diff options
Diffstat (limited to 'lib/kernel/src/code.erl')
| -rw-r--r-- | lib/kernel/src/code.erl | 164 |
1 files changed, 110 insertions, 54 deletions
diff --git a/lib/kernel/src/code.erl b/lib/kernel/src/code.erl index b0f99305f2..b7fda69ce0 100644 --- a/lib/kernel/src/code.erl +++ b/lib/kernel/src/code.erl @@ -82,7 +82,8 @@ %% add_pathsa([Dir]) -> ok %% add_pathsz([Dir]) -> ok %% del_path(Dir) -> boolean() | {error, bad_name} -%% replace_path(Name, Dir) -> true | replace_path_error() +%% replace_path(Name, Dir) -> true | {error, bad_directory | bad_name +%% | {badarg,_}} %% load_file(Module) -> {module, Module} | {error, What :: atom()} %% load_abs(File) -> {module, Module} | {error, What :: atom()} %% load_abs(File, Module) -> {module, Module} | {error, What :: atom()} @@ -113,11 +114,16 @@ %% Some types for basic exported functions of this module %%---------------------------------------------------------------------------- --type load_error_rsn() :: 'badfile' | 'native_code' | 'nofile' | 'not_purged' - | 'sticky_directory'. % for some functions only --type load_ret() :: {'error', load_error_rsn()} | {'module', atom()}. +-type load_error_rsn() :: 'badfile' + | 'native_code' + | 'nofile' + | 'not_purged' + | 'on_load' + | 'sticky_directory'. +-type load_ret() :: {'error', What :: load_error_rsn()} + | {'module', Module :: module()}. -type loaded_ret_atoms() :: 'cover_compiled' | 'preloaded'. --type loaded_filename() :: file:filename() | loaded_ret_atoms(). +-type loaded_filename() :: (Filename :: file:filename()) | loaded_ret_atoms(). %%---------------------------------------------------------------------------- %% User interface @@ -127,55 +133,74 @@ objfile_extension() -> init:objfile_extension(). --spec load_file(Module :: atom()) -> load_ret(). +-spec load_file(Module) -> load_ret() when + Module :: module(). load_file(Mod) when is_atom(Mod) -> call({load_file,Mod}). --spec ensure_loaded(Module :: atom()) -> load_ret(). +-spec ensure_loaded(Module) -> {module, Module} | {error, What} when + Module :: module(), + What :: embedded | badfile | native_code | nofile | on_load. ensure_loaded(Mod) when is_atom(Mod) -> call({ensure_loaded,Mod}). %% XXX File as an atom is allowed only for backwards compatibility. --spec load_abs(Filename :: file:filename()) -> load_ret(). +-spec load_abs(Filename) -> load_ret() when + Filename :: file:filename(). load_abs(File) when is_list(File); is_atom(File) -> call({load_abs,File,[]}). %% XXX Filename is also an atom(), e.g. 'cover_compiled' --spec load_abs(Filename :: loaded_filename(), Module :: atom()) -> load_ret(). +-spec load_abs(Filename :: loaded_filename(), Module :: module()) -> load_ret(). load_abs(File, M) when (is_list(File) orelse is_atom(File)), is_atom(M) -> call({load_abs,File,M}). %% XXX Filename is also an atom(), e.g. 'cover_compiled' --spec load_binary(Module :: atom(), Filename :: loaded_filename(), Binary :: binary()) -> load_ret(). +-spec load_binary(Module, Filename, Binary) -> + {module, Module} | {error, What} when + Module :: module(), + Filename :: loaded_filename(), + Binary :: binary(), + What :: badarg | load_error_rsn(). load_binary(Mod, File, Bin) when is_atom(Mod), (is_list(File) orelse is_atom(File)), is_binary(Bin) -> call({load_binary,Mod,File,Bin}). --spec load_native_partial(Module :: atom(), Binary :: binary()) -> load_ret(). +-spec load_native_partial(Module :: module(), Binary :: binary()) -> load_ret(). load_native_partial(Mod, Bin) when is_atom(Mod), is_binary(Bin) -> call({load_native_partial,Mod,Bin}). --spec load_native_sticky(Module :: atom(), Binary :: binary(), WholeModule :: 'false' | binary()) -> load_ret(). +-spec load_native_sticky(Module :: module(), Binary :: binary(), WholeModule :: 'false' | binary()) -> load_ret(). load_native_sticky(Mod, Bin, WholeModule) when is_atom(Mod), is_binary(Bin), (is_binary(WholeModule) orelse WholeModule =:= false) -> call({load_native_sticky,Mod,Bin,WholeModule}). --spec