Public/Process/Invoke-AndWaitForProcessOpen.ps1
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function Invoke-AndWaitForProcessOpen { [CmdletBinding()] param ( [Parameter(Mandatory)] [String] $ProcessName, [Parameter(Mandatory)] [String] $Executable, [Parameter(Mandatory)] [String] $Label, [int] $Timeout = 4000 ) if($Executable -notmatch "(\.exe$|\.cmd$|\.com$|\.bat$|\.msi$)"){ throw "File must be an executable. (.exe, .cmd, .com, .bat, .msi)" } if(-not(Test-Path $Executable -PathType Leaf)){ throw "Passed executable does not exist on disk. ($Executable)" } $GetNumInstances = { (Get-Process -Name $ProcessName -ErrorAction SilentlyContinue).Count } $StartDate = Get-Date $Command = Get-Command $Executable -CommandType Application $NumInstances = & $GetNumInstances if($NumInstances -gt 0){ Write-Verbose "$Label is already open." return } else { try { & $Command } catch { throw "Error starting specified command ($Command). Details: $_" } $TimeoutDate = $StartDate.AddMilliseconds($Timeout) $TimeoutOccured = $false do { Start-Sleep -Milliseconds 300 if($TimeoutDate -gt (Get-Date)){ $TimeoutOccured = $true break } } while ((& $GetNumInstances) -gt 0) if($TimeoutOccured){ Write-Verbose "$Label didn't start within the specified -TimeoutInSeconds ($Timeout)" } else { Write-Verbose "$Label is now available." } } } |