ok, {ok, Name}, Halt, halt_ext, NoItems}; Error -> Error end; -do_open2(L, #arg{type = wrap, format = external, size = {MaxB, MaxF}, - name = Name, file = FName, repair = Repair, mode = Mode, - version = V}) -> +do_open2(wrap, external, Name, FName, Repair, Size, Mode, Head, V) -> + {MaxB, MaxF} = Size, case catch - disk_log_1:mf_ext_open(FName, MaxB, MaxF, Repair, Mode, L#log.head, V) of + disk_log_1:mf_ext_open(FName, MaxB, MaxF, Repair, Mode, Head, V) of {ok, Handle, Cnt} -> - {ok, {ok, Name}, L#log{type = wrap, - format_type = wrap_ext, - extra = Handle, - format = external}, Cnt}; + {ok, {ok, Name}, Handle, wrap_ext, Cnt}; Error -> Error end. diff --git a/lib/kernel/src/disk_log.hrl b/lib/kernel/src/disk_log.hrl index 6c0aea070f..3262d979ee 100644 --- a/lib/kernel/src/disk_log.hrl +++ b/lib/kernel/src/disk_log.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1997-2012. All Rights Reserved. +%% Copyright Ericsson AB 1997-2015. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -152,8 +152,8 @@ users = 0 :: non_neg_integer(), %% non-linked users filename :: file:filename(), %% real name of the file owners = [] :: [{pid(), boolean()}],%% [{pid, notify}] - type = halt :: dlog_type(), - format = internal :: dlog_format(), + type :: dlog_type(), + format :: dlog_format(), format_type :: dlog_format_type(), head = none, %% none | {head, H} | {M,F,A} %% called when wraplog wraps diff --git a/lib/kernel/src/erts_debug.erl b/lib/kernel/src/erts_debug.erl index 39308c0043..8e2b5ad214 100644 --- a/lib/kernel/src/erts_debug.erl +++ b/lib/kernel/src/erts_debug.erl @@ -34,7 +34,8 @@ -export([breakpoint/2, disassemble/1, display/1, dist_ext_to_term/2, dump_monitors/1, dump_links/1, flat_size/1, get_internal_state/1, instructions/0, lock_counters/1, - map_info/1, same/2, set_internal_state/2]). + map_info/1, same/2, set_internal_state/2, + size_shared/1, copy_shared/1]). -spec breakpoint(MFA, Flag) -> non_neg_integer() when MFA :: {Module :: module(), @@ -86,6 +87,18 @@ dump_links(_) -> flat_size(_) -> erlang:nif_error(undef). +-spec size_shared(Term) -> non_neg_integer() when + Term :: term(). + +size_shared(_) -> + erlang:nif_error(undef). + +-spec copy_shared(Term) -> term() when + Term :: term(). + +copy_shared(_) -> + erlang:nif_error(undef). + -spec get_internal_state(W) -> term() when W :: reds_left | node_and_dist_references | monitoring_nodes | next_pid | 'DbTable_words' | check_io_debug @@ -230,7 +243,7 @@ map_size(Map,Seen0,Sum0) -> %% is not allowed to leak anywhere. They are only allowed in %% containers (cons cells and tuples, not maps), in gc and %% in erts_debug:same/2 - case erts_internal:map_type(Map) of + case erts_internal:term_type(Map) of flatmap -> Kt = erts_internal:map_to_tuple_keys(Map), Vs = maps:values(Map), diff --git a/lib/kernel/src/global.erl b/lib/kernel/src/global.erl index 2be1efaf24..0c73ead7c5 100644 --- a/lib/kernel/src/global.erl +++ b/lib/kernel/src/global.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2014. All Rights Reserved. +%% Copyright Ericsson AB 1996-2015. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -459,17 +459,17 @@ init([]) -> no_trace end, + Ca = case init:get_argument(connect_all) of + {ok, [["false"]]} -> + false; + _ -> + true + end, S = #state{the_locker = start_the_locker(DoTrace), trace = T0, - the_registrar = start_the_registrar()}, - S1 = trace_message(S, {init, node()}, []), - - case init:get_argument(connect_all) of - {ok, [["false"]]} -> - {ok, S1#state{connect_all = false}}; - _ -> - {ok, S1#state{connect_all = true}} - end. + the_registrar = start_the_registrar(), + connect_all = Ca}, + {ok, trace_message(S, {init, node()}, [])}. %%----------------------------------------------------------------- %% Connection algorithm @@ -2068,23 +2068,17 @@ get_known() -> gen_server:call(global_name_server, get_known, infinity). random_sleep(Times) -> - case (Times rem 10) of - 0 -> erase(random_seed); - _ -> ok - end, - case get(random_seed) of - undefined -> - _ = random:seed(erlang:phash2([erlang:node()]), - erlang:monotonic_time(), - erlang:unique_integer()), - ok; - _ -> ok - end, + _ = case Times rem 10 of + 0 -> + _ = rand:seed(exsplus); + _ -> + ok + end, %% First time 1/4 seconds, then doubling each time up to 8 seconds max. Tmax = if Times > 5 -> 8000; true -> ((1 bsl Times) * 1000) div 8 end, - T = random:uniform(Tmax), + T = rand:uniform(Tmax), ?trace({random_sleep, {me,self()}, {times,Times}, {t,T}, {tmax,Tmax}}), receive after T -> ok end. diff --git a/lib/kernel/src/global_group.erl b/lib/kernel/src/global_group.erl index 848df13c39..e71f83f9d3 100644 --- a/lib/kernel/src/global_group.erl +++ b/lib/kernel/src/global_group.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1998-2013. All Rights Reserved. +%% Copyright Ericsson AB 1998-2015. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -273,7 +273,7 @@ init([]) -> {ok, #state{publish_type = PT, group_publish_type = PubTpGrp, sync_state = synced, group_name = DefGroupName, no_contact = lists:sort(DefNodes), - other_grps = DefOther}} + other_grps = DefOther, connect_all = Ca}} end. diff --git a/lib/kernel/src/inet_config.erl b/lib/kernel/src/inet_config.erl index 803fae846e..a0d5344f11 100644 --- a/lib/kernel/src/inet_config.erl +++ b/lib/kernel/src/inet_config.erl @@ -188,9 +188,6 @@ do_load_resolv({win32,Type}, longnames) -> win32_load_from_registry(Type), inet_db:set_lookup([native]); -do_load_resolv({ose,_}, _) -> - inet_db:set_lookup([file]); - do_load_resolv(_, _) -> inet_db:set_lookup([native]). diff --git a/lib/kernel/src/kernel.erl b/lib/kernel/src/kernel.erl index 5f33f25a0d..40544da6c3 100644 --- a/lib/kernel/src/kernel.erl +++ b/lib/kernel/src/kernel.erl @@ -98,7 +98,7 @@ init([]) -> {kernel_config, start_link, []}, permanent, 2000, worker, [kernel_config]}, Code = {code_server, - {code, start_link, get_code_args()}, + {code, start_link, []}, permanent, 2000, worker, [code]}, File = {file_server_2, {file_server, start_link, []}, @@ -158,12 +158,6 @@ init(safe) -> {ok, {SupFlags, Boot ++ DiskLog ++ Pg2}}. -get_code_args() -> - case init:get_argument(nostick) of - {ok, [[]]} -> [[nostick]]; - _ -> [] - end. - start_dist_ac() -> Spec = [{dist_ac,{dist_ac,start_link,[]},permanent,2000,worker,[dist_ac]}], case application:get_env(kernel, start_dist_ac) of diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl index 3330b38d84..4947088635 100644 --- a/lib/kernel/src/os.erl +++ b/lib/kernel/src/os.erl @@ -27,7 +27,9 @@ %%% BIFs --export([getenv/0, getenv/1, getenv/2, getpid/0, putenv/2, system_time/0, system_time/1, +-export([getenv/0, getenv/1, getenv/2, getpid/0, + perf_counter/0, perf_counter/1, + putenv/2, system_time/0, system_time/1, timestamp/0, unsetenv/1]). -spec getenv() -> [string()]. @@ -60,6 +62,18 @@ getenv(VarName, DefaultValue) -> getpid() -> erlang:nif_error(undef). +-spec perf_counter() -> Counter when + Counter :: integer(). + +perf_counter() -> + erlang:nif_error(undef). + +-spec perf_counter(Unit) -> integer() when + Unit :: erlang:time_unit(). + +perf_counter(Unit) -> + erlang:convert_time_unit(os:perf_counter(), perf_counter, Unit). + -spec putenv(VarName, Value) -> true when VarName :: string(), Value :: string(). @@ -93,7 +107,7 @@ unsetenv(_) -> %%% End of BIFs -spec type() -> {Osfamily, Osname} when - Osfamily :: unix | win32 | ose, + Osfamily :: unix | win32, Osname :: atom(). type() -> @@ -212,174 +226,33 @@ extensions() -> Command :: atom() | io_lib:chars(). cmd(Cmd) -> validate(Cmd), - Bytes = case type() of - {unix, _} -> - unix_cmd(Cmd); - {win32, Wtype} -> - Command0 = case {os:getenv("COMSPEC"),Wtype} of - {false,windows} -> lists:concat(["command.com /c", Cmd]); - {false,_} -> lists:concat(["cmd /c", Cmd]); - {Cspec,_} -> lists:concat([Cspec," /c",Cmd]) - end, - %% open_port/2 awaits string() in Command, but io_lib:chars() can be - %% deep lists according to io_lib module description. - Command = lists:flatten(Command0), - Port = open_port({spawn, Command}, [stream, in, eof, hide]), - get_data(Port, []) - end, - String = unicode:characters_to_list(list_to_binary(Bytes)), + {SpawnCmd, SpawnOpts, SpawnInput} = mk_cmd(os:type(), Cmd), + Port = open_port({spawn, SpawnCmd}, [binary, stderr_to_stdout, + stream, in, eof, hide | SpawnOpts]), + true = port_command(Port, SpawnInput), + Bytes = get_data(Port, []), + String = unicode:characters_to_list(Bytes), if %% Convert to unicode list if possible otherwise return bytes is_list(String) -> String; - true -> Bytes - end. - -unix_cmd(Cmd) -> - Tag = make_ref(), - {Pid,Mref} = erlang:spawn_monitor( - fun() -> - process_flag(trap_exit, true), - Port = start_port(), - erlang:port_command(Port, mk_cmd(Cmd)), - exit({Tag,unix_get_data(Port)}) - end), - receive - {'DOWN',Mref,_,Pid,{Tag,Result}} -> - Result; - {'DOWN',Mref,_,Pid,Reason} -> - exit(Reason) + true -> binary_to_list(Bytes) end. -%% The -s flag implies that only the positional parameters are set, -%% and the commands are read from standard input. We set the -%% $1 parameter for easy identification of the resident shell. -%% --define(ROOT, "/"). --define(ROOT_ANDROID, "/system"). --define(SHELL, "bin/sh -s unix:cmd 2>&1"). --define(PORT_CREATOR_NAME, os_cmd_port_creator). - -%% -%% Serializing open_port through a process to avoid smp lock contention -%% when many concurrent os:cmd() want to do vfork (OTP-7890). -%% --spec start_port() -> port(). -start_port() -> - Ref = make_ref(), - Request = {Ref,self()}, - {Pid, Mon} = case whereis(?PORT_CREATOR_NAME) of - undefined -> - spawn_monitor(fun() -> - start_port_srv(Request) - end); - P -> - P ! Request, - M = erlang:monitor(process, P), - {P, M} - end, - receive - {Ref, Port} when is_port(Port) -> - erlang:demonitor(Mon, [flush]), - Port; - {Ref, Error} -> - erlang:demonitor(Mon, [flush]), - exit(Error); - {'DOWN', Mon, process, Pid, _Reason} -> - start_port() - end. - -start_port_srv(Request) -> - %% We