WMI Speicherfresser wie beseitiegen

[himitsu]

Nja, bei deim einem Speicherleck, in meinem Code, lag es daran, daß die Schnittstelle nur als Out-Parameter definiert ist, weswegen der entsprechende "alte" Inhalt des Variants nie freigegeben wurde, da der Variant selber einfach nur überschrieben wurde.
Leider wird dieses Problem in vielen Codes nicht beachtet, wodurch diese vielen Lecks überall entstehen.

Tja, und darum erstmal der der Versuch von oben (VarClear), wobei das mit dem ADsFreeEnumerator(varArr) sogar im MSDN drinstand und es dennoch in seinem Code fehlte.

Jetzt hat er erstmal was zum Probieren und ich bin gespannt, ob sich was ändert.

[Jackie1983]

Servus,

VarClear(varArr) hat weitergeholfen.
Habe zwei VarClear(varArr) in den while schleifen eingebaut und nun past es.
Wenn die Funktion aufgerufen wird steigt der Speicher nur einmalig um +2MB,
denke wegen der activeds.dll einbindung.

thx

[Gruber_Hans_12345]

Hier auch noch mal dir Frage

Hat wer ein funktionierendes Beispiel das eine einfache WMI Abfrage macht, die kein Memory Leak hat?

[t.roller]

Delphi-Quellcode:

//     This code was generated by the Wmi Delphi Code Creator http://theroadtodelphi.wordpress.com
//     Version: 1.8.3.0
//     LIABILITY DISCLAIMER
//     THIS GENERATED CODE IS DISTRIBUTED "AS IS". NO WARRANTY OF ANY KIND IS EXPRESSED OR IMPLIED.
//     YOU USE IT AT YOUR OWN RISK. THE AUTHOR NOT WILL BE LIABLE FOR DATA LOSS,
//     DAMAGES AND LOSS OF PROFITS OR ANY OTHER KIND OF LOSS WHILE USING OR MISUSING THIS CODE.

program GetWMI_Info;

{$APPTYPE CONSOLE}

uses
(*  SysUtils, ActiveX, ComObj, Variants;  *)
  Winapi.Windows,
  System.SysUtils,
  Winapi.ActiveX,
  System.Win.ComObj,
  System.Variants;

function VarToInt(const AVariant: Variant): INT64;
begin Result := StrToIntDef(Trim(VarToStr(AVariant)), 0); end;

// "CIM_MemoryCapacity" beschreibt den Speichertyp, der auf einem physikalischen 
// Element installiert werden kann, und seine minimale/maximale Konfiguration. 
// Instanzen der Klasse "CIM_PhysicalMemory" enthalten Informationen über die 
// Speicherposition und die minimalen/maximalen Anforderungen.

procedure  GetCIM_MemoryCapacityInfo;
const
  WbemUser            ='';
  WbemPassword        ='';
  WbemComputer        ='localhost';
  wbemFlagForwardOnly = $00000020;
var
  FSWbemLocator : OLEVariant;
  FWMIService   : OLEVariant;
  FWbemObjectSet: OLEVariant;
  FWbemObject   : OLEVariant;
  oEnum         : IEnumvariant;
  iValue        : LongWord;
begin;
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);
  FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM CIM_MemoryCapacity','WQL',wbemFlagForwardOnly);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  while oEnum.Next(1, FWbemObject, iValue) = 0 do
  begin
    Writeln(Format('Caption                  %s',[VarToStr(FWbemObject.Caption)]));// String
    Writeln(Format('Description              %s',[VarToStr(FWbemObject.Description)]));// String
    Writeln(Format('MaximumMemoryCapacity    %d',[VarToInt(FWbemObject.MaximumMemoryCapacity)]));// Uint64
    Writeln(Format('MemoryType               %d',[VarToInt(FWbemObject.MemoryType)]));// Uint16
    Writeln(Format('MinimumMemoryCapacity    %d',[VarToInt(FWbemObject.MinimumMemoryCapacity)]));// Uint64
    Writeln(Format('Name                     %s',[VarToStr(FWbemObject.Name)]));// String
       
