Tests/MutexTest.ps1
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[CmdletBinding()] param( [int]$NestedNum ) #region Init #region local functions function Get-LocalDefaultVariables { [CmdletBinding(SupportsShouldProcess = $False)] param( [parameter(Position=0,mandatory=$true)] $CallerInvocation, [switch]$defineNew, [switch]$overWriteExisting ) foreach($settingsFile in (Get-SettingsFiles $CallerInvocation ".json")) { if (Test-Path $settingsFile) { Write-Verbose "Reading file: [$settingsFile]" $DefaultParamters = Get-Content -Path $settingsFile -Encoding UTF8 | ConvertFrom-Json ForEach($prop in $DefaultParamters | Get-Member -MemberType NoteProperty) { if (($prop.Name).IndexOf(':') -eq -1) { $key=$prop.Name $var = Get-Variable $key -ErrorAction SilentlyContinue $value = $DefaultParamters.($prop.Name) if (!$var) { if ($defineNew) { Write-Verbose "New Var: $key" if ($value.GetType().Name -eq "String" -and $value.SubString(0,1) -eq '(') { $var = New-Variable -Name $key -Value (Invoke-Expression $Value) -Scope 1 } else { $var = New-Variable -Name $key -Value $value -Scope 1 } } } else { #We only overwrite non-set values if not forced if (!($var.Value) -or $overWriteExisting) { try { Write-Verbose "Var: $key" if ($value.GetType().Name -eq "String" -and $value.SubString(0,1) -eq '(') { $var.Value = Invoke-Expression $value } else { $var.Value = $value } } Catch { $ex = $PSItem $ex.ErrorDetails = "Err adding $key from $settingsFile. " + $PSItem.Exception.Message throw $ex } } } } } } else { Write-Verbose "File not found: [$settingsFile]" } } } #endregion Remove-Module PSJumpStart Import-Module PSJumpStart -Force -MinimumVersion 1.2.0 #Retreive variables for this script (overwrite input arguments with -overWriteExisting). Get-LocalDefaultVariables -CallerInvocation $MyInvocation #Get default paramters when calling functions (for example std-adserver) $PSDefaultParameterValues = Get-GlobalDefaultsFromJsonFiles $MyInvocation #endregion Msg "Session $NestedNum - Start Execution" #NOTE: Start two PS-windows 4 better testing #Same mutex id for all instances $MutexId = "de9a280d-ce61-4eca-adba-70332a68e065" #Create or wait for mutex Msg "Session $NestedNum - Wait for mutex release" $mutex = Wait-OnMutex $MutexId -WaitCycleCount 100 -WaitTimeMilliseconds 1000 #region Sensitive code!! May only run one instance at a time! if ($NestedNum -lt 1) { for ($i = 1; $i -lt 6; $i++) { Msg "Session $NestedNum - Call myself with argument -NestedNum $i" & $MyInvocation.MyCommand.Definition -NestedNum $i } } else { Msg "Session $NestedNum - wait 3 seconds" Start-Sleep -Seconds 3 } #endregion Msg "Session $NestedNum - Release Mutex and cleanup last error" Unlock-Mutex -MutexId $MutexId $Error.RemoveAt(0) Msg "Session $NestedNum - End Execution" |