aboutsummaryrefslogtreecommitdiffstats
path: root/lib/kernel/test/file_SUITE.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/kernel/test/file_SUITE.erl')
-rw-r--r--lib/kernel/test/file_SUITE.erl220
1 files changed, 189 insertions, 31 deletions
diff --git a/lib/kernel/test/file_SUITE.erl b/lib/kernel/test/file_SUITE.erl
index 119e1f24bb..0cb8087a76 100644
--- a/lib/kernel/test/file_SUITE.erl
+++ b/lib/kernel/test/file_SUITE.erl
@@ -39,6 +39,8 @@
-define(FILE_FIN_PER_TESTCASE(Config), Config).
-endif.
+-define(PRIM_FILE, prim_file).
+
-module(?FILE_SUITE).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
@@ -97,6 +99,12 @@
-export([unicode_mode/1]).
+-export([volume_relative_paths/1]).
+
+-export([tiny_writes/1, tiny_writes_delayed/1,
+ large_writes/1, large_writes_delayed/1,
+ tiny_reads/1, tiny_reads_ahead/1]).
+
%% Debug exports
-export([create_file_slow/2, create_file/2, create_bin/2]).
-export([verify_file/2, verify_bin/3]).
@@ -107,6 +115,8 @@
-export([disc_free/1, memsize/0]).
-include_lib("common_test/include/ct.hrl").
+-include_lib("common_test/include/ct_event.hrl").
+
-include_lib("kernel/include/file.hrl").
-define(THROW_ERROR(RES), throw({fail, ?LINE, RES})).
@@ -118,13 +128,13 @@ suite() ->
all() ->
[unicode, altname, read_write_file, {group, dirs},
- {group, files}, delete, rename, names, {group, errors},
- {group, compression}, {group, links}, copy,
+ {group, files}, delete, rename, names, volume_relative_paths,
+ {group, errors}, {group, compression}, {group, links}, copy,
delayed_write, read_ahead, segment_read, segment_write,
ipread, pid2name, interleaved_read_write, otp_5814, otp_10852,
large_file, large_write, read_line_1, read_line_2, read_line_3,
read_line_4, standard_io, old_io_protocol,
- unicode_mode
+ unicode_mode, {group, bench}
].
groups() ->
@@ -154,11 +164,19 @@ groups() ->
write_compressed, compress_errors, catenated_gzips,
compress_async_crash]},
{links, [],
- [make_link, read_link_info_for_non_link, symlinks]}].
+ [make_link, read_link_info_for_non_link, symlinks]},
+ {bench, [],
+ [tiny_writes, tiny_writes_delayed,
+ large_writes, large_writes_delayed,
+ tiny_reads, tiny_reads_ahead]}].
init_per_group(_GroupName, Config) ->
Config.
+end_per_group(bench, Config) ->
+ ScratchDir = proplists:get_value(priv_dir, Config),
+ file:delete(filename:join(ScratchDir, "benchmark_scratch_file")),
+ Config;
end_per_group(_GroupName, Config) ->
Config.
@@ -473,7 +491,7 @@ um_check_unicode(_Utf8Bin, {ok, _ListOrBin}, _, _UTF8_) ->
um_filename(Bin, Dir, Options) when is_binary(Bin) ->
um_filename(binary_to_list(Bin), Dir, Options);
um_filename(Str = [_|_], Dir, Options) ->
- Name = hd(string:tokens(Str, ":")),
+ Name = hd(string:lexemes(Str, ":")),
Enc = atom_to_list(proplists:get_value(encoding, Options, latin1)),
File = case lists:member(binary, Options) of
true ->
@@ -638,6 +656,10 @@ cur_dir_0(Config) when is_list(Config) ->
{ok,NewDirFiles} = ?FILE_MODULE:list_dir("."),
true = lists:member(UncommonName,NewDirFiles),
+ %% Ensure that we get the same result with a trailing slash; the
+ %% APIs used on Windows will choke on them if passed directly.
