Watching a process.

Watching a process.

• John Hennesey

  If you write the server code you could also add a named Mutex (see MSDN Mutex class), which your server creates. When the server crashes the mutex will also die. Check the existence of that mutex in your watcher. If you come up with a really unique mutex name, that collides not as easily as process names might do.

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  SvenC

  
  

• Corngood

  Thanks for this info. I'm still kind of confused as I am just learning VB, but your help is very much appreciated. If theres more specific info you could give I would be much obliged. If not thats quite alright you've helped quite a bit already. I will mark this post as answered but if you want I wouldn't mind more information if possible.
  

• uaurgent

  GetProcessesByName returns an array of Process objects, because there can be more with the same name. Loop that array with

  for each oProc As Process in Process.GetProcessesByName("yourApp")

  ' see oProc.MainModule.ModuleName or .FileName for your process name and or path

  next

  You could use the path if you now where your app is installed to see if it is really your app.

  --
  SvenC

  
  

• Michael Herman - Parallelspace

  Do you use the term "server" for your hardware or your software If software: is your server implementes as Windows Service If yes: in the Services console open the properties of your service and configure "Recovery" to restart your service after if failed. Basically Windows gives you this process watchdog feature for free.

  --
  SvenC

  
  

• Mateusz Rajca

  Ok, but does GetProcessByName return a value like 1 if it exists
  

• Alexandre Defalque

  For anyone who may be looking for a solution to this here is the code I used. It may not be the best way to do it. But it works

  ---

  Public Class Form1

  Public proc1 As String

  Dim proc As New System.Diagnostics.Process()

  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

  timer.Interval = Integer.Parse(intBox.Text)

  timer.Enabled = True

  start()

  End Sub

  Private Sub start()

  proc1 = procBox.Text

  ' Fill-up StartInfo

  proc.StartInfo.UseShellExecute = True

  proc.StartInfo.FileName = proc1

  ' Start the process

  proc.Start()

  End Sub

  Private Sub timer_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timer.Tick

  If (proc.HasExited) Then

  start()

  End If

  End Sub

  Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

  timer.Enabled = False

  End Sub

  End Class

  
  

• venp

  OK, in your watching app use System.Diagnostics.Process.GetProcessesByName to check if your app is returned in that collection. Do that check on a regular basis e.g. with a Timer component.

  --
  SvenC

  
  

• Chrisull

  Sorry I should have been more specific. Server is refering to software and no it's not registered as a service.

  I could have it registered as one. But I would much rather understand how to do it this way.

  
  

• rolian

  I do have access to the servers code, it's in C++ though. Not exactly a pro in that either and I havent heard of the idea of mutex before.
  
• Watching a process.