sysperfana/heapanalyser/Libraries/Engine/HeapLib/Array/HeapCellArray.cs
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     1 /*
       
     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 *
       
     5 * Redistribution and use in source and binary forms, with or without
       
     6 * modification, are permitted provided that the following conditions are met:
       
     7 *
       
     8 * - Redistributions of source code must retain the above copyright notice,
       
     9 *   this list of conditions and the following disclaimer.
       
    10 * - Redistributions in binary form must reproduce the above copyright notice,
       
    11 *   this list of conditions and the following disclaimer in the documentation
       
    12 *   and/or other materials provided with the distribution.
       
    13 * - Neither the name of Nokia Corporation nor the names of its contributors
       
    14 *   may be used to endorse or promote products derived from this software
       
    15 *   without specific prior written permission.
       
    16 *
       
    17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
       
    18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
       
    19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
       
    20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
       
    21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
       
    22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
       
    23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
       
    24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
       
    25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
       
    26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
       
    27 * POSSIBILITY OF SUCH DAMAGE.
       
    28 * 
       
    29 * Initial Contributors:
       
    30 * Nokia Corporation - initial contribution.
       
    31 *
       
    32 * Contributors:
       
    33 *
       
    34 * Description: 
       
    35 *
       
    36 */
       
    37 
       
    38 using System;
       
    39 using System.Text;
       
    40 using System.Collections;
       
    41 using System.Collections.Generic;
       
    42 using HeapLib.Cells;
       
    43 using SymbianUtils.Collections;
       
    44 
       
    45 namespace HeapLib.Array
       
    46 {
       
    47 	public class HeapCellArray : HeapCellArrayBase
       
    48 	{
       
    49 		#region Constructors & destructor
       
    50 		public HeapCellArray()
       
    51             : this( 100 )
       
    52 		{
       
    53 		}
       
    54 
       
    55 		public HeapCellArray( int aGranularity )
       
    56 		{
       
    57             iComparer = new HeapCellComparerByAddress();
       
    58             iSortedList = new SortedList<uint, HeapCell>();
       
    59             iFlatList = new List<HeapCell>( aGranularity );
       
    60 		}
       
    61 
       
    62 		public HeapCellArray( HeapCellArray aCopy )
       
    63             : this( aCopy.Count + 1 )
       
    64 		{
       
    65 			foreach( HeapCell cell in aCopy )
       
    66 			{
       
    67 				Add( cell );
       
    68 			}
       
    69 		}
       
    70 		#endregion
       
    71 
       
    72 		#region API
       
    73         public override void Clear()
       
    74         {
       
    75             iFlatList.Clear();
       
    76             iSortedList.Clear();
       
    77         }
       
    78 
       
    79         public override void Add( HeapCell aCell )
       
    80         {
       
    81             uint address = aCell.Address;
       
    82             //
       
    83             iSortedList.Add( address, aCell );
       
    84             //
       
    85             int insertPos = iFlatList.BinarySearch( aCell, iComparer );
       
    86             System.Diagnostics.Debug.Assert( insertPos < 0 );
       
    87             insertPos = ~insertPos;
       
    88             iFlatList.Insert( insertPos, aCell );
       
    89         }
       
    90 
       
    91         public override void Remove( HeapCell aCell )
       
    92         {
       
    93             uint address = aCell.Address;
       
    94             if ( iSortedList.ContainsKey( address ) )
       
    95             {
       
    96                 HeapCell c = iSortedList[ address ];
       
    97                 iSortedList.Remove( address );
       
    98                 iFlatList.Remove( c );
       
    99             }
       
   100         }
       
   101 
       
   102         public override int CellIndex( HeapCell aCell )
       
   103 		{
       
   104             int ret = -1;
       
   105             //
       
   106             uint address = aCell.Address;
       
   107             int pos = iFlatList.BinarySearch( aCell, iComparer );
       
   108             if ( pos >= 0 )
       
   109             {
       
   110                 ret = pos;
       
   111             }
       
   112             //
       
   113 			return ret;
       
   114 		}
       
   115 
       
   116         public override HeapCell CellByAddress( uint aAddress, out int aIndex )
       
   117         {
       
   118             HeapCell ret = null;
       
   119 
       
   120             // If we're using an address-based comparer, we can optimise the lookup.
       
