+ 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);