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-rw-r--r--erts/doc/src/erl_prim_loader.xml40
-rw-r--r--erts/preloaded/src/erl_prim_loader.erl65
-rw-r--r--erts/preloaded/src/init.erl51
3 files changed, 56 insertions, 100 deletions
diff --git a/erts/doc/src/erl_prim_loader.xml b/erts/doc/src/erl_prim_loader.xml
index db4f132609..6fdec8c89e 100644
--- a/erts/doc/src/erl_prim_loader.xml
+++ b/erts/doc/src/erl_prim_loader.xml
@@ -50,36 +50,9 @@
<c>-loader_debug</c> are also experimental</p></warning>
</description>
- <datatypes>
- <datatype>
- <name name="host"/>
- </datatype>
- </datatypes>
<funcs>
<func>
- <name name="start" arity="3"/>
- <fsummary>Start the Erlang low level loader</fsummary>
- <desc>
- <p>Starts the Erlang low level loader. This function is called
- by the <c>init</c> process (and module). The <c>init</c>
- process reads the command line flags <c>-id <anno>Id</anno></c>,
- <c>-loader <anno>Loader</anno></c>, and <c>-hosts <anno>Hosts</anno></c>. These are
- the arguments supplied to the <c>start/3</c> function.</p>
- <p>If <c>-loader</c> is not given, the default loader is
- <c>efile</c> which tells the system to read from the file
- system.</p>
- <p>If <c>-loader</c> is <c>inet</c>, the <c>-id <anno>Id</anno></c>,
- <c>-hosts <anno>Hosts</anno></c>, and <c>-setcookie Cookie</c> flags must
- also be supplied. <c><anno>Hosts</anno></c> identifies hosts which this
- node can contact in order to load modules. One Erlang
- runtime system with a <c>erl_boot_server</c> process must be
- started on each of hosts given in <c><anno>Hosts</anno></c> in order to
- answer the requests. See <seealso
- marker="kernel:erl_boot_server">erl_boot_server(3)</seealso>.</p>
- </desc>
- </func>
- <func>
<name name="get_file" arity="1"/>
<fsummary>Get a file</fsummary>
<desc>
@@ -189,17 +162,12 @@
<p>Specifies which other Erlang nodes the <c>inet</c> loader
can use. This flag is mandatory if the <c>-loader inet</c>
flag is present. On each host, there must be on Erlang node
- with the <c>erl_boot_server</c> which handles the load
- requests. <c>Hosts</c> is a list of IP addresses (hostnames
+ with the <seealso
+ marker="kernel:erl_boot_server">erl_boot_server(3)</seealso>
+ which handles the load requests.
+ <c>Hosts</c> is a list of IP addresses (hostnames
are not acceptable).</p>
</item>
- <tag><c>-id Id</c></tag>
- <item>
- <p>Specifies the identity of the Erlang runtime system. If
- the system runs as a distributed node, <c>Id</c> must be
- identical to the name supplied with the <c>-sname</c> or
- <c>-name</c> distribution flags.</p>
- </item>
<tag><c>-setcookie Cookie</c></tag>
<item>
<p>Specifies the cookie of the Erlang runtime system. This flag
diff --git a/erts/preloaded/src/erl_prim_loader.erl b/erts/preloaded/src/erl_prim_loader.erl
index a8d1e4df76..041b54ee0d 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,
+-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
@@ -64,9 +64,8 @@
-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(),
prim_state :: prim_state()}). % state for efile code loader
@@ -102,26 +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};
@@ -129,26 +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
@@ -159,15 +159,14 @@ start_it("efile", Id, Pid, _Hosts) ->
erlang:display(Report),
exit({error, invalid_current_directory});
_ ->
- init_ack(Pid)
+ init_ack(Parent)
end,
PS = prim_init(),
State = #state {loader = efile,
- id = Id,
data = Port,
timeout = infinity,
prim_state = PS},
- loop(State, Pid, []).
+ loop(State, Parent, []).
init_ack(Pid) ->
Pid ! {self(),ok},
@@ -1262,11 +1261,7 @@ string_split2(_, _Ext, _RevBase, _RevTop, SaveFile, SaveExt, SaveTop) ->
%% 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;
diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl
index b5c1d46e60..197bc5fde8 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
@@ -693,17 +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)
@@ -717,13 +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.
@@ -736,12 +726,10 @@ do_boot(Flags,Start) ->
do_boot(Init,Flags,Start) ->
process_flag(trap_exit,true),
- {Pgm0,Nodes,Id,Path} = prim_load_flags(Flags),
Root = get_root(Flags),
+ Path = get_flag_list(path, Flags, false),
{Pa,Pz} = PathFls = path_flags(Flags),
- Pgm = b2s(Pgm0),
- _Pid = start_prim_loader(Init,b2a(Id),Pgm,bs2as(Nodes),
- bs2ss(Path),PathFls),
+ start_prim_loader(Init, bs2ss(Path), PathFls),
BootFile = bootfile(Flags,Root),
BootList = get_boot(BootFile,Root),
LoadMode = b2a(get_flag(mode, Flags, false)),
@@ -854,11 +842,18 @@ eval_script([{kernel_load_completed}|T], #es{load_mode=Mode}=Es0) ->
_ -> Es0#es{prim_load=false}
end,
eval_script(T, Es);
-eval_script([{primLoad,Mods}|T], #es{prim_load=PrimLoad}=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) ->
case PrimLoad of
true ->
- load_modules(Mods);
+ load_modules(Mods, Init);
false ->
%% Do not load now, code_server does that dynamically!
ok
@@ -878,12 +873,12 @@ eval_script([], #es{}) ->
eval_script(What, #es{}) ->
exit({'unexpected command in bootfile',What}).
-load_modules([Mod|Mods]) ->
+load_modules([Mod|Mods], Init) ->
File = concat([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.
make_path(Pa, Pz, Path, Vars) ->
@@ -1244,8 +1239,6 @@ concat([S|T]) ->
concat([]) ->
[].
-append(L, Z) -> L ++ Z.
-
append([E]) -> E;
append([H|T]) ->
H ++ append(T);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 12:35:53 +0000