RE: XmlSerialization Object Memory Usage

Looks like on XP SP2 I only come up with 2 sets of memory sizes, one for the
manually constructed object and one for those generated via the
XmlSerializer. The 2.0 Framework seems to make the analyzation completely
different.

I e-mailed you the code and results, following is the code.

using System;
using System.IO;
using System.Collections;
using System.Xml.Serialization;

namespace Memory
{
public class Anomoly
{
public static void Main( )
{
//Test1();
Test2();
//Test3();
//Test4();
}

public static void Test1( )
{
Hashtable storage = new Hashtable();
for( int i = 0; i < 10000; i++ )
{
ComplexObject tempVehicle = BuildObject();
storage.Add( i, tempVehicle );
}
GC.Collect();
Console.WriteLine( "Storage has been populated" );
Console.Read();
}

public static void Test2( )
{
Hashtable storage = new Hashtable();
for( int i = 0; i < 10000; i++ )
{
ComplexObject tempVehicle = BuildObject();
storage.Add( i, tempVehicle.DeepClone() );
}
GC.Collect();
Console.WriteLine( "Storage has been populated with manually created
clones" );
Console.Read();
}

public static void Test3( )
{
StreamWriter serializedWriter = new StreamWriter("C:\\Object.xml");
XmlSerializer serializer = new XmlSerializer( typeof(ComplexObject) );
ComplexObject objectToSerialize = BuildObject();
serializer.Serialize( serializedWriter, objectToSerialize );
serializedWriter.Close();

StreamReader serializedReader = new StreamReader( "C:\\Object.xml" );
string serializedString = serializedReader.ReadToEnd();
serializedReader.Close();
Hashtable storage = new Hashtable();
for( int i = 0; i < 10000; i++ )
{
StringReader objectReader = new StringReader( serializedString );
ComplexObject tempVehicle = serializer.Deserialize( objectReader )
as ComplexObject;
storage.Add( i, tempVehicle );
objectReader.Close();
}
GC.Collect();
Console.WriteLine( "Storage has been populated with XmlDeserialized
Objects" );
Console.Read();
}

public static void Test4( )
{
StreamWriter serializedWriter = new StreamWriter("C:\\Object.xml");
XmlSerializer serializer = new XmlSerializer( typeof(ComplexObject) );
ComplexObject objectToSerialize = BuildObject();
serializer.Serialize( serializedWriter, objectToSerialize );
serializedWriter.Close();

StreamReader serializedReader = new StreamReader( "C:\\Object.xml" );
string serializedString = serializedReader.ReadToEnd();
serializedReader.Close();
Hashtable storage = new Hashtable();
for( int i = 0; i < 10000; i++ )
{
StringReader objectReader = new StringReader( serializedString );
ComplexObject tempVehicle = serializer.Deserialize( objectReader )
as ComplexObject;
storage.Add( i, tempVehicle.DeepClone() );
objectReader.Close();
}
GC.Collect();
Console.WriteLine( "Storage has been populated with XmlDeserialized
Objects" );
Console.Read();
}


private static ComplexObject BuildObject()
{
SimpleObject tempPerson = new SimpleObject();
tempPerson.Irritable = true;
tempPerson.Age = 45;
tempPerson.Name = "John";

ComplexObject rc = new ComplexObject();
rc.Wheels = 4;
rc.Model = "Ford";
rc.Available = true;
rc.Person = tempPerson;
return rc;
}
}
public class SimpleObject
{
public SimpleObject(){}

private int age = 0;
private string name = string.Empty;
private bool irritable = false;

public int Age
{
get{return age;}
set{age = value;}
}

public string Name
{
get{return name;}
set{name = value;}
}

public bool Irritable
{
get{return irritable;}
set{irritable = value;}
}
}

public class ComplexObject
{
public ComplexObject(){}

private SimpleObject person = null;
private int wheels = 0;
private string model = string.Empty;
private bool available = false;

public SimpleObject Person
{
get{return person;}
set{person = value;}
}

public int Wheels
{
get{return wheels;}
set{wheels = value;}
}

public string Model
{
get{return model;}
set{model = value;}
}

public bool Available
{
get{return available;}
set{available = value;}
}

public ComplexObject DeepClone()
{
ComplexObject rc = new ComplexObject();
rc.Wheels = wheels;
rc.Model = model;
rc.Available = available;

if( null != person )
{
SimpleObject tempPerson = new SimpleObject();
tempPerson.Irritable = Person.Irritable;
tempPerson.Age = Person.Age;
tempPerson.Name = Person.Name;
rc.Person = tempPerson;
}
return rc;
}
}
}

.

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