//
// System.Threading.Thread.cs
//
-// Author:
-// Zoltan Varga (vargaz@freemail.hu)
+// Authors:
+// Zoltan Varga (vargaz@freemail.hu)
+// Sebastien Pouliot <sebastien@ximian.com>
//
-// (C) 2004 Novell (http://www.novell.com)
+// Copyright (C) 2004-2005 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.Collections;
+using System.Diagnostics;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Runtime.Serialization;
+using System.Security;
+using System.Security.Permissions;
+
+namespace System.Threading {
+
+ [Serializable]
+ public sealed class CompressedStack : ISerializable {
+ private ArrayList _list;
-namespace System.Threading
-{
- public class CompressedStack {
+ internal CompressedStack (int length)
+ {
+ if (length > 0)
+ _list = new ArrayList (length);
+ }
- internal CompressedStack ()
+ internal CompressedStack (CompressedStack cs)
{
+ if ((cs != null) && (cs._list != null))
+ _list = (ArrayList) cs._list.Clone ();
}
- ~CompressedStack ()
+ [ComVisibleAttribute (false)]
+ public CompressedStack CreateCopy ()
{
+ return new CompressedStack (this);
+ }
+
+ public static CompressedStack Capture ()
+ {
+ CompressedStack cs = new CompressedStack (0);
+ cs._list = SecurityFrame.GetStack (1);
+
+ // include any current CompressedStack inside the new Capture
+ CompressedStack currentCs = Thread.CurrentThread.GetCompressedStack ();
+ if (currentCs != null) {
+ for (int i=0; i < currentCs._list.Count; i++)
+ cs._list.Add (currentCs._list [i]);
+ }
+ return cs;
+ }
+
+ // NOTE: This method doesn't show in the class library status page because
+ // it cannot be "found" with the StrongNameIdentityPermission for ECMA key.
+ // But it's there!
+ [SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode = true)]
+ [StrongNameIdentityPermission (SecurityAction.LinkDemand, PublicKey="00000000000000000400000000000000")]
+ static public CompressedStack GetCompressedStack ()
+ {
+ // Note: CompressedStack.GetCompressedStack doesn't return null
+ // like Thread.CurrentThread.GetCompressedStack if no compressed
+ // stack is present.
+ CompressedStack cs = Thread.CurrentThread.GetCompressedStack ();
+ if (cs == null) {
+ cs = CompressedStack.Capture ();
+ } else {
+ // merge the existing compressed stack (from a previous Thread) with the current
+ // Thread stack so we can assign "all of it" to yet another Thread
+ CompressedStack newstack = CompressedStack.Capture ();
+ for (int i=0; i < newstack._list.Count; i++)
+ cs._list.Add (newstack._list [i]);
+ }
+ return cs;
+ }
+
+ [MonoTODO ("incomplete")]
+ [ReflectionPermission (SecurityAction.Demand, MemberAccess = true)]
+ public void GetObjectData (SerializationInfo info, StreamingContext context)
+ {
+ if (info == null)
+ throw new ArgumentNullException ("info");
+ }
+
+ [SecurityPermission (SecurityAction.LinkDemand, Infrastructure = true)]
+ static public void Run (CompressedStack compressedStack, ContextCallback callback, object state)
+ {
+ if (compressedStack == null)
+ throw new ArgumentException ("compressedStack");
+
+ Thread t = Thread.CurrentThread;
+ CompressedStack original = null;
+ try {
+ original = t.GetCompressedStack ();
+ t.SetCompressedStack (compressedStack);
+ callback (state);
+ }
+ finally {
+ if (original != null)
+ t.SetCompressedStack (original);
+ }
+ }
+
+ // internal stuff
+ internal bool Equals (CompressedStack cs)
+ {
+ if (IsEmpty ())
+ return cs.IsEmpty ();
+ if (cs.IsEmpty ())
+ return false;
+ if (_list.Count != cs._list.Count)
+ return false;
+
+ for (int i=0; i < _list.Count; i++) {
+ SecurityFrame sf1 = (SecurityFrame) _list [i];
+ SecurityFrame sf2 = (SecurityFrame) cs._list [i];
+ if (!sf1.Equals (sf2))
+ return false;
+ }
+ return true;
+ }
+
+ internal bool IsEmpty ()
+ {
+ return ((_list == null) || (_list.Count == 0));
+ }
+
+ internal IList List {
+ get { return _list; }
}
}
}
projects / mono.git / blobdiff