public static void TestArrayCopyBlockCopy1(int iterationCount = 1)
{
Console.WriteLine("---------------------------------------------------------------");
Console.WriteLine("Copy array using block copy -- :");
Console.WriteLine("Generating data ... ");
dh.StartWatch();
int n = 1024 * 1024;
RandomIteratorUsafeXorshiftEn rnd = new RandomIteratorUsafeXorshiftEn(1024 * 1024);
rnd.Reset();
byte[] destArray = new byte[n];
byte[] sourceArra = new byte[256];
Buffer.BlockCopy(rnd.values, 0, sourceArra, 0, 256);
byte index = rnd.bNext();
int position = 0;
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
Console.WriteLine("Executing - > ... ");
dh.StartWatch();
for (int k = iterationCount * 1024; k > 0; --k)
{
position = n;
//index = rnd.bNext();
index = 1;
position -= index;
while (position > 0)
{
Buffer.BlockCopy(sourceArra, 0, destArray, position, index);
index = rnd.bNext();
position -= index;
}
}
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
destArray = null;
GarbachCollectorHelper.GBForceRun();
}
public static void TestArrayCopyIndexing1(int iterationCount = 1)
{
Console.WriteLine("---------------------------------------------------------------");
Console.WriteLine("Copy array using for(i++) :");
Console.WriteLine("Generating data ... ");
dh.StartWatch();
int n = 1024 * 1024 * 1024;
RandomIteratorUsafeXorshiftEn rnd = new RandomIteratorUsafeXorshiftEn(1024 * 1024);
rnd.Reset();
byte[] destArray = new byte[1024 * 1024 * 1024];
byte[] sourceArra = new byte[256];
Buffer.BlockCopy(rnd.values, 0, sourceArra, 0, 256);
byte index = rnd.bNext();
int position = 0;
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
Console.WriteLine("Executing --i > ... ");
dh.StartWatch();
for (int k = iterationCount; k > 0; --k)
{
position = n;
while (position - index >= 0)
{
for (byte j = index; j > 0; --j)
{
--position;
destArray[position] = sourceArra[j];
}
index = rnd.bNext();
}
}
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
destArray = null;
GarbachCollectorHelper.GBForceRun();
}
unsafe public static void TestArrayCopyFixed1(int iterationCount = 1)
{
Console.WriteLine("---------------------------------------------------------------");
Console.WriteLine("Copy array using pointer copy ++:");
Console.WriteLine("Generating data ... ");
dh.StartWatch();
int n = 1024 * 1024 * 1024;
RandomIteratorUsafeXorshiftEn rnd = new RandomIteratorUsafeXorshiftEn(1024 * 1024);
rnd.Reset();
byte[] destArray = new byte[1024 * 1024 * 1024];
byte[] sourceArray = new byte[256];
Buffer.BlockCopy(rnd.values, 0, sourceArray, 0, 256);
byte index = rnd.bNext();
byte *endDest = null;
byte *endSrc = null;
byte *currentSrc = null;
byte *currentDest = null;
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
Console.WriteLine("Executing + ... ");
dh.StartWatch();
for (int k = iterationCount; k != 0; --k)
{
endDest = null;
currentSrc = null;
currentDest = null;
index = rnd.bNext();
fixed(byte *startDest = &destArray[0], startSource = &sourceArray[0])
{
endDest = startDest + n - 1;
endSrc = startSource + index;
currentDest = startDest;
do
{
currentSrc = startSource;
endSrc = startSource + index;
while (currentSrc <= endSrc)
{
*currentDest = *currentSrc;
++currentDest;
++currentSrc;
}
index = rnd.bNext();
}while ((currentDest + index) <= endDest);
}
}
dh.StoptWatch();
Console.WriteLine(dh.GetMessage());
destArray = null;
GarbachCollectorHelper.GBForceRun();
}
