----------------------------------------------------------------------
Message: 1
Date: Fri, 22 Feb 2013 20:13:15 +0000
From: "Thibault, Daniel" <[email protected]>
Subject: [lttng-dev] babeltrace omits its closing verbose comment
> The verbose output of babeltrace (-v, --verbose) is missing its closing
> comment. Looking at babeltrace.c, line 670:
>
> fmt_write->close_trace(td_write);
>
> bt_context_put(ctx);
> printf_verbose("finished converting. Output written to:\n%s\n",
> opt_output_path ? : "<stdout>");
> goto end;
>
> I suspect that the printf_verbose should be moved to *before* the
> fmt_write->close_trace. That way the last comment would be sent to stdout
> (or the user-selected --output, once bug 459
> (http://bugs.lttng.org/issues/459) is fixed), right?
Revisiting this, I see I was wrong in wanting the closing comment pushed to
stdout: it correctly belongs on stderr, like the '[verbose]' prologue to the
babeltrace conversion. My mistake was caused by using 'babeltrace sometrace -v
&> outputtrace' in order to circumvent the (now fixed) -w bug (I should have
used just '>'). This made me miss the distinction between what verbose pushes
to stderr vs. what it pushes to stdout (or -w). Quite correctly, --verbose
changes only one thing in the output: it adds the stream.event.header to the
event records.
Daniel U. Thibault
R & D pour la défense Canada - Valcartier (RDDC Valcartier) / Defence R&D
Canada - Valcartier (DRDC Valcartier)
Cyber sécurité pour les missions essentielles (CME) / Mission Critical Cyber
Security (MCCS)
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Countermeasures (SPC)
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<http://www.valcartier.drdc-rddc.gc.ca/>
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