aboutsummaryrefslogtreecommitdiffstats
path: root/lib/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'lib/kernel')
-rw-r--r--lib/kernel/doc/src/file.xml14
-rw-r--r--lib/kernel/doc/src/os.xml13
-rw-r--r--lib/kernel/doc/src/pg2.xml10
-rw-r--r--lib/kernel/src/file.erl24
-rw-r--r--lib/kernel/src/group.erl148
-rw-r--r--lib/kernel/src/hipe_unified_loader.erl17
-rw-r--r--lib/kernel/src/inet_config.erl19
-rw-r--r--lib/kernel/src/kernel.appup.src6
-rw-r--r--lib/kernel/src/os.erl20
-rw-r--r--lib/kernel/src/user_drv.erl131
-rw-r--r--lib/kernel/test/interactive_shell_SUITE.erl7
-rw-r--r--lib/kernel/test/pdict_SUITE.erl33
12 files changed, 264 insertions, 178 deletions
diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml
index dcb9640dcf..338d62e82b 100644
--- a/lib/kernel/doc/src/file.xml
+++ b/lib/kernel/doc/src/file.xml
@@ -1693,9 +1693,9 @@
<desc>
<p>Makes sure that any buffers kept by the operating system
(not by the Erlang runtime system) are written to disk. In
- many ways it's resembles fsync but it not requires to update
- some of file's metadata such as the access time. On
- some platforms, this function might have no effect.</p>
+ many ways it resembles fsync but it does not update
+ some of the file's metadata such as the access time. On
+ some platforms this function has no effect.</p>
<p>Applications that access databases or log files often write
a tiny data fragment (e.g., one line in a log file) and then
call fsync() immediately in order to ensure that the written
@@ -1703,11 +1703,11 @@
will always initiate two write operations: one for the newly
written data and another one in order to update the modification
time stored in the inode. If the modification time is not a part
- of the transaction concept fdatasync() can be used to avoid
+ of the transaction concept, fdatasync() can be used to avoid
unnecessary inode disk write operations.</p>
- <p>Available only in some POSIX systems. This call results in a
- call to fsync(), or has no effect, in systems not implementing
- the fdatasync syscall.</p>
+ <p>Available only in some POSIX systems, this call results in a
+ call to fsync(), or has no effect in systems not implementing
+ the fdatasync() syscall.</p>
</desc>
</func>
<func>
diff --git a/lib/kernel/doc/src/os.xml b/lib/kernel/doc/src/os.xml
index 2b57e75023..8b85f24455 100644
--- a/lib/kernel/doc/src/os.xml
+++ b/lib/kernel/doc/src/os.xml
@@ -100,6 +100,19 @@ DirOut = os:cmd("dir"), % on Win32 platform</code>
</desc>
</func>
<func>
+ <name name="getenv" arity="2"/>
+ <fsummary>Get the value of an environment variable</fsummary>
+ <desc>
+ <p>Returns the <c><anno>Value</anno></c> of the environment variable
+ <c><anno>VarName</anno></c>, or <c>DefaultValue</c> if the environment variable
+ is undefined.</p>
+ <p>If Unicode file name encoding is in effect (see the <seealso
+ marker="erts:erl#file_name_encoding">erl manual
+ page</seealso>), the strings (both <c><anno>VarName</anno></c> and
+ <c><anno>Value</anno></c>) may contain characters with codepoints > 255.</p>
+ </desc>
+ </func>
+ <func>
<name name="getpid" arity="0"/>
<fsummary>Return the process identifier of the emulator process</fsummary>
<desc>
diff --git a/lib/kernel/doc/src/pg2.xml b/lib/kernel/doc/src/pg2.xml
index 5eb63c1ef6..35cf85470a 100644
--- a/lib/kernel/doc/src/pg2.xml
+++ b/lib/kernel/doc/src/pg2.xml
@@ -34,11 +34,8 @@
<module>pg2</module>
<modulesummary>Distributed Named Process Groups</modulesummary>
<description>
- <p>This module implements process groups. The groups in this
- module differ from the groups in the module <c>pg</c> in several
- ways. In <c>pg</c>, each message is sent to all members in the
- group. In this module, each message may be sent to one, some, or
- all members.
+ <p>This module implements process groups. Each message may be sent
+ to one, some, or all members of the group.
