www.pudn.com > CS.rar > GCInfo.cs
//-----------------------------------------------------------------------------
// Code from _Programming the .NET Compact Framework with C#_
// and _Programming the .NET Compact Framework with VB_
// (c) Copyright 2002-2004 Paul Yao and David Durant.
// All rights reserved.
//-----------------------------------------------------------------------------
using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
namespace GCInfo
{
///
/// Summary description for Form1.
///
public class FormMain : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label labMaxGenerations;
private System.Windows.Forms.Button cmdCollect;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label labTotalMemory;
private System.Windows.Forms.Button cmdWaitForFinalizers;
private System.Windows.Forms.Button cmdAllocFree;
private System.Windows.Forms.TextBox textNumObjects;
private System.Windows.Forms.ComboBox cboxObjects;
private System.Windows.Forms.MainMenu mainMenu1;
public FormMain()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
int c = GC.MaxGeneration;
labMaxGenerations.Text = c.ToString();
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.mainMenu1 = new System.Windows.Forms.MainMenu();
this.label1 = new System.Windows.Forms.Label();
this.labMaxGenerations = new System.Windows.Forms.Label();
this.cmdCollect = new System.Windows.Forms.Button();
this.button1 = new System.Windows.Forms.Button();
this.label2 = new System.Windows.Forms.Label();
this.labTotalMemory = new System.Windows.Forms.Label();
this.cmdWaitForFinalizers = new System.Windows.Forms.Button();
this.cmdAllocFree = new System.Windows.Forms.Button();
this.textNumObjects = new System.Windows.Forms.TextBox();
this.cboxObjects = new System.Windows.Forms.ComboBox();
//
// label1
//
this.label1.Location = new System.Drawing.Point(16, 16);
this.label1.Text = "MaxGeneration:";
this.label1.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// labMaxGenerations
//
this.labMaxGenerations.Location = new System.Drawing.Point(128, 16);
this.labMaxGenerations.Size = new System.Drawing.Size(40, 20);
//
// cmdCollect
//
this.cmdCollect.Location = new System.Drawing.Point(24, 48);
this.cmdCollect.Size = new System.Drawing.Size(120, 20);
this.cmdCollect.Text = "Collect";
this.cmdCollect.Click += new System.EventHandler(this.cmdCollect_Click);
//
// button1
//
this.button1.Location = new System.Drawing.Point(24, 88);
this.button1.Size = new System.Drawing.Size(120, 20);
this.button1.Text = "GetTotalMemory";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// label2
//
this.label2.Location = new System.Drawing.Point(32, 120);
this.label2.Size = new System.Drawing.Size(88, 20);
this.label2.Text = "Total Memory:";
//
// labTotalMemory
//
this.labTotalMemory.Location = new System.Drawing.Point(128, 120);
this.labTotalMemory.Size = new System.Drawing.Size(64, 20);
//
// cmdWaitForFinalizers
//
this.cmdWaitForFinalizers.Location = new System.Drawing.Point(24, 152);
this.cmdWaitForFinalizers.Size = new System.Drawing.Size(168, 20);
this.cmdWaitForFinalizers.Text = "WaitForPendingFinalizers";
this.cmdWaitForFinalizers.Click += new System.EventHandler(this.cmdWaitForFinalizers_Click);
//
// cmdAllocFree
//
this.cmdAllocFree.Enabled = false;
this.cmdAllocFree.Location = new System.Drawing.Point(40, 232);
this.cmdAllocFree.Text = "Allocate";
this.cmdAllocFree.Click += new System.EventHandler(this.cmdAllocFree_Click);
