-/*
- * This file contains miscellaneous housekeeping tasks.
- *
- * Copyright (c) 1987-2011 by the citadel.org team
- *
- * This program is open source software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
-#include <ctype.h>
-#include <string.h>
-#include <errno.h>
-#include <limits.h>
-#include <sys/types.h>
-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif
-#include <syslog.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "serv_extensions.h"
-#include "citserver.h"
-#include "config.h"
-#include "housekeeping.h"
-#include "sysdep_decls.h"
-#include "room_ops.h"
-#include "database.h"
-#include "msgbase.h"
-#include "journaling.h"
-
-#include "ctdl_module.h"
-#include "threads.h"
-
-void check_sched_shutdown(void) {
- if ((ScheduledShutdown == 1) && (ContextList == NULL)) {
- syslog(LOG_NOTICE, "Scheduled shutdown initiating.\n");
- server_shutting_down = 1;
- }
-}
-
-
-
-/*
- * Check (and fix) floor reference counts. This doesn't need to be done
- * very often, since the counts should remain correct during normal operation.
- */
-void check_ref_counts_backend(struct ctdlroom *qrbuf, void *data) {
-
- int *new_refcounts;
-
- new_refcounts = (int *) data;
-
- ++new_refcounts[(int)qrbuf->QRfloor];
-}
-
-void check_ref_counts(void) {
- struct floor flbuf;
- int a;
-
- int new_refcounts[MAXFLOORS];
-
- syslog(LOG_DEBUG, "Checking floor reference counts\n");
- for (a=0; a<MAXFLOORS; ++a) {
- new_refcounts[a] = 0;
- }
-
- cdb_begin_transaction();
- CtdlForEachRoom(check_ref_counts_backend, (void *)new_refcounts );
- cdb_end_transaction();
-
- for (a=0; a<MAXFLOORS; ++a) {
- lgetfloor(&flbuf, a);
- flbuf.f_ref_count = new_refcounts[a];
- if (new_refcounts[a] > 0) {
- flbuf.f_flags = flbuf.f_flags | QR_INUSE;
- }
- else {
- flbuf.f_flags = flbuf.f_flags & ~QR_INUSE;
- }
- lputfloor(&flbuf, a);
- syslog(LOG_DEBUG, "Floor %d: %d rooms\n", a, new_refcounts[a]);
- }
-}
-
-/*
- * This is the housekeeping loop. Worker threads come through here after
- * processing client requests but before jumping back into the pool. We
- * only allow housekeeping to execute once per minute, and we only allow one
- * instance to run at a time.
- */
-static int housekeeping_in_progress = 0;
-static time_t last_timer = 0L;
-void do_housekeeping(void) {
- int do_housekeeping_now = 0;
- int do_perminute_housekeeping_now = 0;
- time_t now;
-
- /*
- * We do it this way instead of wrapping the whole loop in an
- * S_HOUSEKEEPING critical section because it eliminates the need to
- * potentially have multiple concurrent mutexes in progress.
- */
- begin_critical_section(S_HOUSEKEEPING);
- if (housekeeping_in_progress == 0) {
- do_housekeeping_now = 1;
- housekeeping_in_progress = 1;
- }
- end_critical_section(S_HOUSEKEEPING);
-
- if (do_housekeeping_now == 0) {
- return;
- }
-
- /*
- * Ok, at this point we've made the decision to run the housekeeping
- * loop. Everything below this point is real work.
- */
-
- now = time(NULL);
- if ( (now - last_timer) > (time_t)60 ) {
- do_perminute_housekeeping_now = 1;
- last_timer = time(NULL);
- }
-
- /* First, do the "as often as needed" stuff... */
- JournalRunQueue();
- PerformSessionHooks(EVT_HOUSE);
-
- /* Then, do the "once per minute" stuff... */
- if (do_perminute_housekeeping_now) {
- cdb_check_handles(); /* suggested by Justin Case */
- PerformSessionHooks(EVT_TIMER); /* Run any timer hooks */
- }
-
- /*
- * All done.
- */
- begin_critical_section(S_HOUSEKEEPING);
- housekeeping_in_progress = 0;
- end_critical_section(S_HOUSEKEEPING);
-}