Date: Sat, 07 Nov 2009 20:22:54 +0100 From: Ivan Radovanovic <rivanr@gmail.com> To: mono@FreeBSD.org Subject: Problem with patch patch-mono_metadata_filewatcher.c Message-ID: <4AF5C90E.7090501@gmail.com>
next in thread | raw e-mail | index | archive | help
Patch patch-mono_metadata_filewatcher.c breaks ASP.Net applications with mono - details can be found bellow Best Regards, Ivan -------- Original Message -------- Subject: Re: Deadlock in System.Web.Caching.Cache class Date: Sat, 07 Nov 2009 20:18:17 +0100 From: Ivan Radovanovic <rivanr@gmail.com> To: mono-devel-list@lists.ximian.com References: <4AF57E5D.4000808@gmail.com> Although this dead lock problem continues to potentially exists it seems that problem is after all OS specific - there is some weird behavior of fam/gamin reporting that bin/*.dll files are changed, causing ASP.Net runtime trying to restart application, while at the same time trying to compile *.aspx, *.ascx etc. Maybe deadlock can occur in normal conditions too (servicing some request that would need compiling of some control/page that is not compiled yet and replacing something in bin directory at the same time), but that should be rare enough :-) Regards Ivan Radovanovic napisa: > Hello, I am experiencing weird deadlock in .net applications running > latest release version of mono (2.4.2.3) on FreeBSD (I don't think it is > OS specific, and it doesn't show all the times, but still often enough > so I can trace it) > > Stack from thread 1: > at > System.Web.Compilation.BuildManager.RemoveVirtualPathFromCaches(System.Web.VirtualPath > virtualPath) > at > System.Web.Compilation.BuildManager.OnVirtualPathChanged(System.String > key, System.Object value, CacheItemRemovedReason removedReason) > at System.Web.Caching.Cache.InvokePrivateCallbacks() > at System.Web.HttpRuntime.ShutdownAppDomain(System.Object args) > ==================================================================== > Stack from thread 2: > at System.Web.Caching.Cache.Add(System.String key, System.Object > value, System.Web.Caching.CacheDependency dependencies, DateTime > absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority > priority, System.Web.Caching.CacheItemRemovedCallback onRemoveCallback) > at System.Web.Compilation.BuildManager.AddToCache(System.String > virtualPath, System.Web.Compilation.BuildProvider bp) > at > System.Web.Compilation.BuildManager.GenerateAssembly(System.Web.Compilation.AssemblyBuilder > abuilder, System.Collections.Generic.List`1 buildItems, > System.Web.VirtualPath virtualPath, BuildKind buildKind) > at > System.Web.Compilation.BuildManager.BuildAssembly(System.Web.VirtualPath > virtualPath) > at System.Web.Compilation.BuildManager.GetCompiledType(System.String > virtualPath) > at System.Web.Compilation.AspComponentFoundry+TagNameFoundry.LoadType() > at > System.Web.Compilation.AspComponentFoundry+TagNameFoundry.GetType(System.String > componentName, System.String ByRef source, System.String ByRef ns) > at > System.Web.Compilation.AspComponentFoundry.CreateComponent(System.Web.Compilation.Foundry > foundry, System.String tagName, System.String prefix, System.String tag) > at > System.Web.Compilation.AspComponentFoundry.GetComponent(System.String > tagName) > at System.Web.UI.RootBuilder.GetChildControlType(System.String > tagName, IDictionary attribs) > at System.Web.UI.ControlBuilder.CreateSubBuilder(System.String tagid, > System.Collections.Hashtable atts, System.Type childType, > System.Web.UI.TemplateParser parser, ILocation location) > at System.Web.Compilation.AspGenerator.ProcessTag(ILocation location, > System.String tagid, System.Web.Compilation.TagAttributes atts, TagType > tagtype, Boolean ByRef ignored) > at System.Web.Compilation.AspGenerator.TagParsed(ILocation location, > TagType tagtype, System.String tagid, > System.Web.Compilation.TagAttributes attributes) > at System.Web.Compilation.AspParser.OnTagParsed(TagType tagtype, > System.String id, System.Web.Compilation.TagAttributes attributes) > at System.Web.Compilation.AspParser.Parse() > at System.Web.Compilation.AspGenerator.Parse(System.IO.TextReader > reader, System.String filename, Boolean doInitParser) > at System.Web.Compilation.GenericBuildProvider`1.Parse() > at System.Web.Compilation.GenericBuildProvider`1.get_CodeCompilerType() > at > System.Web.Compilation.BuildManager.GetCodeDomProviderType(System.Web.Compilation.BuildProvider > provider) > at > System.Web.Compilation.BuildManager+BuildItem..ctor(System.Web.Compilation.BuildProvider > provider) > at > System.Web.Compilation.BuildManager.LoadBuildProviders(System.Web.VirtualPath > virtualPath, System.String virtualDir, > System.Collections.Generic.Dictionary`2 vpCache, BuildKind ByRef