   121             // Otherwise, we have to fall back to the slow iterative base class algorithm.
       
   122             if ( iComparer is HeapCellComparerByAddress )
       
   123             {
       
   124                 HeapCell temp = new HeapCell( aAddress, 0, HeapCell.TType.EAllocated );
       
   125                 aIndex = iFlatList.BinarySearch( temp, iComparer );
       
   126                 if ( aIndex < 0 )
       
   127                 {
       
   128                     // There wasn't an exact match, so the binary search algorithm returns
       
   129                     // us the next largest entry - or in other words, the insertion point
       
   130                     // if we were about to insert a new cell into the list.
       
   131                     //
       
   132                     // Because we want to locate the cell that contains the specified
       
   133                     // address value, then most likely it's the prior cell.
       
   134                     aIndex = ~aIndex - 1;
       
   135                 }
       
   136                 if ( aIndex >= 0 && aIndex < iFlatList.Count )
       
   137                 {
       
   138                     ret = iFlatList[ aIndex ];
       
   139                 }
       
   140                 else
       
   141                 {
       
   142                     aIndex = -1;
       
   143                 }
       
   144             }
       
   145             else
       
   146             {
       
   147                 ret = base.CellByAddress( aAddress, out aIndex );
       
   148             }
       
   149             //
       
   150             return ret;
       
   151         }
       
   152       
       
   153         public override HeapCell CellByExactAddress( uint aAddress, out int aIndex )
       
   154         {
       
   155             aIndex = -1;
       
   156             HeapCell ret = null;
       
   157             iSortedList.TryGetValue( aAddress, out ret );
       
   158             if ( ret != null )
       
   159             {
       
   160                 aIndex = CellIndex( ret );
       
   161             }
       
   162             return ret;
       
   163         }
       
   164         #endregion
       
   165 
       
   166 		#region Properties
       
   167 		public override int Count
       
   168 		{
       
   169             get { return iFlatList.Count; }
       
   170 		}
       
   171 
       
   172         public override HeapCell this[ int aIndex ]
       
   173 		{
       
   174             get
       
   175             {
       
   176                 HeapCell ret = iFlatList[ aIndex ];
       
   177                 return ret;
       
   178             }
       
   179 		}
       
   180 		#endregion
       
   181 
       
   182         #region Sorting
       
   183         public void SortByAddress()
       
   184         {
       
   185             IComparer<HeapCell> comparer = new HeapCellComparerByAddress();
       
   186             Sort( comparer );
       
   187         }
       
   188 
       
   189         public void SortByType()
       
   190         {
       
   191             IComparer<HeapCell> comparer = new HeapCellComparerByType();
       
   192             Sort( comparer );
       
   193         }
       
   194 
       
   195         public void SortByLength()
       
   196         {
       
   197             IComparer<HeapCell> comparer = new HeapCellComparerByLength();
       
   198             Sort( comparer );
       
   199         }
       
   200         #endregion
       
   201 
       
   202         #region Internal methods
       
   203         private void Sort( IComparer<HeapCell> aComparer )
       
   204         {
       
   205             iComparer = aComparer;
       
   206             iFlatList.Sort( iComparer );
       
   207         }
       
   208         #endregion
       
   209 
       
   210 		#region Data members
       
   211         private IComparer<HeapCell> iComparer = null;
       
   212         private List<HeapCell> iFlatList = new List<HeapCell>();
       
   213         private SortedList<uint, HeapCell> iSortedList = new SortedList<uint, HeapCell>();
       
   214 		#endregion
       
   215 	}
       
   216 }