[PATCH 13/19] nptl: Use __pthread_attr_setaffinity_np in pthread_getattr_np

[Carlos O'Donell]

On 5/19/20 6:44 AM, Florian Weimer via Libc-alpha wrote:
> This avoids duplicating the code for the affinity mask allocation
> handling.

OK for master.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>  nptl/pthread_getattr_np.c | 30 ++++++++++++++----------------
>  1 file changed, 14 insertions(+), 16 deletions(-)
> 
> diff --git a/nptl/pthread_getattr_np.c b/nptl/pthread_getattr_np.c
> index 0e8911346d..ce437205e4 100644
> --- a/nptl/pthread_getattr_np.c
> +++ b/nptl/pthread_getattr_np.c
> @@ -33,8 +33,13 @@ int
>  __pthread_getattr_np (pthread_t thread_id, pthread_attr_t *attr)
>  {
>    struct pthread *thread = (struct pthread *) thread_id;
> +
> +  /* Prepare the new thread attribute.  */
> +  int ret = __pthread_attr_init (attr);
> +  if (ret != 0)
> +    return ret;
> +

OK.

>    struct pthread_attr *iattr = (struct pthread_attr *) attr;
> -  int ret = 0;
>  
>    lll_lock (thread->lock, LLL_PRIVATE);
>  
> @@ -187,25 +192,18 @@ __pthread_getattr_np (pthread_t thread_id, pthread_attr_t *attr)
>        while (ret == EINVAL && size < 1024 * 1024);
>  
>        if (ret == 0)
> -	{
> -	  iattr->cpuset = cpuset;
> -	  iattr->cpusetsize = size;
> -	}
> -      else
> -	{
> -	  free (cpuset);
> -	  if (ret == ENOSYS)
> -	    {
> -	      /* There is no such functionality.  */
> -	      ret = 0;
> -	      iattr->cpuset = NULL;
> -	      iattr->cpusetsize = 0;
> -	    }
> -	}
> +	ret = __pthread_attr_setaffinity_np (attr, size, cpuset);

OK. Handled all in pthread_attr_setaffinity_np.

> +      else if (ret == ENOSYS)
> +	/* There is no such functionality.  */
> +	ret = 0;
> +      free (cpuset);

OK.

>      }
>  
>    lll_unlock (thread->lock, LLL_PRIVATE);
>  
> +  if (ret != 0)
> +    __pthread_attr_destroy (attr);

OK. Destory the attribute if things failed.

> +
>    return ret;
>  }
>  versioned_symbol (libc, __pthread_getattr_np, pthread_getattr_np, GLIBC_2_32);
> 


-- 
Cheers,
Carlos.