flashercs

powershell 有个简单的多线程方法是 workflow,但是workflow不支持完整的powershell features,且不支持pwsh 6+,例如:powershell 5.1
不支持Write-Host

workflow work1 {
    $Filenames = @("file1.txt", "file2.txt", "file3.txt", "file4.txt", "file5.txt", "file6.txt", "file7.txt", "file8.txt", "file9.txt", "file10.txt", "file11.txt")
  # workflow有很多限制
  # foreach -parallel允许同时最多开启5个线程
  foreach -parallel ($Filename in $Filenames) {
    $i=0
     "Processing $filename"
    $i=1
    #[Threading.Thread]::Sleep(100)
    Start-Sleep -Seconds 1 # Doing some work....
    $i=2
     "Processed $filename"
    $i=3
  }
  
}
[System.Diagnostics.Stopwatch]$watch = [System.Diagnostics.Stopwatch]::StartNew()
work1
$watch.Stop()
$watch.Elapsed # 耗时2.21秒
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