public void Compare()
{
Random random = new Random();
Stopwatch totalStopwatch = new Stopwatch();
totalStopwatch.Start();
Stopwatch sw1 = new Stopwatch();
Stopwatch sw2 = new Stopwatch();
Stopwatch sw3 = new Stopwatch();
Stopwatch sw4 = new Stopwatch();
var flags = new int[] { 0, 1, 2, 3 };
for (int i = 0; i < 1024 * 256 * 32; i++)
{
byte[] x;
byte[] y;
if (random.Next(0, 2) == 0)
{
var length = random.Next(0, 1024);
x = new byte[length];
y = new byte[length];
}
else
{
x = new byte[random.Next(0, 1024)];
y = new byte[random.Next(0, 1024)];
}
if (random.Next(0, 2) == 0)
{
random.NextBytes(x);
random.NextBytes(y);
}
int result1 = 0;
int result2 = 0;
int result3 = 0;
int result4 = 0;
var maxLength = Math.Min(x.Length, y.Length);
random.Shuffle(flags);
foreach (var index in flags)
{
if (index == 0)
{
sw1.Start();
result1 = Unsafe.Compare(x, y);
sw1.Stop();
}
else if (index == 1)
{
sw2.Start();
result2 = Unsafe.Compare2(x, y);
sw2.Stop();
}
else if (index == 2)
{
sw3.Start();
result3 = Unsafe.Compare(x, 0, y, 0, maxLength);
sw3.Stop();
}
else if (index == 3)
{
sw4.Start();
result4 = Unsafe.Compare2(x, 0, y, 0, maxLength);
sw4.Stop();
}
}
Assert.IsTrue(result1 == result2);
Assert.IsTrue(result3 == result4);
if (totalStopwatch.ElapsedMilliseconds > 1000 * 60)
{
break;
}
}
StringBuilder sb = new StringBuilder();
sb.AppendLine("Native Compare: " + sw1.Elapsed.ToString());
sb.AppendLine("Native Compare2: " + sw2.Elapsed.ToString());
sb.AppendLine("Native Compare: " + sw3.Elapsed.ToString());
sb.AppendLine("Native Compare2: " + sw4.Elapsed.ToString());
Console.WriteLine(sb.ToString());
}
