[dpdk-dev] [PATCH] log: support custom log function

[Stephen Hemminger]

On Fri, 5 Feb 2021 20:22:36 +0800
Feng Li <lifeng1519 at gmail.com> wrote:

> David Marchand <david.marchand at redhat.com> 于2021年2月5日周五 下午7:56写道：
> >
> > On Fri, Feb 5, 2021 at 12:25 PM Li Feng <fengli at smartx.com> wrote:  
> > >
> > > Currently, the dpdk log is out to stdout/stderr and syslog.
> > > We should support to output the log to another please, e.g. file or
> > > glog.  
> >
> > Why not use rte_openlog_stream() / rte_log_get_stream() ?
> >
> >
> > --
> > David Marchand
> >  
> rte_openlog_stream seems it could set an external FILE* stream.
> However, in the glog or C++ io stream, it's stream like std::cout.
> I think it's hard to use a FILE* stream to unify them.
> 
> Use a custom logger function may be a better choice.

A FILE * stream can be created that uses any other function under
the covers. See fopencookie(3)