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我正在 PowerShell 中编写一个 PowerShell 模块，它必须重定向程序集绑定。bindingRedirect我使用in没有问题，powershell_ise.exe.config但我认为这对于我想要分发的模块来说是不可接受的，所以我寻找其他方式并遇到了AppDomain.CurrentDomain.AssemblyResolve。

我目前在我的.psm1文件顶部使用它：

function Resolve-AssemblyRedirect {
    PARAM ([object]$sender, [System.ResolveEventArgs]$e)
    PROCESS {
        $requestedName = New-Object System.Reflection.AssemblyName $e.Name
        if ($requestedName.Name -eq "System.Net.Http.Primitives") {
            return [System.Reflection.Assembly]::LoadFrom("$PSScriptRoot\Assemblies\System.Net.Http.Primitives.dll")
        }

        return $null
    }
}

if (-not $Global:MODULE_LOADED) {
    [AppDomain]::CurrentDomain.add_AssemblyResolve( { Resolve-AssemblyRedirect $Args[0] $Args[1] } )
    Set-Variable -Option Constant -Name MODULE_LOADED -Value $true -Scope Global
}

我可以通过在 ISE 中使用 tab-completion/Intellisense 来相当可靠地触发问题。我也在shell中看到了它。当我说相当可靠时，触发它的并不总是同一个 cmdlet。例如，在准备这个时，我使用 Get-ADUser [tab] 触发了它，最近，我键入 get-por [tab]，Intellisense 显示 Get-GPOReport，然后它挂起。

如果我注释掉以 [AppDomain]:: 开头的行并锤击制表符完成，我看不出有什么问题。

在我继续之前，我想指出我以前从未在 PowerShell 中调试过任何东西，所以在黑暗中摸索了很多。为了调试，我添加了一个带有名称和值的REG_SZto ，这让我可以选择启动 VS 2012。然后向我展示：HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebugAuto1

