-/*
- * $Id$
- *
- * This file contains miscellaneous housekeeping tasks.
- *
- */
-
-#ifdef DLL_EXPORT
-#define IN_LIBCIT
-#endif
-
-#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 "tools.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"
-
-
-
-
-/*
- * Terminate idle sessions. This function pounds through the session table
- * comparing the current time to each session's time-of-last-command. If an
- * idle session is found it is terminated, then the search restarts at the
- * beginning because the pointer to our place in the list becomes invalid.
- */
-void terminate_idle_sessions(void) {
- struct CitContext *ccptr;
- time_t now;
- int session_to_kill;
- int killed = 0;
-
- now = time(NULL);
- session_to_kill = 0;
- begin_critical_section(S_SESSION_TABLE);
- for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
- if ( (ccptr!=CC)
- && (config.c_sleeping > 0)
- && (now - (ccptr->lastcmd) > config.c_sleeping) ) {
- ccptr->kill_me = 1;
- ++killed;
- }
- }
- end_critical_section(S_SESSION_TABLE);
- lprintf(9, "Terminated %d idle sessions\n", killed);
-}
-
-
-
-void check_sched_shutdown(void) {
- if ((ScheduledShutdown == 1) && (ContextList == NULL)) {
- lprintf(3, "Scheduled shutdown initiating.\n");
- time_to_die = 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.
- * NOTE: this function pair should ONLY be called during startup. It is NOT
- * thread safe.
- */
-void check_ref_counts_backend(struct quickroom *qrbuf, void *data) {
- struct floor flbuf;
-
- getfloor(&flbuf, qrbuf->QRfloor);
- ++flbuf.f_ref_count;
- flbuf.f_flags = flbuf.f_flags | QR_INUSE;
- putfloor(&flbuf, qrbuf->QRfloor);
-}
-
-void check_ref_counts(void) {
- struct floor flbuf;
- int a;
-
- lprintf(7, "Checking floor reference counts\n");
- for (a=0; a<MAXFLOORS; ++a) {
- getfloor(&flbuf, a);
- flbuf.f_ref_count = 0;
- flbuf.f_flags = flbuf.f_flags & ~QR_INUSE;
- putfloor(&flbuf, a);
- }
-
- cdb_begin_transaction();
- ForEachRoom(check_ref_counts_backend, NULL);
- cdb_end_transaction();
-}
-
-/*
- * 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.
- */
-void do_housekeeping(void) {
- static int housekeeping_in_progress = 0;
- static time_t last_timer = 0L;
- int do_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);
- now = time(NULL);
- if ( (now - last_timer) > (time_t)60 ) {
- if (housekeeping_in_progress == 0) {
- do_housekeeping_now = 1;
- housekeeping_in_progress = 1;
- last_timer = time(NULL);
- }
- }
- 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.
- */
-
- cdb_check_handles(); /* suggested by Justin Case */
- PerformSessionHooks(EVT_TIMER); /* Run any timer hooks */
-
- /*
- * All done.
- */
- housekeeping_in_progress = 0;
-}