// The function verifies that the stackwalker for this thread is "current". The stack-walker will become
// invalid when a debugger performs an operation that invalidats active stackwalkers. Examples of such
// operations are:
// - calling Continue(), calling SetIP() or calling RefreshStack() methods.
//
// If the current stack-walker is not current, a new stack-walker is created for the thread. The function
// also sets the current frame if the stack walker is refreshed.
//
private void EnsureCurrentStackWalker()
{
if (m_stackWalker != null && m_stackWalker.IsUsable)
{
return;
}
m_stackWalker = m_threadMgr.FrameFactory.CreateStackWalker(this);
// initialize the frame index to be the invalid index
m_currentFrameIndex = -1;
// set m_currentFrame to first non-virtual frame
MDbgFrame f = m_stackWalker.GetFrame(0);
if (f == null)
{
return;
}
// we have at least one frame, so set the frame index to 0
m_currentFrameIndex = 0;
while (f != null &&
f.IsInfoOnly)
{
f = f.NextUp;
if (f != null)
{
++m_currentFrameIndex;
}
}
}
// The function verifies that the stackwalker for this thread is "current". The stack-walker will become
// invalid when a debugger performs an operation that invalidats active stackwalkers. Examples of such
// operations are:
// - calling Continue(), calling SetIP() or calling RefreshStack() methods.
//
// If the current stack-walker is not current, a new stack-walker is created for the thread. The function
// also sets the current frame if the stack walker is refreshed.
//
private void EnsureCurrentStackWalker()
{
if (m_stackWalker != null && m_stackWalker.IsUsable)
{
return;
}
m_stackWalker = m_threadMgr.FrameFactory.CreateStackWalker(this);
// initialize the frame index to be the invalid index
m_currentFrameIndex = -1;
// set m_currentFrame to first non-virtual frame
MDbgFrame f = m_stackWalker.GetFrame(0);
if (f == null)
{
return;
}
// we have at least one frame, so set the frame index to 0
m_currentFrameIndex = 0;
while (f != null
&& f.IsInfoOnly)
{
f = f.NextUp;
if (f != null)
{
++m_currentFrameIndex;
}
}
}