public override int Read(byte[] buffer, int offset, int count)
{
if (!pageInfo.Contains(Position, count)) //Try to cache page
{
//Update pages and recheck before throwing
process.UpdatePages();
if (!IsInPages(Position))
{
throw new Exception();
}
//Dump page
pageInfo = process.Pages.First(_page => _page.Contains(Position, count));
var _oldPos = Position;
Position = pageInfo.BaseAddress.ToInt64();
pageData = new byte[pageInfo.RegionSize.ToInt64()];
base.Read(pageData, 0, pageData.Length); //Read whole page
Position = _oldPos; //Restore former position
}
var pageOffset = Position - pageInfo.BaseAddress.ToInt64();
var _count = (int)Math.Min(count, pageInfo.RegionSize.ToInt64() - pageOffset);
Array.Copy(pageData, pageOffset, buffer, offset, _count);
Position += _count;
return(_count);
}
public CachedStreamMemory(IMemory mem, IProcess proc) : base(mem, proc)
{
pageInfo = new WinAPI.MEMORY_BASIC_INFORMATION()
{
RegionSize = IntPtr.Zero
};
pageData = null;
}
