4 * This file contains miscellaneous housekeeping tasks.
14 #if TIME_WITH_SYS_TIME
15 # include <sys/time.h>
19 # include <sys/time.h>
29 #include <sys/types.h>
30 #ifdef HAVE_SYS_SELECT_H
31 #include <sys/select.h>
33 #include <libcitadel.h>
36 #include "serv_extensions.h"
37 #include "citserver.h"
39 #include "housekeeping.h"
40 #include "sysdep_decls.h"
44 #include "journaling.h"
46 #include "ctdl_module.h"
50 * Terminate idle sessions. This function pounds through the session table
51 * comparing the current time to each session's time-of-last-command. If an
52 * idle session is found it is terminated, then the search restarts at the
53 * beginning because the pointer to our place in the list becomes invalid.
55 void terminate_idle_sessions(void) {
56 struct CitContext *ccptr;
64 begin_critical_section(S_SESSION_TABLE);
65 for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
67 && (config.c_sleeping > 0)
68 && (now - (ccptr->lastcmd) > config.c_sleeping) ) {
69 if (!ccptr->dont_term) {
77 end_critical_section(S_SESSION_TABLE);
79 CtdlLogPrintf(CTDL_INFO, "Terminated %d idle sessions\n", killed);
81 CtdlLogPrintf(CTDL_INFO, "Didn't terminate %d protected idle sessions;\n", killed);
86 void check_sched_shutdown(void) {
87 if ((ScheduledShutdown == 1) && (ContextList == NULL)) {
88 CtdlLogPrintf(CTDL_NOTICE, "Scheduled shutdown initiating.\n");
96 * Check (and fix) floor reference counts. This doesn't need to be done
97 * very often, since the counts should remain correct during normal operation.
99 void check_ref_counts_backend(struct ctdlroom *qrbuf, void *data) {
103 new_refcounts = (int *) data;
105 ++new_refcounts[(int)qrbuf->QRfloor];
108 void check_ref_counts(void) {
112 int new_refcounts[MAXFLOORS];
114 CtdlLogPrintf(CTDL_DEBUG, "Checking floor reference counts\n");
115 for (a=0; a<MAXFLOORS; ++a) {
116 new_refcounts[a] = 0;
119 cdb_begin_transaction();
120 ForEachRoom(check_ref_counts_backend, (void *)new_refcounts );
121 cdb_end_transaction();
123 for (a=0; a<MAXFLOORS; ++a) {
124 lgetfloor(&flbuf, a);
125 flbuf.f_ref_count = new_refcounts[a];
126 if (new_refcounts[a] > 0) {
127 flbuf.f_flags = flbuf.f_flags | QR_INUSE;
130 flbuf.f_flags = flbuf.f_flags & ~QR_INUSE;
132 lputfloor(&flbuf, a);
133 CtdlLogPrintf(CTDL_DEBUG, "Floor %d: %d rooms\n", a, new_refcounts[a]);
138 * This is the housekeeping loop. Worker threads come through here after
139 * processing client requests but before jumping back into the pool. We
140 * only allow housekeeping to execute once per minute, and we only allow one
141 * instance to run at a time.
143 void do_housekeeping(void) {
144 static int housekeeping_in_progress = 0;
145 static time_t last_timer = 0L;
146 int do_housekeeping_now = 0;
147 int do_perminute_housekeeping_now = 0;
149 const char *old_name;
152 * We do it this way instead of wrapping the whole loop in an
153 * S_HOUSEKEEPING critical section because it eliminates the need to
154 * potentially have multiple concurrent mutexes in progress.
156 begin_critical_section(S_HOUSEKEEPING);
157 if (housekeeping_in_progress == 0) {
158 do_housekeeping_now = 1;
159 housekeeping_in_progress = 1;
161 if ( (now - last_timer) > (time_t)60 ) {
162 do_perminute_housekeeping_now = 1;
163 last_timer = time(NULL);
166 end_critical_section(S_HOUSEKEEPING);
168 if (do_housekeeping_now == 0) {
173 * Ok, at this point we've made the decision to run the housekeeping
174 * loop. Everything below this point is real work.
177 /* First, do the "as often as needed" stuff... */
178 old_name = CtdlThreadName("House Keeping - Journal");
181 CtdlThreadName("House Keeping - EVT_HOUSE");
182 PerformSessionHooks(EVT_HOUSE); /* perform as needed housekeeping */
184 /* Then, do the "once per minute" stuff... */
185 if (do_perminute_housekeeping_now) {
186 cdb_check_handles(); /* suggested by Justin Case */
187 CtdlThreadName("House Keeping - EVT_TIMER");
188 PerformSessionHooks(EVT_TIMER); /* Run any timer hooks */
194 housekeeping_in_progress = 0;
195 CtdlThreadName(old_name);