/**
* This function contains the main check machinery for monit. The
* validate function check services in the service list to see if
* they will pass all defined tests.
*/
void validate() {
Service_T s;
sigset_t ns, os;
if(! update_loadavg())
log("Update of loadavg has failed!\n");
if(Run.doprocess)
initprocesstree();
for(s= servicelist; s; s= s->next) {
if(s->visited)
continue;
LOCK(s->mutex)
set_signal_block(&ns, &os);
if(s->do_monitor && !check_skip(s) && !check_timeout(s))
s->check(s);
unset_signal_block(&os);
END_LOCK;
}
if(Run.doprocess)
delprocesstree();
reset_depend();
}
void gc() {
destroy_hosts_allow();
gc_protocols();
if(Run.doprocess) {
delprocesstree(&oldptree, oldptreesize);
delprocesstree(&ptree, ptreesize);
}
if(servicelist)
_gc_service_list(&servicelist);
if(servicegrouplist)
_gc_servicegroup(&servicegrouplist);
if(Run.credentials)
_gcath(&Run.credentials);
if(Run.maillist)
gc_mail_list(&Run.maillist);
if(Run.mailservers)
_gc_mail_server(&Run.mailservers);
if(Run.mmonits)
_gc_mmonit(&Run.mmonits);
if(Run.eventlist)
gc_event(&Run.eventlist);
FREE(Run.eventlist_dir);
FREE(Run.mygroup);
FREE(Run.localhostname);
FREE(Run.httpsslpem);
FREE(Run.httpsslclientpem);
FREE(Run.bind_addr);
FREE(Run.MailFormat.from);
FREE(Run.MailFormat.subject);
FREE(Run.MailFormat.message);
FREE(Run.mail_hostname);
}
/**
* Initialize the process tree
* @return treesize >= 0 if succeeded otherwise < 0
*/
int initprocesstree(ProcessTree_T **pt_r, int *size_r, ProcessTree_T **oldpt_r, int *oldsize_r) {
int i;
int oldentry;
ProcessTree_T *pt;
ProcessTree_T *oldpt;
int root = -1;
if (*pt_r != NULL) {
if (oldpt_r && *oldpt_r != NULL)
delprocesstree(oldpt_r, oldsize_r);
*oldpt_r = *pt_r;
*oldsize_r = *size_r;
}
if ((*size_r = initprocesstree_sysdep(pt_r)) <= 0) {
DEBUG("system statistic error -- cannot initialize the process tree => process resource monitoring disabled\n");
Run.doprocess = FALSE;
return -1;
} else if (Run.doprocess == FALSE) {
DEBUG("system statistic -- initialization of the process tree succeeded => process resource monitoring enabled\n");
Run.doprocess = TRUE;
}
pt = *pt_r;
oldpt = *oldpt_r;
if (pt == NULL)
return 0;
for (i = 0; i < (volatile int)*size_r; i ++) {
if (oldpt && ((oldentry = findprocess(pt[i].pid, oldpt, *oldsize_r)) != -1)) {
pt[i].cputime_prev = oldpt[oldentry].cputime;
pt[i].time_prev = oldpt[oldentry].time;
/* The cpu_percent may be set already (for example by HPUX module) */
if (pt[i].cpu_percent == 0 && pt[i].cputime_prev != 0 && pt[i].cputime != 0 && pt[i].cputime > pt[i].cputime_prev) {
pt[i].cpu_percent = (int)((1000 * (double)(pt[i].cputime - pt[i].cputime_prev) / (pt[i].time - pt[i].time_prev)) / systeminfo.cpus);
if (pt[i].cpu_percent > 1000 / systeminfo.cpus)
pt[i].cpu_percent = 1000 / systeminfo.cpus;
}
} else {
pt[i].cputime_prev = 0;
pt[i].time_prev = 0.0;
pt[i].cpu_percent = 0;
}
if (pt[i].pid == pt[i].ppid) {
pt[i].parent = i;
continue;
}
if ((pt[i].parent = findprocess(pt[i].ppid, pt, *size_r)) == -1) {
/* Parent process wasn't found - on Linux this is normal: main process with PID 0 is not listed, similarly in FreeBSD jail.
* We create virtual process entry for missing parent so we can have full tree-like structure with root. */
int j = (*size_r)++;
pt = *pt_r = xresize(*pt_r, *size_r * sizeof(ProcessTree_T));
memset(&pt[j], 0, sizeof(ProcessTree_T));
pt[j].ppid = pt[j].pid = pt[i].ppid;
pt[i].parent = j;
}
if (! connectchild(pt, pt[i].parent, i)) {
/* connection to parent process has failed, this is usually caused in the part above */
DEBUG("system statistic error -- cannot connect process id %d to its parent %d\n", pt[i].pid, pt[i].ppid);
pt[i].pid = 0;
continue;
}
}
/* The main process in Solaris zones and FreeBSD host doesn't have pid 1, so try to find process which is parent of itself */
for (i = 0; i < *size_r; i++) {
if (pt[i].pid == pt[i].ppid) {
root = i;
break;
}
}
if (root == -1) {
DEBUG("system statistic error -- cannot find root process id\n");
return -1;
}
fillprocesstree(pt, root);
update_system_load(*pt_r, *size_r);
return *size_r;
}