1 #define TRACK_INTERNING_STATISTICS

     2 /*

     3 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

     4 * All rights reserved.

     5 * This component and the accompanying materials are made available

     6 * under the terms of "Eclipse Public License v1.0"

     7 * which accompanies this distribution, and is available

     8 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     9 *

    10 * Initial Contributors:

    11 * Nokia Corporation - initial contribution.

    12 *

    13 * Contributors:

    14 * 

    15 * Description:

    16 *

    17 */

    18 using System;

    19 using System.Collections;

    20 using System.Text;

    21 using System.Text.RegularExpressions;

    22 using System.ComponentModel;

    23 using SymbianUtils.Range;

    24 using SymbianUtils.Strings;

    25 using SymbianStructuresLib.Arm;

    26 using SymbianStructuresLib.MemoryModel;

    27 using SymbianStructuresLib.Debug.Symbols.Constants;

    28 using SymbianStructuresLib.Debug.Common.Id;

    29 

    30 namespace SymbianStructuresLib.Debug.Symbols

    31 {

    32 	internal class InternedName

    33     {

    34         #region Static constructors

    35         public static InternedName NewExplicit( string aText )

    36         {

    37             InternedName ret = new InternedName( aText, string.Empty );

    38             return ret;

    39         }

    40 

    41         public static InternedName New( string aText )

    42         {

    43             InternedName ret = new InternedName( aText );

    44             return ret;

    45         }

    46         #endregion

    47 

    48         #region Constructors

    49         private InternedName( string aName )

    50         {

    51             int doubleColonPos = aName.LastIndexOf( "::" );

    52             if ( doubleColonPos > 0 )

    53             {

    54                 iNamePart1 = aName.Substring( 0, doubleColonPos + 2 );

    55                 iNamePart2 = aName.Substring( doubleColonPos + 2 );

    56             }

    57             else if ( aName.Contains( "typeinfo for " ) )

    58             {

    59                 iNamePart1 = "typeinfo for ";

    60                 iNamePart2 = aName.Substring( 13 );

    61             }

    62             else if ( aName.Contains( "vtable for " ) )

    63             {

    64                 iNamePart1 = "vtable for ";

    65                 iNamePart2 = aName.Substring( 11 );

    66             }

    67             else

    68             {

    69                 iNamePart1 = aName;

    70                 iNamePart2 = string.Empty;

    71             }

    72 

    73             // Record intern stats

    74 #if TRACK_INTERNING_STATISTICS

    75             UpdateStatistics();

    76 #endif

    77 

    78             // Now get the interned strings

    79             iNamePart1 = string.Intern( iNamePart1 );

    80             iNamePart2 = string.Intern( iNamePart2 );

    81         }

    82 

    83         private InternedName( string aPart1, string aPart2 )

    84         {

    85             iNamePart1 = string.Intern( aPart1 );

    86             iNamePart2 = string.Intern( aPart2 );

    87         }

    88         #endregion

    89 

    90         #region API

    91         public static bool IsFunction( string aText )

    92         {

    93             bool ret = aText.Contains( "(" ) && aText.Contains( ")" );

    94             return ret;

    95         }

    96 

    97         public static bool IsVTable( string aText )

    98         {

    99             bool ret = StringUtils.StartsWithAny( SymbolConstants.KVTableOrTypeInfoPrefixes, aText );

   100             return ret;

   101         }

   102 

   103         public static bool IsReadOnly( string aText )

   104         {

   105             bool ret = aText.StartsWith( SymbolConstants.KPrefixReadonly );

   106             return ret;

   107         }

   108 

   109         public static bool IsSubObject( string aText )

   110         {

   111             bool ret = aText.EndsWith( SymbolConstants.KPrefixSubObject );

   112             return ret;

   113         }

   114 

   115         public void PrintStats()

   116         {

   117 #if TRACK_INTERNING_STATISTICS

   118 #endif

   119         }

   120         #endregion

   121 

   122         #region Internal methods

   123 #if TRACK_INTERNING_STATISTICS

   124         private void UpdateStatistics()

   125         {

   126             UpdateStatistics( iNamePart1 );

   127             UpdateStatistics( iNamePart2 );

   128         }

   129 

   130         private void UpdateStatistics( string aText )

   131         {

   132             if ( string.IsInterned( aText ) != null )

   133             {

   134                 InternStats[ 0 ].Update( aText ); 

   135             }

   136             else

   137             {

   138                 InternStats[ 1 ].Update( aText );

   139             }

   140         }

   141 #endif

   142         #endregion

   143 

   144         #region From System.Object

   145         public override string ToString()

   146         {

   147             return iNamePart1 + iNamePart2;

   148         }

   149         #endregion

   150 

   151         #region Internal classes

   152 #if TRACK_INTERNING_STATISTICS

   153         private class InternStatistics

   154         {

   155             public void Update( string aText )

   156             {

   157                 ++iCount;

   158                 iSize += (uint) ( aText.Length * 2 );

   159             }

   160             //

   161             private uint iCount = 0;

   162             private ulong iSize = 0;

   163         }

   164 #endif

   165         #endregion

   166 

   167         #region Data members

   168         private readonly string iNamePart1;

   169         private readonly string iNamePart2;

   170 

   171 #if TRACK_INTERNING_STATISTICS

   172         private static readonly InternStatistics[] InternStats = new InternStatistics[] { new InternStatistics(), new InternStatistics() };

   173 #endif

   174        #endregion

   175     }

   176 }