+ {ok,NewDirFiles} = ?FILE_MODULE:list_dir("./"),
+
%% Delete the directory and return to the old current directory
%% and check that the created file isn't there (too!)
expect({error, einval}, {error, eacces},
@@ -690,10 +712,15 @@ win_cur_dir_1(_Config) ->
%% Get the drive letter from the current directory,
%% and try to get current directory for that drive.
- [Drive,$:|_] = BaseDir,
- {ok,BaseDir} = ?FILE_MODULE:get_cwd([Drive,$:]),
+ [CurDrive,$:|_] = BaseDir,
+ {ok,BaseDir} = ?FILE_MODULE:get_cwd([CurDrive,$:]),
io:format("BaseDir = ~s\n", [BaseDir]),
+ %% We should error out on non-existent drives. Any reasonable system will
+ %% have at least one.
+ CurDirs = [?FILE_MODULE:get_cwd([Drive,$:]) || Drive <- lists:seq($A, $Z)],
+ lists:member({error,eaccess}, CurDirs),
+
%% Unfortunately, there is no way to move away from the
%% current drive as we can't use the "subst" command from
%% a SSH connection. We can't test any more.
@@ -831,7 +858,7 @@ no_untranslatable_names() ->
end.
start_node(Name, Args) ->
- [_,Host] = string:tokens(atom_to_list(node()), "@"),
+ [_,Host] = string:lexemes(atom_to_list(node()), "@"),
ct:log("Trying to start ~w@~s~n", [Name,Host]),
case test_server:start_node(Name, peer, [{args,Args}]) of
{error,Reason} ->
@@ -1019,6 +1046,23 @@ close(Config) when is_list(Config) ->
Val = ?FILE_MODULE:close(Fd1),
io:format("Second close gave: ~p",[Val]),
+ %% All operations on a closed raw file should EINVAL, even if they're not
+ %% supported on the current platform.
+ {ok,Fd2} = ?FILE_MODULE:open(Name, [read, write, raw]),
+ ok = ?FILE_MODULE:close(Fd2),
+
+ {error, einval} = ?FILE_MODULE:advise(Fd2, 5, 5, normal),
+ {error, einval} = ?FILE_MODULE:allocate(Fd2, 5, 5),
+ {error, einval} = ?FILE_MODULE:close(Fd2),
+ {error, einval} = ?FILE_MODULE:datasync(Fd2),
+ {error, einval} = ?FILE_MODULE:position(Fd2, 5),
+ {error, einval} = ?FILE_MODULE:pread(Fd2, 5, 1),
+ {error, einval} = ?FILE_MODULE:pwrite(Fd2, 5, "einval please"),
+ {error, einval} = ?FILE_MODULE:read(Fd2, 1),
+ {error, einval} = ?FILE_MODULE:sync(Fd2),
+ {error, einval} = ?FILE_MODULE:truncate(Fd2),
+ {error, einval} = ?FILE_MODULE:write(Fd2, "einval please"),
+
[] = flush(),
ok.
@@ -1132,8 +1176,8 @@ pread_write_test(File, Data) ->
end,
I = Size + 17,
ok = ?FILE_MODULE:pwrite(File, 0, Data),
- Res = ?FILE_MODULE:pread(File, 0, I),
- {ok, Data} = Res,
+ {ok, Data} = ?FILE_MODULE:pread(File, 0, I),
+ {ok, [Data]} = ?FILE_MODULE:pread(File, [{0, I}]),
eof = ?FILE_MODULE:pread(File, I, 1),
ok = ?FILE_MODULE:pwrite(File, [{0, Data}, {I, Data}]),
{ok, [Data, eof, Data]} =
@@ -2044,13 +2088,22 @@ names(Config) when is_list(Config) ->
ok = ?FILE_MODULE:close(Fd2),
{ok,Fd3} = ?FILE_MODULE:open(Name3,read),
ok = ?FILE_MODULE:close(Fd3),
+
+ %% Now try the same on raw files.
