// Retrieves a list of the stack frames for this thread.
// For the sample engine, enumerating the stack frames requires walking the callstack in the debuggee for this thread
// and coverting that to an implementation of IEnumDebugFrameInfo2.
// Real engines will most likely want to cache this information to avoid recomputing it each time it is asked for,
// and or construct it on demand instead of walking the entire stack.
int IDebugThread2.EnumFrameInfo(enum_FRAMEINFO_FLAGS aFieldSpec, uint aRadix, out IEnumDebugFrameInfo2 oEnumObject)
{
// Check mStackFrame, not address because it is possible for 2 sequential breaks to be on the same address
// but in that case we would need a new stack frame.
//
// EnumFrameInfo is called several times on each break becuase "different callers can call with different flags".
// We ignore flags through and always return full, but EnumFrameInfo gets called half a dozen times which is slow
// if we refresh each and every time. So we cache our info.
if (mProcess.mStackFrame == null || true)
{
// Ask the lower-level to perform a stack walk on this thread
//m_engine.DebuggedProcess.DoStackWalk(this.m_debuggedThread);
oEnumObject = null;
try {
//System.Collections.Generic.List<X86ThreadContext> stackFrames = this.m_debuggedThread.StackFrames;
//int numStackFrames = stackFrames.Count;
FRAMEINFO[] xFrameInfoArray;
//if (numStackFrames == 0) {
// failed to walk any frames. Only return the top frame.
xFrameInfoArray = new FRAMEINFO[1];
var xFrame = new AD7StackFrame(mEngine, this, mProcess);
xFrame.SetFrameInfo((enum_FRAMEINFO_FLAGS)aFieldSpec, out xFrameInfoArray[0]);
//} else {
//frameInfoArray = new FRAMEINFO[numStackFrames];
//for (int i = 0; i < numStackFrames; i++) {
//AD7StackFrame frame = new AD7StackFrame(m_engine, this, stackFrames[i]);
//frame.SetFrameInfo(dwFieldSpec, out frameInfoArray[i]);
//}
//}
mProcess.mStackFrame = new AD7FrameInfoEnum(xFrameInfoArray);
} catch (Exception e) {
//catch (ComponentException e) {
// return e.HResult;
//}
return(EngineUtils.UnexpectedException(e));
}
}
oEnumObject = mProcess.mStackFrame;
return(VSConstants.S_OK);
}
public AD7Property(DebugLocalInfo localInfo, AD7Process process, AD7StackFrame stackFrame)
{
m_variableInformation = localInfo;
mProcess = process;
mStackFrame = stackFrame;
if (localInfo.IsLocal)
{
mDebugInfo = mStackFrame.mLocalInfos[m_variableInformation.Index];
}
else if (localInfo.IsReference)
{
mDebugInfo = new LOCAL_ARGUMENT_INFO()
{
TYPENAME = localInfo.Type,
NAME = localInfo.Name,
OFFSET = localInfo.Offset
};
}
else
{
mDebugInfo = mStackFrame.mArgumentInfos[m_variableInformation.Index];
}
}
public AD7Expression(DebugLocalInfo pVar, AD7Process pProcess, AD7StackFrame pStackFrame)
{
m_var = pVar;
Process = pProcess;
StackFrame = pStackFrame;
}
