32 lines
1.3 KiB
PowerShell
32 lines
1.3 KiB
PowerShell
function Enter-SmailWorkspaceLock {
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param([Parameter(Mandatory = $true)][string]$Root)
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# 构建会归档 Go 嵌入资源，必须与同一源码目录的后端测试互斥。
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# 使用系统互斥量，进程异常退出后也不会留下需要手工删除的锁文件。
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$resolved = (Resolve-Path -LiteralPath $Root -ErrorAction Stop).ProviderPath
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$identity = [IO.Path]::GetFullPath($resolved).TrimEnd('\').ToUpperInvariant()
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$hash = [Security.Cryptography.SHA256]::Create()
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try {
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$digest = [BitConverter]::ToString($hash.ComputeHash([Text.Encoding]::UTF8.GetBytes($identity))).Replace('-', '')
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} finally {
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$hash.Dispose()
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}
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$mutex = [Threading.Mutex]::new($false, "Local\SmailWorkspace-$digest")
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try {
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$acquired = $false
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try {
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$acquired = $mutex.WaitOne(0)
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} catch [Threading.AbandonedMutexException] {
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# 上一个持有者异常退出时，系统已把互斥量交给当前线程。
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$acquired = $true
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}
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if (-not $acquired) {
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throw '同一工作区正在构建或执行后端测试，请等待结束后重试，避免嵌入资源被并发移动。'
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}
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return $mutex
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} catch {
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$mutex.Dispose()
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throw
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}
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}
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