From: "Pavey, Nicholas" <npavey@akamai.com>
To: "Wiles, Keith" <keith.wiles@intel.com>,
David Aldrich <David.Aldrich@EMEA.NEC.COM>
Cc: "users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] Is DPDK compatible with C++11 threads?
Date: Tue, 8 Nov 2016 17:23:25 +0000 [thread overview]
Message-ID: <84125BAD-BA31-4E28-8FF6-F7D4D5BD1EE3@akamai.com> (raw)
In-Reply-To: <B1082639-11F2-413E-B414-1F0C1A6E7867@intel.com>
I’ve built the DPDK along with code in both C and C++. It works fine as long as you get the linkage between the languages correct and make sure that you don’t pass C++ headers into files compiled with the C compiler.
I did try building the DPDK itself with the “g++” compiler (v4.8.4, Ubuntu 14.04, 64bit), and I wasn’t able to get that working out of the box. I got hundreds of warnings, but I didn’t take the time to debug it – it’s possible that a few point fixes in the build system / DPDK code might yield a clean compile.
Thanks,
Nick
From: "Wiles, Keith" <keith.wiles@intel.com>
Date: Tuesday, November 8, 2016 at 12:04 PM
To: David Aldrich <David.Aldrich@EMEA.NEC.COM>
Cc: "users@dpdk.org" <users@dpdk.org>
Subject: Re: [dpdk-users] Is DPDK compatible with C++11 threads?
On Nov 8, 2016, at 5:12 AM, David Aldrich <David.Aldrich@EMEA.NEC.COM<mailto:David.Aldrich@EMEA.NEC.COM>> wrote:
Hi
As a beginner with DPDK, I want to consider how we can convert an existing Linux application from using the kernel network stack to using DPDK.
This existing app is multi-threaded, using the C++11 thread, mutex etc. classes. We assign threads to cores by calling pthread_setaffinity_np().
I have looked at the DPDK helloworld application and see that it launches threads using the DPDK API:
/* call lcore_hello() on every slave lcore */
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
rte_eal_remote_launch(lcore_hello, NULL, lcore_id);
}
If we use DPDK, can we retain our existing C++11 threads or are we obliged to use the DPDK threading APIs exclusively?
You should be able to use the standard C++11 threads I believe, in DPDK we are just using pthreads and set affinity to lock a thread to a core. You can still use pthreads in your application.
Perhaps a more basic question is applicable: is DPDK compatible with C++?
I believe building DPDK with C++ code does work, but I have not tried it myself.
Best regards
David
Best regards
David
Regards,
Keith
next prev parent reply other threads:[~2016-11-08 17:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-08 13:12 David Aldrich
2016-11-08 17:04 ` Wiles, Keith
2016-11-08 17:23 ` Pavey, Nicholas [this message]
2016-11-09 8:40 ` David Aldrich
2016-11-09 21:00 ` Wiles, Keith
2016-11-10 4:14 ` Anupam Kapoor
2016-11-10 12:49 ` Pavey, Nicholas
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