</p>
<p>A group of processes can be accessed by a common name. For
example, if there is a group named <c>foobar</c>, there can be a
@@ -160,8 +157,7 @@
<section>
<title>See Also</title>
- <p><seealso marker="kernel_app">kernel(6)</seealso>,
- <seealso marker="stdlib:pg">pg(3)</seealso></p>
+ <p><seealso marker="kernel_app">kernel(6)</seealso></p>
</section>
</erlref>
diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl
index 3d6665a36a..b6b153ae56 100644
--- a/lib/kernel/src/file.erl
+++ b/lib/kernel/src/file.erl
@@ -445,21 +445,15 @@ open(Item, ModeList) when is_list(ModeList) ->
case lists:member(raw, ModeList) of
%% Raw file, use ?PRIM_FILE to handle this file
true ->
- %% check if raw file mode is disabled
- case catch application:get_env(kernel, raw_files) of
- {ok,false} ->
- open(Item, lists:delete(raw, ModeList));
- _ -> % undefined | {ok,true}
- Args = [file_name(Item) | ModeList],
- case check_args(Args) of
- ok ->
- [FileName | _] = Args,
- %% We rely on the returned Handle (in {ok, Handle})
- %% being a pid() or a #file_descriptor{}
- ?PRIM_FILE:open(FileName, ModeList);
- Error ->
- Error
- end
+ Args = [file_name(Item) | ModeList],
+ case check_args(Args) of
+ ok ->
+ [FileName | _] = Args,
+ %% We rely on the returned Handle (in {ok, Handle})
+ %% being a pid() or a #file_descriptor{}
+ ?PRIM_FILE:open(FileName, ModeList);
+ Error ->
+ Error
end;
false ->
case lists:member(ram, ModeList) of
diff --git a/lib/kernel/src/group.erl b/lib/kernel/src/group.erl
index b36dbf33dd..046885f885 100644
--- a/lib/kernel/src/group.erl
+++ b/lib/kernel/src/group.erl
@@ -111,8 +111,13 @@ start_shell1(Fun) ->
server_loop(Drv, Shell, Buf0) ->
receive
{io_request,From,ReplyAs,Req} when is_pid(From) ->
- Buf = io_request(Req, From, ReplyAs, Drv, Buf0),
- server_loop(Drv, Shell, Buf);
+ %% This io_request may cause a transition to a couple of
+ %% selective receive loops elsewhere in this module.
+ Buf = io_request(Req, From, ReplyAs, Drv, Buf0),
+ server_loop(Drv, Shell, Buf);
+ {reply,{{From,ReplyAs},Reply}} ->
+ io_reply(From, ReplyAs, Reply),
+ server_loop(Drv, Shell, Buf0);
{driver_id,ReplyTo} ->
ReplyTo ! {self(),driver_id,Drv},
server_loop(Drv, Shell, Buf0);
@@ -172,10 +177,13 @@ set_unicode_state(Drv,Bool) ->
io_request(Req, From, ReplyAs, Drv, Buf0) ->
- case io_request(Req, Drv, Buf0) of
+ case io_request(Req, Drv, {From,ReplyAs}, Buf0) of
{ok,Reply,Buf} ->
io_reply(From, ReplyAs, Reply),
Buf;
+ {noreply,Buf} ->
+ %% We expect a {reply,_} message from the Drv when request is done
+ Buf;
{error,Reply,Buf} ->
io_reply(From, ReplyAs, Reply),
Buf;
@@ -196,78 +204,85 @@ io_request(Req, From, ReplyAs, Drv, Buf0) ->
%% io_request({put_chars,unicode,Binary}, Drv, Buf) when is_binary(Binary) ->
%% send_drv(Drv, {put_chars,Binary}),
%% {ok,ok,Buf};
-io_request({put_chars,unicode,Chars}, Drv, Buf) ->
+%%
+%% These put requests have to be synchronous to the driver as otherwise
+%% there is no guarantee that the data has actually been printed.
+io_request({put_chars,unicode,Chars}, Drv, From, Buf) ->
case catch unicode:characters_to_binary(Chars,utf8) of
Binary when is_binary(Binary) ->
- send_drv(Drv, {put_chars, unicode, Binary}),
- {ok,ok,Buf};
+ send_drv(Drv, {put_chars_sync, unicode, Binary, {From,ok}}),
+ {noreply,Buf};
_ ->
{error,{error,{put_chars, unicode,Chars}},Buf}
end;
-io_request({put_chars,unicode,M,F,As}, Drv, Buf) ->
+io_request({put_chars,unicode,M,F,As}, Drv, From, Buf) ->
case catch apply(M, F, As) of
Binary when is_binary(Binary) ->
- send_drv(Drv, {put_chars, unicode,Binary}),
- {ok,ok,Buf};
+ send_drv(Drv, {put_chars_sync, unicode, Binary, {From,ok}}),
+ {noreply,Buf};
Chars ->
case catch unicode:characters_to_binary(Chars,utf8) of
B when is_binary(B) ->
- send_drv(Drv, {put_chars, unicode,B}),
- {ok,ok,Buf};
+ send_drv(Drv, {put_chars_sync, unicode, B, {From,ok}}),
+ {noreply,Buf};
_ ->
{error,{error,F},Buf}
end
end;
-io_request({put_chars,latin1,Binary}, Drv, Buf) when is_binary(Binary) ->
- send_drv(Drv, {put_chars, unicode,unicode:characters_to_binary(Binary,latin1)}),
- {ok,ok,Buf};
