Re: [ADVANCED-DOTNET] Adding a custom attribute to a type
I am reading the documentation suggested and it isn't required to run under profiler since you can read and add new MetaData elements starting from an instance of IMetaDataDispenser. Hm, you said you wanted to add the attribute at runtime. Did you find a way to get the Dispenser interface of the runtime so you can access the CLR's internal data structures? Because if not, the dispenser is more of a static tool. It seems possible, but I continue to investigate. From the IMetaDataDispenser I can get IMetaDataEmit (through OpenScope method) and then add the custom attribute. I'm working on and I will say here how the app works Thanks, Pierre === This list is hosted by DevelopMentor® http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com
Re: [ADVANCED-DOTNET] Adding a custom attribute to a type
Not possible to my knowledge. What COULD work is that the type implements cutom type and returns an instance of the attribute when asked for - BUT - the normal mechanism uses reflection, and it is not possible to add an attribute to this at runtime. Regards Thomas Tomiczek THONA Consulting Ltd. (Microsoft MVP C#/.NET) -Original Message- From: Pierre [mailto:[EMAIL PROTECTED] Sent: Montag, 24. März 2003 11:11 To: [EMAIL PROTECTED] Subject: [ADVANCED-DOTNET] Adding a custom attribute to a type Hello, I have an assembly containing a Type and I need to add an attribute to a method of that type at run-time. I tryied to look inside System.Reflection.Emit but I didn't found the way of adding the custom attribute of an already created type. Someone suggested that there are some unmanaged APIs to do that but I didn't found any document talking about them. Thanks for any help, Pierre === This list is hosted by DevelopMentor® http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com === This list is hosted by DevelopMentor® http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com
Re: [ADVANCED-DOTNET] Adding a custom attribute to a type
This is a very bad solution under most circumstances - NORMALLY you would want your program not to run under the profiler. I face similar limitations in other situations (the need to replace a method's bytecode at load time), and I found having the profiler running during program run not to be acceptable. Regards Thomas Tomiczek THONA Consulting Ltd. (Microsoft MVP C#/.NET) -Original Message- From: Schmied Fabian [mailto:[EMAIL PROTECTED] Sent: Montag, 24. März 2003 13:04 To: [EMAIL PROTECTED] Subject: Re: [ADVANCED-DOTNET] Adding a custom attribute to a type You can write an unmanaged profiler that adds the attribute at load time. Have a look at Profiling.doc and Metadata Unmanaged.doc/Assembly Metadata Unmanaged.doc in your FrameworkSDK\Tool Developers Guide\Docs folder. You will have to: Write a COM component implementing ICorProfilerCallback Intercept the ModuleLoadFinished or ClassLoadFinished events Get the IMetaDataAssemblyEmit and IMetaDataEmit interfaces for the module you want to manipulate Add a MemberRef to the attribute's constructor (and probably an AssemblyRef and TypeRef as well) Finally add the custom attribute This is just a rough outline, so be sure to read the documents I mentioned. Fabian Schmied -Ursprüngliche Nachricht- Von: Pierre [mailto:[EMAIL PROTECTED] Gesendet: Mo 24.03.2003 11:10 An: [EMAIL PROTECTED] Cc: Betreff: [ADVANCED-DOTNET] Adding a custom attribute to a type Hello, I have an assembly containing a Type and I need to add an attribute to a method of that type at run-time. I tryied to look inside System.Reflection.Emit but I didn't found the way of adding the custom attribute of an already created type. Someone suggested that there are some unmanaged APIs to do that but I didn't found any document talking about them. Thanks for any help, Pierre === This list is hosted by DevelopMentor® http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com
Re: [ADVANCED-DOTNET] Adding a custom attribute to a type
You are right, it is a limitation in that 1) you can only use one profiler at a time 2) attaching the profiler is somewhat tedious 3) the unmanaged APIs are less than friendly to be used. But so far it is the only solution to runtime-manipulation of existing code and metadata (unless I am missing something). Does anyone know, why exactly it isn't possible to turn a loaded assembly/module/type into a dynamic assembly/module/type? Also, if it were possible to implement a custom loader, life would be much easier regarding runtime code extension. Fabian Schmied -Ursprngliche Nachricht- Von:Thomas Tomiczek [mailto:[EMAIL PROTECTED] Gesendet: Mo 24.03.2003 14:04 An: [EMAIL PROTECTED] Cc: Betreff:Re: [ADVANCED-DOTNET] Adding a custom attribute to a type This is a very bad solution under most circumstances - NORMALLY you would want your program not to run under the profiler. I face similar limitations in other situations (the need to replace a method's bytecode at load time), and I found having the profiler running during program run not to be acceptable. Regards Thomas Tomiczek THONA Consulting Ltd. (Microsoft MVP C#/.NET) === This list is hosted by DevelopMentor http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com
Re: [ADVANCED-DOTNET] Adding a custom attribute to a type
Hello, I am reading the documentation suggested and it isn't required to run under profiler since you can read and add new MetaData elements starting from an instance of IMetaDataDispenser. Thanks, Pierre This is a very bad solution under most circumstances - NORMALLY you would want your program not to run under the profiler. I face similar limitations in other situations (the need to replace a method's bytecode at load time), and I found having the profiler running during program run not to be acceptable. Regards Thomas Tomiczek THONA Consulting Ltd. (Microsoft MVP C#/.NET) -Original Message- From: Schmied Fabian [mailto:[EMAIL PROTECTED] Sent: Montag, 24. März 2003 13:04 To: [EMAIL PROTECTED] Subject: Re: [ADVANCED-DOTNET] Adding a custom attribute to a type You can write an unmanaged profiler that adds the attribute at load time. Have a look at Profiling.doc and Metadata Unmanaged.doc/Assembly Metadata Unmanaged.doc in your FrameworkSDK\Tool Developers Guide\Docs folder. You will have to: Write a COM component implementing ICorProfilerCallback Intercept the ModuleLoadFinished or ClassLoadFinished events Get the IMetaDataAssemblyEmit and IMetaDataEmit interfaces for the module you want to manipulate Add a MemberRef to the attribute's constructor (and probably an AssemblyRef and TypeRef as well) Finally add the custom attribute This is just a rough outline, so be sure to read the documents I mentioned. Fabian Schmied -Ursprüngliche Nachricht- Von: Pierre [mailto:[EMAIL PROTECTED] Gesendet: Mo 24.03.2003 11:10 An: [EMAIL PROTECTED] Cc: Betreff: [ADVANCED-DOTNET] Adding a custom attribute to a type Hello, I have an assembly containing a Type and I need to add an attribute to a method of that type at run-time. I tryied to look inside System.Reflection.Emit but I didn't found the way of adding the custom attribute of an already created type. Someone suggested that there are some unmanaged APIs to do that but I didn't found any document talking about them. Thanks for any help, Pierre === This list is hosted by DevelopMentor® http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com === This list is hosted by DevelopMentor® http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com
Re: [ADVANCED-DOTNET] Adding a custom attribute to a type
I am reading the documentation suggested and it isn't required to run under profiler since you can read and add new MetaData elements starting from an instance of IMetaDataDispenser. Hm, you said you wanted to add the attribute at runtime. Did you find a way to get the Dispenser interface of the runtime so you can access the CLR's internal data structures? Because if not, the dispenser is more of a static tool. Fabian === This list is hosted by DevelopMentor® http://www.develop.com You may be interested in Guerrilla .NET, 24 March 2003, in London and Boston http://www.develop.com/courses/gdotnet View archives and manage your subscription(s) at http://discuss.develop.com
