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From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: John Ousterhout <ouster@cs.stanford.edu>
Cc: dev@dpdk.org
Subject: Re: [PATCH v4] log: respect rte_openlog_stream calls before rte_eal_init
Date: Wed, 12 Oct 2016 21:47:32 +0200	[thread overview]
Message-ID: <2906824.LEp5vtMuTD@xps13> (raw)
In-Reply-To: <20161012193832.5016-1-ouster@cs.stanford.edu>

2016-10-12 12:38, John Ousterhout:
> @@ -127,6 +125,19 @@ rte_vlog(uint32_t level, uint32_t logtype, const char *format, va_list ap)
>  {
>  	int ret;
>  	FILE *f = rte_logs.file;
> +	if (f == NULL) {
> +		f = default_log_stream;
> +		if (f == NULL) {
> +			/*
> +			 * Grab the current value of stderr here, rather than
> +			 * just initializing default_log_stream to stderr. This
> +			 * ensures that we will always use the current value
> +			 * of stderr, even if the application closes and
> +			 * reopens it.
> +			 */
> +			f = stderr;
> +		}
> +	}

I don't understand this big comment.
What is the difference with initializing default_log_stream to stderr?
What do you mean by "if the application closes and reopens it"?

  reply	other threads:[~2016-10-12 19:47 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-28 20:42 [PATCH] log: respect rte_openlog_stream calls before rte_eal_init John Ousterhout
2016-09-30 15:01 ` Thomas Monjalon
2016-10-10 22:39 ` [PATCH v2] " John Ousterhout
2016-10-11  8:08   ` Thomas Monjalon
2016-10-11 16:30     ` John Ousterhout
2016-10-11 20:30       ` Thomas Monjalon
2016-10-11 21:46         ` John Ousterhout
2016-10-12  7:09           ` Thomas Monjalon
2016-10-11 22:16       ` Don Provan
2016-10-12  0:22         ` John Ousterhout
2016-10-12 19:29 ` [PATCH v3] " John Ousterhout
2016-10-12 19:38 ` [PATCH v4] " John Ousterhout
2016-10-12 19:47   ` Thomas Monjalon [this message]
2016-10-12 21:17     ` John Ousterhout
2016-10-13 20:03   ` Thomas Monjalon

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