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From: "Wiles, Roger Keith" <keith.wiles@windriver.com>
To: "RICHARDSON, BRUCE" <bruce.richardson@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Why rte_snprintf at all?
Date: Mon, 23 Jun 2014 22:46:14 +0000
Message-ID: <E84A4CA4-9026-43E8-81B0-D17EAD1E64E4@windriver.com> (raw)
In-Reply-To: <59AF69C657FD0841A61C55336867B5B02CEE1C3A@IRSMSX103.ger.corp.intel.com>


Will the deprecated attribute stop the build as warns are converted to errors? Having warns as errors is a good idea IMO, as some warns will cause a problem in execution sometimes or portability.

One suggestion is we can ifdef out the code, but also place the deprecated attribute on the function. Then the #else side of the ifdef is the #define to use snprintf. This way if they enable the ifdef they must live with the problem of deprecation later. Does 1.7 not support the deprecated attribute, maybe that was your point. :-)

I see a lot of code using rte_snprintf and I hate to change all of the code, but it is a simple find/replace sed script.
It is up to you guys I was just suggesting a simple fix for this release instead of the next release.


Keith Wiles, Principal Technologist with CTO office, Wind River
mobile 972-213-5533

[Powering 30 Years of Innovation]<http://www.windriver.com/announces/wr30/>

On Jun 23, 2014, at 5:34 PM, Richardson, Bruce <bruce.richardson@intel.com<mailto:bruce.richardson@intel.com>> wrote:

That could work, Keith.
However, I would suggest we make use of the gcc “deprecated” function attribute in 1.8 to flag it for future removal in a subsequent release. [Ref: https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html]. That’s what the attribute is there for.

From: Wiles, Roger Keith [mailto:keith.wiles@windriver.com]
Sent: Monday, June 23, 2014 3:31 PM
To: Rogers, Gerald
Cc: Richardson, Bruce; Stephen Hemminger; dev@dpdk.org<mailto:dev@dpdk.org>
Subject: Re: [dpdk-dev] Why rte_snprintf at all?

Why not just convert it into a macro and ifdef out the code or remove it. This way it can we remove later or just kept for some backward compat reason.

#define rte_snprintf  snprintf

Keith Wiles, Principal Technologist with CTO office, Wind River
mobile 972-213-5533

[Powering 30 Years of Innovation]<http://www.windriver.com/announces/wr30/>

On Jun 23, 2014, at 5:25 PM, Rogers, Gerald <gerald.rogers@intel.com<mailto:gerald.rogers@intel.com>> wrote:

Bruce, Stephen,

It may be a duplicate, but people are likely using it.  I would assume
deprecate means don¹t remove, but put in a comment that says please don¹t
use and migrate your code away from it.



On 6/23/14, 3:18 PM, "Richardson, Bruce" <bruce.richardson@intel.com<mailto:bruce.richardson@intel.com>>

-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Stephen Hemminger
Sent: Monday, June 23, 2014 10:16 AM
To: dev@dpdk.org<mailto:dev@dpdk.org>
Subject: [dpdk-dev] Why rte_snprintf at all?

Why does rte_snprintf exist? It seems like a misunderstanding or broken
implementation of snprintf in some other C library. For standard Glibc,
I get same result from rte_snprintf and snprintf for all inputs
boundary cases

It can indeed probably be deprecated in next release. Any objections?


  reply	other threads:[~2014-06-23 22:45 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-23 17:16 Stephen Hemminger
2014-06-23 22:18 ` Richardson, Bruce
2014-06-23 22:25   ` Rogers, Gerald
2014-06-23 22:31     ` Wiles, Roger Keith
2014-06-23 22:34       ` Richardson, Bruce
2014-06-23 22:46         ` Wiles, Roger Keith [this message]
2014-06-23 22:53           ` Richardson, Bruce
2014-06-24  9:22             ` Thomas Monjalon

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