slstatus

status monitor
git clone git://git.suckless.org/slstatus
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uptime.c (689B)


      1 /* See LICENSE file for copyright and license details. */
      2 #include <stdint.h>
      3 #include <stdio.h>
      4 #include <time.h>
      5 
      6 #include "../slstatus.h"
      7 #include "../util.h"
      8 
      9 #if defined(CLOCK_BOOTTIME)
     10 	#define UPTIME_FLAG CLOCK_BOOTTIME
     11 #elif defined(CLOCK_UPTIME)
     12 	#define UPTIME_FLAG CLOCK_UPTIME
     13 #else
     14 	#define UPTIME_FLAG CLOCK_MONOTONIC
     15 #endif
     16 
     17 const char *
     18 uptime(const char *unused)
     19 {
     20 	char warn_buf[256];
     21 	uintmax_t h, m;
     22 	struct timespec uptime;
     23 
     24 	if (clock_gettime(UPTIME_FLAG, &uptime) < 0) {
     25 		snprintf(warn_buf, 256, "clock_gettime %d", UPTIME_FLAG);
     26 		warn(warn_buf);
     27 		return NULL;
     28 	}
     29 
     30 	h = uptime.tv_sec / 3600;
     31 	m = uptime.tv_sec % 3600 / 60;
     32 
     33 	return bprintf("%juh %jum", h, m);
     34 }