private T HandleScopedStorageCollision<T>(int id, T value)
{
ScopedStorage newStorage = new ScopedStorage { Id = id, ScopedService = value };
SpinWait spinWait = new SpinWait();
var initialStorage = InternalScopedStorage;
do
{
var current = initialStorage;
newStorage.Next = current;
while (!ReferenceEquals(current, ScopedStorage.Empty))
{
if (current.Id == id)
{
return value;
}
current = current.Next;
}
if (ReferenceEquals(
Interlocked.CompareExchange(ref InternalScopedStorage, newStorage, initialStorage),
initialStorage))
{
return value;
}
spinWait.SpinOnce();
initialStorage = InternalScopedStorage;
}
while (true);
}
public AllowedOptionsBuilderTest()
{
var httpContextStorage = new ScopedStorage <HttpContext>
{
Value = new DefaultHttpContext
{
User = new MockPrincipal()
}
};
this.builder = new AllowedOptionsBuilder <Entity>(httpContextStorage);
}
static ScopedStorage()
{
var empty = new ScopedStorage();
empty.Next = empty; // this is intentional and need so you can make the assumption that Next is never null
Empty = empty;
}