public override ExpressionDrawer.IDrawable Load(MemoryReader mreader, Debugger debugger,
string name, string type,
LoadCallback callback)
{
// NOTE: If the image is not created at the point of debugging, so the variable is
// uninitialized, the size may be out of bounds of int32 range. In this case the
// exception is thrown here and this is ok. However if there is some garbage in
// memory random size could be loaded here. Then also the memory probably points
// to some random place in memory (maybe protected?) so the result will probably
// be another exception which is fine or an image containing noise from memory.
ulong dataStart = ExpressionParser.GetPointer(debugger, name + ".DataStart");
ulong dataEnd = ExpressionParser.GetPointer(debugger, name + ".DataEnd");
ulong length = dataEnd - dataStart;
int cols = ExpressionParser.LoadSize(debugger, name + ".Cols");
int rows = ExpressionParser.LoadSize(debugger, name + ".Rows");
EnvDTE.Expression exp = debugger.GetExpression("(int)(" + name + ".Type())");
MatType mType = MatType.CV_8UC1;
if (exp.IsValidValue)
{
mType = (MatType)int.Parse(exp.Value);
}
byte[] memory = new byte[length];
bool isLoaded = false;
if (mreader != null)
{
ulong address = ExpressionParser.GetValueAddress(debugger, name + ".DataPointer[0]");
if (address == 0)
{
return(null);
}
isLoaded = mreader.ReadBytes(address, memory);
}
var pixelFormat = MatTypeToPixelFormat(mType);
Bitmap bmp = new Bitmap(
cols,
rows,
pixelFormat);
BitmapData data = bmp.LockBits(
new Rectangle(System.Drawing.Point.Empty, bmp.Size),
ImageLockMode.WriteOnly,
pixelFormat);
Marshal.Copy(memory, 0, data.Scan0, (int)length);
bmp.UnlockBits(data);
return(new ExpressionDrawer.Image(bmp));
}
public override bool ForEachMemoryBlock(MemoryReader mreader, Debugger debugger,
string name, string type,
MemoryReader.Converter <double> elementConverter,
MemoryBlockPredicate memoryBlockPredicate)
{
int size = LoadSize(debugger, name);
if (size <= 0)
{
return(true);
}
// TODO: All of the debugger-related things should be done
// in Initialize().
// TODO: Handle non-value types,
// It is not clear for now where the distinction should be made
// in the container or outside. When non-value types are stored
// the container effectively stores pointers to objects.
// So whether or not it's a pointer-container is defined by the
// element type in C# and by the container in C++.
string elementType = debugger.GetExpression(name + ".head.item").Type;
Expression isValueTypeExpr = debugger.GetExpression("typeof(" + elementType + ").IsValueType");
if (!isValueTypeExpr.IsValidValue || isValueTypeExpr.Value != "true")
{
return(false);
}
//string headPointerPointerName = "(void*)&(" + name + ".head)"; //(void*)IntPtr*
string headPointerName = "(void*)*(&(" + name + ".head))"; // (void*)IntPtr
string nextPointerPointerName = "(void*)&(" + name + ".head.next)"; //(void*)IntPtr*
string nextPointerName = "(void*)*(&(" + name + ".head.next))"; // (void*)IntPtr
string valPointerName = "(void*)&(" + name + ".head.item)"; // (void*)IntPtr* or (void*)ValueType*
TypeInfo nextPointerInfo = new TypeInfo(debugger, nextPointerPointerName);
TypeInfo nextInfo = new TypeInfo(debugger, nextPointerName);
if (!nextPointerInfo.IsValid || !nextInfo.IsValid)
{
return(false);
}
MemoryReader.ValueConverter <ulong> pointerConverter = mreader.GetPointerConverter(nextPointerInfo.Type, nextPointerInfo.Size);
if (pointerConverter == null)
{
return(false);
}
long nextDiff = ExpressionParser.GetPointerDifference(debugger, headPointerName, nextPointerPointerName);
long valDiff = ExpressionParser.GetPointerDifference(debugger, headPointerName, valPointerName);
if (ExpressionParser.IsInvalidAddressDifference(nextDiff) ||
ExpressionParser.IsInvalidAddressDifference(valDiff) ||
nextDiff < 0 || valDiff < 0)
{
return(false);
}
ulong address = ExpressionParser.GetPointer(debugger, headPointerName);
if (address == 0)
{
return(false);
}
for (int i = 0; i < size; ++i)
{
double[] values = new double[elementConverter.ValueCount()];
if (!mreader.Read(address + (ulong)valDiff, values, elementConverter))
{
return(false);
}
if (!memoryBlockPredicate(values))
{
return(false);
}
ulong[] nextTmp = new ulong[1];
if (!mreader.Read(address + (ulong)nextDiff, nextTmp, pointerConverter))
{
return(false);
}
address = nextTmp[0];
}
return(true);
}
