public Deque(IEnumerable <TValue> collection)
{
if (collection == null)
{
throw new ArgumentNullException(nameof(collection), "Collection cannot be null.");
}
#if DEBUG
this.m_lock = new SpinLockWrapper(true);
#else
this.m_lock = new SpinLockWrapper(false);
#endif
var source = CollectionExtensions.ToReadOnlyCollection(collection);
var count = source.Count;
if (count > 0)
{
this.SetCapacity(count);
this.DoAddRange(source);
}
else
{
this.m_data = new TValue[DefaultCapacity];
this.m_count = 0;
this.m_offset = 0;
}
this.m_isDisposed = 0;
}
public virtual void AddRangeFront(IEnumerable <TValue> items)
{
if (items == null)
{
throw new ArgumentNullException(nameof(items), "Collection cannot be null.");
}
this.CheckDisposed();
var result = CollectionExtensions.ToReadOnlyCollection(items);
if (result.Count <= 0)
{
return;
}
this.m_lock.Lock();
try {
this.EnsureCapacity(result.Count);
var idx = this.PreDecrement(result.Count);
this.CopyFrom(result, idx);
} finally {
this.m_lock.Unlock();
}
}