高分相送！

[jxczr2002]

请问哪位有获得CPU的利率的源码。在线等待。

[sysu]

How to get the CPU usage in percent
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;

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


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

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');

// get number of processors in the system

status := NtQuerySystemInformation(SystemBasicInformation, @SysBaseInfo, SizeOf(SysBaseInfo), nil);
if status <> 0 then Exit;

// Show some information
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

// get new system time
status := NtQuerySystemInformation(SystemTimeInformation, @SysTimeInfo, SizeOf(SysTimeInfo), 0);
if status <> 0 then Exit;

// get new CPU's idle time
status := NtQuerySystemInformation(SystemPerformanceInformation, @SysPerfInfo, SizeOf(SysPerfInfo), nil);
if status <> 0 then Exit;

// if it's a first call - skip it
if (liOldIdleTime.QuadPart <> 0) then
begin

// CurrentValue = NewValue - OldValue
dbIdleTime := Li2Double(SysPerfInfo.liIdleTime) - Li2Double(liOldIdleTime);
dbSystemTime := Li2Double(SysTimeInfo.liKeSystemTime) - Li2Double(liOldSystemTime);

// CurrentCpuIdle = IdleTime / SystemTime
dbIdleTime := dbIdleTime / dbSystemTime;

// CurrentCpuUsage% = 100 - (CurrentCpuIdle * 100) / NumberOfProcessors
dbIdleTime := 100.0 - dbIdleTime * 100.0 / SysBaseInfo.bKeNumberProcessors + 0.5;

// Show Percentage
Form1.Label1.Caption := FormatFloat('CPU Usage: 0.0 %',dbIdleTime);

Application.ProcessMessages;

// Abort if user pressed ESC or Application is terminated
bLoopAborted := (GetKeyState(VK_ESCAPE) and 128 = 128) or Application.Terminated;

end;

// store new CPU's idle and system time
liOldIdleTime := SysPerfInfo.liIdleTime;
liOldSystemTime := SysTimeInfo.liKeSystemTime;

// wait one second
Sleep(1000);
end;
end;


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

[Ivin]

获取当前的系统的CPU占用的百分率:
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;

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


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

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');

// get number of processors in the system

status := NtQuerySystemInformation(SystemBasicInformation, @SysBaseInfo, SizeOf(SysBaseInfo), nil);
if status <> 0 then Exit;

// Show some information
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

// get new system time
status := NtQuerySystemInformation(SystemTimeInformation, @SysTimeInfo, SizeOf(SysTimeInfo), 0);
if status <> 0 then Exit;

// get new CPU's idle time
status := NtQuerySystemInformation(SystemPerformanceInformation, @SysPerfInfo, SizeOf(SysPerfInfo), nil);
if status <> 0 then Exit;

// if it's a first call - skip it
if (liOldIdleTime.QuadPart <> 0) then
begin

// CurrentValue = NewValue - OldValue
dbIdleTime := Li2Double(SysPerfInfo.liIdleTime) - Li2Double(liOldIdleTime);
dbSystemTime := Li2Double(SysTimeInfo.liKeSystemTime) - Li2Double(liOldSystemTime);

// CurrentCpuIdle = IdleTime / SystemTime
dbIdleTime := dbIdleTime / dbSystemTime;

// CurrentCpuUsage% = 100 - (CurrentCpuIdle * 100) / NumberOfProcessors
dbIdleTime := 100.0 - dbIdleTime * 100.0 / SysBaseInfo.bKeNumberProcessors + 0.5;

// Show Percentage
Form1.Label1.Caption := FormatFloat('CPU Usage: 0.0 %',dbIdleTime);

Application.ProcessMessages;

// Abort if user pressed ESC or Application is terminated
bLoopAborted := (GetKeyState(VK_ESCAPE) and 128 = 128) or Application.Terminated;

end;

// store new CPU's idle and system time
liOldIdleTime := SysPerfInfo.liIdleTime;
liOldSystemTime := SysTimeInfo.liKeSystemTime;

// wait one second
Sleep(1000);
end;
end;


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

[Ivin]

unit Unit1;

interface

uses
Windows, Messages, SysUtils,
Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls, Buttons;

type
TForm1 = class(TForm)
Label1 : TLabel;
procedure Label1Click(Sender: TObject);
procedure Label1DblClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1 : TForm1;
stop : boolean;

implementation

{$R *.DFM}

function GetCPUSpeed : Double;
const
DelayTime = 500; // measure time in ms
var
TimerHi, TimerLo : DWORD;
PriorityClass, 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;


procedure TForm1.Label1Click(Sender: TObject);
begin
Stop := False;
while not Stop do
begin
label1.Caption := Format('CPU speed: %f MHz',
[GetCPUSpeed]);
Application.ProcessMessages;
end;
end;


procedure TForm1.Label1DblClick(Sender: TObject);
begin
Stop := True;
end;

end.

[Ivin]

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ComCtrls, CommCtrl, StdCtrls, Menus,WinSpool, ExtCtrls, Validat, Buttons,
Registry;

type
TForm1 = class(TForm)
Button1: TButton;
Label1: TLabel;
Label2: TLabel;
Timer1: TTimer;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
private
{ Private-Deklarationen }
started : boolean;
reg : TRegistry;
public
{ Public-Deklarationen }
end;

var
Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
Dummy : array[0..1024] of byte;

begin
Reg:=TRegistry.Create;
Reg.RootKey:=HKEY_DYN_DATA; //统计数据在这个表项下
Reg.OpenKey('PerfStats\StartStat',false); // Reg.ReadBinaryData('KERNEL\CPUUsage',Dummy,Sizeof(Dummy));
Reg.CloseKey;
started:=true;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
var
CPUU : integer;

begin
if started then
begin
Reg.OpenKey('PerfStats\StatData',false);
Reg.ReadBinaryData('KERNEL\CPUUsage',CPUU,SizeOf(Integer));
Reg.CloseKey;
Label1.Caption:=IntToStr(CPUU)+'%';
end;
end;

procedure TForm1.Button2Click(Sender: TObject);
var
Dummy : array[0..1024] of byte;

begin
'PerfStats/StopStat' }
Reg.OpenKey('PerfStats\StopStat',false);
Reg.ReadBinaryData('KERNEL\CPUUsage',Dummy,SizeOf(Dummy));
Reg.Free;
Started:=false;
end;

end.

[yelei923]

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;

type
TForm1 = class(TForm)
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Edit1: TEdit;
Edit2: TEdit;
Edit3: TEdit;
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
const
delay=500;
var
cpuinfo:system_info;
priorityclass:integer;
priority:integer;
timerlo:DWord;
timerHi:DWord;
begin
getsysteminfo(cpuinfo);
edit1.Text:=inttostr(cpuinfo.wProcessorArchitecture);
edit2.Text:=inttostr(cpuinfo.dwProcessorType);
priorityclass:=getpriorityclass(getcurrentprocess);
priority:=getthreadpriority(getcurrentthread);
setpriorityclass(getcurrentprocess,realtime_priority_class);
setthreadpriority(getcurrentthread,thread_priority_time_critical);
sleep(10);
asm
dw 310Fh
mov timerlo,eax
mov timerhi,edx
end;
sleep(delay);
asm
dw 310Fh
sub eax,timerlo
sbb edx,timerhi
mov timerlo,eax
mov timerhi,edx
end;

setthreadpriority(getcurrentthread,priority);
setpriorityclass(getcurrentprocess,priority);
edit3.Text:=floattostr(timerlo/(1000*delay))+'MHz';
end;

end.