I'm following the Profiling Tutorial here:
http://msdn.microsoft.com/en-us/magazine/cc337887.aspx
I've tried to profile the project by using CPU sampling.
MSDN Results:
My Results:
I'm expecting to see System.Drawing.Bitmap.SetPixel instead of the [System.Drawing.ni.dll].
As recommended by this post, I have:
- Clicked the "Show All Code" link
- Disabled "Just My Code"
- Checked "Microsoft Symbol Serves" in Tools > Options > Debugging > Symbols, restarted visual studio and ran the report again.
Output (after following above steps):
Failed to load symbols for C:\Windows\assembly\NativeImages_v2.0.50727_64\System.Drawing\8b88ae6d063a9d8ffc2f312af5d40ce5\System.Drawing.ni.dll
Loaded symbols from report for C:\Windows\Microsoft.NET\Framework64\v2.0.50727\mscorwks.dll
Loaded symbols from report for C:\Windows\WinSxS\amd64_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.9200.16518_none_726fbfe0cc22f012\GdiPlus.dll
Loaded symbols from report for C:\Windows\System32\ntdll.dll
Loaded symbols from report for C:\Windows\System32\KernelBase.dll
Loaded symbols from report for C:\Windows\System32\msvcrt.dll
Failed to load symbols for C:\Windows\assembly\NativeImages_v2.0.50727_64\mscorlib\061d0414114241f4f2fe0908bf53b076\mscorlib.ni.dll
Failed to load symbols for C:\Windows\assembly\NativeImages_v2.0.50727_64\System.Windows.Forms\01a89d2c3499af1e3378797d51eec364\System.Windows.Forms.ni.dll
Loaded symbols from report for C:\Windows\System32\user32.dll
Loaded symbols from report for C:\Windows\System32\gdi32.dll
Loaded symbols from report for C:\Windows\System32\kernel32.dll
Loaded symbols from report for C:\Windows\System32\uxtheme.dll
Loaded symbols from report for C:\Users\user\Desktop\VSTSProfiler\bin\Debug\Mandel.exe
Symbol information saved to report.
(The source code can be donwloaded from here:
http://download.microsoft.com/download/f/2/7/f279e71e-efb0-4155-873d-5554a0608523/MSDNMag2008_03.exe
After extracting, it will be in a folder called: VSTSProfiler. Regardless, here is the pasted source code in case it goes down:)
using System;
using System.Xml;
using System.Xml.Serialization;
using System.Diagnostics;
using System.Collections;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using System.Threading;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
using System.IO;
using System.Collections.Generic;
namespace Mandel
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
#region Auto
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.SuspendLayout();
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(392, 266);
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Mandel - Drawing...";
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
#endregion
Thread drawingThread = null;
double xLowBound = -2.1;
double yLowBound = -1.3;
double xUpperBound = 1;
double yUpperBound = 1.3;
string colorsMap = "Green.Map";
const bool COLOR = false;
//This timer will check whether the drawing thread is still working
//and update the title after it finishes:
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
private void Form1_Load(object sender, System.EventArgs e)
{
//Setup the timer and hook to it
timer.Interval = 200;
timer.Tick += OnTimer;
//Initialize and start the drawing thread:
this.drawingThread = new Thread(new ThreadStart(this.DrawMandel));
this.drawingThread.Start();
timer.Start();
}
private void OnTimer(object sender, EventArgs args)
{
if (this.drawingThread.IsAlive)
{
this.Text = "Mandel - Generating Fractal...";
}
else
{
timer.Stop();
this.Text = "Mandel - Ready";
}
}
private void DrawMandel()
{
for (int i = 0; i < 5; i++)
{ //This loop was added purposely to slow the program down to measure performance.
Color[] colors = ReadColorsMap(colorsMap);
Bitmap bitmap = new Bitmap(Width, Height);
//Uncomment the block below to avoid Bitmap.SetPixel:
//BitmapData bmpData = bitmap.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadWrite, bitmap.PixelFormat);
//IntPtr ptr = bmpData.Scan0;
//int pixels = bitmap.Width * bitmap.Height;
//Int32[] rgbValues = new Int32[pixels];
double xStart = xLowBound;
double yStart = yLowBound;
double xEnd = xUpperBound;
double yEnd = yUpperBound;
double deltaX = (xEnd - xStart) / Width;
double deltaY = (yEnd - yStart) / Height;
double x = xStart;
double y = yStart;
for (int column = 1; column < Width; column++)
{
y = yStart;
for (int row = 1; row < Height; row++)
{
double x1 = 0;
double y1 = 0;
int color = 0;
int dept = 0;
do
{
dept++;
double temp = (x1 * x1) - (y1 * y1) + x;
y1 = 2 * x1 * y1 + y;
x1 = temp;
double percentFactor = dept / (100.0);
color = ((int)(percentFactor * 255));
}
while (dept < 100 && Math.Sqrt((x1 * x1) + (y1 * y1)) < 2);
//Comment this line to avoid calling Bitmap.SetPixel:
bitmap.SetPixel(column, row, colors[color]);
//Uncomment the block below to avoid Bitmap.SetPixel:
//rgbValues[row * Width + column] = colors[color].ToArgb();
y += deltaY;
}
x += deltaX;
}
//Uncomment the block below to avoid Bitmap.SetPixel:
//Marshal.Copy(rgbValues, 0, ptr, pixels);
//bitmap.UnlockBits(bmpData);
BackgroundImage = (Image)bitmap;
}
}
private Color[] ReadColorsMap(string Path)
{
try
{
Color[] colors = new Color[256];
List<string> colorLines = new List<string>();
//Read the color definitions:
using (StreamReader sr = new StreamReader(Path))
{
while (!sr.EndOfStream)
{
string s = sr.ReadLine();
if (!String.IsNullOrEmpty(s))
{
colorLines.Add(s.Trim());
}
}
}
//Parse the definitions and store them in "colors" array
if (colorLines.Count > colors.Length)
{
throw new Exception(string.Format("Too many colors"));
}
int colorIndex = 0;
foreach(string color in colorLines)
{
string[] values = color.Split(' ');
if (values.Length != 3)
{
throw new Exception(string.Format("Map line: '{0}'", color));
}
int red = int.Parse(values[0]);
int green = int.Parse(values[1]);
int blue = int.Parse(values[2]);
colors[colorIndex++] = Color.FromArgb(red, green, blue);
}
//Set the rest to black:
for (; colorIndex < colors.Length; colorIndex++)
{
colors[colorIndex] = Color.Black;
}
return colors;
}
catch(Exception ex)
{
throw new Exception("Invalid ColorMap file.", ex);
}
}
}
}
https://stackoverflow.com/questions/22404396
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