ClientSponsor.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Runtime / Remoting / ClientSponsor.cs / 1305376 / ClientSponsor.cs

                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
//+----------------------------------------------------------------------------
// 
// File:        ClientSponsor.cs 
//
// Contents:    Agent for keeping Server Object's lifetime in [....] with a client's lifetime 
//
// History:     8/9/00   [....]        Created
//
//+--------------------------------------------------------------------------- 

namespace System.Runtime.Remoting.Lifetime 
{ 
    using System;
    using System.Collections; 
    using System.Security.Permissions;

    [System.Security.SecurityCritical]  // auto-generated_required
    [SecurityPermissionAttribute(SecurityAction.InheritanceDemand, Flags=SecurityPermissionFlag.Infrastructure)] 
    [System.Runtime.InteropServices.ComVisible(true)]
    public class ClientSponsor : MarshalByRefObject, ISponsor 
    { 
        private Hashtable sponsorTable = new Hashtable(10);
        private TimeSpan m_renewalTime = TimeSpan.FromMinutes(2); 

        public ClientSponsor()
        {
        } 

        public ClientSponsor(TimeSpan renewalTime) 
        { 
            this.m_renewalTime = renewalTime;
        } 

        public TimeSpan RenewalTime
        {
            get{ return m_renewalTime;} 
            set{ m_renewalTime = value;}
        } 
 
        [System.Security.SecurityCritical]  // auto-generated
        public bool Register(MarshalByRefObject obj) 
        {
            BCLDebug.Trace("REMOTE", "ClientSponsor Register "+obj);
            ILease lease = (ILease)obj.GetLifetimeService();
            if (lease == null) 
                return false;
 
            lease.Register(this); 
            lock(sponsorTable)
            { 
                sponsorTable[obj] = lease;
            }
            return true;
        } 

        [System.Security.SecurityCritical]  // auto-generated 
        public void Unregister(MarshalByRefObject obj) 
        {
            BCLDebug.Trace("REMOTE", "ClientSponsor Unregister "+obj); 

            ILease lease = null;
            lock(sponsorTable)
            { 
                lease = (ILease)sponsorTable[obj];
            } 
            if (lease != null) 
                lease.Unregister(this);
        } 

        // ISponsor method
        [System.Security.SecurityCritical]
        public TimeSpan Renewal(ILease lease) 
        {
            BCLDebug.Trace("REMOTE", "ClientSponsor Renewal "+m_renewalTime); 
            return m_renewalTime; 
        }
 
        [System.Security.SecurityCritical]  // auto-generated
        public void Close()
        {
            BCLDebug.Trace("REMOTE","ClientSponsor Close"); 
            lock(sponsorTable)
            { 
                IDictionaryEnumerator e = sponsorTable.GetEnumerator(); 
                while(e.MoveNext())
                    ((ILease)e.Value).Unregister(this); 
                sponsorTable.Clear();
            }
        }
 
        // Don't create a lease on the sponsor
        [System.Security.SecurityCritical] 
        public override Object InitializeLifetimeService() 
        {
            return null; 
        }

        [System.Security.SecuritySafeCritical] // finalizers should be treated as safe
        ~ClientSponsor() 
        {
            BCLDebug.Trace("REMOTE","ClientSponsor Finalize"); 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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