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Текущий архив: 2006.06.18;
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CPU Usage   Найти похожие ветки 

← →
KALqYAN   (2006-03-20 14:21) [0]

Подскажите пожалуйста, как определить степень загрузки ЦП???

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← →
Rouse_ ©   (2006-03-20 14:29) [1]

http://rouse.front.ru/taskmon.zip

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← →
Handle   (2006-03-20 15:31) [2]

unit Unit1;

interface

uses
 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
 Dialogs, StdCtrls;
const
 SystemBasicInformation = 0;
 SystemPerformanceInformation = 2;
 SystemTimeInformation = 3;

type
 TPDWord = ^DWORD;

 TSystem_Basic_Information = packed record
   dwUnknown1: DWORD;
   uKeMaximumIncrement: ULONG;
   uPageSize: ULONG;
   uMmNumberOfPhysicalPages: ULONG;
   uMmLowestPhysicalPage: ULONG;
   uMmHighestPhysicalPage: ULONG;
   uAllocationGranularity: ULONG;
   pLowestUserAddress: Pointer;
   pMmHighestUserAddress: Pointer;
   uKeActiveProcessors: ULONG;
   bKeNumberProcessors: byte;
   bUnknown2: byte;
   wUnknown3: word;
 end;

type
 TSystem_Performance_Information = packed record
   liIdleTime: LARGE_INTEGER; {LARGE_INTEGER}
   dwSpare: array[0..75] of DWORD;
 end;

type
 TSystem_Time_Information = packed record
   liKeBootTime: LARGE_INTEGER;
   liKeSystemTime: LARGE_INTEGER;
   liExpTimeZoneBias: LARGE_INTEGER;
   uCurrentTimeZoneId: ULONG;
   dwReserved: DWORD;
 end;
type
 TForm1 = class(TForm)
   Label1: TLabel;
   Button1: TButton;
   procedure Button1Click(Sender: TObject);
 private
   { Private declarations }
 public
   { Public declarations }
 end;

var
 Form1: TForm1;
 NtQuerySystemInformation: function(infoClass: DWORD;
   buffer: Pointer;
   bufSize: DWORD;
   returnSize: TPDword): DWORD; stdcall = nil;

 liOldIdleTime: LARGE_INTEGER = ();
 liOldSystemTime: LARGE_INTEGER = ();
implementation

{$R *.dfm}
function Li2Double(x: LARGE_INTEGER): Double;
begin
 Result := x.HighPart * 4.294967296E9 + x.LowPart
end;

procedure GetCPUUsage;
var
 SysBaseInfo: TSystem_Basic_Information;
 SysPerfInfo: TSystem_Performance_Information;
 SysTimeInfo: TSystem_Time_Information;
 status: Longint; {long}
 dbSystemTime: Double;
 dbIdleTime: Double;
 bLoopAborted: boolean;
begin
 if @NtQuerySystemInformation = nil then
   NtQuerySystemInformation := GetProcAddress(GetModuleHandle("ntdll.dll"),
     "NtQuerySystemInformation");
 status := NtQuerySystemInformation(SystemBasicInformation, @SysBaseInfo,
   SizeOf(SysBaseInfo), nil);
 if status <> 0 then
   Exit;
 with SysBaseInfo do
 begin
   ShowMessage(
     Format("uKeMaximumIncrement: %d"#13"uPageSize: %d"#13   +
     "uMmNumberOfPhysicalPages: %d" + #13 + "uMmLowestPhysicalPage: %d" + #13 +
     "uMmHighestPhysicalPage: %d" + #13 + "uAllocationGranularity: %d"#13 +
     "uKeActiveProcessors: %d"#13"bKeNumberProcessors: %d"  ,
     [uKeMaximumIncrement, uPageSize, uMmNumberOfPhysicalPages,
     uMmLowestPhysicalPage, uMmHighestPhysicalPage, uAllocationGranularity,
       uKeActiveProcessors, bKeNumberProcessors]));
 end;
 bLoopAborted := False;
 while not bLoopAborted do
 begin
   status := NtQuerySystemInformation(SystemTimeInformation, @SysTimeInfo,
     SizeOf(SysTimeInfo), 0);
   if status <> 0 then
     Exit;
   status := NtQuerySystemInformation(SystemPerformanceInformation,
     @SysPerfInfo, SizeOf(SysPerfInfo), nil);
   if status <> 0 then
     Exit;
   if (liOldIdleTime.QuadPart <> 0) then
   begin
     dbIdleTime := Li2Double(SysPerfInfo.liIdleTime) -
       Li2Double(liOldIdleTime);
     dbSystemTime := Li2Double(SysTimeInfo.liKeSystemTime) -
       Li2Double(liOldSystemTime);
     dbIdleTime := dbIdleTime / dbSystemTime;
     dbIdleTime := 100.0 - dbIdleTime * 100.0 / SysBaseInfo.bKeNumberProcessors
       + 0.5;
     Form1.Label1.Caption := FormatFloat("CPU Usage: 0.0 %", dbIdleTime);
     Application.ProcessMessages;
     bLoopAborted := (GetKeyState(VK_ESCAPE) and 128 = 128) or
       Application.Terminated;
   end;
   liOldIdleTime := SysPerfInfo.liIdleTime;
   liOldSystemTime := SysTimeInfo.liKeSystemTime;
   Sleep(1000);
 end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
GetCPUUsage

end;

end.


---

← →
VirEx ©   (2006-03-20 22:18) [3]

function GetCPUSpeed: Double;
const

DelayTime = 500;
var

TimerHi : DWORD;
TimerLo : DWORD;
PriorityClass : Integer;
Priority : Integer;
begin

PriorityClass := GetPriorityClass(GetCurrentProcess);
Priority := GetThreadPriority(GetCurrentThread);
SetPriorityClass(GetCurrentProcess, REALTIME_PRIORITY_CLASS);
SetThreadPriority(GetCurrentThread, THREAD_PRIORITY_TIME_CRITICAL);

Sleep(10);

asm
DW 310Fh // rdtsc
MOV TimerLo, EAX
MOV TimerHi, EDX
end;

Sleep(DelayTime);

asm
DW 310Fh // rdtsc
SUB EAX, TimerLo
SBB EDX, TimerHi
MOV TimerLo, EAX
MOV TimerHi, EDX
end;

SetThreadPriority(GetCurrentThread, Priority);
SetPriorityClass(GetCurrentProcess, PriorityClass);

Result := TimerLo / (1000.0 * DelayTime);
end;

===========================================
// Usage ...

LabelCPUSpeed.Caption := Format("CPU speed: %f MHz", [GetCPUSpeed]);

---

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Форум: "WinAPI";
Текущий архив: 2006.06.18;
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