-io_request({put_chars,latin1,Chars}, Drv, Buf) ->
+io_request({put_chars,latin1,Binary}, Drv, From, Buf) when is_binary(Binary) ->
+ send_drv(Drv, {put_chars_sync, unicode,
+ unicode:characters_to_binary(Binary,latin1),
+ {From,ok}}),
+ {noreply,Buf};
+io_request({put_chars,latin1,Chars}, Drv, From, Buf) ->
case catch unicode:characters_to_binary(Chars,latin1) of
Binary when is_binary(Binary) ->
- send_drv(Drv, {put_chars, unicode,Binary}),
- {ok,ok,Buf};
+ send_drv(Drv, {put_chars_sync, unicode, Binary, {From,ok}}),
+ {noreply,Buf};
_ ->
{error,{error,{put_chars,latin1,Chars}},Buf}
end;
-io_request({put_chars,latin1,M,F,As}, Drv, Buf) ->
+io_request({put_chars,latin1,M,F,As}, Drv, From, Buf) ->
case catch apply(M, F, As) of
Binary when is_binary(Binary) ->
- send_drv(Drv, {put_chars, unicode,unicode:characters_to_binary(Binary,latin1)}),
- {ok,ok,Buf};
+ send_drv(Drv, {put_chars_sync, unicode,
+ unicode:characters_to_binary(Binary,latin1),
+ {From,ok}}),
+ {noreply,Buf};
Chars ->
case catch unicode:characters_to_binary(Chars,latin1) of
B when is_binary(B) ->
- send_drv(Drv, {put_chars, unicode,B}),
- {ok,ok,Buf};
+ send_drv(Drv, {put_chars_sync, unicode, B, {From,ok}}),
+ {noreply,Buf};
_ ->
{error,{error,F},Buf}
end
end;
-io_request({get_chars,Encoding,Prompt,N}, Drv, Buf) ->
+io_request({get_chars,Encoding,Prompt,N}, Drv, _From, Buf) ->
get_chars(Prompt, io_lib, collect_chars, N, Drv, Buf, Encoding);
-io_request({get_line,Encoding,Prompt}, Drv, Buf) ->
+io_request({get_line,Encoding,Prompt}, Drv, _From, Buf) ->
get_chars(Prompt, io_lib, collect_line, [], Drv, Buf, Encoding);
-io_request({get_until,Encoding, Prompt,M,F,As}, Drv, Buf) ->
+io_request({get_until,Encoding, Prompt,M,F,As}, Drv, _From, Buf) ->
get_chars(Prompt, io_lib, get_until, {M,F,As}, Drv, Buf, Encoding);
-io_request({get_password,_Encoding},Drv,Buf) ->
+io_request({get_password,_Encoding},Drv,_From,Buf) ->
get_password_chars(Drv, Buf);
-io_request({setopts,Opts}, Drv, Buf) when is_list(Opts) ->
+io_request({setopts,Opts}, Drv, _From, Buf) when is_list(Opts) ->
setopts(Opts, Drv, Buf);
-io_request(getopts, Drv, Buf) ->
+io_request(getopts, Drv, _From, Buf) ->
getopts(Drv, Buf);
-io_request({requests,Reqs}, Drv, Buf) ->
- io_requests(Reqs, {ok,ok,Buf}, Drv);
+io_request({requests,Reqs}, Drv, From, Buf) ->
+ io_requests(Reqs, {ok,ok,Buf}, From, Drv);
%% New in R12
-io_request({get_geometry,columns},Drv,Buf) ->
+io_request({get_geometry,columns},Drv,_From,Buf) ->
case get_tty_geometry(Drv) of
{W,_H} ->
{ok,W,Buf};
_ ->
{error,{error,enotsup},Buf}
end;
-io_request({get_geometry,rows},Drv,Buf) ->
+io_request({get_geometry,rows},Drv,_From,Buf) ->
case get_tty_geometry(Drv) of
{_W,H} ->
{ok,H,Buf};
@@ -276,38 +291,49 @@ io_request({get_geometry,rows},Drv,Buf) ->
end;
%% BC with pre-R13
-io_request({put_chars,Chars}, Drv, Buf) ->
- io_request({put_chars,latin1,Chars}, Drv, Buf);
-io_request({put_chars,M,F,As}, Drv, Buf) ->
- io_request({put_chars,latin1,M,F,As}, Drv, Buf);
-io_request({get_chars,Prompt,N}, Drv, Buf) ->
- io_request({get_chars,latin1,Prompt,N}, Drv, Buf);
-io_request({get_line,Prompt}, Drv, Buf) ->
- io_request({get_line,latin1,Prompt}, Drv, Buf);
-io_request({get_until, Prompt,M,F,As}, Drv, Buf) ->
- io_request({get_until,latin1, Prompt,M,F,As}, Drv, Buf);
-io_request(get_password,Drv,Buf) ->
- io_request({get_password,latin1},Drv,Buf);
-
-
-
-io_request(_, _Drv, Buf) ->
+io_request({put_chars,Chars}, Drv, From, Buf) ->
+ io_request({put_chars,latin1,Chars}, Drv, From, Buf);
+io_request({put_chars,M,F,As}, Drv, From, Buf) ->
+ io_request({put_chars,latin1,M,F,As}, Drv, From, Buf);
+io_request({get_chars,Prompt,N}, Drv, From, Buf) ->
+ io_request({get_chars,latin1,Prompt,N}, Drv, From, Buf);
+io_request({get_line,Prompt}, Drv, From, Buf) ->
+ io_request({get_line,latin1,Prompt}, Drv, From, Buf);
+io_request({get_until, Prompt,M,F,As}, Drv, From, Buf) ->
+ io_request({get_until,latin1, Prompt,M,F,As}, Drv, From, Buf);
+io_request(get_password,Drv,From,Buf) ->
+ io_request({get_password,latin1},Drv,From,Buf);
+
+
+
+io_request(_, _Drv, _From, Buf) ->
{error,{error,request},Buf}.
