Hej!

Undrar bara om det finns något sätt att via VB övervaka hur mycket minne EN applikation (eller ännu hellre ETT objekt) tar?

Har sett att det finns API-funktioner som returnerar totala minnesåtgången för hela maskinen, men KAN man få reda på detta för enstaka pplikationer/dll:er/ocx:er/objekt på något sätt?

mvh Qez

Varje applikations minnesåtgång ser du i aktivitetshanteraren i NT/W2K/XP. Ctrl+Alt+Del>Aktivitetshanteraren.

/Johan

Som jag skrev i min fråga så ville jag veta hur man ser minnesåtgången "via VB", tre-knapps-lösningen känner jag också till! :-)

Har nu via vår "hacker-expert" fått reda på att det GÅR att ta reda på en viss process minneanvändning via API-anrop. Skall höra närmare med honom om jag kan få lite kodexempel...

Under tiden är jag självklart fortfarande intresserad av KOD-EXEMPEL! :-)

// Qez

Testa med följande så tror jag att du skall kunna få det att funka
Jag kunde inte få in all kod i samma medelande så det fortsätter nedan

<code>
'In a form
Private Sub Form_Load()
'Code submitted by Roger Taylor
'enumerate all the different explorer.exe processes
GetProcesses "explorer.exe"
End Sub

'In a module

Public Declare Function GetProcessMemoryInfo Lib "PSAPI.DLL" (ByVal hProcess As Long, ppsmemCounters As PROCESS_MEMORY_COUNTERS, ByVal cb As Long) As Long
Public Declare Function Process32First Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long
Public Declare Function Process32Next Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long
Public Declare Function CloseHandle Lib "Kernel32.dll" (ByVal Handle As Long) As Long
Public Declare Function OpenProcess Lib "Kernel32.dll" (ByVal dwDesiredAccessas As Long, ByVal bInheritHandle As Long, ByVal dwProcId As Long) As Long
Public Declare Function EnumProcesses Lib "PSAPI.DLL" (ByRef lpidProcess As Long, ByVal cb As Long, ByRef cbNeeded As Long) As Long
Public Declare Function GetModuleFileNameExA Lib "PSAPI.DLL" (ByVal hProcess As Long, ByVal hModule As Long, ByVal ModuleName As String, ByVal nSize As Long) As Long
Public Declare Function EnumProcessModules Lib "PSAPI.DLL" (ByVal hProcess As Long, ByRef lphModule As Long, ByVal cb As Long, ByRef cbNeeded As Long) As Long
Public Declare Function CreateToolhelp32Snapshot Lib "kernel32" (ByVal dwFlags As Long, ByVal th32ProcessID As Long) As Long
Public Declare Function GetVersionExA Lib "kernel32" (lpVersionInformation As OSVERSIONINFO) As Integer
Public Declare Function SetTimer Lib "user32" (ByVal hwnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, ByVal lpTimerFunc As Long) As Long
Public Declare Function KillTimer Lib "user32" (ByVal hwnd As Long, ByVal nIDEvent As Long) As Long
Public Declare Sub GlobalMemoryStatus Lib "kernel32" (lpBuffer As MEMORYSTATUS)



Public Const PROCESS_QUERY_INFORMATION = 1024
Public Const PROCESS_VM_READ = 16
Public Const MAX_PATH = 260
Public Const STANDARD_RIGHTS_REQUIRED = &HF0000
Public Const SYNCHRONIZE = &H100000
Public Const PROCESS_ALL_ACCESS = &H1F0FFF
Public Const TH32CS_SNAPPROCESS = &H2&
Public Const hNull = 0
Public Const WIN95_System_Found = 1
Public Const WINNT_System_Found = 2
Public Const Default_Log_Size = 10000000
Public Const Default_Log_Days = 0
Public Const SPECIFIC_RIGHTS_ALL = &HFFFF
Public Const STANDARD_RIGHTS_ALL = &H1F0000


Type MEMORYSTATUS
dwLength As Long
dwMemoryLoad As Long
dwTotalPhys As Long
dwAvailPhys As Long
dwTotalPageFile As Long
dwAvailPageFile As Long
dwTotalVirtual As Long
dwAvailVirtual As Long
End Type


