$PSCmdlet.Stopping is false when stopping

[alx9r]

Steps to reproduce

function a {
    param( [Parameter(ValueFromPipeline)]$InputObject )
    process {
        try { $InputObject }
        finally {
            [console]::WriteLine('a finally')
            [console]::WriteLine("a Stopping: $($PSCmdlet.Stopping)")
        }
    }
}
Add-Type '
    using System;
    using System.Management.Automation; 
    
    [Cmdlet("Invoke", "b")]
    public class b : Cmdlet 
    {
        [Parameter(ValueFromPipeline=true)]
        public object InputObject { get; set; }

        protected override void ProcessRecord()
        { 
            WriteObject(InputObject,true);
        }

        protected override void StopProcessing()
        {
            Console.WriteLine("b StopProcessing");
            Console.WriteLine("b Stopping: {0}",Stopping);
        }
    }' -PassThru | % Assembly | Import-Module
Set-Alias b Invoke-b

1 | a | b | % { sleep 10 } # press Ctrl-C here

Expected behavior

b StopProcessing
b Stopping: True
a finally
a Stopping: True

Actual behavior

b StopProcessing
b Stopping: True
a finally
a Stopping: False

Environment data

> $PSVersionTable

Name                           Value                                            
----                           -----                                            
PSVersion                      6.0.0                                            
PSEdition                      Core                                             
GitCommitId                    v6.0.0                                           
OS                             Microsoft Windows 6.3.9600                       
Platform                       Win32NT                                          
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                          
PSRemotingProtocolVersion      2.3                                              
SerializationVersion           1.1.0.1                                          
WSManStackVersion              3.0                                              

[powercode]

Interesting that

1 |  b | b | % { sleep 10 } # press Ctrl-C here

b StopProcessing
b Stopping: True
b StopProcessing
b Stopping: False

[powercode]

and

1 |  a | a | % { sleep 10 } # press Ctrl-C here

a finally
a Stopping: False
a finally
a Stopping: False

[alx9r]

@powercode I'm not seeing that on my computer for 1 | b | b | % { sleep 10 }. I see Stopping: True for both invocations of b:

1 | b | b | % { sleep 10 } # press Ctrl-C here
b StopProcessing
b Stopping: True
b StopProcessing
b Stopping: True

[BrucePay]

Weird. Of course it doesn't really matter what Stopping is set to in StopProcessing(). If you're in StopProcessing(), you're stopping by definition :-) (Some background: this method is called on the break handler thread, not the pipeline thread with the intent that be able to unblock the pipeline thread if it's hung doing IO or some such.)

[alx9r]

@BrucePay

Some background: this method is called on the break handler thread, not the pipeline thread with the intent that be able to unblock the pipeline thread if it's hung doing IO or some such.

Oh I see. Is that why there is no analogous stop {} block available in PSCmdlets?

Because PSCmdlets have no stop{} block, but finally{} does run on ctrl-C, I was hoping to be able to predicate certain cleanup tasks on $PSCmdlet.Stopping.

[microsoft-github-policy-service]

This issue has not had any activity in 6 months, if this is a bug please try to reproduce on the latest version of PowerShell and reopen a new issue and reference this issue if this is still a blocker for you.

[microsoft-github-policy-service]

This issue has not had any activity in 6 months, if this is a bug please try to reproduce on the latest version of PowerShell and reopen a new issue and reference this issue if this is still a blocker for you.

[microsoft-github-policy-service]

This issue has been marked as "No Activity" as there has been no activity for 6 months. It has been closed for housekeeping purposes.