private bool EnumSymbolsCallback(ref NativeMethods.SYMBOL_INFO symInfo, uint symbolSize, IntPtr contextZero)
{
var si = new SymbolInfo()
{
Address = symInfo.Address,
FileName = "",
LineNumber = 0,
Name = symInfo.Name
};
// get the line
NativeMethods.IMAGEHLP_LINE64 line = new NativeMethods.IMAGEHLP_LINE64();
line.SizeOfStruct = (uint)Marshal.SizeOf(line);
ulong addr = si.Address;
uint disp32;
if (NativeMethods.SymGetLineFromAddr64(_libHandle, addr, out disp32, ref line))
{
StringBuilder fn = new StringBuilder(128);
for (int i = 0; ; ++i)
{
byte b = Marshal.ReadByte(IntPtr.Add(line.FileName, i));
if (0 == b)
break;
fn.Append((char)b);
}
si.FileName = fn.ToString();
si.LineNumber = (int)line.LineNumber;
_symbolCache.Add(si);
}
else
{
si.FileName = "(no source)";
}
return true;
}
/// <summary>
/// Update the provided symbol with source/line information.
/// </summary>
/// <param name="symbol">The symbol to update.</param>
private void UpdateLineInformation(SymbolInfo symbol)
{
// get the line
NativeMethods.IMAGEHLP_LINE64 line = new NativeMethods.IMAGEHLP_LINE64();
line.SizeOfStruct = (uint)Marshal.SizeOf(line);
uint disp32;
if (NativeMethods.SymGetLineFromAddr64(_libHandle, symbol.Address, out disp32, ref line))
{
symbol.FileName = Marshal.PtrToStringAnsi(line.FileName);
symbol.LineNumber = (int)line.LineNumber;
}
}