delete(Module :: atom()) -> boolean(). +-spec delete(Module) -> boolean() when + Module :: module(). delete(Mod) when is_atom(Mod) -> call({delete,Mod}). --spec purge(Module :: atom()) -> boolean(). +-spec purge(Module) -> boolean() when + Module :: module(). purge(Mod) when is_atom(Mod) -> call({purge,Mod}). --spec soft_purge(Module :: atom()) -> boolean(). +-spec soft_purge(Module) -> boolean() when + Module :: module(). soft_purge(Mod) when is_atom(Mod) -> call({soft_purge,Mod}). --spec is_loaded(Module :: atom()) -> {'file', loaded_filename()} | 'false'. +-spec is_loaded(Module) -> {'file', Loaded} | false when + Module :: module(), + Loaded :: loaded_filename(). is_loaded(Mod) when is_atom(Mod) -> call({is_loaded,Mod}). --spec get_object_code(Module :: atom()) -> {atom(), binary(), file:filename()} | 'error'. +-spec get_object_code(Module) -> {Module, Binary, Filename} | error when + Module :: module(), + Binary :: binary(), + Filename :: file:filename(). get_object_code(Mod) when is_atom(Mod) -> call({get_object_code, Mod}). --spec all_loaded() -> [{atom(), loaded_filename()}]. +-spec all_loaded() -> [{Module, Loaded}] when + Module :: module(), + Loaded :: loaded_filename(). all_loaded() -> call(all_loaded). -spec stop() -> no_return(). @@ -188,65 +213,86 @@ root_dir() -> call({dir,root_dir}). lib_dir() -> call({dir,lib_dir}). %% XXX is_list() is for backwards compatibility -- take out in future version --spec lib_dir(App :: atom()) -> file:filename() | {'error', 'bad_name'}. +-spec lib_dir(Name) -> file:filename() | {'error', 'bad_name'} when + Name :: atom(). lib_dir(App) when is_atom(App) ; is_list(App) -> call({dir,{lib_dir,App}}). --spec lib_dir(App :: atom(), SubDir :: atom()) -> file:filename() | {'error', 'bad_name'}. +-spec lib_dir(Name, SubDir) -> file:filename() | {'error', 'bad_name'} when + Name :: atom(), + SubDir :: atom(). lib_dir(App, SubDir) when is_atom(App), is_atom(SubDir) -> call({dir,{lib_dir,App,SubDir}}). -spec compiler_dir() -> file:filename(). compiler_dir() -> call({dir,compiler_dir}). %% XXX is_list() is for backwards compatibility -- take out in future version --spec priv_dir(App :: atom()) -> file:filename() | {'error', 'bad_name'}. +-spec priv_dir(Name) -> file:filename() | {'error', 'bad_name'} when + Name :: atom(). priv_dir(App) when is_atom(App) ; is_list(App) -> call({dir,{priv_dir,App}}). --spec stick_dir(Directory :: file:filename()) -> 'ok' | 'error'. +-spec stick_dir(Dir) -> 'ok' | 'error' when + Dir :: file:filename(). stick_dir(Dir) when is_list(Dir) -> call({stick_dir,Dir}). --spec unstick_dir(Directory :: file:filename()) -> 'ok' | 'error'. +-spec unstick_dir(Dir) -> 'ok' | 'error' when + Dir :: file:filename(). unstick_dir(Dir) when is_list(Dir) -> call({unstick_dir,Dir}). --spec stick_mod(Module :: atom()) -> 'true'. +-spec stick_mod(Module :: module()) -> 'true'. stick_mod(Mod) when is_atom(Mod) -> call({stick_mod,Mod}). --spec unstick_mod(Module :: atom()) -> 'true'. +-spec unstick_mod(Module :: module()) -> 'true'. unstick_mod(Mod) when is_atom(Mod) -> call({unstick_mod,Mod}). --spec is_sticky(Module :: atom()) -> boolean(). +-spec is_sticky(Module) -> boolean() when + Module :: module(). is_sticky(Mod) when is_atom(Mod) -> call({is_sticky,Mod}). --spec set_path(Directories :: [file:filename()]) -> - 'true' | {'error', 'bad_directory' | 'bad_path'}. +-spec set_path(Path) -> 'true' | {'error', What} when + Path :: [Dir :: file:filename()], + What :: 'bad_directory' | 'bad_path'. set_path(PathList) when is_list(PathList) -> call({set_path,PathList}). --spec get_path() -> [file:filename()]. +-spec get_path() -> Path when + Path :: [Dir :: file:filename()]. get_path() -> call(get_path). -type add_path_ret() :: 'true' | {'error', 'bad_directory'}. --spec add_path(Directory :: file:filename()) -> add_path_ret(). +-spec add_path(Dir) -> add_path_ret() when + Dir :: file:filename(). add_path(Dir) when is_list(Dir) -> call({add_path,last,Dir}). --spec