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-rw-r--r--src/mscorlib/src/System/Security/Util/TokenBasedSet.cs443
1 files changed, 0 insertions, 443 deletions
diff --git a/src/mscorlib/src/System/Security/Util/TokenBasedSet.cs b/src/mscorlib/src/System/Security/Util/TokenBasedSet.cs
deleted file mode 100644
index 8589fa7c42..0000000000
--- a/src/mscorlib/src/System/Security/Util/TokenBasedSet.cs
+++ /dev/null
@@ -1,443 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-namespace System.Security.Util
-{
- using System;
- using System.Collections;
- using System.Security.Permissions;
- using System.Runtime.Serialization;
- using System.Threading;
- using System.Diagnostics;
- using System.Diagnostics.Contracts;
- using System.Diagnostics.CodeAnalysis;
-
-#if FEATURE_SERIALIZATION
- [Serializable]
-#endif
- internal class TokenBasedSet
- {
-
-
- // Following 3 fields are used only for serialization compat purposes: DO NOT USE THESE EVER!
-#pragma warning disable 414
- private int m_initSize = 24;
- private int m_increment = 8;
-#pragma warning restore 414
- private Object[] m_objSet;
- // END -> Serialization only fields
-
- [OptionalField(VersionAdded = 2)]
- private volatile Object m_Obj;
- [OptionalField(VersionAdded = 2)]
- private volatile Object[] m_Set;
-
- private int m_cElt;
- private volatile int m_maxIndex;
-
-
- [OnDeserialized]
- private void OnDeserialized(StreamingContext ctx)
- {
- OnDeserializedInternal();
- }
- private void OnDeserializedInternal()
- {
- if (m_objSet != null) //v1.x case
- {
- if (m_cElt == 1)
- m_Obj = m_objSet[m_maxIndex];
- else
- m_Set = m_objSet;
- m_objSet = null;
- }
- // Nothing to do for the v2.0 and beyond case
- }
-
- [OnSerializing]
- private void OnSerializing(StreamingContext ctx)
- {
-
- if ((ctx.State & ~(StreamingContextStates.Clone|StreamingContextStates.CrossAppDomain)) != 0)
- {
- //Nothing special for the v2 and beyond case
-
- // for the v1.x case, we need to create m_objSet if necessary
- if (m_cElt == 1)
- {
- m_objSet = new Object[m_maxIndex+1];
- m_objSet[m_maxIndex] = m_Obj;
- }
- else if (m_cElt > 0)
- {
- // Array case:
- m_objSet = m_Set;
- }
-
- }
- }
- [OnSerialized]
- private void OnSerialized(StreamingContext ctx)
- {
- if ((ctx.State & ~(StreamingContextStates.Clone|StreamingContextStates.CrossAppDomain)) != 0)
- {
- m_objSet = null;
-
- }
- }
-
-
- internal bool MoveNext(ref TokenBasedSetEnumerator e)
- {
- switch (m_cElt)
- {
- case 0:
- return false;
-
- case 1:
- if (e.Index == -1)
- {
- e.Index = m_maxIndex;
- e.Current = m_Obj;
- return true;
- }
- else
- {
- e.Index = (short)(m_maxIndex+1);
- e.Current = null;
- return false;
- }
-
- default:
- while (++e.Index <= m_maxIndex)
- {
- e.Current = Volatile.Read(ref m_Set[e.Index]);
-
- if (e.Current != null)
- return true;
- }
-
- e.Current = null;
- return false;
- }
- }
-
- internal TokenBasedSet()
- {
- Reset();
- }
-
- [SuppressMessage("Microsoft.Concurrency", "CA8001", Justification = "Reviewed for thread safety")]
- internal TokenBasedSet(TokenBasedSet tbSet)
- {
- if (tbSet == null)
- {
- Reset();
- return;
- }
-
- if (tbSet.m_cElt > 1)
- {
- Object[] aObj = tbSet.m_Set;
- int aLen = aObj.Length;
-
- Object[] aNew = new Object[aLen];
- System.Array.Copy(aObj, 0, aNew, 0, aLen);
-
- m_Set = aNew;
- }
- else
- {
- m_Obj = tbSet.m_Obj;
- }
-
- m_cElt = tbSet.m_cElt;
- m_maxIndex = tbSet.m_maxIndex;
- }
-
- internal void Reset()
- {
- m_Obj = null;
- m_Set = null;
- m_cElt = 0;
- m_maxIndex = -1;
- }
-
- internal void SetItem(int index, Object item)
- {
- Object[] aObj = null;
-
- if (item == null)
- {
- RemoveItem(index);
- return;
- }
-
- switch (m_cElt)
- {
- case 0:
- // on the first item, we don't create an array, we merely remember it's index and value
- // this this the 99% case
- m_cElt = 1;
- m_maxIndex = (short)index;
- m_Obj = item;
- break;
-
- case 1:
- // we have to decide if a 2nd item has indeed been added and create the array
- // if it has
- if (index == m_maxIndex)
- {
- // replacing the one existing item
- m_Obj = item;
- }
- else
- {
- // adding a second distinct permission
- Object objSaved = m_Obj;
- int iMax = Math.Max(m_maxIndex, index);
-
- aObj = new Object[iMax+1];
- aObj[m_maxIndex] = objSaved;
- aObj[index] = item;
- m_maxIndex = (short)iMax;
- m_cElt = 2;
- m_Set = aObj;
- m_Obj = null;
- }
- break;
-
- default:
- // this is the general case code for when there is really an array
-
- aObj = m_Set;
-
- // we are now adding an item, check if we need to grow
-
- if (index >= aObj.Length)
- {
- Object[] newset = new Object[index+1];