    Writeln('');
    FWbemObject:=Unassigned;
  end;
end;

procedure  GetCIM_PhysicalMemoryInfo;
const
  WbemUser            ='';
  WbemPassword        ='';
  WbemComputer        ='localhost';
  wbemFlagForwardOnly = $00000020;
var
  FSWbemLocator : OLEVariant;
  FWMIService   : OLEVariant;
  FWbemObjectSet: OLEVariant;
  FWbemObject   : OLEVariant;
  oEnum         : IEnumvariant;
  iValue        : LongWord;
begin;
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);
  FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM CIM_PhysicalMemory','WQL',wbemFlagForwardOnly);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  while oEnum.Next(1, FWbemObject, iValue) = 0 do
  begin
    Writeln(Format('BankLabel               %s',[VarToStr(FWbemObject.BankLabel)]));// String
    Writeln(Format('Capacity                %d',[VarToInt(FWbemObject.Capacity)]));// Uint64
    Writeln(Format('Caption                 %s',[VarToStr(FWbemObject.Caption)]));// String
    Writeln(Format('CreationClassName       %s',[VarToStr(FWbemObject.CreationClassName)]));// String
    Writeln(Format('DataWidth               %d',[VarToInt(FWbemObject.DataWidth)]));// Uint16
    Writeln(Format('Description             %s',[VarToStr(FWbemObject.Description)]));// String
    Writeln(Format('FormFactor              %d',[VarToInt(FWbemObject.FormFactor)]));// Uint16
    Writeln(Format('HotSwappable            %s',[VarToStr(FWbemObject.HotSwappable)]));// Boolean
    Writeln(Format('InstallDate             %s',[VarToStr(FWbemObject.InstallDate)]));// Datetime
    Writeln(Format('InterleavePosition      %d',[VarToInt(FWbemObject.InterleavePosition)]));// Uint32
    Writeln(Format('Manufacturer            %s',[VarToStr(FWbemObject.Manufacturer)]));// String
    Writeln(Format('MemoryType              %d',[VarToInt(FWbemObject.MemoryType)]));// Uint16
    Writeln(Format('Model                   %s',[VarToStr(FWbemObject.Model)]));// String
    Writeln(Format('Name                    %s',[VarToStr(FWbemObject.Name)]));// String
    Writeln(Format('OtherIdentifyingInfo    %s',[VarToStr(FWbemObject.OtherIdentifyingInfo)]));// String
    Writeln(Format('PartNumber              %s',[VarToStr(FWbemObject.PartNumber)]));// String
    Writeln(Format('PositionInRow           %d',[VarToInt(FWbemObject.PositionInRow)]));// Uint32
    Writeln(Format('PoweredOn               %s',[VarToStr(FWbemObject.PoweredOn)]));// Boolean
    Writeln(Format('Removable               %s',[VarToStr(FWbemObject.Removable)]));// Boolean
    Writeln(Format('Replaceable             %s',[VarToStr(FWbemObject.Replaceable)]));// Boolean
    Writeln(Format('SerialNumber            %s',[VarToStr(FWbemObject.SerialNumber)]));// String
    Writeln(Format('SKU                     %s',[VarToStr(FWbemObject.SKU)]));// String
    Writeln(Format('Speed                   %d',[VarToInt(FWbemObject.Speed)]));// Uint32
    Writeln(Format('Status                  %s',[VarToStr(FWbemObject.Status)]));// String
    Writeln(Format('Tag                     %s',[VarToStr(FWbemObject.Tag)]));// String
    Writeln(Format('TotalWidth              %d',[VarToInt(FWbemObject.TotalWidth)]));// Uint16
    Writeln(Format('Version                 %s',[VarToStr(FWbemObject.Version)]));// String

