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@@ -0,0 +1,139 @@
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+{
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+ Filesystem traffic generator
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+ -------------------------------------------------------------------------
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+ Creates, modifies, removes files, quickly and in large quantities.
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+
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+ Useful for testing how a program behaves when there's a lot of traffic
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+ happening on the file system.
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+
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+ Copyright (C) 2010-2012 Przemysław Nagay ([email protected])
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2 of the License, or
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+ (at your option) any later version.
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+
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+ This program is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ GNU General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with this program; if not, write to the Free Software
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+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+}
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+
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+program fsgenerator;
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+
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+{$mode objfpc}{$H+}
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+
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+uses
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+ SysUtils, Classes, Windows;
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+
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+var
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+ Path: UTF8String;
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+ fs: TFileStream;
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+ filenames: TStringList;
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+ nr: Integer;
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+ buffer: array[0..16383] of byte;
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+
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+procedure GenNames;
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+var
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+ i, j: Integer;
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+ name: String;
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+begin
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+ for i := 0 to Random(1000) do
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+ begin
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+ name := '';
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+ for j := 0 to random(100) do
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+ name := name + chr(random(ord('z') - ord('a')) + ord('a'));
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+ filenames.Add(name);
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+ end;
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+end;
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+
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+function RandomName: String;
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+begin
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+ Result := Path + filenames[Random(Filenames.Count)];
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+end;
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+
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+procedure Create(name: String);
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+begin
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+ fs := TFileStream.Create(name, fmCreate);
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+ fs.Write(buffer, random(sizeof(buffer)));
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+ fs.Free;
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+end;
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+
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+procedure Modify(name: String);
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+var
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+ P: Int64;
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+ count: Int64;
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+ Mode: Word;
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+ size: int64;
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+begin
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+ if not FileExists(name) then
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+ mode := fmCreate
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+ else
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+ mode := fmOpenReadWrite;
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+
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+ fs := TFileStream.Create(Name, mode);
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+ if mode = fmCreate then
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+ begin
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+ fs.Write(buffer, random(sizeof(buffer)));
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+ fs.Seek(0, soBeginning);
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+ end;
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+
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+ size := fs.size;
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+ p := random(size);
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+ fs.Seek(p, soBeginning);
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+ count := min(sizeof(buffer),random(size-p));
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+ fs.Write(buffer, count);
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+ //writeln('writing ',count, ' p=',p,' size=',size);
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+ fs.Free;
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+end;
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+
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+procedure Delete(name: String);
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+begin
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+ if FileExists(Name) then
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+ Sysutils.DeleteFile(Name);
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+end;
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+
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+begin
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+ if Paramcount = 0 then
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+ begin
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+ WriteLn('File system traffic generator.');
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+ WriteLn('Creates, modifies, removes files, quickly and in large quantities.');
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+ Writeln;
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+ WriteLn('Usage:');
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+ WriteLn(ExtractFileName(ParamStr(0)) + ' <destination_path>');
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+ Exit;
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+ end;
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+
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+ FileNames := TStringList.Create;
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+ GenNames;
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+ Path := IncludeTrailingPathDelimiter(ParamStr(1));
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+ ForceDirectories(Path);
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+
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+ WriteLn('Starting changing ', Path);
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+ while True do
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+ begin
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+ case Random(6) of
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+ 0: Sleep(10);
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+ 1: Modify(RandomName);
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+ 2: Create(RandomName);
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+ 3: Modify(RandomName);
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+ 4: Delete(RandomName);
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+ 5: Modify(RandomName);
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+ end;
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+
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+ Sleep(10);
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+
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+ if (GetKeyState(VK_SPACE) < 0) or
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+ (GetKeyState(VK_SHIFT) < 0) or
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+ (GetKeyState(VK_ESCAPE) < 0) then
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+ Break;
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+ end;
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+
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+ WriteLn('Finished changing');
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+ Filenames.Free;
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+end.
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+
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cobines