- System.Array.Copy(aObj, 0, newset, 0, m_maxIndex+1);
- m_maxIndex = (short)index;
- newset[index] = item;
- m_Set = newset;
- m_cElt++;
- }
- else
- {
- if (aObj[index] == null)
- m_cElt++;
-
- aObj[index] = item;
-
- if (index > m_maxIndex)
- m_maxIndex = (short)index;
- }
- break;
- }
- }
-
- [SuppressMessage("Microsoft.Concurrency", "CA8001", Justification = "Reviewed for thread-safety")]
- internal Object GetItem(int index)
- {
- switch (m_cElt)
- {
- case 0:
- return null;
-
- case 1:
- if (index == m_maxIndex)
- return m_Obj;
- else
- return null;
- default:
- if (index < m_Set.Length)
- return Volatile.Read(ref m_Set[index]);
- else
- return null;
- }
- }
-
- internal Object RemoveItem(int index)
- {
- Object ret = null;
-
- switch (m_cElt)
- {
- case 0:
- ret = null;
- break;
-
- case 1:
- if (index != m_maxIndex)
- {
- // removing a permission we don't have ignore it
- ret = null;
- }
- else
- {
- // removing the permission we have at the moment
- ret = m_Obj;
- Reset();
- }
- break;
-
- default:
- // this is the general case code for when there is really an array
-
- // we are removing an item
- if (index < m_Set.Length && (ret = Volatile.Read(ref m_Set[index])) != null)
- {
- // ok we really deleted something at this point
-
- Volatile.Write(ref m_Set[index], null);
- m_cElt--;
-
- if (index == m_maxIndex)
- ResetMaxIndex(m_Set);
-
- // collapse the array
- if (m_cElt == 1)
- {
- m_Obj = Volatile.Read(ref m_Set[m_maxIndex]);
- m_Set = null;
- }
- }
- break;
- }
-
- return ret;
- }
-
- private void ResetMaxIndex(Object[] aObj)
- {
- int i;
-
- // Start at the end of the array, and
- // scan backwards for the first non-null
- // slot. That is the new maxIndex.
- for (i = aObj.Length - 1; i >= 0; i--)
- {
- if (aObj[i] != null)
- {
- m_maxIndex = (short)i;
- return;
- }
- }
-
- m_maxIndex = -1;
- }
- internal int GetStartingIndex()
- {
- if (m_cElt <= 1)
- return m_maxIndex;
- return 0;
- }
- internal int GetCount()
- {
- return m_cElt;
- }
-
- internal int GetMaxUsedIndex()
- {
- return m_maxIndex;
- }
-
- internal bool FastIsEmpty()
- {
- return m_cElt == 0;
- }
-
- // Used to merge two distinct TokenBasedSets (used currently only in PermissionSet Deserialization)
- internal TokenBasedSet SpecialUnion(TokenBasedSet other)
- {
- // This gets called from PermissionSet.OnDeserialized and it's possible that the TokenBasedSets have
- // not been subjected to VTS callbacks yet
- OnDeserializedInternal();
- TokenBasedSet unionSet = new TokenBasedSet();
- int maxMax;
- if (other != null)
- {
- other.OnDeserializedInternal();
- maxMax = this.GetMaxUsedIndex() > other.GetMaxUsedIndex() ? this.GetMaxUsedIndex() : other.GetMaxUsedIndex();
- }
- else
- maxMax = this.GetMaxUsedIndex();
-
- for (int i = 0; i <= maxMax; ++i)
- {
- Object thisObj = this.GetItem( i );
- IPermission thisPerm = thisObj as IPermission;
-
- Object otherObj = (other != null)?other.GetItem( i ):null;
- IPermission otherPerm = otherObj as IPermission;
-
- if (thisObj == null && otherObj == null)
- continue;
-
- if (thisObj == null)
- {
- PermissionToken token = PermissionToken.GetToken(otherPerm);
-
- if (token == null)
- {
- throw new SerializationException(Environment.GetResourceString("Serialization_InsufficientState"));
- }
-
- unionSet.SetItem(token.m_index, otherPerm);
- }
- else if (otherObj == null)
- {
- PermissionToken token = PermissionToken.GetToken(thisPerm);
- if (token == null)
- {
- throw new SerializationException(Environment.GetResourceString("Serialization_InsufficientState"));
- }
- unionSet.SetItem( token.m_index, thisPerm);
- }
- else
- {
- Debug.Assert( (thisObj == null || otherObj == null), "Permission cannot be in both TokenBasedSets" );
- }
- }
- return unionSet;
- }
-
- internal void SpecialSplit(ref TokenBasedSet unrestrictedPermSet, ref TokenBasedSet normalPermSet, bool ignoreTypeLoadFailures)
- {
- int maxIndex = GetMaxUsedIndex();
-
- for (int i = GetStartingIndex(); i <= maxIndex; ++i)
- {
- Object obj = GetItem( i );
- if (obj != null)
- {
- IPermission perm = obj as IPermission;
- PermissionToken token = PermissionToken.GetToken(perm);
-
- if (perm == null || token == null)
- continue;
-
- if (perm is IUnrestrictedPermission)
- {
- // Add to unrestrictedPermSet
- if (unrestrictedPermSet == null)
- unrestrictedPermSet = new TokenBasedSet();
- unrestrictedPermSet.SetItem(token.m_index, perm);
- }
- else
- {
- // Add to normalPermSet
- if (normalPermSet == null)
- normalPermSet = new TokenBasedSet();
- normalPermSet.SetItem(token.m_index, perm);
- }
-
- }
-
- }
-
- }
- }
-}
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