1 files changed, 97 insertions, 0 deletions
diff --git a/src/plugin_checks.c b/src/plugin_checks.c
new file mode 100755
index 000000000..379fb9a84
--- /dev/null
+++ b/src/plugin_checks.c
@@ -0,0 +1,97 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <pthread.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <strings.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "appconfig.h"
+#include "log.h"
+#include "rrd.h"
+#include "plugin_checks.h"
+
+void *checks_main(void *ptr)
+{
+	if(ptr) { ; }
+
+	info("CHECKS thread created with task id %d", gettid());
+
+	if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
+		error("Cannot set pthread cancel type to DEFERRED.");
+
+	if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
+		error("Cannot set pthread cancel state to ENABLE.");
+
+	unsigned long long usec = 0, susec = rrd_update_every * 1000000ULL, loop_usec = 0, total_susec = 0;
+	struct timeval now, last, loop;
+
+	RRDSET *check1, *check2, *check3, *apps_cpu = NULL;
+
+	check1 = rrdset_create("netdata", "check1", NULL, "netdata", NULL, "Caller gives microseconds", "a million !", 99999, rrd_update_every, RRDSET_TYPE_LINE);
+	rrddim_add(check1, "absolute", NULL, -1, 1, RRDDIM_ABSOLUTE);
+	rrddim_add(check1, "incremental", NULL, 1, 1, RRDDIM_INCREMENTAL);
+
+	check2 = rrdset_create("netdata", "check2", NULL, "netdata", NULL, "Netdata calcs microseconds", "a million !", 99999, rrd_update_every, RRDSET_TYPE_LINE);
+	rrddim_add(check2, "absolute", NULL, -1, 1, RRDDIM_ABSOLUTE);
+	rrddim_add(check2, "incremental", NULL, 1, 1, RRDDIM_INCREMENTAL);
+
+	check3 = rrdset_create("netdata", "checkdt", NULL, "netdata", NULL, "Clock difference", "microseconds diff", 99999, rrd_update_every, RRDSET_TYPE_LINE);
+	rrddim_add(check3, "caller", NULL, 1, 1, RRDDIM_ABSOLUTE);
+	rrddim_add(check3, "netdata", NULL, 1, 1, RRDDIM_ABSOLUTE);
+	rrddim_add(check3, "apps.plugin", NULL, 1, 1, RRDDIM_ABSOLUTE);
+
+	gettimeofday(&last, NULL);
+	while(1) {
+		usleep(susec);
+
+		// find the time to sleep in order to wait exactly update_every seconds
+		gettimeofday(&now, NULL);
+		loop_usec = usecdiff(&now, &last);
+		usec = loop_usec - susec;
+		debug(D_PROCNETDEV_LOOP, "CHECK: last loop took %llu usec (worked for %llu, sleeped for %llu).", loop_usec, usec, susec);
+
+		if(usec < (rrd_update_every * 1000000ULL / 2ULL)) susec = (rrd_update_every * 1000000ULL) - usec;
+		else susec = rrd_update_every * 1000000ULL / 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("apps.cpu");
+		if(check3->counter_done) rrdset_next_usec(check3, loop_usec);
+		gettimeofday(&loop, NULL);
+		rrddim_set(check3, "caller", (long long)usecdiff(&loop, &check1->last_collected_time));
+		rrddim_set(check3, "netdata", (long long)usecdiff(&loop, &check2->last_collected_time));
+		if(apps_cpu) rrddim_set(check3, "apps.plugin", (long long)usecdiff(&loop, &apps_cpu->last_collected_time));
+		rrdset_done(check3);
+	}
+
+	pthread_exit(NULL);
+	return NULL;
+}
+