void stop_progress_msg(struct progress **p_progress, const char *msg)
{
struct progress *progress = *p_progress;
if (!progress)
return;
*p_progress = NULL;
if (progress->last_value != -1) {
/* Force the last update */
char buf[128], *bufp;
size_t len = strlen(msg) + 5;
struct throughput *tp = progress->throughput;
bufp = (len < sizeof(buf)) ? buf : xmalloc(len + 1);
if (tp) {
struct strbuf strbuf = STRBUF_INIT;
unsigned int rate = !tp->avg_misecs ? 0 :
tp->avg_bytes / tp->avg_misecs;
throughput_string(&strbuf, tp->curr_total, rate);
strncpy(tp->display, strbuf.buf, sizeof(tp->display));
strbuf_release(&strbuf);
}
progress_update = 1;
sprintf(bufp, ", %s.\n", msg);
display(progress, progress->last_value, bufp);
if (buf != bufp)
free(bufp);
}
clear_progress_signal();
free(progress->throughput);
free(progress);
}
void stop_progress_msg(struct progress **p_progress, const char *msg)
{
struct progress *progress = *p_progress;
if (!progress)
return;
*p_progress = NULL;
if (progress->last_value != -1) {
/* Force the last update */
char *buf;
struct throughput *tp = progress->throughput;
if (tp) {
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;
buf = xstrfmt(", %s.\n", msg);
display(progress, progress->last_value, buf);
free(buf);
}
void display_throughput(struct progress *progress, off_t total)
{
struct throughput *tp;
uint64_t now_ns;
unsigned int misecs, count, rate;
if (!progress)
return;
tp = progress->throughput;
now_ns = getnanotime();
if (!tp) {
progress->throughput = tp = calloc(1, sizeof(*tp));
if (tp) {
tp->prev_total = tp->curr_total = total;
tp->prev_ns = now_ns;
strbuf_init(&tp->display, 0);
}
return;
}
tp->curr_total = total;
/* only update throughput every 0.5 s */
if (now_ns - tp->prev_ns <= 500000000)
return;
/*
* We have x = bytes and y = nanosecs. We want z = KiB/s:
*
* z = (x / 1024) / (y / 1000000000)
* z = x / y * 1000000000 / 1024
* z = x / (y * 1024 / 1000000000)
* z = x / y'
*
* To simplify things we'll keep track of misecs, or 1024th of a sec
* obtained with:
*
* y' = y * 1024 / 1000000000
* y' = y * (2^10 / 2^42) * (2^42 / 1000000000)
* y' = y / 2^32 * 4398
* y' = (y * 4398) >> 32
*/
misecs = ((now_ns - tp->prev_ns) * 4398) >> 32;
count = total - tp->prev_total;
tp->prev_total = total;
tp->prev_ns = now_ns;
tp->avg_bytes += count;
tp->avg_misecs += misecs;
rate = tp->avg_bytes / tp->avg_misecs;
tp->avg_bytes -= tp->last_bytes[tp->idx];
tp->avg_misecs -= tp->last_misecs[tp->idx];
tp->last_bytes[tp->idx] = count;
tp->last_misecs[tp->idx] = misecs;
tp->idx = (tp->idx + 1) % TP_IDX_MAX;
throughput_string(&tp->display, total, rate);
if (progress->last_value != -1 && progress_update)
display(progress, progress->last_value, NULL);
}
void display_throughput(struct progress *progress, off_t total)
{
struct throughput *tp;
struct timeval tv;
unsigned int misecs;
if (!progress)
return;
tp = progress->throughput;
gettimeofday(&tv, NULL);
if (!tp) {
progress->throughput = tp = calloc(1, sizeof(*tp));
if (tp) {
tp->prev_total = tp->curr_total = total;
tp->prev_tv = tv;
}
return;
}
tp->curr_total = total;
/*
* We have x = bytes and y = microsecs. We want z = KiB/s:
*
* z = (x / 1024) / (y / 1000000)
* z = x / y * 1000000 / 1024
* z = x / (y * 1024 / 1000000)
* z = x / y'
*
* To simplify things we'll keep track of misecs, or 1024th of a sec
* obtained with:
*
* y' = y * 1024 / 1000000
* y' = y / (1000000 / 1024)
* y' = y / 977
*/
misecs = (tv.tv_sec - tp->prev_tv.tv_sec) * 1024;
misecs += (int)(tv.tv_usec - tp->prev_tv.tv_usec) / 977;
if (misecs > 512) {
struct strbuf buf = STRBUF_INIT;
unsigned int count, rate;
count = total - tp->prev_total;
tp->prev_total = total;
tp->prev_tv = tv;
tp->avg_bytes += count;
tp->avg_misecs += misecs;
rate = tp->avg_bytes / tp->avg_misecs;
tp->avg_bytes -= tp->last_bytes[tp->idx];
tp->avg_misecs -= tp->last_misecs[tp->idx];
tp->last_bytes[tp->idx] = count;
tp->last_misecs[tp->idx] = misecs;
tp->idx = (tp->idx + 1) % TP_IDX_MAX;
throughput_string(&buf, total, rate);
strncpy(tp->display, buf.buf, sizeof(tp->display));
strbuf_release(&buf);
if (progress->last_value != -1 && progress_update)
display(progress, progress->last_value, NULL);
}
}
