[cfe-dev] how to do C++ Instrumentation with Clang?

[yonggang_chen via cfe-dev]

Hello all,

I have a large project which consists of several millions of C++ code. Now I want to add a log function to each line of code. If do it manually, it's almost impossible.

Suppose my original code is like this:
void snapshot_handler::mouseMoveEvent(IDocView* pDocView, QMouseEvent * event)
{
    pDocView->getViewPortWidget()->setCursor(Qt::CrossCursor);
    m_ptEnd = event->pos();
    pDocView->updateView();
}

I want to log each line of code and the function:
void snapshot_handler::mouseMoveEvent(IDocView* pDocView, QMouseEvent * event)
{
    Log << "mouseMoveEvent;
    Log << pDocView->getViewPortWidget()->setCursor(Qt::CrossCursor);
    Log << m_ptEnd = event->pos();
    Log << pDocView->updateView();
    Log << "elapsed time in seconds";
}

Can Clang support doing this? If so, how can achieve such requirements?

Best regards
Yonggang Chen
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