mirror of
https://github.com/doublecmd/doublecmd.git
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139 lines
3.2 KiB
ObjectPascal
139 lines
3.2 KiB
ObjectPascal
{
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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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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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Copyright (C) 2010-2012 Przemysław Nagay (cobines@gmail.com)
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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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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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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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program fsgenerator;
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{$mode objfpc}{$H+}
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uses
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SysUtils, Classes, Windows;
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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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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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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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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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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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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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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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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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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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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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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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Sleep(10);
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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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WriteLn('Finished changing');
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Filenames.Free;
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end.
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