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Re: How to watch for changes in a location of memory


Eli Zaretskii <eliz@gnu.org> writes:

>> From: Andreas Schwab <schwab@suse.de>
>> Cc: gdb Mailing List <gdb@sources.redhat.com>
>> Date: Fri, 08 Aug 2008 13:55:47 +0200
>> 
>> Stefano Sabatini <stefano.sabatini-lala@poste.it> writes:
>> 
>> > Thank you for the good pointer, yes indeed it seems it does what I
>> > want, which is basically:
>> > watch &ctx->foo;
>> 
>> This is equivalent to `watch ctx', since the address of ctx->foo can
>> only change if ctx changes.  Watching an address of something is
>> generally not usefull.
>
> And "watch ctx" is also not generally useful, because most platforms
> cannot watch large structures.

In this example, ctx is a pointer (otherwise ctx->foo wouldn't work),
which is small enough on all platforms.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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