public unsafe void EqualityTest1()
{
sbyte *sample = stackalloc sbyte[4];
int checksum = 0;
int address1 = (int)sample;
Console.WriteLine("Original Address: {0:X}", address1);
checksum += address1;
IntPtr address2 = new IntPtr(sample);
Console.WriteLine("IntPtr Address: {0:X}", address2.ToInt32());
checksum += address2.ToInt32();
SBytePointer address3 = new SBytePointer(address2);
Console.WriteLine("SBytePointer Address (from IntPtr): {0:X}", address3.ToInt32());
checksum += address3.ToInt32();
SBytePointer address4 = new SBytePointer(address1);
Console.WriteLine("SBytePointer Address (from Int32): {0:X}", address4.ToInt32());
checksum += address4.ToInt32();
int checksumDigest = checksum / 4;
Assert.AreEqual(checksumDigest, address1);
Assert.AreEqual(checksumDigest, address2.ToInt32());
Assert.AreEqual(checksumDigest, address3.ToInt32());
Assert.AreEqual(checksumDigest, address4.ToInt32());
}
public unsafe void AddressTest1()
{
sbyte * sample = stackalloc sbyte[4];
SBytePointer a = new SBytePointer(sample);
SBytePointer b = (a + 1);
Console.WriteLine("Address offset: {0}", b.ToInt32() - a.ToInt32());
Assert.AreEqual(sizeof(sbyte), b.ToInt32() - a.ToInt32());
Assert.False(Object.ReferenceEquals(a, b));
// xPlatform's typed pointers are value type.
SBytePointer c = new SBytePointer(sample + 1);
SBytePointer d = (++c);
Console.WriteLine("Address offset: {0}", d.ToInt32() - c.ToInt32());
Assert.AreEqual(0, d.ToInt32() - c.ToInt32());
Assert.False(Object.ReferenceEquals(c, d));
}
public unsafe void StackallocTest3()
{
const int bufferSize = 4;
sbyte * sample = stackalloc sbyte[bufferSize];
SBytePointer pointer = new SBytePointer(sample);
sbyte[] results = new sbyte[bufferSize];
for (int i = 0; i < bufferSize; i++)
{
results[i] = *(sample + i) = GenerateRandomNumber();
}
// Pointer conversion test
for (int i = 0; i < bufferSize; i++)
{
object x = results[i];
object y = *(sbyte *)(pointer + i);
Console.WriteLine("[{0}] <Left: {1}> {2} <Right: {3}>", i, x, x.Equals(y) ? "==" : "<>", y);
Assert.AreEqual(x, y);
}
}
public unsafe void StackallocTest4()
{
const int bufferSize = 4;
sbyte * sample = stackalloc sbyte[bufferSize];
SBytePointer pointer = new SBytePointer(sample);
sbyte[] results = new sbyte[bufferSize];
// SetData method
for (int i = 0; i < bufferSize; i++)
{
pointer.SetData(results[i] = GenerateRandomNumber(), i);
}
// GetData method
for (int i = 0; i < bufferSize; i++)
{
object x = results[i];
object y = pointer.GetData(i);
Console.WriteLine("[{0}] <Left: {1}> {2} <Right: {3}>", i, x, x.Equals(y) ? "==" : "<>", y);
Assert.AreEqual(x, y);
}
}
public unsafe void StackallocTest5()
{
const int bufferSize = 4;
sbyte * sample = stackalloc sbyte[bufferSize];
SBytePointer pointer = new SBytePointer(sample);
sbyte[] results = new sbyte[bufferSize];
// Indexer based memory writing
for (int i = 0; i < bufferSize; i++)
{
results[i] = pointer[i] = GenerateRandomNumber();
}
// Indexer based memory navigation
for (int i = 0; i < bufferSize; i++)
{
object x = results[i];
object y = pointer[i];
Console.WriteLine("[{0}] <Left: {1}> {2} <Right: {3}>", i, x, x.Equals(y) ? "==" : "<>", y);
Assert.AreEqual(x, y);
}
}
public void _memccpyTest()
{
GlobalHeapAnsiString string1 = new GlobalHeapAnsiString("The quick brown dog jumps over the lazy fox");
GlobalHeapAnsiString buffer = new GlobalHeapAnsiString(61);
SBytePointer pdest = new SBytePointer();
Console.Write("Function: _memccpy 60 characters or to character 's'\n");
Console.Write("Source: {0}\n", string1.ToString());
pdest = msvcrt._memccpy(buffer, string1, 's', 60u);
pdest.SetData(0);
Console.Write("Result: {0}\n", buffer.ToString());
Console.Write("Length: {0} characters\n", msvcrt.strlen(buffer.Address));
Assert.AreEqual("The quick brown dog jumps over the lazy fox", string1.ToString());
Assert.AreEqual("The quick brown dog jumps", buffer.ToString());
Assert.AreEqual(25u, (uint)msvcrt.strlen(buffer.Address));
string1.Dispose();
buffer.Dispose();
pdest = null;
}
