diff options
Diffstat (limited to 'erts/preloaded/src')
| -rw-r--r-- | erts/preloaded/src/Makefile | 1 | ||||
| -rw-r--r-- | erts/preloaded/src/erl_prim_loader.erl | 408 | ||||
| -rw-r--r-- | erts/preloaded/src/erlang.erl | 156 | ||||
| -rw-r--r-- | erts/preloaded/src/erts.app.src | 1 | ||||
| -rw-r--r-- | erts/preloaded/src/erts_code_purger.erl | 299 | ||||
| -rw-r--r-- | erts/preloaded/src/erts_internal.erl | 150 | ||||
| -rw-r--r-- | erts/preloaded/src/init.erl | 401 | ||||
| -rw-r--r-- | erts/preloaded/src/prim_file.erl | 3 |
8 files changed, 826 insertions, 593 deletions
diff --git a/erts/preloaded/src/Makefile b/erts/preloaded/src/Makefile index 52034a0881..31383dda83 100644 --- a/erts/preloaded/src/Makefile +++ b/erts/preloaded/src/Makefile @@ -41,6 +41,7 @@ PRE_LOADED_ERL_MODULES = \ zlib \ prim_zip \ otp_ring0 \ + erts_code_purger \ erlang \ erts_internal diff --git a/erts/preloaded/src/erl_prim_loader.erl b/erts/preloaded/src/erl_prim_loader.erl index 9f6cba33bd..824ed3435d 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 @@ -50,30 +50,28 @@ prim_read_file_info/3, prim_get_cwd/2]). %% Used by escript and code --export([set_primary_archive/4, release_archives/0]). +-export([set_primary_archive/4]). + +%% Used by test suites +-export([purge_archive_cache/0]). -include_lib("kernel/include/file.hrl"). -type host() :: atom(). -record(prim_state, {debug :: boolean(), - cache, primary_archive}). -type prim_state() :: #prim_state{}. -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 - %% Number of timeouts before archives are released - n_timeouts :: non_neg_integer(), - multi_get = false :: boolean(), + timeout :: timeout(), % idle timeout prim_state :: prim_state()}). % state for efile code loader --define(IDLE_TIMEOUT, 60000). %% tear inet connection after 1 minutes --define(N_TIMEOUTS, 6). %% release efile archive after 6 minutes +-define(EFILE_IDLE_TIMEOUT, (6*60*1000)). %purge archives +-define(INET_IDLE_TIMEOUT, (60*1000)). %tear down connection timeout %% Defines for inet as prim_loader -define(INET_FAMILY, inet). @@ -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 +115,39 @@ 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, + timeout = ?INET_IDLE_TIMEOUT, 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 +158,14 @@ 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, + timeout = ?EFILE_IDLE_TIMEOUT, prim_state = PS}, - loop(State, Pid, []). + loop(State, Parent, []). init_ack(Pid) -> Pid ! {self(),ok}, @@ -198,20 +190,6 @@ 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()]. @@ -250,10 +228,13 @@ set_primary_archive(File, ArchiveBin, FileInfo, ParserFun) when is_list(File), is_binary(ArchiveBin), is_record(FileInfo, file_info) -> request({set_primary_archive, File, ArchiveBin, FileInfo, ParserFun}). --spec release_archives() -> 'ok' | {'error', _}. +%% NOTE: Does not close the primary archive. Only closes all +%% open zip files kept in the cache. Should be called before an archive +%% file is to be removed (for example in the test suites). -release_archives() -> - request(release_archives). +-spec purge_archive_cache() -> 'ok' | {'error', _}. +purge_archive_cache() -> + request(purge_archive_cache). request(Req) -> Loader = whereis(erl_prim_loader), @@ -310,76 +291,59 @@ 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); + purge_archive_cache -> + handle_purge_archive_cache(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) -> @@ -388,8 +352,9 @@ handle_get_file(State = #state{loader = inet}, Paths, File) -> handle_set_primary_archive(State= #state{loader = efile}, File, ArchiveBin, FileInfo, ParserFun) -> ?SAFE2(efile_set_primary_archive(State, File, ArchiveBin, FileInfo, ParserFun), State). -handle_release_archives(State= #state{loader = efile}) -> - ?SAFE2(efile_release_archives(State), State). +handle_purge_archive_cache(#state{loader = efile}=State) -> + prim_purge_cache(), + {ok,State}. handle_list_dir(State = #state{loader = efile}, Dir) -> ?SAFE2(efile_list_dir(State, Dir), State); @@ -430,53 +395,6 @@ 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) -> @@ -521,10 +439,6 @@ efile_set_primary_archive(#state{prim_state = PS} = State, File, FileInfo, ParserFun), {Res,State#state{prim_state = PS2}}. -efile_release_archives(#state{prim_state = PS} = State) -> - {Res, PS2} = prim_release_archives(PS), - {Res,State#state{prim_state = PS2}}. - efile_list_dir(#state{prim_state = PS} = State, Dir) -> {Res, PS2} = prim_list_dir(PS, Dir), {Res, State#state{prim_state = PS2}}. @@ -546,14 +460,9 @@ efile_exit_port(State, Port, Reason) when State#state.data =:= Port -> efile_exit_port(State, _Port, _Reason) -> State. -efile_timeout_handler(#state{n_timeouts = N} = State, _Parent) -> - if - N =< 0 -> - {_Res, State2} = efile_release_archives(State), - State2#state{n_timeouts = ?N_TIMEOUTS}; - true -> - State#state{n_timeouts = N - 1} - end. +efile_timeout_handler(State, _Parent) -> + prim_purge_cache(), + State. %%% -------------------------------------------------------- %%% Functions which handle inet prim_loader @@ -694,7 +603,7 @@ inet_get_file_from_port1(_File, [], State) -> inet_send_and_rcv(Msg, Tag, State) when State#state.data =:= noport -> {ok,Tcp} = find_master(State#state.hosts), %% reconnect inet_send_and_rcv(Msg, Tag, State#state{data = Tcp, - timeout = ?IDLE_TIMEOUT}); + timeout = ?INET_IDLE_TIMEOUT}); inet_send_and_rcv(Msg, Tag, #state{data = Tcp, timeout = Timeout} = State) -> prim_inet:send(Tcp, term_to_binary(Msg)), receive @@ -819,32 +728,19 @@ prim_init() -> end, cache_new(#prim_state{debug = Deb}). -prim_release_archives(PS) -> - debug(PS, release_archives), - {Res, PS2} = prim_do_release_archives(PS, get(), []), - debug(PS2, {return, Res}), - {Res, PS2}. - -prim_do_release_archives(PS, [{ArchiveFile, DictVal} | KeyVals], Acc) -> - Res = - case DictVal of - {primary, _PrimZip, _FI, _ParserFun} -> - ok; % Keep primary archive - {Cache, _FI} -> - debug(PS, {release, cache, ArchiveFile}), - erase(ArchiveFile), - clear_cache(ArchiveFile, Cache) - end, - case Res of - ok -> - prim_do_release_archives(PS, KeyVals, Acc); - {error, Reason} -> - prim_do_release_archives(PS, KeyVals, [{ArchiveFile, Reason} | Acc]) - end; -prim_do_release_archives(PS, [], []) -> - {ok, PS#prim_state{primary_archive = undefined}}; -prim_do_release_archives(PS, [], Errors) -> - {{error, Errors}, PS#prim_state{primary_archive = undefined}}. +prim_purge_cache() -> + do_prim_purge_cache(get()). + +do_prim_purge_cache([{Key,Val}|T]) -> + case Val of + {Cache,_FI} -> + catch clear_cache(Key, Cache); + _ -> + ok + end, + do_prim_purge_cache(T); +do_prim_purge_cache([]) -> + ok. prim_set_primary_archive(PS, undefined, undefined, undefined, _ParserFun) -> debug(PS, {set_primary_archive, clean}), @@ -1287,70 +1183,62 @@ 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 +1303,6 @@ 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, _} -> diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl index 7280b43502..ab51cf385c 100644 --- a/erts/preloaded/src/erlang.erl +++ b/erts/preloaded/src/erlang.erl @@ -71,7 +71,8 @@ | 'milli_seconds' | 'micro_seconds' | 'nano_seconds' - | 'native'. + | 'native' + | 'perf_counter'. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Native code BIF stubs and their types @@ -185,6 +186,8 @@ 'receive' | 'print' | 'timestamp' | + 'monotonic_timestamp' | + 'strict_monotonic_timestamp' | 'label' | 'serial'. @@ -198,7 +201,10 @@ 'exclusive' | 'runnable_ports' | 'runnable_procs' | - 'scheduler'. + 'scheduler' | + 'timestamp' | + 'monotonic_timestamp' | + 'strict_monotonic_timestamp'. -type system_monitor_option() :: 'busy_port' | @@ -230,6 +236,8 @@ garbage_collection | timestamp | cpu_timestamp | + monotonic_timestamp | + strict_monotonic_timestamp | arity | set_on_spawn | set_on_first_spawn | @@ -258,6 +266,8 @@ running | garbage_collection | timestamp | + monotonic_timestamp | + strict_monotonic_timestamp | arity. -type trace_info_return() :: @@ -460,7 +470,7 @@ check_old_code(_Module) -> CheckResult :: boolean(). check_process_code(Pid, Module) -> try - erlang:check_process_code(Pid, Module, [{allow_gc, true}]) + erts_internal:check_process_code(Pid, Module, [{allow_gc, true}]) catch error:Error -> erlang:error(Error, [Pid, Module]) end. @@ -475,51 +485,11 @@ check_process_code(Pid, Module) -> CheckResult :: boolean() | aborted. check_process_code(Pid, Module, OptionList) -> try - {Async, AllowGC} = get_cpc_opts(OptionList, sync, true), - case Async of - {async, ReqId} -> - {priority, Prio} = erlang:process_info(erlang:self(), - priority), - erts_internal:request_system_task(Pid, - Prio, - {check_process_code, - ReqId, - Module, - AllowGC}), - async; - sync -> - case Pid == erlang:self() of - true -> - erts_internal:check_process_code(Module, - [{allow_gc, AllowGC}]); - false -> - {priority, Prio} = erlang:process_info(erlang:self(), - priority), - ReqId = erlang:make_ref(), - erts_internal:request_system_task(Pid, - Prio, - {check_process_code, - ReqId, - Module, - AllowGC}), - receive - {check_process_code, ReqId, CheckResult} -> - CheckResult - end - end - end + erts_internal:check_process_code(Pid, Module, OptionList) catch error:Error -> erlang:error(Error, [Pid, Module, OptionList]) end. -% gets async and allow_gc opts and verify valid option list -get_cpc_opts([{async, _ReqId} = AsyncTuple | Options], _OldAsync, AllowGC) -> - get_cpc_opts(Options, AsyncTuple, AllowGC); -get_cpc_opts([{allow_gc, AllowGC} | Options], Async, _OldAllowGC) -> - get_cpc_opts(Options, Async, AllowGC); -get_cpc_opts([], Async, AllowGC) -> - {Async, AllowGC}. - %% crc32/1 -spec erlang:crc32(Data) -> non_neg_integer() when Data :: iodata(). @@ -1378,6 +1348,7 @@ convert_time_unit(Time, FromUnit, ToUnit) -> try FU = case FromUnit of native -> erts_internal:time_unit(); + perf_counter -> erts_internal:perf_counter_unit(); nano_seconds -> 1000*1000*1000; micro_seconds -> 1000*1000; milli_seconds -> 1000; @@ -1386,6 +1357,7 @@ convert_time_unit(Time, FromUnit, ToUnit) -> end, TU = case ToUnit of native -> erts_internal:time_unit(); + perf_counter -> erts_internal:perf_counter_unit(); nano_seconds -> 1000*1000*1000; micro_seconds -> 1000*1000; milli_seconds -> 1000; @@ -1464,8 +1436,16 @@ processes() -> %% purge_module/1 -spec purge_module(Module) -> true when Module :: atom(). -purge_module(_Module) -> - erlang:nif_error(undefined). +purge_module(Module) when erlang:is_atom(Module) -> + case erts_code_purger:purge(Module) of + {false, _} -> + erlang:error(badarg, [Module]); + {true, _} -> + true + end; +purge_module(Arg) -> + erlang:error(badarg, [Arg]). + %% put/2 -spec put(Key, Val) -> term() when @@ -2027,12 +2007,21 @@ nodes(_Arg) -> | eof | {parallelism, Boolean :: boolean()} | hide. -open_port(_PortName,_PortSettings) -> - erlang:nif_error(undefined). +open_port(PortName, PortSettings) -> + case case erts_internal:open_port(PortName, PortSettings) of + Ref when erlang:is_reference(Ref) -> receive {Ref, Res} -> Res end; + Res -> Res + end of + Port when erlang:is_port(Port) -> Port; + Error -> erlang:error(Error, [PortName, PortSettings]) + end. -type priority_level() :: low | normal | high | max. +-type message_queue_data() :: + off_heap | on_heap | mixed. + -spec process_flag(trap_exit, Boolean) -> OldBoolean when Boolean :: boolean(), OldBoolean :: boolean(); @@ -2045,6 +2034,9 @@ open_port(_PortName,_PortSettings) -> (min_bin_vheap_size, MinBinVHeapSize) -> OldMinBinVHeapSize when MinBinVHeapSize :: non_neg_integer(), OldMinBinVHeapSize :: non_neg_integer(); + (message_queue_data, MQD) -> OldMQD when + MQD :: message_queue_data(), + OldMQD :: message_queue_data(); (priority, Level) -> OldLevel when Level :: priority_level(), OldLevel :: priority_level(); @@ -2071,6 +2063,7 @@ process_flag(_Flag, _Value) -> dictionary | error_handler | garbage_collection | + garbage_collection_info | group_leader | heap_size | initial_call | @@ -2083,6 +2076,7 @@ process_flag(_Flag, _Value) -> min_bin_vheap_size | monitored_by | monitors | + message_queue_data | priority | reductions | registered_name | @@ -2110,6 +2104,7 @@ process_flag(_Flag, _Value) -> {dictionary, Dictionary :: [{Key :: term(), Value :: term()}]} | {error_handler, Module :: module()} | {garbage_collection, GCInfo :: [{atom(),non_neg_integer()}]} | + {garbage_collection_info, GCInfo :: [{atom(),non_neg_integer()}]} | {group_leader, GroupLeader :: pid()} | {heap_size, Size :: non_neg_integer()} | {initial_call, mfa()} | @@ -2124,6 +2119,7 @@ process_flag(_Flag, _Value) -> {monitors, Monitors :: [{process, Pid :: pid() | {RegName :: atom(), Node :: node()}}]} | + {message_queue_data, MQD :: message_queue_data()} | {priority, Level :: priority_level()} | {reductions, Number :: non_neg_integer()} | {registered_name, Atom :: atom()} | @@ -2178,6 +2174,8 @@ send(_Dest,_Msg,_Options) -> ('receive') -> {'receive', boolean()}; (print) -> {print, boolean()}; (timestamp) -> {timestamp, boolean()}; + (monotonic_timestamp) -> {timestamp, boolean()}; + (strict_monotonic_timestamp) -> {strict_monotonic_timestamp, boolean()}; (label) -> [] | {label, non_neg_integer()}; (serial) -> [] | {serial, {non_neg_integer(), non_neg_integer()}}. seq_trace_info(_What) -> @@ -2205,7 +2203,9 @@ setelement(_Index, _Tuple1, _Value) -> spawn_opt(_Tuple) -> erlang:nif_error(undefined). --spec statistics(context_switches) -> {ContextSwitches,0} when +-spec statistics(active_tasks) -> [ActiveTasks] when + ActiveTasks :: non_neg_integer(); + (context_switches) -> {ContextSwitches,0} when ContextSwitches :: non_neg_integer(); (exact_reductions) -> {Total_Exact_Reductions, Exact_Reductions_Since_Last_Call} when @@ -2217,11 +2217,23 @@ spawn_opt(_Tuple) -> (io) -> {{input, Input}, {output, Output}} when Input :: non_neg_integer(), Output :: non_neg_integer(); + (microstate_accounting) -> [MSAcc_Thread] | undefined when + MSAcc_Thread :: #{ type => MSAcc_Thread_Type, + id => MSAcc_Thread_Id, + counters => MSAcc_Counters}, + MSAcc_Thread_Type :: scheduler | async | aux, + MSAcc_Thread_Id :: non_neg_integer(), + MSAcc_Counters :: #{ MSAcc_Thread_State => non_neg_integer() }, + MSAcc_Thread_State :: alloc | aux | bif | busy_wait | check_io | + emulator | ets | gc | gc_fullsweep | nif | + other | port | send | sleep | timers; (reductions) -> {Total_Reductions, Reductions_Since_Last_Call} when Total_Reductions :: non_neg_integer(), Reductions_Since_Last_Call :: non_neg_integer(); (run_queue) -> non_neg_integer(); + (run_queue_lengths) -> [RunQueueLenght] when + RunQueueLenght :: non_neg_integer(); (runtime) -> {Total_Run_Time, Time_Since_Last_Call} when Total_Run_Time :: non_neg_integer(), Time_Since_Last_Call :: non_neg_integer(); @@ -2229,6 +2241,10 @@ spawn_opt(_Tuple) -> SchedulerId :: pos_integer(), ActiveTime :: non_neg_integer(), TotalTime :: non_neg_integer(); + (total_active_tasks) -> ActiveTasks when + ActiveTasks :: non_neg_integer(); + (total_run_queue_lengths) -> TotalRunQueueLenghts when + TotalRunQueueLenghts :: non_neg_integer(); (wall_clock) -> {Total_Wallclock_Time, Wallclock_Time_Since_Last_Call} when Total_Wallclock_Time :: non_neg_integer(), @@ -2265,6 +2281,9 @@ subtract(_,_) -> (fullsweep_after, Number) -> OldNumber when Number :: non_neg_integer(), OldNumber :: non_neg_integer(); + (microstate_accounting, Action) -> OldState when + Action :: true | false | reset, + OldState :: true | false; (min_heap_size, MinHeapSize) -> OldMinHeapSize when MinHeapSize :: non_neg_integer(), OldMinHeapSize :: non_neg_integer(); @@ -2426,6 +2445,7 @@ tuple_to_list(_Tuple) -> (multi_scheduling) -> disabled | blocked | enabled; (multi_scheduling_blockers) -> [Pid :: pid()]; (nif_version) -> string(); + (message_queue_data) -> message_queue_data(); (otp_release) -> string(); (os_monotonic_time_source) -> [{atom(),term()}]; (os_system_time_source) -> [{atom(),term()}]; @@ -2553,14 +2573,19 @@ spawn_monitor(M, F, A) when erlang:is_atom(M), spawn_monitor(M, F, A) -> erlang:error(badarg, [M,F,A]). + +-type spawn_opt_option() :: + link + | monitor + | {priority, Level :: priority_level()} + | {fullsweep_after, Number :: non_neg_integer()} + | {min_heap_size, Size :: non_neg_integer()} + | {min_bin_vheap_size, VSize :: non_neg_integer()} + | {message_queue_data, MQD :: message_queue_data()}. + -spec spawn_opt(Fun, Options) -> pid() | {pid(), reference()} when Fun :: function(), - Options :: [Option], - Option :: link | monitor - | {priority, Level :: priority_level()} - | {fullsweep_after, Number :: non_neg_integer()} - | {min_heap_size, Size :: non_neg_integer()} - | {min_bin_vheap_size, VSize :: non_neg_integer()}. + Options :: [spawn_opt_option()]. spawn_opt(F, O) when erlang:is_function(F) -> spawn_opt(erlang, apply, [F, []], O); spawn_opt({M,F}=MF, O) when erlang:is_atom(M), erlang:is_atom(F) -> @@ -2573,12 +2598,7 @@ spawn_opt(F, O) -> -spec spawn_opt(Node, Fun, Options) -> pid() | {pid(), reference()} when Node :: node(), Fun :: function(), - Options :: [Option], - Option :: link | monitor - | {priority, Level :: priority_level()} - | {fullsweep_after, Number :: non_neg_integer()} - | {min_heap_size, Size :: non_neg_integer()} - | {min_bin_vheap_size, VSize :: non_neg_integer()}. + Options :: [spawn_opt_option()]. spawn_opt(N, F, O) when N =:= erlang:node() -> spawn_opt(F, O); spawn_opt(N, F, O) when erlang:is_function(F) -> @@ -2665,12 +2685,7 @@ spawn_link(N,M,F,A) -> Module :: module(), Function :: atom(), Args :: [term()], - Options :: [Option], - Option :: link | monitor - | {priority, Level :: priority_level()} - | {fullsweep_after, Number :: non_neg_integer()} - | {min_heap_size, Size :: non_neg_integer()} - | {min_bin_vheap_size, VSize :: non_neg_integer()}. + Options :: [spawn_opt_option()]. spawn_opt(M, F, A, Opts) -> case catch erlang:spawn_opt({M,F,A,Opts}) of {'EXIT',{Reason,_}} -> @@ -2685,12 +2700,7 @@ spawn_opt(M, F, A, Opts) -> Module :: module(), Function :: atom(), Args :: [term()], - Options :: [Option], - Option :: link | monitor - | {priority, Level :: priority_level()} - | {fullsweep_after, Number :: non_neg_integer()} - | {min_heap_size, Size :: non_neg_integer()} - | {min_bin_vheap_size, VSize :: non_neg_integer()}. + Options :: [spawn_opt_option()]. spawn_opt(N, M, F, A, O) when N =:= erlang:node(), erlang:is_atom(M), erlang:is_atom(F), erlang:is_list(A), erlang:is_list(O) -> diff --git a/erts/preloaded/src/erts.app.src b/erts/preloaded/src/erts.app.src index 8442aaf7e8..e53b6e5bab 100644 --- a/erts/preloaded/src/erts.app.src +++ b/erts/preloaded/src/erts.app.src @@ -27,6 +27,7 @@ erts_internal, init, otp_ring0, + erts_code_purger, prim_eval, prim_file, prim_inet, diff --git a/erts/preloaded/src/erts_code_purger.erl b/erts/preloaded/src/erts_code_purger.erl new file mode 100644 index 0000000000..d1e64342e0 --- /dev/null +++ b/erts/preloaded/src/erts_code_purger.erl @@ -0,0 +1,299 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2016. 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. +%% You may obtain a copy of the License at +%% +%% http://www.apache.org/licenses/LICENSE-2.0 +%% +%% Unless required by applicable law or agreed to in writing, software +%% distributed under the License is distributed on an "AS IS" BASIS, +%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +%% See the License for the specific language governing permissions and +%% limitations under the License. +%% +%% %CopyrightEnd% +%% +-module(erts_code_purger). + +%% Purpose : Implement system process erts_code_purger +%% to handle code module purging. + +-export([start/0, purge/1, soft_purge/1]). + +-spec start() -> term(). +start() -> + register(erts_code_purger, self()), + process_flag(trap_exit, true), + loop(). + +loop() -> + _ = receive + {purge,Mod,From,Ref} when is_atom(Mod), is_pid(From) -> + Res = do_purge(Mod), + From ! {reply, purge, Res, Ref}; + + {soft_purge,Mod,From,Ref} when is_atom(Mod), is_pid(From) -> + Res = do_soft_purge(Mod), + From ! {reply, soft_purge, Res, Ref}; + + _Other -> ignore + end, + loop(). + + +%% purge(Module) +%% Kill all processes running code from *old* Module, and then purge the +%% module. Return {WasOld, DidKill}: +%% {false, false} there was no old module to purge +%% {true, false} module purged, no process killed +%% {true, true} module purged, at least one process killed + +purge(Mod) when is_atom(Mod) -> + Ref = make_ref(), + erts_code_purger ! {purge, Mod, self(), Ref}, + receive + {reply, purge, Result, Ref} -> + Result + end. + + +do_purge(Mod) -> + case erts_internal:copy_literals(Mod, true) of + false -> + {false, false}; + true -> + DidKill = check_proc_code(erlang:processes(), Mod, true), + true = erts_internal:copy_literals(Mod, false), + WasPurged = erts_internal:purge_module(Mod), + {WasPurged, DidKill} + end. + +%% 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) + +soft_purge(Mod) -> + Ref = make_ref(), + erts_code_purger ! {soft_purge, Mod, self(), Ref}, + receive + {reply, soft_purge, Result, Ref} -> + Result + end. + + +do_soft_purge(Mod) -> + case erts_internal:copy_literals(Mod, true) of + false -> + true; + true -> + DoPurge = check_proc_code(erlang:processes(), Mod, false), + true = erts_internal:copy_literals(Mod, false), + case DoPurge of + false -> + false; + true -> + erts_internal:purge_module(Mod), + 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) -> + erts_internal:check_process_code(Pid, Mod, [{async, {Tag, Pid, AllowGc}}, + {allow_gc, AllowGc}, + {copy_literals, true}]). + +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. diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl index 7ed4efea4b..26025d6704 100644 --- a/erts/preloaded/src/erts_internal.erl +++ b/erts/preloaded/src/erts_internal.erl @@ -31,22 +31,30 @@ -export([await_port_send_result/3]). -export([cmp_term/2]). --export([map_to_tuple_keys/1, map_type/1, map_hashmap_children/1]). --export([port_command/3, port_connect/2, port_close/1, +-export([map_to_tuple_keys/1, term_type/1, map_hashmap_children/1]). +-export([open_port/2, port_command/3, port_connect/2, port_close/1, port_control/3, port_call/3, port_info/1, port_info/2]). -export([request_system_task/3]). --export([check_process_code/2]). +-export([check_process_code/3]). +-export([copy_literals/2]). +-export([purge_module/1]). -export([flush_monitor_messages/3]). -export([await_result/1, gather_io_bytes/2]). --export([time_unit/0]). +-export([time_unit/0, perf_counter_unit/0]). -export([is_system_process/1]). +-export([await_microstate_accounting_modifications/3, + gather_microstate_accounting_result/2]). + +%% Auto-import name clash +-export([check_process_code/2]). + %% %% Await result of send to port %% @@ -88,6 +96,13 @@ gather_io_bytes(Ref, No, InAcc, OutAcc) -> %% Statically linked port NIFs %% +-spec erts_internal:open_port(PortName, PortSettings) -> Result when + PortName :: tuple(), + PortSettings :: term(), + Result :: port() | reference() | atom(). +open_port(_PortName, _PortSettings) -> + erlang:nif_error(undefined). + -spec erts_internal:port_command(Port, Data, OptionList) -> Result when Port :: port() | atom(), Data :: iodata(), @@ -184,17 +199,86 @@ port_info(_Result, _Item) -> -spec request_system_task(Pid, Prio, Request) -> 'ok' when Prio :: 'max' | 'high' | 'normal' | 'low', Request :: {'garbage_collect', term()} - | {'check_process_code', term(), module(), boolean()}, + | {'check_process_code', term(), module(), non_neg_integer()}, Pid :: pid(). request_system_task(_Pid, _Prio, _Request) -> erlang:nif_error(undefined). --spec check_process_code(Module, OptionList) -> boolean() when +-define(ERTS_CPC_ALLOW_GC, (1 bsl 0)). +-define(ERTS_CPC_COPY_LITERALS, (1 bsl 1)). + +-spec check_process_code(Module, Flags) -> boolean() when + Module :: module(), + Flags :: non_neg_integer(). +check_process_code(_Module, _Flags) -> + erlang:nif_error(undefined). + +-spec check_process_code(Pid, Module, OptionList) -> CheckResult | async when + Pid :: pid(), + Module :: module(), + RequestId :: term(), + Option :: {async, RequestId} | {allow_gc, boolean()} | {copy_literals, boolean()}, + OptionList :: [Option], + CheckResult :: boolean() | aborted. +check_process_code(Pid, Module, OptionList) -> + {Async, Flags} = get_cpc_opts(OptionList, sync, ?ERTS_CPC_ALLOW_GC), + case Async of + {async, ReqId} -> + {priority, Prio} = erlang:process_info(erlang:self(), + priority), + erts_internal:request_system_task(Pid, + Prio, + {check_process_code, + ReqId, + Module, + Flags}), + async; + sync -> + case Pid == erlang:self() of + true -> + erts_internal:check_process_code(Module, Flags); + false -> + {priority, Prio} = erlang:process_info(erlang:self(), + priority), + ReqId = erlang:make_ref(), + erts_internal:request_system_task(Pid, + Prio, + {check_process_code, + ReqId, + Module, + Flags}), + receive + {check_process_code, ReqId, CheckResult} -> + CheckResult + end + end + end. + +% gets async and flag opts and verify valid option list +get_cpc_opts([{async, _ReqId} = AsyncTuple | Options], _OldAsync, Flags) -> + get_cpc_opts(Options, AsyncTuple, Flags); +get_cpc_opts([{allow_gc, AllowGC} | Options], Async, Flags) -> + get_cpc_opts(Options, Async, cpc_flags(Flags, ?ERTS_CPC_ALLOW_GC, AllowGC)); +get_cpc_opts([{copy_literals, CopyLit} | Options], Async, Flags) -> + get_cpc_opts(Options, Async, cpc_flags(Flags, ?ERTS_CPC_COPY_LITERALS, CopyLit)); +get_cpc_opts([], Async, Flags) -> + {Async, Flags}. + +cpc_flags(OldFlags, Bit, true) -> + OldFlags bor Bit; +cpc_flags(OldFlags, Bit, false) -> + OldFlags band (bnot Bit). + +-spec copy_literals(Module,Bool) -> 'true' | 'false' | 'aborted' when Module :: module(), - Option :: {allow_gc, boolean()}, - OptionList :: [Option]. -check_process_code(_Module, _OptionList) -> + Bool :: boolean(). +copy_literals(_Mod, _Bool) -> + erlang:nif_error(undefined). + +-spec purge_module(Module) -> boolean() when + Module :: module(). +purge_module(_Module) -> erlang:nif_error(undefined). %% term compare where integer() < float() = true @@ -215,12 +299,18 @@ cmp_term(_A,_B) -> map_to_tuple_keys(_M) -> erlang:nif_error(undefined). -%% return the internal map type --spec map_type(M) -> Type when - M :: map(), - Type :: 'flatmap' | 'hashmap' | 'hashmap_node'. - -map_type(_M) -> +%% return the internal term type +-spec term_type(T) -> Type when + T :: term(), + Type :: 'flatmap' | 'hashmap' | 'hashmap_node' + | 'fixnum' | 'bignum' | 'hfloat' + | 'list' | 'tuple' | 'export' | 'fun' + | 'refc_binary' | 'heap_binary' | 'sub_binary' + | 'reference' | 'external_reference' + | 'pid' | 'external_pid' | 'port' | 'external_port' + | 'atom' | 'catch' | 'nil'. + +term_type(_T) -> erlang:nif_error(undefined). %% return the internal hashmap sub-nodes from @@ -258,8 +348,38 @@ flush_monitor_messages(Ref, Multi, Res) when is_reference(Ref) -> time_unit() -> erlang:nif_error(undefined). +-spec erts_internal:perf_counter_unit() -> pos_integer(). + +perf_counter_unit() -> + erlang:nif_error(undefined). + -spec erts_internal:is_system_process(Pid) -> boolean() when Pid :: pid(). is_system_process(_Pid) -> erlang:nif_error(undefined). + +-spec await_microstate_accounting_modifications(Ref, Result, Threads) -> boolean() when + Ref :: reference(), + Result :: boolean(), + Threads :: pos_integer(). + +await_microstate_accounting_modifications(Ref, Result, Threads) -> + _ = microstate_accounting(Ref,Threads), + Result. + +-spec gather_microstate_accounting_result(Ref, Threads) -> [#{}] when + Ref :: reference(), + Threads :: pos_integer(). + +gather_microstate_accounting_result(Ref, Threads) -> + microstate_accounting(Ref, Threads). + +microstate_accounting(_Ref, 0) -> + []; +microstate_accounting(Ref, Threads) -> + receive + Ref -> microstate_accounting(Ref, Threads - 1); + {Ref, Res} -> + [Res | microstate_accounting(Ref, Threads - 1)] + end. diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl index 0ad5824ad1..ed65c57c0d 100644 --- a/erts/preloaded/src/init.erl +++ b/erts/preloaded/src/init.erl @@ -23,7 +23,6 @@ %% a local file or distributed from another erlang node. %% %% Flags: -%% -id Identity : identity of the system. %% -boot File : Absolute file name of the boot script. %% -boot_var Var Value %% : $Var in the boot script is expanded to @@ -75,6 +74,19 @@ subscribed = []}). -type state() :: #state{}. +%% Data for eval_script/2. +-record(es, + {init, + debug, + path, + pa, + pz, + path_choice, + prim_load, + load_mode, + vars + }). + -define(ON_LOAD_HANDLER, init__boot__on_load_handler). debug(false, _) -> ok; @@ -169,8 +181,7 @@ boot(BootArgs) -> process_flag(trap_exit, true), {Start0,Flags,Args} = parse_boot_args(BootArgs), Start = map(fun prepare_run_args/1, Start0), - Flags0 = flags_to_atoms_again(Flags), - boot(Start,Flags0,Args). + boot(Start, Flags, Args). prepare_run_args({eval, [Expr]}) -> {eval,Expr}; @@ -202,16 +213,6 @@ map(_F, []) -> map(F, [X|Rest]) -> [F(X) | map(F, Rest)]. -flags_to_atoms_again([]) -> - []; -flags_to_atoms_again([{F0,L0}|Rest]) -> - L = L0, - F = b2a(F0), - [{F,L}|flags_to_atoms_again(Rest)]; -flags_to_atoms_again([{F0}|Rest]) -> - F = b2a(F0), - [{F}|flags_to_atoms_again(Rest)]. - -spec code_path_choice() -> 'relaxed' | 'strict'. code_path_choice() -> case get_argument(code_path_choice) of @@ -337,7 +338,7 @@ boot_loop(BootPid, State) -> end. ensure_loaded(Module, Loaded) -> - File = concat([Module,objfile_extension()]), + File = atom_to_list(Module) ++ objfile_extension(), case catch load_mod(Module,File) of {ok, FullName} -> {{module, Module}, [{Module, FullName}|Loaded]}; @@ -451,9 +452,9 @@ do_handle_msg(Msg,State) -> %%% ------------------------------------------------- make_permanent(Boot,Config,Flags0,State) -> - case set_flag('-boot',Boot,Flags0) of + case set_flag(boot, Boot, Flags0) of {ok,Flags1} -> - case set_flag('-config',Config,Flags1) of + case set_flag(config, Config, Flags1) of {ok,Flags} -> {ok,State#state{flags = Flags}}; Error -> @@ -635,9 +636,9 @@ unload(_) -> do_unload(sub([heart|erlang:pre_loaded()],erlang:loaded())). do_unload([M|Mods]) -> - catch erlang:purge_module(M), + catch erts_internal:purge_module(M), catch erlang:delete_module(M), - catch erlang:purge_module(M), + catch erts_internal:purge_module(M), do_unload(Mods); do_unload([]) -> purge_all_hipe_refs(), @@ -691,17 +692,15 @@ sleep(T) -> receive after T -> ok end. %%% The loader shall run for ever! %%% ------------------------------------------------- -start_prim_loader(Init,Id,Pgm,Nodes,Path,{Pa,Pz}) -> - case erl_prim_loader:start(Id,Pgm,Nodes) of - {ok,Pid} when Path =:= false -> - InitPath = append(Pa,["."|Pz]), - erl_prim_loader:set_path(InitPath), - add_to_kernel(Init,Pid), - Pid; +start_prim_loader(Init, Path0, {Pa,Pz}) -> + Path = case Path0 of + false -> Pa ++ ["."|Pz]; + _ -> Path0 + end, + case erl_prim_loader:start() of {ok,Pid} -> erl_prim_loader:set_path(Path), - add_to_kernel(Init,Pid), - Pid; + add_to_kernel(Init, Pid); {error,Reason} -> erlang:display({"cannot start loader",Reason}), exit(Reason) @@ -715,13 +714,6 @@ add_to_kernel(Init,Pid) -> ok end. -prim_load_flags(Flags) -> - PortPgm = get_flag('-loader',Flags,<<"efile">>), - Hosts = get_flag_list('-hosts', Flags, []), - Id = get_flag('-id',Flags,none), - Path = get_flag_list('-path',Flags,false), - {PortPgm, Hosts, Id, Path}. - %%% ------------------------------------------------- %%% The boot process fetches a boot script and loads %%% all modules specified and starts spec. processes. @@ -734,24 +726,23 @@ do_boot(Flags,Start) -> do_boot(Init,Flags,Start) -> process_flag(trap_exit,true), - {Pgm0,Nodes,Id,Path} = prim_load_flags(Flags), - Root = b2s(get_flag('-root',Flags)), - PathFls = path_flags(Flags), - Pgm = b2s(Pgm0), - _Pid = start_prim_loader(Init,b2a(Id),Pgm,bs2as(Nodes), - bs2ss(Path),PathFls), + Root = get_root(Flags), + Path = get_flag_list(path, Flags, false), + {Pa,Pz} = PathFls = path_flags(Flags), + start_prim_loader(Init, bs2ss(Path), PathFls), BootFile = bootfile(Flags,Root), BootList = get_boot(BootFile,Root), - LoadMode = b2a(get_flag('-mode',Flags,false)), - Deb = b2a(get_flag('-init_debug',Flags,false)), + LoadMode = b2a(get_flag(mode, Flags, false)), + Deb = b2a(get_flag(init_debug, Flags, false)), catch ?ON_LOAD_HANDLER ! {init_debug_flag,Deb}, - BootVars = get_flag_args('-boot_var',Flags), - ParallelLoad = - (Pgm =:= "efile") and (erlang:system_info(thread_pool_size) > 0), + BootVars = get_boot_vars(Root, Flags), PathChoice = code_path_choice(), - eval_script(BootList,Init,PathFls,{Root,BootVars},Path, - {true,LoadMode,ParallelLoad},Deb,PathChoice), + Es = #es{init=Init,debug=Deb,path=Path,pa=Pa,pz=Pz, + path_choice=PathChoice, + prim_load=true,load_mode=LoadMode, + vars=BootVars}, + eval_script(BootList, Es), %% To help identifying Purify windows that pop up, %% print the node name into the Purify log. @@ -759,21 +750,43 @@ do_boot(Init,Flags,Start) -> start_em(Start). +get_root(Flags) -> + case get_argument(root, Flags) of + {ok,[[Root]]} -> + Root; + _ -> + exit(no_or_multiple_root_variables) + end. + +get_boot_vars(Root, Flags) -> + BootVars = get_boot_vars_1(#{}, Flags), + RootKey = <<"ROOT">>, + BootVars#{RootKey=>Root}. + +get_boot_vars_1(Vars, [{boot_var,[Key,Value]}|T]) -> + get_boot_vars_1(Vars#{Key=>Value}, T); +get_boot_vars_1(_, [{boot_var,_}|_]) -> + exit(invalid_boot_var_argument); +get_boot_vars_1(Vars, [_|T]) -> + get_boot_vars_1(Vars, T); +get_boot_vars_1(Vars, []) -> + Vars. + bootfile(Flags,Root) -> - b2s(get_flag('-boot',Flags,concat([Root,"/bin/start"]))). + b2s(get_flag(boot, Flags, Root++"/bin/start")). path_flags(Flags) -> - Pa = append(reverse(get_flag_args('-pa',Flags))), - Pz = append(get_flag_args('-pz',Flags)), + Pa = append(reverse(get_flag_args(pa, Flags))), + Pz = append(get_flag_args(pz, Flags)), {bs2ss(Pa),bs2ss(Pz)}. get_boot(BootFile0,Root) -> - BootFile = concat([BootFile0,".boot"]), + BootFile = BootFile0 ++ ".boot", case get_boot(BootFile) of {ok, CmdList} -> CmdList; not_found -> %% Check for default. - BootF = concat([Root,"/bin/",BootFile]), + BootF = Root ++ "/bin/" ++ BootFile, case get_boot(BootF) of {ok, CmdList} -> CmdList; @@ -807,93 +820,67 @@ get_boot(BootFile) -> %% boot process hangs (we want to ensure syncronicity). %% -eval_script([{progress,Info}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) -> - debug(Deb,{progress,Info}), +eval_script([{progress,Info}=Progress|T], #es{debug=Deb}=Es) -> + debug(Deb, Progress), init ! {self(),progress,Info}, - eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice); -eval_script([{preLoaded,_}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) -> - eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice); -eval_script([{path,Path}|CfgL],Init,{Pa,Pz},Vars,false,Ph,Deb,PathChoice) -> + eval_script(T, Es); +eval_script([{preLoaded,_}|T], #es{}=Es) -> + eval_script(T, Es); +eval_script([{path,Path}|T], #es{path=false,pa=Pa,pz=Pz, + path_choice=PathChoice, + vars=Vars}=Es) -> RealPath0 = make_path(Pa, Pz, Path, Vars), RealPath = patch_path(RealPath0, PathChoice), erl_prim_loader:set_path(RealPath), - eval_script(CfgL,Init,{Pa,Pz},Vars,false,Ph,Deb,PathChoice); -eval_script([{path,_}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) -> + eval_script(T, Es); +eval_script([{path,_}|T], #es{}=Es) -> %% Ignore, use