Type PROCESS_MEMORY_COUNTERS
cb As Long
PageFaultCount As Long
PeakWorkingSetSize As Long
WorkingSetSize As Long
QuotaPeakPagedPoolUsage As Long
QuotaPagedPoolUsage As Long
QuotaPeakNonPagedPoolUsage As Long
QuotaNonPagedPoolUsage As Long
PagefileUsage As Long
PeakPagefileUsage As Long
End Type


Public Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long ' This process
th32DefaultHeapID As Long
th32ModuleID As Long ' Associated exe
cntThreads As Long
th32ParentProcessID As Long ' This process's parent process
pcPriClassBase As Long ' Base priority of process threads
dwFlags As Long
szExeFile As String * 260 ' MAX_PATH
End Type


Public Type OSVERSIONINFO
dwOSVersionInfoSize As Long
dwMajorVersion As Long
dwMinorVersion As Long
dwBuildNumber As Long
dwPlatformId As Long '1 = Windows 95.
'2 = Windows NT
szCSDVersion As String * 128
End Type
</code>

Fortsätning från ovan

<code>
Public Function GetProcesses(ByVal EXEName As String)

Dim booResult As Boolean
Dim lngLength As Long
Dim lngProcessID As Long
Dim strProcessName As String
Dim lngSnapHwnd As Long
Dim udtProcEntry As PROCESSENTRY32
Dim lngCBSize As Long 'Specifies the size, In bytes, of the lpidProcess array
Dim lngCBSizeReturned As Long 'Receives the number of bytes returned
Dim lngNumElements As Long
Dim lngProcessIDs() As Long
Dim lngCBSize2 As Long
Dim lngModules(1 To 200) As Long
Dim lngReturn As Long
Dim strModuleName As String
Dim lngSize As Long
Dim lngHwndProcess As Long
Dim lngLoop As Long
Dim b As Long
Dim c As Long
Dim e As Long
Dim d As Long
Dim pmc As PROCESS_MEMORY_COUNTERS
Dim lret As Long
Dim strProcName2 As String
Dim strProcName As String

'Turn on Error handler
On Error GoTo Error_handler

booResult = False

EXEName = UCase$(Trim$(EXEName))
lngLength = Len(EXEName)

'ProcessInfo.bolRunning = False

Select Case getVersion()
'I'm not bothered about windows 95/98 becasue this class probably wont be used on it anyway.
Case WIN95_System_Found 'Windows 95/98

Case WINNT_System_Found 'Windows NT

lngCBSize = 8 ' Really needs To be 16, but Loop will increment prior to calling API
lngCBSizeReturned = 96

Do While lngCBSize <= lngCBSizeReturned
DoEvents
'Increment Size
lngCBSize = lngCBSize * 2
'Allocate Memory for Array
ReDim lngProcessIDs(lngCBSize / 4) As Long
'Get Process ID's
lngReturn = EnumProcesses(lngProcessIDs(1), lngCBSize, lngCBSizeReturned)
Loop

'Count number of processes returned
lngNumElements = lngCBSizeReturned / 4
'Loop thru each process

For lngLoop = 1 To lngNumElements
DoEvents

'Get a handle to the Process and Open
lngHwndProcess = OpenProcess(PROCESS_QUERY_INFORMATION Or PROCESS_VM_READ, 0, lngProcessIDs(lngLoop))

If lngHwndProcess <> 0 Then
'Get an array of the module handles for the specified process
lngReturn = EnumProcessModules(lngHwndProcess, lngModules(1), 200, lngCBSize2)

'If the Module Array is retrieved, Get the ModuleFileName
If lngReturn <> 0 Then

'Buffer with spaces first to allocate memory for byte array
strModuleName = Space(MAX_PATH)

'Must be set prior to calling API
lngSize = 500

'Get Process Name
lngReturn = GetModuleFileNameExA(lngHwndProcess, lngModules(1), strModuleName, lngSize)

'Remove trailing spaces
strProcessName = Left(strModuleName, lngReturn)

'Check for Matching Upper case result
strProcessName = UCase$(Trim$(strProcessName))

strProcName2 = GetElement(Trim(Replace(strProcessName, Chr$(0), "")), "\", 0, 0, GetNumElements(Trim(Replace(strProcessName, Chr$(0), "")), "\") - 1)