+ {ok,Fd4} = ?FILE_MODULE:open(Name2, [read, raw]),
+ ok = ?FILE_MODULE:close(Fd4),
+ {ok,Fd4f} = ?FILE_MODULE:open(lists:flatten(Name2), [read, raw]),
+ ok = ?FILE_MODULE:close(Fd4f),
+ {ok,Fd5} = ?FILE_MODULE:open(Name3, [read, raw]),
+ ok = ?FILE_MODULE:close(Fd5),
+
case length(Name1) > 255 of
true ->
io:format("Path too long for an atom:\n\n~p\n", [Name1]);
false ->
Name4 = list_to_atom(Name1),
- {ok,Fd4} = ?FILE_MODULE:open(Name4,read),
- ok = ?FILE_MODULE:close(Fd4)
+ {ok,Fd6} = ?FILE_MODULE:open(Name4,read),
+ ok = ?FILE_MODULE:close(Fd6)
end,
%% Try some path names
@@ -2074,6 +2127,22 @@ names(Config) when is_list(Config) ->
[] = flush(),
ok.
+volume_relative_paths(Config) when is_list(Config) ->
+ case os:type() of
+ {win32, _} ->
+ {ok, [Drive, $: | _]} = file:get_cwd(),
+ %% Relative to current device root.
+ {ok, RootInfo} = file:read_file_info([Drive, $:, $/]),
+ {ok, RootInfo} = file:read_file_info("/"),
+ %% Relative to current device directory.
+ {ok, DirContents} = file:list_dir([Drive, $:]),
+ {ok, DirContents} = file:list_dir("."),
+ [] = flush(),
+ ok;
+ _ ->
+ {skip, "This test is Windows-specific."}
+ end.
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -2641,8 +2710,8 @@ altname(Config) when is_list(Config) ->
{skipped, "Altname not supported on this platform"};
{ok, "LONGAL~1"} ->
{ok, "A_FILE~1"} = ?FILE_MODULE:altname(Name),
- {ok, "C:/"} = ?FILE_MODULE:altname("C:/"),
- {ok, "C:\\"} = ?FILE_MODULE:altname("C:\\"),
+ {ok, "c:/"} = ?FILE_MODULE:altname("C:/"),
+ {ok, "c:/"} = ?FILE_MODULE:altname("C:\\"),
{error,enoent} = ?FILE_MODULE:altname(NonexName),
{ok, "short"} = ?FILE_MODULE:altname(ShortName),
ok
@@ -2923,20 +2992,22 @@ delayed_write(Config) when is_list(Config) ->
%%
%% Test caching and normal close of non-raw file
{ok, Fd1} =
- ?FILE_MODULE:open(File, [write, {delayed_write, Size+1, 2000}]),
+ ?FILE_MODULE:open(File, [write, {delayed_write, Size+1, 400}]),
ok = ?FILE_MODULE:write(Fd1, Data1),
- timer:sleep(1000), % Just in case the file system is slow
+ %% Wait for a reasonable amount of time to check whether the write was
+ %% practically instantaneous or actually delayed.
+ timer:sleep(100),
{ok, Fd2} = ?FILE_MODULE:open(File, [read]),
eof = ?FILE_MODULE:read(Fd2, 1),
ok = ?FILE_MODULE:write(Fd1, Data1), % Data flush on size
- timer:sleep(1000), % Just in case the file system is slow
+ timer:sleep(100),
{ok, Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 2*Size+1),
ok = ?FILE_MODULE:write(Fd1, Data1),
- timer:sleep(3000), % Wait until data flush on timeout
+ timer:sleep(500), % Wait until data flush on timeout
{ok, Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 3*Size+1),
ok = ?FILE_MODULE:write(Fd1, Data1),
ok = ?FILE_MODULE:close(Fd1), % Data flush on close
- timer:sleep(1000), % Just in case the file system is slow
+ timer:sleep(100),
{ok, Data1Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 4*Size+1),
ok = ?FILE_MODULE:close(Fd2),
%%
@@ -2970,7 +3041,7 @@ delayed_write(Config) when is_list(Config) ->
{'DOWN', Mref1, _, _, _} = Down1a ->
ct:fail(Down1a)
end,
- timer:sleep(1000), % Just in case the file system is slow
+ timer:sleep(100), % Just in case the file system is slow
