#if FAT

using System;
using System.Threading;

namespace LinqInternal.Threading.Needles
{
    internal sealed class LockableContext
    {
        internal readonly LockContext<Thread> Context;
        private readonly StructNeedle<TrackingThreadLocal<LockableSlot>> _slots;

        public LockableContext(int capacity)
        {
            Context = new LockContext<Thread>(capacity);
            _slots.Value = new TrackingThreadLocal<LockableSlot>(() => null);
        }

        internal LockableSlot Slot
        {
            get { return _slots.Value.Value; }

            set { _slots.Value.Value = value; }
        }

        public IDisposable Enter()
        {
            return new LockableSlot(this);
        }

        internal bool TryGetSlot(out LockableSlot slot)
        {
            return _slots.Value.TryGetValue(Thread.CurrentThread, out slot) && slot != null;
        }
    }
}

#endif