public Delegate GetOrCreateConstructorCall(AssembledTypeID typeID, Type delegateType, bool allowNonPublic)
{
ArgumentUtility.DebugCheckNotNull("delegateType", delegateType);
ArgumentUtility.DebugCheckTypeIsAssignableFrom("delegateType", delegateType, typeof(Delegate));
var constructionKey = new ConstructionKey(typeID, delegateType, allowNonPublic);
return(_constructorCalls.GetOrAdd(constructionKey, _createConstructorCallFunc));
}
public ConstructionKey(AssembledTypeID typeID, Type delegateType, bool allowNonPublic)
{
ArgumentUtility.DebugCheckNotNull("delegateType", delegateType);
_typeID = typeID;
_delegateType = delegateType;
_allowNonPublic = allowNonPublic;
// Pre-compute hash code.
_hashCode = EqualityUtility.GetRotatedHashCode(_typeID.GetHashCode(), delegateType, allowNonPublic);
}
private Lazy <Type> CreateAssembledType(AssembledTypeID typeID)
{
return(new Lazy <Type> (
() =>
{
var assemblyContext = _assemblyContextPool.Dequeue();
try
{
var result = _typeAssembler.AssembleType(typeID, assemblyContext.ParticipantState, assemblyContext.MutableTypeBatchCodeGenerator);
AddAdditionalTypesToCache(result.AdditionalTypes);
return result.Type;
}
finally
{
_assemblyContextPool.Enqueue(assemblyContext);
}
},
LazyThreadSafetyMode.ExecutionAndPublication));
}
public Type GetOrCreateType(AssembledTypeID typeID)
{
var lazyType = _assembledTypes.GetOrAdd(typeID, _createAssembledTypeFunc);
try
{
return(lazyType.Value);
}
catch
{
// Lazy<T> with ExecutionAndPublication and a create-function caches the exception.
// In order to renew the Lazy for another attempt, a replace of the Lazy-object is performed, but only if the _assembledTypes dictionary
// still holds the original Lazy (that cached the exception). This avoids a race with a parallel thread that requested the same type.
if (_assembledTypes.TryUpdate(typeID, _createAssembledTypeFunc(typeID), lazyType))
{
throw;
}
// Can theoretically cause a StackOverflowException in case of starvation. We are ignoring this very remote possiblity.
// This code path cannot be tested.
return(GetOrCreateType(typeID));
}
}