{ok, Fd3} = ?FILE_MODULE:open(File, [read]),
eof = ?FILE_MODULE:read(Fd3, 1),
Child1 ! {Parent, continue, normal},
@@ -2980,7 +3051,7 @@ delayed_write(Config) when is_list(Config) ->
{'DOWN', Mref1, _, _, _} = Down1b ->
ct:fail(Down1b)
end,
- timer:sleep(1000), % Just in case the file system is slow
+ timer:sleep(100), % Just in case the file system is slow
{ok, Data1} = ?FILE_MODULE:pread(Fd3, bof, Size+1),
ok = ?FILE_MODULE:close(Fd3),
%%
@@ -2993,7 +3064,7 @@ delayed_write(Config) when is_list(Config) ->
{'DOWN', Mref2, _, _, _} = Down2a ->
ct:fail(Down2a)
end,
- timer:sleep(1000), % Just in case the file system is slow
+ timer:sleep(100), % Just in case the file system is slow
{ok, Fd4} = ?FILE_MODULE:open(File, [read]),
eof = ?FILE_MODULE:read(Fd4, 1),
Child2 ! {Parent, continue, kill},
@@ -3003,7 +3074,7 @@ delayed_write(Config) when is_list(Config) ->
{'DOWN', Mref2, _, _, _} = Down2b ->
ct:fail(Down2b)
end,
- timer:sleep(1000), % Just in case the file system is slow
+ timer:sleep(100), % Just in case the file system is slow
eof = ?FILE_MODULE:pread(Fd4, bof, 1),
ok = ?FILE_MODULE:close(Fd4),
%%
@@ -3095,6 +3166,16 @@ read_ahead(Config) when is_list(Config) ->
Data1Data2Data3 = Data1++Data2++Data3,
{ok, Data1Data2Data3} = ?FILE_MODULE:read(Fd5, 3*Size+1),
ok = ?FILE_MODULE:close(Fd5),
+
+ %% Ensure that a read that draws from both the buffer and the file won't
+ %% return anything wonky.
+ SplitData = << <<(I rem 256)>> || I <- lists:seq(1, 1024) >>,
+ file:write_file(File, SplitData),
+ {ok, Fd6} = ?FILE_MODULE:open(File, [raw, read, binary, {read_ahead, 256}]),
+ {ok, <<1>>} = file:read(Fd6, 1),
+ <<1, Shifted:512/binary, _Rest/binary>> = SplitData,
+ {ok, Shifted} = file:read(Fd6, 512),
+
%%
[] = flush(),
ok.
@@ -3699,6 +3780,83 @@ do_large_write(Name) ->
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Benchmarks
+%%
+%% Note that we only measure the time it takes to run the isolated file
+%% operations and that the actual test runtime can differ significantly,
+%% especially on the write side as the files need to be truncated before
+%% writing.
+
+large_writes(Config) when is_list(Config) ->
+ Modes = [raw, binary],
+ OpCount = 4096,
+ Data = <<0:(64 bsl 10)/unit:8>>,
+ run_write_benchmark(Config, Modes, OpCount, Data).
+
+large_writes_delayed(Config) when is_list(Config) ->
+ %% Each write is exactly as large as the delay buffer, causing the writes
+ %% to pass through each time, giving us a decent idea of how much overhead
+ %% delayed_write adds.
+ Modes = [raw, binary, {delayed_write, 64 bsl 10, 2000}],
+ OpCount = 4096,
+ Data = <<0:(64 bsl 10)/unit:8>>,
+ run_write_benchmark(Config, Modes, OpCount, Data).
+
+tiny_writes(Config) when is_list(Config) ->
+ Modes = [raw, binary],
+ OpCount = 512 bsl 10,
+ Data = <<0>>,
+ run_write_benchmark(Config, Modes, OpCount, Data).
+
+tiny_writes_delayed(Config) when is_list(Config) ->
+ Modes = [raw, binary, {delayed_write, 512 bsl 10, 2000}],
+ OpCount = 512 bsl 10,
+ Data = <<0>>,
+ run_write_benchmark(Config, Modes, OpCount, Data).
+
+%% The read benchmarks assume that "benchmark_scratch_file" has been filled by
+%% the write benchmarks.
