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progress meter: add disabled code for a more stable ETA

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Compiles to ~25 bytes if enabled.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-02-13 16:48:52 +01:00
parent aa617ac097
commit edccc982e5
2 changed files with 14 additions and 0 deletions
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1
include/libbb.h
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@ -1949,6 +1949,7 @@ typedef struct bb_progress_t {
unsigned last_update_sec;
unsigned last_change_sec;
unsigned start_sec;
/*unsigned last_eta;*/
const char *curfile;
} bb_progress_t;

13
libbb/progress.c
View File

@ -57,6 +57,9 @@ void FAST_FUNC bb_progress_init(bb_progress_t *p, const char *curfile)
p->last_update_sec = p->start_sec;
p->last_change_sec = p->start_sec;
p->last_size = 0;
#if 0
p->last_eta = INT_MAX;
#endif
}
/* File already had beg_size bytes.
@ -192,6 +195,16 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p,
/* if 32bit, can overflow ^^^^^^^^^^, but this would only show bad ETA */
if (eta >= 1000*60*60)
eta = 1000*60*60 - 1;
#if 0
/* To prevent annoying "back-and-forth" estimation jitter,
* if new ETA is larger than the last just by a few seconds,
* disregard it, and show last one. The end result is that
* ETA usually only decreases, unless download slows down a lot.
*/
if ((unsigned)(eta - p->last_eta) < 10)
eta = p->last_eta;
p->last_eta = eta;
#endif
secs = eta % 3600;
hours = eta / 3600;
fprintf(stderr, "%3u:%02u:%02u ETA", hours, secs / 60, secs % 60);