Add Module.ApplyChanges

[lambdageek]

• [Mono.Debugger.Soft] add Module.ApplyChanges
• [Mono.Debugging.Soft] add SoftDebuggerSession.ApplyChanges

Related mono/mono Mono.Debugger.Soft PR: mono/mono#20889
Related dotnet/runtime PR: dotnet/runtime#49043

Contributes to dotnet/runtime#44806

[lambdageek]

@thaystg @joj

[AlexeiNaabal]

@lambdageek Could you provide some guidance about how to get the applying ModuleMirror?

The way I test hot reload is by 1. send the delta to a debug session frontend implement, 2. then pass them to ApplyChanges method with a class member which is a SoftDebuggerSession instance. This workflow is not triggered by debug event, I send the delta through named pipe.

Not finding public ways to get ModuleMirror, currently I add a custom method to SoftDebuggerSession to search current loaded AssemblyMirror for the applying one (with the assembly name that I send through named pipe).

Though this workflow worked in my test case, I'm not sure if it is the right way to retrieve the ModuleMirror, since I have to modify the debugger-lib source codes.

[lambdageek]

@AlexeiNaabal I'm not a debugger-libs expert. However, I think you get a ModuleMirror by calling ManifestModule on an AssemblyMirror. You get AssemblyMirrors by collecting them from AssemblyLoadEvents, or by calling GetAssemblies on an AppDomainMirror.

So something like vm.RootDomain.GetAssemblies().Where(am => am.GetName() == someName).First().ManifestModule

[AlexeiNaabal]

@AlexeiNaabal I'm not a debugger-libs expert. However, I think you get a ModuleMirror by calling ManifestModule on an AssemblyMirror. You get AssemblyMirrors by collecting them from AssemblyLoadEvents, or by calling GetAssemblies on an AppDomainMirror.

So something like vm.RootDomain.GetAssemblies().Where(am => am.GetName() == someName).First().ManifestModule

Thanks for your guidance, I found what I've missed immediately :)

In fact I can at least access the vm.RootDomain within my debugger front-end (which is for delivering the IDE's debug event to the debugger-lib), so I just need to move this GetAssemblies().Where process to my front-end, without touching the source code of 3rd party's library :)