//
// textNumObjects
//
this.textNumObjects.Location = new System.Drawing.Point(40, 192);
this.textNumObjects.Size = new System.Drawing.Size(48, 22);
this.textNumObjects.Text = "";
this.textNumObjects.TextChanged += new System.EventHandler(this.textNumObjects_TextChanged);
//
// cboxObjects
//
this.cboxObjects.Items.Add("Brushes");
this.cboxObjects.Items.Add("Controls");
this.cboxObjects.Items.Add("Graphics");
this.cboxObjects.Items.Add("Integers (in Array)");
this.cboxObjects.Items.Add("Longs (In Array)");
this.cboxObjects.Location = new System.Drawing.Point(104, 192);
this.cboxObjects.Size = new System.Drawing.Size(112, 22);
this.cboxObjects.SelectedIndexChanged += new System.EventHandler(this.cboxObjects_SelectedIndexChanged);
//
// FormMain
//
this.Controls.Add(this.cboxObjects);
this.Controls.Add(this.textNumObjects);
this.Controls.Add(this.cmdAllocFree);
this.Controls.Add(this.cmdWaitForFinalizers);
this.Controls.Add(this.labTotalMemory);
this.Controls.Add(this.label2);
this.Controls.Add(this.button1);
this.Controls.Add(this.cmdCollect);
this.Controls.Add(this.labMaxGenerations);
this.Controls.Add(this.label1);
this.Menu = this.mainMenu1;
this.MinimizeBox = false;
this.Text = "GC Info";
}
#endregion
///
/// The main entry point for the application.
///
static void Main()
{
Application.Run(new FormMain());
}
private void cmdCollect_Click(object sender, System.EventArgs e)
{
GC.Collect();
}
private void button1_Click(object sender, System.EventArgs e)
{
long lmem = GC.GetTotalMemory(false);
labTotalMemory.Text = lmem.ToString("D");
}
private void cmdWaitForFinalizers_Click(object sender, System.EventArgs e)
{
GC.WaitForPendingFinalizers();
}
private int cObjects = 0;
private int iItem = -1;
private bool bAllocate = true;
private void SetButtonState()
{
cmdAllocFree.Enabled = (iItem >= -1 && cObjects > 0);
}
private void textNumObjects_TextChanged(object sender, System.EventArgs e)
{
try
{
cObjects = int.Parse(textNumObjects.Text);
}
catch
{
cObjects = 0;
}
SetButtonState();
}
private void cboxObjects_SelectedIndexChanged(object sender, System.EventArgs e)
{
iItem = cboxObjects.SelectedIndex;
SetButtonState();
}
Brush [] abr = null;
Control [] actrl = null;
Graphics [] ag = null;
int [] ai = null;
long [] al = null;
private void cmdAllocFree_Click(object sender, System.EventArgs e)
{
if (bAllocate)
{
bAllocate = false;
cmdAllocFree.Text = "Free";
cboxObjects.Enabled = false;
object objCurrent = null;
int cbObject = 0;
int i;
switch (iItem)
{
case 0:
abr = new SolidBrush [cObjects];
objCurrent = abr;
cbObject = Marshal.SizeOf(abr[0].GetType());
break;
case 1:
actrl = new Control [cObjects];
objCurrent = actrl;
cbObject = Marshal.SizeOf(actrl[0].GetType());
break;
case 2:
ag = new Graphics[cObjects];
objCurrent = ag;
cbObject = Marshal.SizeOf(ag[0].GetType());
break;
case 3:
ai = new int[cObjects];
for (i = 0; i < cObjects; i++)
ai[i] = i + 3;
objCurrent = ai;
cbObject = Marshal.SizeOf(ai[0].GetType());
break;
case 4:
al = new long[cObjects];
objCurrent = al;
cbObject = Marshal.SizeOf(al[0].GetType());
break;
}
int cbTot = cbObject * cObjects;
MessageBox.Show("Allocated " + cbTot.ToString() + " bytes");
}
else
{
bAllocate = true;
cmdAllocFree.Text = "Allocate";
cboxObjects.Enabled = true;
abr = null;
actrl = null;
ag = null;
ai = null;
al = null;
MessageBox.Show("Freed stuff");
}
}
} // class
} // namespace