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//
// System.Runtime.Remoting.Contexts.CrossContextChannel.cs
//
// Author: Lluis Sanchez Gual (lluis@ideary.com)
//
// (C) 2002, Lluis Sanchez Gual
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Threading;
using System.Runtime.Remoting.Messaging;
using System.Runtime.Remoting.Activation;
using System.Runtime.Remoting.Channels;
namespace System.Runtime.Remoting.Contexts
{
internal class CrossContextChannel: IMessageSink
{
public IMessage SyncProcessMessage (IMessage msg)
{
ServerIdentity identity = (ServerIdentity) RemotingServices.GetMessageTargetIdentity (msg);
Context oldContext = null;
IMessage response;
if (Threading.Thread.CurrentContext != identity.Context)
oldContext = Context.SwitchToContext (identity.Context);
try
{
Context.NotifyGlobalDynamicSinks (true, msg, false, false);
Thread.CurrentContext.NotifyDynamicSinks (true, msg, false, false);
response = identity.Context.GetServerContextSinkChain().SyncProcessMessage (msg);
Context.NotifyGlobalDynamicSinks (false, msg, false, false);
Thread.CurrentContext.NotifyDynamicSinks (false, msg, false, false);
}
catch (Exception ex)
{
response = new ReturnMessage (ex, (IMethodCallMessage)msg);
}
finally
{
if (oldContext != null)
Context.SwitchToContext (oldContext);
}
return response;
}
public IMessageCtrl AsyncProcessMessage (IMessage msg, IMessageSink replySink)
{
ServerIdentity identity = (ServerIdentity) RemotingServices.GetMessageTargetIdentity (msg);
Context oldContext = null;
if (Threading.Thread.CurrentContext != identity.Context)
oldContext = Context.SwitchToContext (identity.Context);
try
{
Context.NotifyGlobalDynamicSinks (true, msg, false, true);
Thread.CurrentContext.NotifyDynamicSinks (true, msg, false, false);
if (replySink != null) replySink = new ContextRestoreSink (replySink, oldContext, msg);
IMessageCtrl res = identity.AsyncObjectProcessMessage (msg, replySink);
if (replySink == null)
{
Context.NotifyGlobalDynamicSinks (false, msg, false, false);
Thread.CurrentContext.NotifyDynamicSinks (false, msg, false, false);
}
return res;
}
catch (Exception ex)
{
if (replySink != null)
replySink.SyncProcessMessage (new ReturnMessage (ex, (IMethodCallMessage)msg));
return null;
}
finally
{
if (oldContext != null)
Context.SwitchToContext (oldContext);
}
}
public IMessageSink NextSink
{
get { return null; }
}
class ContextRestoreSink: IMessageSink
{
IMessageSink _next;
Context _context;
IMessage _call;
public ContextRestoreSink (IMessageSink next, Context context, IMessage call)
{
_next = next;
_context = context;
_call = call;
}
public IMessage SyncProcessMessage (IMessage msg)
{
try
{
Context.NotifyGlobalDynamicSinks (false, msg, false, false);
Thread.CurrentContext.NotifyDynamicSinks (false, msg, false, false);
return _next.SyncProcessMessage (msg);
}
catch (Exception ex)
{
return new ReturnMessage (ex, (IMethodCallMessage)_call);
}
finally
{
if (_context != null)
Context.SwitchToContext (_context);
}
}
public IMessageCtrl AsyncProcessMessage (IMessage msg, IMessageSink replySink)
{
throw new NotSupportedException(); // Not needed
}
public IMessageSink NextSink
{
get { return _next; }
}
}
}
}
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