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Date: Mon, 12 Jan 2015 09:52:10 -0500
From: Neil Horman <nhorman@tuxdriver.com>
To: "Ni, Xun" <xun.ni@intel.com>
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] daemon process problem in DPDK
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On Mon, Jan 12, 2015 at 02:28:20PM +0000, Ni, Xun wrote:
> Hello:
> 
>    I have basic questions related to dpdk and trying to find help.
> 
>    I am about to create a daemon process, is there a way for other process to know whether the daemon is already created? I doesn't mean to get the pid, because it changes every time.
> 
>    If the daemon is created, how do other process to communicate with this daemon? Dpdk seems to have rte ring but it only exists on the Ethernet, while I am talking about the process within the same computer, and the way like share-memory, but I didn't find examples about the share memory between processes.
> 
> Thanks,
> Xun
> 
> 

Thats not really a dpdk question, that a generic programming question.  You can
do this lots of ways.  Open a socket that other process can connect to on an
agreed port, create a shared memory segment, write a file with connect
information to a well know location, etc.
Neil