Dec2017-Script-Dump/mscorlib/System/Runtime/Remoting/Lifetime/Lease.cs

using System;
using System.Collections;
using System.Threading;

namespace System.Runtime.Remoting.Lifetime
{
	// Token: 0x020003D1 RID: 977
	internal class Lease : MarshalByRefObject, ILease
	{
		// Token: 0x06002669 RID: 9833 RVA: 0x0007E7C8 File Offset: 0x0007C9C8
		public Lease()
		{
			this._currentState = LeaseState.Initial;
			this._initialLeaseTime = LifetimeServices.LeaseTime;
			this._renewOnCallTime = LifetimeServices.RenewOnCallTime;
			this._sponsorshipTimeout = LifetimeServices.SponsorshipTimeout;
			this._leaseExpireTime = DateTime.Now + this._initialLeaseTime;
		}

		// Token: 0x17000730 RID: 1840
		// (get) Token: 0x0600266A RID: 9834 RVA: 0x0007E81C File Offset: 0x0007CA1C
		public TimeSpan CurrentLeaseTime
		{
			get
			{
				return this._leaseExpireTime - DateTime.Now;
			}
		}

		// Token: 0x17000731 RID: 1841
		// (get) Token: 0x0600266B RID: 9835 RVA: 0x0007E830 File Offset: 0x0007CA30
		public LeaseState CurrentState
		{
			get
			{
				return this._currentState;
			}
		}

		// Token: 0x0600266C RID: 9836 RVA: 0x0007E838 File Offset: 0x0007CA38
		public void Activate()
		{
			this._currentState = LeaseState.Active;
		}

		// Token: 0x17000732 RID: 1842
		// (get) Token: 0x0600266D RID: 9837 RVA: 0x0007E844 File Offset: 0x0007CA44
		// (set) Token: 0x0600266E RID: 9838 RVA: 0x0007E84C File Offset: 0x0007CA4C
		public TimeSpan InitialLeaseTime
		{
			get
			{
				return this._initialLeaseTime;
			}
			set
			{
				if (this._currentState != LeaseState.Initial)
				{
					throw new RemotingException("InitialLeaseTime property can only be set when the lease is in initial state; state is " + this._currentState + ".");
				}
				this._initialLeaseTime = value;
				this._leaseExpireTime = DateTime.Now + this._initialLeaseTime;
				if (value == TimeSpan.Zero)
				{
					this._currentState = LeaseState.Null;
				}
			}
		}

		// Token: 0x17000733 RID: 1843
		// (get) Token: 0x0600266F RID: 9839 RVA: 0x0007E8BC File Offset: 0x0007CABC
		// (set) Token: 0x06002670 RID: 9840 RVA: 0x0007E8C4 File Offset: 0x0007CAC4
		public TimeSpan RenewOnCallTime
		{
			get
			{
				return this._renewOnCallTime;
			}
			set
			{
				if (this._currentState != LeaseState.Initial)
				{
					throw new RemotingException("RenewOnCallTime property can only be set when the lease is in initial state; state is " + this._currentState + ".");
				}
				this._renewOnCallTime = value;
			}
		}

		// Token: 0x17000734 RID: 1844
		// (get) Token: 0x06002671 RID: 9841 RVA: 0x0007E8FC File Offset: 0x0007CAFC
		// (set) Token: 0x06002672 RID: 9842 RVA: 0x0007E904 File Offset: 0x0007CB04
		public TimeSpan SponsorshipTimeout
		{
			get
			{
				return this._sponsorshipTimeout;
			}
			set
			{
				if (this._currentState != LeaseState.Initial)
				{
					throw new RemotingException("SponsorshipTimeout property can only be set when the lease is in initial state; state is " + this._currentState + ".");
				}
				this._sponsorshipTimeout = value;
			}
		}

		// Token: 0x06002673 RID: 9843 RVA: 0x0007E93C File Offset: 0x0007CB3C
		public void Register(ISponsor obj)
		{
			this.Register(obj, TimeSpan.Zero);
		}

		// Token: 0x06002674 RID: 9844 RVA: 0x0007E94C File Offset: 0x0007CB4C
		public void Register(ISponsor obj, TimeSpan renewalTime)
		{
			lock (this)
			{
				if (this._sponsors == null)
				{
					this._sponsors = new ArrayList();
				}
				this._sponsors.Add(obj);
			}
			if (renewalTime != TimeSpan.Zero)
			{
				this.Renew(renewalTime);
			}
		}