If strProcName2 = EXEName Then

'Get the Site of the Memory Structure
pmc.cb = LenB(pmc)

lret = GetProcessMemoryInfo(lngHwndProcess, pmc, pmc.cb)

Debug.Print EXEName & "::" & CStr(pmc.WorkingSetSize / 1024)

End If
End If
End If
'Close the handle to this process
lngReturn = CloseHandle(lngHwndProcess)
DoEvents
Next

End Select

IsProcessRunning_Exit:

'Exit early to avoid error handler
Exit Function
Error_handler:
Err.Raise Err, Err.Source, "ProcessInfo", Error
Resume Next
End Function


Private Function getVersion() As Long

Dim osinfo As OSVERSIONINFO
Dim retvalue As Integer

osinfo.dwOSVersionInfoSize = 148
osinfo.szCSDVersion = Space$(128)
retvalue = GetVersionExA(osinfo)
getVersion = osinfo.dwPlatformId

End Function


Private Function StrZToStr(s As String) As String
StrZToStr = Left$(s, Len(s) - 1)
End Function



Public Function GetElement(ByVal strList As String, ByVal strDelimiter As String, ByVal lngNumColumns As Long, ByVal lngRow As Long, ByVal lngColumn As Long) As String

Dim lngCounter As Long

' Append delimiter text to the end of the list as a terminator.
strList = strList & strDelimiter

' Calculate the offset for the item required based on the number of columns the list
' 'strList' has i.e. 'lngNumColumns' and from which row the element is to be
' selected i.e. 'lngRow'.
lngColumn = IIf(lngRow = 0, lngColumn, (lngRow * lngNumColumns) + lngColumn)

' Search for the 'lngColumn' item from the list 'strList'.
For lngCounter = 0 To lngColumn - 1

' Remove each item from the list.
strList = Mid$(strList, InStr(strList, strDelimiter) + Len(strDelimiter), Len(strList))

' If list becomes empty before 'lngColumn' is found then just
' return an empty string.
If Len(strList) = 0 Then
GetElement = ""
Exit Function
End If

Next lngCounter

' Return the sought list element.
GetElement = Left$(strList, InStr(strList, strDelimiter) - 1)

End Function


''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'Function GetNumElements (ByVal strList As String,
' ByVal strDelimiter As String)
' As Integer
'
' strList = The element list.
' strDelimiter = The delimiter by which the elements in
' 'strList' are seperated.
'
' The function returns an integer which is the count of the
' number of elements in 'strList'.
'
' Author: Roger Taylor
'
' Date:26/12/1998
'
' Additional Information:
'
' Revision History:
'
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

Public Function GetNumElements(ByVal strList As String, ByVal strDelimiter As String) As Integer

Dim intElementCount As Integer

' If no elements in the list 'strList' then just return 0.
If Len(strList) = 0 Then
GetNumElements = 0
Exit Function
End If

' Append delimiter text to the end of the list as a terminator.
strList = strList & strDelimiter

' Count the number of elements in 'strlist'
While InStr(strList, strDelimiter) > 0
intElementCount = intElementCount + 1
strList = Mid$(strList, InStr(strList, strDelimiter) + 1, Len(strList))
Wend

' Return the number of elements in 'strList'.
GetNumElements = intElementCount

End Function
</code>

TACK!! :-)

<b>// Qez</b>

>Som jag skrev i min fråga så ville jag veta hur man ser
>minnesåtgången "via VB", tre-knapps-lösningen känner jag också till! :-)

Ber om ursäkt, missade visst det i frågan... Tyckte de verkade lite konstigt att du fråga det. Att man inte lär sig att läsa en gång till när man tycker något verkar knstig...;)

/Johan

Ingen fara JohanD, denna gång var det inte frågan i ett prov du svarade på! ;-)

Fick i alla fall hjälp till slut - tyvärr visade det sig (som vanligt) att jag ovh min kollega nu inte HINNER implementera den delen i systemet, andra saker bråskar mer.... men vi har sparat undan hjälpkoden ovan... Tack Teed!

// Qez