diff options
Diffstat (limited to 'lib/kernel/test/prim_file_SUITE.erl')
| -rw-r--r-- | lib/kernel/test/prim_file_SUITE.erl | 109 |
1 files changed, 108 insertions, 1 deletions
diff --git a/lib/kernel/test/prim_file_SUITE.erl b/lib/kernel/test/prim_file_SUITE.erl index ccf26ee034..3e2202922c 100644 --- a/lib/kernel/test/prim_file_SUITE.erl +++ b/lib/kernel/test/prim_file_SUITE.erl @@ -52,6 +52,10 @@ list_dir_limit/1]). -export([advise/1]). +-export([large_write/1]). + +%% System probe functions that might be handy to check from the shell +-export([unix_free/1]). -include_lib("test_server/include/test_server.hrl"). -include_lib("kernel/include/file.hrl"). @@ -83,7 +87,7 @@ groups() -> cur_dir_1a, cur_dir_1b]}, {files, [], [{group, open}, {group, pos}, {group, file_info}, - truncate, sync, datasync, advise]}, + truncate, sync, datasync, advise, large_write]}, {open, [], [open1, modes, close, access, read_write, pread_write, append, exclusive]}, @@ -290,6 +294,7 @@ make_del_dir(Config, Handle, Suffix) -> %% Don't worry ;-) the parent directory should never be empty, right? ?line case ?PRIM_FILE_call(del_dir, Handle, [".."]) of {error, eexist} -> ok; + {error, eacces} -> ok; %OpenBSD {error, einval} -> ok %FreeBSD end, ?line {error, enoent} = ?PRIM_FILE_call(del_dir, Handle, [""]), @@ -1322,6 +1327,41 @@ advise(Config) when is_list(Config) -> ?line test_server:timetrap_cancel(Dog), ok. +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +large_write(Config) when is_list(Config) -> + run_large_file_test(Config, + fun(Name) -> do_large_write(Name) end, + "_large_write"). + +do_large_write(Name) -> + Dog = test_server:timetrap(test_server:minutes(60)), + ChunkSize = (256 bsl 20) + 1, % 256 M + 1 + Chunks = 16, % times 16 -> 4 G + 16 + Base = 100, + Interleave = lists:seq(Base+1, Base+Chunks), + Chunk = <<0:ChunkSize/unit:8>>, + Data = zip_data(lists:duplicate(Chunks, Chunk), Interleave), + Size = Chunks * ChunkSize + Chunks, % 4 G + 32 + Wordsize = erlang:system_info(wordsize), + case prim_file:write_file(Name, Data) of + ok when Wordsize =:= 8 -> + {ok,#file_info{size=Size}} = file:read_file_info(Name), + {ok,Fd} = prim_file:open(Name, [read]), + check_large_write(Dog, Fd, ChunkSize, 0, Interleave); + {error,einval} when Wordsize =:= 4 -> + ok + end. + +check_large_write(Dog, Fd, ChunkSize, Pos, [X|Interleave]) -> + Pos1 = Pos + ChunkSize, + {ok,Pos1} = prim_file:position(Fd, {cur,ChunkSize}), + {ok,[X]} = prim_file:read(Fd, 1), + check_large_write(Dog, Fd, ChunkSize, Pos1+1, Interleave); +check_large_write(Dog, Fd, _, _, []) -> + eof = prim_file:read(Fd, 1), + test_server:timetrap_cancel(Dog), + ok. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -2044,3 +2084,70 @@ list_dir_limit_cleanup(Dir, Handle, N, Cnt) -> ?PRIM_FILE:delete(Handle, filename:join(Dir, Name)), list_dir_limit_cleanup(Dir, Handle, N, Cnt+1). +%%% +%%% Support for testing large files. +%%% + +run_large_file_test(Config, Run, Name) -> + case {os:type(),os:version()} of + {{win32,nt},_} -> + do_run_large_file_test(Config, Run, Name); + {{unix,sunos},OsVersion} when OsVersion < {5,5,1} -> + {skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"}; + {{unix,_},_} -> + N = unix_free(?config(priv_dir, Config)), + io:format("Free disk: ~w KByte~n", [N]), + if N < 5 bsl 20 -> + %% Less than 5 GByte free + {skip,"Less than 5 GByte free disk"}; + true -> + do_run_large_file_test(Config, Run, Name) + end; + _ -> + {skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"} + end. + + +do_run_large_file_test(Config, Run, Name0) -> + Name = filename:join(?config(priv_dir, Config), + ?MODULE_STRING ++ Name0), + + %% Set up a process that will delete this file. + Tester = self(), + Deleter = + spawn( + fun() -> + Mref = erlang:monitor(process, Tester), + receive + {'DOWN',Mref,_,_,_} -> ok; + {Tester,done} -> ok + end, + prim_file:delete(Name) + end), + + %% Run the test case. + Res = Run(Name), + + %% Delete file and finish deleter process. + Mref = erlang:monitor(process, Deleter), + Deleter ! {Tester,done}, + receive {'DOWN',Mref,_,_,_} -> ok end, + + Res. + +unix_free(Path) -> + Cmd = ["df -k '",Path,"'"], + DF0 = os:cmd(Cmd), + io:format("$ ~s~n~s", [Cmd,DF0]), + Lines = re:split(DF0, "\n", [trim,{return,list}]), + Last = lists:last(Lines), + RE = "^[^\\s]*\\s+\\d+\\s+\\d+\\s+(\\d+)", + {match,[Avail]} = re:run(Last, RE, [{capture,all_but_first,list}]), + list_to_integer(Avail). + +zip_data([A|As], [B|Bs]) -> + [[A,B]|zip_data(As, Bs)]; +zip_data([], Bs) -> + Bs; +zip_data(As, []) -> + As. |