+
+tiny_reads(Config) when is_list(Config) ->
+ Modes = [raw, binary],
+ OpCount = 512 bsl 10,
+ run_read_benchmark(Config, Modes, OpCount, 1).
+
+tiny_reads_ahead(Config) when is_list(Config) ->
+ Modes = [raw, binary, {read_ahead, 512 bsl 10}],
+ OpCount = 512 bsl 10,
+ run_read_benchmark(Config, Modes, OpCount, 1).
+
+run_write_benchmark(Config, Modes, OpCount, Data) ->
+ run_benchmark(Config, [write | Modes], OpCount, fun file:write/2, Data).
+
+run_read_benchmark(Config, Modes, OpCount, OpSize) ->
+ run_benchmark(Config, [read | Modes], OpCount, fun file:read/2, OpSize).
+
+run_benchmark(Config, Modes, OpCount, Fun, Arg) ->
+ ScratchDir = proplists:get_value(priv_dir, Config),
+ Path = filename:join(ScratchDir, "benchmark_scratch_file"),
+ {ok, Fd} = file:open(Path, Modes),
+ submit_throughput_results(Fun, [Fd, Arg], OpCount).
+
+submit_throughput_results(Fun, Args, Times) ->
+ MSecs = measure_repeated_file_op(Fun, Args, Times, millisecond),
+ IOPS = trunc(Times * (1000 / MSecs)),
+ ct_event:notify(#event{ name = benchmark_data, data = [{value,IOPS}] }),
+ {comment, io_lib:format("~p IOPS, ~p ms", [IOPS, trunc(MSecs)])}.
+
+measure_repeated_file_op(Fun, Args, Times, Unit) ->
+ Start = os:perf_counter(Unit),
+ repeated_apply(Fun, Args, Times),
+ os:perf_counter(Unit) - Start.
+
+repeated_apply(_F, _Args, Times) when Times =< 0 ->
+ ok;
+repeated_apply(F, Args, Times) ->
+ erlang:apply(F, Args),
+ repeated_apply(F, Args, Times - 1).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
response_analysis(Module, Function, Arguments) ->
@@ -3934,7 +4092,7 @@ read_line_create_files(TestData) ->
read_line_remove_files(TestData) ->
[ file:delete(File) || {_Function,File,_,_} <- TestData ].
-%% read_line with prim_file.
+%% read_line with ?PRIM_FILE.
read_line_1(Config) when is_list(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
All = read_line_testdata(PrivDir),
@@ -4103,9 +4261,9 @@ read_line_create7(Filename) ->
file:close(F).
read_line_all(Filename) ->
- {ok,F} = prim_file:open(Filename,[read,binary]),
+ {ok,F} = ?PRIM_FILE:open(Filename,[read,binary]),
X=read_rl_lines(F),
- prim_file:close(F),
+ ?PRIM_FILE:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
@@ -4138,7 +4296,7 @@ read_line_all4(Filename) ->
{length(X),Bin}.
read_rl_lines(F) ->
- case prim_file:read_line(F) of
+ case ?PRIM_FILE:read_line(F) of
eof ->
[];
{error,X} ->
@@ -4158,9 +4316,9 @@ read_rl_lines2(F) ->
end.
read_line_all_alternating(Filename) ->
- {ok,F} = prim_file:open(Filename,[read,binary]),
+ {ok,F} = ?PRIM_FILE:open(Filename,[read,binary]),
X=read_rl_lines(F,true),
- prim_file:close(F),
+ ?PRIM_FILE:close(F),
Bin = list_to_binary([B || {ok,B} <- X]),
Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
"\r\n","\n",[global,{return,binary}]),
@@ -4194,8 +4352,8 @@ read_line_all_alternating4(Filename) ->
read_rl_lines(F,Alternate) ->
case begin
case Alternate of
- true -> prim_file:read(F,1);
- false -> prim_file:read_line(F)
+ true -> ?PRIM_FILE:read(F,1);
+ false -> ?PRIM_FILE:read_line(F)
end
end of
eof ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 01:05:48 +0000