-%% Status = io_requests(RequestList, PrevStat, Drv)
-%% Process a list of output requests as long as the previous status is 'ok'.
-
-io_requests([R|Rs], {ok,ok,Buf}, Drv) ->
- io_requests(Rs, io_request(R, Drv, Buf), Drv);
-io_requests([_|_], Error, _Drv) ->
+%% Status = io_requests(RequestList, PrevStat, From, Drv)
+%% Process a list of output requests as long as
+%% the previous status is 'ok' or noreply.
+%%
+%% We use undefined as the From for all but the last request
+%% in order to discards acknowledgements from those requests.
+%%
+io_requests([R|Rs], {noreply,Buf}, From, Drv) ->
+ ReqFrom = if Rs =:= [] -> From; true -> undefined end,
+ io_requests(Rs, io_request(R, Drv, ReqFrom, Buf), From, Drv);
+io_requests([R|Rs], {ok,ok,Buf}, From, Drv) ->
+ ReqFrom = if Rs =:= [] -> From; true -> undefined end,
+ io_requests(Rs, io_request(R, Drv, ReqFrom, Buf), From, Drv);
+io_requests([_|_], Error, _From, _Drv) ->
Error;
-io_requests([], Stat, _) ->
+io_requests([], Stat, _From, _) ->
Stat.
%% io_reply(From, ReplyAs, Reply)
%% The function for sending i/o command acknowledgement.
%% The ACK contains the return value.
+io_reply(undefined, _ReplyAs, _Reply) ->
+ %% Ignore these replies as they are generated from io_requests/4.
+ ok;
io_reply(From, ReplyAs, Reply) ->
From ! {io_reply,ReplyAs,Reply},
ok.
@@ -619,6 +645,10 @@ more_data(What, Cont0, Drv, Ls, Encoding) ->
io_request(Req, From, ReplyAs, Drv, []), %WRONG!!!
send_drv_reqs(Drv, edlin:redraw_line(Cont)),
get_line1({more_chars,Cont,[]}, Drv, Ls, Encoding);
+ {reply,{{From,ReplyAs},Reply}} ->
+ %% We take care of replies from puts here as well
+ io_reply(From, ReplyAs, Reply),
+ more_data(What, Cont0, Drv, Ls, Encoding);
{'EXIT',Drv,interrupt} ->
interrupted;
{'EXIT',Drv,_} ->
@@ -641,6 +671,10 @@ get_line_echo_off1({Chars,[]}, Drv) ->
{io_request,From,ReplyAs,Req} when is_pid(From) ->
io_request(Req, From, ReplyAs, Drv, []),
get_line_echo_off1({Chars,[]}, Drv);
+ {reply,{{From,ReplyAs},Reply}} when From =/= undefined ->
+ %% We take care of replies from puts here as well
+ io_reply(From, ReplyAs, Reply),
+ get_line_echo_off1({Chars,[]},Drv);
{'EXIT',Drv,interrupt} ->
interrupted;
{'EXIT',Drv,_} ->
@@ -790,6 +824,10 @@ get_password1({Chars,[]}, Drv) ->
%% set to []. But do we expect anything but plain output?
get_password1({Chars, []}, Drv);
+ {reply,{{From,ReplyAs},Reply}} ->
+ %% We take care of replies from puts here as well
+ io_reply(From, ReplyAs, Reply),
+ get_password1({Chars, []},Drv);
{'EXIT',Drv,interrupt} ->
interrupted;
{'EXIT',Drv,_} ->
diff --git a/lib/kernel/src/hipe_unified_loader.erl b/lib/kernel/src/hipe_unified_loader.erl
index e5928c7b63..2d124d95b7 100644
--- a/lib/kernel/src/hipe_unified_loader.erl
+++ b/lib/kernel/src/hipe_unified_loader.erl
@@ -827,7 +827,6 @@ patch_to_emu_step1(Mod) ->
%% were added as the result of dynamic apply calls. We must
%% purge them too, but we have no explicit record of them.
%% Therefore invalidate all native addresses for the module.
- %% emu_make_stubs/1 will repair the ones for compiled static calls.
hipe_bifs:invalidate_funinfo_native_addresses(MFAs),
%% Find all call sites that call these MFAs. As a side-effect,
%% create native stubs for any MFAs that are referred.
@@ -841,7 +840,6 @@ patch_to_emu_step1(Mod) ->
%% Step 2 must occur after the new BEAM stub module is created.
patch_to_emu_step2(ReferencesToPatch) ->
- emu_make_stubs(ReferencesToPatch),
redirect(ReferencesToPatch).
-spec is_loaded(Module::atom()) -> boolean().
