Created
March 12, 2015 18:46
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using System; | |
using System.IO; | |
using System.Diagnostics; | |
public class HelloWorld | |
{ | |
static public void Main () | |
{ | |
Console.CursorVisible = false; | |
var ScreenWidth = 640; | |
var ScreenHeight = 480; | |
var BytesPerPixel = 2; | |
var random = new Random(); | |
var buffer = new Byte[ScreenWidth * ScreenHeight * BytesPerPixel ]; | |
Stopwatch stopWatch = new Stopwatch(); | |
stopWatch.Start(); | |
for(var i = 0; i < 10; i++) { | |
using (var fb = new FileStream("/dev/fb0", FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite)) | |
{ | |
random.NextBytes(buffer); | |
fb.Write(buffer, 0, buffer.Length); | |
fb.Close(); | |
} | |
} | |
/* | |
var random = new Random(); | |
var buffer = new Byte[ScreenWidth * ScreenHeight * BytesPerPixel ]; | |
using(var mmf = MemoryMappedFile.CreateFromFile("/dev/fb0", FileMode.Open)) | |
using(var accessor = mmf.CreateViewAccessor()) | |
{ | |
for(var i = 0; i < 100; i++) { | |
random.NextBytes(buffer); | |
accessor.WriteArray(0, buffer, 0, buffer.Length); | |
} | |
} | |
/**/ | |
stopWatch.Stop(); | |
TimeSpan ts = stopWatch.Elapsed; | |
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", | |
ts.Hours, ts.Minutes, ts.Seconds, | |
ts.Milliseconds / 10); | |
Console.WriteLine("RunTime " + elapsedTime); | |
Console.CursorVisible = true; | |
} | |
} |
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