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#include "common.h"
int do_proc_uptime(int update_every, usec_t dt) {
(void)dt;
collected_number uptime = 0;
#ifdef CLOCK_BOOTTIME_IS_AVAILABLE
uptime = now_boottime_usec() / 1000;
#else
static procfile *ff = NULL;
if(unlikely(!ff)) {
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/uptime");
ff = procfile_open(config_get("plugin:proc:/proc/uptime", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT);
if(unlikely(!ff))
return 1;
}
ff = procfile_readall(ff);
if(unlikely(!ff))
return 0; // we return 0, so that we will retry to open it next time
if(unlikely(procfile_lines(ff) < 1)) {
error("/proc/uptime has no lines.");
return 1;
}
if(unlikely(procfile_linewords(ff, 0) < 1)) {
error("/proc/uptime has less than 1 word in it.");
return 1;
}
uptime = (collected_number)(strtold(procfile_lineword(ff, 0, 0), NULL) * 1000.0);
#endif
// --------------------------------------------------------------------
static RRDSET *st = NULL;
static RRDDIM *rd = NULL;
if(unlikely(!st)) {
st = rrdset_create_localhost(
"system"
, "uptime"
, NULL
, "uptime"
, NULL
, "System Uptime"
, "seconds"
, 1000
, update_every
, RRDSET_TYPE_LINE
);
rd = rrddim_add(st, "uptime", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
}
else
rrdset_next(st);
rrddim_set_by_pointer(st, rd, uptime);
rrdset_done(st);
return 0;
}
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