GHA update for in-use handling

.github/workflows/cxx.yml

@@ -61,10 +61,10 @@ jobs:
             arch: amd64_arm64
 
     steps:
-      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Clone test repository
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           repository: walbourn/directxmathtest
           path: Tests
@@ -87,7 +87,7 @@ jobs:
 
       - name: 'Clean up'
         working-directory: ${{ github.workspace }}
-        run: Remove-Item -Path out -Recurse -Force
+        run: .\build\PurgeFolder.ps1 -Path out
 
       - name: 'Configure CMake (C++11)'
         working-directory: ${{ github.workspace }}
@@ -99,7 +99,7 @@ jobs:
 
       - name: 'Clean up'
         working-directory: ${{ github.workspace }}
-        run: Remove-Item -Path out -Recurse -Force
+        run: .\build\PurgeFolder.ps1 -Path out
 
       - name: 'Configure CMake (C++14)'
         working-directory: ${{ github.workspace }}
@@ -111,7 +111,7 @@ jobs:
 
       - name: 'Clean up'
         working-directory: ${{ github.workspace }}
-        run: Remove-Item -Path out -Recurse -Force
+        run: .\build\PurgeFolder.ps1 -Path out
 
       - name: 'Configure CMake (C++20)'
         working-directory: ${{ github.workspace }}

build/PurgeFolder.ps1

@@ -0,0 +1,59 @@
+<#
+.SYNOPSIS
+    Purges a folder once it is no longer locked.
+
+.DESCRIPTION
+    Continuously attempts to remove the specified folder. If the folder
+    is locked or in use, the script waits for a configurable interval and
+    retries until either the folder is removed or a timeout is reached.
+
+.PARAMETER Path
+    The folder to remove.
+
+.PARAMETER RetrySeconds
+    Number of seconds to wait between retry attempts.
+
+.PARAMETER TimeoutSeconds
+    Maximum number of seconds to wait before giving up.
+
+.EXAMPLE
+    .\PurgeFolder.ps1 -Path "C:\Temp\MyFolder" -Verbose
+#>
+
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true, Position = 0)]
+    [ValidateNotNullOrEmpty()]
+    [string]$Path,
+
+    [Parameter()]
+    [ValidateRange(1, 86400)]
+    [int]$RetrySeconds = 5,
+
+    [Parameter()]
+    [ValidateRange(1, 86400)]
+    [int]$TimeoutSeconds = 300
+)
+
+if (-not (Test-Path -LiteralPath $Path -PathType Container)) {
+    throw "'$Path' does not exist or is not a folder."
+}
+
+$stopTime = (Get-Date).AddSeconds($TimeoutSeconds)
+
+while (Test-Path -LiteralPath $Path -PathType Container) {
+
+    if ((Get-Date) -gt $stopTime) {
+        throw "Timed out waiting for folder '$Path' to become available after $TimeoutSeconds seconds."
+    }
+
+    try {
+        Remove-Item -LiteralPath $Path -Recurse -Force -ErrorAction Stop
+
+        Write-Verbose "Successfully purged folder '$Path'."
+    }
+    catch {
+        Write-Verbose "Folder is locked or in use. Retrying in $RetrySeconds second(s)..."
+        Start-Sleep -Seconds $RetrySeconds
+    }
+}