7

I have the following code:

 public static IEngine CreateEngine()
    {
        UnityContainer container = Unity.LoadUnityContainer(DefaultStrategiesContainerName);
        IEnumerable<IStrategy> strategies = container.ResolveAll<IStrategy>();
        ITraderProvider provider = container.Resolve<ITraderProvider>();

        return new Engine(provider, new List<IStrategy>(strategies));
    }

and the config:

<unity>  <typeAliases>
<typeAlias alias="singleton" type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager, Microsoft.Practices.Unity" />
<typeAlias alias="weakRef" type="Microsoft.Practices.Unity.ExternallyControlledLifetimeManager, Microsoft.Practices.Unity" />
<typeAlias alias="Strategy" type="ADTrader.Core.Contracts.IStrategy, ADTrader.Core" />
<typeAlias alias="Trader" type="ADTrader.Core.Contracts.ITraderProvider, ADTrader.Core" />  </typeAliases>  <containers>
<container name="strategies">
  <types>
    <type type="Strategy" mapTo="ADTrader.Strategies.ThreeTurningStrategy, ADTrader.Strategies" name="1" />
    <type type="Trader" mapTo="ADTrader.MbTradingProvider.MBTradingProvider, ADTrader.MbTradingProvider" />
  </types>
</container>  </containers></unity>

I am getting the following exception:

Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "ADTrader.Core.Contracts.ITraderProvider", name = "". Exception message is: The current build operation (build key Build Key[ADTrader.MbTradingProvider.MBTradingProvider, null]) failed: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Strategy type BuildPlanStrategy, index 3) ---> Microsoft.Practices.ObjectBuilder2.BuildFailedException: The current build operation (build key Build Key[ADTrader.MbTradingProvider.MBTradingProvider, null]) failed: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. (Strategy type BuildPlanStrategy, index 3) ---> System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at MBTCOMLib.MbtComMgrClass.EnableSplash(Boolean bEnable) at ADTrader.MbTradingProvider.MBTradingProvider..ctor() at BuildUp_ADTrader.MbTradingProvider.MBTradingProvider(IBuilderContext ) at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) --- End of inner exception stack trace --- at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.Builder.BuildUp(IReadWriteLocator locator, ILifetimeContainer lifetime, IPolicyList policies, IStrategyChain strategies, Object buildKey, Object existing) at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) --- End of inner exception stack trace ---
at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) at Microsoft.Practices.Unity.UnityContainer.Resolve(Type t, String name) at Microsoft.Practices.Unity.UnityContainerBase.ResolveT at ADTrader.Engine.EngineFactory.CreateEngine()

Any idea?

1 Answer 1

2

The constructor of your MbTradingProvider.MBTradingProvider calls a method on a COM object (assuming from the name), MBTCOMLib.MbtComMgrClass.EnableSplash. This method has a bug in it, causing wrong memory address to be written.

Sign up to request clarification or add additional context in comments.

Comments

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.