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-rw-r--r--lib/stdlib/src/sys.erl182
1 files changed, 166 insertions, 16 deletions
diff --git a/lib/stdlib/src/sys.erl b/lib/stdlib/src/sys.erl
index 12209c16d7..8ab72c9b50 100644
--- a/lib/stdlib/src/sys.erl
+++ b/lib/stdlib/src/sys.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2011. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -33,22 +33,74 @@
%%-----------------------------------------------------------------
-type name() :: pid() | atom() | {'global', atom()}.
--type system_event() :: {'in', _Msg} | {'in', _Msg, _From} | {'out', _Msg, _To}.
+-type system_event() :: {'in', Msg :: _}
+ | {'in', Msg :: _, From :: _}
+ | {'out', Msg :: _, To :: _}
+ | term().
+-opaque dbg_opt() :: list().
+-type dbg_fun() :: fun((FuncState :: _,
+ Event :: system_event(),
+ ProcState :: _) -> 'done' | (NewFuncState :: _)).
%%-----------------------------------------------------------------
%% System messages
%%-----------------------------------------------------------------
+-spec suspend(Name) -> Void when
+ Name :: name(),
+ Void :: term().
suspend(Name) -> send_system_msg(Name, suspend).
+-spec suspend(Name, Timeout) -> Void when
+ Name :: name(),
+ Timeout :: timeout(),
+ Void :: term().
suspend(Name, Timeout) -> send_system_msg(Name, suspend, Timeout).
+-spec resume(Name) -> Void when
+ Name :: name(),
+ Void :: term().
resume(Name) -> send_system_msg(Name, resume).
+-spec resume(Name, Timeout) -> Void when
+ Name :: name(),
+ Timeout :: timeout(),
+ Void :: term().
resume(Name, Timeout) -> send_system_msg(Name, resume, Timeout).
+-spec get_status(Name) -> Status when
+ Name :: name(),
+ Status :: {status, Pid :: pid(), {module, Module :: module()}, [SItem]},
+ SItem :: (PDict :: [{Key :: term(), Value :: term()}])
+ | (SysState :: 'running' | 'suspended')
+ | (Parent :: pid())
+ | (Dbg :: dbg_opt())
+ | (Misc :: term()).
get_status(Name) -> send_system_msg(Name, get_status).
+-spec get_status(Name, Timeout) -> Status when
+ Name :: name(),
+ Timeout :: timeout(),
+ Status :: {status, Pid :: pid(), {module, Module :: module()}, [SItem]},
+ SItem :: (PDict :: [{Key :: term(), Value :: term()}])
+ | (SysState :: 'running' | 'suspended')
+ | (Parent :: pid())
+ | (Dbg :: dbg_opt())
+ | (Misc :: term()).
get_status(Name, Timeout) -> send_system_msg(Name, get_status, Timeout).
+-spec change_code(Name, Module, OldVsn, Extra) -> 'ok' | {error, Reason} when
+ Name :: name(),
+ Module :: module(),
+ OldVsn :: 'undefined' | term(),
+ Extra :: term(),
+ Reason :: term().
change_code(Name, Mod, Vsn, Extra) ->
send_system_msg(Name, {change_code, Mod, Vsn, Extra}).
+-spec change_code(Name, Module, OldVsn, Extra, Timeout) ->
+ 'ok' | {error, Reason} when
+ Name :: name(),
+ Module :: module(),
+ OldVsn :: 'undefined' | term(),
+ Extra :: term(),
+ Timeout :: timeout(),
+ Reason :: term().
change_code(Name, Mod, Vsn, Extra, Timeout) ->
send_system_msg(Name, {change_code, Mod, Vsn, Extra}, Timeout).
@@ -56,52 +108,116 @@ change_code(Name, Mod, Vsn, Extra, Timeout) ->
%% Debug commands
%%-----------------------------------------------------------------
--type log_flag() :: 'true' | {'true',pos_integer()} | 'false' | 'get' | 'print'.
-
--spec log(name(), log_flag()) -> 'ok' | {'ok', [system_event()]}.
+-spec log(Name, Flag) -> 'ok' | {'ok', [system_event()]} when
+ Name :: name(),
+ Flag :: 'true' |
+ {'true', N :: pos_integer()}
+ | 'false' | 'get' | 'print'.
log(Name, Flag) ->
send_system_msg(Name, {debug, {log, Flag}}).
