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Get-PSCallStack

  • Reference
Module:
Microsoft.PowerShell.Utility

Displays the current call stack.

Syntax

Get-PSCallStack []

Description

The Get-PSCallStack cmdlet displays the current call stack.

Although it is designed to be used with the Windows PowerShelldebugger, you can use this cmdlet to display the call stack in a script or function outside of the debugger.

To run a Get-PSCallStack command while in the debugger, type k or Get-PSCallStack.

Examples

Example 1: Get the call stack for a function

PS C:\> function my-Alias {
$p = $args[0]
Get-Alias | where {$_.definition -like "*$p"} | format-table definition, name -auto
}
PS C:\ps-test> Set-PSBreakpoint -Command My-Alias
Command    : my-alias
Action     :
Enabled    : True
HitCount   : 0
Id         : 0
Script     : prompt PS C:\> my-alias Get-Content

Entering debug mode. Use h or ? for help.
Hit Command breakpoint on 'prompt:my-alias'
my-alias get-content
[DBG]: PS C:\ps-test> s
$p = $args[0]
DEBUG: Stepped to ':    $p = $args[0]    '
[DBG]: PS C:\ps-test> s
get-alias | Where {$_.Definition -like "*$p*"} | format-table Definition,
[DBG]: PS C:\ps-test>get-pscallstack

Name        CommandLineParameters         UnboundArguments              Location
----        ---------------------         ----------------              --------
prompt      {}                            {}                            prompt
my-alias    {}                            {get-content}                 prompt
prompt      {}                            {}                            prompt PS C:\> [DBG]: PS C:\ps-test> o
Definition  Name
----------  ----
Get-Content gc
Get-Content cat
Get-Content type

This command uses the Get-PSCallStack cmdlet to display the call stack for My-Alias, a simple function that gets the aliases for a cmdlet name.

The first command enters the function at the Windows PowerShell prompt. The second command uses the Set-PSBreakpoint cmdlet to set a breakpoint on the My-Alias function. The third command uses the My-Alias function to get all of the aliases in the current session for the Get-Content cmdlet.

The debugger breaks in at the function call. Two consecutive step-into (s) commands begin executing the function line by line. Then, a33 Get-PSCallStack command is used to retrieve the call stack.

The final command is a Step-Out command (o) that exits the debugger and continues executing the script to completion.

Inputs

None

You cannot pipe objects to this cmdlet.

Outputs

CallStackFrame

Get-PSCallStack returns an object that represents the items in the call stack.