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improve accuracy of progress for smaller payloads; prevent divide by zero for very small payloads

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This commit is contained in:
Jamiras 2020-01-22 17:42:55 -07:00
parent bf5d3437f0
commit a96672c0fc
1 changed files with 8 additions and 1 deletions
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9
tasks/task_http.c
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@ -126,7 +126,14 @@ static int task_http_iterate_transfer(retro_task_t *task)
if (!net_http_update(http->handle, &pos, &tot)) if (!net_http_update(http->handle, &pos, &tot))
{ {
task_set_progress(task, (tot == 0) ? -1 : (signed)pos / (tot / 100)); if (tot == 0)
task_set_progress(task, -1);
else if (pos < (((size_t)-1) / 100))
/* prefer multiply then divide for more accurate results */
task_set_progress(task, (signed)(pos * 100 / tot));
else
/* but invert the logic if it would cause an overflow */
task_set_progress(task, MAX((signed)pos / (tot / 100), 100));
return -1; return -1;
} }