add_pathz(Directory :: file:filename()) -> add_path_ret(). +-spec add_pathz(Dir) -> add_path_ret() when + Dir :: file:filename(). add_pathz(Dir) when is_list(Dir) -> call({add_path,last,Dir}). --spec add_patha(Directory :: file:filename()) -> add_path_ret(). +-spec add_patha(Dir) -> add_path_ret() when + Dir :: file:filename(). add_patha(Dir) when is_list(Dir) -> call({add_path,first,Dir}). --spec add_paths(Directories :: [file:filename()]) -> 'ok'. +-spec add_paths(Dirs) -> 'ok' when + Dirs :: [Dir :: file:filename()]. add_paths(Dirs) when is_list(Dirs) -> call({add_paths,last,Dirs}). --spec add_pathsz(Directories :: [file:filename()]) -> 'ok'. +-spec add_pathsz(Dirs) -> 'ok' when + Dirs :: [Dir :: file:filename()]. add_pathsz(Dirs) when is_list(Dirs) -> call({add_paths,last,Dirs}). --spec add_pathsa(Directories :: [file:filename()]) -> 'ok'. +-spec add_pathsa(Dirs) -> 'ok' when + Dirs :: [Dir :: file:filename()]. add_pathsa(Dirs) when is_list(Dirs) -> call({add_paths,first,Dirs}). --spec del_path(Name :: file:filename() | atom()) -> boolean() | {'error', 'bad_name'}. +-spec del_path(NameOrDir) -> boolean() | {'error', What} when + NameOrDir :: Name | Dir, + Name :: atom(), + Dir :: file:filename(), + What :: 'bad_name'. del_path(Name) when is_list(Name) ; is_atom(Name) -> call({del_path,Name}). --type replace_path_error() :: {'error', 'bad_directory' | 'bad_name' | {'badarg',_}}. --spec replace_path(Name:: atom(), Dir :: file:filename()) -> 'true' | replace_path_error(). +-spec replace_path(Name, Dir) -> 'true' | {'error', What} when + Name:: atom(), + Dir :: file:filename(), + What :: 'bad_directory' | 'bad_name' | {'badarg',_}. replace_path(Name, Dir) when (is_atom(Name) orelse is_list(Name)), (is_atom(Dir) orelse is_list(Dir)) -> call({replace_path,Name,Dir}). @@ -278,15 +324,7 @@ start_link(Flags) -> %%----------------------------------------------------------------- do_start(Flags) -> - %% The following module_info/1 calls are here to ensure - %% that these modules are loaded prior to their use elsewhere in - %% the code_server. - %% Otherwise a deadlock may occur when the code_server is starting. - code_server = code_server:module_info(module), - packages = packages:module_info(module), - catch hipe_unified_loader:load_hipe_modules(), - Modules2 = [gb_sets, gb_trees, ets, os, binary, unicode, filename, lists], - lists:foreach(fun (M) -> M = M:module_info(module) end, Modules2), + load_code_server_prerequisites(), Mode = get_mode(Flags), case init:get_argument(root) of @@ -314,6 +352,25 @@ do_start(Flags) -> {error, crash} end. +%% Make sure that all modules that the code_server process calls +%% (directly or indirectly) are loaded. Otherwise the code_server +%% process will deadlock. + +load_code_server_prerequisites() -> + %% Please keep the alphabetical order. + Needed = [binary, + ets, + filename, + gb_sets, + gb_trees, + hipe_unified_loader, + lists, + os, + packages, + unicode], + [M = M:module_info(module) || M <- Needed], + ok. + do_stick_dirs() -> do_s(compiler), do_s(stdlib), @@ -351,10 +408,9 @@ get_mode(Flags) -> %% In that case return the name of the file which contains %% the loaded object code --type which_ret_atoms() :: loaded_ret_atoms() | 'non_existing'. - --spec which(Module :: atom()) -> file:filename() | which_ret_atoms(). - +-spec which(Module) -> Which when + Module :: module(), + Which :: file:filename() | loaded_ret_atoms() | non_existing. which(Module) when is_atom(Module) -> case is_loaded(Module) of false -> @@ -394,9 +450,9 @@ which(File, Base, [Directory|Tail]) -> %% Search the code path for a specific file. Try to locate %% it in the code path cache if possible. --spec where_is_file(Filename :: file:filename()) -> - 'non_existing' | file:filename(). - +-spec where_is_file(Filename) -> non_existing | Absname when + Filename :: file:filename(), + Absname :: file:filename(). where_is_file(File) when is_list(File) -> case call({is_cached,File}) of no -> |