2 * This file contains miscellaneous housekeeping tasks.
4 * Copyright (c) 1987-2011 by the citadel.org team
6 * This program is open source software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 3.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 #include <libcitadel.h>
18 #include "ctdl_module.h"
19 #include "serv_extensions.h"
21 #include "internet_addressing.h"
22 #include "journaling.h"
24 void check_sched_shutdown(void) {
25 if ((ScheduledShutdown == 1) && (ContextList == NULL)) {
26 syslog(LOG_NOTICE, "Scheduled shutdown initiating.\n");
27 server_shutting_down = 1;
34 * Check (and fix) floor reference counts. This doesn't need to be done
35 * very often, since the counts should remain correct during normal operation.
37 void check_ref_counts_backend(struct ctdlroom *qrbuf, void *data) {
41 new_refcounts = (int *) data;
43 ++new_refcounts[(int)qrbuf->QRfloor];
46 void check_ref_counts(void) {
50 int new_refcounts[MAXFLOORS];
52 syslog(LOG_DEBUG, "Checking floor reference counts\n");
53 for (a=0; a<MAXFLOORS; ++a) {
57 cdb_begin_transaction();
58 CtdlForEachRoom(check_ref_counts_backend, (void *)new_refcounts );
59 cdb_end_transaction();
61 for (a=0; a<MAXFLOORS; ++a) {
63 flbuf.f_ref_count = new_refcounts[a];
64 if (new_refcounts[a] > 0) {
65 flbuf.f_flags = flbuf.f_flags | QR_INUSE;
68 flbuf.f_flags = flbuf.f_flags & ~QR_INUSE;
71 syslog(LOG_DEBUG, "Floor %d: %d rooms\n", a, new_refcounts[a]);
76 * This is the housekeeping loop. Worker threads come through here after
77 * processing client requests but before jumping back into the pool. We
78 * only allow housekeeping to execute once per minute, and we only allow one
79 * instance to run at a time.
81 static int housekeeping_in_progress = 0;
82 static time_t last_timer = 0L;
83 void do_housekeeping(void) {
84 int do_housekeeping_now = 0;
85 int do_perminute_housekeeping_now = 0;
89 * We do it this way instead of wrapping the whole loop in an
90 * S_HOUSEKEEPING critical section because it eliminates the need to
91 * potentially have multiple concurrent mutexes in progress.
93 begin_critical_section(S_HOUSEKEEPING);
94 if (housekeeping_in_progress == 0) {
95 do_housekeeping_now = 1;
96 housekeeping_in_progress = 1;
98 end_critical_section(S_HOUSEKEEPING);
100 if (do_housekeeping_now == 0) {
105 * Ok, at this point we've made the decision to run the housekeeping
106 * loop. Everything below this point is real work.
110 if ( (now - last_timer) > (time_t)60 ) {
111 do_perminute_housekeeping_now = 1;
112 last_timer = time(NULL);
115 /* First, do the "as often as needed" stuff... */
117 PerformSessionHooks(EVT_HOUSE);
119 /* Then, do the "once per minute" stuff... */
120 if (do_perminute_housekeeping_now) {
121 cdb_check_handles(); /* suggested by Justin Case */
122 PerformSessionHooks(EVT_TIMER); /* Run any timer hooks */
128 begin_critical_section(S_HOUSEKEEPING);
129 housekeeping_in_progress = 0;
130 end_critical_section(S_HOUSEKEEPING);
133 void CtdlDisableHouseKeeping(void)
135 int ActiveBackgroundJobs;
136 int do_housekeeping_now = 0;
137 struct CitContext *nptr;
140 retry_block_housekeeping:
141 syslog(LOG_INFO, "trying to disable housekeeping services");
142 begin_critical_section(S_HOUSEKEEPING);
143 if (housekeeping_in_progress == 0) {
144 do_housekeeping_now = 1;
145 housekeeping_in_progress = 1;
147 end_critical_section(S_HOUSEKEEPING);
148 if (do_housekeeping_now == 0) {
150 goto retry_block_housekeeping;
153 syslog(LOG_INFO, "checking for running server Jobs");
155 retry_wait_for_contexts:
156 /* So that we don't keep the context list locked for a long time
157 * we create a copy of it first
159 ActiveBackgroundJobs = 0;
160 nptr = CtdlGetContextArray(&nContexts) ;
163 for (i=0; i<nContexts; i++)
165 if ((nptr[i].state != CON_SYS) || (nptr[i].IO == NULL) || (nptr[i].lastcmd == 0))
167 ActiveBackgroundJobs ++;
168 syslog(LOG_INFO, "Job CC[%d] active; use TERM if you don't want to wait for it",nptr[i].cs_pid);
175 if (ActiveBackgroundJobs != 0) {
176 syslog(LOG_INFO, "found %d running jobs, need to wait", ActiveBackgroundJobs);
178 goto retry_wait_for_contexts;
180 syslog(LOG_INFO, "Housekeeping disabled now.");
183 void CtdlEnableHouseKeeping(void)
185 begin_critical_section(S_HOUSEKEEPING);
186 housekeeping_in_progress = 0;
187 end_critical_section(S_HOUSEKEEPING);