    Writeln('');
    FWbemObject:=Unassigned;
  end;
end;

procedure  GetWin32_PerfRawData_PerfOS_MemoryInfo;
const
  WbemUser            ='';
  WbemPassword        ='';
  WbemComputer        ='localhost';
  wbemFlagForwardOnly = $00000020;
var
  FSWbemLocator : OLEVariant;
  FWMIService   : OLEVariant;
  FWbemObjectSet: OLEVariant;
  FWbemObject   : OLEVariant;
  oEnum         : IEnumvariant;
  iValue        : LongWord;
begin;
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);
  FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM Win32_PerfRawData_PerfOS_Memory','WQL',wbemFlagForwardOnly);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  while oEnum.Next(1, FWbemObject, iValue) = 0 do
  begin
    Writeln(Format('AvailableBytes                          %d',[VarToInt(FWbemObject.AvailableBytes)]));// Uint64
    Writeln(Format('AvailableKBytes                         %d',[VarToInt(FWbemObject.AvailableKBytes)]));// Uint64
    Writeln(Format('AvailableMBytes                         %d',[VarToInt(FWbemObject.AvailableMBytes)]));// Uint64
    Writeln(Format('CacheBytes                              %d',[VarToInt(FWbemObject.CacheBytes)]));// Uint64
    Writeln(Format('CacheBytesPeak                          %d',[VarToInt(FWbemObject.CacheBytesPeak)]));// Uint64
    Writeln(Format('CacheFaultsPersec                       %d',[VarToInt(FWbemObject.CacheFaultsPersec)]));// Uint32
    Writeln(Format('Caption                                 %s',[VarToStr(FWbemObject.Caption)]));// String
    Writeln(Format('CommitLimit                             %d',[VarToInt(FWbemObject.CommitLimit)]));// Uint64
    Writeln(Format('CommittedBytes                          %d',[VarToInt(FWbemObject.CommittedBytes)]));// Uint64
    Writeln(Format('DemandZeroFaultsPersec                  %d',[VarToInt(FWbemObject.DemandZeroFaultsPersec)]));// Uint32
    Writeln(Format('Description                             %s',[VarToStr(FWbemObject.Description)]));// String
    Writeln(Format('FreeAndZeroPageListBytes                %d',[VarToInt(FWbemObject.FreeAndZeroPageListBytes)]));// Uint64
    Writeln(Format('FreeSystemPageTableEntries              %d',[VarToInt(FWbemObject.FreeSystemPageTableEntries)]));// Uint32
    Writeln(Format('Frequency_Object                        %d',[VarToInt(FWbemObject.Frequency_Object)]));// Uint64
    Writeln(Format('Frequency_PerfTime                      %d',[VarToInt(FWbemObject.Frequency_PerfTime)]));// Uint64
    Writeln(Format('Frequency_Sys100NS                      %d',[VarToInt(FWbemObject.Frequency_Sys100NS)]));// Uint64
    Writeln(Format('LongTermAverageStandbyCacheLifetimes    %d',[VarToInt(FWbemObject.LongTermAverageStandbyCacheLifetimes)]));// Uint32
    Writeln(Format('ModifiedPageListBytes                   %d',[VarToInt(FWbemObject.ModifiedPageListBytes)]));// Uint64
    Writeln(Format('Name                                    %s',[VarToStr(FWbemObject.Name)]));// String
    Writeln(Format('PageFaultsPersec                        %d',[VarToInt(FWbemObject.PageFaultsPersec)]));// Uint32
    Writeln(Format('PageReadsPersec                         %d',[VarToInt(FWbemObject.PageReadsPersec)]));// Uint32
    Writeln(Format('PagesInputPersec                        %d',[VarToInt(FWbemObject.PagesInputPersec)]));// Uint32
    Writeln(Format('PagesOutputPersec                       %d',[VarToInt(FWbemObject.PagesOutputPersec)]));// Uint32
    Writeln(Format('PagesPersec                             %d',[VarToInt(FWbemObject.PagesPersec)]));// Uint32
    Writeln(Format('PageWritesPersec                        %d',[VarToInt(FWbemObject.PageWritesPersec)]));// Uint32
