Subversion Repositories planix.SVN

/*
 * high-watermark measurements
 */
#include        "u.h"
#include        "../port/lib.h"
#include        "mem.h"
#include        "dat.h"
#include        "fns.h"

void
initmark(Watermark *wp, int max, char *name)
{
        memset(wp, 0, sizeof *wp);
        wp->max = max;
        wp->name = name;
}

void
notemark(Watermark *wp, int val)
{
        /* enforce obvious limits */
        if (val < 0)
                val = 0;
        else if (val > wp->max)
                val = wp->max;

        if (val > wp->highwater) {
                wp->highwater = val;
                if (val == wp->max && wp->curr < val)
                        wp->hitmax++;
        }
        wp->curr = val;
}

char *
seprintmark(char *buf, char *ebuf, Watermark *wp)
{
        return seprint(buf, ebuf, "%s:\thighwater %d/%d curr %d hitmax %d\n",
                wp->name, wp->highwater, wp->max, wp->curr, wp->hitmax);
}