archy-slstatus/components/uptime.c

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/* See LICENSE file for copyright and license details. */
#include <stdint.h>
#include <stdio.h>
#include <time.h>
#include "../util.h"
#if defined(CLOCK_BOOTTIME)
#define UPTIME_FLAG CLOCK_BOOTTIME
#elif defined(CLOCK_UPTIME)
#define UPTIME_FLAG CLOCK_UPTIME
#else
#define UPTIME_FLAG CLOCK_MONOTONIC
#endif
const char *
uptime(void)
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{
char warn_buf[256];
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uintmax_t h, m;
struct timespec uptime;
if (clock_gettime(UPTIME_FLAG, &uptime) < 0) {
snprintf(warn_buf, 256, "clock_gettime %d", UPTIME_FLAG);
warn(warn_buf);
return NULL;
}
h = uptime.tv_sec / 3600;
m = uptime.tv_sec % 3600 / 60;
return bprintf("%juh %jum", h, m);
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}