--spec log(name(), log_flag(), timeout()) -> 'ok' | {'ok', [system_event()]}.
+-spec log(Name, Flag, Timeout) -> 'ok' | {'ok', [system_event()]} when
+ Name :: name(),
+ Flag :: 'true' |
+ {'true', N :: pos_integer()}
+ | 'false' | 'get' | 'print',
+ Timeout :: timeout().
log(Name, Flag, Timeout) ->
send_system_msg(Name, {debug, {log, Flag}}, Timeout).
--spec trace(name(), boolean()) -> 'ok'.
+-spec trace(Name, Flag) -> 'ok' when
+ Name :: name(),
+ Flag :: boolean().
trace(Name, Flag) ->
send_system_msg(Name, {debug, {trace, Flag}}).
--spec trace(name(), boolean(), timeout()) -> 'ok'.
+-spec trace(Name, Flag, Timeout) -> 'ok' when
+ Name :: name(),
+ Flag :: boolean(),
+ Timeout :: timeout().
trace(Name, Flag, Timeout) ->
send_system_msg(Name, {debug, {trace, Flag}}, Timeout).
--type l2f_fname() :: string() | 'false'.
-
--spec log_to_file(name(), l2f_fname()) -> 'ok' | {'error','open_file'}.
+-spec log_to_file(Name, Flag) -> 'ok' | {'error','open_file'} when
+ Name :: name(),
+ Flag :: (FileName :: string()) | 'false'.
log_to_file(Name, FileName) ->
send_system_msg(Name, {debug, {log_to_file, FileName}}).
--spec log_to_file(name(), l2f_fname(), timeout()) -> 'ok' | {'error','open_file'}.
+-spec log_to_file(Name, Flag, Timeout) -> 'ok' | {'error','open_file'} when
+ Name :: name(),
+ Flag :: (FileName :: string()) | 'false',
+ Timeout :: timeout().
log_to_file(Name, FileName, Timeout) ->
send_system_msg(Name, {debug, {log_to_file, FileName}}, Timeout).
+-spec statistics(Name, Flag) -> 'ok' | {'ok', Statistics} when
+ Name :: name(),
+ Flag :: 'true' | 'false' | 'get',
+ Statistics :: [StatisticsTuple],
+ StatisticsTuple :: {'start_time', DateTime1}
+ | {'current_time', DateTime2}
+ | {'reductions', non_neg_integer()}
+ | {'messages_in', non_neg_integer()}
+ | {'messages_out', non_neg_integer()},
+ DateTime1 :: file:date_time(),
+ DateTime2 :: file:date_time().
statistics(Name, Flag) ->
send_system_msg(Name, {debug, {statistics, Flag}}).
+
+-spec statistics(Name, Flag, Timeout) -> 'ok' | {'ok', Statistics} when
+ Name :: name(),
+ Flag :: 'true' | 'false' | 'get',
+ Statistics :: [StatisticsTuple],
+ StatisticsTuple :: {'start_time', DateTime1}
+ | {'current_time', DateTime2}
+ | {'reductions', non_neg_integer()}
+ | {'messages_in', non_neg_integer()}
+ | {'messages_out', non_neg_integer()},
+ DateTime1 :: file:date_time(),
+ DateTime2 :: file:date_time(),
+ Timeout :: timeout().
statistics(Name, Flag, Timeout) ->
send_system_msg(Name, {debug, {statistics, Flag}}, Timeout).
--spec no_debug(name()) -> 'ok'.
+-spec no_debug(Name) -> 'ok' when
+ Name :: name().
no_debug(Name) -> send_system_msg(Name, {debug, no_debug}).
--spec no_debug(name(), timeout()) -> 'ok'.
+-spec no_debug(Name, Timeout) -> 'ok' when
+ Name :: name(),
+ Timeout :: timeout().
no_debug(Name, Timeout) -> send_system_msg(Name, {debug, no_debug}, Timeout).
+-spec install(Name, FuncSpec) -> Void when
+ Name :: name(),
+ FuncSpec :: {Func, FuncState},
+ Func :: dbg_fun(),
+ FuncState :: term(),
+ Void :: term().
install(Name, {Func, FuncState}) ->
send_system_msg(Name, {debug, {install, {Func, FuncState}}}).
