System.InvalidOperationException 在 Mono 上编译 ASP.NET 应用程序

Question

这是我在 Mono 中启动 ASP.NET 应用程序时遇到的错误：

System.InvalidOperationException: The process must exit before getting the requested information.
  at System.Diagnostics.Process.get_ExitCode () [0x00044] in /usr/src/mono-2.6.3/mcs/class/System/System.Diagnostics/Process.cs:149 
  at (wrapper remoting-invoke-with-check) System.Diagnostics.Process:get_ExitCode ()
  at Mono.CSharp.CSharpCodeCompiler.CompileFromFileBatch (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x001ee] in /usr/src/mono-2.6.3/mcs/class/System/Microsoft.CSharp/CSharpCodeCompiler.cs:267 
  at Mono.CSharp.CSharpCodeCompiler.CompileAssemblyFromFileBatch (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x00011] in /usr/src/mono-2.6.3/mcs/class/System/Microsoft.CSharp/CSharpCodeCompiler.cs:156 
  at System.CodeDom.Compiler.CodeDomProvider.CompileAssemblyFromFile (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x00014] in /usr/src/mono-2.6.3/mcs/class/System/System.CodeDom.Compiler/CodeDomProvider.cs:119 
  at System.Web.Compilation.AssemblyBuilder.BuildAssembly (System.Web.VirtualPath virtualPath, System.CodeDom.Compiler.CompilerParameters options) [0x0022f] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/AssemblyBuilder.cs:804 
  at System.Web.Compilation.AssemblyBuilder.BuildAssembly (System.Web.VirtualPath virtualPath) [0x00000] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/AssemblyBuilder.cs:730 
  at System.Web.Compilation.BuildManager.GenerateAssembly (System.Web.Compilation.AssemblyBuilder abuilder, System.Web.Compilation.BuildProviderGroup group, System.Web.VirtualPath vp, Boolean debug) [0x00254] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:624 
  at System.Web.Compilation.BuildManager.BuildInner (System.Web.VirtualPath vp, Boolean debug) [0x0011c] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:411 
  at System.Web.Compilation.BuildManager.Build (System.Web.VirtualPath vp) [0x00050] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:356 
  at System.Web.Compilation.BuildManager.GetCompiledType (System.Web.VirtualPath virtualPath) [0x0003a] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:803 
  at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath (System.Web.VirtualPath virtualPath, System.Type requiredBaseType) [0x0000c] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:500 
  at System.Web.UI.PageParser.GetCompiledPageInstance (System.String virtualPath, System.String inputFile, System.Web.HttpContext context) [0x0001c] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.UI/PageParser.cs:161 
  at System.Web.UI.PageHandlerFactory.GetHandler (System.Web.HttpContext context, System.String requestType, System.String url, System.String path) [0x00000] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.UI/PageHandlerFactory.cs:45 
  at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url, Boolean ignoreContextHandler) [0x00055] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web/HttpApplication.cs:1643 
  at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url) [0x00000] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web/HttpApplication.cs:1624 
  at System.Web.HttpApplication+<Pipeline>c__Iterator2.MoveNext () [0x0075f] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web/HttpApplication.cs:1259 

我查看了stacktrace指示的源代码，即：CSharpCodeCompiler.cs:267

mcs.WaitForExit();
result.NativeCompilerReturnValue = mcs.ExitCode; //this throws the exception

我不知道这是 Mono 中的一个错误，还是我的应用程序正在做不应该做的事情。

一个简单的“Hello World”应用程序表明 Mono 已正确安装并正常工作，只是我的应用程序导致此异常被抛出。

希望一些开明的人对此问题有更多了解

我在 CentOS 5.4 服务器上运行 Apache + mod_mono 2.6.3。

简单的“Hello World”和我的应用程序之间的区别似乎在于，Global.asax 的 Application_Start() 中有大量的东西 >。有打开（和关闭）的 TCP 套接字，产生了数十个新线程（大约 80 个），并且启动和关闭了各种服务。在普通的 Windows + IIS 服务器中，应用程序最多需要 30 秒才能启动。为什么这会对 Mono 产生影响？

编辑：

有趣的是，规避此问题的一种方法是将所有代码从 Application_Start 移动到一个单独的异步进程中：

void Application_Start()
{
 var t = new System.Threading.Thread(new ThreadStart(this.Async_Application_Start));
 t.Start();
}

void Async_Application_Start()
{
   ... Lots of stuff going on here..

   log('Async Application Start is done!'); // this actually gets logged, so the code DOES execute and end
}

Answer 1

尝试查看this的帖子。