public static void UnwrapGCHandleCmd(string arguments)
{
ArgParser ap = new ArgParser(arguments);
if (ap.Count != 1)
{
WriteError("Wrong arguments, should be name or address of a \"System.Runtime.InteropServices.GCHandle\" object.");
return;
}
long handleAdd = 0;
// First try to resolve the argument as a variable in the current frame
MDbgValue var = Debugger.Processes.Active.ResolveVariable(
ap.AsString(0),
Debugger.Processes.Active.Threads.Active.CurrentFrame);
if (var != null)
{
if (var.TypeName != "System.Runtime.InteropServices.GCHandle")
{
WriteError("Variable is not of type \"System.Runtime.InteropServices.GCHandle\".");
return;
}
foreach (MDbgValue field in var.GetFields())
{
if (field.Name == "m_handle")
{
handleAdd = Int64.Parse(field.GetStringValue(0));
break;
}
}
}
else
{
// Trying to resolve as a raw address now
try
{
handleAdd = ap.GetArgument(0).AsAddress;
}
catch (System.FormatException)
{
WriteError("Couldn't recognize the argument as a variable name or address");
return;
}
}
IntPtr add = new IntPtr(handleAdd);
CorReferenceValue result;
try
{
result = Debugger.Processes.Active.CorProcess.GetReferenceValueFromGCHandle(add);
}
catch (System.Runtime.InteropServices.COMException e)
{
if (e.ErrorCode == (int)HResult.CORDBG_E_BAD_REFERENCE_VALUE)
{
WriteError("Invalid handle address.");
return;
}
else
{
throw;
}
}
CorValue v = result.Dereference();
MDbgValue mv = new MDbgValue(Debugger.Processes.Active, v);
if (mv.IsComplexType)
{
WriteOutput(string.Format("GCHandle to <{0}>",
InternalUtil.PrintCorType(Debugger.Processes.Active, v.ExactType)));
// now print fields as well
foreach (MDbgValue f in mv.GetFields())
CommandBase.WriteOutput(" " + f.Name + "=" + f.GetStringValue(0));
}
else
{
WriteOutput(string.Format("GCHandle to {0}", mv.GetStringValue(0)));
}
}