+-spec install(Name, FuncSpec, Timeout) -> Void when
+ Name :: name(),
+ FuncSpec :: {Func, FuncState},
+ Func :: dbg_fun(),
+ FuncState :: term(),
+ Timeout :: timeout(),
+ Void :: term().
install(Name, {Func, FuncState}, Timeout) ->
send_system_msg(Name, {debug, {install, {Func, FuncState}}}, Timeout).
+-spec remove(Name, Func) -> Void when
+ Name :: name(),
+ Func :: dbg_fun(),
+ Void :: term().
remove(Name, Func) ->
send_system_msg(Name, {debug, {remove, Func}}).
+-spec remove(Name, Func, Timeout) -> Void when
+ Name :: name(),
+ Func :: dbg_fun(),
+ Timeout :: timeout(),
+ Void :: term().
remove(Name, Func, Timeout) ->
send_system_msg(Name, {debug, {remove, Func}}, Timeout).
@@ -150,6 +266,14 @@ mfa(Name, Req, Timeout) ->
%% The Module must export system_continue/3, system_terminate/4
%% and format_status/2 for status information.
%%-----------------------------------------------------------------
+-spec handle_system_msg(Msg, From, Parent, Module, Debug, Misc) -> Void when
+ Msg :: term(),
+ From :: {pid(), Tag :: _},
+ Parent :: pid(),
+ Module :: module(),
+ Debug :: [dbg_opt()],
+ Misc :: term(),
+ Void :: term().
handle_system_msg(Msg, From, Parent, Module, Debug, Misc) ->
handle_system_msg(running, Msg, From, Parent, Module, Debug, Misc, false).
@@ -176,6 +300,11 @@ handle_system_msg(SysState, Msg, From, Parent, Mod, Debug, Misc, Hib) ->
%% Func is a formatting function, called as Func(Device, Event).
%% Returns: [debug_opts()]
%%-----------------------------------------------------------------
+-spec handle_debug(Debug, FormFunc, Extra, Event) -> [dbg_opt()] when
+ Debug :: [dbg_opt()],
+ FormFunc :: dbg_fun(),
+ Extra :: term(),
+ Event :: system_event().
handle_debug([{trace, true} | T], FormFunc, State, Event) ->
print_event({Event, State, FormFunc}),
[{trace, true} | handle_debug(T, FormFunc, State, Event)];
@@ -341,24 +470,36 @@ trim(N, LogData) ->
%% Debug structure manipulating functions
%%-----------------------------------------------------------------
install_debug(Item, Data, Debug) ->
- case get_debug(Item, Debug, undefined) of
+ case get_debug2(Item, Debug, undefined) of
undefined -> [{Item, Data} | Debug];
_ -> Debug
end.
remove_debug(Item, Debug) -> lists:keydelete(Item, 1, Debug).
+
+-spec get_debug(Item, Debug, Default) -> term() when
+ Item :: 'log' | 'statistics',
+ Debug :: [dbg_opt()],
+ Default :: term().
get_debug(Item, Debug, Default) ->
+ get_debug2(Item, Debug, Default).
+
+%% Workaround: accepts more Item types than get_debug/3.
+get_debug2(Item, Debug, Default) ->
case lists:keysearch(Item, 1, Debug) of
{value, {Item, Data}} -> Data;
_ -> Default
end.
+-spec print_log(Debug) -> Void when
+ Debug :: [dbg_opt()],
+ Void :: term().
print_log(Debug) ->
{_N, Logs} = get_debug(log, Debug, {0, []}),
lists:foreach(fun print_event/1,
lists:reverse(Logs)).
close_log_file(Debug) ->
- case get_debug(log_to_file, Debug, []) of
+ case get_debug2(log_to_file, Debug, []) of
[] ->
Debug;
Fd ->
@@ -375,6 +516,15 @@ close_log_file(Debug) ->
%% system messages.
%% Returns: [debug_opts()]
%%-----------------------------------------------------------------
+
+-spec debug_options(Options) -> [dbg_opt()] when
+ Options :: [Opt],
+ Opt :: 'trace' | 'log' | 'statistics' | {'log_to_file', FileName}
+ | {'install', FuncSpec},
+ FileName :: file:name(),
+ FuncSpec :: {Func, FuncState},
+ Func :: dbg_fun(),
+ FuncState :: term().
debug_options(Options) ->
debug_options(Options, []).
debug_options([trace | T], Debug) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 12:34:45 +0000