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Pierre-Emmanuel Dautreppe
Community Member
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Hello
I have this error when I mix several aspect :
"AccessViolationException : Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
I am currently mixing 3 aspects. When I comment one of those it works correctly.
First I will inject an interface on an object :
public interface IObservable { }
[Serializable]
internal class ObservableImplementation : IObservable
{
}
[Serializable]
internal class ObservableAttribute : CompositionAspect
{
public override Type GetPublicInterface(Type containerType)
{
return typeof(IObservable);
}
public override object CreateImplementationObject(InstanceBoundLaosEventArgs eventArgs)
{
return new ObservableImplementation();
}
public override CompositionAspectOptions GetOptions()
{
CompositionAspectOptions options = base.GetOptions();
options |= CompositionAspectOptions.GenerateImplementationAccessor;
return options;
}
}
I also want to inject some code in my property setters so I have declared the following aspect :
[Serializable]
[MulticastAttributeUsage(MulticastTargets.Method, AllowExternalAssemblies = true, Inheritance = MulticastInheritance.Multicast)]
internal partial class TrackPropertyChangesAttribute : OnMethodBoundaryAspect
{
public override bool CompileTimeValidate(MethodBase method)
{
return method.Name.StartsWith("set_");
}
}
And I set these aspects to my object :
[Observable]
[Serializable]
[TrackPropertyChanges]
public abstract class ObjetObservable
{
}
Finally I decalre another aspect that will inject a new field in my classes (but that does nothing for now):
[Serializable]
[AttributeUsage(AttributeTargets.Field, AllowMultiple = false)]
[MulticastAttributeUsage(MulticastTargets.Field)]
[RequirePostSharp("InjectFieldLoadedPlugin", "InjectFieldLoadedTask")]
public class LazyLoadingAttribute : CompoundAspect
{
public override void ProvideAspects(object element, LaosReflectionAspectCollection collection)
{
collection.AddAspect(element, new ImplementInjectFieldAspect());
}
}
<?xml version="1.0" encoding="utf-8" ?>
<PlugIn xmlns="http://schemas.postsharp.org/1.0/configuration">
<SearchPath Directory="bin/{$Configuration}"/>
<TaskType Name="InjectFieldLoadedTask" Implementation="Framework.Data.DataAccessLayer.Aspects.LazyLoading.InjectFieldLoadedTask, ConsoleApplication1" />
</PlugIn>
[Serializable]
internal class ImplementInjectFieldAspect : ILaosFieldLevelAspect
{
void ILaosFieldLevelAspect.RuntimeInitialize(FieldInfo field) { }
}
internal class InjectFieldLoadedTask : Task, ILaosAspectWeaverFactory
{
LaosAspectWeaver ILaosAspectWeaverFactory.CreateAspectWeaver(AspectTargetPair aspectSemantic)
{
if ( aspectSemantic.IsDerivedFrom(typeof(ImplementInjectFieldAspect)))
return new InjectFieldLoadedWeaver();
return null;
}
}
internal class InjectFieldLoadedWeaver : FieldLevelAspectWeaver
{
public InjectFieldLoadedWeaver() : base(null) { }
public override void Implement()
{
}
}
Note that I want my attribute to be a Compound because I will in the future add another aspect in it.
Note also that when I was having all my "code generation" code in my aspects, I could see that my classes where correcty processed and updated.
Finally I add a versy simple code :
public class UnitTest1
{
static int Main(string[] args)
{
var objet = new MonDossierAvecUnPret_Observable();
objet.AutrePropriete = 15;
return 0;
}
public class MonDossierAvecUnPret_Observable : ObjetObservable
{
public int AutrePropriete { get; set; }
[LazyLoading]
public MonPretObservable Pret;
}
public class MonPretObservable : ObjetObservable { }
}
And I get the exception when I run it on my constructor. The exception comes from the InitializeAspect method.
In my production code, it was coming from <>AspectsImplementationDetails_1..cctor.
Do you have any idea of what's happening ?
For info, I was using the 1.5.6.690 but I have the same behavior with 1.5.6.761
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Gael Fraiteur
SharpCrafters
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What is the full exception stack?
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Pierre-Emmanuel Dautreppe
Community Member
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Gael Fraiteur
SharpCrafters
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Ah it was at runtime, not build time.
Try to attach a debugger and catch any exception to see what happens.
-g
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Pierre-Emmanuel Dautreppe
Community Member
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Yes sorry, at runtime.
I cannot get any error.
In VS, I need to go in assembler code to see where it fails and I cannot get a more precise error.
I have tried to use Deblector to debug in the reflector but I'm not so used to this tool and I have no more precised error.
I continue to investigate
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Gael Fraiteur
SharpCrafters
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Yes, but if you can break into the debugger, you can see the stack.
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Pierre-Emmanuel Dautreppe
Community Member
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Not really no..?
The only thing I can get in my code is
"{"The type initializer for '<>AspectsImplementationDetails_1' threw an exception."}"
when calling one of my aspected property.
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Gael Fraiteur
SharpCrafters
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So I don't know. You can submit a repro to the issue tracker and i'll have a look.
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Pierre-Emmanuel Dautreppe
Community Member
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OK I have attached the solution.
<!-- m --><a class="postlink" href="http://www.postsharp.org/tracker/view.php?id=424">http://www.postsharp.org/tracker/view.php?id=424</a><!-- m -->
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Pierre-Emmanuel Dautreppe
Community Member
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Hello Gaël,
Have you been able to have a look to this problem ?
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Gael Fraiteur
SharpCrafters
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