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//
// System.Runtime.Remoting.StackBuilderSink.cs
//
// Author: Lluis Sanchez Gual (lsg@ctv.es)
//
// (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.Reflection;
using System.Runtime.Remoting.Proxies;
namespace System.Runtime.Remoting.Messaging
{
// Sink that calls the real method of the object
internal class StackBuilderSink: IMessageSink
{
MarshalByRefObject _target;
RealProxy _rp;
public StackBuilderSink (MarshalByRefObject obj, bool forceInternalExecute)
{
_target = obj;
if (!forceInternalExecute && RemotingServices.IsTransparentProxy (obj))
_rp = RemotingServices.GetRealProxy (obj);
}
public IMessage SyncProcessMessage (IMessage msg)
{
CheckParameters (msg);
// Makes the real call to the object
if (_rp != null) return _rp.Invoke (msg);
else return RemotingServices.InternalExecuteMessage (_target, (IMethodCallMessage)msg);
}
public IMessageCtrl AsyncProcessMessage (IMessage msg, IMessageSink replySink)
{
object[] parms = new object[] {msg, replySink};
ThreadPool.QueueUserWorkItem (new WaitCallback ((data) => {
try {
ExecuteAsyncMessage (data);
} catch {}
}
), parms);
return null;
}
void ExecuteAsyncMessage (object ob)
{
object[] parms = (object[]) ob;
IMethodCallMessage msg = (IMethodCallMessage) parms[0];
IMessageSink replySink = (IMessageSink)parms[1];
CheckParameters (msg);
IMessage res;
if (_rp != null) res = _rp.Invoke (msg);
else res = RemotingServices.InternalExecuteMessage (_target, msg);
replySink.SyncProcessMessage (res);
}
public IMessageSink NextSink
{
get { return null; }
}
void CheckParameters (IMessage msg)
{
IMethodCallMessage mcm = (IMethodCallMessage) msg;
ParameterInfo[] parameters = mcm.MethodBase.GetParameters();
int narg = 0;
foreach (ParameterInfo pi in parameters)
{
object pval = mcm.GetArg (narg++);
Type pt = pi.ParameterType;
if (pt.IsByRef) pt = pt.GetElementType ();
if (pval != null && !pt.IsInstanceOfType (pval))
throw new RemotingException ("Cannot cast argument " + pi.Position + " of type '" + pval.GetType().AssemblyQualifiedName +
"' to type '" + pt.AssemblyQualifiedName + "'");
}
}
}
}
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