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Re: [PATCH 07/30] perf tools: Add reference counting for thread_map object

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Em Sun, Jun 14, 2015 at 10:19:22AM +0200, Jiri Olsa escreveu:
> Adding refference counting for thread_map object, so
> it could be easily shared among other objects.
> 
> Using thread_map__put instead thread_map__delete and making
> thread_map__delete static.
 
<SNIP>

> +struct thread_map *thread_map__get(struct thread_map *map)
> +{
> +	atomic_inc(&map->refcnt);
> +	return map;
> +}
> +
> +void thread_map__put(struct thread_map *map)
> +{
> +	if (map && atomic_dec_and_test(&map->refcnt))
> +		thread_map__delete(map);
>  }

See comment on the other struct being refcounted, get/put should
both accept NULL maps, to avoid having to check it in the users,
just like with free().

- Arnaldo
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Re: [PATCH 07/30] perf tools: Add reference counting for thread_map  object Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-06-15 22:10 +0200

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