diff options
Diffstat (limited to 'lib/kernel')
| -rw-r--r-- | lib/kernel/test/prim_file_SUITE.erl | 82 |
1 files changed, 81 insertions, 1 deletions
diff --git a/lib/kernel/test/prim_file_SUITE.erl b/lib/kernel/test/prim_file_SUITE.erl index ccf26ee034..33651fadb2 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]}, @@ -1322,6 +1326,22 @@ 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) -> + ChunkSize = 256*1024*1024+1, + Chunks = 16, + Size = Chunks * ChunkSize, + Chunk = <<0:ChunkSize/unit:8>>, + Bin = lists:duplicate(Chunks, Chunk), + ok = prim_file:write_file(Name, Bin), + {ok,#file_info{size=Size}} = file:read_file_info(Name), + ok. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -2044,3 +2064,63 @@ 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). |