getwmi timer

$Timeout = 30
$RetryInterval = 3
$wmi = $null
try
{
    $timer = [Diagnostics.Stopwatch]::StartNew()
    while (($timer.Elapsed.TotalSeconds -lt $Timeout) -and ($wmi =Get-WmiObject -ComputerName $Server -Namespace root\cimv2 -class Win32_OperatingSystem)) {
    Start-Sleep -Seconds $RetryInterval
    $totalSecs = [math]::Round($timer.Elapsed.TotalSeconds,0)
    Write-Verbose -Message "Still waiting for action to complete after [$totalSecs] seconds..."
    }
    $timer.Stop()
    if ($timer.Elapsed.TotalSeconds -gt $Timeout -and ($wmi -eq $null)) {
        throw 'Action did not complete before timeout period.'
    } else {
        Write-Verbose -Message 'Action completed before timeout period.'
    }
}
catch
{
    Write-Error -Message $_.Exception.Message
}