@@ -852,21 +850,6 @@ is_loaded(M) when is_atom(M) ->
catch _:_ -> false
end.
--ifdef(notdef).
-emu_make_stubs([{MFA,_Refs}|Rest]) ->
- make_stub(MFA),
- emu_make_stubs(Rest);
-emu_make_stubs([]) ->
- [].
-
-make_stub({_,_,A} = MFA) ->
- EmuAddress = hipe_bifs:get_emu_address(MFA),
- StubAddress = hipe_bifs:make_native_stub(EmuAddress, A),
- hipe_bifs:set_funinfo_native_address(MFA, StubAddress).
--else.
-emu_make_stubs(_) -> [].
--endif.
-
%%--------------------------------------------------------------------
%% Given a list of MFAs, tag them with their referred_from references.
%% The resulting {MFA,Refs} list is later passed to redirect/1, once
diff --git a/lib/kernel/src/inet_config.erl b/lib/kernel/src/inet_config.erl
index fdc244f959..187bfbdab0 100644
--- a/lib/kernel/src/inet_config.erl
+++ b/lib/kernel/src/inet_config.erl
@@ -113,13 +113,7 @@ init() ->
{unix,_} ->
%% The Etc variable enables us to run tests with other
%% configuration files than the normal ones
- Etc =
- case os:getenv("ERL_INET_ETC_DIR") of
- false ->
- ?DEFAULT_ETC;
- _EtcDir ->
- _EtcDir
- end,
+ Etc = os:getenv("ERL_INET_ETC_DIR", ?DEFAULT_ETC),
case inet_db:res_option(resolv_conf) of
undefined ->
inet_db:res_option(
@@ -152,11 +146,7 @@ erl_dist_mode() ->
do_load_resolv({unix,Type}, longnames) ->
%% The Etc variable enables us to run tests with other
%% configuration files than the normal ones
- Etc = case os:getenv("ERL_INET_ETC_DIR") of
- false -> ?DEFAULT_ETC;
- _EtcDir ->
- _EtcDir
- end,
+ Etc = os:getenv("ERL_INET_ETC_DIR", ?DEFAULT_ETC),
load_resolv(filename:join(Etc, ?DEFAULT_RESOLV), resolv),
case Type of
freebsd -> %% we may have to check version (2.2.2)
@@ -307,10 +297,7 @@ load_hosts(File,Os) ->
win32_load_from_registry(Type) ->
%% The TcpReg variable enables us to run tests with other registry configurations than
%% the normal ones
- TcpReg = case os:getenv("ERL_INET_ETC_DIR") of
- false -> [];
- _TReg -> _TReg
- end,
+ TcpReg = os:getenv("ERL_INET_ETC_DIR", ""),
{ok, Reg} = win32reg:open([read]),
{TcpIp,HFileKey} =
case Type of
diff --git a/lib/kernel/src/kernel.appup.src b/lib/kernel/src/kernel.appup.src
index f8f4cc1ec2..1bae762bed 100644
--- a/lib/kernel/src/kernel.appup.src
+++ b/lib/kernel/src/kernel.appup.src
@@ -17,9 +17,7 @@
%% %CopyrightEnd%
{"%VSN%",
%% Up from - max one major revision back
- [{<<"3\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}, %% R17
- {<<"2\\.16(\\.[0-9]+)*">>,[restart_new_emulator]}],%% R16
+ [{<<"3\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}], % OTP-17
%% Down to - max one major revision back
- [{<<"3\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}, %% R17
- {<<"2\\.16(\\.[0-9]+)*">>,[restart_new_emulator]}] %% R16
+ [{<<"3\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}] % OTP-17
}.
diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl
index 187fd0001b..7468a06f3c 100644
--- a/lib/kernel/src/os.erl
+++ b/lib/kernel/src/os.erl
@@ -26,7 +26,7 @@
%%% BIFs
--export([getenv/0, getenv/1, getpid/0, putenv/2, timestamp/0, unsetenv/1]).
+-export([getenv/0, getenv/1, getenv/2, getpid/0, putenv/2, timestamp/0, unsetenv/1]).
-spec getenv() -> [string()].
@@ -39,6 +39,19 @@ getenv() -> erlang:nif_error(undef).
getenv(_) ->
erlang:nif_error(undef).
+-spec getenv(VarName, DefaultValue) -> Value when
+ VarName :: string(),
+ DefaultValue :: string(),
+ Value :: string().
+
+getenv(VarName, DefaultValue) ->
+ case os:getenv(VarName) of
+ false ->
+ DefaultValue;
+ Value ->
+ Value
+ end.
+
-spec getpid() -> Value when
Value :: string().
@@ -85,10 +98,7 @@ version() ->
Name :: string(),
Filename :: string().
find_executable(Name) ->
- case os:getenv("PATH") of
- false -> find_executable(Name, []);
- Path -> find_executable(Name, Path)
- end.
+ find_executable(Name, os:getenv("PATH", "")).
