Ninject Garbage Collection [closed]

问题

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Closed 8 years ago.

I am using Ninject in a n-tier application consisting of services, repositories, all wired up with the UnitOfWork pattern and Ninject. Further, I have different jobs executing in separate threads referencing those services and repositories.

Every now and again, seems at random times, I get an exception which crashes my console application executing the jobs. The exception is:

Application: Playground.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NullReferenceException
Stack:
   at Ninject.Activation.Caching.GarbageCollectionCachePruner.PruneCacheIfGarbageCollectorHasRun(System.Object)
   at System.Threading.ExecutionContext.runTryCode(System.Object)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode, CleanupCode, System.Object)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading._TimerCallback.PerformTimerCallback(System.Object)

As far as I understand this has something to do with the new Cache-and-Collection management in Ninject. However, I have not specified any Scopes for any Ninject bindins.

EDIT: Code samples:

Here is some of the code used(I believe the critical part):

    public class DefaultUnitOfWork<TObjectContext> : Provider<ObjectContext>, IUnitOfWork, IServiceUnitOfWork
        where TObjectContext : ObjectContext, new()
      {
        public DefaultUnitOfWork(){
          _kernel = new CustomKernel(new CommonRepositoryModule(), new        ServiceModule(), (NinjectModule)kernel.Get<IAmApplicationSpecificModule>());
        }
    }

I did end up checking the source before some time for another issue that I had. Basically, previously there were multiple instances of the kernel being created and not disposed so in order to ovewrite this behaviour and dispose of them I implemented IDisposable and in the I called the Dispose(bool disposing) method on the kernel.

    public void Dispose()
    {
      if (_kernel != null) _kernel.Dispose(true); 
    }

I hope that those samples are handy.

EDIT 2

I found the issue and it was completely my fault. Because of some scoping and disposing issues that I had, I modified the code so I dispose in the above mentioned way Dispose(true). This was messing up the caching mechanisms of Ninject. I re-implemented most of the code and no problem. Thanks for the ideas, though.

来源：https://stackoverflow.com/questions/6817227/ninject-garbage-collection