protected virtual void Dispose(bool disposing)
{
if (Ram != IntPtr.Zero)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
AMemoryWin32.Free(Ram);
}
else
{
Marshal.FreeHGlobal(Ram);
}
Ram = IntPtr.Zero;
}
}
public AMemory()
{
Manager = new AMemoryMgr();
Monitors = new Dictionary <int, ArmMonitor>();
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
Ram = AMemoryWin32.Allocate((IntPtr)AMemoryMgr.RamSize + AMemoryMgr.PageSize);
}
else
{
Ram = Marshal.AllocHGlobal((IntPtr)AMemoryMgr.RamSize + AMemoryMgr.PageSize);
}
RamPtr = (byte *)Ram;
}
public long GetHostPageSize()
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
return(AMemoryMgr.PageSize);
}
IntPtr MemAddress = new IntPtr(RamPtr);
IntPtr MemSize = new IntPtr(AMemoryMgr.RamSize);
long PageSize = AMemoryWin32.IsRegionModified(MemAddress, MemSize, Reset: false);
if (PageSize < 1)
{
throw new InvalidOperationException();
}
return(PageSize);
}
public (bool[], long) IsRegionModified(long Position, long Size)
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
return(null, 0);
}
long EndPos = Position + Size;
if ((ulong)EndPos < (ulong)Position)
{
return(null, 0);
}
if ((ulong)EndPos > AMemoryMgr.RamSize)
{
return(null, 0);
}
IntPtr MemAddress = new IntPtr(RamPtr + Position);
IntPtr MemSize = new IntPtr(Size);
int HostPageMask = HostPageSize - 1;
Position &= ~HostPageMask;
Size = EndPos - Position;
IntPtr[] Addresses = new IntPtr[(Size + HostPageMask) / HostPageSize];
AMemoryWin32.IsRegionModified(MemAddress, MemSize, Addresses, out int Count);
bool[] Modified = new bool[Addresses.Length];
for (int Index = 0; Index < Count; Index++)
{
long VA = Addresses[Index].ToInt64() - Ram.ToInt64();
Modified[(VA - Position) / HostPageSize] = true;
}
return(Modified, Count);
}
public bool IsRegionModified(long Position, long Size)
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
return(true);
}
long EndPos = Position + Size;
if ((ulong)EndPos < (ulong)Position)
{
return(false);
}
if ((ulong)EndPos > AMemoryMgr.RamSize)
{
return(false);
}
IntPtr MemAddress = new IntPtr(RamPtr + Position);
IntPtr MemSize = new IntPtr(Size);
return(AMemoryWin32.IsRegionModified(MemAddress, MemSize, Reset: true) != 0);
}