-spec find_executable(Name, Path) -> Filename | 'false' when
Name :: string(),
diff --git a/lib/kernel/src/user_drv.erl b/lib/kernel/src/user_drv.erl
index a91c23539d..e6ce85c379 100644
--- a/lib/kernel/src/user_drv.erl
+++ b/lib/kernel/src/user_drv.erl
@@ -29,6 +29,7 @@
-define(OP_INSC,2).
-define(OP_DELC,3).
-define(OP_BEEP,4).
+-define(OP_PUTC_SYNC,5).
% Control op
-define(CTRL_OP_GET_WINSIZE,100).
-define(CTRL_OP_GET_UNICODE_STATE,101).
@@ -133,7 +134,7 @@ server1(Iport, Oport, Shell) ->
[erlang:system_info(system_version)]))},
Iport, Oport),
%% Enter the server loop.
- server_loop(Iport, Oport, Curr, User, Gr).
+ server_loop(Iport, Oport, Curr, User, Gr, queue:new()).
rem_sh_opts(Node) ->
[{expand_fun,fun(B)-> rpc:call(Node,edlin_expand,expand,[B]) end}].
@@ -158,42 +159,41 @@ start_user() ->
User
end.
-server_loop(Iport, Oport, User, Gr) ->
+server_loop(Iport, Oport, User, Gr, IOQueue) ->
Curr = gr_cur_pid(Gr),
put(current_group, Curr),
- server_loop(Iport, Oport, Curr, User, Gr).
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue).
-server_loop(Iport, Oport, Curr, User, Gr) ->
+server_loop(Iport, Oport, Curr, User, Gr, IOQueue) ->
receive
{Iport,{data,Bs}} ->
BsBin = list_to_binary(Bs),
Unicode = unicode:characters_to_list(BsBin,utf8),
- port_bytes(Unicode, Iport, Oport, Curr, User, Gr);
+ port_bytes(Unicode, Iport, Oport, Curr, User, Gr, IOQueue);
{Iport,eof} ->
Curr ! {self(),eof},
- server_loop(Iport, Oport, Curr, User, Gr);
- {User,Req} -> % never block from user!
- io_request(Req, Iport, Oport),
- server_loop(Iport, Oport, Curr, User, Gr);
- {Curr,tty_geometry} ->
- Curr ! {self(),tty_geometry,get_tty_geometry(Iport)},
- server_loop(Iport, Oport, Curr, User, Gr);
- {Curr,get_unicode_state} ->
- Curr ! {self(),get_unicode_state,get_unicode_state(Iport)},
- server_loop(Iport, Oport, Curr, User, Gr);
- {Curr,set_unicode_state, Bool} ->
- Curr ! {self(),set_unicode_state,set_unicode_state(Iport,Bool)},
- server_loop(Iport, Oport, Curr, User, Gr);
- {Curr,Req} ->
- io_request(Req, Iport, Oport),
- server_loop(Iport, Oport, Curr, User, Gr);
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue);
+ Req when element(1,Req) =:= User orelse element(1,Req) =:= Curr,
+ tuple_size(Req) =:= 2 orelse tuple_size(Req) =:= 3 ->
+ %% We match {User|Curr,_}|{User|Curr,_,_}
+ NewQ = handle_req(Req, Iport, Oport, IOQueue),
+ server_loop(Iport, Oport, Curr, User, Gr, NewQ);
+ {Oport,ok} ->
+ %% We get this ok from the port, in io_request we store
+ %% info about where to send reply at head of queue
+ {{value,{Origin,Reply}},ReplyQ} = queue:out(IOQueue),
+ Origin ! {reply,Reply},
+ NewQ = handle_req(next, Iport, Oport, ReplyQ),
+ server_loop(Iport, Oport, Curr, User, Gr, NewQ);
{'EXIT',Iport,_R} ->
- server_loop(Iport, Oport, Curr, User, Gr);
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue);
{'EXIT',Oport,_R} ->
- server_loop(Iport, Oport, Curr, User, Gr);
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue);
+ {'EXIT',User,shutdown} -> % force data to port
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue);
{'EXIT',User,_R} -> % keep 'user' alive
NewU = start_user(),
- server_loop(Iport, Oport, Curr, NewU, gr_set_num(Gr, 1, NewU, {}));
+ server_loop(Iport, Oport, Curr, NewU, gr_set_num(Gr, 1, NewU, {}), IOQueue);
{'EXIT',Pid,R} -> % shell and group leader exit
case gr_cur_pid(Gr) of
Pid when R =/= die ,
@@ -213,18 +213,51 @@ server_loop(Iport, Oport, Curr, User, Gr) ->
{ok,Gr2} = gr_set_cur(gr_set_num(Gr1, Ix, Pid1,
{shell,start,Params}), Ix),
put(current_group, Pid1),
- server_loop(Iport, Oport, Pid1, User, Gr2);
+ server_loop(Iport, Oport, Pid1, User, Gr2, IOQueue);
_ -> % remote shell
io_requests([{put_chars,unicode,"(^G to start new job) ***\n"}],
Iport, Oport),
- server_loop(Iport, Oport, Curr, User, Gr1)
+ server_loop(Iport, Oport, Curr, User, Gr1, IOQueue)
end;
_ -> % not current, just remove it
- server_loop(Iport, Oport, Curr, User, gr_del_pid(Gr, Pid))
+ server_loop(Iport, Oport, Curr, User, gr_del_pid(Gr, Pid), IOQueue)
end;
_X ->
%% Ignore unknown messages.
