On Wed, Jun 17, 2020 at 11:40:03AM +0300, Alexey Budankov wrote:
> 
> Consolidate event dispatching loops for fork, attach and system
> wide monitoring use cases into common dispatch_events() function.
> 
> Signed-off-by: Alexey Budankov <[email protected]>
> ---
>  tools/perf/builtin-stat.c | 35 ++++++++++++++++++++++++-----------
>  1 file changed, 24 insertions(+), 11 deletions(-)
> 
> diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
> index 3bc538576607..39749c290508 100644
> --- a/tools/perf/builtin-stat.c
> +++ b/tools/perf/builtin-stat.c
> @@ -557,6 +557,27 @@ static bool is_target_alive(struct target *_target,
>       return false;
>  }
>  
> +static int dispatch_events(bool forks, int timeout, int interval, int 
> *times, struct timespec *ts)
> +{
> +     bool stop = false;
> +     int child = 0, status = 0;
> +
> +     while (1) {
> +             if (forks)
> +                     child = waitpid(child_pid, &status, WNOHANG);
> +             else
> +                     child = !is_target_alive(&target, 
> evsel_list->core.threads) ? 1 : 0;

please renme child to something more accurate, so the condition
below makes more sense, like child_stoped or such

jirka

> +
> +             if (done || stop || child)
> +                     break;
> +
> +             nanosleep(ts, NULL);
> +             stop = process_timeout(timeout, interval, times);
> +     }
> +
> +     return status;
> +}
> +

SNIP

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