[CmdletBinding()]
param()

$ErrorActionPreference = 'Stop'
$HostProcess = Get-Process -Id $PID
$HostProcess.PriorityClass = 'BelowNormal'
$HostProcess.ProcessorAffinity = [IntPtr]0xFF00
$Standalone = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '..\..'))
$Executable = Join-Path $Standalone 'bin\VoxelForgeGpuFieldStep6NearProbe.exe'
$Stdout = Join-Path $PSScriptRoot 'step6_cpu_hash_fresh_w8.stdout.log'
$Stderr = Join-Path $PSScriptRoot 'step6_cpu_hash_fresh_w8.stderr.log'
$Arguments = @('--stream-benchmark','--shape-world','--force-generate','--stream-hash','--workers=8','--clip-radius=3')
if (-not (Test-Path -LiteralPath $Executable -PathType Leaf)) { throw "Executable not found: $Executable" }

for ($Attempt = 0; $Attempt -lt 2; ++$Attempt) {
    if ($Attempt -eq 1) {
        Write-Output '0xC0000142 encountered; waiting 60 seconds before the permitted retry.'
        Start-Sleep -Seconds 60
    }
    $Child = Start-Process -FilePath $Executable -ArgumentList $Arguments -WorkingDirectory $Standalone `
        -WindowStyle Hidden -PassThru -RedirectStandardOutput $Stdout -RedirectStandardError $Stderr
    $PeakWorkingSet = 0L
    $PeakPrivate = 0L
    $OverLimit = $false
    while (-not $Child.HasExited) {
        $Child.Refresh()
        if ($Child.HasExited) { break }
        $Child.PriorityClass = 'BelowNormal'
        $Child.ProcessorAffinity = [IntPtr]0xFF00
        $PeakWorkingSet = [Math]::Max($PeakWorkingSet,$Child.WorkingSet64)
        $PeakPrivate = [Math]::Max($PeakPrivate,$Child.PrivateMemorySize64)
        if ($Child.PrivateMemorySize64 -ge 8GB) {
            $OverLimit = $true
            $Child.Kill()
            $Child.WaitForExit()
            break
        }
        Start-Sleep -Milliseconds 100
    }
    $Child.WaitForExit()
    $Child.Refresh()
    if ($Child.ExitCode -eq -1073741502 -and $Attempt -eq 0) { continue }
    if ($Child.ExitCode -eq -1073741502) { throw '0xC0000142 repeated after the one retry; stopping.' }
    if ($OverLimit) { throw 'CPU hash run stopped at the 8 GB process memory limit.' }
    $Log = Get-Content -LiteralPath $Stdout -Raw
    if ($Child.ExitCode -ne 0 -or -not $Log.Contains('[StreamFullClipmap]')) {
        throw "Hash run failed; exit=$($Child.ExitCode) stdout=$Stdout stderr=$Stderr"
    }
    Write-Output "RUN_EXIT pid=$($Child.Id) priority=BelowNormal affinity=0xFF00 peak_working_set_gb=$([Math]::Round($PeakWorkingSet/1GB,2)) peak_private_gb=$([Math]::Round($PeakPrivate/1GB,2)) exit_code=$($Child.ExitCode) stdout=$Stdout stderr=$Stderr"
    exit 0
}