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progress: show overall rate in last update

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The values in struct throughput are only updated every 0.5 seconds.  If
we're all done before that time span then the final update will show a
rate of 0 bytes/s, which is misleading if some bytes had been handled.
Remember the start time and show the total throughput instead.

And avoid division by zero by enforcing a minimum time span value of 1
(unit: 1/1024th of a second).  That makes the resulting rate an
underestimation, but it's closer to the actual value than the currently
shown 0 bytes/s.

Reported-by: 積丹尼 Dan Jacobson <jidanni@jidanni.org>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2017-07-08 18:43:42 +02:00 committed by Junio C Hamano
parent 8c8e978f57
commit 0fae1e072a
1 changed files with 6 additions and 2 deletions
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8
progress.c
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@ -36,6 +36,7 @@ struct progress {
unsigned delay;
unsigned delayed_percent_treshold;
struct throughput *throughput;
uint64_t start_ns;
};
static volatile sig_atomic_t progress_update;
@ -221,6 +222,7 @@ struct progress *start_progress_delay(const char *title, unsigned total,
progress->delayed_percent_treshold = percent_treshold;
progress->delay = delay;
progress->throughput = NULL;
progress->start_ns = getnanotime();
set_progress_signal();
return progress;
}
@ -247,8 +249,10 @@ void stop_progress_msg(struct progress **p_progress, const char *msg)
struct throughput *tp = progress->throughput;
if (tp) {
unsigned int rate = !tp->avg_misecs ? 0 :
tp->avg_bytes / tp->avg_misecs;
uint64_t now_ns = getnanotime();
unsigned int misecs, rate;
misecs = ((now_ns - progress->start_ns) * 4398) >> 32;
rate = tp->curr_total / (misecs ? misecs : 1);
throughput_string(&tp->display, tp->curr_total, rate);
}
progress_update = 1;