		// Token: 0x06002675 RID: 9845 RVA: 0x0007E9C4 File Offset: 0x0007CBC4
		public TimeSpan Renew(TimeSpan renewalTime)
		{
			DateTime dateTime = DateTime.Now + renewalTime;
			if (dateTime > this._leaseExpireTime)
			{
				this._leaseExpireTime = dateTime;
			}
			return this.CurrentLeaseTime;
		}

		// Token: 0x06002676 RID: 9846 RVA: 0x0007E9FC File Offset: 0x0007CBFC
		public void Unregister(ISponsor obj)
		{
			lock (this)
			{
				if (this._sponsors != null)
				{
					for (int i = 0; i < this._sponsors.Count; i++)
					{
						if (object.ReferenceEquals(this._sponsors[i], obj))
						{
							this._sponsors.RemoveAt(i);
							break;
						}
					}
				}
			}
		}

		// Token: 0x06002677 RID: 9847 RVA: 0x0007EA90 File Offset: 0x0007CC90
		internal void UpdateState()
		{
			if (this._currentState != LeaseState.Active)
			{
				return;
			}
			if (this.CurrentLeaseTime > TimeSpan.Zero)
			{
				return;
			}
			if (this._sponsors != null)
			{
				this._currentState = LeaseState.Renewing;
				lock (this)
				{
					this._renewingSponsors = new Queue(this._sponsors);
				}
				this.CheckNextSponsor();
			}
			else
			{
				this._currentState = LeaseState.Expired;
			}
		}

		// Token: 0x06002678 RID: 9848 RVA: 0x0007EB28 File Offset: 0x0007CD28
		private void CheckNextSponsor()
		{
			if (this._renewingSponsors.Count == 0)
			{
				this._currentState = LeaseState.Expired;
				this._renewingSponsors = null;
				return;
			}
			ISponsor sponsor = (ISponsor)this._renewingSponsors.Peek();
			this._renewalDelegate = new Lease.RenewalDelegate(sponsor.Renewal);
			IAsyncResult asyncResult = this._renewalDelegate.BeginInvoke(this, null, null);
			ThreadPool.RegisterWaitForSingleObject(asyncResult.AsyncWaitHandle, new WaitOrTimerCallback(this.ProcessSponsorResponse), asyncResult, this._sponsorshipTimeout, true);
		}

		// Token: 0x06002679 RID: 9849 RVA: 0x0007EBA8 File Offset: 0x0007CDA8
		private void ProcessSponsorResponse(object state, bool timedOut)
		{
			if (!timedOut)
			{
				try
				{
					IAsyncResult asyncResult = (IAsyncResult)state;
					TimeSpan timeSpan = this._renewalDelegate.EndInvoke(asyncResult);
					if (timeSpan != TimeSpan.Zero)
					{
						this.Renew(timeSpan);
						this._currentState = LeaseState.Active;
						this._renewingSponsors = null;
						return;
					}
				}
				catch
				{
				}
			}
			this.Unregister((ISponsor)this._renewingSponsors.Dequeue());
			this.CheckNextSponsor();
		}

		// Token: 0x04000EF5 RID: 3829
		private DateTime _leaseExpireTime;

		// Token: 0x04000EF6 RID: 3830
		private LeaseState _currentState;

		// Token: 0x04000EF7 RID: 3831
		private TimeSpan _initialLeaseTime;

		// Token: 0x04000EF8 RID: 3832
		private TimeSpan _renewOnCallTime;

		// Token: 0x04000EF9 RID: 3833
		private TimeSpan _sponsorshipTimeout;

		// Token: 0x04000EFA RID: 3834
		private ArrayList _sponsors;

		// Token: 0x04000EFB RID: 3835
		private Queue _renewingSponsors;

		// Token: 0x04000EFC RID: 3836
		private Lease.RenewalDelegate _renewalDelegate;

		// Token: 0x020006CF RID: 1743
		// (Invoke) Token: 0x060041C4 RID: 16836
		private delegate TimeSpan RenewalDelegate(ILease lease);
	}
}