/// <summary>
/// allocate size bytes starting at a particular address
/// </summary>
/// <param name="start"></param>
/// <param name="size"></param>
public MemoryBlock(ulong start, ulong size)
{
#if !MONO
Start = (ulong)Kernel32.VirtualAlloc(Z.UU(start), Z.UU(size),
Kernel32.AllocationType.RESERVE | Kernel32.AllocationType.COMMIT,
Kernel32.MemoryProtection.NOACCESS);
if (Start == 0)
{
throw new InvalidOperationException("VirtualAlloc() returned NULL");
}
if (start != 0)
{
End = start + size;
}
else
{
End = Start + size;
}
Size = End - Start;
#else
Start = (ulong)LibC.mmap(ZC.U(start), ZC.U(size), 0, LibC.MapType.MAP_ANONYMOUS, -1, IntPtr.Zero);
if (Start == 0)
{
throw new InvalidOperationException("mmap() returned NULL");
}
End = Start + size;
Size = End - Start;
#endif
}
private void Dispose(bool disposing)
{
if (Start != 0)
{
#if !MONO
Kernel32.VirtualFree(Z.UU(Start), UIntPtr.Zero, Kernel32.FreeType.RELEASE);
#else
LibC.munmap(ZC.U(Start), (UIntPtr)Size);
#endif
Start = 0;
}
}