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// SPDX-License-Identifier: GPL-3.0-or-later
#include "daemon/common.h"
static void checks_main_cleanup(void *ptr) {
struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
info("cleaning up...");
static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
}
void *checks_main(void *ptr) {
netdata_thread_cleanup_push(checks_main_cleanup, ptr);
usec_t usec = 0, susec = localhost->rrd_update_every * USEC_PER_SEC, loop_usec = 0, total_susec = 0;
struct timeval now, last, loop;
RRDSET *check1, *check2, *check3, *apps_cpu = NULL;
check1 = rrdset_create_localhost(
"netdata"
, "check1"
, NULL
, "netdata"
, NULL
, "Caller gives microseconds"
, "a million !"
, "checks.plugin"
, ""
, NETDATA_CHART_PRIO_CHECKS
, localhost->rrd_update_every
, RRDSET_TYPE_LINE
);
rrddim_add(check1, "absolute", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(check1, "incremental", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
check2 = rrdset_create_localhost(
"netdata"
, "check2"
, NULL
, "netdata"
, NULL
, "Netdata calcs microseconds"
, "a million !"
, "checks.plugin"
, ""
, NETDATA_CHART_PRIO_CHECKS
, localhost->rrd_update_every
, RRDSET_TYPE_LINE
);
rrddim_add(check2, "absolute", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(check2, "incremental", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
check3 = rrdset_create_localhost(
"netdata"
, "checkdt"
, NULL
, "netdata"
, NULL
, "Clock difference"
, "microseconds diff"
, "checks.plugin"
, ""
, NETDATA_CHART_PRIO_CHECKS
, localhost->rrd_update_every
, RRDSET_TYPE_LINE
);
rrddim_add(check3, "caller", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(check3, "netdata", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
rrddim_add(check3, "apps.plugin", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
now_realtime_timeval(&last);
while(!netdata_exit) {
usleep(susec);
// find the time to sleep in order to wait exactly update_every seconds
now_realtime_timeval(&now);
loop_usec = dt_usec(&now, &last);
usec = loop_usec - susec;
debug(D_PROCNETDEV_LOOP, "CHECK: last loop took %llu usec (worked for %llu, slept for %llu).", loop_usec, usec, susec);
if(usec < (localhost->rrd_update_every * USEC_PER_SEC / 2ULL)) susec = (localhost->rrd_update_every * USEC_PER_SEC) - usec;
else susec = localhost->rrd_update_every * USEC_PER_SEC / 2ULL;
// --------------------------------------------------------------------
// Calculate loop time
last.tv_sec = now.tv_sec;
last.tv_usec = now.tv_usec;
total_susec += loop_usec;
// --------------------------------------------------------------------
// check chart 1
if(check1->counter_done) rrdset_next_usec(check1, loop_usec);
rrddim_set(check1, "absolute", 1000000);
rrddim_set(check1, "incremental", total_susec);
rrdset_done(check1);
// --------------------------------------------------------------------
// check chart 2
if(check2->counter_done) rrdset_next(check2);
rrddim_set(check2, "absolute", 1000000);
rrddim_set(check2, "incremental", total_susec);
rrdset_done(check2);
// --------------------------------------------------------------------
// check chart 3
if(!apps_cpu) apps_cpu = rrdset_find_localhost("apps.cpu");
if(check3->counter_done) rrdset_next_usec(check3, loop_usec);
now_realtime_timeval(&loop);
rrddim_set(check3, "caller", (long long) dt_usec(&loop, &check1->last_collected_time));
rrddim_set(check3, "netdata", (long long) dt_usec(&loop, &check2->last_collected_time));
if(apps_cpu) rrddim_set(check3, "apps.plugin", (long long) dt_usec(&loop, &apps_cpu->last_collected_time));
rrdset_done(check3);
}
netdata_thread_cleanup_pop(1);
return NULL;
}
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