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From: Cyril Cressent <cyril.cressent@intel.com>
To: Jose Gavine Cueto <pepedocs@gmail.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] preallocation of void ** obj_p of rte_ring_dequeue
Date: Tue, 5 Nov 2013 10:33:25 +0000	[thread overview]
Message-ID: <20131105103325.GA25808@debian> (raw)
In-Reply-To: <CAJ5bv6EVB-oQuVqghaPq+6UQjkiLbhy6x3ascsYZhT_14bBYRg@mail.gmail.com>

On Tue, Nov 05, 2013 at 06:15:01PM +0800, Jose Gavine Cueto wrote:
> 
> When using *static int rte_ring_dequeue( structe rte_ring * r, void **
> obj_p )*, is the user presumed to allocate obj_p , or does this method
> allocates this obj_p ?

This method doesn't allocate anything ; you have to allocate the object
you want to fill yourself.

You can find more details about how to work with rings there:

- DPDK Programmer's Guide (Chapter 5 - Ring Library)
- DPDK API Documentation for rte_ring.h

Both of which are accessible at http://dpdk.org/doc

Quite a few sample applications (examples/ directory in the DPDK
distribution) also make use of rings, notably the quota_watermark one,
so it's also a good place to look at.

On a side note, it looks like the API reference page for rte_ring.h is
broken? It's missing a lot of functions. I'll look into it if I get a
chance.
http://dpdk.org/doc/api/rte__ring_8h.html#func-members

Cyril

  reply	other threads:[~2013-11-05 10:33 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-05 10:15 Jose Gavine Cueto
2013-11-05 10:33 ` Cyril Cressent [this message]
2013-11-05 10:42   ` Jose Gavine Cueto
2013-11-05 11:18   ` Thomas Monjalon
2013-11-05 16:47     ` Jose Gavine Cueto
2013-11-05 17:54       ` Cyril Cressent
2013-11-05 23:28         ` Jose Gavine Cueto

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