diff options
Diffstat (limited to 'erts/preloaded/src/erl_prim_loader.erl')
| -rw-r--r-- | erts/preloaded/src/erl_prim_loader.erl | 321 |
1 files changed, 113 insertions, 208 deletions
diff --git a/erts/preloaded/src/erl_prim_loader.erl b/erts/preloaded/src/erl_prim_loader.erl index 9f6cba33bd..5f88029585 100644 --- a/erts/preloaded/src/erl_prim_loader.erl +++ b/erts/preloaded/src/erl_prim_loader.erl @@ -42,7 +42,7 @@ -include("inet_boot.hrl"). %% Public --export([start/3, set_path/1, get_path/0, get_file/1, get_files/2, +-export([start/0, set_path/1, get_path/0, get_file/1, list_dir/1, read_file_info/1, read_link_info/1, get_cwd/0, get_cwd/1]). %% Used by erl_boot_server @@ -64,12 +64,10 @@ -record(state, {loader :: 'efile' | 'inet', hosts = [] :: [host()], % hosts list (to boot from) - id, % not used any more? data :: 'noport' | port(), % data port etc - timeout :: timeout(), % idle timeout + timeout :: timeout(), % idle timeout %% Number of timeouts before archives are released n_timeouts :: non_neg_integer(), - multi_get = false :: boolean(), prim_state :: prim_state()}). % state for efile code loader -define(IDLE_TIMEOUT, 60000). %% tear inet connection after 1 minutes @@ -103,26 +101,13 @@ debug(#prim_state{debug = Deb}, Term) -> %%% Interface Functions. %%% -------------------------------------------------------- --spec start(Id, Loader, Hosts) -> +-spec start() -> {'ok', Pid} | {'error', What} when - Id :: term(), - Loader :: atom() | string(), - Hosts :: Host | [Host], - Host :: host(), Pid :: pid(), What :: term(). -start(Id, Pgm, Hosts) when is_atom(Hosts) -> - start(Id, Pgm, [Hosts]); -start(Id, Pgm0, Hosts) -> - Pgm = if - is_atom(Pgm0) -> - atom_to_list(Pgm0); - true -> - Pgm0 - end, +start() -> Self = self(), - Pid = spawn_link(fun() -> start_it(Pgm, Id, Self, Hosts) end), - register(erl_prim_loader, Pid), + Pid = spawn_link(fun() -> start_it(Self) end), receive {Pid,ok} -> {ok,Pid}; @@ -130,26 +115,40 @@ start(Id, Pgm0, Hosts) -> {error,Reason} end. -%% Hosts must be a list of form ['1.2.3.4' ...] -start_it("inet", Id, Pid, Hosts) -> +start_it(Parent) -> process_flag(trap_exit, true), - ?dbg(inet, {Id,Pid,Hosts}), + register(erl_prim_loader, self()), + Loader = case init:get_argument(loader) of + {ok,[[Loader0]]} -> + Loader0; + error -> + "efile" + end, + case Loader of + "efile" -> start_efile(Parent); + "inet" -> start_inet(Parent) + end. + +%% Hosts must be a list of form ['1.2.3.4' ...] +start_inet(Parent) -> + Hosts = case init:get_argument(hosts) of + {ok,[Hosts0]} -> Hosts0; + _ -> [] + end, AL = ipv4_list(Hosts), ?dbg(addresses, AL), {ok,Tcp} = find_master(AL), - init_ack(Pid), + init_ack(Parent), PS = prim_init(), State = #state {loader = inet, hosts = AL, - id = Id, data = Tcp, timeout = ?IDLE_TIMEOUT, n_timeouts = ?N_TIMEOUTS, prim_state = PS}, - loop(State, Pid, []); + loop(State, Parent, []). -start_it("efile", Id, Pid, _Hosts) -> - process_flag(trap_exit, true), +start_efile(Parent) -> {ok, Port} = prim_file:start(), %% Check that we started in a valid directory. case prim_file:get_cwd(Port) of @@ -160,20 +159,14 @@ start_it("efile", Id, Pid, _Hosts) -> erlang:display(Report), exit({error, invalid_current_directory}); _ -> - init_ack(Pid) + init_ack(Parent) end, - MultiGet = case erlang:system_info(thread_pool_size) of - 0 -> false; - _ -> true - end, PS = prim_init(), State = #state {loader = efile, - id = Id, data = Port, timeout = infinity, - multi_get = MultiGet, prim_state = PS}, - loop(State, Pid, []). + loop(State, Parent, []). init_ack(Pid) -> Pid ! {self(),ok}, @@ -198,20 +191,6 @@ get_file(File) when is_atom(File) -> get_file(File) -> check_file_result(get_file, File, request({get_file,File})). --spec get_files([{atom(), string()}], - fun((atom(),binary(),string()) -> 'ok' | {'error', atom()})) -> - 'ok' | {'error', atom()}. -get_files(ModFiles, Fun) -> - case request({get_files,{ModFiles,Fun}}) of - E = {error,_M} -> - E; - {error,Reason,M} -> - check_file_result(get_files, M, {error,Reason}), - {error,M}; - ok -> - ok - end. - -spec list_dir(Dir) -> {'ok', Filenames} | 'error' when Dir :: string(), Filenames :: [Filename :: string()]. @@ -310,76 +289,59 @@ check_file_result(_, _, Other) -> %%% The main loop. %%% -------------------------------------------------------- -loop(State, Parent, Paths) -> +loop(St0, Parent, Paths) -> receive + {Pid,{set_path,NewPaths}} when is_pid(Pid) -> + Pid ! {self(),ok}, + loop(St0, Parent, to_strs(NewPaths)); {Pid,Req} when is_pid(Pid) -> - %% erlang:display(Req), - {Resp,State2,Paths2} = - case Req of - {set_path,NewPaths} -> - {ok,State,to_strs(NewPaths)}; - {get_path,_} -> - {{ok,Paths},State,Paths}; - {get_file,File} -> - {Res,State1} = handle_get_file(State, Paths, File), - {Res,State1,Paths}; - {get_files,{ModFiles,Fun}} -> - {Res,State1} = handle_get_files(State, ModFiles, Paths, Fun), - {Res,State1,Paths}; - {list_dir,Dir} -> - {Res,State1} = handle_list_dir(State, Dir), - {Res,State1,Paths}; - {read_file_info,File} -> - {Res,State1} = handle_read_file_info(State, File), - {Res,State1,Paths}; - {read_link_info,File} -> - {Res,State1} = handle_read_link_info(State, File), - {Res,State1,Paths}; - {get_cwd,[]} -> - {Res,State1} = handle_get_cwd(State, []), - {Res,State1,Paths}; - {get_cwd,[_]=Args} -> - {Res,State1} = handle_get_cwd(State, Args), - {Res,State1,Paths}; - {set_primary_archive,File,ArchiveBin,FileInfo,ParserFun} -> - {Res,State1} = - handle_set_primary_archive(State, File, - ArchiveBin, FileInfo, - ParserFun), - {Res,State1,Paths}; - release_archives -> - {Res,State1} = handle_release_archives(State), - {Res,State1,Paths}; - _Other -> - {ignore,State,Paths} - end, - if Resp =:= ignore -> ok; - true -> Pid ! {self(),Resp}, ok - end, - if - is_record(State2, state) -> - loop(State2, Parent, Paths2); - true -> - exit({bad_state, Req, State2}) + case handle_request(Req, Paths, St0) of + ignore -> + ok; + {Resp,#state{}=St1} -> + Pid ! {self(),Resp}, + loop(St1, Parent, Paths); + {_,State2,_} -> + exit({bad_state,Req,State2}) end; {'EXIT',Parent,W} -> - _State1 = handle_stop(State), + _ = handle_stop(St0), exit(W); {'EXIT',P,W} -> - State1 = handle_exit(State, P, W), - loop(State1, Parent, Paths); + St1 = handle_exit(St0, P, W), + loop(St1, Parent, Paths); _Message -> - loop(State, Parent, Paths) - after State#state.timeout -> - State1 = handle_timeout(State, Parent), - loop(State1, Parent, Paths) + loop(St0, Parent, Paths) + after St0#state.timeout -> + St1 = handle_timeout(St0, Parent), + loop(St1, Parent, Paths) + end. + +handle_request(Req, Paths, St0) -> + case Req of + {get_path,_} -> + {{ok,Paths},St0}; + {get_file,File} -> + handle_get_file(St0, Paths, File); + {list_dir,Dir} -> + handle_list_dir(St0, Dir); + {read_file_info,File} -> + handle_read_file_info(St0, File); + {read_link_info,File} -> + handle_read_link_info(St0, File); + {get_cwd,[]} -> + handle_get_cwd(St0, []); + {get_cwd,[_]=Args} -> + handle_get_cwd(St0, Args); + {set_primary_archive,File,ArchiveBin,FileInfo,ParserFun} -> + handle_set_primary_archive(St0, File, ArchiveBin, + FileInfo, ParserFun); + release_archives -> + handle_release_archives(St0); + _ -> + ignore end. -handle_get_files(State = #state{multi_get = true}, ModFiles, Paths, Fun) -> - ?SAFE2(efile_multi_get_file_from_port(State, ModFiles, Paths, Fun), State); -handle_get_files(State, _ModFiles, _Paths, _Fun) -> % no multi get - {{error,no_multi_get},State}. - handle_get_file(State = #state{loader = efile}, Paths, File) -> ?SAFE2(efile_get_file_from_port(State, File, Paths), State); handle_get_file(State = #state{loader = inet}, Paths, File) -> @@ -430,53 +392,6 @@ handle_timeout(State = #state{loader = inet}, Parent) -> %%% Functions which handle efile as prim_loader (default). %%% -------------------------------------------------------- -%%% Reading many files in parallel is an optimization. -%%% See also comment in init.erl. - -%% -> {ok,State} | {{error,Module},State} | {{error,Reason,Module},State} -efile_multi_get_file_from_port(State, ModFiles, Paths, Fun) -> - Ref = make_ref(), - %% More than 200 processes is no gain. - Max = erlang:min(200, erlang:system_info(thread_pool_size)), - efile_multi_get_file_from_port2(ModFiles, 0, Max, State, Paths, Fun, Ref, ok). - -efile_multi_get_file_from_port2([MF | MFs], Out, Max, State, Paths, Fun, Ref, Ret) when Out < Max -> - Self = self(), - _Pid = spawn(fun() -> efile_par_get_file(Ref, State, MF, Paths, Self, Fun) end), - efile_multi_get_file_from_port2(MFs, Out+1, Max, State, Paths, Fun, Ref, Ret); -efile_multi_get_file_from_port2(MFs, Out, Max, _State, Paths, Fun, Ref, Ret) when Out > 0 -> - receive - {Ref, ok, State1} -> - efile_multi_get_file_from_port2(MFs, Out-1, Max, State1, Paths, Fun, Ref, Ret); - {Ref, {error,_Mod} = Error, State1} -> - efile_multi_get_file_from_port2(MFs, Out-1, Max, State1, Paths, Fun, Ref, Error); - {Ref, MF, {error,emfile,State1}} -> - %% Max can take negative values. Out cannot. - efile_multi_get_file_from_port2([MF | MFs], Out-1, Max-1, State1, Paths, Fun, Ref, Ret); - {Ref, {M,_F}, {error,Error,State1}} -> - efile_multi_get_file_from_port2(MFs, Out-1, 0, State1, Paths, Fun, Ref, {error,Error,M}) - end; -efile_multi_get_file_from_port2(_MFs, 0, _Max, State, _Paths, _Fun, _Ref, Ret) -> - {Ret,State}. - -efile_par_get_file(Ref, State, {Mod,File} = MF, Paths, Pid, Fun) -> - %% One port for each file read in "parallel": - case prim_file:start() of - {ok, Port} -> - Port0 = State#state.data, - State1 = State#state{data = Port}, - R = case efile_get_file_from_port(State1, File, Paths) of - {{error,Reason},State2} -> - {Ref,MF,{error,Reason,State2}}; - {{ok,BinFile,Full},State2} -> - %% Fun(...) -> ok | {error,Mod} - {Ref,Fun(Mod, BinFile, Full),State2#state{data=Port0}} - end, - prim_file:close(Port), - Pid ! R; - {error, Error} -> - Pid ! {Ref,MF,{error,Error,State}} - end. %% -> {{ok,BinFile,File},State} | {{error,Reason},State} efile_get_file_from_port(State, File, Paths) -> @@ -1287,70 +1202,62 @@ path_join([Path],Acc) -> path_join([Path|Paths],Acc) -> path_join(Paths,"/" ++ reverse(Path) ++ Acc). -name_split(ArchiveFile, File0) -> - File = absname(File0), - do_name_split(ArchiveFile, File). - -do_name_split(undefined, File) -> +name_split(undefined, File) -> %% Ignore primary archive - case string_split(File, init:archive_extension(), []) of + RevExt = reverse(init:archive_extension()), + case archive_split(File, RevExt, []) of no_split -> - %% Plain file {file, File}; - {split, _RevArchiveBase, RevArchiveFile, []} -> - %% Top dir in archive - ArchiveFile = reverse(RevArchiveFile), - {archive, ArchiveFile, []}; - {split, _RevArchiveBase, RevArchiveFile, [$/ | FileInArchive]} -> - %% File in archive - ArchiveFile = reverse(RevArchiveFile), - {archive, ArchiveFile, FileInArchive}; - {split, _RevArchiveBase, _RevArchiveFile, _FileInArchive} -> - %% False match. Assume plain file - {file, File} + Archive -> + Archive end; -do_name_split(ArchiveFile, File) -> +name_split(ArchiveFile, File0) -> %% Look first in primary archive - case string_match(real_path(File), ArchiveFile, []) of + File = absname(File0), + case string_match(real_path(File), ArchiveFile) of no_match -> %% Archive or plain file - do_name_split(undefined, File); - {match, _RevPrimArchiveFile, FileInArchive} -> + name_split(undefined, File); + {match, FileInArchive} -> %% Primary archive {archive, ArchiveFile, FileInArchive} end. -string_match([Char | File], [Char | Archive], RevTop) -> - string_match(File, Archive, [Char | RevTop]); -string_match([] = File, [], RevTop) -> - {match, RevTop, File}; -string_match([$/ | File], [], RevTop) -> - {match, RevTop, File}; -string_match(_File, _Archive, _RevTop) -> +string_match([Char | File], [Char | Archive]) -> + string_match(File, Archive); +string_match([] = File, []) -> + {match, File}; +string_match([$/ | File], []) -> + {match, File}; +string_match(_File, _Archive) -> no_match. -string_split([Char | File], [Char | Ext] = FullExt, RevTop) -> - RevTop2 = [Char | RevTop], - string_split2(File, Ext, RevTop, RevTop2, File, FullExt, RevTop2); -string_split([Char | File], Ext, RevTop) -> - string_split(File, Ext, [Char | RevTop]); -string_split([], _Ext, _RevTop) -> - no_split. - -string_split2([Char | File], [Char | Ext], RevBase, RevTop, SaveFile, SaveExt, SaveTop) -> - string_split2(File, Ext, RevBase, [Char | RevTop], SaveFile, SaveExt, SaveTop); -string_split2(File, [], RevBase, RevTop, _SaveFile, _SaveExt, _SaveTop) -> - {split, RevBase, RevTop, File}; -string_split2(_, _Ext, _RevBase, _RevTop, SaveFile, SaveExt, SaveTop) -> - string_split(SaveFile, SaveExt, SaveTop). +archive_split("/"++File, RevExt, Acc) -> + case is_prefix(RevExt, Acc) of + false -> + archive_split(File, RevExt, [$/|Acc]); + true -> + ArchiveFile = absname(reverse(Acc)), + {archive, ArchiveFile, File} + end; +archive_split([H|T], RevExt, Acc) -> + archive_split(T, RevExt, [H|Acc]); +archive_split([], RevExt, Acc) -> + case is_prefix(RevExt, Acc) of + false -> + no_split; + true -> + ArchiveFile = absname(reverse(Acc)), + {archive, ArchiveFile, []} + end. + +is_prefix([H|T1], [H|T2]) -> is_prefix(T1, T2); +is_prefix([_|_], _) -> false; +is_prefix([], _ ) -> true. %% Parse list of ipv4 addresses ipv4_list([H | T]) -> - IPV = if is_atom(H) -> ipv4_address(atom_to_list(H)); - is_list(H) -> ipv4_address(H); - true -> {error,einal} - end, - case IPV of + case ipv4_address(H) of {ok,IP} -> [IP | ipv4_list(T)]; _ -> ipv4_list(T) end; @@ -1415,8 +1322,6 @@ absname_vr([Drive, $\: | NameRest], _) -> %% Assumes normalized name pathtype(Name) when is_list(Name) -> case erlang:system_info(os_type) of - {ose, _} -> - unix_pathtype(Name); {unix, _} -> unix_pathtype(Name); {win32, _} -> |