- server_loop(Iport, Oport, Curr, User, Gr)
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue)
+ end.
+
+%% We always handle geometry and unicode requests
+handle_req({Curr,tty_geometry},Iport,_Oport,IOQueue) ->
+ Curr ! {self(),tty_geometry,get_tty_geometry(Iport)},
+ IOQueue;
+handle_req({Curr,get_unicode_state},Iport,_Oport,IOQueue) ->
+ Curr ! {self(),get_unicode_state,get_unicode_state(Iport)},
+ IOQueue;
+handle_req({Curr,set_unicode_state, Bool},Iport,_Oport,IOQueue) ->
+ Curr ! {self(),set_unicode_state,set_unicode_state(Iport,Bool)},
+ IOQueue;
+handle_req(next,Iport,Oport,IOQueue) ->
+ case queue:out(IOQueue) of
+ {{value,Next},ExecQ} ->
+ NewQ = handle_req(Next,Iport,Oport,queue:new()),
+ queue:join(NewQ,ExecQ);
+ {empty,_} ->
+ IOQueue
+ end;
+handle_req(Msg,Iport,Oport,IOQueue) ->
+ case queue:peek(IOQueue) of
+ empty ->
+ {Origin,Req} = Msg,
+ case io_request(Req, Iport, Oport) of
+ ok -> IOQueue;
+ Reply ->
+ %% Push reply info to front of queue
+ queue:in_r({Origin,Reply},IOQueue)
+ end;
+ _Else ->
+ %% All requests are queued when we have outstanding sync put_chars
+ queue:in(Msg,IOQueue)
end.
%% port_bytes(Bytes, InPort, OutPort, CurrentProcess, UserProcess, Group)
@@ -232,34 +265,34 @@ server_loop(Iport, Oport, Curr, User, Gr) ->
%% either escape to switch_loop or restart the shell. Otherwise send
%% the bytes to Curr.
-port_bytes([$\^G|_Bs], Iport, Oport, _Curr, User, Gr) ->
- handle_escape(Iport, Oport, User, Gr);
+port_bytes([$\^G|_Bs], Iport, Oport, _Curr, User, Gr, IOQueue) ->
+ handle_escape(Iport, Oport, User, Gr, IOQueue);
-port_bytes([$\^C|_Bs], Iport, Oport, Curr, User, Gr) ->
- interrupt_shell(Iport, Oport, Curr, User, Gr);
+port_bytes([$\^C|_Bs], Iport, Oport, Curr, User, Gr, IOQueue) ->
+ interrupt_shell(Iport, Oport, Curr, User, Gr, IOQueue);
-port_bytes([B], Iport, Oport, Curr, User, Gr) ->
+port_bytes([B], Iport, Oport, Curr, User, Gr, IOQueue) ->
Curr ! {self(),{data,[B]}},
- server_loop(Iport, Oport, Curr, User, Gr);
-port_bytes(Bs, Iport, Oport, Curr, User, Gr) ->
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue);
+port_bytes(Bs, Iport, Oport, Curr, User, Gr, IOQueue) ->
case member($\^G, Bs) of
true ->
- handle_escape(Iport, Oport, User, Gr);
+ handle_escape(Iport, Oport, User, Gr, IOQueue);
false ->
Curr ! {self(),{data,Bs}},
- server_loop(Iport, Oport, Curr, User, Gr)
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue)
end.
-interrupt_shell(Iport, Oport, Curr, User, Gr) ->
+interrupt_shell(Iport, Oport, Curr, User, Gr, IOQueue) ->
case gr_get_info(Gr, Curr) of
undefined ->
ok; % unknown
_ ->
exit(Curr, interrupt)
end,
- server_loop(Iport, Oport, Curr, User, Gr).
+ server_loop(Iport, Oport, Curr, User, Gr, IOQueue).
-handle_escape(Iport, Oport, User, Gr) ->
+handle_escape(Iport, Oport, User, Gr, IOQueue) ->
case application:get_env(stdlib, shell_esc) of
{ok,abort} ->
Pid = gr_cur_pid(Gr),
@@ -278,11 +311,11 @@ handle_escape(Iport, Oport, User, Gr) ->
Pid1 = group:start(self(), {shell,start,[]}),
io_request({put_chars,unicode,"\n"}, Iport, Oport),
server_loop(Iport, Oport, User,
- gr_add_cur(Gr1, Pid1, {shell,start,[]}));
+ gr_add_cur(Gr1, Pid1, {shell,start,[]}), IOQueue);
_ -> % {ok,jcl} | undefined
io_request({put_chars,unicode,"\nUser switch command\n"}, Iport, Oport),
- server_loop(Iport, Oport, User, switch_loop(Iport, Oport, Gr))
+ server_loop(Iport, Oport, User, switch_loop(Iport, Oport, Gr), IOQueue)
end.
switch_loop(Iport, Oport, Gr) ->
@@ -492,9 +525,12 @@ set_unicode_state(Iport, Bool) ->
io_request(Request, Iport, Oport) ->
try io_command(Request) of
- Command ->
+ {command,_} = Command ->
Oport ! {self(),Command},
- ok
+ ok;
+ {Command,Reply} ->
+ Oport ! {self(),Command},
+ Reply
catch
{requests,Rs} ->
io_requests(Rs, Iport, Oport);
@@ -511,6 +547,13 @@ io_requests([], _Iport, _Oport) ->
put_int16(N, Tail) ->
[(N bsr 8)band 255,N band 255|Tail].