    Writeln(Format('PercentCommittedBytesInUse              %d',[VarToInt(FWbemObject.PercentCommittedBytesInUse)]));// Uint32
    Writeln(Format('PercentCommittedBytesInUse_Base         %d',[VarToInt(FWbemObject.PercentCommittedBytesInUse_Base)]));// Uint32
    Writeln(Format('PoolNonpagedAllocs                      %d',[VarToInt(FWbemObject.PoolNonpagedAllocs)]));// Uint32
    Writeln(Format('PoolNonpagedBytes                       %d',[VarToInt(FWbemObject.PoolNonpagedBytes)]));// Uint64
    Writeln(Format('PoolPagedAllocs                         %d',[VarToInt(FWbemObject.PoolPagedAllocs)]));// Uint32
    Writeln(Format('PoolPagedBytes                          %d',[VarToInt(FWbemObject.PoolPagedBytes)]));// Uint64
    Writeln(Format('PoolPagedResidentBytes                  %d',[VarToInt(FWbemObject.PoolPagedResidentBytes)]));// Uint64
    Writeln(Format('StandbyCacheCoreBytes                   %d',[VarToInt(FWbemObject.StandbyCacheCoreBytes)]));// Uint64
    Writeln(Format('StandbyCacheNormalPriorityBytes         %d',[VarToInt(FWbemObject.StandbyCacheNormalPriorityBytes)]));// Uint64
    Writeln(Format('StandbyCacheReserveBytes                %d',[VarToInt(FWbemObject.StandbyCacheReserveBytes)]));// Uint64
    Writeln(Format('SystemCacheResidentBytes                %d',[VarToInt(FWbemObject.SystemCacheResidentBytes)]));// Uint64
    Writeln(Format('SystemCodeResidentBytes                 %d',[VarToInt(FWbemObject.SystemCodeResidentBytes)]));// Uint64
    Writeln(Format('SystemCodeTotalBytes                    %d',[VarToInt(FWbemObject.SystemCodeTotalBytes)]));// Uint64
    Writeln(Format('SystemDriverResidentBytes               %d',[VarToInt(FWbemObject.SystemDriverResidentBytes)]));// Uint64
    Writeln(Format('SystemDriverTotalBytes                  %d',[VarToInt(FWbemObject.SystemDriverTotalBytes)]));// Uint64
    Writeln(Format('Timestamp_Object                        %d',[VarToInt(FWbemObject.Timestamp_Object)]));// Uint64
    Writeln(Format('Timestamp_PerfTime                      %d',[VarToInt(FWbemObject.Timestamp_PerfTime)]));// Uint64
    Writeln(Format('Timestamp_Sys100NS                      %d',[VarToInt(FWbemObject.Timestamp_Sys100NS)]));// Uint64
    Writeln(Format('TransitionFaultsPersec                  %d',[VarToInt(FWbemObject.TransitionFaultsPersec)]));// Uint32
    Writeln(Format('TransitionPagesRePurposedPersec         %d',[VarToInt(FWbemObject.TransitionPagesRePurposedPersec)]));// Uint32
    Writeln(Format('WriteCopiesPersec                       %d',[VarToInt(FWbemObject.WriteCopiesPersec)]));// Uint32

    Writeln('');
    FWbemObject:=Unassigned;
  end;
end;
//------------------------------------------------------------------------------
var
  memory: TMemoryStatusEx;
begin
ReportMemoryLeaksOnShutdown := True;
  memory.dwLength := SizeOf(memory);
  GlobalMemoryStatusEx(memory);
  WriteLn('Total memory:     ' + IntToStr(memory.ullTotalPhys) + ' Bytes');
  WriteLn('Available memory: ' + IntToStr(memory.ullAvailPhys) + ' Bytes');

try
    CoInitialize(nil);
    try
      GetCIM_MemoryCapacityInfo;
  WriteLn('---------------------------------------------------------------');
      GetCIM_PhysicalMemoryInfo;
  WriteLn('---------------------------------------------------------------');
      GetWin32_PerfRawData_PerfOS_MemoryInfo;
    finally
      CoUninitialize;
    end;
 except
    on E:EOleException do
        Writeln(Format('EOleException %s %x', [E.Message,E.ErrorCode])); 
    on E:Exception do
        Writeln(E.Classname, ':', E.Message);
 end;
 Writeln('Press Enter to exit'); Readln;
end.