[cdt-debug-dev] Events and CDI

[Matthew Ballance <matt.ballance@xxxxxxxxx>]

Hi all,

    I'm working on a debugger that uses the win32 and
MS-provided symbol-access APIs to support debugging of Visual
Studio-compiled applications. I've run into a problem with supporting
variables and thought that a CDI developer or a developer of the CDI
gdb-mi debugger could give me some pointers...

    My first attempt at showing variables was to get
method-local variables and parameters working. ICDIStackFrame has a
method getLocalVariableDescriptors() that returns an array of variables
descriptors. I've implemented this method to return variable
descriptors for the local parameters of the current stack frame. What I
observe in Eclipse is that sometimes the <var-name> =
<value> item is displayed in the Variables view, sometimes
"Pending ..." is displayed, and sometimes "..." is shown. 

    I learned when implemented breakpoints that a
CreatedEvent had to be posted for each new breakpoint in addition to
returning the breakpoint object from the set<Type>Breakpoint. I
thought that perhaps I needed to do something similar for variables. I
started by posting CreatedEvent's when createLocalVariable() was
called, but saw no change in behavior. I also tried posting
CreateEvent's from getLocalVariableDescriptors(). Again, no change in
behavior.

    Any thoughts on what I may be doing wrong?

    Thanks in advance!

Thanks and Regards,
Matthew