transmission/libtransmission/history.c

56 lines
1.1 KiB
C

/*
* This file Copyright (C) 2010-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#include <assert.h>
#include <string.h> /* memset () */
#include "transmission.h"
#include "history.h"
#include "utils.h"
void
tr_historyAdd (tr_recentHistory * h, time_t now, unsigned int n)
{
if (h->slices[h->newest].date == now)
{
h->slices[h->newest].n += n;
}
else
{
if (++h->newest == TR_RECENT_HISTORY_PERIOD_SEC)
h->newest = 0;
h->slices[h->newest].date = now;
h->slices[h->newest].n = n;
}
}
unsigned int
tr_historyGet (const tr_recentHistory * h, time_t now, unsigned int sec)
{
unsigned int n = 0;
const time_t cutoff = (now?now:tr_time ()) - sec;
int i = h->newest;
for (;;)
{
if (h->slices[i].date <= cutoff)
break;
n += h->slices[i].n;
if (--i == -1)
i = TR_RECENT_HISTORY_PERIOD_SEC - 1; /* circular history */
if (i == h->newest)
break; /* we've come all the way around */
}
return n;
}