kind, > System.String ByRef assemblyBaseName) > at > System.Web.Compilation.BuildManager.BuildAssembly(System.Web.VirtualPath > virtualPath) > at System.Web.Compilation.BuildManager.GetCompiledType(System.String > virtualPath) > at System.Web.Compilation.AspComponentFoundry+TagNameFoundry.LoadType() > at > System.Web.Compilation.AspComponentFoundry+TagNameFoundry.GetType(System.String > componentName, System.String ByRef source, System.String ByRef ns) > at > System.Web.Compilation.AspComponentFoundry.CreateComponent(System.Web.Compilation.Foundry > foundry, System.String tagName, System.String prefix, System.String tag) > at > System.Web.Compilation.AspComponentFoundry.GetComponent(System.String > tagName) > at System.Web.UI.RootBuilder.GetChildControlType(System.String > tagName, IDictionary attribs) > at System.Web.UI.ControlBuilder.CreateSubBuilder(System.String tagid, > System.Collections.Hashtable atts, System.Type childType, > System.Web.UI.TemplateParser parser, ILocation location) > at System.Web.Compilation.AspGenerator.ProcessTag(ILocation location, > System.String tagid, System.Web.Compilation.TagAttributes atts, TagType > tagtype, Boolean ByRef ignored) > at System.Web.Compilation.AspGenerator.TagParsed(ILocation location, > TagType tagtype, System.String tagid, > System.Web.Compilation.TagAttributes attributes) > at System.Web.Compilation.AspParser.OnTagParsed(TagType tagtype, > System.String id, System.Web.Compilation.TagAttributes attributes) > at System.Web.Compilation.AspParser.Parse() > at System.Web.Compilation.AspGenerator.Parse(System.IO.TextReader > reader, System.String filename, Boolean doInitParser) > at System.Web.Compilation.GenericBuildProvider`1.Parse() > at System.Web.Compilation.GenericBuildProvider`1.get_CodeCompilerType() > at > System.Web.Compilation.BuildManager.GetCodeDomProviderType(System.Web.Compilation.BuildProvider > provider) > at > System.Web.Compilation.BuildManager+BuildItem..ctor(System.Web.Compilation.BuildProvider > provider) > at > System.Web.Compilation.BuildManager.LoadBuildProviders(System.Web.VirtualPath > virtualPath, System.String virtualDir, > System.Collections.Generic.Dictionary`2 vpCache, BuildKind ByRef kind, > System.String ByRef assemblyBaseName) > at > System.Web.Compilation.BuildManager.BuildAssembly(System.Web.VirtualPath > virtualPath) > at System.Web.Compilation.BuildManager.GetCompiledType(System.String > virtualPath) > at > System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(System.String > virtualPath, System.Type requiredBaseType) > at System.Web.UI.PageParser.GetCompiledPageInstance(System.String > virtualPath, System.String inputFile, System.Web.HttpContext context) > at System.Web.UI.PageHandlerFactory.GetHandler(System.Web.HttpContext > context, System.String requestType, System.String url, System.String path) > at System.Web.HttpApplication.GetHandler(System.Web.HttpContext > context, System.String url, Boolean ignoreContextHandler) > at System.Web.HttpApplication.GetHandler(System.Web.HttpContext > context, System.String url) > at System.Web.HttpApplication+<Pipeline>c__Iterator2.MoveNext() > at System.Web.HttpApplication.Tick() > at System.Web.HttpApplication.Start(System.Object x) > at > System.Web.HttpApplication.System.Web.IHttpHandler.ProcessRequest(System.Web.HttpContext > context) > at System.Web.HttpRuntime.Process(System.Web.HttpWorkerRequest req) > at System.Web.HttpRuntime.RealProcessRequest(System.Object o) > at System.Web.HttpRuntime.ProcessRequest(System.Web.HttpWorkerRequest > wr) > at Mono.WebServer.MonoWorkerRequest.ProcessRequest() > at > Mono.WebServer.BaseApplicationHost.ProcessRequest(Mono.WebServer.MonoWorkerRequest > mwr) > at Mono.WebServer.XSPApplicationHost.ProcessRequest(Int32 reqId, > Int64 localEPAddr, Int32 localEPPort, Int64 remoteEPAdds, Int32 > remoteEPPort, System.String verb, System.String path, System.String > queryString, System.String protocol, System.Byte[] inputBuffer, > System.String redirect, IntPtr socket, Mono.WebServer.SslInformations ssl) > at Mono.WebServer.XSPWorker.RunInternal(System.Object state) > =============================================================================== > > > As you can see there is deadlock between > System.Web.Compilation.BuildManager.AddToCache (thread 2, second item) > and System.Web.Compilation.BuildManager.GenerateAssembly (both using > lock (buildCacheLock)) and between System.Web.Caching.Cache.Add and > System.Web.Caching.Cache.InvokePrivateCallbacks() (both using lock(cache)) > > I am curious if someone is working on this bug (is this known bug?) or I > should try to fix it myself? > > Best regards, > Ivan >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4AF5C90E.7090501>