Powershell 7 ->;将结果添加到数组时，函数中的 ForEach -Parallel 不会返回任何内容

Question

我需要在此函数中使用 Powershell 7 并行循环功能，但是当使用 ForEach 循环时，我无法获取结果并将其放入最后的数组中，我不明白为什么。

有什么想法吗？

Function Get-ResponseFromParallelPings($activeHops) {
    $ArrayOfObjects = @()

    $activeHops | ForEach-Object -Parallel {
        $count = 5
        $LatencyNumber = 0
        $SuccessNumber = 0
        $Answer = Test-Connection -count $count -targetname $_.Name -delay 1

        foreach ($a in $Answer) {
            $LatencyNumber += $a.Latency / $count
            if ($a.Status -eq "Success") {
                $IncreaseBy = 100 / $count
                $SuccessNumber += $IncreaseBy
            }        
        }  
        $myObject = [PSCustomObject]@{
            DestinationIP  = $_.Name
            AverageLatency = $LatencyNumber
            Success        = $SuccessNumber 
        }
        $arrayOfObjects += $myObject # <- This line does not work for me.
    }
    return $arrayOfObjects
}

Answer 1

这里的问题是并行运行的线程必须更改同一个数组。有一些方法可以实现这一点，但在这种情况下，只需从函数中发出 $myobject 就足够了。我删除了数组和将 $myObject 添加到数组的代码。

当调用该函数时，会自动创建数组，因此结果是相同的。

Function Get-ResponseFromParallelPings($activeHops) {
    $activeHops | ForEach-Object -Parallel {
        $count = 5
        $LatencyNumber = 0
        $SuccessNumber = 0
        $Answer = Test-Connection -count $count -targetname $_.Name -delay 1

        foreach ($a in $Answer) {
            $LatencyNumber += $a.Latency / $count
            if ($a.Status -eq "Success") {
                $IncreaseBy = 100 / $count
                $SuccessNumber += $IncreaseBy
            }        
        }  
        $myObject = [PSCustomObject]@{
            DestinationIP  = $_.Name
            AverageLatency = $LatencyNumber
            Success        = $SuccessNumber 
        }
        $myObject
    }
}