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progress: call trace2_region_leave() only after calling _enter() 

A user of progress API calls start_progress() conditionally and
depends on the display_progress() and stop_progress() functions to
become no-op when start_progress() hasn't been called.

As we added a call to trace2_region_enter() to start_progress(), the
calls to other trace2 API calls from the progress API functions must
make sure that these trace2 calls are skipped when start_progress()
hasn't been called on the progress struct.  Specifically, do not
call trace2_region_leave() from stop_progress() when we haven't
called start_progress(), which would have called the matching
trace2_region_enter().

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2020-05-15 09:09:28 -07:00 committed by Junio C Hamano
parent 98a1364740
commit 3af029c484
1 changed files with 2 additions and 6 deletions
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8
progress.c
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@ -329,13 +329,9 @@ void stop_progress(struct progress **p_progress)
trace2_data_intmax("progress", the_repository,
"total_bytes",
(*p_progress)->throughput->curr_total);
}
trace2_region_leave("progress",
p_progress && *p_progress
? (*p_progress)->title
: NULL,
the_repository);
trace2_region_leave("progress", (*p_progress)->title, the_repository);
}
stop_progress_msg(p_progress, _("done"));
}