don't want a group leader of some random application. Use - %% kernel_sup's group leader. - {group_leader, GL} = process_info(whereis(kernel_sup), - group_leader), - true = group_leader(GL, self()), - process_flag(trap_exit, true), - StayAlive = try register(?PORT_CREATOR_NAME, self()) - catch - error:_ -> false - end, - start_port_srv_handle(Request), - case StayAlive of - true -> start_port_srv_loop(); - false -> exiting - end. - -start_port_srv_handle({Ref,Client}) -> - Path = case lists:reverse(erlang:system_info(system_architecture)) of - % androideabi - "ibaediordna" ++ _ -> filename:join([?ROOT_ANDROID, ?SHELL]); - _ -> filename:join([?ROOT, ?SHELL]) - end, - Reply = try open_port({spawn, Path},[stream]) of - Port when is_port(Port) -> - (catch port_connect(Port, Client)), - unlink(Port), - Port - catch - error:Reason -> - {Reason,erlang:get_stacktrace()} - end, - Client ! {Ref,Reply}, - ok. - -start_port_srv_loop() -> - receive - {Ref, Client} = Request when is_reference(Ref), - is_pid(Client) -> - start_port_srv_handle(Request); - _Junk -> - ok - end, - start_port_srv_loop(). - -%% -%% unix_get_data(Port) -> Result -%% -unix_get_data(Port) -> - unix_get_data(Port, []). - -unix_get_data(Port, Sofar) -> - receive - {Port,{data, Bytes}} -> - case eot(Bytes) of - {done, Last} -> - lists:flatten([Sofar|Last]); - more -> - unix_get_data(Port, [Sofar|Bytes]) - end; - {'EXIT', Port, _} -> - lists:flatten(Sofar) - end. - -%% -%% eot(String) -> more | {done, Result} -%% -eot(Bs) -> - eot(Bs, []). - -eot([4| _Bs], As) -> - {done, lists:reverse(As)}; -eot([B| Bs], As) -> - eot(Bs, [B| As]); -eot([], _As) -> - more. - -%% -%% mk_cmd(Cmd) -> {ok, ShellCommandString} | {error, ErrorString} -%% -%% We do not allow any input to Cmd (hence commands that want -%% to read from standard input will return immediately). -%% Standard error is redirected to standard output. -%% -%% We use ^D (= EOT = 4) to mark the end of the stream. -%% -mk_cmd(Cmd) when is_atom(Cmd) -> % backward comp. - mk_cmd(atom_to_list(Cmd)); -mk_cmd(Cmd) -> - %% We insert a new line after the command, in case the command - %% contains a comment character. - [$(, unicode:characters_to_binary(Cmd), "\n) </dev/null; echo \"\^D\"\n"]. - +mk_cmd({win32,Wtype}, Cmd) -> + Command = case {os:getenv("COMSPEC"),Wtype} of + {false,windows} -> lists:concat(["command.com /c", Cmd]); + {false,_} -> lists:concat(["cmd /c", Cmd]); + {Cspec,_} -> lists:concat([Cspec," /c",Cmd]) + end, + {Command, [], []}; +mk_cmd(OsType,Cmd) when is_atom(Cmd) -> + mk_cmd(OsType, atom_to_list(Cmd)); +mk_cmd(_,Cmd) -> + %% Have to send command in like this in order to make sh commands like + %% cd and ulimit available + {"/bin/sh -s unix:cmd", [out], + %% We insert a new line after the command, in case the command + %% contains a comment character. + ["(", unicode:characters_to_binary(Cmd), "\n); exit\n"]}. validate(Atom) when is_atom(Atom) -> ok; @@ -397,7 +270,7 @@ validate1([]) -> get_data(Port, Sofar) -> receive {Port, {data, Bytes}} -> - get_data(Port, [Sofar|Bytes]); + get_data(Port, [Sofar,Bytes]); {Port, eof} -> Port ! {self(), close}, receive @@ -410,5 +283,5 @@ get_data(Port, Sofar) -> after 1 -> % force context switch ok end, - lists:flatten(Sofar) + iolist_to_binary(Sofar) end. |