System.StackOverflowException 未处理

当我查看调用堆栈时，我看到：

mscorlib.dll!System.Resources.ResourceManager.GetString(string name, System.Globalization.CultureInfo culture) + 0x23c bytes    
System.Management.Automation.dll!System.Management.Automation.ErrorCategoryInfo.Ellipsize(System.Globalization.CultureInfo uiCultureInfo, string original) + 0x88 bytes 
System.Management.Automation.dll!System.Management.Automation.ScriptBlock.InvokeAsDelegateHelper(object dollarUnder, object dollarThis, object[] args) + 0x137 bytes    
[Lightweight Function]  
mscorlib.dll!System.AppDomain.OnAssemblyResolveEvent(System.Reflection.RuntimeAssembly assembly, string assemblyFullName) + 0xbc bytes  
[Native to Managed Transition]  
[Managed to Native Transition]  
mscorlib.dll!System.Reflection.RuntimeAssembly.InternalGetSatelliteAssembly(string name, System.Globalization.CultureInfo culture, System.Version version, bool throwOnFileNotFound, ref System.Threading.StackCrawlMark stackMark) + 0x3ab bytes   
mscorlib.dll!System.Resources.ManifestBasedResourceGroveler.GetSatelliteAssembly(System.Globalization.CultureInfo lookForCulture, ref System.Threading.StackCrawlMark stackMark) + 0xdd bytes   
mscorlib.dll!System.Resources.ManifestBasedResourceGroveler.GrovelForResourceSet(System.Globalization.CultureInfo culture, System.Collections.Generic.Dictionary<string,System.Resources.ResourceSet> localResourceSets, bool tryParents, bool createIfNotExists, ref System.Threading.StackCrawlMark stackMark) + 0xe2 bytes   
mscorlib.dll!System.Resources.ResourceManager.InternalGetResourceSet(System.Globalization.CultureInfo requestedCulture, bool createIfNotExists, bool tryParents, ref System.Threading.StackCrawlMark stackMark) + 0x329 bytes   
mscorlib.dll!System.Resources.ResourceManager.InternalGetResourceSet(System.Globalization.CultureInfo culture, bool createIfNotExists, bool tryParents) + 0x23 bytes    
mscorlib.dll!System.Resources.ResourceManager.GetString(string name, System.Globalization.CultureInfo culture) + 0x23c bytes    
Microsoft.PowerShell.Editor.dll!Microsoft.VisualStudio.Language.Intellisense.Implementation.CompletionSession.Commit() + 0x285 bytes    
Microsoft.PowerShell.GPowerShell.dll!Microsoft.PowerShell.Host.ISE.PowerShellTab.TabComplete(Microsoft.PowerShell.Host.ISE.ISEEditor editor, bool forward) + 0x51c bytes    
Microsoft.PowerShell.GPowerShell.dll!Microsoft.PowerShell.Host.ISE.PowerShellTab.ProcessTab(object sender, System.Windows.Input.KeyEventArgs e, Microsoft.PowerShell.Host.ISE.PowerShellTab selectedPowerShellTab) + 0x167 bytes    
Microsoft.PowerShell.GPowerShell.dll!Microsoft.Windows.PowerShell.Gui.Internal.BeforeDefaultKeyProcessor.KeyDown(System.Windows.Input.KeyEventArgs args) + 0x4a bytes   
Microsoft.PowerShell.Editor.dll!Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(object errorSource, System.Action call) + 0x26 bytes 
Microsoft.PowerShell.Editor.dll!Microsoft.VisualStudio.Text.Editor.Implementation.KeyProcessorDispatcher.Dispatch<System.Windows.Input.KeyEventArgs>(System.Action<Microsoft.VisualStudio.Text.Editor.KeyProcessor,System.Windows.Input.KeyEventArgs> action, System.Windows.Input.KeyEventArgs args) + 0x185 bytes 
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target) + 0x56 bytes  
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised) + 0x270 bytes  
PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args) + 0x14e bytes 
PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args) + 0x64 bytes   
PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea() + 0x431 bytes   
PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input) + 0xab bytes 
PresentationCore.dll!System.Windows.Interop.HwndKeyboardInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawKeyboardActions actions, int scanCode, bool isExtendedKey, bool isSystemKey, int virtualKey) + 0x124 bytes    
PresentationCore.dll!System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(ref System.Windows.Interop.MSG msg, ref bool handled) + 0x20e bytes  
PresentationCore.dll!System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(ref System.Windows.Interop.MSG msg, System.Windows.Input.ModifierKeys modifiers) + 0x213 bytes  
PresentationCore.dll!System.Windows.Interop.HwndSource.OnPreprocessMessage(object param) + 0x35e bytes  
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) + 0x5e bytes 
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler) + 0x47 bytes    
WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) + 0x2bc bytes 
WindowsBase.dll!System.Windows.Threading.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority priority, System.Delegate method, object arg) + 0x42 bytes   
PresentationCore.dll!System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(ref System.Windows.Interop.MSG msg, ref bool handled) + 0x107 bytes 
WindowsBase.dll!System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(ref System.Windows.Interop.MSG msg) + 0x4f bytes    
WindowsBase.dll!System.Windows.Threading.Dispatcher.TranslateAndDispatchMessage(ref System.Windows.Interop.MSG msg) + 0x2c bytes    
WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame) + 0x112 bytes 
PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window) + 0x17a bytes    
Microsoft.PowerShell.GPowerShell.dll!Microsoft.Windows.PowerShell.Gui.Internal.Program.ShowMainWindow(System.Collections.Generic.List<string> filesToOpen, bool mta, bool noProfile, System.Threading.SendOrPostCallback loadedCallback) + 0x1a5 bytes  
[Native to Managed Transition]  
PowerShell_ISE.exe!Microsoft.Windows.PowerShell.GuiExe.Internal.GPowerShell.Main(string[] args) + 0x4d0 bytes

我只在两行之间重复了一个部分：

mscorlib.dll!System.Resources.ResourceManager.GetString(string name, System.Globalization.CultureInfo culture) + 0x23c bytes

