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RE: [cdt-dev] Breakpoint marker question
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This code is written in 2002. Many things have changed since :)
-----Original Message-----
From: cdt-dev-bounces@xxxxxxxxxxx [mailto:cdt-dev-bounces@xxxxxxxxxxx]
On Behalf Of Marc Khouzam
Sent: Friday, November 13, 2009 1:59 PM
To: 'CDT General developers list.'
Subject: RE: [cdt-dev] Breakpoint marker question
Thanks for the answer Mikhail.
> Breakpoint markers are used to persist the breakpoint attributes
> between Eclipse sessions.
>
> Storing the current address for a function or a line breakpoint is
> wrong because it can be different if the executable is changed. The
> 'address' property is never used for line breakpoints (the line and
> function breakpoint's addresses are retrieved from the backend).
> So the answer is No, they shouldn't. In fact, both 'function' and
> 'address' shouldn't have been added to cLineBreakpointMarker.
> But their
> presence doesn't affect the implementation.
If we take 'address' as an example. I create an address-bp and then I
exit Eclipse. When I start a new Eclipse, the address-bp is in the
workspace with the right address; I haven't launched anything yet, so
this address can't be taken from the backend. I guess the marker was
used to store the address, even though it seems that marker does not
have an 'address' attribute.
It seems that any attribute can be added programatically to a marker,
even if that attribute was not declared in XML. I haven't figured out
if declaring the attribute in XML is actually important.
But I guess it doesn't matter now, since things work properly.
(I've declared the tracepoint marker with the passCount attribute, just
in case).
Thanks
>
> Cheers,
> Mikhail
> -----Original Message-----
> From: cdt-dev-bounces@xxxxxxxxxxx [mailto:cdt-dev-bounces@xxxxxxxxxxx]
> On Behalf Of Marc Khouzam
> Sent: Thursday, November 12, 2009 8:39 PM
> To: 'CDT General developers list.'
> Subject: [cdt-dev] Breakpoint marker question
>
> Hi,
>
> I'm looking at the breakpoint markers in plugin.xml of
> org.eclipse.cdt.debug.core.
>
> The hierarchy is like this with attributes in parens:
>
> lineBreakpointMarker breakpointMarker
> \ |
> \ cBreakpointMarker (condition,
> ignoreCount, threadId, installCount, sourceHandle, bpType)
> \ |
> commonCLineBreakpointMarker
> / | \
> cFunctionBreakpointMarker | cLineBreakpointMarker
> (function, address)
> |
> cAddressBreakpointMarker
>
> What is strange is that the two attribute 'function' and 'address' are
> with cLineBreakpointMarker.
> Shouldn't they be with commonCLineBreakpointMarker intead, so that
> cAddressBreakpointMarker and cFunctionBreakpointMarker would inherit
> them?
>
> Thanks
>
> P.S. I haven't figured out if these attributes are important or not...
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