+%% When a put_chars_sync command is used, user_drv guarantees that
+%% the bytes have been put in the buffer of the port before an acknowledgement
+%% is sent back to the process sending the request. This command was added in
+%% OTP 18 to make sure that data sent from io:format is actually printed
+%% to the console before the vm stops when calling erlang:halt(integer()).
+io_command({put_chars_sync, unicode,Cs,Reply}) ->
+ {{command,[?OP_PUTC_SYNC|unicode:characters_to_binary(Cs,utf8)]},Reply};
io_command({put_chars, unicode,Cs}) ->
{command,[?OP_PUTC|unicode:characters_to_binary(Cs,utf8)]};
io_command({move_rel,N}) ->
diff --git a/lib/kernel/test/interactive_shell_SUITE.erl b/lib/kernel/test/interactive_shell_SUITE.erl
index 7f6024f642..3fb7c68886 100644
--- a/lib/kernel/test/interactive_shell_SUITE.erl
+++ b/lib/kernel/test/interactive_shell_SUITE.erl
@@ -48,12 +48,7 @@ groups() ->
[].
init_per_suite(Config) ->
- Term = case os:getenv("TERM") of
- List when is_list(List) ->
- List;
- _ ->
- "dumb"
- end,
+ Term = os:getenv("TERM", "dumb"),
os:putenv("TERM","vt100"),
DefShell = get_default_shell(),
[{default_shell,DefShell},{term,Term}|Config].
diff --git a/lib/kernel/test/pdict_SUITE.erl b/lib/kernel/test/pdict_SUITE.erl
index 98cff0222e..4b60beb9dc 100644
--- a/lib/kernel/test/pdict_SUITE.erl
+++ b/lib/kernel/test/pdict_SUITE.erl
@@ -31,7 +31,7 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
- simple/1, complicated/1, heavy/1, info/1]).
+ simple/1, complicated/1, heavy/1, simple_all_keys/1, info/1]).
-export([init_per_testcase/2, end_per_testcase/2]).
-export([other_process/2]).
@@ -46,7 +46,7 @@ end_per_testcase(_Case, Config) ->
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [simple, complicated, heavy, info].
+ [simple, complicated, heavy, simple_all_keys, info].
groups() ->
[].
@@ -70,6 +70,7 @@ simple(suite) ->
[];
simple(Config) when is_list(Config) ->
XX = get(),
+ ok = match_keys(XX),
erase(),
L = [a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,
q,r,s,t,u,v,x,y,z,'A','B','C','D'],
@@ -105,6 +106,7 @@ simple(Config) when is_list(Config) ->
complicated(Config) when is_list(Config) ->
Previous = get(),
+ ok = match_keys(Previous),
Previous = erase(),
N = case ?t:is_debug() of
false -> 500000;
@@ -113,8 +115,10 @@ complicated(Config) when is_list(Config) ->
comp_1(N),
comp_2(N),
N = comp_3(lists:sort(get()), 1),
+ ok = match_keys(get()),
comp_4(get()),
[] = get(),
+ [] = get_keys(),
[put(Key, Value) || {Key,Value} <- Previous],
ok.
@@ -160,6 +164,26 @@ heavy(Config) when is_list(Config) ->
[put(Key, Value) || {Key,Value} <- XX],
ok.
+simple_all_keys(Config) when is_list(Config) ->
+ erase(),
+ ok = simple_all_keys_add_loop(1000),
+ [] = get_keys(),
+ [] = get(),
+ ok.
+
+simple_all_keys_add_loop(0) ->
+ simple_all_keys_del_loop(erlang:get_keys());
+simple_all_keys_add_loop(N) ->
+ put(gen_key(N),value),
+ ok = match_keys(get()),
+ simple_all_keys_add_loop(N-1).
+
+simple_all_keys_del_loop([]) -> ok;
+simple_all_keys_del_loop([K|Ks]) ->
+ value = erase(K),
+ ok = match_keys(get()),
+ simple_all_keys_del_loop(Ks).
+
info(doc) ->
["Tests process_info(Pid, dictionary)"];
info(suite) ->
@@ -339,3 +363,8 @@ m(A,B,Module,Line) ->
[A,B,Module,Line]),
exit({no_match,{A,B},Module,Line})
end.
+
+match_keys(All) ->
+ Ks = lists:sort([K||{K,_}<-All]),
+ Ks = lists:sort(erlang:get_keys()),
+ ok.
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 04:10:47 +0000