unsafe public RandomIteratorUsafeXorshift(int capasity)
{
length = capasity;
values = new byte[length];
PinBuffer(values);
rndXorshiftUnrolled64 = new XorshiftUnrolled64();
}
public static void TestRandomGeneratorRndXorshift()
{
int randomValue = 0;
Console.WriteLine("Test Random generator RndXorshift bool: ");
XorshiftUnrolled64 rndXorshift = new XorshiftUnrolled64();
byte[] buffer = new byte[1024 * 1024];
char[] bufferChar = new char[1024 * 1024];
GCHandle gchBuffer = GCHandle.Alloc(buffer, GCHandleType.Pinned);
GCHandle gchBufferChar = GCHandle.Alloc(bufferChar, GCHandleType.Pinned);
IntPtr pAddr = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, 0);
IntPtr pAddrChar = Marshal.UnsafeAddrOfPinnedArrayElement(bufferChar, 0);
dh.StartWatch();
unsafe
{
//fixed (byte* pStart = buffer)
{
byte * pStart = (byte *)pAddr.ToPointer();
byte * pEnd = pStart + buffer.Length;
ulong *plStart = (ulong *)pStart;
ulong *plEnd = (ulong *)pEnd;
byte * pCurrent = pStart;
for (int i = 0; i < 20000; i++)
{
pCurrent = pStart;
//rndXorshift.NextBytes(buffer);
rndXorshift.FillBufferEx(plStart, plEnd);
/*
* while (pCurrent <= pEnd)
* {
* //randomValue = *pCurrent & 100000;
* randomValue = *pCurrent;
* pCurrent++;
* }
*/
}
}
}
dh.StoptWatch();
if (gchBuffer.IsAllocated)
{
gchBuffer.Free();
}
Console.WriteLine(dh.GetMessage());
}
public static void TestRandomGeneratorRndXorshiftByte()
{
int randomValue = 0;
Console.WriteLine("Test RndXorshift generator bytes: ");
dh.StartWatch();
XorshiftUnrolled64 rndXorshift = new XorshiftUnrolled64();
byte[] buffer = new byte[1024 * 1024];
//GCHandle gchBuffer = GCHandle.Alloc(buffer, GCHandleType.Pinned);
for (int i = 0; i < 20000; i++)
{
rndXorshift.NextBytes(buffer);
/*
* foreach (var value in buffer)
* {
* randomValue = value;
* }
*/
}
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
Console.WriteLine("Test Fast Random generator bytes: ");
dh.StartWatch();
FastRandom fastRandom = new FastRandom();
byte[] buffer1 = new byte[1024 * 1024];
//GCHandle gchBuffer = GCHandle.Alloc(buffer, GCHandleType.Pinned);
for (int i = 0; i < 20000; i++)
{
fastRandom.NextBytes(buffer1);
/*
* foreach (var value in buffer)
* {
* randomValue = value;
* }
*/
}
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
Console.WriteLine("Test Random generator bytes: ");
Random random = new Random();
byte[] buffer2 = new byte[1024 * 1024];
//GCHandle gchBuffer = GCHandle.Alloc(buffer, GCHandleType.Pinned);
for (int i = 0; i < 20000; i++)
{
random.NextBytes(buffer2);
/*
* foreach (var value in buffer)
* {
* randomValue = value;
* }
*/
}
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
}
