113 lines
3.1 KiB
ObjectPascal
113 lines
3.1 KiB
ObjectPascal
{-----------------------------------------------------------------------------
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The contents of this file are subject to the Mozilla Public License
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Version 1.1 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1.1.html
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
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the specific language governing rights and limitations under the License.
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The Original Code is: JvCpuUsage.PAS, released on 2001-02-28.
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The Initial Developer of the Original Code is Sébastien Buysse [sbuysse att buypin dott com]
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Portions created by Sébastien Buysse are Copyright (C) 2001 Sébastien Buysse.
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All Rights Reserved.
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Contributor(s): Michael Beck [mbeck att bigfoot dott com].
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You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
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located at http://jvcl.sourceforge.net
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Known Issues:
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-----------------------------------------------------------------------------}
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// $Id: JvCpuUsage.pas,v 1.11 2005/09/15 07:22:54 marquardt Exp $
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unit JvCpuUsage;
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{$I jvcl.inc}
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{$I windowsonly.inc}
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interface
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uses
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{$IFDEF UNITVERSIONING}
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JclUnitVersioning,
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{$ENDIF UNITVERSIONING}
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Windows, Classes, Registry,
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JvComponentBase;
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// (rom) the whole component seems to be badly designed
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type
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TJvCpuUsage = class(TJvComponent)
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private
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FValue: Cardinal;
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FUsage: string;
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FRegistry: TRegistry;
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function GetUsage: string;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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published
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property Usage: string read GetUsage write FUsage;
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end;
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{$IFDEF UNITVERSIONING}
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const
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UnitVersioning: TUnitVersionInfo = (
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RCSfile: '$RCSfile: JvCpuUsage.pas,v $';
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Revision: '$Revision: 1.11 $';
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Date: '$Date: 2005/09/15 07:22:54 $';
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LogPath: 'JVCL\run'
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);
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{$ENDIF UNITVERSIONING}
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implementation
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uses
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SysUtils;
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const
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RC_CpuUsageKey = 'KERNEL\CPUUsage';
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RC_PerfStart = 'PerfStats\StartStat';
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RC_PerfStop = 'PerfStats\StopStat';
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RC_PerfStat = 'PerfStats\StatData';
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constructor TJvCpuUsage.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FRegistry := TRegistry.Create;
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FRegistry.RootKey := HKEY_DYN_DATA;
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FRegistry.OpenKey(RC_PerfStart, False);
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FRegistry.ReadBinaryData(RC_CpuUsageKey, FValue, SizeOf(FValue));
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end;
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destructor TJvCpuUsage.Destroy;
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begin
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FRegistry.OpenKey(RC_PerfStop, False);
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FRegistry.ReadBinaryData(RC_CpuUsageKey, FValue, SizeOf(FValue));
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FRegistry.CloseKey;
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FRegistry.Free;
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inherited Destroy;
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end;
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function TJvCpuUsage.GetUsage: string;
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begin
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FRegistry.OpenKey(RC_PerfStat, False);
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FRegistry.ReadBinaryData(RC_CpuUsageKey, FValue, SizeOf(FValue));
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FRegistry.CloseKey;
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Result := IntToStr(FValue);
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end;
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{$IFDEF UNITVERSIONING}
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initialization
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RegisterUnitVersion(HInstance, UnitVersioning);
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finalization
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UnregisterUnitVersion(HInstance);
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{$ENDIF UNITVERSIONING}
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end.
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