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//
// System.Runtime.Remoting.Messaging.CallContext.cs
//
// Author: Jaime Anguiano Olarra (jaime@gnome.org)
// Lluis Sanchez Gual (lluis@ximian.com)
//
// (c) 2002, Jaime Anguiano Olarra
//
///<summary>
///Provides several properties that come with the execution code path.
///This class is sealed.
///</summary>
//
// 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.Collections;
namespace System.Runtime.Remoting.Messaging
{
[Serializable]
[System.Runtime.InteropServices.ComVisible (true)]
public sealed class CallContext
{
[ThreadStatic] static Header [] Headers;
[ThreadStatic] static Hashtable logicalDatastore;
[ThreadStatic] static Hashtable datastore;
[ThreadStatic] static object hostContext;
private CallContext ()
{
}
public static object HostContext {
get { return hostContext; }
set { hostContext = value; }
}
// public methods
public static void FreeNamedDataSlot (string name)
{
Datastore.Remove (name);
LogicalDatastore.Remove (name);
}
public static object GetData (string name)
{
if (LogicalDatastore.ContainsKey (name)) {
return LogicalDatastore [name];
} else {
return Datastore [name];
}
}
public static void SetData (string name, object data)
{
if (data is ILogicalThreadAffinative) {
LogicalSetData (name, data);
} else {
LogicalDatastore.Remove (name);
Datastore [name] = data;
}
}
public static object LogicalGetData (string name)
{
return LogicalDatastore [name];
}
public static void LogicalSetData (string name, object data)
{
Datastore.Remove (name);
LogicalDatastore [name] = data;
}
public static Header[] GetHeaders ()
{
return Headers;
}
public static void SetHeaders (Header[] headers)
{
Headers = headers;
}
internal static LogicalCallContext CreateLogicalCallContext (bool createEmpty)
{
LogicalCallContext ctx = null;
if (logicalDatastore != null) {
ctx = new LogicalCallContext ();
foreach (DictionaryEntry entry in logicalDatastore) {
ctx.SetData ((string)entry.Key, entry.Value);
}
}
if (ctx == null && createEmpty)
return new LogicalCallContext ();
else
return ctx;
}
internal static object SetCurrentCallContext (LogicalCallContext ctx)
{
object oldData = new object[] { datastore, logicalDatastore };
if (ctx != null && ctx.HasInfo)
logicalDatastore = (Hashtable) ctx.Datastore.Clone ();
else
logicalDatastore = null;
return oldData;
}
internal static void UpdateCurrentLogicalCallContext (LogicalCallContext ctx)
{
Hashtable data = ctx.Datastore;
if (data == null)
return;
foreach (DictionaryEntry entry in data)
LogicalSetData ((string)entry.Key, entry.Value);
}
internal static void RestoreCallContext (object oldContext)
{
object[] contextArray = (object[])oldContext;
datastore = (Hashtable)contextArray [0];
logicalDatastore = (Hashtable)contextArray [1];
}
private static Hashtable Datastore
{
get {
Hashtable r = datastore;
if (r == null)
return datastore = new Hashtable ();
return r;
}
}
private static Hashtable LogicalDatastore
{
get {
Hashtable r = logicalDatastore;
if (r == null)
return logicalDatastore = new Hashtable ();
return r;
}
}
}
[System.Runtime.InteropServices.ComVisible (true)]
public interface ILogicalThreadAffinative
{
}
}
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