但这重复了很多。

我已经将它通过洗衣机几次，但我并不总是在调用堆栈中看到相同的结果。例如，有时重复部分如下所示：

mscorlib.dll!System.Resources.ResourceManager.GetString(string name, System.Globalization.CultureInfo culture) + 0x23c bytes    
System.Management.Automation.dll!System.Management.Automation.ErrorCategoryInfo.Ellipsize(System.Globalization.CultureInfo uiCultureInfo, string original) + 0x88 bytes 
System.Management.Automation.dll!System.Management.Automation.ScriptBlock.InvokeAsDelegateHelper(object dollarUnder, object dollarThis, object[] args) + 0x137 bytes    
[Lightweight Function]  
mscorlib.dll!System.AppDomain.OnAssemblyResolveEvent(System.Reflection.RuntimeAssembly assembly, string assemblyFullName) + 0xbc bytes  
[Native to Managed Transition]  
[Managed to Native Transition]  
mscorlib.dll!System.Reflection.RuntimeAssembly.InternalGetSatelliteAssembly(string name, System.Globalization.CultureInfo culture, System.Version version, bool throwOnFileNotFound, ref System.Threading.StackCrawlMark stackMark) + 0x3ab bytes   
mscorlib.dll!System.Resources.ManifestBasedResourceGroveler.GetSatelliteAssembly(System.Globalization.CultureInfo lookForCulture, ref System.Threading.StackCrawlMark stackMark) + 0xdd bytes   
mscorlib.dll!System.Resources.ManifestBasedResourceGroveler.GrovelForResourceSet(System.Globalization.CultureInfo culture, System.Collections.Generic.Dictionary<string,System.Resources.ResourceSet> localResourceSets, bool tryParents, bool createIfNotExists, ref System.Threading.StackCrawlMark stackMark) + 0xe2 bytes   
mscorlib.dll!System.Resources.ResourceManager.InternalGetResourceSet(System.Globalization.CultureInfo requestedCulture, bool createIfNotExists, bool tryParents, ref System.Threading.StackCrawlMark stackMark) + 0x329 bytes   
mscorlib.dll!System.Resources.ResourceManager.InternalGetResourceSet(System.Globalization.CultureInfo culture, bool createIfNotExists, bool tryParents) + 0x23 bytes    
mscorlib.dll!System.Resources.ResourceManager.GetString(string name, System.Globalization.CultureInfo culture) + 0x23c bytes

而重复开始之前的初始部分通常是不同的。

从一点阅读来看，似乎 LightweightFunction 可能是我的函数 Resolve-AssemblyRedirect。

难道我做错了什么？

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2 回答 2

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Without digging into the AppDomain assembly resolution stuff, I can tell that you that most likely there is a non-terminating loop in the code path represented by the repeating lines in the stack walk. Each time the code goes through the loop it eats up more stack until all the stack's been used and you get the exception with the same name as this web site.

My guess is that the change you made to the .config file causes .NET to behave badly.

Using reflector I can see the infinite loop. InvokeAsDelegateHelper calls GetContextFromTLS. GetContextFromTLS calls GetExecutionContextFromTLS. GetExecutionContextFromTLS returns null if the DefaultRunspace is null. When GetContextFromTLS gets a null back from GetExecutionContextFromTLS (among other things) it calls ErrorCategory.Ellipsize. Ellipsize reads the property ErrorPackage.Ellipsize. The ErrorPackage.Ellipsize accessor method calls ResourceManager.GetString, which restarts the loop

So it looks like the bad behavior comes from having a null DefaultRunspace. I'm not sure how that would happen if you are just using Powershell.exe to run your script. But if you are invoking Powershell from, say, C#, then you probably have a bug in your code that invokes Powershell. Either way it would probably be helpful to look on MSDN at the documentation regarding launching Powershell from a program.

HTH

于 2013-12-11T06:37:04.917 回答
0

$e.Name 不仅包含程序集名称，还包含版本信息等，如

System.IO.Abstractions, Version=2.1.0.178, Culture=neutral, PublicKeyToken=96bf224d23c43e59

所以你的名字比较和 dll 加载永远不会起作用。我昨天也遇到了同样的问题，原来是System.Management.Automation.resources.dll等一些程序集的名称比较和解析中的错误在某些情况下导致解析重试，最后崩溃了堆栈溢出。

此外，在我的情况下，在调用 add-type 之前调用 add_assemblyResolve 函数也会导致同样的问题。

于 2021-11-08T10:14:10.003 回答