[lldb-dev] PATCH for Review: Fix Rendezvous breakpoint to only be set once, resolve addr in BreakpointLocationList::FindByAddress

Michael Sartain mikesart at gmail.com
Tue Jul 16 13:25:21 PDT 2013

On Tue, Jul 16, 2013 at 1:10 PM, Greg Clayton <gclayton at apple.com> wrote:

> On Jul 15, 2013, at 5:24 PM, Michael Sartain <mikesart at gmail.com> wrote:
> > On Mon, Jul 15, 2013 at 4:15 PM, Greg Clayton <gclayton at apple.com>
> wrote:
> > You might think about storing the breakpoint ID instead of a shared
> pointer to the breakpoint.
> >
> >
> > Can I ask why? There should only be one of these I believe.
> It really shouldn't matter really. Just to make sure no strong reference
> to a breakpoint stays around longer than required.
> > I think ThreadPlanStepRange.cpp does something similar with
> m_next_branch_bp_sp. Does that make sense to switch to IDs as well?
> I can see the thread plans doing this because they will be accessing the
> breakpoint as soon as you stop. For the dynamic loaders, we tend to create
> the breakpoint and then the callback will be called automatically, so we
> aren't digging up the breakpoint each time we hit it.
> This doesn't need to be done, this is just out the MacOSX dynamic loader
> does it.

Got it - I just wanted to understand the reasoning. I've switched over,
re-ran the tests, and posted the new patch here. Please let me know if this
looks ok when you get a chance and I'll commit.


Thanks for info Greg.
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