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Re: [Qemu-devel] [PATCH for-2.8 v1 05/60] trace: add trace event iterato
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] [PATCH for-2.8 v1 05/60] trace: add trace event iterator APIs |
Date: |
Wed, 14 Sep 2016 13:32:02 +0100 |
User-agent: |
Mutt/1.7.0 (2016-08-17) |
On Fri, Sep 02, 2016 at 04:52:18PM -0400, Stefan Hajnoczi wrote:
> On Tue, Aug 09, 2016 at 04:31:33PM +0100, Daniel P. Berrange wrote:
> > +TraceEvent *trace_event_iter_next(TraceEventIter *iter)
> > +{
> > + TraceEvent *ev;
> > +
> > + if (iter->event >= TRACE_EVENT_COUNT) {
> > + return NULL;
> > + }
> > +
> > + ev = &(trace_events[iter->event]);
> > +
> > + do {
> > + iter->event++;
> > + } while (iter->event < TRACE_EVENT_COUNT &&
> > + iter->pattern &&
> > + !pattern_glob(iter->pattern,
> > +
> > trace_event_get_name(&(trace_events[iter->event]))));
> > +
> > + return ev;
> > +}
>
> Shouldn't ev be updated inside the while loop? Otherwise the iterator
> always returns &trace_events[0] the first time it's called.
Sigh, yes, well spotted.
Regards,
Daniel
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