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LifetimeServices Class

Controls the .NET remoting lifetime services.

For a list of all members of this type, see LifetimeServices Members.

System.Object
   System.Runtime.Remoting.Lifetime.LifetimeServices

[Visual Basic]
NotInheritable Public Class LifetimeServices
[C#]
public sealed class LifetimeServices
[C++]
public __gc __sealed class LifetimeServices
[JScript]
public class LifetimeServices

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Remarks

Distributed garbage collection is responsible for controlling the lifetimes of server applications, and for deleting them when their lifetimes have expired. Traditionally, distributed garbage collection uses reference counts and pinging for control. This works well when there are a few clients per object, but does not work well when there are thousands of clients per each object. The lifetime service can assume the function of a traditional distributed garbage collector, and scales well when the number of clients increases.

The lifetime service associates a lease with each remotely activated object. When the lease expires, the object is removed.

Note   This class makes a link demand. A SecurityException is thrown if the immediate caller does not have infrastructure permission. See Link Demands for more information.

Example

[Visual Basic] 
Imports System
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Http
Imports System.Runtime.Remoting.Lifetime


Public Class Server
   
   Public Shared Sub Main()
      LifetimeServices.LeaseTime = TimeSpan.FromSeconds(5)
      LifetimeServices.LeaseManagerPollTime = TimeSpan.FromSeconds(3)
      LifetimeServices.RenewOnCallTime = TimeSpan.FromSeconds(2)
      LifetimeServices.SponsorshipTimeout = TimeSpan.FromSeconds(1)
      
      
      ChannelServices.RegisterChannel(New HttpChannel(8080))
      RemotingConfiguration.RegisterActivatedServiceType(GetType(ClientActivatedType))
      
      Console.WriteLine("The server is listening. Press Enter to exit....")
      Console.ReadLine()
      
      Console.WriteLine("GC'ing.")
      GC.Collect()
      GC.WaitForPendingFinalizers()
   End Sub 'Main
   
End Class 'Server

[C#] 
using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using System.Runtime.Remoting.Lifetime;

public class Server {

   public static void Main() {

      LifetimeServices.LeaseTime = TimeSpan.FromSeconds(5);
      LifetimeServices.LeaseManagerPollTime = TimeSpan.FromSeconds(3);
      LifetimeServices.RenewOnCallTime = TimeSpan.FromSeconds(2);
      LifetimeServices.SponsorshipTimeout = TimeSpan.FromSeconds(1);

   
      ChannelServices.RegisterChannel(new HttpChannel(8080));
      RemotingConfiguration.RegisterActivatedServiceType(typeof(ClientActivatedType));
      
      Console.WriteLine("The server is listening. Press Enter to exit....");
      Console.ReadLine();  

      Console.WriteLine("GC'ing.");
      GC.Collect();
      GC.WaitForPendingFinalizers();
   }
}

[C++] 
#using <mscorlib.dll>
#using <system.dll>
#using <system.runtime.remoting.dll>

using namespace System;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Channels::Http;
using namespace System::Runtime::Remoting::Lifetime;

int main() 
{
    LifetimeServices::LeaseTime = TimeSpan::FromSeconds(5);
    LifetimeServices::LeaseManagerPollTime = TimeSpan::FromSeconds(3);
    LifetimeServices::RenewOnCallTime = TimeSpan::FromSeconds(2);
    LifetimeServices::SponsorshipTimeout = TimeSpan::FromSeconds(1);


    ChannelServices::RegisterChannel(new HttpChannel(8080));
    RemotingConfiguration::RegisterActivatedServiceType(__typeof(ClientActivatedType));

    Console::WriteLine(S"The server is listening. Press Enter to exit....");
    Console::ReadLine();  

    Console::WriteLine(S"GC'ing.");
    GC::Collect();
    GC::WaitForPendingFinalizers();

    return 0;
}

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Namespace: System.Runtime.Remoting.Lifetime

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

Assembly: Mscorlib (in Mscorlib.dll)

.NET Framework Security: 

See Also

LifetimeServices Members | System.Runtime.Remoting.Lifetime Namespace

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