#requires -Version 5.1
<#
    sample_fleet.ps1
    One-shot working-set + private-bytes + virtual-bytes sample for every
    running acclient.exe. Appends to artifacts/soak/memtrace_fleet.csv.

    Usage:
        powershell -ExecutionPolicy Bypass -File bin\sample_fleet.ps1
    or schedule via ScheduleWakeup with a recurring 1500-1800s cadence.
#>
$ErrorActionPreference = 'Stop'
$root   = Split-Path -Parent $PSScriptRoot
$logDir = Join-Path $root 'artifacts\soak'
if (-not (Test-Path $logDir)) { New-Item -ItemType Directory -Path $logDir -Force | Out-Null }
$csv = Join-Path $logDir 'memtrace_fleet.csv'
if (-not (Test-Path $csv)) {
    'ts_utc,pid,start,uptime_h,ws_mb,private_mb,virtual_mb,handle_count,thread_count' |
        Out-File -FilePath $csv -Encoding utf8
}

$now   = [DateTime]::UtcNow
$procs = Get-Process -Name acclient -ErrorAction SilentlyContinue
foreach ($p in $procs) {
    $up = [math]::Round(($now - $p.StartTime.ToUniversalTime()).TotalHours, 2)
    $line = '{0:o},{1},{2:o},{3},{4},{5},{6},{7},{8}' -f $now, $p.Id,
        $p.StartTime.ToUniversalTime(), $up,
        [math]::Round($p.WorkingSet64    / 1MB, 1),
        [math]::Round($p.PrivateMemorySize64 / 1MB, 1),
        [math]::Round($p.VirtualMemorySize64 / 1MB, 1),
        $p.HandleCount, $p.Threads.Count
    Add-Content -LiteralPath $csv -Value $line
}
Write-Output ("samples={0} csv={1}" -f $procs.Count, $csv)