2 // System.Threading.Thread.cs
5 // Zoltan Varga (vargaz@freemail.hu)
6 // Sebastien Pouliot <sebastien@ximian.com>
8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 using System.Collections;
31 using System.Diagnostics;
32 using System.Reflection;
33 using System.Runtime.InteropServices;
34 using System.Runtime.Serialization;
35 using System.Security;
36 using System.Security.Permissions;
38 namespace System.Threading {
41 public sealed class CompressedStack : ISerializable {
42 private ArrayList _list;
44 internal CompressedStack (int length)
47 _list = new ArrayList (length);
50 internal CompressedStack (CompressedStack cs)
52 if ((cs != null) && (cs._list != null))
53 _list = (ArrayList) cs._list.Clone ();
56 [ComVisibleAttribute (false)]
57 public CompressedStack CreateCopy ()
59 return new CompressedStack (this);
62 public static CompressedStack Capture ()
64 CompressedStack cs = new CompressedStack (0);
65 cs._list = SecurityFrame.GetStack (1);
67 // include any current CompressedStack inside the new Capture
68 CompressedStack currentCs = Thread.CurrentThread.GetCompressedStack ();
69 if (currentCs != null) {
70 for (int i=0; i < currentCs._list.Count; i++)
71 cs._list.Add (currentCs._list [i]);
76 // NOTE: This method doesn't show in the class library status page because
77 // it cannot be "found" with the StrongNameIdentityPermission for ECMA key.
82 [SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode = true)]
83 [StrongNameIdentityPermission (SecurityAction.LinkDemand, PublicKey="00000000000000000400000000000000")]
85 static public CompressedStack GetCompressedStack ()
87 // Note: CompressedStack.GetCompressedStack doesn't return null
88 // like Thread.CurrentThread.GetCompressedStack if no compressed
90 CompressedStack cs = Thread.CurrentThread.GetCompressedStack ();
92 cs = CompressedStack.Capture ();
94 // merge the existing compressed stack (from a previous Thread) with the current
95 // Thread stack so we can assign "all of it" to yet another Thread
96 CompressedStack newstack = CompressedStack.Capture ();
97 for (int i=0; i < newstack._list.Count; i++)
98 cs._list.Add (newstack._list [i]);
103 [MonoTODO ("incomplete")]
107 [ReflectionPermission (SecurityAction.Demand, MemberAccess = true)]
109 public void GetObjectData (SerializationInfo info, StreamingContext context)
112 throw new ArgumentNullException ("info");
118 [SecurityPermission (SecurityAction.LinkDemand, Infrastructure = true)]
120 static public void Run (CompressedStack compressedStack, ContextCallback callback, object state)
122 if (compressedStack == null)
123 throw new ArgumentException ("compressedStack");
125 Thread t = Thread.CurrentThread;
126 CompressedStack original = null;
128 original = t.GetCompressedStack ();
129 t.SetCompressedStack (compressedStack);
133 if (original != null)
134 t.SetCompressedStack (original);
139 internal bool Equals (CompressedStack cs)
142 return cs.IsEmpty ();
145 if (_list.Count != cs._list.Count)
148 for (int i=0; i < _list.Count; i++) {
149 SecurityFrame sf1 = (SecurityFrame) _list [i];
150 SecurityFrame sf2 = (SecurityFrame) cs._list [i];
151 if (!sf1.Equals (sf2))
157 internal bool IsEmpty ()
159 return ((_list == null) || (_list.Count == 0));
162 internal IList List {
163 get { return _list; }