SlimReadLockHolder
using System;
using System.ComponentModel;
using System.Threading;
namespace Castle.MicroKernel.Internal
{
    [EditorBrowsable(EditorBrowsableState.Never)]
    internal class SlimReadLockHolder : ILockHolder, IDisposable
    {
        private readonly ReaderWriterLockSlim locker;
        public bool LockAcquired { get; set; }
        public SlimReadLockHolder(ReaderWriterLockSlim locker, bool waitForLock)
        {
            this.locker = locker;
            if (waitForLock) {
                locker.EnterReadLock();
                LockAcquired = true;
            } else
                LockAcquired = locker.TryEnterReadLock(0);
        }
        public void Dispose()
        {
            if (LockAcquired) {
                locker.ExitReadLock();
                LockAcquired = false;
            }
        }
    }
}