the command line -path flag. - eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice); -eval_script([{kernel_load_completed}|CfgL],Init,PathFs,Vars,P,{_,embedded,Par},Deb,PathChoice) -> - eval_script(CfgL,Init,PathFs,Vars,P,{true,embedded,Par},Deb,PathChoice); -eval_script([{kernel_load_completed}|CfgL],Init,PathFs,Vars,P,{_,E,Par},Deb,PathChoice) -> - eval_script(CfgL,Init,PathFs,Vars,P,{false,E,Par},Deb,PathChoice); -eval_script([{primLoad,Mods}|CfgL],Init,PathFs,Vars,P,{true,E,Par},Deb,PathChoice) + eval_script(T, Es); +eval_script([{kernel_load_completed}|T], #es{load_mode=Mode}=Es0) -> + Es = case Mode of + embedded -> Es0; + _ -> Es0#es{prim_load=false} + end, + eval_script(T, Es); +eval_script([{primLoad,[Mod]}|T], #es{prim_load=true}=Es) -> + %% Common special case (loading of error_handler). Nothing + %% to gain by parallel loading. + File = atom_to_list(Mod) ++ objfile_extension(), + {ok,Full} = load_mod(Mod, File), + init ! {self(),loaded,{Mod,Full}}, % Tell init about loaded module + eval_script(T, Es); +eval_script([{primLoad,Mods}|T], #es{init=Init,prim_load=PrimLoad}=Es) when is_list(Mods) -> - if - Par =:= true -> - par_load_modules(Mods,Init); + case PrimLoad of true -> - load_modules(Mods) + load_modules(Mods, Init); + false -> + %% Do not load now, code_server does that dynamically! + ok end, - eval_script(CfgL,Init,PathFs,Vars,P,{true,E,Par},Deb,PathChoice); -eval_script([{primLoad,_Mods}|CfgL],Init,PathFs,Vars,P,{false,E,Par},Deb,PathChoice) -> - %% Do not load now, code_server does that dynamically! - eval_script(CfgL,Init,PathFs,Vars,P,{false,E,Par},Deb,PathChoice); -eval_script([{kernelProcess,Server,{Mod,Fun,Args}}|CfgL],Init, - PathFs,Vars,P,Ph,Deb,PathChoice) -> - debug(Deb,{start,Server}), - start_in_kernel(Server,Mod,Fun,Args,Init), - eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice); -eval_script([{apply,{Mod,Fun,Args}}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) -> - debug(Deb,{apply,{Mod,Fun,Args}}), - apply(Mod,Fun,Args), - eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice); -eval_script([],_,_,_,_,_,_,_) -> + eval_script(T, Es); +eval_script([{kernelProcess,Server,{Mod,Fun,Args}}|T], + #es{init=Init,debug=Deb}=Es) -> + debug(Deb, {start,Server}), + start_in_kernel(Server, Mod, Fun, Args, Init), + eval_script(T, Es); +eval_script([{apply,{Mod,Fun,Args}}=Apply|T], #es{debug=Deb}=Es) -> + debug(Deb, Apply), + apply(Mod, Fun, Args), + eval_script(T, Es); +eval_script([], #es{}) -> ok; -eval_script(What,_,_,_,_,_,_,_) -> +eval_script(What, #es{}) -> exit({'unexpected command in bootfile',What}). -load_modules([Mod|Mods]) -> - File = concat([Mod,objfile_extension()]), +load_modules([Mod|Mods], Init) -> + File = atom_to_list(Mod) ++ objfile_extension(), {ok,Full} = load_mod(Mod,File), - init ! {self(),loaded,{Mod,Full}}, %% Tell init about loaded module - load_modules(Mods); -load_modules([]) -> + Init ! {self(),loaded,{Mod,Full}}, %Tell init about loaded module + load_modules(Mods, Init); +load_modules([], _) -> ok. -%%% An optimization: erl_prim_loader gets the chance of loading many -%%% files in parallel, using threads. This will reduce the seek times, -%%% and loaded code can be processed while other threads are waiting -%%% for the disk. The optimization is not tried unless the loader is -%%% "efile" and there is a non-empty pool of threads. -%%% -%%% Many threads are needed to get a good result, so it would be -%%% beneficial to load several applications in parallel. However, -%%% measurements show that the file system handles one directory at a -%%% time, regardless if parallel threads are created for files on -%%% several directories (a guess: writing the meta information when -%%% the file was last read ('mtime'), forces the file system to sync -%%% between directories). - -par_load_modules(Mods,Init) -> - Ext = objfile_extension(), - ModFiles = [{Mod,concat([Mod,Ext])} || Mod <- Mods, - not erlang:module_loaded(Mod)], - Self = self(), - Fun = fun(Mod, BinCode, FullName) -> - case catch load_mod_code(Mod, BinCode, FullName) of - {ok, _} -> - Init ! {Self,loaded,{Mod,FullName}}, - ok; - _EXIT -> - {error, Mod} - end - end, - case erl_prim_loader:get_files(ModFiles, Fun) of - ok -> - ok; - {error,Mod} -> - exit({'cannot load',Mod,get_files}) - end. - make_path(Pa, Pz, Path, Vars) -> append([Pa,append([fix_path(Path,Vars),Pz])]). @@ -908,34 +895,25 @@ fix_path([Path|Ps], Vars) -> fix_path(_, _) -> []. -add_var("$ROOT/" ++ Path, {Root,_}) -> - concat([Root, "/", Path]); -add_var([$$|Path0], {_,VarList}) -> - {Var,Path} = extract_var(Path0,[]), - Value = b2s(get_var_value(list_to_binary(Var),VarList)), - concat([Value, "/", Path]); -add_var(Path, _) -> +add_var("$"++Path0, Vars) -> + {Var,Path} = extract_var(Path0, []), + Key = list_to_binary(Var), + case Vars of + #{Key:=Value0} -> + Value = b2s(Value0), + Value ++ "/" ++ Path; + _ -> + Error0 = "cannot expand $" ++ Var ++ " in bootfile", + Error = list_to_atom(Error0), + exit(Error) + end; +add_var(Path, _) -> Path. extract_var([$/|Path],Var) -> {reverse(Var),Path}; extract_var([H|T],Var) -> extract_var(T,[H|Var]); extract_var([],Var) -> {reverse(Var),[]}. -%% get_var_value(Var, [Vars]) where Vars == [atom()] -get_var_value(Var,[Vars|VarList]) -> - case get_var_val(Var,Vars) of - {ok, Value} -> - Value; - _ -> - get_var_value(Var,VarList) - end; -get_var_value(Var,[]) -> - exit(list_to_atom(concat(["cannot expand \$", Var, " in bootfile"]))). - -get_var_val(Var,[Var,Value|_]) -> {ok, Value}; -get_var_val(Var,[_,_|Vars]) -> get_var_val(Var,Vars); -get_var_val(_,_) -> false. - patch_path(Dirs, strict) -> Dirs; patch_path(Dirs, relaxed) -> @@ -1049,18 +1027,10 @@ start_it({eval,Bin}) -> {value, _Value, _Bs} = erl_eval:exprs(Expr, erl_eval:new_bindings()), ok; start_it([_|_]=MFA) -> - Ref = make_ref(), - case catch {Ref,case MFA of - [M] -> M:start(); - [M,F] -> M:F(); - [M,F|Args] -> M:F(Args) % Args is a list - end} of - {Ref,R} -> - R; - {'EXIT',Reason} -> - exit(Reason); - Other -> - throw(Other) + case MFA of + [M] -> M:start(); + [M,F] -> M:F(); + [M,F|Args] -> M:F(Args) % Args is a list end. %% @@ -1102,7 +1072,7 @@ load_mod_code(Mod, BinCode, FullName) -> %% -------------------------------------------------------- shutdown_timer(Flags) -> - case get_flag('-shutdown_time',Flags,infinity) of + case get_flag(shutdown_time, Flags, infinity) of infinity -> self(); Time -> @@ -1152,14 +1122,10 @@ parse_boot_args([B|Bs], Ss, Fs, As) -> eval_arg -> {Expr,Rest} = get_args(Bs, []), parse_boot_args(Rest, [{eval, Expr}|Ss], Fs, As); - flag -> + {flag,A} -> {F,Rest} = get_args(Bs, []), - Fl = case F of - [] -> [B]; - FF -> [B,FF] - end, - parse_boot_args(Rest, Ss, - [list_to_tuple(Fl)|Fs], As); + Fl = {A,F}, + parse_boot_args(Rest, Ss, [Fl|Fs], As); arg -> parse_boot_args(Bs, Ss, Fs, [B|As]); end_args -> @@ -1173,12 +1139,8 @@ check(<<"-s">>) -> start_arg; check(<<"-run">>) -> start_arg2; check(<<"-eval">>) -> eval_arg; check(<<"--">>) -> end_args; -check(X) when is_binary(X) -> - case binary_to_list(X) of - [$-|_Rest] -> flag; - _Chars -> arg %Even empty atoms - end; -check(_X) -> arg. %This should never occur +check(<<"-",Flag/binary>>) -> {flag,b2a(Flag)}; +check(_) -> arg. get_args([B|Bs], As) -> case check(B) of @@ -1187,7 +1149,7 @@ get_args([B|Bs], As) -> start_arg2 -> {reverse(As), [B|Bs]}; eval_arg -> {reverse(As), [B|Bs]}; end_args -> {reverse(As), Bs}; - flag -> {reverse(As), [B|Bs]}; + {flag,_} -> {reverse(As), [B|Bs]}; arg -> get_args(Bs, [B|As]) end; @@ -1199,44 +1161,28 @@ get_args([], As) -> {reverse(As),[]}. %% atom() if a single arg was given. %% list(atom()) if several args were given. %% -get_flag(F,Flags,Default) -> - case catch get_flag(F,Flags) of - {'EXIT',_} -> - Default; - Value -> - Value - end. - -get_flag(F,Flags) -> - case search(F,Flags) of - {value,{F,[V]}} -> +get_flag(F, Flags, Default) -> + case lists:keyfind(F, 1, Flags) of + {F,[]} -> + true; + {F,[V]} -> V; - {value,{F,V}} -> + {F,V} -> V; - {value,{F}} -> % Flag given! - true; _ -> - exit(list_to_atom(concat(["no ",F," flag"]))) + Default end. %% %% Internal get_flag function, with default value. %% Return: list(atom()) %% -get_flag_list(F,Flags,Default) -> - case catch get_flag_list(F,Flags) of - {'EXIT',_} -> - Default; - Value -> - Value - end. - -get_flag_list(F,Flags) -> - case search(F,Flags) of - {value,{F,V}} -> +get_flag_list(F, Flags, Default) -> + case lists:keyfind(F, 1, Flags) of + {F,[_|_]=V} -> V; _ -> - exit(list_to_atom(concat(["no ",F," flag"]))) + Default end. %% @@ -1246,21 +1192,15 @@ get_flag_list(F,Flags) -> %% get_flag_args(F,Flags) -> get_flag_args(F,Flags,[]). -get_flag_args(F,[{F,V}|Flags],Acc) when is_list(V) -> - get_flag_args(F,Flags,[V|Acc]); get_flag_args(F,[{F,V}|Flags],Acc) -> - get_flag_args(F,Flags,[[V]|Acc]); + get_flag_args(F,Flags,[V|Acc]); get_flag_args(F,[_|Flags],Acc) -> get_flag_args(F,Flags,Acc); get_flag_args(_,[],Acc) -> reverse(Acc). get_arguments([{F,V}|Flags]) -> - [$-|Fl] = atom_to_list(F), - [{list_to_atom(Fl),to_strings(V)}|get_arguments(Flags)]; -get_arguments([{F}|Flags]) -> - [$-|Fl] = atom_to_list(F), - [{list_to_atom(Fl),[]}|get_arguments(Flags)]; + [{F,to_strings(V)}|get_arguments(Flags)]; get_arguments([]) -> []. @@ -1268,44 +1208,26 @@ to_strings([H|T]) when is_atom(H) -> [atom_to_list(H)|to_strings(T)]; to_strings([H|T]) when is_binary(H) -> [b2s(H)|to_strings(T)]; to_strings([]) -> []. -get_argument(Arg,Flags) -> - Args = get_arguments(Flags), - case get_argument1(Arg,Args) of - [] -> - error; - Value -> - {ok,Value} +get_argument(Arg, Flags) -> + case get_argument1(Arg, Flags) of + [] -> error; + Value -> {ok,Value} end. -get_argument1(Arg,[{Arg,V}|Args]) -> - [V|get_argument1(Arg,Args)]; -get_argument1(Arg,[_|Args]) -> - get_argument1(Arg,Args); -get_argument1(_,[]) -> +get_argument1(Arg, [{Arg,V}|Args]) -> + [to_strings(V)|get_argument1(Arg, Args)]; +get_argument1(Arg, [_|Args]) -> + get_argument1(Arg, Args); +get_argument1(_, []) -> []. set_argument([{Flag,_}|Flags],Flag,Value) -> [{Flag,[Value]}|Flags]; -set_argument([{Flag}|Flags],Flag,Value) -> - [{Flag,[Value]}|Flags]; set_argument([Item|Flags],Flag,Value) -> [Item|set_argument(Flags,Flag,Value)]; set_argument([],Flag,Value) -> [{Flag,[Value]}]. -concat([A|T]) when is_atom(A) -> - atom_to_list(A) ++ concat(T); -concat([C|T]) when is_integer(C), 0 =< C, C =< 255 -> - [C|concat(T)]; -concat([Bin|T]) when is_binary(Bin) -> - binary_to_list(Bin) ++ concat(T); -concat([S|T]) -> - S ++ concat(T); -concat([]) -> - []. - -append(L, Z) -> L ++ Z. - append([E]) -> E; append([H|T]) -> H ++ append(T); @@ -1320,13 +1242,6 @@ reverse([A, B]) -> reverse([A, B | L]) -> lists:reverse(L, [B, A]). % BIF -search(Key, [H|_T]) when is_tuple(H), element(1, H) =:= Key -> - {value, H}; -search(Key, [_|T]) -> - search(Key, T); -search(_Key, []) -> - false. - -spec objfile_extension() -> nonempty_string(). objfile_extension() -> ".beam". diff --git a/erts/preloaded/src/prim_file.erl b/erts/preloaded/src/prim_file.erl index c87b2645ec..ab5359ebbc 100644 --- a/erts/preloaded/src/prim_file.erl +++ b/erts/preloaded/src/prim_file.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2000-2013. All Rights Reserved. +%% Copyright Ericsson AB 2000-2016. 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. @@ -1276,6 +1276,7 @@ lseek_position(_) -> %% Translates the response from the driver into %% {ok, Result} or {error, Reason}. +-dialyzer({no_improper_lists, translate_response/2}). translate_response(?FILE_RESP_OK, []) -> ok; translate_response(?FILE_RESP_ERROR, List) when is_list(List) -> |